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. 07, 2017
Filed:
Jun. 08, 2012
Shinji Oishi, Iwata, JP;
Akio Kato, Iwata, JP;
Takahiro Yamashita, Iwata, JP;
Katsufumi Abe, Iwata, JP;
Shinji Oishi, Iwata, JP;
Akio Kato, Iwata, JP;
Takahiro Yamashita, Iwata, JP;
Katsufumi Abe, Iwata, JP;
NTN CORPORATION, Osaka, JP;
Abstract
An object of the present invention is to provide a chain guide superior in silence, which includes: a guide base extending in a traveling direction of a chain; a plurality of roller shafts attached to the guide base at an interval along the traveling direction of the chain; and rollers each rotatably supported by one of the roller shafts. The roller has a cylindrical outer circumferential surface for guiding the chain. The outer circumferential surface of the roller has a cylindricity not greater than 20 μm.