Moulding tool
US4365782A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1981 |
| Grant date | Dec 28, 1982 |
| Priority date | — |
| Expiry date | Oct 19, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B23/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Moulding tool for making an article from vibrated concrete optimized as regards strength, the article having embedded therein a tubular sleeve located by a pin during the moulding process. The moulding tool is designed to keep the interior of the sleeve free from concrete and to decrease wear and mechanical stress exerted on the pin during the moulding process. Such a moulding tool is characterized in that, during the moulding process, the pin extends through a sealing and dampening body made from an elastic or semi-hard material, the sealing and dampening body having sealing engagement with the pin. The sealing and dampening body is compressed by the sleeve so that a sealing engagement is achieved between one end of the sleeve and the sealing and dampening body and between the other end of the sleeve and a surface of the moulding tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.