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. 02, 2011
Filed:
Oct. 31, 2006
Hiroaki Mochizuki, Tokyo, JP;
Tomozumi Murata, Tokyo, JP;
Takashi Sakuyama, Tokyo, JP;
THK Co., Ltd., Tokyo, JP;
Abstract
Provided is a motion guide device having a scooping portion that is not damaged even when a moving member is moved at high speed. When seen in an axial direction of a track shaft, a direction change pathis inclined relative to a contact angle line L(line connecting a center C of a balland a bottom Pof a ball rolling groove). The direction change pathincluding a scooping portionhas a cross section of Gothic arch groove shape formed of two arcs Rin such a manner that the ballis in contact with the direction change pathat two points. The direction change pathis twisted in such a manner that a locusof the top of the Gothic arch groove shape approaches the contact angle line Lat the scooping portion