Repositionable Or Replaceable Tooth (e.g., Reversible) Patents (Class 37/454)
  • Patent number: 11603647
    Abstract: A tooth assembly having an adapter, a tooth, and a pin. The adapter and the tooth each have a first portion and a second portion. The first portion of the adapter is adapted to be combined with an earth-digging implement. The second portion of the adapter is adapted to be combined with the tooth. The second portion of the adapter has an opening adapted to receive an engagement member extending from the second portion of the tooth. The first portion of the tooth is adapted to engage the material being displaced by the implement and the second portion is adapted to be combined with the adapter. The second portion of the tooth has an opening adapted to receive an engagement member extending from the second portion of the adapter. The pin is inserted through openings in both the adapter and the tooth to secure the two components together during operation.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: March 14, 2023
    Assignee: Pengo Corporation
    Inventors: Justin Reese, Richard Willems
  • Patent number: 11365529
    Abstract: A bolt retention assembly defines a horizontal direction, a vertical direction, and a lateral direction that is perpendicular to the vertical direction and the horizontal direction. The bolt retention assembly includes an adapter including a forward abutment portion and a rearward horizontally oriented saddle portion. The adapter may also define an interior aperture. The bolt retention assembly further includes a slide including a forward threaded portion configured to fit within the interior aperture of the adapter, and a rearward horizontally oriented pronged portion configured to pass through the rearward horizontally oriented saddle portion of the adapter.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: June 21, 2022
    Assignee: Caterpillar Inc.
    Inventor: Nathan R. Bjerke
  • Patent number: 10907328
    Abstract: A female part, a retaining device and a pin system having the device. The female part and a male part, to assure the retention between the female part and a male part used in excavators and the like. The female part has a cavity and can be a wearing element, a tooth or an intermediate part (part between a point and a weld on or cast nose in a three part system) and the male part has a nose to be introduced into the cavity of the female part and this will usually be a tooth-holder, intermediate, cast nose, weld-on nose or an adapter.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: February 2, 2021
    Assignee: METALOGENIA RESEARCH & TECHNOLOGIES S.L.
    Inventors: Justo Jesus Ortiz Garcia, Joan Tuto, Francisco Perez Soria, Jorge Triginer Boixeda, Albert Gimeno Tordera
  • Patent number: 10589278
    Abstract: A wear cap for use on an earth working roil for mining, construction and public works machines such as crushers, surface miners, milling machines and the like includes a working end and a rear mounting end. The rear mounting end including a pair of top and bottom rearwardly extending protrusions, a retainer, and a cavity having side stabilizing surfaces and a top and bottom rail or groove to support the wear cap on a holder mounted to the earth working roll.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: March 17, 2020
    Assignee: ESCO GROUP LLC
    Inventors: Erik L. Johnson, Stephen M. Lafond, Cameron R. Leedham, Boyan K. Bahnev
  • Patent number: 10526769
    Abstract: A tooth with a retaining system for retaining the tooth in a receiving portion of an adapter in a cutting system comprises a first holding system to releasably retain the tooth to the adapter; and a second holding system to tension and secure the tooth with respect to the adapter.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: January 7, 2020
    Assignee: IHC Holland IE B.V.
    Inventors: Eugenius Petrus Elisabeth Marie Cleophas, Peter Cornelis Graaff, Roelof Breken
  • Patent number: 9963857
    Abstract: A wear member attachment system for an excavation implement lip can include a wear member that protects an edge of the lip, and a wear member adapter that attaches the wear member to the lip, the wear member adapter being secured to the lip by a fastener, and the wear member being secured to the wear member adapter by another fastener. A method of protecting an excavation implement lip can include securing a wear member adapter to the implement, the wear member adapter including at least one receptacle, and inserting a protrusion on a wear member into the receptacle. Another system can include a wear member that protects a forward edge of a lip, and a wear member adapter that attaches the wear member to the lip between two adjacent teeth. The wear member can comprise a shroud and the adapter can wrap about an edge of the lip.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: May 8, 2018
    Assignee: Black Cat Blades Ltd.
    Inventor: John A. Ruvang
  • Patent number: 9863125
    Abstract: An excavation tooth assembly comprising: a first tooth member including a nose portion; and a second tooth member comprising a body having opposite first and second ends and a socket extending into the body from the first end to finish at an end wall, the first and second tooth members arranged in an assembled condition where the nose portion of the first tooth member is received within the socket of the second tooth member, wherein the tooth members being configured in the assembled condition with opposed surface portions of the socket located towards the second end of the second tooth member bearing on the nose portion of the first tooth member and clearance gaps are provided between opposed surface portions of the socket located towards the first end of the second tooth member and the nose portion.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: January 9, 2018
    Assignee: Bradken Resources Pty Limited
    Inventors: Reece Attwood, David Hoad
  • Patent number: 9863126
    Abstract: Telescoped ground engaging telescoped wear and support members are provided with self-adjusting connector apparatus that releasably retains the wear member in a rearwardly telescoped orientation on the support member. In illustrated embodiments thereof, the connector apparatus includes cooperating ratchet structures operatively associated with the support and wear members and functioning to automatically re-tighten an abrasion-created loosened interfit between the wear and support members in response to a rearwardly directed operational force imposed on the wear member.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: January 9, 2018
    Assignee: Hensley Industries, Inc.
    Inventors: Isai Diaz, Brandon Dunn
  • Patent number: 9091042
    Abstract: A wear assembly for an excavator bucket comprises a cast lip, a lower wing shroud and a retaining member. The cast lip includes two upstanding wing plates. Each wing plate has a wing face on a side of the wing plate and a plate retaining formation formed on the wing face. The plate retaining formation has a plate retaining face. The wing shroud is mounted to the wing plate. The wing shroud includes a shroud retaining formation having a shroud retaining face. The retaining member includes a first bearing formation having a first face opposing and engaging the shroud retaining face, and a second bearing formation having a second face opposing and engaging the plate retaining face. The retaining member has a longitudinal axis extending between the first bearing formation and the second bearing formation. The longitudinal axis is located in a plane substantially parallel to the wing face.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: July 28, 2015
    Assignee: CQMS Pty Ltd
    Inventors: Miguel Guimaraes, Paul Heaphy, Andrew Drager, Ben Plant, Martial Vicq, GĂ©rard Weber
  • Patent number: 7913432
    Abstract: A cutting tooth assembly for a rotary cutting machine is described. The assembly includes a tooth holder adapted for mounting about the periphery of a rotating element of the rotary cutting machine, and a reversible cutting tooth, removably mounted to said tooth holder. The cutting tooth has opposed first and second cutting faces which are spaced apart along a central tooth axis extending therebetween. Each of the first and second cutting faces at least partially defines more than two cutting edges, and the cutting tooth is reversible by 180 degrees about a transverse tooth axis to dispose a selected one of the first and second cutting faces in an operable cutting position when mounted to the tooth holder.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: March 29, 2011
    Assignee: Les Equipements Prenbec Inc.
    Inventors: Charles D. MacLennan, Nick Palfy, Denis Rioux, Robert Mitchell
  • Patent number: 7818902
    Abstract: A one-piece digging tooth having a socket opening to a rear end of the tooth for receiving and accommodating at least a lengthwise portion of a nose portion of an adapter extending forward from earth working equipment. The digging tooth has a top surface and a bottom surface which angularly diverge from each other between a forward end and the rear end of the tooth and two side surfaces. The tooth further includes a longitudinally elongated and centrally disposed tine with another longitudinally elongated tine outwardly cantilevered from and disposed to opposite lateral sides of and extending generally parallel to the central tine. To enhance their penetration capability, a width and thickness of all the tines constantly diminishes as the tines longitudinally extend toward the forward edge of the tooth.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: October 26, 2010
    Assignee: H & L Tooth Company
    Inventors: Brian L. Launder, Charles Clendenning, Russell N. Drake
  • Patent number: 7658024
    Abstract: A universal digging tooth attachment apparatus adapted to be secured to a forward edge of a bucket lip of an earth moving implement. The universal digging tooth attachment has a first element with an elongate section defining a first generally planar surface for abutting and engaging along the length thereof with one face of the bucket lip of the earth moving implement and a second element. The second element has an elongate section defining a second generally planar surface for abutting and engaging along the length thereof with the bucket lip of the earth moving implement directly opposite from the elongate section of the first element. One of the first and second elements has an earth engaging tooth projecting therefrom. A slip joint operably connects the first and second elements to each other to allow for adjustment of a distance between the first and second planar surfaces to accommodate attachment of the digging tooth to implements having bucket lips of differing thicknesses.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: February 9, 2010
    Assignee: H&L Tooth Company
    Inventors: Brian L. Launder, Charles Clendenning
  • Publication number: 20090165339
    Abstract: A lateral pin type tooth point structure for working machine bucket with which rust will not be generated in the critical portions of the lateral pin; there is no need for using a special tool for removing the pin as is required with the prior art, i.e., pin removal can be made simply and easily simply by using an ordinal tool; the need for making a hammering operation in pin removal as is required with the prior art is eliminated, which gives excellency in terms of securing the safety of operator; and the lateral pin body head portion and the set bolt head portion can be protected against damage due to the contact with the soil, and the like, at the time of ground excavation by the working machine bucket.
    Type: Application
    Filed: December 17, 2008
    Publication date: July 2, 2009
    Inventor: Kiyoshi Watanabe
  • Publication number: 20080196281
    Abstract: A compactor tooth has a replaceable, ground engaging wear member mounted to a mounting block carried on the cylindrical exterior surface of a landfill-compactor wheel of a compactor machine. The mounting block has an external surface formed to engage a complementary internal cavity of the wear tip and includes a pair of circumferentially spaced sides oriented not more than 5 degrees from perpendicular to the cylindrical exterior surface of the wheel. The replaceable tip has a body with an exterior ground-engaging surface, a mounting end and a mounting-base receiving cavity opening through the mounting end. The cavity is configured to receive the mounting block thereinto and has a pair of circumferentially spaced side surfaces configured to be in close abutting relationship to a respective one of the circumferentially spaced sides of said mounting block.
    Type: Application
    Filed: October 17, 2007
    Publication date: August 21, 2008
    Inventors: Richard E. Livesay, Riaz A. Shaikh
  • Patent number: 7100315
    Abstract: A wear assembly including an adapter, a wear member, and a lock to secure the wear member to the adapter, wherein the adapter and wear member include at least one rail and corresponding groove along the nose and socket connection that are oriented at the same general inclination as one of the converging walls of the nose.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: September 5, 2006
    Assignee: ESCO Corporation
    Inventors: Christopher M. Carpenter, Robert S. Fleck, Terry L. Briscoe, Daniel R. Danks, Venkat R. Gaurav, Larren F. Jones
  • Patent number: 6986216
    Abstract: A wear assembly for attaching wear members to a lip of an excavator includes a wear member, a boss and a lock. The lip includes an inner face, an outer face, a digging edge and a series of through-holes spaced rearward of the digging edge. The bosses are each fixed to a face of the lip at a position rearward of the through-holes. The wear members each include slots to receive the boss adjacent their rear ends, and openings for receiving the locks at a position forward of the bosses. The openings are aligned with the through-holes in the lip. The lock includes a wedge and spool arrangement.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: January 17, 2006
    Assignee: Esco Corporation
    Inventors: Robert K. Emrich, Terry L. Briscoe
  • Patent number: 6892824
    Abstract: Seaweed is picked up from the surface of a beach with general purpose earth moving machinery by installing a series of fingers extending forwardly and downwardly from the blade or bucket of the machine. By driving the machine forwardly along the beach, the fingers pass through the sand and seaweed on the beach travels up the incline of the fingers. The fingers accordingly act as a separator to separate most of the seaweed from most of the sand. Several embodiments of each moving machines are adapted for seaweed handling or removal.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: May 17, 2005
    Inventor: John E. Torrey
  • Patent number: 6865828
    Abstract: The improvements provide for the lugs of the tooth to have stepped guides at the top and bottom which combine with widened end regions for greater reinforcement and with a projecting internal abutment in at least one of said lugs, capable of being guided in a corresponding straight guide of the tooth holder, being arranged, after it is mounted, so as to retain the pin from behind, which pin is arranged in a pin seating arranged generally vertically in the body of the tooth holder, with a gently curved and inclined structure.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: March 15, 2005
    Assignee: Metalogenia, S.A.
    Inventors: Javier Puevo Molino, Jorge Pallas Moreno, Nil Vallve I Bertran, Rafael Ferrer Ruiz
  • Patent number: 6837649
    Abstract: A compactor tooth has a replaceable wear tip mounted to a mounting block carried on the cylindrical exterior surface of a landfill-compactor wheel of a compactor machine. The mounting block has an external surface formed to engage a complementary internal cavity of the wear tip and includes a pair of circumferentially spaced sides oriented not more than 5 degrees from perpendicular to the cylindrical exterior surface of the wheel. The replaceable tip has a body with an exterior ground-engaging surface, a mounting end and a mounting-base receiving cavity opening through the mounting end. The cavity is configured to receive the mounting block thereinto and has a pair of circumferentially spaced side surfaces configured to be in close abutting relationship to a respective one of the circumferentially spaced sides of said mounting block.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: January 4, 2005
    Assignee: Caterpillar Inc
    Inventors: Richard E. Livesay, Riaz A. Shaikh
  • Patent number: 6810610
    Abstract: The present invention provides an edging device for an earth moving machine having a bucket including at least one receiver detachably attachable to the bucket of earth moving machine. The receiver has a plate and an attachment member for engaging the bucket. The receiver can be sized to extend substantially the width of a bucket and the edge member can be substantially co-extensive in length with the receiver. The edge member is configured to be detachably attached to the receiver, where the edge member has a leading edge for contacting the earth.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: November 2, 2004
    Assignee: Dura-Tuff Wear Products, L.L.C.
    Inventors: Jason W. Hardman, Craig R. Scharp
  • Patent number: 6799388
    Abstract: An end protector for a working element of a road grading machine or the like. The working element includes a body portion having a plurality of holes therein for holding picks that work a road surface. The end protector is held in place through the use of a vacant pick hole of the working element by a fastening element that extends through the hole.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: October 5, 2004
    Assignee: Sandvik AB
    Inventors: Steven Weaver, Michael Andrew McLean, Mark James Truebody
  • Patent number: 6490816
    Abstract: A tooth cap for construction machinery having a chisel-shaped body formed with a socket and a wedge-shaped portion extending from the socket and having a pair of mutually converging working flanks, at least one of the working flanks being formed with a plurality of ribs.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: December 10, 2002
    Assignee: Intertractor GmbH
    Inventor: Michael Ketting
  • Patent number: 6311417
    Abstract: A bucket assembly mountable on the handle of an excavator machine and the like generally consisting of a bucket; a pair of ripper teeth mounted on the bucket for pivotal movement about a common axis; abutment surfaces disposed on the bucket for restricting the angular displacement of the ripper teeth between storage positions and operative positions; and devices for retaining the ripper teeth in their stored and operative positions, operable upon causing portions of such ripper teeth to engage the ground and the bucket to pivot in a selected direction relative to the handle, to release the ripper teeth.
    Type: Grant
    Filed: January 11, 2000
    Date of Patent: November 6, 2001
    Assignee: Rockland, Inc.
    Inventor: Samuel S. Pratt
  • Patent number: 6119378
    Abstract: A system for rapid and easy replacement of sacrificial machine parts, utilizing an adapter having a slot and a retainer pin fitted with at least one spring-loaded ball bearing suitable for engaging the slot when the retainer pin is inserted into the adapter.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: September 19, 2000
    Inventor: Sherlock Pippins
  • Patent number: 6079132
    Abstract: A multipiece excavating tooth assembly including an adapter and an excavating tooth. A fastener releasably interconnects and maintains the excavating tooth in operable combination with the adapter. When assembled, an elongated nose portion of the adapter extends into a blind cavity defined by and which opens to a rear end of the excavating tooth. The adapter and tooth define a pair of fore-and-aft spaced stabilizing lands for advantageously transferring impact forces imparted to the tooth assembly during an excavating operation. Each stabilizing land on the tooth assembly is comprised of a pair of generally horizontal flats arranged in confronting relation relative to each other when the excavating tooth is arranged in operable combination with the adapter. Each stabilizing land further includes a generally vertical stabilizing wall arranged in at least partially surrounding relation relative to the flat.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: June 27, 2000
    Assignee: H&L Tooth Co.
    Inventor: Charles Clendenning
  • Patent number: 6052927
    Abstract: A system for increasing the life of replaceable or sacrificial machine parts by providing an attachment device with controlled clearances results in substantial increases in the life of the sacrificial machine part under conditions of repeated shock loading.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: April 25, 2000
    Inventor: Sherlock Pippins
  • Patent number: 6023863
    Abstract: A frost hook attachment for fixed attachment of connection between a quick-coupler on the outer boom of a back-hoe and the back-hoe bucket, wherein force from the back-hoe boom is transmitted from the quick-coupler to the frost hook and thence to the bucket to which the frost hook is attached, the bucket and frost hook rotating in unison about the main pivotal axis of the bucket.
    Type: Grant
    Filed: February 7, 1998
    Date of Patent: February 15, 2000
    Inventor: Steven D. Mahin
  • Patent number: 5947209
    Abstract: A shank and replaceable tip of a ground working implement are defined from flat plate which is cut by laser or similar or is stamped to provide interconnecting elements between the replaceable tip and the lower end of the shank. At the lower end of the shank is provided a pocket defined by a recess cut into the lower end and a pair of plates welded on respective sides of the flat plate so that the projection of the replaceable tip extends into the pocket to hold the tip in place. This allows a rugged construction of the tip and various designs of tip can be manufactured simply by reprogramming the cutting process. A guide surface is mounted on the front plate of the shank with that guide surface defining a channel member with a leading edge increasing in radius of curvature from the lower end of the shank upwardly to a top of the guide surface spaced upwardly from the ground. This increase in width of the guide surface assists in discarding trash.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: September 7, 1999
    Inventors: Christopher J. Halford, James W. Halford
  • Patent number: 5806216
    Abstract: Apparatus is provided for protecting a base edge of a ground engaging implement of a work machine from wear. The apparatus includes a base edge cover and retaining apparatus of a construction adapted for time saving removal and installation. A mounting base is carried on the upper face of the base edge and has opposite sides and a outwardly opening cavity. The cavity has a concave frontal face thereon and a retainer opening through the one side in registry with the concave frontal face. A hook portion is provided on the base edge cover, which is adapted to be received within the cavity of the mounting base and positionable at a operative position where the convex face on the hook portion is disposed in a spaced opposing relation to the concave face in the cavity to define an arcuate groove therebetween.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: September 15, 1998
    Assignee: Caterpillar Inc.
    Inventor: William J. Renski
  • Patent number: 5778570
    Abstract: The excavator tooth has a tooth holder (1) on one end of which a wedge-shaped tooth nose (3) is developed. The tooth nose (3) bears a wedge-shaped tooth cap (5) in which a wedge-shaped hollow space (24) is recessed. With the tooth cap (5) mounted, the hollow space (24) is pushed over the tooth nose (3), which thus supports the tooth cap (5). For a good support, the wedge surfaces (8, 9) of the tooth nose (3) have radii of curvature curved convexly perpendicular to the longitudinal axis (16) and continuously decreasing from the tooth edge (7) to the nose root (17). In corresponding manner, the wedge surfaces (25, 26) of the hollow space (24) have concavely curved radii of curvature which continuously decrease from the base (28) to the mouth (29) of the hollow space (24). In this way a large application surface of the tooth cap (5) on the tooth nose (3) is obtained.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: July 14, 1998
    Assignee: Baz Service AG
    Inventor: Peter Eichelberger
  • Patent number: 5680717
    Abstract: An excavating bucket for rotating bucket excavators has a trough-shaped bucket having a forward edge formed by a U-shaped bucket lip. The lip has multiple shank holes and a cutting tooth in each shank hole which is removably attached to the lip. There are two sets of corner shank holes which lie on a circular line and receive a corresponding number of corner cutting teeth. Cutting portions of the corner teeth can be variously shaped so that the corner teeth can be adapted for varying cutting conditions. The cutting teeth have a weakening undercut adjacent their respective shafts so that forces acting on the teeth cause tooth deflections in the area of the recess while a remainder of the tooth, to which wear resistant layers of materials can be applied, is subjected to substantially no deflection to prevent a spalling of the wear resistant layers. An aft end of the bucket is defined by a multiplicity of side-by-side chains mounted on bars extending transversely between side plates of the bucket.
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: October 28, 1997
    Inventor: Robert S. Bierwith
  • Patent number: 5502905
    Abstract: Teeth are normally mounted on the leading edge of a earthworking implement such as a bucket to aid in the penetration of the material being worked. Furthermore, hard material has been applied to selected surfaces of teeth to increase their wear life. However, in many applications the hard material is located on the surface thereof and is subject to impacts which cause the hard material to prematurely chip away. In the subject arrangement, a symmetrical tooth is provided and has a raised lug on the top and bottom thereof each with a groove defined therein and filled with an abrasion resistant material. Since the sides of the tooth on either side of the raised lugs are thinner, they will wear at a quicker rate than the raised lugs having the abrasion resistant material disposed in the respective grooves therein.
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: April 2, 1996
    Assignee: Caterpillar Inc.
    Inventors: Gregory S. Cornelius, Dave P. Cressy, Joseph W. Puckett
  • Patent number: 5426875
    Abstract: A reversible tooth includes alternate surfaces mounting to a shank plate. The surfaces are constructed so that the attack angle of the tooth, i.e., the angle at which the tooth penetrates the earth, is changed by turning the tooth over and alternating the mounting surface secured to the shank plate.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: June 27, 1995
    Assignee: Pengo Corporation
    Inventor: Brian Rickards
  • Patent number: 5386653
    Abstract: Tooth assemblies having a tip with ears extending rearwardly therefrom to mate with corresponding slots in an adapter are normally utilized in order to aid in the transfer of forces from the tip to the adapter. Since the forces being directed to the tip are normally applied in various directions and of varying magnitudes, the ears extending from the tip may be subjected to forces attempting to pry them outwardly, thus, subjecting them to the possibility of breakage. In the subject arrangement, a tip includes a pair of opposed ears each having a pair of opposed edge surfaces that are angled one relative to the other. The pair of opposed ears of the tip mates with a pair of corresponding opposed slots defined in an adapter. The pair of opposed slots in the adapter likewise has a pair of opposed edge surfaces angled with respect to one another and are in confronting mating relationship with the pair of opposed edge surfaces of the pair of opposed ears.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: February 7, 1995
    Assignee: Caterpillar Inc.
    Inventor: Erwin D. Cornelius
  • Patent number: 5325615
    Abstract: An attachment, adapted to mount to the front edge of an excavating bucket, includes a working structure and a base. The front edge of the bucket defines an inner surface, an outer surface, and a beveled surface oriented at an inclination to the inner and outer surfaces. The base of the attachment includes a single leg or pair of legs having opposed engagement surfaces. The engagement surfaces on the two legged attachments diverge from one another to define a gap therebetween for receiving the lip of the bucket. One of the engagement surfaces defines a convex surface which enables the attachment to be mounted to a variety of different buckets irrespective of the inclination of the beveled surface of the front edge.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: July 5, 1994
    Assignee: ESCO Corporation
    Inventors: Brian J. Hutchins, William C. Johnston, Timothy L. Mayfield
  • Patent number: 5283965
    Abstract: An attachment assembly for securing excavation teeth to the loading or dipper bucket on large excavation equipment. The assembly includes a bucket lip adapted to be secured to a loading or dipper bucket, and a plurality of shanks adapted to be secured to the lip and carry the excavation teeth. The lip defines a forward edge extending transversely thereacross and defining a plurality of spaced first curvilinear bearing surfaces. Each of the shanks carried by the bucket lip defines a lateral channel therein adapted to receive a portion of the bucket lip and terminating in a second curvilinear bearing surface. The second curvilinear bearing surface abuts and mates with one of the first curvilinear bearing surfaces on the bucket lip upon shank being disposed thereover.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: February 8, 1994
    Assignee: H & L Tooth Company
    Inventor: Charles Clendenning
  • Patent number: 5224282
    Abstract: The invention is an improvement in a tooth assembly used with excavating and digging buckets such as those found in draglines, backhoes and the like. Such tooth assemblies include a top portion (such as a wear cap), a nose protruding beyond the portion and a digging tip. The tip has high-hardness upper and lower exterior wear surfaces and a sharp-edged tip end for biting into earth, mineral and rock. Either embodiment of the improved assembly involves mounting parts (a tip or tip and sleeve) directly on the nose. In one improved assembly, a sleeve is interposed between the tip and the portion and includes high-hardness wear surfaces extending between tip and portion. The tooth and sleeve cooperate to substantially entirely shroud the nose. In another version having no sleeve, the tip includes high-hardness active digging surfaces extending substantially entirely rather than only partially between the portion and the tip end.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: July 6, 1993
    Assignee: Harnischfeger Corporation
    Inventor: Carl D. Swick
  • Patent number: 5210965
    Abstract: A replaceable point is disclosed for attaching to the nose of an adapter to provide a tooth for an earth digging and moving bucket. The point is made up of a plurality of flat-sided, rolled steel plates that are held in aligned side-by-side relationship. The plates have edges that are contoured to form a point of the desired shape.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: May 18, 1993
    Assignee: Metal Parts, Inc.
    Inventors: Charles F. Funk, Sr., Charles F. Funk, Jr.