The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 24, 2000
Filed:
Mar. 17, 1999
Applicant:
Inventors:
Assignee:
EOS GmbH Electro Optical Systems, Planegg, DE;
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B29C / ; B29C / ; B29C / ;
U.S. Cl.
CPC ...
264460 ; 118308 ; 264484 ; 264497 ; 425145 ; 4251744 ; 4251 / ; 427193 ;
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.