Global Patent Index - EP 1293678 B1

EP 1293678 B1 20071010 - Pump impeller with valve function

Title (en)

Pump impeller with valve function

Title (de)

Laufrad mit Ventilfunktion

Title (fr)

Rouet de pompe avec fonction de clapet anti-retour intégré

Publication

EP 1293678 B1 20071010 (DE)

Application

EP 02013218 A 20020615

Priority

DE 10145411 A 20010914

Abstract (en)

[origin: EP1293678A2] The running wheel (6) of a rotary pump, mounted on a shaft, has a central suction opening as the entry port. When the running wheel is at rest, the leakage flow is blocked by a valve action through a sliding movement of the running wheel within the pump housing. The entry (20) and/or outflow (14) openings in the running wheel are blocked by the valve action. The inner wall has a cylindrical holder, to take the running wheel with an axial movement, and the wheel has an edge (13) which lies directly or indirectly at a sealing surface (18) of the holder when the wheel is pushed back.

IPC 8 full level

F04D 15/00 (2006.01); F04D 29/04 (2006.01); F04D 29/14 (2006.01); F04D 29/16 (2006.01); F04D 29/22 (2006.01)

CPC (source: EP)

F04D 15/0038 (2013.01); F04D 29/042 (2013.01); F04D 29/146 (2013.01); F04D 29/167 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 1293678 A2 20030319; EP 1293678 A3 20040107; EP 1293678 B1 20071010; DE 10145411 A1 20030403; DE 50211038 D1 20071129

DOCDB simple family (application)

EP 02013218 A 20020615; DE 10145411 A 20010914; DE 50211038 T 20020615