US2015211365A1PendingUtilityA1

Multiple Cutters on a Degradation Pick

48
Individually held — no corporate assignee on recordPriority: Jan 30, 2014Filed: Jan 30, 2014Published: Jul 30, 2015
Est. expiryJan 30, 2034(~7.5 yrs left)· nominal 20-yr term from priority
Inventors:David R. HallFrancis Leany
E21C 35/1833E21C 35/183E21C 2035/191E21C 35/191
48
PatentIndex Score
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Claims

Abstract

A degradation pick for degrading a surface comprises a substantially conical body with a pointed end. A shank is attached to the substantially conical body opposite the pointed end. At least one cutter is disposed within at least one cavity which itself is disposed on an exterior surface of the substantially conical body between the pointed end and the shank.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A degradation pick, comprising:
 a substantially conical body comprising a pointed end;   a shank attached to the substantially conical body opposite the pointed end;   at least one cavity disposed on an exterior surface of the substantially conical body between the pointed end and the shank; and   at least one cutter disposed within the cavity.   
     
     
         2 . The degradation pick of  claim 1 , wherein the at least one cutter comprises polycrystalline diamond attached to a carbide substrate. 
     
     
         3 . The degradation pick of  claim 2 , wherein the polycrystalline diamond comprises a substantially conical geometry. 
     
     
         4 . The degradation pick of  claim 2 , wherein the polycrystalline diamond comprises a substantially hemispherical geometry. 
     
     
         5 . The degradation pick of  claim 2 , wherein the polycrystalline diamond comprises a substantially cylindrical geometry. 
     
     
         6 . The degradation pick of  claim 2 , wherein the carbide substrate is disposed within the at least one cavity. 
     
     
         7 . The degradation pick of  claim 2 , wherein the polycrystalline diamond is disposed outside of the at least one cavity. 
     
     
         8 . The degradation pick of  claim 2 , wherein the polycrystalline diamond of the cutter protrudes from the cavity. 
     
     
         9 . The degradation pick of  claim 1 , wherein the at least one cutter comprises a central axis perpendicular to the exterior surface of the substantially conical body. 
     
     
         10 . The degradation pick of  claim 1 , wherein the at least one cutter comprises a central axis offset from a central axis of the substantially conical body by 5 to 85 degrees. 
     
     
         11 . The degradation pick of  claim 1 , further comprising a plurality of cutters disposed on the exterior surface of the substantially conical body between the pointed end and the shank. 
     
     
         12 . The degradation pick of  claim 11 , wherein a combination of the plurality of cutters forms between 1 and 40% of a circumference of the substantially conical body. 
     
     
         13 . The degradation pick of  claim 11 , wherein the plurality of cutters are equally spaced from the pointed end of the substantially conical body. 
     
     
         14 . The degradation pick of  claim 1 , further comprising a block with a hole therein disposed on a surface of a rotatable drum, wherein the shank of the substantially conical body is disposed within the hole. 
     
     
         15 . The degradation pick of  claim 14 , wherein the block is disposed substantially adjacent an edge of the rotatable drum and the hole sits at an angle offset from a line perpendicular to an axis of rotation of the rotatable drum. 
     
     
         16 . The degradation pick of  claim 15 , wherein the angle of the hole causes the pointed end of the substantially conical body to overhang the edge of the rotatable drum. 
     
     
         17 . The degradation pick of  claim 16 , wherein the angle of the hole causes the at least one cutter to be disposed substantially on a line perpendicular to the axis of rotation of the rotatable drum and passing through the edge of the rotatable drum. 
     
     
         18 . The degradation drum of  claim 14 , wherein the at least one cutter is disposed along a line perpendicular to an axis of rotation of the rotatable drum and in a direction of rotation. 
     
     
         19 . The degradation drum of  claim 1 , further comprising a cutting element disposed on the pointed end of the substantially conical body. 
     
     
         20 . The degradation pick of  claim 1 , wherein the shank comprises a central axis offset from a central axis of the substantially conical body.

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