US Patent 7380840 Expandable threaded connection

Patent 7380840 was granted and assigned to Hydril on June, 2008 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Hydril

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

73808400

Patent Inventor Names

Robert S. Sivley, IV0

Harris A. Reynolds, Jr.0

Date of Patent

June 3, 2008

Patent Application Number

109739370

Date Filed

October 26, 2004

Patent Primary Examiner

‌

James M. Hewitt

Patent abstract

Tubular connections and methods of designing tubular connections having selected root/crest clearance when the box member and pin member are made-up. When the tubular connection is radially expanded, a thread seal is formed over at least part of the tubular connection.