Patent · US Expired

Apparatus and method for producing a three-dimensional object and for applying a layer of a powder material to a surface

US6136257A · kind A · utility

71Cited by

4References

15Claims

0Family size

Assignee

EOS GmbH Electro Optical Systems · DE

Inventors

Bernhard Graf · Plochingen, DE
Thomas Mattes · Germering, DE
Lutz Reichmann · Jena, DE

Key dates

Filing date	Mar 17, 1999
Grant date	Oct 24, 2000
Priority date	—
Expiry date	Mar 17, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/25
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An apparatus is described for producing a three-dimensional object from a powder material which includes powder particles and which is solidifiable by exposure to electromagnetic radiation. The apparatus includes a support having a substantially plane support surface for supporting said object, an applying device for applying a layer of the powder material to the support surface, a radiation device for selectively exposing the powder material to electromagnetic radiation at places corresponding to the object and a discharge electrode for generating an electric field for reducing charge differences on the powder particles.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.