Vibratory screed including a laterally displaceable oscillating

Details Vibratory screed including a laterally displaceable oscillating Vibratory screed including a laterally displaceable oscillating

1986-04-24

1987-08-11

Novosad, Stephen J.

Road structure, process, or apparatus

Apparatus

Means to agitate material

404119, 404120, E01C 1930

Patent

active

046858261

ABSTRACT:
A vibratory concrete screed includes a frame having first and second ends and a length equal to or greater than the width of plastic concrete to be finished. A screed blade is coupled to the screed frame and engages the full width of the plastic concrete. Vibration generating structure is coupled to the screed for vibrating the screed blade. An oscillating strike-off is positioned in front of the vibrating screed blade to level, smooth and compact the plastic concrete surface before engagement by the vibrating screed blade. The oscillating strike-off includes a strike-off blade having a vertically oriented front face and a horizontally oriented lower face. Suspension means maintains the desired orientation of the front and lower faces of the strike-off blade, maintains the strike-off blade at a fixed vertical position with respect to the screed blade, and enables the strike-off blade to be laterally displaced within a horizontal plane. Means is provided to laterally reciprocate the strike-off blade with respect to the stationary, vibrating screed blade.

REFERENCES:
patent: 2038416 (1936-04-01), Clifford
patent: 2603132 (1952-07-01), Miller et al.
patent: 3110234 (1963-11-01), Oster
patent: 3883259 (1975-05-01), Berg et al.
patent: 4068970 (1978-01-01), Rowe
patent: 4253778 (1981-03-01), Morrison
patent: 4320987 (1982-03-01), Rowe et al.
patent: 4466757 (1984-08-01), Allen

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