Differential fluid-pressure transducer

Details Differential fluid-pressure transducer Differential fluid-pressure transducer

1975-04-22

1976-06-08

Woodiel, Donald O.

Measuring and testing

Speed, velocity, or acceleration

With means for retaining reading

G01L 716

Patent

active

039615332

ABSTRACT:
A differential fluid-pressure transducer having a housing with two spaced-apart fluid inlet openings and two fluid outlet openings. A spool is slidably disposed in the housing and has two oppositely-faced surfaces disposed intermediate the inlet openings, for receiving pressure from each respective inlet opening. The spool has a fluid passageway in flow communication from one of its two surfaces to a compartment at the end of the spool, whereby fluid pressure from one of the two inlet openings acts on both the one oppositely-faced surface and on the end of the spool which defines the compartment, and the fluid pressure at the other inlet opening influences the position of the spool, all for detecting the difference in pressure at the two inlet openings. Also, the spool can slide to a position which flow communicates the compartment to one of the housing outlet openings to thereby relieve pressure in the compartment. Finally, an instrument, such as a gauge or switch, can be fluid-flow attached to the other housing outlet which is in communication with the compartment to thereby detect the fluid pressure difference between the two inlet openings.

REFERENCES:
patent: 1992343 (1935-02-01), Ahnstrom
patent: 3034357 (1962-05-01), Brown
patent: 3198014 (1965-08-01), Corry

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