Method of producing a high-frequency heat treatment coil

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United States of America Patent

PATENT NO 9445461
APP PUB NO 20140246423A1
SERIAL NO

14350638

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Abstract

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A method is provided to produce a high-frequency heat treatment coil including a heating section for heating a heat treatment portion of an outer joint member for a constant velocity universal joint. The heating section is formed by machining in an integrated manner, and is joined to another section to complete the high-frequency heat treatment coil.

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Patent Owner(s)

Patent OwnerAddress
NTN CORPORATION3-6-32 NAKANOSHIMA KITA-KU OSAKA-SHI OSAKA 530-0005

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Shimasawa, Takeshi Shizuoka, JP 2 2
Suzuki, Shintaro Shizuoka, JP 138 1713
Tokuda, Atsushi Mie, JP 30 571

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