Gauge

Details Gauge Gauge

1998-09-10

1999-11-30

Fuller, Benjamin R.

Measuring and testing

Fluid pressure gauge

Diaphragm

600485, 600498, G01L 708, A61B 500

Patent

active

059922397

ABSTRACT:
A gauge is provided, preferably for patient use, in which a piston moves linearly within a gauge body against the force of a spring. A diaphragm separates the sensing side of the piston from the clean or atmosphere side of the piston. The diaphragm rolls against the piston and the wall of the chamber during changes in pressure, and does not interfere with accuracy of the readings. Dampening is provided out of the patient fluid stream. The sight glass through which measurements are read produces an optical magnification. A baffle prevents entrained particles from the patient from entering the gauge in significant amounts. A surface-to-surface seat enables the gauge to be mounted as a saddle seat on a duct, regulator or the like.

REFERENCES:
patent: 3391691 (1968-07-01), Young
patent: 4182175 (1980-01-01), Boehringer
patent: 4231375 (1980-11-01), Boehringer
patent: 4283954 (1981-08-01), Echtler et al.
patent: 4382739 (1983-05-01), Mack et al.
patent: 4552153 (1985-11-01), Newman et al.
patent: 4966035 (1990-10-01), Huang
patent: 5189979 (1993-03-01), Popenoe

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