US Patent 7416374 Fast make-up fatigue resistant rotary shouldered connection
Patent 7416374 was granted and assigned to Grant Prideco on August, 2008 by the United States Patent and Trademark Office.
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Patent abstract
A thread form having improved strength and fatigue resistance. The root of the thread is cut on multiple cutting radii having displaced centers. At least two of the root surfaces are formed by cutting radii having lengths that are greater than the root truncation. The threads are used in a double start configuration to increase the connection strength and reduce makeup and breakout rotations.
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US Patent 07416374 Fast make-up fatigue resistant rotary shouldered connection US Patent 7416374 Fast make-up fatigue resistant rotary shouldered connection
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Patent Number
0741637400
Patent Number
741637400
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Is a
Current Assignee
Patent Jurisdiction
Patent Number
074163740
Date of Patent
August 26, 2008
0Patent Application Number
105436790
Date Filed
January 29, 2004
0Official Website
Patent Primary Examiner
Edits on 23 Sep, 2022
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Is a
Current Assignee
Patent Jurisdiction
Patent Number
074163740
Date of Patent
August 26, 2008
0Patent Application Number
105436790
Date Filed
January 29, 2004
0Official Website
Patent Primary Examiner
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US Patent 07416374 Fast make-up fatigue resistant rotary shouldered connection
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07416374
Date of patent
August 26, 2008
Patent application number
10543679
Date Filed
January 29, 2004
Patent primary examiner
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