Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7992850 | System and method for controlling electromagnet lift power for material handlers | Xiaojun Zhang, James I. Portscheller | 2011-08-09 |
| 7564662 | Overload protection system for an electromagnetic lift | Xiaojun Zhang, James I. Portscheller, Naga Raja Rao Mosam, Michael Lee Ferguson, Jr. | 2009-07-21 |
| H1910 | Rubber tired carrier | Ronald W. Clutter, Kenneth J. Chlad | 2000-11-07 |
| 5998944 | Method and apparatus for controlling a lifting magnet of a materials handling machine | Ronald W. Clutter, Kenneth J. Chlad, Charles A. Robinson | 1999-12-07 |
| 5977730 | Method and apparatus for controlling the flow of hydraulic fluid | Ronald W. Clutter, Kenneth J. Chlad, Charles A. Robinson | 1999-11-02 |
| 5959416 | Method and apparatus for controlling a lifting magnet of a materials handling machine | Ronald W. Clutter, Kenneth J. Chlad, Charles A. Robinson | 1999-09-28 |