Injection molding resin gear and method of manufacturing the same
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United States of America Patent
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Jan 2, 2018
Issued Date -
N/A
app pub date -
Oct 22, 2014
filing date -
Dec 24, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
An injection molding resin gear includes: a tooth portion having teeth formed on an outer peripheral portion thereof; a shaft supporting portion formed around a center of rotation; and a web that connects the tooth portion and the shaft supporting portion, wherein the web includes a concave and convex portion having a concave portion formed on a first surface and a convex portion formed on a second surface formed at a position corresponding to the concave portion, and one of the concave portion or the convex portion of the concave and convex portion includes a gate point, and the concave and convex portions include a thinned portion at radial end portion in a radial cross section passing through the center of rotation of the concave and convex portion.
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