Global Patent Index - EP 1238709 A2

EP 1238709 A2 2002-09-11 - Powder spray pistol for coating powder

Title (en)

Powder spray pistol for coating powder

Title (de)

Pulversprühpistole für Beschichtungspulver

Title (fr)

Pistolet de pulvérisation de poudre pour poudre de revêtement

Publication

EP 1238709 A2 (DE)

Application

EP 01128493 A

Priority

DE 10111697 A

Abstract (en)

The working tip of the pistol incorporates a high voltage electrode (32) centrally mounted in the spray nozzle (34) to apply an electrostatic charge to the stream of powder (36). The powder passes through a tube (38) held in an earthed (50) sleeve (42). There is an insulated section (76) upstream of the sleeve. A screening coil (90) surrounds the end of the hose (84) for the powder.

Abstract (de)

Hochspannungs-Pulversprühpistole für Beschichtungspulver insbesondere Metallic-Pulver. Der hintere Endabschnitt (60) eines Pulverrohres (38) und der vordere Endabschnitt (58) eines Anschlußrohres (56) sind dichtend soweit axial einander gefügt, dass sie zwischen ihren Überlappungsenden (69, 78) eine pulverdichte elektrische Isolationsstrecke (76) zur Vermeidung von elektrischen Leckströmen bilden. Eine Buchse (42) aus elektrisch leitendem Material erstreckt sich über das äußere Überlappungsende (78) der Anschlußrohr-Pulverrohr-Verbindung zum Ableiten von elektrischen Ladungen, falls solche am äußeren Überlappungsende (78) zwischen dem Anschlußrohr (56) und dem Pulverrohr (38) austreten sollten. Vorzugsweise ist ein geerdeter Abschirmmantel (90), vorzugsweise eine schraubenförmige Druckfeder, mit radialem Abstand über dem äußeren Überlappungsende (88) vorgesehen, welches zwischen dem hinteren Endabschnitt des Anschlußrohres (56) und dem vorderen Ende eines darauf aufgeschobenen Pulverschlauches (84) gebildet ist. Dies dient zur Vermeidung von elektrischen Überschlägen auf die Hand einer Bedienungsperson, falls zwischen dem Pulverschlauch (84) und dem Anschlußrohr (56) elektrische Ladungen austreten sollten. <IMAGE>

IPC 1-7 (main, further and additional classification)

B05B 5/025

IPC 8 full level (invention and additional information)

B05B 15/00 (2006.01); B05B 5/025 (2006.01); B05B 5/03 (2006.01); B05B 5/16 (2006.01)

CPC (invention and additional information)

B05B 5/032 (2013.01); B05B 5/1608 (2013.01)

Citation (applicant)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

EP 1238709 A2 20020911; EP 1238709 A3 20030618; EP 1238709 B1 20041020; AT 279989 T 20041115; CA 2373865 A1 20020909; CA 2373865 C 20070102; DE 10111697 A1 20020912; ES 2231378 T3 20050516; JP 2002263526 A 20020917; US 2002125349 A1 20020912; US 6758425 B2 20040706

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