Patents Assigned to Akebono
  • DISC BRAKE DEVICE
    Publication number: 20170350461
    Abstract: A disc brake apparatus has a support member, slide members each having a guide pin and an anchor pin which are situated on an inner side and outer side of the support member, respectively, and a caliper which is held so that tangential force of an outer pad is transmitted to a claw portion and which is supported on the slide members. The caliper includes outer transmission surfaces which transmit braking torque generated in the outer pad to the anchor pins and inner transmission surfaces which transmit the braking force to the guide pins.
    Type: Application
    Filed: November 18, 2015
    Publication date: December 7, 2017
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Toshifumi MAEHARA, Hiroaki NAKAMURA
  • DISC BRAKE APPARATUS
    Publication number: 20170343069
    Abstract: A disc brake apparatus structured such that, on receiving a pressing force from an operating spring, a piston arranged within a cylinder formed in a caliper body presses a piston side pad. The disc brake apparatus includes a support part formed in a part of the caliper body, a reaction force receiver provided on and projected from the lateral side of the piston and opposed to the support part, and cam parts interposed between the support part and the reaction force receiver and, on receiving a rotation force, capable of spreading the distance between the support part and the reaction force receiver to thereby release the pressing force.
    Type: Application
    Filed: December 16, 2015
    Publication date: November 30, 2017
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Kazuhiro YOSHIKAWA, Toshifumi MAEHARA
  • Electric parking brake control device, control method and control program, and brake system
    Patent number: 9783174
    Abstract: A control device for an electric parking brake controls a motor for driving a friction member of the electric parking brake. The control device includes a processing unit which starts the motor in order to drive the friction member to a direction for placing the electric parking brake in a locked state; measures a current value of the motor in an operating state thereof; determines a cut-off current value from the measured current value of the motor according to a predetermined rule defining a correlation between the cut-off current value of the motor, by which a braking force necessary for the electric parking brake in the locked state is generated, and an increasing rate of the current; and stops the motor when the current value of the motor reaches the determined cut-off current value.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: October 10, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Misako Imai, Hidekazu Hori, Hideki Kakizaki
  • Planetary carrier with spring clutch
    Patent number: 9772029
    Abstract: A planetary gear assembly comprising: a housing, which contains: a planetary carrier, a sun gear, at least one planetary gear, a ring gear, a coil spring; an input shaft; and an output shaft. The coil spring extends around at least a portion of the planetary carrier. The coil spring includes a first tang in communication with the ring gear and a second tang in communication with the housing. When torque is applied to the input shaft, the planetary carrier rotates within the coil spring in one or more driving directions so that torque is transferred to the output shaft. When no torque is applied to the input shaft and torque is applied to the output shaft, the coil spring constricts and provides sufficient contact force to the planetary carrier and housing to prevent the planetary carrier from moving relative to the housing in at least one of the driving directions.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: September 26, 2017
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventor: Carla Thomas
  • DISC BRAKE DEVICE AND DISC BRAKE FOR RAILWAY
    Publication number: 20170267262
    Abstract: In a disc brake apparatus, a parallelism maintaining control mechanism for pressing lining surfaces of pads against a disc rotor in parallel includes a pressure plate which is brought into abutment with a pad holding member, a link arm having a fixing shaft projecting from a caliper body in parallel to a side surface of a disc rotor, a moving shaft disposed in parallel to the fixing shaft and pivotally supporting the pressure plate, joint members which connect the fixing shaft and the moving shaft in parallel to each other and a connecting shaft for pivotally connecting the joint members to each other, and a spring member for pressing the pressure plate against the pad holding member.
    Type: Application
    Filed: August 20, 2015
    Publication date: September 21, 2017
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Akihiko YAMAZAKI, Yoshikazu HARIGAI
  • Shim assembly for disk brake
    Patent number: 9759277
    Abstract: A shim assembly for a disk brake includes inside shim locking pieces which are provided in an inside shim main body of the inside shim plate and bent toward the pressure plate so that displacement of the inside shim plate in radial and peripheral directions is restricted and outside shim locking pieces which are provided in an outside shim main body of the outside shim plate and bent toward the pressure plate so that displacement of the outside shim plate in the peripheral direction is allowed and displacement thereof in the radial direction is restricted. Engaging pawls are provided in the inside shim main body and projected from a peripheral edge of the pressure plate. The outside shim locking pieces are respectively engaged with the engaging pawls so as to cover the engaging pawls, to prevent the outside shim plate against separation from the inside shim plate.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: September 12, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Naoko Kobayashi, Daisuke Kobayashi
  • FRICTION MATERIAL
    Publication number: 20170254378
    Abstract: A friction material includes a fiber base material, a friction modifying material and a binder. The friction modifying material includes alumina particles including, as a main component, ?-alumina particles. The ?-alumina particles are contained in an amount of 1 mass % or more in the friction material.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 7, 2017
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Takuya TAKADA, Motoyuki MIYAJI, Toru KAWATA
  • Clutch for a parking brake system
    Patent number: 9752635
    Abstract: A brake system is disclosed, which comprises a parking brake system and an inboard brake pad. The parking brake system includes a first actuator assembly, a second actuator assembly, a motor, and a clutch. The clutch selectively communicates power from the motor to the first actuator assembly so that a first end of the inboard brake pad is moved relative to a brake rotor. The clutch selectively communicates the power from the motor to the second actuator assembly so that a second end of the inboard brake pad is moved relative to the brake rotor. The clutch selectively communicates the power from the motor to both the first actuator assembly and the second actuator assembly so that both the first and the second ends of the inboard brake pad are moved relative to the brake rotor.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: September 5, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Aurelian Bahmata, Galus Chelaidite
  • Opposed-piston disc brake caliper
    Patent number: 9746042
    Abstract: In an opposed-piston disc brake caliper, a pair of reinforcement bridge portions, which are inclined relative to an axial direction, are provided on outside of a rotor in a radial direction of the rotor so as to define corner opening portions in an opening portion which is defined by an inner body portion, an outer body portion, and an entry-side connection portion and an exit-side connection portion connecting the inner body portion and the outer body portion. A torque receiving portion of one of the entry-side torque receiving portion and the exit-side torque receiving portion is exposed toward an outside in the radial direction via the corner opening portions.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: August 29, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Takefumi Morio, Tetsuya Noguchi, Tsuyoshi Suzuki, Yoshio Totsuka
  • Disk brake and disk brake for railway vehicle
    Patent number: 9694833
    Abstract: A disk brake includes a floating caliper, a pair of brake pads, a driving piston and a caliper return mechanism. The floating caliper includes a base portion which is slidably supported via a guide pin to a support and a pair of pressing arms which extend from the base portion to pinch a disk rotor. The brake pads are provided in tip portions of the pressing arms so as to face side surfaces of the disk rotor. The driving piston is provided on one of the pressing arms so as to drive one of the brake pads toward one of the side surfaces. The caliper return mechanism is arranged in at least one of both end portions of the guide pin on a side opposite to the driving piston side so as to elastically bias the base portion to the side opposite to the driving piston side.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: July 4, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Akihiko Yamazaki, Yoshikazu Harigai, Yuichi Okada, Takayuki Shindo
  • FRICTION MATERIAL
    Publication number: 20170175839
    Abstract: A friction material as a lining for a drum brake includes polytetrafluoroethylene and an acrylic rubber-modified phenol resin. In the friction material, the polytetrafluoroethylene is preferably included in an amount of 0.1% by mass to 5% by mass, and the acrylic rubber-modified phenol resin is preferably included in an amount of 1% by mass to 15% by mass.
    Type: Application
    Filed: May 12, 2015
    Publication date: June 22, 2017
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Yuki SATO, Mikiya HARUTA
  • Multiple piece pad clip
    Patent number: 9677629
    Abstract: A pad clip comprising two or more discrete pieces comprising: one or more clip body sections including a bridge attachment segment located at a bridge end, a spring attachment segment located at a spring end, or both; and one or more bridge sections, one or more retraction springs, or both; wherein the two or more discrete pieces are adapted to be attached together at the bridge attachment segment, spring attachment segment, or both. The teachings also include a method of forming the pad clip, comprising: forming two or more clip body sections, each clip body section including a spring attachment segment; forming one or more retraction springs; attaching the one or more retraction springs to the spring attachment segment of the two or more clip body sections; and installing the pad clip about a support bracket of a brake assembly.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: June 13, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Brian Lewis Boyle, Gang Lou
  • High-low pad retraction spring
    Patent number: 9670977
    Abstract: A device comprising a connection plate having a first end and a second end and two or more spring arms connected to and extending from the second end of the connection plate at an angle and having a portion that extends back toward the connection plate, wherein the two or more spring arms, when moved during a brake apply, provide an axial force toward the connection plate. The device may be used within a brake assembly, which further includes a caliper; a support bracket having a leading end and a trailing end, wherein the leading end, the trailing end, or both, have one or more projections; a rotor extending through the support bracket; and two or more brake pads located within the support bracket on opposing sides of the rotor.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: June 6, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventor: Brian Lewis Boyle
  • Magnetic clutch for a DC motor
    Patent number: 9669817
    Abstract: A device for a brake system comprises a rotating plate including magnets having a first polarity. The rotating plate engages an output shaft of a motor. The device includes a non-rotating plate including magnets, one or more of which have the first polarity and one or more of which have a second polarity. The non-rotating plate moves axially between an engaged position and a non-engaged position. In the engaged position, the magnets in the rotating plate magnetically attract the one or more magnets in the non-rotating plate with the second polarity so that non-rotating plate moves into contact with the rotating plate. In the non-engaged position, the magnets in the rotating plate magnetically repel the one or more magnets in the non-rotating plate with the first polarity so that the non-rotating plate moves out of contact with the rotating plate and thus rotation of the rotating plate is allowed.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: June 6, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Galus Chelaidite, Aurelian Bahmata
  • Friction material composition and friction material
    Patent number: 9656921
    Abstract: A friction material composition including a fiber base material, a friction modifier and a binder. A content of copper in the friction material composition is 0.5% by mass or less. The friction material composition includes a partially graphitized coke and muscovite. A friction material is formed by molding the friction material composition.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: May 23, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Takuya Kitami, Katsuji Seki, Yoshiyuki Sugai
  • Composite disc rotor
    Patent number: 9657794
    Abstract: A composite disc rotor includes a disc main body, a coupling bracket and coupling units. Each of the coupling units includes a bobbin, a clip and a coupling bolt. A head part of the bobbin includes a torque receiving portion inserted in the notch and a projection projected in a circumferential direction from an end of the torque receiving portion. A pipe part of the bobbin is extended from the head part and is fitted in a coupling through hole of the disc main body. The clip includes a connecting portion between the torque receiving portion and the notch and a pressing portion extended from the connecting portion between the head part and the coupling bracket. The coupling bolt is inserted into each of through hole of the bobbin to fix the coupling bracket to the coupling unit.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: May 23, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Takefumi Morio, Shinjiro Masuko, Takaaki Sasaki, Tomoki Yachi
  • Sequential parking brake assembly
    Patent number: 9644693
    Abstract: An assembly includes a brake system comprising a parking brake assembly including a first drive shaft and a second drive shaft. The assembly also includes two or more opposing brake pads, and a rotor extending between the two or more opposing brake pads. During use, the first drive shaft is moved so that a first portion of the brake pad is moved relative to the rotor, The second this shaft is moved so that a second portion of the brake pad is moved relative to the rotor. One of the first portion of the brake pad or the second portion of the brake pad is moved relative to the rotor before the other of the first portion of the brake pad or the second portion of the brake pad is moved relative to the rotor.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: May 9, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventors: Galus Chelaidite, Waleed Mahmoud Al-Mahshi, Carla Thomas
  • Actuator assembly for a parking brake system
    Patent number: 9592813
    Abstract: Disclosed is an assembly that includes a spindle; a brake cable in communication with the spindle; and a spring in communication with the spindle. Movement of the spindle in a first direction causes the brake cable to move so that a clamping force is created. Movement of the spindle in a second direction causes the brake cable to move in a second direction so that the clamping force is released. Movement of the spindle in both the first direction and the second direction causes the spring to compress so that a controller can determine when the clamping force is created and released.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: March 14, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventor: Galus Chelaidite
  • Piston with out of phase mode
    Patent number: 9587741
    Abstract: A brake piston comprising: (a) a rear wall, (b) a cylindrical side wall connected to the rear wall, (c) a recess located within the brake piston, (d) an insert located within the recess of the brake piston; and (e) an adhesive connecting the insert to the recess of the brake piston; wherein the insert is made of metal.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: March 7, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Yuichi Koshikawa, Moira Ann Gaskell, Jeffrey David Pontius, Christian Andrew Ball
  • Differential for a parking brake assembly
    Patent number: 9587692
    Abstract: The present teachings relate to a brake assembly, and more particularly to a differential for a brake assembly that is unlocked or open in one configuration and locked or closed in another configuration. The brake assembly comprises a differential and one or more output shafts. During rotation of at least one of the one or more output shafts a brake apply is created or released. During creation of the brake apply, the differential distributes a rotational force to each of the one or more output shafts until at least one of the one or more output shafts experiences higher resistance and then the differential re-distributes the rotational force to at least one of the one or more output shafts with lower resistance. During release of the brake apply, the differential distributes an opposing rotational force equally to each of the one or more output shafts.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: March 7, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventor: Kenneth Eric Gutelius