Global Patent Index - EP 0291780 A1

EP 0291780 A1 19881123 - Pump with a magnetic drive.

Title (en)

Pump with a magnetic drive.

Title (de)

Pumpe mit Spaltrohrantrieb.

Title (fr)

Pompe à entraînement magnétique.

Publication

EP 0291780 A1 19881123 (FR)

Application

EP 88107267 A 19880506

Priority

FR 8706702 A 19870512

Abstract (en)

In the pump according to the invention which in particular comprises a body (20) having two parts (22, 36) forming a tight assembly, two apertures (32, 34) for the admission and outlet of a liquid to be pumped and means of connection (46, 48) to allow pipes (42, 44) to be connected in the vicinity of these apertures, and a rotary device (2), for example a screw, fixed inside this body, to draw the liquid in through one aperture and deliver it through the other, the two assembled parts of the body and the rotating device are made of a ceramic, composed mainly of aluminium (Al2O3), zirconium oxide (ZrO2), silicon nitride (Si3N4) or silicon carbide (SiC). Such a pump may be made without any joint and will convey virtually any type of liquid at either high or low temperature. <IMAGE>

IPC 1-7

F04D 13/02; F04D 29/02

IPC 8 full level

F04D 13/02 (2006.01); F04D 29/02 (2006.01)

CPC (source: EP)

F04D 13/027 (2013.01); F04D 29/026 (2013.01); F05B 2260/4041 (2013.01); F05D 2230/64 (2013.01); F05D 2300/2112 (2013.01); F05D 2300/2118 (2013.01); F05D 2300/2261 (2013.01); F05D 2300/2283 (2013.01)

Citation (search report)

Designated contracting state (EPC)

CH DE FR GB IT LI NL

DOCDB simple family (publication)

EP 0291780 A1 19881123; EP 0291780 B1 19911023; DE 3865730 D1 19911128; FR 2615252 A1 19881118

DOCDB simple family (application)

EP 88107267 A 19880506; DE 3865730 T 19880506; FR 8706702 A 19870512