Temperature compensator for liquid filled pressure gauge

Details Temperature compensator for liquid filled pressure gauge Temperature compensator for liquid filled pressure gauge

1983-03-09

1985-02-26

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Bourdon

73431, G01L 1914, G01P 102

Patent

active

045011524

ABSTRACT:
A liquid filled pressure gauge in which temperature induced volumetric changes inposed on the liquid fill are compensated for by a tensioned flexible diaphragm secured in a pressure-tight spaced relation on a cover plate for the gauge casing. For receiving the diaphragm pre-tensioned, the cover includes an annulus extending laterally from the cover surface with a negative draft on its circumference. By virtue of the diametral relationship between the outside diameter of the diaphragm about the draft surface of the annulus and the internal diameter of the case opening, the diaphragm incurs a friction fit as the cover is emplaced causing diaphragm tension to be increased.

REFERENCES:
patent: 2693896 (1954-11-01), Brown
patent: 3938393 (1976-02-01), Mogensen et al.
patent: 4051730 (1977-10-01), Andrews et al.
Manning, Maxwell & Moore Dwg., 56C117, 1965-Item #28.
Dresser Industries, Inc., Dwg. WJF-004-Wika Gauge Construction Model 233.33, 1982-FIGS. 1 and 3.

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