Road structure – process – or apparatus – Apparatus – With in situ means for both comminuting and treating – e.g.,...
Patent
1985-07-23
1987-04-21
Leppink, James A.
Road structure, process, or apparatus
Apparatus
With in situ means for both comminuting and treating, e.g.,...
172 26, E01C 2312
Patent
active
046592504
ABSTRACT:
An improved pavement extractor is disclosed herein which comprises a completely self-contained unit for removal of pavement in a situation where a new pavement is to be created. The device includes a combination of rippers and a hold-down pressure plate which efficiently extracts the pavement from the sub-base, a control chamber where the extracted pavement is led from the rippers and the hold-down pressure plate, which control chamber has located therein a pair of opposed rollers which controllably hold the pavement while a beater mechanism beats off pieces of the pavement of predetermined adjustable size. From the beater mechanism, the extracted pavement is conveyed to an elevator mechanism included in the device which conveys the now beaten small size pieces of pavement up to a sufficiently high level so as to enable the loading thereof into a vehicle such as a dump truck. The inventive pavement extractor is designed to be pulled by a crawler-type tractor which may have mounted thereon an automatic guiding device which also forms a part of the present invention. Through the use of the present invention, pavement as thick as 7 to 8 inches or more may be extracted.
REFERENCES:
patent: 2539136 (1951-01-01), Hite
patent: 2562400 (1951-07-01), Urschel
patent: 2756520 (1956-07-01), Soule
patent: 2768794 (1956-10-01), Putnam
patent: 3843274 (1974-10-01), Gutman et al.
patent: 4313502 (1982-02-01), Nelson
Carvellas Perry
Leppink James A.
Melius Terry Lee
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