Integrally molded composites of silicone rubber

Details Integrally molded composites of silicone rubber Integrally molded composites of silicone rubber

1987-07-09

1989-04-04

Luebke, Renee S.

Electricity: circuit makers and breakers

Solid contact

Membrane type

200 5A, 264247, 264261, H01H 1370, B20C 1722

Patent

active

048188298

ABSTRACT:
Novel composite products formed by bonding a flowable elastomer, such as silicone rubber, to a transparent or translucent silicone rubber preform are described. These products have utility in the field of electromechanical devices such as an illuminated switch or key or as a transparent rubber window permitting view of an underlying display device. The bond between the preformed elastomer and the flowable elastomeric material is improved by post-curing the preform for about 4 hours at about 200.degree. C. prior to contact of the flowable material with the preform. Methods of fabrication of the novel composites are also disclosed.

REFERENCES:
patent: 4446192 (1984-05-01), Dehlen
patent: 4464326 (1984-08-01), Nishihira
patent: 4634818 (1987-01-01), Hayes-Parkhurst et al.
Johnson, Jr., D. O., Keyboard and Wiping Contact Assembly, IBM Tech. Disclosure, vol. 13, No. 7, p. 1962-Dec. 1970.

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