Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12180035 | Elevator cab ventilation | Cuauhtemoc Castro Inzunza | 2024-12-31 |
| 12122639 | Mobile interface, communication, and control system to facilitate operation of elevator cars with media options | Cuauhtemoc Castro, Nicholas Fraser | 2024-10-22 |
| 11905142 | Elevator system control based on building sway | Randy Roberts, George Scott Copeland, Luis C. Encinas Carreno, Cuauhtemoc Castro | 2024-02-20 |
| 11898776 | Elevator cab air purification | Cuauhtemoc Castro Inzunza | 2024-02-13 |
| 11440774 | Elevator roping sway damper assembly | Cuauhtemoc Castro Inzunza, Michael J. Tracey | 2022-09-13 |
| 11377323 | Retrofitting an elevator machine with primary and secondary braking | Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard +5 more | 2022-07-05 |
| 11299374 | Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine | Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard +5 more | 2022-04-12 |
| 11292693 | Elevator system control based on building sway | Randy Roberts, George Scott Copeland, Luis C. Encinas Carreno, Cuauhtemoc Castro | 2022-04-05 |
| 11267675 | Cooling system for elevator with electronic visual displays | Cuauhtemoc Castro | 2022-03-08 |
| 11198589 | Elevator system including a protective hoistway liner assembly | George Scott Copeland, Richard K. Pulling, Randy Roberts | 2021-12-14 |
| 11130655 | Elevator car dynamic sag damping system | Randall S. Dube | 2021-09-28 |
| 10737908 | Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine | Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard +5 more | 2020-08-11 |
| 10669124 | Elevator system including a protective hoistway liner assembly | George Scott Copeland, Richard K. Pulling, Randy Roberts | 2020-06-02 |
| 10618775 | Retrofitting an elevator machine with primary and secondary braking | Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard +5 more | 2020-04-14 |
| 10532910 | Underslung elevator car configuration | Minglun Qiu, Anying Shen, Richard S. Blakelock, Jay S. Lengacher, Brian K. Meek +2 more | 2020-01-14 |
| 10494228 | Guiding devices for elevator systems having roller guides and motion sensors | Bruce P. Swaybill, Randy Roberts, Philip R. James | 2019-12-03 |
| 9701515 | Underslung elevator car configuration | Minglun Qiu, Anying Shen, Richard S. Blakelock, Jay S. Lengacher, Brian K. Meek +2 more | 2017-07-11 |
| 7810611 | Elevator car assembly having an adjustable platform | Qingian Zeng, Bryan Robert Siewert | 2010-10-12 |
| 7670240 | Elevator belt assembly with noise reducing groove arrangement | John T. Pitts, Bruce P. Swaybill, Hugh J. O'Donnell | 2010-03-02 |
| 6367581 | Sound absorbing light fixture | Mark E. Marler, Charles C. Coffin, Brad Guilani, Heng-Yi Lai | 2002-04-09 |