Back to results
US 4,861,188 AGranted
Apparatus for levelling concrete
AssigneeLes Placements Paro Inc.
InventorRoger Rouillard
Life of this patent
Estimating the term…
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.
Claims12
A screed for levelling concrete or other similar material, comprising:
- (a) a first section comprising first means for levelling and compacting the concrete or similar material, and second means for removing excess concrete;
- (b) a second flat section operatively associated with said first section and including third means comprising a plane surface of sufficient area for causing the screed to float on the freshly poured concrete;
- and
- (c) displacing means secured to said screed for displacing said screed so that said first section is used as a front section of said screed and said second section is used as a rear section of said screed, said front section passing over the concrete prior to said rear section passing over the concrete.
1 more element
A method for compacting and levelling a concrete surface, comprising the steps of:
- (a) pouring and hand levelling two freshly poured concrete strips;
- (b) filling with concrete the volume comprised between the two strips, said strips defining sides of said concrete surface;
- (c) roughly levelling the concrete surface;
- (d) providing a screed which comprises a first section having first means for levelling and compacting the concrete surface and second means for removing excess concrete, and a second flat section operatively associated with said first section and including third means comprising a plane surface of sufficient area for causing the screed to float on the concrete surface;
- and
- (e) moving the screed on said two freshly poured concrete strips by displacing the screed so that said first section is used as the front section of said screed and said second section is used as the rear section of said screed.
3 more elements
Dependencies are inferred from the claim text.