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, 2015
Filed:
Mar. 08, 2013
Applicant:
Nidec Seimitsu Corporation, Ueda-shi, Nagano-ken, JP;
Inventors:
Keisuke Furuichi, Ueda, JP;
Tomohiro Akanuma, Ueda, JP;
Assignee:
Nidec Seimitsu Corporation, Ueda-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01); H04M 19/04 (2006.01); H04R 1/00 (2006.01); H02K 41/00 (2006.01);
U.S. Cl.
CPC ...
H04R 1/00 (2013.01); H04M 19/047 (2013.01);
Abstract
A vibration generator includes a coil arranged to generate magnetic fields, a ring-shaped yoke arranged to amplify an electromagnetic force generated by the magnetic fields in cooperation with the coil, a vibrating body arranged radially inward of the coil to move in a thrust direction, a ring-shaped magnet arranged in an outer peripheral portion of the vibrating body and opposed to the coil, and a spring arranged to support the vibrating body on at least one side of the vibrating body in thrust-direction.