Static molds – Core – Including means for attaching core to a support
Patent
1993-02-25
1994-09-27
Aftergut, Karen
Static molds
Core
Including means for attaching core to a support
249184, 425392, 425393, 425403, B28B 728, B28B 2186
Patent
active
053501390
ABSTRACT:
A mandrel for making a rigid tubular article that has integrally-formed straight and arcuate portions. The mandrel has a plurality of shape-providing elements slidably disposed on interconnected straight and arcuate rods. After a rigid tubular article has been formed about the mandrel, the shape-providing elements can be slid off the straight and arcuate rods so that the mandrel can be removed from the rigid tubular article's interior. This provides for easy separation of the mandrel from the tubular article.
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Aftergut Karen
Griswold Gary L.
Hanson Karl G.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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