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. 05, 1989
Filed:
Aug. 28, 1987
Eckhard Voigts, Bad Bentheim, DE;
Hans H Achilles, Peine-Stederdorf, DE;
Adolf Haussler, Buckenhof, DE;
Eberhard Peschel, Celle, DE;
Deutag Deutsche Tiefbohr-AG, Bad Bentheim, DE;
Wintershall AG, Kassel, DE;
Siemens AG, Erlangen, DE;
Preussag AG Erdol und Erdgas, Hanover, DE;
Abstract
A drilling derrick device for handling drill-pipe stands has at least one movable racking platform with pipe-stand receiving compartments, supported above the working deck of the derrick, at least one racking carriage associated with the racking platform and movable on the working deck and a pivotable drill-pipe robot having gripping arms to load and unload the racking platform and the racking carriage. The racking platform and the racking carriage are moved in synchronism relative to the drill-pipe robot which has a fixed position on the working deck in order to perform drill string dismantling and assembly operations.