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:
Sep. 20, 2011
Filed:
Dec. 13, 2006
Applicants:
Minoru Ueda, Tokyo, JP;
Shoichi Kaneda, Tokyo, JP;
Kenji Ueno, Tokyo, JP;
Inventors:
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 7/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A magnetic circuit unit includes a pole piece, a magnet, and a yoke and a suspension made of a magnetic material. A magnetic gap is formed between an inner circumferential side surface of the suspension and a circumference of the pole piece. Accordingly, it is possible to allow the magnet in the magnetic circuit unit to be thinly constructed. In addition, it is possible to implement a multi-function vibration actuator having a thin structure and capable of obtaining a sufficiently sensible vibration.