PatentsDB

Gear transmission device and image forming apparatus including the same

US9501025B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9501025-B2
Application numberUS-201615047891-A
CountryUS
Kind codeB2
Filing dateFeb 19, 2016
Priority dateNov 2, 2012
Publication dateNov 22, 2016
Grant dateNov 22, 2016

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A gear transmission device includes a first external gear driven by a drive motor attached to a first side of a frame and a first internal gear driven by the first external gear. The first internal gear includes an outer cylinder portion, an end plate, an annular opening, and an inner cylinder portion including a shaft hole. The outer cylinder portion includes internal teeth formed on an inner circumferential surface thereof. The inner cylinder portion is formed concentrically inside the outer cylinder portion. The end plate connects the outer cylinder portion, the inner cylinder portion, and the shaft hole at one end in an axial direction. In a state in which the annular opening faces a second side of the frame opposite the first side thereof, the first external gear is inserted to the annular opening to mesh with the internal teeth of the outer cylinder portion.

First claim

Opening claim text (preview).

What is claimed is: 1. A power transmission device, comprising: a first frame; a drive motor including a first rotary shaft, attached to a first side of the first frame, the first rotary shaft including external teeth; a first driven gear near the first rotary shaft, the first driven gear including an annular concave portion having internal teeth on an inner circumferential surface of the annular concave portion, the first driven gear being configured to transmit a first drive…

Assignees

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Frequently asked questions

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What does patent US9501025B2 cover?
A gear transmission device includes a first external gear driven by a drive motor attached to a first side of a frame and a first internal gear driven by the first external gear. The first internal gear includes an outer cylinder portion, an end plate, an annular opening, and an inner cylinder portion including a shaft hole. The outer cylinder portion includes internal teeth formed on an inner …
Who is the assignee on this patent?
Ishida Masahiro, Shimizu Shinya, Matsuda Naoki, and 1 more
What technology area does this patent fall under?
Primary CPC classification G03G15/757. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Nov 22 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).