Worm wheel, power steering apparatus including the worm wheel, and method of forming the worm wheel
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United States of America Patent
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Jan 29, 2013
Grant Date -
Jun 23, 2011
app pub date -
Dec 17, 2010
filing date -
Dec 21, 2009
priority date (Note) -
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Abstract
A worm wheel including an annular worm wheel main body formed from a resin material; teeth on an outer periphery of the worm wheel main body in a circumferential direction of the worm wheel main body a; a first region on respective tooth flanks of the teeth and offset from a mid-position of a whole depth of the respective teeth in a radially outward direction of the worm wheel main body; a first region; and a second region.
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