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:
Mar. 13, 1979
Filed:
Sep. 12, 1977
Applicant:
Inventors:
Reinhard Pawelletz, Dusseldorf, DE;
Heinz Schneider, Dusseldorf, DE;
Assignee:
Mannesmann Aktiengesellschaft, Dusseldorf, DE;
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324220 ; 324226 ; 324240 ; 228104 ;
Abstract
In electromagnetic testing method for tubes is disclosed, which is used during continuous production of tubing from strip being formed into a tube followed by welding the adjoining edges. A magnetic field is applied from the outside, possibly being a field accompanying the welding process, and a pickup transducer is inserted from the tube forming location to scan the interaction of the penetrating field with the tube particularly the seam and adjacent zones.