Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1976-06-07
1977-04-26
Peters, Jr., Joseph F.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
180 82A, B60K 2800
Patent
active
040196020
ABSTRACT:
A fluid drive arrangement of a vehicle is shiftable to forward and reverse drive conditions when actuating fluid from an auxiliary source of pressurized fluid is directed to a hydraulic actuator device of the fluid drive arrangement and is shifted to a neutral position automatically when the flow of actuating fluid to the hydraulic actuator device is blocked. A solenoid operated valve device is disposed between the auxiliary source of fluid and the hydraulic actuator device and has an energized fluid supplying position for directing actuating fluid to the hydraulic actuator device and a de-energized fluid blocking position for blocking pressurized fluid from the hydraulic actuator device. An electrical switch is disposed within a conductor line connecting a source of electrical energy to the solenoid operated valve device and has a closed position for completing an electrical circuit to energize the solenoid operated valve device and an open position for de-energizing the solenoid operated valve device. The electrical switch is disposed beneath an operator's seat of the vehicle in a position to be engaged by the seat and actuated to its closed position when the seat is moved to its lowered occupied position and is actuated to its open position when the seat is moved to its raised unoccupied position.
REFERENCES:
patent: 2931454 (1960-04-01), Schuster
patent: 3265150 (1966-08-01), Westman
patent: 3332522 (1967-07-01), Dence
patent: 3334488 (1967-08-01), Lauck
patent: 3360305 (1967-12-01), Ryskamp
patent: 3376703 (1968-04-01), Buczynski
patent: 3507350 (1970-04-01), Boyajian
patent: 3700062 (1972-10-01), Garnett
Caterpillar Tractor Co.
Grant John W.
Peters Jr. Joseph F.
Siemens Terrance L.
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