Oil sealing structure for a hydraulic device for an automatic tr

Details Oil sealing structure for a hydraulic device for an automatic tr Oil sealing structure for a hydraulic device for an automatic tr

1989-01-04

1991-07-09

Lorence, Richard

192 clutches and power-stop control

Clutches

Plural clutch-assemblage

192 85AA, 192 8711, 192 8715, 277 3, 277 27, F16D 2104, F16D 2510

Patent

active

050296850

ABSTRACT:
Seal rings are set in oil grooves which are situated at both sides of two oil passages communicating two hydraulic actuators which operate oppositely. First and second seal rings oil-tightly seal between the first oil passage and sleeve, while third and fourth seal rings oil-tightly seal between the second oil passage and the sleeve. Accordingly even if oil flows oppositely in each of two oil passages due to the opposing motions of the two contiguous hydraulic actuators, not oil leakage occurs. Furthermore, a draining groove is situated between the oil grooves in which the second and third seal rings are installed.

REFERENCES:
patent: 2764269 (1956-09-01), Schjolin
patent: 3105582 (1963-10-01), Ziabicki
patent: 3379293 (1968-04-01), Hill
patent: 3844393 (1974-10-01), Zaiser
patent: 4454786 (1984-06-01), Stockton
patent: 4924982 (1990-05-01), Harada et al.

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