Optical warning indicator means on bimetal measuring element

Details Optical warning indicator means on bimetal measuring element Optical warning indicator means on bimetal measuring element

1977-07-08

1979-02-27

Yasich, Daniel M.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

116221, 250230, 324106, G01D 528, G01K 570

Patent

active

041412478

ABSTRACT:
An indicator includes a dial having a translucent section supported on a housing, a light beam directed along a path through the housing such that light is not normally received at the translucent section, a measuring element movable within the housing in accordance with a condition to be sensed and a reflector carried by the measuring element and movable therewith to intersect the light beam path to reflect the light beam to the translucent section when a predetermined condition is sensed.

REFERENCES:
patent: 2528640 (1950-11-01), Coleman
patent: 2840698 (1958-06-01), Bercovitz, Jr.
patent: 3606151 (1971-09-01), Dumast et al.
patent: 3631341 (1970-12-01), Kazuno

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