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:
Mar. 02, 2004
Filed:
Oct. 29, 2002
Applicant:
Inventors:
Takashi Kobayashi, Yamanashi-ken, JP;
Masaki Tohyama, Yamanashi-ken, JP;
Kenshi Aihara, Yamanashi-ken, JP;
Akira Nikaido, Tokyo, JP;
Kazumi Miyamoto, Yamanashi-ken, JP;
Naoki Miura, Yamanashi-ken, JP;
Assignee:
Citizen Electronics Co., Ltd., Yamanashi-ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02K 7/06 ;
U.S. Cl.
CPC ...
H02K 7/06 ;
Abstract
A cup-shaped yoke is axially movably provided in a cylindrical frame, and a cylindrical permanent magnet is securely provided in the yoke. A coil bobbin is cantilevered in the frame and inserted in a space between the yoke and the permanent magnet, and a driving coil is mounted on the coil bobbin. The yoke is held by a pair of coil springs for resiliently holding the yoke in the frame.