Lift system for tilt-up walls
US4437642A · kind A · utility
57Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1982 |
| Grant date | Mar 20, 1984 |
| Priority date | — |
| Expiry date | Mar 1, 2002 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G21/142
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hoisting attachment for a tilt-up wall slab is provided with a remotely operable quick release mechanism which is under the control of the positional attitude of a hoisting cable-attached shackle. An improved assemblage of wall slab insert anchor, support stand for the insert anchor, and a recess former frictionally attached to the upper end of the anchor is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.