Patents Assigned to Akebono
  • Friction material
    Patent number: 10190649
    Abstract: This friction material contains a fiber base material, a friction modifier and a binder. The content of copper in the friction material is not more than 0.5 mass % in terms of elemental copper, and the content of the binder is at least 10 mass %. Furthermore, the friction material contains calcium hydroxide and zinc, and has a pH of at least 11.7.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: January 29, 2019
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Motoyuki Miyaji, Katsumi Shibuya, Takayuki Watanabe
  • Brake piston
    Patent number: 10184536
    Abstract: A brake piston assembly including a brake piston; a rotary to linear stage mechanism including a spindle and a nut; and a ball ramp assembly including a nut ramp plate and a piston ramp plate. The brake piston includes a piston pocket. The ball ramp assembly is located at a bottom wall of the piston pocket. The ball ramp assembly engages a side wall of the piston pocket so that the ball ramp assembly is maintained in the piston pocket after the ball ramp assembly is assembled in the piston pocket. Rotation of the spindle causes the nut to axially move until the nut directly contacts the nut ramp plate, and further axial movement of the nut causes the nut to move the ball ramp assembly and the brake piston against an inboard brake pad to create a clamp force.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: January 22, 2019
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Galus Chelaidite, Michio Suzuki
  • Polymeric brake piston with reinforcing core
    Patent number: 10184535
    Abstract: A brake piston comprising a) an open end; b) a closed end; c) a piston cylindrical wall comprising a polymeric material which extends from the closed end to the open end; d) a core member comprising a metallic material located within the cylindrical wall which extends between the closed end and the open end without extending completely to the open end; and wherein the core member structurally reinforces the brake piston. The brake piston may find particular use in a disc brake assembly. The core member may be particularly useful for structurally reinforcing the brake piston when receiving and transferring a brake apply force.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: January 22, 2019
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventor: James Andrew Reuss
  • FRICTION MATERIAL
    Publication number: 20180355935
    Abstract: A friction material includes a bio-soluble inorganic fiber and a metal sulfide. A content of the bio-soluble inorganic fiber based on the friction material is 7% by volume or more. The friction material includes no copper component and no metal fiber. The friction material may further include zinc.
    Type: Application
    Filed: November 22, 2016
    Publication date: December 13, 2018
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Takuya TAKADA, Hiroshi TOKUMURA, Toru KAWATA
  • Friction material
    Patent number: 10151367
    Abstract: A friction material includes a fiber base material, a friction modifier and a binder. The friction modifier includes two or more kinds of titanate compounds. The two or more kinds of titanate compounds have a median diameter (D50) of 20 ?m or more. At least one of the two or more kinds of titanate compounds is a porous titanate compounds. The friction material includes no copper component.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: December 11, 2018
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Yu Iwai, Saki Maruta, Yoichi Kawashima, Hiroshi Isobe
  • Mold for brake pad friction material, manufacturing apparatus, manufacturing method, preform, and brake pad
    Patent number: 10144189
    Abstract: A mold of a brake pad friction material, including a mold member fitted into a mold frame into which a powder material of the brake pad friction material is put, in which the mold member is configured such that a pressing surface in a surface of the mold member, which forms a region abutting the powder material put into a mold frame, has a concave shape that is formed by being gradually recessed from both end portion sides to a center portion side of the pressing surface.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: December 4, 2018
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Hiroshi Kasuya, Takuya Kitami, Motoyuki Miyaji, Michinori Yanagi
  • Method for controlling a parking brake system
    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
  • Composition for friction material
    Patent number: 10125256
    Abstract: A composition is provided having at least one binder, and a fiber substrate. The fiber substrate has organic fibers and metallic fibers, the amount of metallic fibers being superior or equal to the amount of organic fibers. The composition further has at least one oxide compound (A) selected among at least one silicate compound (A1), at least one phosphate compound (A2), and any mixture thereof.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: November 13, 2018
    Assignee: Akebono Brake Industry, Co., Ltd.
    Inventors: Anne-Laure Becquet, Wataru Shindo
  • Opposed-piston type disk brake device
    Patent number: 10119582
    Abstract: A parking mechanism part (12) including a clamp member (39) and a thrust generation mechanism (40) is integrally arranged in a caliper (8) constituting an opposed-piston type disk brake (2a). The clamp member (39) is supported on the caliper (8) to be movable along the axial direction with respect to an inner body part (14) of the caliper (8), a spindle (45) of the thrust generation mechanism (40) is rotatably supported on the base part (42) of the clamp member (39), a nut (46) threadedly engaged with the tip end of the spindle (45) is arranged inside a combined-use piston (10) fitted in an enter-side inner cylinder (18b).
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: November 6, 2018
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Tetsuya Noguchi, Yoshio Totsuka, Tomoki Yachi
  • DISC BRAKE APPARATUS
    Publication number: 20180298962
    Abstract: A caliper body (12) of a disc brake apparatus (10) includes an accommodating portion (14a) which accommodates a piston (20) for pressing a brake pad (66), a cam lever (42) for generating a pressing force through rotation, and a pressing force transmission mechanism (24) which is interposed between the piston (20) and the cam lever (42) to transmit a pressing force to the piston (20). The accommodating portion (14a) has an opening portion through which the piston (20), the cam lever (42) and the pressing force transmission mechanism (24) can be assembled into the caliper body (12) from a thick back side thereof, and both the accommodating portion (14a) and the opening portion are opened to a rotor disposition side area in the caliper body (12).
    Type: Application
    Filed: April 20, 2016
    Publication date: October 18, 2018
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Kazuhiro YOSHIKAWA, Toshifumi MAEHARA
  • Unitary caliper body and support bracket and method of making the same
    Patent number: 10092951
    Abstract: The present teachings provide a method comprising steps of: forming an integral brake caliper body and support bracket that comprises a caliper body and a support bracket; and separating the caliper body from the support bracket.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: October 9, 2018
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventors: Aurelian Bahmata, Brad Lethorn
  • LAMINATED SHIM FOR DISC BRAKE
    Publication number: 20180283479
    Abstract: A laminated shim for a disc brake includes base and cover shim plates. The base shim plate includes a base side substrate portion, and a base side locking piece extending in a lamination direction of the base shim plate and the cover shim plate. The cover shim plate includes a cover side substrate portion which is laminated on the base side substrate portion, and a cover side locking piece which extends from the cover side substrate portion in an extension direction of the base side locking piece and is radially overlapped with the base side locking piece. A circumferential end portion of one of the base side locking piece and the cover side locking piece abuts against a movement restricting surface facing a circumferential direction and provided at one of the base side substrate portion and the cover side substrate portion.
    Type: Application
    Filed: March 27, 2018
    Publication date: October 4, 2018
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Isao TAMAOKI, Yuta YAMAGUCHI
  • Method and apparatus for fabricating electrostatic capacitance-type acceleration sensor and electrostatic capacitance-type acceleration sensor
    Patent number: 10067155
    Abstract: In a method for fabricating an electrostatic capacitance-type acceleration sensor having a capacitor which electrostatic capacitance between a movable electrode and a fixed electrode changes according to the displacement of the movable electrode, the method includes: a step of forming a groove on at least one of the surface of an insulative substrate and the surface of a semiconductor substrate; a step of forming a hole in the semiconductor substrate so as to penetrate the semiconductor substrate at a position communicating with a passage formed by the groove; and a step of forming an electrode extraction hole in the insulative substrate so as to penetrate the insulative substrate, at a position communicating with the passage formed by the groove.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 4, 2018
    Assignees: AKEBONO BRAKE INDUSTRY CO., LTD., JAPAN OIL, GAS AND METALS NATIONAL CORPORATION
    Inventors: Takahiro Tsunoda, Takashi Kunimi, Toru Sekine
  • Friction material
    Patent number: 10060492
    Abstract: A friction material includes a fiber base material, a friction modifier and a binder. The friction modifier includes two or more kinds of non-whisker-like titanate compounds. The non-whisker-like titanate compound includes non-whisker-like lithium potassium titanate. The friction material includes no copper component. Alternatively, a friction material includes a fiber base material, a friction modifier and a binder. The friction material includes a non-whisker-like titanate compound and a low-melting-point metal fiber. The friction material includes no copper component.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: August 28, 2018
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Yoichi Onda, Hiroshi Yamamoto, Satoshi Kusaka, Yoshiyuki Sugai, Katsuji Seki
  • THERMOSETTING RESIN COMPOSITION FOR FRICTION MATERIAL, FRICTION MATERIAL AND METHOD FOR PRODUCING THERMOSETTING RESIN COMPOSITION FOR FRICTION MATERIAL
    Publication number: 20180231086
    Abstract: A thermosetting resin composition for a friction material includes a thermosetting resin and a lignocellulose nanofiber dispersed in the thermosetting resin. A method for producing a thermosetting resin composition for a friction material includes a first step and a second step. In the first step, a plant-based biomass containing a lignocellulose is mixed with a dispersion medium to obtain a mixture thereof, and the mixture is subjected to a defibration treatment to obtain a slurry of a lignocellulose nanofiber. In the second step, phenol is reacted with an aldehyde in the presence of an acid catalyst to obtain a thermosetting resin, and the slurry is added to the thermosetting resin. The lignocellulose nanofiber is dispersed in the thermosetting resin while removing the dispersion medium and unreacted phenol.
    Type: Application
    Filed: February 5, 2018
    Publication date: August 16, 2018
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Motoki KUROE, Kanami NAKAMURA
  • WEDGE CAM BRAKE
    Publication number: 20180223923
    Abstract: A wedge cam brake executes a braking operation by causing proximal end portions of brake arms to press a pair of pad assemblies against both sides of a brake rotor so as to hold it therebetween by means of a cam action of a wedge cam which is caused to move to a braking position along the direction of a rotational axis of a ball screw which is screwed into a ball nut which is provided integrally with the wedge cam as a result of the ball screw being driven to rotate. The wedge cam includes a compression coil spring for pushing to bias the ball nut towards the braking position where the proximal end portions of the brake arms are expanded and a spring holding mechanism for holding the compression coil spring in a biasing force accumulating state.
    Type: Application
    Filed: August 5, 2016
    Publication date: August 9, 2018
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Toshifumi MAEHARA, Shogo MASHIMO, Kazuhiro YOSHIKAWA
  • Pad assembly for disc brake
    Patent number: 10041554
    Abstract: An engaging projection formed on a back surface of a pressure plate is inserted into an engaging hole formed in an outside shim plate. A flat surface parts of the engaging projection constituting a side surface thereof are opposed to a linear parts of the engaging hole constituting an inner peripheral edge thereof. When the outside shim plate exists at a neutral position with respect to the pressure plate, the flat surface parts and linear parts are slightly inclined with respect to each other. A rotation of the outside shim plate about an axis of a piston based on a rotation force applied from a leading end face of the piston to the outside shim plate is regulated by line contact between the flat surface parts and linear parts.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: August 7, 2018
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Hiroyasu Ishikawa, Akiyuki Tajima, Kohei Bando
  • Sequential parking brake assembly
    Patent number: 10030728
    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 drive 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: March 17, 2017
    Date of Patent: July 24, 2018
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventors: Galus Chelaidite, Waleed Mahmoud Al-Mahshi, Carla Thomas
  • DISC BRAKE DEVICE
    Publication number: 20180195564
    Abstract: A floating type disc brake device in which a body, a support and a cylinder unit are configured separately, and a first piston and a second piston are accommodated in the cylinder unit, wherein the cylinder unit is fixed to arm portions provided on both the rotation-in side and the rotation-out side of a rotor in the support via cylinder attachment portions disposed on the outer circumference side of the cylinder unit.
    Type: Application
    Filed: June 28, 2016
    Publication date: July 12, 2018
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Kazuhiro YOSHIKAWA, Kohei NOMA
  • Brake caliper
    Patent number: D831551
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: October 23, 2018
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventors: Kirby Lee Wilson, Andreas Keller