Removable Digging Edge Having Integral Tooth Adaptor Patents (Class 37/450)
  • Patent number: 10287754
    Abstract: A sidebar protecting wear member includes a module having a length extending in a length direction from a first end to a second end, and a width extending in a width direction from a first side to a second side, and a main body portion extending along only a first portion of the length of the module and across the entire width of the module. The module includes a first projecting element adjacent the first end of the module and extending along a second portion of the length to the first end of the length, and extending across only a first portion of the width of the module, and a second projecting element adjacent the second end of the module and extending along a third portion of the length to the second end of the length, and extending across only a second portion of the width of the module.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: May 14, 2019
    Assignee: Caterpillar Inc.
    Inventor: Nathan Bjerke
  • Patent number: 10202743
    Abstract: An adaptor for attaching a tooth to the arm of a cutter head. The adaptor having a rear coupling end and a front coupling end with a main cavity. The main cavity has a first upper surface, a first lower surface and two joining side surfaces. Each side surface has a side groove with a second upper surface parallel to a second lower surface. The second upper surface is approximately parallel to a lower segment adjacent to the bottom end on the first lower surface and the second lower surface of the side grooves is approximately parallel to an upper segment adjacent to the bottom end on the first upper surface. A distance between the second upper surface and the second lower surface of each groove is smaller than a distance between the upper segment and the lower segment of the main cavity.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: February 12, 2019
    Assignee: METALOGENIA RESEARCH & TECHNOLOGIES S.L.
    Inventors: Jorge Triginer Boixeda, Joan Tuto, Eduard Alvarez Portella, Jordi Brufau Guinovart
  • Patent number: 10190291
    Abstract: A sidebar protecting wear member includes a module having a length extending in a length direction from a first end to a second end, and a width extending in a width direction from a first side to a second side, the length being greater than the width. The module includes a generally planar surface and a first sidebar engaging abutment protruding from the generally planar surface adjacent the first end and a second sidebar engaging abutment protruding from the generally planar surface adjacent the second end. The module includes an attachment tab at only one of the first and second sides of the module and extending in a direction generally perpendicular to the generally planar surface.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: January 29, 2019
    Assignee: Caterpillar Inc.
    Inventor: Nathan Bjerke
  • Patent number: 10119252
    Abstract: A tool adapter for attaching a tool to a work implement using a retaining mechanism that includes a body that defines a pocket that defines an abutment or reinforcement surface. The body may include a nose portion that is configured to facilitate the attachment of a tool, a first leg, a second leg, a throat portion that connects the legs and nose portion together, wherein at least one leg defines an aperture that is configured to receive a retaining mechanism. The first and second legs and the throat portion also define a slot that includes a closed end and an open end that defines a direction of assembly onto a work implement and the minimum distance measured from the abutment surface to the throat measured in the direction of assembly is less than the minimum distance from the aperture to the throat measured in the direction of assembly.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: November 6, 2018
    Assignee: Caterpillar Inc.
    Inventor: Patrick Simon Campomanes
  • Patent number: 9469975
    Abstract: A wear pad assembly is configured to be quickly attached to a work tool in a non-permanent manner. The work tool includes first and second elements that are movable relative to each other from an open position to a closed position. The wear pad assembly includes a wear-resistant pad and a mounting bracket configured for attachment to the wear-resistant pad. The mounting bracket is configured to be securely clamped between the first and second elements of the work tool when in the closed position.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 18, 2016
    Assignee: Caterpillar Inc.
    Inventors: Paul Anthony Sheehan, Adrian Paul Forrester
  • Patent number: 9074349
    Abstract: An excavation tooth assembly comprising: a first tooth member comprising a body having a first end and an opposite second end that incorporates a socket configured to receive the nose portion of a second tooth member, the first tooth member also comprising laterally facing opposing surfaces, the opposing surfaces and one or more surfaces of the second tooth member defining at least in part a locking space; and a lock which is configured to be inserted into the locking space in an operative position to lock the first tooth member to the second tooth member.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: July 7, 2015
    Assignee: Bradken Resources PTY Limited
    Inventor: Steven Goodwin
  • Patent number: 8959806
    Abstract: A lip for excavator buckets that is manufactured of rolled steel which gives it better mechanical properties than cast lips, achieving a better weight and decreasing manufacturing times. The lip has a machined slot formed in each nose. The slots allow the deformity and wear of the noses to be verified, facilitating repair operations.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: February 24, 2015
    Assignee: Minetec S.A.
    Inventor: Claudio Zamorano Jones
  • Patent number: 8819967
    Abstract: A ground engaging support structure such as an adapter is mounted on the front edge of an excavating bucket lip in a manner inhibiting side-to-side movement of the installed adapter, and shielding the front bucket lip edge from operational wear at the adapter installation location using opposing tapered block members secured to the front lip edge for movement toward a forwardly projecting stabilizing portion of the lip edge. As the adapter is telescoped onto the front lip edge over its stabilizing projection, correspondingly tapered portions of the adapter engage the block members and move them toward one another and toward the stabilizing projection. Rear leg portions of the adapter are then suitably secured to the bucket lip. The repositioned block members interposed between the adapter the front bucket lip edge then inhibit side-to-side shifting of the installed adapter while also shielding the lip edge from operational abrasion wear.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: September 2, 2014
    Assignee: Hensley Industries, Inc.
    Inventor: Patrick Campomanes
  • Publication number: 20120131820
    Abstract: Wearing element with enhanced wear resistance related to wearing elements, such as cast steel teeth to be specially used in machinery for earth-moving, ground-engaging and/or rock-cutting applications, as well as to inserts to be included within the wearing elements, to enhance their wear resistance thus prolonging their service life
    Type: Application
    Filed: May 28, 2010
    Publication date: May 31, 2012
    Applicant: METALOGENIA, S.A.
    Inventors: Jordi Brufau Guinovart, Jorge Alcala, Jorge Triginer Boixeda, Jose Sanchez, Jose Lopez Almendros
  • Patent number: 7971375
    Abstract: A tooth system for a tool for earth moving machinery that includes a holder located on the tool and a front tooth portion that is detachably arranged on and in relation to the holder, which tooth portion is in the form of a replaceable wear/replacement part with a rear leg and the holder embodies a cavity designed to receive the leg of the tooth portion. This achieves a unified joint for assimilation of occurring loads via a predetermined connection geometry embodying special, opposite, mutually interacting contact surfaces and clearance surfaces arranged along the tooth portion and holder. The joint includes a multi-armed, preferably cruciform, cross section comprising at least four projection arms and at least four grooves each that interact with each projecting arm. Each projection arms includes a vertically arranged, upper arm, lower heel and two, essentially horizontally and laterally arranged, wing portions, with a tensioning device.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: July 5, 2011
    Assignees: Combi Wear Parts AB, Vosta LMG B.V.
    Inventors: Adnan Gabela, Per Quarfordt, Cornelis Wempe, Klaas Wijma
  • Patent number: 7862277
    Abstract: There is disclosed a pair of components which, in the embodiment described, are a tooth (2) and adaptor (3) for earth-moving apparatus (1). The adaptor is for mounting the tooth on an earth-moving bucket, this mounting being releasable to allow replacement of the tooth when worn. The components define aligned passages (11) through which a locking pin (12) extends to retain the components together. The locking pin has formations (22) for engaging formations (20) on the first component when the pin is rotated from a free position into a locked position. The pin has an insertion recess (27) which is aligned with the formations (20) allowing the pin, in the free position, to be inserted into, or removed from, the aligned passages. The formations (20) are resiliently movable to stably engage the pin when in the locked position.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: January 4, 2011
    Inventors: David Dingwall, Wayne Brinkley, Bruce Gale
  • Publication number: 20100162594
    Abstract: A connector for earth-moving equipment subjected to contact with earth, abrasive materials and the like has a nut with a body and a hole extending through the body. A bolt with a shank adapted to extend into the hole has an enlarged head at one end of the shank. Cooperating thread formations are defined on the shank and in the hole. The thread formations have cooperating matching cross-sections that decrease from a vicinity of the head of the screw towards the other end of the screw and that extend over a circumference of less than 360° and typically of no more than 270°. The connector is adapted to connect various components, including teeth and adapters, to each other and to lips at the front end of earth moving buckets and the like.
    Type: Application
    Filed: December 17, 2009
    Publication date: July 1, 2010
    Inventor: Robert S. Bierwith
  • Patent number: 7739814
    Abstract: A wear assembly includes an adapter with a nose, a wear member with a socket to receive the nose, and a lock to secure the wear member to the adapter. The nose and socket include complementary rails and grooves that vertically diverge as they extend from the front of the nose. The lock can have a tapered construction.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: June 22, 2010
    Assignee: ESCO Corporation
    Inventors: Christopher M. Carpenter, Robert S. Fleck, Terry L. Briscoe, Daniel R. Danks, Venkat R. Gaurav, Larren F. Jones
  • Publication number: 20090320333
    Abstract: The tooth and adaptor for dredging machines object of the present invention relates to a tooth or wear member which, attached to an adaptor or adaptor member, creates an assembly the purpose of which is to deepen and clean the beds of ports, rivers, channels, etc., removing therefrom sludge, stones, sand, etc., the adaptors being attached to the blades of the propellers and thus forming the cutter head of the dredging machine. The constructive features of the coupling between the tooth and the tooth bar or adaptor allow making better use of the cutting material of the tooth and a simple and quick replacement thereof in the adaptor, between other advantages.
    Type: Application
    Filed: September 1, 2006
    Publication date: December 31, 2009
    Applicant: METALOGENIA, S.A.
    Inventors: Angel Martinez, Francisco Perez, Joan Tuto, Ester Alonso
  • Patent number: 7526886
    Abstract: A wear assembly for protecting the digging edge of a bucket which includes a wear member having a lock-receiving hole in one leg and an upstanding rib along the other leg. The rib extends axially along the leg to be received into a slot in a base fixed to the lip of the bucket. The rib has a rear end that engages the base to hold the rear end of the rib between the base and the lip. The wear member further includes an interior surface that has a front portion formed with a curve to wrap around the digging edge and a plurality of stabilizing surfaces. The lock has a latch and a threaded wedge received into the passage to move the latch to its holding position to maintain the lock in the assembly during use.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: May 5, 2009
    Assignee: Esco Corporation
    Inventors: Robert McClanahan, Phil Metschan, Carolyn Shapiro
  • Publication number: 20080201995
    Abstract: An excavator attachment apparatus for converting a loader bucket to an excavator bucket and from an excavator bucket back to a loader bucket includes an elongate mounting bar to be connected only to the side walls of the bucket and extend along the lip of the bucket between the side walls, and a plurality of teeth connected to the mounting bar, with each tooth having an open groove extending into the tooth, the groove to be extended over the lip of the bucket to firmly hold the excavator attachment on the lip of the bucket without direct connection to the lip.
    Type: Application
    Filed: February 25, 2008
    Publication date: August 28, 2008
    Inventor: Dan Browder
  • Patent number: 7278228
    Abstract: The invention relates to a hinged tooth for a cutting wheel comprising a pivot bearing for pivotally supporting on a pivot pin located on a cutting wheel hub, a cutting tooth support extending from the pivot bearing and a steering arm extending from the pivot bearing substantially in a direction opposite to that of the cutting tooth support. A simple and at the same time stable arrangement is achieved in that the pivot bearing, the cutting tooth support and the steering arm are designed as a one-piece support.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: October 9, 2007
    Assignee: Bauer Maschinen GmbH
    Inventors: Maximilian Michael Arzberger, Ignaz Anton Seitle, Ludwig Andreas Huber
  • Patent number: 7114272
    Abstract: A digging tooth adapted to extend forward from a leading edge of a bucket or the like. The digging tooth has a forward end, with an edge extending thereacross, and a rear end. The digging tooth further includes wing structure preferably formed integral with the digging tooth and extending from a surface on the tooth so as to provide the bucket with enhanced ground penetration capability while concomitantly shielding ground engaging components disposed rearwardly of a rear end of the digging tooth against wear and, thus, potentially extending the useful wear life of such components.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: October 3, 2006
    Assignee: H&L Tooth Company
    Inventors: Charles Clendenning, Brian L. Launder
  • 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
  • Publication number: 20040244235
    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: Application
    Filed: April 13, 2004
    Publication date: December 9, 2004
    Applicant: MATALOGENIA, S.A.
    Inventors: Javier Puevo Molino, Jorge Pallas Moreno, Nil Vallve I. Bertran, Rafael Ferrer Ruiz
  • Patent number: 6826855
    Abstract: A replaceable excavating tooth point is telescoped onto an adapter nose and releasably retained thereon by an elongated, flat connector member having an untapered side periphery. The connector member longitudinally extends through aligned point and connector openings and blocks forward removal of the point from the adapter nose. A transverse point sidewall abutment surface facing one end of the installed connector member prevents it from moving outwardly through one of the point openings, and a rotatable lock member carried by the other end of the connector member and engageable with a groove in the other point opening releasably prevents the connector member from moving outwardly through the grooved point opening. A detent structure releasably holds the lock member in locking and unlocking orientations in which the lock member is prevented from moving parallel to the length of the connector member.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: December 7, 2004
    Assignee: Hensley Industries, Inc.
    Inventor: John A. Ruvang
  • Publication number: 20040237354
    Abstract: A coupling arrangement for securing two separable components in an excavating operation includes a wear component, a base component and a lock. The lock has a body having a configuration adapted to be received in a hole in the base component, and a rotatable locking member. The locking member includes a flange that is movable between a locking position wherein the flange holds the lock in the assembly and a release position wherein the flange permits the lock to be removed from the assembly. In the release position, the flange sets within the axial extension of the outline of the body. In the locking position, at least part of the flange sets outside the axial extension of the outline of the body. In one construction, the rotation of the locking member to the locking position tightens the fit of the wear component on the base component.
    Type: Application
    Filed: September 22, 2003
    Publication date: December 2, 2004
    Applicant: ESCO Corporation
    Inventor: Robert K. Emrich
  • 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: 6757995
    Abstract: A system for coupling excavation equipment components is provided. The system includes a retainer pin having first and second detents which are extendable axially from a surface of the retainer pin, in response to rotation of a valve seated at least partially within a cylindrical bore which extends at least partially through the retainer pin. In accordance with the particular embodiment, the valve includes at least one slotted portion configured to receive the detents at least partially therein, when the detents are in a retracted position.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: July 6, 2004
    Assignee: TRN Business Trust
    Inventor: Sherlock K. Pippins
  • Patent number: 6751897
    Abstract: A lip assembly is disclosed. The lip assembly comprises a lip having an upper surface, a lower surface, a front portion, and a rear portion. A plurality of holes is disposed between the front portion and the rear portion. The lip also includes support members. Each support member is disposed adjacent to a hole within the plurality of holes and is positioned to inhibit movement of a tooth assembly coupled to the hole. A plurality of tooth assemblies extend away from the lip and are respectively coupled to the lip via the plurality of holes. The lip assembly may be used with an excavation bucket body.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: June 22, 2004
    Inventor: Robert S. Bierwith
  • Publication number: 20030121185
    Abstract: An assembly for mounting an excavating tooth particularly suited for a dredge cutterhead includes a base, an adapter, and a lock. The base includes a convex, curved bearing surface that abuts a concave, curved bearing surface on the adapter. The curved bearing surfaces are able to maintain substantially full contact with each other under transverse loading.
    Type: Application
    Filed: November 8, 2002
    Publication date: July 3, 2003
    Applicant: ESCO Corporation
    Inventors: Charles G. Ollinger, Noah David Cowgill
  • Patent number: 6446368
    Abstract: When added, the inclined plane (22) becomes the earth engaging tool. It is a robust, one piece, durable metal slope. Its leading edge is optionally pointed, narrowed, and thickened for use in consolidated and abrasive earth. Its leading edge fractures and cleaves as it up lifts excavated earth above and beyond its attachment to the implement (28). Working more than one inclined plane (22) in unison and arranged to bridge cleave, results in little to no abrasion to the implement (28), superior excavation performance, and excellent staying.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: September 10, 2002
    Inventor: Cleal T Watts
  • Patent number: 6374521
    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: August 20, 1999
    Date of Patent: April 23, 2002
    Assignee: TRN Business Trust
    Inventor: Sherlock Pippins
  • Publication number: 20010005950
    Abstract: A bucket assembly is disclosed. The bucket assembly includes a bucket having a base edge. The bucket assembly also includes a base edge protection assembly having (i) a digging plate having a forward edge with a pair of notches defined therein so that a tooth is formed from a portion of the digging plate that is interposed between the notches and (ii) a cover plate secured to the digging plate so that an edge slot is defined between the digging plate and the cover plate. The base edge protection assembly is secured to the bucket such that the base edge of the bucket is positioned within the edge slot of the base edge protection assembly.
    Type: Application
    Filed: December 22, 2000
    Publication date: July 5, 2001
    Inventors: William J. Renski, James E. Reid, Ronald L. Sievers
  • Patent number: 6213559
    Abstract: A scarifying blade for use on earthmoving equipment (e.g. a road grader). The lower working edge of the blade has attached to it several spaced rotatable bits, and attached to at least one of the ends of the blade is an end rotatable bit at an angle of about 30 to 60 degrees relative to the spaced bits on the lower edge of the blade. The end bits prevent loosened material from spilling around the end of the blade and they also provide other additional advantages.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: April 10, 2001
    Inventor: Robert J. Stevens
  • 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: 6070345
    Abstract: A bucket tool comprising an edge 7 secured to the lower part of a bucket in a lateral direction, tooth-mounting fittings 8 secured to the edge 7 with an interval between the fittings in the lateral direction, excavation teeth 9 attachably/detachably mounted in the tooth-mounting fittings 8 and protruding forward beyond the edge 7, a ground-leveling plate 10 having a lateral width equal to the lateral width of the lower part of the bucket, and coupling fittings 11 secured to the upper surface of the ground-leveling plate 10 at an interval nearly equal to the interval between the tooth-mounting fittings 8 and capable of being detachably attached to the ends of the excavation teeth 9. Upon attaching or detaching the coupling fittings 11 secured to the upper surface of the ground-leveling plate 10 to, or from, the ends of the excavation teeth 9, the ground-leveling plate 10 can be easily attached to, or detached from, excavation teeth of a bucket for excavation.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: June 6, 2000
    Assignee: Mitsubishi Steel Mfg. Co., Ltd.
    Inventors: Tsuyoshi Akaki, Yasuo Miyoshi
  • 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: 6032390
    Abstract: In an excavation bucket, the nose of an adapter has two surfaces to take the horizontal loads and four surfaces to take the vertical loads. A pin holds and locks a tooth to the adapter. Projections on the pin engage sloping surfaces of the nose. A recess placed ahead of the nose of the adapter will become visible as the tooth erodes due to wear. A recess at the nose of the adapter indicates that the tooth has worn too much and, unless the tooth is replaced, will commence to cause wear of the adapter and adjacent parts. To attach the adapter to the lip of the excavation bucket, wedge members are joined together near one end thereof to form a wedge-shaped block insertable into a wedge-shaped space formed by a C-clamp surface and a slot in the lip. The block is forced into the space, and spring biased teeth carried by the lock box progressively enter and leave the recesses in the outer surface of the C-clamp. When the C-clamp is tight enough in the gap, the installation of the lock box is complete.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 7, 2000
    Inventor: Robert Bierwith
  • Patent number: 5992063
    Abstract: The invention relates to an assembly of ground engaging tool components which are attachable to the lip of a bucket of an earth moving machine. The assembly of tool components comprises a nosepiece attachable to the lip of the bucket, an adaptor attachable to the nosepiece and a tip attachable to the adaptor. The components are attachable to one another by spigot and socket arrangements, the relevant spigot in each case defining two opposed tapered faces and a pair of side faces spacing the tapered faces from one another, at least one of the side faces of the spigot defining a groove with opposed side walls which are tapered in an opposite sense to the taper on the opposed tapered faces.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: November 30, 1999
    Assignee: Caterpillar Commerical SARL
    Inventor: Noel Raymond Mack
  • Patent number: 5852888
    Abstract: An apparatus for protecting a base edge of a bucket of an earth working machine includes a fixed component secured to the base edge of the bucket, the fixed component having a first aperture extending therethrough. The apparatus also includes a protection member having a second aperture extending therethrough, wherein (1) the protection member is positioned relative to the fixed component such that the first aperture and the second aperture align to form a passageway having a first end and a second end, the passageway defining a passageway sidewall extending between the first end and the second end, (2) the protection member has a first notch defined therein, (3) the first notch is defined in the passageway sidewall, and (4) the first notch is spaced apart from both the first end and the second end of the passageway sidewall.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: December 29, 1998
    Assignee: Caterpillar Inc.
    Inventor: Erwin D. Cornelius
  • 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: 5653048
    Abstract: A wear assembly for attaching to a digging edge of an excavator includes a boss, a wear member and a lock. The boss is fixed to the excavator and defines a T-shaped coupling structure. The adapter includes a rearwardly extending mounting leg and a forwardly extending working end. The leg includes a T-shaped slot adapted to be received over the T-shaped structure of the boss. The adapter leg further includes an opening for receiving a lock. The lock includes an adjustment assembly for eliminating any looseness which may exist between the adapter and the boss.
    Type: Grant
    Filed: November 6, 1995
    Date of Patent: August 5, 1997
    Assignee: ESCO Corporation
    Inventors: Larren F. Jones, Robert E. McClanahan, Hezekiah R. Holland
  • Patent number: 5634285
    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 an opening therein. An upper flange element of the base edge cover has a bar projecting inwardly therefrom toward the upper face of the base edge. The bar is positionable within the opening of the mounting base and is captured in such opening by a detachable lock. The construction results in a reduction of waste of materials that must be discarded after the base edge cover is worn out.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: June 3, 1997
    Assignee: Caterpillar Inc.
    Inventor: William J. Renski
  • Patent number: 5412885
    Abstract: Edge protectors for the leading portions of base edges have been utilized in many application to protect the leading portion of the base edge. It is advantageous to have an edge protector that is readily removed and replaced without having to remove additional elements. In the subject arrangement, a base edge protector assembly is included having a protector mounting lug and a replaceable lip protector. The protector mounting lug has a pair of spaced apart bosses and a laterally disposed flange therebetween while the lip protector has a cavity and load transferring surfaces located in the cavity. When assembled the load transferring surfaces are in mating contact with the laterally disposed flange of the protector mounting lug. First and second pairs of aligned openings are located in the lip protector and, when assembled, are in general alignment with the openings located in each boss of the pair of bosses. Flex pins are disposed in the openings to secure the lip protector to the protector mounting lug.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: May 9, 1995
    Assignee: Caterpillar Inc.
    Inventor: Erwin D. Cornelius
  • Patent number: 5253449
    Abstract: An improved excavating bucket, having a pair of sidewalls, a rear wall, a floor portion and an open front portion for receiving material thereinto; a plurality of teeth members secured to the floor portion for digging into the material to be excavated; a finishing blade mounted to the bucket, the blade extending across a width greater than the width of the bucket opening, and having a forward edge for scraping; a raised channel formed on the upper face of the blade for engaging a plurality of the teeth members; sidewall members extending from the outer edges of the blade for engaging the wall of the bucket, for defining an uninterrupted travelling space for material into the bucket; and adjustable support rods able to be swivelly positioned between the blade and the bucket sidewalls to stabilize the blade mounted on the bucket.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: October 19, 1993
    Inventors: Kenneth W. Webb, Steven W. Pohl
  • Patent number: RE42629
    Abstract: A wear assembly for attaching to a digging edge of an excavator includes a boss, a wear member and a lock. The boss is fixed to the excavator and defines a T-shaped coupling structure. The adapter includes a rearwardly extending mounting leg and a forwardly extending working end. The leg includes a T-shaped slot adapted to be received over the T-shaped structure of the boss. The adapter leg further includes an opening for receiving a lock. The lock includes an adjustment assembly for eliminating any looseness which may exist between the adapter and the boss.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: August 23, 2011
    Assignee: ESCO Corporation
    Inventors: Larren F. Jones, Robin Morton, legal representative, Jennifer Harp, legal representative, Randall Jones, legal representative, Patrick Jones, legal representative, Jeffrey Jones, legal representative, Robert E. McClanahan, Hezekiah R. Holland