Radiant energy – Photocells; circuits and apparatus – Housings
Reexamination Certificate
2006-03-28
2006-03-28
Le, Que T. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Housings
C250S554000
Reexamination Certificate
active
07019283
ABSTRACT:
The present invention provides a flame resistant LED construction. The flame resistant LED construction of this embodiment comprises a substrate, one or more LEDs that emits light mounted on the substrate, and an intumescent material adjacent to the LEDs. The positioning of the intumescent material is such that at least a portion of the light emitted from the LEDs is unobstructed. Moreover, a sufficient amount of the intumescent material is in proximity to the LEDs that a flame on the LEDs is extinguished by the expansion of the intumescent material. The present invention also provides an LED construction in which a sufficient amount of the intumescent material is in proximity to the LEDs such that a temperature greater than or equal to about 250° F. causes the intumescent material to expand and form an insulating char which at least partially encompasses the one or more LEDs. Also provide by the invention is a method for making the LED construction of the invention.
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Brooks & Kushman P.C.
Bruce Industries, Inc.
Le Que T.
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