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. 11, 2025
Filed:
Apr. 27, 2021
Won St Co., Ltd., Hwaseong-si, KR;
Hyeok Do Kwon, Siheung-si, KR;
Taek Won Lee, Seoul, KR;
Gi Dong Son, Incheon, KR;
Dong Hyup Nam, Siheung-si, KR;
WON ST CO., LTD., Hwaseong-si, KR;
Abstract
A ball spline having reinforcement bush parts includes a spline shaft having concave track grooves formed to extend along the longitudinal direction thereof; a nut part in which the spline shaft is inserted and movable along the longitudinal direction thereof; and a plurality of balls provided between the nut part and the spline shaft to circulate, wherein: the nut part includes a nut which is a hollow body where the spline shaft is inserted, and retainers which are hollow bodies which are provided at longitudinally opposite sides of the nut and into which the spline shaft is inserted; two spline parts and two reinforcement bush parts are provided at the nut part; some of the balls circulate and move between a track groove and a load track groove and along a no-load circulation part; and the remainder of the balls roll circulate and move along the reinforcement bush parts.