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SINGLE RECESSED BASE LIGHT

  • US 3,753,217 A
  • Filed: 08/31/1971
  • Issued: 08/14/1973
  • Est. Priority Date: 08/31/1971
  • Status: Expired due to Term
First Claim
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1. In combination with a staircase and an adjacent upright wall, an electric light for a housing, the housing comprising a reentrant inverted base for at least one stair including a tread and a riser:

  • a. The inverted base being of thin, stiff, flexible metal and providing;

    1. a concave back section, 2. a lower lip section extending forwardly of said back section, 3. a row of vertically depending prongs at the edge of said lower lip section, 4. an upper lip section extending forwardly of said back section, 5. a row of horizontal rearwardly directed prongs at the edge of said upper lip section, 6. a closure plate at each end of said concave back section secured thereto with each having a vertical forward edge, b. an electric light bulb socket mounted rearwardly of said back section with its bulb receiving portion extending slightly forwardly of said back section through an opening therein, c. there being an opening in said wall at the base thereof adjacent to an end of said one stair tread to receive said inverted base, and d. said rows of upper and lower prongs respectively securing said inverted base to said wall and stair tread, whereby an electric light for the socket is recessed and will illuminate said stair tread.

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