Method and device for forming conical tube casings
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United States of America Patent
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Jan 13, 2004
Grant Date -
N/A
app pub date -
Feb 13, 2002
filing date -
Aug 13, 1999
priority date (Note) -
Expired
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Abstract
To form metal sheet blanks into taper tubes, a die is provided which has a conical cavity into which a conical punch plunges. The punch is led into the die along a curve. Taper tube shells can easily be fabricated by this method.
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