Air-lifted slab structure
US5970680A · kind A · utility
29Cited by
9References
5Claims
0Family size
Inventor
Key dates
| Filing date | Dec 10, 1997 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Dec 10, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B1/3511
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus for raising concrete floor slabs to form a multi-floor structure. Slabs are cast near ground level with apertures cast for well placed columns. The slabs are lifted sequentially, uppermost first, by an air cushion backed up by follower means to hold the slabs safely at any elevation reached. The air cushion is created between the current uppermost slab, the slab below, and the walls of a steel enclosure erected around the stacked slabs and extending upward allowing slabs to travel upward.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.