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:
Jul. 28, 2009
Filed:
Jun. 17, 2004
Applicant:
Mitsuru Sekiya, Odawara, JP;
Inventor:
Mitsuru Sekiya, Odawara, JP;
Assignee:
Mikuni Corp., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/14 (2006.01); G01B 7/30 (2006.01); G01R 33/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
The length in the direction of movement of a magnet is effectively used for position detection without using a gap of a stator, where the magnet moves, as a magnetic path. According to a proportion of the slider (), having a magnet (), that enters into a region where the slider is movable with a predetermined gap maintained between the stator () made from a magnetic body, a magnetism sensor () provided at a stator () detects the position of a slider (). A magnetic flux leakage prevention member () prevents leakage of magnetic flux caused by that portion of the magnet () that has not entered in the region.