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:
May. 19, 2015
Filed:
Oct. 30, 2012
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Takumi Ariji, Saitama, JP;
Takehiro Takahashi, Saitama, JP;
NIHON DEMPA KOGYO CO., LTD., Tokyo, JP;
Abstract
A piezoelectric vibrating piece includes an excitation unit in a rectangular shape, a framing portion, a connecting portion, and a protrusion. The excitation unit includes a pair of excitation electrodes on the pair of principal surfaces, a first side that extends in a first direction, and a second side that extends in a second direction. The second side is longer than the first side. The second direction is perpendicular to the first direction. The connecting portion connects the first side of the excitation unit to the framing portion. The connecting portion is thinner than the framing portion. The protrusion protrudes in the thickness direction in at least one of the connecting portion and a region between the connecting portion and the excitation electrode. The length of the protrusion in the first direction is equal to or longer than a length of the connecting portion in the first direction.