Power transmission shaft and method for manufacturing same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11976704
APP PUB NO 20230047822A1
SERIAL NO

17977955

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Abstract

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A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1).

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Patent Owner(s)

Patent OwnerAddress
HITACHI ASTEMO LTD2520 TAKABA HITACHINAKA-SHI IBARAKI

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishikura, Kenichiro Atsugi, JP 31 44
Komai, Hiromichi Hadano, JP 46 542
Mabe, Yasutomo Akiruno, JP 14 86
Masuda, Toshiyuki Atsugi, JP 55 405
Nakane, Kiyokazu Kanagawa, JP 4 17
Zhu, Xiaojin Atsugi, JP 8 19

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