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:
Nov. 19, 2019
Filed:
May. 20, 2015
Naoki Nakagawa, Shizuoka, JP;
Shintaro Suzuki, Shizuoka, JP;
Kenichi Nakano, Shizuoka, JP;
Takuya Fujita, Shizuoka, JP;
Kiyohiro Suzuki, Shizuoka, JP;
Renji Natsume, Shizuoka, JP;
Tatsuro Sugiyama, Shizuoka, JP;
Masazumi Kobayashi, Shizuoka, JP;
Naoki Nakagawa, Shizuoka, JP;
Shintaro Suzuki, Shizuoka, JP;
Kenichi Nakano, Shizuoka, JP;
Takuya Fujita, Shizuoka, JP;
Kiyohiro Suzuki, Shizuoka, JP;
Renji Natsume, Shizuoka, JP;
Tatsuro Sugiyama, Shizuoka, JP;
Masazumi Kobayashi, Shizuoka, JP;
NTN CORPORATION, Osaka, JP;
Abstract
For butt-welding, which includes bringing joining end surfaces of a cup member and a shaft member into abutment against each other and radiating a high energy intensity beam from a radially outer side, the shaft member has a recess on a radially inner side of the joining end surface to obtain a welded portion having a closed hollow cavity on a radially inner side after butt-welding. The joining end surface (protruding surface) of the cup member protrudes toward a radially inner side with respect to an inner diameter of the joining end surface of the shaft member. With this, a welded portion of an outer joint member of a constant velocity universal joint, which is manufactured by joining the cup member and the shaft member, can be improved in strength and quality.