Simple planetary reduction gear
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United States of America Patent
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Jul 12, 2016
Grant Date -
Aug 13, 2015
app pub date -
Apr 20, 2015
filing date -
Nov 5, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A simple planetary reduction gear includes a sun gear, a planetary gear which revolves around the sun gear and is supported by a carrier, and an internal gear with which the planetary gear internally meshes, and is used in a vertically installed state. The sun gear includes a shaft portion protruding to a load side (lower side) coaxially with a shaft center O1 of the sun gear, and the shaft portion is supported by a ball bearing which is disposed between the outer circumference of the shaft portion and the inner circumference of the carrier. Accordingly, high maintainability is secured and a problem of generation of heat is prevented.
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