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Lighting device

  • US 4,042,290 A
  • Filed: 03/24/1976
  • Issued: 08/16/1977
  • Est. Priority Date: 04/14/1975
  • Status: Expired due to Term
First Claim
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1. Lighting device comprising an elongated support having a generally U-shaped cross-section, said support including electrically conductive surfaces extending respectively along the inside of the legs of said support, a pair of lamp holders made from an electrically insulating material displaceably arranged with respect to each other in said support, co-engaging releaseable means on said support and lamp holders for retaining said lamp holders in said support, an incandescent lamp of the type comprising a tubular section and an electrically conductive cap at each end thereof having a cylindrical section, each said cylindrical section being received in a corresponding one of said pair of lamp holders, and a contact spring on each said lamp holder connecting one cylindrical section of an end cap on said lamp with a corresponding one of said conductive surfaces extending along the inside of said support.

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