Road structure – process – or apparatus – Apparatus – Material distribution means
Patent
1981-10-15
1985-09-10
Reeves, Robert B.
Road structure, process, or apparatus
Apparatus
Material distribution means
222609, 222625, 280 1, 118305, 118308, 118323, 404108, E01C 1918
Patent
active
045403120
ABSTRACT:
A material spreader system is designed to dispense a topping material onto the surface of a plastic substance lying within an area having a length, width and opposing sides. The material spreader system also includes features which enable it to dispense topping material within an area including a vertically extending obstruction positioned adjacent one of the sides of the area and extending a predetermined distance into the area. The obstruction defines a reduced width section of the area. The material spreader system includes a spreader for storing a supply of topping material and for dispensing a layer of the topping material as the spreader is translated along a path. An adjustable bridge provides an elevated path to permit widthwise translation of the spreader across the area. The normal bridge span has a length equal to or greater than the full width of the area. In order to dispense topping material in the reduced width section of the area, the bridge includes structure for reducing the span length such that the bridge will clear the obstruction. Translatable bridge support structure is coupled to the bridge for supporting the bridge above the area while permitting translation of the bridge along the entire length of the area. Drive means is coupled to the spreader to translate the spreader across the path formed by the bridge to thereby dispense a layer of topping material over the entire area. Sequential translations of the spreader across the bridge followed by sequential translations of the bridge along the length of the area covers the entire surface of the area with a layer of topping material.
REFERENCES:
patent: 2789485 (1957-04-01), Lindgren
patent: 2965987 (1960-12-01), Graves
patent: 3334787 (1967-08-01), Sugimoto et al.
patent: 4349294 (1982-09-01), Allen
patent: 4411554 (1983-10-01), Gratzfeld
General comments relating to early material spreader systems.
1968 Concrete Construction Magazine article relating to a material spreader system.
Allen Engineering Corporation
Reeves Robert B.
Stormer Russell D.
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