Abstract

The invention relates to an arrangement in a pneumatic cylinder comprising a rear end (2), a front end (4) and a pressure space (11) there between, the pressure space (11) containing a piston (20) reciprocating in the pressure space (11) and having a piston rod (5) whose free end projects, through a structure (17) guiding the piston rod (5), out of the pressure space (11 ), wherein a play (25) is provided between the guiding structure (17) and the piston rod (5) to conduct the pressure medium out of the pressure space (11) during the movement of the piston rod (5). Further, the pneumatic cylinder comprises a first pressure medium flow channel (9) leading to a first side of the piston (20) and a second pressure medium flow channel (12) leading to a second side of the piston, as well as structures damping the reciprocating movement of the piston (20) at the extreme ends of the movement, including at least dampers (16 and 22). The structures damping the reciprocating movement of the piston (20) at the extreme ends of the movement comprise a first structure (24) and a second structure (18) restricting the amount of flow leaving during the damping.

IPC Classes  ?

• F15B 15/22 - Other details for accelerating or decelerating the stroke

Abstract

The invention relates to an apparatus and a method for dosing a lubricant into compressed-air supplied to an air motor. According to the invention, the lubricant is stored in a lubricant storage space (17) from which the lubricant is led, along a lubricant line (19), to a doser (20). The doser (20) doses the lubricant into a dosing line and, therefrom, into a compressed-air line (12) extending to the air motor. The amount of lubricant contained in the storage space (17) is controlled by changing the volume of the storage space (17) by directing the pressure of the compressed-air line (12) to the lubricant storage space (17).

IPC Classes  ?

• F16N 7/30 - Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
• F16N 7/38 - Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pumpCentral lubrication systems
• F16N 19/00 - Lubricant containers for use in lubricators or lubrication systems

Abstract

The oscillation cylinder arrangement (100) comprises a working cylinder (10A) and a piston with a rod (27A), arranged to move therein, and a control valve structure (20) for the working cylinder (10A). The control valve structure (20) incorporates a main valve (24) for transmitting a pressure medium to a first sub-chamber or a second sub-chamber of the working cylinder (10A) for a linear movement (A, B) of the piston, as well as impulse valves (22, 23), and lever arms (25, 26) for controlling them, in order to set the operational state of the main valve (24). Control members (27B) fixed to the piston rod (27A) moving in the working cylinder (10A), the control members (27B) being arranged to contact the lever arms (25, 26) of the impulse valves in order to define the extreme positions of the movement of the piston rod (27A).

IPC Classes  ?

• F15B 15/04 - Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member with oscillating cylinder

Goods & Services

Pneumatic and hydraulic components, namely compressors, motors and containers; pneumatic actuators, cylinders, valves; pneumatic installation accessories, namely pipes, hoses, distributor blocks and couplings, fittings for piping, cylinders, valves, machine parts, compressors, motors, containers; pneumatic door openers and door closers; pneumatic valve housings, namely control housings for pneumatic valves; vacuum components, namely suction cups, grippers and ejectors. Door arrangements and doors for vehicles and railway cars. Installation, upkeep, maintenance, repair and modernization services for door arrangements, doors and door openers and door closers. Technological support services relating to installation and use of door arrangements, doors and door openers and door closers.

Abstract

The oscillation cylinder arrangement (100) comprises a working cylinder (10A) and a piston with a rod (27A), arranged to move therein, and a control valve structure (20) for the working cylinder (10A). The control valve structure (20) incorporates a main valve (24) for transmitting a pressure medium to a first sub-chamber or a second sub-chamber of the working cylinder (10A) for a linear movement (A, B) of the piston, as well as impulse valves (22, 23), and lever arms (25, 26) for controlling them, in order to set the operational state of the main valve (24). Control members (27B) fixed to the piston rod (27A) moving in the working cylinder (10A), the control members (27B) being arranged to contact the lever arms (25, 26) of the impulse valves in order to define the extreme positions of the movement of the piston rod (27A).

IPC Classes  ?

• F15B 15/04 - Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member with oscillating cylinder

Abstract

The invention relates to an apparatus and a method for dosing a lubricant into compressed-air supplied to an air motor. According to the invention, the lubricant is stored in a lubricant storage space (17) from which the lubricant is led, along a lubricant line (19), to a doser (20). The doser (20) doses the lubricant into a dosing line and, therefrom, into a compressed-air line (12) extending to the air motor. The amount of lubricant contained in the storage space (17) is controlled by changing the volume of the storage space (17) by directing the pressure of the compressed-air line (12) to the lubricant storage space (17).

IPC Classes  ?

• F16N 7/30 - Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
• F16N 7/38 - Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pumpCentral lubrication systems
• F16N 19/00 - Lubricant containers for use in lubricators or lubrication systems
• F16N 3/16 -
• F15B 11/06 - Servomotor systems without provision for follow-up action involving features specific to the use of a compressible medium, e.g. air, steam

Abstract

An arm structure intended for controlling the impulse valve (5) of the oscillating cylinder which performs a back and forth movement whereupon the oscillating cylinder comprises a cylinder body ( 14), a cylinder chamber (1) formed into the mentioned body, a piston (2) which can be moved in the cylinder chamber with the help of a pressure media, feeding channels (15, 16, 17) of the pressure media to the cylinder chamber (1) and control devices in order to direct the pressure media to the cylinder chamber to various sides of the piston and away from the cylinder chamber in order to achieve a back and forth movement for the piston and whereupon the impulse valves (5) belong to the control devices the operation of which at least one arm (10); (12), which explores mechanically the position of the piston arm (7) the movement of which arm is adjusted to open the pressure relieving channel of the impulse valve (5). The contact element which can be moved in relation to the arm, is adjusted to the arm which contact element opens the mentioned pressure relieving channel.

IPC Classes  ?

• F15B 15/04 - Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member with oscillating cylinder
• F15B 11/15 - Servomotor systems without provision for follow-up action with only one servomotor with special provision for automatic return

Abstract

An arrangement in combination with an oscillating cylinder (1), whereby the arrangement includes a working valve (10) of cylinder (1) to transmit pressure medium into cylinder (1), impulse valves (5) by means of which, by working valve is controlled, control means (4), as discs, from movable piston rod (18) to cylinder (1) outside, which can be arranged to get in several different linear positions in contact with the control means impulse valves (5) in order to produce a stroke length set for the piston rod of the oscillation cylinder. In the arrangement the impulse valves are placed sideways outside control means (4) and the required impact to be achieved from the control means (to the impulse valves (5) is moved by means of special arms (13) moved from control means (4) as an opening/closing motion of the shut-off part of the impulse valves whereby the structural length of the oscillating cylinder can be achieved essentially shorter in the cylinder back end of control means (4), (5).

IPC Classes  ?

• F01L 25/02 - Drive, or adjustment during operation, of distribution or expansion valves by non-mechanical means by fluid means

Abstract

An arrangement in combination with an oscillating cylinder (1), whereby the arrangement includes a working valve (10) of cylinder (1) to transmit pressure medium into cylinder (1), impulse valves (5) by means of which, by working valve is controlled, control means (4), as discs, from movable piston rod (18) to cylinder (1) outside, which can be arranged to get in several different linear positions in contact with the control means impulse valves (5) in order to produce a stroke length set for the piston rod of the oscillation cylinder. In the arrangement the impulse valves are placed sideways outside control means (4) and the required impact to be achieved from the control means (to the impulse valves (5) is moved by means of special arms (13) moved from control means (4) as an opening/closing motion of the shut-off part of the impulse valves whereby the structural length of the oscillating cylinder can be achieved essentially shorter in the cylinder back end of control means (4), (5).

IPC Classes  ?

• F15B 11/15 - Servomotor systems without provision for follow-up action with only one servomotor with special provision for automatic return
• F15B 15/04 - Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member with oscillating cylinder
• F15B 15/24 - Other details for restricting the stroke