Piston stroke controller in a torque transmitting assembly

Details Piston stroke controller in a torque transmitting assembly Piston stroke controller in a torque transmitting assembly

1997-06-11

1998-12-01

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Axially engaging

192111A, 188 718, 188196V, 92 137, F16D 250638, F16D 6558

Patent

active

058425497

ABSTRACT:
Power transmission torque transmitting assemblies, such as clutches and brakes, have an axially movable piston which is hydraulically actuated to engage and enforce frictional contact between a plurality of friction discs. Upon piston retraction during disengagement, a stroke adjustment mechanism establishes the retraction distance of the piston and thereby the free-running clearance in the torque transmitter. The stroke adjustment mechanism has a helical gear movable axially with the piston during engagement and disengagement. During engagement, the piston is free to rotate as required by a retainer plate to accommodate fall engagement with the torque transmitting assembly. During disengagement, a one-way assembly prevents rotation of the gear relative to a spring retainer plate and limits axial movement of the piston relative to the retainer plate to establish the disengaged position of the piston and the proper free-running clearance in the torque transmitting assembly.

REFERENCES:
patent: 3820635 (1974-06-01), Hurt
patent: 4355708 (1982-10-01), Papagni
patent: 4378863 (1983-04-01), Baum
patent: 4454933 (1984-06-01), Hunnicutt et al.
patent: 4792021 (1988-12-01), Fukazawa et al.
patent: 4798100 (1989-01-01), Baumgarten
patent: 5749451 (1998-05-01), Grochowski

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