Fastening member
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United States of America Patent
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Dec 15, 2015
Grant Date -
Jan 15, 2015
app pub date -
Dec 20, 2012
filing date -
Dec 22, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A fastening member for appropriately ensuring strength of a peripheral edge part of a tapered-ring-body-shaped part and appropriately reducing external dimensions. A bolt, a nut or a washer employed for fastening a body is fastened by a screw tightening action The fastening member has a tapered-ring-body-shaped part formed into a ring body shape with a gradually increasing diameter toward a seating surface formed into a circular-planar-band-ring-shape concentric with an axis so as to press against the body being fastened. The taper angle of the tapered-ring-body-shaped part is an acute angle, and an upright surface is formed on an outer circumferential surface of the tapered-ring-body-shaped part and vertically erected from the body being fastened.
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