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:
Oct. 29, 2024
Filed:
Feb. 21, 2020
Won St Co., Ltd., Seoul, KR;
Walmart Apollo, Llc, Bentonville, AR (US);
Taek Won Lee, Seoul, KR;
Hyeok Do Kwon, Seoul, KR;
Gi Dong Son, Incheon, KR;
Dong Hyup Nam, Siheung-si, KR;
William J Fosnight, Windham, NH (US);
Martin R Elliott, Bedford, NH (US);
WON ST CO., LTD., Seoul, KR;
WALMART APOLLO, LLC, Bentonville, AR (US);
Abstract
A ball spline with detour tracks includes spline shaft, nut part movable along a longitudinal direction of the spline shaft, and balls between the nut part and the spline shaft, wherein the nut part includes nut adapted to insert the spline shaft thereinto and retainers on longitudinal sides of the nut, the spline shaft includes tracks extended along the longitudinal direction, the nut includes load track grooves formed in longitudinal direction on inner peripheral surface into which the spline shaft is inserted and non-load circulating portions formed in the longitudinal direction, each retainer includes circulating grooves on the inner peripheral surface to face the load track groove and non-load circulating portion, the balls run between the tracks and the load track grooves, and each track includes track groove formed in longitudinal direction of the spline shaft and detour tracks whose longitudinal sides are connected to the track groove.