Method and apparatus for producing a three-dimensional object

Details Method and apparatus for producing a three-dimensional object Method and apparatus for producing a three-dimensional object

1996-04-18

1998-03-24

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Using laser sintering of particulate material to build...

21912173, 21912185, 264113, 264308, 419 38, 419 44, 425 78, 425135, 4251744, B29C 3508, B29C 4102

Patent

active

057309256

ABSTRACT:
In an apparatus for producing a three-dimensional object by laser sintering the object is produced by successive solidification of layers of a powder material at points corresponding to a cross-section of said object using radiation for solidifying said powder material. The apparatus includes a support having a substantially plane upper side for supporting the object, a material applying device for applying a layer of the material onto the upper side or onto another layer formed on the upper side, and a solidification device for solidifying a layer of the material by irradiation. The material applying device has a coating device and a drive for displacing the coating device in a direction parallel to the upper side of the support. The coating device has a first side face, a second side face, a base surface parallel to the upper side and facing the same, a first edge portion between the first side face and the base surface, the first edge portion including a first angle of inclination with the base surface, and a second edge portion between the second side face and the base surface, the second edge portion including a second angle of inclination with the base surface, the second angle of inclination being smaller than the first angle of inclination.

REFERENCES:
patent: 4938816 (1990-07-01), Beaman et al.
patent: 5238614 (1993-08-01), Uchinono et al.

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