Torque transmission shaft having universal joint yoke and method of manufacturing the same
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United States of America Patent
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Mar 13, 2018
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N/A
app pub date -
Jun 23, 2014
filing date -
Jul 30, 2013
priority date (Note) -
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Abstract
A rod-shaped element having an outer diameter, which is the same as an outer diameter of a completed rod part, has one axial end portion and the other axial end portion to which a base end portion of a bifurcated yoke is fixed. The one axial end portion is subject to plastic working for diametrically deforming an outer periphery of the one axial end portion. Thereby, the outer periphery of the one axial end portion is formed with a male spline part having a groove bottom diameter smaller than an outer diameter of a rod part and having a tooth tip diameter larger than the outer diameter of the rod part.
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