Patent · US Active

Electrical machine with magnetic bearing and safety bearing

US7952247B2 · kind B2 · utility

2Cited by

3References

10Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Ingo Menz · Berlin, DE
Peter Petereit · Berlin, DE
Günther Siegl · Berlin, DE

Key dates

Filing date	Mar 15, 2007
Grant date	May 31, 2011
Priority date	—
Expiry date	Mar 15, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH02K7/09
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

In case there is a malfunction of the magnetic bearing in an electrical machine, in which such magnetic bearings drive a rotary shaft in a stator (10), a safety bearing (14,14′) is provided. According to the present invention, the safety bearing (14,14′) exhibits an outer ring (16,16′) that is mounted on the stator (10), inside of which a revolving ring (22,22′,26) is operated. The safety bearing according to the present invention is particularly suited for machines that have a particularly large and heavy shaft.

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