Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Including shaping means comprising fluid pressure contacting...
Reexamination Certificate
2011-08-16
2011-08-16
Lee, Edmund H. (Department: 1744)
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Including shaping means comprising fluid pressure contacting...
C425S387100, C264S553000, C264S554000
Reexamination Certificate
active
07997891
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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Cipra Raymond J.
Gallagher Jeffery M.
Siegmund Thomas H.
Hartman Domenica N. S.
Hartman Gary M.
Hartman & Hartman P.C.
Lee Edmund H.
Purdue Research Foundation
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