Oil scavenge check valve apparatus

Details Oil scavenge check valve apparatus Oil scavenge check valve apparatus

1989-07-10

1990-01-30

Nilson, Robert G.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 15, 277 27, 277 70, 277 93SD, F16J 1516

Patent

active

048968900

ABSTRACT:
An oil seal, scavenge check valve apparatus includes a seal housing having external and oil-flooded sides, a shaft opening and a fluid opening. A shaft is rotatably and sealingly mounted in the shaft opening. A member is sealingly attached to the external side and spaced therefrom for defining a scavenge cavity adjacent the fluid opening. A first end of the fluid opening is in fluid communication with the scavenge cavity and a second end of the fluid opening is in fluid communication with the oil-flooded side. A flexible seal is normally closed to seal the second end of the fluid opening. The seal is responsive to pressure differences between the external and oil-flooded sides for moving between a normally closed and an open position. A backing plate is spaced from the oil-flooded side to limit movement of the flexible seal.

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patent: 4128248 (1978-12-01), Kabelitz
patent: 4152092 (1979-05-01), Swearigen
patent: 4153141 (1979-05-01), Methlie
patent: 4245844 (1981-01-01), Pohl et al.
patent: 4300772 (1981-11-01), Nissel
patent: 4475735 (1984-10-01), Smuda et al.
patent: 4475736 (1984-10-01), Lesiecki
patent: 4496032 (1985-01-01), Sommer
patent: 4574926 (1986-03-01), Bubak
patent: 4657495 (1987-04-01), Sakamaki et al.
patent: 4749283 (1988-06-01), Yokomatsu et al.

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