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Stylus actuated electrical devices

  • US 3,894,183 A
  • Filed: 07/22/1974
  • Issued: 07/08/1975
  • Est. Priority Date: 06/30/1971
  • Status: Expired due to Term
First Claim
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1. An electrical switcHing device comprising a supporting member carrying at least one electrically conductive element, and a flexible sheet member carrying at least one electrically conductive element placeable on top of the supporting member with the two conductive elements facing each other, at least one of said members including a coating of insulating material to insulate the conductive elements from each other when the flexible sheet member is placed on top of the supporting member, said insulating coating being of a soft, pressure-flowable material which parts under the pressure of a stylus upon the application thereof to the flexible sheet member to thereby bring the two conductive elements into contact with each other, said insulating coating also being tacky to hold the two conductive elements in contact with each other upon removing the pressure of the stylus, the flexible sheet member being separable from the supporting member to interrupt said contact.

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