Road structure – process – or apparatus – Apparatus – Means to agitate material
Patent
1979-12-21
1982-02-09
Byers, Jr., Nile C.
Road structure, process, or apparatus
Apparatus
Means to agitate material
404119, 425219, E01C 1938
Patent
active
043147739
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.
REFERENCES:
patent: 2248103 (1941-07-01), Mall
patent: 2261659 (1941-11-01), Pierce
patent: 2380435 (1945-07-01), Heltzel
patent: 2583108 (1952-01-01), Lewis
patent: 3110234 (1963-11-01), Oster
patent: 3377933 (1968-04-01), Dale
patent: 3593627 (1971-07-01), Rowe
patent: 3738763 (1973-06-01), Glesmann
patent: 3753621 (1973-08-01), Dale
patent: 4128359 (1978-12-01), Cooper
patent: 4249327 (1981-02-01), Allen
Allen Engineering Corporation
Byers Jr. Nile C.
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