Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1987-06-08
1989-07-25
Ward, Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277215, 285230, 285231, 285345, F16J 1510
Patent
active
048506036
ABSTRACT:
An annular gasket of elastic resilient material for sealing the annular gap between a spigot end and a socket end of two pipes, said spigot end and socket having substantially coaxial sealing surfaces. The gasket comprises a main sealing body which, during the assembly of the pipes, non-slidingly engages a first pipe, and a thin-walled further body which defines a closed cavity containing a lubricant. During assembly of the elements, said further body is entrained by the second pipe and rolls between this pipe and the main sealing body. The inner surfaces of the hollow further body are pressed into contact with each other and slide relative to each other. The flattened further body increases the thickness of the gasket by twice the wall thickness of the further body.
REFERENCES:
patent: 3386745 (1968-06-01), Hein
patent: 3498623 (1970-03-01), Rowe
patent: 3510140 (1970-05-01), Hermann
patent: 3520541 (1970-07-01), Rohani
patent: 3575430 (1971-04-01), Alpine
patent: 3980311 (1976-09-01), Ditcher
patent: 4170365 (1979-10-01), Haaland
patent: 4299399 (1981-11-01), Haaland
patent: 4398732 (1983-08-01), Christiansen
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