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:
Jul. 03, 2012
Filed:
Apr. 16, 2009
Rae Younger, Aberdeenshire, GB;
Alex Macgregor, Kirkcudbright, GB;
Adrien Bouillet, Avignon, FR;
Christian Leuchtenberg, Albany, NY (US);
Rae Younger, Aberdeenshire, GB;
Alex MacGregor, Kirkcudbright, GB;
Adrien Bouillet, Avignon, FR;
Christian Leuchtenberg, Albany, NY (US);
Managed Pressure Operations PTE Ltd., Singapore, SG;
Abstract
A drill pipe having a tubular body through which is provided a main bore, a side port provided in an exterior surface of the body, a side bore extending through the body from the main bore to the side port, and a valve member which is movable between a closed position in which fluid flow through the side bore is substantially prevented and an open position in which fluid flow through the side bore is permitted, wherein the movement of the valve member between the closed position and the open position comprises translational movement, and the valve member is located at least predominantly within the side bore.