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:
Jun. 25, 2013
Filed:
Oct. 08, 2010
Yoshiharu Katano, Anjo, JP;
Yousuke Yamagami, Obu, JP;
Motohiko Ueda, Okazaki, JP;
Yuichiro Okuda, Toyoake, JP;
Yasuhiro Takeuchi, Nagoya, JP;
Haruo Kamiya, Chiryu, JP;
Yoshiharu Katano, Anjo, JP;
Yousuke Yamagami, Obu, JP;
Motohiko Ueda, Okazaki, JP;
Yuichiro Okuda, Toyoake, JP;
Yasuhiro Takeuchi, Nagoya, JP;
Haruo Kamiya, Chiryu, JP;
DENSO CORPORATION, Kariya, JP;
Nippon Soken, Inc., Nishio, JP;
Abstract
When a pulley and an armature are coupled with each other, first and second permanent magnets place the movable member at a location where a magnetic resistance of an attracting magnetic circuit, which generates an attracting magnetic force to couple between the pulley and the armature, is reduced. In contrast, when the pulley and the armature are decoupled from each other, the movable member is placed at a location where the magnetic resistance of the attracting magnetic circuit is increased, and a magnetic resistance of a non-attracting magnetic circuit is reduced. Thereby, a coupled state or a decoupled state of the pulley and the armature can be maintained without an erroneous operation.