Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6564897 | Synchronized/variable force feedback power steering | — | 2003-05-20 |
| RE37215 | Fork level indicator for lift trucks | Todd M. Fullenkamp, Harold A. Stammen | 2001-06-12 |
| 6241047 | Personnel carrying vehicle | Kevin A. Gilliland, Bradley A. Burns, Joseph H. Knapschaefer, John F. McClusky, Leif A. Norland +9 more | 2001-06-05 |
| 6009357 | Method and apparatus for monitoring the proper operation of a control system for materials handling vehicles | Timothy A. Wellman, Walter Conley, III | 1999-12-28 |
| 5890086 | Removable programmable cartridge for a lift truck control system | Timothy A. Wellman, John C. Wilkinson, Nicholas D. Thobe, Mark E. Schumacher | 1999-03-30 |
| 5738187 | Fork level indicator for lift trucks | Todd M. Fullenkamp, Harold A. Stammen | 1998-04-14 |
| 5687081 | Lift truck control system | Timothy A. Wellman, John C. Wilkinson, Nicholas D. Thobe, Mark E. Schumacher | 1997-11-11 |
| 5586620 | Remote viewing apparatus for fork lift trucks | Todd M. Fullenkamp, Harold A. Stammen | 1996-12-24 |
| 5509509 | Proportional control of a permanent magnet brake | John R. Harman | 1996-04-23 |
| 5343145 | Method and apparatus for monitoring the proper operation of a hall effect device used in detecting buried magnets in a control system for materials handling vehicles | Timothy A. Wellman, Walter Conley, III | 1994-08-30 |
| 5205620 | Two force levels of mechanical braking for materials handling vehicles | Harold A. Stammen | 1993-04-27 |
| 5103226 | Height sensor for turret stockpicker | Tim A. Wellman | 1992-04-07 |
| 5057728 | Three step electric brake | Nicholas J. Sherman, Nicholas D. Thobe | 1991-10-15 |
| 5044472 | Dual operator position for material handling vehicle | Harold A. Stammen | 1991-09-03 |
| 5011363 | Extend and retract control for fork lifts | Walter Conley, III, Kim A. Klopfleisch | 1991-04-30 |
| 5008604 | Dynamic clipper for use in a vehicle guidance system | Nick D. Thobe | 1991-04-16 |
| 4982189 | Encoder with wide index | — | 1991-01-01 |
| 4280205 | Ultrasonic fork height measuring apparatus | — | 1981-07-21 |
| 4276622 | Ultrasonic distance measuring circuit | — | 1981-06-30 |
| 4265337 | Fork lift truck speed control dependent upon fork elevation | — | 1981-05-05 |