Valve base roughening process

Details Valve base roughening process Valve base roughening process

1977-11-23

1978-09-19

Hoag, Willard E.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156245, 156306, 264248, 264293, 264296, 264236, 264347, B29H 1500, B29C 2700

Patent

active

041151739

ABSTRACT:
The thorough bonding required between the base or flange of a molded rubber sleeve for a valve, and a tire tube of rubber or the like, is realized by simulating the roughened effect normally produced through abrasion. Such effect is achieved by specially configuring the surface of the base in the molding process; that is to say, the surface normally resulting from abrasion is equivalently produced by forming the contacting surface of the critical mold portion (such as a plunger or the like) in a cross-hatched or knurled pattern, whereby a desired cross-hatched pattern is formed in the particular surface of the base.

REFERENCES:
patent: 1938816 (1933-12-01), Eger
patent: 2065033 (1936-12-01), Stevens
patent: 2120346 (1938-06-01), Becker
patent: 2230879 (1941-02-01), Bronson
patent: 2253759 (1941-08-01), Burkley
patent: 4010052 (1977-03-01), Edwards

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