Speed reducer
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United States of America Patent
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Nov 8, 2022
Grant Date -
N/A
app pub date -
Dec 28, 2020
filing date -
Jun 28, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A speed reducer includes a reduction mechanism, which includes an internal gear and an external gear meshing with the internal gear, and a first member, and transmits rotating motion decelerated by the reduction mechanism to a driven member. The speed reducer includes a protection member disposed between the first member and the driven member. The first member is formed of a material having specific gravity lower than at least one of the internal gear and the external gear and hardness lower than the driven member. The protection member is formed of a material having hardness higher than the first member.
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