Digging Chain, Bucket, Blade, Or Tooth Structure, Per Se Patents (Class 37/465)
  • Patent number: 8869972
    Abstract: An improved flight assembly for an elevator used with a wheel tractor scraper is provided. The flight assembly comprises a support member made of one type of material and an edge plate made of a second type of material that is harder and less flexible than the support member material. The edge plate is mounted to the support member and includes the cutting/digging edge of the flight assembly. In one embodiment the support member is made of a rolled steel material having a hardness of about 205 BHN and the edge plate is made of a hardened, heat treated steel material having a hardness of between about 360 BHN and about 440 BHN.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: October 28, 2014
    Assignee: Caterpillar Inc.
    Inventor: Ashish A. Shah
  • Patent number: 8707589
    Abstract: An excavator bucket including containment portion and associated attachment means in order to attach the bucket to a piece of earthmoving equipment, the containment portion defined by a base wall, an opposed top wall, and a pair of opposed sidewalls located between the base wall and top wall, each of these walls having a forward edge together defining an opening to the containment portion, and a rear wall wherein the base wall, top wall and each side wall taper rearwardly to the rear wall.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: April 29, 2014
    Assignee: ESCO Engineering Pty. Ltd.
    Inventor: Michael John Hilton
  • Patent number: 8608410
    Abstract: Unit plates are supported by unit frames connected consecutively together for turning about axes being remote from and crossing a longitudinal axis of the frames with the ability to alternately be shifted about the turning axes by rams coupled between the plates and frames and expanded while the frames are shifted continuously. The front frame supports alternately a face-and-end pumping mill, facing disk or wedge or endless chain cutter. A ski tenon supported on the front end of the front frame that is able to be engaged with a ski-trak means of adjacent from behind the same unit frames for relative turning about the axes and disengaged in the trench.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: December 17, 2013
    Inventors: Vladimir Anatol Shreider, Natalia Shreider
  • Patent number: 8250786
    Abstract: In one aspect of the present invention, a method of excavation with pointed cutting elements, comprising the steps of providing a excavating assembly with at least one pointed cutting element, the pointed cutting element comprising a rounded apex that intersects a central axis, the pointed cutting element further has a characteristic of having its highest impact resistance to resultant forces aligned with the central axis; engaging the at least one pointed cutting element against a formation such that the formation applies a resultant force against the pointed cutting element; determining an angle of the resultant force; and modifying at least one excavating parameter to align the resultant force with the pointed cutting element's central axis.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: August 28, 2012
    Inventors: David R. Hall, Ronald B. Crockett, Thomas Morris
  • Patent number: 8240070
    Abstract: Molded polymer elevator buckets are reinforced by tapering the thickness of front and sidewalls and integral arcuate corner parts to improve bucket life without significant weight increase or reduced bucket capacity. Front lip wear indicators may be molded into the front wall section delimited by the lip and/or on the arcuate corner parts.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: August 14, 2012
    Assignee: Maxi-Lift, Inc.
    Inventors: Paul D. Phillips, Jon D. Fisher, Victor A. Sahm, III
  • Patent number: 8209888
    Abstract: Trenching chains and chain links are disclosed, the trenching chains including a plurality of chain link bodies joined at the ends thereof and a plurality of carriages each having one end pivotably attached at an end of a link body and an opposite end unengaged and freely pivotable. Cutting or trench sweeping implements are maintainable on the carriages. The carriages can thus be configured with lengths greater than the lengths of the link bodies.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: July 3, 2012
    Inventor: Jerry L. Lanser
  • Patent number: 8209889
    Abstract: An operator propelled and/or guided portable trencher is disclosed having a wheeled carriage with an operator manipulable handle bar mounted thereat. The carriage includes a wheel mounting base assembly and a drive frame assembly pivotably connected to each other. A trenching chain assembly is mounted to the drive frame assembly and has a chain maintained at a multi-sprocket chain guide. One sprocket of the chain guide is movably mounted and biased to tension the chain while allowing sprocket movement to partially relieve chain tension during chain use in case of debris entrainment at the chain. An operator manipulable support is connected with the mounting base assembly and is engageable at structure at the drive frame assembly providing operator selection of pivotable location of the drive frame assembly relative to the wheel mounting base assembly during trencher storage and use.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: July 3, 2012
    Inventor: Jerry L. Lanser
  • Publication number: 20120102791
    Abstract: An excavation component is disclosed herein. The excavation component includes a cutter structure carrier and a cutter structure carried by the cutter structure carrier. The excavation component also includes a fastener for securing the cutter structure to the cutter structure carrier. The cutter structure carrier and the cutter structure have an interlocking geometry for transferring shear between the cutter structure carrier and the cutter structure so as to reduce an amount of shear applied to the fastener during excavation operations.
    Type: Application
    Filed: July 12, 2010
    Publication date: May 3, 2012
    Applicant: Vermeer Manufacturing Company
    Inventors: Mark Cooper, Derrick Deschamp, Jeff Flahive, Dan Hawks, Glenn Meinders, Michael Vander Hart
  • Patent number: 8079163
    Abstract: A number of front working, trench filling face-compressing, inclinedly disposed sliders are arranged alternately with cutter bits on an endless chain of a trench-forming endless chain cutter on a transporting chassis, and driven with the chain by a drive means so that backward oriented, inclined facet portions of the sliders compress a filling in the trench toward and on a front working face of the wall being formed. An elongate, filling face-compressing shield is adapted to be extended down into the trench and supported with its underground portion on the underground portion of a guide post of the cutter or on the trench bottom for forward and backward oscillation by a drive means to compress the filling face adjacent to the shield. The compacted filling is in these ways being formed by horizontal pressure.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: December 20, 2011
    Inventors: Vladimir Anatol Shreider, Natalia Shreider
  • Patent number: 8061065
    Abstract: A number of slot filling-compressing members are inserted from a framework into and across a slot-shaped excavation at ahead of a frontal face of a continuous, compacted slot filling being formed along the slot, and moved with a drive means connected to the members for intermittently forcing portions of the members against the filling to compress the filling adjacent to the members longitudinally against the face. The compacted filling is in this way formed by longitudinal pressure. The members can be mounted for forward or reciprocating movement in directions along and across the face.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: November 22, 2011
    Inventors: Vladimir Anatol Shreider, Natalia Shreider
  • Patent number: 8051588
    Abstract: The invention relates to a cutting tooth for a trench wall cutter having a tongue-shaped tooth base for reception in a cutting wheel, whereby the tongue-shaped tooth base has a circumferentially surrounding holding groove, and at least one cutter which is arranged at the head-side of the tooth base. Provision is made for the cutting tooth with the tooth base and the cutter to be designed mirror-symmetrically to a plane of symmetry so that at least two opposite arranged cutters are present on the tooth base.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: November 8, 2011
    Assignee: Bauer Maschinen GmbH
    Inventor: Wilhelm Ruby
  • Publication number: 20110119965
    Abstract: Trenching chains and chain links are disclosed, the trenching chains including a plurality of chain link bodies joined at the ends thereof and a plurality of carriages each having one end pivotably attached at an end of a link body and an opposite end unengaged and freely pivotable. Cutting or trench sweeping implements are maintainable on the carriages. The carriages can thus be configured with lengths greater than the lengths of the link bodies.
    Type: Application
    Filed: November 20, 2009
    Publication date: May 26, 2011
    Inventor: Jerry L. Lanser
  • Publication number: 20110119966
    Abstract: An operator propelled and/or guided portable trencher is disclosed having a wheeled carriage with an operator manipulable handle bar mounted thereat. The carriage includes a wheel mounting base assembly and a drive frame assembly pivotably connected to each other. A trenching chain assembly is mounted to the drive frame assembly and has a chain maintained at a multi-sprocket chain guide. One sprocket of the chain guide is movably mounted and biased to tension the chain while allowing sprocket movement to partially relieve chain tension during chain use in case of debris entrainment at the chain. An operator manipulable support is connected with the mounting base assembly and is engageable at structure at the drive frame assembly providing operator selection of pivotable location of the drive frame assembly relative to the wheel mounting base assembly during trencher storage and use.
    Type: Application
    Filed: June 16, 2010
    Publication date: May 26, 2011
    Inventor: Jerry L. Lanser
  • Patent number: 7854078
    Abstract: In one aspect of the invention, a chain assembly comprises a boom comprising a sliding surface and a plurality of chain links adapted to slide along the sliding surface. At least one polycrystalline ceramic enhanced insert at an interface between the chain links and at least a portion of the sliding surface.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: December 21, 2010
    Inventors: David R. Hall, Ronald Crockett, Sigmar Tobias, Tyson J. Wilde
  • Patent number: 7698839
    Abstract: Molded polymer elevator buckets are reinforced by tapering the thickness of front and sidewalls and integral arcuate corner parts to improve bucket life without significant weight increase or reduced bucket capacity. Front lip wear indicators may be molded into the front wall section delimited by the lip and/or on the arcuate corner parts.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: April 20, 2010
    Assignee: Maxi-Lift, Inc.
    Inventors: Paul D. Phillips, Jon D. Fisher, Victor A. Sahm, III
  • Publication number: 20100088931
    Abstract: A link for a cutting chain comprises a reduced number of parts including a body section and a journal pin. A plurality of links can be joined to form the cutting chain. The cutting chain can be used on a trenching machine having a boom encircled by an endless chain. The link includes a top surface for the placement of cutting teeth. The link increases the freedom of cutting teeth placement, can extend the useful life of the cutting chain and the drive sprocket, can reduce thermal cracking and failure, and can resist lateral forces that would force the cutting chain from the boom.
    Type: Application
    Filed: August 29, 2009
    Publication date: April 15, 2010
    Applicant: Time Machine, Inc.
    Inventors: Wayne L. Edmonson, Michael W. Latchaw
  • Patent number: 7665235
    Abstract: An endless chain for cutting and removing spoil from a trench includes a plurality of links pivotally coupled together. A plurality of flight plates are secured to the plurality of links. A pattern of openings extends through each flight plate between the under surface and the outer surface. A plurality of wear plates is positioned over the outer surface of the plurality of flight plates. A plurality of fasteners pass from the under surface of the flight plate through at least some of the pattern of openings in the flight plate and into the wear plate to secure the wear plate to the flight plate. The fasteners securing the wear plates to the flight plates can have outer ends that terminate short of the outer surface of the wear plates in openings in the under surface of the wear plate. Sockets, which include bores receiving cutting elements, can be fixed to the wear plates with a bottom surface of the socket either angled with respect to or flush with the wear plate outer surface.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: February 23, 2010
    Assignee: Keystone Engineering and Manufacturing Corporation
    Inventor: Winchester E. Latham
  • Publication number: 20100011628
    Abstract: In one aspect of the invention, a chain assembly comprises a boom comprising a sliding surface and a plurality of chain links adapted to slide along the sliding surface. At least one polycrystalline ceramic enhanced insert at an interface between the chain links and at least a portion of the sliding surface.
    Type: Application
    Filed: July 15, 2008
    Publication date: January 21, 2010
    Inventors: David R. Hall, Ronald Crockett, Sigmar Tobias, Tyson J. Wilde
  • Patent number: 7628424
    Abstract: The present disclosure relates generally to improved chains for use with trenching machines. The present disclosure relates more specifically to a chain for a boomed trenching excavator, the chain including a plurality of links hingedly connected to each other. Each link includes a one piece body with an inner surface for engaging the boom and an outer surface for engaging the ground. Each link also includes a pair of side extensions for engaging a drive sprocket of the boom. One or more teeth may be mounted to the outer surface. The present disclosure also relates to a blank from which the links for an excavator chain may be made and to a link which may be used with other links to form an excavator chain.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: December 8, 2009
    Assignee: Innerworx, LLC
    Inventors: Jeff Seidl, Troy Ullmer
  • Patent number: 7617621
    Abstract: A trenching chain tooth for cutting ice features a support portion projecting laterally from a mounting portion. A first cutting portion projects to a side of the support portion opposite the mounting portion. A second cutting portion projects laterally from the first cutting portion to the same side as the support portion at a distance therefrom. Each cutting portion features a cutting edge near a leading end of the supporting portion. The cutting edge of the second cutting portion extends obliquely away from that of the first cutting portion toward a trailing end of the supporting portion. Each cutting portion feature stainless steel and, in direction extending away from its respective cutting edge, extends toward the mounting portion. A chain trencher equipped with teeth of this type is positioned a over a body of ice and operated to cut into the body of ice with the trenching teeth from thereabove.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: November 17, 2009
    Inventor: Dieter Schwede
  • Patent number: 7565757
    Abstract: 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 implement in order to contact and be supported by its trailing base plate.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: July 28, 2009
    Assignee: Vermeer Manufacturing Co.
    Inventors: Dean Whitten, Dan Hawks, Mark Cooper
  • Patent number: 7549240
    Abstract: An excavation device having a pair of milling wheels with a substantially horizontal axis (X) of rotation. Each milling wheel peripherally equipped with an excavation apparatus to define an excavation front substantially parallel to the axis (X). The excavation device also has a chain-type transmission to draw in rotation, in a first operating condition, each of the milling wheels. The transmission is driven by a motor and provided, on its side which is external during use, with an excavation apparatus. The excavation device also has a thruster able to be activated to selectively move the transmission into a second operating position, widened and external with respect to the first operating condition.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: June 23, 2009
    Assignee: Casagrande SpA
    Inventor: Mauro Casagrande
  • Patent number: 7454851
    Abstract: 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 implement in order to contact and be supported by its trailing base plate.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: November 25, 2008
    Assignee: Vermeer Manufacturing Company
    Inventors: Dean Whitten, Dan Hawks, Mark Cooper
  • Patent number: 7409785
    Abstract: 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 implement in order to contact and be supported by its trailing base plate.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: August 12, 2008
    Assignee: Vermeer Manufacturing Company
    Inventors: Dean Whitten, Dan Hawks, Mark Cooper
  • Publication number: 20080163523
    Abstract: The present disclosure relates generally to improved chains for use with trenching machines. The present disclosure relates more specifically to a chain for a boomed trenching excavator, the chain including a plurality of links hingedly connected to each other. Each link includes a one piece body with an inner surface for engaging the boom and an outer surface for engaging the ground. Each link also includes a pair of side extensions for engaging a drive sprocket of the boom. One or more teeth may be mounted to the outer surface. The present disclosure also relates to a blank from which the links for an excavator chain may be made and to a link which may be used with other links to form an excavator chain.
    Type: Application
    Filed: December 10, 2007
    Publication date: July 10, 2008
    Inventors: Jeff Seidl, Troy Ullmer
  • Patent number: 7290360
    Abstract: 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 boom is operatively pivotally attached to the main frame along a main frame pivot axis. The main frame pivot axis is transverse to the longitudinal centerline of the prime mover. A head shaft operatively rotatably attached to the second end of the boom and is operatively pivotally attached to the second end of the boom. Also, the excavation drum is mounted onto the head shaft in a manner that the excavation drum cooperates with the excavation chain and a fixed cutter pattern of the excavation chain to stay in consistent alignment with the fixed cutter pattern of the excavation drum.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: November 6, 2007
    Assignee: Vermeer Manufacturing Company
    Inventors: Mark Unzicker, Mark Cooper
  • Patent number: 7152348
    Abstract: 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 end and a second end. The first end of the sub-frame (112) is operatively pivotally attached to the main frame (30) along a main frame pivot axis (114). The main frame pivot axis is transverse to the longitudinal centerline of the prime mover. A head shaft (150) operatively rotatably attached to the second end of the sub-frame (112) along a head shaft axis (151) and the head shaft axis (151) is transverse to the longitudinal centerline of the prime mover. An excavating drum (148) is operatively attached to the head shaft (150) for rotation about the head shaft axis (151).
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: December 26, 2006
    Assignee: Vermeer Manufacturing Company
    Inventors: Mark Unzicker, Mark Cooper
  • Patent number: 7055270
    Abstract: 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 implement in order to contact and be supported by its trailing base plate.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: June 6, 2006
    Assignee: Vermeer Manufacturing Co.
    Inventors: Dean Whitten, Dan Hawks, Mark Cooper
  • Patent number: 6990390
    Abstract: Method and apparatus to detect a change in a work tool with an engaging portion. A control system senses a change in the relationship between the engaging portion of the work tool and at least one of the work tool and another engaging portion of the work tool. If the change is greater than a predetermined value, the control system produces an error signal.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: January 24, 2006
    Assignee: Caterpillar Inc.
    Inventors: Ronald O. Groth, Carl A. Kemner, N. Keith Lay
  • Patent number: 6948266
    Abstract: 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 being capable of deployment substantially orthogonally to the direction of movement of said vehicle; said arm being substantially elongated and including two or more articulately connected sections (5, 6, 7) and one or more actuator means (11, 12, 13) capable of changing the orientation at least two of said sections (5, 6, 7) with respect to each other. The invention is also suitable as a means of shaping embankments or features of earth, soil, sand and so forth or for cutting grass or similar undergrowth.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: September 27, 2005
    Inventors: Garry Roger Steedman, Helmut Kanzler
  • Patent number: 6860043
    Abstract: 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 positioned to receive ejected ground material and safely project it laterally from the ground engaging features to prevent the injury of individuals near the digging machine and prevent the ground material from refilling the newly formed opening in the ground. A biasing system is provided at the opposite end portions of the panel to prevent the panel from coming into contact with the ground engaging features of the digging machine.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: March 1, 2005
    Inventors: Ivan C. Heise, Carey F. Renz
  • Patent number: 6857208
    Abstract: The present invention provides a flight assembly for use on a scraper having an elevator. The flight assembly includes a lateral support member having a wear plate attached thereon. A wear cap is provided on each end of the lateral support member. The wear plates and wear caps are preferably bolted to the support member.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: February 22, 2005
    Assignee: Caterpillar Inc
    Inventors: Smita Gandhi, Paul J. Lukavich
  • Patent number: 6854201
    Abstract: A cutting tooth used on an endless chain-trenching machine to fracture and excavate the ground. The tooth includes a mounting portion for attachment to the chain and a cutting portion having a straight cutting edge at the leading end of the tooth positioned normal to the direction movement of the chain. The cutting portion is aligned from the mounting at an acute angle to the plane of the mounting portion and including convex surfaces on both sides of the cutting portion and a juncture line between the mounting portion and the cutting portion forms an acute angle with the direction movement of the chain whereby the cuttings produced by the tooth are lifted away by the chain as the chain is digging.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: February 15, 2005
    Inventors: William D. Hunter, Ronald C. Becker
  • Patent number: 6843006
    Abstract: A ditch digger is attached to the square hitch located proximate the rear bumper of a vehicle and uses a stock member that has a first section and an angled second section. A plurality of openings are located along the first section whereby a connector is attached to the stock member by passing a pin through openings on the connector and on the stock member. The connector also attaches to the vehicle. A furrowing blade is attached to the second section of the stock member as is a loop member to which electrical conduit and the like may be attached.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: January 18, 2005
    Inventor: Christopher Lee Montgomery
  • Patent number: 6839991
    Abstract: 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 implement in order to contact and be supported by its trailing base plate.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: January 11, 2005
    Assignee: Vermeer Manufacturing Company
    Inventors: Dean Whitten, Dan Hawks, Mark Cooper
  • Patent number: 6832443
    Abstract: 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. The support member has an arcuate support surface for attachment of at least one cutting member. The support member and the cutting members are adapted so as to permit substantially unrestricted selection of lateral positions of the cutting members on the arcuate support surface of the support member. Additionally, some cutter links on the cutting chain have an arcuate drag plate attached to the support member of the cutter link. The drag plate in combination with the arcuate support surface produces a cleaner round bottom trench 11. Additionally, the drag plate provides wear protection to the chain rivet heads.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: December 21, 2004
    Assignee: The Charles Machine Works, Inc.
    Inventors: Martin Roy Piel, John H. Walgren
  • Patent number: 6804903
    Abstract: 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 attached to the turret along a second substantially vertical axis. A trencher is operatively attached to the turret and occupies an area adjacent the undercarriage. Structure is provided for preventing the backhoe from moving into an area occupied by the trencher.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: October 19, 2004
    Assignee: Vermeer Manufacturing Company
    Inventor: Mark Cooper
  • Publication number: 20040060210
    Abstract: The invention provides a pin assembly and Implements connecting apparatus which can replace a working means such as a bucket or the like easily and for a short time. A first member (20) having a pair of brackets (18, 19) is connected to a second member (22) having a boss portion (21). The first member (20) and the second member (21) are connected so as to swing freely and mutually by inserting a pin assembly (17) having an outer tubular body (15) and a connection pin (16) rotatably connected thereto into one bracket (18), the boss portion (21) and another bracket (19). In the connection state, the outer tubular body (15) and the boss portion (21) are fixed. The pin assembly (17) can be pulled out by applying a pressing force to an opposite side in an inserting direction of the pin assembly (17).
    Type: Application
    Filed: September 2, 2003
    Publication date: April 1, 2004
    Inventors: Masao Nishimura, Tetsuo Ohnishi
  • Patent number: 6698115
    Abstract: A clearing chain is mounted on a mobile track maintenance machine for excavating ballast material from a track bed. The chain is composed of shovel-type clearing members for gathering the ballast and intermediate chain elements positioned between the adjacent clearing members and connected thereto by means of chain joints, thus forming an endless chain. Each intermediate chain element comprises two chain joints spaced from one another in the longitudinal direction of the clearing chain. The chain joints are designed for receiving a hinge pin articulatedly mounted in the joint and releasably fastened to the clearing member.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: March 2, 2004
    Assignee: Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H.
    Inventors: Josef Theurer, Herbert Wörgötter
  • Patent number: 6684538
    Abstract: 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 includes a distal portion that is generally obliquely aligned with respect to the first plane. A curved transition is located between the distal portion and the base portion. The curved transition curves away from the first plane and at least partially forms a cupped portion that extends from a leading end to a trailing end of the cutting tooth. The tooth also includes a hardened tip positioned at a region of the leading end that is located farthest from the first plane. The leading edge includes more than one effective configuration.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: February 3, 2004
    Assignee: Vermeer Manufacturing Company
    Inventors: Larry James Rumer, John H. Walgren, Jerome Robillard
  • Patent number: 6625908
    Abstract: 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 apparatus moves in a forward direction.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: September 30, 2003
    Inventors: Darren Cardiff, Steven Nuttall
  • Patent number: 6547337
    Abstract: A trencher with a rock saw wheel has a foldable section that may be pivoted to one side during transport of the trencher on a truck or trailer, in order to decrease the overall height of the trencher during transport, or can be removed to reduce transport weight.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: April 15, 2003
    Assignee: Tesmec USA, Inc.
    Inventor: Johnnie C. Welch, Jr.
  • Patent number: 6536143
    Abstract: 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 primary sprockets mounted on the frame; c) a primary endless-chain digging assembly engaged around each pair of primary sprockets; d) one or more pairs of proximal and distal secondary sprockets mounted on the frame; e) a secondary endless-chain digging assembly engaged around each pair of secondary sprockets. The primary chains are substantially wider than the secondary chains, and trenching head is adapted so that each of the secondary chains produces a relief slot in the leading edge of the trench. The primary chains are driven in a forward chain direction, while the secondary chains may be driven in a forward or a reverse chain direction.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: March 25, 2003
    Inventor: Joseph P. Lembcke
  • Patent number: 6508608
    Abstract: An apparatus and method are provided for treating base materials, such as ore of a leach pad in a precious metal mining operation. A tilling head of the apparatus includes a cutter having a cutting face for engaging and loosening compacted base materials. The tilling head is extended into the base material down to a tilling depth so that the cutter moves loosened base material up and over the top of the tiller apparatus before depositing it in a pile opposite the cutting face. The loosened base material is deposited a distance from the tilling head that is sufficient to create a void between the tilling head and the pile that extends down to the tilling depth to prevent the loosened base material from being disturbed by the tilling head. The tilling head can be positioned so that the cutting face undercuts the base material to thereby assist the cutter in moving the loosened base material and increase the distance between the tilling head and the pile.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: January 21, 2003
    Assignee: Tracsaw Manufacturing, Inc.
    Inventors: Ron Nilson, Thomas C. Stone
  • Publication number: 20020174574
    Abstract: The present disclosure relates to a mounting arrangement for 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 includes a distal portion that is generally obliquely aligned with respect to the first plane. A curved transition is located between the distal portion and the base portion. The curved transition curves away from the first plane and at least partially forms a cupped portion that is effective in the trenching operation. The base portion also includes a recess into which the mounting hardware can fit, to protect the mounting hardware from wear.
    Type: Application
    Filed: May 25, 2001
    Publication date: November 28, 2002
    Inventors: Jerome Robillard, Brian Kenkel, Keith A. Hoelting, James V. Reeves
  • Publication number: 20020162252
    Abstract: A hand-held, self-contained motor-driven trenching device (100) for cutting a slit or trench within a substrate is based on a chain-saw motor unit together with a purpose-built attachment. An unmodified chain-saw drive unit provides both motive force and a holder, although purpose-built units may employ other forms of motive power. A chain-driven reduction drive matches the chain-saw drive sprocket (101) speed to a suitable toothed digging chain cutting speed; the reduction drive being coupled to a sprocket wheel (102) aligned at one end of a sturdy, hardened steel blade (106) over which a heavy roller chain (200) bearing soil-cutting teeth (203) is pulled. The resulting trench is about 30-35 mm wide, up to 1 metre deep, and of indefinite length. The invention provides an optimised solution to a need for burying narrow cables, fibre-optic conduits, water pipes, and the like well into the ground.
    Type: Application
    Filed: April 22, 2002
    Publication date: November 7, 2002
    Inventors: Gordon MacDonel Fergusson, Keith Alexander Fergusson
  • Publication number: 20020139016
    Abstract: A clearing chain is mounted on a mobile track maintenance machine for excavating ballast material from a track bed. The chain is composed of shovel-type clearing members for gathering the ballast and intermediate chain elements positioned between the adjacent clearing members and connected thereto by means of chain joints, thus forming an endless chain. Each intermediate chain element comprises two chain joints spaced from one another in the longitudinal direction of the clearing chain. The chain joints are designed for receiving a hinge pin articulatedly mounted in the joint and releasably fastened to the clearing member.
    Type: Application
    Filed: March 21, 2002
    Publication date: October 3, 2002
    Applicant: FRANZ PLASSER BAHNBAUMASCHINEN-INDUSTRIEGESEL M.B.H.
    Inventors: Josef Theurer, Herbert Worgotter
  • Patent number: 6421938
    Abstract: 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 advanced horizontally at a rate such that in the time the chain has moved a distance corresponding to the length of one group of cutter elements, the cutter has moved horizontally by less than the distance by which the cutter bits project from a base plate of the cutter element.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: July 23, 2002
    Assignees: Kobe Steel, Ltd., Tomen Kenki Corporation
    Inventor: Katsumi Kitanaka
  • Patent number: 6397501
    Abstract: 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 the prime mover at a proximal end; b) one or more pairs of proximal and distal primary sprockets mounted on the frame; c) a primary endless-chain digging assembly engaged with and circulating around each pair of primary sprockets; d) one or more pairs of proximal and distal secondary sprockets mounted on the frame; e) a secondary endless-chain digging assembly engaged with and circulating around each pair of secondary sprockets. The primary chains are substantially wider than the secondary chains, and the diameters and positions of the sprockets may be such that each of the secondary chains cuts more deeply into the ground formation than the primary chains, thereby producing a narrow relief slot corresponding to each secondary chain.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: June 4, 2002
    Inventor: Joseph P. Lembcke
  • Publication number: 20020020084
    Abstract: A tilling machine having independently driven wheels and a generally V-shaped plow. Tilling machine comprises digging chain that moves between a raised position and a lowered position, a housing carried by front wheels and rear casters, a motor that drives front wheels to propel housing, a guide wheel that aligns tilling machine with trench upon a second pass, and a generally V-shaped plow, wherein the plow may be positioned on the front or the rear to collect and deposit the dirt surrounding the trench into the trench. A method of gardening/landscaping wherein a trench is dug by a first pass, soil amendments are added to the trench, and then on the second pass, the excavated dirt is plowed back into the trench and mixed with the amendments. A method of gardening/landscaping wherein vegetation cover between trenched rows is maintained thus utilizing only the ground area that is needed for planting.
    Type: Application
    Filed: October 3, 2001
    Publication date: February 21, 2002
    Inventor: David McClure