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2015
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Invention
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Air/water separator for drill bits, drill bit and drilling assembly comprising such a separator a... |
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2012
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Invention
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Rotary drill bit. An air-cooled earth-boring drill bit including a plurality of lugs. Each lug in... |
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Invention
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Reverse circulation bit assembly. A drill bit assembly for boring including a drill bit and a bit... |
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2011
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Invention
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Method and system for drilling using gas as a drilling fluid.
A system and method of drilling. T... |
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Invention
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Method for assembling a down hole drill.
A method for assembling a down hole drill comprises the... |
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Invention
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Cutter assembly for a raise boring reamer. A raise boring reamer assembly includes a saddle, and ... |
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2010
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Invention
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Drive pin support. A chuck assembly, an assembly for an earth-boring drill assembly, and a method... |
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Invention
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Downhole tool. A downhole tool (100) includes a cutter (112a) rotatably mounted to a journal (113... |
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Invention
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Downhole tool.
A downhole tool includes a cutter rotatably mounted to a journal. The journal is ... |
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Invention
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A down hole drill assembly and a method of operating a down hole drill assembly. A down hole dril... |
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Invention
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Chuck assembly for a down-hole drill. A chuck assembly, an assembly for an earth-boring dri... |
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Invention
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Foot valve assembly for a down hole drill. A retaining assembly for a cylindrical member and supp... |
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Invention
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Down hole hammer having elevated exhaust. A percussive assisted rotary drill includes a top sub f... |
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2009
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Invention
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Earth boring cutter employing helical teeth. An earth bit includes an earth bit body (151) and a ... |
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Invention
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Earth boring cutter employing helical teeth. An earth bit includes an earth bit body (151)... |
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Invention
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Percussion assisted rotary earth bit and method of operating the same. A method of boring through... |
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Invention
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Seal assembly for a rotary earth bit. An earth bit includes a cutting cone carried by a lug, and ... |
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Invention
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Bit retainer assembly for a down-hole drill.
A retainer device for a drill bit, an earth-boring ... |
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Invention
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Fluid distributor cylinder for percussive drills. A fluid distributor cylinder is for a percussiv... |
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Invention
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Earth bit with hub and thrust units. An earth bit includes a cone rotatably mounted to a shaft wi... |
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2008
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Invention
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Seal assembly for a rotary earth bit. An earth bit includes a cutting cone rotatably mounted to a... |
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Invention
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Seal assembly for a rotary earth bit.
An earth bit includes a cutting cone rotatably mounted to ... |
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Invention
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Earthboring tool and method of casehardening. A method of casehardening an earthboring tool compo... |
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Invention
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Chuck and bit assembly for reverse circulation drill. A reverse-circulation drill for forming a h... |
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Invention
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Earth boring cutter employing helical teeth.
An earth bit includes an earth bit body and a lug a... |
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2007
|
Invention
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Magnetic earth bit seal. An earth bit seal includes a magnetic ring that determines how strongly ... |
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Invention
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Earthboring tool and method of casehardening.
A method of casehardening an earthboring tool comp... |
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Invention
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Seal for an earth bit.
An earth bit includes a cutting cone rotatably mounted to a lug with a hu... |
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Invention
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Earth bit having a screen.
An earth bit includes an earth bit body having a bore with a bearing ... |
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Invention
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Earth bit having a wear ring. An earth bit includes a cutting cone rotatably mounted to a lug wit... |
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Invention
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Earth bit having a retaining ring.
An earth bit includes an earth bit body which carries a lug. ... |
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Invention
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Device for channeling solids and fluids within a reverse circulation drill. A device is for chann... |
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2004
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Invention
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Percussive drill with adjustable flow control. A fluid channeling device is for a percussiv... |
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2002
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Invention
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Fluid distributor device for down-hole drills. A fluid distributor device is for a percussi... |
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1999
|
Invention
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Venting and sealing system for down-hole drills. A sealing and venting system including an improv... |
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1997
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Invention
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A bit retention device for a bit and chuck assembly of a down-the-hole percussive drill. A bit re... |
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1996
|
Invention
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Water separator for a down hole drill. A device for use within the backhead of a down hole... |
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Invention
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Self-lubricating, fluid-actuated, percussive down-the-hole drill. A piston for a fluid-actuated, ... |
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Invention
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Bit retention device for a bit and chuck assembly of a down-the-hole, percussive drill. A bit ret... |
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|
Invention
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Bit retention device for a bit and chuck assembly of a down-the-hole percussive drill. A bit rete... |
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|
Invention
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Drive pin for a bit and chuck combination in a percussion drilling machine |
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Invention
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Indexing percussive drilling bit. A chuck and drill bit combination for insertion into a front en... |
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1995
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Invention
|
Water separator for a down hole drill. A device for use within the backhead of a down hole percus... |
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Invention
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Piston for a self-lubricating, fluid-actuated, percussive down-the-hole drill. A piston for a flu... |
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Invention
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Reversible casing for a self-lubricating, fluid-actuated, percussive down-the-hole drill. A rever... |
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Invention
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Self-lubricating, fluid-actuated, percussive down-the-hole drill. A fluid-actuated, percussive, d... |
