Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 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 |
| 7426981 | Elevator wireless communication infrastructure using piconet modules | Luiz Bacellar, Deborah C. Haas, Adriana Bacellar, Bruce Zepke, Christian Netter +3 more | 2008-09-23 |
| 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 |
| 6848543 | Single wall interface traction elevator | Leandre Adifon, Pedro S. Baranda, Marc Chevilliard, Jean Marc Ferrary, Ron Laliberte +3 more | 2005-02-01 |
| 6484849 | Elevator speed measurement system including reflective signal technology for making speed determinations | Michael P. Flynn | 2002-11-26 |
| 6467585 | Wireless safety chain for elevator system | Michael Gozzo, Robert G. Morgan | 2002-10-22 |
| 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 |
| 6253879 | Apparatus and method of determining overspeed of an elevator car | Clement A. Skalski | 2001-07-03 |
| 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 |
| 5909018 | Automatic fine-tuning of rotor time constant and magnetizing current in field-oriented elevator motor drive | Roy S. Colby | 1999-06-01 |
| 5896954 | Automatic fine tuning of rotor time constant in field-oriented elevator motor drive | Roy S. Colby, Neil A. Greiner | 1999-04-27 |
| 5889238 | Deceleration time for an elevator car | Christoph M. Ernecke, Gunter Blechschmidt, Peter Herkel | 1999-03-30 |
| 5883344 | Automatic calibration of field-oriented elevator motor drive parameters using standstill motor measurements | Roy S. Colby, Leslie Lamontagne | 1999-03-16 |
| 5880416 | Automatic calibration of motor speed loop gain for an elevator motor control | Roy S. Colby | 1999-03-09 |
| 5880415 | Automatic calibration of current regulator control compensation for an elevator motor drive with locked rotor | Roy S. Colby, Leslie Lamontagne | 1999-03-09 |
| 5777280 | Calibration routine with adaptive load compensation | Burkhard Braasch, Marvin Dehmlow, Jurgen Dieluweit, Christoph M. Ernecke, Thomas Gietzold | 1998-07-07 |
| 5677519 | Elevator leveling adjustment | Peter Herkel, Christoph M. Ernecke, Mustapha Toutaoui | 1997-10-14 |