Heating – Processes of heating or heater operation
Patent
1978-10-06
1981-08-18
Camby, John J.
Heating
Processes of heating or heater operation
181 05, 248 1, 414787, 432 11, 432121, 432266, F24J 300
Patent
active
042844037
ABSTRACT:
Objects are levitated in a sound system substantially free of reverberation and reflection by positioning a small reflector in the path of sound waves. Interference between the primary waves and reflected waves creates a localized zone of minimized energy closely adjacent to the reflector in which an object may be stably levitated. The energy well thus produced is not dependent upon distance from the sound source, and the levitated object may be moved in any direction by moving the reflector. A plurality of reflectors may be employed to manipulate and combine levitated materials, and improvements in the processing of levitated objects are also achieved.
REFERENCES:
patent: 3164022 (1965-01-01), Ensley
patent: 3232120 (1966-02-01), Ensley
patent: 3882732 (1975-05-01), Fletcher
Whymark, "Acoustic Field Positioning for Containerless Processing," Nov. 1975.
Wang et al., "Arrangement for Producing Rotational Effects on Acoustical Suspended or Positioned Samples," Jul. 24, 1975.
Elleman et al., "Acoustic-Energy Shaping of Meltable Metals," Jan. 1977.
Whymark et al., "Acoustic Levitation Materials Processing System," Jan. 1979.
Camby John J.
Intersonics Incorporated
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