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Method for manufacturing a contact key switch

  • US 6,375,879 B1
  • Filed: 08/07/2000
  • Issued: 04/23/2002
  • Est. Priority Date: 02/20/1998
  • Status: Expired due to Fees
First Claim
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1. A method for manufacture of a contact key switch, the method comprising the steps of:

  • providing a first layer of electroconductive woven fabric or electroconductive nonwoven fabric;

    providing a second layer of electroconductive woven fabric or electroconductive nonwoven fabric;

    penetrating an unvulcanized rubber into an opening portion of said first and second electroconductive woven fabric or electroconductive nonwoven fabric and hardening said rubber to form a layered body;

    punching the layered body in a given shape to make a layered contact portion and to form it as a part of a key pad made of a rubber elastic body so as to make the electroconductive woven fabric or the electroconductive nonwoven fabric as a surface.

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