Patent · US Expired

Drive arrangement, especially for a lifting mechanism and/or a traveling drive

US7068009B2 · kind B2 · utility

2Cited by

10References

30Claims

0Family size

Assignee

Demag Cranes & Components GmbH · DE

Inventors

Holger Freitag · Bochum, DE
Anton Munzebrock · Dortmund, DE
Burkhard Hasenack · Hagen, DE
Giuliano Persico · Wetter, DE
Erik Appel · Wetter, DE

Key dates

Filing date	Jun 28, 2004
Grant date	Jun 27, 2006
Priority date	—
Expiry date	Aug 19, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH02P23/24
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention concerns a drive arrangement of a lifting gear and/or a traveling gear, with a pole-reversible rotary-current motor with windings for at least two different actuating speeds, with a pole switching element connecting the rotary-current motor to a voltage supply for changing between the actuating speeds of the rotary-current motor. In order to create a drive arrangement of a lifting gear and/or a traveling gear with a rotary-current motor, whose switching behavior is optimized in relation to the actuation of the rotary-current motor, it is proposed that a power switching element (3) be hooked up in front of the pole switching element (5), and it can be separated from the voltage supply via the power switching element (3) for the pole switching process of the rotary-current motor (2).

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