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. 05, 2020
Filed:
Feb. 12, 2018
Applicant:
Seiko Instruments Inc., Chiba-shi, Chiba, JP;
Inventors:
Akihiro Iino, Chiba, JP;
Masao Kasuga, Chiba, JP;
Assignee:
SEIKO INSTRUMENTS INC., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G04B 47/00 (2006.01); H02K 7/075 (2006.01); H02K 7/06 (2006.01); B06B 1/16 (2006.01); H02K 5/167 (2006.01); H02K 1/27 (2006.01); H02K 1/28 (2006.01); H02K 7/08 (2006.01);
U.S. Cl.
CPC ...
H02K 7/075 (2013.01); B06B 1/16 (2013.01); G04B 47/00 (2013.01); H02K 1/2793 (2013.01); H02K 1/28 (2013.01); H02K 5/1677 (2013.01); H02K 7/063 (2013.01); H02K 7/086 (2013.01); H02K 2205/03 (2013.01);
Abstract
A vibration generation device includes a rotor rotatable about a rotation axis, the rotor including a weight having a center of gravity that is eccentric with respect to the rotation axis. A shaft is inserted into the rotor and rotatably supports the rotor. A restriction part is disposed further inward than the weight in a radial direction, the restriction part being attached to one end of the shaft for restricting movement of the rotor in an axial direction.