Weighing scales – Self-positioning – Buoyancy type
Patent
1981-08-31
1983-06-14
Miller, Jr., George H.
Weighing scales
Self-positioning
Buoyancy type
177 50, 73 1B, 73 1H, 73309, G01G 502, G01G 1952, G01L 2500, G01F 2306
Patent
active
043877788
ABSTRACT:
A fluid measuring device comprises a plunger positioned within a tank containing fluid to be weighed by a load measuring cell and weight indicator. The weight of the plunger exceeds the maximum fluid upthrust exerted on it, and the net weight is transmitted to the load measuring cell and weight indicator through levers. At any fluid level there is a constant ratio between the horizontal cross-sectional areas of the plunger and the tank, and the weight indicator multiplies the measured load by this factor and any leverage ratios not accounted for by the load measuring cell. Callibration and testing is achieved, without having to remove the plunger from the tank or having to manipulate the fluid contained in the tank, by operating a lifting means to raise the plunger sufficiently to disconnect a hook joint, by applying a compensating moment to the lever through the application of the weight, by adjusting a counterpoise weight, and by using callibration weights.
REFERENCES:
patent: 1237478 (1917-08-01), Clift
patent: 3677356 (1972-07-01), Goodwin
patent: 4216886 (1980-08-01), Puschalovsky et al.
patent: 4244211 (1981-01-01), Carpino
patent: 4244218 (1981-01-01), Wohrl
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