192 clutches and power-stop control – Clutches – Axially engaging
Patent
1987-04-03
1989-01-17
Braun, Leslie A.
192 clutches and power-stop control
Clutches
Axially engaging
192 85AA, 192111A, F16D 1375, F16D 25063
Patent
active
047982721
ABSTRACT:
A hydraulically operated friction clutch, having a driving and a driven rotary member frictionally engageable with each other, a movable member axially movable for frictional engagement of the driving and driven rotary members, and an actuator piston axially slidable by a pressure in a pressure chamber, for moving the movable member. The actuator piston has a control passage which communicates with the pressure chamber and a discharge passage. The clutch further has a shut-off valve disposed in operative association with the actuator piston and the movable member. The shut-off valve includes a closure member which is movable relative to the actuator piston and which has a first position for closing the control passage, and a second position for opening the control passage. The closure member is placed in the second position when the actuator piston has been moved to a predetermined ready-to-operate position which is a predetermined first distance away from the movable member. The discharge passage is opened and closed according to signals from a controller.
REFERENCES:
patent: 3421608 (1969-01-01), Van Gorder
patent: 4325471 (1982-04-01), Schuster
Murata Kiyohito
Ushijima Fumihiro
Braun Leslie A.
Lorence Richard M.
Toyota Jidosha & Kabushiki Kaisha
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