Pressure-balanced packing

Details Pressure-balanced packing Pressure-balanced packing

1979-05-21

1981-12-08

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277166, F16J 1532

Patent

active

043044140

ABSTRACT:
A packing ring comprises a stiffening ring having an angular profile and an angularly profiled sealing element fastened thereon composed of an elastomeric material and having the configuration of a two-armed lever. The sealing element comprises a membrane portion forming one arm, a sealing lip on the other arm and an annular portion fastened by the membrane to the annular portion of the stiffening ring. The radial portion of the stiffening ring and the membrane portion define a cavity therebetween and a fulcrum axis is provided centrally of the two arms to pivot the sealing lip into contact with the surface to be sealed.

REFERENCES:
patent: 2542141 (1951-02-01), Horton
patent: 3561770 (1971-02-01), Corsi et al.
patent: 3727923 (1973-04-01), McEwen
patent: 3848881 (1974-11-01), Ginn
patent: 3854732 (1974-12-01), Franz et al.
patent: 4172599 (1979-10-01), Forch

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