Self-force-increasing Means Patents (Class 188/72.2)
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Patent number: 12133820Abstract: In one implementation, an electrically-actuated brake assembly is configured to control a rate of descent of an object to be lowered and includes: one or more rotatable surfaces coupled to the object to be lowered; one or more stationary surfaces configured to releasably engage the one or more rotatable surfaces; an electric actuator system configured to selectively disengage the one or more stationary surfaces from the one or more rotatable surfaces, thus allowing the one or more rotatable surfaces to rotate with respect to the one or more stationary surfaces and enable the object to be lowered; and a rechargeable power source electrically coupled to the electric actuator system and configured to provide electrical energy to the electric actuator system.Type: GrantFiled: May 12, 2022Date of Patent: November 5, 2024Assignee: Frigid Fluid CompanyInventors: Brian Yeazel, Marcin Sobas
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Patent number: 11953068Abstract: A parking brake apparatus for a vehicle including a motor section receiving electric power from an outside, and generating power; a power transmission section rotated by driving of 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 transmission gear section restraint unit selectively restraining driving of the load transmission unit in conjunction with rotation of the power transmission section.Type: GrantFiled: December 31, 2020Date of Patent: April 9, 2024Assignee: Hyundai Mobis Co., Ltd.Inventor: Moo Jin Choi
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Patent number: 11927219Abstract: The invention relates to bearing assembly (10) comprising at least one first bearing element (12) and one second bearing element (14) which are connected together along a longitudinal axis (16) in a rotatable manner relative to each other, wherein the bearing assembly (10) comprises a brake device (18), which inhibits the rotation of the two bearing elements (12, 14) relative to each other by means of a frictional force produced by the brake device (18), and an adjustment device (22), by means of which the brake force which is applied during the rotation the two bearing elements (12, 14) relative to each other can be modified, wherein an adjustment device (22) comprises at least two wedge elements (28, 32), each of which has a wedge surface (34, 36) that rests against each other and which can be moved relative to each other in a sliding manner against each other in order to modify the brake force.Type: GrantFiled: August 5, 2019Date of Patent: March 12, 2024Assignee: Ondal Medical Systems GmbHInventor: Nicolas Stroop
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Patent number: 11866124Abstract: A braking system includes a vehicle having a front brake and a rear brake. The system includes a moveable structure connected to a rear brake. The rear brake may be a hydraulic brake. When the rear brake is actuated, the moveable structure moves. The movement of the structure pressurizes hydraulic fluid in a tube which actuates a front hydraulic brake.Type: GrantFiled: May 28, 2021Date of Patent: January 9, 2024Assignee: Syscend, Inc.Inventors: Brian M. Riley, Roger Tong
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Patent number: 11293502Abstract: An example brake assembly comprises: a brake disk; an outer brake caliper disposed on a first side of the brake disk; an inner brake caliper disposed on a second side of the brake disk such that the brake disk is interposed between the outer brake caliper and the inner brake caliper; a mounting plate disposed adjacent to the inner brake caliper, wherein the mounting plate is coupled to the inner brake caliper and the outer brake caliper, and wherein the mounting plate comprises a slot; and a brake actuation lever pivotably coupled to the mounting plate and disposed through the slot of the mounting plate to interface with the inner brake caliper, wherein rotation of the brake actuation lever causes the inner brake caliper to move toward the outer brake caliper, thereby squeezing the brake disk between the inner brake caliper and the outer brake caliper.Type: GrantFiled: April 13, 2020Date of Patent: April 5, 2022Assignee: Parker-Hannifin CorporationInventor: Randall D. Thompson
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Patent number: 11028888Abstract: A self-amplifying safety brake for a disc is provided. The brake includes: a housing; a spring assembly oriented perpendicular to an axis of rotation of the disc, the spring assembly including a first spring end and a second spring end; a sleeve assembly co-axially housing the spring assembly, wherein movement of the sleeve assembly in a first co-axial direction compresses the spring assembly at the first spring end and movement of the sleeve assembly in a second co-axial direction decompresses the spring assembly at the first spring end; a spring compressor configured to move the sleeve assembly in the first and second co-axial directions; a brake plate for frictionally engaging the disc; a lever-cam assembly associated with the sleeve assembly and the brake plate, the lever-cam assembly configured to translate movement of the sleeve assembly in the first coaxial direction into movement of the brake plate away from the disc.Type: GrantFiled: June 3, 2016Date of Patent: June 8, 2021Assignee: DRILLFORM TECHNICAL SERVICES LTD.Inventors: Vladimir Scekic, Radu Gnasienco, Russell Turnbull, Kevin Batalha
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Patent number: 11028889Abstract: According to the present disclosure, there is provided a self-energizing brake caliper which comprises a caliper bracket fixed to a vehicle frame and comprising a rotation axis extending in the height direction of the vehicle; a first caliper arm rotatably connected to the rotation axis; a second caliper arm rotatably connected to the rotation axis and crossing the first caliper arm; an inboard brake pad; and an outboard brake pad. The first caliper arm is slidably connected at a first end of the inboard brake pad in the inboard side of the brake disc and the outer end of the first caliper arm is connected to a second end of the outboard brake pad. The second caliper arm is connected to the second end of the inboard brake pad in the inboard side of the brake disc and the outer end of the second caliper arm is slidably connected to the first end of the outboard brake pad. The driving force of an actuator is transferred to the inner ends of the first caliper arm and the second caliper arm.Type: GrantFiled: October 3, 2019Date of Patent: June 8, 2021Assignees: KYUNG CHANG INDUSTRIAL CO., LTD.Inventor: Kwangjin Michael Lee
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Patent number: 10801564Abstract: A disk brake actuated preferably by compressed air, for a motor vehicle, includes an application mechanism. The application mechanism has a brake rotary lever which acts on a traverse in which there is arranged at least one readjusting spindle which acts on an application-side brake pad, having a readjusting device, and having a quick contact apparatus. The quick contact apparatus effects an advancing movement which is superposed on an actuation of the disk brake during the phase of overcoming an air gap. The quick contact apparatus has an intermediate element which is variable in terms of its position and which has at least a wedge-shaped design.Type: GrantFiled: August 24, 2018Date of Patent: October 13, 2020Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventor: Johann Baumgartner
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Patent number: 10767715Abstract: A braking assembly for an air disc brake comprises an actuator assembly having a service portion, at least one mounting stud attached to the service portion, and an air disc brake caliper having a bore for receiving the at least one mounting stud. The mounting stud is pivotable with respect to the service portion for installation on the air disc brake caliper.Type: GrantFiled: October 11, 2018Date of Patent: September 8, 2020Assignee: Bendix Spicer Foundation Brake LLCInventors: Lonnie F Cool, Richard L Lantz
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Patent number: 10737675Abstract: Disclosed is a method for controlling a braking system for a motor vehicle, capable of implementing a parking brake function. The system includes a disk, a brake caliper and at least one piston to exert a disk clamping force on the disk, the braking system further including an electric drive unit moving the piston relative to the caliper and a hydraulic drive unit moving the piston relative to the caliper. The method includes at least one step of exerting a disk clamping force by moving the piston, by the electric drive unit and/or the hydraulic drive unit. The method includes a step of actuating the hydraulic unit by exerting a first clamping power on the piston, followed by a step of actuating the electric unit by exerting an additional clamping power, until a total power is obtained that is high enough to lock the disk.Type: GrantFiled: December 14, 2016Date of Patent: August 11, 2020Assignee: FOUNDATION BRAKES FRANCEInventors: Lennart Witte, Benoit Ghesquiere, Aleksander Hurwic
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Patent number: 10704629Abstract: An electric-wear adjusting device of a motor vehicle disc brake is provided for adjusting friction surface wear on the brake linings and brake disc of the disc brake having. having a brake application device, preferably with a rotary brake lever. The adjusting device includes an electric motor, a gear mechanism, and an output element. The output element is connected rotationally fixed to a clamping sleeve. The clamping sleeve has inwardly projecting longitudinal ribs on an inner side configured to cooperate with axial grooves of a threaded plunger of a wear-adjuster spindle unit. Also provided is a corresponding disc brake having the electric wear-adjusting device, and a method for measuring and setting air play and measuring wear of a disc brake having the electric wear-adjusting device.Type: GrantFiled: April 9, 2018Date of Patent: July 7, 2020Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventors: Alexander Fuchs, Robert Theil, Csaba Mlinarcsek, Janos Toth, Peter Kovacsik, Robert Trimpe
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Patent number: 10605315Abstract: A brake includes a caliper overlapping a disk. The brake also includes a first pad and a second pad which are carried by the caliper on either side of the disk. The brake further includes a first actuator including a first primary toothed wheel driving a first mobile piston pressing against the first pad in order to move same. The brake further includes a second actuator including a second primary toothed wheel driving a second mobile piston pressing against the second pad. The brake further includes a rotating shaft including a first and a second endless screw having opposite winding directions, the shaft being movable in translation. The brake further includes an electric motor for driving the rotating shaft. The first and second endless screws are engaged in the first and second primary toothed wheels respectively.Type: GrantFiled: December 19, 2016Date of Patent: March 31, 2020Assignee: FOUNDATION BRAKES FRANCEInventors: Didier Esnee, Thierry Pasquet, Pascal Champion
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Patent number: 10351117Abstract: A brake unit that allows the vehicle to evacuate safely in the event of brake failure while maintaining a braking performance. The brake unit is mounted on a vehicle together with a motor drive unit 2 to control brake force in accordance with a stroke of a brake pedal and a pedal force. Each brake system comprises: a stroke sensor; a pedal force sensor; a brake mechanism applying brake force to a driveshaft; a controller controlling the brake mechanism based on the stroke and the pedal force; and a powersource supplying electricity to the brake mechanism and the controller. The first controller 13 and the second controller support each other to control brake force.Type: GrantFiled: January 17, 2018Date of Patent: July 16, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroshi Isono
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Patent number: 10295005Abstract: A disc brake assembly is provided that includes a camshaft extending from a slack adjuster. A disc brake rotor and a brake caliper bridge having an outer plate and an inner plate are provided. A brake caliper carrier is provided with an outer brake pad contained by the brake caliper carrier and an inner brake pad contained by the brake caliper carrier. A cam carrier having two openings is provided along with a pusher plate having a first surface in contact with the cam and a second surface in contact with the inner brake pad. A first and a second slide pin each extend through an opening in the cam carrier and an opening in the pusher plate and an opening in the inner plate of the brake caliper bridge and into the brake caliper carrier. A cam is mounted onto the camshaft such that rotation of the camshaft will rotate the cam, and the brake caliper bridge inner plate having a surface in contact with the cam.Type: GrantFiled: August 10, 2017Date of Patent: May 21, 2019Assignee: CONSOLIDATED METCO, INC.Inventors: Spencer Aaron Lazaroff, Andrew James Stratton
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Patent number: 10137878Abstract: 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: GrantFiled: October 11, 2016Date of Patent: November 27, 2018Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.Inventor: George Ritter
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Patent number: 9989115Abstract: A brake system including a piston brake system and an integral parking brake system. The brake system includes a brake piston having a piston bore, and a brake pad. The parking brake system includes a rotary to linear stage mechanism located at least partially within the piston bore. During a brake apply, the brake piston and the brake pad are moved against a brake rotor to create a clamp force. During a parking brake apply, the rotary to linear stage mechanism transfers torque into a linear force to move the same brake piston and the same brake pad against the brake rotor to create a clamp force.Type: GrantFiled: August 26, 2016Date of Patent: June 5, 2018Assignee: AKEBONO BRAKE INDUSTRY CO., LTDInventors: Michio Suzuki, Aurelian Bahmata
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Patent number: 9605720Abstract: A friction brake device has a brake rotor that rotates around an axis of rotation, brake pads that can rotate around an axis of autorotation parallel to the axis of rotation, support members that support the brake pads respectively, and pressing devices that press the brake pads against the brake rotor respectively. In the friction brake device, when the brake pads are pressed against the brake rotor, the brake pads revolve around the axis of rotation relatively to the brake rotor while being frictionally engaged with lateral faces of the brake rotor respectively. The support members press the brake pads in a direction perpendicular to the axis of rotation, and frictionally engage outer peripheries of the brake pads with a cylindrical face of the brake rotor respectively. The brake pads auto-rotate around the axis of autorotation upon beginning to be pressed, but come to rest when the pressing force increases.Type: GrantFiled: April 7, 2012Date of Patent: March 28, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroshi Isono
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Patent number: 9574628Abstract: A radial spring for a disk brake pad and brake pads and brakes provided with such radial springs, in which the radial spring is for the lug of a brake pad. The spring includes a clamp and a supporting loop. The clamp is formed of a straight arm, an undulating bottom, and an arm in the shape of a Z, followed by the loop connected by a bend, followed by a bend with a large radius of curvature connected to the pad terminated by a turn that is almost at a right angle to the extremity of the pad.Type: GrantFiled: December 14, 2012Date of Patent: February 21, 2017Assignee: ROBERT BOSCH GMBHInventors: Simon Bernard, Sandra Merrien, Roger Mahoudeaux
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Patent number: 9416829Abstract: A caliper housing including a piston bore and a bridge extending between the piston bore and a pair of caliper fingers interconnecting the caliper fingers and the piston bore. The caliper fingers of the caliper housing extend downwardly from the bridge to define a flat surface. A rotor having a disc shape defines a first side and a second side and disposed adjacent to the caliper fingers. An outer brake pad defining a first centroid is disposed adjacent to the first side of the rotor abutting the caliper fingers allowing the caliper fingers to urge the outer brake pad into engagement with the first side of the rotor. Each of the caliper fingers defines a pivot edge extending between the outer brake pad and the flat surface of the caliper fingers allowing the outer brake pad to pivot about the pivot edge.Type: GrantFiled: August 2, 2011Date of Patent: August 16, 2016Assignee: BeijingWest Industries Co. Ltd.Inventors: Steven Glenn Hoxie, Martin John Reder
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Patent number: 9127735Abstract: A friction brake including a brake part, a friction lining, a friction surface, and a pressing device, arranged on the brake part, that is structured and arranged to press the friction lining against the friction surface. A holding part is located on the pressing device so that the friction lining rests against the holding part. An actuating part is located on the pressing device and rotatably mounted on the brake part and an actuator is structured and arranged to pivot the actuating part. A pin is rotatably mounted in the holding part and being arranged on the actuating part, and a rotational axis of the pin is eccentrically arranged with respect to a rotational axis of the actuating part.Type: GrantFiled: May 10, 2010Date of Patent: September 8, 2015Assignee: VE VIENNA ENGINEERING FORSCHUNGS-UND ENTWICKLUNGS GMBHInventors: Michael Putz, Daniel Auer
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Patent number: 9114787Abstract: A pressure generating device generates a hydraulic pressure as a result of a tensile or compressive load. The device has connections, one of which can be rigidly connected to a frame by way of a mechanism for introducing a mechanical tensile or compressive load, a pressure cylinder and a piston unit extending at least partially and flexibly in the pressure cylinder and bounding a hydraulic chamber filled with hydraulic fluid jointly with the pressure cylinder. The chamber has a simple and inexpensive construction. The connections are connected to the pressure cylinder or the piston unit by way of a coupling device that is configured such that the same hydraulic chamber has pressure applied thereto under tensile load and under compressive load.Type: GrantFiled: July 7, 2010Date of Patent: August 25, 2015Assignee: Siemens AktiengesellschaftInventors: Julian Ewald, Matthias Liermann, Christian Stammen
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Publication number: 20150114767Abstract: A friction brake device includes first and second pressing members which press frictional engagement members against a pair of friction surfaces, respectively, that are rotatable around a rotation axis as mutually opposed, a force transmission mechanism which transmits rotational torque between the pressing members, transforms the rotational torque into the force separating the pressing members from each other along the rotation axis through a wedge action, and transmits reaction force of the pressing force between the pressing members, a pressing force control mechanism which control the force with which at least one of the pressing members presses the associated frictional engagement member against the associated friction surface, and a rotational torque bearing member which bears the rotational torque transmitted from one of the pressing members to the other of the pressing members by way of the other pressing member.Type: ApplicationFiled: April 19, 2013Publication date: April 30, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroshi Isono
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Patent number: 9004238Abstract: A self-energizing disc brake includes a brake-internal hydraulic arrangement with a supply circuit and an expansion vessel, a brake application device with a brake application cylinder for applying a brake pad in the direction of a brake disc, a force transmission unit which supports the brake pad at a wedge angle on the brake application device, a tangential-force absorbing cylinder for switching over the wedge angle and being operatively connected to the force transmission unit; an electric-motor actuator which acts on the brake application device via the hydraulic arrangement, a distributor cylinder arranged in series between the electric-motor actuator and the brake application device for pressure boosting, and a control unit for controlling switchover of the wedge angle between the tangential-force absorbing cylinder and the electric-motor actuator. An adjusting device adjusts brake pad wear, and has a movable screw spindle, which is operatively connected to the brake application device.Type: GrantFiled: December 13, 2012Date of Patent: April 14, 2015Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventor: Bernhard Miller
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Patent number: 8991561Abstract: An elevator brake can comprise a brake shoe with a substantially curved shape, the brake shoe being rotatable in a brake shoe support. The brake shoe support is mounted in a brake housing and can be linearly displaced between a readiness setting and an engagement setting. The brake can be actuated by an actuator. The actuator can comprise a brake store for acting on the brake through a connecting point to bring the brake into its engaged setting. A force store in the actuator can be held electromagnetically, and a resetting device enables resetting of the force store and of the actuator into the operating position.Type: GrantFiled: March 18, 2011Date of Patent: March 31, 2015Assignee: Inventio AGInventor: Josef Husmann
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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: 20150075921Abstract: A friction brake device having: friction members which are pressed against a pair of friction surfaces that are rotatable around a rotation axis and opposed to each other; a force increasing mechanism which transmits rotational torque between the friction members, transforms the rotational torque to the force separating the friction members along the rotation axis through a wedge action, and thereby increasing the pressing force; a pressing force control mechanism which controls a force with which at least one of the friction members is pressed against the associated friction surface; and a normal position-recovering mechanism which returns the friction members to their normal positions when the force controlled by the pressing force control mechanism is 0.Type: ApplicationFiled: April 19, 2013Publication date: March 19, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroshi Isono
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Publication number: 20150060215Abstract: A friction brake device has a brake rotor which rotates around a rotation axis, brake pads as rotating friction members which rotate around an autorotation axis parallel to the rotation axis, rotational torque transmission devices which mutually transmit rotational torques between the brake rotor and the brake pads without depending on the friction force between the brake rotor and the brake pads, and pressing devices which press the brake pads against the brake rotor. The pressing devices press the brake pads against the brake rotor by way of non-rotating friction members which are supported so as not to rotate around the autorotation axis.Type: ApplicationFiled: April 7, 2012Publication date: March 5, 2015Applicant: TOYOTA JIDOSHA KABUSHIK KAISHAInventor: Hiroshi Isono
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Patent number: 8915336Abstract: A brake includes a brake shoe, an actuating element for pressing the brake shoe against a brake disc, and at least one lever disposed such that it increases the braking force applied by the brake shoe to the brake disc by deflecting a tangential force acting on the brake shoe during braking. The actuating element comprises at least one brake disc side part, an actuator side part, and a coupling part disposed between the brake disc side part and the actuator side part, wherein the coupling part can be pivoted relative to the brake disc side part and/or the actuator side part.Type: GrantFiled: July 1, 2009Date of Patent: December 23, 2014Assignee: WABCO GmbHInventors: Peter Beier, Gerhard Bruns, Olaf Jantz, Hartmut Rosendahl
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Patent number: 8910755Abstract: A self-energizing disc brake includes a brake caliper held on a fixed brake carrier, an active-side and a reaction-side brake pad, which may be pressed against a brake disc, an actuating device with a self-energizing device and an adjuster device for compensating pad and/or disc wear. The self-energizing device has at least one pressure ram, in contact on the front face with the active-side pad by way of a split bearing and fixed by the end thereof facing the brake pad to a guide plate movably held in the brake carrier, designed such that the split bearing is enclosed by a seal arrangement when the self-energizing device is in a non-functioning state.Type: GrantFiled: December 30, 2010Date of Patent: December 16, 2014Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventors: Johann Baumgartner, Robert Gruber, Aleksandar Pericevic, Steffen Geissler, Robert Trimpe
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Patent number: 8899386Abstract: A pneumatic disc brake has a caliper which straddles a brake disc, brake pads pressable against the brake disc, wherein a brake-application-side brake pad can be actuated by a brake lever of a brake application device pivotable about an eccentric axis. Against the end side, the brake lever bears a brake ram which is coupled at the other side to the brake pad or to a guide plate coupled thereto. Two pressure rams are aligned in the same direction and spaced apart from the brake ram. The pressure rams are connected in each case to the caliper and to the brake pad or to the guide plate and have a self-energizing device. The caliper has spherical-cap-shaped bearing receptacles in which rest corresponding plain bearing elements, by which the brake lever, and the pressure rams are supported on the caliper.Type: GrantFiled: January 31, 2011Date of Patent: December 2, 2014Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventors: Johann Baumgartner, Robert Gruber, Aleksandar Pericevic, Steffen Geissler, Robert Trimpe
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Publication number: 20140326547Abstract: The present invention provides a small brake cylinder device that can increase braking force output from a brake output portion that moves along with a rod, while suppressing an increase in the device size. A piston defines a pressure chamber and surrounds the axis of the rod inside a cylinder body, and moves in a linear direction that is parallel to the movement direction of the rod. When pressure fluid is supplied to the pressure chamber, the piston moves in the backward movement direction relative to the cylinder body in resistance to biasing force from a rod biasing spring. Swinging members of a force amplifying mechanism swing due to being biased by the piston moving in the backward movement direction, and moves the rod by biasing it in the forward movement direction. The force amplifying mechanism amplifies the drive force generated by the piston and applies it to the rod.Type: ApplicationFiled: November 16, 2012Publication date: November 6, 2014Applicant: NABTESCO CORPORATIONInventors: Masataka Yano, Tomoya Ohno
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Patent number: 8863914Abstract: A part-lining disk brake is described, having an electromechanical actuator, a self-energizing application device with a wedge arrangement designed to press a brake lining against a disk brake, and at least two wedge elements of the wedge arrangement moveable relative to one another, arranged on one of a brake caliper frame and an auxiliary frame. The wedge elements are used to apply the brake lining, and act on the brake lining via a trapezoidal pressure plate.Type: GrantFiled: January 18, 2007Date of Patent: October 21, 2014Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventors: Michael Herges, Bernhard Miller, Markus Stoehr
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Publication number: 20140251736Abstract: A disc brake includes a caliper main body configured to have a pad assembling space that is disposed across over a disc rotor and opens toward an approximate middle thereof in a rotor radial direction and a connector part that crosses the pad assembling space in a rotor axial direction, and a pad spring that is engaged with the connector part of the caliper main body by a pair of claw portions facing each other, is installed on the caliper main body, and biases the brake pads in a rotor rotational outlet direction and inward in the rotor radial direction. The pad spring has a symmetrical shape with respect to the center in a longitudinal direction thereof, and the pair of claw portions are engaged with the connector part in a state in which the center in the longitudinal direction is offset in a rotor rotational direction with respect to the center in the rotor rotational direction of the brake pads.Type: ApplicationFiled: March 6, 2014Publication date: September 11, 2014Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventor: Keisuke NANRI
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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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Patent number: 8783422Abstract: A system for a drive for actuating a parking brake operably involves a brake caliper. The brake caliper has at least one brake piston with a brake piston axis, the piston being actuatable by means of an operably actuating lever with a rotational center. An electric motor is fixed to the brake caliper and mechanically coupled to the actuating lever with the output shaft that exits the electric motor.Type: GrantFiled: January 12, 2011Date of Patent: July 22, 2014Assignee: IMS Gear GmbHInventor: Wolfram-Heinrich Hofschulte
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Patent number: 8714316Abstract: An electric brake device includes a brake pad, an axial force sensor and a controller. The brake pad is pressed against a rotation face of a brake rotor in a direction perpendicular to the rotation face. The axial force sensor detects a pressure of the brake pad. The controller performs a speed reduction control which is an operation target, based on at least one of the pressure of the brake pad and a reduced speed obtained from a wheel speed sensor.Type: GrantFiled: December 9, 2010Date of Patent: May 6, 2014Assignee: Akebono Brake Industry Co., Ltd.Inventor: Hidekazu Hori
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Patent number: 8702179Abstract: A brake system for a vehicle includes brake cylinders operated by pressurized fluid for actuation of brakes by means of pressurized fluid on at least one first axle of the vehicle. The brakes on at least one other, second, axle can be actuated exclusively electromechanically in response to an electrical braking request signal. The pressure of the pressurized fluid can be modulated indirectly or directly and the electrical braking request signal can be generated indirectly or directly in response to actuation of a brake pedal of a brake pedal device. A service brake function is provided by means of hybrid use of the brakes on the first axle(s) together with the brakes on the second axle(s). The brake cylinders operated by pressurized fluid are pneumatically operated brake cylinders. The pressure modulated by the brake pedal device is a pneumatic pressure, and the pressurized fluid is compressed air.Type: GrantFiled: December 23, 2008Date of Patent: April 22, 2014Assignee: WABCO GmbHInventors: Peter Beier, Henning Förster, Hartmut Rosendahl, Gerhard Bruns, Olaf Jantz, Wolfgang Strache
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Patent number: 8657080Abstract: The annular disk brake comprises a rotor disk and at least one brake pad provided on each side of the rotor disk. The brake pad or pads on one side are connected to a substantially axially-guided brake pad carrier. The brake has a force transmitting arrangement creating a force increasing amplification between an axially-actuated member and the carrier. This arrangement can increase the brake compactness and provide an even distribution of the braking force around the circumference of the rotor disk. A method of increasing a brake pad clamping force is also disclosed.Type: GrantFiled: November 27, 2008Date of Patent: February 25, 2014Assignee: Asteria Performance Inc.Inventor: Alain Constans
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Patent number: 8616347Abstract: A pneumatic disc brake includes a caliper which straddles a brake disc, brake pads pressable against the brake disc and a rotary lever actuated brake application device, and a self-energizing mechanism. The brake lever is pivotable about an eccentric axis by a brake cylinder plunger. A self-energizing factor is selected to ensure that the brake automatically releases after braking events. The brake lever is supported on a spherical bearing element mounted to the caliper and forming the eccentric axis. The brake lever bears against a bearing ball which is arranged above the bearing element in the direction of the plunger engagement point, which bearing ball is positioned in a brake ram coupled to the brake pad.Type: GrantFiled: January 31, 2011Date of Patent: December 31, 2013Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventors: Johann Baumgartner, Robert Gruber, Aleksandar Pericevic, Steffen Geissler, Robert Trimpe
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Patent number: 8596426Abstract: In an electric linear motion actuator, planetary rollers 7 rotatably supported on their radially inner surfaces by respective support pins 6b are radially inwardly biased by radially compressible ring springs 18 enveloping the support pins 6b, thereby biasing and pressing the respective planetary rollers 7 against the radially outer surface of a rotary shaft 4. Thus, it is possible to stably transmit torque of the rotary shaft 4 to the respective planetary rollers 7 without applying a preload to the planetary rollers 7 with a negative gap between the radially outer surface of the rotary shaft 4 and the radially inner surface of the outer ring member 5.Type: GrantFiled: February 17, 2009Date of Patent: December 3, 2013Assignee: NTN CorporationInventors: Tatsuya Yamasaki, Masaaki Eguchi, Katsuhisa Yamaguchi, Tomoaki Makino
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Patent number: 8573711Abstract: A vehicle braking apparatus that can exert high braking performance during vehicle braking is implemented by a control mode that can be realized in a braking apparatus (10) of usual hardware. In controlling the braking apparatus (10) of a vehicle, a climb rate of a wheel cylinder braking oil pressure (Pw) is decreased smaller than a climb rate corresponding to a climb rate of a master cylinder oil pressure (Pm) from a time point at which the wheel cylinder braking oil pressure (Pw) reaches a predetermined threshold value. The time point at which the wheel cylinder braking oil pressure (Pw) reaches the predetermined threshold value (P3) is estimated based on the climb process of the master cylinder oil pressure (Pm) or directly detected.Type: GrantFiled: January 15, 2009Date of Patent: November 5, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hidehisa Kato, Junji Kawamuro, Tetsuhiro Narita
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Patent number: 8528707Abstract: Disclosed is a disc brake for a vehicle, such as an electronic wedge brake, capable of preventing a disc from being subject to the moment due to misalignment of inner and outer friction members with respect to a disc. The disc brake includes a disc rotating together with a vehicle wheel, inner and outer friction pads disposed at both sides of the disc, respectively, a wedge unit installed at rear sides of the inner and outer friction pads to press the inner and outer friction pads against the disc, a driving device that operates the wedge unit for a braking operation, and a sync member for synchronizing braking positions of the inner and outer friction pads with respect to the disc. Since the disc is prevented from being subject to the moment, uneven wear does not occur in the friction member and/or the disc and deformation of the disc is prevented.Type: GrantFiled: December 4, 2009Date of Patent: September 10, 2013Assignee: Mando CorporationInventor: Myoung June Kim
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Patent number: 8511439Abstract: A self-energizing disk brake is described. The brake includes an electric actuator in which an activation force is amplified using a self-energizing device arranged between the electric actuator and a brake lining. The system includes a brake application unit for applying the brake lining to a brake disk with an application movement of the brake lining, relative to the brake disk, having a component extending parallel to a rotational axis of the brake disk and another component extending tangentially to the rotational axis of the brake disk. At least one electromotive drive for activating the brake application unit and at least two brake plungers of the brake application unit are provided. Pressure surfaces of the brake plungers have a recess with a ramp shaped contour for engagingly receiving a rolling element.Type: GrantFiled: September 28, 2005Date of Patent: August 20, 2013Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventors: Johann Baumgartner, Matthias Seidenschwang, Dirk Ganzhorn, Luise Ulrike Bieker nee Rothe
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Patent number: 8448757Abstract: The invention relates to an electromechanical friction brake, for example in the form of a disc brake having an electromechanical actuation device. The electric motor of the actuation device presses a frictional brake lining against a brake disc by means of a reduction gearbox and a ball ramp mechanism. The actuation device is supported by a spring washer that is pretensioned so strongly that when the disc brake is released it acts on a segment with a falling spring characteristic; that is, a spring force exerted by the spring washer on the frictional brake lining increases with increasing tension of the disc brake.Type: GrantFiled: November 14, 2008Date of Patent: May 28, 2013Assignee: Robert Bosch GmbHInventors: Herbert Vollert, Bertram Foitzik, Willi Nagel, Bernd Goetzelmann, Dirk Hofmann, Nguyet-Minh Cao
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Patent number: 8448756Abstract: A procedure for actuating a parking brake is described, the parking brake comprising a brake piston which is received in a hydraulic chamber and is displaceable within the hydraulic chamber by means of a hydraulic actuator on the one hand and a mechanical actuator on the other. During operation of the parking brake the mechanical actuator is activated in a first step in order to displace the brake piston in the hydraulic chamber in such a way that a volume of a hydraulic fluid contained in the hydraulic chamber is increased. At a subsequent time the hydraulic actuator is activated in order to build up or increase a clamping force of the parking brake. The hydraulically generated or increased clamping force is then maintained by means of the mechanical actuator.Type: GrantFiled: December 11, 2008Date of Patent: May 28, 2013Assignee: Lucas Automotive GmbHInventor: Josef Knechtges
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Patent number: 8439170Abstract: The invention relates to a self-reinforcing electromechanical disc brake having a brake caliper produced by means of shaping, in one piece with a housing for electromechanical parts of an actuating device of the disc brake, with the housing forming a dimensionally stable hollow body. It is possible in this way to produce a bending-resistant and torsionally rigid brake caliper with a low wall thickness.Type: GrantFiled: June 14, 2006Date of Patent: May 14, 2013Assignee: 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: 20130098715Abstract: A self-energizing disc brake includes a brake-internal hydraulic arrangement with a supply circuit and an expansion vessel; a brake application device having a cylinder for applying a brake pad toward a brake disc; a force transmission unit supporting the brake pad at a wedge angle on the brake application device; a tangential-force absorbing cylinder for switching over the wedge angle, which is operatively connected to the force transmission unit; an electric-motor actuator for acting on the brake application device via the hydraulic arrangement; and a control unit. The force transmission unit has a deflection lever and a shoulder element attached thereto. Rolling surfaces thereof are in contact with respective corresponding rolling surfaces of a brake application element of the cylinder and a brake pad support device. The deflection lever has a pressure section with a rolling surface in operative connection with the tangential-force absorbing cylinder.Type: ApplicationFiled: December 13, 2012Publication date: April 25, 2013Applicant: KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBHInventor: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
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Patent number: 8393440Abstract: Disclosed is a brake device, particularly a disc brake, comprising a caliper, brake drum, or similar, and energy accumulator, especially an accumulator spring. The energy accumulator rests on the caliper or similar while being supported on an abutment by means of a lever arm. A mechanism for transmitting resilient forces between the energy accumulator embodying one spring element is created with the aid of a lever arm via the abutment. The brake device is characterized in that the lever arms can take at least two or more different angular positions relative to each other in relation to the abutment.Type: GrantFiled: April 5, 2007Date of Patent: March 12, 2013Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventors: Johann Baumgartner, Aleksandar Pericevic
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Patent number: 8220593Abstract: A self-energizing disc brake having an electric actuator in which an activation force applied to the actuator is amplified using a self-energizing device arranged between the actuator and brake lining is described. The device has a brake application unit for applying at least one brake lining to one side of a brake disc by carrying out an application movement of the brake lining relative to the brake disc, the application movement having at least a first movement component in a direction parallel to a rotational axis of the brake disc and a second movement component in a direction tangential to the rotational axis of the brake disc. The device also has at least one electromotive drive for activating the brake application unit.Type: GrantFiled: September 28, 2005Date of Patent: July 17, 2012Assignee: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbHInventors: Johann Baumgartner, Matthias Seidenschwang, Ernst Dieter Bieker, Luise Ulrike Bieker nee Rothe, legal representative, Dirk Ganzhorn
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Publication number: 20120168264Abstract: A friction brake including a brake part, a friction lining, a friction surface, and a pressing device, arranged on the brake part, that is structured and arranged to press the friction lining against the friction surface. A holding part is located on the pressing device so that the friction lining rests against the holding part. An actuating part is located on the pressing device and rotatably mounted on the brake part and an actuator is structured and arranged to pivot the actuating part. A pin is rotatably mounted in the holding part and being arranged on the actuating part, and a rotational axis of the pin is eccentrically arranged with respect to a rotational axis of the actuating part.Type: ApplicationFiled: May 10, 2010Publication date: July 5, 2012Applicant: VE VIENNA ENGINEERING FORSCHUNGS-UND ENTWICKLUNGS GMBHInventors: Michael Putz, Daniel Auer