Anti-extrusion packing member

Details Anti-extrusion packing member Anti-extrusion packing member

1981-05-01

1983-04-12

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277164, 277235R, F16J 1518

Patent

active

043795587

ABSTRACT:
A seal or packing for use in dynamic or static applications subject to stretching, twisting or deforming forces, includes a body member forming the sealing and packing surfaces, together with an anti-extrusion reinforcing element incorporated in the body member. The anti-extrusion element is comprised of a helical round wire spring axially centered within a covering of an overlapping flat wire helical spring. The anti-extrusion elements are bounded or integrally joined to the body member at or near those locations thereon where extruding forces are likely to act.

REFERENCES:
patent: 2957717 (1960-10-01), Bram
patent: 3820799 (1974-06-01), Abbes et al.
patent: 4138144 (1979-02-01), Pierce
patent: 4190258 (1980-02-01), Arai et al.
patent: 4310163 (1982-01-01), Pippert

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