Speed change gear device
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United States of America Patent
Stats
-
Oct 1, 2013
Grant Date -
Aug 8, 2013
app pub date -
Jul 22, 2011
filing date -
Jul 23, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A speed change gear device is provided with a housing, a first member supported rotatably about a predetermined rotational axis, a shaft member formed with an external gear, an annular member formed with an internal gear meshing with the external gear, and a transmission mechanism for transmitting a rotational component only of the annular member to the shaft member or a disc member arranged to be rotatable relative to the housing. The external gear differs from the internal gear in the number of teeth. Further, the first member is formed with a receiving hole that receives the annular member at a position where the center of the annular member is at a predetermined distance from the rotational axis. Then, the annular member is received in the receiving hole rotatably relative to the first member.
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