Punch, and rotary compression molding machine using the same
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United States of America Patent
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Sep 1, 2009
Grant Date -
Apr 24, 2008
app pub date -
Aug 24, 2005
filing date -
Aug 26, 2004
priority date (Note) -
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Abstract
This invention provides a punch comprising: a center punch and an outer punch surrounding the outer periphery of the center punch, both of which being slidable and capable of compressing; and relative position restriction means for restricting a relative position of the center and outer punches, the relative position restriction means being configured to restrict a first position in which a punch tip of the center punch is protruded from a punch tip of the outer punch and a second position in which the punch tip of the center punch is substantially coincident with the punch tip of the outer punch, and being configured to fail to restrict a third position in which the punch tip of the center punch is retracted in the punch tip of the outer punch, as well as a rotary compression molding machine provided with the double-structured punch.
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