Planetary Gear Set with Improved Performance and a Method of Producing a Ring Gear
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United States of America Patent
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Issued Date -
Jan 22, 2015
app pub date -
Jul 16, 2013
filing date -
Jul 16, 2013
priority date (Note) -
Abandoned
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Abstract
An improved planetary gear set that includes a sun gear, planet gears, and a ring gear. The ring gear is constructed to radially deform under an operating load. Therefore, the gear set is constructed such that the base pitches of the sun gear, planet gears, and the deformed ring gear under the operating load are equalized. The ring gear is further constructed with tooth profiles designed to accommodate the deflection under the operating load. The tooth profile of the ring gear is designed using an operating pitch diameter instead of a nominal pitch diameter to accommodate the deflection.
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