System for visually monitoring pressure in an enclosed space

Details System for visually monitoring pressure in an enclosed space System for visually monitoring pressure in an enclosed space

2007-05-08

2007-05-08

Allen, Andre J. (Department: 2855)

Measuring and testing

Fluid pressure gauge

Diaphragm

Reexamination Certificate

active

11256144

ABSTRACT:
A compliant balloon having an outer reflective surface which is positioned next to a transparent window which has an opaque element thereon, the reflection of the opaque element from the outer reflective surface of the balloon being visible when the outer reflective surface is not forced very near or against said opaque element on said transparent window, but prevented when said front reflective surface is forced very near or against the opaque element.

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