Head for a bubble tube
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United States of America Patent
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-
Jan 19, 1988
Grant Date -
N/A
app pub date -
Jun 30, 1986
filing date -
Jan 31, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for sensing hydrostatic pressure in a fluid, forming a head for a bubble tube for immersion into the fluid. The head is formed of a plate having a flat lower surface for horizontal disposition within a liquid, a first orifice for introducing a gas under pressure from above the plate whereby the gas can form a bubble under the plate within the liquid. The effect of the plate is as a surface on which a stable sessile bubble of a variable size can be grown. This results in a bubble having a substantially increased radius of curvature at its interface, that is, the gas/liquid interface, on the underside of the bubble than previously obtainable. A pressure gauge measuring the gas pressure in the tube determines the pressure at the end of the tube within the fluid.
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