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. 31, 2015
Filed:
Jul. 11, 2011
Hiroshi Nakagawa, Ise, JP;
Takayoshi Fujii, Ise, JP;
Takashi Fukunaga, Ise, JP;
Sinfonia Technology Co., Ltd., Tokyo, JP;
Abstract
There is provided a movable iron core linear actuator, which includes a magnetic circuit (mc) which causes a moving element () to reciprocate. The magnetic circuit (mc) includes an iron core () constituting the moving element (), a stator core () including a facing portion () which faces the iron core (), a pair of permanent magnets () disposed in the facing portion () along a reciprocating direction and having inverted magnetic poles at their surfaces which face the iron core, and a coil () wound around the stator core (). Energization to coil () causes the moving element () to reciprocate. When the coil () is not energized, offset force (F) is applied to the moving element () by the magnetic flux produced by the permanent magnets ().