Illuminated lever position indicator

Details Illuminated lever position indicator Illuminated lever position indicator

1988-12-22

1990-12-25

Lazarus, Ira S.

Illumination

Illuminated scale or dial

362 26, 362 31, 362 32, G01D 1128

Patent

active

049808036

ABSTRACT:
A housing has a window with a plurality of panes. There is a light guide member in the form of first and second plates meeting at right angles. The first plate has white indicia painted on it and the light guide member is positioned so that the indicia are viewable in the window, one indicia in each pane. A red arm slides along the first plate on the side opposite the window. The arm is made of light guide material and is attached to a slidable tape and a lever passes through a hole in the tape so that the indicating arm moves in coordination with the lever to provide a red background to the one of the indicia in the window that indicates the position of the lever. A blue plate on the side of the arm opposite the window provides a blue background to the other indicia in the window. The light guide member and the arm are formed so that a single bulb located centrally to and along the edge of the second plate substantially uniformly illuminates the portions of the indicia means, the indicating arm, and the blue plate which are visible in the window.

REFERENCES:
patent: 3223833 (1965-12-01), Protzmann
patent: 3490226 (1970-01-01), Anderson et al.
patent: 3929092 (1975-12-01), Ogura
patent: 4137864 (1979-02-01), Lauper
patent: 4323951 (1982-04-01), Pasco
patent: 4566399 (1986-01-01), Hildebrand et al.
patent: 4798160 (1989-01-01), Mochida et al.

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