Worm wheel, worm reduction gear, and method for producing worm wheel
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United States of America Patent
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Nov 9, 2021
Grant Date -
Mar 25, 2021
app pub date -
Jan 26, 2017
filing date -
Feb 2, 2016
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Abstract
An inner wheel element (15a) is embedded in an outer wheel element (16a), such that a continuous range from an inner diameter side circumferential surface configuring an inner surface of a first annular concave part (22), through an outer circumferential surface of the inner wheel element (15a), to an inner diameter side circumferential surface configuring an inner surface of a second annular concave part (38) in a surface of the inner wheel element (15a) is covered over the entire circumference. Accordingly, a structure is achieved which easily secures a holding power of the synthetic resin outer wheel element with respect to the inner wheel element.
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