Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8015733 | Walk-behind trenching machine A walk-behind trenching vehicle incorporating a trenching boom with an endless trenching chain. The trenching boom may be connected to a forward end of the vehicle via a dual pivot mechanism. The boom may be movable between an operating position and a transport posi... | 09/13/2011 |
| 7805864 | Walk-behind trenching machine A walk-behind trenching vehicle incorporating a trenching boom with an endless trenching chain. The trenching boom may be connected to a forward end of the vehicle via a pivot joint that is offset from a drive axis of the trenching chain. The boom may be movable bet... | 10/05/2010 |
| 7654017 | Trenching attachment having an internal combustion engine A trenching attachment for selective attachment to a working machine features a frame arranged for selective connection to the working machine, an internal combustion engine mounted to the frame and a boom assembly connected to the frame and having a trencher chain ... | 02/02/2010 |
| 7644524 | Walk-behind trenching machine A walk-behind trenching vehicle incorporating a trenching boom with an endless trenching chain. The trenching boom may be connected to a forward end of the vehicle via a pivot joint that is offset from a drive axis of the trenching chain. The boom may be movable bet... | 01/12/2010 |
| 7409785 | Cutting element supported on a chain In a chain excavator including an excavation chain with links routed around a drive sprocket and an end idler with a base plate mounted to a link for supporting excavation implements, a stabilizing element extends rearwardly from directly behind the excavation imple... | 08/12/2008 |
| 7363733 | Device and method for making a trench wall in the soil The invention relates to a device for making a trench wall in the soil comprising a frame, at least one lower cutting/mixing wheel arranged at the bottom of the frame, at least one further, upper cutting/mixing wheel arranged at the top of the frame, wherein the fra... | 04/29/2008 |
| 7290360 | Excavation apparatus An excavating apparatus having a prime mover with a longitudinal centerline and a main frame with an engine, a ground drive system and an excavation boom operatively attached thereto wherein the excavation boom has a first end and a second end. The first end of the ... | 11/06/2007 |
| 7246457 | Construction machine with a quick coupler The invention relates to a construction machine with a quick coupler for the coupling of a tool to a boom having a quick coupling part on the boom side and a quick coupling part on the tool side having a power circuit coupling, in particular a hydraulic coupling, ha... | 07/24/2007 |
| 7152348 | Excavation apparatus An excavating apparatus having a prime mover with a longitudinal centerline and a main frame (30) with an engine, a ground drive system and an excavation boom operatively attached thereto wherein the excavation boom has a sub-frame (112) with a first e... | 12/26/2006 |
| 7150115 | All earth foundation trencher An all-earth foundation trencher has a digger body (1) pivotal selectively on a track-laying chassis (7). The digger body has an earth-mover blade (16) that is manipulatable multi-directionally on a front end. A digger boom (19) has a bas... | 12/19/2006 |
| 7114271 | Cutting tool for digging trenches, and enabling the cutter head to be changed quickly The invention relates to a cutting tool for digging vertical trenches, the tool comprising: a jib (B); a cutter structure (34; C) suspended from the jib via a cable; a plurality of cutter me... | 10/03/2006 |
| 7096609 | Trencher unit The trencher unit of the present invention mounts to a standard loader attachment fitting and relies on the auxiliary hydraulic power of a loader. A powered chain drive sprocket is mounted near the upper end of the trencher unit. An idler wheel is mounted at the bot... | 08/29/2006 |
| 7055270 | Cutting element supported on a drum In a chain excavator including an excavation chain with links routed around a drive sprocket and an end idler with a base plate mounted to a link for supporting excavation implements, a stabilizing element extends rearwardly from directly behind the excavation imple... | 06/06/2006 |
| 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 |
| 6925736 | In situ mixing apparatus and methods for creating underground wall Methods and apparatuses are provided for constructing an underground wall in a trench, include using multiple chains on an endless chain cutter and individually controlling the speed and/or direction of the chains, various configurations of cutter bits and agitator ... | 08/09/2005 |
| 6860043 | Shroud for a digging machine A shroud for digging machines is provided with a generally elongated panel of flexible material. A pair of brackets secures the opposite end portions of the panel to the frame of a digging machine, adjacent its ground engaging features. The flexible panel is positio... | 03/01/2005 |
| 6832443 | Cutting chain The invention is directed to an endless cutting chain for an underground trenching assembly that has a plurality of cutter links with a strap link joining adjacent cutter links. Each cutter link has a pair of side plates and a support member bridging the side plates... | 12/21/2004 |
| 6804903 | Excavator with trenching attachment An undercarriage having tracks or the like is attached thereto is provided for moving the undercarriage along the ground. A turret is attached to the undercarriage along a first substantially vertical axis so that the turret can rotate. A backhoe is pivotally attach... | 10/19/2004 |
| 6789336 | Laterally adjustable, low profile trench-digging machine A trench-digging machine is provided that includes a digging implement capable of being laterally offset beyond the bounds of the transport machine, thereby enabling the trench-digging machine to dig trenches that are laterally offset from the transport machine. The... | 09/14/2004 |
| 6658767 | Trenching method and apparatus Trenching apparatus comprises a cutting device, preferably an endless chain cutter, mounted on a prime mover for positioning the cutting device in a trench with the prime mover movable on the ground surface above the level of the trench. Where the cutting... | 12/09/2003 |
| 6658768 | Trencher The trencher includes a wheeled carriage which has a steering mechanism and a digging which operates along an upright path. The trencher includes an upright boom structure that is mounted to the carrage and a digging chain support frame that can be raised... | 12/09/2003 |
| 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 |
| 6536143 | Wide multiple-chain trenching machine A multiple-chain trenching machine comprises a prime mover with a trenching head assembly operably connected thereto, the head comprising: a) a frame operably connected to the prime mover at a proximal end; b) one or more pairs of proximal and distal prim... | 03/25/2003 |
| 6470607 | Excavating method for constructing underground walls A method is provided for constructing an underground wall in a trench, include using multiple chains on an endless chain cutter and individually controlling the speed and/or direction of the chains, various configurations of cutter bits and agitator bars ... | 10/29/2002 |
| 6421938 | Endless chain type cutter An endless chain provided with groups of cutter elements thereon, for cutting a ditch in the ground, the cutter elements of each group, together being arranged to cut the ground throughout the width of the ditch. In excavating a ditch the cutter is advanc... | 07/23/2002 |
| 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 |
| 6415532 | Drive sprocket for a roller chain for material removal implement A sprocket is disclosed for driving a chain with a plurality of chain rollers. The sprocket may be used to drive a material removal chain of a trencher. The sprocket has various cut-aways or reliefs on each face thereof to more effectively clear particula... | 07/09/2002 |
| 6397501 | Wide multiple-chain trenching machine A multiple-chain trenching machine comprises a prime mover with a trenching head assembly operably connected thereto. The trenching head may be raised, lowered, and/or pivoted relative to the prime mover, and comprises: a) a frame operably connected to th... | 06/04/2002 |
| 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 |
| 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 |
| 6354026 | Trench rig A trench rig (1) for excavating continuous monolithic brattices or bases, presenting a self-propelled crawler truck (2), a chain-driven excavating tool (6) provided with a central column (9) which extends along a working axis (A), and a control unit (8) f... | 03/12/2002 |
| 6336280 | Self-propelled rotary excavator A self-propelled rotary excavator having a plurality of booms forming a boom assembly attached to a chassis, with a rotary cutting device attached to the end of the boom assembly. The boom assembly positions the rotary cutting device at a desired position... | 01/08/2002 |
| 6289613 | Ejector mechanism for an excavating wheel used in a dredging operation and associated method An ejector mechanism (20) adapted for use on a dredging apparatus (10) to remove silt from under the surface of a body of water and associated method, the dredging apparatus being operative in a forward and reverse direction and including first (32) and s... | 09/18/2001 |
| 6219945 | Excavating method A method of excavating an underground continuous ditch by rotating a chain type cutter 4 while pressing the cutter horizontally against the ground A, with the cutter positioned underground. According to this method, when a lower ground portion is left une... | 04/24/2001 |
| 6209233 | Safeway deep utility ditch cleaning machine A ditch cleaning apparatus is formed by a prime mover driving a chassis having endless metal belts for moving along the bottom of a vertical wall ditch and supporting an upright frame having a rearwardly and upwardly inclined elevator depositing debris on... | 04/03/2001 |
| 6193444 | In-situ blending and transferring of earth materials A method and apparatus for blending and transferring earth material at a blending site. The apparatus has a sinking shank mounted on the end of a boom of a working machine. Two cutter drums are mounted in spaced relation on the end of the shank for rotati... | 02/27/2001 |
| 6189244 | Self-cleaning narrow ditch trencher and flexible tile installer A narrow-trench earth trencher and flexible tube installer, including a relatively large diameter narrow driven sprocket connected by a chain with attached earth cutters to a relatively small drive sprocket. The trencher includes a carriage frame adapted ... | 02/20/2001 |
| 6154987 | Cutting tooth for a trencher chain The present disclosure relates to a cutting tooth for a trencher chain. The tooth includes a base portion aligned along a first plane. The base portion includes structure for allowing the cutting tooth to be connected to the trencher chain. The tooth also... | 12/05/2000 |
| 6154988 | Machine for digging under pipes and caterpillar traction device The present invention is for a machine for digging under pipes, wherein the machine comprises a frame having a caterpillar drive traction device mounted thereon, as well as left and right end effectors. The end effectors are each made in the shape of a mo... | 12/05/2000 |
