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Back lit keypad

  • US 5,510,782 A
  • Filed: 08/03/1992
  • Issued: 04/23/1996
  • Est. Priority Date: 08/03/1992
  • Status: Expired due to Fees
First Claim
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1. A method for forming a keypad characterized by:

  • forming a keypad shell primarily of elastomeric opaque first material which includes integrally molding at least a first key wherein said first key has a first key top that has a first opening therein and that has a lower face with said first key further having first key sides extending primarily vertically from said first key top and forming a first cavity within said first key sides and said first key top, and with said first key further having a first pad extending primarily horizontally from a location near the bottom of said first key sides, so said first key top, first key sides, and first pad are integral with each other, with said first key top further having an upper face; and

    installing a quantity of light transmitting second material in said first cavity with said quantity of second material having a top face lying facewise against the lower face of said first key top to support it;

    said step of forming a keypad shell including forming said keypad shell so it is devoid of said opaque first material at selected regions of said first key top to leave said first opening therein, and with said first opening representing a character.

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