Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5213136 | Selection switch for fluid power motors | Stephen F. Sims | 1993-05-25 |
| 5159987 | Valve construction for automatic shut-off screwdrivers and the like | Stephen F. Sims | 1992-11-03 |
| 5156244 | Torque sensing automatic shut-off and reset clutch for screwdrivers, nutsetters and the like | Douglas E. Pyles, Ward W. Harvey | 1992-10-20 |
| 5054588 | Torque sensing automatic shut-off and reset clutch for screwdrivers, nutsetters and the like | Ward W. Harvey, Douglas E. Pyles | 1991-10-08 |
| 4880064 | Torque sensing, automatic shut-off and reset clutch for screwdrivers, nutsetters and the like | Robert A. Willoughby | 1989-11-14 |
| 4844177 | Torque sensing, automatic shut-off and reset clutch for toggle controlled screwdrivers, nutsetters and the like | Richard Drake Robinson, Robert A. Willoughby | 1989-07-04 |