Density compensating float

Details Density compensating float Density compensating float

1984-10-15

1987-01-13

Frankfort, Charles

Measuring and testing

Liquid level or depth gauge

Float

73317, 73448, 222 67, 137416, G01F 2376, G01F 2338

Patent

active

046354808

ABSTRACT:
A density compensating float is used in conjunction with a stop-fill valve for limiting the filling of a tank. The primary application of the density compensating float is for use in LPG tanks. The compensating float includes a portion thereof having graded volumetric segments which correspond to the changes in density for a particular fluid, such as propane. For a given quantity of fluid in the tank, the float has an essentially constant angular position despite variations in the density of the fluid, and therefore changes in buoyancy of the fluid, as a result of changes in temperature. Thus, fluid at any temperature can be input into the tank and the stop-fill valve will be activated when a given quantity of fluid has been received without regard to the temperature of the fluid. This provides maximum filling of the tank while limiting the fluid to the maximum safe quantity.

REFERENCES:
patent: 2098085 (1937-11-01), D'Arcey
patent: 2201974 (1940-05-01), Andersson
patent: 2669123 (1954-02-01), Ballard
patent: 2678060 (1954-05-01), Arne
patent: 2761467 (1956-09-01), Arne
patent: 4064907 (1977-12-01), Billington et al.
patent: 4142419 (1979-03-01), Fenne et al.
patent: 4313459 (1982-02-01), Mylander
patent: 4483367 (1984-11-01), Ross, Jr. et al.

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