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:
Oct. 21, 2014
Filed:
Oct. 04, 2012
Yasuhiro Maehata, Tokyo, JP;
Katsuaki Miyawaki, Kanagawa, JP;
Hiromichi Matsuda, Kanagawa, JP;
Tetsuo Watanabe, Kanagawa, JP;
Nobuo Iwata, Kanagawa, JP;
Keisuke Shimizu, Tokyo, JP;
Yasuhiro Maehata, Tokyo, JP;
Katsuaki Miyawaki, Kanagawa, JP;
Hiromichi Matsuda, Kanagawa, JP;
Tetsuo Watanabe, Kanagawa, JP;
Nobuo Iwata, Kanagawa, JP;
Keisuke Shimizu, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A rotary body driver includes a driving source and a planetary gear transmission to receive a driving force from the driving source. The planetary gear transmission includes a sun gear rotatable by the driving force received from the driving source, a plurality of planet gears meshed with and surrounding the sun gear with an identical interval between the adjacent planet gears, a rotatable carrier to rotatably support the plurality of planet gears, an outer gear encircling and meshed with the plurality of planet gears, and an output shaft combined with and supporting the carrier. A rotary body shaft mounting a rotary body is connected to the output shaft of the planetary gear transmission to transmit the driving force received from the output shaft to the rotary body. The outer gear is made of resin and the output shaft and the carrier are made of metal.