Utility crane
US4150754A · kind A · utility
11Cited by
3References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 23, 1977 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | May 23, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C23/54
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A trailerable utility crane having a compound articulated mast to provide variable working configurations and foldable on itself to provide a relatively compact storage configuration as well as an extended length sufficient to load and unload a tow vehicle. Transport wheels for road travel are carried by the mast in a manner that allows the base of the crane to be lowered to the ground automatically with extension of the mast. The mast is supported for azimuthal movement on the base and outriggers for stabilizing the base are safety-interlocked with the azimuthal support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.