Dan J. Showalter
55Patents
22h-index
29Co-inventors
88Inventor score
Filing activity: Jan 24, 1977 → Aug 12, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5407024A | On demand vehicle drive system | Mechanical Engineering; Lighting; Heating | 173 | Expired |
| US5992592A | Bi-directional overrunning clutch assembly for transfer cases and the like | Mechanical Engineering; Lighting; Heating | 76 | Expired |
| US5833566A | Speed reduction assembly with full disconnect for transfer cases and the like | Performing Operations; Transporting | 59 | Expired |
| US5699888A | Modulating clutch having passive torque throughout threshold | Emerging Cross-Sectional Technologies | 58 | Expired |
| US6062361A | Acceleration sensitive double overrunning clutch | Emerging Cross-Sectional Technologies | 48 | Expired |
| US6263995A | On demand vehicle drive system | Mechanical Engineering; Lighting; Heating | 45 | Expired |
| US5771477A | Method and apparatus for synchronizing low to high transfer case shifts | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US5980415A | Adaptive transfer case with EM clutch and dog clutch for 4WD lock up | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| US6105702A | Adaptive vehicle drive method for extreme operating conditions | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US6230577A | Electric shift control assembly | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5690002A | Method of operating a vehicle differential | Emerging Cross-Sectional Technologies | 31 | Expired |
| US5609219A | On demand vehicle drive system | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US5499951A | Dynamic range shift transfer case with electromagnetic clutch for coupling one output to the input for modulating torque split | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5884738A | Clutch assembly having reaction force circuit | Emerging Cross-Sectional Technologies | 26 | Expired |
| US8500590B2 | Electromagnetic clutch disconnect for accessory drive | Mechanical Engineering; Lighting; Heating | 26 | Active |
| US5878624A | Single rail shift operator assembly | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6327935A | Dual clutch rear axle and method of operation | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6062330A | On demand vehicle drive system | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6691845B2 | Ball ramp clutch having force amplifying configuration | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US5520590A | Transfer case for four wheel drive vehicles | Performing Operations; Transporting | 23 | Expired |
| US5704444A | Adaptive vehicle drive system for extreme operating conditioning | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US5485894A | On demand vehicle drive system | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US6631779B2 | On demand vehicle drive system | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US5409429A | Transfer case for four wheel drive vehicles | Performing Operations; Transporting | 20 | Expired |
| US5718653A | Differential assembly for transfer cases and vehicle drivelines | Mechanical Engineering; Lighting; Heating | 20 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.