Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9882518 | Auxiliary winding for a generator | — | 2018-01-30 |
| RE44084 | Control system for stand-by electrical generator | Robert D. Kern, Steven J. Wilcox, Gerald C. Ruehlow, Frank Wedel, Phillip Harrison +1 more | 2013-03-19 |
| 8294431 | Method of controlling a variable speed constant frequency generator | David William Pollock, Francis X. Wedel | 2012-10-23 |
| 6863034 | Method of controlling a bi-fuel generator set | Robert D. Kern, Gerald C. Ruehlow, Steven J. Wilcox, Francis X. Wedel, Phillip Harrison +3 more | 2005-03-08 |
| 6657416 | Control system for stand-by electrical generator | Robert D. Kern, Gerald C. Ruehlow, Steven J. Wilcox, Francis X. Wedel, Phillip Harrison +1 more | 2003-12-02 |
| 6653821 | System controller and method for monitoring and controlling a plurality of generator sets | Robert D. Kern, Gerald C. Ruehlow, Steven J. Wilcox, Francis X. Wedel, Phillip Harrison +1 more | 2003-11-25 |
| 5861604 | Arc welder and method providing use-enhancing features | Jeffery J. Jonas, Robert D. Kern, Gerald C. Ruehlow, Francis X. Wedel | 1999-01-19 |
| 5831366 | Permanent magnet alternator | Robert D. Kern, Gerald C. Ruehlow, Frank Wedel, Dennis J. Cerney | 1998-11-03 |
| 5537025 | Battery charger/pre-exciter for engine-driven generator | Robert D. Kern, Gerald C. Ruehlow, Frank Wedel | 1996-07-16 |
| 5504417 | Engine-driven generator | Robert D. Kern, Gerald C. Ruehlow, Herb Hoenisch, Mark J. Sarder, Michael R. Wheeley +2 more | 1996-04-02 |
| 5489811 | Permanent magnet alternator | Robert D. Kern, Gerald C. Ruehlow, Frank Wedel, Dennis J. Cerney | 1996-02-06 |
| 5376877 | Engine-driven generator | Robert D. Kern, Gerald C. Ruehlow, Michael R. Wheeley, Frank Wedel, Mark Kastner | 1994-12-27 |
| 4445081 | Leading power factor induction motor device | Gabor Kalman | 1984-04-24 |
| 4237396 | Electromagnetic machines with permanent magnet excitation | Philip T. Blenkinsop, David Turner | 1980-12-02 |