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:
Dec. 04, 1984
Filed:
Sep. 24, 1981
Applicant:
Inventors:
Masao Kodera, Okazaki, JP;
Sigeyuki Akita, Okazaki, JP;
Assignee:
Nippon Soken, Inc., Nishio, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ; H04R / ;
U.S. Cl.
CPC ...
367140 ; 310321 ; 310322 ; 179140 ; 1791 / ;
Abstract
An ultrasonic wave conversion apparatus comprises electrodes, a support member for supporting the electrodes, a vibrator secured to the support member by a securing member, and a moving diaphragm fixed to the vibrator by a fixing member. The surface of portions of the electrodes, the vibrator, the moving diaphragm and the fixing member are coated with an insulating film of a predetermined thickness. The coating with this insulating film provides the apparatus with an excellent insulating and anticorrosive property and further an excellent damping characteristic for the vibration of the vibrating members of the apparatus.