Winch system having hydraulic transmission including a safety ci

Details Winch system having hydraulic transmission including a safety ci Winch system having hydraulic transmission including a safety ci

1985-07-17

1988-03-01

Kyle, Deborah L.

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

60905, F16H 3944

Patent

active

047277181

ABSTRACT:
A winch system comprising a cable drum coupled with a reversible hydromotor and a reversible hydropump arranged with the hydromotor in a closed circuit by means of two communication conduits, in which a safety circuit connecting the communication conduits with one another at the occurrence of pressure shocks therein is arranged and provided with one controllable relief pressure valve, whose inlet and outlet are connected with each one of the communication conduits through non-return valves allowing supply to and, respectively, drainage from the relief pressure valve.

REFERENCES:
patent: 2398265 (1946-04-01), Tyler
patent: 2902826 (1959-09-01), Littell et al.
patent: 2905190 (1959-09-01), Oyster
patent: 3175354 (1965-03-01), Firth et al.
patent: 3303647 (1967-02-01), Futamata
patent: 3395893 (1968-08-01), Kumpf
patent: 3733813 (1973-05-01), Gordon
patent: 3817033 (1974-06-01), Appel et al.
patent: 3864915 (1975-02-01), Metailler
patent: 4194365 (1980-03-01), Stoufflet et al.
patent: 4232792 (1980-11-01), Shields

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