Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Koichi Ishiguro0
Tomio Odakura0
Date of Patent
September 24, 2019
0Patent Application Number
160970030
Date Filed
April 25, 2017
0Patent Citations Received
Patent Primary Examiner
Patent abstract
The invention is directed to a friction stir welding device which can realize appropriate friction stir welding while preventing a welding tool from being worn out and damaged. Therefore, the friction stir welding device is provided with a welding tool which rotates while abutting on a member to be welded to cause a plastic flow phenomenon in the member to be welded, a tool holder which grasps the welding tool and rotates together with the welding tool, supply paths which are formed in the tool holder and supply a refrigerant to the welding tool.
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