Double fluid layer-type ultrasonic cleaning apparatus

Details Double fluid layer-type ultrasonic cleaning apparatus Double fluid layer-type ultrasonic cleaning apparatus

1993-10-04

1994-09-13

Stinson, Frankie L.

Cleaning and liquid contact with solids

Apparatus

With heating, cooling or heat exchange means

134184, 134108, B08B 310

Patent

active

053459580

ABSTRACT:
The present invention relates to a double fluid layer-type ultrasonic cleaning apparatus for cleaning such a workpiece as electronic element and pressed component by immersing it in a cleaning bath, wherein cleaning and removal of foreign substances adhered in spacings and blind holes of the workpiece are assured by storing a cleaning solution of upper layer having a lower specific gravity and containing a hydrocarbon solvent as a main component in an upper stock fluid area of the cleaning bath, and another of lower layer having a higher specific gravity and containing an inert solvent as a main component thereof in a lower stock fluid area of the cleaning bath so as to provide two fluid layers.

REFERENCES:
patent: 3011924 (1961-12-01), Rand
patent: 3021235 (1962-02-01), Schumacher
patent: 3094469 (1963-06-01), Strauss et al.
patent: 3923545 (1975-12-01), Healy
patent: 4367098 (1983-01-01), McCord

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