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:
Dec. 09, 2008
Filed:
Feb. 08, 2006
Hisashi Kawamoto, Narashino, JP;
Takashi Nakano, Narashino, JP;
Toshiaki Mikuriya, Narashino, JP;
Akinori Kobayashi, Narashino, JP;
Hisashi Kawamoto, Narashino, JP;
Takashi Nakano, Narashino, JP;
Toshiaki Mikuriya, Narashino, JP;
Akinori Kobayashi, Narashino, JP;
Seiko Precision Inc., Chiba, JP;
Abstract
An electromagnetic actuator with a smaller size and an increased strength is provided. In the electromagnetic actuator, a first arm portion and a second arm portion that connect the magnetic poles of a stator extend to the outside of a rotor housing. A first coil and a second coil are wound around the extending portions. In other words, the first coil and the second coil are exposed to the outside of the rotor housing. Accordingly, compared with a case where the rotor housing also houses the first coil and the second coil, the width of the electromagnetic actuator can be reduced by the thickness of the rotor housing. Thus, the electromagnetic actuator can be made compact.