Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7293376 | Grading control system A grading control system for a work machine having a work implement for grading along a grade defined by a laser plane generator is disclosed. The system includes tilt and lift actuators associated with the work implement and configured to selectively tilt, raise an... | 11/13/2007 |
| 7162817 | Wheel loader The lifting frame with Z-kinematics of a wheel loader comprises an accessory arm with a lifting cylinder coupled to the vehicle frame or to the truck front-end and a rocker-type reversing lever coupled to the accessory arm, to the ends of which reversing lever the t... | 01/16/2007 |
| 7104340 | Towed implement draft force sensor A draft force sensor is provided for a coupling member coupled between a towing vehicle and a towed earth engaging implement, such as a scraper. The draft force sensor includes first and second bores extending through the coupling member. Each bore has a horizontal ... | 09/12/2006 |
| 7059422 | Self-orienting loader bucket mechanism A mechanism for retaining a pre-selected orientation of a front-end loader bucket at all points throughout the working range of the lift arm assembly includes a linkage system designed to allow rotation of the bucket from a tilted back position to a fully dumped pos... | 06/13/2006 |
| 6637134 | Snow track preparation machine with mill mounted in a revolving manner Snow track preparation machine with mill installed in a revolving manner and including a pump driven by a power source, a hydraulic motor connected to the pump on the delivery side and the return side, an actuator supported on the assembly frame and reali... | 10/28/2003 |
| 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 |
| 6112828 | Earth working scraper An earth working scraper including a semi-circular scraper assembly having a scraper blade and a plurality of wall sections. The wall sections form a compartmentalized space substantially interior the scraper assembly for carrying soil. A wheeled carriage... | 09/05/2000 |
| 5960378 | Excavation area setting system for area limiting excavation control in construction machines An excavation area setting system for area limiting excavation control in construction machines, with the excavation control being performed to calculate a target speed vector for control of a front device on the basis of a body, modify the target speed v... | 09/28/1999 |
| 5682311 | Apparatus and method for controlling a hydraulic excavator A depth measuring apparatus for an excavator which includes an inclination sensor assembly mounted along the pivot axis between the stick arm boom and the bucket, a depth sensor mounted along the same pivot axis as well as a laser receiver for receiving a... | 10/28/1997 |
| 5561924 | Apparatus for adjusting the attitude of construction equipment In a scraper, or the like, having as its purpose the cutting of a level swath in an earthen terrain, and receiving the earth cut from the terrain, in which the cutting blade is mounted, in a level attitude, to a scraper frame, which frame is itself mounte... | 10/08/1996 |
| 5559725 | Automatic depth control for trencher A method and apparatus for controlling a trencher having a tractor that is propelled along terrain and a trenching implement adjustably mounted to the tractor at a rearward portion thereof with respect to movement of the tractor along the terrain includes... | 09/24/1996 |
| 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 |
| 4955437 | Underground electromagnetic tillage depth sensor A device for determining the depth below the ground surface of a working member of an earth moving equipment, comprises a sensor for transmitting electromagnetic signal from underneath and toward the ground surface and for receiving a portion of the signa... | 09/11/1990 |
| 4449733 | Elevationally adjustable fluid suspension system for a wheel tractor scraper or the like In a tractor-scraper combination having a single-axle two-wheel tractor and an earthmoving scraper articulately joined together, one or two hydraulic suspension jacks are operatively connected between the axle and main frame of the tractor for varying the... | 05/22/1984 |
| 4393606 | Excavator with laser position indicator A trench hoe-type excavator carries a digging bucket at the end of a digging device. The bucket and digging device are capable of being driven so as to maintain a set cutting angle. An indicating apparatus arranged in the field of view of the excavator op... | 07/19/1983 |
| 4389800 | Land leveling scrapers There is disclosed a land leveling scraper having skid shoes whose bottom surfaces are free to accommodate and follow irregularities in the ground surface being leveled, and are urged against the ground surface with a force proportional to the load on the... | 06/28/1983 |
| 4364191 | Piling rake A rake for use with tractors has a blade connectable to a tractor and a plurality of teeth extending from the bottom of the blade. The teeth are pivotally connected to permit movement of the teeth away from objects encountered when the tractor moves. Flui... | 12/21/1982 |
| 4343099 | Apparatus for the parallel guidance of the bucket of a hydraulic excavator In a hydraulic dredger/excavator wherein it is desired to guide the bucket parallel to itself there is provided a control apparatus for positively controlling the necessary changes of angle between the dipper boom (4) and the bucket (5) in dependence on t... | 08/10/1982 |
| 4336663 | Earth scraper assembly A hoisting mechanism for earth scraping equipment adapted for towing behind a vehicle, such mechanism including a plurality of pivotally connected links designed to pivot the scraper bed about rear wheels in a manner that provides for change in elevation ... | 06/29/1982 |
| 4301607 | Hydraulic excavator A hydraulic excavator comprising a vehicle, a boom pivotally connected at one end to the vehicle, a stick pivotally connected at one end to the other end of the boom, a bucket pivotally connected to the other end of the stick. A bucket attitude maintainin... | 11/24/1981 |
| 4107859 | Depth indicating and depth controlling devices for earth moving machines A depth indicator and automatic control device to indicate and control the position of an earth cutting blade, being drawn by a tractor, with respect to the surface of the terrain over which the tractor wheels of the prime mover pass, as it draws the blad... | 08/22/1978 |
| 3978597 | Draft sensing elevating scraper with automatic elevator speed control A removal control system for a scraper having a tractor pivotally attached to a bowl, said bowl having a cutting blade attached thereto, an elevator pivotally mounted on said bowl, an engine and utilizing an elevator control system and a cutting depth con... | 09/07/1976 |
| 3934362 | Elevating-type scraper having forwardly swingable floor section An elevating type scraper for earthmoving purposes having an open-fronted bowl with a scraper blade along the leading edge and with a rearwardly inclined elevator for sweeping the loosened soil from the blade into the bowl, the back of the bowl and the ba... | 01/27/1976 |
