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6921230 |
Closed loop control system for pavement surfacing machine
Apparatus and methods for controlling the operation of a pavement surfacing machine are described. One embodiment that controls a pavement surfacing machine having a vehicle moveable in a...
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6916070 |
Laser-based controller for adjusting the height of a machining tool of a construction machine
A laser-regulating means for a construction machine for adjusting the height of a height-adjustable machining tool includes three laser measuring heads which are directed to three measuring points...
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6772134 |
Control means for a horizontal boring tool
Control apparatus for a horizontal boring tool is described which drives a boring lance via boring rods. The tool includes an input interface for receiving actual values of controlled variables of...
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6682261 |
Method for correcting the roughness of pavement
A method for correcting roughness of pavement wherein the steps include measuring an elevation profile of the pavement, converting the elevation profile to a roughness profile, and identifying...
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6371566 |
Process and device for milling off traffic areas
A process of milling by first surveying the actual profile of a traffic area and generating actual profile data. The desired profile data is generated from an initial basic data set and the desired...
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6179519 |
Device and a method for moving an object
A device and a method for moving an object are based on the fact that the object (8) is pivotable in relation to a base portion (7) about an axis. There is an arrangement (18) for displacing,...
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6152648 |
Method and apparatus for controllably avoiding an obstruction to a cold planer
A jump and return to grade function provides a means by activation of a switch to rapidly raise a milling machine to avoid an obstacle, then return the machine to the previous milling position....
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5984420 |
Grade averaging system with floating boom and method of using the same
A traveling construction apparatus includes a flame having first and second ground engaging traveling gears connected to the frame and spaced apart in a direction of travel. A traveling gear height...
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5879056 |
Kickback protection device and method of use
The present invention relates to a device for detecting when a cold planer experiences a kickback condition. The device includes a wheel adapted to be connected to the cold planer such that the...
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5645232 |
Tank cleaning apparatus and method
A knockdown tank-cleaning apparatus that is easily broken down and reassembled is provided. The tank-cleaning apparatus, when knocked down, easily fits through a standard man-way opening in the...
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5607205 |
Object responsive implement control system
An automatic object responsive control system for a work implement has a ground penetrating device mounted for sensing subsurface objects, an object detecting device for determining the...
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5533790 |
Floor milling machines
A floor milling machine is provided which comprises a chassis structure supported by front and real ground-engaging wheels respectively and a rotatable milling drum mounted on the chassis...
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5297894 |
Machine and method for repetitively cutting equally spaced and dimensioned highway surface depressions
A machine for repetitively cutting depressions of equal desired dimensions and at equal desired spacings between them in a highway surface includes a mobile chassis movable along the highway...
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4968099 |
Fluid control system for roadway grooving apparatus
A machine for cutting spaced grooves in a concrete road surface includes at least two laterally-spaced hydraulic cylinders which apply downward operating forces on a travelling cutter head. Each...
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4943119 |
Height control device and method for a fixture for machining an object essentially defined by a single plane
A height control device for a fixture which comprises at least a pair of gauging devices each having an ultrasonic transceiver for gauging a certain distance. A signal generator is connected to...
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4934757 |
Control of mineral mining machines
A coal wining plough in a longwall working employs adjustable floor cutters mounted on curved carriers displaced in guideways on the body of the plough. Wedges abut on the upper ends of the...
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4929121 |
Control system for a road planer
A control system for a road planer in which the mechanical drive components are selectively and sequentially controlled in response to operator inputs and to sensed operating conditions. The...
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4900093 |
Impact ripper and control
Impact rippers are useful in fracturing rocks, concrete, etc. which cannot be fractured by ripping alone. Operating the impactor of the impact ripper without sufficient loading applied to the...
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4767162 |
Blade control system for concrete cutting apparatus
A hydraulic system for a pavement cutting machine controls the engagement and disengagement of a rotating blade with a pavement surface. A proportional-flow manual-release valve is arranged in...
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4761037 |
Water jet demolition apparatus and method
A method and apparatus is disclosed for the removal of layers of concrete, particularly from roadways and motorways. This apparatus includes one or more nozzles located at one end of respective...
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4678236 |
Apparatus for working deposits by the open-cast working process
The invention relates to an apparatus for working deposits by the open-cast working process with a self-propelled chassis, with a cutting cylinder mounted vertically adjustably thereon to cut away...
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4662684 |
Rotary rock and trench cutting saw
A rotary trench cutting or rock milling saw unit is supported on a head for movement about two mutually perpendicular axes. The head is adapted for pivotal mounting on a backhoe boom or similar...
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4640551 |
Rock saw unit for hard rock earth formations
Hard rock trenching apparatus comprised of a pair of spaced apart diamond toothed cutting blades mounted for rotation in combination with a hydraulically operated breakout tool having a chisel face...
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4637656 |
Water jet scarifying apparatus
Apparatus for the removal of layers of concrete, particularly from roadways and motorways. This apparatus includes nozzles positioned at one end of respective hollow shafts supported by a ball...
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4578627 |
Device for correcting the control or the display of the position of a cutting tool of a cutting machine
With cutting machines, having their loading means (7) adapted to be lowered below the running surfaces (11) of the crawlers (2) of the drift advancing machine, there results an erroneous position...
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4572580 |
Mobile concrete or rock cutting apparatus
An instantaneous desired cutting position of a milling cutter or circular saw blade in a mobile apparatus for cutting hard materials, such as a concrete highway surface, is maintained even if the...
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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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4375212 |
Concrete sawing machine propulsion control apparatus
A self propelled sawing machine that includes a frame having ground engaging front and rear wheels, an engine driven infinitely variable hydrostatic or mechanical transmission on the frame that is...
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4343513 |
Method and power transmission system for operating a road planar machine
The method and power transmission system of this invention for driving a road planar machine has the cutter unit in a positive mechanical drive with the drive shaft of a machine power unit through...
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4270801 |
Steering and cutter drum positioning in a paved roadway planing machine
A wheeled roadway planing machine in which the wheels are pivotable by individual hydraulic rams for steering purposes. Each ram is controlled by a rotary, blocked-center valve and the valves are...
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4213719 |
Grade averaging apparatus
An improved portable grade averaging apparatus comprising an averaging bar assembly that serves as an elevation control reference for a track supported road working machine. One end of an averaging...
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4204714 |
Pavement cutting machine with pad to stabilize and brake machine
A machine for opening the joints and random cracks in pavement preparatory to placement of a filler-sealer material therein. The machine includes an open carriage having an opposed pair of side...
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4175788 |
Pavement cutting machine
A machine for opening the joints and random cracks in pavement preparatory to placement of a filler-sealer material therein. The machine includes an open carriage having an opposed pair of side...
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4173836 |
Condition responsive trench excavator
A trench excavator has a raisable and lowerable boom swingable about a vertical axis on the self-propelled chassis which is mounted on tracks. The boom carries a cutting head which is swingable...
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4140420 |
Portable grade averaging apparatus
A portable grade averaging apparatus comprising an averaging bar assembly that serves as an elevation control reference for a track supported road working machine, one end of the averaging bar...
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3945138 |
Hydraulically controlled and driven bucket wheel dredge
A hydraulically controlled and driven dredge, in which the pumps for delivering the driving fluid for the bucket wheel drive are equipped with output controls for controlling the fluid delivery in...
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3929377 |
Vehicle-mounted hardened concrete grooving machine
A self-contained machine having two cutting heads, a debris-collection system and a ferrous-metal detection system is operable to groove or retexture highway pavements at the rate of 1600 square...
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3810676 |
ROAD LEVELLING MACHINE
A machine for levelling a concrete road has a motor driven chassis fitted with a pneumatic hammer unit arranged to cut away any part of the road surface passing below the hammer unit which exceeds...
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3796462 |
MACHINERY FOR MULTIPLE GROOVING OF PAVEMENT
An hydraulic system is provided to perform the functions of vehicle propulsion and steering and of cutter rotation and height control in multiple grooving of pavement. Multiple cutter heads are...
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3743033 |
ROTARY DRIVEN ROCK CUTTING EQUIPMENT
The invention relates to mobile rock cutting equipment which includes a rotor carrying a series of swing hammers which are adapted to strike cutting tools positioned against a rock face and mounted...
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3727332 |
LASER GUIDANCE SYSTEM FOR GRADE CONTROL
A vehicular machine, such as a trencher, having working means, such as a digging wheel, carried thereon for working material to a desired grade as the machine moves along a given path. Vertical...
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3706284 |
TRACK WORKING APPARATUS WITH LASER BEAM REFERENCE
A laser beam reference or datum in a track surfacer, liner or surveying apparatus is intercepted by a mask or sensor which is held in a measurably fixed relationship to the grade rail. This sensor...
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3674094 |
AUTOMATIC SLOPE CONTROLLER
A controller for a road finishing machine which is adapted to match the slope of the surface presently being prepared to the slope of an adjacent surface previously prepared embodying a first means...
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3617091 |
SAW CONTROL SYSTEM
A self-propelled saw machine having a vertically adjustable rotary blade for cutting or grooving concrete or similarly durable flooring or paving material is provided with hydraulic control of the...
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3608969 |
APPARATUS FOR CONTROLLING INITIAL ENGAGEMENT OF CUTTERS WITH CONCRETE PAVEMENT SURFACES
A tractor or wheel loader carries a grooving unit, including a gang of rotating saw blades, for cutting parallel grooves in a concrete pavement. A shock absorber device prevents the saw blades from...
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3548570 |
CUTTER BLADE CONTINUOUSLY AUTOMATICALLY ADJUSTABLE RESPONSIVE TO CHANGE IN RESISTANCE TO ITS OPERATION
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3414327 |
Apparatus and methods for cutting concrete surfaces
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