Apparatus for levelling concrete
US4861188A · kind A · utility
45Cited by
15References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1987 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Mar 2, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F21/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
This invention relates to a method and an apparatus for compacting and smoothing freshly poured concrete during the construction of a floor or other flat surface. The apparatus is a screed divided in two portions. The first portion is used to level, compact and remove excess concrete and the second portion allows the screed to float on the freshly poured and soft concrete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.