Traveling attachment for ring supported lift crane
US4387814A · kind A · utility
33Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1982 |
| Grant date | Jun 14, 1983 |
| Priority date | — |
| Expiry date | Feb 1, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C23/84
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A traveling attachment including two pairs of crawler assemblies and frame elements are provided for interconnection to the ring of a ring supported crane so the crane can travel under load. The crawler assemblies may be pivotally mounted and reversely and independently powered to facilitate turning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.