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:
Feb. 12, 2019
Filed:
May. 10, 2016
Applicant:
Liebherr-werk Ehingen Gmbh, Ehingen-Donau, DE;
Inventors:
Hans-Dieter Willim, Ulm-Unterweiler, DE;
Uwe Frommelt, Ehingen, DE;
Jens Koenneker, Munderkingen, DE;
Assignee:
Liebherr-Werk Ehingen GmbH, Ehingen/Donau, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66C 23/76 (2006.01);
U.S. Cl.
CPC ...
B66C 23/76 (2013.01);
Abstract
A crane may include a travelable undercarriage, a superstructure rotatably supported thereon with a luffable boom system arranged thereon and a derrick boom, with an auxiliary crane being used as derrick ballast. In The auxiliary crane may be driven onto a ballast base plate attached to the derrick boom for the alignment of the boom system in order to thus form at least a large portion of the counter-weight.