Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8297412 | Elevator dispatching control for sway mitigation | Richard K. Pulling | 2012-10-30 |
| 8136635 | Method and system for maintaining distance between elevator cars in an elevator system with multiple cars in a single hoistway | Theresa M. Christy, Harold Terry, Mauro J. Atalla, Arthur Hsu, CheongSik Shin +1 more | 2012-03-20 |
| 6216824 | Semi-active elevator hitch | James W. Fuller | 2001-04-17 |
| 5866861 | Elevator active guidance system having a model-based multi-input multi-output controller | Rajesh Rajamani, Timothy M. Remmers | 1999-02-02 |
| 5814774 | Elevator system having a force-estimation or position-scheduled current command controller | Timothy M. Remmers, Rajesh Rajamani, Roy S. Colby | 1998-09-29 |
| 5750945 | Active elevator hitch | James W. Fuller | 1998-05-12 |
| 5652414 | Elevator active guidance system having a coordinated controller | Timothy M. Remmers, Clement A. Skalski | 1997-07-29 |
| 5544721 | Method and apparatus for adjusting an elevator car based on stored horizontal displacement and acceleration information | — | 1996-08-13 |
| 5524730 | Method and apparatus for storing sensed elevator horizontal displacement and acceleration signals | — | 1996-06-11 |
| 5329077 | Elevator ride quality | Clement A. Skalski | 1994-07-12 |
| 5308938 | Elevator active suspension system | Richard L. Hollowell, Clement A. Skalski, John K. Salmon | 1994-05-03 |