EP 0664400 B1 19990317 - Magnetic drive pump
Title (en)
Magnetic drive pump
Title (de)
Magnetpumpe
Title (fr)
Pompe à entraînement magnétique
Publication
Application
Priority
- DE 4343854 A 19931222
- US 48891095 A 19950609
Abstract (en)
[origin: US5580216A] A magnetic pump is provided which is especially useful for pumping corrosive agents, having simplified components made of a hard ceramic, preferably silicon carbide, which form ceramic-on-ceramic axial and radial bearing surfaces. The pump has an impeller and magnetic rotor, each being mounted on an opposite end of a ceramic shaft by a respective ceramic bush. The shaft rides in ceramic first and second plain bearing bushes, each of which forms a radial bearing surface and an axial bearing journal end face. The ceramic impeller bush is secured to the shaft by a form fit and provides an axial bearing surface against the first bearing bush end face. Similarly, the ceramic rotor bush is secured to the shaft by a form fit and forms an axial bearing surface against the end face of the second plain bush.
IPC 1-7
IPC 8 full level
F04D 13/02 (2006.01); F04D 29/04 (2006.01); F04D 29/041 (2006.01); F04D 29/043 (2006.01); F04D 29/046 (2006.01); F04D 29/047 (2006.01)
CPC (source: EP US)
F04D 13/026 (2013.01 - EP US); F04D 29/0413 (2013.01 - EP US); F04D 29/043 (2013.01 - EP US); F04D 29/0465 (2013.01 - EP US); F04D 29/047 (2013.01 - EP US); F05C 2203/0813 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IE IT LI LU NL PT SE
DOCDB simple family (publication)
US 5580216 A 19961203; AT E177821 T1 19990415; DE 4343854 A1 19950713; DE 4343854 C2 19960118; DE 59407964 D1 19990422; DK 0664400 T3 19991011; EP 0664400 A1 19950726; EP 0664400 B1 19990317; ES 2129566 T3 19990616
DOCDB simple family (application)
US 48891095 A 19950609; AT 94118999 T 19941201; DE 4343854 A 19931222; DE 59407964 T 19941201; DK 94118999 T 19941201; EP 94118999 A 19941201; ES 94118999 T 19941201