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:
Nov. 10, 2015
Filed:
Oct. 16, 2013
Sii Crystal Technology Inc., Chiba, JP;
Takashi Kobayashi, Chiba, JP;
SII CRYSTAL TECHNOLOGY INC., Chiba, JP;
Abstract
A piezoelectric vibrating strip includes a pair of vibrating arm portions in parallel with a central axis therebetween, and a base portion integrally cantilevering base end portions of the pair of vibrating arm portions in a length direction. Each of the pair of vibrating arm portions has a first groove portion and a second groove portion in a main face, the first groove portion being placed closer to a leading end portion in the length direction of the vibrating arm portions and having a groove width along a width direction orthogonal to the length direction and a thickness direction of the vibrating arm portion. The second groove portion is closer to the base end portion than the first groove portion and has a groove width along the width direction. The groove width ratio of the second groove portion to the first groove portion is between 0.4 and 1.0.