Patent · US Expired

Magnetic drive arrangement comprising a plurality of magnetically cooperating parts which are movable relative to one another

US5633555A · kind A · utility

85Cited by

10References

7Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Bernd Ackermann · Aachen, DE
Leo Honds · Aachen, DE

Key dates

Filing date	Feb 21, 1995
Grant date	May 27, 1997
Priority date	—
Expiry date	Feb 21, 2015

Classification

Technology area (CPC H)Electricity
CPC primaryH02K49/102
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A magnetic drive arrangement comprising a plurality of magnetically cooperating parts which are moveable relative to one another, one of the parts being connected to a drive shaft and one of the parts being stationary, the fields produced by the permanent magnets being modulated by soft-magnetic flux-carrying parts which include at least one toothed iron yoke, wherein structures are provided on both sides of the iron yoke to generate magnetic fields by means of permanent magnets at the sides facing the iron yoke, with the magnetic fields alternatively exhibiting north poles and south poles along the circumference.

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