EP 0623752 A1 19941109 - Centrifugal pump impeller.
Title (en)
Centrifugal pump impeller.
Title (de)
Kreiselpumpenlaufrad.
Title (fr)
Rouet de pompe centrifuge.
Publication
Application
Priority
DE 4311746 A 19930408
Abstract (en)
The invention relates to the inlet edges (suction edges) of blades of centrifugal-pump impellers which deliver solids-containing media. In the plane of the central blade face there is, upstream of the inlet edges of the blades, a very flat transition from the impeller backdisks to the inlet edges of the blades. <IMAGE>
Abstract (de)
Die Erfindung betrifft die Schaufelanfänge von feststoffhaltige Medien fördernden Kreiselpumpenlaufrädern. In der Ebene der mittleren Schaufelfläche erfolgt vor den Schaufelanfängen ein sehr flacher Übergang von den Laufraddeckscheiben in die Schaufelanfänge. <IMAGE>
IPC 1-7
IPC 8 full level
F04D 29/22 (2006.01); F04D 29/24 (2006.01)
CPC (source: EP US)
F04D 29/2294 (2013.01 - EP US); F04D 29/242 (2013.01 - EP US); F05D 2240/303 (2013.01 - EP)
Citation (search report)
- [X] US 1946273 A 19340206 - CARR BRADLEY S
- [XA] GB 2256901 A 19921223 - INGERSOLL RAND CO [US]
- [A] US 3130678 A 19640428 - CHENAULT WILLIAM F
- [A] SOVIET PATENTS ABSTRACTS Section PQ Week 8507, 27 March 1985 Derwent World Patents Index; Class Q56, AN 85-043087
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 4311746 A1 19941013; DE 59406861 D1 19981015; EP 0623752 A1 19941109; EP 0623752 B1 19980909; US 5478200 A 19951226
DOCDB simple family (application)
DE 4311746 A 19930408; DE 59406861 T 19940328; EP 94104842 A 19940328; US 22464094 A 19940406