Abstract

The invention relates to a supply device for at least one hydraulic load, such as a working cylinder (10), comprising a fluid supply device (14), which is connected to a supply circuit (16) that has at least two fluid pumps (40, 41, 43), for the respective hydraulic load, a controller (32) which controls the supply of fluid to the respective hydraulic load in the inlet, and at least one regulating device (18). The invention is characterized in that the outlet sides (50, 51, 53) of each of the fluid pumps (40, 41, 43) are connected to the inlet of the fluid supply by means of the controller (32), thereby bypassing the regulating device (18), and each regulating device (18) releases a modifiable opening cross-section (70, 71, 73), which can be connected to each of the outlet sides (50, 51, 53) of the fluid pumps (40, 41, 43), in the return feed line from the respective load in order to form a low-pressure or return connection (68).

IPC Classes  ?

• F15B 11/042 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed by means in the feed line
• F15B 11/16 - Servomotor systems without provision for follow-up action with two or more servomotors
• F15B 11/17 - Servomotor systems without provision for follow-up action with two or more servomotors using two or more pumps

Abstract

An open center hydraulic system (100) includes a tank configured to hold hydraulic fluid, a pump configured to provide pressurized hydraulic fluid from the tank, and a shunt valve configured to adapt a first opening area between a first input port and a first output port of the shunt valve dependent on a first control signal. The first input port is coupled to the pump, and the first output port is coupled to the tank. A first actuator valve is coupled to the first input port and configured to adapt a second opening area of the first actuator valve dependent on a second control signal. A hydraulic valve control unit is configured to determine a first opening area value and a second opening area value based on user input data and a predetermined relation dependent on the user input data, sending the first control signal, indicative of the first opening area value and sending the second control signal indicative of the second opening area value.

IPC Classes  ?

• E02F 9/22 - Hydraulic or pneumatic drives
• F15B 1/02 - Installations or systems with accumulators
• F15B 11/042 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed by means in the feed line
• F15B 13/08 - Assemblies of units, each for the control of a single servomotor only
• F15B 15/20 - Other details
• F15B 19/00 - Testing fluid-pressure actuator systems or apparatus, so far as not provided for elsewhere
• F15B 21/08 - Servomotor systems incorporating electrically- operated control means
• F16K 11/00 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid

Abstract

A hydraulic valve control unit is for an open center hydraulic system including a pump, a shunt valve and one or more actuator valves coupled to the shunt valve. Each actuator valve controls a corresponding actuator's position. The hydraulic valve control unit has a processor and a memory, containing instructions executable by the processor, and is configured to obtain user input data indicative of a desired actuator's position, determining opening area values of the one or more actuator valves using a predetermined relation dependent on the user input data, determining an opening area value of the shunt valve using the predetermined relation dependent on the user input data, controlling the shunt valve based on the opening area value of the shunt valve, and controlling the one or more actuator valves based on the opening area values of the one or more actuator valves.

IPC Classes  ?

• F15B 13/08 - Assemblies of units, each for the control of a single servomotor only
• E02F 9/22 - Hydraulic or pneumatic drives
• F15B 1/02 - Installations or systems with accumulators
• F15B 11/042 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed by means in the feed line
• F15B 15/20 - Other details
• F15B 21/08 - Servomotor systems incorporating electrically- operated control means
• F16K 11/00 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid
• F15B 19/00 - Testing fluid-pressure actuator systems or apparatus, so far as not provided for elsewhere

Abstract

The present invention relates to An open center hydraulic system (100), the open center hydraulic system (100) comprising a tank configured to hold hydraulic fluid, a pump configured to provide pressurized hydraulic fluid from the tank, a shunt valve configured to adapt an first opening area between a first input port and a first output port of the shunt valve dependent on a first control signal, wherein the first input port is coupled to the pump and the first output port is coupled to the tank, a first actuator valve coupled to the first input port and configured to adapt a second opening area of the first actuator valve dependent on a second control signal, a hydraulic valve control unit configured to determine a first opening area value and a second opening area value based on user input data and a predetermined relation dependent on the user input data,sending the first control signal, indicative of the first opening area value and sending the second control signal indicative of the second opening area value.

IPC Classes  ?

• F15B 1/02 - Installations or systems with accumulators
• F15B 11/042 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed by means in the feed line
• F15B 13/08 - Assemblies of units, each for the control of a single servomotor only
• F15B 15/20 - Other details
• F15B 19/00 - Testing fluid-pressure actuator systems or apparatus, so far as not provided for elsewhere
• F15B 21/08 - Servomotor systems incorporating electrically- operated control means

Abstract

The present invention relates to a hydraulic valve control unit for an open center hydraulic system, the open center hydraulic system comprising a pump, a shunt valve and one or more actuator valves coupled to the shunt valve, wherein each actuator valve is controlling a corresponding actuator's position, the hydraulic valve control unit comprising a processor anda memory, said memory containing instructions executable by said processor, wherein said hydraulic valve control unit is configured to obtain user input data indicative of at least a desired actuator's position,determining opening area values of the one or more actuator valves using a predetermined rela- tion dependent on the user input data,determining an opening area value of the shunt valve using the predetermined relation dependent on the user input data, controlling the shunt valve based on the opening area value of the shunt valve, and controlling the one or more actuator valves based on the opening area values of the one or more actuator valves.The invention further relates to an open center hydraulic system.

IPC Classes  ?

• F15B 1/02 - Installations or systems with accumulators
• F15B 11/042 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed by means in the feed line
• F15B 13/08 - Assemblies of units, each for the control of a single servomotor only
• F15B 15/20 - Other details
• F15B 19/00 - Testing fluid-pressure actuator systems or apparatus, so far as not provided for elsewhere
• F15B 21/08 - Servomotor systems incorporating electrically- operated control means

Goods & Services

Ironmongery and small items of metal hardware, including screws; fittings of metal for fastening storage units, filters, valves and control blocks, and gas, liquid and electric conduits; fittings for gas and liquid apparatus and for gas or liquid conduits of metal; metal threaded fasteners; clips of metal; pipe couplings and joints of metal, flexible tubes of metal; pipe joint supports of metal, metal tubing couplings for joining pipes, sealing caps of metal; storage tanks of metal, including hydraulic tanks of metal; containers of metal, in particular in the form of storage housings, filter housings and valve blocks (not being parts of machines). Fluid technology, gas technology and lubricating technology installations and components of all kinds, included in this class, in particular for use in the automobile industry, including mobile hydraulics, the semiconductor industry, the food industry, aerospace, medicine, pharmacy, oil and gas transport technology, environmental engineering, laboratory and testing technology, household and sanitary systems, as well as in mining and in the field of steelworks, power plants, wind power installations, machine tools, transfer presses, plastic injection moulding machines; hydropneumatic storage units being machine parts; piston accumulators, bladder accumulators, diaphragm accumulators, bellows accumulators, spring accumulators, in each case being parts of machines and accumulator installations consisting of such accumulators, being parts of machines, including in the field of offshore and deep sea applications; hydraulic, hydropneumatic and reflective sound, vibration and pressure dampers, resonators, silencers, in each case being parts of machines; filtration devices and filters, being parts of machines, for filtration and separation technologies, usable for all technical, chemical, biological, and process engineering applications; replacement parts for all the aforesaid goods; coalescers, high-pressure, medium-pressure and low-pressure filters, liquid filters, line filters and process line filters, gas filters, including for seal gas systems, cyclone filters and other separating filters, filling filters and ventilation filters, full flow filters and bypass filters, multistage filters, return flow filters, including suction filters and return flow suction filters, tank-integrated filters, including ventilating and drying devices, drum filters and strip winding filters, perforated plate and screen filters, offline and inline filters, and spin-on filters, plastic melt filters, membrane filters, filter units together with draining apparatus, including being machine parts; filter elements, perforated plate and screen filter elements, gap-type tube filter elements, rheological filter elements, flow filter elements, filter candles, filter cartridges, filter housings, filter discs and disc filter elements, filter mats, filter pots, filter cloths, filter bags, filter belts, filter packs and depth filter elements, including woven materials for filters, including being machine parts; separators for hydraulic or pneumatic machines; cooling and heating devices, namely, heat exchangers (parts of machines) for stationary and mobile applications for exchanging heat between liquid and/or gaseous media; shut-off equipment, shut-off apparatus, stopcocks, switch-over devices and valves being parts of machines, in particular for hydraulic and pneumatic propellants and media; in particular inflow pressure and circulating pressure balances, flow control valves, priority valves, longitudinally linked valves, servo valves, shuttle valves, seat and slide valves, throttle valves, diaphragms, directional control valves, non-return valves, pressure, pressure control and pressure limiting valves, with and without indicators and monitoring equipment, venting valves; control apparatus being parts of machines, in particular for hydraulic and pneumatic installations, in particular flow-dividers and control blocks, including valve control blocks; hydraulic or pneumatic operating cylinders, being parts of machines; hydraulic and pneumatic motors and engines, gearboxes, clutches, pumps and compressors, in each case being parts of machines; hydraulic or pneumatic drive units for land, air and water vehicles and being parts of machines, in particular for process engineering, for general machine construction and for vehicles, in particular for construction machines, for machine tools, for machines for manufacturing plastics, for drives for tools, for presses, for transport installations, for shipping and aeronautics, for chemical and reactor technology, for mining and iron and steel works, and for rolling mills, in particular consisting of at least one hydraulic pump, at least one drive motor and at least one container of metal or plastic for liquids; hydraulic motors and engines; control apparatus, in particular electric, electro-mechanical and electro-hydraulic control apparatus (included in this class); lubricating apparatus and equipment, lubricating installations, supply apparatus, in particular distributors for stationary and mobile application; mechanically operated clamping apparatus, clamping machines and clamping tools; motor-driven hydraulic pressure and feed pumps, being parts of machines, adjustable and non-adjustable; hydraulic drive units for elevator controllers, transport controllers and lift controllers, in particular consisting of a hydraulic pump, a drive motor and a liquid container of metal or plastic; machines for industrial washing and cleaning; feeding, cutting, packaging and stranding equipment for wires, all being for hydraulic or pneumatic machines. Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (see provision), life saving and teaching apparatus and instruments; electric (including radio technical) apparatus and instruments; measuring, signalling, checking (supervision) and remote control apparatus; electric installations and components of all kinds, included in this class, in particular for use in the automobile industry, including mobile hydraulics, the semiconductor industry, the food industry, aeronautics, medicine, pharmacy, oil and gas transport technology, environmental engineering, laboratory and testing technology, household and sanitary systems, as well as in mining and in the field of steelworks, power plants, wind power installations, machine tools, transfer presses and plastic injection moulding machines; electric connections; covers and containers of plastic, and bushings for use as electric insulating connectors; control equipment and apparatus for elevator controllers; resonators; indicator, monitor and control apparatus for level, pressure, temperature and quantity for gaseous and liquid media, manometer monitoring switches; switching equipment, monitoring apparatus and diagnostic apparatus for technical applications; apparatus, instruments and components for conducting, switching, converting, storing, regulating or controlling electricity; transducers; electric actuators; sensors, including pressure sensors, flow sensors, temperature sensors, level sensors, sensors for detecting state variables of liquids and gases, fluid flow sensors, viscosity sensors, gas sensors, conductivity sensors, sensors for determining relative permittivity, moisture sensors, optical sensors, magnetic sensors, capacitive sensors, chemical sensors, thermoelectric sensors, distance sensors, incline sensor, particle counters, piezoelectric actuators, electrostatic actuators and magnetic actuators; active and passive electric and electronic components; active and passive electric and electronic components manufactured using thick-film and thin-film technology; microwave antennas; magnets, including in combination with valve switching components, except ignition magnets for motors and engines; optical equipment and apparatus, including cameras, microscopes, optical recording apparatus, in particular for analysis and metrology; optical particle counting apparatus; individual parts for electronic apparatus, in particular logical elements, electrotechnical and electronic component parts and units consisting thereof, in particular printed circuits, semiconductor component parts, integrated circuits, memory components, resistors, microprocessors; circuit boards with electrotechnical and electronic assemblies and component parts of computers and data processing installations, and electric and electronic installations for monitoring, testing and controlling industrial working processes and of apparatus and instruments in the mechanical engineering field, in particular semiconductor components; electronic, electrotechnical and mechanical apparatus, equipment and instruments, namely for computers and systems composed of the aforesaid goods, including peripheral apparatus connected thereto for recording, displaying; apparatus and instruments for output and transmission of data relating to manufacturing and process engineering; computers, in particular research, scientific and industrial computers, in particular for technical and scientific applications; data processing programs for these computers recorded on machine-readable data carriers, in particular magnetic disks and tapes and diskettes; computer software; electronic and electrotechnical instruments, devices and equipment parts in the field of manufacture and engineering; dosimeters; electrical and electronic control apparatus relating to vehicle stabilisation systems, including roll stabilisation devices; electronic memory devices for hydraulic and pneumatic machines.

Abstract

A hydraulic valve device includes a first and a second engine port to a double acting hydraulic motor, a pump, a hand valve which has two open positions, wherein in the first open position the pump is fluidly connected to the first engine port and the tank is fluidly connected to the second engine port; and wherein in the second open position the pump is fluidly connected to the second engine port and the tank is fluidly connected to the first engine port, with a first nonreturn valve, arranged between the pump and second engine port. A piston which by way of the load pressure in the first engine port via a line governs the first nonreturn valve, and a second nonreturn valve arranged, as long as the hand valve is in its first open position, to connect the first engine port to the second engine port.

IPC Classes  ?

• F15B 11/024 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
• E02F 9/22 - Hydraulic or pneumatic drives
• F15B 11/00 - Servomotor systems without provision for follow-up action
• F15B 21/14 - Energy-recuperation means

Goods & Services

[ Ironmongery and small items of metal hardware, namely, screws; fittings of metal for fastening storage units, filters, valves and control blocks, and gas, liquid and electric conduits; fittings of metal for gas and liquid apparatus and for gas or liquid conduits; mechanical fastening elements of metal; metal clips of all kinds for connecting hydraulic and pneumatic system parts; metal hose couplings and connections for use with industrial metal hoses; flexible tubes of metal; metal connector supports and metal screw couplings and metal adapters for use with pipes and hoses; metal sealing caps; storage tanks, namely, metal hydraulic tanks; and housings and parts therefor, in particular in the form of metal storage housings, metal filter housings and metal valve blocks ] [ Fluid technology, gas technology and lubricating technology installations and components, in each case being machines or parts of machines for use in the automobile industry, for mobile hydraulics, the semiconductor industry, the food industry, the aerospace industry, the medical industry, the pharmaceutical industry, the oil and gas transport technology industry, the environmental engineering industry, the laboratory and testing technology industry, the household and sanitary systems industry, as well as for use in the mining industry and in the field of steelworks, for power plants and wind power installations, for machine tools, for transfer presses and for plastic injection moulding machines; hydropneumatic storage units being machine parts; memories, namely, accumulators, for hydraulic and pneumatic machines; machine parts, namely, piston accumulators, bubble memory devices, diaphragm accumulators, bellows accumulators, spring accumulators, all of the aforesaid being parts of machines and accumulator installations consisting of such accumulators, which are also parts of machines; machine parts, namely, hydraulic, hydropneumatic and reflective sound, vibration and pressure dampers, resonators for machines, silencers for machines; machine parts, namely, filtration devices and filters for use in all technical, chemical, biological, and process engineering applications in the filtration and separation technologies industries; replacement parts for all the aforesaid goods; coalescers, namely, separating machines; air, oil and water filter apparatus and filters, being parts of hydraulic and pneumatic machines, for filtration and separation technologies, usable for all technical, chemical, biological, and process engineering applications, namely, high-pressure, medium-pressure and low-pressure filters, liquid filters, line filters and process line filters, gas filters, including for seal gas systems, cyclone filters and other separating filters, filling filters and ventilation filters, full flow filters and bypass filters, multistage filters, return flow filters, including suction filters and return flow suction filters, tank-integrated filters, including ventilating and drying devices, drum filters and strip winding filters, perforated plate and screen filters, offline and inline filters, and spin-on filters, plastic melt filters and membrane filters; filter aggregates including draining devices being parts of machines; filter elements for air, oil and gas; perforated plate and screen filter elements, gap-type tube filter elements, rheological filter elements, flow filter elements, filter candles, filter cartridges, filter housings, filter discs and disc filter elements, filter mats, filter pots, filter cloths, filter bags, filter belts, filter packs and depth filter elements, all being parts of machines; separators for hydraulic or pneumatic machines, namely, fluid separators; cooling and heating units for industrial purposes, including heat exchangers being parts of machines for stationary and mobile applications for exchanging heat between liquid and gaseous media; shut-off equipment, shut-off apparatus, stopcocks, switch-over devices and ] valves being parts of machines, in particular for hydraulic and pneumatic propellants and media, namely, valves for inflow pressure and circulating pressure balances; flow control valves, priority valves, longitudinally linked valves, servo valves, shuttle valves, seat and slide valves, throttle valves, [ diaphragms, ] directional control valves, non-return valves, pressure, pressure control and pressure limiting valves, with and without indicators and monitoring equipment, venting valves; [ control apparatus being parts of machines, in particular for hydraulic and pneumatic installations, in particular flow-dividers and control blocks; ] valve control blocks [ ; hydraulic and pneumatic operating cylinders, being parts of machines; hydraulic and pneumatic motors and engines, gearboxes other than for land vehicles, clutches, pumps and compressors, in each case being parts of machines; hydraulic and pneumatic drive units for land, air and water vehicles and being parts of machines, in particular for process engineering, for general machine construction and for vehicles, in particular for construction machines, for machine tools, for machines for manufacturing plastics, for drives for tools, for presses, for transport installations, for shipping and aeronautics, for chemical and reactor technology, for mining and iron and steel works, and for rolling mills, in particular consisting of at least one hydraulic pump, at least one drive motor and at least one container of metal or plastic for liquids; hydraulic motors and engines; control apparatus, in particular electric, electro-mechanical and electro-hydraulic control apparatus for machines, motors and engines; lubricating machines consisting of lubricating apparatus and equipment, lubricating installations and supply apparatus for stationary and mobile applications; mechanically operated clamping apparatus, clamping machines and clamping tools; motor-driven hydraulic pressure and feed pumps, being parts of machines, adjustable and non-adjustable; hydraulic drive units for elevator controllers, transport controllers and lift controllers, in particular consisting of a hydraulic pump, a drive motor and a liquid container of metal or plastic; machines for industrial washing and cleaning; feeding, cutting, packaging and stranding equipment for wires, all being for hydraulic or pneumatic machines and electric motors for elevator controls ] [ Scientific apparatus for determining the water content in oils; surveying instruments; cinematographic machines and apparatus, optical inspection apparatus for industrial use; apparatus and instruments for weighing; measuring apparatus and instruments for measuring temperature, pressure, quantity and concentration of fluids in hydraulic or pneumatic systems; checking apparatus and instruments for testing and checking the temperature, pressure, quantity and concentration of gas and liquids; electrical radio connectors; ] electric installations and electronic apparatus for the remote control of industrial operations; electric installations and components, namely, control valves for regulating the flow of gases and liquids, expansion valves for fluid control; electric installations and components, namely, control valves for regulating the flow of gases and liquids, expansion valves for fluid control for use in the automobile industry, including the mobile hydraulics industry, the semiconductor industry, the food industry, the aeronautics industry, the medical industry, the pharmaceutical industry, the oil and gas transport technology industry, the environmental engineering industry, the laboratory and testing technology industry, the household and sanitary systems industry, as well as in the mining industry and in the field of steelworks, power plants, wind power installations, machine tools, transfer presses and plastic injection moulding machines [ ; contact devices, namely, electric and magnetic contacts; covers and containers of plastic, and bushings for use as electric insulating connectors and not for non-electric cable or machinery or machine parts; electrical control equipment and apparatus for elevator controllers; resonators; electronic indicator, monitor and control apparatus for level, pressure, temperature and quantity for gaseous and liquid media, manometer monitoring switches; electronic switching equipment, monitoring apparatus and diagnostic apparatus for technical applications and not for medical use; apparatus, instruments and components for conducting, switching, converting, storing, regulating or controlling electricity, namely, accumulators and batteries; electrical transducers; electric actuators; sensors, namely, pressure sensors, flow sensors, temperature sensors, liquid level sensors, sensors for detecting state variables of liquids and gases, fluid flow sensors, viscosity sensors, gas sensors, conductivity sensors, sensors for determining relative permittivity, moisture sensors, optical sensors, magnetic sensors, capacitive sensors, chemical sensors, thermoelectric sensors, distance sensors, incline sensor, particle counters, piezoelectric actuators, electrostatic actuators and magnetic actuators; active and passive electric and electronic components, namely, capacitors, connectors, filters, oscillators, relays, switches, transformers, resistors, semiconductors, integrated circuits, rectifiers, transistors, thick-film materials, thin-film materials, solid-state memories; microwave antennae; magnets, including in combination with valve switching components, except ignition magnets for motors and engines and excluding magnets for medical purposes; optical equipment and apparatus, namely, cameras, microscopes, optical recording apparatus, in particular for analysis and metrology; optical particle counting apparatus; individual parts for electronic apparatus, in particular logical elements, electrotechnical and electronic component parts and units consisting thereof, in particular printed circuits, semiconductor component parts, integrated circuits, electronic memory components, electric resistors, microprocessors; circuit boards with electrotechnical and electronic assemblies and component parts of computers and data processing installations, and electric and electronic installations for monitoring, testing and controlling industrial working processes and of apparatus and instruments in the mechanical engineering field, in particular semiconductor components; electronic, electrotechnical and mechanical apparatus, equipment and instruments, namely, for computers and systems composed of the aforesaid goods, namely, peripheral apparatus connected thereto for recording, displaying, output and transmission of data and for manufacturing and process engineering; computers, in particular research, scientific and industrial computers, in particular for technical and scientific applications; data processing programs for these computers recorded on machine-readable data carriers, in particular magnetic disks and tapes and diskettes for the operation of hydraulic and pneumatic systems; computer software for the operation of hydraulic and pneumatic systems, simulation software n the field of fluid technology, gas technology and lubricating technology; dosimeters; control apparatus and vehicle stabilization systems, namely, electronic roll stabilization devices ]

Goods & Services

Ironmongery and small items of metal hardware, including screws; Fittings of metal for fastening storage units, filters, valves and control blocks, and gas, liquid and electric conduits; Fittings for gas and liquid apparatus and for gas or liquid conduits of metal; Fastening elements; Clips of all kinds; Hose couplings and connections, flexible tubes of metal; Connector supports and Screw couplings and adapters and Sealing caps; Storage tanks, including hydraulic tanks; Housings and parts therefor, in particular in the form of storage housings, filter housings and valve blocks. Fluid technology, gas technology and lubricating technology installations and components of all kinds, included in class 7, in particular for use in the automobile industry, including mobile hydraulics, the semiconductor industry, the food industry, aerospace, medicine, pharmacy, oil and gas transport technology, environmental engineering, laboratory and testing technology, household and sanitary systems, as well as in mining and in the field of steelworks, power plants, wind power installations, machine tools, transfer presses, plastic injection moulding machines; Hydropneumatic storage units being machine parts; Memories for hydraulic and pneumatic machines; Piston accumulators, bubble memory devices, diaphragm accumulators, bellows accumulators, spring accumulators, in each case being parts of machines and accumulator installations consisting of such accumulators, being parts of machines, including in the field of offshore and deep sea applications; Hydraulic, hydropneumatic and reflective sound, vibration and pressure dampers, resonators, silencers, in each case being parts of machines; Filtration devices and filters, being parts of machines, for filtration and separation technologies, usable for all technical, chemical, biological, and process engineering applications; Replacement parts for all the aforesaid goods; Coalescers, High-pressure, medium-pressure and low-pressure filters, Liquid filters, Line filters and process line filters, gas filters, including for seal gas systems, cyclone filters and other separating filters, filling filters and ventilation filters, full flow filters and bypass filters, multistage filters, return flow filters, including suction filters and return flow suction filters, tank-integrated filters, including ventilating and drying devices, Drum filters and Strip winding filters, perforated plate and screen filters, offline and inline filters, and spin-on filters, plastic melt filters, Membrane filters, Filter units together with draining apparatus, Including being machine parts; Filter elements, Perforated plate and screen filter elements, gap-type tube filter elements, rheological filter elements, flow filter elements, Filter candles, Filter cartridges, Filter housings, Filter discs and Disc filter elements, filter mats, filter pots, filter cloths, filter bags, filter belts, filter packs and depth filter elements, including woven materials for filters, Including being machine parts; Separators for hydraulic or pneumatic machines; Cooling and heating devices, including heat exchangers (parts of machines) for stationary and mobile applications for exchanging heat between liquid and/or gaseous media; Shut-off equipment, shut-off apparatus, stopcocks, Switch-over devices and Valves being parts of machines, In particular for hydraulic and pneumatic propellants and media; In particular inflow pressure and circulating pressure balances, flow control valves, priority valves, longitudinally linked valves, servo valves, shuttle valves, seat and slide valves, throttle valves, diaphragms, directional control valves, non-return valves, pressure, pressure control and pressure limiting valves, with and without indicators and monitoring equipment, venting valves; Control apparatus being parts of machines, in particular for hydraulic and pneumatic installations, in particular flow-dividers and control blocks, including valve control blocks; Hydraulic or pneumatic operating cylinders, being parts of machines; Hydraulic and pneumatic motors and engines, Gearboxes, Clutches, Pumps and compressors, in each case being parts of machines; Hydraulic or pneumatic drive units for land, air and water vehicles and being parts of machines, in particular for process engineering, for general machine construction and for vehicles, in particular for construction machines, for machine tools, for machines for manufacturing plastics, for drives for tools, for presses, for transport installations, for shipping and aeronautics, for chemical and reactor technology, for mining and iron and steel works, and for rolling mills, in particular consisting of at least one hydraulic pump, at least one drive motor and at least one container of metal or plastic for liquids; Hydraulic motors and engines; Control apparatus, in particular electric, electro-mechanical and electro-hydraulic control apparatus (included in class 7); Lubricating apparatus and equipment, lubricating installations, supply apparatus, in particular distributors for stationary and mobile application; Mechanically operated clamping apparatus, clamping machines and clamping tools; Motor-driven hydraulic pressure and feed pumps, being parts of machines, adjustable and non-adjustable; Hydraulic drive units for elevator controllers, transport controllers and lift controllers, in particular consisting of a hydraulic pump, a drive motor and a liquid container of metal or plastic; Machines for industrial washing and cleaning; Feeding, cutting, packaging and stranding equipment for wires, all being for hydraulic or pneumatic machines; Electric motors for wheelchair controls. Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (see provision), life saving and teaching apparatus and instruments; Electric (including radio technical) apparatus and instruments; Measuring, signalling, checking (supervision) and remote control apparatus; Electric installations and components of all kinds, included in class 9, in particular for use in the automobile industry, including mobile hydraulics, the semiconductor industry, the food industry, aeronautics, medicine, pharmacy, oil and gas transport technology, environmental engineering, laboratory and testing technology, household and sanitary systems, as well as in mining and in the field of steelworks, power plants, wind power installations, machine tools, transfer presses and plastic injection moulding machines; Contact devices; Covers and containers of plastic, and bushings for use as electric insulating connectors; Control equipment and apparatus for elevator controllers; Resonators; Indicator, monitor and control apparatus for level, pressure, temperature and quantity for gaseous and liquid media, manometer monitoring switches; Switching equipment, Monitoring apparatus and diagnostic apparatus for technical applications; Apparatus, Instruments and components for conducting, Switching, Converting, Storing, Regulating or controlling electricity; Transducers; Actuators; Sensors, including pressure sensors, Flow sensors, Temperature sensors, Level sensors, Sensors for detecting state variables of liquids and gases, fluid flow sensors, Viscosity sensors, Gas sensors, Conductivity sensors, Sensors for determining relative permittivity, moisture sensors, Optical sensors, Magnetic sensors, Capacitive sensors, Chemical sensors, Thermoelectric sensors, Distance sensors, Incline sensor, Particle counters, piezoelectric actuators, electrostatic actuators and magnetic actuators; Active and passive electric and electronic components; Active and passive electric and electronic components manufactured using thick-film and thin-film technology; Microwave antennae; Magnets, including in combination with valve switching components, except ignition magnets for motors and engines; Optical equipment and apparatus, including cameras, microscopes, optical recording apparatus, in particular for analysis and metrology; Optical particle counting apparatus; Individual parts for electronic apparatus, in particular logical elements, electrotechnical and electronic component parts and units consisting thereof, in particular printed circuits, semiconductor component parts, integrated circuits, memory components, resistors, microprocessors; Circuit boards with electrotechnical and electronic assemblies and component parts of computers and data processing installations, and electric and electronic installations for monitoring, testing and controlling industrial working processes and of apparatus and instruments in the mechanical engineering field, in particular semiconductor components; Electronic, electrotechnical and mechanical apparatus, equipment and instruments, namely for computers and systems composed of the aforesaid goods, including peripheral apparatus connected thereto for recording, displaying; Output and transmission of data and for manufacturing and process engineering; Computers, In particular research, scientific and industrial computers, In particular for technical and scientific applications; Data processing programs for these computers recorded on machine-readable data carriers, in particular magnetic disks and tapes and diskettes; Computer software; Electronic and electrotechnical instruments, devices and equipment parts in the field of manufacture and engineering; Dosimeters; Control apparatus and vehicle stabilisation systems, including roll stabilisation devices.

Abstract

The invention relates to a valve device for mounting on a hydraulic cylinder having a first cylinder port, wherein the valve device has a first cylinder port connection (A') for the connection to the first cylinder port on the hydraulic cylinder, wherein the first cylinder port connection (A') is arranged such that it is optionally connected via a directional valve (22, 36) to a first pressure connection (P1) on the pressure side of the hydraulic pump or to a first tank connection (T1) to a tank. The valve device has a first cylindrical opening (21A) for enclosing a cylindrical connecting element (15), which has a first radial fluid opening (18) which is connected to the first cylinder port, wherein the cylindrical opening (21A) contains the first cylinder port connection (A') on the inside and wherein two seals (28, 30) are arranged such that they seal off the first radial fluid opening (18) so tightly on both sides that a tight connection is produced between the first cylinder port connection (A') and the first radial fluid opening (18) when the connecting element (15) is inserted into the first cylindrical opening (21A).

IPC Classes  ?

• F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
• F15B 15/20 - Other details

Abstract

The present invention relates to a hydraulic auxiliary valve device (1) adapted to be connected to a hydraulic main valve (20) on a work vehicle, which work vehicle comprises a hydraulic system comprising a pump and a tank, the auxiliary valve device (1) comprises: —a first motor port connection (4A) and a second motor port connection (4B) arranged to be connected to a first motor port and a second motor port, respectively, on a double acting hydraulic motor, in particular a double acting hydraulic cylinder, —a pump lead-through (2), which connects the pump input port connection (2A) of the auxiliary valve device (1) to the pump connection output port (2B); —a tank lead-through (3), which connects the tank input port connection (3A) of the auxiliary valve device (1) to the tank connection output port (3B); and —a control valve (IA) provided with two open positions, which control valve (1A) in the first open position connects the pump input port connection (2A) to the first motor port connection (4A) and the tank input port connection (3A) to the second motor port connection (4B), and in the second open position connects the pump input port connection (2A) to the second motor port connection (4B) and the tank input port connection (3A) to the first motor port connection (4A).

IPC Classes  ?

• F15B 13/08 - Assemblies of units, each for the control of a single servomotor only
• F16L 41/02 - Branch units, e.g. made in one piece, welded, riveted
• E02F 9/22 - Hydraulic or pneumatic drives
• F16L 41/12 - Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe using attaching means embracing the pipe
• E02F 3/96 - DredgersSoil-shifting machines mechanically-driven with arrangements for alternate use of different digging elements

Abstract

A method and a device for controlling a load sensing hydraulic system, having a bypass valve (F), which is controlled by a pump pressure (P) and which when the hydraulic system is in operation diverts a pump flow of hydraulic fluid to a tank (E). The bypass valve (F) is pre-stressed towards a closed position and is put on load by the pump pressure (P) towards an open position against the action of the pre-stress. When the hydraulic system operates in a idling operation a first pre-stress element (I) limits the pre-stress to a first pressure and upon activation of the hydraulic system, a pressure regulator (10) increases the pre-stress to a second, substantially higher pressure by applying a hydraulic, constant second pre-stress force, that is added to the first pre-stress force and is substantially greater than this.

IPC Classes  ?

• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
• E02F 9/22 - Hydraulic or pneumatic drives
• B66C 13/18 - Control systems or devices
• B66F 9/22 - Hydraulic devices or systems
• F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
• F15B 11/16 - Servomotor systems without provision for follow-up action with two or more servomotors

Abstract

The invention relates to a hydraulic valve device (1) including a high pressure connection (P′) and a low pressure connection (T′); at least one motor port connection (A′) that is connectable to a motor port (A) on a hydraulic motor (M), preferably a hydraulic cylinder; a flow control valve (F), which is arranged between the high pressure connection (P′) and the motor port connection (A′) and which includes a flow opening (18) that is adjustable between a fully closed position and a fully open position; and a pressure regulator (R) that is arranged between the high pressure connection (P′) and the flow regulating valve (F), wherein a regulator pressure (PR) that acts at a first connection point (3) between the pressure regulator (R) and the flow regulating valve (F) acts on the pressure regulator (R) via a first control conduit (4) to close the same. A second control conduit (5) including a first restrictor (6), is arranged to convey a load pressure (PL) that acts at the motor port connection (A′) from a second connection point (7) positioned between the flow regulating valve (F) and the motor port connection (A′) via the first restrictor (6) to a third connection point (8) at which a first control pressure (Pc) acts and which third connection point (8) is connected to the pressure regulator (R) to act on the same in the opening direction by means of said first control pressure (Pc), wherein the third connection point (8) is connected to the low pressure connection (T), via an adjustable second restrictor (9).

IPC Classes  ?

• F15B 11/05 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
• E02F 9/22 - Hydraulic or pneumatic drives
• F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor

Abstract

c) that is sufficiently narrow to prevent the head of the screw (3,4,5) from passing but sufficiently wide to allow the thread of the screw (3,4,5) to pass.

IPC Classes  ?

• F16B 1/00 - Devices for securing together, or preventing relative movement between, constructional elements or machine parts
• E02F 9/22 - Hydraulic or pneumatic drives

Abstract

Wire attachment and attachment method for a sheathed wire including a wire and a sheath coaxially surrounding the wire, the wire attachment including: a housing; an axial bore inside the housing including an opening adapted to receive the sheathed wire; a spool slidably arranged inside the bore, the spool receiving the wire and including an engagement member for fixedly engaging the wire, such that any longitudinal movement of the wire will be transmitted to the spool; a sheath attachment member for fixing the sheath to the wire attachment inside the axial bore at a distance from the receiving bore, such that the spool and the wire are free to move axially with respect to the sheath. The sheath attachment member is arranged to exert a substantially radial pressure onto the surface of the sheath, such that it may be attached essentially without disturbing the axial position of the sheath.

IPC Classes  ?

• F16C 1/12 - Arrangements for transmitting movement to or from the flexible member

Abstract

A method and a device for controlling a load sensing hydraulic system, having a bypass valve (F), which is controlled by a pump pressure (P) and which when the hydraulic system is in operation diverts a pump flow of hydraulic fluid to a tank (E). The bypass valve (F) is pre-stressed towards a closed position and is put on load by the pump pressure (P) towards an open position against the action of the pre-stress. When the hydraulic system operates in a idling operation a first pre-stress element (I) limits the pre-stress to a first pressure and upon activation of the hydraulic system, a pressure regulator ( 10) increases the pre-stress to a second, substantially higher pressure by applying a hydraulic, constant second pre-stress force, that is added to the first pre-stress force and is substantially greater than this.

IPC Classes  ?

• F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
• E02F 9/22 - Hydraulic or pneumatic drives

Abstract

The invention relates to a hydraulic valve device (1) including a high pressure connection (P') and a low pressure connection (T'); at least one motor port connection (A') that is connectable to a motor port (A) on a hydraulic motor (M), preferably a hydraulic cylinder; a flow control valve (F), which is arranged between the high pressure connection (P') and the motor port connection (A') and which includes a flow opening ( 18) that is adjustable between a fully closed position and a fully open position; and a pressure regulator (R) that is arranged between the high pressure connection (P') and the flow regulating valve (F), wherein a regulator pressure (PR) that acts at a first connection point (3) between the pressure regulator (R) and the flow regulating valve (F) acts on the pressure regulator (R) via a first control conduit (4) to close the same. A second control conduit (5) including a first restrictor (6), is arranged to convey a load pressure (PL) that acts at the motor port connection (A') from a second connection point (7) positioned between the flow regulating valve (F) and the motor port connection (A') via the first restrictor (6) to a third connection point (8) at which a first control pressure (Pc) acts and which third connection point (8) is connected to the pressure regulator (R) to act on the same in the opening direction by means of said first control pressure (Pc), wherein the third connection point (8) is connected to the low pressure connection (T), via an adjustable second restrictor (9).

IPC Classes  ?

• F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
• E02F 9/22 - Hydraulic or pneumatic drives

Abstract

The present invention relates to a hydraulic auxiliary valve device (1) adapted to be connected to a hydraulic main valve (20) on a work vehicle, which work vehicle comprises a hydraulic system comprising a pump and a tank, the auxiliary valve device (1) comprises: - a first motor port connection (4A) and a second motor port connection (4B) arranged to be connected to a first motor port and a second motor port, respectively, on a double acting hydraulic motor, in particular a double acting hydraulic cylinder, - a pump lead-through (2), which connects the pump input port connection (2A) of the auxiliary valve device (1) to the pump connection output port (2B); - a tank lead-through (3), which connects the tank input port connection (3A) of the auxiliary valve device (1) to the tank connection output port (3B); and - a control valve (IA) provided with two open positions, which control valve (1A) in the first open position connects the pump input port connection (2A) to the first motor port connection (4A) and the tank input port connection (3A) to the second motor port connection (4B), and in the second open position connects the pump input port connection (2A) to the second motor port connection (4B) and the tank input port connection (3A) to the first motor port connection (4A).

IPC Classes  ?

• F15B 13/06 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
• E02F 9/22 - Hydraulic or pneumatic drives

Abstract

The present invention related to an electric switching device comprising a cover shaped casing (1), one or more in the casing (1) included actuation parts (34) belonging to the respective electric switching circuit (32) and a membrane (35) creating a part of the casing (1) and is arranged as a protecting cover placed at a location directly above every actuation part (34). During push-down, the membrane (35) is arranged to cooperate with the actuation part (34) so that electric connection is established or broken. The switching devices (32) can be arranged on a carrier (31), for example an electric circuit, which carrier (31) is detainingly carried by holding means (30) in the cover shaped casing (1) or in a frame (4) included in the casing (1). A method of manufacturing such an electric switching device is also provided.

IPC Classes  ?

• H01H 13/06 - Dustproof, splashproof, drip-proof, waterproof, or flameproof casings

Abstract

Snap lock comprising two lock parts (1, 2), where a first lock part (1) has a slotted sleeve (4) provided with a constriction (16) which when being pressed out is mountable on a second lock part (2) over a front end section (8) thereof, wherein said sleeve (4) firstly is put in a pressed out position before the sleeve (4) at reached locking position is kept blocked against being taken off by cooperation between constriction and a thickening (10) arranged on the front end section (8) of the second lock part (2). A friction means (21) is arranged in the area between contact surfaces of the second lock part (2) and the sleeve (4) so that the contact pressure on the friction means (21) is varying when switching the constriction between the locking position and the pressed out position, wherein the friction means when affected by the snap effect is brought to elastic deformation between the contact surfaces in the locking position to prevent turning.

IPC Classes  ?

• F16B 21/07 - Releasable fastening devices with snap action in which the socket has a resilient part

Abstract

The present invention relates to an electrical device (5) including an electric cable (1) with an electrically conducting core (3) enclosed by an insulating sheath (2). A moulded casting (4) is arranged around the electric cable (1) in a section along the electric cable of a length (LI) and seals against the insulating sheath (2) in at least a first outer section of a length (L3) along the electric cable (1). The moulded casting (4) or the insulating sheath (2) penetrates and seals against the electrically conducting core (3) in a inner section of a length (L2) along the electric cable (1), wherein the electrical device (5) is damp proof along the electric cable (1). The invention also relates to a method of producing such an electrical device.

IPC Classes  ?

• H01R 13/52 - Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
• H01B 7/282 - Preventing penetration of fluid into conductor or cable

Abstract

A hydraulic load control valve (10) accommodated between a hand valve (H) and a hydraulic engine (D) has got at least one proportional load control valve (E), controlled by the pump pressure independent of the flow of hydraulic fluid to the engine. The flow to the engine (D) flows via a non-return valve (12), that is prestressed to open at a pump pressure above the upper limit before a given pressure interval, within which the load control valve (E) is adjusted between completely closed and completely open position of the pump pressure.

IPC Classes  ?

• F15B 11/024 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits

Abstract

A Hydraulic valve device includes a first engine port and a second engine port to a double acting hydraulic motor, and a pump, a hand valve, which is arranged such that it connects the engine ports to the tank and the pump, and which hand valve has two open positions, wherein the pump in the first open position via a line is connected to the first engine port and the tank via a line is connected to the second engine port, and wherein the pump in the second open position via the line is connected to the second engine port and the tank via the line is connected to the first engine port, and a first nonreturn valve, arranged between the pump and the second engine port and opens towards the second engine port. A piston which by way of the load pressure in the first engine port via a line governs the first nonreturn valve, such that it is kept closed as long as the pump pressure does not exceed the load pressure, and a second nonreturn valve arranged such that it, as long as the hand valve is in its first open position, connects the first engine port to the second engine port and opens in direction towards the second engine port.

IPC Classes  ?

• F15B 11/024 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
• F15B 11/044 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed by means in the return line

Abstract

For a hydraulic system of a work vehicle, a fixed connector part fixedly arranged thereon. A fixed connector part has a plurality of hydraulic couplings. A hydraulic work system of a work equipment has hydraulic couplings which are either a movable part having a plurality of hydraulic couplings or a plurality of individual hydraulic connections, each having a hydraulic coupling. The movable connector part is connectable to the fixed connector part by a locking device. The hydraulic couplings of the fixed connector part are constructed to be hydraulically coupled to the hydraulic couplings of the movable connector part and alternatively to the hydraulic couplings of the plurality of individual hydraulic couplings.

IPC Classes  ?

• F16L 39/00 - Joints or fittings for double-walled or multi-channel pipes or pipe assemblies

Abstract

The present invention provides a valve fastening means (1) for attaching a hydraulic valve (2) to a tractor (13). The valve fastening means (1) comprises a tractor part (Ia) adapted to be attached on the tractor and a valve part (Ib adapted for direct assembly of the valve (2), wherein the valve (2) comprises at least two screw holes (10,11,12), each adapted to receive a screw (3,4,5). The valve part (Ib) of the valve fastening means (1) comprises at least two slits (6,7,8), of which at least a first slit (6,8) comprises an opening (6a,8a) adapted to let the head of the screw pass, and all slits comprises a groove (6b, 7, 8b, 8c) that is sufficiently narrow to prevent the head of the screw (3,4,5) from passing but sufficiently wide to allow the thread of the screw (3,4,5) to pass.

IPC Classes  ?

• E02F 9/22 - Hydraulic or pneumatic drives
• F16B 3/00 - Key-type connectionsKeys

Abstract

The present invention provides a mounting structure for hydraulic hoses with improved flexibility. The mounting structure comprises a mounting plate (11,21,31,41) with at least one recess (12,22,32,42) adapted to receive a coupling (13,23,33,43) for coupled hydraulic hoses (18), which is or is adapted to be connected to a mounted hydraulic hose(18).Said coupling comprises: a first section (14,24,34,44) that will abut on one side of the mounting plate; a second section (15,25,35,45) that has a diameter that is smaller than the diameter of the recess of the mounting plate and that is adapted to be received in the recess in the mounting plate; and a third section (16,26, 36,46) that will abut the opposite side of the mounting plate; whereby the coupling is rotatably arranged in the mounting plate.

IPC Classes  ?

• F16L 3/00 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets

Abstract

A holding device to protect a movable connector part of a hydraulic system on work equipment, which mates with a fixed connector part of a hydraulic system on a work vehicle. The holding device is fixedly mounted on the work equipment and has recesses which receive and protect the hydraulic connections of the movable connector part when they are not engaged with the fixed connector part. The holding device may have a contact surface which mates with the hydraulic connectors of the movable part. The recess or recesses can receive a multipart hydraulic connector or a plurality of individual connectors. The holding device may include an electrical connector dummy for attachment to an electrical connector on the work equipment. A cover fits over the holding device when it is not engaged by a movable connector part; and it also mates with the fixed connector part when it is not engaged by the movable connector part.

IPC Classes  ?

• F16L 11/12 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting

Abstract

A hydraulic load control valve (10) accommodated between a hand valve (H) and a hydraulic engine (D) has got at least one proportional load control valve (E), controlled by the pump pressure independent of the flow of hydraulic fluid to the engine. The flow to the engine (D) flows via a non-return valve (12), that is prestressed to open at a pump pressure above the upper limit before a given pressure interval, within which the load control valve (E) is adjusted between completely closed and com- pletely open position of the pump pressure.

IPC Classes  ?

• E02F 9/22 - Hydraulic or pneumatic drives
• F15B 13/01 - Locking-valves or other detent devices

Abstract

The invention relates to Hydraulic valve device comprising a first engine port (L) and a second engine port (N) to a double acting hydraulic motor (D), in particular a double acting hydraulic cylinder, a tank (T), and a pump (I), a hand valve (H), which is arranged such that it connects the engine ports (L, N) to the tank (T) and the pump (I), and which hand valve (H) has two open positions, wherein the pump (I) in the first open position via a line (F) is connected to the first engine port (L) and the tank (T) via a line (G) is connected to the second engine port (N), and wherein the pump (I) in the second open position via the line (G) is connected to the second engine port (N) and the tank (T) via the line (F) is connected to the first engine port (L), and a first nonreturn valve (IA, 8), which is arranged between the pump (I) and the second engine port (N) and opens towards the second engine port (N). Further, a piston (2), which by means of the load pressure in the first engine port (L) via a line (E) governs the first nonreturn valve (IA, 8), such that it is kept closed as long as the pump pressure does not exceed said load pres¬ sure, and a second nonreturn valve (3), which is arranged such that it, as long as the hand valve (H) is in its first open position, connects the first engine port (L) to the second engine port (N) and opens in direction towards the second engine port (N).

IPC Classes  ?

• E02F 9/22 - Hydraulic or pneumatic drives
• F15B 13/01 - Locking-valves or other detent devices

Abstract

Holding means (30) for protecting a movable connector part (20; 24a-d) of a hydraulic system on a work equipment (2), which movable 5 connector part (20; 24a-d) is connectable to a fixed connector part (10) of a hydraulic system of a work vehicle (1), the holding means (30) having a contact surface (32) being adapted to mate with the movable connector part (20; 24a-d) such that its hydraulic connections are protected and unexposed when it is placed in the holding means (30). 10 The holding means (30) is adapted to be fixedly arranged on the work equipment (2), such that said contact surface (32) of the holding means (30) is accessible for protective connection of the movable connector part (20; 24a-d).

IPC Classes  ?

• F16L 55/24 - Preventing accumulation of dirt or other matter in pipes, e.g. by traps, by strainers
• A01B 59/06 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors
• E02F 9/22 - Hydraulic or pneumatic drives

Abstract

Fixed connector part (10), adapted to constitute an end part of a hydraulic system of a work vehicle (1) and intended to be fixedly arranged on the work vehicle (1), the fixed connector part (10) comprising: at least two hydraulic couplings (14a-d); a first locking means (13, 16), which is intended to interact with a second locking means (23, 26) on a movable connector part (20), which constitutes an end part of a hydraulic system of a work equipment (2), wherein the first and second locking means are inter-connectable such that the hydraulic couplings of the fixed connector part (10) and the movable connector part (20), respectively, may be simultaneously interconnected through the interaction of the first and second locking means. Further each hydraulic coupling (14a-d) of the fixed connector part (10) comprises individual couplings, such that each hydraulic coupling (14a-d) of the fixed connector part (10) may be individually connected to a separate hydraulic coupling (24a-d). The invention also involves an arrangement including such a fixed connector part.

IPC Classes  ?

• F16L 37/084 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking
• A01B 59/06 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors
• E02F 9/22 - Hydraulic or pneumatic drives

Abstract

Wire attachment (1) for a sheathed wire (20) including a wire (21) and a sheath (22) coaxially surrounding the wire, the wire attachment (1) comprising: a housing (2); an axial bore (10) inside the housing including an opening (10a) adapted to receive the sheathed wire (20); a spool (5) slidably arranged inside the bore (10), the spool being adapted to receive the wire (21) and comprises an engagement member (6) for fixedly engaging the wire (21), such that any longitudinal movement of the wire (21) will be transmitted to the spool (5); a sheath attachment member (3) for fixing the sheath (22) to the wire attachment (1) inside the axial bore (10) at a distance from the receiving bore (10), such that the spool (5) and the wire (21) is free to move axially with respect to the sheath (22). Further, the sheath attachment member (3) is arranged to exert a substantially radial pressure onto the surface of the sheath (22), such that it may be attached essentially without disturbing the axial position of the sheath (22). The invention also relates to a method of attaching a sheathed wire (20).

IPC Classes  ?

• F16G 11/06 - Means for fastening cables or ropes to one another or to other objectsCaps or sleeves for fixing on cables or ropes with laterally-arranged screws
• F16C 1/14 - Construction of the end-piece of the flexible memberAttachment thereof to the flexible member
• F16C 1/22 - AdjustingCompensating length