Protected halogen lamp

Details Protected halogen lamp Protected halogen lamp

1996-10-09

1999-12-07

Sember, Thomas M.

Illumination

Guard means

362414, 362276, 362802, 362375, F21V 1500

Patent

active

059971606

ABSTRACT:
A stand alone electric lamp for illumination which includes a tungsten-halogen bulb as the illuminating member. The lamp includes a support member, an upwardly directed open pan affixed to the support member in which the tungsten-halogen light bulb is disposed, a protector member disposed over the open pan to prevent foreign objects from coming into contact with the tungsten-halogen light bulb and a thermally activated switch. The protector member is substantially transparent to light from the tungsten-halogen bulb to allow light therefrom to pass through the protector member in a substantially unobstructed fashion. The thermally activated switch is disposed within the open pan for interruption of the application of electrical energy to the tungsten-halogen light bulb when temperatures at the protector member reaches a predetermined level. The thermally activated switch may be a one time operational device which functions in the manner of a fuse, a manually resettable switch, or a switch which pivots from off to on as the temperature drops from the predetermined level at which it becomes open to a lesser level. The switch preferably incorporates a thermal sensor such as a thermistor or alternatively may be a bimetal disc or a linear bimetal unit depending upon the particular application desired.

REFERENCES:
patent: 1923970 (1933-08-01), Dowling
patent: 2469412 (1949-05-01), Roebken
patent: 4635172 (1987-01-01), Steinke
patent: 4694223 (1987-09-01), Campolo
patent: 4751623 (1988-06-01), Gaines et al.
patent: 4751624 (1988-06-01), Russo et al.
patent: 4959762 (1990-09-01), Soileau
patent: 5099404 (1992-03-01), Kenum
patent: 5221141 (1993-06-01), Swanson
patent: 5519594 (1996-05-01), Wu
patent: 5725303 (1998-03-01), Lin

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