Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9834265 | Rubber track system | — | 2017-12-05 |
| 6588314 | Sealed brake actuator | — | 2003-07-08 |
| 6164187 | Diaphragm retainer for spring brake actuator | — | 2000-12-26 |
| 6148711 | Normally-closed diaphragm check valve | — | 2000-11-21 |
| 6029447 | Spring brake actuator with filtered vent openings | Daniel Greenzweig | 2000-02-29 |
| 6006651 | Spring brake actuator with filtered service vent opening | William C. Pierce, William J. Hicks | 1999-12-28 |
| 5937733 | Spring brake actuator with internal breathing conduit | — | 1999-08-17 |
| 5873297 | Fluid-operated brake actuator with check valve | — | 1999-02-23 |
| 5771774 | Spring brake actuator having plastic pressure plate assembly | — | 1998-06-30 |
| 5722311 | Fluid-operated brake actuator with spring chamber isolation | William C. Pierce, William J. Hicks | 1998-03-03 |
| 5655431 | Spring brake actuator, caging bolt assembly therefor, and method of assembly thereof | William C. Pierce, Raymond D. Subdon | 1997-08-12 |
| 5640893 | Spring brake actuator with guide and bearing for an actuator rod | — | 1997-06-24 |
| 5526732 | Spring brake actuator and reaction plate anchor | — | 1996-06-18 |
| 5460076 | Fluid-operated brake actuator with internal check valve | Wiliam C. Pierce, John P. Smith | 1995-10-24 |