Seal with embedded garter spring

Details Seal with embedded garter spring Seal with embedded garter spring

1996-03-08

1998-03-24

DePumpo, Daniel G.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277164, F16J 1532

Patent

active

057304440

ABSTRACT:
A fluid seal including a casing unit and an elastomeric lip body portion. Frustoconical air and oil side surfaces of the lip body meet at an inner diameter portion to form a fluid seal band contacting an associated shaft in use. A continuous, circumferentially extending garter spring is embedded in the seal lip body. An axially inner surface of the lip body is defined in part by plural spaced apart ribs and the remainder is defined by pockets having portions lying closely adjacent the radially and axially innermost portions of the garter spring. In the free state of said seal, the garter spring exerts a radially inwardly directed preload force so as to resist radial expansion of said seal. The spring also resists dimensional shrinkage of the seal band and the remainder of the seal body.

REFERENCES:
patent: 2361348 (1944-10-01), Dickson et al.
patent: 2581817 (1952-01-01), Simmer
patent: 2949635 (1960-08-01), Chiero
patent: 3246369 (1966-04-01), Rhoads et al.
patent: 3561770 (1971-02-01), Corsi et al.
patent: 3666852 (1972-05-01), Burke
patent: 4350347 (1982-09-01), Heinrich
patent: 4381908 (1983-05-01), Roth
patent: 4519567 (1985-05-01), Rautenberg
patent: 5182032 (1993-01-01), Dickie et al.
patent: 5213749 (1993-05-01), Huss et al.

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