Road structure – process – or apparatus – Apparatus – With means for profile shaping – e.g. – crown
Patent
1981-02-24
1983-05-24
Byers, Jr., Nile C.
Road structure, process, or apparatus
Apparatus
With means for profile shaping, e.g., crown
404105, 404108, 404115, E01C 1128
Patent
active
043848060
ABSTRACT:
Apparatus for extruding a continuous concrete structure along a surface such as a curb and gutter. The apparatus includes an open bottom hopper for containing a supply of concrete mounted to a vehicle. An open bottom mold extends rearwardly from the open bottom of the hopper and causes the concrete flowing from the hopper onto the surface to be provided the proper cross-sectional shape as the vehicle moves along the surface. The lower leading face of the hopper is slanted rearwardly. Vibrators are immersed within the concrete overlying the open bottom of the hopper and in an area generally horizontal with and to the rear of the lower leading face of the hopper. The combination of the slanted lower leading face and the properly situated vibrator causes the apparatus to creep or walk forward so that very little if any motive power need be applied to the vehicle. The upper surface of the mold has a slight negative pitch along most of its length, that is, it slants upwardly from front to rear, to reduce the drag on the apparatus.
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Byers Jr. Nile C.
Hjorth Beverly E.
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