Peter Unsworth
37Patents
19h-index
35Co-inventors
81Inventor score
Filing activity: Jun 6, 1986 → Mar 15, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7539549B1 | Motorized system integrated control and diagnostics using vibration, pressure, temperature, speed, and/or current analysis | Mechanical Engineering; Lighting; Heating | 231 | Expired |
| US7308322B1 | Motorized system integrated control and diagnostics using vibration, pressure, temperature, speed, and/or current analysis | Physics | 96 | Expired |
| US6757665B1 | Detection of pump cavitation/blockage and seal failure via current signature analysis | Emerging Cross-Sectional Technologies | 67 | Expired |
| US5008608A | Controller for starting and stopping electric motors | Electricity | 49 | Expired |
| US6163129A | Method of controlling the starting, stopping and speed of an AC induction motor | Electricity | 41 | Expired |
| US7224557B2 | Method and system of controlling asynchronous contactors for a multi-phase electric load | Electricity | 35 | Expired |
| US7099852B2 | Detection of pump cavitation/blockage and seal failure via current signature analysis | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4800326A | Apparatus and methods for controlling induction motors | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5567994A | Active harmonic filter with time domain analysis | Emerging Cross-Sectional Technologies | 33 | Expired |
| US6640196B1 | System and method for motor fault detection by space vector angular fluctuation | Physics | 30 | Expired |
| US5548197A | Method and apparatus for determining motor speed using zero crossing times | Physics | 30 | Expired |
| US5488281A | Method and apparatus for predicting winding failure using zero crossing times | Physics | 30 | Expired |
| US5153489A | Electric current measurement apparatus for a solid state motor controller | Electricity | 25 | Expired |
| US5565753A | Method and apparatus for current rebalance in induction motor | Electricity | 22 | Expired |
| US5627447A | Method and apparatus for detecting current delay angle from motor terminal voltage | Electricity | 21 | Expired |
| US7812563B2 | Motor starting and switching | Electricity | 20 | Active |
| US4862052A | Method for stopping an electric motor | Electricity | 20 | Expired |
| US8305024B2 | Motor starting and switching | Electricity | 19 | Active |
| US4833386A | Apparatus and method for braking an electric motor | Electricity | 19 | Expired |
| US4767975A | Controller for induction motors | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6636823B1 | Method and apparatus for motor fault diagnosis | Physics | 15 | Expired |
| US7389278B2 | Detection of pump cavitation/blockage and seal failure via current signature analysis | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5473241A | Method and apparatus for RMS measurements in induction motor without sampling | Physics | 9 | Expired |
| US7584432B1 | Interactive display system | Physics | 7 | Expired |
| US8279191B2 | Automatic tool dock | Physics | 7 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.