Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 29, 2008
Patent Application Number
11038842
Date Filed
January 19, 2005
Patent Primary Examiner
Patent abstract
A explosive device is disclosed for collapsing an expansion-fit metal tube from within a hole of a metal plate of a boiler or the like. The device includes a connecting rod inserted into the tube and extending outwardly from top and bottom ends of the tube. The portion of the connecting rod extending out of the top end of the tube is encapsulated by a blast chamber containing an explosive charge. The portion of the connecting rod extending out of the bottom end of the tube is secured via a retaining plate held by a washer and nut threaded to the connecting rod.
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