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:
Jan. 17, 2012
Filed:
Aug. 29, 2006
Yoshihiro Kimura, Tokyo, JP;
Toshiyuki Aso, Tokyo, JP;
Yoshinobu Tanaka, Tokyo, JP;
Hidekazu Michioka, Tokyo, JP;
Makoto Iizumi, Tokyo, JP;
Yoshihiro Kimura, Tokyo, JP;
Toshiyuki Aso, Tokyo, JP;
Yoshinobu Tanaka, Tokyo, JP;
Hidekazu Michioka, Tokyo, JP;
Makoto Iizumi, Tokyo, JP;
THK Co., Ltd., Tokyo, JP;
Abstract
Disclosed is a micro actuator capable of being formed in compact as a whole, such as 10 mm in diameter by diminishing a difference between a stroke distance of a moving member and an overall length, and by reducing a sectional area taken in a direction orthogonal to a stroke direction. The micro actuator includes: a spline shaft formed as a cylinder with a hollow part and having an axially extending slit opening; a spline nut fit-engaged with the spline shaft and axially guiding the spline shaft; a pair of end caps fixed to openings at both ends of the spline shaft; a magnet rod supported at both ends within the hollow part of the spline shaft by the end caps; and a forcer loosely fit-engaged with a periphery of the magnet rod within the hollow part of the spline shaft to constitute a linear motor together with the magnet rod and connected with the spline nut through the slit opening.