Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12371077 | Sensing method, system and assembly for railway assets | Justin M. Lidgett, Andrew H. Martin, Evan Weiner | 2025-07-29 |
| 6688236 | Friction wedge design optimized for high warp friction moment and low damping force | — | 2004-02-10 |
| 6422155 | Rail car truck pedestal shear pad | Thomas J. Heyden, Wilson W. S. Pak | 2002-07-23 |
| 6269752 | Friction wedge design optimized for high warp friction moment and low damping force | — | 2001-08-07 |
| 5918547 | Roller bearing adapter stabilizer bar | Robert L. Bullock | 1999-07-06 |
| 5850795 | Rail car truck damping system | — | 1998-12-22 |
| 5735216 | Roller bearing adapter stabilizer bar | Robert L. Bullock | 1998-04-07 |
| 5555817 | Pad of substantially rigid synthetic resin for a friction wedge in a bolster pocket | Philip J. Brunkhorst | 1996-09-17 |
| 5544591 | Stabilized roller bearing adapter | — | 1996-08-13 |
| 5316421 | User friendly wheel chock system | Robert L. Bullock | 1994-05-31 |
| 5037255 | Wheel chock for a motor vehicle container | Robert L. Bullock | 1991-08-06 |