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. 21, 2018
Filed:
Jun. 14, 2016
Hiroaki Takagi, Kanagawa, JP;
Kimiharu Yamazaki, Kanagawa, JP;
Naoyuki Suido, Kanagawa, JP;
Shogo Sakamoto, Kanagawa, JP;
Hiroaki Takagi, Kanagawa, JP;
Kimiharu Yamazaki, Kanagawa, JP;
Naoyuki Suido, Kanagawa, JP;
Shogo Sakamoto, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A drive transmission device includes a rotation shaft, a drive transmitter attached to the rotation shaft to slide in an axial direction and including an engaging portion extending in the axial direction, and a coil spring to bias the drive transmitter to one side in the axial direction, and a shaft-side drive transmitter disposed on the rotation shaft. The coil spring includes a sparse portion and a dense portion. The shaft-side drive transmitter engages the engaging portion to prevent the drive transmitter from disengaging from the rotation shaft. The coil spring and the engaging portion satisfy