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:
Aug. 23, 2016
Filed:
Oct. 19, 2012
Nsk Ltd., Shinagawa-ku, Tokyo, JP;
Daisuke Kuroiwa, Fukuoka, JP;
NSK Ltd., Tokyo, JP;
Abstract
A ball screw device is provided in which a dust-proof member can be simply attached to a nut. The ball screw device () is a ball screw device () in which a concave portion () is formed in an inner circumferential end portion of a nut () through which a screw shaft () passes and the concave portion () is provided with a dust-proof member (), wherein the dust-proof member () is formed of a cylindrical elastic member into which the screw shaft () is inserted and includes at least one protrusion () protruding in an outward diameter direction from an outer circumferential surface of the dust-proof member (), and the concave portion () has a groove shape to which the dust-proof member () is fitted and is provided with a locking portion () to which the protrusion () is locked.