Plastic article or earthenware shaping or treating: apparatus – Pattern control of travel for a forming means
Reexamination Certificate
2003-12-10
2009-06-02
Ewald, Maria Veronica D (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Pattern control of travel for a forming means
C425S174400, C264S308000, C264S401000
Reexamination Certificate
active
07540738
ABSTRACT:
The invention relates to an arrangement for the production of a three-dimensional product, which arrangement comprises a work bench on which the said three-dimensional product is to be constructed, a powder dispenser which is arranged to apply a thin layer of powder onto the work bench to create a powder bed, an irradiation gun for transmitting energy to the powder so that melting of the powder takes place, the arrangement comprising a casing within which the pressure is reduced in relation to the atmospheric pressure and within which the work bench and the irradiation gun are located, with the powder dispenser, or a supply pipe connected to the powder dispenser, being arranged partially outside the casing.
REFERENCES:
patent: 5252264 (1993-10-01), Forderhase et al.
patent: 5637175 (1997-06-01), Feygin et al.
patent: 5647931 (1997-07-01), Retallick et al.
patent: 2004/0026807 (2004-02-01), Andersson et al.
patent: WO-01/81031 (2001-11-01), None
Larsson Mikael
Larsson Morgan
Arcam AB
Birch & Stewart Kolasch & Birch, LLP
D Ewald Maria Veronica
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