Class / Patent application number | Description | Number of patent applications / Date published |
310248000 | Brushes | 27 |
20090033172 | BRUSH MANUFACTURING METHOD, MOTOR MANUFACTURING METHOD, BRUSH, MOTOR, AND ELECTROMOTIVE POWER STEERING DEVICE - A manufacturing method for a brush that can reduce contact surface area between a commutator and the brush, thereby reducing frictional noise, is provided. Specifically, a method to manufacture a brush, which provides one surface with contact surfaces that make sliding contact with the commutator, involves a step to mold a molded body and a step to cut the molded body. In the molding process, carbon powder containing copper powder is sintered to form a molded body having a groove on the top surface along the direction of the axis of rotation of the commutator, and curved surface margins in the margins of the top surface in the direction of the axis of rotation. In the cutting step, the central part of the top surface of the molded body is cut by a grinding stone along the cutting direction to form contact surfaces between the margins of the top surface. | 02-05-2009 |
20090152978 | ELECTRIC MOTOR BRUSH - The present invention relates to a brush | 06-18-2009 |
20100225198 | ELECTRIC MOTOR - An electric motor has a pair of brushes for transferring power to windings of a wound rotor by making sliding contact with a cylindrical commutator. Each brush has a body with a pair of end surfaces, and a contact surface extending between the end surfaces and configured to slidingly contact a cylindrical circumferential surface of the commutator. The extending direction of the contact surface is inclined relative to the axial direction of the commutator, and the contact surface is V-shaped when viewed in the extending direction thereof. | 09-09-2010 |
20100244621 | AUDIBLE BRUSH WEAR INDICATOR FOR ROTATING ELECTRIC MACHINES - An electric machine incorporates a brush assembly that provides an audible warning when the brush in the brush assembly approaches the end of its useable length. The brush incorporates a device incorporated into the brush or a brush design which cooperates with the brush holder to generate the noise. The noise provides a warning to the user of the electric machine that the useable length of the brush material is near. | 09-30-2010 |
20120248929 | BRUSH WEAR DETECTOR SYSTEM WITH WIRELESS SENSOR - A brush wear detector system for a dynamoelectric machine is provided. The brush wear detector system includes a brush holder, and at least one brush located within the brush holder. At least one spring is in contact with the brush and the spring operates to force the brush against an electrically conductive member of the dynamoelectric machine. A wireless sensor is configured to detect when a predetermined amount of wear has occurred to the at least one brush, and is also configured to identify the brush having the predetermined amount of wear. The wireless sensor is attached to the at least one brush. | 10-04-2012 |
20130049524 | ELECTRIC MOTOR DRIVEN LIQUID PUMP AND BRUSH FOR SAME - In one implementation, a liquid pump includes a pumping element, an electric motor and a brush housing. The electric motor is coupled to the pumping element to drive the pumping element for rotation, and the motor has a commutator, brushes engaged with the commutator to provide electricity to the commutator and at least one biasing member yieldably biasing the brushes into engagement with the commutator. The brush housing defines brush cavities in which the brushes are received, where the brushes have a first surface engaged with the commutator and a second surface spaced from the first surface and acted upon by said at least one biasing member. The second surface is inclined at an acute included angle relative to the first surface. | 02-28-2013 |
20160190757 | Brush for an Electric Motor - A brush for an electric motor has a brush body having a front end surface configured to make sliding electrical contact with a commutator of the motor. First and second side surfaces are connected to the front end surface. The first side surface and the second side surface are positioned on opposite sides of the brush body in a rotational direction of the commutator. The front end surface has a first contact surface and a second contact surface that contact the commutator earlier than other regions of the front end surface, and are respectively positioned on diametrically opposed corners of the front end surface. In an initial state, the width of the contact area between the brush and the commutator is increased to extend the commutation time. | 06-30-2016 |
310249000 | With electrical connector | 7 |
20080258576 | GROUNDING BRUSH SYSTEM FOR MITIGATING ELECTRICAL CURRENT ON ROTATING SHAFTS - An improved grounding brush system for mitigating electrical current on a moving object such as a rotating shaft includes an electrically conductive layer applied to the object and associated with a brush assembly for conducting electrical current from the moving object to ground. | 10-23-2008 |
20090284099 | Electric rotary machine for vehicles - An AC generator is provided with a rotor including a rotating shaft having a pair of collector rings, a pair of brushes, and a brush device having a brush holder that housing portions are formed where the pair of brushes is contained. The brush device is provided with a pair of field terminals that ends are connected to each of the brushes and other ends are connected to the control apparatus, fixing terminals, which is electrically insulated with the field terminals, that fix the brush holder, and a wall part that is formed integrally with the brush holder and is arranged between the pair of field terminals. | 11-19-2009 |
20100133951 | CARBON BRUSH FOR TRANSMITTING HIGH CURRENTS - The embodiments of the invention relate to a carbon brush for transmitting high currents, having a connecting element for connecting an electrical track and a consumable contact element with a contact surface that is designed to lie flush against a commutator device, wherein the connecting element and the contact element are combined in a layer transition zone aligned perpendicularly to the direction of wear of the carbon brush and form a one-piece moulded body, wherein the connecting element and the contact element have different compositions, such that a carbon component of the contact element is greater than the carbon component of the connecting element and the contact element has a metal component differing from that of the connecting element. | 06-03-2010 |
20120038240 | FUEL PUMP AND METHOD OF MAKING THE SAME - A fuel pump includes a pump part, a motor part, two brushes, two pigtails, and an urging member. Each pigtail is made of a linear conductive member and includes one end portion electrically and mechanically connected to its corresponding brush. The urging member includes one end engaged with a motor casing, and the other end pressing and urging each brush against a commutator from its other axial end face. A distance between an inclined surface of the brush and a sliding surface of the commutator in an axial direction of the brush becomes longer toward a rear side of the brush in a rotation direction of the commutator. A side surface of each brush and an inner wall of the motor casing, which defines two brush accommodating chambers, define a clearance therebetween. Each pigtail includes an extension portion extending from its one end portion toward the rear side in the rotation direction of the commutator. | 02-16-2012 |
20120169178 | Systems, Methods, and Apparatus for Shorting Slip Rings of an Induction Motor - Systems, methods, and apparatus associated for lifting brushes and shorting slip rings are provided. One embodiment may include a shaft in operable communication with a WRIM rotor; multiple slip rings positioned radially around the shaft and in electrical communication with rotor windings of the WRIM; multiple brushes adapted for selective contact with a respective one of the plurality of slip rings. In addition, the system may include multiple selectively activating electrical contacts in electrical communication with respective terminals of the rotor windings of the WRIM; and an actuating mechanism in operable communication with the brushes and the electrical contacts. When the actuating mechanism is actuated, the electrical contacts create electrical shorts between the slip rings and the rotor windings of the WRIM and the plurality of brushes are lifted from contacting the plurality of slip rings. | 07-05-2012 |
20120228988 | BRUSH HOLDER ASSEMBLY WITH QUICK DISCONNECT TERMINAL - A brush holder assembly including a quick disconnect assembly for quickly disconnecting a brush and electrical leads from a remaining component of the brush holder assembly to facilitate brush removal and replacement. The quick disconnect assembly includes a receptacle having a cavity for removably receiving and an end of the electrical lead, such as the nugget, and a resilient clip. When positioned in the cavity of the receptacle, the resilient clip urges a surface of the nugget into direct contact with a surface of the receptacle partially defining the cavity, completing an electrical current pathway from the brush through the electrical lead to the nugget, and from the surface of the nugget to the surface of the receptacle. | 09-13-2012 |
20130062992 | BRUSH HOLDER FOR AN ELECTRICAL SWIVEL - Brush holder ( | 03-14-2013 |
310251000 | Structure (e.g., composite material) | 6 |
20090045694 | MICROFIBER HIGH CURRENT CONDUCTION DEVICE - A brush for the stator of an electric motor has microfibers establishing both mechanical and non-mechanical electrical connections to the commutator. | 02-19-2009 |
20090200893 | Carbon brush and rotating electrical machine - A rotating electrical machine, which is a direct current motor, includes carbon brushes. Each carbon brush contains graphite grains, metal particles, and solid lubricant, which are sintered in a dispersed state. The graphite grains are each formed of granulated substance of raw graphite particles, and the particle diameters of the graphite grains are within a range of 60 to 280 μm. The surface of the granulated substance is coated with amorphous carbon made of carbides of organic binder. A plurality of holes are formed in each carbon brush. The dimension (maximum dimension) of the holes is less than half the average particle diameter of the raw graphite particles. | 08-13-2009 |
20090261687 | METHOD AND DEVICE FOR MANUFACTURING A MULTILAYER COMPRESSION MOULDED ELEMENT - The invention relates to a method and a device for manufacturing a multi-layer compression moulded element and to a compression moulded element which is embodied as a multi-layer carbon brush and has at least a first and a second moulding layer, in which, in order to carry out the method, a multi-component mould which comprises a moulding element and a mould slide arrangement interacts with a moulding die, and in which a mould which is defined by the selected configuration of the moulding slide arrangement in the moulding element is filled by filling moulding segments which are formed one next to the other with moulding material in chronological succession in a transverse direction with respect to the axis of the moulding die, and by the compression moulded element being subsequently formed by moving the moulding die and moulding slide arrangement relative to one another in the mould. | 10-22-2009 |
20110018386 | MULTILAYER BRUSH - A multilayer brush, which essentially contains a composite having a graphite component and having a copper component, and a layered structure, a first layer being furnished with a high copper component and a further layer being furnished with a comparatively low copper component. It is provided that the copper component of the first layer in comparison with the copper component of the second layer corresponds to a ratio of ≦3/2. | 01-27-2011 |
20130264906 | Multi-Layer Brush - A multi-layer brush for making sliding contact with a commutator of an electric motor, includes a body and a shunt. The body includes a first electrically conductive layer, a second electrically conductive layer, and a partition layer disposed between the first and second conductive layers and electrically separating the first and second conductive layers. The shunt is coupled to the first conductive layer. The first conductive layer has a thickness greater than a thickness of the second conductive layer and the partition layer has a lateral leakage resistance greater than the longitudinal resistance of the first and second conductive layers. | 10-10-2013 |
20140001916 | CONTACT BRUSH | 01-02-2014 |
310252000 | With composition feature | 7 |
20090039728 | CONTACT ASSEMBLY - A contact assembly for making electrical connection between coaxial members generally includes a rotor having a plurality of spaced apart circumferential electrically conductive rings, and a stator surrounding a rotor with a plurality of spaced apart grooves aligned with the plurality of rings at a variable distance therefrom and enabling continuous, or sustained rotation of the rotor within the stator. A plurality of circular canted-coil springs is provided with each spring being disposed and a corresponding groove providing constant force against a corresponding ring independent of the variable distance between the compression ring and the groove. A plurality of electrical leads is provided with each lead being electrically connected to a corresponding ring. | 02-12-2009 |
310253000 | Carbonaceous | 6 |
20080278026 | Graphite Brush, and a Motor With Graphite Brush - To provide a graphite brush ( | 11-13-2008 |
20080303373 | Carbon Bruch - A carbon brush that can suppress a wear amount of a carbon commutator and is less swelling is provided. The carbon brush is one that slides in contact with a carbon commutator that is used in a fuel pump, the bulk density thereof being 1.85 g/cm | 12-11-2008 |
20090230814 | Carbon Brush of Motor and Method for Producing the Same - An electric motor that includes a rotor; a coil that is wound around the rotor; and a carbon brush that supplies power to the coil, wherein the brush is formed by using a raw material in which artificial graphite whose crystallites are flaky in shape is mixed with natural graphite whose crystallites are squamous or scaly in shape. | 09-17-2009 |
20110109192 | ELECTRIC MACHINE, IN PARTICULAR COMMUTATOR MACHINE - The invention relates to an electric machine, in particular a commutator machine ( | 05-12-2011 |
20120313479 | METHOD FOR PRODUCING A CARBON BRUSH IN A COMMUTATOR - The invention relates to a method for producing a carbon brush in a commutator for transmitting current in an electric motor, wherein the carbon brush is subjected to an artificial aging process after being produced and prior to being installed in the commutator, wherein the carbon brush is stored at an increased temperature for a defined period of time. | 12-13-2012 |
20130300251 | Carbon Brush for Fuel Pump and Method for Manufacturing Same - A carbon brush for a fuel pump includes a brush body and a lead wire connected to the brush body, and the brush body has carbon and polyether ether ketone as main components. Abnormal wear does not occur even if a fuel pump motor is operated at a high voltage. | 11-14-2013 |