Weatherstrip and composition of matter therefor
AssigneeThe Goodyear Tire & Rubber Company
InventorsGordon E. Etter, William Hoverman, Jr.
Life of this patent
Estimating the term…
Abstract
A flange mountable weatherstrip includes a coated flange cover and a hollow sealing member. The coating and the sealing member are preferably formed in a single extrusion operation of a single low durometer elastomeric sponge material. The preferred physical properties of the elastomeric material and its formulation are described. The flange cover is adaptable to frictionally engage a supporting edge flange. The sealing member is of an asymmetric cross-sectional configuration resembling an upper case letter D.
Claims12
A flange mountable weatherstrip comprising:
- (a) a flange cover adaptable to frictionally engage a supporting edge flange, said cover comprising an elongated carrier capable of being formed into a U-shaped cross-sectional configuration defined by a central web portion and first and second spaced leg portions, said cover having a coating of elastomeric material;
- (b) a hollow sealing member joined to said flange cover and integral with said coating, said sealing member being cantilevered from said cover, said sealing member being of asymmetric cross-sectional configuration resembling an upper case letter D and including a generally C-shaped portion extending from the outer surface of the first leg portion of the flange cover adjacent the web portion thereof and presenting its convex side to the web portion and a straight portion extending from the outer surface of said first leg portion, said straight portion being joined at its end distal said one leg portion to said C-shaped portion, said straight portion forming an acute angle with the plane of the carrier in said one leg portion when said plane is extended outwardly from the adjacent end of said cover;
- (c) said sealing member and said coating being formed of a single low durometer elastomeric sponge material.
A closed cell sponge material comprising:
- from about 100 to 70 parts by weight of poly(1,3-cyclopentylenevinylene) elastomer and 0 to 30 parts by weight of polychloroprene elastomer, and per each hundred weight parts of total elastomer, from about 40 to 100 parts of carbon black, a sulfur bearing reagent in an amount sufficient to cross-link the elastomer and a thermodegradable blowing agent in an amount sufficient to reduce the calculated density of the compounded material during vulcanization.
Dependencies are inferred from the claim text.