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:
Jun. 14, 2016
Filed:
May. 14, 2015
Hiroshi Yanagawa, Mie, JP;
Kazuo Hirose, Mie, JP;
Hiroaki Takagi, Tokyo, JP;
Junichi Ichikawa, Tokyo, JP;
Hiroshi Yanagawa, Mie, JP;
Kazuo Hirose, Mie, JP;
Hiroaki Takagi, Tokyo, JP;
Junichi Ichikawa, Tokyo, JP;
NTN CORPORATION, Osaka, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An image forming device includes a tripod type constant-velocity joint through which a rotary member shaft of a rotary member is connected to the drive shaft of a motor. The constant-velocity joint includes a pair of outer rings each having three axially extending track grooves in its inner periphery, and a tripod member having three protrusions formed on each of the axial ends thereof and axially slidably received in the corresponding track grooves. The outer rings and the tripod member are formed of synthetic resin. One of the outer rings and the tripod member are inseparably coupled to the drive shaft so that the other of the outer rings is always disconnected from the tripod member when the rotary member is pulled away from the motor.