David Michel Harrington

Person

Dallas, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Modified surface properties of percussion tools used in downhole dr...
- Patent number 10,590,525
- Issue date Mar 17, 2020
- Varel International Ind., L.P.
- Anthony Stuart Plana
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method for drilling out a plug using a hybrid rotary cone drill bit
- Patent number 10,538,970
- Issue date Jan 21, 2020
- Varel International Ind., L.P.
- Kyle Nobile
- E21 - EARTH DRILLING MINING
Information Patent Grant
Modified surface properties of percussion tools used in downhole dr...
- Patent number 9,951,409
- Issue date Apr 24, 2018
- Varel International Ind., L.P.
- Anthony Stuart Plana
- C21 - METALLURGY OF IRON
Information Patent Grant
Wear resistant plates on a leading transitional surface of the leg...
- Patent number 9,488,007
- Issue date Nov 8, 2016
- Varel International Ind., L.P.
- David Michel Harrington
- E21 - EARTH DRILLING MINING
Information Patent Grant
Double wall flow tube for percussion tool
- Patent number 9,415,496
- Issue date Aug 16, 2016
- Varel International Ind., L.P.
- David Harrington
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Top mounted choke for percussion tool
- Patent number 9,404,342
- Issue date Aug 2, 2016
- Varel International Ind., L.P.
- David Harrington
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Hybrid rotary cone drill bit
- Patent number 9,376,866
- Issue date Jun 28, 2016
- Varel International Ind., L.P.
- Kyle Nobile
- E21 - EARTH DRILLING MINING
Information Patent Grant
Coating of the piston for a rotating percussion system in downhole...
- Patent number 9,328,558
- Issue date May 3, 2016
- Varel International Ind., L.P.
- David Harrington
- E21 - EARTH DRILLING MINING
Information Patent Grant
Roller cone drill bit with cuttings evacuator
- Patent number 9,260,922
- Issue date Feb 16, 2016
- Varel International, Ind., L.P.
- Amnach Kongamnach
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for reducing lubricant pressure pulsation with...
- Patent number 8,746,374
- Issue date Jun 10, 2014
- Varel International Ind., L.P.
- David Harrington
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for reducing lubricant pressure pulsation with...
- Patent number 8,534,389
- Issue date Sep 17, 2013
- Varel International, Ind., L.P.
- Thomas Gallifet
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rock bit having a seal gland with a conical sealing surface
- Patent number 8,403,079
- Issue date Mar 26, 2013
- Varel International, Ind., L.P.
- Thomas Gallifet
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rock bit having a seal gland with a conical sealing surface
- Patent number 8,393,418
- Issue date Mar 12, 2013
- Varel International, Ind., L.P.
- Thomas Gallifet
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rock bit having a seal gland with a conical sealing surface
- Patent number 7,721,827
- Issue date May 25, 2010
- Varel International Ind., L.P.
- Thomas Gallifet
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
HYBRID ROTARY CONE DRILL BIT
- Publication number 20190063161
- Publication date Feb 28, 2019
- VAREL INTERNATIONAL IND., L.P.
- KYLE NOBILE
- E21 - EARTH DRILLING MINING
Information Patent Application
MODIFIED SURFACE PROPERTIES OF PERCUSSION TOOLS USED IN DOWNHOLE DR...
- Publication number 20180202033
- Publication date Jul 19, 2018
- Varel International Ind, L.P
- Anthony Stuart Plana
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
MODIFIED SURFACE PROPERTIES OF PERCUSSION TOOLS USED IN DOWNHOLE DR...
- Publication number 20170088932
- Publication date Mar 30, 2017
- VAREL INTERNATIONAL IND., L.P.
- Anthony Stuart Plana
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
METHOD FOR DRILLING OUT A PLUG USING A HYBRID ROTARY CONE DRILL BIT
- Publication number 20160153241
- Publication date Jun 2, 2016
- VAREL INTERNATIONAL IND., L.P.
- Kyle Nobile
- E21 - EARTH DRILLING MINING
Information Patent Application
COMPOSITE DIAPHRAGM FOR ROLLER CONE PRESSURE COMPENSATION SYSTEM
- Publication number 20160076307
- Publication date Mar 17, 2016
- VAREL INTERNATIONAL IND., L.P.
- David Michel Harrington
- E21 - EARTH DRILLING MINING
Information Patent Application
INDUSTRIAL TOOLS WITH THERMOSET COATING
- Publication number 20150299514
- Publication date Oct 22, 2015
- VAREL INTERNATIONAL IND., L.P.
- Cheng-Wei Chiu
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
DRILL BIT FOR HORIZONTAL DIRECTIONAL DRILLING
- Publication number 20150226007
- Publication date Aug 13, 2015
- VAREL INTERNATIONAL IND., L.P.
- David Michel Harrington
- E21 - EARTH DRILLING MINING
Information Patent Application
Coating Of The Piston For A Rotating Percussion System In Downhole...
- Publication number 20150129308
- Publication date May 14, 2015
- VAREL INTERNATIONAL IND., L.P.
- David Harrington
- E21 - EARTH DRILLING MINING
Information Patent Application
Top Mounted Choke For Percussion Tool
- Publication number 20150129316
- Publication date May 14, 2015
- VAREL INTERNATIONAL IND., L.P.
- David Harrington
- E21 - EARTH DRILLING MINING
Information Patent Application
Double Wall Flow Tube For Percussion Tool
- Publication number 20150129315
- Publication date May 14, 2015
- VAREL INTERNATIONAL IND., L.P.
- David Harrington
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
HYBRID ROTARY CONE DRILL BIT
- Publication number 20150053422
- Publication date Feb 26, 2015
- VAREL INTERNATIONAL IND., L.P.
- Kyle Nobile
- E21 - EARTH DRILLING MINING
Information Patent Application
WEAR RESISTANT PLATES ON A LEADING TRANSITIONAL SURFACE OF THE LEG...
- Publication number 20140299384
- Publication date Oct 9, 2014
- VAREL INTERNATIONAL IND., L.P.
- David Michel Harrington
- E21 - EARTH DRILLING MINING
Information Patent Application
ROLLER CONE DRILL BIT WITH CUTTINGS EVACUATOR
- Publication number 20130256038
- Publication date Oct 3, 2013
- Varel International, Ind., L.P.
- Amnach Kongamnach
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND APPARATUS FOR REDUCING LUBRICANT PRESSURE PULSATION WITH...
- Publication number 20120193150
- Publication date Aug 2, 2012
- Varel International, Ind., L.P.
- Thomas Gallifet
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND APPARATUS FOR REDUCING LUBRICANT PRESSURE PULSATION WITH...
- Publication number 20120193151
- Publication date Aug 2, 2012
- Varel International, Ind., L.P.
- David Harrington
- E21 - EARTH DRILLING MINING
Information Patent Application
ROCK BIT HAVING A SEAL GLAND WITH A CONICAL SEALING SURFACE
- Publication number 20100194057
- Publication date Aug 5, 2010
- Varel International, Ind., L.P.
- Thomas Gallifet
- E21 - EARTH DRILLING MINING
Information Patent Application
ROCK BIT HAVING A SEAL GLAND WITH A CONICAL SEALING SURFACE
- Publication number 20100193251
- Publication date Aug 5, 2010
- Varel International, Ind., L.P.
- Thomas Gallifet
- E21 - EARTH DRILLING MINING
Information Patent Application
ROCK BIT HAVING A SEAL GLAND WITH A CONICAL SEALING SURFACE
- Publication number 20090045585
- Publication date Feb 19, 2009
- Varel International
- Thomas Gallifet
- E21 - EARTH DRILLING MINING

David Michel Harrington

Person

Patents Grantslast 30 patents

Modified surface properties of percussion tools used in downhole dr...

Method for drilling out a plug using a hybrid rotary cone drill bit

Modified surface properties of percussion tools used in downhole dr...

Wear resistant plates on a leading transitional surface of the leg...

Double wall flow tube for percussion tool

Top mounted choke for percussion tool

Hybrid rotary cone drill bit

Coating of the piston for a rotating percussion system in downhole...

Roller cone drill bit with cuttings evacuator

Method and apparatus for reducing lubricant pressure pulsation with...

Method and apparatus for reducing lubricant pressure pulsation with...

Rock bit having a seal gland with a conical sealing surface

Rock bit having a seal gland with a conical sealing surface

Rock bit having a seal gland with a conical sealing surface

Patents Applicationslast 30 patents

HYBRID ROTARY CONE DRILL BIT

MODIFIED SURFACE PROPERTIES OF PERCUSSION TOOLS USED IN DOWNHOLE DR...

MODIFIED SURFACE PROPERTIES OF PERCUSSION TOOLS USED IN DOWNHOLE DR...

METHOD FOR DRILLING OUT A PLUG USING A HYBRID ROTARY CONE DRILL BIT

COMPOSITE DIAPHRAGM FOR ROLLER CONE PRESSURE COMPENSATION SYSTEM

INDUSTRIAL TOOLS WITH THERMOSET COATING

DRILL BIT FOR HORIZONTAL DIRECTIONAL DRILLING

Coating Of The Piston For A Rotating Percussion System In Downhole...

Top Mounted Choke For Percussion Tool

Double Wall Flow Tube For Percussion Tool

HYBRID ROTARY CONE DRILL BIT

WEAR RESISTANT PLATES ON A LEADING TRANSITIONAL SURFACE OF THE LEG...

ROLLER CONE DRILL BIT WITH CUTTINGS EVACUATOR

METHOD AND APPARATUS FOR REDUCING LUBRICANT PRESSURE PULSATION WITH...

METHOD AND APPARATUS FOR REDUCING LUBRICANT PRESSURE PULSATION WITH...

ROCK BIT HAVING A SEAL GLAND WITH A CONICAL SEALING SURFACE

ROCK BIT HAVING A SEAL GLAND WITH A CONICAL SEALING SURFACE

ROCK BIT HAVING A SEAL GLAND WITH A CONICAL SEALING SURFACE