Drive pump arrangement for working vehicle

Details Drive pump arrangement for working vehicle Drive pump arrangement for working vehicle

1981-12-28

1983-11-15

Peters, Jr., Joseph F.

Motor vehicles

Steering by driving

Independently operable drive motors

74491, 180 658, 180315, B62D 1104

Patent

active

044150504

ABSTRACT:
A working vehicle comprising two pumps for driving hydraulic motors provided for opposite running devices individually and a valve mechanism for bringing the vehicle into a low-speed state wherein a fluid is supplied from the pumps to the motors individually, or alternatively into a high-speed state wherein the combined fluid from the pumps is supplied to the motors in series. The vehicle is provided with an operating assembly for preventing the vehicle from turning at a high speed even when the vehicle is inadvertently so operated by the driver in the high-speed state.

REFERENCES:
patent: 3850258 (1974-11-01), Bauer
patent: 4154314 (1979-05-01), Tsuji et al.
patent: 4261431 (1981-04-01), Hawbaker
patent: 4355693 (1982-10-01), Hirooka et al.

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