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:
Jul. 09, 2024
Filed:
Mar. 23, 2021
Thk Co., Ltd., Tokyo, JP;
THK CO., LTD., Tokyo, JP;
Abstract
A motion guide apparatus is provided which can prevent a ball from contacting an edge of a ball rolling groove of a track member when the ball transfers from a rolling surface of the inner peripheral side of a turn-around path (an inner peripheral-side component) to the track member. The motion guide apparatus includes: a track member () including a ball rolling groove (); and a moving member assembled to the track member () in such a manner as to be movable relative to the track member (). The moving member includes: a moving member body having a loaded ball rolling groove facing the ball rolling groove (), and a return path substantially parallel to the loaded ball rolling groove; and a lid member having a turn-around path. In cross section of the motion guide apparatus perpendicular to a length direction of the track member (), letting the radius of curvature of the ball rolling groove () be R, and letting the distance from a ball center (O) to a rolling surface () of the inner peripheral side of the turn-around path (an inner peripheral-side component ()) be r, R>r is set.