Winch clutch pressure reducing valve and lubrication system

Details Winch clutch pressure reducing valve and lubrication system Winch clutch pressure reducing valve and lubrication system

1975-05-05

1977-06-14

Wyche, Benjamin W.

192 clutches and power-stop control

Elements

Lubricating, insulating, or cooling

192109F, 192 12C, F16D 1372

Patent

active

040291898

ABSTRACT:
A control for a hydraulically operable clutch of a winch applied to a grapple-skidder includes a pressure-reducing valve which is selectively operable to permit the clutch to slip in those instances when a cable connected between a drum of the winch and a load or grapple structure is being wound in and the load or grapple structure comes into engagement with an immovable object such as a tree or framework at the rear of the grapple-skidder. The clutch is of a disc type adapted for operating in a lubricating fluid and the pressure-reducing valve is operative to effect an increase in the flow of lubricating fluid to the clutch when the valve is operated to permit the clutch to slip.

REFERENCES:
patent: 2869701 (1959-01-01), Yokel
patent: 3064779 (1962-11-01), Christenson
patent: 3128861 (1964-04-01), Trondsen
patent: 3351169 (1967-11-01), McIndoe
patent: 3391767 (1968-07-01), Stow
patent: 3823801 (1974-07-01), Arnold
patent: 3872957 (1975-03-01), Maurer et al.

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