Hydraulic winch assembly using a vehicle steering pump

Details Hydraulic winch assembly using a vehicle steering pump Hydraulic winch assembly using a vehicle steering pump

1997-11-11

1998-08-18

Walsh, Donald P.

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

254323, 254377, 60420, B66D 108

Patent

active

057949204

ABSTRACT:
A hydraulic motor is configured to drive a cable spool. A first fluid diverting valve is hydraulically connected between a discharge of a vehicle steering pump and the hydraulic motor. The first fluid diverting valve is configured to divert full fluid flow to a vehicle power steering box, and to divert full fluid flow to the hydraulic motor. A second fluid diverting valve is hydraulically connected between the first fluid diverting valve and an inlet of the vehicle steering pump. The second fluid diverting valve is configured to divert full fluid flow from the first fluid diverting valve to the hydraulic motor and to divert full fluid flow from the first fluid diverting valve to the inlet of the vehicle steering pump, bypassing the hydraulic motor and permitting fluid flow between the inlet of the hydraulic motor and the outlet of the hydraulic motor through the second fluid diverting valve so that manual operation of the winch is permitted. A shutoff valve is hydraulically connected between the second fluid diverting valve and the hydraulic motor to stop fluid flow through the hydraulic motor, thereby providing braking of the hydraulic motor.

REFERENCES:
patent: 2349284 (1944-05-01), Kinzelman
patent: 3035414 (1962-05-01), Smith
patent: 3261590 (1966-07-01), Bech et al.
patent: 3788605 (1974-01-01), Johnson
patent: 3817033 (1974-06-01), Appel et al.
patent: 4331323 (1982-05-01), Sekimori et al.
patent: 4658850 (1987-04-01), Uchino
patent: 5474278 (1995-12-01), Cleveland
patent: 5522582 (1996-06-01), Dilks

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