US2019136634A1PendingUtilityA1

Retractable drill head

14
Individually held — no corporate assignee on recordPriority: Nov 8, 2017Filed: Aug 1, 2018Published: May 9, 2019
Est. expiryNov 8, 2037(~11.3 yrs left)· nominal 20-yr term from priority
Inventors:Adam D. Rayner
E21B 10/20E21B 7/046E21B 10/32
14
PatentIndex Score
0
Cited by
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References
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Claims

Abstract

A retractable drill head, including a shaft including a first end and a second end, a first plate connected to the first end, the first plate including at least one cutout, a first port, and a first paddle arranged adjacent to the first port, a second plate slidably arranged on the shaft, the second plate including at least one hinge, a second port, and a second paddle arranged adjacent to the second port, and at least one cutter hingedly connected to the second plate.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A retractable drill head, comprising:
 a shaft including a first end and a second end;   a first plate connected to the first end, the first plate including:
 at least one cutout; 
 a first port; and, 
 a first paddle arranged adjacent to the first port; 
   a second plate slidably arranged on the shaft, the second plate comprising:
 at least one hinge; 
 a second port; and, 
 a second paddle arranged adjacent to the second port; and, 
   at least one cutter hingedly connected to the second plate.   
     
     
         2 . The retractable drill head as recited in  claim 1 , wherein the at least one cutter comprises:
 a first end connected to the at least one hinge;   an arm; and,   a second end including a cutting head.   
     
     
         3 . The retractable drill head as recited in  claim 2 , wherein the arm is engaged with the at least one cutout. 
     
     
         4 . The retractable drill head as recited in  claim 3 , wherein the arm comprises a ramp arranged to engage the at least one cutout. 
     
     
         5 . The retractable drill head as recited in  claim 4 , wherein the cutting head extends past the first plate in a first axial direction. 
     
     
         6 . The retractable drill head as recited in  claim 5 , wherein in a retracted mode:
 the first plate is arranged at a first distance relative to the second plate; and,   the at least one cutout is:
 not engaged with the ramp; or, 
 partially engaged with the ramp. 
   
     
     
         7 . The retractable drill head as recited in  claim 6 , wherein in a fully expanded mode:
 the first plate is arranged at a second distance relative to the second plate, the second distance being greater than the first distance; and,   the at least one cutout is fully engaged with the ramp.   
     
     
         8 . The retractable drill head as recited in  claim 5 , wherein the first plate further comprises one or more cutting pockets extending in the first axial direction, the one or more cutting pockets operatively arranged to secure one or more cutters. 
     
     
         9 . A retractable drill head, comprising:
 a shaft including a first end and a second end;   a first plate connected to the first end, the first plate including:
 a first cutout; 
 a second cutout; 
 a first port; and, 
 a first paddle arranged adjacent to the first port; 
   a second plate slidably arranged on the shaft, the second plate comprising:
 a second port; and, 
 a second paddle arranged adjacent to the second port; 
   a first cutter hingedly connected to the second plate; and,   a second cutter hingedly connected to the second plate.   
     
     
         10 . The retractable drill head as recited in  claim 9 , wherein:
 the first cutter comprises a first arm connected to the second plate and a first cutting head; and,   the second cutter comprises a second arm connected to the second plate and a second cutting head.   
     
     
         11 . The retractable drill head as recited in  claim 10 , wherein the first arm is engaged with the first cutout and the second arm is engaged with the second cutout. 
     
     
         12 . The retractable drill head as recited in  claim 11 , wherein the first arm comprises a first ramp arranged to engage the first cutout and the second arm comprises a second ramp arranged to engage the second cutout. 
     
     
         13 . The retractable drill head as recited in  claim 12 , wherein the first and second cutting heads extends past the first plate in a first axial direction. 
     
     
         14 . The retractable drill head as recited in  claim 13 , wherein in a retracted mode:
 the first plate is arranged at a first distance relative to the second plate; and,   the first and second cutouts are:
 not engaged with the first and second ramps, respectively; or, 
 partially engaged with the first and second ramps, respectively. 
   
     
     
         15 . The retractable drill head as recited in  claim 14 , wherein in a fully expanded mode:
 the first plate is arranged at a second distance relative to the second plate, the second distance being greater than the first distance; and,   the first and second cutouts are fully engaged with the first and second ramps, respectively.   
     
     
         16 . The retractable drill head as recited in  claim 13 , wherein the first plate further comprises one or more cutting pockets extending in the first axial direction, the one or more cutting pockets operatively arranged to secure one or more cutters. 
     
     
         17 . A retractable drill head, comprising:
 a shaft including a first end and a second end;   a first plate connected to the first end, the first plate including at least one cutout;   a second plate slidably arranged on the shaft; and,   at least one cutter hingedly connected to the second plate.   
     
     
         18 . The retractable drill head as recited in  claim 17 , wherein the at least one cutter comprises:
 an arm engaged with the at least one cutout; and,   a cutting head extending past the first plate in a first axial direction.   
     
     
         19 . The retractable drill head as recited in  claim 18 , wherein the arm comprises a ramp arranged to engage the first cutout and force the cutting head radially outward. 
     
     
         20 . The retractable drill head as recited in  claim 19 , wherein:
 in a retracted mode the at least one cutout is:
 not engaged with the ramp; or, 
 partially engaged with the ramp; and, 
   in a fully expanded mode the at least one cutout is fully engaged with the ramp.

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