Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Reexamination Certificate
2011-01-18
2011-01-18
Parker, Frederick J (Department: 1715)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
C425S174400, C425S375000, C427S189000
Reexamination Certificate
active
07871551
ABSTRACT:
Systems, apparatus, and methods feed and distribute a powder over a working area used for producing three-dimensional objects. A powder storage unit contains a supply of powder, and a distribution member is arranged to be moveable across the working area to distribute a portion of powder onto the working area. In an embodiment, the distribution member is, in a first step, moveable a predetermined distance into a supply of powder placed in the powder storage unit, said distance being sufficiently long to bring about a transfer of a portion of powder from the powder supply at one side of the distribution member to another side of the distribution member facing the working area, and the distribution member is, in a second step, moveable towards and across the working area to distribute the portion of powder onto the working area. Other embodiments are disclosed.
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Ackelid Ulf
Svensson Mattias
Wallgren Göran
Arcam AB
Parker Frederick J
Schwegman Lundberg & Woessner, P.A.
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