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:
May. 21, 2002
Filed:
Mar. 29, 2000
Douglas L. Lewis, St. Paul Park, MN (US);
Scott Ecelberger, Laurel, MD (US);
Eilaz Babaev, Minnetonka, MN (US);
Robert J. Wojciechowski, Cottage Grove, MN (US);
Ashok Kumar, Cupertino, CA (US);
Jian Ruan, Maplewood, MN (US);
Manish Kochar, Lino Lakes, MN (US);
Other;
Abstract
A sonic transducer includes a transducer body and a drive element coupled to the transducer body to produce a sonic output in response to an applied electrical input. A sense element is coupled to the sonic drive element and is configured to provide an electrical feedback output related to the sonic output. The electrical feedback output is adapted to be used to control the applied electrical input to the sonic drive element so as to control the energy delivered to the working area or tip of the transducer.