US Patent 7628212 Drill stem connection and method
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Patent Inventor Names
Michael Tjader0
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Patent abstract
A drill stem connection system and method is shown that provides a secure hold on drill stem surfaces while unscrewing a threaded connection. Two lever arm components are adjustable to a number of possible orientations to allow for fitting the drill stem wrench in tight spaces. Concentric rotation of lever arm components facilitates connection of the lever arm components together. Configurations and methods shown provide a stable and powerful tool to loosen threaded drill stem effectively.
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US Patent 07628212 Drill stem connection and method US Patent 7628212 Drill stem connection and method
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Patent Number
076282120
Patent Number
76282120
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Patent Jurisdiction
Patent Number
076282120
Date of Patent
December 8, 2009
0Patent Application Number
119253530
Date Filed
October 26, 2007
0Official Website
Patent Primary Examiner
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US Patent 07628212 Drill stem connection and method
Infobox
Is a
Patent jurisdiction
Patent number
07628212
Date of patent
December 8, 2009
Patent application number
11925353
Date Filed
October 26, 2007
Patent primary examiner
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