Issued Patents All Time
Showing 76–100 of 104 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6323573 | High-efficiency inductor-alternator | — | 2001-11-27 |
| 6255743 | Method and apparatus for providing an uninterruptible supply of electric power to a critical load | David B. Clifton | 2001-07-03 |
| 6236123 | Generator providing alternating current which has a selected frequency | — | 2001-05-22 |
| 6192687 | Uninterruptible power supply utilizing thermal energy source | David B. Clifton | 2001-02-27 |
| 6166472 | Airgap armature coils and electric machines using same | Scott R. Little | 2000-12-26 |
| 6124702 | Step switch cycloconverter utilizing multi-tap armature | David B. Clifton | 2000-09-26 |
| 6118202 | High-efficiency inductor-alternator | — | 2000-09-12 |
| 6087753 | High-efficiency inductor-alternator | — | 2000-07-11 |
| 6029538 | Replaceable bearing cartridge assembly for flywheel energy system | Scott R. Little | 2000-02-29 |
| 5980193 | Magnetically levitated robot and method of increasing levitation force | David B. Clifton | 1999-11-09 |
| 5969457 | Energy storage flywheel apparatus and methods | David B. Clifton | 1999-10-19 |
| 5955816 | Energy storage flywheel apparatus and methods | David B. Clifton | 1999-09-21 |
| 5932935 | Energy storage flywheel emergency power source and methods | David B. Clifton, James A. Andrews, Scott R. Little | 1999-08-03 |
| 5929548 | High inertia inductor-alternator | David B. Clifton | 1999-07-27 |
| 5920138 | Motor/generator and axial magnetic bearing utilizing common magnetic circuit | David B. Clifton, James A. Andrews, Scott R. Little | 1999-07-06 |
| 5905321 | Energy storage flywheel apparatus and methods | David B. Clifton, James A. Andrews, Scott R. Little | 1999-05-18 |
| 5874797 | Permanent magnet generator providing alternating current which has a selected frequency | — | 1999-02-23 |
| 5864198 | Brushless generator | — | 1999-01-26 |
| 5767591 | Method and apparatus for providing startup power to a genset-backed uninterruptible power supply | — | 1998-06-16 |
| 5731645 | Integrated motor/generator/flywheel utilizing a solid steel rotor | David B. Clifton, James A. Andrews, Scott R. Little | 1998-03-24 |
| 5572079 | Magnetic bearing utilizing brushless generator | — | 1996-11-05 |
| 5525848 | Magnetic bearing system including a generator | David B. Clifton | 1996-06-11 |
| 5508573 | Magnetic bearing with phase-shifted loops | James A. Andrews | 1996-04-16 |
| 5471105 | Null flux magnetic bearing with cross-connected loop portions | David B. Clifton, Scott R. Little | 1995-11-28 |
| 5469006 | Lorentz force magnetic bearing utilizing closed conductive loops and selectively controlled electromagnets | — | 1995-11-21 |