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:
Jul. 24, 2012
Filed:
Apr. 07, 2009
Junya Takigawa, Tokyo, JP;
Takuro Kamiya, Kanagawa, JP;
Hideaki Sugata, Kanagawa, JP;
Yoshimi Asayama, Mie, JP;
Junya Takigawa, Tokyo, JP;
Takuro Kamiya, Kanagawa, JP;
Hideaki Sugata, Kanagawa, JP;
Yoshimi Asayama, Mie, JP;
Ricoh Company, Limited, Tokyo, JP;
NTN Corporation, Osaka, JP;
Abstract
A coupling unit includes two constant velocity joints arranged in series in the shaft direction. The coupling unit couples a driven shaft and a drive shaft. Each constant velocity joint includes a ball non-retaining member and a ball retaining member. The ball non-retaining member has an annular space with one opened end and a plurality of track grooves extending in the shaft direction on an external wall surface of the annular space at a constant interval in a circumferential direction. The ball retaining member has a portion that engages with the annular space of the ball non-retaining member, and that retains a ball that slides along each of the track grooves formed in the ball non-retaining member.