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:
Feb. 05, 2019
Filed:
Mar. 13, 2015
Grenzebach Maschinenbau Gmbh, Asbach-Baeumenheim, DE;
Markus Weigl, Donauwoerth, DE;
GRENZEBACH MASCHINENBAU GMBH, Asbach-Baeumenheim, DE;
Abstract
Apparatus and method for increasing the quality of the weld seam in friction stir welding, with the following features: a) a receiving plate () with a drive head (), the latter having a receiving flange () for receiving a holding bell () connected by means of a union nut () to a welding shoe () with a welding pin tip (), b) the welding shoe () has a circular basic shape, on which there is a transverse web running over the cross section and rising at a right angle to said basic shape, said transverse web having a width of approximately ¼ to ⅕ of the diameter of the basic shape and having an arc-shaped shoe sliding surface and shoe smoothing surface (), c) the welding pin tip () has substantially a surface structure in the form of a tapering thread, this thread-like structure not being arranged in a purely circular manner.