EP 0017974 A3 19801210 - CLEANING DEVICE FOR SWIMMING-POOL
Title (en)
CLEANING DEVICE FOR SWIMMING-POOL
Publication
Application
Priority
AT 286079 A 19790417
Abstract (en)
[origin: EP0017974A2] 1. Swimming-pool cleaner for filtering the swimming-pool water and for cleaning the swimming-pool bottom with an electric-motor-driven pump which draws in swimming-pool water through a suction device (15), leads said water through a filter (10) and then pumps it back again into the swimming-pool whereby the suction device, the filter, the motor (1, 2) and the pump are combined to form a unit whose displacement is so great that in normal operation the cleaner, when immersed in the swimming-pool water, projects out of the water only with a part of the suction device so that floating dirt particles are drawn in, wherein the motor (1, 2) is in the form of an induction motor with two-phase low-voltage winding (31, 34) having two coil sets whereby the first winding (31) is supplied with low voltage by a first transformer (30) and the second winding (34) is supplied by a second transformer (32) which in turn is supplied from the mains through the intermediary of a capacitor (33).
IPC 1-7
IPC 8 full level
E04H 4/12 (2006.01)
CPC (source: EP)
E04H 4/1263 (2013.01)
Citation (search report)
- [X] DE 2258894 A1 19740606 - DICHMANN & CO KG
- US 4022690 A 19770510 - SMITH CLARENCE G
- [X] DE 2231498 A1 19730823 - STEJSKAL ALFRED E
- FR 2117155 A5 19720721 - STEJSKAL ALFRED
- DE 1958801 A1 19710527 - LOEWE PUMPENFABRIK GMBH
- US 2989185 A 19610620 - LOMBARDI OLIVER M
Designated contracting state (EPC)
CH DE FR IT
DOCDB simple family (publication)
EP 0017974 A2 19801029; EP 0017974 A3 19801210; EP 0017974 B1 19840801; AT 374548 B 19840510; AT A286079 A 19830915; DE 3068774 D1 19840906
DOCDB simple family (application)
EP 80102040 A 19800416; AT 286079 A 19790417; DE 3068774 T 19800416