Load transfer
US4118012A · kind A · utility
14Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1977 |
| Grant date | Oct 3, 1978 |
| Priority date | — |
| Expiry date | Feb 25, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S254/90
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Control of vertical motion of a suspended crane hook assembly to accommodate vertical motion between a station carrying the crane and a station carrying a load is achieved by a transducer on the hook assembly and a control cord depending onto the load station. Tension above a set value in the cord produced by a crew member on the station causes the hook assembly to descend and below the set value causes it to rise. Movement of the stations causes a continuous adjustment of tension and the hook assembly follows the motion, extra tension being applied to guide the hook assembly down to the load and vice versa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.