Abstract

A suspended axle for a tractor, the axle having a lower link mechanism selectively operable between a first configuration in which the lower links are in fixed relation to the suspended axle and a second configuration in which the lower links are isolated from the suspended axle.

IPC Classes  ?

• B60G 9/00 - Resilient suspensions for a rigid axle or axle housing for two or more wheels
• A01B 59/06 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors
• A01B 63/114 - Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements to achieve a constant working depth

Abstract

An agricultural tractor comprises an engine and a cooling package supported in front of a cab. The cooling package comprises a radiator and fan disposed between the engine and cab, the radiator having a major surface which is aligned longitudinally so that an airflow forced through the radiator by the fan is generally transverse with respect to the tractor's forward direction of travel. The orientation of the radiator provides for a narrower front end installation which improves the driver's field of view and relaxes limitations on steering angles and cooling package size.

IPC Classes  ?

• B60K 11/04 - Arrangement or mounting of radiators, radiator shutters, or radiator blinds
• B62D 49/00 - Tractors

Abstract

A tractor includes an internal combustion engine for delivering torque, wheels or tracks for imparting a propulsive force to the ground, and a power takeoff shaft for delivering torque to implements attached thereto. The power takeoff shaft is driven by a mechanical drive connection to the engine. An electrical motor/generator is drivingly connected to the engine, and at least one electrical motor is arranged to deliver a propulsion force to the wheels or tracks. The motor is electrically connected to, and powered by, the electrical motor/generator. A battery is connected to the electrical motor/generator and to the electrical motor so that electrical energy can be passed therebetween. The motor/generator can also operate as a motor so that the power takeoff shaft is at least partially powered by electrical energy from the battery.

IPC Classes  ?

• B60K 1/02 - Arrangement or mounting of electrical propulsion units comprising more than one electric motor
• B60K 6/46 - Series type
• B60K 6/52 - Driving a plurality of drive axles, e.g. four-wheel drive
• B60K 25/06 - Auxiliary drives from the transmission power take-off
• B60K 17/28 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off
• B60W 10/08 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
• B60W 20/00 - Control systems specially adapted for hybrid vehicles
• B60W 30/188 - Controlling power parameters of the driveline, e.g. determining the required power
• B60K 25/02 - Auxiliary drives directly from an engine shaft
• B60K 25/00 - Auxiliary drives

Abstract

A rear hitch assembly for a tractor, the assembly including a support frame for attachment to the tractor chassis, and a removable hitch plate which engages with the support frame when in use, the assembly including a latchable retainer which engages the hitch plate so as to position and secure the plate on the frame.

IPC Classes  ?

• A01B 59/042 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor having pulling means arranged on the rear part of the tractor
• B60D 1/02 - Bolt or shackle-type couplings

Abstract

A front loader frame (30) for a tractor (10) having a U-shaped profile which extends from a chassis rails (14) of the tractor to form an enclosed frame for supporting the loader arms.

IPC Classes  ?

• B62D 49/06 - Tractors adapted for multi-purpose use
• B62D 49/02 - Tractors modified to take lifting devices
• E02F 3/627 - Devices to connect beams or arms to a tractor or similar self-propelled machine
• A01D 87/00 - Loaders for hay or like field crops

Abstract

A suspended axle for a tractor, the axle having a lower link mechanism selectively operable between a first configuration in which the lower links are in fixed relation to the suspended axle and a second configuration in which the lower links are isolated from the suspended axle.

IPC Classes  ?

• B60G 9/00 - Resilient suspensions for a rigid axle or axle housing for two or more wheels
• A01B 51/02 - Undercarriages specially adapted for mounting-on various kinds of agricultural tools or apparatus propelled by a motor
• A01B 59/06 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors
• A01D 67/00 - Undercarriages or frames specially adapted for harvesters or mowersMechanisms for adjusting the framePlatforms
• B62D 49/06 - Tractors adapted for multi-purpose use
• A01B 63/102 - Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means characterised by the location of the mounting on the tractor, e.g. on the rear part
• A01B 63/111 - Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements

Abstract

A steering column assembly (30) for a vehicle (10), the assembly having a steering wheel (32) for steering the vehicle, a brake pedal (34) for operating the vehicle brakes, wherein the steering wheel (32) and a pivot (44) for the brake pedal are carried on a four bar mechanism (52) mounted on the vehicle.

IPC Classes  ?

• B62D 1/189 - Steering columns yieldable or adjustable, e.g. tiltable with tilt adjustmentSteering columns yieldable or adjustable, e.g. tiltable with tilt and axial adjustment the entire steering column being tiltable as a unit
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 7/06 - Disposition of pedal
• G05G 1/44 - Controlling members actuated by foot pivoting

Abstract

An agricultural tractor (10) comprises an engine (26) and a cooling package (24) supported in front of a cab (18). The cooling package comprises a radiator (30) and fan (28) disposed between the engine and cab, the radiator having a major surface which is aligned longitudinally so that an airflow forced through the radiator by the fan is generally transverse with respect to the tractor's forward direction of travel. The orientation of the radiator provides for a narrower front end installation which improves the driver's field of view and relaxes limitations on steering angles and cooling package size.

IPC Classes  ?

• B60K 13/02 - Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning intake
• B60K 11/04 - Arrangement or mounting of radiators, radiator shutters, or radiator blinds
• B62D 49/00 - Tractors
• B62D 49/02 - Tractors modified to take lifting devices

Abstract

A rear hitch assembly (10) for an agricultural tractor is provided. The assembly comprises a drawbar carrier element (20) mounted to the underside of a chassis (13) by a first connection which permits fore and aft movement of the carrier element relative to the chassis. A second connection includes a load sensor (30) which senses horizontal load placed upon the carrier element. Implement connector elements such as drawbars (22) and connector plates (15) are attached to the carrier in a fixed positional relationship. The horizontal load is isolated from the vertical load and measured by the load sensor to provide load information which can be utilised by brake systems for example.

IPC Classes  ?

• A01B 59/042 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor having pulling means arranged on the rear part of the tractor
• A01B 59/00 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements

Abstract

An agricultural tractor (10) control system comprising an electronic control unit (ECU) (16) is provided in addition to a method of controlling a tractor (10). The ECU (16) is arranged to receive in real time signals from a plurality of sensors (40, 42) associated with operating functions of the tractor. The ECU (16) is also arranged to output control signals to a plurality of controlled operating components. Macroinstructions, or macros, are inputted to the ECU (16) by a user by direct definition or Internet download for example. Each macro comprises a condition and a command. The condition includes a trigger value and a corresponding input variable sensed by a respective sensor (40, 42, 50). The command involves the transmission of one of said output control signals to control an operating component in a predetermined manner. The ECU (16) is operable to run said macro during which the command is executed in response to the condition being met.

IPC Classes  ?

• G06F 17/00 - Digital computing or data processing equipment or methods, specially adapted for specific functions
• A01B 79/00 - Methods for working soil
• G05D 1/02 - Control of position or course in two dimensions
• A01B 69/04 - Special adaptations of automatic tractor steering, e.g. electric system for contour ploughing
• B60K 37/00 - Dashboards

Abstract

A tank intended for the storage of hydrogen by absorption into material, including a first part (I) and a second part (II), each of the first (I) and second (II) parts including a barrel (4), closed at one first longitudinal end (4.1) by a substantially hemispherical part (6), the two parts (I, II) being joined by the second open longitudinal end (4.2) of the barrel (4) by means of an assembly plate (2), the above-mentioned tank including two heat exchangers (12), each being contained in one of the two parts (I, II) and intended to be under the same hydrogen pressure, the above- mentioned tank also having means of supply and evacuation of heat transfer medium circulating in the above-mentioned heat exchangers integrated in the assembly plate, and means of supply and collection of hydrogen.

IPC Classes  ?

• F17C 11/00 - Use of gas-solvents or gas-sorbents in vessels

Abstract

A utility vehicle such as an agricultural tractor comprises a steerable wheel secured to a wheel carrier which is mounted to a vehicle frame. The wheel is steerable through a range of steering angles about a substantially vertical steering axis A fender is mounted above the wheel on a support arm. The support arm is fixed relative to the wheel carrier so as to pivot with the wheel during steering through the whole of said range. The fender is pivotally mounted to the support arm at a pivoting mount located above the wheel. The fender is forced to pivot with respect to the wheel and support arm when the fender engages the vehicle frame.

IPC Classes  ?

• B62D 25/16 - Mud-guards or wingsWheel cover panels
• B62D 25/18 - Parts or details thereof, e.g. mud-guard flaps

Abstract

An agricultural tractor (10) comprises an engine (26) and a cooling package (24) supported in front of a cab (18). The cooling package comprises a radiator (30) and fan (28) disposed between the engine and cab, the radiator having a major surface which is aligned longitudinally so that an airflow forced through the radiator by the fan is generally transverse with respect to the tractor's forward direction of travel. The orientation of the radiator provides for a narrower front end installation which improves the driver's field of view and relaxes limitations on steering angles and cooling package size.

IPC Classes  ?

• B60K 11/04 - Arrangement or mounting of radiators, radiator shutters, or radiator blinds

Abstract

A tractor (100) comprises an internal combustion engine (107) for delivering torque, wheels (101-104) or tracks for imparting a propulsive force to the ground, and a power takeoff shaft (110) for delivering torque to implements attached thereto. The power takeoff shaft is driven by a mechanical drive connection to the engine. An electrical motor/generator (115) is drivingly connected to the engine, and at least one electrical motor (121-124) is arranged to deliver a propulsion force to the wheels or tracks. The motor is electrically connected to, and powered by, the electrical motor/generator. A battery (120) is connected to the electrical motor/generator and to the electrical motor so that electrical energy can be passed therebetween. The motor/generator can also operate as a motor so that the power takeoff shaft is at least partially powered by electrical energy from the battery.

IPC Classes  ?

• B60K 6/46 - Series type
• B60K 17/28 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off
• B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
• B60K 25/02 - Auxiliary drives directly from an engine shaft

Abstract

A linkage control system (20) for use on an agricultural tractor (10) is provided. The system comprises a three-point linkage arrangement for attaching an implement (12). The linkage has two lift arms (14) and an automatically adjustable top link (16). The system further comprises an electronic control unit (ECU) that controls the length of the top link. The ECU has an input for receiving a signal representative of implement pitch from an angle sensor (26) disposed on the attached implement. The ECU, in response to an activation command received from a driver, adjusts the length of the top link to achieve a target implement pitch.

IPC Classes  ?

• A01B 59/00 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements
• A01B 63/114 - Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements to achieve a constant working depth

Abstract

A door latch mechanism (10) comprises a pin (11) having an elongate axis, and releasable jaw means (12) comprising a pair of jaw elements (18) which engage the pin therebetween to latch a door (16) in a closed position to a door frame (14). The pin is mounted on the door or the door frame with biasing means, such as a pair of springs, so as to allow the pin to move substantially linearly in a direction perpendicular to the elongate axis of the pin and substantially parallel to the plane of the door when in the closed position. The movement of the pin (11) allowed by the biasing means caters for any vertical displacement of the door caused by worn hinges for example without any forced distortion of the door. The invention is of particular benefit to doors having no frame and which are susceptible to flexing and come with the associated risk of structural failure.

IPC Classes  ?

• E05C 9/12 - Actuating mechanisms for bars with gears and racks

Abstract

A tractor (10) comprising a power takeoff stub (20) which is drivingly connected to an engine (12) by a driveline (14) is provided. A power takeoff clutch (16) is provided in the driveline for selectively powering the power takeoff stub. A first hydraulic pump (26) is drivingly connected to the driveline between the engine and the power takeoff clutch, while a hydraulic pump/motor (30) is drivingly connected to the driveline between the power takeoff clutch and the power takeoff stub. The pump/motor can operate as a pump driven by the connection to the driveline so as to deliver an additional hydraulic output (B) when required for high capacity implements for example. The PTO clutch (16) can be employed to selectively control operation of the pump/motor. Alternatively, the pump/motor can serve as a motor driven by a hydraulic connection (35) to the first hydraulic pump. In combination with disengagement of the PTO clutch, the pump/motor can provide a hydrostatic drive for the PTO stub.

IPC Classes  ?

• G06G 7/00 - Devices in which the computing operation is performed by varying electric or magnetic quantities
• B60K 25/02 - Auxiliary drives directly from an engine shaft

Abstract

A utility vehicle (10) comprising a cab (12) mounted to a frame (14) by cab suspension means (16) is provided. The cab suspension comprises rolling linkage (20) which permits only circumferential movement of the cab around a generally longitudinal axis (24;44), and vertical linkage (22) which permits only radial movement of the cab relative to said axis (24) or radial movement of the axis (44) relative to the frame. The rolling linkage and vertical linkage are connected in series between the cab and the frame thus allowing independent resolution of rolling movement and vertical movement. The cab suspension means further comprises two spring/dampers (28,38; 58,38) arranged to independently control the stiffness and damping within the two degrees of freedom, namely roll and vertical movement.

IPC Classes  ?

• B62D 33/067 - Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other tiltable
• B62D 33/10 - Superstructures for load-carrying vehicles characterised by the connection of the superstructure to the vehicle frame comprising means for the suspension of the superstructure on the frame

Abstract

A rear hitch assembly (10) for an agricultural tractor is provided. The assembly comprises a drawbar carrier element (20) mounted to the underside of a chassis (13) by a first connection which permits fore and aft movement of the carrier element relative to the chassis. A second connection includes a load sensor (30) which senses horizontal load placed upon the carrier element. Implement connector elements such as drawbars (22) and connector plates (15) are attached to the carrier in a fixed positional relationship. The horizontal load is isolated from the vertical load and measured by the load sensor to provide load information which can be utilised by brake systems for example.

IPC Classes  ?

• A01B 59/00 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements
• A01B 59/042 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor having pulling means arranged on the rear part of the tractor

Abstract

A rear-view mirror assembly is mounted to the side of a utility vehicle cab which comprises a door hinged to a front pillar of the cab. The assembly comprises a mirror support bracket for supporting a rear-view mirror in a position which at least partly resides within a swept volume of the door. The support bracket is pivotally mounted to the cab and a rod is connected between the support bracket and the door. The mirror pivots upwardly to a position outside said swept volume as the door is opened, effectively ‘leapfrogging’ the door.

IPC Classes  ?

• G02B 7/182 - Mountings, adjusting means, or light-tight connections, for optical elements for prismsMountings, adjusting means, or light-tight connections, for optical elements for mirrors for mirrors

Abstract

An agricultural tractor (10) control system comprising an electronic control unit (ECU) (16) is provided in addition to a method of controlling a tractor (10). The ECU (16) is arranged to receive in real time signals from a plurality of sensors (40, 42) associated with operating functions of the tractor. The ECU (16) is also arranged to output control signals to a plurality of controlled operating components. Macroinstructions, or macros, are inputted to the ECU (16) by a user by direct definition or Internet download for example. Each macro comprises a condition and a command. The condition includes a trigger value and a corresponding input variable sensed by a respective sensor (40, 42, 50). The command involves the transmission of one of said output control signals to control an operating component in a predetermined manner. The ECU (16) is operable to run said macro during which the command is executed in response to the condition being met.

IPC Classes  ?

• A01B 69/00 - Steering of agricultural machines or implementsGuiding agricultural machines or implements on a desired track
• A01B 79/00 - Methods for working soil
• G05D 1/02 - Control of position or course in two dimensions

Abstract

A tractor rear hitch (10) comprising a drawbar (24) and a drawbar support frame (26) is provided. The drawbar is secured to the support frame by a pin (30) which is inserted through respective holes in the support frame and the drawbar. A drawbar release member (40) comprises a lever (42) which is pivotally mounted to the support frame. The drawbar release member is pivotally connected at a forward end (40a) to the pin so as to lift the pin, and thus release the drawbar, when a rear end of the lever is forced downward. A pedal (50) is mounted to the rear end of the lever which allows an operator to force the lever downwards using their foot. The provision of a pedal-operated release mechanism delivers a significant ergonomic advantage in that the operator no longer need apply the pin lifting force with their hands close to the ground.

IPC Classes  ?

• B60D 1/52 - Traction couplingsHitchesDraw-gearTowing devices characterised by the mounting removably mounted

Abstract

c) of the seat tray in the seating position becomes the lower-most edge in the stowed position and is longitudinally aligned with respect to the forward direction of travel. Advantageously, the seat tray pivots from the seating position to the stowed position in a single fluid movement.

IPC Classes  ?

• B60N 2/30 - Non-dismountable seats storable in a non-use position, e.g. foldable spare seats
• B60N 2/38 - Seats specially adapted for vehiclesArrangement or mounting of seats in vehicles for particular purposes or particular vehicles specially constructed for use on tractors or like off-road vehicles
• B60N 2/02 - Seats specially adapted for vehiclesArrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable

Abstract

A tractor (100) comprises an internal combustion engine (107) for delivering torque, wheels (10 -104) or tracks for imparting a propulsive force to the ground, and a power takeoff shaft (110) for delivering torque to implements attached thereto. The power takeoff shaft is driven by a mechanical drive connection to the engine. An electrical motor/generator (1 15) is drivingly connected to the engine, and at least one electrical motor (121-124) is arranged to deliver a propulsion force to the wheels or tracks. The motor is electrically connected to, and powered by, the electrical motor/generator. A battery (120) is connected to the electrical motor/generator and to the electrical motor so that electrical energy can be passed therebetween. The motor/generator can also operate as a motor so that the power takeoff shaft is at least partially powered by electrical energy from the battery.

IPC Classes  ?

• B60K 17/28 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off
• B60K 6/46 - Series type

Abstract

A tractor power take-off drive line having an output shaft (11) with a socket (12) within which a removeable PTO stub shaft (13) is drivingly received. The stub shaft is retained in the socket by radially moveable retaining members (16) housed in the output shaft and moveable between a radially inward retaining position in which the retaining members each projecting into the socket (12) to engage a retaining formation (18) in the stub shaft (13) within the socket and a radially outward releasing position in which the retaining members are free to move radially outwardly relative to the socket to disengage the retaining formation and allow the stub-shaft to be removed from the socket. The retaining members (16) are moved between their retaining and releasing positions by an actuating sleeve (19, 29) which is axially slidable on the output shaft (11) by a tractor operator between a first retaining position in which a first stub shaft designed to be driven at a first output speed is retained in position in the socket, a second retaining position in which a second stub shaft designed to be driven at a second output speed is retained in position in the socket, and a third releasing position in which the retaining members are allowed to move to their releasing positions. The sleeve (19, 29) carries first and second PTO shaft speed indicating formations which are respectively designed to be aligned with a speed sensor (32) when the sleeve is in its first and second stub shaft retaining positions respectively.

IPC Classes  ?

• B60K 25/06 - Auxiliary drives from the transmission power take-off

Abstract

A catalytic converter module (16) houses two catalyst units (26,36) which are geometrically arranged in a serial manner. An exhaust gas stream (X) is processed in two parallel sub- streams which follow respective paths: a first path (A) which passes through the first catalyst unit (26) and bypasses the second catalyst unit (36), and a second path (B) which bypasses the first catalyst unit (26) and passes through the second catalyst unit (36). This enables exploitation of a catalyst having an effective area larger than that of the module housing 17 thus allowing the module (16) to be incorporated conveniently into available volumes whilst maintaining a low back pressure.

IPC Classes  ?

• F01N 3/28 - Construction of catalytic reactors
• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion

Abstract

A tractor implement support linkage has a pair of implement attachment links (11), each link being provided at its outer end with an implement attachment means (12) and being pivoted (13) at its inner end on a first arm (14). The first arm is pivoted ( 15) at its inner end on a support frame (16), the outer end (14a) of each first arm being moveable by a lift means (18) for raising and lowering the first arm about its inner pivot (15) on the support frame (16). Each link (11) is also connected (20) with a second arm (21) which is pivoted at its inner end (22) on the support frame (16) and is pivotally connected at its outer end (20) with the link (11). The second arm (21) rotates the link (11) about its connection (13) with the first arm (14) as the first arm is rotated about its pivot (15) on the support frame (16) by the lift means (18) thus increasing the pivotal movement of the implement attachment means (12) relative to the support frame (16) for a given movement of the lift means ( 18).

IPC Classes  ?

• A01B 59/048 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor having pulling or pushing means arranged on the front part of the tractor

Abstract

A telescopic boom (10) suitable for a material handling vehicle is provided. The boom comprises two telescopic sections. One end (12a) of an inner tube element (12) is telescopically slideable in one end (14a) of an outer tube element (14) so that a majority length of the inner tube element can be received therein. An intermediate element (16) is also provided, a first end (16a) of which resides within, and is slideable in, the outer tube element (14). A second end (16b) of the intermediate element is telescopically slideable in the end (12a) of the inner tube element (12) that resides inside the outer tube element. A first stop (20) serves to limit withdrawal of the first end (16a) of the intermediate element from the outer tube element (14), whilst a second stop (18) serves to limit withdrawal of the second end (16b) of the intermediate element from the inner tube element (12). The provision of the intermediate element (16) allows a reduced overlap between the telescopic sections (12,14) thus increased reach.

IPC Classes  ?

• B66C 23/70 - Jibs assembled from separate sections to form jibs of various discrete lengths

Abstract

A shaft shielding assembly (26) comprising first and second telescopic sleeve members (31, 32) is provided. The sleeve members are each disposed around, and shield a portion of, a rotatable shaft (22). Mutually cooperating guide means, such as an array of grooves and ridges (33, 34), are provided on the sleeve members and which forcibly reduce longitudinal overlap therebetween when rotated with respect to one another so as to extend the shielded region of the shaft.

IPC Classes  ?

• A01B 71/08 - Means for protecting against dust or the like, or for cleaning agricultural implements
• F16D 3/84 - Shrouds, e.g. casings, coversSealing means specially adapted therefor
• F16P 1/04 - Screens or hoods rotating with rotary shafts

Abstract

A vehicle has a chassis (11) with front and rear axles (12, 13) suspended from the chassis for vertical and roll movement relative to the chassis. The axles are each mounted on the chassis via an upper pivotal mounting means in the form of an upper pair of arms (12a, 13a) which is pivoted on the chassis for vertical pivoting movement relative thereto and which carry an axle support (15, 16) on which the axle (12, 13) is free to pivot in the roll mode. A second lower pair of pivoting arms (12b, 13b) also connect each axle (12, 13) to the chassis to control fore and aft movement of the axle relative to the chassis. The line of action of the forces (F1-F4) applied to the chassis (11) by the upper arms (12a, 13a) at one end of the chassis are be substantially aligned with the line of action of the forces applied to the chassis by the lower arms (12b, 13b) at the other end of the chassis to reduce and tendency for the chassis to be twisted by these forces. A first damping means (19) acts between the chassis (11) and the upper pivotal mounting means (12a, 13a) to control vertical movement of the axle relative to the chassis, and a second damping means acts between the upper pivotal mounting means (12a, 13 a) and the axle (12,13) to provide independent control of the roll movement of the axle relative to the chassis.

IPC Classes  ?

• B60G 9/02 - Resilient suspensions for a rigid axle or axle housing for two or more wheels the axle or housing being pivotally mounted on the vehicle

Abstract

A vehicle has a chassis (11) and at least one axle (12, 13) suspended from the chassis for vertical and roll movement relative to the chassis. The axle is mounted on the chassis via a first pivotal mounting means in the form of an upper pair of arms (12a, 13a) which is pivoted on the chassis for vertical pivoting movement relative thereto and which carry an axle support (15, 16) on which the axle (12, 13) is free to pivot in the roll mode. A first damping means (19) acts between the chassis (11) and the first pivotal mounting means (12a, 13a) to control vertical movement of the axle relative to the chassis, and a second damping means acts between the first pivotal mounting means (12a, 13a) and the axle (12, 13) to provide independent control of the roll movement of the axle relative to the chassis. A second lower pair of pivoting arms (12b, 13b) also connect the axle (12, 13) to the chassis to control fore and aft movement of the axle relative to the chassis. When both axles are mounted on the chassis using the above upper (12a, 13a) and lower (12b, 13b) pairs of arms the line of action of the forces (F1-F4) applied to the chassis (11) by the upper arms (12a, 13a) at one end of the chassis may be substantially aligned with the line of action of the forces applied to the chassis by the lower arms (12b, 13b) at the other end of the chassis to reduce and tendency for the chassis to be twisted by these forces.

IPC Classes  ?

• B60G 9/02 - Resilient suspensions for a rigid axle or axle housing for two or more wheels the axle or housing being pivotally mounted on the vehicle

Abstract

A tractor (10) comprising a power takeoff stub (20) which is drivingly connected to an engine (12) by a driveline (14) is provided. A power takeoff clutch (16) is provided in the driveline for selectively powering the power takeoff stub. A first hydraulic pump (26) is drivingly connected to the driveline between the engine and the power takeoff clutch, whilst a hydraulic pump/motor (30) is drivingly connected to the driveline between the power takeoff clutch and the power takeoff stub. The pump/motor can operate as a pump driven by the connection to the driveline so as to deliver an additional hydraulic output (B) when required for high capacity implements for example. The PTO clutch (16) can be employed to selectively control operation of the pump/motor. Alternatively, the pump/motor can serve as a motor driven by a hydraulic connection (35) to the first hydraulic pump. In combination with disengagement of the PTO clutch, the pump/motor can provide a hydrostatic drive for the PTO stub.

IPC Classes  ?

• B60K 25/02 - Auxiliary drives directly from an engine shaft

Abstract

A utility vehicle (10) comprising a cab (12) mounted to a frame (14) by cab suspension means (16) is provided. The cab suspension comprises rolling linkage (20) which permits only circumferential movement of the cab around a generally longitudinal axis (24;44), and vertical linkage (22) which permits only radial movement of the cab relative to said axis (24) or radial movement of the axis (44) relative to the frame. The rolling linkage and vertical linkage are connected in series between the cab and the frame thus allowing independent resolution of rolling movement and vertical movement. The cab suspension means further comprises two spring/dampers (28,38; 58,38) arranged to independently control the stiffness and damping within the two degrees of freedom, namely roll and vertical movement.

IPC Classes  ?

• B62D 33/06 - Drivers' cabs

Abstract

An air intake system (20) for a utility vehicle engine (16) is provided. The system comprises an air filter module (21) having a pre-filter (22) upstream of a main filter (24) wherein the pre-filter serves to extract dust from the air stream. The system further comprises a fan module (32) which is dedicated to deliver a scavenging vacuum which sucks said dust through a scavenger vent (28) in the pre-filter. The fan module (34) is secured to the air filter module (21). By providing a dedicated fan for extracting the dust from the system the reliance on the engine exhaust to provide the vacuum is removed. Furthermore, the securing of the fan module to the air filter module reduces the number of components on the vehicle assembly line.

IPC Classes  ?

• B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours

Abstract

Mounting apparatus (10) for mounting a cab (12) to a chassis (14) on a utility vehicle at one of a plurality of mounting points. The mounting apparatus comprise a first member (15) being associated with the cab and a second member (16) being associated with the chassis. The members (15, 16) each have a mutually cooperating major surface which supports a portion of the weight of the cab (12). The weight is supported over a majority of the major surface thus avoiding localized stresses. The members further include engaging projections (25, 16) disposed on their major surfaces which can be engaged to restrict relative movement in a plane substantially parallel to the major surfaces. The members can be attached to the chassis (14) and the cab (12) at an early stage in the assembly, thereby allowing a saving in time and thus assembly costs.

IPC Classes  ?

• B62D 33/06 - Drivers' cabs

Abstract

A front loader (12) is provided and is suitable for attachment to a tractor (10) which has an engine compartment (16) disposed forwardly of a cab (18) and transversely centred on a longitudinal axis. The front loader (12) is detachable from the tractor (10) and comprises a pair of lift arms (36), when in use, each being pivotally mounted relative to the tractor at respective pivot points (38) which are transversely spaced either side of the engine compartment. The lift arms, when lowered, extend generally forwardly and converge in front of the engine compartment to attach to a single, transversely centred, telescopic boom (40) which is disposed in front of the engine compartment (16). By providing a front loader having a telescopic boom wherein the front loader is simply detachable by a quick release mechanism, the versatility of a tractor can be increased in addition to delivering improved productivity.

IPC Classes  ?

• E02F 3/627 - Devices to connect beams or arms to a tractor or similar self-propelled machine
• A01D 87/00 - Loaders for hay or like field crops
• B62D 49/00 - Tractors
• B62D 49/02 - Tractors modified to take lifting devices

Abstract

A control system for an implement (10) mounted on a tractor (11) via a three point linkage (10) and which has one or more depth control wheels (13) which contact the ground and which support at least part of the weight of the implement. The three point linkage has an upper link (17) and two lower links (14, 15), the upper link including an adjusting means such as an hydraulic cylinder (18) to vary its effective length and the lower links being provided with raising means (16) to raise the implement. The control system has a control unit (23) which received signals indicative of the level of slippage of one or more wheels of the tractor and which in response to a wheel slippage level above a first level (X) operates the adjusting means (18) to shorten the effective length of the upper link (17) to transfer some of the weight of the implement (10) onto the tractor to reduce wheel slippage. The control unit (23) also operates the lower link raising means (16) to raise the lower links (14,15) and hence the implement, if the wheel slippage level exceeds a second higher level (Z).

IPC Classes  ?

• A01B 63/112 - Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements to control draught load, i.e. tractive force

Abstract

A front linkage assembly (10) for a tractor is provided. The assembly comprises a pair of lift arms each comprising an intermediate joint (25, 26) which provides a pivotal connection between an inner section (29) and an outer section (21, 22). Each inner section (29) is pivotally attached to a tractor frame. Each outer section can fold relative to the inner section around a substantially vertical axis between a forwardly extending operating position and a transversely extending transport position.

IPC Classes  ?

• A01B 59/06 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors

Abstract

A control system for a vehicle having electronic gearshift is provided. The system (30;60) comprises a multi-ratio transmission (34) arranged to deliver power from an engine (32) to driven wheels (20) of the vehicle (10) at a selected input-to-output ratio. A gearshift lever is connected to a controller. The system is operable in an engine overspeed prevention mode when the engine speed exceeds a predetermined threshold and in which mode a downshift in ratio is prevented. Any downshift command from the driver when in the engine overspeed prevention mode is translated into a braking force being applied to a wheel of the vehicle (10), and/or attached vehicle (12) such as a trailer.

IPC Classes  ?

• B60W 10/10 - Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
• B60W 30/18 - Propelling the vehicle

Abstract

A fuel tank system for a vehicle (1) such as a tractor comprises a first compartment (28) and a second compartment (29) located on a first side of the vehicle. A third compartment (8) is located on a second side of the vehicle opposite the first side and a first pipe (10) is connected between an aperture (12) in the first compartment and an aperture (14) in the third compartment, wherein the first pipe (10) includes a one-way valve (16) which allows fuel to flow from the third compartment (8) to the first compartment (28). A second pipe (20) is connected between an aperture (22) in the second compartment (29) and a junction (25) in the first pipe (10). The junction (25) is intermediate the one-way valve (16) and the third compartment (8) allowing fuel to flow to the third compartment (8) from the second compartment (29). The fuel is extracted from the first compartment (28) and means are provided to allow fuel to overflow from the first compartment (28) to the second compartment (29) when the fuel is above a predetermined level. By providing a T junction (25) in the first pipe (10), only one fuel aperture is required in the third compartment (8).

IPC Classes  ?

• B60K 15/06 - Fuel tanks characterised by fuel reserve systems

Abstract

A filler spout assembly for fitting to an orifice in a wall of a liquid storage tank is provided. The assembly comprises a tube (18) which extends into the tank (10) from the orifice (14). The tube (18) serves to deliver liquid into the tank during a filling process. The lowermost end of the tube has a ball check valve fitted thereto. The valve comprises a ball (22) which closes the end of the tube (18) when in a closed position. The ball (22) falls under gravity into an open position when not held closed by a closure member (26). The assembly further comprises a float (32) connected to a lever (34) which cause the closure member (26) to force the ball into the closed position when the float (32) rises into a raised position.

IPC Classes  ?

• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion

Abstract

A foldaway passenger seat (20) for a utility vehicle (10) is provided. The seat (20) comprises a seat tray (22) which pivots around a single axis (X) between a substantially horizontal seating position and a substantially vertical stowed position. The axis is oriented so that a forward facing edge (22c) of the seat tray in the seating position becomes the lower-most edge in the stowed position and is longitudinally aligned with respect to the forward direction of travel. Advantageously, the seat tray pivots from the seating position to the stowed position in a single fluid movement.

IPC Classes  ?

• B60N 2/30 - Non-dismountable seats storable in a non-use position, e.g. foldable spare seats
• B60N 2/38 - Seats specially adapted for vehiclesArrangement or mounting of seats in vehicles for particular purposes or particular vehicles specially constructed for use on tractors or like off-road vehicles

Abstract

A method of controlling a fan for cooling a condenser in an air conditioning system is provided. A compressor serves to drive a refrigerant around a fluid circuit which includes the condenser. The duty cycle of the compressor is measured over a period of time to determine a utilisation ratio which reflects the demand on the air conditioning system at that time. The fan is driven at a speed which is no lower than a minimum fan speed which is associated with the calculated utilisation ratio and ambient temperature. Therefore, the demand on the system is determined and exploited without any additional pressure sensors.

IPC Classes  ?

• B60H 1/00 - Heating, cooling or ventilating devices

Abstract

A vehicle (10) comprises a hydrogen fuel ceil (12) and a hydrogen storage tank (14). The storage tank includes an intake valve for connecting with an external hydrogen source (26) to Fill the tank(14), A hydrogen supply line (16) is provided for supplying hydrogen to the fuel cell from the storage tank(14). Heat transfer means (14, 22) transfers heat from the storage tank(14) to the fuel cell (12). Heat expelled by the storage tank during filling thereof is captured and transferred to the fuel cell (12).

IPC Classes  ?

• B60W 10/28 - Conjoint control of vehicle sub-units of different type or different function including control of fuel cells
• B60L 11/18 - using power supplied from primary cells, secondary cells, or fuel cells

Abstract

A tractor power take-off drive line having an output shaft (11) with a socket (12) within which a removeable PTO stub shaft (13) is drivingly received. The stub shaft is retained in the socket by radially moveable retaining members (16) housed in the output shaft and moveable between a radially inward retaining position in which the retaining members each projecting into the socket (12) to engage a retaining formation (18) in the stub shaft (13) within the socket and a radially outward releasing position in which the retaining members are free to move radially outwardly relative to the socket to disengage the retaining formation and allow the stub shaft to be removed from the socket. The retaining members (16) are moved between their retaining and releasing positions by an actuating sleeve (19, 29) which is axially slidable on the output shaft (11) by a tractor operator between a first retaining position in which a first stub shaft designed to be driven at a first output speed is retained in position in the socket, a second retaining position in which a second stub shaft designed to be driven at a second output speed is retained in position in the socket, and a third releasing position in which the retaining members are allowed to move to their releasing positions. The sleeve (19, 29) carries first and second PTO shaft speed indicating formations which are respectively designed to be aligned with a speed sensor (32) when the sleeve is in its first and second stub shaft retaining positions respectively.

IPC Classes  ?

• B60K 17/28 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off

Abstract

A tractor cab suspension for suspending a tractor cab (10) from an associated chassis (11) is provided. Each corner of the cab (10) is supported by fluid damper/spring unit (12, 13). The damper/spring unit (12) at each of the two front corners of the cab is connected with the chassis via a link (14) of a fixed length and which extends generally transverse relative to the chassis (11). The link (14) is pivoted at one end (14b) on the chassis and at the other end (14a) on the cab about axes which extend generally longitudinal relative to the chassis. This connection allows generally vertical movement (X) of the cab relative to the chassis but resists transverse movement of the cab relative to the chassis. A roll bar (41) acting between the cab and chassis is provided to control roll of the cab relative to the chassis.

IPC Classes  ?

• B62D 33/06 - Drivers' cabs

Abstract

An air intake system (20) for a utility vehicle engine (16) is provided. The system comprises an air filter module (21) having a pre-filter (22) upstream of a main filter (24) wherein the pre-filter serves to extract dust from the air stream. The system further comprises a fan module (32) which is dedicated to deliver a scavenging vacuum which sucks said dust through a scavenger vent (28) in the pre-filter. The fan module (34) is secured to the air filter module (21). By providing a dedicated fan for extracting the dust from the system the reliance on the engine exhaust to provide the vacuum is removed. Furthermore, the securing of the fan module to the air filter module reduces the number of components on the vehicle assembly line.

IPC Classes  ?

• F02M 35/022 - Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls

Abstract

Mounting apparatus (10) for mounting a cab (12) to a chassis (14) on a utility vehicle at one of a plurality of mounting points. The mounting apparatus comprise a first member (15) being associated with the cab and a second member (16) being associated with the chassis. The members (15, 16) each have a mutually cooperating major surface which supports a portion of the weight of the cab (12). The weight is supported over a majority of the major surface thus avoiding localised stresses. The members further include engagement means (25, 16) disposed on their major surfaces which can be engaged to restrict relative movement in a plane substantially parallel to the major surfaces. The members can be attached to the chassis (14) and the cab (12) at an early stage in the assembly, thereby allowing a saving in time and thus assembly costs.

IPC Classes  ?

• B62D 33/06 - Drivers' cabs

Abstract

A variable speed fan drive (10) particularly suitable for a vehicle having an internal combustion engine is provided. The fan drive comprises an input shaft (11) driven by the output of an engine. The input drives a carrier (12) for planetary gears (13) which each orbit a sun gear (14) in an epicyclic gear arrangement. A fan (16) is coupled to the sun gear. A further gear arrangement (18,19,21), driven by the input shaft, delivers a variable output to input ratio, the output of which is coupled to a housing (17) of the epicyclic gear arrangement which is meshed with the planetary gears. The provision of the epicyclic gear arrangement in combination with the variable ratio allows the fan blade to operate in reverse. Advantageously, this can be exploited to provide a means to clean a radiator grille.

IPC Classes  ?

• F01P 5/04 - Pump-driving arrangements

Abstract

A counterweight assembly (10) for attachment to a front or rear attachment point on a tractor is provided. The assembly comprises a main weight block (11) having an upper face (21) and a lower face (22) which serve to cooperate with respective surfaces of further weight blocks (12, 13, 14, 15), which can be added, in a vertical stacking manner, as required by a user. The further weight blocks are locked in position relative to the main weight block by separate locking means (60, 61). This allows each further weight block to be secured in position one at a time.

IPC Classes  ?

• B62D 49/06 - Tractors adapted for multi-purpose use

Abstract

A counterweight (10) for attachment to a tractor is provided. The counterweight comprises a body (11), and first and second attachment means disposed on respective vertical faces (23, 24) of the body. The first attachment means comprises two arm-hitching points (41, 42) to engage with respective linkage arms on a tractor, and a top-link hitching point (43) to receive a top link connected to said tractor. The second attachment means has a hook-shaped member (30) for engagement with a lip on the forward end of a tractor. Recesses (48) disposed on each of the vertical faces (23, 24), each serve to receive a drawbar of an attached implement.

IPC Classes  ?

• B62D 49/06 - Tractors adapted for multi-purpose use

Abstract

A fuel tank system for a vehicle (1) such as a tractor comprises a first compartment (28) and a second compartment (29) located on a first side of the vehicle. A third compartment (8) is located on a second side of the vehicle opposite the first side and a first pipe (10) is connected between an aperture (12) in the first compartment and an aperture (14) in the third compartment, wherein the first pipe (10) includes a one-way valve (16) which allows fuel to flow from the third compartment (8) to the first compartment (28). A second pipe (20) is connected between an aperture (22) in the second compartment (29) and a junction (25) in the first pipe (10). The junction (25) is intermediate the one-way valve (16) and the third compartment (8) allowing fuel to flow to the third compartment (8) from the second compartment (29). The fuel is extracted from the first compartment (28) and means are provided to allow fuel to overflow from the first compartment (28) to the second compartment (29) when the fuel is above a predetermined level. By providing a T junction (25) in the first pipe (10), only one fuel aperture is required in the third compartment (8).

IPC Classes  ?

• B60K 15/077 - Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation

Abstract

In summary, there is provided a front axle mounting assembly (100) which is suitable for a tractor or a construction vehicle for example. The assembly comprises a steerable front axle (130), which is typically the front axle on a tractor, and a pair of support arms (120) which extend forwardly from the main body of the vehicle. The arms are pivotally mounted to the body of the vehicle, for example, at the front of the chassis, at transversely spaced mounting points (121). The other ends of the arms (120) are pivotally attached to, and maintained at a fixed spacing, by a crosslink member (124). The axle (130) is mounted to the crosslink member (124) so as to be parallel thereto when viewed from above. By mounting the axle (130) on two support arms (120) instead of one, the effective radius of pivot of the axle is significantly increased, thereby allowing the axle to move sideways to a greater extent for a given angular displacement.

IPC Classes  ?

• B60G 9/00 - Resilient suspensions for a rigid axle or axle housing for two or more wheels
• B62D 9/00 - Steering deflectable wheels not otherwise provided for

Abstract

A control system for an implement (10) mounted on a tractor (11) via a three point linkage (10) and which has one or more depth control wheels (13) which contact the ground and which support at least part of the weight of the implement. The three point linkage has an upper link (17) and two lower links ( 14, 15), the upper link including an adjusting means such as an hydraulic cylinder (18) to vary its effective length and the lower links being provided with raising means (16) to raise the implement. The control system has a control unit (23) which received signals indicative of the level of slippage of one or more wheels of the tractor and which in response to a wheel slippage level above a first level (X) operates the adjusting means (18) to shorten the effective length of the upper link (17) to transfer some of the weight of the implement (10) onto the tractor to reduce wheel slippage. The control unit (23) also operates the lower link raising means (16) to raise the lower links (14,15) and hence the implement, if the wheel slippage level exceeds a second higher level (Z).

IPC Classes  ?

• A01B 63/11 - Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means for controlling weight transfer between implements and tractor wheels
• A01B 63/114 - Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements to achieve a constant working depth
• A01B 63/118 - Mounting implements on power-lift linkages
• A01B 63/14 - Lifting or adjusting devices or arrangements for agricultural machines or implements for implements drawn by animals or tractors

Abstract

A hydraulic supply system (10) for a tractor is provided comprising a hydraulic pump (P) and a support plate (13) mounted on the exterior of a tractor chassis ( 14). One or more fluid flow control valves (17a,17b, 17c,27,28,29,31) or other consumers are mounted on the support plate (13) which are fed with fluid from the pump (P) via passages (12a, 12c) in the support plate. The separate support plate reduces the number of hydraulic pipes required thereby improving space availability and assembly costs.

IPC Classes  ?

• B60R 16/08 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided forArrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for fluid

Abstract

A door latch mechanism (10) comprises a pin (11) having an elongate axis, and releasable jaw means (12) comprising a pair of jaw elements (18) which engage the pin therebetween to latch a door (16) in a closed position to a door frame (14). The pin is mounted on the door or the door frame with biasing means, such as a pair of springs, so as to allow the pin to move substantially linearly in a direction perpendicular to the elongate axis of the pin and substantially parallel to the plane of the door when in the closed position. The movement of the pin (11) allowed by the biasing means caters for any vertical displacement of the door caused by worn hinges for example without any forced distortion of the door. The invention is of particular benefit to doors having no frame and which are susceptible to flexing and come with the associated risk of structural failure.

IPC Classes  ?

• E05B 15/02 - Striking-platesKeepersBolt staplesEscutcheons
• E05B 65/32 - with the bolt turning about an axis

Abstract

A multi-ratio tractor transmission system including a series arrangement of a speed changing gearbox and a range changing gearbox. The system is selectively operable in a field working automatic mode and a road working automatic mode, wherein the transmission can only operate automatically within its speed change gearbox when the system is operating in the field working automatic mode.

IPC Classes  ?

• B60K 6/54 - Transmission for changing ratio

Abstract

An attachment system for attaching an implement to a tractor using two different size category attachment links/pins (25, 26) is provided. The system comprises two spaced attachment plates (18, 19) designed to alternatively receive therebetween an end of an attachment link (25, 26) of each of the' two size categories. One attachment plate (19) has a pair of spaced holes (23) of a smaller category size and the other attachment plate (18) has a pair of spaced holes (22) of a larger category size. The centre lines of the two pairs of holes (22, 23) are aligned. Pin means are provided comprising a pair of spaced pins (25, 26), the pins being interconnected at one end (28, 31) with their centre lines spaced apart by the same distance as the pairs of holes (22, 23) in the attachment plates (18, 19). The interconnected ends of the pins have a diameter for use in the pair of holes of the larger size category (22) and the free ends of the pins (30, 33) have a diameter for use in the smaller size category holes (23). Furthermore, one pin (25) has an intermediate portion (32) between the connected end (31) and the free end (33) which is of the larger size category. The other pin (26) has an intermediate portion (29) which is of the smaller size category. The pin means are alternatively insertable through the larger size category holes (22) in the attachment plates (18, 19) with the larger or smaller size category intermediate portion in either position between the attachment plates so that the connecting links of both size categories sizes can be secured.between the attachment plates (18, 19) in either position. The system allows implements to be attached to a tractor using an upper link of at least two different size categories for example.

IPC Classes  ?

• A01B 59/06 - Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors

Abstract

A draw pin hitch has a lower jaw, an upper jaw positioned above the lower jaw, and a draw pin receivable generally vertically in apertures in the upper and lower jaws for coupling elements to the hitch between the jaws. The hitch has a pin holding means which is moveable between a “pin raised” position in which the pin is supported by the pin holding means in the aperture of the upper jaw but does not project between the jaws, and a “pin lowered” position in which the holding means allows the pin to extend through both apertures between the jaws. The pin holding means at least partially encircles at least one of the jaws and is moveable between the “pin raised” and “pin lowered” positions by contact of an implement to be coupled to the hitch with a portion of the holding means. When in the “pin raised” position the holding means at least partially extends across the lower end of the aperture in the upper jaw.

IPC Classes  ?

• B60D 1/02 - Bolt or shackle-type couplings

Abstract

A vehicle steer by wire system which has a steering wheel for setting a desired turn angle of a vehicle wheel, a steering wheel turn sensor for sensing the desired turn angle, a hydraulic steering actuator for turning the wheel, a wheel turn sensor for sensing the current wheel turn angle and a control unit for receiving the desired turn angle and current wheel turn angle signals. An electronically controlled steering actuator control valve means is provided for supplying pressurized fluid to the steering actuator via a steering circuit in response to signals from the control unit to turn the wheel to the desired turn angle. A hydraulic motor connected with the steering wheel is provided to provide steering feedback to the steering wheel via a feedback circuit which includes an electrically controlled hydraulic feedback control valve means which directs fluid to and from the hydraulic motor in response to the signals from the control unit to generate the steering feedback. The steering system has a fail-safe mode in which fluid pressure from the hydraulic motor provides steering of the wheel in the event of a failure to electronically actuate the steering actuator control valve means.

IPC Classes  ?

• B62D 5/06 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle