Carbonaceous Patents (Class 310/253)
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Patent number: 11329439Abstract: A brush for an electric machine includes at least one brush body having an electrical resistance, which is configured to electrically contact at least one component moving relative to the brush body during operation of the electric machine, and which sustains wear during the operation of the electric machine along a wear direction, as a result of friction contact with the component. The brush includes a detection device configured to determine wear of the brush body, where the detection device comprises a plurality of detection zones which are mutually spaced apart along the wear direction, the respective electrical resistance of which differs from the electrical resistance of the brush body.Type: GrantFiled: November 7, 2019Date of Patent: May 10, 2022Assignee: Bayerische Motoren Werke AktiengesellschaftInventors: Markus Laemmermann, Robert Wagner
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Patent number: 10087927Abstract: A pump assembly includes an electric motor and different selectable pump covers, and is suitable for mounting within a transmission fluid reservoir for transferring automatic transmission fluid. The pump assembly includes a stator housing having a cylindrical cavity for receiving ATF contained in the transmission fluid reservoir. A rotor is rotatably coupled within the cylindrical cavity and has a plurality of magnets arranged about a rotational axis thereof. A flux collector is coupled with the stator housing adjacent to the cylindrical cavity for transferring magnetic flux from one of the plurality of magnets from a first portion to a second portion thereof. A hall sensor is disposed proximate the second portion for sensing magnetic flux in the flux collector, such that the magnetic flux is used to determine a rotated position of the rotor.Type: GrantFiled: April 27, 2015Date of Patent: October 2, 2018Assignee: GHSP, Inc.Inventor: Ryan David Rosinski
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Patent number: 9951442Abstract: The invention relates to a process for producing a composite body (36) having at least one functional layer or for the further use for producing an electronic or optoelectronic component (40, 42, 44). The composite body (36) is in the form of a layer structure and comprises at least one substrate (34), which is in the form of a plate and has at least one planar substrate surface, and at least one substantially polycrystalline or at least one substantially single-crystal layer (38), which comprises at least one compound semiconductor, a ceramic material or a metallic hard material. The process is characterized by the following steps: heating at least part of the planar substrate surface to a temperature of at least 100° C. and at most 550° C.Type: GrantFiled: November 17, 2014Date of Patent: April 24, 2018Assignee: AIXATECH GMBHInventor: Yilmaz Dikme
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Publication number: 20150015111Abstract: The present invention is a sliding contact member, including a powder compact portion that contains an electrically conductive diamond and an electrically conductive binder, and is provided at least on a sliding contact surface of either or both of two sliding contact members slidably in contact with each other. The sliding contact members are applied to DC motors, generators and the like.Type: ApplicationFiled: February 21, 2013Publication date: January 15, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Yoshitaka Uehara, Hirotaka Miwa, Toshikazu Nanbu, Yoshirou Noguchi
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Patent number: 8917008Abstract: The invention relates to an electric machine, in particular a commutator machine (10), the carbon brushes (14) of which cooperate with a commutator (13) to supply the rotor with current, the carbon brushes (14) being continuously provided or provided in layer sections with different additives such as scouring material, lubricants or similar. To achieve a longer service life for the carbon brushes (14), a maximum of half, preferably less than half of all the carbon brushes (14) of the machine have a significant fraction of an additive, said fraction differing from that of the other carbon brushes (14).Type: GrantFiled: May 7, 2009Date of Patent: December 23, 2014Assignee: Robert Bosch GmbHInventors: Michael Bayer, Sven Hartmann
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Patent number: 8847463Abstract: 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 molded 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.Type: GrantFiled: November 25, 2009Date of Patent: September 30, 2014Assignee: Schunk Kohlenstofftechnik GmbHInventors: Henrik Neuweger, Hans Lippert, Thomas Weber, Andreas Reetz
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Patent number: 8648515Abstract: 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.Type: GrantFiled: March 2, 2010Date of Patent: February 11, 2014Assignee: Johnson Electric S.A.Inventors: James Ching Sik Lau, Duncan Yiu Lung Wong, Chang Lin Jin, Yuen Tung Louie
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Publication number: 20130300251Abstract: 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.Type: ApplicationFiled: December 15, 2011Publication date: November 14, 2013Applicants: DENSO CORPORATION, TRIS INC.Inventors: Makoto Nishio, Shinya Nakagawa, Kiyotoshi Oi, Youichi Murakami, Takashi Fukutsuka, Ryouichi Honbo
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Publication number: 20120313479Abstract: 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.Type: ApplicationFiled: February 23, 2011Publication date: December 13, 2012Applicant: ROBERT BOSCH GMBHInventors: Michael Bayer, Matthias Schick
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Patent number: 8040016Abstract: The present invention relates to a brush 10 suitable for coming into contact with conducting plates 12 provided on an electric motor commutator 11. According to the invention, the brush has a means 15 for adjusting its pole coverage between the start of life of the motor and its stabilized operation. This is therefore a brush with pole coverage that can be varied over its operating life. Such a brush is more particularly fitted into a motor for a ventilation (air conditioning) system for motor vehicle.Type: GrantFiled: December 13, 2006Date of Patent: October 18, 2011Assignee: Brose Fahrzeugteile GmbH & Co.Inventors: Eric Fournier, Florence Campagne, Maurad Berkouk
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Patent number: 8035272Abstract: 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 ?m. 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.Type: GrantFiled: August 1, 2005Date of Patent: October 11, 2011Assignees: Asmo Co. Ltd., Hitachi Chemical Company Ltd.Inventors: Shouichi Yoshikawa, Fukumi Akatsu
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Patent number: 8004143Abstract: 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.Type: GrantFiled: November 6, 2006Date of Patent: August 23, 2011Assignees: Mitsuba Corporation, Kunimitsu Carbon Industrial Co., Ltd.Inventor: Iwao Yanagizawa
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Publication number: 20110109192Abstract: The invention relates to an electric machine, in particular a commutator machine (10), the carbon brushes (14) of which cooperate with a commutator (13) to supply the rotor with current, the carbon brushes (14) being continuously provided or provided in layer sections with different additives such as scouring material, lubricants or similar. To achieve a longer service life for the carbon brushes (14), a maximum of half, preferably less than half of all the carbon brushes (14) of the machine have a significant fraction of an additive, said fraction differing from that of the other carbon brushes (14).Type: ApplicationFiled: May 7, 2009Publication date: May 12, 2011Applicant: ROBERT BOSCH GMBHInventors: Michael Bayer, Sven Hartmann
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Patent number: 7859166Abstract: A carbon brush that suppresses a wear amount of a carbon commutator and has less swelling is provided. The carbon brush has a part connected to a lead and is one that slides in contact with a carbon commutator that is used in a fuel pump. The bulk density of the carbon brush is 1.85 g/cm3 or less, and the shore hardness of the carbon brush is 40 or less.Type: GrantFiled: March 24, 2005Date of Patent: December 28, 2010Assignee: Totankako Co., Ltd.Inventors: Daisuke Namikoshi, Fumihiro Hozumi, Shinichi Suzuki, Takahiro Sakoda
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Publication number: 20100133948Abstract: The present invention provides a carbon commutator and a carbon brush for a fuel pump which have excellent slidability and abrasion resistance, and a fuel pump having the carbon commutator and the carbon brush incorporated therein. In the carbon commutator for a fuel pump, at least a contact portion to contact with a brush contains 0.2 to less than 5% by weight of an amorphous carbon. The carbon brush for a fuel pump to contact with and slide on the carbon commutator contains 0.2 to not more than 5% by weight of an amorphous carbon. The fuel pump includes the carbon commutator having the foregoing structure and the carbon brush having the foregoing structure.Type: ApplicationFiled: April 4, 2008Publication date: June 3, 2010Applicant: TOTANKAKO CO., LTD.Inventors: Daisuke Namikoshi, Shinichi Suzuki, Naomi Yamashita, Shigeru Ikuta
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Publication number: 20090322188Abstract: The present invention is used with a stopper mechanism for mechanically stopping the rotation of a motor. A pair of brushes is disposed such that a line which passes through the center of a rotor and connects the centers of the paired brushes is offset by a predetermined angle from a line which connects the centers of paired magnets. A commutator is disposed in such a manner as to be offset from a reference position by the same angle as the predetermined angle by which the paired brushes are offset. The predetermined angle falls within a range between an angle obtained by dividing 70° by the number of pairs of stator poles and an angle obtained by dividing 290° by the number of pairs of stator poles. Specifically, in the case of two stator poles, the predetermined angle falls within a range of 70° to 290° inclusive. In the case of four stator poles, the predetermined angle falls within a range of 35° to 145° inclusive.Type: ApplicationFiled: December 21, 2007Publication date: December 31, 2009Inventors: Hiroshi Yamazaki, Hiroyuki Masutani, Masafumi Momma, Junichi Harano
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Patent number: 7638918Abstract: In a process for attaching a shunt wire to a carbon brush body in which a resin-containing cement is tamped into a cavity in the brush body, an improved cement is used, formed from a mixture of polyphenylene sulfide powder having a grain size of 5 to 50 ?m and copper-based powder. The brush produced thereby is improved in resistance to alcohol-containing fuels.Type: GrantFiled: June 1, 2005Date of Patent: December 29, 2009Assignee: Carbone Lorraine Applications ElectriquesInventor: Arwed Uecker
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Patent number: 7622844Abstract: An electrical brush having at least one conductive element and at least one conditioning material coated on the at least one conductive element wherein the conditioning material has a composition and thickness on the conductive element such that, as deposited on a moving contact surface in the course of brush operation, the conditioning material can have an average film thickness S<˜1 ?m so that current can be conducted by means of electron tunneling through a film thickness of the deposited conditioning material of Si?12 nm thickness over a fractional area fC, greater than 0.01 of a foot print of the conductive element in a current conductive area.Type: GrantFiled: December 29, 2004Date of Patent: November 24, 2009Assignee: Hipercon, LLCInventor: Doris Kuhlmann-Wilsdorf
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Patent number: 7615166Abstract: A motor brush material contains copper particles dispersed and configuring particle group structure supported in inner pores of a sintered body containing carbon as a major component.Type: GrantFiled: March 9, 2009Date of Patent: November 10, 2009Assignee: Aisin Seiki Kabushiki KaishaInventor: Hiroshi Kobayashi
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Publication number: 20090230814Abstract: 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.Type: ApplicationFiled: November 6, 2006Publication date: September 17, 2009Applicants: MITSUBA CORPORATION, KUNIMITSU CARBON INDUSTRIAL CO., LTD.Inventor: Iwao Yanagizawa
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Publication number: 20090189479Abstract: A brush assembly is provided that facilitates a longer usable brush life and permits easy brush assembly replacement. The brush assembly includes an arc-shaped brush and a pivot arm, with the mounting end of the arc-shaped brush bound or otherwise mounted with respect to one end of the pivot arm. The end of the pivot arm that is not bound to the arc-shaped brush typically includes a female cylindrical slot for mating with a male shaft that is prefabricated in the motor housing, parallel to the rotor's axis. When the disclosed brush assembly is installed into an electric motor, the pivot arm slot is slidably positioned onto the shaft in the motor housing, enabling the brush assembly to pivot about the shaft on a plane that is perpendicular to the rotor's axis of rotation. A biasing spring force impels the brush assembly to pivot inward toward the rotor in the longitudinal direction of the brush, and maintains the operating end of the arc-shaped brush in contact with the rotating faces of the commutator.Type: ApplicationFiled: January 25, 2008Publication date: July 30, 2009Applicant: ENERGY CONVERSION SYSTEMS HOLDINGS, LLCInventors: Shepard L. Hockaday, Dan L. Shull, R. Clay Dunigan, Pimol B. Vonkchalee
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Publication number: 20080303373Abstract: 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/cm3 or less, and the shore hardness thereof being 40 or less.Type: ApplicationFiled: March 24, 2005Publication date: December 11, 2008Applicant: TOTANKAKO CO., LTD.Inventors: Daisuke Namikoshi, Fumihiro Hozumi, Shinichi Suzuki, Takahiro Sakoda
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Publication number: 20080278026Abstract: To provide a graphite brush (1) that does not wear easily but has an extended longevity regardless of its operating temperature, and a motor with such graphite brush (1). The graphite brush (1), for supplying electricity to a coil (17) wound around a core (9) provided for a rotor (2) of the motor (10), is formed of sintered compact having porosities at a surface of and inside the sintered compact. The porosities are infiltrated with a liquid having a higher boiling point than that of water.Type: ApplicationFiled: April 2, 2004Publication date: November 13, 2008Applicant: AISIN SEIKI KABUSHIKI KAISHAInventor: Hiroshi Kobayashi
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Publication number: 20080174192Abstract: An electrohydraulic aggregate for converting electric energy into mechanical energy, comprising an electric motor with a stator and with a rotor, comprising magnets or electric windings that produce electromagnetic fields, at least one connecting component for connecting the windings to at least one energy supply, with the connecting component extending through at least one through-hole, the through-hole is provided in an accommodating member accommodating electrohydraulic valves as well as at least one piston pump for the energy supply of a slip-controlled brake system, the piston pump being connected to the electric motor by a gear, and a rotor mounting support comprising at least two spaced rotor bearings, of which at least one so-called A-bearing supports a shaft in the accommodating member, and a so-called B-bearing that is supported in a pot-shaped motor housing.Type: ApplicationFiled: May 12, 2006Publication date: July 24, 2008Applicant: Continental Teves AG & Co. oHGInventors: Dieter Dinkel, Hans-Jorg Feigel
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Publication number: 20080100153Abstract: In an electrical device, in particular a power tool, equipped with a commutator motor, and in an accessory for an electrical device of this kind, a carbon brush shape adapting device is an integral component of the electrical device or of the accessory.Type: ApplicationFiled: October 24, 2007Publication date: May 1, 2008Inventor: Florian Esenwein
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Patent number: 7362030Abstract: A spring device includes of a coil spring case formed of right, left, back and front side plates and a spring receiving plate, a coil spring having a linear spring property, and a spring urging member for urging the coil spring into the coil spring case. A distance between the right and left side plates of the spring case is set a little larger than an outer diameter of the coil spring. A distance between the back and front side pates of the spring case is set about 1.5 to 2 times larger than the outer diameter of the coil spring, and a length of the spring case is set smaller than a free length of the coil spring. The coil spring is deformed and a non-linear spring property is obtained when the coil spring is urged through the spring urging member.Type: GrantFiled: November 20, 2006Date of Patent: April 22, 2008Assignee: Japan Servo Co., Ltd.Inventors: Nubuhiro Ozawa, Takeshi Kirihara, Shinji Ikeda
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Patent number: 7202586Abstract: There is provided an electrical contact member where wear can be reduced. The electrical contact member is characterized by one or both of conductive metal particles and conductive metal fibers, at least outer circumferential surfaces of which have been modified with carbon nanofibers or carbon nanotubes, being disposed in a contact layer through which current flows.Type: GrantFiled: November 26, 2003Date of Patent: April 10, 2007Assignee: Shinano Kenshi Kabushiki KaishaInventor: Masashi Okubo
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Patent number: 7129615Abstract: Disclosed is a metal coated carbon brush having a carbonaceous substrate and a metal coating formed on a surface of the carbonaceous substrate having a mean pore radius of 0.1–2.0 ?m and an accumulative pore volume of 50–600 mm3/g.Type: GrantFiled: April 6, 2004Date of Patent: October 31, 2006Assignee: Totankako Co., Ltd.Inventors: Miyozi Arai, Kazuhiro Takahashi, Masayuki Takuma, Takahiro Sakoda
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Patent number: 7105977Abstract: A metal-graphite brush for supplying electricity to a coil wound around a core provided at a rotor of a motor is made of sintered material having porosities at a surface and inside thereof, and the porosities is infiltrated with a conductive liquid having a boiling point higher than that of water.Type: GrantFiled: August 23, 2005Date of Patent: September 12, 2006Assignee: Aisin Seiki Kabushiki KaishaInventor: Hiroshi Kobayashi
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Patent number: 7094366Abstract: A resin bonded graphite material which is especially suitable for use as an electric contact, and a method for the production of this resin bonded graphite material. According to the invention, the resin-bonded graphite material if formed from a mixture of carbon black containing electro-graphite with a unburned graphite content of RG wherein RG?30 percent by weight, electro-graphite free of carbon black as well as binding agents. The material has a specific electrical resistance Wspec wherein Wspec?3500 ??m, and use of the resin bonded graphite material as an electrical contact makes possible substantial exclusion of radio interference.Type: GrantFiled: November 19, 2002Date of Patent: August 22, 2006Assignee: Schunk Kohlenstofftechnik GmbHInventors: Bettina Hübner, Rainer Sperling, Klaus-Georg Tontsch
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Patent number: 6949863Abstract: A metal-graphite brush comprises a brush body which is made by mixing and molding metal powder and graphite powder. 2 mg to 30 mg as amounts of phosphate ion of at least one of phosphoric acid and a phosphate compound is added to 1 g of the brush body of the metal-graphite brush.Type: GrantFiled: December 24, 2002Date of Patent: September 27, 2005Assignees: Tris Inc., Denso CorporationInventors: Takayoshi Otani, Osamu Takada, Toshio Ishikawa, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita, Kyoji Inukai, Youichi Murakami, Yasuyuki Wakahara, Masami Niimi
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Patent number: 6909219Abstract: Molybdenum disulfide, tungsten disulfide or the like as a solid lubricant and any of alumina, silica, silicon carbide or the like as an abrasive are added to filter graphite. A metal of good electric conductor is coated over the whole surface of a carbon brush material except a part of the carbon brush material to be contacted with a commutator. When the commutator rotates clockwise, a metal coating of the good electric conductor is removed mechanically from at least a part of at least either of a left side surface or a right side surface.Type: GrantFiled: June 15, 2001Date of Patent: June 21, 2005Assignee: Totankako Co., Ltd.Inventors: Kazuhiro Takahashi, Masayuki Takuma, Koji Kuroda
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Patent number: 6787963Abstract: An brush assembly is provided in which electric power losses in brushes 32 are reduced, thereby suppressing an abnormal or excessive rise in temperature of the brushes. A tip end of a lead wire 33 inserted into a corresponding brush 32 in a direction of pressing upon press molding thereof is embedded in the brush in such a manner that it extends over two thirds or more of the length in the pressing direction of the brush 32.Type: GrantFiled: November 27, 2001Date of Patent: September 7, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Toshinori Tanaka, Keiichi Fukazawa, Kei Yonemori, Yusuke Matsui, Kyouhei Yamamoto
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Patent number: 6700292Abstract: A metal-graphite brush has a copper-graphite brush body to which a metal sulfide solid lubricant is added and a lead embedded. Indium is at least added to an interface between the brush body and the lead in a concentration of 0.4-8 wt %.Type: GrantFiled: October 24, 2002Date of Patent: March 2, 2004Assignees: Tris Inc., Denso CorporationInventors: Takayoshi Otani, Mitsuo Ikeda, Yoichi Sakaura, Takahiro Sakamoto, Youichi Murakami, Kyoji Inukai, Yasuyuki Wakahara, Masami Niimi
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Patent number: 6663362Abstract: A fluid pump, in particular for the cooling or heating circuit of a motor vehicle, has a claw pole stator and a rotor that is separated from the claw pole stator by a tube, is immersed in a fluid, and has a vane wheel. Claws (25) of the claw pole stator (21) are an integral component of the tube (11), which is part of a motor housing (2), and the number of mounting steps is thus reduced.Type: GrantFiled: October 30, 2001Date of Patent: December 16, 2003Assignee: Robert Bosch GmbHInventors: Gerd Lentz, Christoph Heier, Juergen Bassler
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Publication number: 20030155837Abstract: A metal of good electric conductor is coated over the whole surface of the carbon brush material comprising molybdenum disulfide, tungsten disulfide or the like as a solid lubricant and any of alumina, silica, silicon carbide or the like, except a part of the carbon brush material to be contacted with a commutator. At least a part of at least either of side surfaces of the carbon brush orthogonal to a rotation direction of the commutator is formed as an area in which a metal coating of good electric conductor is not formed and from which the carbon brush material is exposed.Type: ApplicationFiled: April 7, 2003Publication date: August 21, 2003Inventors: Kazuhiro Takahashi, Masayuki Takuma, Koji Kuroda
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Patent number: 6268679Abstract: The invention relates to carbon brushes for electrical machines with commutator in a vehicle with a 36 volt electrical system. According to the invention, the specific electrical resistance of a carbon brush that can be used in a starter motor is greater than 1,000 &mgr;&OHgr;cm, the specific electrical resistance of a carbon brush that can be used in an auxiliary electric motor or an alternator is greater than 10,000 &mgr;&OHgr;cm, and the specific electrical resistance of a carbon brush that can be used in a fuel pump motor is greater than 20,000 &mgr;&OHgr;cm.Type: GrantFiled: February 28, 2000Date of Patent: July 31, 2001Assignee: Deutsche Carbone AGInventors: Conrad Reynvaan, Emmanuel Joly
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Patent number: 6232694Abstract: This invention relates to improvements in electric power systems for aircraft and, more particularly, to such systems which provide both starter and generator functions. The present invention has particular applicability to starter generators for helicopters having a body with an end bell, a commutator head assembly and a fan cover assembly, and wherein the starter generator does not have an end bell that permits air to exhaust through said end bell. The starter generator of the present invention has a commutator head assembly having a frame with a top end and a base end, the top end being adapted to fit within the fan cover assembly and be retained therein by a suitable means, the commutator head assembly having with a plurality of slots that are designed to exhaust air flow passing over one or more brushes in the starter generator.Type: GrantFiled: July 1, 1999Date of Patent: May 15, 2001Inventor: John Leslie
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Patent number: 6068926Abstract: The invention relates to a carbon brush, which is impregnated with a modified siloxane.Type: GrantFiled: July 14, 1997Date of Patent: May 30, 2000Assignee: Schunk Kohlenstofftechnik GmbHInventors: Rainer Sperling, Harald Friedrich, Gunter Schardt
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Patent number: 5843567Abstract: There is disclosed an electrical component having an axial direction and two ends for making electrical contact with another component comprising a plurality of electrically conductive fibers in a matrix, the plurality of the fibers being oriented in the matrix in a direction substantially parallel in the axial direction of the component and being continuous from one end of the component to the other end to provide a plurality of electrical point contacts at each end of the component, wherein the component further includes magnetic particles.Type: GrantFiled: June 3, 1997Date of Patent: December 1, 1998Assignee: Xerox CorporationInventors: Joseph A. Swift, Ronald F. Ziolo, Stanley J. Wallace
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Patent number: 5701046Abstract: The process comprising the charging into a mould (3) of at least one electrically conductive powder (4), the compression by means of a piston (5) of the contents of the mould to form a crude brush (7), the heat treatment of said crude brush (7) as well as the fixing of the ends of the electrical conductors (2), characterised in that the charging involves at least the simultaneous introduction of at least two conductive powders (4B, 4A and/or 4C . . . ) for obtaining a brush formed by integral blocks (1B, 1A and/or 1C . . . ), the junction (1AB and/or 1BC . . . ) between said blocks being orientated at least in part in the compression direction (13).Type: GrantFiled: August 16, 1994Date of Patent: December 23, 1997Assignee: Le Carbone LorraineInventors: Eric Kammerer, Lothar Biering, Erhard Grohs, Klaus Groht, Conrad Reynvaan, Horst Siegmund, Jorgen Spangenberg, Arwed Uecker
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Patent number: 5488261Abstract: The invention relates to a carbon brush (10) with a braided indicator wire (26), (28) for indicating a defined wear of the carbon brush. The braided indicator wire is embedded in a blind bore (30), and is disposed spaced apart from the bottom (32) of the blind bore. To assure an exact indication of the wear of the carbon brush, the bottom of the blind bore is covered with a layer (40) consisting of an insulating material.Type: GrantFiled: May 11, 1994Date of Patent: January 30, 1996Assignee: Schunk Kohlenstofftechnik GmbHInventors: Anton Swoboda, Edmund Kubler, Horst Ulm, Gunter Schardt
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Patent number: 5365136Abstract: Brush for electric motors obtained by compression of an electrically conductive powder containing one end of an electrical conductor so as simultaneously to allow the formation of the brush and the mechanical fixing of said electrical conductor, and characterized in that the density of at least a portion of the compressed powder in contact with the end of the immersed electrical conductor is higher than the mean density of the compressed powder so as to improve the strength of said mechanical fixing when said brush is subjected to vibrations.Type: GrantFiled: May 3, 1993Date of Patent: November 15, 1994Assignee: Le Carbone LorraineInventor: Jean-Bernard Deboves
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Patent number: 5354607Abstract: Static eliminator device includes a nonmetallic pultruded composite member having a plurality of conductive carbon fibers provided within a polymer matrix of thermosetting resin, wherein the plurality of carbon fibers are oriented within the polymer matrix in a longitudinal direction of the pultruded composite member and extend continuously therethrough. The pultruded composite member has at least one laser fibrillated end including a brush-like structure of densely distributed filament contacts formed from an exposed length of the carbon fibers for contact with the surface. The brush-like structure has either a straight edge configuration or a shaped configuration. The static eliminator device may include a base member for holding the pultruded composite member, wherein the base member electrically communicates with the plurality of conductive fibers to permit the electrical charge to pass therefrom.Type: GrantFiled: February 24, 1993Date of Patent: October 11, 1994Assignee: Xerox CorporationInventors: Joseph A. Swift, Thomas E. Orlowski, Stanley J. Wallace, Wilbur M. Peck, John E. Courtney, David E. Rollins
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Patent number: 5285126Abstract: A press-molded collector shoe having a body made of a first carbon piece, and a layer disposed on a side thereof made of a second, less conductive carbon piece. The second piece covers only a portion of the side of the collector shoe. An electrical lead projects from a portion of the side which is not covered by the second piece. During the production of the collector shoe the surface layer is pre-pressed in a separate step and the first carbon piece into which the lead wire is imbedded and the second piece are then pressed together.Type: GrantFiled: June 18, 1991Date of Patent: February 8, 1994Assignee: Hoffmann & Co. Elektrokohle KGInventors: Peter Hoffmann, Johann Hoell
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Patent number: 5177529Abstract: An electrostatographic printing machine comprising a main frame and at least one unit insertable into and removable from said main frame for cooperative association therewith in producing prints, said main frame and said removable unit having at least one electrical connection to conduct electric current therebetween comprising two electrical contacting elements, one on each of said main frame and said removable unit a first element comprising a plurality of resiliently flexible conductive fibers arranged in a brush-like configuration and the second element comprising a substantially continuous conductive contact surface for electrical contact with said brush each of said contacting elements being connected to an electrical component.Type: GrantFiled: November 25, 1988Date of Patent: January 5, 1993Assignee: Xerox CorporationInventors: Ross E. Schroll, Jeffrey J. Folkins
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Patent number: 5139862Abstract: An electronic device for conducting electric current has two contacting components at least one of which is a nonmetallic electronic contact in the form of a pultruded composite member made of a plurality of small generally circular cross section conductive fibers in a polymer matrix, the fibers being oriented in the matrix in a direction substantially parallel to the axial direction of the pultruded composite member and being continuous from one end of the member to the other to provide a plurality of electrical point contacts at each end of the member.Type: GrantFiled: December 11, 1991Date of Patent: August 18, 1992Assignee: Xerox CorporationInventors: Joseph A. Swift, Stanley J. Wallace, Wilbur M. Peck
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Patent number: 4739209Abstract: A starter-generator brush has first and second juxtaposed carbon wafers. A first copper plate is provided on a recessed back surface of the first carbon wafer. A first electrically conductive hammer place has a first copper back plate on a recessed back surface of the second carbon wafer and a first top plate extending from the first back plate at an acute angle therewith. First and second solid copper rivets extend through the first copper plate and first and second side holes of the first carbon wafer and affix the first copper plate to the first wafer with the first copper plate in juxtaposition with the back surface of the first wafer. Brush pigtails are accommodated in first and second top holes of the first wafer and have a first end in electrical contact with the first and second solid copper rivets.Type: GrantFiled: October 6, 1986Date of Patent: April 19, 1988Assignee: Aircraft Parts Corp.Inventor: Seymour Sherman
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Patent number: 4605581Abstract: A carbon current collection brush having improved wear characteristics and exhibiting a relatively low coefficient of friction at its sliding contact surface (e.g., with a commutator or slip ring) is made by impregnating a brush blank with a solution containing an organometallic compound and an organic resin. The thereby impregnated brush blank is then cured to remove volatiles and retain approximately one to nine percent, by weight, of the organometallic compound and the organic resin in the brush blank.Type: GrantFiled: August 20, 1985Date of Patent: August 12, 1986Assignee: General Electric CompanyInventors: Robert W. Stevens, Mark Markovitz
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Patent number: 4461689Abstract: A method and apparatus for coating a member of graphite with a thin layer of an electrically highly conductive material from the vapor phase in which at least part of the material is deposited on the graphite member by ion plating to result in particularly well adhering and relatively thick layers of the materials being deposited on the graphite members.Type: GrantFiled: June 20, 1978Date of Patent: July 24, 1984Assignee: Siemens AktiengesellschaftInventor: Heinrich Diepers