High pressure lip seal

Details High pressure lip seal High pressure lip seal

1980-02-19

1982-01-12

Pollard, Steven M.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277117, 220 3, F01B 1900, B65D 5304

Patent

active

043101623

ABSTRACT:
A pressure seal for sealing a vessel against passage of fluid from a high essure containing cavity is disclosed to include a barrier means slidably disposed within the cavity having a seal body and a seal piston reciprocably received within the seal body. The seal piston and seal body cooperate to define a fluid containing chamber for accommodating compressible fluid to assist in the control of forces for generating sealing. The seal means include a primary seal for relatively low pressures and a metal-to-metal seal wherein the outer surface of at least a portion of the seal body is deflected outwardly against the inner surface of the cavity by displacement of the seal piston inwardly of the seal body such as to initially provide a secondary seal against passage of fluid outwardly of the cavity and thereafter providing sealing which increases in intensity in response to continuous build-up of pressure within the cavity.

REFERENCES:
patent: 2008321 (1935-07-01), Cornish
patent: 2065870 (1936-12-01), Parr
patent: 2252488 (1941-08-01), Bierend
patent: 3220594 (1965-11-01), Ortheil et al.
patent: 3537357 (1970-11-01), Packer
patent: 4239124 (1980-12-01), Inouye

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