04375991 is referenced by 23 patents and cites 15 patents.

An ultrasonic cleaning apparatus which is configured for transportation to an object positioned for use for in situ cleaning and a method for accomplishing the cleaning. In one embodiment, the present invention provides a substantially planar transducer array which can be employed to clean biofouling from heat exchangers or other devices that are disposed in a contaminated liquid environment. Sufficient levels of power can be generated so that the liquid medium in which the cleaning apparatus is disposed can be caused to undergo cavitation to effect the desired cleaning action. Through the use of various types of instrumentation, areas which need to be cleaned as well as the effectiveness of cleaning and the operating parameters of the apparatus can be determined. The transducers are oriented so that they radiate in alternate directions to produce bi-directional radiation and are energized by a pulsating power input.

Title
Ultrasonic cleaning method and apparatus
Application Number
963417
Publication Number
4375991
Application Date
January 12, 1981
Publication Date
March 8, 1983
Inventor
Freeman K Hill
Fulton
MD, US
Samuel L Sachs
Columbia
MD, US
Agent
Leonard W Pojunas
Samuel L Sachs
Robert E Archibald
Assignee
The Johns Hopkins University
MD, US
IPC
B08B 3/12
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