Having Means To Prevent Vibration Of Brake Element Patents (Class 188/73.37)
  • Patent number: 10739258
    Abstract: In order to obtain information about a salt-state of a road independently of drivers, a method that generates information about the salt-state of a road is specified that includes a determination of salt-state-dependent measurement values, processing of the measurement values into information about the salt-state of the road and outputting of the information about the salt-state of the road. A corresponding device that generates information about the salt-state of a road comprises sensors that determine of salt-state-dependent measurement values, a processing unit that is configured to process determined measurement values into information about the salt-state of the road, and output the information about the salt-state of the road.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: August 11, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Frederic Stefan, Uwe Gussen, Christoph Arndt, Frank Petri
  • Patent number: 10487894
    Abstract: A bicycle disc brake pad has a support frame, a friction-wearing material element and a vibration damping element associated with the support frame.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: November 26, 2019
    Assignee: Campagnolo S.r.l.
    Inventors: Mario Meggiolan, Filippo Bove
  • Patent number: 10415660
    Abstract: A disc brake assembly includes a brake clip having a U-shaped section, at least one retention tang, and an abutment leg. The U-shaped section has a base leg and opposing upper and lower legs extending from the base leg. The upper leg has an inner face facing the lower leg. The at least one tang extends away from the U-shaped section and inner face. The abutment leg extends from the lower leg and has a midpoint between a top edge and a bottom edge. The midpoint is not planar with the top and bottom edges.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: September 17, 2019
    Assignees: Kelsey-Hayes Company, Lucas Automotive GmbH
    Inventors: Manuel Barbosa, Kraig E. Gerber, Anthony Dixon, Frank Madzgalla, Juergen Korte, Tobias Lenarz, Raphael Mueller, Philip Kexel
  • Patent number: 10344817
    Abstract: A vehicle brake pad includes a back plate layer, an underlayer, an adhesive layer that mediates between the back plate layer and the underlayer, and a friction material layer, wherein the vehicle brake pad does not include a shim and wherein at least one of the back plate layer, the adhesive layer, and the underlayer has a loss factor of 0.2 or higher, calculated according to the following Equation 1, at temperatures from ?100 to 300° to damp noise of a frequency range of 200 to 20,000 Hz at temperatures from ?100 to 300°: (Equation 1) Loss factor ?=(f2?f1)/f0, where ? is a loss factor, f0 is a noise frequency, f1 is a minimum value of amplitude of a noise frequency when a noise level is reduced by 3 dB, and f2 a maximum value of amplitude when the noise level is reduced by 3 dB.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: July 9, 2019
    Assignee: Hyundai Motor Company
    Inventors: Jae Young Lee, Yoon Joo Rhee, Byung Chan Lee, Jai Min Han, Yoon Cheol Kim
  • Patent number: 10233990
    Abstract: A coating, in particular a coating for a back side of a brake pad opposite a braking side, includes a pair of bonding layers and a composite layer. Each of the bonding layers includes an epoxy material. The composite layer is disposed between the pair of bonding layers, and includes a mixture of a rubber material and particles of a secondary material. A method for forming the coating includes coating a layer of epoxy onto the surface to be coated to form a first bonding layer, coating the mixture of the rubber material and particles of a secondary material onto the first bonding layer to form a composite layer, coating a layer of epoxy to the composite layer to form a second bonding layer, and then curing the coating via a curing process.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: March 19, 2019
    Assignees: Robert Bosch LLC, Robert Bosch GmbH
    Inventors: Hamidreza Mohseni, Garrett Vincent-Casner, Ashley Simmons, David Garrett, Mark A. Phipps
  • Patent number: 10100887
    Abstract: A brake pad of a disk brake, includes at least one friction pad attached to a pad carrier and has a locking device, which is arranged on the pad carrier and which has a spring element and a securing element. The spring element and the securing element of the locking device are coupled to each other in a form-closed manner as two separate parts and can be pivoted in relation to each other. A disk brake is equipped with such brake pads.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: October 16, 2018
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Jutta Graaf, Josef Schropp, Manfred Schoenauer
  • Patent number: 10071755
    Abstract: The disclosed embodiments relate to a housing device for a magnet body for an electromagnetic rail brake for a rail vehicle. The housing device has a first cable feed-through opening for the feeding through of a first electrical connection cable into the magnet body. The housing device is characterized in that a first axial-extent axis of the first cable feed-through opening is arranged at an acute inclination angle to a main surface of the housing device adjacent to the first cable feed-through opening, wherein the first cable feed-through opening is arranged in the center of the rail brake within a tolerance range.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: September 11, 2018
    Assignee: KNORR-BREMSE GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Marcin Widlinski, Richard Rathammer, Volker Joergl
  • Patent number: 9321605
    Abstract: An apparatus and method for reducing brake squeal in a web tension brake. The apparatus comprising an anti-squeal friction pad assembly having a friction pad mounted on a back plate and a rubber isolation layer sandwiched between the back plate and a second back plate. The rubber isolation layer to dampen vibrations and break up the symmetry of the brake assembly minimizing acoustic resonances that cause the objectionable squeal.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: April 26, 2016
    Assignee: DOVER FLEXO ELETRONICS, INC.
    Inventor: Kenneth Ekola
  • Patent number: 9284999
    Abstract: A disc brake assembly having a guide pin disposed in a bore of an anchor bracket such that a guide pin axis is offset relative to a bore axis whereby there is provided at least one defined point of contact between only a portion of the guide pin and a portion of an inner surface of the bore. The guide pin includes at least one slot having a member, which is formed separate from the guide pin, and disposed therein to bias the guide pin in the bore thereby offsetting the guide pin axis relative to the bore axis. The member includes a first member formed from an elastomeric material and a second member formed from a metal material, wherein the second member is configured to retain the member in the slot.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 15, 2016
    Assignees: Kelsey-Hayes Company, Lucas Automotive GmbH
    Inventors: Kraig Gerber, Guido Zenzen
  • Patent number: 9206865
    Abstract: A brake lining for a partially lined disc brake, in particular of a rail vehicle, with lining elements which are connected on a lining carrier and of which each has a carrier plate and friction elements which are fastened to the carrier plate and lie on the rear side in receptacles, wherein the carrier plate is held on the lining carrier such that the carrier plate can be moved in a tilting manner, is configured in such a way that at least one depression which increases the surface area of the carrier plate is provided in the carrier plate, adjacent to the receptacles.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: December 8, 2015
    Assignee: KNORR-BREMSE SYSTEME FUR SCHIENENFAHRZEUGE GMBH
    Inventors: Christoph Sigl, Matthias Niessner
  • Patent number: 9027716
    Abstract: A pressing part is provided at a disk-circumferentially central portion of a base plate member of a shim plate. The pressing part presses a friction pad at the center in the disk circumferential direction of the friction pad when a piston starts to press the friction pad. The pressing part is formed by slitting and raising the disk-circumferentially central portion of the shim plate along the disk radial direction. When the pressing force of the piston is in a low pressure range, the pressing force is transmitted to the friction pad through the pressing part. After the pressing force of the piston has exceeded the low pressure range, the pressing force is transmitted to the friction pad through the whole region in the disk circumferential direction of the piston.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: May 12, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Seiko Tanabe, Yoichi Kumemura, Hayuru Inoue, Hitoshi Yoshida
  • Patent number: 8985283
    Abstract: A vehicle brake apparatus capable of preventing abnormal vibration due to thickness variations in a disc rotor includes a motor drive unit configured to control the motor which presses the brake pad against the disc rotor, a brake pressure detection unit for detecting a braking pressure for pressing the brake pad, and a wheel speed sensor for detecting a rotation speed of the disc rotor. If an amount of variation in the detection values detected by the brake pressure detection unit during one rotation of the disc rotor exceeds a variation amount determination threshold value and a detection value variation frequency has a correlation with the rotation speed of the disc rotor and the detection value variation frequency exceeds a variation frequency determination threshold value, the motor drive unit controls the motor in inverted phase to the variation in the detection values.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: March 24, 2015
    Assignees: Advics Co., Ltd., Toyoto Jidosha Kabushiki Kaisha
    Inventors: Yusuke Oshio, Takahisa Yokoyama, Akira Sakai, Naoki Yabusaki, Shinsuke Yamamoto
  • Publication number: 20140374198
    Abstract: A disc brake device is characterized by including a disc rotor that rotates around a rotational axis, a friction pad that opposes a friction surface of the disc rotor, a first member provided on a fixed portion on a vehicle body side, a second member that is slidably supported via a slide mechanism with respect to the first member, and a third member that holds the friction pad, and is pivotally supported, with a pivot axis along a radial direction of the disc rotor as a pivot center, via a pivot mechanism with respect to the second member.
    Type: Application
    Filed: December 2, 2011
    Publication date: December 25, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazutoshi Nishii, Mikio Gomi, Junichi Tanoue
  • Patent number: 8887876
    Abstract: A shim for a disc brake pad is provided. The shim is formed of a generally planar metal sheet that has a plurality of curved or bent edge tabs extending out from its edges thereof to engage the brake pad. A centrally disposed raised area is provided on the shim. The raised area serves as a compartment for lubricant when the shim is retained on the brake pad. The raised area has at least one lubricant access port to allow lubricant to be introduced into the compartment without removing the shim from the brake pad. A disc brake pad assembly having the shim is also provided. A method of lubricating the assembly via the access port is also provided.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: November 18, 2014
    Inventor: Ray Arbesman
  • Patent number: 8863915
    Abstract: Cushions for disc brake pads are disposed between the brake pads and their caliper pistons or caliper fingers. The cushions possess such characteristics of resilience that, during braking action, brake pads follow irregularities and ride over high spots on rotor faces. This action significantly reduces uneven frictional drag, which lowers braking temperature increasing braking efficiency and brake system longevity. Each cushion comprises a resilient body which is further comprised of either a material, such as an elastomeric pad, or a structure such as a compressible spring or other apparatus.
    Type: Grant
    Filed: August 25, 2007
    Date of Patent: October 21, 2014
    Inventor: Philip Herbert Adams
  • Patent number: 8844684
    Abstract: A disc brake provided with a guide spring capable of preventing a vibration of a pad plate having a friction pad mounted thereon, and capable of separating the friction pad from a disc in a rapid manner after a braking operation is finished, the disc brake including a disc rotating together with a wheel of a vehicle, two pad plates disposed at both lateral sides of the disc, respectively, to perform a braking by pressing both lateral side surfaces of the disc and each having a friction pad, a caliper housing and a piston that are configured to press the pad plate, and a guide spring enabling the pad plates to operate as an integral body and absorb shock.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: September 30, 2014
    Assignee: Mando Corporation
    Inventor: Byung Guk Suh
  • Patent number: 8839917
    Abstract: An object is to stably exhibit a two-stage spring characteristic of a plate spring for restraining the generation of a clonk noise in a disc brake apparatus for use in a vehicle. A plate spring 90 for restraining the generation of a clonk noise has a fixture portion 91 having a shape resembling the squarish letter U and elastically fixed to a back plate 61, and an extension portion 92 extending continuously from the fixture portion 91. The extension portion 92 includes an engagement subportion 92a engaged with a support member at all times; a curved subportion 92b located between the engagement subportion 92a and the fixture portion 91; and a contact-engagement subportion 92c located between the curved subportion 92b and the fixture portion 91.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: September 23, 2014
    Assignee: Advics Co., Ltd.
    Inventors: Takahiro Ito, Takao Iida
  • Patent number: 8794397
    Abstract: A pad (20) for disc brakes comprises a plate (22) acting as the support for a friction material layer (24). The plate (22) extends past the friction material layer (24) at least at a radially outer portion (E) of the pad. At least one load (30a, 30b) is applied to the plate (22) and fixed thereto by means of clinching. This load changes the mass of at least one portion of the plate such as to obtain an inertia of the pad which substantially avoids the vibrations of the pad during the braking action which are suitable to cause noisiness of the disc brake. The load (30a, 30b) comprises at least one projection (32) suitable to be clinched to fix the load to the plate. The projection (32) is inserted within a hole (34) of the plate and clinched.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: August 5, 2014
    Assignee: Freni Brembo S.p.A.
    Inventors: Cristian Crippa, Antonio Tupputi
  • Publication number: 20140202799
    Abstract: A disc brake device includes a disc rotor, which rotates around a rotation axis, friction pads opposed to friction surfaces of the disc rotor, a first member provided on a fixed part on a vehicle body side, a second member supported so as to be slidable relative to the first member by a slide mechanism, a third member, which holds the friction pads and is supported so as to be swingable relative to the second member around a swing axis in a radial direction of the disc rotor as a center of swing by a swing mechanism, and a return mechanism provided on the swing mechanism to apply force to the third member to restore the same to an initial position in a swing direction. Therefore, the disc brake device has an effect of inhibiting abnormal noise.
    Type: Application
    Filed: December 2, 2011
    Publication date: July 24, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazutoshi Nishii, Mikio Gomi, Junichi Tanoue
  • Publication number: 20140138192
    Abstract: A noise damping shim for a friction assembly is produced by a pre-slit step and a bend and blank step. The pre-slit step forms pre-slits in a shim material at locations where tabs of a noise damping shim are to be formed. The bend and blank step bends each of the tabs at a bent angle relative to the shim material while simultaneously blanking a shim body from the shim material to produce a noise damping shim having bent tabs extending outwardly from a periphery of the shim body.
    Type: Application
    Filed: January 27, 2014
    Publication date: May 22, 2014
    Applicant: UTIL CANADA LIMITED
    Inventors: M. Reza Latifi, Jerzy Kryspin
  • Patent number: 8714319
    Abstract: A shim plate is provided at the rear side of a friction pad to abut annular contact parts of pistons. The shim plate is provided with first and second one-side cut portions and at a position corresponding to the annular contact part of a disk rotational entrance-side piston, for example, so that the area of contact between the shim plate and the annular contact part is larger at the disk rotational exit side than at the disk rotational entrance side. The first and second one-side cut portions and have four contact ends at which the peripheries of the cut portions and the annular contact part intersect each other. At least two of the four contact ends are provided on the disk rotational entrance side with respect to the diametrical center of the piston.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: May 6, 2014
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Shinji Suzuki, Satoru Tsurumi, Nobuhiro Wakabayashi
  • Publication number: 20140102835
    Abstract: A brake pad assembly provided for a disc brake apparatus. The brake pad assembly comprises a backing plate having a flat inner face and a flat outer face oriented opposite to the inner face, a friction member fixed to the inner face of the backing plate, and an anti-squeal shim attached to the outer face of the backing plate. The anti-squeal shim includes a flat support plate attached to the outer face of the backing plate and a straight flat flange plate. The support plate of the anti-squeal shim has a peripheral edge including opposite outer and inner edges and opposite side edges. The flange plate is in the form of a flexible cantilever formed integrally with the support plate of the anti-squeal shim and extends away from one of the outer, inner and opposite side edges of the support plate of the anti-squeal shim.
    Type: Application
    Filed: August 13, 2013
    Publication date: April 17, 2014
    Applicant: Material Sciences Corporation
    Inventors: Ramana KAPPAGANTU, Eric DENYS
  • Patent number: 8616345
    Abstract: Systems and methods for whirl mitigation in an aircraft braking system are provided. For example, an apparatus is provided comprising a brake disk stack including a torque tube having a first axial end and a second axial end, a back leg near a first axial end of the torque tube, and a circumferentially disposed spline extending from the back leg towards the second axial end of the torque tube.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: December 31, 2013
    Assignee: Goodrich Corporation
    Inventors: Todd Rook, Ravindra Uppar
  • Patent number: 8544617
    Abstract: A railroad and industrial vehicle disk brake pad having a supporting plate and a number of friction members. Each friction member is elongated in shape, with two curved parallel long sides, and is fixed to the supporting plate so that the curves of the long sides form a substantially 0° angle with respective concentric circles of a disk to which the pad fitted. To prevent displacement of the friction members, these are fixed to the supporting plate with the interposition of antirotation means.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: October 1, 2013
    Assignee: Cofren S.r.l.
    Inventor: Vittorio De Soccio
  • Patent number: 8544618
    Abstract: A brake pad for a partially-lined disk brake and a method for making such a brake pad. The brake pad has a back plate, a friction lining arranged fixedly on a front side of the back plate and a damping plate provided on a rear side. At least one hook-shaped guide end adjoins a body region of the back plate in a circumferential direction. The guide end has an elevation with a material thickness D increased in relation to a material thickness d of the body region. At least one abutment face for tangential abutment in a circumferential direction is provided on the guide end and a support face is provided thereon for radial support in a radial direction. The damping plate has at least one bent-over bracket which rests against the radial support face in a bracket region of the back plate. The damping plate is offset axially to the rear relative to the bracket region in the body region of the back plate.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: October 1, 2013
    Assignee: Continental Engineering Services GmbH
    Inventors: Anja Klimt, Matthias Würz, Christian Piehler
  • Patent number: 8540060
    Abstract: There is provided a disk brake comprising: a mounting member axially extending over a disk periphery, the mounting member including a pad guide where a friction pad travels; a caliper; and a return spring between the friction pad and the mounting member and urges the friction pad into a return direction separating from the disk, wherein the return spring includes: a first extended portion where a base end side thereof is fixed to a back plate of the friction pad while a top end side thereof extends separating from the disk; and a second extended portion folded from the top end side of the first extended portion toward the mounting member, a top of the second extended portion extending to elastically abut to the side of the mounting member, and a plate thickness direction of the first extended portion extends to be approximately a radial direction of the disk.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: September 24, 2013
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Shigeru Hayashi, Masatoshi Tazaki
  • Publication number: 20130240306
    Abstract: A brake shim includes a metal substrate having a first surface and a second surface spaced opposite the first surface. The brake shim includes a first film formed from a viscoelastic material and disposed on the first and second surfaces, wherein the first film has a first elastic modulus, a primary surface spaced opposite the first surface, and a secondary surface spaced opposite the primary surface. The brake shim includes a second film formed from a polymer composition including a resin component having at least one epoxide functional group and a curing agent reactive with the resin component and having at least one amine functional group. The second film is disposed on the primary and secondary surfaces and has a second elastic modulus that is from about 10 times to about 1,000 times greater than the first elastic modulus. A method of forming the brake shim is also disclosed.
    Type: Application
    Filed: March 16, 2012
    Publication date: September 19, 2013
    Applicant: MATERIAL SCIENCES CORPORATION
    Inventors: Matt Murphy, Hong Xiao
  • Patent number: 8511440
    Abstract: A rotor is provided for use with a vehicle brake assembly that includes a forcing member operable to urge a friction member into mechanical communication with the rotor to thereby oppose movement of the same. The rotor includes a rotor body with an annular rim portion having first and second opposing contact faces. One or more loose-mass damper systems are interposed between the first and second contact faces, and operable to dissipate kinetic energy directly therefrom. Each of the loose-mass damper systems includes at least one mass operable to repeatedly impact against first and second inner faces respectively opposing the first and second contact faces to reduce oscillation of the rotor. Reducing oscillation of the rotor is independent of temperature and pressure. The loose-mass damper systems are preferably oriented proximate to an outer peripheral edge of the annular rim portion generally circumferentially equidistant from one another.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: August 20, 2013
    Assignee: Material Sciences Corporation
    Inventor: Ramana Kappagantu
  • Patent number: 8474581
    Abstract: A subassembly for use in a brake assembly, the subassembly comprising a shim, a backing plate and a friction pad formed of a friction pad material, wherein the friction pad material extends into at least one pass-through hole in the backing plate; and wherein one or more flanges perimetering at least one opening in the shim are encased in the friction material; whereby the shim is resisted from movement at least in part by the one or more flanges being encased in the friction pad material. A preferred methodology of forming the braking subassembly comprises the steps of forming the friction pad on the backing plate and at least partially filling the at least one pass-through hole with said friction pad material such that the one or more flanges perimetering the at least one opening in the shim is encased in the friction pad material.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: July 2, 2013
    Assignee: Anstro Manufacturing, Inc.
    Inventor: Robert R. Bosco, Jr.
  • Patent number: 8469159
    Abstract: A brake assembly includes a brake pad, a bracket supporting the brake pad and having a first portion, a second portion spaced apart from the first portion, and a linkage interconnecting the first and second portions. The linkage is configured to transfer tensile loads between the first and second portion, but is characterized by the absence of any bending modes. The absence of bending modes prevents excitation of the linkage, thereby reducing sound generated during application of the brake assembly.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: June 25, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Chia N. Yang
  • Publication number: 20130068574
    Abstract: A shim for a disc brake pad is provided. The shim is formed of a generally planar metal sheet that has a plurality of curved or bent edge tabs extending out from its edges thereof to engage the brake pad. A centrally disposed raised area is provided on the shim. The raised area serves as a compartment for lubricant when the shim is retained on the brake pad. The raised area has at least one lubricant access port to allow lubricant to be introduced into the compartment without removing the shim from the brake pad. A disc brake pad assembly having the shim is also provided. A method of lubricating the assembly via the access port is also provided.
    Type: Application
    Filed: September 17, 2012
    Publication date: March 21, 2013
    Inventor: Ray Arbesman
  • Patent number: 8397880
    Abstract: A clip comprising: a body portion; one or more arms connected to the body portion and projecting away from the body portion; a deformable portion of the one or more arms that is distal from the body portion; and a lip on the one or more arms that is proximate to the body portion.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: March 19, 2013
    Assignee: Akebono Brake Corporation
    Inventor: Galus Chelaidite
  • Patent number: 8348025
    Abstract: The present invention is a shim or shim assembly that clips onto a brake caliper piston. It is generally a rimmed round (disc or annular) shape to cap the edges of the caliper piston and includes surface features for lubrication, and improved fitting. Reduced noise from frictional fretting is provided along with protection of piston's outer rim. Reduced thermal transfer into the piston is also provided.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: January 8, 2013
    Inventors: Ray Arbesman, Nghi Pham
  • Patent number: 8342297
    Abstract: The present disclosure relates to a vehicle braking assembly with reduced squeal, having: a brake pad operative to apply a braking force to a brake rotor or drum, the brake pad being subject to vibration during braking; and a damper attached to the pad, configured to force a squeal reducing vibration in the brake pad, the damper including: (i) a first mass; (ii) a second mass connected to the first mass by a first shaft; and (iii) a third mass connected to the first mass by a second shaft.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: January 1, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Jim Chern, Ronald Alan Smith
  • Patent number: 8302745
    Abstract: A backing plate comprises a front side configured to engage a friction material, a rear side opposite the front side, a first edge, a second edge generally opposing the first edge, and at least one channel disposed between the front side and the rear side and extending from the first edge toward the second edge. The rear side is configured to engage a caliper assembly. The backing plate is configured to achieve a resonant frequency that attenuates vibration.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 6, 2012
    Assignee: Honeywell International Inc.
    Inventor: Roy Eastham
  • Patent number: 8235184
    Abstract: A disc brake apparatus that can keep a stable contact state between a torque transmitting part of a brake pad and a torque receiving part of a mounting, so as to reliably suppress a brake noise phenomenon. At the time of forward braking where a main body member of a brake pad is pressed against a disc rotor, the rotational moment acting on the main body member of the brake pad from the disc rotor is absorbed by the main body member rotating relative to a forward braking torque transmitting member about one pin joint, so as to be restrained from being transmitted to the forward braking torque transmitting member. As a result, the respective contact states between two torque transmitting protrusions formed in the forward braking torque transmitting member of the brake pad and torque receiving surfaces formed in a forward braking torque receiving part of a mounting are held stable.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: August 7, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Toru Matsushima
  • Patent number: 8225911
    Abstract: A brake pad assembly is provided that includes a backing plate including a first surface, a second surface opposite to the first surface, and at least one opening. Also included are a friction material associated with the backing plate and a shim plate having a first shim surface and a second shim surface, and a tab projecting from the second shim surface. The shim plate is securely fastened to the backing plate by inserting the tab into the opening such that the friction material, when plastic, embeds the tab inside the opening by flowing through the opening, and subsequently hardens around the tab.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: July 24, 2012
    Assignee: GRI Engineering & Development, LLC
    Inventors: Jiashen Lin, Steve Wang, Abhimanyu Kumar
  • Publication number: 20120175199
    Abstract: The present disclosure relates to a vehicle braking assembly with reduced squeal, having: a brake pad operative to apply a braking force to a brake rotor or drum, the brake pad being subject to vibration during braking; and a damper attached to the pad, configured to force a squeal reducing vibration in the brake pad, the damper including: (i) a first mass; (ii) a second mass connected to the first mass by a first shaft; and (iii) a third mass connected to the first mass by a second shaft.
    Type: Application
    Filed: March 22, 2012
    Publication date: July 12, 2012
    Inventors: Jim Chern, Ronald Alan Smith
  • Patent number: 8215458
    Abstract: A system for retaining a back plate of a disc brake pad is described. The system includes an elongated resilient element for applying a force to the back plate, a base of the resilient element extending along an edge of the back plate, contacting the edge along a majority of its length, legs of the resilient element, extending from the base, generating the force applied to the back plate by the base when deformed by a compression element, and retaining elements for preventing axial displacement of ends of the resilient element, and lateral slipping of the resilient element.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: July 10, 2012
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Dennis Wolf, Martin Ebenhofer
  • Patent number: 8205726
    Abstract: A brake pad (5) for a disc brake (1) that can be associated with a caliper (2) with thrust means (9a, 9b, 9c) for clamping the brake pad (5) with friction against a braking band (4) of a brake disc (41), wherein the brake pad (5) comprises: a plate (6) with a central portion (11) provided with a layer of friction material (7), said central portion (11) having an upper edge (12) and an opposed lower edge (13) and also two lateral edges (6a, 6b) and two support appendages (14) which extend from said lateral edges (6a, 6b) of the central portion (11), each of said support appendages (14) bounding an eye (16) capable of receiving a pin (27) of the caliper (2). The upper edge (12) and lower edge (13) extend substantially along circumferences of a circle imparting an arcuate shape to the central portion (11), and said support appendages (14) are disposed substantially at the height of said lower edge (13) of the brake pad (5).
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: June 26, 2012
    Assignee: Freni Brembo S.p.A.
    Inventors: Michael Schorn, Giovanni Mario Tironi, Enrico Battista Ongaretti, Paolo Sala
  • Patent number: 8191690
    Abstract: A shim structure is provided for damping vibration and attenuating noise in a brake system. The brake system includes a forcing member operable to urge a friction member against a rotating member to slow or stop the same. The shim structure includes a shim body that is adapted to be interposed within the brake system. The shim body includes one or more tabs that are configured to oscillate out-of-phase with vibrations generated by the brake system during urging of the friction member against the rotating member to thereby dissipate vibrational energy generated by the brake system. The dimensions, orientation, and/or location of each tab are selected or engineered to provide predetermined levels of vibration and noise attenuation. A mass may be attached to each tab. The geometry, location, and/or size of each mass may be selectively modified to provide predetermined levels of vibration and noise attenuation.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: June 5, 2012
    Assignee: Material Sciences Corporation
    Inventors: Ramana Kappagantu, Eric Denys
  • Patent number: 8162111
    Abstract: An exemplary embodiment of a brake caliper has a housing with a first chamber and a second chamber. The brake caliper also has a first piston that moves in response to fluid pressure in the first chamber and has a second piston that moves in response to fluid pressure in the second chamber. A brake pad has a leading end portion that is acted upon by the first piston and has a trailing end portion that is acted upon by the second piston. A fluid passage leads to the first chamber. The trailing end portion contacts an associated rotor before the leading end portion contacts the rotor.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: April 24, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Mark T. Riefe, Brent D. Lowe, David B. Antanaitis, Patrick J. Monsere
  • Publication number: 20120073915
    Abstract: The present invention is a noise-damping shim system for use with disc brakes to dampen vibrational noise, or brake squeal. The system includes an inner shim, or noise damper, for placement between the piston and inner brake pad backing plate, where the outer surface of the inner shim adjacent to the piston has a relatively low coefficient of friction, and an outer shim, for placement between the caliper housing and outer brake pad backing plate, where the outer surface of the outer shim has a relatively high coefficient of friction. The outer surface of the inner shim may have a coefficient of friction of between 0.05 and 0.4. The outer surface of the outer shim may have a coefficient of friction of between 0.5 and 1.0. The shims may be single layer or multi-layer and composed of metal and elastomeric material or fabric, optionally with coatings such as polytetrafluoroethylene.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 29, 2012
    Inventors: STEWART KAHAN, Ken Schouten, Seong Kwan Rhee
  • Patent number: 8100233
    Abstract: A disk brake vibration damper comprising a cylindrical element (4) equipped on its cylindrical peripheral surface (41) with a layer of a supple material (5) which exhibits properties of adhesion with the materials of the piston (3) and of the cylindrical element (4). This cylindrical element (4) is intended to be positioned inside an axial cavity (30) of the piston with the layer of supple material (5) in contact with the interior wall (31) of the cavity of the piston (3).
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: January 24, 2012
    Assignee: Robert Bosch GmbH
    Inventor: Pascal Picot
  • Publication number: 20110308900
    Abstract: A brake system for disk brakes, particularly of land vehicles, including a brake caliper including two opposite brake linings adapted to engage with a brake disk arranged between the brake linings, and a brake bracket on which the brake caliper is arranged in an axially movable manner by a fastening device, wherein the fastening device includes a first bearing device through which the brake caliper is supported on the brake bracket in a vibration-damped manner, the brake caliper is supported on the brake bracket by a damping element that includes a hydro-bearing of the first bearing device, fastening device includes a second bearing device that supports the brake caliper on the brake bracket in an axially movable manner, and wherein the bearing device includes a vibration-damped fixed bearing.
    Type: Application
    Filed: November 13, 2009
    Publication date: December 22, 2011
    Inventor: Olaf Drewes
  • Publication number: 20110278110
    Abstract: A disc brake system includes a disc, and a caliper housing defining a bore that faces one side of the disc. A piston is disposed in the bore for translational movement toward the disc, and a brake pad is arranged between the piston and the disc. A shim plate is arranged between the brake pad and the piston. A convolute boot is provided that has a first end portion and a second end portion. The first end portion is sealingly connected to the caliper housing. The second end portion (i) being sealingly connected to the shim plate and (ii) including an interface area sealing portion that extends between the shim plate and the piston. The interface area sealing portion is sealingly connected to the piston to define an interface area. An anti-vibration material is located in the interface area.
    Type: Application
    Filed: May 11, 2010
    Publication date: November 17, 2011
    Applicants: Robert Bosch GmbH, Robert Bosch LLC
    Inventor: Tim Yoko
  • Patent number: 8042656
    Abstract: The strength and rigidity of pad springs are increased with a simple structure to prevent deformation and so forth of the pad springs caused by external force. A mounting member is provided with pad springs for resiliently supporting friction pads. Each pad spring has guide plates, a connecting plate, an engagement plate, radially urging portions, circumferentially urging portions, reinforcement, etc. The reinforcement includes a rectilinear reinforcement formed on a flat plate portion of the connecting plate by embossing, for example, and oblique reinforcements formed on joint portions of the connecting plate. Thus, the joint portions and so forth of the pad springs can be prevented from being deformed by external force when the brake is activated or during assembling operation, for example, and hence it is possible to prevent positional displacement of the guide plates, etc. that would otherwise be caused by the deformation of the joint portions.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: October 25, 2011
    Assignee: Hitachi, Ltd.
    Inventor: Satoru Tsurumi
  • Patent number: 8037977
    Abstract: The present invention includes a disk brake including a caliper having an opening, the opening includes two edges, the caliper also having pin holes positioned adjacent to the two edges, a pad positioned in the opening of the caliper, a pair of pad pins connectable to the pin holes of the caliper and able to movably support the pad and a bias member capable of biasing the pair of pad pins in at least one of a mutually approaching direction and a mutually separating direction, the bias member is capable of elastically pushing the pair of pad pins against hole wall surfaces of the pin holes of the caliper.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: October 18, 2011
    Assignee: Advics Co., Ltd.
    Inventor: Takeo Arakawa
  • Patent number: 8016085
    Abstract: The invention relates to a disk brake, particularly for commercial vehicles, comprising a hold-down spring (2) for holding down a force transmission device of the disk brake, wherein the hold-down spring comprises a first holding region (4) having a first support device for support on a hold-down device in the one circumferential direction of the brake disk of the disk brake and having a second support device for support on the hold-down device in the other circumferential direction of the brake disk. The hold-down spring comprises a second holding region (5) having a third support device for support on a hold-down device in the one circumferential direction of the brake disk and having a fourth support device for support on the hold-down device in the other circumferential direction of the brake disk.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: September 13, 2011
    Assignee: WABCO Radbremsen GmbH
    Inventors: Marcus Keller, Andreas Steinmetz
  • Patent number: 8016083
    Abstract: A pad spring located at the entrance side in the rotational direction of a disk is provided with guide plate portions, radially urging portions that urge a pair of friction pads radially outward of the disk, and circumferentially urging portions that urge the friction pads in the rotational direction of the disk. Each radially urging portion has a projection bent radially inward of the disk. Each guide plate portion has a space portion that allows the projection to abut against the radially inner wall surface of the associated pad guide when the radially urging portion is displaced radially inward of the disk so as to approach the guide plate portion. The circumferentially urging portions are wide plate-shaped members bent from the guide plate portions.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: September 13, 2011
    Assignee: Hitachi, Ltd.
    Inventor: Shigeru Hayashi