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| Number | Title | Issue Date |
| 7248004 | Cooling fan, in particular for motor vehicles A radiator blower, in particular for motor vehicles, is indicated that comprises a plurality of individual fans (11, 12), each having an electrical drive motor (13, 14), and a plurality of switches (S1, S2, S3), each capable of bei... | 07/24/2007 |
| 7102305 | Apparatus and method for controlling motor A motor control apparatus includes a direct-current power source and an inverter circuit, which includes a switching element. The motor control apparatus receives a current command value in every control cycle and calculates a current deviation accumulated value by ... | 09/05/2006 |
| 6812657 | Motor control for two motors A load in an electrical apparatus is driven by two motors M1, M2. Switching means (R1, R2) switches the motors M1, M2 between: a series configuration, in which the motors M1, M2 are connected in series across a... | 11/02/2004 |
| 4453111 | Electric drive for submarines A direct current electric motor marine propulsion system is provided with a pair of shunt wound direct current electric motors which are alternatively connected in a series/parallel circuit configuration. A forward biased diode between the motors in the s... | 06/05/1984 |
| 4393338 | Vehicle propulsion motor control apparatus A solid-state direct current motor control apparatus including a programmed microprocessor operative with a plurality of series motors to determine the selection of a power mode of operation, a brake mode of operation and a coast mode of operation, with a... | 07/12/1983 |
