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. 07, 1993
Filed:
Jan. 29, 1991
Applicant:
Inventors:
Volker Hann, Wendlingen, DE;
Siegfried Kramer, Hamburg, DE;
Assignee:
Deutsche Airbus GmbH, Bremen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ; F16L / ;
U.S. Cl.
CPC ...
285175 ; 285256 ; 285259 ; 285354 ; 285382 ; 2853824 ; 285391 ;
Abstract
A threaded connection for tubing joints having a threaded part and a matching part fixedly connected with the tube, which embraces the tube externally and rests with an inner surface having grooves at the outer surface of the tube, wherein the fixed connection between the matching part and the tube is produced by rolling material of the tube into the grooves, the matching part 2 having at least one groove 7, 8 which is conducted in a threaded shape manner, so as to prevent failure of the tubing joint by crack formation.