Annular preloaded seal for a sliding piston in cylindrical tank

Details Annular preloaded seal for a sliding piston in cylindrical tank Annular preloaded seal for a sliding piston in cylindrical tank

1983-08-15

1991-08-27

Tudor, Harold J.

Expansible chamber devices

Piston

Plural integral radially extending resilient metallic...

92194, 60 3948, 277103, F16J 106

Patent

active

050423657

ABSTRACT:
A peripheral sliding seal for sealing the liquid propellant in a cylindrical tank 10 containing a piston 14 for positive expulsion of the liquid propellant. The seal comprises a peripheral inward flange member 16 around the piston periphery adjacent the inner wall of the tank, an annular pressure ring 18 bonded to the flange member 16 and forming several recesses therewith, one recess containing a compliant sealing ring 20 and the other containing a shear seal 32 bonded both to the flange member 16 and to the entrance head 12 of the tank. The bonds prevent internal and external leakage of the liquid fuel during storage. Pressurization of the piston 14 permits the piston 14 to move and breaks the shear seal 32. The compliant-ring seal slides with the piston 14, the compliant ring 20 being pressed against the inner wall of the tank by resilient fingers 34 of the pressure ring 18 to form a sliding seal.

REFERENCES:
patent: 1224999 (1917-05-01), Barthel
patent: 2430492 (1947-11-01), Carlson
patent: 2992052 (1961-07-01), De John
patent: 3545343 (1970-12-01), Orbeck
patent: 3680310 (1972-08-01), Arvidson
patent: 4074527 (1978-02-01), Sadler

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