Molding processes and tool therefor
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United States of America Patent
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Aug 16, 2011
Grant Date -
Oct 16, 2008
app pub date -
Apr 11, 2008
filing date -
Apr 12, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A molding process and apparatus suitable for use in molding processes, including rapid prototyping processes and short run production processes. The molding process and apparatus entail the use of a reconfigurable screen tool having a housing defining a manifold cavity and a plurality of substantially parallel pins, each having a head protruding from the housing and a shank protruding into the housing. The heads of the pins define a screen surface through which air is able to flow, for example, through gaps between adjacent heads or through internal passages within the pins. The process further includes axially moving the pins to configure the screen surface, preventing further axial movement of the pins relative to each other, and then drawing a vacuum within the manifold cavity and creating a vacuum at the screen surface.
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