Jeffrey Hemphill
68Patents
6h-index
51Co-inventors
75Inventor score
Filing activity: Jun 1, 1993 → Sep 1, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US10106087B2 | Detachable workpiece support apparatus for a tailgate step | Performing Operations; Transporting | 45 | Active |
| US9587559B2 | Accessories drive system including a transmission driven motor generator unit | Emerging Cross-Sectional Technologies | 22 | Active |
| US5329897A | Rotary valve with seal for internal combustion engine | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US7823711B2 | Dual clutch pack dual operating clutch and method for adjusting same | Emerging Cross-Sectional Technologies | 10 | Active |
| US7485066B2 | Geared torque converter with multi-plate clutches and planetary gearset | Mechanical Engineering; Lighting; Heating | 9 | Active |
| US7997159B2 | Gear selection assembly with nested differentially rotatable tube | Emerging Cross-Sectional Technologies | 7 | Active |
| US7770707B2 | Axially engaging and disengaging one-way clutch and a stator having an axially engaging and disengaging one-way clutch | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US8607948B2 | Fluid coupling launch device | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US7849990B2 | One-way clutch with dampening | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US9933023B2 | Disconnect clutch with dual one-way clutches and solenoid actuator for a wedge one-way clutch | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US9593724B2 | Integrated piston bearing | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US9016454B2 | Two stage piston for faster clutch apply | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US7987958B2 | Wedge one-way clutch | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8813937B2 | Clutch pack travel compensator for reduced drag | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US9447726B2 | Accessory devices drive system | Emerging Cross-Sectional Technologies | 3 | Active |
| US7955207B2 | Torque converter with planetary gear set | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US9121456B2 | One-way clutch carrier assembly | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US9151333B2 | Gap-filling clutch with ramps | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US7762917B2 | Torque-filling power transfer assembly for a manual transmission | Emerging Cross-Sectional Technologies | 2 | Active |
| US7566286B2 | Power shift gear for motor vehicles, a motor vehicle gear as well as a motor vehicle power train | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US9422837B2 | Camshaft phaser with two one-way wedge clutches | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US9718354B2 | Disconnect system for an all-wheel drive vehicle drive train | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8931439B2 | Module for controlling coolant valve and grille shutter | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US10514035B2 | Integrated eccentric motor and pump | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US9500260B2 | Harmonic balancer with reduced axial length | Emerging Cross-Sectional Technologies | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.