John D. Zalewski
29Patents
11h-index
35Co-inventors
75Inventor score
Filing activity: Nov 20, 1990 → May 4, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5655986A | Full-time transfer case with synchronized single planetary gear reduction unit | Mechanical Engineering; Lighting; Heating | 66 | Expired |
| US5704863A | Two-speed transfer case with on-demand torque control having a coupling pump and a supply pump | Mechanical Engineering; Lighting; Heating | 61 | Expired |
| US6595338B2 | Torque transfer clutch with linear piston hydraulic clutch actuator | Mechanical Engineering; Lighting; Heating | 44 | Expired |
| US5853342A | Offset transfer case | Performing Operations; Transporting | 27 | Expired |
| US5725453A | On-demand double offset transfer case | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5599249A | Part-time double offset transfer case | Performing Operations; Transporting | 24 | Expired |
| US8316738B2 | Compact transfer case with beveloid gearset | Emerging Cross-Sectional Technologies | 20 | Active |
| US5609540A | Full-time double offset transfer case | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US5214975A | Transmission vibration damping | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5695022A | Double offset transfer case with electronically-controlled torque modulation | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US5311787A | Power take-off adaptor | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US7097019B2 | Low power modulating clutch control system with electromagnetic actuator | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US7182194B2 | Low power modulating clutch control system with combination accumulator and piston actuator | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US6883657B2 | Power transfer device with hydraulic clutch actuation | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US7650808B2 | Sprial cam clutch actuation system for two-speed transfer case | Emerging Cross-Sectional Technologies | 7 | Active |
| US7506740B2 | Power transmission device with clutch control system | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US7588133B2 | Clutch control system for power transmission devices | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US7178654B2 | Low power modulating clutch control system | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US7895913B2 | Spiral cam clutch actuation system | Emerging Cross-Sectional Technologies | 3 | Active |
| US5634863A | Drop box with angled input shaft | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7445100B2 | Low power modulating clutch control system | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US6675677B2 | Transfer case with multi-gear transfer mechanism | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8079928B2 | Transfer case with overdrive mode | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US6931964B2 | Transfer case with multi-gear transfer mechanism | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8165767B2 | Traction control system for 4WD/AWD vehicles | Performing Operations; Transporting | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.