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:
Dec. 07, 2010
Filed:
Jun. 09, 2006
Applicants:
Angelo Calderoni, San Donato Milanese, IT;
Giorgio Girola, Cislago, IT;
Inventors:
Angelo Calderoni, San Donato Milanese, IT;
Giorgio Girola, Cislago, IT;
Assignee:
ENI S.p.A., Rome, IT;
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device and the relative are described, for the insertion of a new drilling string-element into a drilling-string essentially including a short pipe-shaped body (C) having, at opposite ends thereof, a device suitable for screwing the body onto drill pipes, in which two valves are housed, of which one valve (A) is radial to said short body, interceptable from the outside by means an adaptor and equipped with a suitable safety plug, the other valve (B) being axial with respect to the body.