Indicator dial and method of making same

Details Indicator dial and method of making same Indicator dial and method of making same

1978-12-08

1980-12-02

Yasich, Daniel M.

Signals and indicators

Indicators

Rotary indicator with actuating means

40573, 116298, 362 29, G09F 9307, G01D 1128

Patent

active

042364809

ABSTRACT:
An indicator dial having at least one scale thereon and having at least one illuminable indication area for providing a visual signal of a physical function, wherein the dial comprises a thin transparent plate having an opaque dye coat on one face thereof with at least one area free of the opaque dye coat and having a translucent dye coat of contrasting color in the area, and the scale being on the side of the plate facing a viewer, whereby the scale is visible at all times, but the indication areas are visible to the viewer only when illuminated from behind the dial. The dial is made by applying the dye coats and scale markings in sequential operations by use of a screen printing process.

REFERENCES:
patent: 2108342 (1938-02-01), LeFevre
patent: 2372124 (1945-03-01), Schenkel
patent: 2563537 (1951-08-01), Lash
patent: 2594081 (1952-04-01), Shlenker
patent: 2824954 (1958-02-01), Roper
patent: 2886911 (1959-05-01), Hardesty
patent: 2931117 (1960-04-01), Bosworth et al.
patent: 3499417 (1970-03-01), Heinke
patent: 3503365 (1970-03-01), Baez et al.
patent: 3780463 (1973-12-01), Arnoff

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