| 7701077 |
Secondary power for critical loads for railroad |
Jeffrey Louis Daigle, Ajith Kuttannair Kumar |
2010-04-20 |
| 5483436 |
Gate drive power supply operable from a source of unregulated DC electric power |
Philip R. Cooke, Donald D. Bock |
1996-01-09 |
| 5331261 |
Regenerative braking protection for an electrically-propelled traction vehicle |
Ronald F. Griebel, Ajith Kuttannair Kumar, Stuart W. McElhenny, Dean S. Grinch |
1994-07-19 |
| 5262691 |
Gate turnoff thyristor control circuit with shorted gate detection |
Ronald B. Bailey |
1993-11-16 |
| 5245495 |
Automatic flashover protection for locomotive traction motors |
Ronald B. Bailey, Myron L. Smith, Edgar T. Balch, Roger Huczko, Joseph A. Laukaitis |
1993-09-14 |
| 5168416 |
Automatic flashover protection for locomotive traction motors |
Ronald B. Bailey, Myron L. Smith, Edgar T. Balch, Roger Huczko, Joseph A. Laukaitis |
1992-12-01 |
| 4791341 |
Speed reducing control system for a polyphase electric motor |
Thomas D. Stitt |
1988-12-13 |
| 4524316 |
Speed reducing control system with voltage regulation for a polyphase electric motor |
Thomas D. Stitt |
1985-06-18 |
| 4471421 |
Means for controlling a forced commutated hybrid a-c to d-c electric rectifying bridge to avoid reverse recovery overvoltage in the diode leg |
Ivan Horvat, Ajith Kuttannair Kumar |
1984-09-11 |
| 4467408 |
Means for controlling a forced commutated ac-to-dc electric rectifying circuit to avoid commutation failure |
Edward S. Matulevich, Ajith Kuttannair Kumar |
1984-08-21 |
