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. 27, 2012
Filed:
Aug. 22, 2006
Toshiyuki Aso, Tokyo, JP;
Shuhei Yamanaka, Tokyo, JP;
Toshiyuki Aso, Tokyo, JP;
Shuhei Yamanaka, Tokyo, JP;
THK Co., Ltd., Tokyo, JP;
Abstract
A compact linear motor is provided which is able to limit a rod, which linearly moves relatively to coils, from revolving. The linear motor comprises a rod () equipped with magnets (), coils () surrounding the rod (), and a housing () covering the coils (), and the rod () is made to linearly move relatively to the coils () by magnetic fields from the magnets () and current made to flow through the coils (). And the rod () comprises an outer circumferential surface on which spline grooves () are formed so as to run along an axial direction of the rod (). The housing () comprises a spline nut () that fits the spline grooves () and limits the rod () from revolving around an axis line thereof.