Oil pressure control system for an automatic transmission system

Details Oil pressure control system for an automatic transmission system Oil pressure control system for an automatic transmission system

1975-10-07

1977-09-27

Coan, James F.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74865, B60K 4108

Patent

active

040503321

ABSTRACT:
An oil pressure control system for an automatic transmission system which includes a fluid torque converter, a transmission gear and friction engaging means adapted to be selectively supplied with line pressure for establishing a selected transmission engagement in said transmission gear, said oil pressure control system including a speed shift timing valve which controls the supply of oil pressure to said friction engaging means by the use of a gradually decelerating engaging process and gradually accelerating disengaging process of said friction engaging means.

REFERENCES:
patent: 3091980 (1963-06-01), Black
patent: 3710652 (1973-01-01), Miyazaki
patent: 3823621 (1974-07-01), Kubo et al.
patent: 3831465 (1974-08-01), Murakami
patent: 3859873 (1975-01-01), Miyauchi et al.
patent: 3943799 (1976-03-01), Sakai et al.
patent: 3951011 (1976-04-01), Lemon

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