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Keyboard

  • US 4,527,030 A
  • Filed: 11/22/1983
  • Issued: 07/02/1985
  • Est. Priority Date: 11/06/1980
  • Status: Expired due to Fees
First Claim
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1. A keyboard assembly comprising a number of movable keys, each of said keys being movably retained in juxtaposition to unitary molded snap-action elements sealed to a metallic support member and to a pair of conductors mounted on flexible substrates in close juxtaposition to one another and aligned with said snap-action elements, such that upon depression of one of said keys, the corresponding snap-action element urges one of the corresponding pair of conductors into contact with the other, said assembly comprising a spacer sheet interposed between said flexible substrates and having holes punched therethrough to permit one of said pair of conductors to contact the other, wherein a hole is formed in said metallic support member in the region under each of said keys, the periphery of each of said keys being open to the atmosphere, whereby air is not confined under said unitary snap-action elements sealed to said metallic plate.

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