Patent · US Expired

Interference-suppressed universal motor

US6982512B2 · kind B2 · utility

3Cited by

6References

6Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Hermann Schuster · Geltendorf, DE
Michael Reiner · Fellbach, DE
Josef Hunger · Olching, DE

Key dates

Filing date	Feb 8, 2005
Grant date	Jan 3, 2006
Priority date	—
Expiry date	Feb 8, 2025

Classification

Technology area (CPC H)Electricity
CPC primaryH02K11/026
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A universal motor having two carbon brushes (2a, 2b) and two series connected field coils (4a, 4b). The universal motor having an interference suppressing capacitor (5) with a first terminal (6a) connected directly to the first carbon brush (2a) and connected with a field coil (4a) in a conducting manner. The interference suppressing capacitor (5) also including a second terminal (6b) connected directly to the second carbon brush (2b) and connected to a power line (8b) in a conducting manner.

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