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| Number | Title | Issue Date |
| 8053945 | Electric motor commutator A commutator 10 for an electric motor comprises a plurality of commutator segments supported by a base. The segments have an electrically conductive body portion 14 and at least one electrically conductive foldable tang 16 provided on the body p... | 11/08/2011 |
| 7859165 | Fuel pump and motor device for the same A fuel pump includes a pump portion for pumping fuel. The fuel pump further includes a magnet having magnetic poles circumferentially alternate with each other. The fuel pump further includes an armature on a radially inside of the magnet. The armature includes a ro... | 12/28/2010 |
| 7777390 | Short-circuit member assembly, commutator, and motor A short-circuit member assembly for short-circuiting a plurality of segments arranged in a circumferential direction is disclosed. The short-circuit member assembly includes first and second short-circuit member groups that are superimposed with each other. The firs... | 08/17/2010 |
| 7560848 | Electrical machine with commutator rotor An electrical machine having at least four exciter poles in the stator and having a commutator rotor, which has a number of slots pole teeth on its circumference that is greater than the number of exciter poles, and having twice as large a number of commutator lamin... | 07/14/2009 |
| 7414345 | Commutator and armature A commutator including a commutator main body having a plurality of commutator pieces and a short-circuit member having a short-circuit conductor for short-circuiting commutator pieces. The short-circuit conductor includes superimposed first and second short-circuit... | 08/19/2008 |
| 7362020 | Commutator housing with an overcurrent protection device A commutator housing for a direct-current motor includes conductive tracks and two Lyre-shaped connectors each inserted in one of the conductive tracks. An overcurrent protection device is inserted in series in the conductive tracks, and electrical connection pins o... | 04/22/2008 |
| 7302867 | Magnetic transducer torque measurement A magnetic transducer element is formed by rotating an integral region of a shaft about an axis in the presence of a magnetic source. An annulus of magnetization results in having its magnetization in the axial direction. The exterior magnetic field emanated by the ... | 12/04/2007 |
| 7294981 | Method of determining the position of the shaft of a drive motor for a roller blind The method of determining the position of the shaft of a direct current motor including an armature powered via brushes and a bar commutator and designed to drive a roller blind includes the following phases: detecting and counting... | 11/13/2007 |
| 7274126 | Motor armature having distributed windings for reducing arcing An armature for a brush commutated electric motor having a distributed coil winding arrangement for reducing brush arcing and electromagnetic interference (EMI). The winding pattern involves winding a first coil into a first pair of slots of the armature. A second c... | 09/25/2007 |
| 7265466 | Electrical motor and fluid pump using the same An electrical motor includes a commutator attached to one side of an armature in an axial direction, and a cover structure member attached to the other side of the armature. The cover structure member includes a cover and plural terminals protruding from an outer pe... | 09/04/2007 |
| 7239063 | Motor having supply brushes A motor has a plurality of excitation coils, a commutator having a plurality of segments, a plurality of supply brushes and a short-circuit line. Each coil is connected to corresponding ones of the segments. The supply brushes include a plurality of supply brushes e... | 07/03/2007 |
| 7239060 | Brush DC motors and AC commutator motor structures with concentrated windings Structures of direct current motors or ac commutator (Universal) motors which use a concentrated winding on the rotor with coils wound around the teeth. The number of commutator segments is higher than the number of rotor teeth. Several coils are wound around the sa... | 07/03/2007 |
| 7199338 | Method and system for applying an isolation layer to a brazed end of a generator armature winding bar A method of forming a brazed joint between an armature bar and a hydraulic header clip including: assembling an end of the armature bar, hydraulic header clip and a substantially phosphorous-free braze material; positioning the assembly of the armature bar, hydrauli... | 04/03/2007 |
| 7194794 | Method for producing electrical machines An electrical machine has a base body provided with conductors fixed in grooves of the base body by a material which limits a groove slot at both sides, and the conductors in the grooves are deformed by a stamping punch introducible through the groove slot into the ... | 03/27/2007 |
| 7157828 | Fuel pump for high torque in compact structure In a fuel pump, four permanent magnets are installed in a housing. An armature is installed inside the permanent magnets rotatably. Six magnetic pole coil portions of the armature are installed in a central core. Each magnetic pole coil portion has a coil core, a bo... | 01/02/2007 |
| 7088028 | Ring cap for use on commutator in miniature electric motor for absorbing electrical noise/sound A rotor assembly for an electric motor, including: a rotor shaft, an armature, wire windings and a commutator, wherein the rotor assembly further includes a ring cap directly connected with the commutator. The ring cap includes chip capacitors soldered on a printed ... | 08/08/2006 |
| 7084546 | Commutator, manufacturing method of commutator, manufacturing apparatus of commutator and commutator plate material A commutator includes a generally cylindrical dielectric body and a plurality of commutator segments arranged along an outer peripheral surface of the dielectric body. Each commutator segment includes a ridge, which extends in a direction generally parallel to an ax... | 08/01/2006 |
| 7057325 | Carbon segment commutator A commutator comprises a plurality of commutator terminals each having a contact part 12 and a separate terminal part 13, first and second supports 10 and 11, respectively, of insulating material for supporting the contact parts and the t... | 06/06/2006 |
| 7042109 | Wind turbine A wind turbine for generating electrical power from wind energy includes a turbine rotor mounted for rotation in wind, and having multiple blades for converting energy in the wind into rotational energy. A generator is coupled with said turbine rotor such that said ... | 05/09/2006 |
| 7009323 | Robust commutator bar anchoring configuration with dove-tailed features A commutator bar (10) includes a body and first and second anchors disposed in spaced relation with each anchor and coupled to a proximal end of the body. A free end of the first anchor (13) extends in a direction towards the proximal end H of the body... | 03/07/2006 |
| 7003867 | Method for winding coils on rotor core A core includes a ring body and a plurality of teeth. The teeth extend radially outward form the outer circumference of the ring body. The core is formed by assembling a first core member and a second core member. Each core member has part of the teeth the number of... | 02/28/2006 |
| 6975054 | Electric motor An electric motor includes a stator which carries permanent magnets, and a rotor which carries electromagnets. A particular arrangement of connecting up the windings of the electromagnets to the distributing collector and the selection of the ratio of stator magnets... | 12/13/2005 |
| 6949859 | Commutator assembly for motor A commutator assembly for a motor has a recessed portion formed to each commutator segment so that coils, which are pressed and deformed by bending the hooks of commutator segments, can be accommodated in the recessed portion. With this arrangement, the commutator a... | 09/27/2005 |
| 6944933 | Manufacturing method of a rotor of small motors Each of the rotor magnetic poles is composed of a winding around a laminated core and each of both ends of each wound wire is connected to a commutator leg part coupled with a tip of a corresponding commutator segment of the commutator unit. Each of the commutator l... | 09/20/2005 |
| 6930429 | Motor armature having distributed windings for reducing arcing An armature for a brush commutated electric motor having a distributed coil winding arrangement for reducing brush arcing and electromagnetic interference (EMI). The winding pattern involves segmenting each coil into first and second subcoil portions with differing ... | 08/16/2005 |
| 6903481 | Commutator for electric motors The commutator has a cylindrical collector (1), disposed on a motor armature shaft, and electrical-contact means (4, 5), which during one rotation of the collector (1) touch at least two each of a plurality of commutator laminations (3) t... | 06/07/2005 |
| 6891304 | Brush DC motors and AC commutator motor structures with concentrated windings Structures of direct current motors or ac commutator (Universal) motors which use a concentrated winding on the rotor with coils wound around the teeth. The number of commutator segments is higher than the number of rotor teeth. Several coils are wound around the sa... | 05/10/2005 |
| 6870296 | Electric motor A miniature PMDC motor has a wound rotor 15 comprising a rotor core 16 and a commutator 17 mounted on a shaft 14. A cooling fan 20 is directly mounted onto the commutator 17 by use of a mechanical snap-fit type connection. P... | 03/22/2005 |
| 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 |
| 6841914 | Motor with brush and commutator, and electric apparatus using the same motor An arc length in contact with a commutator of two brushes in a rotational direction of a motor is defined as not more than 5% of an outer rim length or circumference of the commutator, i.e., not more than πA/2O, where A is an outside diameter of the commutator. A n... | 01/11/2005 |
| 6838801 | Rectifying structure and rotary machine employing the same A low-friction and low-vibration rectifying structure including an electrode-segment forming member of a stator which has two electrode segments disposed therein. An annular stator-side groove is formed in the electrode-segment forming member with two electrode segm... | 01/04/2005 |
| 6822365 | Small brush motor A small brush motor which uses a three-electrode varistor and which suppresses disconnection or short-circuits of crossover wires of coils. Each phase coil of the three-phase coil of an armature uses three risers and two salient poles, each phase coil having a zigza... | 11/23/2004 |
| 6800980 | Multi-pole commutator motor comprising bridge conductors The invention relates to a multipole commutator motor (14) having at least four stator poles (16-19) and having armature coils (31-42) that work together with these stator poles and that, for the supply of power, are each connected electrically ... | 10/05/2004 |
| 6789306 | Method for producing a flat commutator and a commutator produced according to this method A method for producing a flat commutator includes forming a metallic supporting body with segment supporting parts and forming a hub of an electrically insulating material. The supporting body is connected in an electrically conductive and mechanically fixed manner ... | 09/14/2004 |
| 6774526 | 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... | 08/10/2004 |
| 6756717 | Motor A motor includes a commutator, which has twenty-four segments. Each of eight short-circuit members is connected to three of the segments. Each short-circuit member extends in an arcuate form in an angular range corresponding to arranging positions of three segments ... | 06/29/2004 |
| 6734588 | Sectioned conductor and related methods for accommodating stress and avoiding internal deformations in power generator A sectioned conductor adapted to accommodate stress forces with reduced internal deformation while forming a conductive path between the rotor coils and a radial stud extending into the rotor shaft of a power generator is provided along with related methods. The sec... | 05/11/2004 |
| 6731041 | Rotor for small motors and manufacturing method therefor Each of the rotor magnetic poles is composed of a winding around a laminated core and each of both ends of each wound wire is connected to a commutator leg part coupled with a tip of a corresponding commutator segment of the commutator unit. Each of the commutator l... | 05/04/2004 |
| 6713931 | Cylindrical commutator securely fixed to mold resin A cylindrical commutator is provided with a plurality of segments arranged at equal intervals around an axis, each of which is provided with a groove on an inner surface thereof and one or more anchors extending from edges of the groove. The grooves and the anchors ... | 03/30/2004 |
| 6707218 | Rotor for small motors and manufacturing method therefor The leading end of a wire to be wound fed from a coil winder is wound around one of commutator leg parts a prescribed number of turns and then wound around a corresponding salient pole. After that, it is similarly wound successively around other commutator leg parts... | 03/16/2004 |
