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. 12, 2003
Filed:
Aug. 07, 2000
Naoko Azuma, Kawasaki, JP;
Akihisa Adachi, Kawasaki, JP;
Masahiko Hashimoto, Tokyo, JP;
Tooru Ninomiya, Yawata, JP;
Kenzo Ohji, Ikoma, JP;
Abstract
The present invention provides an ultrasonic transducer having uniform characteristics. Because the characteristics of a pair of ultrasonic transducer are equalized with each other, measuring accuracy of an ultrasonic flowmeter can be improved. Electrical connection from an electrode surface of a piezoelectric body to an external electrode is achieved not by soldering but by an electroconductive elastic body . As a result, variations of the frequency characteristics due to thermal load on the piezoelectric body can be reduced, and this makes it possible to obtain an ultrasonic transducer with uniform characteristics, and measuring accuracy of an ultrasonic flowmeter using a pair of the ultrasonic transducer can be improved.