Brush Affixed To Pivoted Arm Patents (Class 310/244)
  • Patent number: 9570963
    Abstract: The present invention relates to a brush cover for a brush-commutated electric motor. The brush cover comprises at least one lever brush which is mounted rotatably about an axis at the brush cover by means of a bolt. According to the invention, the bolt is surrounded, at least in sections, by at least one damping sleeve of an elastomer.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: February 14, 2017
    Assignee: MAXON MOTOR AG
    Inventors: Arnold Teimel, Reto Walker, Dirk Uhlich
  • Patent number: 9203290
    Abstract: A pitch drive device for a wind power or hydroelectric power station having a synchronous motor and a motor operation switchover unit for switching between a normal operation and emergency operation modes. To do so, the synchronous motor is operable in normal operation with three-phase AC and in emergency operation with DC. A method for operating a pitch drive device of this type is also disclosed.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: December 1, 2015
    Assignee: MOOG UNNA GMBH
    Inventor: Tobias Roesmann
  • Patent number: 8952592
    Abstract: A motor assembly for a direct current (DC) electric motor, including: a motor cover, a brush base, brush arms and a chip capacitor housed within a protective hollow space provided in the brush base. The brush arms are shaped to support or hold the capacitor within the hollow space and maintain a solderless electrical connection between the terminal ends of the capacitor and the brush arms. The capacitor filters electromagnetic noises in the motor input circuit.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: February 10, 2015
    Assignee: New Bright Industrial Co., Ltd.
    Inventor: Keung Lee
  • Patent number: 8952593
    Abstract: A motor assembly for a direct current (DC) electric motor, including: a motor cover, a brush base, brush arms and a chip capacitor housed within a protective hollow space provided in the brush base. The brush arms are shaped to support or hold the capacitor within the hollow space and maintain a solderless electrical connection between the terminal ends of the capacitor and the brush arms. The capacitor filters electromagnetic noises in the motor input circuit.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: February 10, 2015
    Assignee: New Bright Industrial Co., Ltd.
    Inventor: Keung Lee
  • Patent number: 8836198
    Abstract: A brush holder of the present invention is formed by a plurality of brush holder units in serial connection. Each brush holder unit includes an insulating base, a brush frame, and two carbon brushes. The insulating base has a protrusion and a recess on opposite sides. The brush frame has a main body received in the recess and two branches projected from opposite ends of the main body. The carbon brushes are provided on the branches of the brush frame. The protrusion of the brush holder unit is inserted into the recess of another brush holder unit to serially connect the brush holder units as well as to secure the brush frame in the recess. Therefore, the brush holder may be formed by serially connecting the brush holder units in a fast and easy way, and it provides a stable signal transmission.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: September 16, 2014
    Assignee: Taiwan Long Hawn Enterprise Co.
    Inventors: Meng-Chiu Yu, Su-Chen Liao
  • Patent number: 8674581
    Abstract: 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.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: March 18, 2014
    Assignee: General Electric Company
    Inventors: Thiago Arouca Toledo, Nelson Kawasaki, Radhakrishna Darbha
  • Patent number: 8618713
    Abstract: A brush holder apparatus is disclosed. In one embodiment, the brush holder apparatus includes: a first support member; a second support member affixed to the first support member; a brush retainment member affixed to the first support member and extending substantially parallel with the second support member; and a cam member operably connected to the second support member, the cam member configured to retain a brush against the brush retainment member.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: December 31, 2013
    Assignee: General Electric Company
    Inventors: Michael David Kuban, Paul August Quail, Albert Eugene Steinbach
  • Patent number: 8558429
    Abstract: Systems, methods, and apparatus associated for lifting brushes and shorting slip rings are provided. One embodiment may include an actuating mechanism in operable communication with multiple brushes and a plurality of electrical contacts. Each of the brushes may be adapted for selective contact with a respective slip ring of an induction motor. The electrical contacts may be in electrical communication with respective terminals of rotor windings of the induction motor. When the actuating mechanism is actuated, at least a portion of the electrical contacts create electrical shorts between at least a portion of the slip rings and the rotor windings of the induction motor. When the actuating mechanism is actuated, at least a portion of the brushes are lifted from contacting the plurality of slip rings.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: October 15, 2013
    Assignee: General Electric Company
    Inventors: Thiago Arouca Toledo, Nelson Kawasaki, Radhakrishna Darbha
  • Patent number: 8427028
    Abstract: These and other objects of the present invention are achieved by a brush holder assembly for an electric motor or generator wherein the brush box or holder is arcuate and curved in relationship to a commutator and supports a brush means and a floating constant force spring which allows dynamic movement and control of the brush as it moves towards a commutator.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: April 23, 2013
    Inventor: Roger Clemente
  • Patent number: 8395297
    Abstract: An electric machine has at least two pairs of carbon brushes made up of one plus and one minus carbon brush, which interact with a commutator in order to supply current to the rotor, the carbon brushes being mounted with their brush holder on a brush plate via a mount, and the mounts on the brush plate lying across from each other at 180°. The holding part on at least one brush holder is offset from the center, in particular from the axis of symmetry of the brush holder, by an angle relative to the rotor axis so as to realize an asymmetrical placement of the carbon brush, the holding part on the other brush holders being disposed on their axes of symmetry.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: March 12, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Michael Bayer, Gerlinde Gerschwitz
  • Publication number: 20130057109
    Abstract: A brush holder of the present invention is formed by a plurality of brush holder units in serial connection. Each brush holder unit includes an insulating base, a brush frame, and two carbon brushes. The insulating base has a protrusion and a recess on opposite sides. The brush frame has a main body received in the recess and two branches projected from opposite ends of the main body. The carbon brushes are provided on the branches of the brush frame. The protrusion of the brush holder unit is inserted into the recess of another brush holder unit to serially connect the brush holder units as well as to secure the brush frame in the recess. Therefore, the brush holder may be formed by serially connecting the brush holder units in a fast and easy way, and it provides a stable signal transmission.
    Type: Application
    Filed: September 7, 2011
    Publication date: March 7, 2013
    Applicant: TAIWAN LONG HAWN ENTERPRISE CO.
    Inventors: Meng-Chiu Yu, Su-Chen Liao
  • Patent number: 8319383
    Abstract: A brush assembly applied to a motor includes a body portion attachable to a lower case, and an external connection substrate formed by a flexible substrate. A pair of brush pieces protrude from a front end of the body portion so as to be in contact with brush slide portions of commutator segments. The external connection substrate has a pair of terminals exposed from a housing and capable of being connected to spring terminals of an apparatus by crimping. The terminals are provided at a rear end of the external connection substrate, and protrude from the housing in the radial direction. First connecting portions electrically connected to the brush pieces are provided at a rear end of the body portion, and a pair of right and left second connecting portions are provided at a front end of the external connection substrate.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: November 27, 2012
    Assignee: Nidec Copal Corporation
    Inventors: Takeshi Iizawa, Hideaki Nakamura, Yoshihide Tonogai, Yoshinori Kawai
  • Patent number: 8288905
    Abstract: A motor for HVAC applications, has a stator; a motor housing forming a part of the stator; an end cap fixed to the motor housing, and a rotor rotatably mounted confronting the stator. The end cap has an opening formed by a ring-shaped collar, the collar being at least partly disposed inside the motor housing. A plurality of projections on an outer circumferential surface of the collar are received in a plurality of receiving cutouts in the motor housing. Two fingers formed at the opening of each receiving cutout are deformed to lock the received projection inside the respective receiving cutout. At least three of the projections being pressed against the axially inner end of the respective receiving cutout.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: October 16, 2012
    Assignee: Johnson Electric S.A.
    Inventors: Rui Feng Qin, Fa Yun Qi
  • Patent number: 8129879
    Abstract: Connector side terminals 43b and 44b protruding from a connector portion 36, and front-side and back-side power supply terminals protruding from the holder main body 34 are provided to first and second lead plates 43 and 44 formed by metal plates with a conductive property, and they are embedded into a brush holder 31 formed integrally with the connector portion 36 and a holder main body 34 via a coupling portion 35. The connector side terminals 43b and 44b are disposed so as to match their width directions with an axial direction of a commutator 23 and to be mutually aligned in the width directions, and the main body portions 43a and 44a are twisted perpendicularly to the connector side terminals 43b and 44b with reference to their axes at a base end of the connector portion 36, and are disposed in the coupling portion 35 so as to match their thickness directions with the axial direction of the commutator 23 and to be mutually aligned in the width directions.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: March 6, 2012
    Assignee: Mitsuba Corporation
    Inventor: Hiroyuki Uchimura
  • Patent number: 8049392
    Abstract: An apparatus for holding a brush in contact with a moving conductive surface, the apparatus includes: a rotatable member disposed adjacent to the brush; and a spring coupled to the brush and to the member and configured to bias the brush towards the moving conductive surface; wherein the rotatable member in a first position makes contact with the brush to secure the brush from movement and in a second position releases the brush from the contact to allow the spring to hold the brush in contact with the moving conductive surface.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: November 1, 2011
    Assignee: General Electric Company
    Inventors: Paul August Quail, Albert Eugene Steinbach
  • Patent number: 8040016
    Abstract: 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: Grant
    Filed: December 13, 2006
    Date of Patent: October 18, 2011
    Assignee: Brose Fahrzeugteile GmbH & Co.
    Inventors: Eric Fournier, Florence Campagne, Maurad Berkouk
  • Patent number: 7994682
    Abstract: Each of the paired brush devices includes a brush in sliding contact with a commutator, a brush arm holding the brush, and a brush base to which the brush arm is fixed and which has a base hole. The pair of brush devices are disposed such that a line connecting the centers of the pair of brushes inclines in relation to a line connecting the centers of a pair of magnets. Each of the brush arms of the brush devices is disposed on the outside of the corresponding brush base at a location where the brush arm is fixed to the brush base, and one of the brush arms is bent from the outside of the corresponding brush base toward the inside thereof while being passed through the base hole to intersect the brush base.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: August 9, 2011
    Assignee: Mabuchi Motor Co., Ltd.
    Inventors: Ryoichi Kimura, Yukio Takahashi
  • Patent number: 7982357
    Abstract: A brush holder assembly for a dynamo-electric machine includes a brush fixture snap-fittingly secured to a shielding fixture. A brush member is moveably mounted within the brush fixture and includes a recessed region, and a shunt member. The shunt member includes a first end operatively connected to the brush member at the recessed region that extends through an intermediate region to a second end. A constant force spring is operatively connected between the second end section of the brush and the brush fixture. The brush holder assembly also includes a shunt retainer mounted in the brush fixture abutting the brush member. The shunt retainer includes a first leg portion, a second leg portion and a base portion. The shunt retainer is configured to maintain proper alignment of the constant force spring and prevent entanglement of the shunt member.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: July 19, 2011
    Assignee: Remy Technologies, L.L.C.
    Inventors: Curtis Harris, Michael McCord, Christopher H. Hunt
  • Patent number: 7973448
    Abstract: A brush holder having brush holding portions and coil holding portions is disclosed. Each brush holding portion holds a brush such that the brush is slidable on a commutator attached to a rotary shaft. Each coil holding portion holds a choke coil electrically connected to one of the coils. The brush holder includes a holder base member and brush holding members that are assembled to the holder base member so as to form the brush holding portions. Each brush holding member includes a coil supporting portion, which forms the coil holding portion between the corresponding brush holding member and the holder base member.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: July 5, 2011
    Assignee: ASMO Co., Ltd.
    Inventors: Shingo Omori, Nobuo Mizutani
  • Patent number: 7960891
    Abstract: A power tool has an electric motor that includes a commutator, with which at least one commutator brush is acted upon with spring force via at least one commutator spring in the direction of a non-rotatable collector of the commutator. At least one auxiliary tool for adjusting the commutator spring is located on a component of the power tool.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: June 14, 2011
    Assignee: Robert Bosch GmbH
    Inventor: Florian Esenwein
  • Patent number: 7923892
    Abstract: A switch for a recording circuit used to determine brush wear of an electrical brush comprises a flag having a first end and a second end defining distal ends of the flag. The flag is mounted on the electrical brush at the first end so as to move in unison with brush wear while being in electrical communication with the electrical brush and has a piercing feature on the second end. The switch further comprises a contact plate arrange relative to the flag so as to bring the flag in contact with the contact plate at a predetermined brush wear and includes an inner conductive core encased by a cover forming an outer layer of the contact plate, wherein the piercing feature is configured to penetrate the cover and to contact the conductive core to cause electrically continuous contact between the flag and the contact plate and close the switch.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: April 12, 2011
    Assignee: Alstom Technology Ltd
    Inventors: Bernhard Mark, Max Hobelsberger
  • Publication number: 20110050032
    Abstract: A brush assembly applied to a motor includes a body portion attachable to a lower case, and an external connection substrate formed by a flexible substrate. A pair of brush pieces protrude from a front end of the body portion so as to be in contact with brush slide portions of commutator segments. The external connection substrate has a pair of terminals exposed from a housing and capable of being connected to spring terminals of an apparatus by crimping. The terminals are provided at a rear end of the external connection substrate, and protrude from the housing in the radial direction. First connecting portions electrically connected to the brush pieces are provided at a rear end of the body portion, and a pair of right and left second connecting portions are provided at a front end of the external connection substrate.
    Type: Application
    Filed: August 24, 2010
    Publication date: March 3, 2011
    Applicant: NIDEC COPAL CORPORATION
    Inventors: Takeshi IIZAWA, Hideaki NAKAMURA, Yoshihide TONOGAI, Yoshinori KAWAI
  • Patent number: 7893592
    Abstract: The invention relates to an electric motor (10) and to a method for producing said electric motor, especially for adjusting mobile parts in a motor vehicle. Said electric motor comprises a collector (36), arranged on an armature (38) and electrically contacted via hammer brushes (12). The armature (38) is surrounded by a lower housing part (32) and an upper housing part (34) which can be assembled in a radial direction (50) in relation to the armature (38). The hammer brushes (12) comprise one fastening element (26) each which engages directly in a seat (30) of the lower or upper housing part (32, 34).
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: February 22, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Hornung, Thomas Huck, Tarek Mili, Armin Niederer, Diyap Bueyuekasik, Lars-Dirk Anding
  • Patent number: 7843105
    Abstract: Electric motor, as well as a brush mount component (34) for positioning of carbon brushes with respect to a commutator (30) of an electric motor (12), having at least one attachment means (55) for fixing the brush mount component (34) on a printed circuit board (28), with an earth contact plate (70) being mounted on the brush mount component (34) and being designed symmetrically with respect to the arrangement of the carbon brushes (32). A method for production of an electric motor such as this is also described.
    Type: Grant
    Filed: October 9, 2006
    Date of Patent: November 30, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Grimm, Ilya Kuperberg, Robert Heitz, Jens Maerkle
  • Patent number: 7768174
    Abstract: Devices and methods of use for brush holder assemblies are disclosed. Brush holder assemblies including a mounting block and a brush holder are disclosed. Also illustrated is a brush holder assembly including a first portion in sliding engagement with a second portion. In some embodiments the brush holder includes a channel, such that at least a portion of the mounting block is disposed within the channel of the brush holder.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: August 3, 2010
    Assignee: Cutsforth Products, Inc.
    Inventors: Robert S. Cutsforth, David L. Cutsforth
  • Patent number: 7723893
    Abstract: A brush assembly may include a support member, a conductive arm having a first end portion and a second end portion, where the first end portion is coupled to the support member, a brush coupled to the second end portion of the conductive arm, and a biasing member configured to apply a force to the conductive arm.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: May 25, 2010
    Assignee: Black & Decker Inc.
    Inventors: Joshua D. West, Brandon L. Verbrugge
  • Patent number: 7600577
    Abstract: A device for sensing a direction of rotation of a hand tool having an electric motor, has a rotatably supported brush plate provided in the electric motor and located in different positions depending on a direction of rotation of the electric motor; and at least one sensor which senses the different positions of said brush plate to determine a direction of rotation, wherein said sensor is configured as a contactless sensor.
    Type: Grant
    Filed: December 26, 2006
    Date of Patent: October 13, 2009
    Assignee: Robert Bosch GmbH
    Inventors: Robert Simm, Markus Weber, Bernhard Roth
  • Publication number: 20090189479
    Abstract: 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: Application
    Filed: January 25, 2008
    Publication date: July 30, 2009
    Applicant: ENERGY CONVERSION SYSTEMS HOLDINGS, LLC
    Inventors: Shepard L. Hockaday, Dan L. Shull, R. Clay Dunigan, Pimol B. Vonkchalee
  • Patent number: 7564160
    Abstract: Devices and methods of use for brush holder assemblies are disclosed. Brush holder assemblies including a mounting block and a brush holder are disclosed. Also illustrated is a brush holder assembly including a first portion in sliding engagement with a second portion. In some embodiments the brush holder includes a channel, such that at least a portion of the mounting block is disposed within the channel of the brush holder.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: July 21, 2009
    Assignee: Cutsforth Products, Inc.
    Inventors: Robert S. Cutsforth, David L. Cutsforth
  • Patent number: 7545071
    Abstract: A brush holder device includes a brush including an integrally formed engagement portion; a brush arm having an engagement hole formed therein, the engagement hole assuming substantially the same shape as that of the engagement portion of the brush, and including brush contact portions located at laterally opposite edges of the engagement hole; and a holder. The holder has an engagement hole formed therein, the engagement hole assuming substantially the same shape as that of the engagement portion of the brush, and is fixedly attached to the brush arm such that the engagement hole is aligned with that of the brush arm. The engagement portion of the brush is press-fitted into the engagement holes of the holder and the brush arm, which are fixedly attached to each other, to thereby be fixed in place.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: June 9, 2009
    Assignee: Mabuchi Motor Co., Ltd.
    Inventor: Toshiya Yui
  • Publication number: 20090134743
    Abstract: The invention relates to an electric motor (10) and to a method for producing said electric motor, especially for adjusting mobile parts in a motor vehicle. Said electric motor comprises a collector (36), arranged on an armature (38) and electrically contacted via hammer brushes (12). The armature (38) is surrounded by a lower housing part (32) and an upper housing part (34) which can be assembled in a radial direction (50) in relation to the armature (38). The hammer brushes (12) comprise one fastening element (26) each which engages directly in a seat (30) of the lower or upper housing part (32, 34).
    Type: Application
    Filed: August 16, 2006
    Publication date: May 28, 2009
    Inventors: Stefan Hornung, Thomas Huck, Tarek Mili, Armin Niederer, Diyap Bueyuekasik, Lars-Dirk Anding
  • Publication number: 20090072656
    Abstract: The invention relates to a four-pole electric motor drive which has a stator and a rotor. The rotor contains a rotor shaft, a laminated rotor core containing rotor teeth, and a commutator fitted with segments. Furthermore, the drive has a hammer brush holder system which has a frame, brush support arms, one end of each arm having a brush receiver, and the other end of each arm being connected to the frame via a rotatable bearing arrangement, and carbon brushes, each of which is inserted in one of the brush receivers.
    Type: Application
    Filed: September 12, 2008
    Publication date: March 19, 2009
    Applicant: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Wurzburg
    Inventors: Horst Eisert, Sandra Michel, Manfred Striedacher
  • Publication number: 20080315712
    Abstract: A brush assembly may include a support member, a conductive arm having a first end portion and a second end portion, where the first end portion is coupled to the support member, a brush coupled to the second end portion of the conductive arm, and a biasing member configured to apply a force to the conductive arm.
    Type: Application
    Filed: August 26, 2008
    Publication date: December 25, 2008
    Applicant: Black & Decker Inc.
    Inventors: Joshua D. West, Brandon L. Verbrugge
  • Patent number: 7432627
    Abstract: A brush assembly may include a support member, a conductive arm having a first end portion and a second end portion, where the first end portion is coupled to the support member, a brush coupled to the second end portion of the conductive arm, and a biasing member configured to apply a force to the conductive arm.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: October 7, 2008
    Assignee: Black & Decker Inc.
    Inventors: Joshua D. West, Brandon L. Verbrugge
  • Patent number: 7417354
    Abstract: Devices and methods of use for brush holder assemblies are disclosed. Brush holder assemblies including a mounting block and a brush holder are disclosed. Also illustrated is a brush holder assembly including a first portion in sliding engagement with a second portion. In some embodiments the brush holder includes a channel, such that at least a portion of the mounting block is disposed within the channel of the brush holder.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: August 26, 2008
    Assignee: Cutsforth Products, Inc.
    Inventors: Robert S. Cutsforth, David L. Cutsforth
  • Patent number: 7265474
    Abstract: The invention relates to an arrangement for holding and/or guiding and applying power to a carbon brush (16, 18) in the direction of a current-transferring commutator (14) comprising a first spring element (20), which acts upon the side of the carbon brush facing away from the contact surface. To ensure that the carbon brush is supplied with the necessary pressure in the direction of the commutator, it is suggested that a second spring element (52, 56, 56), which supplies power to the carbon brush (16, 18) in the direction of the commutator (14), act upon the first spring element (20).
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: September 4, 2007
    Assignee: Schunk Kohlenstoff-Technik GmbH
    Inventors: Günther Gregor Jeuck, Wolfgang Käsdorf
  • Patent number: 7242127
    Abstract: A brush device having the longitudinal direction of a coil shaped coil spring aligned with the face of a brush holder, in which one end of a support post at the surface of a brush base is formed as a hollow cylinder and a projection at the other end is insert molded into the brush holder. There is a step on the support post. The step and the brush holder receive a cover plate which, when viewed from a direction perpendicular to the face of the brush holder, covers a winding of the coil shaped coil spring. One end of the support post is fixed to the surface of the cover plate by spreading the end of the hollow cylinder of the support post.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: July 10, 2007
    Assignee: Namiki Seimitsu Housebi Kabushikikaisha
    Inventor: Atsushi Okamoto
  • Patent number: 7218028
    Abstract: A brush holder assembly that cannot be assembled incorrectly includes a brush inserted into a brush holder, a block attached to the top of the brush, a spring engaging the block that applies radial pressure to the block and brush, and a hook pin that holds the spring onto the block. The block includes a semicircular indentation that cradles a coiled portion of the spring and includes a slotted hole for receiving a portion of the hook pin as the block is glued to the top of the brush. The hook pin is a loop terminating at a first end that is a straight pin and terminating at a second end that is a hook-shaped loop in which the straight pin end is inserted. Alternatively, a U-shaped spool assembly can be used to engage the coiled portion of the spring to lock it in the indentation in the block.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: May 15, 2007
    Assignee: General Electric Company
    Inventors: Joan Ione Annis, Thomas Edwin VanSchaick, Anthony Rigosu
  • Patent number: 7145279
    Abstract: The invention relates to a support element on which the commutator brushes are each disposed on one curved spiral spring each. Said spring, on its side facing away from the commutator brush in the area of the end of the coil is trapezoid and is braced between an outer stop and an inner stop with its longest edge that corresponds to the longest side of the trapezoid.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: December 5, 2006
    Assignee: Siemens AG
    Inventor: Guenther Bender
  • Patent number: 7141906
    Abstract: Devices and methods of use for brush holders are disclosed. A brush holder assembly including a brush catch and a brush release is disclosed. Also illustrated is a brush holder assembly including a first portion in sliding engagement with a second portion. Sliding engagement of the first portion with the second portion may selectively engage and/or disengage a brush catch with a brush. In some embodiments the brush catch is disengaged from the brush when the brush holder is in a locked position and is engaged with the brush when the brush holder is in an unlocked position. Methods and devices for selectively placing a brush holder in a locked or unlocked position are also disclosed.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: November 28, 2006
    Assignee: Cutsforth Products, Inc
    Inventors: Robert S. Custforth, David L. Cutsforth
  • Patent number: 7122935
    Abstract: Devices and methods of use for brush holders are disclosed. A brush holder assembly including a brush catch and a brush release is disclosed. Also illustrated is a brush holder assembly including a first portion in sliding engagement with a second portion. Sliding engagement of the first portion with the second portion may selectively engage and/or disengage a brush catch with a brush. In some embodiments the brush catch is disengaged from the brush when the brush holder is in a locked position and is engaged with the brush when the brush holder is in an unlocked position. Methods and devices for selectively placing a brush holder in a locked or unlocked position are also disclosed.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: October 17, 2006
    Assignee: Cutsforth Products, INC
    Inventors: Robert S. Custforth, David L. Cutsforth
  • Patent number: 7034430
    Abstract: 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: Grant
    Filed: December 18, 2002
    Date of Patent: April 25, 2006
    Assignee: Cutsforth Products, Inc.
    Inventors: Robert S. Custforth, David L. Cutsforth
  • Patent number: 7015618
    Abstract: 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: Grant
    Filed: September 10, 2004
    Date of Patent: March 21, 2006
    Assignee: K-TEC GmbH
    Inventor: Wolfgang Kasdorf
  • Patent number: 7005774
    Abstract: 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: Grant
    Filed: October 7, 2004
    Date of Patent: February 28, 2006
    Assignee: Rigaku Corporation
    Inventors: Masaru Kuribayashi, Tomohiro Chaki
  • Patent number: 6949862
    Abstract: 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: Grant
    Filed: August 19, 2004
    Date of Patent: September 27, 2005
    Assignee: Johnson Electric S.A.
    Inventor: Georg Strobl
  • Patent number: 6924577
    Abstract: 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: Grant
    Filed: January 13, 2003
    Date of Patent: August 2, 2005
    Assignee: Energy Conversion Systems Holdings, LLC
    Inventors: Otway Archer Southall, Alvin Leon Farthing, Dan L. Shull
  • Patent number: 6922003
    Abstract: 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: Grant
    Filed: May 25, 2004
    Date of Patent: July 26, 2005
    Assignee: Asmo Co., Ltd.
    Inventor: Yasuaki Uchida
  • Patent number: 6836050
    Abstract: A motor with brush includes a rotor having a rotary shaft and a commutator retained at the rotary shaft, two brush sections each having a plane surface in an axial direction of the rotor and in sliding contact with the commutator, and two brush terminals that are integral with the brush sections, respectively. Each of the brush terminals includes a brush connecting section formed in the axial direction of the rotary shaft and having a plane surface that connects to the plane surface of each of the corresponding brush sections, and a bent section that is bent in a direction generally orthogonal to the axial direction of the rotary shaft. The bent section restricts and fixedly positions the brush terminal and the brush section, and the brush terminals connect to external connection members that are provided outside the motor and inside an outer circumference of the motor.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: December 28, 2004
    Assignee: Sankyo Seiki Mfg. Co., Ltd.
    Inventors: Makoto Akabane, Masayuki Katagiri
  • Patent number: 6822366
    Abstract: 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: Grant
    Filed: March 18, 2002
    Date of Patent: November 23, 2004
    Assignee: Johnson Electric S.A.
    Inventor: Georg Strobl
  • Patent number: 6809455
    Abstract: The invention concerns a commutator device (1) for electric motor, comprising a housing part (2) and commutator brushes (3) housed in the housing part, each brush comprising a contact surface (8) designed to be pressed in contact against a commutator of the rotor of the electric motor, and a spring part (9) connected to the contact part (7) so as to exert a force on said contact part towards the rotor commutator. The device further comprises a damping element (14) arranged to absorb the vibrations or movements of the contact part of the brushes. The damping element (14) is a thixotropic lubricant.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: October 26, 2004
    Assignee: API Portscap
    Inventor: Bernard Vaucher