Road structure – process – or apparatus – Apparatus – With in situ means for both comminuting and treating – e.g.,...
Patent
1983-04-21
1984-07-03
Byers, Jr., Nile C.
Road structure, process, or apparatus
Apparatus
With in situ means for both comminuting and treating, e.g.,...
404133, 172 40, E01C 2312
Patent
active
044576455
ABSTRACT:
A pavement breaking apparatus having variable impact force for fracturing concrete to a size and pattern specification without distorting the material. The apparatus includes at least one spring pack connected between a leaf spring housing and an impact tool holder. The housing is connected to a vehicle for pivotal movement about a transverse horizontal axis. Further, the housing is connected to the vehicle for movement about a vertical axis thereby permitting lateral swinging movement of the spring pack and tool holder. The spring pack includes a plurality of stacked leaf springs with a centrally located main leaf spring extending full length between the housing and tool holder. First and second groups of leaf springs having variable lengths are stacked together on opposite sides of the main spring. The spring pack further includes third and fourth groups of leaf springs positioned on opposite sides of the main spring between the main spring and the first and second groups of springs. Finally, fifth and sixth groups of springs are mounted on opposite sides of the main spring between the main spring and the first and second groups of springs with the ends of the third and fourth groups of springs being spaced from the ends of the fifth and sixth groups of springs to form open areas within the spring pack. Each of the leaf springs of the various groups and the main leaf spring have projections which are nestable with one another to provide a locking feature between the individual leaf springs. Further, the leaf spring pack is held in alignment along its length by bracket assemblies, including opposed spacer plates and buffer pads. Thus, the present construction permits flexing of the various leaf spring groups in an improved manner which provides additional flexibility and assists in the fracturing of the concrete without distorting the surface.
REFERENCES:
patent: 2029363 (1936-02-01), Downie
patent: 2901232 (1959-08-01), Lewis
patent: 3133730 (1964-05-01), Cornett
patent: 3150724 (1964-09-01), Oelkers
patent: 3181627 (1965-05-01), Cornett
patent: 3308730 (1967-03-01), Vorwald
patent: 3805897 (1974-04-01), Cobb
Byers Jr. Nile C.
Wolverine Technology, Inc.
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