Patent · US Expired

Brushless D.C. motor

US7215052B2 · kind B2 · utility

43Cited by

20References

8Claims

0Family size

Assignee

JOHNSON ELECTRIC S.A. · CH

Inventors

Benno Blase · Waiblingen, DE
Andreas Schlegel · Echterdingen, DE

Key dates

Filing date	Dec 19, 2002
Grant date	May 8, 2007
Priority date	—
Expiry date	Apr 3, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S310/03
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The brushless direct current motor comprises a housing 10, a stator 13 and a rotor 11 within the housing, windings on the stator, sensors for sensing the position of the rotor relative to the stator and electronic circuitry for switching the current in the windings in response to outputs from the sensors to cause the rotor to rotate relative to the stator. The sensors and at least a part of the electronic circuitry are encapsulated in an electrically insulating and fuel resistant material in a container within the housing.

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