Multi-frequency ultrasonic cleaning method and apparatus

Details Multi-frequency ultrasonic cleaning method and apparatus Multi-frequency ultrasonic cleaning method and apparatus

1989-11-13

1991-12-31

Pal, Asok

Cleaning and liquid contact with solids

Processes

Including application of electrical radiant or wave energy...

134 251, 134 254, 134184, 346 11, B08B 700

Patent

active

050768549

ABSTRACT:
When output signals of different multi-frequencies are supplied to one vibrator every short time interval, ultrasonic waves generating from the vibrator having continuing frequencies in which frequencies between separated resonance frequencies are supplemented. Therefore, the cleaning effect is improved by the ultrasonic waves.

REFERENCES:
patent: 3651352 (1972-03-01), Puskas
patent: 3928063 (1975-12-01), King, Jr. et al.
patent: 4120699 (1978-10-01), Kennedy, Jr. et al.
patent: 4391672 (1983-07-01), Lehtinen
patent: 4563688 (1986-01-01), Braun
patent: 4595419 (1986-06-01), Patenarde
patent: 4826538 (1989-05-01), Sanders et al.

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