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:
Oct. 23, 2018
Filed:
Mar. 27, 2014
Think and Vision Gmbh, Vienna, AT;
Bouchra Lamik-Thonhauser, Gai, AT;
Anton Scheibelmasser, Graz, AT;
Anton Kotov, Samara, RU;
Alexander Fine, Leoben, AT;
Manfred Gutschelhofer, Langenwang, AT;
Johann Jud, Kindberg, AT;
Florian Aichinger, Pasching, AT;
THINK AND VISION GMBH, Leoben, AT;
Abstract
A drill pipe, particularly for a drill string, having an outer and an inner pipe (), a female connector () with an internal thread at one end of the drill pipe (), and a male connector () with an external thread at the end opposite from the female connector (), wherein the inner pipe () is arranged substantially concentrically in the outer pipe () and the drill pipe () has a center region () with an internal diameter. The outer pipe () has an inwardly thickened wall portion at an end region () on the male connector side, having a smaller internal diameter than the internal diameter of the center region (), and the internal diameter of the outer pipe () remains substantially the same at an end region () on the female connector side in relation to the internal diameter of the center region ().