| 9202248 |
Ad matching system and method thereof |
Hongguang Bi, Julie Mattern, Matt Meyer, Duc Chau |
2015-12-01 |
| 5984051 |
Remote elevator call requests with descriptor tags |
Robert G. Morgan, David Crenella, Bruce Zepke, Harold Terry |
1999-11-16 |
| 5929399 |
Automatic open loop force gain control of magnetic actuators for elevator active suspension |
Thomas He, Daniel S. Williams |
1999-07-27 |
| 5864102 |
Dual magnet controller for an elevator active roller guide |
Thomas He, Daniel S. Williams |
1999-01-26 |
| 5824976 |
Method and apparatus for sensing fault conditions for an elevator active roller guide |
Daniel S. Williams |
1998-10-20 |
| 5810120 |
Roller guide assembly featuring a combination of a solenoid and an electromagnet for providing counterbalanced centering control |
Dang V. Nguyen, Kelly Schaefer |
1998-09-22 |
| 5765663 |
Methods and apparatus for preventing undue wear of elevator actuators |
Daniel S. Williams |
1998-06-16 |
| 5631452 |
System for position loss recovery for an elevator car |
Christopher Pietrzykowski, Jeffrey M. Izard |
1997-05-20 |
| 5531294 |
Bias torque for elevator hoist drive to avoid rollback, rollforward |
Douglas A. Burton |
1996-07-02 |
| 5407028 |
Tested and redundant elevator emergency terminal stopping capability |
Christopher Pietrzykowski |
1995-04-18 |
| 5407030 |
Recalibrating an elevator loadweighing system |
Douglas A. Burton |
1995-04-18 |
| 5366044 |
Bidirectional eddy current overspeed protection for elevators |
Young S. Yoo, Breffni X. Baggot |
1994-11-22 |
| 5345042 |
Elevator hitch load weighing tare compensation |
— |
1994-09-06 |
| 5343003 |
Recalibration of hitch load weighing using dynamic tare |
Richard C. McCarthy, Young S. Yoo |
1994-08-30 |
| 5321216 |
Restraining elevator car motion while the doors are open |
Charles F. Fifield |
1994-06-14 |
| 5301773 |
Positive terminal overspeed protection by rail grabbing |
Young S. Yoo, Rudi Steger, Richard C. McCarthy |
1994-04-12 |
| 5172782 |
Pivot mount of elevator load-weighing at car hitch |
Young S. Yoo |
1992-12-22 |
| 5107964 |
Separate elevator door chain |
Steven D. Coste |
1992-04-28 |