The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 1999
Filed:
Apr. 22, 1997
Peter J Puskas, Freeport, IL (US);
David Arata, Freeport, IL (US);
Ultrasonic Power Corporation, Freeport, IL (US);
Abstract
A generator for driving an ultrasonic transducer for use in ultrasonic cleaning. The generator is capable of maintaining substantially constant real output to a load while the output frequency of the generator is square wave frequency modulated about a wide bandwidth. Thus, the generator is capable of maintaining substantially constant real output to the load even if the output frequency is modulated substantially away from the load's resonant frequency. The square wave modulation of the output frequency causes improved cavitation of semi-aqueous cleaning solutions used in the load, and thus improves the cleaning action of the ultrasonic transducer.