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US 2004/0000763 A1Published application
Molded gasket
AssigneeFederal-Mogul World Wide, Inc.
InventorsErich Jacob Gernand, Thomas J. Buster
Life of this patent
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Abstract
An injection molded gasket has a longitudinally extending gasket body with laterally opposite sides and a plurality of longitudinally spaced retention nubs projecting laterally outwardly of the body from the opposite sides. At least one longitudinally extending ingate rib is formed on the gasket body and bridges at least two adjacent retention nubs. The ingate rib has a trimmed edge that extends outwardly of the body no further than that of the retention nubs located adjacent the ingate rib.
Claims12
An injection molded gasket, comprising:
- a longitudinally extending body having laterally opposite side surfaces;
- a plurality of retaining nubs spaced longitudinally from one another and projecting laterally outwardly from said opposite side surfaces of said body;
- at least one longitudinally extending ingate rib projecting laterally outwardly from at least one of said opposite side surfaces to a free trimmed edge and bridging at least two adjacent ones of said retaining nubs defining bridged retaining nubs and non-bridged retaining nubs;
- and
- said free trimmed edge of said ingate rib projecting from said body no further than that of said non-bridged retaining nubs.
2 more elements
A method of injection molding a gasket, comprising:
- injecting hot, flowable organic polymeric gasket material into a cavity of a mold through an ingate to form a longitudinally extending body of the gasket having laterally opposite side surfaces and a plurality of retaining nubs spaced longitudinally from one other and projecting laterally outwardly from the opposite side surfaces of the body;
- forming at least one longitudinally extending ingate rib of gasket material projecting laterally outwardly from at least one of the opposite side surfaces on the body and bridging at least two adjacent retaining nubs defining bridged retaining nubs and non-bridged retaining nubs, and
- allowing the gasket material to cool, opening and removing the gasket from the mold, and trimming the ingate rib to form a free trimmed edge of the ingate rib that projects from the body no further than the non-bridged retaining nubs.
Dependencies are inferred from the claim text.