Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Patent
1981-10-26
1983-07-19
Gill, James J.
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
60721, H02N 1100
Patent
active
043937080
ABSTRACT:
A system is described for acoustically moving an object within a chamber, by applying wavelengths of different modes to the chamber to move the object between pressure wells formed by the modes. In one system, the object (96, FIG. 7) is placed in a first end portion of the chamber while a resonant mode is applied along the length of the chamber that produces a pressure well (86) at that location. The frequency is then switched to a second mode that produces a pressure well (100) at the center of the chamber, to draw the object thereto. When the object reaches the second pressure well and is still travelling towards the second end of the chamber, the acoustic frequency is again shifted to a third mode (which may equal the first mode) that has a pressure well (106) in the second end portion of the chamber, to draw the object thereto. A heat source (108) may be located near the second end of the chamber to heat the sample, and after the sample is heated it can be cooled by moving it in a corresponding manner back to the first end portion of the chamber. The transducers (88, 98, 110) for levitating and moving the object may be all located at the cool first end of the chamber.
REFERENCES:
patent: 3673872 (1972-07-01), Ensley
patent: 3882732 (1975-05-01), Fletcher
patent: 4052181 (1977-10-01), Wang et al.
patent: 4139806 (1979-02-01), Kanber et al.
patent: 4218921 (1980-08-01), Oran et al.
Barmatz Martin B.
Elleman Daniel D.
Jacobi Nathan
Trinh Eugene H.
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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