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:
Apr. 06, 2010
Filed:
May. 18, 2009
Hiroyuki Hirano, Inba-gun, JP;
Takaaki Asada, Moriyama, JP;
Mio Furuya, Muko, JP;
Junichi Nishie, Nagaokakyo, JP;
Hiroyuki Hirano, Inba-gun, JP;
Takaaki Asada, Moriyama, JP;
Mio Furuya, Muko, JP;
Junichi Nishie, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A piezoelectric device is attached to an inner bottom surface of the outer case having a tubular shape including a bottom, and an inner case is disposed within the outer case. In an ultrasonic vibration acting surface of the inner case that is arranged to face the bottom surface of the outer case, a mass of the inner case is arranged to restrain vibration of the outer case, which is generated by the piezoelectric device. A first cutout is provided in a portion of the ultrasonic vibration acting surface and arranged to face the piezoelectric device so as to flatten an ultrasonic beam generated by vibrations of the piezoelectric device and the outer case. Second cutouts are provided at locations on the ultrasonic vibration acting surface spaced away from the first cutout in a line symmetrical relationship with a long axis of the first cutout defining a symmetrical axis.