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:
Feb. 28, 2023
Filed:
Apr. 29, 2021
Applicant:
Seiko Epson Corporation, Toyko, JP;
Inventors:
Seiichiro Ogura, Minowa, JP;
Keiichi Yamaguchi, Ina, JP;
Masahiro Oshio, Shiojiri, JP;
Takashi Yamazaki, Shiojiri, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 19/5607 (2012.01); G01C 19/5621 (2012.01); H03H 9/21 (2006.01); H03H 3/02 (2006.01); H03H 9/05 (2006.01); H03H 3/04 (2006.01); H03H 9/10 (2006.01);
U.S. Cl.
CPC ...
H03H 9/21 (2013.01); G01C 19/5607 (2013.01); G01C 19/5621 (2013.01); H03H 3/02 (2013.01); H03H 3/04 (2013.01); H03H 9/0533 (2013.01); H03H 9/0547 (2013.01); H03H 9/0595 (2013.01); H03H 9/1014 (2013.01); H03H 2003/026 (2013.01); H03H 2003/0492 (2013.01);
Abstract
A vibration element includes a base and a vibrating arm extending from the base. The vibrating arm includes an arm positioned between the base and a weight. A weight film is disposed on the weight. The weight has a first principal surface and a second principal surface in a front and back relationship with respect to a center plane of the arm. A center of gravity of the weight is located between the first principal surface and the center plane of the arm. A center of gravity of the weight film is located between the second principal surface and the center plane of the arm.