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Portable fluorescent work light

  • US 5,528,477 A
  • Filed: 09/16/1994
  • Issued: 06/18/1996
  • Est. Priority Date: 09/16/1994
  • Status: Expired due to Term
First Claim
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1. A fluorescent work light assembly comprising:

  • a) a twin tube fluorescent bulb having two parallel tubes each having a first end and a second end and a first predetermined length between said first and second ends;

    said tubes joined to one another mechanically and electrically at said second ends and supported by a first insulating support member adjacent said first ends of said tubes and supported by a second insulating support member adjacent said second ends of said tubes;

    b) a transparent, substantially cylindrical protective envelope having a passageway therethrough from a first end to a second end and a second predetermined length, longer than said first predetermined length to provide a first extension beyond said first ends of said tubes terminating in a first free end and a second extension beyond said second ends of said tubes terminating in a second free end;

    a first diametrical bore perpendicular to the longitudinal axis of said tubes, and extending through the walls of said first extension and a second diametrical bore perpendicular to the longitudinal axis of said tubes and extending through the walls of said second extension;

    c) said first support member, positioned within said protective envelope adjacent said first end, said first support member having a first aperture therethrough to receive and hold said first ends of said bulb;

    d) said second support member positioned within said envelope adjacent said second end, said second support member having a second aperture therethrough to receive and hold said second ends of said bulb;

    e) first opaque end cap means comprising two first semi-cylindrical mating sections, each having an open first end and a substantially closed second end, said first sections when mated encircle, at said first sections first ends, said protective envelope adjacent said first free end and at said first sections second end forming a substantially complete first end cap end wall preventing access, through said first end cap, to said passageway of said protective envelope, said first end cap end wall separated from said first free end of said envelope along said longitudinal axis of said tubes and first assembly means coupled to each of said two first sections to hold said first end cap means in assembly about said protective envelope, said first assembly means extending between said two first sections at a location intermediate said first and second ends of said first end cap means sections;

    f) second opaque end cap means comprising two second semi-cylindrical mating sections, each having an open third end and a substantially closed fourth end, said second sections when mated encircle, at said second sections third ends, said protective envelope adjacent said second free end and at said second sections fourth ends forming a substantially complete second end cap end wall preventing access, through said second end cap, to said passageway of said protective envelope, said second end cap end wall separated from said second free end of said envelope said longitudinal axis of said tubes and second assembly means coupled to each of said two second sections to hold said second end cap means in assembly about said protective envelope, said second assembly means extending between said two second sections at a location intermediate said third and fourth ends of said second end cap sections;

    g) a single contact pin for each tube located at said first end of said tubes, said contact pins extending beyond said first support member and adapted to be connected to a source of power to light said fluorescent bulb; and

    h) power supply means connected to said contact pins to selectively apply electrical power to said contact pins to cause said fluorescent bulb to light.

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