Temperature compensated depth gauge for scuba diving

Details Temperature compensated depth gauge for scuba diving Temperature compensated depth gauge for scuba diving

1975-01-20

1976-11-09

Gill, James J.

Measuring and testing

Liquid level or depth gauge

Hydrostatic pressure type

73393, G01L 1904

Patent

active

039903060

ABSTRACT:
A scuba diving oil filled depth gauge has a rigid or semi-rigid case that houses operative depth gauge elements. Outside pressure is communicated to the inside oil through a rolling diaphragm made of thin and highly flexible rubber-like material. The expansion and contraction of the oil due to thermal and other effects produces compensation at the rolling diaphragm without the imposition of stresses whereby a true communication of external to internal pressure is accomplished for accurate reading of the gauge.

REFERENCES:
patent: 2659390 (1953-11-01), Mac Lea et al.
patent: 2935873 (1960-05-01), Stewart
patent: 3203244 (1965-08-01), Alinari

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