Eric G. Smith
36Patents
11h-index
44Co-inventors
75Inventor score
Filing activity: Jun 2, 1980 → Feb 22, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5701974A | Railway hand brake apparatus with visual condition indicator | Performing Operations; Transporting | 31 | Expired |
| USD295430S | Combined toy helicopter and ceiling fan | General | 27 | Expired |
| US5738416A | Railway braking apparatus to effect a change in a handbrake | Performing Operations; Transporting | 24 | Expired |
| US8661268B2 | Methods and apparatus for intelligently providing power to a device | Physics | 18 | Active |
| US4467605A | Hydro-pneumatic actuator with automatic slack adjuster | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4361078A | Hydraulic brake actuator having spring-applied back-up brake with manual release means | Performing Operations; Transporting | 15 | Expired |
| US5549363A | Railway braking apparatus | Performing Operations; Transporting | 15 | Expired |
| US4733602A | Hydraulic brake actuator with parking brake | Performing Operations; Transporting | 14 | Expired |
| US5586812A | Railway braking apparatus | Performing Operations; Transporting | 13 | Expired |
| US5559281A | Test connector for accessing compressed air at test ports of a railroad brake control valve | Performing Operations; Transporting | 12 | Expired |
| US5558411A | Railway braking apparatus | Performing Operations; Transporting | 12 | Expired |
| US4319671A | Hydro-pneumatic brake actuator arranged to maintain a constant brake shoe clearance | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5586813A | Electro-pneumatic freight brake control system | Performing Operations; Transporting | 9 | Expired |
| US4619348A | Combined hydropneumatic brake cylinder/air reservoir device with automatic double-acting slack adjuster arrangement | Performing Operations; Transporting | 8 | Expired |
| US5558412A | Railway braking apparatus | Performing Operations; Transporting | 7 | Expired |
| US5669674A | Electro-pneumatic freight brake control system | Performing Operations; Transporting | 7 | Expired |
| US7772818B2 | Method and apparatus for measuring an average output current of a switching regulator using current-sensing-circuitry | Physics | 7 | Active |
| US5558410A | Railway braking apparatus | Performing Operations; Transporting | 5 | Expired |
| US9086737B2 | Dynamically controlled keyboard | Electricity | 5 | Active |
| US8836287B2 | Time-domain multiplexing of power and data | Physics | 4 | Active |
| US9454196B2 | Active peak power management of a high performance embedded microprocessor cluster | Electricity | 3 | Active |
| US8610411B2 | High-voltage regulated power supply | Electricity | 2 | Active |
| US5593214A | Railway parking braking apparatus | Performing Operations; Transporting | 2 | Expired |
| US9590519B2 | Power adapter with a step-down transformer and a voltage step-up circuit | Emerging Cross-Sectional Technologies | 1 | Active |
| US9658634B2 | Under voltage detection and performance throttling | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.