Power transmission shaft

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United States of America Patent

PATENT NO 12123460
APP PUB NO 20210040983A1
SERIAL NO

16979644

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Abstract

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A propeller shaft as a power transmission shaft includes a CFRP tube formed in a cylindrical shape as a shaft member, wherein a helical layer portion mainly bearing torsional strength and bending strength is made of carbon fiber of first carbon fiber material having a relatively high tensile strength (or a tensile elasticity), and wherein a hoop layer portion that is disposed at least one of inside and outside of the helical layer portion in a radial direction with respect to a rotational axis thereof and that does not bear torsional strength or bending strength is made of carbon fiber of second carbon fiber material having a tensile strength (or a tensile elasticity) lower than that of the first carbon fiber material.

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Patent Owner(s)

Patent OwnerAddress
HITACHI ASTEMO LTDHITACHINAKA-SHI IBARAKI

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishikura, Kenichiro Atsugi, JP 31 44
Sugiyama, Kenichi Commerce Township, US 31 225

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