Illumination – Light source or light source support and luminescent material
Reexamination Certificate
1999-02-23
2001-02-13
O'Shea, Sandra (Department: 2875)
Illumination
Light source or light source support and luminescent material
C362S208000
Reexamination Certificate
active
06186634
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to a hand held lighting device. More particularly, to a hand held lighting device having a luminescent body for providing a light source in which to locate the hand held lighting device in the absence of light.
BACKGROUND OF THE INVENTION
Flashlights, hand held lighting devices having light reflectors, reflective tape; reflective paint thereon are commonly used to locate these devices for normal or emergency situations involving power failures, fires, smog, earthquakes and the like, where interior or exterior areas have a minimum or complete absence of light. These devices are typically stored on shelves, walls, or on cabinets to facilitate their locations.
Many types of materials are known to help reflect light or transmit light, these include reflective metallic materials, reflective paints and chemiluminescent materials. Most of the aforementioned materials will only function in the presence of some light.
There remains a need for a hand held lighting device having a luminescent body for providing a light source to locate the hand held lighting device in an interior or exterior area having a minimum or complete absence of light.
DESCRIPTION OF THE PRIOR ART
Flashlights, hand held lighting devices having reflectors, reflective tape, reflective paint thereon of various designs, styles, structures, configurations, and materials of construction have been disclosed in the prior art.
None of the prior art patents teach or disclose a hand held lighting device having a luminescent body for providing a light source in which to locate the lighting device in the absence of light.
Accordingly, it is an object of the present invention to provide a hand held lighting device having a luminescent body for producing a bright light source in order to locate the hand held lighting device in the absence of light.
Another object of the present invention is to provide a hand held lighting device that includes a luminescent body having a coating made from luminescent chemical materials selected from the group consisting of white phosphorous, red phosphorous, phosphors, organic guanines (fish scales), metallic and non-metallic micas, bismuth oxychloride, phosphorous oxychloride, or other chemiluminescent materials.
Another object of the present invention is to provide a hand held lighting device that produces a light source from a luminescent material which glows white, red, yellow or green in the absence of light.
Another object of the present invention is to provide a hand held lighting device that includes a shell housing cover for protecting the luminescent coating on the housing of the lighting device from wearing off or deteriorate through normal use and handling.
A further object of the present invention is to provide a hand held lighting device having a luminescent coating that is long-lasting, durable in use, and reliable for producing a light source in the absence of light. A still further object of the present invention is to provide a hand held lighting device having a luminescent coating that may be mass produced in an automated and economical manner and is readily affordable by the user.
SUMMARY OF THE INVENTION
The present invention provides for a hand held lighting device having a luminescent body for providing a light source in the absence of light. The hand held lighting device includes a housing having an outer curved wall surface and an end wall. The housing includes an attached lamp assembly having a light bulb, a reflector member and a lens therein. The housing also includes a battery cover and an interior compartment having a battery section for receiving one or more batteries for supplying power to the lamp assembly. The hand held lighting device includes a switching device in the housing for switching the lamp assembly to battery power in order to energize the lamp assembly. The housing further includes female socket receptacle for connectedly attaching to a battery charger for the recharging of the batteries for supplying power to the lamp assembly; and a luminescent coating for producing a light source on the outer curved wall surface, the battery cover and the end wall for affording visibility to the housing of hand held lighting device in the absence of any other light source. The hand held lighting device also includes a shell housing cover for protecting the luminescent coating from wearing off. The shell housing cover is attachable to the lamp assembly.
REFERENCES:
patent: 2848598 (1958-08-01), Amlee
patent: 4001803 (1977-01-01), Lombardo
patent: 4237409 (1980-12-01), Sugalski
patent: 4480295 (1984-10-01), Shuster
patent: 4502102 (1985-02-01), Phopps
patent: 4901664 (1990-02-01), Labrecque
patent: 4959637 (1990-09-01), Woods
patent: 5007647 (1991-04-01), Gulick
patent: 5239989 (1993-08-01), Chen
patent: 5752761 (1998-05-01), Pietruczynik
patent: 5884760 (1999-03-01), Carpenter
O'Shea Sandra
Sawhney Hargobind S.
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