Die with controlled breather for rotational pressing
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United States of America Patent
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Mar 16, 2010
Grant Date -
Jul 19, 2007
app pub date -
Jan 16, 2007
filing date -
Jan 16, 2006
priority date (Note) -
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Abstract
A die for rotational pressing includes a breather device for connection of the interior of the die with the exterior and which has a passage between the interior and the exterior of the die equipped with a valve operated by an actuator piloted by a handling controller for opening the passage after a first step of the pressing process. The valve allows the breather of the internal pressure of the die and/or controlled injection of air under pressure into the die.
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