Issued Patents 2022
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11492230 | Sheave liner including wear indicators | — | 2022-11-08 |
| 11377323 | Retrofitting an elevator machine with primary and secondary braking | Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, Martin J. Hardesty +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, Martin J. Hardesty +5 more | 2022-04-12 |
| 11254544 | Friction liner and traction sheave | David R. Torlai, Peter Keyo | 2022-02-22 |