Measuring and testing – Specific gravity or density of liquid or solid
Patent
1976-05-20
1979-01-30
Kreitman, Stephen A.
Measuring and testing
Specific gravity or density of liquid or solid
73 30, G01N 910
Patent
active
041365518
ABSTRACT:
A densimeter for measuring the density of a fluid with a disk-shaped body having an axis with a horizontal component and being rotatably mounted on a shaft along the axis. An open cavity is provided in the body so that the center of buoyancy of the body is displaced from the axis. The body has a generally homogeneous density and includes a region wherein the density is different from that of the disk. Because of the density anomaly the center of gravity of the body is displaced from both the center of buoyancy and from the axis. The outer perimeter of the body is circular so as to encounter minimal drag resistance while rotating in a fluid. When the densimeter is placed in a fluid, the disk will rotate on the shaft. The density of the fluid is determined from the angular position of the disk on the shaft upon reaching equilibrium.
REFERENCES:
patent: 2168353 (1939-08-01), Linebarger
patent: 2282069 (1942-05-01), Linebarger
patent: 2296169 (1942-09-01), Linebarger
patent: 2332807 (1943-10-01), Moore
patent: 2674119 (1954-04-01), Trainor
patent: 2674120 (1954-04-01), Trainor
patent: 3908467 (1975-09-01), Schwen
patent: 3956922 (1976-05-01), November
patent: 4037481 (1977-07-01), Callahan
Kreitman Stephen A.
Smith, Jr. Roy H.
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