Spot Type Patents (Class 188/370)
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Patent number: 11802600Abstract: A caliper body of a caliper for a disc brake may have two opposite elongated portions, each adapted to face one of the two opposite braking surfaces of the disc of disc brake. The two opposite elongated portions are connected to each other by at least one caliper bridge. At least one of the two opposite elongated portions may have seat walls which delimit at least one seat, adapted to house at least one portion of a thrusting element. The thrusting element may be adapted to determine a thrusting action against at least one brake pad associable with the caliper body to press the at least one brake pad against one of the two opposite braking surfaces. The seat walls may have at least one seat bottom wall, in which the axial thickness of the seat bottom wall is less than 5 mm.Type: GrantFiled: April 19, 2017Date of Patent: October 31, 2023Assignee: Brembo S.p.A.Inventors: Cristian Crippa, Enrico Ongaretti, Giorgio Ascanelli
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Patent number: 11193549Abstract: A brake caliper comprising a body manufactured from ALM and having a skinned lattice structure. A method of designing and forming said brake caliper.Type: GrantFiled: April 27, 2016Date of Patent: December 7, 2021Assignee: ALCON COMPONENTS LIMITEDInventors: Stephen Hodgkins, Richard Humble, Andrew Smith
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Patent number: 11149807Abstract: A hydraulic caliper disc brake includes an opposing pair of pistons adapted to act on an opposing pair of washers adapted to act on an opposing pair of stator assemblies, each of the pistons comprising a spherical piston face, each of the washers comprising a spherical washer face abutting a respective one of the spherical piston faces, and a straight washer face opposite the spherical washer face and abutting a respective one of the stator assemblies.Type: GrantFiled: December 20, 2019Date of Patent: October 19, 2021Assignee: Ausco Products, Inc.Inventors: James W. Haines, Keith R. McAllister, Kenneth A. Dodd, Brian P. Dennis, Norman D. Crawford, Peter J. Pozivilko
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Patent number: 11034339Abstract: A method for operating a brake system for a motor vehicle, wherein the brake system has a braking pressure source and at least one wheel brake which can be pressurized with a braking pressure which is provided by means of the braking pressure source and acting on a brake piston. For performing a diagnosis of the brake system, the wheel brake is pressurized with a braking pressure which corresponds to a diagnosis braking pressure and which applies a certain force on the brake piston, and a counterforce directed oppositely to said force is applied to the brake piston.Type: GrantFiled: January 24, 2018Date of Patent: June 15, 2021Assignee: AUDI AGInventor: Kai Volkmar
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Patent number: 10941825Abstract: A multilayer piston insulator may comprise a plurality of axially aligned disks of a disk stack comprising, a first disk, a second disk, and a third disk, wherein the second disk is coupled axially between the first disk and the third disk and comprises a different material than the third disk, and wherein the disk stack is configured to couple to a hydraulic piston.Type: GrantFiled: April 15, 2019Date of Patent: March 9, 2021Assignee: Goodrich CorporationInventor: Timothy Kyle Todd
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Patent number: 10837506Abstract: A disc brake for utility vehicles includes a brake disc, a first brake lining on a first side of the brake disc and a second brake lining on a second side of the brake disc opposite the first side. A spreading device is also provided which generates a force that moves the first and the second brake lining away from one another.Type: GrantFiled: April 4, 2017Date of Patent: November 17, 2020Assignee: WABCO EUROPE BVBAInventors: Frank Beyer, Jochen Frank, Hans-Christian Jungmann, Marcel Kalmbach, Marcus Keller, Peter Moser, Martin Müller, Vitalij Scherer, Mirko Seip, Markus Stafflinger
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Patent number: 10690204Abstract: A brake caliper apparatus includes a caliper portion configured to be supported by a vehicle, a piston seal disposed in an annular cavity of the caliper portion, a piston disposed in a cylindrical recess in said caliper portion and having a cylindrical outer surface in sealing contact with the piston seal, the piston being movable within said cylindrical recess along an axial direction, a heat shield disposed at an axial end of the piston, and a sealing boot having a first end attached to the heat shield at an attachment portion of the heat shield and a second end engaged to the caliper portion at an engagement portion of the caliper portion, the piston seal and the engagement portion being on a common plane perpendicular to the axial direction.Type: GrantFiled: December 13, 2018Date of Patent: June 23, 2020Assignee: ADVICS CO., LTD.Inventor: Masakazu Takeuchi
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Patent number: 10414883Abstract: A method for producing a molded article of the present invention includes a step of preparing a pellet raw material containing a resin and raw fibers, a step of cutting the pellet raw material to obtain a plurality of pellets each containing the resin and fibers produced by cutting the raw fibers, a step of opening the fibers contained in each pellet; and a step of molding the pellets after being opened to obtain the molded article. According to the present invention, it is possible to easily produce a molded article (e.g., a back plate of a brake pad) having excellent mechanical strength. Further, According to the present invention, it is also possible to provide a molded article and a back plate each having excellent mechanical strength, and a brake pad having high reliability.Type: GrantFiled: January 22, 2015Date of Patent: September 17, 2019Assignee: SUMITOMO BAKELITE CO., LTD.Inventors: Hideaki Inokuchi, Shinya Yamamoto, Koji Koizumi
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Patent number: 9970493Abstract: A disc brake having a caliper, a housing bore, a guide insert, and a piston. The housing bore extends inboard from an outboard face of a housing portion of the caliper. The guide insert may have an inner guide bore and may be mounted within the housing bore. The piston may be slideable within the inner guide bore relative to the guide insert so as to urge a brake pad towards a rotor.Type: GrantFiled: January 27, 2016Date of Patent: May 15, 2018Assignee: Meritor Heavy Vehicle Braking Systems (UK) LimitedInventors: Sean Cleary, Dietmar Knoop, Refaat Malki, Mark Norman, Paul Roberts, Paul Thomas, Neil Williams
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Patent number: 9746042Abstract: In an opposed-piston disc brake caliper, a pair of reinforcement bridge portions, which are inclined relative to an axial direction, are provided on outside of a rotor in a radial direction of the rotor so as to define corner opening portions in an opening portion which is defined by an inner body portion, an outer body portion, and an entry-side connection portion and an exit-side connection portion connecting the inner body portion and the outer body portion. A torque receiving portion of one of the entry-side torque receiving portion and the exit-side torque receiving portion is exposed toward an outside in the radial direction via the corner opening portions.Type: GrantFiled: January 15, 2016Date of Patent: August 29, 2017Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.Inventors: Takefumi Morio, Tetsuya Noguchi, Tsuyoshi Suzuki, Yoshio Totsuka
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Patent number: 9551388Abstract: Disclosed is a disk brake caliper assembly where a second seal is positioned in a second annular groove to eliminate the seizure of the piston cylinder that commonly occurs on trailer brakes that are immersed in water. The second seal is slightly deformable and designed to frictionally engage the piston. The second seal functions as both a wiper to keep dirt and contaminants out of the cylinder assembly and to prevent water ingress. The use of the secondary seal can compliment or eliminate the need for a dust boot.Type: GrantFiled: November 26, 2014Date of Patent: January 24, 2017Inventors: Henry Dombroski, Anthony Cunningham
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Patent number: 8991564Abstract: A disk brake includes a caliper body having a cylinder portion (25) with a cylindrical shape. The cylinder portion (25) has a bore (30) with a bottom (34) formed by integrally joining together an opening peripheral edge (98) at the bottom side of the cylinder portion (25) and a bottom cover member (92) to be fitted to the opening peripheral edge (98) through friction stir welding. The bottom cover member (92) has a disk shape and is friction-stir-welded along the outer periphery thereof. The terminating point of the friction stir welding is within the boundaries of the bottom cover member (92).Type: GrantFiled: September 22, 2011Date of Patent: March 31, 2015Assignee: Hitachi Automotive Systems, Ltd.Inventors: Shinji Suzuki, Takahiro Tokunaga, Yuichi Kobayashi, Yasuhisa Omata, Jun Watanabe, Seunghwan Park, Akihiro Sato, Satoshi Hirano, Kazutaka Okamoto
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Patent number: 8991565Abstract: Disc brake piston cap (3) interposed between the caliper (1) and the piston (2) to protect the piston (2). The cap (3) has a bulge (351) on the inner fold (35) which is engaged in the groove (22) of the piston (2), and has an overmolded insert (31) fixed to the annular groove (11) of the caliper. The folded cap (3), with the overmolded insert (31), intermediate folds (33, 34) and an outer fold (32), comprises longitudinal ribs (352) on the face of the inner fold (35) to stiffen this fold and allow air to pass from the inside to the outside around the bulge (351) of the inner fold (35), housed in the groove (22).Type: GrantFiled: February 1, 2012Date of Patent: March 31, 2015Assignee: Chassis Brakes International B.V.Inventors: Pascal Champion, Philippe Barret, François Daguzan, Thierry Bindner
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Patent number: 8807298Abstract: A disk brake is provided which is free from problems attributed to the obverse-reverse orientation of a cover member as installed. A cylinder portion (21) slidably accommodating a piston is formed from a plate-shaped cover member (43) constituting the bottom thereof and a caliper body main part (46) having an opening (45) that is closed with the cover member (43). The cover member (43) is joined to the caliper body main part (46) to close the opening (45). A projection (60) is provided on one side of the cover member (43) that faces inside the cylinder portion (21), and a blind hole (61) is provided on the other side of the cover member (43). When the cover member (43) has been installed in the normal orientation, the blind hole (61) remains after the outer surface of the bottom of the caliper body has been subjected to face cutting after the installation of the cover member (43).Type: GrantFiled: September 23, 2008Date of Patent: August 19, 2014Assignee: Hitachi, Ltd.Inventors: Keisuke Nanri, Junichi Nagasawa, Yuichi Kobayashi, Yoshimasa Matsui, Kiyotaka Nomura, Jun Takahashi
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Publication number: 20140202811Abstract: A brake caliper of a disk brake for a utility vehicle is provided. The brake caliper includes tension braces which are arranged substantially parallel and at a distance from each other, straddling a brake disk and connecting receptacles for functional parts arranged on both sides of the brake disk. One receptacle forms a caliper back and the other receptacle forms a housing having a lever dome formed thereon. The brake caliper includes at least one replaceable service-related wear protection element fastened to areas of potential wear during in-service use of the brake caliper, such as at the lower side of the leading tension brace and at least partially around the lever dome.Type: ApplicationFiled: March 21, 2014Publication date: July 24, 2014Applicant: KNORR-BREMSE Systeme Fuer Nutzfahrzeuge GmbHInventors: Markus GRUBER, Wolfgang PRITZ, Martin MACK
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Publication number: 20140158488Abstract: Caliper bodies are provided for disc brakes suitable for being arranged astride of a disc for a disc brake, which include an attachment side portion, a non-attachment side portion and at least one bridge, said bridge being suitable for connecting such side portions and for being arranged astride of the disc, wherein the caliper body includes at least one portion made from thermoplastic material, reinforced with carbon fibres, with resistance to a temperature of at least 200° C. Disc brakes which incorporate such caliper bodies are also provided.Type: ApplicationFiled: May 9, 2011Publication date: June 12, 2014Applicant: PETROCERAMICS S.p.A.Inventors: Massimiliano Valle, Niccolo' Ignazio Maria Pini
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Patent number: 8701841Abstract: Brake caliper bodies and brake calipers for disc brakes are provided.Type: GrantFiled: December 24, 2010Date of Patent: April 22, 2014Assignee: Freni Brembo S.p.A.Inventors: Cristian Crippa, Paolo Cesani, Massimo Preda
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Patent number: 8672100Abstract: A disk brake having a cylinder apparatus wherein although an opening of a cylinder body is closed by a covering member, processing and parts' costs are reduced, fluid leakage is prevented, and the apparatus can be reduced in size. A piston (17) is caused to slidingly move in a bore (26) of a cylinder (21) of the cylinder apparatus. The cylinder (21) includes a covering member (43) provided in a bottom portion (42) of the cylinder (21), and a cylinder body (46) having an opening that is closed by the covering member (43). The covering member (43) is friction stir welded to the cylinder body (46).Type: GrantFiled: February 6, 2006Date of Patent: March 18, 2014Assignee: Hitachi, Ltd.Inventors: Tomoji Sato, Keisuke Nanri
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Patent number: 8651254Abstract: An apparatus for a disk brake comprises a caliper body having an inner peripheral surface and a seal groove disposed at the inner peripheral surface. The inner peripheral surface is dimensioned to slidably receive a piston therein, wherein the piston moves in a direction of a braking direction axis, and the seal groove is dimensioned to receive a seal therein so that the seal can seal a space between the inner peripheral surface and the piston. The seal groove comprises a movement restricting part that restricts movement of the seal in the direction of the braking direction axis, and a movement permitting part formed as a step facing radially inwardly.Type: GrantFiled: February 3, 2005Date of Patent: February 18, 2014Assignee: Shimano, Inc.Inventors: Etsuyoshi Watarai, Shinichi Takizawa, Hisashi Matsui
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Patent number: 8616349Abstract: A disc brake to receive a disc and a brake pad. The disc brake includes an inner pad to produce friction with one side of a disc, an outer pad to produce friction with an opposite side of the disc, and a caliper housing including a cylinder part provided therein with a cylinder to receive a piston to press the inner pad and a finger part provided in front of the cylinder part to press the outer pad. The caliper housing includes a spacer to variably change an interval between the cylinder part and the finger part.Type: GrantFiled: November 24, 2010Date of Patent: December 31, 2013Assignee: MANDO CorporationInventor: Jung Sik Kang
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Patent number: 8567574Abstract: A brake caliper has a brake pad having a backplate with a friction material attached to one side and a loading face on an opposite side. The caliper further includes a piston that applies a force to the loading face. The brake pad is releasably attached to the piston, thereby eliminating a separate brake pad retaining structure in the caliper.Type: GrantFiled: May 12, 2009Date of Patent: October 29, 2013Assignee: ArvinMeritor Light Vehicle Systems (UK) Ltd.Inventors: Paul Roberts, Paul Anthony Thomas, Anthony John Williams, Denis John McCann, Carl Edward Heinlein
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Patent number: 8561762Abstract: A brake piston may include a steel core and a phenolic outer layer that may be overmolded to the steel core.Type: GrantFiled: September 3, 2009Date of Patent: October 22, 2013Assignee: Honda Motor Co., Ltd.Inventors: Peter Schupska, Jeff Platt
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Patent number: 8534428Abstract: A hydraulic disc brake caliper that includes a housing that has first and second side portions and first and second end portions that cooperate to define a braking opening. The housing also includes first and second piston receiving openings and first and second fluid openings. The caliper also includes a bolt received in the second fluid opening that includes a shaft having a portion of a fluid path defined in the outer surface thereof that includes at least one channel and at least one reduced diameter portion. The fluid path extends from the first fluid opening to the second fluid opening. The at least one channel and the at least one reduced diameter portion are part of the fluid path and are in fluid communication between the first and second piston receiving openings.Type: GrantFiled: July 6, 2009Date of Patent: September 17, 2013Assignee: Shimano Inc.Inventors: Takahiro Yamashita, Shinichi Takizawa
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Patent number: 8459421Abstract: There is provided a disk brake comprising: a piston that presses a brake pad to a disk rotor; and a caliper at which the piston is slidably provided through a piston seal, the caliper making the piston moved forward by hydraulic pressure, wherein the piston has that an anodized film layer formed by an anodized treatment is formed on a surface of a piston base body made of aluminum alloy, and a chromium plating layer is directly laminated on a surface of the anodized film layer.Type: GrantFiled: February 26, 2010Date of Patent: June 11, 2013Assignee: Hitachi Automotive Systems, Ltd.Inventors: Shintaro Tsujimi, Kiyokazu Nakane
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Patent number: 8448754Abstract: Disc brake comprising an hydraulic actuator for clamping shoes guided by a caliper (14) and an annular seal (10) lodged with axial clearance (J) in a groove (28) of the actuator for ensuring fluid-tightness between the piston (16) and the cylinder of the actuator, characterized in that the groove (28) comprises a rib (40) for the axial locking of the seal (10).Type: GrantFiled: November 2, 2007Date of Patent: May 28, 2013Assignee: Chassis Brakes International B.V.Inventors: Olivier Kubic, Eric Lemoine
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Publication number: 20130126284Abstract: The invention relates to a disk brake, in particular for utility vehicles, having a carrier, a caliper, a holder device for displaceably holding the caliper on the carrier, a seal which is fixed in a recess on the holder device, and a pretensioning device for pretensioning the seal in the recess, wherein the pretensioning device is activated by the mounting of the holder device.Type: ApplicationFiled: April 7, 2011Publication date: May 23, 2013Applicant: WABCO RADBREMSEN GMBHInventor: Manuel Reiser
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Patent number: 8408366Abstract: The bottom surface of a seal groove provided in a cylinder bore has a first slant portion and a second slant portion. A transition point between the first slant portion and the second slant portion is located closer to the opening of the cylinder bore than the center in the cylinder bore axial direction of the seal groove. A gap is formed between the outer peripheral surface of a piston seal member and the bottom surface of the seal groove, and the surface pressure applied to the bottom surface of the seal groove from the piston seal member is higher at the cylinder-bottom-side end of the piston seal member than at the cylinder-opening-side end thereof. Thus, it is possible to suppress the movement of the piston toward the cylinder bore bottom due to thermal expansion of the piston seal member.Type: GrantFiled: March 23, 2011Date of Patent: April 2, 2013Assignee: Hitachi Automotive Systems, Ltd.Inventors: Kimiyasu Kono, Keisuke Nanri
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Patent number: 8376101Abstract: A brake caliper comprising a piston seat (10) wherein a piston (2) slides with its side surface (11) in contact with a radial surface (13) of an elastic member (12). The member further comprising two axial surfaces (15,16) adapted to be affected by a pressurized fluid and being arranged at the piston coming out side facing the pads respectively. The latter surface facing with a portion (17) thereof, a first chamber (18) arranged in the proximity of the piston side surfaces, with another portion (24) thereof, an abutment surface (19) adapted to support said elastic member when it is urged by the pressurized fluid, said abutment surface being radially retracted so as to be farther from the piston side surface than said first chamber and with a further portion (25) thereof, at least one second chamber (20) arranged radially farther from said piston side surface than said abutment surface.Type: GrantFiled: December 2, 2008Date of Patent: February 19, 2013Assignee: Freni Brembo S.p.A.Inventors: Cristian Crippa, Paolo Cesani, Luca Lenzi
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Patent number: 8371422Abstract: A torque plate for a vehicle brake is comprised of a sheet metal body. The sheet metal body includes a center opening that defines a lateral axis and a plurality of mounting holes. The center opening receives an axle housing and the mounting holes are used to secure the vehicle brake to the torque plate. Each mounting hole is defined by a center axis that is non-parallel to the lateral axis.Type: GrantFiled: June 9, 2008Date of Patent: February 12, 2013Assignee: Meritor Wabco Vehicle Control SystemsInventors: Mark L. Frost, Daniel J. Philpott
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Patent number: 8348030Abstract: A brake pad actuating device comprising: a piston including: a first pocket; an opposing second pocket; and an internal wall located in the piston separating the first pocket and the second pocket, wherein the volume of the first pocket to the volume of the second pocket form a ratio of less than about 20:1; and wherein the piston is adapted to be used as a brake piston.Type: GrantFiled: June 21, 2010Date of Patent: January 8, 2013Assignee: Akebono Brake CorporationInventors: Amar Alamin, Eric J. Roszman
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Patent number: 8261889Abstract: An opposed-piston disc brake includes cylinder connection oil passages respectively connected to a cylinder of an inner caliper portion and a cylinder of an outer caliper portion, passage communication bores respectively formed at bridge portions to extend in an axial direction of a disc in a substantially straight manner. The cylinder connection oil passages are formed using a core at the time when a caliper body is cast. The cylinder connection oil passages extend in a radially outer direction of the disc. Ends of the cylinder connection oil passages in a longitudinal direction thereof are directly connected to the passage communication bores. In a state where the caliper body is mounted on a vehicle, a top portion of an inner wall surface of one of the passage communication bores is positioned higher than the ends of the cylinder connection oil passages.Type: GrantFiled: October 13, 2009Date of Patent: September 11, 2012Assignee: Advics Co., Ltd.Inventors: Satoru Itsuaki, Shinichi Morita
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Patent number: 8196716Abstract: A caliper for a disc-brake includes two side walls at a distance from each other which delimit a space to accommodate a portion of a brake disc. The side walls are connected to each other by a connecting structure which straddles the disc space. Each of the side walls delimits at least one seating capable of accommodating a pad. The caliper comprises a thrust to clamp the pads against the brake disc. The thrust is secured to the side walls in such a way that the side walls absorb the entire clamping force and the seatings are capable of securing the pads so that the side walls also absorb the entire braking moment. The connecting structure comprises arc-shaped shells, connected so as to be integral with both the side walls. The slenderness of the shells expressed as the ratio of thickness to circumferential extension relative to an axis of rotation of the brake disc is less than 17/100.Type: GrantFiled: December 30, 2003Date of Patent: June 12, 2012Assignee: Freni Brembo S.p.A.Inventors: Michael Schorn, Giovanni Mario Tironi, Enrico Battista Ongaretti, Paolo Sala
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Patent number: 8162111Abstract: 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: GrantFiled: December 12, 2008Date of Patent: April 24, 2012Assignee: GM Global Technology Operations LLCInventors: Mark T. Riefe, Brent D. Lowe, David B. Antanaitis, Patrick J. Monsere
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Patent number: 8083036Abstract: A method for manufacturing callipers for disc brakes. The calliper includes a body in which cylindrical chambers are formed inside which pistons run bearing pads intended for acting on the disc of the brake during the braking step. The method includes the steps of providing a body provided with a slit intended for receiving the disc of the brake and with a pair of cavities aligned transversely to the slit on opposite sides of the slit. The cavities are intended for forming a pair of cylindrical chambers. One of the cavities has a first opening on the slit and a second opening to the outside of the body at which there is a tapered portion with a decreasing section towards the outside of the body. Closing the second opening is a cap applied in the cavity by the slit. The cap has a tapered portion that is forced at the tapered portion of the second opening to form a cylindrical chamber of the calliper.Type: GrantFiled: May 29, 2008Date of Patent: December 27, 2011Assignee: Sunstar Engineering Pte. Ltd.Inventor: Cesare Brioschi
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Patent number: 8083035Abstract: A method of manufacturing a cylinder apparatus wherein although an opening of a cylinder body is closed by a covering member, processing and parts costs are reduced, fluid leakage is prevented, and the apparatus can be reduced in size. The cylinder apparatus includes a piston (17) which is caused to slidingly move in a bore (26) of a cylinder (21). The cylinder 21 includes a covering member (43) provided in a bottom portion (42) of the cylinder (21), and a cylinder body (46) having an opening that is closed by the covering member (43). The covering member (43) is friction stir welded to the cylinder body (46).Type: GrantFiled: March 28, 2008Date of Patent: December 27, 2011Assignee: Hitachi, Ltd.Inventors: Tomoji Sato, Keisuke Nanri
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Publication number: 20110308904Abstract: A brake pad actuating device comprising: a piston including: a first pocket; an opposing second pocket; and an internal wall located in the piston separating the first pocket and the second pocket, wherein the volume of the first pocket to the volume of the second pocket form a ratio of less than about 20:1; and wherein the piston is adapted to be used as a brake piston.Type: ApplicationFiled: June 21, 2010Publication date: December 22, 2011Applicant: Akebono CorporationInventors: Amar Alamin, Eric Roszman
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Patent number: 7980366Abstract: A hydraulically actuated disc brake has at least two hydraulic brake pistons acting upon a brake lining, arranged in a brake housing. The hydraulic disc brake includes a hydraulic synchronization device for reducing oblique wear of the brake lining. The hydraulic synchronization device is interposed between an input pressure line for brake actuation and the brake piston.Type: GrantFiled: April 8, 2010Date of Patent: July 19, 2011Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventors: Aleksandar Pericevic, Johann Baumgartner, Robert Trimpe, Steffen Geissler
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Patent number: 7971689Abstract: A hydraulic caliper brake assembly for a bicycle comprises a caliper body; a first chamber installed in the caliper body; a first piston installed in the first chamber; a second piston installed in the first chamber; an inner chamber formed between the first piston and the second piston for receiving brake oil; an outer chamber installed between the second piston and the caliper body for receiving brake oil; and an outer valve installed in the second piston for switching flowing of the brake oil between the inner chamber and outer chamber. When a small force is applied, the brake oil will flow into the inner chamber; by closing the outer valve, the first piston is pushed to have the effect of speed reduction; when the braking force is increased, by opening the outer valve, the second piston is pushed to have the effect of emergent braking.Type: GrantFiled: March 28, 2008Date of Patent: July 5, 2011Inventor: Wayne-Ian Moore
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Patent number: 7905336Abstract: A flexible boot for protecting a cylinder-piston unit of a disk brake of the type that includes a piston slidable in a cylinder in order to act on a brake pad. The flexible boot has a surface with a portion that can face a wall of the pad when in a rolled-up position. The flexible boot is characterized in that it comprises at least one spacer element that is associated with the surface and is intended to come into contact with the wall of the pad in order to keep the portion of the surface spaced from the wall of the pad.Type: GrantFiled: November 30, 2000Date of Patent: March 15, 2011Assignee: Freni Brembo S.p.A.Inventor: Gianpaolo Cortinovis
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Publication number: 20110048869Abstract: A brake piston may include a steel core and a phenolic outer layer that may be overmolded to the steel core.Type: ApplicationFiled: September 3, 2009Publication date: March 3, 2011Inventors: Peter Schupska, Jeff Platt
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Patent number: 7669699Abstract: A brake caliper has a brake pad having a backplate with a friction material attached to one side and a loading face on an opposite side. The caliper further includes a piston that applies a force to the loading face. The brake pad is releasably attached to the piston, thereby eliminating a separate brake pad retaining structure in the caliper.Type: GrantFiled: August 6, 2003Date of Patent: March 2, 2010Assignee: ArvinMeritor Light Vehicle Systems (UK) LimitedInventors: Paul Roberts, Paul Anthony Thomas, Anthony John Williams, Denis John McCann, Carl Edward Heinlein
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Publication number: 20090255769Abstract: A brake caliper that has the same performance as a brake caliper with multiple pistons despite its compact structure, in which drag resistance between a brake pad and a brake disk is minimized, that is less likely to produce non-uniform wear of brake pad and brake squealing, and whose weight and cost are suppressed. Pistons (23) are formed in a circular hollow cylindrical shape, and apply pressing force to a disk rotor (1) by circular pressing parts. Piston-containing holes (21) recessed in a circular shape and containing the pistons (23) so that they can slide in the axial direction of the pistons are formed in caliper bodies (100, 105).Type: ApplicationFiled: April 17, 2009Publication date: October 15, 2009Applicant: NUKABE CORPORATIONInventor: Shozo KURITA
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Publication number: 20090050427Abstract: The present invention is predicated upon a brake caliper assembly, comprising a finger portion including a first end that is free and a second end, an inner surface and an outer surface, a cylinder portion including a first end that is free and a second end, an inner surface and an outer surface, and a bridge portion, including an inner surface and an outer surface, for connecting with the second end of the finger portion at a finger corner region having an inner surface and an outer surface, and for connecting with the second end of the cylinder portion at a cylinder corner region having an inner surface and an outer surface, and for defining a continuous surface that includes the inner surfaces of each of the finger portion, the cylinder portion, the finger corner region, the cylinder corner region and the bridge portion, wherein the inner surface of at least one of the finger or cylinder corner regions includes an inclined surface that is generally flat for a span of at least about 2 mm.Type: ApplicationFiled: August 18, 2008Publication date: February 26, 2009Applicant: Akebono Corporation ( North America)Inventor: Philip N. Jedele
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Patent number: 7275624Abstract: To provide a motorcycle disk brake that can ensure brake force and also enable miniaturization. A motorcycle disk brake unit (10) has a part (105) of a piston (56) which projects outwards from an outer edge (35) of a brake disk (33), and by forming parts (67), within an outer back plate (65) and an inner back plate (75), corresponding to the piston (56) following the piston (56) so that an outer pad (90) and an inner pad (95) do not project out further than the outer edge (35) of the brake disk (33), another part (68) following the outer edge (35) of the brake disk (33), and a bridge section (53) following respective back plates (65), (75), a part (54) of the bridge section (53) can project further inwards than the piston (56) resulting in miniaturization of disk brake unit (10).Type: GrantFiled: February 4, 2004Date of Patent: October 2, 2007Assignee: Honda Motor Co., Ltd.Inventor: Kazuhiko Gogo
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Patent number: 6968928Abstract: An air disk brake caliper housing is disclosed. The caliper housing includes a open rear end portion that opens into a passageway for receiving an actuator/adjuster mechanism. To minimize the outer contour of the caliper housing to alleviate packaging concerns with respect to a vehicle axle, the passageway is offset above an operating position for the actuator/adjuster mechanism. As the actuator/adjuster mechanism is inserted into the offset passageway, it passes a retaining step formed in the interior of the passageway to provide sufficient running clearance for gears of the actuator/adjuster mechanism. Once passing the retaining step, the actuator/adjuster mechanism may be dropped down to the appropriate operating height and installed in the operating position within the caliper.Type: GrantFiled: January 2, 2003Date of Patent: November 29, 2005Assignee: Dana CorporationInventor: Daniel E. Banks
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Publication number: 20040256187Abstract: A piston seal of a disc brake can stabilize the amount of rollback of a piston by reducing thermal expansion and a decrease in modulus of elasticity of the piston seal caused by an increase in temperature, thereby preventing a driver from feeling that the brake operation is unnatural. The piston seal is formed of a rubber composition in which at least 100 parts by weight or more of carbon black is added to 100 parts by weight of ethylene propylene rubber.Type: ApplicationFiled: April 15, 2004Publication date: December 23, 2004Applicants: NISSIN KOGYO CO., LTD., FUKOKU CO., LTD.Inventors: Toru Noguchi, Kazuhito Kawata, Takashi Wanibuchi, Koichi Arita
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Publication number: 20040188188Abstract: A caliper assembly has a one-piece housing with a first and second wall opposing one another. A pair of bridge sides connect the first and second walls. A bore is formed in the first wall to receive a piston assembly. An opening is formed between the first wall, second wall and pair of bridge sides. The opening enables access into the caliper body. At least one aperture is formed in the second wall. The aperture is continuous with the opening to enable access into the body.Type: ApplicationFiled: March 24, 2003Publication date: September 30, 2004Inventors: Manuel Barbosa, Sean C. Barrett, Philip N. Jedele
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Patent number: 6719104Abstract: The invention relates to a composite brake caliper and method for producing the same. The method for producing the composite brake caliper comprises the steps of: (a) providing a molding apparatus having at least a pair of mold sections, at least one of the pair of mold sections including at least one projection extending from a surface thereof; (b) providing at least one reinforced preform formed from at least a first material, the preform having at least one opening formed at least partially therein; (d) positioning the preform in the molding apparatus with the projection of the mold section extending into the opening of the preform so as to orient the preform in a predetermined position within the molding apparatus; and (e) casting a caliper body formed from a second material in situ therewith to produce the composite brake caliper.Type: GrantFiled: December 28, 2001Date of Patent: April 13, 2004Assignee: Kelsey-Hayes CompanyInventors: Jonathan Wemple, Perry Jenkins, Harry A. Hunnicutt
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Patent number: 6497315Abstract: Modified friction pad and friction-pad receptale assembly for a brake/clutch module permitting greater ease inserting pad into and withdrawing it from the brake/clutch module. The pad is held into the receptacle by clips at the distal end of the receptacle rather than the proximal end. That configuration, in conjunction with finger-grip depressions near the proximal end of the pad, allow the pad to be removed with one hand. Additionally, the friction pad assembly protects the torque-resistor pad guides from wear by interposing the spring steel of the retaining clips between the pad assembly and these guides.Type: GrantFiled: January 29, 2001Date of Patent: December 24, 2002Assignee: The Montalvo CorporationInventor: Ryan T. Peary
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Patent number: RE38975Abstract: A bicycle disc brake is provided in which a support member movably couples the brake caliper to the frame of the bicycle. The bicycle disc brake caliper has a caliper housing with a single piston unit. The piston unit is movably coupled to the housing between a release position, in which the piston unit is spaced from a disc brake mounted to a wheel of a bicycle, and a braking position, in which the piston unit engages the disc brake of the bicycle wheel. The piston unit has a first friction member movably coupled between a release position and a braking position and a second friction member arranged substantially parallel to the first friction member to form a disc brake receiving space between the first and second friction members. In one embodiment, the caliper housing is movably coupled to the support member by a pivot pin. In another embodiment, the caliper housing is movably coupled to the support member by a linkage assembly.Type: GrantFiled: December 6, 2002Date of Patent: February 14, 2006Assignee: Shimano Inc.Inventors: Kanji Kirimoto, Yoshiaki Ando, Kenji Ose, Tadashi Ichida, Toshio Tetsuka, Tatsuya Matsushita