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:
Aug. 14, 1979
Filed:
Jul. 29, 1977
Wilhelm Scheffels, Puchheim, DE;
Steigerwald Strahltechnik GmbH, Munich, DE;
Abstract
A method and apparatus for seam welding by means of a charged particle beam is disclosed, wherein any misalignment of the beam with respect to the gap between opposed surfaces of two workpiece parts to be joined is compensated for by a double deflection of the beam. The position of the beam in respect to the gap is determined at two locations spaced in the direction of propagation of the beam, and the deflection in two spaced deflection zones is controlled in response to the result of such determination so that the deflected beam--which may oscillate transversely to the longitudinal direction of the gap--is aligned to the gap and a sound weld seam is produced.