Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type
Patent
1983-02-24
1985-06-04
Yasich, Daniel M.
Measuring and testing
Liquid level or depth gauge
Hydrostatic pressure type
73432R, 73732, 235 83, G01F 2318, G01L 708
Patent
active
045206686
ABSTRACT:
A manometric instrument for use with air bottles of an underwater respirator for underwater diving, comprises a sealed casing having a transparent closure cover; a first fixed scale fixed within the casing for indicating pressure and having graduations based on a first unit of measurement; a second fixed scale fixed within the casing adjacent the first fixed scale for indicating pressure and having graduations based on a second unit of measurement; either the first or second units of measurement expressing units of length, and the other expressing residual pressure of air in the air bottles; an adjustable fixed scales; a first movable scale fixed on the support element and having graduations based on the second units of measurement and differing from the second fixed scale; a second movable scale fixed on the support element for indicating an ascent time as a function of either the depth under water and the residual pressure, when the support element is adjustably displaced such that a value on the first movable scale is brought into coincidence with the same value on the second fixed scale; an indicator element movable along the first fixed scale and the second movable scale; and a transducer device for detecting pressure and for controlling the position of the indicator element in dependence on the detected pressure so as to indicate the ascent time on the second movable scale.
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patent: 4050314 (1977-09-01), Longhetto
Bobis Daniel H.
Jackson David A.
Yasich Daniel M.
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