Contactless pellet fabrication

Details Contactless pellet fabrication Contactless pellet fabrication

1981-10-26

1984-01-10

Beck, Shrive P.

Coating processes

Electrical product produced

Welding electrode

65213, 427 6, 427346, 427421, 427426, 118 50, 118 501, 118 57, 118 62, 118300, 118500, B05D 300, B05D 100

Patent

active

044253761

ABSTRACT:
A small object (12, FIG. 2) is coated by holding it in the pressure well (20) of an acoustic standing wave pattern, and then applying a mist of liquid coating material (42) at low velocity into the pressure well. The pressure gradient within the well forces the mist particles to be pushed against the object. A lower frequency acoustic wave (for oscillator 28, FIG. 4) also can be applied to the coated object, to vibrate it so as to evenly distribute the coated material. The same lower frequency vibrations can be applied to an object in the shape of a hollow sphere, to center the inner and outer surfaces of the sphere while it remains suspended.

REFERENCES:
patent: 2833241 (1958-05-01), Crowley et al.
patent: 3365315 (1968-01-01), Beck et al.
patent: 3640767 (1972-02-01), Fulton et al.
patent: 3882732 (1975-05-01), Fletcher et al.
patent: 4017290 (1977-04-01), Budrick et al.
patent: 4052181 (1977-10-01), Fletcher
patent: 4218921 (1980-08-01), Oran et al.
patent: 4257799 (1981-03-01), Rosencwaig et al.
patent: 4290384 (1981-09-01), Aussehnitt
J. E. Shelby, "Development of Glasses for application as Laser Fusion Targets", Sandia Laboratories, SAND 76-8325, Jan. 1977.
J. P. Reedy, "Selection and Measurement of Microsperes Laser Targets Based on Refraction", Journal of Applied Physics, v. 47, No. 61, Jun. 1976, p. 2503.

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