Push button switch and method for manufacturing same

Details Push button switch and method for manufacturing same Push button switch and method for manufacturing same

1991-06-28

1993-12-14

Recla, Henry J.

Electricity: circuit makers and breakers

Solid contact

Compressible elastomer

200512, 200514, H01H 102

Patent

active

052705072

ABSTRACT:
A push button switch and methods for manufacturing the same result in increased manufacturing efficiency and increased design freedom. The push button switch includes a key top, a dome section and a leg section which are integrally formed from a silicone rubber material. The key top includes a colored section formed by penetrating the coloring dye of a dye impregnated ink below the upper surface of the key top. The push button switches are formed into a rubber cover configuration by charging a mold for forming a plurality of the push button switches with a silicone rubber material. The dye impregnated ink is then applied onto the surface of each of the key tops by either a wet printing process or a sublimation transfer technique, and is subjected to a heat treatment which causes the dye to penetrate into each of the key tops.

REFERENCES:
patent: 2404073 (1946-07-01), Karfiol et al.
patent: 2571962 (1951-10-01), Smith et al.
patent: 2722038 (1955-11-01), Freund
patent: 2874416 (1959-02-01), Burnett
patent: 3860388 (1975-01-01), Haigh
patent: 4800243 (1989-01-01), Osawa et al.
patent: 4980221 (1990-12-01), Kobayashi et al.

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