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:
Jun. 28, 2016
Filed:
Feb. 01, 2012
Jean Marie Laurens, Lausanne, CH;
Guy Russell, Singapore, SG;
Walter Althaus, Singapore, SG;
Max Ernst Meyer, Singapore, SG;
Jean Marie Laurens, Lausanne, CH;
Guy Russell, Singapore, SG;
Walter Althaus, Singapore, SG;
Max Ernst Meyer, Singapore, SG;
VSL International AG, , CH;
Abstract
A crane apparatus and method are described for lifting a heavy load such as a wind-turbine generator uniton to a wind-turbine tower. The crane is designed to climb up cablesattached to the top of the tower, carrying with it the cablesand lifting gearwhich will be required for the main lifting operation. The crane comprises a pair of jib-frameswith boom armswhich can be retracted during lifting and then deployed to a pivotable, loadbearing position once the crane is mounted at the top of the tower. Hydraulic strand jacksand heavy-duty strandsare preferably used for the heavy lifting. In a preparation step, a load-bearing bracket assembly, to which the jib-frameswill be secured, is hoisted up and fitted to the top of the tower. Once the lifting operations are complete, the crane assembly and the bracket assemblyare lowered from the towerand removed from site.