| Patent Number |
Title Of Patent |
Date Issued |
| 6059886 |
Method of ultrasonically cleaning workpiece |
May 9, 2000 |
| An ultrasonic cleaning tank with an ultrasonic vibrator mounted on its bottom is supplied with an aqueous cleaning solution which has been deaerated to a predetermined dissolved oxygen content ranging from 0.01 to 5 ppm. A workpiece to be ultrasonically cleaned is then immersed in the |
| 5186389 |
Spray tube ultrasonic washing apparatus |
February 16, 1993 |
| Disclosed is a spray type ultrasonic washing apparatus using a coaxial nozzle structure which is composed of inner and outer hollow frustums for supplying deaerated washing liquid in the annular passage delimited by the outer and inner frustums and supplying nondeaerated washing liquid i |
| 4907611 |
Ultrasonic washing apparatus |
March 13, 1990 |
| Disclosed is an improvement of ultrasonic washing apparatus comprising at least one washing vessel, an ultrasonic vibrator for radiating ultrasonic wave into the washing bath, an oscillator for operating the ultrasonic vibrator and degassing means for removing dissolved air and other gas |
| 4865060 |
Ultrasonic cleaning system |
September 12, 1989 |
| Disclosed is an improvement of ultrasonic cleaning system equipped with degassing means or boiling vessel to remove gases from cleaning liquid for activating the formation of cavitation in the cleaning bath. The ultrasonic cleaning system is improved according to the present invention |
