Lattice mast crane and lattice mast boom
US8177081B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2009 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Aug 25, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C23/64
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
This invention relates to a lattice mast crane with a lattice mast boom to be luffed up in a vertical luffing plane, which comprises a pivot piece, a plurality of lattice pieces releasably connectable with each other, and a head piece. In accordance with the invention, the lattice mast boom includes a first and a second region, wherein in the first region the lattice mast boom includes at least two first strands of interconnected first lattice pieces extending in parallel in longitudinal direction of the boom, which are connected with the pivot piece via a lower cross-beam and with the head piece via an upper cross-beam, and wherein in the second region the lattice mast boom only consists of a second strand of interconnected second lattice pieces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.