Luminous pointer

Details Luminous pointer Luminous pointer

1993-03-22

1994-06-14

Cuchlinski, Jr., William A.

Signals and indicators

Indicators

Rotary indicator with actuating means

116328, G01D 1322

Patent

active

053200632

ABSTRACT:
Disclosure is a luminous pointer made of a light emission element of the inorganic substance dispersion type, high in accuracy of reading, and low in cost. The light emission element of the inorganic substance dispersion type is shaped as a rod, and includes a linear metal core, an electrically-insulating reflective layer made of an enamel and disposed on the core, a fluorescent light emission layer which is made of an enamel and a fluorescent substance dispersed therein and is disposed on the reflective layer, an electroconductive film disposed on the light emission layer and capable of being electrically connected to the core, and an outer electrically-insulating layer disposed on the film. The film has at least one slit which has a width smaller than the diameter of the luminous pointer and extends as a luminously visible portion in the longitudinal direction of the film. An intermediate electrically-insulating layer made of an enamel may be provided between the light emission layer and the film. The film is manufactured by applying an electroconductive paste or plating with a metal. In the light emission layer, the dispersed fluorescent substance may be provided only near the slit of the film.

REFERENCES:
patent: 2824992 (1958-02-01), Bouchard et al.
patent: 2964666 (1960-12-01), Klasens et al.
patent: 3066643 (1962-12-01), Flanagan, Jr.
patent: 3071105 (1963-01-01), Wertheimer
patent: 3094970 (1963-06-01), Zargarpur
patent: 3103607 (1963-09-01), Rulon
patent: 3219008 (1965-11-01), Harris et al.
patent: 5050045 (1991-09-01), Kato et al.

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