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, 2007
Filed:
Sep. 05, 2003
Applicants:
Gabriel Carcagno, Campana, AR;
Rita G. Toscano, Buenos Aires, AR;
Hisao Nakamura, Yokohama, JP;
Tommaso Coppola, Rome, IT;
Tatuso Ono, Yokomashi Kanagawa, JP;
Inventors:
Gabriel Carcagno, Campana, AR;
Rita G. Toscano, Buenos Aires, AR;
Hisao Nakamura, Yokohama, JP;
Tommaso Coppola, Rome, IT;
Tatuso Ono, Yokomashi Kanagawa, JP;
Assignee:
Tenaris Connections AG, Ruggel, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A threaded tube joint for oil extraction industry has a trapezoidal thread and a toroidal sealing surface () placed at its end near the thread and engages, for sealing, a corresponding frusto-conical sealing surface () wherein the toroidal sealing surface () has a radius Rs value comprised within the range given by the formula