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Composite top membrane for flat panel switch arrays

  • US 4,258,096 A
  • Filed: 11/09/1978
  • Issued: 03/24/1981
  • Est. Priority Date: 11/09/1978
  • Status: Expired due to Term
First Claim
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1. A composite top membrane for use in flat panel membrane-type switch arrays, comprising:

  • (a) a first sheet of flexible plastic material having a substantial restorative property such that when an applied force is removed therefrom, said sheet will return to its unstressed condition, said sheet having a pattern of metallization on the undersurface thereof;

    (b) a continuous layer of plastic foam material of a predetermined generally constant thickness and density having a pressure sensitive adhesive coated on both sides thereof; and

    (c) a deformable, decorative plastic face plate sheet having graphic material on at least one surface thereof, said face plate being adhesively affixed to a first surface of said layer of plastic foam material and said first sheet being adhesively affixed to the second surface of said layer of plastic foam material with said undersurface exposed.

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