Invention Grant
US3862382A Keyboards switch assembly with multilayer pattern contact means 失效
键盘开关组合与多层图案联系方式

Keyboards switch assembly with multilayer pattern contact means
Abstract:
Keyboards for use in calculators, control equipment and the like, and which include a circuit board supporting electrical pathways, an insulator separator having openings registerable with portions of the pathways, a non-conductive elastomeric layer supporting a plurality of non-selfsupporting flexible conductive members or pathways and contactors thereon, said flexible conductive circuit contactors registerable with said openings whereby pressure applied to said elastomeric layer causes one or more of said contactors to extend through one or more openings to make electrical contact with portions of one or more circuit pathways supported by said board.
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