Brush Holders Or Rigging Patents (Class 310/239)
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Patent number: 7053516Abstract: A back cover for a motor includes a shell body, two carbon brush holders and two covering caps. The shell body has two receiving holes cut through inside and outside walls thereof. The carbon brush holders are respectively mounted in the shell body for holding a respective carbon brush bar in the receiving holes. The two carbon brush holders each have a mounting plate located in one of the receiving holes, and a spring supported on the mounting plate for forcing the carbon brush bar toward an inside of the shell body. The covering caps are respectively mounted on the outside wall of the shell body to cover the receiving holes respectively.Type: GrantFiled: June 18, 2004Date of Patent: May 30, 2006Assignee: Taiwan Long Hawn Enterprises Co.Inventor: Meng-Chiu Yu
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Patent number: 7049727Abstract: A brush-holder system for an electric motor which is the type which has a rotating commutator that is journaled in a first motor housing portion, the assembly includes a second motor housing portion configured to be matingly connected to the first motor housing portion and having at least one brush holding pocket therein. The pocket is formed by a structure of the second motor housing portion which defines a support surface on one side thereof and a bridge portion on an opposite side thereof. The system further includes an elongated brush having first and second ends, wherein the first end is configured to be coupled to a biasing member and the second end is configured to contact the motor commutator, and at least one removable brush-holder having a first open end configured to receive the brush therein and to fit in the pocket, and a second open end enabling the brush to extend outwardly therefrom to contact the motor commutator.Type: GrantFiled: November 17, 2004Date of Patent: May 23, 2006Assignee: Robert Bosch GmbHInventors: Ralf Bocka, Joseph Z. Wascow
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Patent number: 7045928Abstract: The invention concerns a pot or cup-shaped carrier (10) for carbon brushes (12), especially intended for servomotors, comprising an inner wall, such as a bottom wall, originating from the carrier perimeter wall, and interspersed by the commutator or by a shaft originating therefrom, wherein each carbon brush is acted upon via a plate spring (14) in the direction of a commutator that is interspersed by the carrier.Type: GrantFiled: September 10, 2004Date of Patent: May 16, 2006Assignee: K-Tec Kunststoffverarbeitung GmbHInventor: Wolfgang Kasdorf
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Patent number: 7038337Abstract: A permanent magnet DC motor 10 having electro-magnetic interference (EMI) suppression includes a metal motor housing 12 and a brush card assembly 34. The brush card assembly includes brushes 20 and leads 24 constructed and arranged to be coupled with a source of power to power the motor. A brush card housing 14 has a first portion 18 housing the brushes and a second portion 22, integral with the first portion, and housing the leads. A printed circuit board 26 is mounted with respect to the second portion of the housing and carries at least one electro-magnetic interference (EMI) suppression component 30 constructed and arranged to suppress EMI generated by the motor. The leads are electrically connected to the printed circuit board so that current can be provided through the printed circuit board to the brushes.Type: GrantFiled: August 21, 2003Date of Patent: May 2, 2006Assignee: Siemens VDO Automotive CorporationInventors: Kenneth Scott Thomson, Robert F. Bent
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Patent number: 7034430Abstract: Devices and methods of use for brush holders are disclosed. A brush holder including an over-center locking device is disclosed. Also illustrated are methods and devices for maintaining brush pressure against a moving conductive surface using a spring without a back plate. Methods and devices for routing current from a brush to an output location without conducting through a brush box are shown. A system for ready removal and replacement of brushes, contacts and springs is disclosed. Also included are mechanisms and methods for preventing a brush from falling downward or out during removal of the brush. Methods and devices for cutting off current flow without creating arcing or shorting between a brush and collector ring or other moving conductive surface are presented as well.Type: GrantFiled: December 18, 2002Date of Patent: April 25, 2006Assignee: Cutsforth Products, Inc.Inventors: Robert S. Custforth, David L. Cutsforth
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Patent number: 7032290Abstract: A brush holder incorporates a terminal integral part, which has a coupling portion. The coupling portion couples the terminals with each other. The brush holder has a resin body and a plurality of terminals. The resin body has an opening. The terminals are embedded in the resin body. The terminals are coupled to each other by the coupling portion as an integral part before being embedded in the resin body. The coupling portion is exposed from the opening of the resin body. The terminals are separated from each other by cutting the coupling portion, which is exposed from the opening of the resin body. A coating member coats the opening of the resin body to insulate each terminal.Type: GrantFiled: March 19, 2003Date of Patent: April 25, 2006Assignee: ASMO Co., Ltd.Inventors: Yoshinobu Hirano, Kenji Obata, Masakuni Masuda
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Patent number: 7034431Abstract: A brush holding plate includes cartridges and brushes, which are guided into the cartridges. The brushes are guided in a spring-loaded manner in the radial direction towards a central opening in the brush holding plate. The cartridges are arranged on the brush holding plate in such a way that they can be displaced from a radially outer pre-assembly position into a radially inner end assembly position.Type: GrantFiled: January 21, 2003Date of Patent: April 25, 2006Assignee: Valeo Wischersysteme GmbHInventors: Harald Kapitza, Bernd Walther
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Patent number: 7015618Abstract: The invention concerns an arrangement for supplying power to an electric motor having a commutator, comprising at least two carbon brushes (12, 14), as well as flat springs (16, 18) that subject said brushes to force in the direction of the commutator and proceed from a mounting and are connected to electric terminals. In order to enable a defined transfer of force from the flat springs to the carbon brushes, while at the same time ensuring that an unambiguous fixing of the flat springs into position and a secure current supply takes place, it is proposed that the flat springs (16, 18) have a U-shape with legs (38, 40) of unequal length, that a carbon brush (12, 14) be fastened to each longer leg, and that the shorter leg be connected electrically conductive to an at least partially encapsulated conductor path or printed circuit, which is at least a section of the mounting.Type: GrantFiled: September 10, 2004Date of Patent: March 21, 2006Assignee: K-TEC GmbHInventor: Wolfgang Kasdorf
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Patent number: 7014432Abstract: A fuel pump includes a housing, a pump section, a motor section including a commutator, a cover disposed at one end of the housing, a pair of brushes disposed in a pair of brush holes formed in the cover to be in contact with the commutator; and a pair of brush springs, disposed in a pair of spring holes formed in the cover, and an engaging member for restricting the brushes to move toward the motor section.Type: GrantFiled: March 27, 2003Date of Patent: March 21, 2006Assignee: Denso CorporationInventor: Eiji Iwanari
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Patent number: 7012352Abstract: Powder produced by abrasion due to sliding between a brush and a commutator is prevented from moving toward a rotor. A recess is provided between the rotor and a slide face of the brush and the commutator, where powder produced by abrasion at the brush may enter into a motor and increase sliding resistance of the rotor. Thus, there is no such powder produced by abrasion entering into the motor as increasing sliding resistance of the rotor.Type: GrantFiled: August 30, 2002Date of Patent: March 14, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Youichi Fujita, Sotsuo Miyoshi, Satoru Hasegawa, Katsunori Takai
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Patent number: 7005774Abstract: A rotary current-collecting device includes a rotary slip ring and brushes coming into sliding contact with the outer peripheral surface of the slip ring. The brush-holding ring has an inner surface to which three brush-holding springs are fixed by screws. Each of the brushes is fixed to the tip end of the brush-holding spring and is pushed against the outer surface of the slip ring under the resilient restoration force of the brush-holding spring. When the slip ring revolves, the brushes come into sliding contact with the outer peripheral surface of the slip ring. The brush is made of a metal-graphite compound consisting of 70 weight percent copper and 30 weight percent graphite. The slip ring is entirely made of glassy carbon, so that the brush abrasion can be reduced.Type: GrantFiled: October 7, 2004Date of Patent: February 28, 2006Assignee: Rigaku CorporationInventors: Masaru Kuribayashi, Tomohiro Chaki
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Patent number: 6998754Abstract: Detailed are brush assemblies for electric motors. The assemblies may include retention springs or other mechanisms designed to bias brushes away from surfaces of commutators during assembly of the motors. Such retention mechanisms additionally may be fitted into cavities in associated cover plates following motor assembly. The cover plates further may include tabs which, in use of the motor, assist in supporting side surfaces of the brushes and in orienting the plate relative to a corresponding brush card.Type: GrantFiled: March 5, 2004Date of Patent: February 14, 2006Assignee: Energy Conversion Systems Holdings, LLCInventors: Michael Walter Nedriga, Pimol Ballard Vonkchalee, Shepard Lynn Hockaday, Alvin Leon Farthing, Otway Archer Southall
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Patent number: 6992414Abstract: A permanent magnet DC motor 10 having electromagnetic interference (EMI) suppression includes a metal motor housing 12 and a brush card assembly 34. The brush card assembly includes brushes 20 and leads 24 constructed and arranged to be coupled with a source of power to power the motor. A brush card housing 14 has a first portion 18 housing the brushes and a second portion 22, integral with the first portion, and housing the leads. A printed circuit board 26 is mounted with respect to the second portion of the housing and carries at least one electromagnetic interference (EMI) suppression component 30 constructed and arranged to suppress EMI generated by the motor. The leads are electrically connected to the printed circuit board so that current can be provided through the printed circuit board to the brushes.Type: GrantFiled: April 4, 2005Date of Patent: January 31, 2006Assignee: Siemens VDO Automotive CorporationInventors: Kenneth Scott Thomson, Robert F. Bent
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Patent number: 6977458Abstract: A drive device for moving the sliding roof of a motor vehicle is provided which includes an electric motor including an armature, a pole shaft and a brush system, gearing driven by the electric motor, and a circuit arrangement for triggering the electric motor. The electric motor is accommodated in a motor housing while the gearing and at least parts of the circuit arrangement are accommodated in a gear housing connected to the motor housing. The brush system is accommodated directly in the gear housing independently of the circuit arrangement and without the interposition of additional support elements.Type: GrantFiled: April 4, 2003Date of Patent: December 20, 2005Assignee: Webasto Vehicle Systems International GmbHInventors: Thomas Kraus, Bernhard Meier
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Patent number: 6975059Abstract: An object of the invention is to improve a layout property of members arranged on the brush holder. Power feeding terminals are formed in a flat shape extending in an axial direction of an armature shaft, and the power feeding terminal is arranged side by side in a width direction with respect to the power feeding terminal in one end portion of a brush holder. A condenser is provided between the power feeding terminals and the armature shaft. Further, a power supply circuit for electrically connecting the power feeding terminals to a leaf spring brush is electrically connected to a motor housing via a grounding stay, and a choke coil for reducing a noise generated in the power supply circuit is arranged so as to be lapped over a screw member fixing the leaf spring brush to the brush holder in the axial direction of the armature shaft.Type: GrantFiled: July 17, 2003Date of Patent: December 13, 2005Assignee: Mitsuba CorporationInventors: Hiroshi Sakai, Masayuki Ota, Yukiyoshi Iso, Takao Ochiai
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Patent number: 6967426Abstract: A brush support jig for use during mounting of a brush assembly on a rotary electric machine having slip rings, to restrain the brushes against contact with the slip rings during the mounting operation, is of pin configuration having a linear portion formed of a linear portion made of a metal such as steel and a coating portion made of a material such as synthetic resin, having a lower degree of hardness than the slip rings, which covers the linear portion and thereby prevents damage to the slip rings in the event that that brush support jig comes into contact with the slip rings during the mounting operation.Type: GrantFiled: February 11, 2003Date of Patent: November 22, 2005Assignee: Denso CorporationInventors: Takafumi Tsuge, Hiroaki Ishikawa
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Patent number: 6965178Abstract: A yoke is substantially cylindrical and has an opening portion. A brush holder member is secured to the opening portion of the yoke. The brush holder member retains a pair of supply brushes. A housing member is secured to the opening portion of the yoke on the outside of the brush holder member and covers the opening portion. A pair of securing pieces is formed integrally with the yoke. The securing pieces secure the brush holder member and the housing member to the yoke.Type: GrantFiled: July 16, 2003Date of Patent: November 15, 2005Assignees: Asmo Co., Ltd., Jeco Co., Ltd.Inventors: Terumitsu Takahashi, Masashi Yamamura, Kazutoshi Ito, Hikoshi Izumi, Kenji Matsushima, Makoto Iizuka
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Patent number: 6965172Abstract: A starter for cranking an internal combustion engine is mainly composed of an electric motor and a magnetic switch having a battery bolt connected to an on-board battery and a motor bolt connected to the electric motor. When the magnetic switch is closed, electric power is supplied to the electric motor to thereby generate a rotational torque for cranking the engine. One end of a motor terminal is electrically connected to the motor bolt, and the other end is led into a motor casing through a rubber insulator supported on the motor casing. The motor terminal includes one or more curved portions having resiliency, and they are positioned between the rubber insulator and the motor bolt. Water penetration into the motor casing is prevented by the rubber insulator, and the vibration of the motor terminal is alleviated by resiliency of the curved portions.Type: GrantFiled: September 13, 2004Date of Patent: November 15, 2005Assignee: Denso CorporationInventors: Takeshi Shimoyama, Youichi Hasegawa, Sadayoshi Kajino
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Patent number: 6958918Abstract: A contact unit described includes a contact plate and a connection plug 4 for an adjusting device. A position sensor is disposed on the contact plate whose electrical contact results over conductor tracks 13 molded into the contact plate. The contact plate 8 further includes contact flags 12 for contacting an electromotor, wherein the contact flags 12 are led outside to a plug 4 over conductor tracks that are injected into the contact plate 8. All conductor tracks are led in a fixed position with respect to one another in a plug inner portion 14, wherein this plug inner portion is produced in one injection process with the contact plate 8, and connection between the contact plate 8 and the plug inner portion results only through the conductor tracks 13.Type: GrantFiled: November 10, 2004Date of Patent: October 25, 2005Assignee: Pierburg GmbHInventors: Thomas Schroder, Marc-Anton Munich, Peter Nitsch, Michael Glasser
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Patent number: 6952066Abstract: A connecting element (4) for an electric motor (1) of a fuel feed unit of a motor vehicle has a molded component (7) which is fabricated in one piece with a connecting contact (6) and a guide for a carbon brush. The molded component (7) is fabricated from sheet metal and can be inserted in a premounted form into a receptacle (8) of the connecting element (4).Type: GrantFiled: October 6, 2003Date of Patent: October 4, 2005Assignee: Siemens AktiengesellschaftInventors: Sabine Burhenne, Thomas Schmidt
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Patent number: 6949860Abstract: In an electric motor in which a magnet holder is provided in an inner periphery of a yoke, and a terminal insertion hole is provided in a feed connector provided in a brush holder. A terminal connected to a brush is inserted to the terminal insertion hole, and the yoke and the brush holder are connected. An engagement portion is provided in the terminal, a convex portion is provided in an end surface of the magnet holder, and the convex portion of the magnet holder is allowed to be engaged with the engagement portion of the terminal under a state in which the yoke and the brush holder are connected.Type: GrantFiled: September 5, 2003Date of Patent: September 27, 2005Assignee: Showa CorporationInventors: Yohei Hama, Akira Fujisaki
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Patent number: 6949862Abstract: A brush assembly (10) for a miniature electric motor has a beryllium copper strip brush arm (14) and a graphite material brush head (12) moulded to an end thereof. The brush arm (14) has a number of apertures. The brush head (12) has a number of projections which pass through the apertures and form one or more caps (24) on the reverse side of the brush arm to secure the brush head (12) to the brush arm (14). A method of forming the brush assembly is also provided.Type: GrantFiled: August 19, 2004Date of Patent: September 27, 2005Assignee: Johnson Electric S.A.Inventor: Georg Strobl
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Patent number: 6949861Abstract: A carbon brush holder includes a tubular copper conducting receptacle, a lead wire terminal riveted to the outside wall of the copper conducting receptacle, and an electrically insulative hollow holder base holding the copper conducting receptacle, the electrically insulative hollow holder base having an inside locating groove, which receives the bottom end of the lead wire terminal to hold the lead wire terminal in position.Type: GrantFiled: April 13, 2004Date of Patent: September 27, 2005Inventors: Su-Chen Liao, Meng-Chiu Yu
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Patent number: 6933637Abstract: An electric motor is disclosed in which a rising wall is formed in a rear side of a terminal insertion hole in a brush holder, a terminal elastically deforms with respect to an upper surface of the rising wall so as to get over the rising wall, thereby being inserted into the terminal insertion hole, and a bent base end portion of the terminal is abutted against the rising wall so as to be prevented from coming off, an elastic deforming performance regulating portion is provided in the terminal.Type: GrantFiled: November 24, 2003Date of Patent: August 23, 2005Assignee: Showa CorporationInventors: Yohei Hama, Akira Fujisaki
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Patent number: 6933650Abstract: The present invention relates to a wear indicator for a motor carbon brush which includes a housing, carbon brushes, an elastic element, a circuit board with an alarm indicator light and an electric probe disposed on the circuit board. The electric probe is connected to the alarm indicator light and the carbon brush has a contact portion on its outer surface which when the brush is worn and need to be changed is electrically connected to the alarm indicator light through the electrical probe to turn the alarm indicator light on. The present invention is simple to manufacture and gives a indication of wear.Type: GrantFiled: January 9, 2004Date of Patent: August 23, 2005Assignee: Positec Power Tools (Suzhou) Co., Ltd.Inventor: Yongfeng Wang
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Patent number: 6930418Abstract: A centralized power distribution unit for a vehicular thin brushless motor includes a plurality of bus bars, an insulating holder that holds the bus bars to form a predetermined gap between the bus bars, and a resin insulating layer that covers the bus bars. Each of the bus bars has a terminal portion to be connected to a power source, such as a battery, and a tab to be connected to a winding of a stator. The bus bars are disposed correspondingly with phases of the motor. A plurality of holding grooves are formed in the insulating holder. The bus bars, which are pre-bent in a thickness direction to be shaped into a substantially annular shape, are respectively accommodated in the holding grooves. The pre-bending is preferably carried out by a bending machine.Type: GrantFiled: October 28, 2002Date of Patent: August 16, 2005Assignees: Sumitomo Wiring Systems, Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Makoto Kobayashi, Izumi Suzuki, Tatsuro Horie, Kenji Fukuda
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Patent number: 6930431Abstract: The invention is based on an electrical machine with a rotatable brush plate (10, 12), which is held in its end positions by means of at least one holding mechanism (16, 18) that acts in the circumference direction (14). The invention proposes that the holding mechanism (16, 18) have at least one device (20, 22) that loads the brush plate (10, 12) in the circumference direction (14).Type: GrantFiled: July 20, 2002Date of Patent: August 16, 2005Assignee: Robert Bosch GmbHInventors: Manfred Buck, Otto Baumann, Siegfried Fehrle, Dietmar Saur, Andre Ullrich, Michael Weiss
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Patent number: 6927523Abstract: The present invention aims at making a motor with a brush in the direction of its motor shaft small by providing a thin brush device and at preventing deterioration of functions thereof. A guide portion is provided at a brush base portion and a recess portion is provided at the a brush holder. In the recess, an end portion of a winding portion of a coil-shape spring is held at the brush base portion, and the other end portion is held at the brush holder. Further, the longitudinal direction of the coil-shape spring is set so as to conform to the direction of face of the brush holder, and thereby the coil-shape spring and the brush are disposed on a substantially identical plane, having a state where the winding portion is placed along the guide and recess portion.Type: GrantFiled: November 29, 2002Date of Patent: August 9, 2005Assignee: Namiki Seimitsu Houseki Kabushiki KaishaInventor: Atsushi Okamoto
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Patent number: 6927522Abstract: In order to improve a power supply unit for a commutator of an electric motor, comprising a brush holder support with brushes arranged in it and interacting with the commutator, in such a manner that this can be produced as inexpensively and in as functionally reliable a manner as possible it is suggested that the power supply unit comprise an electronics housing which is formed by the brush holder support and a protective cover connected to it and that the electronics housing seal an electronic circuit module arranged in an interior thereof in a functionally reliable manner in relation to the surroundings.Type: GrantFiled: February 9, 2004Date of Patent: August 9, 2005Assignee: Alcoa Fujikura Gesellschaft mit beschraenkter HaftungInventor: Robert Skofljanec
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Patent number: 6924578Abstract: An electric motor provided with a terminal insertion hole to which a terminal connected to a brush is inserted, in a feed connector, a fitting hole is formed in a base end portion of the terminal, a projection is formed in a side of a brush holder, and the fitting hole of the terminal inserted into the terminal insertion hole can be fitted to the projection of the brush holder.Type: GrantFiled: November 24, 2003Date of Patent: August 2, 2005Assignee: Showa CorporationInventors: Yohei Hama, Akira Fujisaki
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Patent number: 6924577Abstract: A brush box assembly for use in an electric motor and an electric motor having a brush biasing mechanism that also retains the brushes to allow installation of a sliding electrical contact assembly is described. The brush box assembly has a plurality of brush holders each with a brush retention slot, a plurality of brushes each adapted to fit in the brush retention slots, the brushes having a contact face and a non-contact face, and a plurality of torsion springs each having a spring loading arm and a spring retention arm, each spring loading arm contacting one brush on the non-contact face and adapted to bias the brush against a sliding electrical contact after installation of the sliding electrical contact assembly, each spring retention arm adapted to contact one brush on the front side and retain the brush in the brush retention slot during installation of the sliding electrical contact assembly. A method of manufacture of a device having brushes with the biasing and retention mechanism is also disclosed.Type: GrantFiled: January 13, 2003Date of Patent: August 2, 2005Assignee: Energy Conversion Systems Holdings, LLCInventors: Otway Archer Southall, Alvin Leon Farthing, Dan L. Shull
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Patent number: 6922003Abstract: Each brush holder is formed by bending a holder material made of a metal plate, so that the brush holder is shaped into a generally rectangular tubular body, which includes opposed first and second lateral walls, a top wall and a base wall. A base plate includes holder limiting grooves. Each brush holder is received in a corresponding one of the limiting grooves. The limiting groove limits an increase in a space between the first lateral wall and the second lateral wall of the corresponding brush holder. Furthermore, each brush is received in a corresponding one of the brush holders in a slidable manner in a sliding direction toward and away from a commutator of a motor.Type: GrantFiled: May 25, 2004Date of Patent: July 26, 2005Assignee: Asmo Co., Ltd.Inventor: Yasuaki Uchida
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Patent number: 6917135Abstract: An insulating member for a carbon brush holder includes a main body and a cover member. The main body includes a through hole, which has an internal thread formed around its periphery. The internal thread is provided with a spiral internal thread tooth serially formed thereon. The internal thread tooth has a first internal tooth bevel and a second internal tooth bevel. The first internal tooth bevel has a larger distance between a peak and a bottom of the internal thread tooth than that of the second internal tooth bevel. The second internal tooth bevel has a first convexity abutting the first internal tooth bevel. The cover member has an external thread formed around a periphery thereof for threadedly fitted into the internal thread of the main body. Accordingly, the cover member can be tightly threadedly fitted with the main body.Type: GrantFiled: April 13, 2004Date of Patent: July 12, 2005Inventor: Meng-Chiu Yu
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Patent number: 6909218Abstract: A end cap and brush box assembly for a mechanically commutated electric motor including an end cap constructed from high temperature material which also has resilient mechanical properties. The end cap and brush box assembly includes a two piece brush box having a first lock tab and a second lock tab for securing the two piece brush box to the end cap. The two piece brush box has a brush hood secured to a base plate. The base plate has a shunt welding plate for welding to an electrical shunt of a brush and a connector for connecting to an electrical lead coupled to a power source.Type: GrantFiled: February 26, 2003Date of Patent: June 21, 2005Assignee: Black & Decker Inc.Inventors: Earl M. Ortt, Michael J. Agnes, Michael Zemlok
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Patent number: 6903484Abstract: An electrical brush holder and ancillary cable for applying a mechanical force to an electrical brush and for establishing electrical contact between the electrical brush and a current conducting element. The brush holder includes a first wall fastened to the current conducting element, a second wall fastened to the brush, a sidewall lengthwise extendable in an axis direction of the brush and a flexible cable composed of ultra-fine metal fibers configured to conduct current between the current conducting element and the brush. The sidewall cooperates with the first and second walls to form a volume defined by the first wall, the second wall and the sidewall. A fluidic pressurized medium may be contained in the volume for applying a light approximately constant pressure to the brush.Type: GrantFiled: April 21, 2000Date of Patent: June 7, 2005Inventor: Doris Kuhlmann-Wilsdorf
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Patent number: 6900563Abstract: A choke 20 is provided for suppressing radio-frequency interference of a brush-type motor. The choke includes a single wire having a portion wound about a coil axis A to define a plurality of coils 24 including two outermost coils 26 and 28. An attaching structure 30 extends from one of the outermost coils and includes a loop structure 42. The loop structure is constructed and arranged to be inserted into a slot 58 in a brush card 48 and moved into hooked relation with a retaining member 60 of the brush card that is associated with the slot so as secure the choke to the brush card. At least a portion of the attaching structure is constructed and arranged to be in electrical connection with a brush 56 of a motor when the choke is secured to the brush card. An elongated end portion 44 of the choke extends directly from the other of the outermost coils.Type: GrantFiled: May 18, 2004Date of Patent: May 31, 2005Assignee: Siemens VDO Automotive Inc.Inventors: Sergey Tyshchuk, John Seguin, Alex Gubbels
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Patent number: 6894410Abstract: A centralized power distribution unit for a vehicular thin brushless motor includes a plurality of bus bars and a resin insulating layer that covers the bus bars. The bus bars are disposed correspondingly with phases of the motor. Each of the bus bars has a terminal portion to be connected to a battery and one or more tabs to be connected respectively to one or more windings of a stator. Each of the bus bars is shaped into a substantially annular shape by bending a molded material in a thickness direction. The molded material is obtained by stamping out a conductive metal plate into a strip-like shape. Diameters of the annular shapes of the bus bars are set to be different from one another depending on the corresponding phase of the motor. The bus bars are stacked in a radial direction of the centralized power distribution unit, mutually separated by a predetermined gap.Type: GrantFiled: October 28, 2002Date of Patent: May 17, 2005Assignees: Sumitomo Wiring Systems, Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Makoto Kobayashi, Izumi Suzuki, Tatsuro Horie, Kenji Fukuda
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Patent number: 6885126Abstract: A motor has a motor housing, a brush mechanism having a substrate, and a pair of electricity supply lines extending from the substrate. A first support portion, a second support portion and a third support portion are located about the central axis of the substrate. The substrate is supported by the housing with vibration absorbing members, each of which provided at one of the first to third support portions. The first support portion is located between the electricity supply lines. The second and third support portions are symmetrically located on both sides of a straight line that extends through the first support portion and the axis of the substrate. Therefore, the brush mechanism is prevented from being inclined, and vibration of the brush mechanism is effectively absorbed.Type: GrantFiled: July 15, 2002Date of Patent: April 26, 2005Assignee: Asmo Co., Ltd.Inventors: Terumitsu Takahashi, Yoshihiro Adachi, Akira Sugiura, Yuji Yamashita, Kazutoshi Ito
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Patent number: 6876121Abstract: An axial direction sliding-contact type brush apparatus is provided which can not only maintain performance of suppressing vibration of a brush of a flat vibrator motor but also allow the brush to form a stable electrical contact with a commutator. The base portion of the brush is installed at the exposed portion of the pattern of the brush base above the bracket at an elevation angle of 45° or less with respect to the brush base. The ultraviolet-cured acryl-based resin is coated on the base portion of the brush to cover a position located at about ? of the side projection length L of the brush arm portion from the base portion of the brush.Type: GrantFiled: July 18, 2002Date of Patent: April 5, 2005Assignee: Tokyo Parts Industrial Co., Ltd.Inventors: Hajime Kobayashi, Tetsushi Yashima, Katsuhito Sohara
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Patent number: 6873076Abstract: An electric drive unit provides a simple and economical electrical connection of an electric motor and an electronic module. The commutator of the electric motor, a brush rocker ring arranged on the commutator, and the drive shaft of the electric motor as well as the carrier body of the electronic module are inserted into a transmission housing. In the transmission housing, the carrier body of the electronic module is positioned so that contact elements provided on the brush rocker ring engage into contact points provided on the carrier body of the electronic module. The electric drive unit can be used for window lifter drives.Type: GrantFiled: January 18, 2001Date of Patent: March 29, 2005Assignee: Conti Temic microelectronic GmbHInventors: Georg Kaeufl, Johann Schneider, Klaus Spreng
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Patent number: 6873084Abstract: The Stationary Armature Machine (SAM) comprised of a stationary armature, a stationary commutator affixed to the frame or housing and a rotating field and brushes affixed to a common shaft as a means for mechanical commutation of electrical currents based on Lorentz' force law. SAM's unique stationary armature increases current carrying capacity and heat abatement at low voltages and high rotating speeds without increasing overall physical size relative to BLDC motors. SAM's armature and field structure are arranged in reverse having the armature in a stationary position with a commutation assembly affixed to the machine's housing while said field structure (and brush assembly) rotate at the center of the machine. By making the armature and commutator assembly stationary, the current carrying conductors can be made much larger without being subjected to extreme centrifugal forces at high rotating velocities.Type: GrantFiled: August 25, 2003Date of Patent: March 29, 2005Inventor: Douglas Odell Richard
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Patent number: 6873083Abstract: A multi-brush cage assembly for a subfractional horsepower electric motor has two brushes 22, 23 received in separate chambers 24, 25 of the cage and urged by springs 26, 27 towards a commutator 15 of the motor. An L-shaped changeover lever 30 is located on a pivot 33 between the chambers and keeps one brush 23 retracted until the other brush 22 has worn out.Type: GrantFiled: May 21, 2003Date of Patent: March 29, 2005Assignee: Johnson Electric S.A.Inventors: Fretrick Siu Kwan Ko, Yiu Leung Man
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Patent number: 6870298Abstract: A rotating electric machine, including: a bowl-like housing having a through hole penetrated by a shaft and having a cutout portion in a part of an opening portion; a commutator fixed to the shaft; a base fixed to the housing by a clamp screw and having a tapped hole through which the clamp screw is inserted with a play; a brush disposed in the base and rubbing against the commutator; a plate having a joint portion to which a lead wire led outside is welded and fixed to the base; a grommet penetrated by the lead wire and engaged in the cutout portion of the housing; and a positioning unit which positions the lead wire to be welded in the joint portion.Type: GrantFiled: March 3, 2004Date of Patent: March 22, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazuhisa Takashima, Akihiro Shibata
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Patent number: 6870297Abstract: Holding device for a carbon brush especially connected to a commutator or a friction ring with a front end including a bent spring element with a U- or L-shaped bent holding device segment and a carrier segment for receiving the carbon brush. In order to fix the brush securely without a notch effect, the carrier segment includes a support surface supporting the carbon brush on its rear side, and holding segments protruding from the carrier segment and extending along at least two opposing lateral surfaces of the carbon brush.Type: GrantFiled: December 18, 2001Date of Patent: March 22, 2005Assignee: K-Tech GmbHInventor: Wolfgang Käsdorf
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Patent number: 6867528Abstract: A brush assembly is constructed such that a brush and a brush terminal are linked by means of a pigtail, a brush spring is disposed under compression between the brush and the brush terminal, and a cylindrical guide is disposed near the brush terminal inside the brush spring.Type: GrantFiled: June 12, 2003Date of Patent: March 15, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hirokazu Inoue, Hidehiko Kitahara, Hideyuki Hayashi, Tomoki Takahashi
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Patent number: 6867529Abstract: The present invention provides an automotive alternator enabling a brush replacement operation to be improved by making a cap covering an opening portion for brush replacement formed in a case insertable to simplify removal and replacement of the cap. A brush holder through which a brush insertion aperture is disposed and into a head portion of which a cover is fitted is disposed inside a case such that an aperture direction of the brush insertion aperture is perpendicular to an axial direction of a shaft, and a brush is disposed so as to be held inside the brush insertion aperture and slide in contact with a slip ring fixed to the shaft. An opening portion for brush replacement is formed in a portion of the case facing the cover, and a cap is insertably mounted to this opening portion.Type: GrantFiled: April 12, 2002Date of Patent: March 15, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hirokazu Inoue, Tomoki Takahashi, Hideyuki Hayashi
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Patent number: 6864615Abstract: The electric machine includes a collector (60), a brush-holder assembly comprising an end cap (26) and a set of members (28, 30, 32, 34) for electrical connection equipped with guide cages (36, 38, 40, 42) suitable for accommodating a respective brush (44), in which a member (64) for limiting the radial displacement of the brushes in the absence of a collector is provided, the dimensions of the limiting member (64) being suitable for obtaining a tight fit of this member on the end cap (26). Application for the mounting of a brush holder for a motor-vehicle starter.Type: GrantFiled: December 20, 2001Date of Patent: March 8, 2005Assignee: Valeo Equipments Electriques MoteurInventors: Xavier Vacheron, José Izquierdo, Sébastien Perard, Yann Rouillard
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Patent number: 6858955Abstract: An end cap assembly 20 for an electric motor has an insulating body 22 and a conductive cover 24. The cover 24 supports a bearing for a shaft of the motor. The body 22 supports brushes and motor terminals. An EMI device 36 is electrically connected across the motor terminals and is earthed to the cover by way of resilient contacts.Type: GrantFiled: August 21, 2001Date of Patent: February 22, 2005Assignee: Johnson Electric S.A.Inventor: James Ching Sik Lau
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Patent number: 6856066Abstract: A brush device has a brush that slides against an outer circumferential surface of a cylindrical rotor. The brush device includes a base member, a terminal retained by the base member, an electric wire, which connects the brush to the terminal, and a cylindrical brush holder. The brush holder is located on the base member. The brush holder has a holder axis, which extends along the radial direction of the rotor. The brush is accommodated in and retained by the brush holder and is movable along the holder axis. The brush holder has an opening portion, which is formed at the outer portion of the brush holder with respect to the radial direction of the rotor. The opening portion permits the brush to pass along a direction perpendicular to the holder axis.Type: GrantFiled: July 16, 2003Date of Patent: February 15, 2005Assignees: JECO Co., Ltd., ASMO Co., Ltd.Inventors: Terumitsu Takahashi, Masashi Yamamura, Kazutoshi Ito, Hikoshi Izumi, Kenji Matsushima, Makoto Iizuka
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Patent number: 6849986Abstract: An end cap 16 for a miniature electric pmdc motor has two fixed brush cages 36, 38 moulded integrally with the end cap and two separate brush cages 40, 42 which are attached to the end cap 16 during the assembly process. The angular separation of the fixed brush cages 36, 38 and the separate brush cages 40, 42 is determined during assembly so that the angle can be adjusted to suit the application of the motor.Type: GrantFiled: November 26, 2003Date of Patent: February 1, 2005Assignee: Johnson Electric S.A.Inventor: Ben To Fan Wong