EP 0373353 B1 19930317 - DEVICE FOR REGULATING AND/OR DISPLAYING THE OPERATION OF SUCTION CLEANERS
Title (en)
DEVICE FOR REGULATING AND/OR DISPLAYING THE OPERATION OF SUCTION CLEANERS
Publication
Application
Priority
- DE 3842320 A 19881216
- DE 3914306 A 19890429
Abstract (en)
[origin: EP0373353A1] In a device for regulating the operation of a suction cleaner and for indicating the dust bag filling level, a pipe blockage, air leaks and the like, it is proposed to arrange, in the outgoing airstream produced by a suction cleaner blower, behind the blower and behind the dust bag (13), an air turbine (19) whose rotational speed is determined in a contact-free manner and converted into an electrical display signal and supplied to a regulating circuit for controlling the blower motor (15). Depending upon the determined quantity of outgoing air, the respective operating state of the suction cleaner or the dust-bag filling level can thus furthermore be determined, changing signals displayed and also finely graduated percentage data and written information visually presented to the user. A combination with pressure values determined by diaphragm switches makes possible finally a reliable discrimination of the operating states to be displayed. <IMAGE>
IPC 1-7
IPC 8 full level
A47L 9/28 (2006.01)
CPC (source: EP KR US)
A47L 9/28 (2013.01 - KR); A47L 9/2821 (2013.01 - EP US); A47L 9/2842 (2013.01 - EP US); A47L 9/2857 (2013.01 - EP US); A47L 9/2894 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0373353 A1 19900620; EP 0373353 B1 19930317; DE 3914306 A1 19900628; DE 3914306 C2 19910808; DE 58903811 D1 19930422; ES 2040437 T3 19931016; JP H02213316 A 19900824; KR 900009017 A 19900702; KR 940009653 B1 19941015; US 5033151 A 19910723
DOCDB simple family (application)
EP 89120569 A 19891107; DE 3914306 A 19890429; DE 58903811 T 19891107; ES 89120569 T 19891107; JP 32410989 A 19891215; KR 890018540 A 19891214; US 43743289 A 19891115