US2015035344A1PendingUtilityA1

Pick Tool with a Removable Shank

42
Individually held — no corporate assignee on recordPriority: Jul 31, 2013Filed: Jul 31, 2013Published: Feb 5, 2015
Est. expiryJul 31, 2033(~7 yrs left)· nominal 20-yr term from priority
Inventors:David R. HallFrancis LeanyDavid WahlquistBraeden BrownBenjamin J. Spence
E21C 35/18E21C 35/1831
42
PatentIndex Score
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Cited by
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References
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Claims

Abstract

Pick tool assemblies for use with formation degradation machines, such as road milling, mining, trenching or drilling machines, may be disposed on rotatable drums, wheels, continuous chains, drill bits or the like and brought into engagement with such formations as rock, asphalt, coal or concrete to break up or otherwise degrade the formations. Such pick tool assemblies may comprise a shank comprising a forward end and a rearward end wherein the rearward end may be formed for retention in a bore of a block attached to a driving mechanism and the forward end may comprise a body detachably and nonrotatably fastened thereto. Further, an impact tip may be bonded opposite the rearward end.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A pick tool assembly, comprising:
 a shank comprising a forward end and a rearward end;   the rearward end formed for retention in a bore of a block attached to a driving mechanism;   the forward end comprising a body detachably and nonrotatably fastened thereto; and   an impact tip bonded opposite the rearward end.   
     
     
         2 . The pick tool assembly of  claim 1 , wherein the impact tip is bonded to the forward end. 
     
     
         3 . The pick tool assembly of  claim 2 , wherein the forward end is disposed within a cavity passing completely through the body. 
     
     
         4 . The pick tool assembly of  claim 1 , wherein the impact tip is bonded to the body. 
     
     
         5 . The pick tool assembly of  claim 4 , wherein the forward end is disposed within a socket of the body. 
     
     
         6 . The pick tool assembly of  claim 5 , wherein the body comprises a radial flange disposed adjacent the socket that transfers forces to an outer shelf disposed around an exterior of the forward end. 
     
     
         7 . The pick tool assembly of  claim 5 , wherein the forward end is press fit within the socket of the body. 
     
     
         8 . The pick tool assembly of  claim 7 , wherein the forward end is hollow to aid in the press fit. 
     
     
         9 . The pick tool assembly of  claim 7 , wherein the forward end is slotted to aid in the press fit. 
     
     
         10 . The pick tool assembly of  claim 7 , wherein the forward end is tapered to aid in the press fit. 
     
     
         11 . The pick tool assembly of  claim 5 , wherein the forward end comprises a compliant ring disposed thereon to aid in retention within the socket. 
     
     
         12 . The pick tool assembly of  claim 5 , wherein the forward end comprises a pin insert to aid in retention within the socket. 
     
     
         13 . The pick tool assembly of  claim 1 , wherein the impact tip is brazed to the body. 
     
     
         14 . The pick tool assembly of  claim 1 , wherein the shank is nonrotatably retained in the bore of the block. 
     
     
         15 . The pick tool assembly of  claim 1 , wherein the driving mechanism comprises a drum, wheel, chain, or bit. 
     
     
         16 . The pick tool assembly of  claim 1 , wherein the impact tip is disposed within a recess of the body. 
     
     
         17 . The pick tool assembly of  claim 1 , wherein the body comprises at least one detachment groove disposed adjacent the forward end. 
     
     
         18 . The pick tool assembly of  claim 1 , wherein the forward end comprises at least one detachment groove disposed adjacent the block.

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