Wave washer, rotary shaft supporting device including the wave washer, and electric motor including the rotary shaft supporting device
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United States of America Patent
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Apr 7, 2015
Grant Date -
Jan 30, 2014
app pub date -
Jul 19, 2013
filing date -
Jul 27, 2012
priority date (Note) -
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Abstract
A wave washer is used for a shaft supporting device of an electric power steering system. The wave washer has an annular portion and six outward protrusions. The annular portion has first protrusions that protrude in a first axial direction and second protrusions that are formed so as to continuous with the first protrusions and that protrude in a second axial direction. Each outward protrusion protrudes from an outer periphery of the annular portion in a radially outward direction of the radial direction of the annular portion.
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