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Document Title |
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6729050 |
Control of excavation apparatus
A method and apparatus for controlling an excavator having a frame, engine, ground supports and an excavation boom with an excavating drum. The method includes fixing the orientation of the boom...
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5575538 |
Rock saw with centerline conveyor assembly and method of digging a narrow trench
A rock saw has a cutting wheel and a conveyor assembly capable of retrieving automatically essentially all materials excavated by the cutting wheel and of discharging the retrieved materials into...
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5378049 |
Rotary cutter for extracting hard rock
A disc-shaped rotary cutter for continuous excavation of hard mineral rock layers according to the invention includes a supporting element having a plurality of end faces and a plurality of cutting...
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5315770 |
Roadway trenching apparatus
A self propelled apparatus for digging a shallow trench along one side of a roadway is disclosed, and which is useful as part of a roadway widening operation. The apparatus comprises a cutter drum...
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5228220 |
Bucket chain excavator
A continuous excavating and loading machine having a front mounted rotary digging element divided into sections to allow cantilevered support, digs a width greater than that of any other part of...
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5219380 |
Trenching apparatus
A trenching machine having a tractor unit and a trenching bar mounted for transverse sliding movement on the rear end portion of the tractor unit to any desired location within the transverse...
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5214866 |
Continual digging, transport and loading accessory for earth or material moving equipment
A continual digging, transporting, and loading accessory can handle material. The accessory is adapted for exchangeable attachment on earth or material moving equipment. The accessory includes a...
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4908967 |
Heavy duty rock trencher
A heavy duty, chassis-mounted rock trencher for use with a conventional tractor for digging a trench, which obviates the use of outboard counterweights typically used to prevent overcentering...
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4785560 |
Continuous excavating apparatus
An excavating apparatus for breaking and removing material away from an upright face of material is disclosed. The apparatus includes a rotary cutting head mounted between the fore ends of a pair...
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4713898 |
Railroad mounted trench digger
A trench digger for digging and maintaining drainage ditches along railway road beds. The trench digger includes a compact rotary drum cutting head mounted on a boom that can be swung about a boom...
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4542940 |
Method and apparatus for cutting a trench through rock-like material
Apparatus and method for digging deep trenches having parallel generally vertical walls in solid rock such as limestone. The apparatus includes a transport means for providing support and for...
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4329087 |
Excavating and pipeline installation system
An excavating and pipeline installation system includes an excavating vehicle, an excavating wheel assembly and a plurality of conveyors. The excavating wheel assembly includes a pair of excavating...
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4035024 |
Hard rock trench cutting machine
A hard rock trench cutting machine includes a main body assembly, a cutter wheel assembly, and a longitudinal thrust assembly. The main body assembly includes two longitudinally extending...
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4009531 |
Reversible direction bucket wheels
The present invention relates to apparatus for handling bulk products, particularly in granular and pulverulent form, such as ores, coal or the like; the invention relates more especially to...
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4003148 |
Wheel excavator with pivotally mounted side cutting teeth
An excavating and loading system includes an excavating wheel assembly at the front thereof and a plurality of conveyors for conveying the material from the excavating wheel assembly upwardly and...
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3357118 |
Operative cutter unit for a wheel excavator
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3295233 |
Machine for digging footing trenches
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3203188 |
Method and apparatus for preparing a trench for a subsurface conduit line and for laying such a line
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3003611 |
Conveying device, especially for bulk material
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2909855 |
Excavating apparatus
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2807104 |
Rotary earth excavating machine
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1284318 |
Title is not available
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