Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6321534 | Ride control | Michael A. A'Hearn, Thomas J. Hajek, Jr., Michael Hudson, Srikrishnan T. Tolappa | 2001-11-27 |
| 5421545 | Poppet valve with force feedback control | — | 1995-06-06 |
| 5220862 | Fluid regeneration circuit | — | 1993-06-22 |
| 5207059 | Hydraulic control system having poppet and spool type valves | — | 1993-05-04 |
| 5137254 | Pressure compensated flow amplifying poppet valve | James A. Aardema, Andrew H. Nippert | 1992-08-11 |
| 4586332 | Hydraulic swing motor control circuit | — | 1986-05-06 |
| 4425758 | Maintaining hydrostatic system control pressure | Jerome A. Thies | 1984-01-17 |
| 4365473 | Hydrostatic transmission having an overspeed control | William J. Spivey, Jr. | 1982-12-28 |
| 4230022 | Hydraulic rock breaker circuit for an excavator | Donald L. Bianchetta | 1980-10-28 |