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:
Jan. 10, 2012
Filed:
Sep. 09, 2008
Uwe Draeger, Barsinghausen, DE;
Helmut Winnacker, Burgdorf, DE;
Uwe Draeger, Barsinghausen, DE;
Helmut Winnacker, Burgdorf, DE;
Weatherford Energy Services GmbH, Edemissen, DE;
Abstract
The invention is directed to a turbine () for generating power in a drill string (), including a turbine rotor () drivable by a fluid and a bypass device having a first bypass channel bypassing the turbine rotor (). For varying the volumetric flow through the bypass channel, provision is made for a valve () and a control device driven by the fluid and having a drive element () by means of which the valve () is movable anywhere between a first and a second position. The drive element () produces a flow resistance in the fluid flow path downstream from the turbine rotor () and downstream from the valve () and in the flow direction takes support upon a spring ().