Gravity enhanced acoustic levitation method and apparatus

Details Gravity enhanced acoustic levitation method and apparatus Gravity enhanced acoustic levitation method and apparatus

1983-12-09

1985-06-04

Levy, Stewart J.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

G10K 1000

Patent

active

045206562

ABSTRACT:
An acoustic levitation system is provided for acoustically levitating an object, by applying a single frequency from a transducer into a resonant chamber surrounding the object. The chamber includes a stabilizer location (29, FIG. 2) along its height, where the side walls of the chammber are angled so they converge in an upward direction. When an acoustic standing wave pattern is applied between the top and bottom of the chamber, a levitation surface (28) within the stabilizer does not lie on a horizontal plane, but instead is curved with a lowermost portion (31) near the vertical axis of the chamber. As a result, an acoustically levitated object (30) is urged by gravity towards the lowermost location (31) on the levitation surface, so the object is kept away from the side walls of the chamber.

REFERENCES:
patent: 3882732 (1975-05-01), Fletcher et al.
patent: 4218921 (1980-08-01), Oran et al.

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