Sinking pump safe for fish

(19)

(11)

EP 2 169 234 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	28.11.2012 Bulletin 2012/48

(43)	Date of publication A2:
	31.03.2010 Bulletin 2010/13

(21)	Application number: 10150777.0

(22)	Date of filing: 16.07.2008

(51)

International Patent Classification (IPC):

F04D 3/00^(2006.01)

F04D 29/18^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA MK RS

(30)

Priority:

17.07.2007 NL 1034150

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	08785029.3

(71)	Applicant: Manshanden, Gerardus Augustinus Maria
	1671 LA Medemblik (NL)

(72)	Inventor:
	Manshanden, Gerardus Augustinus Maria 1671 LA Medemblik (NL)

(74)	Representative: Vernout, Robert et al
	Arnold & Siedsma Sweelinckplein 1 2517 GK Den Haag 2517 GK Den Haag (NL)

(54)	Sinking pump safe for fish

(57) The invention relates to a sinking pump, comprising:
- a tubular housing with a feed opening and a discharge opening;
- at least one drivable pump rotor arranged in the tubular housing;

wherein the pump rotor comprises a cylindrical casing, which casing lies sealingly against the inner wall of the tubular housing.
The invention further relates to a pumping station for pumping surface water from a lower level to a higher level, comprising a sinking pump according to any of the foregoing claims.

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