Metal working – Method of mechanical manufacture – Prime mover or fluid pump making
Patent
1992-09-01
1993-07-27
Gorski, Joseph M.
Metal working
Method of mechanical manufacture
Prime mover or fluid pump making
29888076, 29 883, 264139, 264250, 264268, B32B 3106, B31B 3100
Patent
active
052301494
ABSTRACT:
A method of manufacturing a ring-shaped hydraulic seal (10) produces a cylindrical sealing surface (12) having portions (24) formed of a plastic material and portions (26) formed of an elastomeric material. The method includes the steps of forming a plastic ring (30) and molding an elastomeric material into a cavity (50) in the plastic ring (30). The cylindrical sealing surface (12) is formed by grinding away the material of the ring (30) to expose a surface (26) of the elastomeric material which is contained in the cavity (50) in the ring (30). The plastic portions (24) of the cylindrical sealing surface (12) are defined by the ground surface (82) of the plastic ring (30). The elastomeric portions (26) of the cylindrical sealing surface (12) are defined by the exposed surfaces (26) of the elastomeric material.
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Gorski Joseph M.
Nguyen Khan V.
TRW Inc.
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