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| Number | Title | Issue Date |
| 7348754 | Motion control using electromagnetic forces An apparatus has (a) a first component having one or more electromagnetic elements and (b) a second component having one or more electromagnetic elements and movably coupled to the first component. The second component moves with respect to the first component in a ... | 03/25/2008 |
| 6853108 | Rotor for small-sized motor and method of manufacturing same A rotor for a small-sized motor has a plurality of rotor magnetic poles and a commutator on a rotor shaft, and both ends of a wire of each winding of the rotor magnetic poles are tied up with and connected by spot welding to a U-shaped hook-type commutator leg conne... | 02/08/2005 |
| 6777835 | Electrical power cooling technique The apparatus for cooling a high power electrical transformer and electrical motors uses thermally conductive material interleaved between the turn layers of a high power transformer and iron core laminates to provide a low resistant thermal path to ambient. The str... | 08/17/2004 |
| 6674212 | Current-carrying member for a direct-current motor in a fuel pump, method for producing the same, and fuel pump A sulfidation-resistant current-carrying member, such as a commutator, suitable for a direct-current motor in a fuel pump is provided. The current-carrying member for a direct-current motor in a fuel pump includes a commutator composed of a carbon layer h... | 01/06/2004 |
| 6218757 | Minimizing shaft currents in dynamoelectric machines Some dynamoelectric machines develop shaft E.M.F.'s during operation which lead to circulation currents in the shaft of the machine. The shaft current will attempt to flow through the bearings of the machine, unless some action is taken to prevent or limi... | 04/17/2001 |
| 6097129 | Electronically commutated motor An electronically commutated external rotor motor has an external rotor having a cup-shaped housing and a radially magnetized permanent magnet connected in the cup-shaped housing. An interior stator is positioned in the cup-shaped housing. The interior st... | 08/01/2000 |
| 6037693 | Commutator motor A commutator motor has at least two supply terminals; a metallic pole tube, and an interference suppressing device, the pole tube being formed as a part of the interference suppressing device.... | 03/14/2000 |
| 4406962 | Commutator electric machine The disclosed commutator electric machine comprises a field magnet structure electromagnetically connected with the armature having a winding; a commutator including main bars and at least one auxiliary bar for each main bar interconnected by an interbar ... | 09/27/1983 |
| 4388547 | Current generator A high current, low voltage generator is constructed of four pairs of rotatably mounted magnetic pole members. The pairs of magnetic pole members are disposed longitudinally along and at angular intervals around a cylindrical air gap region. The angular i... | 06/14/1983 |
| 4283651 | Switching circuit for high current brushes in a dynamoelectric machine A switching circuit electrically connected to a brush and collector bar of a DC dynamoelectric machine utilizing a high current rectifier and a source of electromotive source which produces a current in the circuit which is generally equal to the current ... | 08/11/1981 |
