Apparatus for detecting when the pressure detector in a fluid li

Details Apparatus for detecting when the pressure detector in a fluid li Apparatus for detecting when the pressure detector in a fluid li

1980-12-15

1983-09-13

Tolin, G. P.

Electricity: circuit makers and breakers

Fluid pressure

Diaphragm

200 83J, 200 819R, 92128, H01H 3534

Patent

active

044044402

ABSTRACT:
A pressure detector for particular use in a system for administering parenteral fluid to a human patient. The pressure detector includes a conventional pressure diaphragm having a flexible membrane that is movable in accordance with the pressure of the fluid being administered. The pressure detector further includes a special receptacle for retaining the pressure diaphragm, and a special follower assembly that is moved in a prescribed fashion by installation of the diaphragm in the receptacle and by movement of the diaphragm membrane due to variations in fluid pressure. A pair of electrical contacts are controllably moved together and apart by the follower assembly, to provide an electrical signal whenever the diaphragm is not installed or, if it is installed, whenever the fluid pressure exceeds a prescribed threshold.

REFERENCES:
patent: 2086264 (1937-07-01), Gorschalki
patent: 2996588 (1961-08-01), Putnam
patent: 3304381 (1967-02-01), McAnespey
patent: 3665156 (1972-05-01), Lee
patent: 4157092 (1979-06-01), Fare

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