Hydraulic double clutch of the wet type with pressure control va

Details Hydraulic double clutch of the wet type with pressure control va Hydraulic double clutch of the wet type with pressure control va

1975-03-13

1976-06-22

Wyche, Benjamin W.

192 clutches and power-stop control

Clutches

Operators

192 8715, 192 8718, 192109F, 192113B, 74 1584, 137530, F16D 2510

Patent

active

039645851

ABSTRACT:
Hydraulic double clutch comprising a tractor-driving clutch unit and a power takeoff clutch unit accommodated in a clutch housing serving also as an oil tank. Hydraulic pumps disposed in the housing have gears respectively meshing with a gear on the drive disk assembly of the double clutch to force the working oil into the clutch units through individual oil passages and to push the pistons of the units. Each of the oil passages is provided with a poppet valve at an intermediate portion thereof. The poppet valves are opened or closed to disengage or engage the clutch units independently of each other for interruption or transmission of the torque of engine. Each of the valves is automatically opened when the pressure on the piston builds up to excess and is therefore serviceable also as a pressure control valve. The valve is operable to bring the clutch unit into substantially semi-engaged state.

REFERENCES:
patent: 2505450 (1950-04-01), Wemp
patent: 2868341 (1959-01-01), Snoy

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