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:
Mar. 06, 2007
Filed:
Apr. 08, 2005
Yasunobu Hasegawa, Saitama, JP;
Yoshihiro Tahara, Saitama, JP;
Yasunobu Hasegawa, Saitama, JP;
Yoshihiro Tahara, Saitama, JP;
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Abstract
The invention is constructed such that, in an ultrasonic probe in which a peripheral side face of a piezoelectric plate is covered with a shielding case, and an acoustic matching layer is provided on an ultrasonic wave transmission reception face including the piezoelectric plate and the shielding case, there is provided a voltage proof material on a tip side of the shielding case including at least an aperture end face. Moreover, the piezoelectric plate may be a divided type ultrasonic probe which is divided into two by a shielding plate, and the voltage proof material is provided on the tip side of the shielding plate including the end face. The voltage proof material may be a polyimide tape. As a result, it is possible to provide an ultrasonic probe which has a shielding function, and in which destruction of the acoustic matching layer caused by the applied voltage is prevented. Thus, excellent voltage endurance is maintained.