Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 26, 2006
Patent Application Number
11224895
Date Filed
September 12, 2005
Patent Primary Examiner
Patent abstract
A plug for sealing high pressure tubes is made from a memory-shape alloy. The plug is formed having a diameter greater than the inner diameter of the tube and is shaped by cooling to its martensite finish temperature and bending its wings in opposing directions such that at a later time, it will fit within the tube. After insertion into the tube, the plug is heated to its austenite finish temperature, restoring its wings to almost their original shape, thereby exerting force onto the tube walls, sealing the tube from leakage.
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