Concrete screed
US4848961A · kind A · utility
Inventor
Key dates
| Filing date | Jan 11, 1988 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Jan 11, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G21/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to a concrete screeding apparatus, and more particularly to an improved portable and lightweight vibrating concrete screed enabling a workman to use same without the need for rigid forms. The screeding apparatus comprises a generally elongated beam having a horizontal surface and a generally vertical surface. A plurality of vibrators are mounted on the beam. The height of the vertical surface diminishes from the center to the edges so as to increase the amplitude of vibration and, therefore, improve the manoeuverability of the screed. In addition, the corners formed by the trailing edge and the side edges of the horizontal surface are rounded so as to avoid the penetration of the side edges into the freshly poured concrete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.