EP 0294308 B1 19920826 - BLADED IMPELLOR FOR CENTRIFUGAL PUMPS
Title (en)
BLADED IMPELLOR FOR CENTRIFUGAL PUMPS
Publication
Application
Priority
ES 8702114 U 19870605
Abstract (en)
[origin: EP0294308A1] Bladed impellor for centrifugal pumps, of the type formed by two coaxial superimposed discs (1, 2) of like diameter between which there is regularly disposed a plurality of blades (3), characterized in that one of the discs (1, 2) is provided with a large axial orifice (5) and bears the said blades (3) fixedly attached to the inner surface thereof, while the other disc is provided with a central injection moulded hub (6) of a substantially rigid material, provided with a central tubular orifice (7). The disc bearing the hub (6) is provided previously with a central orifice (9) and several smaller orifices (10) around the central one (9), the injection moulded material of the hub (6) passing through said smaller orifices (10) after being injected.
IPC 1-7
IPC 8 full level
F04D 29/20 (2006.01); F04D 29/22 (2006.01)
CPC (source: EP)
F04D 29/2222 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0294308 A1 19881207; EP 0294308 B1 19920826; AT E79928 T1 19920915; DE 3874000 D1 19921001; DE 3874000 T2 19930114; ES 1002716 U 19880616; ES 1002716 Y 19890201; GR 3006308 T3 19930621
DOCDB simple family (application)
EP 88500056 A 19880603; AT 88500056 T 19880603; DE 3874000 T 19880603; ES 8702114 U 19870605; GR 920402221 T 19921120