Buffer seal

Details Buffer seal Buffer seal

1998-03-11

2000-09-05

Knight, Anthony

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

277552, 277560, 277584, F16J 1532

Patent

active

061131083

ABSTRACT:
A buffer seal is provided and adapted to absorb high pressures. The buffer seal includes a body portion and a sealing portion with a backup ring disposed in a groove adjacent to the sealing portion. The sealing portion has a first surface that is perpendicular to a reference axis of the buffer seal and a second surface that forms an acute angle with the reference axis, preferably less than thirty degrees. The first surface of the sealing portion extends axially from the body portion to form a shoulder. The shoulder functions during use to provide a surface that pressurized fluid can act against to urge the sealing portion against a shaft.

REFERENCES:
patent: 4284280 (1981-08-01), Bertram et al.
patent: 4350347 (1982-09-01), Heinrich
patent: 4921258 (1990-05-01), Fournier et al.
patent: 4944498 (1990-07-01), Kortgen et al.
patent: 5088745 (1992-02-01), Peppiatt et al.
patent: 5139274 (1992-08-01), Oseman
patent: 5169160 (1992-12-01), Gaskill et al.

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