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. 26, 2009
Filed:
Nov. 30, 2005
Kenji Muramatsu, Nagano, JP;
Hiroshi Sugihara, Nagano, JP;
Kiyotsugu Takasawa, Nagano, JP;
Mitsuo Yokozawa, Nagano, JP;
Kenji Muramatsu, Nagano, JP;
Hiroshi Sugihara, Nagano, JP;
Kiyotsugu Takasawa, Nagano, JP;
Mitsuo Yokozawa, Nagano, JP;
Nidec Sankyo Corporation, , JP;
Abstract
A linear actuator may include a fixed body having a coil wound around in a ring-shaped manner and a movable body. The movable body may include a first movable body side yoke which is disposed on the inner side of the coil and a pair of magnets which is laminated on both sides in an axial direction of the first movable body side yoke such that the same polarities of the magnets face the first movable body side yoke. The movable body may be driven in the axial direction. The linear actuator may be applied to a valve device and a pump device.