EP 0214212 B1 19890927 - METHOD AND DEVICE FOR THE DISPERSION OF ULTRA-FINE POWDERS
Title (en)
METHOD AND DEVICE FOR THE DISPERSION OF ULTRA-FINE POWDERS
Publication
Application
Priority
FR 8503196 A 19850305
Abstract (en)
[origin: WO8605126A1] Method and device for setting ultrafine powders in suspension, particularly with a view to the dispersion thereof in the atmosphere. According to the method of the invention, a gas is passed in a space delimited by the free surface of the powder (9) in order to erode said surface, and the shape and dimensions of said space are maintained approximately constant by means of a piston (4) which is displaced under the action of a gas maintained permanently under pressure. The method is applicable to the dispersion of previously compacted powders in the form of blocks.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
B05B 7/1422 (2013.01 - EP US); F41H 9/06 (2013.01 - EP US)
Citation (examination)
- US 4023778 A 19770517 - JOLY MICHEL, et al
- CA 874283 A 19710629 - US GOV SEC ARMY
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8605126 A1 19860912; DE 3665822 D1 19891102; EP 0214212 A1 19870318; EP 0214212 B1 19890927; FR 2578451 A1 19860912; FR 2578451 B1 19880826; US 4859121 A 19890822
DOCDB simple family (application)
FR 8600067 W 19860303; DE 3665822 T 19860303; EP 86901422 A 19860303; FR 8503196 A 19850305; US 25619188 A 19881011