Issued Patents All Time
Showing 1–25 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12227046 | Integrated lift axle suspension system and method of use | Lyle Edward Turkson, David H. Croston | 2025-02-18 |
| 12214639 | Integrated lift axle suspension system and method of use | Lyle Edward Turkson, David H. Croston | 2025-02-04 |
| 9085209 | Multiple axle equalizing rubber suspension (ERT) | David H. Croston, Michael K. Powers | 2015-07-21 |
| 9039034 | Multiple axle equalizing rubber suspension | David H. Croston, Michael K. Powers | 2015-05-26 |
| 8727363 | Suspension system having parallel air spring and rubber force reaction | David H. Croston | 2014-05-20 |
| 8720922 | Suspension system with single moving element | David H. Croston | 2014-05-13 |
| 8328211 | Suspension system with single moving element | David H. Croston | 2012-12-11 |
| 8256782 | Suspension assembly | David H. Croston | 2012-09-04 |
| 8235403 | Suspension assembly | David H. Croston | 2012-08-07 |
| 8226098 | Suspension system with a retrofit suspension kit | David H. Croston | 2012-07-24 |
| 8220809 | Independent parallelogram suspension system | David H. Croston | 2012-07-17 |
| 7980577 | Suspension assembly | David H. Croston | 2011-07-19 |
| 7758056 | Suspension assembly with coaxial torsion bar | David H. Croston | 2010-07-20 |
| 7726674 | Suspension assembly | David H. Croston | 2010-06-01 |
| D579759 | Mounting bracket | Mickey L. Strait, Gregory A. Laarman | 2008-11-04 |
| 7398959 | Apparatus for supporting the trailer of a tractor-semitrailer | Jose Gallego, Gerald Muller, Steffen Pfister | 2008-07-15 |
| 6921098 | Independent suspension system for light and medium duty vehicles | David H. Croston | 2005-07-26 |
| 6846016 | Trailer landing gear | Jose Gallego, Gerald Muller, Steffen Pfister | 2005-01-25 |
| 6796566 | Lift axle suspension system utilizing diaphragm chambers | — | 2004-09-28 |
| 6769703 | Air bladder suspension system | — | 2004-08-03 |
| 6585223 | Variable compliance bushing | — | 2003-07-01 |
| 5988672 | Suspension system with integral box beam | — | 1999-11-23 |
| 5944339 | Integrated axle suspension anti-roll arrangement for push-pull suspension | Thomas A. McKenzie | 1999-08-31 |
| 5915705 | Lift mechanism for vehicle suspensions | — | 1999-06-29 |
| 5908198 | Center beam suspension system | — | 1999-06-01 |