Vacuum sealing gasket

Details Vacuum sealing gasket Vacuum sealing gasket

1988-12-12

1990-02-20

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

220 21A, 277205, H01J 2987

Patent

active

049020234

ABSTRACT:
A resilient, non-porous gasket for a substantially rectangular vacuum chamber includes an outer lip for positioning and holding the gasket on the support frame of the vacuum chamber. An improvement for enabling the gasket to creep during said gasket deformation and for enhancing the sealing of the sealing edge of an object being processed against a sealing surface of the gasket in the presence of curvature of the sealing edge wherein the corners of the outer lip of the gasket are removed.

REFERENCES:
patent: 3912104 (1975-10-01), Schwartz
patent: 4054913 (1977-10-01), Lerner
patent: 4076143 (1978-02-01), Jenne, Jr. et al.
patent: 4210935 (1980-07-01), Mitchell et al.
patent: 4812708 (1989-03-01), Change

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