Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7255203 | Clutch for coupling a car door of an elevator car with a landing door of an elevator system | Tian Zhou | 2007-08-14 |
| 7165653 | Elevator gearless traction machine construction | — | 2007-01-23 |
| 7013605 | Door suspension apparatus | Tian Zhou | 2006-03-21 |
| 6832449 | Door suspension system | Tian Zhou | 2004-12-21 |
| 6053287 | Linear drive for transportation equipment | Karl Weinberger, Gert Silberhorn | 2000-04-25 |
| 5760350 | Monitoring of elevator door performance | Ronald R. Pepin, Robert H. Mashiak, Sanjay Kamani, Patrick Lusaka | 1998-06-02 |
| 5566784 | Self-propelled elevator system | — | 1996-10-22 |