Visual indicator for safety systems

Details Visual indicator for safety systems Visual indicator for safety systems

1976-07-15

1978-02-07

Swisher, S. Clement

Signals and indicators

Bells

Gong type

251 63, F16K 3700

Patent

active

040721264

ABSTRACT:
A visual indicating device including a reflecting surface on one end thereof and a piston with an extendible and retractable indicator member attached thereto extending through the aperture. The extendible indicator member is colored and has a longitudinal bore in the outer end portion thereof. A transparent enclosure mounted on the housing encloses the reflected surface and is positioned in spaced relation therefrom to include a reflecting zone. A colored fixed indicator member secured to the enclosure extends in axial alignment with the extendible indicator member and is at least partially encloseable in the bore when the extendible indicator member is in an extended position. The fixed indicator member is colored in contrast to the extendible indicator member on the portion which is encloseable in the bore. In use, the reflective surface appears to have the same hue as the fixed indicator member colored end portion when the extendible indicator member is in a retracted position, and the reflective surface appears to have the same hue as the extendible indicator member when the extendible indicator member overlaps the fixed indicator member colored portion in an extended portion.

REFERENCES:
patent: 1999493 (1935-04-01), White
patent: 2850900 (1958-09-01), Billington
patent: 2954751 (1960-10-01), Barnes
patent: 3181496 (1965-05-01), Bilbrey

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