Adaptable boom extension for a mobile crane having a telescoping boom
US7878346B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2008 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Jan 28, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C23/702
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A mobile crane includes a boom extension assembly carried alongside a telescoping boom assembly in a stowed position. The boom extension assembly includes a fly section with a first portion adapted for being connected to the head end of the boom assembly in an operative position while a second portion of the fly section adapted for being connected to the first portion remains in the stowed position. The first portion of the fly section may: (1) be shorter in length than the corresponding second portion of the fly section; (2) include sheaves for supporting a hoist line; (3) include a tapered end; or (4) be used in combination with two additional sections of the boom extension assembly. A related method includes connecting a first, shorter portion of a fly section to a head end of a telescoping boom assembly while a second portion remains in a stowed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.