Phosphorescent key pad

Details Phosphorescent key pad Phosphorescent key pad

1990-10-31

1991-12-17

Husar, Stephen F.

Illumination

Light source or light source support and luminescent material

362 24, 362 85, 362109, 40542, 40337, 2504651, F21V 916

Patent

active

050738437

ABSTRACT:
A key pad having phosphorescent portions which provide the user with the ability to read the key pad in dark environments, thereby ensuring that the key pad is utilized without error. Information indicia on the key pad, or areas immediately adjacent thereto, are provided with phosphorescence. The key pad may be manufactured with this property, or phosphorescent informational indicia may be sold in kit form to be selectively applied via an adhesive to a conventional key pad.

REFERENCES:
patent: 1246080 (1917-11-01), Frank
patent: 2382806 (1945-08-01), Motson
patent: 3197573 (1965-07-01), Anson
patent: 4124879 (1978-11-01), Schoemer
patent: 4247747 (1981-01-01), Swattan
patent: 4255622 (1981-03-01), Reed
patent: 4343975 (1982-08-01), Sado
patent: 4449024 (1984-05-01), Stracener
patent: 4893222 (1990-01-01), Mintzer
patent: 4905127 (1990-02-01), Kaminski
patent: 4949230 (1990-08-01), Burmeister
Lterature of Palmer Paint Products, Inc., Troy, MI "Creative Touch" circa 1990.
Shannon Luminous Materials, Inc., of Santa Ana, CA, Advertisement on p. 7430 of 1987 Thomas Register.

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