Method and device for producing a drainage element and drainage element produced thereby
US9205620B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2011 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Oct 7, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/104
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A porous hardenable drainage element (14) is produced from a molding compound (10) of expanded plastics granulate and a bonding agent by virtue of the fact that the molding compound is received in a ladle (30) having a pouring opening (32) closed off by a mold bottom (44), the molding compound is pressurized in the ladle, the element (14) is molded from the molding compound in a mold formed by lowering of the mold bottom (44) down into an opening cross section (42) consistent with a cross section of the pouring opening (32), and the element is separated from the molding compound by mutual lateral displacement of the mold and the ladle (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.