Anti-extrusion lip seal

Details Anti-extrusion lip seal Anti-extrusion lip seal

1994-12-15

1996-03-19

DePumpo, Daniel G.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277227, 277230, 87 7, F16J 1500, D04C 100

Patent

active

054998263

ABSTRACT:
An anti-extrusion lip seal device is disclosed for use that includes a flexible sealing lip portion supported by an annular braided anti-extrusion element. The braided anti-extrusion element is less resilient than the sealing lip portion to resist extrusion forces acting on the seal device. The braided anti-extrusion element includes fibers that are interconnected both laterally and radially. It is further impregnated with elastomeric or resinous material. Resiliency of the braided element may be adjusted during manufacture by varying the tightness of the braid as well as by variation of the resiliency of the impregnated material.

REFERENCES:
patent: 3719366 (1973-03-01), Pippert
patent: 4219204 (1980-08-01), Pippert
patent: 4298562 (1981-11-01), Latty
patent: 4310163 (1982-01-01), Pippert
patent: 5028056 (1991-07-01), Bemis et al.

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