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:
May. 21, 2002
Filed:
Oct. 12, 1999
Shizuo Kashiwagi, Gunma, JP;
NSK Ltd., Tokyo, JP;
Abstract
A linear guide bearing device , which serves as the above-mentioned linear guide device, comprises a guide rail and a slider . The guide rail includes a plurality of rolling element rolling grooves . The slider includes a plurality of load rolling element rolling grooves and a plurality of curved passages . The rolling grooves and cooperate together in forming their associated load rolling passages respectively. In an area ranging over each set of the rolling element rolling passage and curved passage there is formed a crowning in a direction where the rolling groove moves away from its associated rolling groove . In the end portion of each curved passage on the rolling groove side, there is formed a tongue portion . The crowning is structured such that, between the load rolling element that belongs to the rolling elements respectively rolling with a load within their associated rolling element rolling passage and is situated in the end portion of the present rolling element rolling passage and the tongue portion of the curved passage , there can be present only one no-load rolling element which rolls with no load.