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AssigneeKoehler Manufacturing Company
InventorsJohn E. Gulliksen, Roy A. Guimond
Estimating the term…
A luminaire housing body is formed with a reflector chamber closed at one side by a radiation transmitting member. At an opposite side, the housing is extended to form a socket enclosure. A lamp socket member is rotatably mounted in the socket enclosure and is structured to define spaced apart inwardly dished reflector surfaces, hereinafter referred to as concaved reflective surfaces, in each of which a lamp may be placed at a focal point and independently energized by electrical means. A reflector member is located in back of the radiation transmitting member and is formed with a socket aperture. At either side of the concaved reflector surfaces, the socket member is shaped to present tapered outer ends which can be moved into and out of the socket aperture. The arrangement of the parts is such that a de-energized lamp is constantly shielded by the tapered ends to prevent shadow or distortion when another lamp is in use. The socket member is rotated by means of a socket locking spindle which when removed, allows for lamp socket replacement, if desired. When the luminaire apparatus is utilized as a portable unit, the lamps are energized by a battery also carried by the user. Each lamp is independently operable by switch control means in the socket enclosure. When provided with an attaching hook, the housing in a relatively small size may be attached to a cap member to constitute a headpiece. Such a headpiece is particularly suited for use with a miner's cap lamp apparatus wherein the rotary socket means may support dual lamps to provide a miner with effective back-up light sources.
Luminaire apparatus including a housing formed at a front side thereof with a reflector chamber having a reflector element mounted therein, a central section of the reflector element being removed to provide spaced apart edges which define an opening having a central axis coinciding with the central axis of the housing, said housing including a rearwardly disposed portion constructed with a lamp socket enclosure, said lamp socket enclosure being formed at one side thereof with guide surface means, a multiple lamp socket body mounted in the lamp socket enclosure for movement on said guide surface means, the multiple lamp socket body presenting a plurality of spaced apart lamp sockets, respective lamps and arcuate reflector portions occurring at either side of the lamps, said arcuate reflector portions being complementary to the said reflector element, said lamp socket body having electrical contact buttons extending outwardly from opposite sides thereof and being electrically connected to respective sockets, a plurality of inwardly extending electrical contact elements supported in the housing between the reflector opening and the lamp socket enclosure, said contact elements occurring in spaced apart relationship at either side of the central axis of the housing, means for supplying an electrical current to the contact elements, a retractable knob and spindle means rotatably mounted in the lamp socket enclosure and displaceably keyed to the lamp socket body for moving the contact buttons into and out of engagement with the contact elements to selectively energize said lamps.
Dependencies are inferred from the claim text.