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System and method for attenuating the effect of ambient light on an optical sensor |
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Projection exposure apparatus |
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Partial coherence varier for microlithographic system |
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Illuminating arrangement including a zoom objective incorporating two axicons |
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Illuminating system for vacuum ultraviolet microlithography |
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Double switch miniature flashlight
| Details |
Inventors: Maglica, Anthony; Johnson, Ralph E.; Lewis, Armis L.;
Assignee: Mag Instrument, Inc. (Ontario, CA)
Primary Examiner: Lazarus; Ira S.
Assistant Examiner: Cox; D. M.
Attorney, Agent or Firm: Lyon & Lyon
A miniature two or three cell flashlight as disclosed to comprise a barrel, a tailcap, a head assembly, and means for holding a miniature lamp bulb and for providing interruptible electrical coupling to dry cell batteries retained within the barrel and having a recharger for charging the chargeable batteries via conductors in the tailcap. |
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DETAILED DESCRIPTION It is a primary object of the present invention to provide miniature hand-held flashlights having a recharging capability. It is another object of the present invention to provide miniature flashlights having three dry cell batteries as a power source. It is another object of the present invention to provide miniature flashlights having various tailcap constructions. It is another object of the present invention to provide miniature hand-held flashlights having improved optical characteristics. It is another object of the present invention to provide a rechargeable miniature hand-held flashlight which is capable of producing a beam of light having a variable dispersion. It is a further object of the present invention to provide a rechargeable miniature hand-held flashlight which is capable of supporting itself vertically on a horizon surface to serve as an "ambient" unfocused light source. It is another object of the present invention to provide a rechargeable miniature hand-held flashlight wherein relative motions of components that produce the variation and the dispersion of the light beam provide an electrical switch function to open and complete the electrical circuit of the flashlight. These and other objects of the present invention, which may become obvious to those skilled in the art through the hereinafter detailed description of the invention are achieved by a miniature flashlight and battery charger comprising: a cylindrical tube containing one or more miniature dry cell batteries and preferably three AA sized batteries which, when used with the charger should be suitable for charging, disposed in a series arrangement, a lamp bulb holder assembly including electrical conductors for making electrical contact between terminals of a miniature lamp suitable for use with rechargeable batteries, and the cylindrical tube and an electrode of the battery, respectively, retained in one end of the cylindrical tube adjacent the batteries, a tail cap and spring member enclosing the other end of the cylindrical tube and providing an electrical contact to another electrode of the batteries and providing for charging of the batteries within the tube, and a head assembly including a reflector, a lens, a face cap, which head assembly is rotatably mounted to the cylindrical tube such that the lamp bulb extends through a hole in the center of the reflector within the lens and a charger housing which may be electrically coupled to the tube at the tailcap
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