Radiant energy concentration by optical total internal reflection
Miniature battery-operated light
ApplicationNo. 503930 filed on 07/19/1995
US Classes:362/196, Mating-halves type flashlight casing362/199, Separate lamp housing or lamp support pivoed to flashlight casing362/200, Flat flashlight casing362/267With sealing means or artifical atmosphere
ExaminersPrimary: Lazarus, Ira S.
Assistant: Spark, Matthew J.
Attorney, Agent or Firm
International ClassesF21L 001/00
AbstractA portable flashlight includes a low-profile housing, and disposed within the housing a special lens, a power source, and a light source. The light source has a shoulder portion, and a lamp portion with a filament a controlled distance from the shoulder. A socket disposed inside the housing a controlled distance from the lens is sized to receive the shoulder portion of the light source. The socket inside end receives the light source, electrically connecting the light source to the power source. Tight control of the focal length provides a collimated beam of light from a low-profile housing. A preferred embodiment also includes a handle formed to the housing with a multi-position detent, operative as a carrying handle or as a support stand. A preferred embodiment further includes a housing having two halves that are releasably attached to each other by a camming mechanism, to provide easy access inside the housing. And a preferred embodiment includes a number of gasket seals to provide a substantially water-tight construction.