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. 18, 1989
Filed:
Apr. 05, 1988
Applicant:
Inventors:
Kenneth W Coffey, Tulsa, OK (US);
Toby E Smith, Broken Arrow, OK (US);
Assignee:
Rich-Mar Corporation, Tulsa, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310322 ; 310312 ; 310324 ; 310334 ;
Abstract
Sonic transducer and method for making the same. A sonic transducer of the type used in generating ultrasound frequencies for medical therapy includes a substantially planar circular piezoelectric crystal which is bonded to the rear surface of a circular metal diaphragm. The diaphragm front surface includes a substantially planar applicating face and an annular non-parallel surface surrounding the applicating face. The transducer may be excited to produce maximum ultrasound energy over a relatively broad frequency range.