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. 28, 2017
Filed:
Feb. 09, 2016
Naoyuki Suido, Kanagawa, JP;
Keisuke Shimizu, Tokyo, JP;
Hiroaki Takagi, Kanagawa, JP;
Kimiharu Yamazaki, Kanagawa, JP;
Tadahiro Satoh, Kanagawa, JP;
Naoyuki Suido, Kanagawa, JP;
Keisuke Shimizu, Tokyo, JP;
Hiroaki Takagi, Kanagawa, JP;
Kimiharu Yamazaki, Kanagawa, JP;
Tadahiro Satoh, Kanagawa, JP;
RICOH COMPANY, LIMITED, Tokyo, JP;
Abstract
A rotary drive device includes a drive motor and drive transmission portion, which transmits a rotational drive force of the motor to a driven rotor and includes three or more drive transmission members. A high stiffness member is attached to a low-stiffness drive transmission member, which is one, lower in stiffness, of two of the drive transmission members, to increase stiffness of the low-stiffness drive transmission member. The two form a drive transmission point corresponding to a resonant point of a lowest resonance frequency among frequencies at a plurality of resonance points in frequency response characteristics derived from rotation information. One drive transmission point, which is on either a drive-transmission input side or output side, other than the drive transmission point corresponding to the resonant point of the lowest resonance frequency, of the low-stiffness drive transmission member is configured to transmit the rotational drive force through the high stiffness member.