| 9531304 |
Method and device for operating an electrical machine having separate excitation |
Mercedes Herranz Gracia, Stefan Kolmorgen, Yves Challand, Daniel Raichle, Mario Beyer +3 more |
2016-12-27 |
| 9059584 |
Circuit arrangement for limiting the overvoltage of an excitation winding of a synchronous machine having rapid de-excitation |
Jochen Fassnacht, Hans-Peter Mueller |
2015-06-16 |
| 7650954 |
Method for controlling the drive power distribution in a motor vehicle with hybrid drive |
Axel Ibenthal, Thomas Proske, Matthias Schultalbers |
2010-01-26 |
| 6782989 |
Process for switching between mains supply and a frequency inverter and vice versa |
Herbert Horbrugger, Reinhard Henkel |
2004-08-31 |
| 6634463 |
Switch over from the mains supply to a frequency converter by a phase correction process for an escalator drive |
Michael Mann, Gunter Blechschmidt, Peter Walden, Robert Oesterle, Michael Bernhard Kocur |
2003-10-21 |
| 6626279 |
Process for switching between main supply and a frequency inverter and vice versa for an escalator drive |
Reinhard Henkel, Ralph S. Stripling, Richard Markus |
2003-09-30 |
| 6591947 |
Use of multi-state sensors |
Herbert Horbrugger, Peter Herkel |
2003-07-15 |
| 6267219 |
Electronic safety system for escalators |
Reinhard Henkel, Jurgen Gewinner |
2001-07-31 |
| 5883345 |
Sonic position measurement system |
Uwe Schonauer |
1999-03-16 |
