Membrane keyboard blockout apparatus

Details Membrane keyboard blockout apparatus Membrane keyboard blockout apparatus

H - Electricity

03

M

340/175

H03M 11/00 (2006.01) H01H 13/702 (2006.01)

Patent

CA 1306035

Patent Case No. I1104361-U.S. APPLICATION OF ROBERT SCHMITZ ABSTRACT A membrane keyboard blockout apparatus for a keyboard having an array of a plurality of flexible key members in respective ones of a plurality of apertures arranged in a grid forming the keyboard includes a cover plate dimensioned to span a flexible key member and to provide a tight fit within an aperture defining a key member. The cover plate has a thickness providing a substantially inflexible configuration in response to normal operator manipulation and a plurality of corner support pedestals contacting respective corners of the flexible key member when the cover plate is inserted in a key member aperture. Thus, the pedestals provide a support between the cover plate and the flexible key member at the edges of the key member to preclude, in combination with the inflexible structural characteristic of the cover, an actuation of the flexible key member under the cover.

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