Screw Or Helical Cam Patents (Class 188/72.8)
  • Patent number: 10865842
    Abstract: Disclosed herein is an electronic disc brake. The electronic disc brake according to one embodiment of the present disclosure includes a disc configured to be rotated with a wheel, a caliper housing configured to operate pad plates installed at both sides of the disc, and an actuator including a piston provided in the caliper housing and configured to press the pad plates to bring the pad plates into contact with the disc, a spindle rotatably installed in the caliper housing to move the piston forward and backward, a motor configured to rotate the spindle, and a speed reduction apparatus configured to transmit a rotational force of the motor to the spindle, wherein the speed reduction apparatus includes a power connecting unit connected to the motor, a bracket provide above the motor and configured to support the power connecting unit, and a speed reduction gear unit configured to sequentially connect the power connecting unit and the spindle.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: December 15, 2020
    Assignee: MANDO CORPORATION
    Inventor: Joon-Kyu Song
  • Patent number: 10823242
    Abstract: A brake apparatus for vehicle may include: a pair of pressurization units configured to receive driving force from a drive unit and pressurize a brake pad; and a load transmitting unit installed between the pair of pressurization units and coupled to the pair of pressurization units to transmit a pressurizing load of any one of the pair of pressurization units to another one of the pair of pressurization units.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: November 3, 2020
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Moo Jin Choi
  • Patent number: 10502277
    Abstract: A parking brake mechanism achieves a parking brake function using a friction material operation mechanism driven by a main brake motor. The parking brake mechanism includes a parking brake motor provided coaxially with one of rotational shafts transmitting a torque from the main brake motor to the friction material operation mechanism. A linear motion mechanism moves a rotor of the motor and an engaging mechanism. The engaging mechanism includes a rotor-side engaging portion and a housing-side engaging portion engaging with each other when the rotor is moved linearly to a predetermined position by the linear motion mechanism. Engagement of the engaging mechanism achieves a pressing force holding function of holding an angle of the rotational shaft against a reaction force of the pressing force of a friction material.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: December 10, 2019
    Assignee: NTN CORPORATION
    Inventor: Yui Masuda
  • Patent number: 10458499
    Abstract: A brake system comprising: (a) a rotor; and (b) two or more brake assemblies in communication with the rotor, the two or more brake assemblies each including: (i) a caliper; (ii) a piston assembly located within the caliper; and (iii) a motor gear unit in communication with the caliper and configured to move the piston assembly to create a braking force; wherein one or more both of the piston assemblies are moved during a service brake apply or release; and wherein one or both of the piston assemblies are moved during a parking brake apply or release.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: October 29, 2019
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventors: Waleed Mahmoud Al-Mahshi, Gang Lou, Michio Suzuki
  • Patent number: 10449935
    Abstract: In a method for controlling a parking brake in a vehicle, in order to set a clearance between the brake pad and the brake disk, a supply voltage is first applied to an electric motor, after which the supply voltage is switched off before the brake pad comes into contact with the brake disk.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: October 22, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Frank Baehrle-Miller, Andreas Englert, Tobias Putzer
  • Patent number: 10408289
    Abstract: A brake system including a motor; a rotary to linear stage mechanism; and a torque locking mechanism. The rotary to linear stage mechanism in communication with the motor. The torque locking mechanism in communication with the motor. The torque locking mechanism comprises an electromagnet and a permanent magnet. During a brake apply the motor is adapted to move the rotary to linear stage mechanism so that at least one brake pad or at least one brake shoe is moved against a surface to create a clamp force. The electromagnet and the permanent magnet are adapted to cooperate to maintain the created clamp force.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: September 10, 2019
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventors: Galus Chelaidite, Waleed Al-Mahshi, Carla Thomas
  • Patent number: 10352383
    Abstract: The electric brake device includes an electric motor, a brake rotor, a friction pad, a conversion mechanism, a braking force command section, a braking force estimation section, a controller, and a power supply device. The controller includes: a power determination section to determine whether an amount of remaining power that can be supplied from a power supply device to the electric motor has become equal to or less than a determined value; and a residual pressure cancellation section to cancel a residual pressure of a braking force by driving the electric motor in a direction opposite to a brake pressing direction such that an estimated value of the braking force obtained by the braking force estimation section becomes equal to or less than a set value, when the power determination section determines that the amount of remaining power has become equal to or less than the determined value.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: July 16, 2019
    Assignee: NTN CORPORATION
    Inventors: Yui Masuda, Tatsuya Yamasaki
  • Patent number: 10234009
    Abstract: In a differential limiting device for a vehicle, when rotary motion of an electric motor is converted by a screw mechanism into linear motion of a nut member in a direction of a first axis C1 of a side gear shaft, and a piston mounted on the nut member is moved in a direction opposite to a direction to depress frictional engagement elements, the piston and a clutch drum are relatively non-rotatably engaged. Therefore, differential rotation of a pair of side gears is mechanically limited. Thus, rotation of one electric motor makes it possible to generate differential limiting torque for limiting differential rotation of the pair of side gears in a rear-wheel differential device.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: March 19, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Mizuki Imafuku
  • Patent number: 10215265
    Abstract: It is an object of the present invention to improve seal performance in an electric linear motion actuator configured to linearly drive a linear motion member due to the rotation of a rotary shaft. The linear motion member is constituted by a cylindrical member slidably fitted in a housing, and a pressing member coupled to the distal end portion of the cylindrical member so as to close the opening of the distal end of the cylindrical member. The portion of the pressing member coupled to the cylindrical member is located inside of a boot sealing the space between the distal end portion of the housing and the distal end portion of the linear motion member.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: February 26, 2019
    Assignee: NTN CORPORATION
    Inventor: Tatsuya Yamasaki
  • Patent number: 10071718
    Abstract: A setting device, particularly a motor vehicle parking brake includes a remotely-operated drive, a hollow shaft, a spindle shaft and an elastic element. The hollow shaft is driven by the remotely-operated drive so that the hollow shaft rotates. The spindle shaft moves relative to the hollow shaft within the hollow shaft due to the rotation of the hollow shaft. The spindle shaft is connected to a brake cable such that the spindle shaft can apply and release the brake as it moves in different directions within the hollow shaft. The elastic element is loaded due to movement of the hollow shaft as the hollow shaft is driven in an attempt to release the brake while the brake cable is blocked.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: September 11, 2018
    Assignee: BROSE FAHRZEUGTEILE GMBH & CO. KOMMANDITGESELLSCHAFT, WÜRZBURG
    Inventors: Norbert Deutloff, Ekkehard Kraft, Stephan Roos, Armin Sauer
  • Patent number: 9605723
    Abstract: The present disclosure provides an actuator assembly comprising a ballnut having a helical track, an actuator drive unit (“ADU”) housing having an ADU track, and a ballscrew. In various embodiments, the ballscrew comprises a first translation bearing track, wherein the helical track and the first translation bearing track form a first translation bearing raceway in which a plurality of first translation bearing balls having a first diameter are disposed, and a second translation bearing track, wherein the helical track and the second translation bearing track form a second translation bearing raceway in which a plurality of second translation bearing balls having a second diameter are disposed, wherein the first diameter and the second diameter are not equal.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: March 28, 2017
    Assignee: GOODRICH CORPORATION
    Inventors: Kevin Rehfus, David Drennen, Harald Klode
  • Patent number: 9599177
    Abstract: Rotational motion of a shaft member rotationally driven by a motor is converted by a screw member into translational motion of a pressing member. An outer periphery of a cap member is brought into slide contact with a first cylindrical part of the pressing member so that the cap member is relatively movable in an axial direction of the pressing member and is relatively unrotatable about its axis. An inner periphery of the cap member is brought into slide contact with a second cylindrical part of the shaft member so that the cap member is relatively movable in an axial direction of the shaft member and is relatively rotatable about its axis. The first cylindrical part, the second cylindrical part, and the cap member partition a storage chamber connected to one end of the screw member, and a lubricant for lubricating the screw member is filled inside the storage chamber.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: March 21, 2017
    Assignee: ADVICS CO., LTD.
    Inventors: Yoshiyuki Yasui, Shinichiro Yukoku, Naomi Emura
  • Patent number: 9340190
    Abstract: An arrangement contains a brake piston for operating at least one disk brake pad and a nut-and-screw unit for producing an axial thrust, from the rear to the front, of the piston containing a nut arranged in the piston's interior, and secured thereto to prevent rotation, and mounted therein to slide axially, whose front axial end face interacts with an internal section facing the piston's front wall to push the piston axially towards the front when the screw is rotatably driven in the unscrewing direction, and the screw containing a front section screwed into the nut, an intermediate radial flange and a rear section, wherein the piston screw contain centering elements that interact with one another when the screw is in a predetermined front axial mounting position in relation to the piston in order to center the rear section of the screw radially in relation to the piston.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: May 17, 2016
    Assignee: CHASSIS BRAKES INTERNATIONAL B.V.
    Inventors: Nan Qian, Philippe Bourlon
  • Patent number: 9297430
    Abstract: A park brake system for an electric motor actuator is provided. The system may comprise a wrap spring that may rotatably engage the shaft. In this regard, the system may be configured to exert a radial force on a shaft of the electric motor actuator to lock the actuator. Moreover, in various embodiments, the system may be bi-stable.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: March 29, 2016
    Assignee: GOODRICH CORPORATION
    Inventors: David Drennen, Harald Klode, Kevin Rehfus
  • Patent number: 9194448
    Abstract: A disc brake for a commercial vehicle includes a brake caliper which extends over a brake disc, a brake application device which is arranged in the brake caliper for pressing brake pads against the brake disc, and at least one adjustment spindle which is rotatably mounted in a bridge via a threaded coupling. A wear adjusting device is positioned in the brake caliper by which a wear-induced change of the clearance between the brake pad and the brake disc can be substantially compensated for via an axial movement of the adjusting spindle. The disc brake is designed such that the adjusting spindle has at least one axial groove on an outer side, the length of the groove being limited in the direction of the brake application device. A stop, which is axially fixed relative to the bridge, engages into the axial groove in a relatively displaceable manner.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: November 24, 2015
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Markus Gruber, Ralf Weber, Matthias Klingner
  • Patent number: 9150049
    Abstract: An axle assembly having two hubs, each for connection to a wheel, a housing for differential gears and a mounting arrangement for a braking system for braking a connected wheel. The housing has a depression formed therein. The depression is configured so as to accommodate: (a) when the mounting arrangement has a drum brake mounted thereon, movement of a slack adjuster of the drum brake in a direction away from one of the hubs nearest the drum brake so as to allow detachment of the slack adjuster; and/or (b) when the mounting arrangement has a disc brake mounted thereon, an air chamber of the braking system, wherein the air chamber is capable of being partially accommodated within the depression.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: October 6, 2015
    Assignee: Meritor Technology, LLC
    Inventors: Fabrizio Albergante, Davide Colombo, Dhanapal Vittala Raya, Marco Bassi
  • Patent number: 9051982
    Abstract: Disclosed herein is a electric caliper brake with a parking function. The electric caliper brake includes a caliper submodule to apply pressure to a piston to press the disc by converting rotational motion into rectilinear motion through the received rotation power, an actuator submodule to produce braking force to perform the braking function and parking function, and a self-locking module to transfer the braking force by connecting the caliper submodule to the actuator submodule.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: June 9, 2015
    Assignee: MANDO CORPORATION
    Inventors: Joong Gwun Park, Jae Jin Hur, Yo Han Kim
  • Patent number: 8997946
    Abstract: An electro-mechanical brake assembly comprising a brake disk stack having a center axis; and a plurality electro-mechanical actuators for applying braking pressure to the brake disk stack. The actuators are circumferentially arranged around the center axis, and each actuator includes a housing, a linearly movable ram, a screw for linearly moving the ram, a nut mounted for rotation in the housing and operatively engaged with the screw such that rotation of the nut effects linear movement of the screw for urging the ram into forceful engagement with the brake disk stack, an electric motor for rotating the nut, and an anti-rotation device for preventing rotation of the screw relative to the housing when the nut is rotated to effect linear movement of the screw. The foregoing arrangement provides for greater stroke than prior art actuators without sacrificing durability and performance.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: April 7, 2015
    Assignee: Goodrich Corporation
    Inventors: Thomas H. Haydon, Michael J. Ortman, Steve Anderson, Eric Schwaigert
  • Patent number: 8978834
    Abstract: A method of determining a status of a brake actuator of a brake assembly includes sensing one or more activations of the brake actuator, storing the one or more activations in a computer memory, sensing a depth of a parameter of the one or more activations, storing the depth of the parameter of the one or more activations in the computer memory, and determining a status of the brake actuator based on the depth of the parameter of the one or more activations.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: March 17, 2015
    Assignee: Goodrich Corporation
    Inventor: Eric Daniel Cahill
  • Patent number: 8978837
    Abstract: The invention relates to a disc brake for a motor vehicle having a housing, a piston which is movable in the housing along a longitudinal axis and a nut-spindle arrangement which acts on the piston or can be brought into engagement with this, wherein the nut-spindle arrangement is arranged in the housing and is workingly supported via a bearing arrangement on a support surface of the housing. In order to increase the service life of the bearing arrangement, the support surface is formed by a defined contact surface which projects with respect to an adjacent housing region and against which the bearing arrangement bears.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: March 17, 2015
    Assignee: Lucas Automotive GmbH
    Inventors: Ralf Erben, Michael Herberts
  • Patent number: 8973718
    Abstract: A caliper parking brake including: caliper housing having one end on which a cylinder is formed and the other end on which a fork is formed to face the cylinder; brake force input terminal rotatably mounted on an end of the cylinder by a parking cable; brake force switching terminal installed within the cylinder on a common axis so as to rotate together with the brake force input terminal; brake force output terminal directly connected to the brake force switching terminal on a common axis; and a brake terminal that is disposed between the fork and the brake force output terminal and stops rotation of a brake disc using the brake force output by the brake force output terminal, wherein the brake force output terminal compensates for abrasion that occurs in the fork and a frictional pad of the piston by moving an initial position of the piston forward.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: March 10, 2015
    Assignee: Mando Corporation
    Inventors: Young Hun Kong, Seon Ki Hong
  • Patent number: 8955650
    Abstract: A brake actuator has a motor that provides input rotation in first and second directions. A reducer couples to the motor and reduces the input rotation into an output rotation to be applied to a brake screw of a progressive cavity pump drive. A sensor measures rotational speed of the drive shaft. In manual operation, an operator can view an indication of the rotational speed and can manually operate the motor accordingly to control rotation of the shaft. In automated operation, a controller automatically controls the motor based on the rotational speed measured by the sensor. The controller can also use a torque sensor to detect the torque applied to the brake screw, a displacement sensor to detect displacement of the brake screw, and/or a current sensor to detect the current consumption of the motor.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: February 17, 2015
    Assignee: Weatherford Industria E Comercio Ltda
    Inventors: Jorge Robles Villa, Eduardo Perdomini Lara
  • Patent number: 8931599
    Abstract: An electric braking apparatus is provided and includes an electromechanical actuator (EMA) configured to apply an axial load on a brake stack and a damping end-stop. The damping end-stop is configured to transmit torque into the EMA and includes an end cap, a screw disposed such that a longitudinal axis about which the screw is rotatable extends through the end cap, a nut threadably engaged with the screw and movable with the end cap relative to the screw with screw rotation and a spring element anchored on the end cap to resist the screw rotation beyond a predefined position.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: January 13, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: David Drennen, Harald Klode, Robert French, Kevin Rehfus
  • Patent number: 8919504
    Abstract: An aircraft brake system electromechanical actuator is provided. The actuator is configured with features that allow the electric motor to be a line replaceable unit. One such feature is a foreign-object-damage shield that inhibits dust, debris, and/or other particulate contaminants from entering the electromechanical actuator during electric motor removal and replacement.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: December 30, 2014
    Assignee: Honeywell International Inc.
    Inventors: Casey Hanlon, Kellan Geck, James Neil Quitmeyer, Allan Blunt
  • Patent number: 8915336
    Abstract: 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: Grant
    Filed: July 1, 2009
    Date of Patent: December 23, 2014
    Assignee: WABCO GmbH
    Inventors: Peter Beier, Gerhard Bruns, Olaf Jantz, Hartmut Rosendahl
  • Patent number: 8899384
    Abstract: An electronic brake device for use with a wheel of a bicycle provides, among other features, wireless, remote disengagement of a wheel brake. A brake coupled to a housing is movable between an engaged position and a disengaged position. The housing includes a receiver configured to receive a command signal, and a processor operative to identify the received command signal. If the command signal is identified as a first command signal, the processor outputs a first control signal. An electric motor is operatively coupled to the brake to selectively move the brake from the engaged position in which the wheel of the bicycle is being braked to the disengaged position in which the wheel of the bicycle is free of any brake contact in response to the first control signal. Measured movement of the brakes between fully braked or fully disengaged positions are possible in the disclosed arrangement.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: December 2, 2014
    Assignee: Turtle Brake, Inc.
    Inventors: Ursi Castro, Christopher Miller, Paul Dowd
  • Patent number: 8875851
    Abstract: 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: Grant
    Filed: March 17, 2010
    Date of Patent: November 4, 2014
    Assignee: Continental Teves AG & Co. oHG
    Inventor: Thomas Winkler
  • Patent number: 8851242
    Abstract: An electromechanical brake includes a pair of pad plates provided with a friction pad to apply pressure to a disc, a carrier to support the pad plates, a caliper housing supported movably back and forth on the carrier to apply pressure to the pad plates; and a presser to apply pressure to the pad plates. The presser includes a pressing member to apply pressure to one of the pad plates, a driving motor to operate the pressing member, a gear assembly disposed between the driving motor and the pressing member to transfer rotational force of the driving motor to the pressing member. The gear assembly includes an input shaft connected to a motor, an external gear coupled to the input shaft such that the external gear eccentrically rotates, and a stationary internal gear and a rotational internal gear meshed with the external gear such that the external gear revolves, while rotating. The rotational internal gear includes an output shaft in the center thereof and the output shaft is connected to the pressing member.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: October 7, 2014
    Assignee: Mando Corporation
    Inventor: Jin Seok Kim
  • Patent number: 8827052
    Abstract: Disclosed herein are a decelerator in which a first deceleration unit of a planet gear type is provided inside a second deceleration unit of a cycloid type so as to apply eccentric rotation force to the second deceleration unit, and a motor brake with the same. The decelerator restricts an increase in the axial thickness of a motor and achieves an effectively increased deceleration ratio, and the motor brake equipped with the decelerator restricts an increase of the overall length thereof due to the decelerator, achieving enhanced space utility.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: September 9, 2014
    Assignee: Mando Corporation
    Inventors: Sung Wook Yu, Chang Bok Ko
  • Patent number: 8807295
    Abstract: A brake caliper of a disk brake, includes a housing having a bore hole, in which an axially displaceable piston is arranged, and a shaft for actuation, which is supported so that it is rotatable and axially displaceable in the housing, and an adjusting device having a spindle to compensate for brake lining wear, an axial bearing being provided between the spindle and the shaft. For an improved wear resistance, it is proposed according to the invention that the axial bearing be integrally formed from a homogeneous material matrix.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: August 19, 2014
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Sebastian Salzmann, Götz Mehner, Ralph Petri, Christoph Kalff
  • Patent number: 8776958
    Abstract: A brake apparatus for restraining rotation of a wheel of a vehicle by application of a brake that is to be activated for causing a friction member, to be pressed against a brake rotor, through a piston that is movable in an axial direction of the piston. The brake apparatus includes: (a) a power drive device; (b) a driven member that is to be moved, by the power drive device, relative to the piston in the axial direction; and (c) an engaging portion that is provided in one of the driven member and the piston, such that the piston is held in engagement with the driven member through the engaging portion. The engaging portion is disposed such that, during release of the application of the brake, the piston is movable rearwardly while being held in engagement with the driven member through the engaging portion.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: July 15, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Takahiro Shiraki
  • Patent number: 8770353
    Abstract: A ball-and-ramp mechanism of a thrust generator includes a rotary ramp member and a rectilinear ramp member, each having a plurality of sloped grooves sloped along a circumferential direction and having an arcuate diametrical cross-section, and a spherical member interposed between the sloped grooves of the ramp members to transmit force from the rotary ramp member to the rectilinear ramp member. Each of the sloped grooves has regions varying in the curvature radius of the diametrical cross-section in a track area where the spherical member contacts the sloped groove. Accordingly, it is possible to improve the durability of the rotary ramp member and the rectilinear ramp member.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: July 8, 2014
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Takuya Usui, Takayasu Sakashita, Atsushi Odaira
  • Publication number: 20140188361
    Abstract: A motor driven brake system including a parking brake, in particular, a motor driven parking brake system in which a parking brake is implemented using a compact motor and a plurality of disks and friction pads mutually fractionized or released by the compact motor, so that it is possible to reduce operating noise of a solenoid as compared with that of an existing solenoid and to prevent a phenomenon that although a power failure of the compact motor occurs during driving, the braking power of the motor driven brake system is not released.
    Type: Application
    Filed: August 15, 2013
    Publication date: July 3, 2014
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Dong Yoon Hyun, Jong Yoon Jeong, In Su Kim
  • Patent number: 8763767
    Abstract: In a method for controlling an electronic parking brake system and an electronic parking brake system, a travel-optimized method is used to achieve the released state of the parking brake system. When the parking brake is applied, travel-force values are detected and a plausibility check is run, the values being used to arrive at a first optimized position when the brake is released. If the residual force applied to the brake exceeds a threshold value, the parking brake is released even more until the value remains just under the threshold value or until a maximum defined release travel is achieved.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: July 1, 2014
    Assignee: Continental Automotive GmbH
    Inventors: Stefan Goss, Alexander Kalbeck, Armin Sauer
  • Patent number: 8752909
    Abstract: A brake mechanism is constituted to have: an electromotive actuator which suppresses a rotation of a disk by moving a first pad toward a second pad to sandwich and press the disk between the first pad and the second pad; a pressing force setting section outputting a set signal to set a pressing force of the pad to the disk; a plurality of piezoelectric elements provided at different places from each other in the first pad or the second pad, the plurality of piezoelectric elements detecting a stress of the pad; a signal processing part which processes electric signals obtained from the plurality of piezoelectric elements and generates a detection signal of a pressing force, the detection signal corresponding to a pressing force of the pad to the disk; and a computing part which obtains a deviation between the set signal and the detection signal, computes an operation signal of the electromotive actuator based on the deviation, and then outputs the operation signal.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: June 17, 2014
    Assignee: Nihon Dempa Kogyo Co., Ltd.
    Inventor: Mitsuaki Koyama
  • Patent number: 8752678
    Abstract: A disc brake is arrangeable in a space that accommodates a brake caliper having an application device. The brake caliper is held slidably with guiding elements on a brake carrier, which is fastened with screws to an axle connection at the vehicle. The caliper straddles a brake disc, against which brake pads can be pressed on either side while braking. At least the brake pad on the application side is mounted movably in the direction of the brake disc in a pad shaft of the brake carrier. A device for the visual identification of the wear of a brake pad and/or brake disc is constructed so that for identifying wear, a pointer element, extending in the opposite direction to the brake disc, is connected at least at one screw.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: June 17, 2014
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Markus Gruber, Thomas Reno
  • Publication number: 20140158480
    Abstract: An arrangement contains a brake piston for operating at least one disk brake pad and a nut-and-screw unit for producing an axial thrust, from the rear to the front, of the piston containing a nut arranged in the piston's interior, and secured thereto to prevent rotation, and mounted therein to slide axially, whose front axial end face interacts with an internal section facing the piston's front wall to push the piston axially towards the front when the screw is rotatably driven in the unscrewing direction, and the screw containing a front section screwed into the nut, an intermediate radial flange and a rear section, wherein the piston screw contain centering elements that interact with one another when the screw is in a predetermined front axial mounting position in relation to the piston in order to center the rear section of the screw radially in relation to the piston.
    Type: Application
    Filed: December 11, 2013
    Publication date: June 12, 2014
    Applicant: CHASSIS BRAKES INTERNATIONAL B.V.
    Inventors: Nan QIAN, Philippe BOURLON
  • Patent number: 8739943
    Abstract: A stationary shaft supports a fluid-tight rotatable drum which receives an elongated flexible restraining member. The shaft has a threaded portion which receives an actuating nut connected to rotate with the drum through a detent mechanism. Spaced compression springs extend axially between the nut and a stack of interfitting annular brake disks and brake plates, with the disks splined to the shaft and the plates rotatable with the drum. The stack is immersed in an oil-shear cooling fluid that contacts the drum, and the nut and springs are effective to compress the stack with increasing force in response to rotation of the drum for progressively increasing the resistance torque on the drum as the restraining member is pulled from the drum. The detent mechanism limits the compression force on the stack and the tension force on the restraining member while the drum continues to rotate.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: June 3, 2014
    Assignee: Force Control Industries, Inc.
    Inventors: Brian C. Hopson, Roy A. Stoner
  • Patent number: 8733512
    Abstract: Disclosed is an electric disc brake capable of reducing noise and vibration while expanding the life span of the product. The electric disc brake includes a caliper housing to press friction pads provided at both sides of a disc against the disc, a cylinder installed in the caliper housing, a piston moving back and forth in the cylinder to press the friction pads, a driving device generating driving force with respect to the piston, and a volume compensation part communicated with the cylinder to compensate for an increment of a volume of the cylinder according to movement of the piston.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: May 27, 2014
    Assignee: Mando Corporation
    Inventor: Jin Seok Kim
  • Patent number: 8733513
    Abstract: Provided is a disk brake in which a rotation control part for controlling relative rotation of a cartridge and a cylinder of a parking brake mechanism is formed at the cartridge and includes convex parts having curved surfaces and concave parts formed at the cylinder and having curved surfaces, and a spacer formed of stainless steel, resiliently fitted into an inner circumference of the cylinder and including arc part having the same shape as the concave parts is disposed between the convex parts and the concave parts.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: May 27, 2014
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Katsuhiro Takahashi, Shigoru Hayashi, Yorihito Miura
  • Patent number: 8708110
    Abstract: The invention relates to a brake device for braking a moving brake body (2) by means of pressing a brake element (3, 4) onto the brake body (2), wherein a conversion device (7) is provided for converting a rotational movement of a brake drive shaft (9) into a translational movement of the brake element (4) in the direction of the brake body (2), wherein a rotary percussion mechanism (8) is connected between the brake drive shaft (9) and the conversion device (7).
    Type: Grant
    Filed: July 17, 2006
    Date of Patent: April 29, 2014
    Assignee: S.B. Patent Holdings ApS
    Inventor: Erik Skjaerbaek
  • Patent number: 8684147
    Abstract: A combined vehicle brake which has a hydraulically actuable service brake and an electromechanically actuable parking brake device, a hydraulic service pressure space being delimited in a brake housing by a brake piston which can be acted upon by hydraulic pressure medium in order to execute service braking operations, so that the brake piston can be actuated along a piston longitudinal axis in order to achieve a braking action, and the parking brake device acting on the brake piston by a gear, in that the gear converts the rotational movement of an electromechanical actuator into a translational movement and causes an actuation of the brake piston in order to execute parking braking operations and holds the said brake piston in the actuated position, the gear having a threaded spindle and a threaded nut which are in contact with one another via a plurality of rolling bodies.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: April 1, 2014
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Thomas Winkler, Anja Klimt, Thomas Hess, Willi Zeig, Marcus Schumann
  • Patent number: 8671789
    Abstract: A ball screw which has a threaded nut arranged on a threaded spindle, a helical ball channel in which balls are arranged delimited by ball grooves of the threaded spindle and the threaded nut, a ball cage which receives the balls and a spring element which bears with one end against the threaded nut and with another end against the ball cage. The spring element is arranged axially adjacent to the ball cage in an annular gap delimited by the threaded nut and the threaded spindle.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: March 18, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Juergen Osterlaenger, Stefanie Baerthlein
  • Patent number: 8657079
    Abstract: The invention relates to an electric parking brake, comprising a motor-gearing unit (2) with a drive output shaft (3), wherein the motor-gearing unit (2) generates a rotation of the drive output shaft (3), and comprising a spindle device (4) having a spindle (5) and a nut (6), wherein the spindle device (4) converts the rotation of the drive output shaft (3) into an axial movement of the nut (6) in the axial direction (X-X), wherein the spindle (5) is connected in a positively locking manner to the drive output shaft (3), the spindle (5) is centered on the drive output shaft (3), and the spindle is mounted in a brake caliper (7).
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: February 25, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Hans-Peter Schemel, Helmut Meier, Hartmut Ochs
  • Publication number: 20140000993
    Abstract: Disclosed herein is an electromechanical brake system includes a base carrier provided with a pair of pad plates for application of pressure to a disc, a caliper housing supported by the base carrier to be movable forward and backward to apply pressure to the pad plates, a pressing member including a ball nut installed at the caliper housing to convert rotational motion into rectilinear motion to apply pressure to the pad plates and a ball screw coupled to the ball nut, a force sensor installed at the ball nut to sense load produced by the ball nut, a motor to produce rotational force to operate the pressing member, and a speed reducer connected to a rotating shaft of the motor to transfer driving force to the pressing member, wherein the speed reducer may be adapted to change a reduction ratio depending on presence of load sensed by the force sensor.
    Type: Application
    Filed: June 18, 2013
    Publication date: January 2, 2014
    Inventor: Su Hwan No
  • Patent number: 8616348
    Abstract: A combined vehicle brake including a hydraulically actuated service brake and an electromechanically actuated parking brake device, a hydraulic operating pressure chamber in a brake housing being defined by a brake piston, which for performing service braking actions can be acted upon by hydraulic pressure fluid, so that the brake piston can be actuated along a piston longitudinal axis in order to produce a braking action, and the parking brake device acting on the brake piston by way of a transmission that translates the rotary motion of an electromechanical actuator into a translational motion and actuates the brake piston to perform parking brake actions and to keep it in the actuated position. Also disclosed is a transmission for translating a rotary motion into a translational motion by way of a screw spindle and a spindle nut, which are in contact with one another by way of multiple rolling elements.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: December 31, 2013
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Thomas Winkler, Jürgen Balz, Dirk Koch, Marcus Schumann, Anja Klimt, Jürgen Bauer, Torsten Hintz
  • Patent number: 8607939
    Abstract: A braking device, in particular for a motor vehicle, which has a brake disk, a brake caliper fitting around the brake disk, and two brake pads, which rest against the brake disk for the purpose of braking. One of the brake pads can be moved by a motor-driven ball screw which has a threaded spindle and a threaded nut. The ball screw is accommodated within the brake caliper. The threaded nut is connected to a piston which has the brake pad and which is seated on the threaded nut in such a way that it can be tilted relative to the threaded nut, and/or wherein the threaded spindle is mounted on the brake caliper in such a way that it can be tilted relative to the brake caliper.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: December 17, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Jurgen Osterlanger, Stefanie Barthlein
  • Patent number: 8596426
    Abstract: 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: Grant
    Filed: February 17, 2009
    Date of Patent: December 3, 2013
    Assignee: NTN Corporation
    Inventors: Tatsuya Yamasaki, Masaaki Eguchi, Katsuhisa Yamaguchi, Tomoaki Makino
  • Patent number: 8579090
    Abstract: In an electric linear motion actuator for transmitting torque of a rotary shaft (4) to planetary rollers (7) and thus to a linearly driven output member constituted by an outer race member (5), axial movement of a carrier (6) supporting the planetary rollers (7) is restricted, and the outer race member (5) is axially slidably fitted in a radially inner surface of a cylindrical portion (1a) of a housing (1) and is rotationally fixedly coupled to an object to be driven via keys (25) The planetary rollers (7) have their radially inner surfaces rotatably supported on respective support pins (6c) of the carrier (6), and are radially inwardly biased by radial compression ring springs (21) wound around the support pins (6c) so as to envelop the support pins. The planetary rollers (7) are thus pressed against the radially outer surface of the rotary shaft (4).
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: November 12, 2013
    Assignee: NTN Corporation
    Inventor: Tatsuya Yamasaki
  • Patent number: 8577531
    Abstract: A system and method for the automatic control of wheel brake-slip in a motor vehicle with an electric drive (2), including the following steps: detecting a brake signal (14) by means of a slip control device (9), at which point the slip control device (9) generates an electric drive signal (15) and a friction brake signal (16) for the automatic control of a predetermined slip value of a wheel (1) of the motor vehicle, transmitting the electric drive signal (15) to an electric drive control device (6) and transmitting the friction brake signal (16) to a friction brake control device (12), at which point a friction brake control device (12) activates a friction brake (10) of the wheel (1) according to the friction brake control signal (16) to generate friction brake signal (16) to generate friction brake torque and an electric drive control device (6) activates electric drive (2) according to electric drive signal (15) to generate electric drive torque.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: November 5, 2013
    Assignee: Continental Teves AG & Co. OHG
    Inventors: Ákos Semsey, Michael Döricht