Hydraulically-actuated starting clutch assembly with balanced pi

192 clutches and power-stop control – Clutches – Operators

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Details

192 7028, 192 85AA, F16D 25063, F16D 1350

Patent

active

047097957

ABSTRACT:
A hydraulically-actuated starting clutch, and more particularly a starting clutch for a continuously variable transmission which is located at the output of the transmission to couple the vehicle wheels to the engine upon a signal from a throttle-induced system oil pressure. The clutch includes a housing connected to the drive shaft through a hub and forming a pressure chamber behind an annular piston, a Belleville spring connecting the driving shaft hub and a pressure plate together for simultaneous rotation; the piston urging the pressure plate against a clutch plate and an end plate secured in the housing. The piston includes a plurality of axial projections thereon contacting the surface of the pressure plate opposite to the clutch plate, and the clutch plate is operatively connected to a driven concentric sleeve shaft to drive the vehicle wheels. An annular balance cap secured in the housing between the piston and pressure plate has openings closely receiving the piston projections and provides a centrifugally shrouded zone for cooling oil to react against the centrifugal force acting on the hydraulic fluid urging the piston against the pressure plate.

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patent: 4520912 (1985-06-01), Ferris et al.

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