Patent · US Active

Electric motor with a coil arrangement for providing oscillatory linear and rotational movement

US7554225B2 · kind B2 · utility

28Cited by

6References

23Claims

0Family size

Assignee

The Braun Corporation · DE

Inventors

Bernhard Kraus · Solms, DE
Hansjorg Reick · Steinbach, DE
Uwe Schober · Königstein, DE
Alexander Schroter · Steinbach, DE

Key dates

Filing date	May 25, 2006
Grant date	Jun 30, 2009
Priority date	—
Expiry date	Jul 17, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2201/18
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric motor for a small-scale electrical appliance, such as a toothbrush or shaver. The electric motor includes at least one oscillatory motor component, a magnet arrangement having at least one permanent magnet, and a coil for generating a magnetic field which, in interaction with the magnet arrangement, generates a force for excitation of an oscillatory linear motion. During the interaction between the magnet arrangement and the magnetic field produced by the coil, a torque for excitation of an oscillatory rotational motion is additionally generated.

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