Electric Patents (Class 188/158)
  • Publication number: 20100243388
    Abstract: An electromechanical brake system and an associated method with a failsafe energy supply, have a first to fourth brake module with at least one control unit and brake actuation unit. In order to supply the modules with electrical energy, the control unit and the brake actuation unit are each connected to at least one main energy supply unit via independently fed lines. In order to supply additional electrical energy to the modules, a first emergency energy supply unit is connected to the control unit and brake actuation unit of the first and fourth brake module and a second emergency energy supply unit is connected to those of the second and third brake module, respectively via additional independently fed lines, wherein the selection of the energy supply unit is made via switches actuated at least partially separately from one another via at least one central control system.
    Type: Application
    Filed: April 29, 2008
    Publication date: September 30, 2010
    Inventor: Jörgen Holzwarth
  • Patent number: 7779971
    Abstract: A speed reducer 32 has an eccentric rotating member 56 which rotates along with a motor shaft 55 of an electric motor 11, an outer gear 57 which is rotatably supported by the outer circumference of the eccentric rotating member 56, an inner gear 58 which is fixedly disposed so as to be coaxial with the motor shaft 55 so as to engage with the outer gear 57, an output member 59 which is connected to an input member 37 of the motion converting mechanism 22 disposed so as to be coaxial with the motor shaft 55 so as to be not relatively rotatable about the input member 37, and an Oldham mechanism 60 which is disposed between the outer gear 57 and the output member 59 so as to transmit only a rotational component of the outer gear 57.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: August 24, 2010
    Assignee: Nissin Kogyo Co., Ltd.
    Inventor: Osamu Adachi
  • Patent number: 7757823
    Abstract: An electric parking brake including a housing, an actuator, a gear box assembly, a driven gear, a spindle, a screw nut, an equalizer through which the spindle is penetrated and the screw nut is rotatably inserted, brake cables connected to opposite sides of the equalizer, respectively, each brake cable having a first end formed with a coupling piece for the connection of the equalizer and a second end connected to an associated one of wheel brake devices, and an emergency release device including cam units and operating levers and adapted to slacken the brake cables in an emergency release situation, so as to release the parking brake. In the case of any emergency situation, such as electric discharge of a vehicle or failure of the parking brake, the parking brake is released by a simple cable pulling action.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: July 20, 2010
    Assignee: Mando Corporation
    Inventor: Jin Young Choi
  • Patent number: 7726748
    Abstract: A method for estimating a force exerted by a first body onto a second body including the steps of providing a motor having at least one detectable motor signal, wherein the motor is adapted to advance the first body into engagement with the second body, determining a first value for the motor signal prior to the first body engaging the second body, determining a second value for the motor signal after the first body engages the second body, and generating a force value based upon a comparison of the second value to the first value.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: June 1, 2010
    Inventor: Jon T. Zumberge
  • Publication number: 20100122875
    Abstract: A ride-on, self-propelled vehicle having front caster wheels, such as a zero-turn mower, includes a front brake system. The actuating power for the front brake pass through a spindle supporting the front caster wheel. In a preferred embodiment, a center shaft of each spindle or a concentric outer ring of a sleeve of each spindle passes a force from a brake actuator to a brake for the respective caster wheel. Actuation of the brake actuator moves a member into frictional contact with a portion of the front wheel or an object attached to the front wheel to applying a braking force.
    Type: Application
    Filed: November 16, 2009
    Publication date: May 20, 2010
    Inventor: Ted H. CORRIHER
  • Publication number: 20100078274
    Abstract: A parking brake mechanism for an air-actuated disc brake includes an electrically powered actuator, an extensible device drivably connected to the electrically powered actuator and able to extend and retract and be held in place in an extended position to thereby apply a brake, and a resilient device arranged to act on the extensible device and maintain a desired level of force to be applied by the parking brake mechanism in the event of contraction of brake components due to cooling.
    Type: Application
    Filed: September 18, 2009
    Publication date: April 1, 2010
    Inventors: Jonathan Leslie Christopher Jackson, Brendan Wilde, Martin Pors Taylor, Ralf Leiter, Paul Roberts, Gareth L. Shaw, Richard Edgar Thompson, Paul Bell, John D. Fieldhouse, Gareth L. Knox, Refaat A. El Malki
  • Publication number: 20100038193
    Abstract: A device (20) has an electrically-operated brake (37) and a manually-operated auxiliary brake (27). The electrically-operated brake includes a coil (70), a core (68), an armature (69), and an alternating series of friction pads (74) and brake disks (75), that are arranged to be compressed between the housing and the armature. The shaft brake (27) includes a collar (22) mounted on en the housing for combined axial and rotative movement relative thereto, a first interlock portion (106,110) mounted on the shaft (24), an annular member (84) surrounding the shaft and having a second interlock portion (85) and a spring (124) urging the member to move toward the shaft. The collar (22) is adapted to be selectively moved relative to the housing between a first portion at which the first (106,110) and second (85) interlock portions are physically engaged with one another, and a second position at which the first (106,110) and second (85) interlock portions are physically separated from one another.
    Type: Application
    Filed: June 12, 2007
    Publication date: February 18, 2010
    Inventors: Marco D. D'Amore, Patrick K. Griffin
  • Publication number: 20090308701
    Abstract: An actuator (10), particularly a brake actuator for a parking brake in a motor vehicle, with a drive element (20, 200), an output element (30, 32, 300), is coupled with the drive element (20, 200) by at least one elastic element (40, 42, 44, 46, 400), a first sensor (60, 600) for detecting a change in the position of the drive elements (20, 200), and a second sensor (62, 620) for detecting a change in the position of the output element (30, 32, 300).
    Type: Application
    Filed: May 22, 2007
    Publication date: December 17, 2009
    Applicant: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Manfred Gaul
  • Publication number: 20090301824
    Abstract: Disclosed is an actuator (11) for electromotively actuating the braking mechanism (22) of a parking brake, especially in a motor vehicle. In order to operate said actuator at low noise even at a high motor speed, the motor (12) of said actuator (11) is provided with a speed reducing element comprising a pinion that preferably has only two teeth and permanently engages with the helical teeth (18) of an intermediate gear (19) as a result of the ribbed shape of the teeth of the pinion, which wind around the pinion shaft (16). The intermediate gear (19), along with a spur toothed pinion (20), directly drives an output gear (21) encompassing the output shaft (14) of the actuator.
    Type: Application
    Filed: March 12, 2007
    Publication date: December 10, 2009
    Applicant: OECHSLER AKTIENGESELLSCHAFT
    Inventors: Stefan Dettenberger, Wilhelm Wolf
  • Patent number: 7630813
    Abstract: A method for controlling a force exerted by an actuator on a load, the actuator being driven by a motor, the method including the steps of modeling the force as a function of at least one parameter, the parameter having an initial value, determining a new value for the parameter, determining an observed force based at least in part upon the new value for the parameter and controlling a positioned of the actuator based at least in part upon the observed force.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: December 8, 2009
    Assignee: Delphi Technologies, Inc.
    Inventor: Rassem Henry
  • Publication number: 20090294226
    Abstract: A driving device for a parking brake system includes a casing shift member, a brake cable and a driving member. The casing shift member includes a cable casing. The brake cable is mounted through the cable casing. The driving member has a driving unit connected to and driving the casing shift member to perform a longitudinal motion. Thus the cable casing applies a force on the brake cable so as to perform a brake work. Because the brake cable is tightened with the force provided by the cable casing, the brake cable is only bent slightly. Thus the curvature of the brake cable is small. That prevents the brake cable from being damaged and prolongs a life span of the brake cable. Moreover, a mechanical efficiency of the driving device is improved because the brake cable is tightened with the force provided by the cable casing.
    Type: Application
    Filed: June 3, 2008
    Publication date: December 3, 2009
    Inventors: Chien-Tai Huang, Chien-Tzu Chen, Shou-Ti Cheng, Bo-Ruei Chen, Ming-Hu Huang
  • Patent number: 7565954
    Abstract: A brake control apparatus for a vehicle having brake devices for generating pad-pressing forces at respective wheels includes brake control units for individually controlling the pad-pressing forces at the respective wheels; a storing unit for storing drive data required for controlling the pad-pressing force at each wheel; a vehicle-driving-state detector for detecting a driving state of the vehicle; and a vehicle controller for controlling a vehicle driving state using the brake control unit for each wheel. Memory data representing the relationship between a motor position and the pad-pressing force is updated using the state of brake actuators obtained when the driving state of the vehicle is stabilized by operating the brake devices during braking.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: July 28, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Yoshinari Kawahara, Tadahiko Nogami, Takaomi Nishigaito, Atsushi Yokoyama
  • Patent number: 7537096
    Abstract: A motor driven brake apparatus is provided for braking a wheel mounted on a knuckle, and includes a brake member rotated integrally with the wheel, a friction member mounted on the knuckle to be capable of being in contact with the brake member, and an electric motor for driving the friction member toward the brake member to be in contact therewith. The motor is adapted to press the friction member onto the brake member to restrain the wheel from rotating. And, a motion converter is accommodated in an opening portion of the knuckle for converting rotating force of the motor into pressing force applied by the friction member onto the brake member. The motion converter is connected to the motor at a side thereof facing the vehicle body, and the motor is mounted on the knuckle.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: May 26, 2009
    Assignee: Advics Co., Ltd.
    Inventors: Haruo Arakawa, Takahisa Yokoyama, Takayuki Takeshita, Chihiro Nitta
  • Patent number: 7527130
    Abstract: A harmonic drive linear actuator includes a first annular member defining a longitudinal axis and lying on a plane, which is perpendicular to the longitudinal axis. The first member is relatively flexible along a direction parallel to the plane. A second member is substantially coaxially aligned with the first member to define opposed substantially cylindrical surfaces and are fixed for non-relative rotation about the longitudinal axis. An actuator is provided for flexing the first annular member into at least two spaced-apart points of contact between the opposed surfaces and for sequentially flexing the first member to rotate the at least two points of contact circumferentially about the axis. The first and second surfaces define cooperating thread-forms thereon, which selectively engage to effect controlled, bidirectional relative axial displacement between the members in response to sequential flexure of the first member.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: May 5, 2009
    Assignee: Delphi Technologies, Inc.
    Inventors: Thomas A. Baudendistel, Harald Klode
  • Patent number: 7516823
    Abstract: An electric braking apparatus including a motor for pressing brake pads on disks, a metal housing for housing the motor, a positive-polarity power line for transmitting power from a battery to the electric motor, a negative-polarity ground line for connecting the electric motor to the ground of a vehicle, and a conductor for electrically connecting the metal housing to the negative polarity of battery or the negative-polarity of an inverter.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: April 14, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Kenji Kikuchi, Yuichi Kuramochi, Yuichi Mabuchi
  • Patent number: 7475760
    Abstract: The invention provides an electric brake system and method. The electric brake system includes an electric motor having a portion moveable along a path between a plurality of positions for moving a brake pad and applying a selectable amount of braking force on a brake rotor. One of the plurality of positions is a minimal contact position. The minimal contact position is operable to change among the plurality of positions over time. The electric brake system also includes an electric controller for controlling the electric motor to move the portion along the path between the minimal contact position and at least one other of the plurality of positions for moving the brake pad and for selecting the amount of braking force. The electric brake system also includes at least one sensor for sensing at least one of motor current, motor acceleration, controller voltage, motor speed, motor voltage, and motor temperature, and communicating a sensed condition to the controller.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: January 13, 2009
    Assignee: Delphi Technologies, Inc.
    Inventors: Pierre Claude Longuemare, Paul Marie Degoul, Jon T. Zumberge, Bryan P. Riddiford
  • Patent number: 7467692
    Abstract: A brake system includes a piston for applying an output force to a brake, a motor operatively connected to the piston and a controller receiving a braking request and sending a brake force signal commanding a level of brake force to the motor to cause the motor to move the piston and apply an output force to the brake. When the brake force signal remains at a first level for a given period of time, the controller automatically decreases, or increases and then decreases, the level of the brake force signal from a first value. Also a method of controlling such a brake system.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: December 23, 2008
    Assignee: Honeywell International Inc.
    Inventor: Russ Ether
  • Patent number: 7445091
    Abstract: An electrically operated brake device in which braking force differences between electrically operated brakes are reduced to prevent unstable vehicle traveling during braking. Motors 13 of electrically operated brakes are returned to standard positions during the stop of a vehicle and the motor 13 of each of the brakes is driven for a predetermined amount, pressing a brake pad 17 against a disc rotor 18 to produce a braking force. An electric current value of each motor 13 in the above operation is measured and differences between the values are calculated. Electric current of each motor is increased or decreased so that there is no current difference between the motors 13. Based on a drive amount of each motor in this operation, standard positions of the motors are determined and updated. Repeating the above operations reduces braking force differences between the brakes.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: November 4, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Yoshinari Kawahara, Kousaku Ohno, Atsushi Yokoyama, Mitsuhide Sasaki
  • Patent number: 7434669
    Abstract: A hydraulic vehicle brake equipped with a parking brake device, in particular for motor vehicles, including a brake housing in which a hydraulic service pressure chamber is delimited by a brake piston, wherein the parking brake device acts on the brake piston and, in the applied condition, can be locked by a locking device, and an energy accumulator cooperating with the brake piston is equipped with at least one integrated spring element. In order to realize a simple and low-cost parking brake function that complies with legal requirements, according to the invention, the parking brake device is operable by a pressure that is introduced into the service pressure chamber and enables charging the energy accumulator.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: October 14, 2008
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Georg Halasy-Wimmer, Lothar Schiel, Rolf Weiler, Jürgen Balz, Peter Schack, Thomas Bauer, Stefan A. Drumm, Andreas Heise, Joachim Scholer, Stefan Johannes Schmitt, Andreas Pohlmann, Thomas Winkler, Volker Knop, Jörn Schriefer, Ralf Hartmann, Karsten Schille, Johannes Görlach, Peter Volz
  • Patent number: 7431133
    Abstract: A method for actuating an electromechanical parking brake device for a brake that can be actuated by an electromechanical actuator comprised of an electric motor and of a reduction gear connected downstream of the electric motor and provided for converting a rotational motion into a translatory motion. In order to guarantee that the electromechanical parking brake device works reliably in all operating states without using a tension force sensor, the method determines and stores, during the actuation of a parking brake device, a mean value of the torque of the electric motor necessary for generating the application force of the brake corresponding to the parking brake actuation and simultaneously determines the actuator position and actuates the electric motor at later points of time in such a way that it generates this torque multiplied by a correction factor k?=>1 so that the exerted tension force is maintained or increased.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: October 7, 2008
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Christof Maron, Georg Roll
  • Patent number: 7424937
    Abstract: A first method for estimating a torque/force exerted by a load against an actuator driven by an electric motor against the load includes measuring motor current of the electric motor and measuring a position/angle or speed/angular speed of the actuator and includes calculating the torque/force exerted by the load against the actuator using at least a difference between a calculated motor torque/force and a calculated actuator-experienced torque/force. A second method includes measuring input voltage of the electric motor instead of measuring motor current. A third method includes measuring both motor current and input voltage. In one example, without limitation, the actuator is an automotive electromechanical brake caliper.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: September 16, 2008
    Assignee: Delphia Technologies, Inc.
    Inventors: Rassem R. Henry, Atef A. Gayed
  • Publication number: 20080210501
    Abstract: A front electric brake assembly for assisting vehicle braking is provided. The front electric brake assembly includes a spindle that includes at least one mounting flange. A shaft extends substantially perpendicular from the spindle. An electric brake mounts to the at least one mounting flange of the spindle. A hub assembly rotates about the shaft and interconnects with the electric brake.
    Type: Application
    Filed: March 2, 2007
    Publication date: September 4, 2008
    Applicant: TEXTRON INC.
    Inventor: Warren Clark
  • Publication number: 20080142318
    Abstract: An electric brake system for an aircraft includes a power interlock mechanism that prevents inadvertent (uncommanded) application of brakes. The interlock removes operating power from the brake mechanisms whenever the brake system sensor data does not indicate a legitimate brake application condition. The interlock processing occurs in parallel with the brake command processing such that even if an inadvertent brake command is generated, the brake mechanisms will be unable to act upon the inadvertent brake command.
    Type: Application
    Filed: December 13, 2006
    Publication date: June 19, 2008
    Inventors: T. Todd Griffith, Erik Godo
  • Publication number: 20080135358
    Abstract: A brake actuator has a motor that provides input rotation in first and second directions. A reducer couples to the motor and reduces the input rotation into an output rotation to be applied to a brake screw of a progressive cavity pump drive. A sensor measures rotational speed of the drive shaft. In manual operation, an operator can view an indication of the rotational speed and can manually operate the motor accordingly to control rotation of the shaft. In automated operation, a controller automatically controls the motor based on the rotational speed measured by the sensor. The controller can also use a torque sensor to detect the torque applied to the brake screw, a displacement sensor to detect displacement of the brake screw, and/or a current sensor to detect the current consumption of the motor.
    Type: Application
    Filed: December 3, 2007
    Publication date: June 12, 2008
    Applicant: WEATHERFORD INDUSTRIA E COMERCIO LTDA
    Inventors: JORGE ROBLES VILLA, EDUARDO PERDOMINI LARA
  • Publication number: 20080135356
    Abstract: A transmission motor structure includes a motor, an interruption device, and a transmission mechanism; the interruption device includes a bearing positioned around an output shaft of the motor, and a pressing plate secured to the output shaft; the transmission mechanism includes a main drive wheel connected to the output shaft, and a driven wheel connected to a moving element of a moving apparatus; the pressing plate of the interruption device is tightly pressed against the main drive wheel; when the motor is running, the pressing plate will make the main drive wheel rotate together with it owing to frictional force between them, thus causing displacement of the moving element of the moving apparatus; the pressing plate will begin to rub on the main drive wheel, producing warning sound with the motor running idly, when the moving element is moved to one of its extreme positions, and the driven wheel stopped.
    Type: Application
    Filed: December 6, 2006
    Publication date: June 12, 2008
    Inventor: Yungh-Siang Lin
  • Publication number: 20080135357
    Abstract: The invention relates to an electromechanical braking system, especially for a motor vehicle comprising a 12V/14V on-board supply system. Said braking system comprises a brake actuator unit provided with an electric motor for generating a braking force, and a power supply for the electric motor, said power supply comprising a first electrical energy source, especially an accumulator of an on-board supply system. The power supply of the electric motor also comprises at least one capacitive energy source which is mounted in parallel to the first energy source. The invention further relates to an electromechanical braking system and a motor vehicle, especially a private car, comprising an electromechanical braking system.
    Type: Application
    Filed: November 11, 2005
    Publication date: June 12, 2008
    Inventor: Hans Lang
  • Patent number: 7383928
    Abstract: A parking brake for a vehicle, including a parking brake unit, an actuating device situated inside the vehicle and operable to transmit an actuation signal to a control unit, a hydraulic circuit of a service brake of the vehicle connected to the parking brake unit, and an actuator and locking device for locking the parking brake in a braking position; the parking brake is actuatable by means of the hydraulic circuit and the actuator is a brake booster of the service brake.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: June 10, 2008
    Assignee: Robert Bosch GmbH
    Inventor: Cedric Leboisne
  • Publication number: 20080110704
    Abstract: An electric direct-acting actuator is proposed which can maintain a large power increasing function without mounting a separate speed reducer. A plurality of planetary rollers 7 are disposed between the radially outer surface of a rotor shaft 5 of an electric motor and the radially inner surface of an outer ring member 1 fixed in position around the rotor shaft 5 so as to be rotatable about the rotor shaft 5 and about their own axes when the rotor shaft 5 rotates. A helical rib is defined by a rib member 9 engaged in a helical groove 8 formed in the radially inner surface of the outer ring member 1. The helical rib is engaged in circumferential grooves 10 formed in the radially outer surface of each planetary roller 7 at the same pitch as the turns of the helical rib. Thus, the rotary motion of the rotor shaft 5 is converted to a linear motion of the planetary rollers 7, so that it is possible to ensure a large power increasing function without mounting a separate speed reducer.
    Type: Application
    Filed: January 12, 2006
    Publication date: May 15, 2008
    Inventor: Tsugito Nakazeki
  • Patent number: 7354372
    Abstract: An electric actuator for an automatic transmission includes an adapter to transmit rotary motion between the adapter and the automatic transmission. An electric motor has an output shaft operably connected to the adapter by a gear set which includes a ring gear. The gear set reduces speed and increases torque supplied by the output shaft of the electric motor and applied to the adapter. A release mechanism is operably connected to the gear set and includes a lock member movable between a first position wherein the lock member is in engagement with the ring gear to lock the ring gear against rotary motion in both directions and a second position wherein the lock member is out of engagement with the ring gear to permit rotary motion of the ring gear in both directions.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: April 8, 2008
    Assignee: Dura Global Technologies, Inc.
    Inventor: Yong Qiang Wang
  • Patent number: 7347304
    Abstract: A vehicle brake system includes a brake actuator, a brake controller operative to control the brake actuator, and at least one position sensor which senses a current position of at least one moveable brake component and provides a current position signal indicative of the current position of the at least one moveable brake component to the brake controller. The brake controller is operative to cause actuation of the brake actuator based at least in part upon a position indicative command received by the brake controller indicative of a commanded position of the at least one moveable brake component and at least in part based upon the current position signal.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: March 25, 2008
    Assignee: Haldex Brake Products AB
    Inventors: Peter Nilsson, Ola Nockhammar
  • Publication number: 20080059023
    Abstract: An electric braking apparatus which first moves a piston in a detaching direction or passes a current to move the piston in the detaching direction in order to detect a pad contacting position. Furthermore, while the piston moves in the detaching direction, pad non-contact judgment is performed. After a pad non-contact state is confirmed, the piston is moved in a pressing direction to detect the pad contacting position. When the piston does not move in the detaching direction, it is judged that a parking brake has an ON-state, and it is waited until a host system instructs parking brake release.
    Type: Application
    Filed: August 8, 2007
    Publication date: March 6, 2008
    Applicant: Hitachi, Ltd.
    Inventors: Kentarou UENO, Mitsuhide Sasaki, Hirotaka Oikawa, Tohma Yamaguchi, Hiroki Takeda
  • Publication number: 20080048596
    Abstract: An electric braking apparatus having a conversion mechanism for generating a force for pressing or separating a brake friction member based on a rotational torque generated by an electric motor, wherein a rotor angle position state of the electric motor and a brake process of the brake friction member which is pressed or separated are detected from rotational information of a rotational information obtaining unit, it is detected that the electric motor has reached a predetermined rotational state based on the detected value, and a relationship between a pressure command and the rotor angle position of the electric motor is corrected based on the current value information of the electric motor.
    Type: Application
    Filed: August 8, 2007
    Publication date: February 28, 2008
    Applicant: Hitachi, Ltd.
    Inventors: Yasufumi KONISHI, Satoru Kuragaki
  • Patent number: 7325658
    Abstract: An actuating unit for an electromechanically actuatable disk brake for motor vehicles consists essentially of a drive unit (1), i.e., an electric motor (11); an actuating element (7), by means of which one (4) of two friction linings (4, 5) mounted with limited freedom of movement in a brake caliper can be brought into engagement with a brake disk (6); and a first and a second reducing gear (2, 3). An electronic controller (8), which serves to drive the electric motor (11), is assigned to the actuating unit. To realize an actuating unit of compact axial dimensions which is also optimally designed with respect to packaging, at least part of the electronic controller (8) is mounted between the electric motor (11) and the housing (25) which holds the second reducing gear (3).
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: February 5, 2008
    Assignee: Continental Teves AG & Co., oHG
    Inventors: Georg Halasy-Wimmer, Paul Linhoff, Bernhard Schmittner, Jürgen Fölkel, John Miessner
  • Patent number: 7285927
    Abstract: A relay switch for selectively connecting a power supply line of an inverter to a ground line is inserted between the inverter and a power source, and a power consumption unit such as a resistor element is inserted between the relay switch and ground line.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: October 23, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Yuichi Kuramochi, Toshio Manaka
  • Patent number: 7267209
    Abstract: The present invention relates to an electromechanically operable disc brake for motor vehicles comprising a brake caliper and an actuator arranged at the brake caliper, with two friction linings cooperating with each one lateral surface of a brake disc, with at least one of the friction linings being movable into engagement with the brake disc by way of the actuator, and the actuator having an electric motor that is driven by means of an electronic control and regulation unit. To achieve a compact disc brake, the invention discloses that the control and regulation unit is arranged directly at the actuator . This provision renders it possible to configure the electric connection as a plug coupling, which offers financial and safety advantages.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: September 11, 2007
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Peter Rieth, Enno Kelling, Bernd Piller
  • Patent number: 7241244
    Abstract: An electric actuator for an automatic transmission includes an adapter to transmit rotary motion between the adapter and the transmission. An electric motor has an output shaft operably connected the adapter by a gear set which includes a ring gear. A release mechanism includes a solenoid which selectively moves a lock member. In a first position, the lock member engages the ring gear to lock the ring gear so that the adapter is rotated by rotary motion of the output shaft and the adapter rotates to a predetermined zone about a desired gear position. In a second position, the lock member is out of engagement with the ring gear to permit rotation of the ring gear so that the adapter is rotated by internal forces of the transmission and the adapter automatically self-aligns to the exact desired gear position when the adapter is within the predetermined zone.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: July 10, 2007
    Assignee: Dura Global Technologies, Inc.
    Inventor: Yong Qiang Wang
  • Patent number: 7215090
    Abstract: A relay switch for selectively connecting a power supply line of an inverter to a ground line is inserted between the inverter and a power source, and a power consumption unit such as a resistor element is inserted between the relay switch and ground line.
    Type: Grant
    Filed: February 9, 2005
    Date of Patent: May 8, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Yuichi Kuramochi, Toshio Manaka
  • Patent number: 7205688
    Abstract: An actuator has an electric motor, a screw shaft connected to a rotational shaft of the electric motor in such a manner as to be capable of transmitting power, a nut member disposed on peripherally of the screw shaft and connected to the rotational shaft of the electric motor in such a manner as to be capable of transmitting the power and a ball rolling within a spiral groove formed between the screw shaft and the nut member, characterized in that the rotational speed of the screw shaft and the rotational speed of the nut member are different.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: April 17, 2007
    Assignee: NSK Ltd.
    Inventors: Ryoichi Otaki, Koji Hashimoto
  • Patent number: 7198336
    Abstract: A vehicular brake control apparatus includes a braked member that rotates together with a wheel, a braking member, an electric driving device that presses the braking member against the braked member to apply a braking torque to the wheel, when being supplied with electric current, an operational state detector that detects an operational state of the vehicle and provides a quantity of state representative of the operational state of the vehicle, a braking torque change request determiner that selectively determines that the braking torque is to be increased and that the braking torque is to be reduced, based on the quantity of state, and a current controller that controls supply of electrical current to the electric driving device so that the electric driving device is caused to drive in a predetermined direction if it is determined that the braking torque is to be increased, and so that the electric driving device does not drive in the predetermined direction if it is determined that the braking torque is t
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: April 3, 2007
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Takayuki Yamamoto, Naoki Sawada
  • Patent number: 7185745
    Abstract: An electrically driven vehicle brake comprises a brake piston, which acts on at least one friction lining and can be displaced out of an initial position into an actuation position, in which the brake piston abuts the friction lining against a rotating member of the vehicle brake which is to be connected, fixed against rotation, to a wheel of the motor vehicle, and a transmission unit, driven by an electric motor and acting on the brake piston to actuate the brake piston, wherein the electric motor is to be triggered by an electronic control unit, which is also set up to detect performance parameters of the vehicle, the electric motor and/or the vehicle brake.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: March 6, 2007
    Assignee: Lucas Automotive GmbH
    Inventors: Gregor Godlewsky, Thomas Maur, Michael Keller, Ralf Leiter, Ralf Kinder, Gregor Poertzgen
  • Patent number: 7108110
    Abstract: The invention is based on a braking device for an electric motor with a stator (14, 16, 18) and a rotor (10), in particular for a direct current series-wound motor, with a braking element (20) that can be moved between an operating position and a braking position depending on a magnetic flux in the stator (14, 16, 18), wherein there is an air gap (32) between the braking element (20) and the stator (14, 16, 18), and with a short-circuit ring (38) for suppressing mechanical vibrations. The invention proposes that the short-circuit ring (38) be inclined in relation to the air gap (32) between the stator (14, 16, 18) and the braking element (20).
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: September 19, 2006
    Assignee: Robert Bosch GmbH
    Inventor: Michael Habele
  • Patent number: 7052427
    Abstract: An electric screw actuator system, e.g. for an electrically driven and controlled steering device, comprises a screw actuator, an electric motor (2) engaging the screw actuator through a reduction gear mechanism (3), electronic operating means for operating the screw actuator electrically, and a mechanical back-up system for operating the screw actuator in the absence of electric power e.g. in the case of an electric power failure of in the case the electric power is switched off, maintenance, garage parking etc. The mechanical back-up system comprises a manually controllable operation member (4) and an electromagnetic coupling (6), said coupling disengaging the rotation member from the screw actuator in the case of nominal operation and availability of electric power, and engaging the rotation member with the screw actuator in the case of electric power failure.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: May 30, 2006
    Assignee: SKF Engineering & Research Centre, BV
    Inventors: Hendrikus Jan Kapaan, Eduardus Gerardus Maria Holweg, Aurelio Nervo
  • Patent number: 7051846
    Abstract: An electric heat-generating circuit installed within disc brakes of vehicles to generate heat and dry the discs when current flows. An electromagnetic induction unit generates a current to the electric heat-generating circuit by using an electromagnetic induction phenomenon via the formation of a magnetic field. Therefore, a power can be supplied to discs by a wireless method using electromagnetic induction phenomenon, thereby enabling the brakes to maintain a dry state even during operation under wet conditions.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: May 30, 2006
    Assignee: Hyundai Motor Company
    Inventor: Jong-Chan Lee
  • Patent number: 7018324
    Abstract: A magnetic controlled loading device in combination of a power generating set and an adjusting drive mechanism having a flywheel, a shaft, a transmission element, a magnetic controlled loading device, a micro power generating set and an adjusting drive mechanism integrated into one single unit. It can also be taken apart and used in various combinations. By fully utilizing the limited space without increasing the volume of the flywheel and internal components, a rotor and a stator are disposed in the center of the magnetic controlled loading device. This makes the rotor's permanent magnets to be set on top of the flywheel's inner ring, so that when the flywheel is in operation, it turns into a micro power generating set. By utilizing its self generating power supply, it can provide the power needed by a small motor and by manual adjustments it can also control the changes in magnetic flux density between the flywheel and device as well to achieve continuous adjustment of loading resistance.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: March 28, 2006
    Inventor: Lily Lin
  • Patent number: 7014017
    Abstract: An actuating assembly for an electronic parking brake includes a housing and motor secured to the housing and having an output shaft. A cable assembly is rotatably driven by the motor. A cable is anchored at a first end to the cable assembly and wraps around the cable assembly as the cable assembly rotates in a first direction. A first spring is secured to the cable assembly such that it is rotatable with the cable assembly. A drum receives the first spring, which is engageable with an interior surface of the drum to prevent rotation of the cable assembly. A plurality of grooves is formed on a surface of the drum. At least one roller element is positioned in a groove of the drum. A spring housing receives the drum and is secured to the housing. Each of a plurality of apertures in the spring housing receives a roller element.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: March 21, 2006
    Assignee: Dura Global Technologies, Inc.
    Inventors: Ronald J. Hanna, Michael A. Slumba, Andrew B. Turner, Bryan D. Powrozek
  • Patent number: 7007779
    Abstract: An electromagnetic brake assembly has a brake shoe) movable between a first position at which it is located in a braking engagement with a movable surface and a second position at which it is located out of braking engagement with the movable surface. An electromagnet is energizable to bias the shoe to one or other of the first and the second positions and a power supply is provided having a direct current source for supplying a direct current flow to energize the electromagnet. The power supply further has an alternating current source that provides an alternating current flow through the electromagnet with a successively decreasing amplitude characteristic, after interruption of the direct current flow.
    Type: Grant
    Filed: September 11, 2003
    Date of Patent: March 7, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventors: Conny Johansson, Lars Nygren, Bruno Slettenmark
  • Patent number: 6988595
    Abstract: A braking force is generated by using a rotation of an electric motor to move a piston, which presses friction members onto a rotor. The displacement of the piston is controlled such that a detection value of a resolver becomes a target value. In the case of brake noise due to vibration of the rotor, the displacement of the friction members with respect to the rotor fluctuates in connection with the rotation of the rotor, leading to fluctuations in a rotational amount of the electric motor. Therefore, in a simple method and apparatus, brake noise can be detected based upon the magnitude of the fluctuation amount in the detection value of the resolver.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: January 24, 2006
    Assignee: Advics Co., Ltd.
    Inventors: Masahiko Kamiya, Hiroshi Kondo, Shin Sasaki, Daizo Oba
  • Patent number: 6971489
    Abstract: A motor and brake assembly having a disengaging mechanism for use with RV's are disclosed. The assembly includes a motor and a disengaging mechanism that is mounted thereon. The disengaging mechanism includes a motor mount comprised of a cylindrical piece with a plurality of holes disposed on the periphery of an outer flange of the cylindrical piece. The cylindrical piece extends over the barrel of the motor and is secured to the barrel with a plurality of screws. Through manipulation of the cylindrical piece, the user can selectively engage or disengage the brake from the motor.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: December 6, 2005
    Assignee: RBW Industries, Inc.
    Inventor: Raymond Willis Blodgett, Jr.
  • Patent number: 6970761
    Abstract: Based on the realization that, at the instant a holding brake in the drive of a machine tool is actuated, it may not be necessary to precisely observe the setpoint values, it may be provided to adapt control parameters in the controller of the drive such that, given an engaged holding brake, oscillations may be avoided or substantially reduced. By applying a correction value to the controller, it may be possible to prevent the adaptation of the control parameters from resulting in a change at the output of the controller.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: November 29, 2005
    Assignee: Dr. Johannes Heidenhain GmbH
    Inventors: Norbert Kerner, Frieder Kohler
  • Patent number: 6959794
    Abstract: A parking brake monitor and adjustment control system controls parking brake operation of an electromechanically actuated brake system which applies a parking brake force to a wheel. The system includes a monitor circuit for producing an output signal which intermittently causes the brake system to readjust the parking brake force applied to the wheel.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: November 1, 2005
    Assignee: Goodrich Corporation
    Inventors: Mihai Ralea, Eric Daniel Cahill