Propeller shaft and production method for same

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United States of America Patent

PATENT NO 11692592
APP PUB NO 20220316533A1
SERIAL NO

17839162

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Abstract

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A low surface-roughness part is formed at a first tapered part, and, as a result, the roughness of an opening-edge of a groove part of an internal spline part that opens at the first tapered part is reduced, and surface pressure applied by the opening edge to a tooth of an external spline part can be reduced. As a result, the opening edge of the groove part of the internal spline part can be kept from digging into the tooth, and variation, between products, in the insertion load of a second shaft part can be suppressed.

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Patent Owner(s)

Patent OwnerAddress
HITACHI ASTEMO LTD2520 TAKABA HITACHINAKA-SHI 312-8503

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akita, Yasushi Isehara, JP 17 113
Ishikura, Kenichiro Atsugi, JP 31 44
Shimoda, Tatsuya Novi, US 214 10119
Yokoyama, Kazuhisa Yoshitomi-machi, JP 22 263

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