Method and device for producing a straight cylindrical body by molding using a loose hardenable granular material and the utilization thereof for producing a tube
US6911168B2 · kind B2 · utility
0Cited by
2References
27Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 11, 2001 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | Jan 11, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B21/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to molding a right cylindrical body from a settable loose granular composition in a mold cavity, in which a mold cavity (4) is fed with successive charges of the composition in the loose state and each new charge is thrust by means of thrust surfaces (11) into the surface S of the molded composition in order to cause the new charge and the molded composition to interpenetrate in such a manner as to densify the molded composition. The invention is applicable to making a pipe, in particular out of a cement composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.