Cover seals with latching locking features

Details Cover seals with latching locking features Cover seals with latching locking features

2007-05-01

2007-05-01

Leslie, Michael (Department: 3745)

Expansible chamber devices

Piston

With spring means for biasing side wall portion radially

C277S437000, C277S452000, C277S467000

Reexamination Certificate

active

11058864

ABSTRACT:
Seal apparatus includes a cover seal having a body and an extending cylindrical sleeve with the sleeve including a radial internal groove. A piston is provided having a circumferential groove and a biasing element is disposed between the internal and circumferential groove. Surfaces, disposed in the internal and circumferential grooves, orient the biasing element in order to effect sealing between the housing and the sleeve and an axial force to provide latching or locking between the seal and the piston.

REFERENCES:
patent: 3820739 (1974-06-01), Graf
patent: 4678210 (1987-07-01), Balsells
patent: 4804290 (1989-02-01), Balsells
patent: 5161806 (1992-11-01), Balsells
patent: 2003/0157846 (2003-08-01), Poon et al.

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