Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hendrik Alfter0
Michael Spaeth0
Klaus Krippeit0
Juergen Thuerk0
Date of Patent
October 5, 2010
0Patent Application Number
111861080
Date Filed
July 21, 2005
0Patent Primary Examiner
Patent abstract
A device and a method for thermal pre-stressing lengthy hollow objects, in particular glass tubes, are disclosed. The device comprises a heating device, a fixture for receiving an object, and a coolant feed device comprising an outer coolant feed unit with a plurality of nozzles for feeding coolant against an outer surface of the object, and further comprising an inner coolant feed device for feeding coolant against an inner surface of the object.
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