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:
Sep. 09, 2008
Filed:
Dec. 20, 2005
Yoshio Sato, Ayase, JP;
Yoshio Sato, Ayase, JP;
Obara Corporation, Kanagawa-ken, JP;
Abstract
There is provided a friction stir spot joining device in which a pin can be simply and surely caused to come into or out from a tip end of a joining tool by driving a pin extraction motor when the pin extraction motor is used so as to cause the pin to come into or out from the tip end of the joining tool. The friction stir spot joining device for softening and stirring works to be joined due to frictional heat generated by the rotation of the pin so as to perform spot joining contains a stirring motor for rotating the joining tool having the pin, a pressure application motor for linearly driving the joining tool so as to cause the pin to come in or come out from a tip end of the joining tool and a pin extraction motor disposed at the rear of the stirring motor on the same axis line as the stirring motor, while being integrated with the stirring motor, for causing the pin to come in or come out from a tip end of the joining tool, wherein the pressure application motor is disposed in parallel with the pin extraction motor and a pressure application screw shaft, operated by the pressure application motor, is disposed on the same axis line as the pin extraction motor.