Annular seals

Details Annular seals Annular seals

1977-08-01

1979-01-16

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 12, 277 31, 277207R, 251172, 251315, 277 1, F16K 2500, F16K 506, F16J 1532

Patent

active

041345959

ABSTRACT:
A method of sealing an annular gap and a sealing arrangement suitable for plug valves, shafts and pistons. An annular sealing member is toroidally rotated through a substantial angle prior to or during insertion in the gap to be sealed, and is arranged so as to be free to react toroidally against the sealing surfaces bounding the gap for positive sealing engagement therewith. In this way the sealing member forms a resilient seal for the gap without being subject to significant radial stresses. An important application of the invention is to seat seals for ball plug valves.

REFERENCES:
patent: 2297161 (1942-09-01), Newton
patent: 3002525 (1961-10-01), Grove
patent: 3006599 (1961-10-01), Eckert
patent: 3269693 (1966-08-01), Gulick
patent: 3331581 (1967-07-01), O'Connor
patent: 3497176 (1970-02-01), Priese
patent: 3556471 (1971-01-01), Paul
patent: 3587155 (1971-06-01), Packard

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