Pressure gauge for sphygmomanometers

Details Pressure gauge for sphygmomanometers Pressure gauge for sphygmomanometers

1979-03-23

1980-12-23

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

With variable drive

73715, G01L 708

Patent

active

042402972

ABSTRACT:
A pressure gauge for sphygmomanometers, having a pressure capsule with a diaphragm wall, a pointer on a rotatable spring-biased pointer shaft, and a drive mechanism connecting the diaphragm wall to the pointer shaft by picking up and magnifying the displacements of the diaphragm wall, the drive mechanism including a sensing member on a rotatable sensing shaft, in contact with the diaphragm wall, and a magnifying gear drive consisting of a drive arm on the sensing shaft with gear teeth forming a gear segment of large radius, in driving engagement with a pinion on the pointer shaft. The drive arm may be bendable to adjust the gear drive ratio.

REFERENCES:
patent: 1411917 (1922-04-01), Harris
patent: 1666787 (1928-04-01), Michelin
patent: 2194624 (1940-03-01), Titterington, Jr.
patent: 4036061 (1977-07-01), Speidel

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