Thomas M. McHugh
21Patents
11h-index
16Co-inventors
68Inventor score
Filing activity: Nov 14, 1983 → Dec 31, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4463729A | Method and apparatus for controlling fuel injection timing in a compression ignition engine | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4760830A | Method and apparatus for controlling fuel injection timing in a compression ignition engine | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5651428A | Stationary actuator moving vane elevator car door coupling | Performing Operations; Transporting | 18 | Expired |
| US5732796A | Elevator car evacuation deterrent device | Performing Operations; Transporting | 17 | Expired |
| US5651427A | Elevator door coupling and hold-close apparatus | Performing Operations; Transporting | 15 | Expired |
| US5538106A | Rotationally stiff elevator car door coupling | Performing Operations; Transporting | 14 | Expired |
| US5736693A | Elevator door drive using dual secondary linear induction motor | Fixed Constructions | 14 | Expired |
| US5509504A | Velocity regulated, open current loop, variable voltage, variable frequency, linear induction motor drive for an elevator car door | Physics | 12 | Expired |
| US5612518A | Linear induction motor door drive assembly for elevators | Performing Operations; Transporting | 11 | Expired |
| US5503248A | Maintaining open loop current drive to linear induction motor | Fixed Constructions | 11 | Expired |
| US5487449A | Magnetic elevator door coupling | Performing Operations; Transporting | 11 | Expired |
| US5495918A | Smooth and quiet linear induction motor elevator door operation | Performing Operations; Transporting | 10 | Expired |
| US5668355A | Elevator cab door drive system | Performing Operations; Transporting | 10 | Expired |
| US5454447A | Elevator hoistway door bolt lock | Performing Operations; Transporting | 10 | Expired |
| US5808246A | Triac drive for three-phase line-powered linear induction motor elevator door operator | Electricity | 8 | Expired |
| US5669465A | Elevator hoistway door bolt lock | Performing Operations; Transporting | 5 | Expired |
| US5682023A | Time-optimal control of an AC line-driven linear motor elevator door operator | Physics | 5 | Expired |
| US5494137A | Elevator door mounting system | Fixed Constructions | 3 | Expired |
| US5485896A | Rotary elevator car door coupling | Performing Operations; Transporting | 3 | Expired |
| US5435415A | Cammed wedge elevator car door coupling | Performing Operations; Transporting | 2 | Expired |
| US5880414A | Elevator door brake, brake, lock, and hold-open | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.