Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7430983 | Loader bucket orientation indicator A loader bucket orientation indicating system is provided for a bucket pivotal at an end of a loader boom. The system includes a support member having a base fixed to a side of an arm of the boom and a shaft projecting from the base. A pivot plate includes a central... | 10/07/2008 |
| 7171769 | Hitch system using a video camera to facilitate hitch alignment A video monitoring system is disclosed which may be used by the operator of a vehicle to guide the approach of the vehicle to an implement or a trailer or the like to bring connecting members of a hitch mechanism respectively located on the vehicle and on the implem... | 02/06/2007 |
| 7010873 | Continuous underground trench excavating method and excavator therefor This invention provides with a continuous underground trench excavating method and an excavator for the method, which performs vertical excavation in which a trencher of the excavator is inserted into the ground and horizontal excavation in which a travel body of th... | 03/14/2006 |
| 6655465 | Blade control apparatuses and methods for an earth-moving machine A method and apparatus for providing for real time automated control of the position of a blade on a earth-moving machine. The method includes providing a geography altering machine, including a blade and a computer, the computer having stored therein a r... | 12/02/2003 |
| 6574893 | Method and system for supporting construction of underground continuous wall and excavator therefor The present invention provides a system for supporting construction of an underground continuous wall wherein a control server connected to each excavator through a network comprises a ground strength evaluating unit for obtaining the ground strength dist... | 06/10/2003 |
| 6536142 | Excavator for a ditch and excavating method therefor An excavator of the invention comprises an excavating body having an excavating element and a clinometer detecting an inclination angle of ditch wall in a excavating ditch; a traveling distance recorder for measuring moving distance of said excavator; a c... | 03/25/2003 |
| 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 |
| 6381882 | Work control system for a trencher type excavator for soil cement wall The present invention provides a work control system for a trencher type excavator for soil cement wall, wherein in controlling the work of forming a soil cement wall carried out in the procedure such that a cutter post provided on a trencher type excavat... | 05/07/2002 |
| 6318952 | Pipe laying tool A tool for attachment to a working end of an excavator arm for use in supporting a pipe section while lowering it into a trench. The tool has a proximal end from which extends an elongated arm, held in an approximately horizontal position when in use. A v... | 11/20/2001 |
| 6247540 | Blade pitch indicator A blade pitch indicator is releasably secured to a linear actuator in the form of a turnbuckle. The blade pitch indicator comprises a cover having protrusions forming arrow points that line up with a line of demarcation on the linear actuator. Indicia is ... | 06/19/2001 |
| 5743031 | Digging hardware signaling apparatus An apparatus for providing a signal indicative of loss or imminent loss of digging hardware normally arranged in operable association with an earth working implement.... | 04/28/1998 |
| 5692855 | Automatic quick-connect coupler for implements The coupler is attached to the boom of a tractor or other vehicle and enables the boom to be quickly and automatically connected to an implement such as a loader bucket. The coupler includes spring-loaded and laterally shiftable pins which automatically l... | 12/02/1997 |
| 5467542 | Coupling assembly and actuating mechanism therefor An assembly for coupling a maneuvering member to a working implement generally consisting of a first coupling component mountable on the working tool, a second coupling component mountable on the maneuvering member and cooperative with the first coupling ... | 11/21/1995 |
| 5450909 | Grade determining method and apparatus A method and apparatus for determining the degree of grade ( slope ) upon which an earth moving machine is operating wherein a movable sighting device is mounted on the machine in such manner that the forces of gravity cause the device to move such that a... | 09/19/1995 |
| 5371959 | Pointing device carried by digging arm of excavator, for dynamically indicating location and direction of extension of underground cable A pointer intended for attachment to the digging arm of an excavator, is characterized by an elongated arm which can be pivoted on the digging arm using a drive whose driving movements are activated and controlled by the magnetic field generated by an und... | 12/13/1994 |
| 5242246 | Surface remediator A soil surface remediation apparatus useful for decontamination of oil or chemical spill sites and toxic waste containing sites comprises a soil treatment apparatus mounted on a mobile trenching machine tractor which excavates trenches in a contaminated s... | 09/07/1993 |
| 5237761 | Rotary ditcher having ripper blades A rotary ditcher has a flywheel type rotor carrying impeller blades that pick up and throw soil to the side of the rotor as the rotor is advanced into a body of soil in the direction of its axis of rotation. In advance of the rotor are two ripper blades t... | 08/24/1993 |
| 5010962 | Indicating apparatus for a coupling Certain earthworking vehicles are often provided with the ability to change work implements to enable them to perform a variety of operations. In many instances, the coupling mechanism between the work implement and the frame structure of the vehicle that... | 04/30/1991 |
