Robot and gear device
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United States of America Patent
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Oct 22, 2019
Grant Date -
Feb 1, 2018
app pub date -
Jul 25, 2017
filing date -
Jul 29, 2016
priority date (Note) -
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Abstract
A robot includes a first member, a second member provided to be capable of turning with respect to the first member, and a gear device configured to transmit a driving force from one side to the other side of the first member and the second member. The gear device includes internal teeth and external teeth provided halfway in a transmission path of the driving force and configured to mesh with each other and lubricant disposed between the internal teeth and the external teeth. An average grain size of a constituent material of the external teeth is smaller than an average grain size of a constituent material of the internal teeth.
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