Patent · US Active

Electric motor, in particular a separately excited synchronous motor

US11545868B2 · kind B2 · utility

0Cited by

8References

10Claims

0Family size

Inventors

Michael Schwarzer · Aindling, DE
Peter Maischak · Hepberg, DE
Eike Janssen · Hude, DE
Benjamin Weis · Faulenmühle, DE

Key dates

Filing date	May 26, 2021
Grant date	Jan 3, 2023
Priority date	—
Expiry date	May 26, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH01R39/381
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric motor, in particular a separately excited synchronous motor, has a rotor shaft with at least one slip ring and at least one electrically conductive contact element, in particular a carbon brush, which bears against the slip ring and is accommodated in a channel-like guide formed in a housing and extending radially with respect to the rotor shaft and which carbon brush is radially tensioned against the slip ring by means of a spring element, wherein a roller is provided which is tensioned laterally against the contact element via a further spring element and via which the contact element is tensioned against a wall of the guide.

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