Illuminated indicator gauge

Details Illuminated indicator gauge Illuminated indicator gauge

1989-12-01

1991-07-02

Lazarus, Ira S.

Illumination

Illuminated scale or dial

Illuminated through meter case

362 84, 362293, 116DIG36, G01D 1128

Patent

active

050290460

ABSTRACT:
An indicator gauge is disclosed, which comprises a meter panel. The meter panel includes a transparent base plate, a transparent colored layer applied to a rear surface of the transparent base platen and a fluorescent transparent substance layer applied to a front surface of the transparent base plate. A visual alarm indicator includes an opaque mark mounted to a given portion of the meter panel, a lamp housing having an open end which is connected to a rear surface of the meter panel in such a manner as to face toward the given portion and an electric lamp installed in the lamp housing. An ultraviolet lamp is arranged in front of the meter panel and generates ultraviolet rays upon electric energization thereof.

REFERENCES:
patent: 3267598 (1966-08-01), Olesen et al.
patent: 4841155 (1989-06-01), Ushida et al.
patent: 4845595 (1989-07-01), Fujii et al.
patent: 4882659 (1989-11-01), Gloudemans
patent: 4975807 (1990-12-01), Oharhi

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