Direct-acting low pressure sensor

Details Direct-acting low pressure sensor Direct-acting low pressure sensor

1976-11-05

1977-11-22

Woodiel, Donald O.

Measuring and testing

Speed, velocity, or acceleration

With means for retaining reading

G01L 704

Patent

active

040590186

ABSTRACT:
A direct-acting pressure sensor of the elastic type capable of operating effectively in a very low pressure range. The sensor includes a flexible bladder of non-metallic material anchored at one end to a fluid input socket which communicates with the internal chamber of the bladder, the closed end of the bladder having an eyelet therein through which extends a spring wire. One end of the wire terminates at the socket while the free end thereof functions as a scale pointer. When fluid is fed to the bladder through the input socket, the bladder, which in the absence of pressure is coiled to assume a C-shaped configuration, is caused to uncoil to an extent determined by the applied pressure. The wire engaged by the uncoiling bladder is caused to deflect to provide a scale reading indicative of pressure.

REFERENCES:
patent: 3603153 (1971-09-01), Schmaus
patent: 3732733 (1973-05-01), Schmaus et al.
patent: 3986400 (1976-10-01), Schmaus

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