Umc Industries, Inc.

Leon P Mace

Calvin L Chumley

William W Hendrickson

A slide selector switch device comprising a membrane switch having a base layer, an intermediate layer and a cover layer of electrical insulation material, the intermediate layer having a plurality of sets of openings arranged in straight lines, the base and cover layers each having an electrically conductive switching and circuit pattern on its inside face including contact areas at the openings and circuits each adapted to be made on electrical contact of the contact areas at a respective opening, a slide guide overlying the cover layer, and slides, one for each of said sets of openings, each slidable along a respective line to a plurality of different positions for depressing the portion of the cover layer at a respective opening to make the respective circuit.

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St. Louis, MO, United States of America

Leon P Mace