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:
Aug. 09, 2005
Filed:
Mar. 12, 2003
Applicants:
Joop Roodenburg, Delft, NL;
Anne Klaas DE Groot, Sugar Land, TX (US);
Inventors:
Joop Roodenburg, Delft, NL;
Anne Klaas De Groot, Sugar Land, TX (US);
Assignee:
Itrec B.V., , NL;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B019/084 ;
U.S. Cl.
CPC ...
Abstract
The invention is a hoist system for a derrick with a derrick inside, a derrick outside, and a derrick top side; a splittable block connected to the derrick top side; a hoisting cable guided through the splittable block; a moveable trolley with a trolley top side and a trolley bottom side, wherein the trolley is connected to the splittable block and wherein the moveable trolley is removably secured on the derrick; and a hoist winch adapted to pull the hoisting cable over the derrick top side and through the splittable block to move the moveable trolley relative to the derrick.