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| Number | Title | Issue Date |
| 7555855 | Automatic digging and loading system for a work machine An automatic loading control system for loading a work implement of a work machine with material from a pile may include a lift sensor configured to monitor a lift actuator and communicate a lift signal. The system may also include a tilt sensor configured to monito... | 07/07/2009 |
| 7490421 | Method and construction machine for producing ground surfaces A method for producing ground surfaces with a hydraulic excavator including a shovel applicable to the surface of the ground, and a lifting cylinder for lifting and lowering the excavator equipment. The lifting cylinder of the excavator equipment is actively connect... | 02/17/2009 |
| 7370916 | Rear loader road milling machine with height-adjustable sealing device A rear-loader road milling machine with a milling roll, which is arranged in a roller housing open on the bottom, and having an opening between a front part of the roller housing and a road surface, that faces in a direction of travel, which can be closed with a sea... | 05/13/2008 |
| 7305778 | Self-propelled working machine A self-propelled working machine has a pair of transporting parts, a working part, an engine for driving at least the working part, and a main switch for turning the engine on and off. A locomotion preparation switch produces a command for moving the transporting pa... | 12/11/2007 |
| 7246456 | Linked mode for a multi-axis machine control A tool control system includes actuators to move the tool, a controller to permit either manual or automatic tool operation, and an output configured to display information pertaining to a position of the tool. In addition, the tool can be moved in either an indepen... | 07/24/2007 |
| 7185449 | System for controlling the hydraulic actuated components of a truck A system for controlling the hydraulically actuated components, including snow-ice control components carried by a truck. The system employs a hermetically secure composite housing mounted externally of the truck cab on the truck frame which retains a unique hydraul... | 03/06/2007 |
| 7073735 | Boom breakaway system Foldable boom inner wings are attached to a boom center frame through a rocker attached to a breakaway hydraulic cylinder pressurized to full stroke and connected to an accumulator. When a wing impacts an object, the impact load is transmitted through the fold cylin... | 07/11/2006 |
| 7036248 | Pattern select valve for control levers of a title work vehicle A backhoe control pattern selection arrangement is provided for a backhoe controlled by two control levers. The two levers are operatively connected to hydraulic systems that operate the boom and crowd hydraulic cylinders. An electrically operated valve block is ele... | 05/02/2006 |
| 7020553 | Signal processing system for construction machine A machine body controller 70A includes a modification control unit 70Ab for computing a torque modification value based on detected signals from environment sensors 75 to 83, and modifies a maximum absorption torque of a hydraulic pump co... | 03/28/2006 |
| 6951067 | Method and apparatus for controlling positioning of an implement of a work machine An apparatus for controllably positioning a work implement of an earth moving machine is disclosed. The work implement includes a boom and an attachment being attached thereto where the boom is actuated by a hydraulic lift cylinder and the attachment is actuated by ... | 10/04/2005 |
| 6948266 | Vehicular arm assembly The present invention relates to a device particularly suitable for grooming/shaping various snow terrain features used by recreational snowboarders and/or skiers and includes an adjustable arm assembly (2) attachable at one end to a suitable vehicle and bein... | 09/27/2005 |
| 6897967 | Method of grading railroad beds and a laser measuring device Railroad beds require regrading in order to permit for an increased axial load. There are often cables or tubes embedded in the roadbed at the roadbed sides, making regrading difficult. In accordance with the present invention, material is moved by suction to form p... | 05/24/2005 |
| 6854523 | Working vehicle In a motor grader, controls for running the vehicle at a constant speed are provided when a work for improving a land surface with a blade is started by running a working vehicle at a low speed from the low idling start. With this operation, it is possible to perfor... | 02/15/2005 |
| 6736216 | Laser-guided construction equipment A construction apparatus (12) and method of controlling a construction apparatus from a laser source (38) made up of a substantially non-rotating beam (56). The construction apparatus includes a body (14), a construction tool (16) ... | 05/18/2004 |
| 6675904 | Apparatus for controlling an amount of fluid for heavy construction equipment A set amount of fluid can be constantly supplied to an actuator and a flow-back of fluid from the actuator can be prevented, even in case of developing variations of a load pressure of the actuator and a pressure of a hydraulic pump, and provided is a con... | 01/13/2004 |
| 6523617 | Motor grader vehicle control arrangement An intuitive control for a motor grader controls the blade high lift assembly by adjustment of a miniature representation available at the operator's station. This miniature representation allows the direction of adjustment of various hydraulic components... | 02/25/2003 |
| 6470251 | Light detector for multi-axis position control An apparatus and method for controlling a hydraulically movable tool carried by a machine in order to maintain a selected horizontal orientation and a selected elevation relative to an external light reference. The apparatus is a control device, having a ... | 10/22/2002 |
| 6295746 | Method and apparatus for controlling movement of a work implement A method and apparatus for controlling movement of a work implement movably connected to a work machine. Movement of the work implement is controlled by manual and automatic control valves that are associated with "manual" and "automatic" modes of operati... | 10/02/2001 |
| 6249994 | Apparatus and method for operating track tensioning assembly of a hydraulic excavator A method of operating a work machine having (i) a hydraulic drive system for driving a drive track chain, (ii) a track tensioning assembly for adjusting tension on the drive track chain, (iii) a hydraulic work implement for performing a work function, and... | 06/26/2001 |
| 6125561 | Method for automatic loading of a scraper bowl The present invention generally provides a method of automatic control for a scraper bowl by measuring a first force as applied to the scraper bowl during forward movement of the scraper. Preferably, the first force is derived by measuring the hydraulic p... | 10/03/2000 |
| 6122848 | Hydraulic drive type working vehicle A hydraulic drive type working vehicle, with speedy responsiveness in an excavating operation, includes: a pouring changeover valve (10), which is switchable between (a) a pouring position, wherein pressurized oil of a travel hydraulic circuit (5) is pour... | 09/26/2000 |
| 6076029 | Slope excavation controller of hydraulic shovel, target slope setting device and slope excavation forming method A slope excavation control system for a hydraulic excavator and a slope excavation method using a hydraulic excavator include an external reference 80 which extends horizontally in the direction of advance of a target slope face. A vertical distance hry a... | 06/13/2000 |
| 5951613 | Apparatus and method for determining the position of a work implement An apparatus for determining a position of a work implement of a work machine in a site coordinate system. The position of the work implement is defined as the position in the site coordinate system of two fixed points located on the work implement. The a... | 09/14/1999 |
| 5822891 | Work area limitation control system for construction machine A work area limitation control system for a construction machine which includes a second entrance forbidden area calculating portion which sets a second entrance forbidden area positioned closer to a front device than a first entrance forbidden area. A sl... | 10/20/1998 |
| 5722190 | Priority biased load sense hydraulic system for hydraulic excavators A priority biased load sense hydraulic system for hydraulic excavators is provided. The hydraulic system includes first and second variable flow pumps which are coupled in load sense arrangement. The first pump is coupled to a first valve bank having a fi... | 03/03/1998 |
| 5647439 | Implement control system for locating a surface interface and removing a layer of material An apparatus coupled to a work machine for assisting the work machine in removing a first layer of material from a second layer of material is provided. The work machine includes a work implement with a cutting portion. The work implement is elevationally... | 07/15/1997 |
| 5584346 | Control system for a motor grader A motor grader includes a work implement operating device which permits operation of a plurality of direction control valve with reduced number of operation levers. The motor grader includes a wheeled body for traveling and carrying at least one work impl... | 12/17/1996 |
| 5551518 | Tilt rate compensation implement system and method A tilt rate compensating implement system and method utilizes first hand second sensors for sensing the position of the rod end portion of first and second implement lift jacks. A controller calculates a tilt angle of the implement based on a difference i... | 09/03/1996 |
| 5469646 | Fine operation mode changeover device for hydraulic excavator A hydraulic excavator adapted to be changed over simply to a fine operation mode so as to control the capacity of a hydraulic pump through load-sensing control to thereby make it possible to perform accurate work when the machine needs to be finely operat... | 11/28/1995 |
| 5365442 | Sonic ranging grade level controller An implement position control device including a central processing unit (6) coupled to an ultrasonic transducer (17) and receiver/amplifier (20) adapted to calculate the distance to a reference target (12 and a relatively more distant surface (9). Contro... | 11/15/1994 |
| 5070286 | Manipulator for public works machines and machine equipped with such manipulator for road works A manipulator arm is provided for public works machines comprising two beams of equal length and a pivoting cradle connected in series. The first or command beam is rotated about the forward end thereof on the chassis of a support unit, and the cradle is ... | 12/03/1991 |
| 4986010 | Sloper apparatus Mounted on a tractor is a sloper assembly which is adapted to push earth and debris away from a berm of a road. A support stand is pivotally connected to the tractor for rotation about a vertical axis. A first outrigger arm is pivotally connected to the s... | 01/22/1991 |
| 4970800 | Method and apparatus for grading and measuring a surface having a curved profile Apparatus is disclosed for grading and measuring surfaces such as roadbeds which have curved and inclined profiles which may have different shapes in successive transverse sections of the roadbed. A blade and screw cutter are supported by a frame which ex... | 11/20/1990 |
| 4933853 | Ultrasonic grade and auger control An ultrasonic grade and auger control for use on a road paving machine to compensate for uneven road surfaces is described. As the road paving machine travels, asphalt is centrally deposited along the road bed. An auger is connected to the back of the roa... | 06/12/1990 |
| 4852278 | Method and apparatus for grading and measuring a surface having a curved profile Apparatus is disclosed for grading and measuring surfaces such as roadbeds which have curved and inclined profiles which may have different shapes in successive transverse sections of the roadbed. A blade and screw cutter are supported by a frame which ex... | 08/01/1989 |
| 4807131 | Grading system A fully automated earthgrading machine and system is disclosed.... | 02/21/1989 |
| 4288196 | Computer controlled backhoe A backhoe includes a computer capable of automatically controlling the depth or lowermost point of the backhoe bucket. The computer is programmable to provide level operation of the backhoe, will have preset common depths and programmable depths, and furt... | 09/08/1981 |
| 4185698 | Adjustable auger dozer An earth working dozer or tractor having a transverse blade and an adjustable spiral auger supported forward of the blade which further crushes material lifted by the blade and moves the material transverse of the blade. The blade includes opposed support... | 01/29/1980 |
| 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 assembly being pivotally supported by a forward walking beam a... | 02/20/1979 |
| 4045893 | Automated planer An automatic planer comprising hinged fore and rear frames, a scoop with a cutting edge, a running gear, a planer dip angle pickup and a ground level pickup, an engagement mechanism of a prime-mover engine clutch, mainly tractor. The dip angle pickup is c... | 09/06/1977 |
