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:
Apr. 05, 1994
Filed:
Sep. 24, 1992
Shinichi Kasuga, Gunma, JP;
NSK Ltd., Tokyo, JP;
Abstract
There is disclosed a ball screw integrated type linear movement guiding unit which achieves a stable, smooth operability, and can meet with a high-load and high-rigidity application. Each of ball return passageways which respectively provide ball-circulating passageways of a ball screw system and a linear movement guiding system in the unit is constituted by an axial through hole much larger in diameter than a ball, and a cylindrical member of a synthetic resin which has an inner diameter generally equal to the diameter of the ball and is press-fitted in the through hole. With this construction, the rolling of the balls is effected smoothly. Further, even if the length of a nut is increased to meet with a high-load and high-rigidity use, the ball return passageway can be easily formed.