Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11970369 | Beam climber battery charging in transfer station | Randy Roberts | 2024-04-30 |
| 11814264 | Yoke assembly for suspending an elevator car or a counterweight in a shaft of an elevator | Daniel Rohrer | 2023-11-14 |
| 11738971 | Elevator governor tension frame damper | — | 2023-08-29 |
| 11434107 | Rope-climbing self propelled elevator system | Kiron Bhaskar | 2022-09-06 |
| 10875743 | Rope-climbing self propelled elevator system | Kiron Bhaskar | 2020-12-29 |
| 10399820 | Elevator tension member stiffness estimation and monitoring | Randall Keith Roberts, YiSug Kwon, David Wayne Mckee | 2019-09-03 |
| 8444515 | Elevator belt assembly with noise and vibration reducing grooveless jacket arrangement | Pedro S. Baranda, John T. Pitts, Hugh J. O'Donnell | 2013-05-21 |
| 8047335 | Shock absorbing hitch | Richard N. Fargo | 2011-11-01 |
| 7878306 | Elevator system without a moving counterweight | Bryan Robert Siewert, Mark S. Thompson | 2011-02-01 |
| 6742769 | Elevator sheave for use with flat ropes | Pedro S. Baranda, John T. Pitts, John P. Wesson, Douglas E. Logan, Zlatko Strbuncelj +1 more | 2004-06-01 |
| 6419208 | Elevator sheave for use with flat ropes | Pedro S. Baranda, John T. Pitts, John P. Wesson, Douglas E. Logan | 2002-07-16 |
| 6193016 | Dual sheave rope climber using flat flexible ropes | Samuel C. Wan, Guillaume Bonatre | 2001-02-27 |
| 5931265 | Rope climbing elevator | Samuel C. Wan | 1999-08-03 |
| 5439075 | Elevator active suspension system | Clement A. Skalski, John K. Salmon, Boris G. Traktovenko | 1995-08-08 |
| 5400872 | Counteracting horizontal accelerations on an elevator car | Clement A. Skalski, John K. Salmon | 1995-03-28 |
| 5368132 | Suspended elevator cab magnetic guidance to rails | John K. Salmon | 1994-11-29 |
| 5322144 | Active control of elevator platform | Clement A. Skalski, John K. Salmon, Boris G. Traktovenko | 1994-06-21 |
| 5321217 | Apparatus and method for controlling an elevator horizontal suspension | Boris G. Traktovenko, Clement A. Skalski | 1994-06-14 |
| 5308938 | Elevator active suspension system | Randall Keith Roberts, Clement A. Skalski, John K. Salmon | 1994-05-03 |
| 5294757 | Active vibration control system for an elevator, which reduces horizontal and rotational forces acting on the car | Clement A. Skalski, John K. Salmon, Boris G. Traktovenko | 1994-03-15 |