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. 13, 2009
Filed:
Sep. 26, 2007
Takeki Shirai, Tokyo, JP;
Shigeru Ebina, Tokyo, JP;
Shinji Izumi, Tokyo, JP;
Yuki Hayashi, Tokyo, JP;
Takeki Shirai, Tokyo, JP;
Shigeru Ebina, Tokyo, JP;
Shinji Izumi, Tokyo, JP;
Yuki Hayashi, Tokyo, JP;
THK Co., Ltd., Tokyo, JP;
Abstract
Provided is a linear guidance device in which a track groove () serving as an endless circulation path for balls () can be formed through cutting or grinding with high precision and with ease at low cost. The linear guidance device includes: a raceway rail () provided with a ball rolling groove () which is formed on each side surface thereof; and a movement block () formed in a channel configuration in which a base portion () and a pair of flange portions () are provided so that a guide groove () is formed, and including the track groove which are provided with the guide groove faced with the raceway rail (), in which the track groove includes: a load straight-line groove () formed in an inner surface of the flange portions; a non-load straight-line groove () formed in a concave corner portion of the guide groove which is bordered with the flange portions and the base portion or formed in the base portion so as to be faced with the raceway rail; a ball deflection groove () which communicatively couples the load straight-line groove and the non-load straight-line groove to each other so as to allow the balls to move therebetween.