Patent · US Expired

Excess temperature and starting safety device in pumps having permanent magnet couplings

US5484265A · kind A · utility

117Cited by

7References

9Claims

0Family size

Assignee

Junkalor GmbH Dessau · DE

Inventors

Stefan Horvath · Dessau, DE
Karl-Otto Schmidt · Ansbach, DE
Henry Schommer · Jettenbach, DE
Gerhard Fiedler · Neckartailfingen, DE

Key dates

Filing date	Feb 8, 1994
Grant date	Jan 16, 1996
Priority date	—
Expiry date	Feb 8, 2014

Classification

Technology area (CPC H)Electricity
CPC primaryH02K5/128
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An excess temperature and starting safety device for a magnetic centrifugal pump, having a rotor which delivers the medium and whose shaft terminates at a gap dish, where it bears permanent magnets driven by oppositely disposed permanent magnets which are connected to the shaft of the driving motor, while attached to the inner or outer surface of the gap dish is a conductor, more particularly a piece of wire of a thermocouple whose other conductor, closing the conductor circuit, is formed by the gap dish.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.