RACK SHAFT, METHOD FOR MANUFACTURING SAME, AND RACK-AND-PINION STEERING GEAR UNIT
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United States of America Patent
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Issued Date -
Jan 23, 2025
app pub date -
Aug 16, 2022
filing date -
Aug 16, 2022
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Abstract
A rack portion (21) includes a hardened layer (26) over an entire circumference on a radially outer portion including the rack teeth (20). A depth (tb) of a portion of the hardened layer (26) on an opposite side to the rack teeth (20) in a radial direction is shallower than a depth (ts) of portions of the hardened layer (26) on both sides of the rack teeth (20) in a tooth width direction.
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