Patent · US Expired

Drive device with electric motor

US6072254A · kind A · utility

9Cited by

6References

4Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Johannes Heib · Bühl, DE
Norbert Knab · Appenweier, DE
Volker Aab · Lichtenau, DE

Key dates

Filing date	Oct 8, 1998
Grant date	Jun 6, 2000
Priority date	—
Expiry date	Oct 8, 2018

Classification

Technology area (CPC H)Electricity
CPC primaryH02K7/1166
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A drive device has an electric motor having a rotor, a rotor shaft rotatable by the rotor, a ring magnet which is rotatable during the operation of the electric motor and having at least one North pole and one South pole, a hall sensor oriented to the ring motor, the ring motor being rotatably supported at a distance from the rotor shaft near the rotor shaft, and a drive wheel arranged on the rotor shaft, the ring magnet being in a driving connection with the drive wheel, the drive wheel having a diameter which is a greater than a diameter of the ring magnet.

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