| 11365921 |
System and method of freeze protection for a chiller |
Tathagata De |
2022-06-21 |
|
| 9842446 |
Systems and methods for lock access management using wireless signals |
Greg Berry |
2017-12-12 |
|
| 9721402 |
Access control apparatus with modular encoder subassembly |
Levent Gosterisli, Craig Bonnett, Dennis Bailey |
2017-08-01 |
|
| 8356698 |
Wireless elevator hall fixtures integral with hall door frame |
Bruce Zepke, Adriana Bacellar, Luiz Bacellar, Dennis Bellamy, Christian Netter +6 more |
2013-01-22 |
|
| 7597177 |
Ultrasonic/electromagnetic non-contact buttons/switches for elevators |
Jae-Hyuk Oh, John M. Milton-Benoit, Pei-Yuan Peng, Norbert A. M. Hootsmans |
2009-10-06 |
$79,436,000 |
| 7479861 |
Inductively coupled power, useful for wireless elevator hall fixtures |
Bruce Zepke, William A. Veronesi, Joseph Zacchio, Paul A. Stucky, Dennis Bellamy +4 more |
2009-01-20 |
$63,988,000 |
| 7426981 |
Elevator wireless communication infrastructure using piconet modules |
Luiz Bacellar, Deborah C. Haas, Adriana Bacellar, Bruce Zepke, Christian Netter +3 more |
2008-09-23 |
$106,173,000 |
| 7264090 |
Elevator employing radio frequency identification devices (RFIDs) |
Adriana Bacellar, Luiz Bacellar, Deborah C. Haas, Christian Netter, Paul A. Stucky +3 more |
2007-09-04 |
$55,542,000 |
| 6848543 |
Single wall interface traction elevator |
Leandre Adifon, Pedro S. Baranda, Marc Chevilliard, Jean Marc Ferrary, Ron Laliberte +3 more |
2005-02-01 |
$57,347,000 |
| 6484849 |
Elevator speed measurement system including reflective signal technology for making speed determinations |
Michael P. Flynn |
2002-11-26 |
$47,519,000 |
| 6467585 |
Wireless safety chain for elevator system |
Michael Gozzo, Robert G. Morgan |
2002-10-22 |
$36,766,000 |
| 6401875 |
Absolute position sensing method and apparatus for synchronous elevator machines by detection stator iron saturation |
Daryl J. Marvin, Mark Eugene Shepard, Todd Simonds, Vladan Petrovic |
2002-06-11 |
$47,427,000 |
| 6253879 |
Apparatus and method of determining overspeed of an elevator car |
Clement A. Skalski |
2001-07-03 |
$68,383,000 |
| 5929400 |
Self commissioning controller for field-oriented elevator motor/drive system |
Roy S. Colby, Neil A. Greiner, Leslie Lamontagne, Ronnie E. Thebeau |
1999-07-27 |
$18,391,000 |
| 5909018 |
Automatic fine-tuning of rotor time constant and magnetizing current in field-oriented elevator motor drive |
Roy S. Colby |
1999-06-01 |
$34,373,000 |
| 5896954 |
Automatic fine tuning of rotor time constant in field-oriented elevator motor drive |
Roy S. Colby, Neil A. Greiner |
1999-04-27 |
$30,030,000 |
| 5889238 |
Deceleration time for an elevator car |
Christoph M. Ernecke, Gunter Blechschmidt, Peter Herkel |
1999-03-30 |
$34,529,000 |
| 5883344 |
Automatic calibration of field-oriented elevator motor drive parameters using standstill motor measurements |
Roy S. Colby, Leslie Lamontagne |
1999-03-16 |
$15,156,000 |
| 5880416 |
Automatic calibration of motor speed loop gain for an elevator motor control |
Roy S. Colby |
1999-03-09 |
$22,278,000 |
| 5880415 |
Automatic calibration of current regulator control compensation for an elevator motor drive with locked rotor |
Roy S. Colby, Leslie Lamontagne |
1999-03-09 |
$22,278,000 |
| 5777280 |
Calibration routine with adaptive load compensation |
Burkhard Braasch, Marvin Dehmlow, Jurgen Dieluweit, Christoph M. Ernecke, Thomas Gietzold |
1998-07-07 |
$19,780,000 |
| 5677519 |
Elevator leveling adjustment |
Peter Herkel, Christoph M. Ernecke, Mustapha Toutaoui |
1997-10-14 |
$46,436,000 |