GEAR TRANSMISSION DEVICE
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United States of America Patent
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Issued Date -
Jun 11, 2020
app pub date -
Aug 31, 2017
filing date -
Mar 28, 2017
priority date (Note) -
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Abstract
Provided is a gear transmission device that can suppress backlash favorably even in the case of extended use. The gear transmission device includes a first gear having a plurality of first tooth portions with a tooth thickness that increases progressively toward the outer end side, a second gear having a plurality of second tooth portions with a tooth thickness that decreases progressively toward the outer end side, and an urging portion configured to apply an urging force to the first gear in the direction along the rational axis in such a manner that the tooth surface of the first tapered tooth area is placed in abutment against the tooth surface of the second tapered tooth area.
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