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:
Jun. 14, 2016
Filed:
Feb. 14, 2011
Tatsuya Yamasaki, Iwata, JP;
Masaaki Eguchi, Iwata, JP;
Tatsuya Yamasaki, Iwata, JP;
Masaaki Eguchi, Iwata, JP;
NTN CORPORATION, Osaka, JP;
Abstract
A linear motion actuator has an output member that can be smoothly moved linearly even when lateral moment acts on the output member. A carrier () supporting planetary rollers () is axially immovable, while an outer ring member (), as the output member, is axially slidably fitted in the radially inner surface of a cylindrical portion () of a housing (), and is rotationally fixed to a driven member through keys (). Hard plating layers are formed on the radially outer surface of a rotary shaft (), the radially outer surfaces of the planetary rollers (), including helical grooves (), and the surface of a helical rib member () which is fixed to the radially inner surface of the outer ring member () forming a helical rib.