The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 2025
Filed:
Nov. 03, 2021
Inventio Ag, Hergiswil, CH;
Alexander Prenner, Pöttsching, AT;
Inventio AG, Hergiswil, CH;
Abstract
An electrical control device for controlling the drive of a passenger transport system which can be switched between load operation and idle operation is described. The electrical control device includes at least a three-phase mains voltage connection, a frequency converter, and a controllable switching device. The switching device can couple the three phases of the drive motor to the three phases of the mains voltage connection in a load operation switching state and to the three phases of the frequency converter in an idle operation switching state. In this manner, the drive motor is supplied with the three-phase mains voltage in the load operation switching state and with the three-phase output voltage of the frequency converter in the idle operation switching state.