The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 2021
Filed:
Mar. 24, 2020
Applicant:
Honda Motor Co., Ltd., Tokyo, JP;
Inventors:
Mitsuru Kamikawa, Tokyo, JP;
Naoto Shibata, Tokyo, JP;
Ko Sugai, Tokyo, JP;
Masafumi Yamamoto, Tokyo, JP;
Takafumi Murakami, Tokyo, JP;
Kazuya Kumei, Tokyo, JP;
Yutaka Takeuchi, Tokyo, JP;
Masaki Kawamura, Tokyo, JP;
Assignee:
HONDA MOTOR CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60B 35/12 (2006.01); B23K 20/12 (2006.01); B60B 35/14 (2006.01); B23K 101/04 (2006.01);
U.S. Cl.
CPC ...
B60B 35/12 (2013.01); B23K 20/129 (2013.01); B60B 35/14 (2013.01); B23K 2101/04 (2018.08); B60B 2310/208 (2013.01); B60B 2310/3025 (2013.01); B60B 2310/54 (2013.01); B60B 2360/102 (2013.01);
Abstract
A drive shaft is configured by joining solid stub shafts formed of a medium carbon steel to both ends of a hollow tubular body formed of a medium carbon steel. When expressed as grain size number, the grain size of the hollow tubular body at joint parts where the hollow tubular body and the solid stub shafts are joined together ranges from #5 to #9, and the grain size of the solid stub shafts at the joint parts ranges from #10 to #12.