Indicators

Details Indicators Indicators

1992-05-12

1994-04-05

Cuchlinski, Jr., William A.

Signals and indicators

Indicators

Fluid flow

G01L 1912

Patent

active

052995267

ABSTRACT:
A differential pressure indicator is of the type which uses a magentically attracted spring loaded pop-up button to indicate when the pressure difference between two fluids reaches a predetermined difference. In order to reduce or eliminate false readings caused by fretting between the button and a housing passage in which it slides the button and the passage have a square cross-section to prevent rotation.

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patent: 4651670 (1987-03-01), Silverwater
patent: 4768460 (1988-09-01), Soon-Fu
patent: 4770044 (1988-09-01), Ferris
patent: 4827095 (1989-05-01), Clark et al.
patent: 4867095 (1989-09-01), Shane et al.

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