Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10286787 | System and method for all electrical operation of a mining haul truck | — | 2019-05-14 |
| 9272677 | System and method for providing auxiliary power by regeneration power management in mobile mining equipment | — | 2016-03-01 |
| 8847524 | Dissipation of the braking energy of electrically powered mining equipment by liquid-cooled braking resistors | — | 2014-09-30 |
| 8803468 | System and method for fast discharge of a ring motor field | — | 2014-08-12 |
| 8698437 | System and method for providing auxiliary power by regeneration power management in mobile mining equipment | — | 2014-04-15 |
| 8550008 | System and method for reinjection of retard energy in a trolley-based electric mining haul truck | Walter Koellner | 2013-10-08 |
| 8550007 | System and method for reinjection of retard energy in a trolley-based electric mining haul truck | Walter Köllner | 2013-10-08 |
| 8536814 | Limiting peak electrical power drawn by mining excavators | Walter Köllner, Andreas Holweck, Michael G. Onsager, Ekkehard Pittius | 2013-09-17 |
| 8499909 | Peak demand reduction in mining haul trucks utilizing an on-board energy storage system | Walter Köllner | 2013-08-06 |
| 8466636 | Excavator drive system with bi state motor transfer switches | — | 2013-06-18 |
| 8174225 | Limiting peak electrical power drawn by mining excavators | Walter Köllner, Andreas Holweck, Michael G. Onsager, Ekkehard Pittius | 2012-05-08 |
| 7832126 | Systems, devices, and/or methods regarding excavating | Walter Koellner, Daniel W. Robertson, Ken Furem | 2010-11-16 |
| 7720620 | System and method for determining harmonic contributions from non-linear loads without disconnecting any load | Ronald G. Harley, Deepakraj M. Divan, Franklin Lambert | 2010-05-18 |
| 7013227 | System and method for determining harmonic contributions from non-linear loads | Ronald G. Harley, Thomas G. Habelter, Franklin Lambert | 2006-03-14 |