Drive transmission device and image forming apparatus including same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10054896
APP PUB NO 20170010576A1
SERIAL NO

15181854

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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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

description='In-line Formulae' end='lead'C>A−B description='In-line Formulae' end='tail'

    where A represents a length of the coil spring in a state in which the shaft-side drive transmitter retains the drive transmitter, B represents a compressed height of the coil spring, and C represents a length of the coil spring in the axial direction.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
RICOH COMPANY LTDTOKYO 143-8555

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sakamoto, Shogo Kanagawa, JP 20 99
Suido, Naoyuki Kanagawa, JP 8 46
Takagi, Hiroaki Kanagawa, JP 59 468
Yamazaki, Kimiharu Kanagawa, JP 35 207

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