Keyboard assembly and keyboard switch

Details Keyboard assembly and keyboard switch Keyboard assembly and keyboard switch

H - Electricity

01

H

340/187, 306/305

H01H 13/52 (2006.01) B41J 5/12 (2006.01) G08B 1/08 (2006.01) H01H 13/702 (2006.01)

Patent

CA 1131733

ABSTRACT A keyboard assembly and a keyboard switch are presented in which the keyboard switch is a layer of flexible insulating material with circuit configurations thereon and an array of flat topped protrusions which serve as key switches to effect a snap action contact with tactile feedback between a conduc- tive element on the key switch and another conductive element. Preferably, the areas between the protrusions on the insula- ting layer are securely clamped relative to a backing or stiffening board, and the protruding key switches are operated by hinged key actuators which make off center contact with the protrusion.

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