EP 0683639 B1 20000531 - ULTRA QUIET VACUUM CLEANER
Title (en)
ULTRA QUIET VACUUM CLEANER
Title (de)
ULTRA-LÄRMARMER STAUBSAUGER
Title (fr)
ASPIRATEUR ULTRA SILENCIEUX
Publication
Application
Priority
- US 9401190 W 19940208
- US 1510093 A 19930209
Abstract (en)
[origin: WO9417719A1] An ultra-quiet vacuum cleaner system having an active noise controller (26) adapted to measure with microphones (28), (29) the noise generated by the system and to provide via a speaker (27) an equal counter-noise to thereby attenuate the generated noise. The system also includes designing the coupling (22) between the bag cavity (20) and the motor chamber (23) and the motor chamber (23) itself as structures for reducing noise.
IPC 1-7
IPC 8 full level
A47L 9/00 (2006.01)
CPC (source: EP)
A47L 9/0081 (2013.01)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 9417719 A1 19940818; DE 69424772 D1 20000706; DE 69424772 T2 20001116; EP 0683639 A1 19951129; EP 0683639 A4 19960327; EP 0683639 B1 20000531; JP 2887354 B2 19990426; JP H08502916 A 19960402
DOCDB simple family (application)
US 9401190 W 19940208; DE 69424772 T 19940208; EP 94907955 A 19940208; JP 51818994 A 19940208