Self-adjusting Means Patents (Class 188/71.8)
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Patent number: 12139115Abstract: Disclosed is an electromechanical brake system including a pair of pad plates to which brake pads for pressing a brake disc rotating together with a wheel are attached, a carrier on which the pair of plates are installed, a caliper housing slidably installed on the carrier, a piston installed in the caliper housing to move forward and backward, a power conversion device configured to move the piston forward and backward to press the pair of pad plates toward the disc, an actuator including a motor provided to provide a rotational force to the piston and a reduction device provided to reduce the rotational force of the motor and transmit the reduced rotational force to the power conversion device, and a controller provided to control the motor, wherein the controller is configured to determine whether a braking operation mode and a braking release mode are continuously repeated, determine, when the braking operation mode and the braking release mode are continuously repeated, whether a clamping force between tType: GrantFiled: June 17, 2021Date of Patent: November 12, 2024Assignee: HL MANDO CORPORATIONInventors: Jaehoon Jang, Gunwoo Kang
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Patent number: 11879511Abstract: A disc brake assembly having brake pads, a brake carrier, a caliper, and an actuating arrangement. The caliper is slidable with respect to the brake carrier for clamping and release of a rotor by the brake pads. The actuating arrangement is configured to selectively move the caliper and the brake carrier relative to each other generally transverse to a first longitudinal axis so as to lock or inhibit sliding of the caliper relative to the carrier.Type: GrantFiled: February 17, 2022Date of Patent: January 23, 2024Assignee: Meritor Heavy Vehicle Braking Systems (UK) LimitedInventors: Alex Szafnauer, Sean Cleary, Tim Smith, Anthony Williams, Paul Thomas
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Patent number: 11821483Abstract: An electric motor control device includes a control board that controls the driving of an electric motor and temperature detecting portions disposed on the control board at least at two locations that differ in temperature change tendency.Type: GrantFiled: February 20, 2019Date of Patent: November 21, 2023Assignee: HITACHI ASTEMO, LTD.Inventor: Haruhiko Fujita
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Patent number: 11815144Abstract: The invention relates to a pad clip (5), comprising at least one retainer (6) for supporting a brake pad (2), and at least one retraction spring (10) for retracting the brake pad (2) in an axial direction upon a brake release, the retraction spring (10) having a spring body (17) with a first portion (11), a second portion (12), and an intermediate portion (13) connecting the first and second portions (11, 12), the first portion (11) comprising a contact portion (14) for contacting the brake pad (2), the second portion (12) being configured to be attached to a calliper support bracket (3), wherein the material of the first portion (11) axially extending between the contact portion (14) and the intermediate portion (13) is configured to be stretched in the axial direction upon a brake action and to return to its unstretched state upon a brake release. The invention also relates to a calliper support bracket (3) and a brake assembly (1).Type: GrantFiled: March 16, 2021Date of Patent: November 14, 2023Assignee: HL MANDO CORPORATIONInventor: Andrea Mezzabotta
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Patent number: 11718283Abstract: A brake assembly having a sensor assembly that is received inside a shaft of a wear adjuster mechanism. The wear adjuster mechanism may be at least partially received inside a piston that may be rotatable about the axis and may be at least partially received in a tappet. The sensor may provide a signal that is indicative of rotation of the shaft.Type: GrantFiled: September 18, 2020Date of Patent: August 8, 2023Assignee: ArvinMeritor Technology, LLCInventors: Sukrut Sakhare, Daniel Philpott, Alexander Adkins, Christopher Polmear
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Patent number: 11649863Abstract: A disc brake (1) for motor vehicles includes at least two brake pads (25, 26), an application unit (4) with a setting spindle (5) arranged axially in the direction of the brake pads (25, 26), and a resetting device (7) for central adjustment of the setting spindle (5) after reaching a degree of wear of the brake pads (25, 26). The resetting device (7) has a housing (8), a sensor (9), a resetting shaft (10), and an adapter (11) with a decentral output (12). In one example, the adapter (11) has a cover (13) and a chain drive (14) for to transmitting an actuating movement from the decentral output (12) to the resetting shaft (10).Type: GrantFiled: June 10, 2020Date of Patent: May 16, 2023Assignee: ZF CV Systems Europe BVInventors: Hans-Christian Jungmann, Martin Stumpf
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Patent number: 11518359Abstract: A parking brake apparatus for a vehicle including a motor section receiving electric power, and generating power; a power transmission section rotated by driving the motor section; a pair of pressing units receiving power from the power transmission section and pressing a brake pad; a load transmission unit installed between the pair of pressing units, connected to each of the pair of pressing units, and transmitting a pressing load of any one of the pair of pressing units to the other pressing unit; and a caliper housing having installed therein the pressing units, wherein the motor section is mounted to an upper surface of the caliper housing.Type: GrantFiled: September 16, 2020Date of Patent: December 6, 2022Assignee: HYUNDAI MOBIS CO., LTD.Inventor: Jae Hyun Kwon
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Patent number: 11193547Abstract: An electromechanical brake apparatus includes a housing supporting an inboard brake pad and an outboard brake pad for selective frictional contact with a rotor interposed longitudinally therebetween. The housing includes a mechanism cavity located longitudinally between the inboard pad and a motor having a sun gear motor output shaft. An adjuster ramp assembly indirectly receives torque from the motor. A spindle is provided for selectively moving the inboard brake pad longitudinally. The spindle is operatively connected with the adjuster ramp assembly to indirectly receive torque from the motor therethrough. A leading ramp assembly is configured to transmit applied torque from the motor to the adjuster ramp assembly. The leading ramp assembly receives stepped-up torque from the motor via the sun gear motor output shaft and a plurality of planet gears located radially between the sun gear motor output shaft and a toothed inner lumen of the leading ramp assembly.Type: GrantFiled: March 31, 2020Date of Patent: December 7, 2021Assignee: ZF Active Safety US Inc.Inventors: Kraig E. Gerber, Galus Chelaidite
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Patent number: 11168746Abstract: A coupling for an AWD vehicle comprises a disc package with alternate discs, which are connected for rotation with, but are axially movable in relation to an ingoing and an outgoing axle, respectively, of the coupling, and a hydraulic piston for pressing the disc package together under the action of hydraulic pressure, hereby establishing a connect mode, in which the ingoing axle is connected to the outgoing axle. A coupling slack adjuster is provided for mechanically establishing a rest position for the hydraulic piston in a disconnect mode, in which a predetermined slack in the disc package is established, irrespective of the wear of the discs.Type: GrantFiled: November 14, 2018Date of Patent: November 9, 2021Assignee: BorgWarner Sweden ABInventor: Johan Nilsson
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Patent number: 11143251Abstract: A disk brake includes an attachment member (11) having a pair of pin support sections (26) in which pin holes (29) extending in a disk axial direction are formed and disposed to cross an outer circumferential side of a disk, and fixed to a non-rotating section of a vehicle, a caliper (13) having slide pins (30) slidably inserted into the pin holes (29) at both sides in a disk circumferential direction and movably supported by the attachment member in the disk axial direction, and a pair of pads movably supported by the attachment member and pressed against both surfaces of the disk by the caliper, wherein the slide pin includes a pin main body having an annular groove (153) on a tip side, and a tubular elastic deformation member (131) having a plurality of convex sections (162) on an inner circumferential side and provided in the annular groove (153).Type: GrantFiled: January 17, 2018Date of Patent: October 12, 2021Assignee: HITACHI ASTEMO, LTD.Inventors: Hayuru Inoue, Tsuyoshi Chiba
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Patent number: 10823241Abstract: A disc brake having an actuation mechanism, a wear adjustment mechanism that includes a manual rewind apparatus having a manual adjuster shaft; a brake caliper having a housing cavity and an inboard wall, an inboard support interface, and an outboard support interface. The inboard support interface is located within the housing cavity, outboard of the inboard wall.Type: GrantFiled: August 7, 2018Date of Patent: November 3, 2020Assignee: Meritor Heavy Vehicle Braking Systems (UK) LimitedInventor: Refaat Malki
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Patent number: 10711858Abstract: An adjuster assembly for manually adjusting the position of a brake pad relative to a brake rotor of a disc brake, the assembly comprising: a continuous wear sensor; and a manual rewind apparatus to manually reset the position of the brake pad when replacement thereof is required; the manual rewind apparatus comprising a shaft arranged to extend into a housing of the disc brake; wherein the continuous wear sensor is arranged to be located within the housing of the disc brake and is located proximate to the shaft.Type: GrantFiled: May 23, 2019Date of Patent: July 14, 2020Assignee: Meritor Heavy Vehicle Braking Systems (UK) LimitedInventors: Dietmar Knoop, Sean Cleary
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Patent number: 10677303Abstract: A disc brake, a wear adjuster for a disc brake and a method for operating a disc brake are provided. The wear adjuster includes a pawl biased by a spring against, and actuated by, a rotary lever, a shaft with the ratchet wheel arranged to be rotated by the pawl when the rotary lever rotates in a brake release direction, and a tappet wheel threaded on a brake application tappet supported on a movable bridge in the disc brake caliper. During brake release the pawl rotates the ratchet wheel and the shaft. The shaft and the tappet wheel have gearing which rotates the tappet wheel with the shaft. Due to the threaded engagement of the tappet wheel and the non-rotating tappet, the rotating tappet wheel causes the tappet to advance relative to the bridge to compensate for brake pad wear.Type: GrantFiled: February 6, 2018Date of Patent: June 9, 2020Assignee: Bendix Spicer Foundation Brake LLCInventor: Fred W. Berwanger
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Patent number: 10626938Abstract: A subassembly for an electromechanical brake actuator and electromechanical brake actuator comprising the subassembly, wherein the subassembly comprises a drive device for generating a torque and a gear mechanism for transmitting the torque, the gear mechanism comprising, one behind the other, a first, a second and a third gear stage. The second gear stage is configured as a planetary gear set.Type: GrantFiled: September 17, 2015Date of Patent: April 21, 2020Assignee: Lucas Automotive GmbHInventors: Sagar Sambhaji Kumbhar, Andrew Hoodless, Joern Borowski, Christoph Muenz
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Patent number: 10563716Abstract: Disclosed is a disc brake of a motor vehicle including a brake disc, a stationary holder, a brake pad mounted such that it slides axially in the stationary holder, and at least one elastic return spring for the elastic return of the brake pad towards the idle position thereof. The elastic return spring includes a portion for fixing the spring to the stationary holder, which includes a rigid fixing blade received in a complementary machined part of the stationary holder of the disc brake.Type: GrantFiled: February 5, 2016Date of Patent: February 18, 2020Assignee: FOUNDATION BRAKES FRANCEInventors: Alexandre Foucoin, Didier Montegu, Xavier Labarre
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Patent number: 10344633Abstract: An adjusting device, in particular for adjustment of a camshaft of an internal combustion engine, is disclosed. The adjusting device includes a brake unit which has at least one brake disc and at least one electromagnet for actuating the brake unit. The electromagnet has a yoke and an armature formed separately from the brake disc, where the brake disc is disposed at least partially spatially between the yoke and the armature of the electromagnet.Type: GrantFiled: March 15, 2014Date of Patent: July 9, 2019Assignee: Daimler AGInventors: Alexander Gaisberg-Helfenberg, Markus Lengfeld, Jens Meintschel, Thomas Stolk
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Patent number: 10309472Abstract: A disk brake is proposed for a vehicle, preferably a commercial vehicle, having a brake caliper, a brake application device, an adjusting device, a brake lever, and a mechanism which couples the brake lever to the drive element. The brake caliper engages over a brake disk and brake linings on both sides of the brake disk. The brake application device can be actuated by way of a force element, preferably a pneumatic force element. The adjusting device compensates for the brake lining and brake disk wear. The adjusting device is arranged on an adjusting axis which extends in the brake application direction, and is provided with a drive element which can be rotated about the adjusting axis.Type: GrantFiled: January 11, 2016Date of Patent: June 4, 2019Assignee: BPW BERGISCHE ACHSEN KGInventors: Thomas Klaas, Michael Pehle, Andreas Dowe
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Patent number: 10253835Abstract: A brake caliper is provided with a timing and retraction controller, a brake pad and a lock-connection comprising an engaging component and a locking component. The timing and retraction controller adjusts brake timing, eliminates parasitic brake losses and dampens out-of-plane vibration between the brake pad and rotor. The brake caliper includes a housing disposed over a brake rotor; first and second opposing brake pads extendably and retractably mounted on opposite sides of the caliper housing, brake pistons that extend and retract the brake pads into and out of frictional engagement with the rotor, and brake pad timing and retraction controllers disposed on opposite sides of the caliper housing. Each controller includes a Belleville spring or other resilient member with a short compression travel limited to between about 1.50 mm and 0.025 mm.Type: GrantFiled: November 10, 2016Date of Patent: April 9, 2019Assignee: PERFORMANCE FRICTION CORPORATIONInventor: Mark Wagner
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Patent number: 10161445Abstract: A bearing is described that has a first race on a lever side that is curved in a partially cylindrical manner. The bearing has a second race on a pressure piece side that is curved in a partially cylindrical manner. Rolling elements are present that roll on both the first and second races and are grouped together in a bearing cage. A radial projection, which is fixed in terms of rotation relative to the second race and forms a stop which limits the mobility of the bearing cage in one circumferential direction, is present. A pocket or opening, which is arranged in the first race or extends partially into the first race, is also present.Type: GrantFiled: August 24, 2015Date of Patent: December 25, 2018Assignee: BPW BERGISCHE ACHSEN KGInventor: Thomas Klaas
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Patent number: 10001187Abstract: A brake caliper is provided with a timing and retraction controller that that adjusts brake timing, eliminates parasitic brake losses and dampens out-of-plane vibration between the brake pad and rotor. The brake caliper includes a housing disposed over a brake rotor; first and second opposing brake pads extendably and retractably mounted on opposite sides of the caliper housing, brake pistons that extend and retract the brake pads into and out of frictional engagement with the rotor, and brake pad timing and retraction controllers disposed on opposite sides of the caliper housing. Each controller includes a Belleville spring or other resilient member with a short compression travel limited to between about 1.50 mm and 0.025 mm.Type: GrantFiled: December 6, 2016Date of Patent: June 19, 2018Assignee: PERFORMANCE FRICTION CORPORATIONInventors: Donald L. Burgoon, Peter N. Babbage, Nihal Murthy, Darin E. Cate
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Patent number: 9835212Abstract: A motor vehicle disc brake assembly comprises a caliper having a cavity, a brake disc rotatable relative to the caliper, a brake lining mounted to the caliper, a piston mounted in the cavity for displacing the brake lining against the brake disc, and an electromechanical actuator for supporting the piston. The electromechanical actuator has a drive assembly operably connected to a spindle, a rotationally restrained spindle nut threaded on the spindle, and an anti-rattle clip coupling together the piston and spindle nut. Rotation of the spindle by the drive assembly moves the spindle nut to support the piston.Type: GrantFiled: March 17, 2015Date of Patent: December 5, 2017Assignee: Kelsey-Hayes CompanyInventor: Darpan Patel
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Patent number: 9803712Abstract: Monitoring a brake that includes first and second braking surfaces and a magnetizing device that, in response to the electric current supplied to them, are arranged to generate a magnetic field that is arranged to move the braking surfaces from a closed state, in which the braking surfaces are connected to each other, to an open state, in which the braking surfaces are separated from each other. Determining the electric current of the brake as the braking surfaces begin to move from the closed state to the open state, determining the maximum electric current of the magnetizing device of the brake in the open state, determining the condition of the brake as a current ratio from the electric current measured as the braking surfaces start to move to the maximum electric current.Type: GrantFiled: October 3, 2013Date of Patent: October 31, 2017Assignee: KONECRANES GLOBAL CORPORATIONInventor: Aapo Jantunen
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Patent number: 9739325Abstract: The invention relates to a brake actuator for an aircraft hydraulic brake, which is intended to be added into one of the cavities of a brake ring, the actuator comprising a liner (1) designed to be housed sealingly in the cavity of the ring, a piston (3) mounted to slide sealingly in the liner along an axis of sliding (X) so as to apply a braking force on friction pads when a fluid is introduced under pressure into the cavity, and having a determined operational travel, a wear compensation device (10) which defines a position to which the piston retreats into the liner by means of a mobile stop (11) that can be moved forward by the piston as a braking force is applied, and an elastic return member (16) returning the piston towards the retracted position bearing against the mobile stop.Type: GrantFiled: November 19, 2015Date of Patent: August 22, 2017Assignee: MESSIER-BUGATTI-DOWTYInventors: Jean-Baptiste Robin, Robin Lucienne
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Patent number: 9593729Abstract: A brake assembly includes a housing, a brake element configured to be operatively associated with an axle for resisting rotation of the axle, and a piston configured to be selectively moved into and out of braking engagement with the brake element. The brake assembly further includes a slack adjustment mechanism for limiting movement of the piston when the piston is moved out of braking engagement with the brake element. The slack adjustment mechanism includes a shuttle configured to be engaged by the piston, and a plurality of stop elements carried by the shuttle and configured to be moved off the shuttle into a well of the housing. Movement of the piston is stopped when the shuttle engages an end wall of the well or one of the stop elements in the well.Type: GrantFiled: April 27, 2015Date of Patent: March 14, 2017Assignee: Caterpillar Inc.Inventors: Josh Nolke, Mirko Barbir, John Gates
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Patent number: 9512892Abstract: A brake caliper is provided with a timing and retraction controller that that adjusts brake timing, eliminates parasitic brake losses and dampens out-of-plane vibration between the brake pad and rotor. The brake caliper includes a housing disposed over a brake rotor; first and second opposing brake pads extendably and retractably mounted on opposite sides of the caliper housing, brake pistons that extend and retract the brake pads into and out of frictional engagement with the rotor, and brake pad timing and retraction controllers disposed on opposite sides of the caliper housing. Each controller includes a Belleville spring or other resilient member with a short compression travel limited to between about 1.50 mm and 0.025 mm.Type: GrantFiled: April 7, 2010Date of Patent: December 6, 2016Assignee: PERFORMANCE FRICTION CORPORATIONInventors: Donald L. Burgoon, Peter N. Babbage, Nihal Murthy, Darin E. Cate
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Patent number: 9457774Abstract: A technique for determining an actuating force applied to a vehicle brake is described, wherein the vehicle brake is equipped with an electromechanical brake actuator, and wherein a first actuating-force component is generated mechanically by actuating the electromechanical brake actuator and a second actuating-force component is generated hydraulically by actuating a hydraulic pressure source. A method aspect comprises the steps of detecting a first parameter relative to the electromechanical brake actuator and indicating the first actuating-force component, determining a second parameter indicating the second actuating-force component from a progression of the detected first parameter, and determining the actuating force applied to the vehicle brake from the first and the second parameters.Type: GrantFiled: March 2, 2012Date of Patent: October 4, 2016Assignee: Lucas Automotive GmbHInventor: Josef Knechtges
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Patent number: 9205825Abstract: An electric caliper includes an electric drive mechanism which generates a pressing force for pressing a friction pad against a disc rotor, and a retraction mechanism provided in a piston of a pressing mechanism. The mechanism includes a reversing member which is compressed by a force transmission portion and a pressing portion of the piston to thereby generate a reverse force. Also, the mechanism includes a movable element which relatively retracts due to the reverse force, and a first elastic member which is compressed by the movable element and the advancing force transmission portion to thereby apply a restoring force. Thus, in the mechanism, the reversing member generates the reverse force as a result of advancement of the force transmission portion, and the movable element relatively retracts due to the reverse force and compresses the first elastic member.Type: GrantFiled: June 8, 2010Date of Patent: December 8, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroshi Isono
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Patent number: 9163684Abstract: Disclosed is a disc brake including a carrier on which a pair of pad plates are movably installed and a caliper housing, which is slidably installed on the carrier and is provided with a cylinder having a piston mounted so as to move forward and backward by a hydraulic braking pressure, the disc brake including: an adjuster installed in the piston to prevent the pad plates from moving away from a disc and to maintain the pad plates at a constant distance from the disc; a push rod installed in the cylinder, a front portion thereof being screw-coupled to the adjuster and a rear portion thereof being provided with a flange extending toward an inner circumferential surface of the cylinder; a ramp unit into which the rear portion of the push rod is inserted and which is installed in the cylinder and compresses the push rod toward the piston in cooperation with a parking cable to prevent rotation of the push rod; a spring case having an end portion of one side thereof fixed to the cylinder and forming a predeterminType: GrantFiled: June 13, 2014Date of Patent: October 20, 2015Assignee: MANDO CORPORATIONInventors: Seon-ki Hong, Young-hun Kong
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Patent number: 9088185Abstract: An electromechanical actuator is provided with a power disconnection mechanism including a case portion, inner shaft portion, supporting portions, and connecting members. The case portion is fixed to an electric motor. The inner shaft portion within the case portion is fixed to a screw portion. The supporting portions are installed so as to support a load parallel to the axial direction between the case portion and the inner shaft portion, inserted into the inner shaft portion, and slidable along axial grooves and circumferential grooves with respect to the case portion. The connecting members break connection between the case portion and the inner shaft portion and disconnect transmission of power when torque of a prescribed amount or larger acts.Type: GrantFiled: October 31, 2012Date of Patent: July 21, 2015Assignee: Nabtesco CorporationInventors: Ryota Shigetomo, Yasuyuki Shirai
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Patent number: 9062726Abstract: A disc brake device includes a disc rotor, which rotates around a rotation axis, friction pads opposed to friction surfaces of the disc rotor, a first member provided on a fixed part on a vehicle body side, a second member supported so as to be slidable relative to the first member by a slide mechanism, a third member, which holds the friction pads and is supported so as to be swingable relative to the second member around a swing axis in a radial direction of the disc rotor as a center of swing by a swing mechanism, and a return mechanism provided on the swing mechanism to apply force to the third member to restore the same to an initial position in a swing direction. Therefore, the disc brake device has an effect of inhibiting abnormal noise.Type: GrantFiled: December 2, 2011Date of Patent: June 23, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazutoshi Nishii, Mikio Gomi, Junichi Tanoue
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Publication number: 20150122594Abstract: A brake actuator for an aircraft hydraulic brake, insertable in a cavity of a brake ring. The actuator comprises a liner (1) designed to be housed sealingly in the cavity of the ring, a piston (3) mounted to slide sealingly in the liner along an axis of sliding (X) so as to apply a braking force when a fluid is introduced under pressure into the cavity, and a wear compensation device (10) which defines a position to which the piston retreats into the liner by means of mobile stop (11) that can be moved forward by the piston as a braking force is applied. An elastic return member (16) returns the piston towards the position of retreat bearing against the mobile stop. The wear compensation device extends between the liner and the piston, downstream of a seal extending between the liner and the piston so as not to be bathed in the fluid in the cavity, the stop being held still by friction on the liner.Type: ApplicationFiled: October 30, 2014Publication date: May 7, 2015Applicant: MESSIER-BUGATTI-DOWTYInventors: Robin LUCIENNE, Christophe VERDURMEN
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Publication number: 20150122595Abstract: A braking actuator for a hydraulic aircraft brake, received in a cavity of a ring of the brake. The actuator comprises a liner structure (1) sealed in the cavity of the ring, and a piston (3) slidably mounted in the liner structure to apply a braking force. A wear-compensating device (10) defines a retreated position of the piston in the liner structure by an axially movable stop (11) which can be advanced by the piston during the application of a braking force and in frictional relationship with a fixed part (18) of the wear-compensating device secured to the liner. An elastic member (24) returns the piston to the retreated position defined by the piston bearing against the movable stop, the movable stop being in frictional relationship with the fixed part via at least one telescopic intermediate element (16) interposed between the movable stop (11) and the fixed part (18).Type: ApplicationFiled: October 31, 2014Publication date: May 7, 2015Applicant: MESSIER-BUGATTI-DOWTYInventors: Jacques BUSSIERE, Vincent GONZALEZ, Marie-Laure DE CRESCENZO
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Publication number: 20150122596Abstract: A brake caliper of a hydraulic brake system comprises several pistons, each of which is slidably disposed in a cylinder along the axis of the cylinder, several brake pads that are forced against a brake disk by the pistons upon actuation of the brake, and at least one spring device having a base and opposite legs that extend from the base to the brake pads. The opposite legs extend from a side of the base to a brake pad that is disposed on the opposite side.Type: ApplicationFiled: December 2, 2014Publication date: May 7, 2015Inventor: Michael Ruopp
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Patent number: 8985284Abstract: 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: GrantFiled: October 5, 2011Date of Patent: March 24, 2015Assignee: Hitachi Automotive Systems, Ltd.Inventors: Takahiro Ito, Kenichiro Matsubara, Hirotaka Oikawa
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Publication number: 20150068852Abstract: A wear adjustment device is provided for the adjusting friction surface wear on a brake pad and a brake disc of a disc brake having a brake application device, preferably with a rotary lever. The wear adjustment device can be coupled on the drive side to the brake application device, and on the output side to a spindle unit. A respective rolling body arrangement is axially arranged on both sides of a drive element, one of which is designed as a roller bearing and one is designed as a ball ramp coupling. A central shaft is coupled to the ball ramp coupling and has an output interface for coupling to the spindle unit. A radial freewheel is coupled to the ball ramp coupling by an overload spring unit and to the central shaft. A directionally-dependent torque device is provided, along with a housing in which the drive element, the rolling body arrangements, the overload spring unit, the radial freewheel, the central shaft and the directionally-dependent torque unit are arranged.Type: ApplicationFiled: November 17, 2014Publication date: March 12, 2015Inventors: Ralf WEBER, Thomas EICHLER, Paul HABERL-GUENTHNER, Igor NESMJANOWITSCH
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Publication number: 20150053511Abstract: Disclosed is a disc brake including a carrier on which a pair of pad plates are movably installed and a caliper housing, which is slidably installed on the carrier and is provided with a cylinder having a piston mounted so as to move forward and backward by a hydraulic braking pressure, the disc brake including: an adjuster installed in the piston to prevent the pad plates from moving away from a disc and to maintain the pad plates at a constant distance from the disc; a push rod installed in the cylinder, a front portion thereof being screw-coupled to the adjuster and a rear portion thereof being provided with a flange extending toward an inner circumferential surface of the cylinder; a ramp unit into which the rear portion of the push rod is inserted and which is installed in the cylinder and compresses the push rod toward the piston in cooperation with a parking cable to prevent rotation of the push rod; a spring case having an end portion of one side thereof fixed to the cylinder and forming a predeterminType: ApplicationFiled: June 13, 2014Publication date: February 26, 2015Inventors: Seon-ki HONG, Young-hun KONG
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Publication number: 20150047929Abstract: A brake system and method of adjusting a brake. The method may include the steps of providing a mechanically operated brake including friction material, providing a rotor, providing an adjuster for adjusting a running clearance between the friction material and the rotor, providing a sensor system for determining a likelihood of a braking event, and upon a determination of a change in the likelihood of a braking event operating the adjuster to adjust the running clearance of the brake.Type: ApplicationFiled: July 31, 2014Publication date: February 19, 2015Inventors: Prashant NARULA, Martin Pors TAYLOR, Mikael HANSSON
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Patent number: 8944221Abstract: A disc brake, particularly for a commercial vehicle, includes a brake caliper configured as a sliding caliper, two brake pads, which are disposed in the brake caliper, at least one guide spar for fastening the brake caliper to a stationary carrier, a brake application device, effective via at least one adjusting spindle, an adjusting device, which is non-rotatably connected to the adjusting spindle, for compensating brake pad wear, and a restoring device, disposed on the action side and having a restoring element that is elastically deformable if the brake caliper is displaced as a function of the braking operation and by which the caliper can be automatically brought into a starting position. The disc brake is configured such that the restoring device has a supporting part, which remains in position relative to the brake anchor plate if the brake caliper is displaced as a function of the braking operation, and which interacts with the resilient restoring element.Type: GrantFiled: July 6, 2009Date of Patent: February 3, 2015Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventors: Aleksandar Pericevic, Stephan Pitzing, Johann Baumgartner, Steffen Geissler, Robert Trimpe
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Patent number: 8893862Abstract: A brake adjuster mechanism including an input shaft, a one-way clutch, and a torque limiting clutch. The input shaft is coupled to an input element of the torque limiting clutch. The one-way clutch is coupled to the torque limiting clutch. The torque limiting clutch further includes an output element and a coupling portion, with the coupling portion including a projection for selectively rotationally coupling the input element and the output element. One of the input element and output element includes a first recess circumferentially spaced from a second recess. The projection is selectively biased into the first recess and the second recess. The input element is frictionally coupled by a friction device to the output element to resist rotation of the input element relative to the output element.Type: GrantFiled: March 27, 2012Date of Patent: November 25, 2014Assignee: Meritor Heavy Vehicle Braking Systems (UK) LimitedInventors: Refaat Malki, Martin Pors Taylor
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Patent number: 8893860Abstract: A brake device for a work vehicle includes a brake unit including a brake disc plate and a piston having a slide portion slidably supported by an axle housing and a pressure portion for pressing the brake disc plate. A slack adjuster mechanism is disposed on the axially opposite side of the brake disc plate with respect to the piston while being disposed further on an inner peripheral side than the slide portion of the piston. The slack adjuster mechanism maintains a clearance between the piston and the brake disc plate at a predetermined clearance by mechanically adjusting a non-actuated position of the piston.Type: GrantFiled: October 11, 2012Date of Patent: November 25, 2014Assignee: Komatsu Ltd.Inventors: Hiroaki Ohnogi, Fumiaki Nakada, Keita Naruge
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Patent number: 8881874Abstract: Disclosed herein is a disc brake which may improve restoration of a piston which occurs when braking operation is terminated. The disc brake having a carrier and a caliper housing includes an adjuster installed inside the piston to maintain the pad plates at a distance from the disc, a pull-rod installed in the cylinder, a front portion thereof being screwed to the adjuster and a rear portion thereof being provided with a flange extending toward an inner circumferential surface of the cylinder, a support member coupled with a rear wall of the cylinder to support the pull-rod and seal an inside of the cylinder, a spring case adapted to have one end fixed to the support member and form a predetermined accommodating space, and an elastic member arranged in the accommodating space of the spring case to return the piston to an original position thereof.Type: GrantFiled: January 25, 2013Date of Patent: November 11, 2014Assignee: Mando CorporationInventor: Young Hun Kong
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Patent number: 8875848Abstract: In a method for displacing and storing brake fluid for a hydraulic brake system of a vehicle which brake system has at least one hydraulic accumulator, at least one brake booster and at least one brake circuit, the brake booster is configured in such a manner, that even without an action of the driver, actuation of the brake booster allows a volume of brake fluid to be automatically displaced. The brake fluid is displaced into the hydraulic accumulator and stored, by automatic actuation of the brake booster, and at least a portion of the stored brake fluid is emptied by the hydraulic accumulator into the brake circuit as a function of the operating state of the brake system.Type: GrantFiled: May 5, 2010Date of Patent: November 4, 2014Assignee: Robert Bosch GmbHInventors: Herbert Vollert, Reinhard Weiberle
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Patent number: 8875851Abstract: A combined electromechanical vehicle brake has a hydraulically activated operating brake and an electromechanically activated parking brake apparatus. A hydraulic operating pressure chamber in a brake housing is delimited by a brake piston that can be loaded by hydraulic pressure to carry out operating braking actions. The brake piston can be activated along a longitudinal piston axis to achieve a braking effect. The parking brake apparatus acts upon the brake piston by a gear unit because the gear unit converts the rotational movement of an electromechanical actuator into a translational movement, causing the brake piston to be activated to carry out parking brake processes and remain in the activated position. The gear unit has a threaded spindle and a threaded nut that contact one another via a plurality of rolling elements. A spring element allows the rolling elements to slip when the gear unit is activated in the unloaded state.Type: GrantFiled: March 17, 2010Date of Patent: November 4, 2014Assignee: Continental Teves AG & Co. oHGInventor: Thomas Winkler
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Patent number: 8833526Abstract: An electric brake apparatus compares an estimated thrust force corresponding to a predetermined rotational position of an electric motor, which is calculated from an electric current/thrust force conversion function, with a reference thrust force based on a rotational position/thrust force table indicating a relationship between the rotational position of the electric motor and a thrust force of a piston to correct and update the electric current/thrust force conversion function, thereby maintaining a predetermined control accuracy despite wear of a brake pad and other changes over time.Type: GrantFiled: January 30, 2012Date of Patent: September 16, 2014Assignee: Hitachi Automotive Systems, Ltd.Inventors: Daisuke Goto, Hirotaka Oikawa, Takuya Usui
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Patent number: 8827050Abstract: A wear adjustor is provided for adjusting the wear of brake pads and a brake disc of a pneumatic disc brake having a brake application device actuated by a rotary lever. The wear adjustor is preferably inserted into an adjusting spindle of the brake application device. An axial bearing is formed axially on a side of a drive ring, and a ball ramp coupling with a freewheel function is formed axially on the opposite side of the drive ring. The ball ramp coupling has balls and a drive socket which is arranged axially, on the drive side, between the axial bearing and the balls thereof, a cone clutch being arranged between the clutch ring on the output side and an elastic sleeve for a cylinder spring. The cone clutch has the output-side clutch ring and a cone socket connected to the elastic sleeve, and clamping balls are arranged between the output-side clutch ring and the cone socket.Type: GrantFiled: January 28, 2011Date of Patent: September 9, 2014Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventors: Johann Iraschko, Georg Kempinger, Florian Orgler
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Patent number: 8827053Abstract: 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: GrantFiled: March 19, 2007Date of Patent: September 9, 2014Assignee: Robert Bosch GmbHInventors: Chi-Thuan Cao, Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann, Hans Frick
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Publication number: 20140238788Abstract: An adjustment device is provided for adjusting the wear of brake pads and a brake disk of a disc brake, in particular of a pneumatically actuated disc brake. The disc brake includes a brake application device actuated by a rotary lever, which brake application device has an adjusting spindle into which the adjustment device is insertable. The adjustment device is attached to a brake caliper of the disc brake by way of a bearing disk. The adjustment device is provided with a spindle and at least one friction pairing, each friction pairing having two contact surfaces. The friction pairing has a curved cross-section of at least one of its two contact surfaces.Type: ApplicationFiled: May 2, 2014Publication date: August 28, 2014Applicant: KNORR-BREMSE Systeme Fuer Nutzfahrzeuge GmbHInventor: Martin TROPP
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Patent number: 8794393Abstract: A disc-brake unit (10) for vehicles on rails, comprising a brake pincer consisting of a pair of jaws (14), provided with relative friction gaskets (16), intended to rub on the two opposite surfaces of a disc (12). The jaws (14) are hinged at one of the ends of a pair of levers (18). The levers (18) are pivoted on respective hinges (20) fixedly connected to the main body of the braking unit (10), and are actuated by a braking force motor (22) provided with at least one first piston (26) that moves with alternate motion along an axis (A). The braking unit (10) also comprises a group (68) for automatically regulating the clearances between the friction gaskets (16) and the disc (12).Type: GrantFiled: July 30, 2007Date of Patent: August 5, 2014Assignee: POLI Costruzione Materiali Trazione S.R.L.Inventor: Vasil Argirovski
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Publication number: 20140209418Abstract: A disc brake, in particular for a commercial vehicle, including a brake caliper, which reaches over a brake disc and in which brake pads are positioned that can be pressed against the brake disc on both sides by means of at least one brake application device and that each have a lining carrier plate and a friction lining fastened thereto. The brake application device has at least one brake piston that acts on the lining carrier plate at the end face of the brake piston. The disc brake is designed such that at least one of the brake pads is supported in an articulated, preferably pivotable, manner in the radial direction of the brake disc.Type: ApplicationFiled: March 28, 2014Publication date: July 31, 2014Applicant: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventor: Wolfgang PAHLE
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Patent number: 8763765Abstract: A disk brake of a rail vehicle, having a brake caliper, the caliper arms of which are coupled with one end to brake shoes and with the other end to a wear adjuster, the length of the wear adjuster is adjustable by a control mechanism depending on the stroke of a brake force motor. A control rod of the control mechanism acts upon an adjusting element of the wear adjuster, the adjusting element includes a freewheeling mechanism mounted in a housing of the wear adjuster and a stop section of the adjusting element loaded in a self-adjusting starting position against a stop of the housing by at least one return spring element. The stop contains at least one element that is elastic in the direction of abutment.Type: GrantFiled: January 27, 2011Date of Patent: July 1, 2014Assignee: Knorr-Bremse System fur Schienenfahrzeuge GmbHInventors: Christian Ebner, Michael Lehneis, Diego Rodriguez