Specific Material (e.g., Specialty Steel, Heat Treatment Of Material, Specific Hardness Test) Patents (Class 37/460)
  • Patent number: 10206331
    Abstract: A blade for a mower disc body is provided. The blade includes a cutting blade body of a first base material, top and bottom surfaces and an outer surface that extends around the cutting blade body vertically between the top and bottom surfaces. The blade further includes a cutting edge formed along the outer surface and a plurality of clad beads extending along one of the top and bottom surfaces transversely away from the non-serrated cutting edge.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: February 19, 2019
    Assignee: Kondex Corporation
    Inventors: Neal J. Stoffel, Keith A. Johnson, Andrew J. Theisen
  • Patent number: 9936636
    Abstract: A blade for a mower disc body is provided. The blade includes a cutting blade body of a first base material, top and bottom surfaces and an outer surface that extends around the cutting blade body vertically between the top and bottom surfaces. The blade further includes a cutting edge formed along the outer surface and a plurality of clad beads extending along one of the top and bottom surfaces transversely away from the non-serrated cutting edge.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: April 10, 2018
    Assignee: Kondex Corporation
    Inventors: Neal J. Stoffel, Keith A. Johnson, Andrew J. Theisen
  • Patent number: 9686911
    Abstract: A blade for a mower disc body is provided. The blade includes a cutting blade body of a first base material, top and bottom surfaces and an outer surface that extends around the cutting blade body vertically between the top and bottom surfaces. The blade further includes a cutting edge formed along the outer surface and a plurality of clad beads extending along one of the top and bottom surfaces transversely away from the non-serrated cutting edge.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: June 27, 2017
    Assignee: Kondex Corporation
    Inventors: Neal J. Stoffel, Keith A. Johnson
  • Patent number: 9137937
    Abstract: A modified surface topography for agricultural tools includes dimples are arranged in a parallelogram (hexagonal) pattern, the morphological unit of which is an equilateral triangle. This surface pattern can be applied to various tools which are impeded by the traction of the soil.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: September 22, 2015
    Assignee: INSTITUTO NACIONAL DE TECNOLOGIA AGROPECUARIA
    Inventors: Adrian Marcelo Canzian, Jose Crisanti, Carlos Alberto Monti, Eduardo Alfredo Favret, Hector Jose Maria Morras, Angel Romito, Marcos Andres Roba, Juan Pablo D'Amico, Mario Omar Tesouro
  • Patent number: 9027266
    Abstract: A wear component for use on, for instance, an excavator formed by a shell formed from a tough metal such as carbon steel and an inner body formed from an abrasion resistant metal such as a chromium white iron. The shell includes cross portions extending through the inner body, the cross portions being made of the tough metal. This has the effect of strengthening the overall toughness of the wear component, while retaining desirable abrasion resistance.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: May 12, 2015
    Assignee: Excalibur Steel Company Pty Ltd
    Inventors: Patrick Gerard Maher, Tymen Jacob Dinn Brom, Jonathan Clowes Pemberton
  • Patent number: 9009996
    Abstract: An excavating tooth includes a body and an abrasion-resistant layer. The abrasion-resistant layer has hardness higher than the body. The body includes a tip end face, a first face, a second face, a pair of first slope faces, and a pair of second slope faces. The abrasion-resistant layer includes a first abrasion-resistant layer section and a second abrasion-resistant layer section. The first abrasion-resistant layer section is formed on the tip end face. The second abrasion-resistant layer section is formed respectively on the pair of first slope faces and the pair of second slope faces. Thereby, it is possible to obtain an excavating tooth and a body for the excavating tooth capable of keeping a penetration force of a blade edge high in penetrating into an excavation subject.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: April 21, 2015
    Assignee: Komatsu Ltd.
    Inventors: Eiji Amada, Takanori Nagata, Kenichi Tanaka, Daijirou Itou
  • Patent number: 9003681
    Abstract: Bucket teeth having a metallurgically bonded wear-resistant coating and methods for forming the coated bucket teeth are disclosed. The bodies of the bucket teeth have a hard metal alloy slurry disposed on a surface and then are fused to form a metallurgical bond with the iron-based alloy. The wear-resistant coating can be formed of a fused, metal alloy comprising at least 60% iron, cobalt, nickel, or alloys thereof. The portion of the outer surface of the bucket teeth having the wear-resistant coating corresponds to a wear surface of the bucket teeth during operation.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: April 14, 2015
    Assignee: Deere & Company
    Inventors: Jason M. Simmons, Donald R. Flatau
  • 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
  • Publication number: 20150047234
    Abstract: The present disclosure provides a plow blade edge device for mounting to a moldboard of a plow comprising at least one adapter blade including a bottom edge having selectively carbide insert(s) along at least a portion of the bottom edge. The disclosure further provides for a method of brazing the carbide insert(s) in a cavity along at least a portion of the bottom edge. The device further includes at least one wear block selectively reversible to present the adapter blade at a first angle or a second angle. The at least one wear block can include a bottom edge having a carbide insert along at least a portion of the bottom edge.
    Type: Application
    Filed: August 15, 2013
    Publication date: February 19, 2015
    Inventor: Kent Winter
  • Patent number: 8806785
    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: Grant
    Filed: May 28, 2010
    Date of Patent: August 19, 2014
    Assignee: Metalogenia, S.L.
    Inventors: Jordi Brufau Guinovart, Jorge Alcala, Jorge Triginer Boixeda, Jose Sanchez, Jose Lopez Almendros
  • Patent number: 8763282
    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-loading applications, as well as to inserts to be included within the wearing elements, to enhance their wear resistance thus prolonging their service life.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: July 1, 2014
    Assignee: Metalogenia, S.A.
    Inventors: Jordi Brufau Guinovart, Jorge Alcala, Jorge Triginer Boixeda, Jose Sanchez, Jose Lopez Almendros
  • Patent number: 8646192
    Abstract: The present invention discloses a composite tooth for working the ground or rocks, said tooth comprising a ferrous alloy at least partially reinforced with titanium carbide according to a defined geometry, in which said reinforced portion comprises an alternating macro-microstructure of millimetric areas concentrated with micrometric globular particles of titanium carbide separated by millimetric areas essentially free of micrometric globular particles of titanium carbide, said areas concentrated with micrometric globular particles of titanium carbide forming a microstructure in which the micrometric interstices between said globular particles are also filled by said ferrous alloy.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: February 11, 2014
    Assignee: Magotteaux International S.A.
    Inventor: Guy Berton
  • Publication number: 20130145660
    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: Application
    Filed: December 10, 2012
    Publication date: June 13, 2013
    Applicant: MINETEC S.A.
    Inventor: Minetec S.A.
  • Patent number: 8209887
    Abstract: The present invention relates to a wear shoe for use with utility equipment comprising a unitary housing having therein at least one cavity containing a wear resistant insert bound within the unitary housing and methods for making the same. Most preferably, the wear resistant insert is a ceramic material.
    Type: Grant
    Filed: June 12, 2010
    Date of Patent: July 3, 2012
    Inventor: Syamal Kumar Ghosh
  • Patent number: 8024873
    Abstract: A resilient excavation bucket for use with a piece of machinery having an articulated arm. The excavation bucket comprises a resilient member and a rigid member. The resilient member has a digging edge adapted to deflect in response to pressure from impact with a material at least as rigid as the digging edge and to return to a substantially non-deflected condition upon release of the pressure. The rigid member is cooperatively associated with the resilient member and has a connection member adapted to pivotally engage a portion of the articulated arm of the piece of machinery. At least one of the resilient member and the rigid member at least partially defines a bucket cavity disposed at least partially between the digging edge and the connection member. Additionally, an excavation apparatus comprising a backhoe having an articulated arm and the resilient excavation bucket operatively associated with the articulated arm.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: September 27, 2011
    Inventor: Danny M. Wright
  • Patent number: 7930844
    Abstract: Self-sharpening wearing part having improved abrasion resistance and strength, which wearing part comprises at least a first and a second material part. The first material part is constituted by a casting body and the second material part is comprised of at least one elongated hard metal rod which is fixed in the first material part. The wearing part produces an auto-signal when the part must be changed due to wear.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: April 26, 2011
    Assignees: Combi Wear Parts AB, Vosta LMG B.V.
    Inventors: Per Quarfordt, Klaas Wijma, Stefan Ederyd
  • Patent number: 7900383
    Abstract: A resilient excavation bucket for use with a piece of machinery having an articulated arm. The excavation bucket comprises a resilient member and a rigid member. The resilient member has a digging edge adapted to deflect in response to pressure from impact with a material at least as rigid as the digging edge and to return to a substantially non-deflected condition upon release of the pressure. The rigid member is cooperatively associated with the resilient member and has a connection member adapted to pivotally engage a portion of the articulated arm of the piece of machinery. At least one of the resilient member and the rigid connection member at least partially defines a bucket cavity disposed at least partially between the digging edge and the connection member. Additionally, an excavation apparatus comprising a backhoe having an articulated arm and the resilient excavation bucket operatively associated with the articulated arm.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: March 8, 2011
    Inventor: Danny M. Wright
  • Patent number: 7874085
    Abstract: The present disclosure provides a plow blade edge device for mounting to a moldboard of a plow comprising at least one adapter blade including a bottom edge having a carbide insert along at least a portion of the bottom edge. The device further includes at least one moldboard shoe selectively reversible to present the adapter blade at a first angle or a second angle. The device further includes at least one impact bar mounted to a front side of the adapter blade. The at least one moldboard shoe can include a bottom edge having a carbide insert along at least a portion of the bottom edge.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: January 25, 2011
    Assignee: Winter Equipment Company
    Inventors: Kent Winter, Phil Prucey
  • Patent number: 7836615
    Abstract: Wear resistors adapted for use in wear parts comprising steel castings for replaceable attachment to snow plows, road machinery equipment, agriculture, and construction excavator teeth. The wear castings provide a replaceable member for wear affected parts of equipment used for cutting, scraping, digging, plowing, etc. Each replaceable wear part can comprise a hard, impact resistant metal of high shear strength having at least one cavity filled with an abrasion resistant weldment or resistor. The abrasion resistant weldment can be placed proximal to the wear edges or wear surfaces of the expendable and replaceable wear parts.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: November 23, 2010
    Assignee: Winter Equipment Company
    Inventor: Kent Winter
  • Publication number: 20100269379
    Abstract: The present invention relates to an improved ripper boot which includes a carrier section, and a ripper tooth section having a high tensile tip adapted to be press fit into a contact end thereof. In operation, the carrier section is placed over and conformed to fit over a ripper boot shank of a bulldozer, or one or more excavator loader bucket shanks. In using a press fit high tensile tip, less maintenance is required on the ripper boot during operation, which means that the machinery does not need to idle so often, saving considerable time and expense. The reason for this is that the tip is made of a high tensile metal such as tungsten which is less susceptible to wear and tear so it can be used for considerably longer periods before it becomes worn. Furthermore, hard and abrasive rock in front of the tungsten tip has been found to “explode” in its path resulting in the location of precious stones which would otherwise have been missed using conventional equipment.
    Type: Application
    Filed: August 22, 2007
    Publication date: October 28, 2010
    Inventor: James A. Calderwood
  • Patent number: 7797861
    Abstract: A resilient excavation bucket for use with a piece of machinery having an articulated arm. The excavation bucket comprises a resilient member and a rigid member. The resilient member has a digging edge adapted to deflect in response to pressure from impact with a material at least as rigid as the digging edge and to return to a substantially non-deflected condition upon release of the pressure. The rigid member is cooperatively associated with the resilient member and has a connection member adapted to pivotally engage a portion of the articulated arm of the piece of machinery. At least one of the resilient member and the rigid connection member at least partially defines a bucket cavity disposed at least partially between the digging edge and the connection member. Additionally, an excavation apparatus comprising a backhoe having an articulated arm and the resilient excavation bucket operatively associated with the articulated arm.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: September 21, 2010
    Inventor: Danny M. Wright
  • Patent number: 7765726
    Abstract: The invention relates to a sandwich scraper strip for the blade of a snowplow and provided at the top with a steel fastening neck onto which a rubber body having at least one embedded hard material body is molded. According to the invention, the hard material body is provided in the form of a hard metal core surrounded by a steel jacket. This results in achieving a surprisingly high serviceable life of the sandwich scraper blade.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: August 3, 2010
    Assignee: Gummi Küper GmbH & Co. KG
    Inventor: Roland Küper
  • Patent number: 7690138
    Abstract: In one aspect of the invention a trenching machine for degrading natural and man-made formations, comprising a plurality of roller assemblies exteriorly mounted to a trenching boom or wheel. The rollers comprising a plurality of pointed inserts radially arranged along the wheel's outer diameter. The inserts are adapted to degrade the formation when the boom or wheel is activated.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: April 6, 2010
    Inventors: David R. Hall, Francis Leany, Ronald Crockett, Jeff Jepson, Tyson J. Wilde
  • Patent number: 7681338
    Abstract: In one aspect of the present invention, a roller assembly on an excavator for degrading natural and man-made formations has a plurality of pointed inserts disposed along its outer diameter. The inserts have a tip adapted to impact the formation and at least one of the tips has polycrystalline diamond bonded to a cemented metal carbide segment. The diamond also has a substantially conical geometry with a 0.50 to 0.200 inch radius and a thickness greater that 100 inches at the apex. The diamond also has a volume that is 75 to 150 percent of a volume of a carbide substrate.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: March 23, 2010
    Inventors: David R. Hall, Ronald Crockett, Sigmar Tobias
  • Patent number: 7676968
    Abstract: In one aspect of the invention, a roller assembly has an axle that supports opposing faces of a cylindrical body that has a plurality of pointed inserts disposed along an outer diameter of the cylindrical body. At least one of the inserts has a tip with a polycrystalline diamond bonded to a cemented metal carbide segment. The diamond has a substantially conical geometry with a 0.50 to 0.200 inch radius apex and comprises a thickness greater than 0.100 inches at the apex. The roller assembly has an internal lubrication mechanism adapted to apply lubrication between the axle and the cylindrical body.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: March 16, 2010
    Inventors: David R. Hall, Ronald Crockett, Sigmar Tobias
  • Patent number: 7665234
    Abstract: A grader blade includes a grader blade body that has a recess in a bottom edge, and a tri-grade insert assembly is received within the recess. The tri-grade insert assembly includes a leading insert, a mediate insert and a trailing insert. The leading insert has an impact wear resistance and fracture wear resistance greater than the mediate insert and the trailing insert. The trailing insert has an abrasion wear resistance and down-pressure wear resistance greater than the leading insert and the mediate insert. The mediate insert has an impact wear resistance and fracture wear resistance greater than the trailing insert and an abrasion wear resistance and down-pressure wear resistance greater than the leading insert.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: February 23, 2010
    Assignee: Kennametal Inc.
    Inventors: Timothy J. Diehl, Don C. Rowlett, Terry A. Manway, Duane E. Carson, Jr., Andrew G. Mayer, Aniruddha S. Marathe
  • Publication number: 20090071042
    Abstract: A grader blade includes a grader blade body that has a recess in a bottom edge, and a tri-grade insert assembly is received within the recess. The tri-grade insert assembly includes a leading insert, a mediate insert and a trailing insert. The leading insert has an impact wear resistance and fracture wear resistance greater than the mediate insert and the trailing insert. The trailing insert has an abrasion wear resistance and down-pressure wear resistance greater than the leading insert and the mediate insert. The mediate insert has an impact wear resistance and fracture wear resistance greater than the trailing insert and an abrasion wear resistance and down-pressure wear resistance greater than the leading insert.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 19, 2009
    Inventors: Timothy J. Diehl, Don C. Rowlett, Terry A. Manway, Duane E. Carson, JR., Andrew G. Mayer, Aniruddha S. Marathe
  • Publication number: 20080229627
    Abstract: The present invention relates to improvements to ripper boots of the type adapted to be mounted to a bulldozer tyne for use in cleaving through hard ground. The ripper boot embodied in the present invention has particular application in opal mining where sometimes extremely hard ground is to be penetrated and ripped. The ripper boot includes a replaceable ripping tooth which is secured within the boot by way of an interference fit so that during use, it does not rotate. The interference fit prevents particular matter from entering between the walls of the tooth and the associated socket. In further forms of the invention, the replaceable ripping tooth is angled upwardly with respect to the carrier so that the angle of attack of the ripping tooth is raised so that it is almost parallel with the ground. The ripper boot provides a number of benefits including improved cleaving effect, reduced chatter and drag, reduced wear and tear, and reduced load on associated machinery.
    Type: Application
    Filed: August 24, 2006
    Publication date: September 25, 2008
    Inventor: James A. Calderwood
  • Patent number: 6865829
    Abstract: A bucket tooth capable of preventing a bolt from being loosened during operation is provided. In order to allow the bucket tooth to generate a resilient return force after attachment, a warp is caused by resilient deformation so that a face on the bucket lip side becomes a concave face. As another means, a spot facing portion is formed around a bolt hole into which a fastening bolt is inserted, on the side facing the bucket lip.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: March 15, 2005
    Assignee: Komatsu Ltd.
    Inventors: Masaharu Amano, Kazuhide Okawa
  • Patent number: 6854527
    Abstract: The present invention provides for carbide edge snowplow and grader blades that are durable and fracture resistant. The carbide along the blade edge and blade bottom which contacts the surface being treated is designed to limit the degree of fracture of the carbide. Carbide inserts along the edge and/or bottom are separated from each other by a steel alloy spacer/shim along the width of the blade. The spacer/shim reduces the potential for impact damage cracks that form in a carbide insert from propagating into adjacent inserts along the width of the blade. In one embodiment, the improved blade edge comprises an edge body having a lower edge with a recess and separate slot in the bottom surface of the edge. Within the blade recess and blade slot are positioned carbide block/bar inserts separated by spacer means made from a ductile material.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: February 15, 2005
    Assignee: Kennametal Inc.
    Inventors: Terry A. Manway, Andrew G. Mayer, Daniel C. Statler, Charles P. Baldwin
  • Patent number: 6799385
    Abstract: An abrasion resistant metal earth working surface having a plurality of spaced hollow open ended cup-shaped abrasion resistant studs welded to the surface which collect particulate material in the hollow open ends of the weld studs, wherein the particulate material forms an abrasion resistant barrier limiting abrasion of the earth working surface. The size and shape of the cup-shaped weld studs and the spacing between the array of studs is selected to provide optimum collection of particulate material which reduces wear to extend the efficient operation and life of the earth working surface.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: October 5, 2004
    Assignee: Nelson Stud Welding, Inc.
    Inventor: Clark B. Champney
  • Patent number: 6745709
    Abstract: A ground engaging tip for a seed boot attachment for depositing a seed within a furrow. The tip including a conical shape member formed of three generally planar shape side surfaces wherein two of the side surfaces meet to form an inclined leading edge extending from a tip of the conical shape member; and at least one wear resistant insert. The insert is secured to the leading edge of the ground engaging tip and includes a generally elongated bar having a leading end, a trailing end and three connecting side surfaces, a first side, second side and third side. The first, second and third side surfaces form a bar having a generally triangular cross-section, wherein the leading end of the bar is angled.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: June 8, 2004
    Assignees: Kennametal Inc., GEN Manufacturing Ltd.
    Inventors: Don C. Rowlett, Henry J. Bergen, David H. Bergen
  • 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: 6647648
    Abstract: A bucket tooth capable of preventing a bolt from being loosened during operation is provided. In order to allow the bucket tooth to generate a resilient return force after attachment, a warp is caused by resilient deformation so that a face on the bucket lip side becomes a concave face. In addition, a spot facing portion is formed around a bolt hole into which a fastening bolt is inserted, on the side facing the bucket lip.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: November 18, 2003
    Assignee: Komatsu Ltd.
    Inventors: Masaharu Amano, Kazuhide Okawa
  • Patent number: 6632045
    Abstract: A tooth for a land compactor vehicle wheel comprises a base and a wall extending upwardly from the periphery of the base towards a crest. The crest has a peripheral profile defined by the upper edge of the wall and the wall is shaped such that the crest face is generally “M” shaped.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: October 14, 2003
    Assignee: Bernard McCartney Limited
    Inventor: Neil McCartney
  • Publication number: 20030188463
    Abstract: The present invention provides for carbide edge snowplow and grader blades that are durable and fracture resistant. The carbide along the blade edge and blade bottom which contacts the surface being treated is designed to limit the degree of fracture of the carbide. Carbide inserts along the edge and/or bottom are separated from each other by a steel alloy spacer/shim along the width of the blade. The spacer/shim reduces the potential for impact damage cracks that form in a carbide insert from propagating into adjacent inserts along the width of the blade. In one embodiment, the improved blade edge comprises an edge body having a lower edge with a recess and separate slot in the bottom surface of the edge. Within the blade recess and blade slot are positioned carbide block/bar inserts separated by spacer means made from a ductile material.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 9, 2003
    Inventors: Terry A. Manway, Andrew G. Mayer, Daniel C. Statler, Charles P. Baldwin
  • Publication number: 20030167663
    Abstract: An abrasion resistant metal earth working surface having a plurality of spaced hollow open ended cup-shaped abrasion resistant studs welded to the surface which collect particulate material in the hollow open ends of the weld studs, wherein the particulate material forms an abrasion resistant barrier limiting abrasion of the earth working surface. The size and shape of the cup-shaped weld studs and the spacing between the array of studs is selected to provide optimum collection of particulate material which reduces wear to extend the efficient operation and life of the earth working surface.
    Type: Application
    Filed: February 26, 2003
    Publication date: September 11, 2003
    Inventor: Clark B. Champney
  • Patent number: 6571493
    Abstract: A cutting edge which has improved resistance to scratching wear, such resistance being required for cutting edges for snow removal, which has good performance to increase e.g., compressed snow rate, and which can be manufactured at comparatively low cost. The cutting edge comprises a hard member provided at the leading edge of an edge body, the hard member comprising (i) a hard material containing hard grains which are dispersed with high filling density and integrally combined by a metal having a lower melting point than the hard grains and (ii) a protective member which covers at least the front face of the hard material as viewed in the travel direction of the blade and which has impact resistance.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: June 3, 2003
    Assignee: Komatsu Ltd.
    Inventors: Masaharu Amano, Takanori Nagata, Kazuhide Okawa
  • Patent number: 6457269
    Abstract: The invention relates to a ground-engaging tool which is connected or connectable to a lip on an excavation bucket. The ground-engaging tool includes a tool body which is formed from a material having a hardness of approximately 40 Rockwell C hardness and which defines a contact surface at one end for receiving impacts in use. Extending through a substantial portion of the tool body from the contact surface is a hardened core formed from a material having a hardness which is at least 20% greater than the hardness of the material of the tool body for transferring impacts through the tool body.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: October 1, 2002
    Assignee: Caterpillar Sarl
    Inventors: Schalk Willem Petrus Esterhuyse, Louw Kriel
  • Publication number: 20010005949
    Abstract: A cutting edge which has improved resistance to scratching wear, such resistance being required for cutting edges for snow removal, which has good performance to increase e.g., compressed snow rate, and which can be manufactured at comparatively low cost. The cutting edge comprises a hard member provided at the leading edge of an edge body, the hard member comprising (i) a hard material containing hard grains which are dispersed with high filling density and integrally combined by a metal having a lower melting point than the hard grains and (ii) a protective member which covers at least the front face of the hard material as viewed in the travel direction of the blade and which has impact resistance.
    Type: Application
    Filed: December 22, 2000
    Publication date: July 5, 2001
    Applicant: KOMATSU LTD.,
    Inventors: Masaharu Amano, Takanori Nagata, Kazuhide Okawa
  • Patent number: 6154987
    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.
    Type: Grant
    Filed: August 24, 1998
    Date of Patent: December 5, 2000
    Assignee: Vermeer Manufacturing Company
    Inventors: Larry James Rumer, John H. Walgren
  • Patent number: 6003617
    Abstract: An insert cooperates with the channel in a material moving board. The insert is adapted to reach at least 3/4 of the way from the front edge to the rear edge of the board. The insert is preferably brazed to the channel and is made primarily of tungsten carbide and a cobalt binder.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: December 21, 1999
    Assignees: Larry J. McSweeney, Lawrence H. McSweeney
    Inventors: Larry J. McSweeney, Lawrence H. McSweeney, Ronald D. Mills
  • Patent number: 5881480
    Abstract: A high wear-resistant grader blade which combines two high wear-resistant elements in the lower end of the blade. First, high wear-resistant particles are embedded into the front leading edge of the blade. More particularly, the leading edge of the blade is heated to pool molten metal. Tungsten carbide particles are then added to the pooled molten metal so as to blend with the molten metal. Upon cooling, the tungsten carbide particles mixed with the melted grader blade metal, will penetrate into the surface of the grader blade and will form a protrusion outward from the surface of the grader blade. Thus, the leading edge of the grader blade will be formed of a mixture of tungsten carbide and the grader blade material. Second, a groove is milled down the center of the grader blade and high wear-resistant inserts laid end-to-end are brazed into the groove.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: March 16, 1999
    Assignee: Jim Fall Enterprises, Inc.
    Inventor: James H. Fall
  • Patent number: 5852272
    Abstract: A wear-resistant overlay forming method wherein hard particles are supplied to a molten weld pool that is formed on a base material by an arc generated from an arc electrode to form a wear-resistant overlay containing hard particles on the base material, and wherein the hard particles are supplied to part of molten metal of the molten weld pool, the part being raised by the arc or flowing down owing to gravity. A wear-resistant composite member for cutting and removing rock and sand is designed such that the hard-facing deposit layers containing the hard particles are formed on the base material in a stripe pattern so as to run in the direction of friction produced by rock and sand or such that the hard-facing deposit layers containing the hard particles and soft-facing deposit layers made from soft material are formed on the base material in a stripe pattern so as to run in the direction transverse to the direction of friction produced by rock and sand, being alternately aligned in the direction of friction.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: December 22, 1998
    Assignee: Komatsu Ltd.
    Inventor: Masaharu Amano
  • Patent number: 5813474
    Abstract: The plow blade comprising support member, a blade edge being mounted to the support member and having one or more insert holes, and one or more blade inserts having a wear portion, the one or more blade inserts being mounted within the one or more insert holes of the blade edge such that the wear portion protrudes to some extent from the one or more insert holes.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: September 29, 1998
    Assignee: Kennametal Inc.
    Inventor: Terry A. Manway
  • Patent number: 5778572
    Abstract: An elongated steel cutting edge has an insert receiving slot formed therein extending from one end to the other. A plurality of carbide inserts of a generally rectangular solid configuration have a front face, a rear face and four sides. A plurality of upstanding protuberances are formed on and extend beyond the rear face of the inserts. The inserts are located within the slot in closely spaced side by side relationship and with the protuberances located against one of the sides of said slot. The front and rear faces of the cutting edge are brought together along the slot to cause a mechanical interlock between the protuberances of the insert and the cutting edge.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: July 14, 1998
    Assignee: Caterpillar Inc.
    Inventors: Paul J. Lukavich, Thomas D. Holtz, Charles L. McDaniel, Jr.
  • Patent number: 5743033
    Abstract: A ground engaging tool for an earthworking machine comprises a ground engaging element with a cast-in-place metal matrix composite component. The ground engaging element comprises a metal base component and a metal matrix composite component. The metal matrix component is bonded to the metal base component. The metal matrix composite component consists of a preform having interconnecting porosity. The preform is formed from a material selected from one of ceramic, cermet, or mixtures thereof. The metal matrix composite component also consists of an infiltration metal. The preform is infiltrated by the infiltration metal and the infiltration metal is fusion bonded to the metal base component.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: April 28, 1998
    Assignee: Caterpillar Inc.
    Inventor: Gerald A. Gegel
  • Patent number: 5647448
    Abstract: A drill bit for placement on a trenchless drill, the drill bit having a substantially rectangular construction, opposed side edges, a front end edge angularly related to the side edges, and a back end edge opposite the front end edge, opposed faces, with the edges having holes located therein and a cutting tooth press punched into each of the holes to form interference fits between the cutting teeth and the drill bit, the drill bit further having mechanism for attachment of the drill bit to the trenchless drill.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: July 15, 1997
    Inventor: Roger Dean Skaggs
  • 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: 5473829
    Abstract: A carbide insert having fracture orienting grooves and a method for forming a cutting element for an earthworking machine. The carbide insert is placed in a groove formed on the cutting edge of the cutting element and there maintained by deforming walls of the cutting element into intimate contact with the carbide insert.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: December 12, 1995
    Assignee: Caterpillar Inc.
    Inventors: Richard L. Adrian, Phillip J. Shankwitz