Hydraulic servo unit for vehicular power transmission system

Details Hydraulic servo unit for vehicular power transmission system Hydraulic servo unit for vehicular power transmission system

1996-12-20

1999-06-01

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Operators

192 7028, F16D 2508

Patent

active

059080965

ABSTRACT:
A hydraulic servo unit for a vehicular power transmission system having a helical gear, including a clutch for connecting predetermined rotary elements to each other and a hydraulic servo for applying the clutch, the hydraulic servo including a cylinder, a piston fitted in the cylinder, a push member abutting against the piston through a bearing for transmitting the push force of the piston to the clutch, and a return spring for the piston, one of the rotary elements including a reaction member opposed to the push member for transmitting the push force of the piston to a case, and the cylinder is a stationary cylinder formed in the case. Further, the return spring is arranged between the push member and the reaction member and is loaded to apply a load higher than the thrust force of the helical gear, as acting upon the reaction member.

REFERENCES:
patent: 3038575 (1962-06-01), Hansen
patent: 3251247 (1966-05-01), Lamburn
patent: 3684069 (1972-08-01), Pray
patent: 4811628 (1989-03-01), Winkam et al.
patent: 5234090 (1993-08-01), Haka
patent: 5735376 (1998-04-01), Moroto et al.

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