Precision controlled cartesian diver

Details Precision controlled cartesian diver Precision controlled cartesian diver

1988-07-11

1989-12-12

Raevis, Robert R.

Education and demonstration

Science

Physics

273 1L, G09B 2306

Patent

active

048864595

ABSTRACT:
A closed fluid containing device wherein precise and reversible controlled pressure is applied to a contained fluid and to a freely enclosed, variably bouyant, pressure sensitive submersible that transits a vertical travel guide reciprocably. Variance of the controlled applied pressure varies the fluid displacement and bouyancy of the pressure sensitive submersible. Within the limiting factors of displacement of the fluid, specific gravity, density, and vertical location, the submersible will then rise, fall, or remain freely suspended. Timely direct or indirect observation of indicia related to a piston that controls the applied pressure, observation of indicia on the submersible in transit or freely suspended, and observation of indicia on the vertical travel guide provide data necessary for the calculation of values of a plurality of physical properties of fluids including fluid pressure, specific gravity, density and bouyancy, as well as a plurality of properties related to the motion of solids through fluids including velocity, acceleration, terminal velocity, drag, and viscosity.

REFERENCES:
patent: 1675522 (1928-07-01), Weidinger et al.
patent: 2509112 (1950-05-01), Seaman
patent: 3077697 (1963-02-01), Fry
patent: 3334439 (1967-08-01), Lodrick
patent: 3661652 (1972-05-01), Vitenbroek
patent: 3824711 (1974-07-01), Lawlor et al.
patent: 3878624 (1975-04-01), DeFelice
patent: 4455782 (1984-06-01), Seefluth

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