Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8810349 | Power input device with current pulse multiplier transformer to reduce harmonic currents in converter/inverter circuits and devices, and method of making the same | — | 2014-08-19 |
| 8159841 | Low harmonic rectifier circuit | — | 2012-04-17 |
| 8075414 | Cue stick and cue stick handle with rigid forearm and method of making the same | Eldon Royce Bunnell | 2011-12-13 |
| 8075415 | Cue stick and cue stick handle with rigid inner core and method of making the same | Eldon Royce Bunnell | 2011-12-13 |
| 7990242 | Transient voltage and harmonic currents quashing (THQ) transformers, transformer winding topology, and method of making the same | — | 2011-08-02 |
| RE41814 | Method and apparatus for providing selectable output voltages | — | 2010-10-12 |
| 7507164 | Cue stick and method of making same | — | 2009-03-24 |
| 7112946 | Transformer with selectable input to output phase angle relationship | — | 2006-09-26 |
| 7049921 | Auto-transformer for use with multiple pulse rectifiers | — | 2006-05-23 |
| 6787704 | Method and apparatus for increasing the rating of a transformer | — | 2004-09-07 |
| 6734772 | Method and apparatus for providing selectable output voltages | — | 2004-05-11 |
| 6169674 | Transformer, system and method to control harmonic distortion | — | 2001-01-02 |
| 5731971 | Apparatus for providing multiple, phase-shifted power outputs | — | 1998-03-24 |
| 5635674 | Sealed passage for electrical leads across a barrier | — | 1997-06-03 |
| 5500582 | Multiphase load control system with switch connected split sources of phase voltage | — | 1996-03-19 |
| 5449991 | Motor control system and apparatus for providing desired three-phase voltage therein using a main transformer energized through an autotransformer | — | 1995-09-12 |
| 5322971 | Motor control system and components thereof | — | 1994-06-21 |
| 5216356 | Shielded three phase transformer with tertiary winding | — | 1993-06-01 |
| 5131156 | Leveling apparatus and method | — | 1992-07-21 |
| 5130628 | Transformer providing two multiple phase outputs out of phase with each other, and pumping system using the same | — | 1992-07-14 |
| 5130616 | Motor control system and components thereof | — | 1992-07-14 |
| 5079499 | Transformer providing two multiple phase outputs out of phase with each other, and pumping system using the same | — | 1992-01-07 |
| 5071097 | Adjustment apparatus and method | — | 1991-12-10 |
| 5005100 | Transient-filtered transformer | — | 1991-04-02 |
| 4868481 | Apparatus and method for balancing electrical currents in a multiple-phase system | — | 1989-09-19 |