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:
Jun. 13, 2017
Filed:
Mar. 02, 2015
Uacj Corporation, Tokyo, JP;
Toshihiko Fukuda, Tokyo, JP;
UACJ Corporation, Tokyo, JP;
Abstract
Providing a rotary tool for friction stir spot-welding, which makes it possible to join together two aluminum members superposed on each other, with a high degree of joint strength. The rotary tool has a probe which is provided in a central part of a distal end portion of a cylindrical tool body so as to extend coaxially with the tool body and which has a stepped structure consisting of an intermediate probe and a central probe which extend coaxially with each other. Distal end faces of the tool body and the intermediate probe respectively give a first shoulder surface and a second shoulder surface which are gradually recessed in a radially inward direction and connected to proximal portions of the respective intermediate and central probes.