Speed reduction or speed increasing apparatus
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United States of America Patent
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Jul 28, 2020
Grant Date -
Feb 15, 2018
app pub date -
Mar 2, 2016
filing date -
Mar 2, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a speed reduction or speed increasing apparatus where the rotational stiffness can be increased, including a housing, a first crown gear, a support unit placed radially outward of the first crown gear to support the first crown gear to be capable of wave motion and incapable of rotation with respect to the housing, a second crown gear configured to be rotatable with respect to the housing, the second crown gear having a different number of teeth from the first crown gear, the second crown gear facing the first crown gear, and a cam unit configured to incline the first crown gear with respect to the second crown gear in such a manner that the first crown gear engages with the second crown gear, and to cause the first crown gear to undergo wave motion in such a manner that the location of contact moves.
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