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:
Feb. 05, 2008
Filed:
Sep. 10, 2002
Kouichi Tanabe, Kanagawa, JP;
Takayuki Miyagawa, Kanagawa, JP;
Masato Taniguchi, Kanagawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
An endless belt () to be provided on a driven pulley () and a pulley rotation support apparatus for supporting the driven pulley (). In the pulley rotation support apparatus, there is used a three-point-contact-type or four-point-contact-type radial ball bearing (). An offset quantity δ, which is an axial-direction distance between the center α of a radial load applied from the endless belt () to the driven pulley () and the center position β of the radial ball bearing (), is set 40% or less of the pitch circle diameter of the radial ball bearing (). The radial clearance of this radial ball bearing () is set 0.2% or less of the above pitch circle diameter.