Luminant pointer for meters

Details Luminant pointer for meters Luminant pointer for meters

1979-10-30

1981-11-17

Goldberg, Gerald

Signals and indicators

Indicators

Index structure

116288, G01D 1322

Patent

active

043004709

ABSTRACT:
A luminant pointer for use in a meter is disclosed, which comprises a finger portion having a trapezoidal sectional shape with the transverse width of its upper face being selected to be longer than that of its lower face, and a layer of color paint provided on the lower face of the finger portion. The entire upper face of the finger portion of the pointer having such a construction can thus glow with the color of the paint in spite of the fact that the color paint layer is provided merely on the lower face having a considerably smaller area than that of the upper face of the finger portion of the pointer. Therefore, the amount of the paint required for the luminant indication purpose is decreased to reduce the rate of absorption of light by the paint, thereby obviating the tendency of sharp reductions in the intensity of light advancing from the radially inner end toward the radially outer end of the finger portion of the pointer on the meter dial.

REFERENCES:
patent: 2843664 (1958-07-01), Olin
patent: 2900949 (1959-08-01), Baker
patent: 3033155 (1962-05-01), Beckman
patent: 4068121 (1978-01-01), Bringhurst

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