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:
Nov. 10, 1987
Filed:
Jan. 28, 1987
Applicant:
Inventors:
Jiro Inoue, Nagaokakyo, JP;
Masaharu Kota, Nagaokakyo, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310324 ; 310322 ; 310327 ; 367180 ;
Abstract
An ultrasonic transducer comprises a diaphragm formed by a metal plate provided with a bulged portion in its center and a piezoelectric element bonded to the inner surface of the bulged portion thereby to make the diaphragm vibrate in a bending mode. A node line is present outside the bulged portion in vibration of the diaphragm, and the diaphragm is sandwiched by first and second elastic members along the node line. The first and second elastic members are held between a case and a base fixed thereto so that the diaphragm is elastically retained through the first and second elastic members.