Pointer for an indicating instrument

Details Pointer for an indicating instrument Pointer for an indicating instrument

1987-08-05

1989-07-18

Cuchlinski, Jr., William A.

Signals and indicators

Indicators

Index structure

116328, G01D 1322

Patent

active

048482641

ABSTRACT:
A pointer for an indicating instrument is constructed of material transparent to light, the pointer having an elongated shape and a cross section having two inclined sides directed towards an apex, and a lower side opposite the apex and facing a face of the indicating instrument. The lower surface is provided with a layer of coloring, substantially opaque to the light, and giving a colored appearance to the pointer upon viewing the pointer by looking straight down upon the indicator face or at an angle thereto. The inclination of the pointer sides provides for respective refraction and total internal reflection to viewing rays of light which make visible the coloring.

REFERENCES:
patent: 2768606 (1956-10-01), Polye et al.
patent: 3559616 (1971-02-01), Protzmann
patent: 4300470 (1981-11-01), Furukawa
patent: 4625262 (1986-11-01), Sakakibara et al.

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