Improvements in automatic pool cleaners

(19)

(11)

EP 0 721 033 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	16.10.1996 Bulletin 1996/42

(43)	Date of publication A2:
	10.07.1996 Bulletin 1996/28

(21)	Application number: 96105686.8

(22)	Date of filing: 19.11.1992

(51)	International Patent Classification (IPC)⁶: E04H 4/16

(84)	Designated Contracting States:
	DE ES FR GB PT

(30)

Priority:

20.11.1991 AU 88025/91

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	92119752.1 / 0543387

(71)	Applicant: KREEPY KRAULY (PROPRIETARY) LIMITED
	Nuffield Springs, Transvaal (ZA)

(72)	Inventor:
	The designation of the inventor has not yet been filed ()

(74)	Representative: Micheli & Cie
	Rue de Genève 122, Case Postale 61 1226 Genève-Thonex 1226 Genève-Thonex (CH)


	Remarks:
	This application was filed on 11.04.1996 as a divisional application to the application mentioned under INID code 62.

(54)	Improvements in automatic pool cleaners

(57) Apparatus for cleaning a surface submerged in a liquid is disclosed and claimed. The apparatus comprises a body (12) defining a flow passage (28,32,16,18 and 20) therethrough. The flow passage (28,32,16,18 and 20) extends between a main inlet (26) to the body (12) defined in a peripheral region (22) of the body (12) and an outlet (41) from the body (12). The peripheral region (22), in use, being releasably engageable with a surface to be cleaned and the outlet (41) being connectable to a suction source. A pivotal valve (34) is located in the body (12) for intermittently varying the flow of liquid through the body. The apparatus is characterised in that asymmetry is provided between members of pairs of corresponding parts of the apparatus, such as ports (36 and 38) or tubes (16 and 18).

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