| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 299106000 | Rolling or rotatable-type bit mount | 16 |
| 20090058173 | HYBRID RETAINER SLEEVE FOR TOOL INSERTED INTO BLOCK - A sleeve utilizing two methods of retention—a friction fit and a rear retention feature—is disclosed. The sleeve includes a circumferentially compressible portion that provides a friction fit when inserted into a bore and includes a projected portion around an end circumference that is used to mate with the rear of a tool block and urges the sleeve (and the tool) rearward. The disclosure also relates to a tool and block assembly, a method of retaining a tool in a holder and a mining machine incorporating the sleeve. | 03-05-2009 |
| 20090261646 | Indexable Cutting Tool System - A system for excavating and/or trenching hard and soft ground material includes a support block having a bore with a cylindrical portion and a non-cylindrical portion with flat surfaces and a cutting tool mounted in the bore, which may be a non-rotatable cutting tool having a shank with flat surfaces or a rotatable cutting tool having a shank with a cylindrical portion. The non-cylindrical portion of the bore rotatably engages the cylindrical portion of the rotatable cutting tool and the flat surfaces of the bore engage the flat surfaces of the non-rotatable cutting tool. A further embodiment includes a support block having a bore with flat surfaces along the entire length of the bore that engage the flat surfaces of the shank of the non-rotatable cutting tool and which bore receives the cylindrical portion of the shank of the rotatable cutting tool but does not restrain rotation thereof. In yet another embodiment, the support block may have two non-cylindrical portions and a single cylindrical portion, while the cutting tool may have a shank with two non-cylindrical portions and a single cylindrical portion corresponding to those within the bore of the support block. | 10-22-2009 |
| 20100219676 | ROLLER DRILL OR ROLLER BIT - A roller drill for removing material, such as in particular rock, minerals or the like, according to the undercutting principle, comprising a cutting face which is formed concentrically around a central axis and widens conically toward an end face of the roller drill, and includes a supporting body which is arranged on the inner side of the cutting face and extends up to the end face of the tool. In order to provide a roller drill or a roller bit of which the tool life or service life is improved compared with the prior art, the cutting face is made of a harder material than the supporting body and the supporting body forms an annular web which is conical at least at an outer circumferential wall and which defines with its inner circumferential wall a free space at the end face of the tool. The tool can resharpen itself automatically due to the free space and the dissimilar material combination. | 09-02-2010 |
| 20100264721 | Seal with Rigid Element for Degradation Assembly - In one aspect of the present invention, a degradation assembly comprises a pressing seal element and a pressurized rigid element disposed intermediate a rotating component and a stationary component. The rotating component comprising an impact tip bonded to an end opposing the stationary component. The seal element may energize the rigid element against one of the components to form a slidable seal capable of holding lubricant within the assembly and keeping debris out while still rotating. | 10-21-2010 |
| 20100320829 | Bit Holder Usable in Bit Blocks Having Either of a Cylindrical or Non-Locking Taper Bore - A bit holder for use in a bit assembly in road milling, mining and trenching equipment has a hollow generally cylindrical shank and first and second elongate slots positioned in spaced axial relation through the shank. The first slot extends along the shank to the distal end thereof. The second slot may be altered in length and/or shaped to fine tune the outward radial force the shank exerts against the bore of a bit holder block into which it is inserted. | 12-23-2010 |
| 20110204703 | Bit Assemblies for Road Milling Mining and Trenching Equipment - An improved bit assembly for road milling, mining and trenching equipment includes a streamlined tip assembly that is a combination of conical and cylindrical in shape and devoid of protrusions or annular indentations that might impede the flow of removed material over and around the bit assembly or provide space for removed material to become clogged or imbedded on the tip assembly. The generally cylindrical hollow shank that mounts the bit holder to the bit block includes at least one axially aligned slot along its side wall that allows the side wall to supply radial force to maintain the bit holder in the bit block. | 08-25-2011 |
| 20120025591 | ROTATABLE GRADING PICK WITH DEBRIS CLEARING FEATURE - A rotatable grading pick has a head portion, a shank portion extending rearwardly from the head portion, and a polygonal portion on the rotatable grading pick. At least a portion of the outer perimeter of the polygonal portion can be engaged by a tool so that the polygonal portion can be rotated, and the shank portion can be rotated to clear debris between the shank portion and a retainer placed around a part of the shank portion. | 02-02-2012 |
| 20120025592 | Attack Tool - In one aspect of the invention, an attack tool is disclosed which has a wear-resistant base suitable for attachment to a driving mechanism, a first cemented metal carbide segment brazed to the base at a first interface, and a second metal carbide segment brazed to the first carbide segment at a second interface opposite the base. | 02-02-2012 |
| 20120062017 | TWO PIECE TOOL HOLDER ASSEMBLY - A tool holder assembly on a rotating unit, e.g. drum of an earth strata cutting assembly, includes a base mountable to the rotating unit and a removable member mounted to the base and having a support block for carrying an earth strata cutting tool. The base includes an upright member. In one aspect, the removable member substantially encloses the upright member and the removable member includes a V-shaped surface engaging a V-shaped surface of the upright member for a close tolerance fit. In another aspect, the removable member partially encloses the upright member and the removable member includes a circular surface engaging a circular surface of the upright member for a close tolerance fit. | 03-15-2012 |
| 20120068527 | QUICK-CHANGE TOOL HOLDER SYSTEM FOR A CUTTING TOOL - The present invention relates to a quick-change tool holder system, comprising a base part with a quick-change tool holder receptacle and a quick-change tool holder having a cutting tool receptacle configured for insertion into the quick-change tool holder receptacle. | 03-22-2012 |
| 20120212034 | CUTTER ASSEMBLY FOR TUNNEL BORING MACHINE WITH PRESSURE COMPENSATION - A pressure-compensated cutter assembly for a tunnel boring machine includes a shaft a cutter ring assembly rotatably mounted on the shaft, and first and second end retainers non-rotatably attached to the shaft. Rotary seal groups, immersed in lubricant, provide a moving seal between the rotating cutter ring assembly and the end retainers. A movable piston member is exposed to ambient pressures, and contacts the lubricant, such that increasing ambient pressure will increase the lubricant pressure, thereby keeping the pressure differential across the seal small. In one embodiment, the piston is a floating retainer portion. In another embodiment, the piston is an annular piston, and in another embodiment, the piston is a plurality of smaller pistons disposed in the first retainer. | 08-23-2012 |
| 20120280559 | Casing Block - A preset recessed casing block for retaining a cutter bit is provided that can be mass-produced and easily installed in the casing of a core barrel. The block has a size and shape that provides for quick and easy insertion and welding into a casing. The block has a cavity that receives and retains a cutter bit while allowing for the removal or extraction of the cutter bit when the bit becomes worn or broken. Because the block is manufactured to fit inside the casing, wear on the block is minimized and it's lifetime extended. The cavity in the block and the shape of the block itself may have different, preset angles and pitches, to allow for the same size block to be placed in a variety of locations around the casing, thereby enabling the manufacturer to produce a variable, raking pattern of the cutter bits for improved annulus cutting. | 11-08-2012 |
| 20140042795 | CUTTING BIT AND BIT HOLDER - A cutting bit for use in a heavy-duty mining, drilling or milling operation includes a generally conical body, a first end of which presents a cutting point and a second end of which presents an axially extending recess. The body has a generally convex surface portion. Locking means releasably and rotatably connect the cutting bit to a protruding part of a bit holder. The recess has an entrance portion presenting a generally conical surface portion. A corresponding bit holder is presented as well as a system using the cutting bit and bit holder. | 02-13-2014 |
| 20140232172 | Shank-Type Pick - The invention relates to a shank bit for a road milling machine or the like, having a bit head and a bit shank, the bit shank comprising a first cylindrical segment that is indirectly or directly adjacent to the bit head, and the bit shank comprising a second cylindrical segment that, facing away from the bit head, is indirectly or directly adjacent to the first cylindrical segment, and the diameter of the second cylindrical segment differing from the diameter of the first cylindrical segment. In a shank bit of this kind, improved utilization properties result from the fact that the first cylindrical segment has a diameter in the range between 18 mm and 30 mm, and an extent in the direction of the longitudinal center axis of the bit shank less than 30 mm. | 08-21-2014 |
| 20140265530 | TIP FOR A PICK TOOL, METHOD OF MAKING SAME AND PICK TOOL COMPRISING SAME - A tip for a pick tool, comprising a polycrystalline diamond (PCD) structure joined to a substrate body. The PCD structure has a strike surface including an apex opposite a boundary with the substrate body. At least an outer volume of the PCD as structure contains filler material between diamond grains, the content of the filler material being more than 5 weight percent of the PCD material in the outer volume. The outer volume is proximate at least an area of the strike surface including the apex, and the thickness of the PCD structure between the apex and the boundary with the substrate body is at least 2.5 mm. | 09-18-2014 |
| 20140339882 | AXIALLY STABLE RETENTION MECHANISM FOR PICKS AND CUTTING ELEMENTS - A cutting element assembly includes a cutting element partially disposed within a support and a retention mechanism disposed between the cutting element and the support, both the axial and radial dimensions of the retention mechanism being deformable. | 11-20-2014 |
| 20090058173 | HYBRID RETAINER SLEEVE FOR TOOL INSERTED INTO BLOCK - A sleeve utilizing two methods of retention—a friction fit and a rear retention feature—is disclosed. The sleeve includes a circumferentially compressible portion that provides a friction fit when inserted into a bore and includes a projected portion around an end circumference that is used to mate with the rear of a tool block and urges the sleeve (and the tool) rearward. The disclosure also relates to a tool and block assembly, a method of retaining a tool in a holder and a mining machine incorporating the sleeve. | 03-05-2009 |
| 20090261646 | Indexable Cutting Tool System - A system for excavating and/or trenching hard and soft ground material includes a support block having a bore with a cylindrical portion and a non-cylindrical portion with flat surfaces and a cutting tool mounted in the bore, which may be a non-rotatable cutting tool having a shank with flat surfaces or a rotatable cutting tool having a shank with a cylindrical portion. The non-cylindrical portion of the bore rotatably engages the cylindrical portion of the rotatable cutting tool and the flat surfaces of the bore engage the flat surfaces of the non-rotatable cutting tool. A further embodiment includes a support block having a bore with flat surfaces along the entire length of the bore that engage the flat surfaces of the shank of the non-rotatable cutting tool and which bore receives the cylindrical portion of the shank of the rotatable cutting tool but does not restrain rotation thereof. In yet another embodiment, the support block may have two non-cylindrical portions and a single cylindrical portion, while the cutting tool may have a shank with two non-cylindrical portions and a single cylindrical portion corresponding to those within the bore of the support block. | 10-22-2009 |
| 20100219676 | ROLLER DRILL OR ROLLER BIT - A roller drill for removing material, such as in particular rock, minerals or the like, according to the undercutting principle, comprising a cutting face which is formed concentrically around a central axis and widens conically toward an end face of the roller drill, and includes a supporting body which is arranged on the inner side of the cutting face and extends up to the end face of the tool. In order to provide a roller drill or a roller bit of which the tool life or service life is improved compared with the prior art, the cutting face is made of a harder material than the supporting body and the supporting body forms an annular web which is conical at least at an outer circumferential wall and which defines with its inner circumferential wall a free space at the end face of the tool. The tool can resharpen itself automatically due to the free space and the dissimilar material combination. | 09-02-2010 |
| 20100264721 | Seal with Rigid Element for Degradation Assembly - In one aspect of the present invention, a degradation assembly comprises a pressing seal element and a pressurized rigid element disposed intermediate a rotating component and a stationary component. The rotating component comprising an impact tip bonded to an end opposing the stationary component. The seal element may energize the rigid element against one of the components to form a slidable seal capable of holding lubricant within the assembly and keeping debris out while still rotating. | 10-21-2010 |
| 20100320829 | Bit Holder Usable in Bit Blocks Having Either of a Cylindrical or Non-Locking Taper Bore - A bit holder for use in a bit assembly in road milling, mining and trenching equipment has a hollow generally cylindrical shank and first and second elongate slots positioned in spaced axial relation through the shank. The first slot extends along the shank to the distal end thereof. The second slot may be altered in length and/or shaped to fine tune the outward radial force the shank exerts against the bore of a bit holder block into which it is inserted. | 12-23-2010 |
| 20110204703 | Bit Assemblies for Road Milling Mining and Trenching Equipment - An improved bit assembly for road milling, mining and trenching equipment includes a streamlined tip assembly that is a combination of conical and cylindrical in shape and devoid of protrusions or annular indentations that might impede the flow of removed material over and around the bit assembly or provide space for removed material to become clogged or imbedded on the tip assembly. The generally cylindrical hollow shank that mounts the bit holder to the bit block includes at least one axially aligned slot along its side wall that allows the side wall to supply radial force to maintain the bit holder in the bit block. | 08-25-2011 |
| 20120025591 | ROTATABLE GRADING PICK WITH DEBRIS CLEARING FEATURE - A rotatable grading pick has a head portion, a shank portion extending rearwardly from the head portion, and a polygonal portion on the rotatable grading pick. At least a portion of the outer perimeter of the polygonal portion can be engaged by a tool so that the polygonal portion can be rotated, and the shank portion can be rotated to clear debris between the shank portion and a retainer placed around a part of the shank portion. | 02-02-2012 |
| 20120025592 | Attack Tool - In one aspect of the invention, an attack tool is disclosed which has a wear-resistant base suitable for attachment to a driving mechanism, a first cemented metal carbide segment brazed to the base at a first interface, and a second metal carbide segment brazed to the first carbide segment at a second interface opposite the base. | 02-02-2012 |
| 20120062017 | TWO PIECE TOOL HOLDER ASSEMBLY - A tool holder assembly on a rotating unit, e.g. drum of an earth strata cutting assembly, includes a base mountable to the rotating unit and a removable member mounted to the base and having a support block for carrying an earth strata cutting tool. The base includes an upright member. In one aspect, the removable member substantially encloses the upright member and the removable member includes a V-shaped surface engaging a V-shaped surface of the upright member for a close tolerance fit. In another aspect, the removable member partially encloses the upright member and the removable member includes a circular surface engaging a circular surface of the upright member for a close tolerance fit. | 03-15-2012 |
| 20120068527 | QUICK-CHANGE TOOL HOLDER SYSTEM FOR A CUTTING TOOL - The present invention relates to a quick-change tool holder system, comprising a base part with a quick-change tool holder receptacle and a quick-change tool holder having a cutting tool receptacle configured for insertion into the quick-change tool holder receptacle. | 03-22-2012 |
| 20120212034 | CUTTER ASSEMBLY FOR TUNNEL BORING MACHINE WITH PRESSURE COMPENSATION - A pressure-compensated cutter assembly for a tunnel boring machine includes a shaft a cutter ring assembly rotatably mounted on the shaft, and first and second end retainers non-rotatably attached to the shaft. Rotary seal groups, immersed in lubricant, provide a moving seal between the rotating cutter ring assembly and the end retainers. A movable piston member is exposed to ambient pressures, and contacts the lubricant, such that increasing ambient pressure will increase the lubricant pressure, thereby keeping the pressure differential across the seal small. In one embodiment, the piston is a floating retainer portion. In another embodiment, the piston is an annular piston, and in another embodiment, the piston is a plurality of smaller pistons disposed in the first retainer. | 08-23-2012 |
| 20120280559 | Casing Block - A preset recessed casing block for retaining a cutter bit is provided that can be mass-produced and easily installed in the casing of a core barrel. The block has a size and shape that provides for quick and easy insertion and welding into a casing. The block has a cavity that receives and retains a cutter bit while allowing for the removal or extraction of the cutter bit when the bit becomes worn or broken. Because the block is manufactured to fit inside the casing, wear on the block is minimized and it's lifetime extended. The cavity in the block and the shape of the block itself may have different, preset angles and pitches, to allow for the same size block to be placed in a variety of locations around the casing, thereby enabling the manufacturer to produce a variable, raking pattern of the cutter bits for improved annulus cutting. | 11-08-2012 |
| 20140042795 | CUTTING BIT AND BIT HOLDER - A cutting bit for use in a heavy-duty mining, drilling or milling operation includes a generally conical body, a first end of which presents a cutting point and a second end of which presents an axially extending recess. The body has a generally convex surface portion. Locking means releasably and rotatably connect the cutting bit to a protruding part of a bit holder. The recess has an entrance portion presenting a generally conical surface portion. A corresponding bit holder is presented as well as a system using the cutting bit and bit holder. | 02-13-2014 |
| 20140232172 | Shank-Type Pick - The invention relates to a shank bit for a road milling machine or the like, having a bit head and a bit shank, the bit shank comprising a first cylindrical segment that is indirectly or directly adjacent to the bit head, and the bit shank comprising a second cylindrical segment that, facing away from the bit head, is indirectly or directly adjacent to the first cylindrical segment, and the diameter of the second cylindrical segment differing from the diameter of the first cylindrical segment. In a shank bit of this kind, improved utilization properties result from the fact that the first cylindrical segment has a diameter in the range between 18 mm and 30 mm, and an extent in the direction of the longitudinal center axis of the bit shank less than 30 mm. | 08-21-2014 |
| 20140265530 | TIP FOR A PICK TOOL, METHOD OF MAKING SAME AND PICK TOOL COMPRISING SAME - A tip for a pick tool, comprising a polycrystalline diamond (PCD) structure joined to a substrate body. The PCD structure has a strike surface including an apex opposite a boundary with the substrate body. At least an outer volume of the PCD as structure contains filler material between diamond grains, the content of the filler material being more than 5 weight percent of the PCD material in the outer volume. The outer volume is proximate at least an area of the strike surface including the apex, and the thickness of the PCD structure between the apex and the boundary with the substrate body is at least 2.5 mm. | 09-18-2014 |
| 20140339882 | AXIALLY STABLE RETENTION MECHANISM FOR PICKS AND CUTTING ELEMENTS - A cutting element assembly includes a cutting element partially disposed within a support and a retention mechanism disposed between the cutting element and the support, both the axial and radial dimensions of the retention mechanism being deformable. | 11-20-2014 |
