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| Number | Title | Issue Date |
| 7358698 | Field-winding type of synchronous machine A field-winding type of synchronous machine comprises a stator with an armature winding wound phase by phase, a rotor having a rotor core with a field winding wound, and a circuit enabling an armature current to pass the armature winding, the armature current corres... | 04/15/2008 |
| 7183668 | Generator with current and voltage abnormality detection A detecting means easily detects the abnormality of a generator having a plurality of power supply units. Each of the power supply units includes one of a plurality of output windings L1 to L4, which are wound independently of each other around single ... | 02/27/2007 |
| 6592620 | Power system for an implantable heart pump A power system for an implantable heart pump is provided. The system includes two batteries, a microprocessor controller, two motor drivers, a multiplexer, two stators and a TET coil. During normal operation, only one battery and one motor driver are in u... | 07/15/2003 |
| 6388356 | Methods and apparatus for controlling electromagnetic flux in dynamoelectric machines A method of adjusting speed and torque of a dynamoelectric machine is disclosed. The machine includes a main winding, and a divided winding each configured to generate a plurality of poles. The method includes the steps of energizing the main winding and ... | 05/14/2002 |
| 6133702 | Multi-function vehicle starter and alternator and method therefor A multi-function apparatus and a method for performing the functions of a starter, alternator and engine stabilization system for an engine of a motor vehicle. The apparatus comprises a rotor, a stator and a switching/detection system associated with the ... | 10/17/2000 |
| 5453673 | DC motor with auxiliary exciting power supply for switching-on series (or compound) start of shunt normal operation according to the load A motor control circuit includes a series motor made up of a series field winding serially connected with an armature or a compound motor having both a series field winding and a shunt field winding. The series field winding is parallel connected to an au... | 09/26/1995 |
| 5408166 | Dynamic current feedback magnetizing type series or compound DC motor-generator control circuit Dynamic current feedback for a main motor-generator is provided by an auxiliary generator which supplies power directly to the main excitation field winding of the main motor-generator, rather than to an auxiliary shunt field winding as in a prior design,... | 04/18/1995 |
| 5408165 | Device comprising a multiphase load, a static converter and inductance coils The device comprises inductance coils (6) which are each allocated to one phase and which are wound around a common magnetic core in the same direction and with the same number of windings. One each of the inductance coils (6) is connected to one each of ... | 04/18/1995 |
| 5204596 | Device having a multiphase load, a static converter and inductance coils A device having inductance coils which are each allocated to one phase and which are wound around a common magnetic core in the same direction and with the same number of windings. One of each of the inductance coils is connected to one of each of the pha... | 04/20/1993 |
| 4806834 | Electrical circuit for inductance conductors, transformers and motors An electrical circuit for inductance conductors, transformers and motors is provided wherein two coils of electrically conductive wire are coiled about a bar of magnetizable material such that they are disposed in mirror image symmetrical relation with ea... | 02/21/1989 |
| 4410844 | Sliding door actuating mechanism An actuating mechanism for sliding doors is intended to be installed in a van. A winch (44) is mounted inside of the van. A guide assembly (50) is installed in an aperture in the door frame. A cable (52) is connected to an arm added to the latch operating... | 10/18/1983 |
| 4385266 | Field weakening system for pulse-controlled three-terminal d.c. motor A pulse control circuit for a d.c. series motor having an armature and two oppositely-wound field windings, comprises two semiconductor static switching devices, such as thyristors, each connected in series with the armature and a respective one of the fi... | 05/24/1983 |
| 4370603 | Shunt field control apparatus and method A field shunt operation for a chopper controlled series DC propulsion motor in the power mode is provided in response to a desired torque request, when a predicted value of the resulting shunt field motor current is determined to be no greater than the kn... | 01/25/1983 |
| 4217529 | Propulsion system for electrical vehicle A propulsion system for an electric vehicle in which a chopper is used to provide controlled DC power to a separately excited DC propulsion motor. In order to provide increased torque for comparatively short intervals to meet on-the-road requirements, the... | 08/12/1980 |
| 4044286 | Control circuit for hospital bed Beds, such as hospital beds, in which at least some portion of the bed is movably actuated by an electric motor (or motors) are provided with a control circuit to determine proper energization of the motor from an AC power source. Since the AC signal from... | 08/23/1977 |
