Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Patent
1982-03-15
1983-12-20
Gill, James J.
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
60721, 318116, 310300, H02N 1100
Patent
active
044209770
ABSTRACT:
A system is described for acoustically controlled rotation of a levitated object (12), which avoids deformation of a levitated liquid object. Acoustic waves (50, 52 in FIG. 6) of the same wavelength are directed along perpendicular directions across the object, and with the relative phases of the acoustic waves repeatedly switched so that one wave alternately leads and lags the other by 90.degree.. The amount of torque for rotating the object, and the direction of rotation, are controlled by controlling the proportion of time one wave leads the other and selecting which wave leads the other most of the time.
REFERENCES:
patent: 3882732 (1975-05-01), Fletcher
patent: 4139806 (1979-02-01), Kanber et al.
Croonquist Arvid P.
Elleman Daniel D.
Wang Taylor G.
Gill James J.
Jones Thomas H.
Manning John R.
McCaul Paul F.
The United States of America as represented by the Administrator
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