Jacking apparatus adjustable for alignment variations
US4478389A · kind A · utility
0Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1981 |
| Grant date | Oct 23, 1984 |
| Priority date | — |
| Expiry date | Dec 17, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63C3/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A jacking apparatus for application of force to at least two anchor points for movement of a load. The force is transmitted through fluid in at least two equalizing cylinders after which it is transmitted to the anchor points. The fluid pressure in each of the equalizing cylinders is limited to a predetermined value to provide equal distribution of the load between all of the anchor points to which the jacking apparatus is or should be engaged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.