Indicator

Details Indicator Indicator

1989-02-01

1991-02-12

Shoap, Allan N.

Signals and indicators

Indicators

Rotary indicator with actuating means

362 23, 362 84, G01D 1128

Patent

active

049915371

ABSTRACT:
Disclosed herein is an improvement of an indicator such as a speed meter, a tachometer, or the like for use in a motor vehicle. The indicator comprises a scale plate having a pointer rotatably mounted thereon, indicia provided on the scale plate and containing fluroescent brigthener, the indicia indicating a specific value in cooperation with the pointer, a single ultraviolet light source for illuminating the indicia, and technique for equalizing the brightness of the indicia.

REFERENCES:
patent: 2381924 (1945-08-01), Overton
patent: 4044708 (1977-08-01), Klein
patent: 4443835 (1984-04-01), Brantigam et al.
patent: 4536656 (1985-08-01), Sowa
patent: 4561042 (1985-12-01), Wehner et al.
patent: 4581683 (1986-04-01), Reiter et al.
patent: 4652464 (1984-03-01), Ludlum et al.
patent: 4772986 (1988-09-01), McNemor
patent: 4807091 (1989-02-01), Obata
patent: 4841155 (1989-06-01), Ushida et al.

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