Invention Grant
- Patent Title: Piezoelectric vibrating pieces having progressively narrowed vibrating arms
- Patent Title (中): 压电振动片具有逐渐变窄的振动臂
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Application No.: US12580159Application Date: 2009-10-15
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Publication No.: US07973458B2Publication Date: 2011-07-05
- Inventor: Yu Iwai
- Applicant: Yu Iwai
- Applicant Address: JP Tokyo
- Assignee: Nihon Dempa Kogyo Co., Ltd.
- Current Assignee: Nihon Dempa Kogyo Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Klarquist Sparkman, LLP
- Priority: JP2008-267806 20081016
- Main IPC: H03H9/19
- IPC: H03H9/19 ; H03H9/21
Abstract:
An exemplary piezoelectric vibrating piece comprises a base formed of a piezoelectric material; and a pair of vibrating arms extending from one end of the base in a designated direction; wherein the vibrating arm comprises an arm portion in which only the inner side slopes as it becomes narrower to the distal end and a hammer-head portion that is formed wider than the arm portion at the distal end of the vibrating arms.
Public/Granted literature
- US20100096953A1 PIEZOELECTRIC VIBRATING PIECES AND PIEZOELECTRIC DEVICES COMPRISING SAME Public/Granted day:2010-04-22
Information query
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