Adjustment of shape and dimensions of a concrete article
US4596686A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 6, 1981 |
| Grant date | Jun 24, 1986 |
| Priority date | — |
| Expiry date | Oct 6, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B11/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for adjusting the tolerances, regarding shape and dimensions, of an elongated vibrated concrete article made in a mould after removing the article from the mould. The invention makes it possible to achieve close tolerances inspite of using a rather wet concrete composition, which is optimized as regards strength but which causes adhering and suction in the mould and alteration of the articles shape before hardening. According to the invention, the method is characterized in that the article, before hardening, is brought into engagement with one long side a straight-edge rule for being shaped thereby, in that the article on the end surfaces is pressed to a predetermined length, and in that the cross sectional shape of the article is adjusted into agreement with the desired shape while keeping the article in engagement with the rule and pressing it on the end surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.