Land vehicles – Wheeled – Running gear
Patent
1985-06-21
1987-10-27
Love, John J.
Land vehicles
Wheeled
Running gear
180 648, 180 2407, B60G 1126
Patent
active
047028432
ABSTRACT:
An adverse terrain vehicle is provided which includes a system for controlling a number of vehicular functions. The vehicle includes at least two variable displacement hydraulic motors, each for driving at least one wheel member on one side of the vehicle independently of the wheel members on the opposing side thereof. At least two variable displacement hydraulic pumps are mounted on the vehicle for supplying pressurized hydraulic fluid to the hydraulic motor on one side of the vehicle independently of the hydraulic motor on the opposing side thereof. The hydraulic pumps are driven by an engine. A sensor detects a decrease in the power output of the vehicle below that selected by the vehicle operator. Overload protection circuitry is responsive to the overload sensor and adjusts the displacement of the hydraulic motors and pumps to increase the power output capacity of the vehicle. Braking control circuitry coordinates with braking of the vehicle steering to effect turning of the vehicle while braking. Control circuitry also adjusts the vertical positions of the wheels on opposing sides of the vehicle during a turn to facilitate skid-steering. Control circuitry also varies the displacement of the hydraulic motors to prevent their operation at excessive speeds and to facilitate acceleration of the vehicle at slow speeds. A tire inflation system is utilized to control the pressure within the tires of the vehicle.
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Franklin Carl M.
Mankey Harry S.
Osborn Ronnie M.
Oswald Norman D.
Wilhelm James M.
Love John J.
O'Neil Michael A.
Standard Manufacturing Co., Inc.
Weaver Ross
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