Self-force-increasing Means Patents (Class 188/72.2)
  • Patent number: 10801564
    Abstract: A disk brake actuated preferably by compressed air, for a motor vehicle, includes an application mechanism. The application mechanism has a brake rotary lever which acts on a traverse in which there is arranged at least one readjusting spindle which acts on an application-side brake pad, having a readjusting device, and having a quick contact apparatus. The quick contact apparatus effects an advancing movement which is superposed on an actuation of the disk brake during the phase of overcoming an air gap. The quick contact apparatus has an intermediate element which is variable in terms of its position and which has at least a wedge-shaped design.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: October 13, 2020
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventor: Johann Baumgartner
  • Patent number: 10767715
    Abstract: A braking assembly for an air disc brake comprises an actuator assembly having a service portion, at least one mounting stud attached to the service portion, and an air disc brake caliper having a bore for receiving the at least one mounting stud. The mounting stud is pivotable with respect to the service portion for installation on the air disc brake caliper.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: September 8, 2020
    Assignee: Bendix Spicer Foundation Brake LLC
    Inventors: Lonnie F Cool, Richard L Lantz
  • Patent number: 10737675
    Abstract: Disclosed is a method for controlling a braking system for a motor vehicle, capable of implementing a parking brake function. The system includes a disk, a brake caliper and at least one piston to exert a disk clamping force on the disk, the braking system further including an electric drive unit moving the piston relative to the caliper and a hydraulic drive unit moving the piston relative to the caliper. The method includes at least one step of exerting a disk clamping force by moving the piston, by the electric drive unit and/or the hydraulic drive unit. The method includes a step of actuating the hydraulic unit by exerting a first clamping power on the piston, followed by a step of actuating the electric unit by exerting an additional clamping power, until a total power is obtained that is high enough to lock the disk.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: August 11, 2020
    Assignee: FOUNDATION BRAKES FRANCE
    Inventors: Lennart Witte, Benoit Ghesquiere, Aleksander Hurwic
  • Patent number: 10704629
    Abstract: An electric-wear adjusting device of a motor vehicle disc brake is provided for adjusting friction surface wear on the brake linings and brake disc of the disc brake having. having a brake application device, preferably with a rotary brake lever. The adjusting device includes an electric motor, a gear mechanism, and an output element. The output element is connected rotationally fixed to a clamping sleeve. The clamping sleeve has inwardly projecting longitudinal ribs on an inner side configured to cooperate with axial grooves of a threaded plunger of a wear-adjuster spindle unit. Also provided is a corresponding disc brake having the electric wear-adjusting device, and a method for measuring and setting air play and measuring wear of a disc brake having the electric wear-adjusting device.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: July 7, 2020
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Alexander Fuchs, Robert Theil, Csaba Mlinarcsek, Janos Toth, Peter Kovacsik, Robert Trimpe
  • Patent number: 10605315
    Abstract: A brake includes a caliper overlapping a disk. The brake also includes a first pad and a second pad which are carried by the caliper on either side of the disk. The brake further includes a first actuator including a first primary toothed wheel driving a first mobile piston pressing against the first pad in order to move same. The brake further includes a second actuator including a second primary toothed wheel driving a second mobile piston pressing against the second pad. The brake further includes a rotating shaft including a first and a second endless screw having opposite winding directions, the shaft being movable in translation. The brake further includes an electric motor for driving the rotating shaft. The first and second endless screws are engaged in the first and second primary toothed wheels respectively.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: March 31, 2020
    Assignee: FOUNDATION BRAKES FRANCE
    Inventors: Didier Esnee, Thierry Pasquet, Pascal Champion
  • Patent number: 10351117
    Abstract: A brake unit that allows the vehicle to evacuate safely in the event of brake failure while maintaining a braking performance. The brake unit is mounted on a vehicle together with a motor drive unit 2 to control brake force in accordance with a stroke of a brake pedal and a pedal force. Each brake system comprises: a stroke sensor; a pedal force sensor; a brake mechanism applying brake force to a driveshaft; a controller controlling the brake mechanism based on the stroke and the pedal force; and a powersource supplying electricity to the brake mechanism and the controller. The first controller 13 and the second controller support each other to control brake force.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: July 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Isono
  • Patent number: 10295005
    Abstract: A disc brake assembly is provided that includes a camshaft extending from a slack adjuster. A disc brake rotor and a brake caliper bridge having an outer plate and an inner plate are provided. A brake caliper carrier is provided with an outer brake pad contained by the brake caliper carrier and an inner brake pad contained by the brake caliper carrier. A cam carrier having two openings is provided along with a pusher plate having a first surface in contact with the cam and a second surface in contact with the inner brake pad. A first and a second slide pin each extend through an opening in the cam carrier and an opening in the pusher plate and an opening in the inner plate of the brake caliper bridge and into the brake caliper carrier. A cam is mounted onto the camshaft such that rotation of the camshaft will rotate the cam, and the brake caliper bridge inner plate having a surface in contact with the cam.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: May 21, 2019
    Assignee: CONSOLIDATED METCO, INC.
    Inventors: Spencer Aaron Lazaroff, Andrew James Stratton
  • Patent number: 10137878
    Abstract: A method that includes steps of measuring voltage and current of the parking brake system during creation of a parking brake apply or release of the parking brake apply. The method includes estimating motor position, motor speed, and a current draw of the motor using the measured voltage and the measured current. The method includes estimating a parking brake force with the estimated motor position. The method includes correcting the estimated motor position, motor speed, and the current draw of the motor with the measured current, and/or correcting the estimated parking brake force with the corrected estimated motor position, corrected motor, and the corrected current draw of the motor. The method includes determining the creation of the parking brake apply with the corrected parking brake force and/or determining release of the parking brake apply with the corrected estimated motor position.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: November 27, 2018
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventor: George Ritter
  • Patent number: 9989115
    Abstract: A brake system including a piston brake system and an integral parking brake system. The brake system includes a brake piston having a piston bore, and a brake pad. The parking brake system includes a rotary to linear stage mechanism located at least partially within the piston bore. During a brake apply, the brake piston and the brake pad are moved against a brake rotor to create a clamp force. During a parking brake apply, the rotary to linear stage mechanism transfers torque into a linear force to move the same brake piston and the same brake pad against the brake rotor to create a clamp force.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: June 5, 2018
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventors: Michio Suzuki, Aurelian Bahmata
  • Patent number: 9605720
    Abstract: A friction brake device has a brake rotor that rotates around an axis of rotation, brake pads that can rotate around an axis of autorotation parallel to the axis of rotation, support members that support the brake pads respectively, and pressing devices that press the brake pads against the brake rotor respectively. In the friction brake device, when the brake pads are pressed against the brake rotor, the brake pads revolve around the axis of rotation relatively to the brake rotor while being frictionally engaged with lateral faces of the brake rotor respectively. The support members press the brake pads in a direction perpendicular to the axis of rotation, and frictionally engage outer peripheries of the brake pads with a cylindrical face of the brake rotor respectively. The brake pads auto-rotate around the axis of autorotation upon beginning to be pressed, but come to rest when the pressing force increases.
    Type: Grant
    Filed: April 7, 2012
    Date of Patent: March 28, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Isono
  • Patent number: 9574628
    Abstract: A radial spring for a disk brake pad and brake pads and brakes provided with such radial springs, in which the radial spring is for the lug of a brake pad. The spring includes a clamp and a supporting loop. The clamp is formed of a straight arm, an undulating bottom, and an arm in the shape of a Z, followed by the loop connected by a bend, followed by a bend with a large radius of curvature connected to the pad terminated by a turn that is almost at a right angle to the extremity of the pad.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: February 21, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Simon Bernard, Sandra Merrien, Roger Mahoudeaux
  • Patent number: 9416829
    Abstract: A caliper housing including a piston bore and a bridge extending between the piston bore and a pair of caliper fingers interconnecting the caliper fingers and the piston bore. The caliper fingers of the caliper housing extend downwardly from the bridge to define a flat surface. A rotor having a disc shape defines a first side and a second side and disposed adjacent to the caliper fingers. An outer brake pad defining a first centroid is disposed adjacent to the first side of the rotor abutting the caliper fingers allowing the caliper fingers to urge the outer brake pad into engagement with the first side of the rotor. Each of the caliper fingers defines a pivot edge extending between the outer brake pad and the flat surface of the caliper fingers allowing the outer brake pad to pivot about the pivot edge.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: August 16, 2016
    Assignee: BeijingWest Industries Co. Ltd.
    Inventors: Steven Glenn Hoxie, Martin John Reder
  • Patent number: 9127735
    Abstract: A friction brake including a brake part, a friction lining, a friction surface, and a pressing device, arranged on the brake part, that is structured and arranged to press the friction lining against the friction surface. A holding part is located on the pressing device so that the friction lining rests against the holding part. An actuating part is located on the pressing device and rotatably mounted on the brake part and an actuator is structured and arranged to pivot the actuating part. A pin is rotatably mounted in the holding part and being arranged on the actuating part, and a rotational axis of the pin is eccentrically arranged with respect to a rotational axis of the actuating part.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: September 8, 2015
    Assignee: VE VIENNA ENGINEERING FORSCHUNGS-UND ENTWICKLUNGS GMBH
    Inventors: Michael Putz, Daniel Auer
  • Patent number: 9114787
    Abstract: A pressure generating device generates a hydraulic pressure as a result of a tensile or compressive load. The device has connections, one of which can be rigidly connected to a frame by way of a mechanism for introducing a mechanical tensile or compressive load, a pressure cylinder and a piston unit extending at least partially and flexibly in the pressure cylinder and bounding a hydraulic chamber filled with hydraulic fluid jointly with the pressure cylinder. The chamber has a simple and inexpensive construction. The connections are connected to the pressure cylinder or the piston unit by way of a coupling device that is configured such that the same hydraulic chamber has pressure applied thereto under tensile load and under compressive load.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: August 25, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Julian Ewald, Matthias Liermann, Christian Stammen
  • Publication number: 20150114767
    Abstract: A friction brake device includes first and second pressing members which press frictional engagement members against a pair of friction surfaces, respectively, that are rotatable around a rotation axis as mutually opposed, a force transmission mechanism which transmits rotational torque between the pressing members, transforms the rotational torque into the force separating the pressing members from each other along the rotation axis through a wedge action, and transmits reaction force of the pressing force between the pressing members, a pressing force control mechanism which control the force with which at least one of the pressing members presses the associated frictional engagement member against the associated friction surface, and a rotational torque bearing member which bears the rotational torque transmitted from one of the pressing members to the other of the pressing members by way of the other pressing member.
    Type: Application
    Filed: April 19, 2013
    Publication date: April 30, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Isono
  • Patent number: 9004238
    Abstract: A self-energizing disc brake includes a brake-internal hydraulic arrangement with a supply circuit and an expansion vessel, a brake application device with a brake application cylinder for applying a brake pad in the direction of a brake disc, a force transmission unit which supports the brake pad at a wedge angle on the brake application device, a tangential-force absorbing cylinder for switching over the wedge angle and being operatively connected to the force transmission unit; an electric-motor actuator which acts on the brake application device via the hydraulic arrangement, a distributor cylinder arranged in series between the electric-motor actuator and the brake application device for pressure boosting, and a control unit for controlling switchover of the wedge angle between the tangential-force absorbing cylinder and the electric-motor actuator. An adjusting device adjusts brake pad wear, and has a movable screw spindle, which is operatively connected to the brake application device.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: April 14, 2015
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventor: Bernhard Miller
  • Patent number: 8991561
    Abstract: An elevator brake can comprise a brake shoe with a substantially curved shape, the brake shoe being rotatable in a brake shoe support. The brake shoe support is mounted in a brake housing and can be linearly displaced between a readiness setting and an engagement setting. The brake can be actuated by an actuator. The actuator can comprise a brake store for acting on the brake through a connecting point to bring the brake into its engaged setting. A force store in the actuator can be held electromagnetically, and a resetting device enables resetting of the force store and of the actuator into the operating position.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: March 31, 2015
    Assignee: Inventio AG
    Inventor: Josef Husmann
  • Patent number: 8985284
    Abstract: There is provided a disk brake that can hold a required thrust force and maintain a stop state of a vehicle without increasing complexity in the disk brake even if the disk brake is operated in a high temperature state of a brake pad and then a temperature of the brake pad is reduced. In the disk brake 1, an electric motor 8 is driven to thrust a piston 6, the piston 6 presses the brake pad 5 against a disk rotor 2, and the piston 6 is held in the pressed position, the electric motor 8 is re-driven after a predetermined time from a start of holding of the piston 6, and a driving condition of the electric motor 8 after re-driving is determined based on a change in value of a current supplied to the electric motor 8 by the re-driving.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: March 24, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Takahiro Ito, Kenichiro Matsubara, Hirotaka Oikawa
  • Publication number: 20150075921
    Abstract: A friction brake device having: friction members which are pressed against a pair of friction surfaces that are rotatable around a rotation axis and opposed to each other; a force increasing mechanism which transmits rotational torque between the friction members, transforms the rotational torque to the force separating the friction members along the rotation axis through a wedge action, and thereby increasing the pressing force; a pressing force control mechanism which controls a force with which at least one of the friction members is pressed against the associated friction surface; and a normal position-recovering mechanism which returns the friction members to their normal positions when the force controlled by the pressing force control mechanism is 0.
    Type: Application
    Filed: April 19, 2013
    Publication date: March 19, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Isono
  • Publication number: 20150060215
    Abstract: A friction brake device has a brake rotor which rotates around a rotation axis, brake pads as rotating friction members which rotate around an autorotation axis parallel to the rotation axis, rotational torque transmission devices which mutually transmit rotational torques between the brake rotor and the brake pads without depending on the friction force between the brake rotor and the brake pads, and pressing devices which press the brake pads against the brake rotor. The pressing devices press the brake pads against the brake rotor by way of non-rotating friction members which are supported so as not to rotate around the autorotation axis.
    Type: Application
    Filed: April 7, 2012
    Publication date: March 5, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIK KAISHA
    Inventor: Hiroshi Isono
  • Patent number: 8915336
    Abstract: A brake includes a brake shoe, an actuating element for pressing the brake shoe against a brake disc, and at least one lever disposed such that it increases the braking force applied by the brake shoe to the brake disc by deflecting a tangential force acting on the brake shoe during braking. The actuating element comprises at least one brake disc side part, an actuator side part, and a coupling part disposed between the brake disc side part and the actuator side part, wherein the coupling part can be pivoted relative to the brake disc side part and/or the actuator side part.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: December 23, 2014
    Assignee: WABCO GmbH
    Inventors: Peter Beier, Gerhard Bruns, Olaf Jantz, Hartmut Rosendahl
  • Patent number: 8910755
    Abstract: A self-energizing disc brake includes a brake caliper held on a fixed brake carrier, an active-side and a reaction-side brake pad, which may be pressed against a brake disc, an actuating device with a self-energizing device and an adjuster device for compensating pad and/or disc wear. The self-energizing device has at least one pressure ram, in contact on the front face with the active-side pad by way of a split bearing and fixed by the end thereof facing the brake pad to a guide plate movably held in the brake carrier, designed such that the split bearing is enclosed by a seal arrangement when the self-energizing device is in a non-functioning state.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: December 16, 2014
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Johann Baumgartner, Robert Gruber, Aleksandar Pericevic, Steffen Geissler, Robert Trimpe
  • Patent number: 8899386
    Abstract: A pneumatic disc brake has a caliper which straddles a brake disc, brake pads pressable against the brake disc, wherein a brake-application-side brake pad can be actuated by a brake lever of a brake application device pivotable about an eccentric axis. Against the end side, the brake lever bears a brake ram which is coupled at the other side to the brake pad or to a guide plate coupled thereto. Two pressure rams are aligned in the same direction and spaced apart from the brake ram. The pressure rams are connected in each case to the caliper and to the brake pad or to the guide plate and have a self-energizing device. The caliper has spherical-cap-shaped bearing receptacles in which rest corresponding plain bearing elements, by which the brake lever, and the pressure rams are supported on the caliper.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: December 2, 2014
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Johann Baumgartner, Robert Gruber, Aleksandar Pericevic, Steffen Geissler, Robert Trimpe
  • Publication number: 20140326547
    Abstract: The present invention provides a small brake cylinder device that can increase braking force output from a brake output portion that moves along with a rod, while suppressing an increase in the device size. A piston defines a pressure chamber and surrounds the axis of the rod inside a cylinder body, and moves in a linear direction that is parallel to the movement direction of the rod. When pressure fluid is supplied to the pressure chamber, the piston moves in the backward movement direction relative to the cylinder body in resistance to biasing force from a rod biasing spring. Swinging members of a force amplifying mechanism swing due to being biased by the piston moving in the backward movement direction, and moves the rod by biasing it in the forward movement direction. The force amplifying mechanism amplifies the drive force generated by the piston and applies it to the rod.
    Type: Application
    Filed: November 16, 2012
    Publication date: November 6, 2014
    Applicant: NABTESCO CORPORATION
    Inventors: Masataka Yano, Tomoya Ohno
  • Patent number: 8863914
    Abstract: A part-lining disk brake is described, having an electromechanical actuator, a self-energizing application device with a wedge arrangement designed to press a brake lining against a disk brake, and at least two wedge elements of the wedge arrangement moveable relative to one another, arranged on one of a brake caliper frame and an auxiliary frame. The wedge elements are used to apply the brake lining, and act on the brake lining via a trapezoidal pressure plate.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: October 21, 2014
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Michael Herges, Bernhard Miller, Markus Stoehr
  • Publication number: 20140251736
    Abstract: A disc brake includes a caliper main body configured to have a pad assembling space that is disposed across over a disc rotor and opens toward an approximate middle thereof in a rotor radial direction and a connector part that crosses the pad assembling space in a rotor axial direction, and a pad spring that is engaged with the connector part of the caliper main body by a pair of claw portions facing each other, is installed on the caliper main body, and biases the brake pads in a rotor rotational outlet direction and inward in the rotor radial direction. The pad spring has a symmetrical shape with respect to the center in a longitudinal direction thereof, and the pair of claw portions are engaged with the connector part in a state in which the center in the longitudinal direction is offset in a rotor rotational direction with respect to the center in the rotor rotational direction of the brake pads.
    Type: Application
    Filed: March 6, 2014
    Publication date: September 11, 2014
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Keisuke NANRI
  • Patent number: 8827053
    Abstract: The present invention relates to a self-amplifying electromechanical partial lining disc brake, having a ramp mechanism as a self-amplification device. According to the invention, a rack for driving a friction brake pad is situated between roller elements of the ramp mechanism, particularly at a geometrical centroid of an imaginary surface defined by the roller elements. As a result a load is distributed to the roller elements in a more uniform fashion and the pressing force of the friction brake pad against a brake disc when the partial lining disc brake is actuated is distributed more uniformly and counteracts irregular pad wear.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: September 9, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Chi-Thuan Cao, Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann, Hans Frick
  • Patent number: 8783422
    Abstract: A system for a drive for actuating a parking brake operably involves a brake caliper. The brake caliper has at least one brake piston with a brake piston axis, the piston being actuatable by means of an operably actuating lever with a rotational center. An electric motor is fixed to the brake caliper and mechanically coupled to the actuating lever with the output shaft that exits the electric motor.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: July 22, 2014
    Assignee: IMS Gear GmbH
    Inventor: Wolfram-Heinrich Hofschulte
  • Patent number: 8714316
    Abstract: An electric brake device includes a brake pad, an axial force sensor and a controller. The brake pad is pressed against a rotation face of a brake rotor in a direction perpendicular to the rotation face. The axial force sensor detects a pressure of the brake pad. The controller performs a speed reduction control which is an operation target, based on at least one of the pressure of the brake pad and a reduced speed obtained from a wheel speed sensor.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: May 6, 2014
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventor: Hidekazu Hori
  • Patent number: 8702179
    Abstract: A brake system for a vehicle includes brake cylinders operated by pressurized fluid for actuation of brakes by means of pressurized fluid on at least one first axle of the vehicle. The brakes on at least one other, second, axle can be actuated exclusively electromechanically in response to an electrical braking request signal. The pressure of the pressurized fluid can be modulated indirectly or directly and the electrical braking request signal can be generated indirectly or directly in response to actuation of a brake pedal of a brake pedal device. A service brake function is provided by means of hybrid use of the brakes on the first axle(s) together with the brakes on the second axle(s). The brake cylinders operated by pressurized fluid are pneumatically operated brake cylinders. The pressure modulated by the brake pedal device is a pneumatic pressure, and the pressurized fluid is compressed air.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: April 22, 2014
    Assignee: WABCO GmbH
    Inventors: Peter Beier, Henning Förster, Hartmut Rosendahl, Gerhard Bruns, Olaf Jantz, Wolfgang Strache
  • Patent number: 8657080
    Abstract: The annular disk brake comprises a rotor disk and at least one brake pad provided on each side of the rotor disk. The brake pad or pads on one side are connected to a substantially axially-guided brake pad carrier. The brake has a force transmitting arrangement creating a force increasing amplification between an axially-actuated member and the carrier. This arrangement can increase the brake compactness and provide an even distribution of the braking force around the circumference of the rotor disk. A method of increasing a brake pad clamping force is also disclosed.
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: February 25, 2014
    Assignee: Asteria Performance Inc.
    Inventor: Alain Constans
  • Patent number: 8616347
    Abstract: A pneumatic disc brake includes a caliper which straddles a brake disc, brake pads pressable against the brake disc and a rotary lever actuated brake application device, and a self-energizing mechanism. The brake lever is pivotable about an eccentric axis by a brake cylinder plunger. A self-energizing factor is selected to ensure that the brake automatically releases after braking events. The brake lever is supported on a spherical bearing element mounted to the caliper and forming the eccentric axis. The brake lever bears against a bearing ball which is arranged above the bearing element in the direction of the plunger engagement point, which bearing ball is positioned in a brake ram coupled to the brake pad.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: December 31, 2013
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Johann Baumgartner, Robert Gruber, Aleksandar Pericevic, Steffen Geissler, Robert Trimpe
  • Patent number: 8596426
    Abstract: In an electric linear motion actuator, planetary rollers 7 rotatably supported on their radially inner surfaces by respective support pins 6b are radially inwardly biased by radially compressible ring springs 18 enveloping the support pins 6b, thereby biasing and pressing the respective planetary rollers 7 against the radially outer surface of a rotary shaft 4. Thus, it is possible to stably transmit torque of the rotary shaft 4 to the respective planetary rollers 7 without applying a preload to the planetary rollers 7 with a negative gap between the radially outer surface of the rotary shaft 4 and the radially inner surface of the outer ring member 5.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: December 3, 2013
    Assignee: NTN Corporation
    Inventors: Tatsuya Yamasaki, Masaaki Eguchi, Katsuhisa Yamaguchi, Tomoaki Makino
  • Patent number: 8573711
    Abstract: A vehicle braking apparatus that can exert high braking performance during vehicle braking is implemented by a control mode that can be realized in a braking apparatus (10) of usual hardware. In controlling the braking apparatus (10) of a vehicle, a climb rate of a wheel cylinder braking oil pressure (Pw) is decreased smaller than a climb rate corresponding to a climb rate of a master cylinder oil pressure (Pm) from a time point at which the wheel cylinder braking oil pressure (Pw) reaches a predetermined threshold value. The time point at which the wheel cylinder braking oil pressure (Pw) reaches the predetermined threshold value (P3) is estimated based on the climb process of the master cylinder oil pressure (Pm) or directly detected.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: November 5, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hidehisa Kato, Junji Kawamuro, Tetsuhiro Narita
  • Patent number: 8528707
    Abstract: Disclosed is a disc brake for a vehicle, such as an electronic wedge brake, capable of preventing a disc from being subject to the moment due to misalignment of inner and outer friction members with respect to a disc. The disc brake includes a disc rotating together with a vehicle wheel, inner and outer friction pads disposed at both sides of the disc, respectively, a wedge unit installed at rear sides of the inner and outer friction pads to press the inner and outer friction pads against the disc, a driving device that operates the wedge unit for a braking operation, and a sync member for synchronizing braking positions of the inner and outer friction pads with respect to the disc. Since the disc is prevented from being subject to the moment, uneven wear does not occur in the friction member and/or the disc and deformation of the disc is prevented.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: September 10, 2013
    Assignee: Mando Corporation
    Inventor: Myoung June Kim
  • Patent number: 8511439
    Abstract: A self-energizing disk brake is described. The brake includes an electric actuator in which an activation force is amplified using a self-energizing device arranged between the electric actuator and a brake lining. The system includes a brake application unit for applying the brake lining to a brake disk with an application movement of the brake lining, relative to the brake disk, having a component extending parallel to a rotational axis of the brake disk and another component extending tangentially to the rotational axis of the brake disk. At least one electromotive drive for activating the brake application unit and at least two brake plungers of the brake application unit are provided. Pressure surfaces of the brake plungers have a recess with a ramp shaped contour for engagingly receiving a rolling element.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: August 20, 2013
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Johann Baumgartner, Matthias Seidenschwang, Dirk Ganzhorn, Luise Ulrike Bieker nee Rothe
  • Patent number: 8448756
    Abstract: A procedure for actuating a parking brake is described, the parking brake comprising a brake piston which is received in a hydraulic chamber and is displaceable within the hydraulic chamber by means of a hydraulic actuator on the one hand and a mechanical actuator on the other. During operation of the parking brake the mechanical actuator is activated in a first step in order to displace the brake piston in the hydraulic chamber in such a way that a volume of a hydraulic fluid contained in the hydraulic chamber is increased. At a subsequent time the hydraulic actuator is activated in order to build up or increase a clamping force of the parking brake. The hydraulically generated or increased clamping force is then maintained by means of the mechanical actuator.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: May 28, 2013
    Assignee: Lucas Automotive GmbH
    Inventor: Josef Knechtges
  • Patent number: 8448757
    Abstract: The invention relates to an electromechanical friction brake, for example in the form of a disc brake having an electromechanical actuation device. The electric motor of the actuation device presses a frictional brake lining against a brake disc by means of a reduction gearbox and a ball ramp mechanism. The actuation device is supported by a spring washer that is pretensioned so strongly that when the disc brake is released it acts on a segment with a falling spring characteristic; that is, a spring force exerted by the spring washer on the frictional brake lining increases with increasing tension of the disc brake.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: May 28, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Vollert, Bertram Foitzik, Willi Nagel, Bernd Goetzelmann, Dirk Hofmann, Nguyet-Minh Cao
  • Patent number: 8439170
    Abstract: The invention relates to a self-reinforcing electromechanical disc brake having a brake caliper produced by means of shaping, in one piece with a housing for electromechanical parts of an actuating device of the disc brake, with the housing forming a dimensionally stable hollow body. It is possible in this way to produce a bending-resistant and torsionally rigid brake caliper with a low wall thickness.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: May 14, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Chi-Thuan Cao, Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann, Hans Frick
  • Publication number: 20130098715
    Abstract: A self-energizing disc brake includes a brake-internal hydraulic arrangement with a supply circuit and an expansion vessel; a brake application device having a cylinder for applying a brake pad toward a brake disc; a force transmission unit supporting the brake pad at a wedge angle on the brake application device; a tangential-force absorbing cylinder for switching over the wedge angle, which is operatively connected to the force transmission unit; an electric-motor actuator for acting on the brake application device via the hydraulic arrangement; and a control unit. The force transmission unit has a deflection lever and a shoulder element attached thereto. Rolling surfaces thereof are in contact with respective corresponding rolling surfaces of a brake application element of the cylinder and a brake pad support device. The deflection lever has a pressure section with a rolling surface in operative connection with the tangential-force absorbing cylinder.
    Type: Application
    Filed: December 13, 2012
    Publication date: April 25, 2013
    Applicant: KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH
    Inventor: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
  • Patent number: 8393440
    Abstract: Disclosed is a brake device, particularly a disc brake, comprising a caliper, brake drum, or similar, and energy accumulator, especially an accumulator spring. The energy accumulator rests on the caliper or similar while being supported on an abutment by means of a lever arm. A mechanism for transmitting resilient forces between the energy accumulator embodying one spring element is created with the aid of a lever arm via the abutment. The brake device is characterized in that the lever arms can take at least two or more different angular positions relative to each other in relation to the abutment.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: March 12, 2013
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Johann Baumgartner, Aleksandar Pericevic
  • Patent number: 8220593
    Abstract: A self-energizing disc brake having an electric actuator in which an activation force applied to the actuator is amplified using a self-energizing device arranged between the actuator and brake lining is described. The device has a brake application unit for applying at least one brake lining to one side of a brake disc by carrying out an application movement of the brake lining relative to the brake disc, the application movement having at least a first movement component in a direction parallel to a rotational axis of the brake disc and a second movement component in a direction tangential to the rotational axis of the brake disc. The device also has at least one electromotive drive for activating the brake application unit.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: July 17, 2012
    Assignee: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Johann Baumgartner, Matthias Seidenschwang, Ernst Dieter Bieker, Luise Ulrike Bieker nee Rothe, legal representative, Dirk Ganzhorn
  • Publication number: 20120168264
    Abstract: A friction brake including a brake part, a friction lining, a friction surface, and a pressing device, arranged on the brake part, that is structured and arranged to press the friction lining against the friction surface. A holding part is located on the pressing device so that the friction lining rests against the holding part. An actuating part is located on the pressing device and rotatably mounted on the brake part and an actuator is structured and arranged to pivot the actuating part. A pin is rotatably mounted in the holding part and being arranged on the actuating part, and a rotational axis of the pin is eccentrically arranged with respect to a rotational axis of the actuating part.
    Type: Application
    Filed: May 10, 2010
    Publication date: July 5, 2012
    Applicant: VE VIENNA ENGINEERING FORSCHUNGS-UND ENTWICKLUNGS GMBH
    Inventors: Michael Putz, Daniel Auer
  • Patent number: 8205726
    Abstract: A brake pad (5) for a disc brake (1) that can be associated with a caliper (2) with thrust means (9a, 9b, 9c) for clamping the brake pad (5) with friction against a braking band (4) of a brake disc (41), wherein the brake pad (5) comprises: a plate (6) with a central portion (11) provided with a layer of friction material (7), said central portion (11) having an upper edge (12) and an opposed lower edge (13) and also two lateral edges (6a, 6b) and two support appendages (14) which extend from said lateral edges (6a, 6b) of the central portion (11), each of said support appendages (14) bounding an eye (16) capable of receiving a pin (27) of the caliper (2). The upper edge (12) and lower edge (13) extend substantially along circumferences of a circle imparting an arcuate shape to the central portion (11), and said support appendages (14) are disposed substantially at the height of said lower edge (13) of the brake pad (5).
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: June 26, 2012
    Assignee: Freni Brembo S.p.A.
    Inventors: Michael Schorn, Giovanni Mario Tironi, Enrico Battista Ongaretti, Paolo Sala
  • Patent number: 8201668
    Abstract: A device for decelerating or braking a moving mass includes a movably guided coupling member for pressing a brake lining against a braking surface and a brake actuator, filled with hydraulic liquid and connected to the coupling member, for generating a pressure force that can be passed into the brake lining through the coupling member. The brake lining is connected to a pressure transducer that can be fastened on a frame of the mass to be decelerated or braked through a connecting device. The pressure transducer has a hydraulic liquid-filled supporting cylinder and a supporting piston interacting therewith. The supporting cylinder communicates with a brake cylinder through hydraulic lines. This allows an improved adjustment of deceleration or braking. For this purpose, a regulating device adjusts the brake force depending on a predetermined theoretical value.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: June 19, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Toni Schiffers, Christian Stammen
  • Patent number: 8196715
    Abstract: Disclosed is a disk brake for a vehicle having a power transmission device that presses a friction pad against a disk by using a worm gear. The disk brake includes a movable friction pad that makes contact with one lateral side of a disk rotating together with a vehicle wheel, thereby generating braking force, a wedge member, which is provided at one side thereof with the movable friction pad and moves toward the disk by means of a driving motor generating a driving force, a guide member for guiding the wedge member such that the wedge member moves back and force relative to the disk; and a power transmission device installed between the driving motor and the guide member so as to convert the driving force of the driving motor into a linear movement in a direction perpendicular to a rotating shaft of the driving motor.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: June 12, 2012
    Assignee: Mando Corporation
    Inventor: Joo Gon Kim
  • Patent number: 8196714
    Abstract: While driving one motor, an electronic wedge brake (EWB) system according to an embodiment of the present invention implements a main braking function by self-energizing caused by a wedge operation. Since only one motor is used, it is possible to reduce the number of parts and to simplify the structure. Further, the electronic wedge brake system implements various functions, such as a function for maintaining a set clearance of a pad, a Fail-Safe function, and an EPB function by using a solenoid interlocked with the NSL (Non-Self Locking) type screw that moves in the axial direction. When the electronic wedge brake system is operated, an axial reaction force transmitted from the pad is dispersed using a frictional force caused by a NSL (Non-Self Locking) type push rod shaft, which reduces a load of a solenoid which constrains a push rod shaft. As a result, a low-performance solenoid may be used.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: June 12, 2012
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Jongsung Kim
  • Patent number: 8181751
    Abstract: A brake apparatus includes a motor-based braking unit driven by control of an ECU and equipped with a BIR operating unit, that is, a BIR-equipped braking unit having a BIR (Ball In Ramp) function of generating straight movement force using changes in path of balls disposed between ramps rotating, such that it can achieve F-S (Fail-Safe) and generate emergency braking force for safety by operating the BIR operating unit using a pedal-coupled cable only by operating a brake pedal even if a motor of the motor-based braking unit fails.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: May 22, 2012
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Jongsung Kim
  • Patent number: 8177037
    Abstract: A brake system of the present invention is a dual braking system, which includes an ECU that controls parts for braking when a brake pedal is operated, a main brake that is controlled by ECU by locking a wheel disc for braking in normal braking, and a sub-brake that is mounted on the wheel disc and achieves sub-braking function to achieve emergency braking for safety by locking the wheel disc by control of ECU that has detects failure of main brake. Therefore, it is possible to improve safety by achieving emergency braking while achieving F-S (Fail-Safe), when the motor of main brake fails. Further, it is possible to also achieve stable FR (Failure Rate) in an EWB or an EMB that is practically applied to a vehicle, as in a hydraulic brake system, and to expedite common use of brake systems where a BBW (Brake By Wire) technology, such as EMB and EWB, is applied.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: May 15, 2012
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Jongsung Kim
  • Patent number: 8172046
    Abstract: The disc brake device comprises a piston (5) designed to press a pad (8) against a disc (2) when said piston is subjected to a first force along a first axis (z?z) in a direction directed from the piston toward the pad. A first plate (12, 13) is inserted between a first surface (52) of the piston (5) and the pad (8) and designed to generate a second force along the first axis (z?z) in a direction directed from the pad toward the piston when the pad (8) is caused to move as a result of rotation of the disc (2.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: May 8, 2012
    Assignee: Robert Bosch GmbH
    Inventor: Jean-Pierre Boisseau