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:
Aug. 23, 1977
Filed:
Nov. 25, 1975
Applicant:
Inventors:
Assignees:
Hitachi, Ltd., BOTH OF, JA;
Hitachi Medical Corporation, BOTH OF, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310313 ; 310335 ; 340-9 ; 340 / ;
Abstract
A transducer included in an ultrasonic source is a concave ultrasonic transducer made of a piezoelectric material. The concave ultrasonic transducer is shaped into such body of revolution that a section of the transducer forms a revolutionary arc surface consisting of two arcs. Owing to the shape, an ultrasonic source similar to a conventional ring type source is constructed.