STRAIN WAVE GEARING DEVICE
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United States of America Patent
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Jun 23, 2016
app pub date -
Jun 19, 2014
filing date -
Jul 1, 2013
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Abstract
The externally toothed gear of the strain wave gear device is provided with first external teeth, which are capable of meshing with first internal teeth on the stationary side, and second external teeth, which are capable of meshing with second internal teeth on the driving side. The numbers of the first and second external teeth differ. The number of the first internal teeth is greater than the number of the first external teeth. The number of the second internal teeth is less than the number of the second external teeth. Using the externally toothed gear, which is provided with first and second external teeth that differ in number, a strain wave gear device with a low reduction ratio in which the velocity ratio is less than 30 can be achieved.
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