Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7370714 | Power-dividing device and axle-driving device for a working vehicle A power-dividing device for a working vehicle includes a case member, an input shaft supported by the case member so that a first end portion of the input shaft can be operatively connected to a driving source, a PTO unit having a PTO shaft supported by the case mem... | 05/13/2008 |
| 7284345 | Milling device for floors, rock, excavated material or other material The milling apparatus (1) has a bucket with a receiving chamber and has a milling unit with a milling rotor (14). The receiving chamber has a receiving opening (4) and is embodied as a bucket (2). On the bottom of the bucket (2), a... | 10/23/2007 |
| 7273150 | Portable screening machine A portable screening trommel having a chassis, at least one wheel assembly at a rear portion of the chassis, a hopper for receiving a material, a rotary trommel being chain driven at a discharge end and which receives the material from a feed conveyor beneath the ho... | 09/25/2007 |
| 7200981 | Support wheel arrangement for agricultural working machine, and agricultural working machine provided therewith A supporting arrangement for an agricultural working machine with at least one receiving device for receiving an agricultural working device has at least one support wheel arrangeable in a region facing the agricultural working device, the at least one support wheel... | 04/10/2007 |
| 7178273 | Cutting device for cutting trenches in the ground A cutting device for cutting trenches in the ground having at least one cutting wheel drivable in rotary manner and at least one first cutting element, located on the cutting wheel, for removing soil material during a rotation of the cutting wheel in one rotation di... | 02/20/2007 |
| 6625908 | Apparatus for digging a trench An apparatus for digging a trench including a cutter device for cutting through a ground surface and a guide with a loading end located rearwardly of the cutting device and adapted for guiding earth from the loading end to an off loading end as the appara... | 09/30/2003 |
| 6418646 | Machine for digging into the lower layers of the ground The present invention relates to a machine for digging into the lower layers of the ground, wherein said machine comprises the following members: a base frame (1), a ground excavator (2) and a driving chain-type working organ (3) that is suspended from th... | 07/16/2002 |
| 6357150 | Spade wheel apparatus for dredging equipment and associated method A rotating drive wheel assembly for steering and maneuvering a dredging apparatus includes a carrier wheel and an orientation wheel connected to opposite ends of a pivotation member. A plurality of spade devices are connected to the wheels, each including... | 03/19/2002 |
| 6014825 | Bucket wheel excavator A bucket wheel excavator has a scraper blade mounted on the bogie and whose height is independent of the raising and lowering of the bucket wheel to maintain a level track for the crawler bogie. The scraper blade can be tilted about a horizontal axis by a... | 01/18/2000 |
| 5960570 | Apparatus and method for removing silt from under a body of water A silt removal apparatus is provided for removing silt from under a body of water. The silt removing apparatus includes a silt removing wheel rotatably mounted on a floatation arrangement. The silt removing wheel has a plurality of silt retaining chambers... | 10/05/1999 |
| 5903989 | Overload protector mechanism for shield mechanism of excavating wheel An overload protector mechanism provides protection for an excavating wheel shield mechanism so that if a large foreign object becomes lodged between the excavating wheel and a portion of the shield arrangement the shield mechanism can move out of the way... | 05/18/1999 |
| 5890304 | Device for lifting, lowering and leveling booms of strip mining equipment A level boom is provided for a piece of strip mining equipment traveling on caterpillar-type chassis, which piece of equipment is temporarily moved on oblique roadways during operation. The position of the boom in relation to the skeletal structure is cor... | 04/06/1999 |
| 5873186 | Excavating machine with cleaning device An excavating machine is provided having a cleaning member for cleaning spoil out of an earth cutting device having a digging wheel assembly. The digging wheel assembly has a rim structure and a series of circumferentially spaced peripherally extended buc... | 02/23/1999 |
| 5857274 | Method of operating a bucket wheel excavator A bucket-wheel excavator has its bucket-wheel conveyor stopped when a truck is fully loaded so that a new truck can be brought into position, the continuously-operating bucket wheel filling the bucket-wheel chute with a first store of the material. After ... | 01/12/1999 |
| 5809670 | Excavating machine with grooving device An excavating machine is provided having an adjustable grooving device for forming a groove in the bottom of a trench. The excavating machine has a power unit, a supporting frame assembly operably attached to the power unit, an earth cutting device to for... | 09/22/1998 |
| 5810449 | Cutting drum for an open cast apparatus performing its winning action in both directions of travel The operative members in open pit mining apparatus, designed as strata cutting and loading machines are exposed to high wear and tear in practical operation. The cutter tools (3) are so designed that those picks (5) which are cutting are in their operatin... | 09/22/1998 |
| 5588230 | Apparatus for excavating soil using a plurality of independenity pivotable brushes An apparatus for removing soil and other debris from around buried objects. The apparatus comprises a movable frame which supports plurality of rotatable and independently mounted brushes which are used to gently sweep across the soil to remove soil and o... | 12/31/1996 |
| 5525114 | Resiliently biased endless driven sprocket chain An endless driven sprocket chain (10) includes inner links (24) which couple to outer links (26) through a resilient bushing (50). A pin (42) having a shaft (44) with a hexagonal cross sectional shape mates with a corresponding hole in outer link plates (... | 06/11/1996 |
| 5386652 | Cylinder guard A cylinder and piston rod guard attachment for a backhoe or the like. The cylinder and piston rod guard is arranged to extend over the cylinder housing and the associated piston rod as it extends therefrom to protect the extended piston rod. A U-shaped in... | 02/07/1995 |
| 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 elements formed on a circumference of the supporting elem... | 01/03/1995 |
| 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 mounted to one side of the chassis of the apparatus, and a... | 05/31/1994 |
| 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 the machine so that the machine may advance on the surface i... | 07/20/1993 |
| 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 digger outwardly mounted on the earth or material moving equ... | 06/01/1993 |
| 5152583 | Continuous-operation extraction machinery for strip mining with a cylindrical extractor A continuous-operation extraction apparatus for strip mining that is self propelled on continuous track treads. A cylindrically-shaped cutting extractor has cutting tools arranged on its peripheral surface. Recesses are provided in this peripheral surface... | 10/06/1992 |
| 5092659 | Continuous track-mounted, self-propelled open-cast mining machine A continuous track-mounted, self-propelled continuously operating open-cast mining machine having a drum-shaped mining device with cutting tools arranged around the circumference of the drum. The cutting drum is equipped with cutting teeth which can cut i... | 03/03/1992 |
| 5058294 | Grade control system for continuous bucket excavators This invention pertains to method and apparatus for accurate control of the cutting depth and grade for mobile excavating system excavators having a continuous bucket excavating system mounted at the leading end of a structural main frame. Such excavators... | 10/22/1991 |
| 5048668 | Mounting and driving mechanism for a driving gear A paddle wheel, bulk-goods pick-up and moving device is disclosed, which picks up bulk goods from a storage container and deposits the same into the paddle wheel's interior. The device is provided with a motor-driven driving gear provided with a coaxially... | 09/17/1991 |
| 4979781 | Bench mining method and apparatus A method and apparatus for bench mining employs a rotating wheel excavator with excavator wheel positioned outwardly to one side of a tractor unit for the excavator so that the tractor unit draws the excavation wheel along a bench line or cut line between... | 12/25/1990 |
| 4966418 | Front-loading cutting device for cutting up damaged road surfaces This invention relates to a front-loading cutting device for cutting up damaged road surfaces, having a self-driving chassis, a pair of front wheels and a pair of rear wheels, a cutting cylinder which is height-adjustable in relation to the chassis and a ... | 10/30/1990 |
| 4960306 | Open-cut mining cutter The present invention provides a crawler unit having a superstructure and a substructure and an excavating device for recovering bulk material. The excavating device has bearing regions and drive regions and also has vertically arranged shearing drums for... | 10/02/1990 |
| 4955151 | Bucket wheel with overhead discharge An excavating bucket wheel has a plurality of radially outwardly open bucket chambers disposed in a circular array. During rotation of the bucket wheel each chamber cyclically assumes a material receiving position and a material dumping position. Each buc... | 09/11/1990 |
| 4912862 | Backfill machine The invention comprises a mobile backfilling machine wherein raw materials located adjacent an excavated trench are picked up, graded and delivered to the open trench in an order of size grading from finest to coarsest, thereby providing a fine material p... | 04/03/1990 |
| 4872275 | Ditch cleaning machine A ditch cleaning machine is for a longitudinally extending ditch having in a vertical trapezoidal transverse cross-section a greater width at the top than at the bottom and having slanting side walls. The machine has a steerable main frame ground-supporte... | 10/10/1989 |
| 4871213 | Excavating apparatus with adjustable breaker bar 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 of boom arms. The boom arms are pivotally mounted relative ... | 10/03/1989 |
| 4858347 | Continuous excavating apparatus and methods Excavating apparatus and methods for breaking and removing material away from an upright face of material are disclosed. The apparatus employs a rotary cutter for dislodging material from the face. A collector pan extends transversely across the front end... | 08/22/1989 |
| 4848844 | Overburden excavator The two ends of the luffable and swivelable arms of the gantry of an overburden excavator each have a horizontal bolt for a frame of the drive, on the axis of rotation or drive shaft of which is mounted a rotary cutter in the form of a cutter drum. The ro... | 07/18/1989 |
| 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 of boom arms. The boom arms are pivotally mounted relative ... | 11/22/1988 |
| 4755001 | Road planar A digging machine for planing a road. The machine has a massive main frame supported by large endless tracks. An elongated digging member has spaced shafts located at the opposed ends thereof. One of the shafts pivotally supports the digging member from t... | 07/05/1988 |
| 4737061 | Mobile bucket conveyor for bulk materials A mobile bucket mechanism for collection and conveyance of a bulk material which includes buckets carried by chains over generally vertically arranged sheaves, a support structure for the sheaves which drives the chains to move the buckets in a path to co... | 04/12/1988 |
| 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 base pivot axis to position the cutting head to either sid... | 12/22/1987 |
