Helical cut seal

Details Helical cut seal Helical cut seal

1990-01-19

1992-02-11

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277216, 277DIG6, F16J 912, F16J 900, F16J 928

Patent

active

050870572

ABSTRACT:
A ring seal has a radial cut, so that the ring seal may be transversely installed over a coaxial element. The cut extends radially and circumferentially to provide cut surfaces that overlap in intimate contact and maintain intimate contact to inhibit leakage between the cut surfaces when the ring seal radially expands. The cut surfaces are helicoid, each characterized by a radial generatrix that is constantly perpendicular to the axis of the seal. A method and apparatus are disclosed for making a ring seal having helical cut surfaces.

REFERENCES:
patent: 164444 (1875-06-01), Grilley
patent: 1702294 (1929-02-01), DuBois
patent: 3455565 (1969-07-01), Jepsen
patent: 3588125 (1971-06-01), Mastromatteo
patent: 3655208 (1972-04-01), Walker

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