CONTOURED AIR VENT HOLES FOR DIES
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United States of America Patent
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Issued Date -
Aug 15, 2013
app pub date -
Feb 13, 2012
filing date -
Feb 13, 2012
priority date (Note) -
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Abstract
The present disclosure describes a die for forming sheet metal. The die includes a die body, an outer surface, and a sheet metal facing surface. At least one passage extends through the die body to form an escape route, purging an amount of air trapped in-between the die and a sheet metal during a sheet metal operation. The passage includes an entry port, an exit port, and a bore that connects the entry port to the exit port. Each port has a transition area between its respective surface and the bore. The transition area is configured to be other than a right angle.
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