Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11460083 | Systems and methods for sensing a brake component with an acoustic sensor | Robert L. Koelzer | 2022-10-04 |
| 11338786 | Spring brake actuator with diaphragm retainer | Robert L. Koelzer, Albert D. Fisher, David C. Rhoads, Michael R. Jenkins | 2022-05-24 |
| 10889280 | Spring brake actuator with diaphragm retainer | Robert L. Koelzer, Albert D. Fisher, David C. Rhoads, Michael R. Jenkins | 2021-01-12 |
| 10493972 | Pneumatic brake actuator with flow insensitive two way control valve | Albert D. Fisher | 2019-12-03 |
| 10391997 | Spring brake actuator with a caging bolt bearing joining a pressure plate and actuator tube | Albert D. Fisher | 2019-08-27 |
| 9701297 | Pneumatic brake actuator with flow insensitive two way control valve | Albert D. Fisher | 2017-07-11 |
| 9688261 | Spring brake actuator with a caging bolt bearing joining a pressure plate and actuator tube | Albert D. Fisher | 2017-06-27 |
| 9073527 | Smooth bore dynamic center seal for spring brake actuator | — | 2015-07-07 |
| 8978839 | Pneumatic brake actuator with flow insensitive two way control valve | Albert D. Fisher | 2015-03-17 |