Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6702400 | School bus door/service brake interlock retrofit system | — | 2004-03-09 |
| 6695893 | Continuous flow dryer reservoir module dryer system | Fred W. Hoffman, Leonard A. Quinn | 2004-02-24 |
| 6585464 | Pneumatic control system for trailer container chassis latching | — | 2003-07-01 |
| 6523625 | 6×2 suspension control for automatic traction control | William P. Amato | 2003-02-25 |
| 6488343 | Parking control circuit | David John Knight | 2002-12-03 |
| 6425935 | Trailer air dryer with purge during park feature | William P. Amato, Fred W. Hoffman | 2002-07-30 |
| 6322159 | Latching electric-control vehicle air brake system | — | 2001-11-27 |
| 6308793 | Proportional load transfer valve for suspension control with 6.times.2 automatic traction control | — | 2001-10-30 |
| 6264291 | Spring brake actuator with integral biased double check valve for anti-compounding and roll-back protection | Andrew Marsh, William P. Amato | 2001-07-24 |
| 6179391 | Relay valve with integral biased double check valve | Gary R. Hendershot, John Kemer, Andrew Marsh, Richard T. Ross, Chris G. Swansegar | 2001-01-30 |
| 6062652 | Pneumatic system to fast fill trailer reservoirs | — | 2000-05-16 |
| 5378054 | System to conserve stop lamp circuit power on intermediate vehicles of vehicle train | — | 1995-01-03 |
| 5251967 | Fluid pressure braking system with low pressure warning mechanism | — | 1993-10-12 |
| 5226692 | Fluid pressure braking system | — | 1993-07-13 |
| 5209764 | Compressed air system with twin air dryers | — | 1993-05-11 |
| 5036961 | Auxiliary parking brake system | Kenneth L. Cramer | 1991-08-06 |
| 4944526 | Air suspension system with load controlled liftable axle | — | 1990-07-31 |