Richard N. Fargo
94Patents
12h-index
116Co-inventors
87Inventor score
Filing activity: Feb 1, 1985 → Aug 16, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4582294A | Three-way solenoid valve | Emerging Cross-Sectional Technologies | 46 | Expired |
| US6196355A | Elevator rescue system | Performing Operations; Transporting | 34 | Expired |
| US4624282A | Two-stage solenoid valve | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6269910A | Elevator rescue system | Performing Operations; Transporting | 22 | Expired |
| US6540060B1 | Belt drive assembly for a passenger conveyor | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US5101930A | Hydraulic elevator muffler | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US6672013B1 | Method of installing elevator rails | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6450316B1 | Escalator with step flange | Performing Operations; Transporting | 13 | Expired |
| US5635689A | Acceleration damping of elevator resonant modes and hydraulic elevator pump leakage compensation | Performing Operations; Transporting | 13 | Expired |
| US5859395A | Method for generating velocity profiles for elevator car doors | Physics | 13 | Expired |
| US6450317B1 | Escalator drive machine | Performing Operations; Transporting | 12 | Expired |
| US8151950B2 | Permanent magnet elevator disk brake | Mechanical Engineering; Lighting; Heating | 12 | Active |
| US5014824A | Hydraulic elevator control valve | Performing Operations; Transporting | 12 | Expired |
| US9663327B2 | Elevator braking system | Performing Operations; Transporting | 11 | Active |
| US6345695B1 | Elevator system with counter-rotating drive sheaves | Electricity | 11 | Expired |
| US6640957B2 | Racetrack style passenger conveyor | Performing Operations; Transporting | 11 | Expired |
| US6685004B2 | Escalator drive machine | Performing Operations; Transporting | 10 | Expired |
| US9423369B2 | Resistance-based monitoring system and method | Performing Operations; Transporting | 10 | Active |
| US8307952B2 | Elevator system with multiple cars in a hoistway | Performing Operations; Transporting | 9 | Active |
| US5082091A | Hydraulic elevator control | Performing Operations; Transporting | 9 | Expired |
| US5289901A | Hydraulic elevator pressure relief valve | Performing Operations; Transporting | 9 | Expired |
| US6186281A | Remote storage and reset of elevator overspeed switch | Performing Operations; Transporting | 9 | Expired |
| US5804779A | Method for generating and scaling velocity profiles for elevator car doors | Physics | 8 | Expired |
| US9038783B2 | Rope sway mitigation via rope tension adjustment | Performing Operations; Transporting | 8 | Active |
| US8087497B2 | Compensation in an elevator system having multiple cars within a single hoistway | Performing Operations; Transporting | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.