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8136887 |
Non-rotating pick with a pressed in carbide segment
In one aspect of the present invention, a high impact resistant tool has a superhard material bonded to a cemented metal carbide substrate at a non-planar interface. The cemented metal carbide...
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8123302 |
Impact tool
An impact tool for use with a driving mechanism, the impact tool including an impact tip formed from a super hard material and having an apex and an attachment end, with the attachment end being...
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8104551 |
Excavation tool
Provided is an excavation tool which can firmly fix a locking pin so that the locking pin does not move even in the case of an impact during excavation and/or the locking pin being pushed out in...
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8079648 |
Cold-formed cutting tool
A cutting tool body that includes an elongate steel body, which has an axial forward end and an axial rearward end. The elongate steel body contains at the axial forward end thereof a cold-headed...
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8061784 |
Retention system
A retention assembly, comprises a carbide bolster comprising a cavity formed in its base end. A shaft comprises an inserted end disposed within the cavity. The shaft is disposed within a hollow...
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8033615 |
Retention system
A retention assembly has a carbide bolster with a first and second segment brazed together, each segment forming at least part of a cavity formed of the bolster. A shaft has an inserted end is...
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8033616 |
Braze thickness control
A degradation tool or assembly comprises an inverted conical face formed in a top end of a tool body, which top face tapers towards a central axis of the tool body. A base end of a carbide bolster...
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8029068 |
Locking fixture for a degradation assembly
In one aspect of the invention, a degradation assembly comprises an impact tip brazed to a carbide bolster. A stem protrudes from the bolster, being adapted to be retained within a bore connected...
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8020940 |
Mining and demolition tool
Apparatus, methods, and other embodiments associated with a mining and demolition tool are described herein. In an embodiment, a mining bit tool includes a mining and demolition bit tool base and a...
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8007049 |
Breaking or excavating tool with cemented tungsten carbide insert and ring
An exemplary breaking or excavating tool includes a body having a mounting end and a working end. A seating surface at the working end includes a cavity and axially projecting sidewalls formed...
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8007048 |
Breaking or excavating tool with cemented tungsten carbide insert and ring
An exemplary breaking or excavating tool includes a body having a mounting end and a working end. A seating surface at the working end includes a cavity and axially projecting sidewalls formed...
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8007051 |
Shank assembly
In one aspect of the invention, a pick comprises a carbide bolster disposed intermediate an impact tip and a shank assembly. The impact tip comprises a superhard material bonded to a carbide...
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7997661 |
Tapered bore in a pick
In one aspect of the present invention, a high impact resistant excavation pick having a super hard material is bonded to a cemented metal carbide substrate at a non-planar interface. The cemented...
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7992944 |
Manually rotatable tool
A degradation assembly comprises a rotary portion and a stationary portion. The rotary portion includes a cemented metal bolster bonded to a tip. The tip comprises a asymmetric, substantially...
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7963617 |
Degradation assembly
A degradation assembly for use with a driving mechanism includes a working portion coupled to a shank assembly. The working portion has an impact tip brazed to a working end of a carbide extension....
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7963615 |
Mining and demolition tool
Apparatus, methods, and other embodiments associated with a mining and demolition tool are described herein. In an embodiment, a mining and demolition bit tool includes a mining tool base and a...
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7963616 |
Rotary cutting pick
A cutting pick comprising an elongate shank and a cutting tip which is mounted to one end of the shank to project from that end. At least two sleeve segments are provided and those segments are...
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7959234 |
Rotatable cutting tool with superhard cutting member
A rotatable cutting tool that is useful for impingement upon a substrate and is adapted to be rotatably retained within the bore of a holder. The rotatable cutting tool includes an elongate cutting...
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7950746 |
Attack tool for degrading materials
An attack tool for degrading materials is disclosed which comprises a base segment comprising an attachment to a driving mechanism, a first wear-resistant segment bonded to the base segment, a...
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7946657 |
Retention for an insert
A degradation assembly for attachment to a driving mechanism used for degrading a formation. The degradation assembly includes both a cutting structure and a tensioning element adapted to connect...
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7946656 |
Retention system
A retention assembly, comprises a carbide bolster comprising a cavity formed in its base end. A shaft comprises an inserted end disposed within the cavity. The shaft is disposed within a hollow...
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7871133 |
Locking fixture
In one aspect of the invention, a degradation assembly comprises an impact tip brazed to a carbide bolster. A stem protrudes from the bolster, being adapted to be retained within a bore connected...
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7669938 |
Carbide stem press fit into a steel body of a pick
In one aspect of the present invention, a high impact resistant tool, having a super hard material is bonded to a cemented metal carbide substrate at a non-planar interface. The cemented metal...
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7661765 |
Braze thickness control
In one aspect of the present invention, a degradation assembly comprises an inverted conical face formed in a top end of a metal body tapering towards a central axis of the metal body. A base end...
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7648210 |
Pick with an interlocked bolster
In one aspect of the invention, a pick comprises a front portion with an impact tip brazed to a carbide bolster. The carbide bolster comprises a cavity which is formed in the bolster's base end and...
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7628233 |
Carbide bolster
A degradation assembly has a carbide bolster brazed within a hole formed in a surface. The bolster has a substantially straight cylindrical portion mostly disposed below the surface and a top end...
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7611210 |
Cutting bit body and method for making the same
A cutting bit body that is a part of a cutting bit that includes a hard insert that is affixed to the cutting bit body and wherein the cutting bit impinges earth strata. The cutting bit body is an...
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7594703 |
Pick with a reentrant
In one aspect of the invention, a pick adapted to degrade man-made or natural formations has a steel body comprising a shank adapted for attachment to a driving mechanism. The pick also has a...
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7568770 |
Superhard composite material bonded to a steel body
In one aspect of the invention, a pick comprises a steel body comprising a formed shank attached to a first end of the body and generally extending along a central axis of the body. An impact tip...
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7523794 |
Wear resistant assembly
In one aspect of the invention, a wear resistant assembly has at least one hard insert disposed within a recess formed within a surface. A hard material substantially surrounds the hard insert and...
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7503629 |
Pick locking device including a clamp element and a retaining pin
A pick locking device for a plow pick that includes a pick shank inserted into a receptor box of a pick holder. The locking device may include a retaining pin and a deformable clamp element. The...
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7464993 |
Attack tool
In one aspect of the invention, an attack tool has a wear-resistant base suitable for attachment to a driving mechanism. A first end of a generally frustoconical first cemented metal carbide...
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7396086 |
Press-fit pick
In one aspect of the invention, a pick comprises a shank attached to a base of a steel body, a cemented metal carbide core press fit into the steel body opposite the shank, and an impact tip bonded...
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7347292 |
Braze material for an attack tool
In one aspect of the invention, a tool has a wear-resistant base suitable for attachment to a driving mechanism and also a hard tip attached to an interfacial surface of the base. The tip has a...
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6938961 |
Apparatus for breaking up solid objects
An improved buster point assembly is disclosed. The improved buster point assembly has an elongated shaft attached to a replaceable tip. The replaceable tip includes a working end and a connecting...
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6846045 |
Reverse taper cutting tip with a collar
A cutting tool has tool body with a seat at a forward end thereof. A hard cutting insert is bonded into the seat. The insert is made of a hard material and Ahas an elongate central portion having a...
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6758530 |
Hardened tip for cutting tools
A cutting tool has a tool body with a seat at the forward end thereof and a cutting insert in the seat. The insert has a central portion made of a hardened material, and surrounding the central...
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6739327 |
Cutting tool with hardened tip having a tapered base
A cutting tool has a centrally located tungsten carbide insert brazed into a seat at the forward end of the tool. The seat has a circular mouth and rearward of the mouth is a frustoconical inner...
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6733087 |
Pick for disintegrating natural and man-made materials
An attack tool for working natural and man-made materials that is made up of one or more segments, including a steel alloy base segment, an intermediate carbide wear protector segment, and a...
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6601620 |
Stump grinding bit and tip therefor
A stump cutter includes a rotary drum, holders mounted on the drum, and cutting bits mounted in respective bores of each holder for rotation relative thereto. Each cutting bit includes a shank...
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6554369 |
Cutting tool with hardened insert
A cutting tool has a tool body with a hardened insert brazed into a cylindrical seat having a given diameter at the forward end of the tool body. The insert has a cutting tip portion, a generally...
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6428111 |
Round-shaft cutter
A round-shaft cutter with a cutter head and a cutter shaft, wherein the cutter head has a cutter tip which is inserted with a base element into a receiver of the cutter head and is there fixed in...
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6428110 |
Cutting tool retainer
A retainer, adapted to engage a recess in a cutting tool for securing the cutting tool to a support block, includes a retainer body having a main portion with first and second ends. The main...
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6343842 |
Roller bit for tunnel-driving machines with segmented cutting rings
The present invention provides a roller bit for tunnel-driving machines. Pursuant to the invention, a cutting ring has at least two or more segments. Accordingly, it is possible to renew the...
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6199451 |
Tool having a tungsten carbide insert
An excavating tool has a tungsten carbide insert which is more wear resistant and not subject to breakage because of bring too brittle. The insert has a semispherical tip, a divergent midsection...
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6199956 |
Round-shank bit for a coal cutting machine
A round-shank bit for a coal cutting machine or the like, having a bit head and a bit shank, wherein the bit head has a bit tip, maintained by a base element in a receptacle of the bit head....
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6196636 |
Cutting bit insert configured in a polygonal pyramid shape and having a ring mounted in surrounding relationship with the insert
A cutting tool configuration includes a cutting bit insert configured in the shape of an octagonal pyramid. The cutting bit insert includes a number of portions, each of which has faces which slope...
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6102486 |
Frustum cutting bit arrangement
A frustum cutting insert having a cutting end and a shank end and the cutting end having a cutting edge and inner walls defining a conical tapered surface. First walls in the insert define a cavity...
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5810102 |
Reversible bit assembly
A reversible bit assembly (8) that includes a reversible bit (10) having a shank (20) and a radially enlarged center portion (22) located midway along the longitude of the shank (20). Opposed...
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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...
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