Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working
Patent
1996-06-27
1997-12-09
Bagnell, David J.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Floor-working
299 395, 299 68, E01C 23088, E01C 2309
Patent
active
056952562
ABSTRACT:
A road excavator is a drivable vehicle equipped with an excavating apparatus which has a rotary cutter for excavating a paved highway surface, first and second conveyors for exporting an excavated material outside of the excavator, a collector which is placed between the cutter and the first conveyor for gathering the material as much as possible. The collector has a casing having a discharge port at the center thereof for receiving the excavated material and a helical screw, incorporated within the casing, having two sets of spiral blades for gathering the excavated material toward a discharge port and expellers for expelling the material forcibly to the first conveyor through the opening according to the rotation of the screw. The excavator includes a hydraulic lift for adjusting the vertical position of the cutter, a cutter transport system derived by a hydraulic motor to set the horizontal position of the cutter, a pair of hydraulic cylinders for adjusting the vertical position of the collector, and hydraulic motors to drive the cutter and the helical screw.
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patent: 4272212 (1981-06-01), Bauer, Jr. et al.
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patent: 4704045 (1987-11-01), Taylor et al.
patent: 4960306 (1990-10-01), Kipp et al.
patent: 4971476 (1990-11-01), Guillon
Bagnell David J.
Ohkita Engineering Co., Ltd.
R.M. Barton Co., Ltd.
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