Patent · US Expired

Bicycle dynamo having a rotary-current generator

US5932943A · kind A · utility

17Cited by

20References

13Claims

0Family size

Assignee

FER Fahrzeugelektrik GmbH · DE

Inventors

Hermann Werner · Hamburg, DE
Erich Loessl · Eisenach, DE
Burkard Mueller · Korschenbroich, DE

Key dates

Filing date	Dec 6, 1996
Grant date	Aug 3, 1999
Priority date	—
Expiry date	Dec 6, 2016

Classification

Technology area (CPC H)Electricity
CPC primaryH02P2101/45
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A bicycle dynamo with a rotary-current generator having a stator and a rotor which can be rotated relative to the stator. The stator or the rotor has radially extending pole fingers which are wound individually with one surrounding magnetic coil winding respectively. The ratio of the number of poles of the rotor to the number of poles of the stator is a non-integer value, and the ratio of the number of poles of the stator to the number of poles of the rotor is a non-integer value. This permits the implementation of a bicycle dynamo of a high efficiency even at a relatively low riding speed, which may be used, for example, to power bicycle lighting systems.

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