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:
Sep. 28, 2010
Filed:
Jul. 23, 2002
Applicants:
Wolfgang Paul, Bad Schwartau, DE;
Dirk Heidemann, Schwerte, DE;
Maciej Barcikowski, Bochum, DE;
Inventors:
Assignee:
Ruhrpumpen GmbH, Witten, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/16 (2006.01); E21B 21/01 (2006.01);
U.S. Cl.
CPC ...
Abstract
A drive apparatus for a drill stem, in particular for de-coking systems, has a feeder () connected to a water supply () via a first interface () and connected to a drill stem () via a second interface (), as well as a drive () and a gearbox () for rotatably driving said feeder () and said drill stem (), characterized in that said feeder () has a first section () connected to the water supply () and a second section () connected to the drill stem () and the first () and second () sections are releasably connected to each other.