Concrete tanks with interlocking bottom
US4117071A · kind A · utility
4Cited by
2References
4Claims
0Family size
Inventor
Key dates
| Filing date | May 11, 1976 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | May 11, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B7/168
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The method of forming hollow concrete articles such as tanks which are cast in a mould around reinforcing metal, the mould being shaped to form a bottom and including an upstanding integral ridge which forms a mould for the inner lower portions of a wall subsequently formed on such bottom after the bottom is cast, characterized by an interlocking ridge at the join and by the absence of reinforcing metal at such join.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.