US Patent 7658242 Hole coring system with lever arm
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Patent abstract
A hole coring system for drilling large diameter holes with a handheld tool. The drill bit is guided by a mandrel attached to the concrete and serves as a central guidepost that ensures precise centering of the drill bit. Commonly available tools may be used to rotate the drill bit. A lever arm may be attached to the tool and used to resist any torquing action. Additionally, a brace may be attached to the lever arm which may be used to resist any torquing action.
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US Patent 07658242 Hole coring system with lever arm US Patent 7658242 Hole coring system with lever arm
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Patent Number
0765824200
Patent Number
765824200
Edits on 22 May, 2023
Golden AI
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Official Website
Edits on 30 Mar, 2023
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Is a
Patent Jurisdiction
Patent Number
076582420
Date of Patent
February 9, 2010
0Patent Application Number
120091690
Date Filed
January 17, 2008
0Official Website
Patent Primary Examiner
Edits on 26 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
076582420
Date of Patent
February 9, 2010
0Patent Application Number
120091690
Date Filed
January 17, 2008
0Official Website
Patent Primary Examiner
Edits on 18 Jun, 2022
Golden AI
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US Patent 07658242 Hole coring system with lever arm
Infobox
Is a
Patent jurisdiction
Patent number
07658242
Date of patent
February 9, 2010
Patent application number
12009169
Date Filed
January 17, 2008
Patent primary examiner
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