Method and apparatus for sensing pressure

Details Method and apparatus for sensing pressure Method and apparatus for sensing pressure

1979-07-03

1981-06-23

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

73705, 250231R, 340626, G08B 2100, G08D 534

Patent

active

042753937

ABSTRACT:
A pressure sensing device has a light source, and an optical sensor for externally sensing a predetermined change in the pressure within a sealed system which has a conventional gauge. Illumination from the light source is reflected off of the gauge dial and detected by the optical sensor. When the pressure in the sealed system changes a predetermined amount, the needle on the gauge moves so as to interrupt the illumination reaching the optical sensor. The optical sensor in turn produces a voltage that can be used to turn on a light or other indicator.

REFERENCES:
patent: 2142602 (1939-01-01), Blethen
patent: 3363148 (1968-01-01), Freeman
patent: 3633039 (1972-01-01), Herbstman et al.
patent: 3863067 (1975-01-01), Godley

Affiliated with

Also associated with

Rating

Method and apparatus for sensing pressure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for sensing pressure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for sensing pressure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2210827