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.
Abstract: A torque transferring assembly that includes: a first output; a second output; and a spider located in between the first output and the second output. The spider is adapted to support a plurality of torque transferring elements such that each of the torque transferring elements are in communication with both of the first output and the second output. The torque transferring assembly is adapted to supply a torque to both the first output and the second output so that both outputs rotate together until a load or resistance acting on the first output becomes higher than a load or resistance acting on the second output. The torque transferring assembly is then adapted to transfer the torque to the second output so that the first output slows or ceases to rotate, while the second output continues to rotate.
Abstract: A brake system that includes a brake piston, a rotary to linear stage mechanism, and a clutch. The brake piston extends along a longitudinal axis. The brake piston includes a piston pocket. The rotary to linear stage mechanism includes a spindle and a nut. The nut is received in the piston pocket. The brake system is operable in a first braking application and in a second braking application. During the first braking application, the clutch is adapted to provide for the nut to rotate about the longitudinal axis. During the second braking application, the clutch is adapted to restrict or prevent the nut from rotating about the longitudinal axis.
Abstract: A brake system including a motor; a rotary to linear stage mechanism; and a torque locking mechanism. The rotary to linear stage mechanism in communication with the motor. The torque locking mechanism in communication with the motor. The torque locking mechanism comprises an electromagnet and a permanent magnet. During a brake apply the motor is adapted to move the rotary to linear stage mechanism so that at least one brake pad or at least one brake shoe is moved against a surface to create a clamp force. The electromagnet and the permanent magnet are adapted to cooperate to maintain the created clamp force.
August 4, 2017
Date of Patent:
September 10, 2019
Akebono Brake Industry Co., Ltd.
Galus Chelaidite, Waleed Al-Mahshi, Carla Thomas
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.
Abstract: A disc brake caliper includes an outer body, an inner body, and joining parts connecting the inner body and the outer body with each other at both end portions in a circumferential direction of a rotor so as to form an opening part. An inward end edge of both end edges in the circumferential direction of at least one of the joining parts, which defines an end part of the opening part in the circumferential direction, is inclined relative to an axial direction of the rotor towards a central part in the circumferential direction of the outer body from the inner body side to the outer body side, so that a length of the opening part in the circumferential direction is shortened from the inner body side to the outer body side.
Abstract: A support portion (23) has three screw insertion portions (23d1, 23d2, and 23d3) which is fixed to a caliper, and arranged so as to surround an output shaft (39). Therefore, it is possible to firmly fix a case (21) to the caliper at these fixing locations. Additionally, since the fixing locations are determined so as to collectively define a “plane”, it is possible to effectively inhibit a sway of the case (21) with respect to the caliper. Furthermore, it is possible to inhibit a twist of the case (21), and it is possible to sufficiently support a vehicle requiring large torque such as a truck.
December 10, 2015
Date of Patent:
July 9, 2019
Mitsuba Corporation, Akebono Brake Industry Co., Ltd.
Abstract: A pad clip for a disc brake includes: a radial pressing portion which is disposed at inward than a clamping portion in a radial direction and presses outward in the radial direction an ear portion; a circumferential pressing portion which extends outward in the radial direction from a radially outer side portion of the clamping portion, an intermediate portion thereof being folded back inward in radial and circumferential directions of the rotor, and a tip end portion thereof pressing the pad inward in the circumferential direction; and a spring holding portion which protrudes outward in the circumferential direction from the radially outer side portion of the clamping portion than a base portion of the circumferential pressing portion, and holds a return spring which is made of wire material and presses the pad away from the rotor in an axial direction of the rotor.
December 19, 2018
July 4, 2019
AKEBONO BRAKE INDUSTRY CO., LTD.
Akihiko SEKIGUCHI, Yuta MINOSHIMA, Daisuke KOBAYASHI
Abstract: A friction material composition containing an alkali metal salt as a friction adjusting material. The alkali metal salt is spherical and porous. The alkali metal salt has an average particle diameter of 20 ?m to 240 ?m. A friction material is produced by using the friction material composition.
Abstract: A linear stage assembly comprising a nut having a wall defining a bore which has a nut helical thread which includes: a crest, a root, and a flank between the crest and root; a screw having a screw helical thread about an exterior which includes: a crest, a root, and a flank between the crest and the root; wherein the nut and the screw are in a mating relationship so that the nut flank and the screw flank are in contact with one another defining a contact interface which imposes a frictional force that is sufficiently small to allow generally longitudinal movement in response to an actuation load of the screw or the nut relative to the other and sufficiently large to prevent back drive of the screw or the nut relative to the other after the actuation load is removed and in response to an opposing reaction force.
Abstract: A brake caliper assembly that includes a caliper body and a support member. The caliper body includes an inboard wall; an outboard wall; and a transverse wall connecting the inboard wall and the outboard wall. The support member is adapted to connect the brake caliper assembly to a vehicle. The support member is connected to the inboard wall at more than two support connections.
Abstract: In a friction pad assembly for a disc brake, a plurality of lining assemblies supported on a guide plate are pressed to a disc rotor. The lining assembly includes a friction material and a back plate portion. A plate fitting portion of the lining assembly is inserted and equipped to a guide hole portion, and braking torque is transmitted from the plate fitting portion to the guide plate. A plurality of link plates applying pressing force from a torque receiving plate to the lining assembly are provided between the torque receiving plate and the back plate portion adhered to the guide plate. A damping layer sandwiched between inner surfaces of the torque receiving plate is provided on back surface sides of the link plates.
Abstract: A brake system that includes a brake piston that includes a piston pocket. A nut is located inside the piston pocket. During a brake apply, the brake piston is adapted to move a brake pad against a brake rotor to create a clamping force. During the brake apply, the nut is moved with the brake piston.
Abstract: A brake piston includes a piston pocket. The piston pocket receives a nut that is axially moveable along a center axis. The nut is restricted from rotating within the piston pocket when a torque due to a frictional engagement between a nut seal and an inner pocket wall, one or more projections, or both is greater than an it torque at the nut. The nut is rotatable within the piston pocket when a torque due to the frictional engagement between the nut seal and the inner pocket wall, the one or more projections or both is less than the input torque at the nut and is less than the torque due to the frictional engagement between the piston and the piston seal.
Abstract: A brake caliper housing having: an inner body having one or more inner piston bores open toward a rotor gap; an outer body having: one or more outer piston bores open toward the rotor gap, a bridge structure which extends over the rotor gap, and a plurality of reinforcing structures included in the bridge structure; wherein a longitudinal plane passes through both the inner body and the outer body; wherein the plurality of reinforcing structures extend at an angle away from the longitudinal plane as the plurality of reinforcing structures extend from an exterior surface of the outer body over the rotor gap; and wherein one or more bridge fasteners parallel to the longitudinal plane secure the bridge structure to the inner body so that the bridge structure connects the outer body to the inner body.
Abstract: A brake piston that includes a body and a cap. The cap is free to move or pivot relative to the body. The body is adapted to generally maintain axial alignment with a piston bore that is adapted to support the brake piston, and the cap is free to move or pivot relative to the body and the piston bore.
Abstract: An assembly that includes a parking brake system including two or more spindle/nut devices. The two or more spindle/nut devices include a high efficiency device and a low efficiency device. The high efficiency device is in communication with a first end of a brake pad, and the low efficiency device in communication with a second end of the brake pad. The high efficiency device moves the first end of the brake pad against a braking surface, and the low efficiency device moves the second end of the brake pad against the braking surface. After one or both of the ends of the brake pad are moved against the braking surface and a clamping force is created, the low efficiency device locks and prevents movement of the high efficiency device so that the clamping force is maintained.
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.
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.