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:
Jan. 25, 2011
Filed:
Sep. 12, 2007
Seiji Tada, Kashiba, JP;
Shigeo Kamamoto, Kashiwara, JP;
Seiji Tada, Kashiba, JP;
Shigeo Kamamoto, Kashiwara, JP;
JTEKT Corporation, Osaka, JP;
Abstract
A power transmission chain includes a plurality of links aligned in a chain travel direction and a coupling member that includes a first power transmission member and a second power transmission member. The first power transmission member includes an opposing portion that opposes the corresponding second power transmission member and contacts the corresponding second power transmission member on a contact portion that undergoes displacement in association with a change of a bending angle between corresponding links in a contact state including at least one of rolling contact and sliding contact. The opposing portion includes an arc-shaped portion having a predetermined radius of curvature and a rate-of-change increasing portion. The arc-shaped portion includes a portion that forms the contact portion when the bending angle is equal to or greater than zero and equal to or smaller than a predetermined boundary angle.