Patents Assigned to Akebono
  • DISC BRAKE AND DISC BRAKE FOR RAILWAY VEHICLES
    Publication number: 20200300311
    Abstract: A disc brake (11) includes: a floating caliper (13) including a base portion (25) slidably supported by an upper guide pin (31) supported by a support (23), a piston side pressing arm (39) and an opposite piston side pressing arm (41); a pair of brake pads (17); a drive piston (15) provided on the piston side pressing arm (39); a caliper return mechanism (22) for elastically biasing the base portion disposed on an end portion of the guide pin (31) to the side opposite to the drive piston side; and an inner circumferential side washer (44) disposed on both sides in an axial direction of the rubber ring (21) elastically supporting the upper guide pin (31) in a radial direction to restrict an inner circumferential portion of the rubber ring (21) from bending deformation along an axial direction of the upper guide pin (31).
    Type: Application
    Filed: March 30, 2017
    Publication date: September 24, 2020
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Yuta MINOSHIMA, Toshifumi MAEHARA, Akihiko YAMAZAKI
  • Floating collar and one-piece guide pin and bolt assembly
    Patent number: 10781872
    Abstract: A guide pin assembly, comprising: (a) a sleeve; and (b) a guide pin comprising: (i) a head portion; and (ii) a shaft portion integrally formed with the head portion and extending through a hole of the sleeve, wherein an engaging portion of the shaft portion engages an internal surface of the sleeve, and the sleeve and the guide pin are substantially coaxial; and wherein the guide pin assembly is configured to be inserted in a borehole of a brake caliper.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: September 22, 2020
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Philip Nathanael Jedele, Michio Suzuki
  • FRICTION MATERIAL
    Publication number: 20200239327
    Abstract: A friction material includes granulated hematite fired particle. The granulated hematite fired particle has 25 ?m to 300 ?m of an average particle diameter. The granulated hematite fired particle has 30 mm3/g to 300 mm3/g of a fine pore volume.
    Type: Application
    Filed: August 8, 2018
    Publication date: July 30, 2020
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Takuya TAKADA, Motoyuki MIYAJI, Kentaro OWA
  • Friction material
    Patent number: 10690207
    Abstract: A friction material comprising: (a) at least one lubricant, wherein the at least one lubricant includes an amount of graphite, and wherein at least about 30 percent by weight of the graphite has a particle size of greater than about 500 microns using a sieve analysis; (b) at least one metal containing constituent for imparting reinforcement, thermal conductivity, and/or friction when the friction material is brought into contact with a movable member, wherein the at least one metal containing constituent includes iron and an iron containing compound; (c) a micro-particulated material; (d) one or more filler materials; (e) optionally at least one processing aid; (f) a balance being an organic binder, wherein the organic binder has less than 1 percent by weight of free phenol; wherein the friction material is free of asbestos and substantially devoid of copper.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: June 23, 2020
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventors: Sunil Kesavan, Xinming Shao
  • Disc brake device
    Patent number: 10670092
    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: Grant
    Filed: June 28, 2016
    Date of Patent: June 2, 2020
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Kazuhiro Yoshikawa, Kohei Noma
  • SINTERED FRICTION MATERIAL AND PRODUCTION METHOD FOR SINTERED FRICTION MATERIAL
    Publication number: 20200158200
    Abstract: A sintered friction material includes a copper component in an amount of 0.5% by mass or less, a titanate as a matrix, a ceramic material, and a lubricant. A method for manufacturing a sintered friction material includes a step of mixing raw materials including a titanate for forming a matrix, a step of molding the raw materials, and a step of sintering a molded body molded in the molding step. In the method, a sintering temperature in the sintering step is 900° C. to 1300° C.
    Type: Application
    Filed: June 18, 2018
    Publication date: May 21, 2020
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Hideaki TAKAHASHI, Katsuhiro ONODERA, Atsushi UENO
  • Motor with a motor brake
    Patent number: 10644566
    Abstract: A brake assembly comprising: (a) a caliper including: (i) one or more pistons, (b) one or more rotary to linear actuators that provides an axial force to move the one or more pistons, (c) a motor gear unit in communication with the one or more rotary to linear actuators, the motor gear unit including: (i) a motor, and (ii) a motor brake that prevents movement of the motor gear unit, the pistons, or both when the motor is turned off so that the brake apply is maintained, the motor brake including: (1) a rotor that is in communication with the motor, (2) a contact pad that is movable into contact with the rotor to prevent movement of the rotor and the motor, and (3) an electromagnet that is in communication with the contact pad and creates a brake retract.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: May 5, 2020
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventors: Waleed Al-Mahshi, Brian Boyle
  • Thermosetting resin composition, friction material and method for producing thermosetting resin composition
    Patent number: 10598240
    Abstract: A thermosetting resin composition includes a lignin derived from a lignocellulose, a lignocellulose fiber derived from the lignocellulose, and a thermosetting resin. In the thermosetting resin composition, the lignin derived from the lignocellulose and the lignocellulose fiber derived from the lignocellulose are dispersed in the thermosetting resin.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: March 24, 2020
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventor: Motoki Kuroe
  • Laminated shim for disc brake
    Patent number: 10598236
    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: Grant
    Filed: March 27, 2018
    Date of Patent: March 24, 2020
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Isao Tamaoki, Yuta Yamaguchi
  • Friction material
    Patent number: 10584757
    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: Grant
    Filed: November 22, 2016
    Date of Patent: March 10, 2020
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Takuya Takada, Hiroshi Tokumura, Toru Kawata
  • FRICTION MATERIAL COMPOSITION AND FRICTION MATERIAL
    Publication number: 20200063814
    Abstract: A friction material composition of the present invention includes a fibrous base, a friction regulator, and a binder and has a copper content of 0.5 mass % or less in terms of copper element amount. The friction material composition contains regenerated cellulosic fibers as the fibrous base. In an embodiment of the friction material composition, the regenerated cellulose fiber has a fiber length of 2 mm to 20 mm.
    Type: Application
    Filed: November 1, 2017
    Publication date: February 27, 2020
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Toru KAWATA, Takuya TAKADA, Motoyuki MIYAJI
  • Multi-piston caliper
    Patent number: 10539199
    Abstract: A caliper comprising: (a) an inboard side; (b) an outward side, wherein the inboard side and the outboard side include three or more bores that are radially staggered relative to two or more of the bores; and (c) a pocket located within a central region of the inboard side, the outboard side, or both; wherein the bores on the inboard side, the outboard side, or both are positioned so that: (i) all of the bores are located entirely radially below the pocket; (ii) none of the bores are located below the pocket; (iii) one or more of the bores are located partially radially below the pocket; (iv) one or more of the bores are located entirely radially below the pocket; (v) one or more of the bores are not located partially or entirely radially below the pocket; or (vi) a combination of (iii) through (v).
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: January 21, 2020
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventors: Kirby Lee Wilson, Andreas Keller, Adrian Smith
  • Disc brake apparatus
    Patent number: 10527114
    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: Grant
    Filed: April 20, 2016
    Date of Patent: January 7, 2020
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Kazuhiro Yoshikawa, Toshifumi Maehara
  • Electric park brake with electromagnetic brake
    Patent number: 10518761
    Abstract: A brake assembly comprising: (a) a caliper including: (i) one or more pistons, (b) one or more rotary to linear actuators that provides an axial force to move the one or more pistons, (c) a motor gear unit in communication with the one or more rotary to linear actuators, the motor gear unit including: (i) a motor, and (ii) an electromagnetic brake that prevents movement of the motor gear unit, the pistons, or both when the motor is turned off so that the brake apply is maintained.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: December 31, 2019
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventor: Carla Thomas
  • DISC BRAKE PAD AND DISC BRAKE DEVICE
    Publication number: 20190383339
    Abstract: A disc brake pad includes a lining and a back plate supporting a back surface of the lining. A first torque transmitting portion, which transmits a brake tangential force that acts toward one circumferential side at a time of braking, is provided at a part of the back plate projecting radially outward from an outer peripheral edge of the lining. A second torque transmitting portion, which transmits a brake tangential force that acts toward the other circumferential side at the time of braking, is provided at a part of the other circumferential end portion of the back plate that is located radially inward from an action line of the brake tangential force acting at the time of braking.
    Type: Application
    Filed: January 25, 2018
    Publication date: December 19, 2019
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Takaaki SASAKI, Hiroki EGAWA, Masaki SATO
  • OPPOSED-PISTON TYPE DISC BRAKE DEVICE
    Publication number: 20190383336
    Abstract: An opposed-piston type disc brake includes a guide cylinder extending axially inward from an opening edge portion of a cylinder in which an outer displacement member of a thrust generating mechanism is disposed is provided in an inner body of a caliper at an axial inner side portion of the inner body. A clamp base portion of a clamp member of a parking mechanism portion includes a housing hole opened to an axial outer side of the clamp base portion in which an inner side displacement member of the thrust generating member is disposed. A guide cylinder extending axially inward from an opening edge portion of the cylinder is fitted into the housing hole so as to relatively move in the axial direction, to form a first guide portion which supports the clamp member so that the clamp member is displaced relative to the cylinder in the axial direction.
    Type: Application
    Filed: June 13, 2019
    Publication date: December 19, 2019
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Tetsuya NOGUCHI, Hiroyuki KATO, Takayuki ICHIGE, Yoshio TOTSUKA
  • Multi-caliper brake assembly per rotor
    Patent number: 10458499
    Abstract: A brake system comprising: (a) a rotor; and (b) two or more brake assemblies in communication with the rotor, the two or more brake assemblies each including: (i) a caliper; (ii) a piston assembly located within the caliper; and (iii) a motor gear unit in communication with the caliper and configured to move the piston assembly to create a braking force; wherein one or more both of the piston assemblies are moved during a service brake apply or release; and wherein one or both of the piston assemblies are moved during a parking brake apply or release.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: October 29, 2019
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventors: Waleed Mahmoud Al-Mahshi, Gang Lou, Michio Suzuki
  • Friction material
    Patent number: 10461104
    Abstract: A subject for the invention is to provide a friction material which contains neither any copper component nor metallic fibers and which has stable frictional properties and excellent wear resistance and is less apt to attack mating materials. This invention relates to a friction 10-35% by volume potassium titanate having a plurality of protrudent shapes, 3-10% by volume abrasive material having a Moh's hardness of 7 or higher, and 10-30% by volume elastomer-modified phenolic resin.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: October 29, 2019
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Yoshiyuki Sugai, Katsuji Seki
  • CALIPER FOR OPPOSED PISTON TYPE DISC BRAKE
    Publication number: 20190316641
    Abstract: A belt-like rib that extends in a peripheral direction is provided to the outer surface, in the axial direction, of an outer body. The inner diameter side sections of the bottoms of outer cylinders at the outer diameter side and the outer diameter side sections of the bottoms of outer cylinders at the inner diameter side, all the cylinders being provided to the outer body so as to be separated into two stages in the radial direction, are covered with the belt-like rib from outside in the axial direction so as to traverse along the peripheral direction. The outer diameter side sections of the bottoms of the outer cylinders at the outer diameter side and the inner diameter side sections of the bottoms of the outer cylinders at the inner diameter side are made to protrude from the belt-like rib in the radial direction.
    Type: Application
    Filed: December 7, 2017
    Publication date: October 17, 2019
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventor: Takefumi MORIO
  • Multi-piston caliper
    Patent number: D894065
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: August 25, 2020
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventors: Kirby Wilson, Andreas Keller, Adrian Smith