EP 0908121 A1 19990414 - Vacuum cleaner with directly generated electrostatic effect
Title (en)
Vacuum cleaner with directly generated electrostatic effect
Title (de)
Staubsauger mit direkt erzeugtem elektrostatischen Effekt
Title (fr)
Aspirateur de poussières à effet électrostatique généré directement
Publication
Application
Priority
EP 97830396 A 19970728
Abstract (en)
A vacuum cleaner with an electrostatic effect, in which a suction motor unit (13) drives a frictional electrostatic generator formed by two circular rings (17, 18) of two different electrostatically chargeable materials moving relative to one another and the electrical charges of opposite sign generated are applied, respectively, to a dust container (4) and to a field plate (9, 22) housed in the container (4) and insulated therefrom, so that the electric field generated inside the container attracts and retains against the field plate and the internal wall of the container the dust particles transported by an air-flow admitted to the container. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
A47L 9/1409 (2013.01); A47L 9/2889 (2013.01)
Citation (search report)
- [A] US 5400465 A 19950328 - BOSSES MARK D [US], et al
- [A] DE 3143489 A1 19830511 - VOLKRODT WOLFGANG
- [A] US 4186030 A 19800129 - ARMSTRONG JOHN L [US]
- [DA] EP 0578365 A1 19940112 - SCOTT & FETZER CO [US]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0908121 A1 19990414; EP 0908121 B1 20021016; DE 69716427 D1 20021121; DE 69716427 T2 20030306
DOCDB simple family (application)
EP 97830396 A 19970728; DE 69716427 T 19970728