Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5372059 | Fluid operated brake actuator with internal valve | John Bowyer | 1994-12-13 |
| 5353688 | Tamper-resistant brake actuator | William J. Hicks | 1994-10-11 |
| 5345858 | Spring brake actuator with a pressure plate bearing for a caging tool | — | 1994-09-13 |
| 5335695 | Height control valve with adjustable spool | — | 1994-08-09 |
| 5335932 | Apparatus for mounting a trailing arm air suspension to a sliding frame | — | 1994-08-09 |
| 5320026 | Spring brake actuator with dust guard | — | 1994-06-14 |
| 5315918 | Tamper-resistant brake actuator | — | 1994-05-31 |
| 5203585 | Split-beam suspension system | — | 1993-04-20 |
| 5116075 | Trailing arm suspension with wrapper compression axle mounting | — | 1992-05-26 |
| 5112078 | Axle mounting assembly | Gregory Galazin | 1992-05-12 |
| 5088763 | Apparatus for mounting a trailing arm air suspension to a sliding frame | Gregory Galazin | 1992-02-18 |
| 5083812 | Suspension with stiffener arm | Donovan B. Wallace | 1992-01-28 |
| 4858949 | Lightweight trailing arm suspension | Donovan B. Wallace | 1989-08-22 |
| 4729579 | Axle lift mechanism with spring cup wear plate | Lyle M. Hagan | 1988-03-08 |
| 4693486 | Trailing arm suspension with wrapper compression axle mounting | John P. Smith | 1987-09-15 |
| 4634141 | Axle lift mechanism | Lyle M. Hagan | 1987-01-06 |
| 4615539 | Suspension for automotive vehicles | — | 1986-10-07 |
| 4601378 | Supporting bracket for hydraulic pump and clutch | Jack Edgar West | 1986-07-22 |
| 4564092 | Two speed, two pulley compressor drive clutch | — | 1986-01-14 |
| 4553773 | Load equalizer valve and suspension system | — | 1985-11-19 |
| 4296851 | Drive hub with curved springs and drive keys for electro-magnetic clutch | — | 1981-10-27 |
| 4262929 | Suspension with resilient reaction bar | — | 1981-04-21 |