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:
Jul. 12, 2005
Filed:
Sep. 20, 2001
Takenori Hashimoto, Oyama, JP;
Shigetoshi Jhogan, Oyama, JP;
Yoshitaka Nagano, Oyama, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
A friction agitation joining tool (A,B) includes a rotor () having an end portion to be pressed onto at least one of surfaces of joining members () and a probe () to be inserted into a joining portion () of the joining-members (), wherein the probe () has a diameter smaller than a diameter of the rotor (). An end face () of the end portion of the rotor () is formed into a concave surface dented from a periphery of the end face () toward a rotational center of the end face (). The probe () is protruded from the rotational center of the end face (). The end face () is provided with a spiral groove () or an annular groove () surrounding the probe (). By performing the joining operation with the joining tool (A,B), a joined member with a good joint can be obtained.