| 11414297 |
Elevator safety device |
Peter Herkel, Ralph S. Stripling, Sven Knuth, Raphael Pecek |
2022-08-16 |
| 9988239 |
Preventative maintenance by detecting number of switching events of components |
— |
2018-06-05 |
| 9580276 |
Elevator system with messaging for automated maintenance |
— |
2017-02-28 |
| 5783783 |
Correction run for an elevator system |
Jan Kradin |
1998-07-21 |
| 5711112 |
Double-drive automatic sliding door operator |
Michael Barten, Rudiger Lob, Helmut Schroder-Brumloop |
1998-01-27 |
| 5677519 |
Elevator leveling adjustment |
Peter Herkel, Christoph M. Ernecke, Alberto Vecchiotti |
1997-10-14 |
| 5587566 |
Method for adjusting an elevator door |
Michael Barten |
1996-12-24 |
| 5384439 |
Adaptive digital velocity control loop for a high performance elevator door system with low cost |
Christoph M. Ernecke, Michael Barten |
1995-01-24 |
| 5378861 |
Automatic setting of the parameters of a profile generator for a high performance elevator door system |
Michael Barten |
1995-01-03 |
| 5157228 |
Adjusting technique for a digital elevator drive system |
Bernd Ackermann, Peter Herkel, Herbert K. Horbruegger |
1992-10-20 |
| 5137119 |
Adaptive digital armature current control method for ward-leonard elevator drives using an SCR generator field converter |
Herbert K. Horbruegger |
1992-08-11 |
| 5076399 |
Elevator start control technique for reduced start jerk and acceleration overshoot |
Herbert K. Horbruegger, Bernd Ackermann, Peter Herkel |
1991-12-31 |