Seal for a joint or juncture – Seal between relatively movable parts – Circumferential contact seal for other than piston
Patent
1997-01-07
1998-08-11
DePumpo, Daniel G.
Seal for a joint or juncture
Seal between relatively movable parts
Circumferential contact seal for other than piston
277322, 277537, 277556, F16J 1518
Patent
active
057916578
ABSTRACT:
A wellhead seal assembly for sealing between first and second pipe members comprises an annular elastomeric body having, in cross-section, a generally rectangular shape comprising a first flat radial surface, a second flat radial surface, an inner circumferential surface and an outer circumferential surface; said inner circumferential surface comprises a generally convex portion that extends from an imaginary plane connecting the inner circumferential edge of each of said first radial surface and said second radial surface; said seal assembly further comprises at least one annular, non-metallic spring member in said elastomeric body positioned generally tangentially to the intersection of either of said radial surfaces with said inner circumferential surface.
REFERENCES:
patent: 4235427 (1980-11-01), Bialobrzeski
patent: 4379558 (1983-04-01), Pippert
patent: 4795468 (1989-01-01), Hodorek et al.
patent: 4881329 (1989-11-01), Crowley
patent: 5158271 (1992-10-01), Hein
patent: 5163692 (1992-11-01), Schofield et al.
Cain David E.
Cunningham Christopher E.
French Steven M.
Posluszny Andrew C.
Schoen Rudolf R.
DePumpo Daniel G.
FMC Corporation
Query, Jr. Henry C.
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