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:
Apr. 24, 2001
Filed:
Aug. 09, 1999
Applicant:
Inventors:
Gunter Börner, Mühlhausen, DE;
Johann Christoph Nienburg, Heidelberg, DE;
Jörg Sopka, Schwetzingen, DE;
Josef Wittmann, Hockenheim, DE;
Assignee:
ABB Research Ltd., Zurich, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05B 5/00 ; F23D 1/132 ;
U.S. Cl.
CPC ...
B05B 5/00 ; F23D 1/132 ;
Abstract
A powder-spraying apparatus having simultaneous internal and external charging, which is suitable for electrostatic powder coating. In order to achieve improved constancy of the deposition efficiency, largely independent of the distance between the powder-spraying apparatus and the work piece, it is proposed to connect both internal high-voltage electrodes and external high-voltage electrodes to a high-voltage source via high-resistance components.