| 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 |