# US 10,767,478 B2 · Diamond tipped unitary holder/bit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,478 B2 - Document ID: US10767478B2 - Status: Granted - Kind: B2 - Application number: 16/038,416 - Filed: 2018-07-18 - Published: 2019-10-10 - Granted: 2020-09-08 - Earliest claimed: 2013-09-18 - Assignees: The Sollami Company - Applicants: The Sollami Company - Inventors: Phillip Sollami - Web page: https://patentgrep.com/patent/US10767478B2 ## CPC - E21C 35/183: with inserts or layers of wear-resisting material {(drill bits with wear-resistant parts E21B10/46)} - E21C 35/19: Means for fixing picks or holders - E21C 35/188: {characterised by adaptations to use an extraction tool} - E21C 35/197: using sleeves, rings or the like, as main fixing elements - E21C 35/1831: {Fixing methods or devices} - E21C: MINING OR QUARRYING ## Abstract A unitary diamond bit/holder, tool, and/or pick assembly that includes a forward extension axially extending from a body of the bit/holder and a tungsten carbide ring mounted in an annular trough at a forward end of the body around the forward extension. An axially shortened diamond tipped bit tip insert is brazed to the forward extension, within a bore of the forward extension, and/or to a tungsten carbide plug which is then seated within a bore of the forward extension. ## Claims ### Claim 1 A tool comprising: a body comprising an annular trough and a forward extension axially extending from the annular trough to a forward end of the body; a shank extending axially from a bottom of the body; an annular tungsten carbide ring comprising a ring bore, the forward extension extending through the ring bore, and the annular tungsten carbide ring adapted to be seated and brazed in the annular trough of the body; an outwardly tapered section of the forward extension extending from the annular trough; and a forward extension bore of the forward extension extending axially inwardly from the forward end of the body to a bore termination within the forward extension. ### Claim 2 (depends on 1) The tool of claim 1, wherein the bore termination comprises one of a flat shape, a conical shape, and a frustoconical shape. ### Claim 3 (depends on 1) The tool of claim 1, further comprising: a generally cylindrical section of the forward extension adjacent the outwardly tapered section, the generally cylindrical section extending to the forward end of the body. ### Claim 4 (depends on 1) The tool of claim 1, further comprising: a bit tip insert comprising a tip, a base subjacent the tip, and a distal end opposite the tip, the bit tip insert adapted to be seated in the forward extension bore of the distal end of the bit tip insert adapted to be brazed in the bore termination of the forward extension. ### Claim 5 (depends on 1) The tool of claim 1, the bore termination adjacent the outwardly tapered section of the forward extension. ### Claim 6 A tool comprising: a body comprising an annular trough and a forward extension axially extending from the annular trough to a forward end of the body; a shank extending axially from a bottom of the body; an annular tungsten carbide ring comprising a ring bore, the forward extension extending through the ring bore, and the annular tungsten carbide ring adapted to be seated and brazed in the annular trough of the body; a forward extension bore of the forward extension extending axially inwardly from the forward end of the body to a bore termination within the forward extension; a generally cylindrical section of the forward extension including an annular wall, the generally cylindrical section axially extending inwardly from the forward end of the body, the forward extension bore extending axially through the generally cylindrical section of the forward extension to the bore termination adjacent an outwardly tapered section of the forward extension; and the outwardly tapered section subjacent the generally cylindrical section of the forward extension, a distal end of the outwardly tapered section of the forward extension integrally formed with the annular trough of the body. ### Claim 7 (depends on 6) The tool of claim 6, further comprising: a bit tip insert comprising a tip, a base subjacent the tip, and a distal end opposite the tip, the bit tip insert adapted to be seated in the forward extension bore of the distal end of the bit tip insert adapted to be brazed in the bore termination of the forward extension. ### Claim 8 (depends on 7) The tool of claim 7, wherein the annular wall of the generally cylindrical section of the forward extension is machined away after the distal end of the bit tip insert is brazed in the bore termination. ### Claim 9 (depends on 7) The tool of claim 7, further comprising: an overlay applied to an outer surface of the tip of the bit tip insert, the overlay comprising at least one of a: single coating of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material; single outer layer of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material; multiple coatings of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material; and multiple layers of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material. ### Claim 10 (depends on 6) The tool of claim 6, wherein the bore termination comprises one of a flat shape, a conical shape, and a frustoconical shape. ### Claim 11 A tool comprising: a body comprising an annular trough and a forward extension axially extending from the annular trough to a forward end of the body; a shank extending axially from a bottom of the body; an annular tungsten carbide ring comprising a ring bore, the forward extension extending through the ring bore, and the annular tungsten carbide ring adapted to be seated and brazed in the annular trough of the body; a forward extension bore of the forward extension extending axially inwardly from the forward end of the body to a bore termination within the forward extension; a generally cylindrical section of the forward extension including an annular wall, the generally cylindrical section axially extending inwardly from the forward end of the body; an outwardly tapered section subjacent the generally cylindrical section of the forward extension, a distal end of the outwardly tapered section of the forward extension integrally formed with the annular trough of the body; and the forward extension bore extending axially through the generally cylindrical section of the forward extension to the bore termination adjacent the distal end of the outwardly tapered section of the forward extension. ### Claim 12 (depends on 11) The tool of claim 11, further comprising: a bit tip insert comprising a tip, a base subjacent the tip, and a distal end opposite the tip, the bit tip insert adapted to be seated in the forward extension bore of the distal end of the bit tip insert adapted to be brazed in the bore termination of the forward extension. ### Claim 13 (depends on 12) The tool of claim 12, wherein the annular wall of the generally cylindrical section of the forward extension is machined away after the bit tip insert is seated in the forward extension bore. ### Claim 14 (depends on 11) The tool of claim 11, wherein the bore termination comprises one of a flat shape, a conical shape, and a frustoconical shape. ### Claim 15 (depends on 11) The tool of claim 11, the bore termination adjacent the annular trough. ### Claim 16 A tool comprising: a body comprising an annular trough and a forward extension axially extending from the annular trough to a forward end of the body; a shank extending axially from a bottom of the body; an annular tungsten carbide ring comprising a ring bore, the forward extension extending through the ring bore, and the annular tungsten carbide ring adapted to be seated and brazed in the annular trough of the body; a forward extension bore of the forward extension extending axially inwardly from the forward end of the body to a bore termination within the forward extension; a bit tip insert comprising a tip, a base subjacent the tip, and a distal end opposite the tip, the distal end of the bit tip insert adapted to be brazed to a forward end of a generally cylindrical tungsten carbide plug; and a distal end of the generally cylindrical tungsten carbide plug adapted to be seated and brazed in the bore termination of the forward extension and the bit tip insert adapted to be seated in the generally cylindrical section of the forward extension. ### Claim 17 (depends on 16) The tool of claim 16, wherein the annular wall of the generally cylindrical section of the forward extension is machined away after the bit tip insert is seated in the forward extension bore. ### Claim 18 (depends on 16) The tool of claim 16, further comprising: an overlay applied to an outer surface of the tip of the bit tip insert, the overlay comprising at least one of a: single coating of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material; single outer layer of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material; multiple coatings of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material; and multiple layers of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material. ### Claim 19 (depends on 16) The tool of claim 16, the forward extension bore being generally cylindrical. ### Claim 20 (depends on 16) The tool of claim 16, the bore termination adjacent the annular trough. ### Claim 21 (depends on 16) The tool of claim 16, wherein the bore termination comprises one of a flat shape, a conical shape, and a frustoconical shape. ### Claim 22 A tool comprising: a body comprising an annular trough and a forward extension axially extending from the annular trough to a forward end of the body; a shank extending axially from a bottom of the body; an annular tungsten carbide ring comprising a ring bore, the forward extension extending through the ring bore, and the annular tungsten carbide ring adapted to be seated and brazed in the annular trough of the body; a forward extension bore of the forward extension extending axially inwardly from the forward end of the body to a bore termination within the forward extension; a generally cylindrical section of the forward extension including an annular wall, the generally cylindrical section axially extending inwardly from the forward end of the body; an outwardly tapered section subjacent the generally cylindrical section of the forward extension, a distal end of the outwardly tapered section of the forward extension integrally formed with the annular trough of the body; and the forward extension bore extending axially through the generally cylindrical section of the forward extension to the bore termination adjacent the distal end of the outwardly tapered section of the forward extension. ### Claim 23 (depends on 22) The tool of claim 22, further comprising: a generally cylindrical bore section of the forward extension bore extending axially inwardly from the forward end of the body and the generally cylindrical section of the forward extension to a location adjacent a forward end of the outwardly tapered section of the forward extension; and a tapered bore section of the forward extension bore extending axially inwardly from the distal end of the generally cylindrical bore section of the forward extension to the bore termination. ### Claim 24 (depends on 23) The tool of claim 23, further comprising: a bit tip insert comprising a tip, a base subjacent the tip, and a distal end opposite the tip, the distal end of the bit tip insert adapted to be brazed to a forward end of a tapered tungsten carbide plug; and a distal end of the tapered tungsten carbide plug adapted to be seated and brazed in the bore termination of the forward extension and the bit tip insert adapted to be seated in the generally cylindrical section of the forward extension. ### Claim 25 (depends on 24) The tool of claim 24, wherein the distal end of the tapered tungsten carbide plug comprises one of a flat shape, a conical shape, and a frustoconical shape. ### Claim 26 (depends on 24) The tool of claim 24, wherein the annular wall of the generally cylindrical section of the forward extension is machined away after the bit tip insert is seated in the forward extension bore. ### Claim 27 (depends on 24) The tool of claim 24, further comprising: an overlay applied to an outer surface of the tip of the bit tip insert, the overlay comprising at least one of a: single coating of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material; single outer layer of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material; multiple coatings of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material; and multiple layers of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material. ### Claim 28 (depends on 22) The tool of claim 22, wherein the bore termination comprises one of a flat shape, a conical shape, and a frustoconical shape. ### Claim 29 (depends on 22) The tool of claim 22, the bore termination adjacent the annular trough. ### Claim 30 A tool comprising: a body comprising an annular trough and a forward extension axially extending from the annular trough to a forward end of the body; a shank extending axially from a bottom of the body; an annular tungsten carbide ring comprising a ring bore, the forward extension extending through the ring bore, and the annular tungsten carbide ring adapted to be seated and brazed in the annular trough of the body; a solid generally cylindrical section of the forward extension extending axially inwardly from the forward end of the body; and an outwardly tapered section subjacent the generally cylindrical section of the forward extension, a distal end of the outwardly tapered section of the forward extension integrally formed with the annular trough of the body. ### Claim 31 (depends on 30) The tool of claim 30, further comprising: a bit tip insert comprising a tip, a base subjacent the tip, and a distal end opposite the tip, the distal end of the bit tip insert adapted to be brazed to a forward surface of the solid generally cylindrical section of the forward extension. ### Claim 32 (depends on 31) The tool of claim 31, further comprising: an overlay applied to an outer surface of the tip of the bit tip insert, the overlay comprising at least one of a: single coating of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material; single outer layer of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material; multiple coatings of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material; and multiple layers of at least one of industrial diamond material, natural diamond, polycrystalline diamond (PCD) material, and polycrystalline diamond composite or PCD material.