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| Number | Title | Issue Date |
| 7765726 | Sandwich scraper strip having a hard metal core 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 i... | 08/03/2010 |
| 7690138 | Rolling assembly mounted on a trencher 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 alo... | 04/06/2010 |
| 7676968 | Roller assembly 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 polycrysta... | 03/16/2010 |
| 7204560 | Rotary cutting bit with material-deflecting ledge A cutting bit includes a body having a front surface and a side surface, the side surface including a shoulder below the front surface and extending substantially perpendicular to a central axis of the body, and a ring that is harder than the body attached to the bo... | 04/17/2007 |
| 7104341 | Low disturbance deep tillage point Ripper point structure includes a nose with a tapered top that initiates lift and fracture of compacted soil layers. The tapered top with an included angle of about 100 degrees just forward of the parting wear shin creates a parting stress which increases until the ... | 09/12/2006 |
| 6865829 | Bucket tooth 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 be... | 03/15/2005 |
| 6854527 | Fracture resistant carbide snowplow and grader blades 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.... | 02/15/2005 |
| 6799385 | Abrasion resistant earth working surface and weld stud 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 ... | 10/05/2004 |
| 6745709 | Replaceable ground engaging tip and wear resistant insert therefor 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 fro... | 06/08/2004 |
| 6684538 | Cutting tooth for a trencher chain The present disclosure relates to a cutting tooth for a trencher chain. The tooth includes a base portion aligned along a first plane. The base portion includes structure for allowing the cutting tooth to be connected to the trencher chain. The tooth also... | 02/03/2004 |
| 6647648 | Method of manufacturing a bucket tooth 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 ... | 11/18/2003 |
| 6632045 | Vehicle wheel tooth 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 f... | 10/14/2003 |
| 6571493 | Cutting edge 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.... | 06/03/2003 |
| 6457269 | Ground-engaging tool for an excavation bucket 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... | 10/01/2002 |
| 6154987 | Cutting tooth for a trencher chain The present disclosure relates to a cutting tooth for a trencher chain. The tooth includes a base portion aligned along a first plane. The base portion includes structure for allowing the cutting tooth to be connected to the trencher chain. The tooth also... | 12/05/2000 |
| 6003617 | Insert for board 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 ca... | 12/21/1999 |
| 5881480 | Carbide embedded grader blade 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 ... | 03/16/1999 |
| 5852272 | Wear-resistant overlay forming method and wear-resistant composite members 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, ... | 12/22/1998 |
| 5813474 | Plow blade 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 ... | 09/29/1998 |
| 5778572 | Wear resistant cutting edge and method for making same 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 up... | 07/14/1998 |
| 5743033 | Earthworking machine ground engaging tools having cast-in-place abrasion and impact resistant metal matrix composite components 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 ma... | 04/28/1998 |
| 5647448 | Drill bit having a plurality of teeth 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 ... | 07/15/1997 |
| 5502905 | Tooth having abrasion resistant material applied thereto 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. Howe... | 04/02/1996 |
| 5473829 | Earthworking machine cutting element having carbide insert and method for forming the cutting element 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 o... | 12/12/1995 |
| 5427186 | Method for forming wear surfaces and the resulting part A method for forming a blade adapted to be attached to an earthworking vehicle and the resultant wear resistant blade has a wear surface assembly which includes a carbide insert sandwiched between a steel plate and a composite material within a pocket on ... | 06/27/1995 |
| 5375350 | Excavating tool tooth An excavating tool tooth includes a mounting area (10) and a working area (11). The working area (11) includes longitudinal bars (14-18) made of a hard material. The bars are inserted in the steel and snugly contact the tooth's cutting face. The presence ... | 12/27/1994 |
| 5261170 | Wear strips A wear strip (A) for use on material handling equipment, such as chutes, plough blades, scrapers and gates, comprises an elongate body (30) of metal of substantially rectangular cross-section, and wear resistant tiles (31) bonded to the body and extending... | 11/16/1993 |
| 5111600 | Tooth with hard material applied to selected surfaces Teeth are normally mounted to the cutting edge of a bucket to aid in the penetration of the material being worked. Furthermore, hard material has been applied to selected surfaces of the teeth to increase their wear life. It is advantageous to strategical... | 05/12/1992 |
| 5081774 | Composite excavating tooth A replaceable composite excavating tooth for excavating earth comprises wear-resistant material having a higher hardness than a tooth body and being insert-cast into the tooth body. The performance of the excavating tooth is improved by locating the wear-... | 01/21/1992 |
| 4905386 | Process for unearthing hazardous pipeline A cutting edge member for fitting onto an excavation apparatus wherein the cutting edge member is of softer material than iron for digging around pipelines.... | 03/06/1990 |
| 4903609 | Tamping blade with improved inserts A tamping pad includes cutout along the length of the leading edge thereof to support at least one wear-resistant insert rigidly positioned therein. The wear-resistant insert comprises a body having a first side and a second opposed side, first and second... | 02/27/1990 |
| 4883129 | Bit assembly utilizing carbide insert Ground engaging bits used in abrasive road grading applications utilizing carbide inserts brazed to the leading face of the steel tip are beneficial on motor grader blades. Commercial road grading bit assemblies used consistent thickness, rectangular carb... | 11/28/1989 |
| 4813491 | Tillage point A tillage point for attachment to an excavating or earthmoving apparatus includes a tapered point extending below its longitudinal axis and formed by a convex top surface and concave bottom surface when viewed in side elevation. A convex protuberance axia... | 03/21/1989 |
| 4770253 | Grader blade with tiered inserts on leading edge A grader blade has a steel body with a bottom edge incorporating a pair of tiered, elongated carbide inserts in a forward portion thereof. The carbide inserts, being arranged in a tiered contacting relationship, are disposed in a stepped recess formed in ... | 09/13/1988 |
| 4753299 | Grader blade assembly and pick therefor A blade assembly for hard earth road graders has a support frame for attachment to the mouldboard of the road grader and a plurality of evenly spaced picks located in sockets spaced along the lower edge of the support frame. The picks have spigots to rele... | 06/28/1988 |
| 4715450 | Grader blade with casting/insert assembly on leading edge A grader blade has a steel body with a bottom edge incorporating a substrate of air-hardened tool steel casting material assembling a preformed cemented carbide insert in tiered relationship with, and rearwardly of, a casted layer of carbide grit. The fro... | 12/29/1987 |
| 4711503 | Replaceable tooth for a digging and breaking tool A replaceable tooth article is disclosed for a digging and breaking tool used in a suction head of an excavator consisting of an adapter and a replaceable tooth having a pyramidal outer shape modified with a rounded apex and a plurality of rounded edges. ... | 12/08/1987 |
| 4626034 | Cutter-bit assemblies A cutter-bit assembly employs an arcuate wedge 16 to secure a cutter-bit 2 within a pocket 4 of a holder 1. An additional deformable insert or resilient backing piece 18 is also located in an arcuate gap between the cutter-bit shank and a curved surface o... | 12/02/1986 |
| 4602445 | Locking device This invention refers to a locking device (14) for a wear-parts system (1) and (2) for earth moving machines. The locking device (14) consists of a rigid lock bolt (17) connected to a lock catch (19) which is intended to prevent the lock bolt (17) falling... | 07/29/1986 |
| 4590694 | Snow plow with bar reinforced deformable blade A snow plow is provided comprising a steel member having a mold board at its lower end. A snow plow blade extends below the mold board. The snow plow blade comprises a sheet of lightweight material, preferably urethane. This sheet is resistant to corrosio... | 05/27/1986 |
