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United States of America Patent
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Jan 24, 1989
Issued Date -
N/A
app pub date -
Mar 31, 1987
filing date -
Sep 19, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gauge or indicator (20) for providing a positive on/off visual indication comprises a lens (22) and a transition mount (24) with a resilient diaphragm (32) secured therebetween to define a sealed chamber therein. The chamber is filled with an opaque liquid (34) and a contrasting plug (36) which is secured to the diaphragm (32) and movable therewith responsive to an actuator stem (38) between an 'off' position obscured by the liquid and an 'on' position wherein the plug is visible behind the lens (22) upon displacement of the liquid.
First Claim
Family
International Classification(s)
Cited Art Landscape
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