Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11338786 | Spring brake actuator with diaphragm retainer | Robert L. Koelzer, Aaron C. Bradford, David C. Rhoads, Michael R. Jenkins | 2022-05-24 |
| 10889280 | Spring brake actuator with diaphragm retainer | Robert L. Koelzer, Aaron C. Bradford, David C. Rhoads, Michael R. Jenkins | 2021-01-12 |
| 10493972 | Pneumatic brake actuator with flow insensitive two way control valve | Aaron C. Bradford | 2019-12-03 |
| 10391997 | Spring brake actuator with a caging bolt bearing joining a pressure plate and actuator tube | Aaron C. Bradford | 2019-08-27 |
| 9701297 | Pneumatic brake actuator with flow insensitive two way control valve | Aaron C. Bradford | 2017-07-11 |
| 9688261 | Spring brake actuator with a caging bolt bearing joining a pressure plate and actuator tube | Aaron C. Bradford | 2017-06-27 |
| 8978839 | Pneumatic brake actuator with flow insensitive two way control valve | Aaron C. Bradford | 2015-03-17 |
| 8443714 | Vibration/shock resistant stud housing | — | 2013-05-21 |
| 8100047 | Slip seal diaphragm for spring brake actuator | Jess D. Thiel | 2012-01-24 |
| 7121191 | Air-operated brake actuator with control valve | — | 2006-10-17 |
| 7028814 | Method and apparatus for positioning an end of a push rod of a brake actuator | — | 2006-04-18 |
| 6988442 | Air brake diaphragms which resist pull-out | — | 2006-01-24 |
| 6874405 | Breather filter for sealed spring brake actuators | — | 2005-04-05 |
| 6755233 | Method and apparatus for positioning an end of a push rod of a brake actuator | — | 2004-06-29 |
| 6106079 | Brake system valve having an anti-compounding feature | — | 2000-08-22 |
| 6050372 | Tamper-resistant brake actuator and method of making the same | — | 2000-04-18 |
| 5623862 | Long stroke spring brake actuator | Roger D. Hanaway, John Heard, III | 1997-04-29 |
| 5580101 | Tapered joint thread system | William E. Fritsche | 1996-12-03 |
| 5139378 | Adjustable retaining apparatus | — | 1992-08-18 |