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. 14, 2023
Filed:
Apr. 14, 2021
Osaka University, Suita, JP;
Toshiba Materials Co., Ltd., Yokohama, JP;
Hidetoshi Fujii, Osaka, JP;
Yoshiaki Morisada, Osaka, JP;
Kai Funaki, Kanagawa, JP;
Masahiro Kato, Kanagawa, JP;
Takayuki Fukasawa, Kanagawa, JP;
Yutaka Abe, Kanagawa, JP;
OSAKA UNIVERSITY, Suita, JP;
TOSHIBA MATERIALS CO., LTD., Yokohama, JP;
Abstract
A friction stir welding tool member according to the present embodiment has a shoulder portion and a probe portion concentrically projecting from an upper surface of the shoulder portion. The shoulder portion includes a curved surface processed portion that is curved to have a curved shape on an outer peripheral edge of the shoulder portion. A space occupancy occupied by the two-dimensional space in which neither the shoulder portion nor the probe portion exists is in a range of 30% to 70%, the space occupancy being determined based on a projection drawing of a side surface region surrounded from a tip of the probe portion to the curved surface processed portion of the shoulder portion.