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WO/1997/045313A1 |
An electrically powered vehicle having two primary ground engaging wheels (5) operatively connected to a driving motor (10) by an automatic transmission (50) and to a steering motor (20) by a shiftable bevel gear (7b) which permits oppos...
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WO/1997/040996A1 |
A road maintenance tracklaying vehicle (1) has an internal combustion engine (2) which drives by means of a gear (3, 13, 14) the tumbler (4) of each track (5), and secondary drives (6) for accessory units (7, 8, 9) such as rotary snow pl...
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WO/1997/010114A1 |
A coupling device (7) interposed between right and left wheels (5L, 5R) of a vehicle. The device can perform a start assisting control, a turning control for improving the turning performance by positively generating a differential rotat...
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WO/1997/002975A1 |
A differential driving system capable of operating as a steering system for skid steer vehicles having two differentials, a steering differential (11) dedicated to steering and a propulsion differential (1) having its planet carrier (2) ...
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WO/1997/000190A1 |
A cross-drive steering transmission for steering a tracklaying vehicle is characterised in that at least two fixed mechanical reduction gears allow for at least two turning radii, in that steering radius automatic switching means are pro...
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WO/1996/018056A1 |
A hydraulic pilot valve comprises a valve body, first, second and third pressure reducing valves formed in the valve body and each having an inlet port, an outlet port and a spool for providing communication and shut-off between the inle...
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WO/1996/013395A1 |
A ball joint assembly comprising a base member (60), a spherical member (20), a ring of at least three rolling members (40) mounted around the spherical member (30) such that a point on a rolling surface of each of the least three rollin...
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WO/1996/005996A1 |
A vehicle for underground mine shafts comprising a body (11) having a cabin (21) for passengers, a pair of tracks (12) on either side of the cabin (21), a drive means (35) for driving the tracks (12), steering means (239, 287) for steeri...
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WO/1996/004163A1 |
A system and process for operating a track trencher excavation machine includes multiple mode propulsion and steering controls that perform a plurality of functions depending on a selection of one of a plurality of operational modes. A c...
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WO/1995/035220A1 |
A running control circuit for a hydraulically driven running device comprising a hydraulic pump, parallel left- and right-hand directional control valves provided along a discharge path of the hydraulic pump, sets of first left- and righ...
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WO/1995/034460A1 |
A motor vehicle (1) including modular units for operating two rear wheels (10) of the vehicle, the motive unit (3) includes a rigid link (100) which is pivotally connected between the rear wheel and the motive unit, and the motive unit i...
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WO/1995/026277A1 |
A travelling hydraulic device characterized in that left and right direction change-over valves are provided for supplying pressure oil to left and right travelling hydraulic motors, that a spool hole having a pump port, an actuator port...
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WO/1995/018736A1 |
A hydro-mechanical steering differential for providing differential steering of the left and right hand tracks of a tractor is disclosed. The steering differential is powered by a mechanical input and a hydraulic input, and includes left...
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WO/1995/015272A1 |
The invention relates to a cross-drive steering transmission for a tracked vehicle, in particular a protection device for such a steering transmission (7). Steering transmissions for tracked vehicles have the essential disadvantage that ...
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WO/1995/011816A1 |
An articulated tracked vehicle (10) for agricultural harvesting which reduces damage to fields and can be driven on roads at reasonable speeds. The vehicle has elements (12, 14), linked by an articulating joint (230) which permits turnin...
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WO/1994/008837A1 |
A tracked vehicle (10) propelled by a pair of direct current electric motors (35) operating through a power train to a pair of endless tracks (11). Each power train operates a track drive sprocket (14) through a state of the art torque h...
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WO/1994/003343A1 |
A linear advancement compensating apparatus for a hydraulic circuit for hydraulically driven vehicles, comprising left and right travelling valves (24, 25) connected at the inlet sides thereof to a hydraulic pressure source (20) via left...
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WO/1994/002346A1 |
The invention concerns a control device for a vehicle propulsion drive comprising two hydrostatic transmissions (3, 4) with adjustable reduction ratios, each transmission comprising a hydraulic pump (12, 13) and a hydraulic motor (14, 15...
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WO/1993/023278A1 |
Steering device for a tracked vehicle having at least one endless track. The track is provided with a number of grip shoes (2) comprising an upper part (3) which is fixedly connected with the track, and a sole part (4) which is displacea...
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WO/1993/019975A1 |
When using a self-supporting wheel tractor body to build a tracklaying tractor, it is necessary to supplement the body of the tractor with a massive frame for spring mounting the running wheels. This frame has the disadvantage of conside...
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WO/1993/018956A1 |
The invention relates to a transmission and steering apparatus for a tracked vehicule, which tracked vehicle comprises a driving track unit which drives the tracked vehicle, and which transmission and steering apparatus comprises a trans...
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WO/1993/008067A1 |
The invention provides controlled omnidirectional relative movement between a device and a selected surface in contact therewith. The device is preferably a vehicle (10) having a first and second track (14A, 14B) mounted thereto, which t...
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WO/1993/005974A1 |
A skid steer loader (1) has its engine (7) and drive transmission assembly (8) supported in a pod that is removable through a rear access door (15). The loader side wheels (28, 30) (29, 31) are coupled on each side to a common sprocket (...
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WO/1993/005995A1 |
The invention relates to a drive for a vehicle with running gears rolling on a base, especially caterpillar tracks (8a, 8b). The drive is provided via a motor (1), a gearbox (3) driven thereby and summarizing gear (6) to drive the vehicl...
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WO/1993/005996A1 |
A track-type vehicle (10) having first and second endless track assemblies (20, 22) and first and second steerable wheels (16, 18) includes a weight management apparatus (29) including a measuring assembly (36) for measuring the angle of...
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WO/1992/013746A1 |
The present invention relates to a steering control system by pilot pressure, in which responsiveness is good, controlling force is light and a control input of a control lever is always constant independent of the wear of a brake and a ...
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WO/1992/012889A1 |
This invention relates to a skid steer loader capable of spin turning. There are provided a rotatably controlled type steering wheel, an accelerator pedal and a travelling lever for determining a foreward movement, a neutral position and...
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WO/1992/008278A1 |
A propulsion system for using a pair of electric induction motors (23a, 23b) to power a pair of vehicle drive wheels. The motors are driven by pulses of electric current from a common dc bus (22). The inductance of stator windings cause ...
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WO/1992/005063A1 |
A fluid control circuit (10) for controlling the disengagement of first and second drive mechanisms (12, 14) and the engagement of first and second brake mechanisms (16, 18) for a track-type vehicle has a fluid pump (50) and first and se...
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WO/1992/003327A1 |
A device for controlling a hydraulic steering clutch and brake to be used for a caterpillar ?R¿ vehicle such as a bulldozer, which is simple in structure and drivable even with a monolever. For satisfying the purpose, one steering lever...
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WO/1991/019117A1 |
A device for driving a pair of output shafts (19, 20) from a common rotary input shaft (2) and for permitting differential rotation of the output shafts relative, to each other. The device comprises means (3, 4) for coupling the input sh...
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WO/1991/010585A1 |
Differential reduction drives on opposite sides of a vehicle are steer driven by a pair of worm gears (110) meshed with worm wheels (111) inputting steering torque into each reduction drive. The worm gears are rotationally interconnected...
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WO/1991/006903A1 |
A vehicular steering and transmission shifting control mechanism (10) includes a transversally rockable control handle (8) and a steering actuator element (35) connected at the bottom thereof to selectively depress either a left or right...
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WO/1991/004426A1 |
A differential gear device for the transverse-shaft driving unit of the crawler vehicle, which is a planetary differential gear for steering structurally compact and economically excellent. For attaining the objects, the device is provid...
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WO/1991/000208A1 |
A control system (34) is provided in a propulsion system (10) to automatically apply the right or left brake (28/30) on the respective drive unit (24/26) with respect to operator input conditions. In this arrangement, if the operator sel...
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WO/1990/014262A1 |
A vehicular steering mechanism of overly complex construction is known which displaces a left turn control valve or a right turn control valve through separated cams in response to the rotation of a steering wheel. The subject steering m...
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WO/1990/012714A2 |
In order to reduce the number of component parts required in a master cylinder for a hydraulic brake and steering brake system consisting of two master cylinders interconnected by a compensating line, the compensating line (60) is connec...
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WO/1990/012225A1 |
This invention relates to a two-path hydromechanical transmission mounted on the caterpillar vehicle or the like and to a method of controlling the same, in which excellent operability and straight advancement performance can be obtained...
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WO/1989/011051A1 |
A system for dividing rotary power to two or more output shafts (68, 168) includes planetary cluster cages (48, 52) that are associated with the output shafts and which are interconnected by a hydraulic circuit (66, 166). In instances wh...
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WO/1989/006224A1 |
A control mechanism (10) for operating a vehicle (14) has a housing assembly (56) mounted for swinging movement about an upstanding axis (30), and a brake actuating member (160) is mounted on the housing assembly for swinging movement ab...
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WO/1989/006395A1 |
In order to more easily control movement of a vehicle (14) such as a tractor, an operator's left hand can twist a directional actuating member (108) or a juxtaposed speed actuating member (142) about an outstanding axis (48). These actua...
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WO/1989/003335A1 |
A superimposed steering gear (3) for tracklaying vehicles superimposes the steering power required to steer the vehicle in curves on the vehicle drive system by means of summarizing differentials, and comprises a summarized hydrostatic-m...
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WO/1989/001893A1 |
The invention relates to a method and a support arrangement to steer a roller vehicle by a roller mat, which vehicle has an essentially rigid body part (1) supporting the frame and the power engine (2) with transmission means (3) thereof...
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WO/1989/001420A1 |
A skid steer loader (10) includes an engine compartment (22) and a heat exchanger compartment (24) located behind the operator's compartment (40). A fan shroud (240) mounted between the heat exchanger compartment (24) and the engine comp...
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WO/1988/006990A1 |
Braking system for full-track vehicles, with a gear mechanism (3) and a differential steering mechanism (8), both disposed transversally to the longitudinal axis (F) of the vehicle, and two summing mechanisms (5) disposed in the vicinity...
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WO/1988/004253A1 |
An infinitely variable driving and steering gear for tracklaying vehicles has a hydrostatic-mechanical branching gear as driving gear and an infinitely-variable hydrostatic-mechanical overlaying steering gear. The components: hydrostatic...
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WO/1988/002715A1 |
Clutch-brake steering systems are known to operate on track vehicles which are highly reliable and cost effective, but lacked the fine degree of controllability found in the more expensive differential steering. An electronically control...
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WO/1988/000548A1 |
A mechanical-over-hydraulic steering apparatus (49) capable of providing automotive-type steering includes a steering wheel driven input control member (130), right and left turn control valves (224, 276), and first and second actuators ...
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WO/1987/005574A1 |
A transmission system for a skid-steered vehicle in which at least one hydraulic pump (9) is driven by at least one engine (1), these in turn driving a pair of hydraulic motors one connected to each of the vehicles tracks or wheels throu...
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WO/1987/004986A1 |
A driving and steering system (1) for a vehicle having at least two propelling tracks or wheels driven by output shafts (5) from within a housing (26) containing respective planetary gear sets (30), each planetary gear set including a su...
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