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:
Aug. 18, 2015
Filed:
Feb. 16, 2012
Hideo Yoshizawa, Kanagawa, JP;
Kiyonori Tsuda, Kanagawa, JP;
Takuzi Yoneda, Tokyo, JP;
Yutaka Takahashi, Kanagawa, JP;
Emi Kita, Kanagawa, JP;
Yuki Oshikawa, Kanagawa, JP;
Kohichi Utsunomiya, Kanagawa, JP;
Hideo Yoshizawa, Kanagawa, JP;
Kiyonori Tsuda, Kanagawa, JP;
Takuzi Yoneda, Tokyo, JP;
Yutaka Takahashi, Kanagawa, JP;
Emi Kita, Kanagawa, JP;
Yuki Oshikawa, Kanagawa, JP;
Kohichi Utsunomiya, Kanagawa, JP;
RICOH COMPANY, LIMITED, Tokyo, JP;
Abstract
A driving force transmission mechanism includes a connection for integrally rotating a driving shaft on the driving source side and a driven shaft of a rotary member. The connection includes a tubular boss portion; and a fitting shaft portion fitted into the tubular boss portion. An inner shaft portion is provided in a projecting manner from bottom center of the tubular boss portion toward inside the tubular boss portion. An inner recessed portion into which the inner shaft portion fits is provided in center of a leading edge plane for fitting of the fitting shaft portion. Micro gaps are provided between an inner surface of the tubular boss portion and an outer surface of the fitting shaft portion and between an inner surface of the inner recessed portion and an outer surface of the inner shaft portion.