EP 0092419 A2 19831026 - Coating apparatus.
Title (en)
Coating apparatus.
Title (de)
Beschichtungsvorrichtung.
Title (fr)
Dispositif de revêtement.
Publication
Application
Priority
GB 8211387 A 19820420
Abstract (en)
Electrostatic or electrogasdynamic coating apparatus includes a coating gun, e.g. for use with dry powder, whose structure defines a through passage leading from an inlet tube (10) operatively connected to a source of particulate coating material to a discharge barrel (12). A central needle cathode electrode (15) is mounted in a constricted region of the passage, its tip being adjacent an annular porous metal anode electrode (25) whose central opening defines part of the passage. A flow of the material is induced along the passage by a first pressurized gas (e.g. air) stream fed from a first supply formation (24) to enter the passage in the region of the electrodes, in which region the particles receive an electric charge from the latter. At the same time a second pressurized gas steam, which is controlled independently of the first stream, is fed from a second supply formation (24) through the porous electrode itself to prevent build-up of particles on the acting portion thereof.
IPC 1-7
IPC 8 full level
B05B 5/03 (2006.01)
CPC (source: EP)
B05B 5/032 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR IT LI LU NL SE
DOCDB simple family (publication)
EP 0092419 A2 19831026; EP 0092419 A3 19840425; GB 2118865 A 19831109; GB 2118865 B 19850925
DOCDB simple family (application)
EP 83302193 A 19830419; GB 8211387 A 19820420