Class / Patent application number | Description | Number of patent applications / Date published |
310220000 | Spark-reduction | 7 |
20100141081 | MOLD COMMUTATOR AND COMMUTATOR MOTOR USING THE SAME - The mold commutator of the present invention comprises a plurality of commutator segments made of copper or copper alloy and circumferentially arranged, a plurality of spark absorbing elements, disposed between adjacent commutator segments, with paired parallel surfaces respectively having electrodes thereon, and a resin mold portion which integrates these portions into one piece. The spark absorbing element is electrically connected to the commutator segment via the electrode, and spark voltage generated at the commutator segment is absorbed by current flowing between the electrodes. | 06-10-2010 |
20130057108 | SHAFT GROUNDING SYSTEM - Systems for grounding components in a machine are disclosed. In one embodiment, a system includes: an inner component configured to be connected to a shaft; a ground component configured to be disposed substantially about the inner component, the ground component configured to complement the inner component and substantially define a cavity there between; and a conductive substance disposed within the cavity substantially between the inner component and the ground component, the conductive substance configured to electrically connect the inner component and the ground component. | 03-07-2013 |
20130342071 | MOTOR - Disclosed is a motor, the motor according to an exemplary embodiment of the present disclosure including a stator arranged at an inner surface of a housing and including a magnet, a rotor core centrally arranged at the stator to pass through a rotation shaft, a rotor including an insulator covering the rotor core and a coil wound on the insulator, a commutator coupled to the rotation shaft to be electrically connected to the coil, and a brush coupled to the housing to be closely contacted to the commutator, wherein the insulator is formed with a short-circuit prevention unit formed on a drop path of conductive particles in order to prevent the short-circuit between the rotor core and the commutator from being generated by the conductive particles generated by the commutator and the brush. | 12-26-2013 |
20150318769 | MOTOR - A motor includes an armature core having m×n teeth (m is an odd number 3, and n is a natural number 2), a plurality of coils, and a commutator. The motor further includes field magnets including 2n magnetic poles and at least a first-potential brush and at least a second-potential brush. The commutator includes a segment group defined by 2m×n segments. Only the coil defined by winding a continuous conducting wire in a predetermined winding direction is disposed in each of k teeth among the m×n teeth, and only the coil defined by winding the continuous conducting wire in a direction reverse to the predetermined winding direction is disposed in each of teeth disposed at a position separated from each of the k teeth at 360×i degrees (i is a natural number≦(n−1)) of electric angles. | 11-05-2015 |
20160056601 | BRUSH STRUCTURE OF FUEL PUMP FOR VEHICLE - There is provided structure of a brush of a fuel pump for a vehicle in which the brush is formed of two kinds of different materials unlike a typical brush which is formed of only one material, more particularly, a high resistance material is used at one side portion only of the brush, and the same efficiency is ensured as that of the typical brush formed of low resistance material only, by suppressing the spark generation even in use of ethanol and low grade fuels and suppressing the spark generated in high current fuel pump and minimizing the abrasion of the structure due to decrease of spark generation, thereby ensuring the durability and the reliability and improving the EMI characters due to decrease of spark noise of the fuel pump. | 02-25-2016 |
310221000 | Arc extinguishers | 1 |
20100084943 | MOLDED COMMUTATOR, METHOD OF MANUFACTURING THE SAME, AND MOTOR USING THE SAME - The molded commutator has commutator segments; cylindrical varistor pins press-fitted between the adjacent commutator segments; and molding material for molding commutator and varistor pins as an integral structure to form a molded commutator. Varistor pins suppress spark voltage between the commutator segments, extending the operating life of the brush. | 04-08-2010 |
310222000 | Spark-neutralizing current | 1 |
20130002088 | ELECTRIC MOTOR - A brush direct current motor has a first connecting portion and a second connecting portion for respectively connecting the positive and negative electrode of a direct current power source, a stator having a number of coils corresponding to N phases, a rotor, a current converting device and a spark suppression circuit. The spark suppression circuit has N branches. Each branch comprises a first diode and a second diode, the cathode of the first diode and the anode of the second diode are respectively connected to the first connecting portion and the second connecting portion, the anode of the first diode and the cathode of the second diode are connected to a corresponding phase. | 01-03-2013 |