Lifting arrangement for overhead traveling cranes
US6827334B2 · kind B2 · utility
15Cited by
17References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2002 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Dec 13, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66D1/26
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A lifting arrangement for overhead traveling cranes. The lifting arrangement includes two single reeved drums that are reeved together to provide true vertical lift of a load. The lifting arrangement allows for equalization of full up and full down rope fleet angles through utilization of axially staggered dual drums and/or a bottom block with two separate sheave nests. The lifting arrangement may utilize commercially available components to reduce the overall cost of the crane when compared with other powerhouse crane designs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.