Insertion of compressible sheets in concrete
US4077732A · kind A · utility
1Cited by
9References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1977 |
| Grant date | Mar 7, 1978 |
| Priority date | — |
| Expiry date | Jan 11, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C23/026
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Slip form concrete laying machines for forming curbs are equipped with apparatus which forcibly inserts compressible sheets downwardly in the freshly laid concrete, the sheet being strengthened by a backing plate and an attached strip at its lower edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.