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:
Nov. 22, 2011
Filed:
Oct. 30, 2003
Applicants:
Philippe Hocquet, Vanves, FR;
Huy-van Nguyen, Antony, FR;
Andrew Parry, Bourg la Reine, FR;
Inventors:
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 4/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The hydraulic braking device () to be installed in a turbine () provided with a turbine shaft () comprising at least one body () connected to the said turbine shaft (). When the said hydraulic braking device () is immersed in a fluid medium, axial rotation of the turbine shaft () about its axis causes a movement of the said at least one body () with respect to the said fluid medium, this movement generating a resisting torque (T) related to the rotation speed of the turbine shaft () through a non-linear relation.