EP 0028067 A1 19810506 - Washing machine having drain blockage indicator.
Title (en)
Washing machine having drain blockage indicator.
Title (de)
Waschmaschine mit Verstopfungsanzeige für den Abfluss.
Title (fr)
Machine à laver avec indicateur d'engorgement de drainage.
Publication
Application
Priority
GB 7931600 A 19790912
Abstract (en)
A washing machine is provided with means to detect when a drain filter (7) connected to the outlet of the washing chamber (2) is blocked. A low-level water sensor (12) used during normal operation of the machine for normal control of the machine is monitored during a drainage operation and the controller (10) is arranged to establish whether the water sensor (12) has operated a predetermined time after the drain pump (6) is started. If the switch (12) does not change state, then it is assumed that the filter is blocked and, either immediately or at the end of the wash programme, a warning light (20) is illuminated.
IPC 1-7
IPC 8 full level
D06F 39/08 (2006.01); D06F 39/10 (2006.01)
CPC (source: EP US)
D06F 33/47 (2020.02 - EP US); D06F 39/082 (2013.01 - EP US); D06F 39/087 (2013.01 - EP US); D06F 39/10 (2013.01 - EP US); D06F 2103/18 (2020.02 - EP US); D06F 2105/58 (2020.02 - EP US)
Citation (search report)
- US 3545481 A 19701208 - FRATALIA ANGELO R
- DE 2818286 A1 19791031 - BAUKNECHT GMBH G
- DE 6811374 U 19690811 - SIEMENS ELEKTROGERAETE GMBH [DE]
- DE 2631344 A1 19780119 - PHILIPS PATENTVERWALTUNG
Designated contracting state (EPC)
AT BE CH DE FR IT LI LU NL SE
DOCDB simple family (publication)
EP 0028067 A1 19810506; AU 6218080 A 19810326; DK 386580 A 19810313; ES 494959 A0 19810601; ES 8105807 A1 19810601; FI 802852 A 19810313; JP S5695098 A 19810801; NO 802707 L 19810313
DOCDB simple family (application)
EP 80303186 A 19800910; AU 6218080 A 19800910; DK 386580 A 19800911; ES 494959 A 19800911; FI 802852 A 19800911; JP 12661480 A 19800911; NO 802707 A 19800911