High density concrete placer
US4314773A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1979 |
| Grant date | Feb 9, 1982 |
| Priority date | — |
| Expiry date | Dec 21, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01D2101/26
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A high density concrete placer is longitudinally translatable along a pair of parallel oriented support rails positioned adjacent to an area in which wet concrete has been poured. The concrete placer includes a bridge having first and second ends and first and second roller assemblies coupled to the first and second ends of the bridge. The roller assemblies contact the support rails and enable the bridge to be longitudinally translated along the support rails. A frame includes a plurality of immersible vibrator units which are coupled at spaced apart intervals along one side of the frame and descend vertically downward therefrom. A rolling table is coupled to the bridge and to the frame to be laterally translated between the first and second ends of the bridge. The frame includes a subframe which is vertically displaceable between a first and a second position and serves to vertically displace the vibrator units between a first and a second position. In the first position the vibrator units are positioned above the surface of the wet concrete and in the second position the vibrator units are immersed in the wet concrete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.