Vehicle drive system

Details Vehicle drive system Vehicle drive system

1979-05-08

1981-11-24

Pekar, John A.

Motor vehicles

Steering by driving

Independently operable drive motors

60484, B62D 1104

Patent

active

043018815

ABSTRACT:
A vehicle drive system providing abrupt turning capability under control of local or remote steering commands. The vehicle consists of a platform supported by two drive wheels and at least one castor wheel. An engine powers a hydraulic pump which drives two independently controlled hydraulic motors transmitting power to the drive wheels. Hydraulic fluid flows from the pump to the motor and is controlled through a network of valves to provide torque limiting capabilities to the drive wheels which prevents slippage with the ground. Free wheeling capability is also selectively applied during dynamic turning maneuvers to permit minimal energy changes and resulting in a short turning radius.

REFERENCES:
patent: Re25379 (1963-05-01), Swanson
patent: 3416311 (1968-12-01), Yoshizawa
patent: 3807521 (1974-04-01), Sargent
patent: 3876021 (1975-04-01), Baumgartner
patent: 4022022 (1977-05-01), Marietta

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