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:
Jan. 20, 2004
Filed:
Jun. 24, 2002
Eberhard Schuffert, Homburg, DE;
Rüdiger Zollondz, Hornbach, DE;
Demag Mobile Cranes GmbH & Co., KG, München, DE;
Abstract
The invention is directed to a ring lift crane with a liftable ring forming a circular traveling path and having a plurality of segments which can be connected to one another. Within the ring, there is arranged a chassis having a superstructure which is connected with the chassis so as to be rotatable and which has a plurality of winches. The superstructure is provided with an adapter in each of two oppositely located end areas, and the adapters are supported in a rolling manner on the circular traveling path of the ring by rollers which are arranged in the end area of the adapters. The center of the ring and chassis forms the axis of rotation and the rear adapter is constructed so as to receive a counterweight and the front adapter is constructed so as to receive a boom in the form of a lattice mast which can be articulated and which has at least one main boom, and means are provided for generating the rotating movement of the ring lift crane, and the chassis is connected with different segments of the ring by reinforcement members. A lateral reinforcement is provided at least one a lattice mast component and extends along at least one half of the length of the lattice mast component.