Oil pressure clutch mechanism for an automatic transmission

Details Oil pressure clutch mechanism for an automatic transmission Oil pressure clutch mechanism for an automatic transmission

1988-11-17

1990-05-15

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Plural clutch-assemblage

192 85AA, 192 871, 192 8711, F16D 2104, F16D 2510

Patent

active

049249827

ABSTRACT:
An oil pressure clutch mechanism of an automatic transmission is comprised of at least two clutches interposed coaxially in a front drum. An oil circuit for controlling the clutches is formed in the front drum in relation to an oil circuit in an oil pump cover. The oil circuit includes circular oil grooves formed between an outer face of the oil pump cover and an inner face of the drum. A circular drain groove is disposed axially between the circular oil grooves to receive oil leaked therefrom. A drain passage is formed in the front drum for conducting leaked oil from the drain groove to a location external of the front drum. The outlet end of the drain groove is spaced farther from the axis than is the inlet end thereof, whereby leaked oil is discharged through the oil drain passage under the influence of centrifugal force.

REFERENCES:
patent: 3301142 (1967-01-01), Cenko
patent: 4711138 (1987-12-01), Miura
patent: 4741422 (1988-05-01), Fuehrer
patent: 4836052 (1989-06-01), Iwanaga et al.

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