Piston For Each Of Plural Elements Patents (Class 188/72.5)
  • Patent number: 10364855
    Abstract: A disc brake caliper includes an outer body, an inner body, and joining parts connecting the inner body and the outer body with each other at both end portions in a circumferential direction of a rotor so as to form an opening part. An inward end edge of both end edges in the circumferential direction of at least one of the joining parts, which defines an end part of the opening part in the circumferential direction, is inclined relative to an axial direction of the rotor towards a central part in the circumferential direction of the outer body from the inner body side to the outer body side, so that a length of the opening part in the circumferential direction is shortened from the inner body side to the outer body side.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: July 30, 2019
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Yosuke Miyahara, Kenichi Shimamura
  • Patent number: 10280995
    Abstract: A brake caliper housing having: an inner body having one or more inner piston bores open toward a rotor gap; an outer body having: one or more outer piston bores open toward the rotor gap, a bridge structure which extends over the rotor gap, and a plurality of reinforcing structures included in the bridge structure; wherein a longitudinal plane passes through both the inner body and the outer body; wherein the plurality of reinforcing structures extend at an angle away from the longitudinal plane as the plurality of reinforcing structures extend from an exterior surface of the outer body over the rotor gap; and wherein one or more bridge fasteners parallel to the longitudinal plane secure the bridge structure to the inner body so that the bridge structure connects the outer body to the inner body.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: May 7, 2019
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventors: Brad Robert Lethorn, Scott Alan Dubay
  • Patent number: 9810275
    Abstract: A sliding caliper disk brake is provided, in which a stationary brake carrier configured to carry a brake caliper includes two pairs of carrier horns, one pair of which supports a reaction-side brake pad and one pair of which supports an application side brake pad. The spacing between the reaction-side pair of carrier horns is larger than the spacing between the application-side pair of carrier horns. The reaction-side brake pad and reaction-side pair of carrier horns may be shorter than the corresponding application-side brake pad and carrier horns. The arrangement of the brake carrier, the brake caliper and the brake pads permits reduction in disk brake weight, cost and brake carrier stresses while providing desired brake thermal, mechanical and service life performance.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: November 7, 2017
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Abdelaziz Rguichi, Philipp Adamczyk, Matthias Klingner, Alexander Werth, Michael Peschel, Robert Theil
  • Patent number: 9810276
    Abstract: A disc brake assembly arranged to be mounted over a rotor. The disc brake assembly includes first and second brake pads, a caliper having an opening for receiving the first and second brake pads, and a spring member for retaining the pads within the caliper. The spring member has a pad alignment feature arranged to prevent the spring member from being properly assembled on the caliper when one or more of the brake pads is inserted with its friction material facing away from a rotor receiving region of the caliper.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: November 7, 2017
    Assignee: Meritor Heavy Vehicle Braking Systems (UK) Limited
    Inventor: Paul Roberts
  • Patent number: 9358961
    Abstract: A disc brake, in particular for a commercial vehicle, including a brake caliper, which reaches over a brake disc and in which brake pads are positioned that can be pressed against the brake disc on both sides by at least one brake application device and that each have a lining carrier plate and a friction lining fastened thereto. The brake application device has at least one brake piston that acts on the lining carrier plate at the end face of the brake piston. The disc brake is designed such that at least one of the brake pads is supported in an articulated, pivotable, manner in the radial direction of the brake disc.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: June 7, 2016
    Assignee: KNORR-BREMSE System fuer Nutzfahrzeuge GmbH
    Inventor: Wolfgang Pahle
  • Patent number: 9193413
    Abstract: A disc brake caliper is provided. The disc brake caliper may include a main body having a first portion, a second portion having no bleeding port, and a connecting portion connecting the first portion with the second portion such that a slot for arranging a disc rotor is defined between the first portion and the second portion. Arranged on the first portion are a first fluid port and a second fluid port fluidly connected to the first fluid port by a fluid flow path.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: November 24, 2015
    Assignee: Shimano Inc.
    Inventor: Daisuke Nago
  • Patent number: 9181999
    Abstract: The invention illustrates a caliper body (1) for a disc brake, suitable for being arranged astride of a disc (40) for a disc brake, said disc (40) defining a first braking surface (41) and a second braking surface (42) opposite the first braking surface (41); said caliper body (1) comprising a first half-caliper (2) and a second half-caliper (3), which are obtained by casting without machining and are suitable for being connected together at respective contact surfaces (4?, 4?) defining a joining plane (P) of the half-calipers; said first half-caliper (2) comprising a wheel-side elongated portion (5), extending in a tangential direction, which is suitable for facing an axially inner surface thereof towards the first braking surface (41), and at least one first projecting portion (11), projecting in an axial direction provided with a first contact surface (4?) suitable for connecting with the second half-caliper (3); said second half-caliper (3) comprising a vehicle-side elongated portion (6), extending in a t
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: November 10, 2015
    Assignee: FRENI BREMBO S.p.A.
    Inventors: Fabio Scotti, Armando Puddu, Antonio Gotti
  • Patent number: 9145120
    Abstract: A sliding caliper parking brake that positively retracts of both the outer and the inner brake pads upon de-actuation of the parking brake is provided. The parking brake includes a caliper body, a mounting assembly that slidably mounts the caliper body on the suspension of the vehicle so that is movable with respect to a brake rotor, and at least one piston assembly movably mounted in a bore in the caliper body and having an end connected to an inner brake pad. An outer brake pad is fixedly connected to the caliper body and is moved into engagement with an outer side of the brake rotor when the caliper body is moved along the mounting assembly as a result of the inner brake pad extending into engagement with the inner side of the brake rotor.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: September 29, 2015
    Assignee: Performance Friction Corporation
    Inventors: Donald L. Burgoon, Darin E. Cate
  • Patent number: 8997945
    Abstract: This invention relates to a brake caliper adapted for use in a vehicle disc brake assembly and method and apparatus for producing the same. The method for producing the brake caliper comprises the steps of: (a) providing a mold member having at least two mold sections; (b) providing a core member having at least a first male extension which is adapted to form an integrally cast locating recess in the brake caliper which is used as a locating surface for subsequent machining of the brake caliper; (c) disposing the core member in the mold member in a predetermined position; (d) supplying a suitable material to the mold member so as to form a brake caliper within the mold; (e) removing the brake caliper from the mold, wherein the brake caliper includes an integrally cast locating recess formed therein by the first male extension of the core member; and (f) machining the brake caliper using at least the integrally cast locating recess formed therein as a locating surface.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: April 7, 2015
    Assignee: Kelsey-Hayes Company
    Inventors: Eduardo Morais, Harry Miller
  • Publication number: 20150060216
    Abstract: A full contact brake comprising: (a) an inboard housing including: an inner and outer seal groove including a seal; (b) an outboard housing including: an inner and outer seal groove including a seal; and (c) a bridge tube between the inboard housing and the outboard housing; wherein the inboard housing, the outboard housing, and the bridge tube form a housing comprising: (i) an inboard piston between the inner and outer seal groove; (ii) an outboard piston between the inner and outer seal groove; and (iii) a rotor between the inboard and outboard piston so that the inboard piston is moved towards an inboard side and the outboard piston is moved towards an outboard side of the rotor; and wherein the seal of the inboard housing forms an interference fit around the respective piston so that rotation of the inboard and outboard piston respectively are substantially prevented during a brake apply.
    Type: Application
    Filed: August 27, 2013
    Publication date: March 5, 2015
    Applicant: Akebono Brake Corporation
    Inventors: Galus Chelaidite, Gang Lou
  • Publication number: 20150021125
    Abstract: A caliper assembly for a service and parking disc brake (1) comprising a service caliper body (2) placed astride a disc for a disc brake having a first and second elongated element on the vehicle side (4), a first service pad (8) to abut it against a first braking surface of the disc and exercise a service braking action on the vehicle, said first elongated element (4) comprising a first abutment and guide pin (16) of the first pad (8) to guide it and receive the braking action of the vehicle, a parking caliper (17) comprising separate thrust means (20) of the parking caliper and for abutting at least a third parking pad (21) against the first braking surface of the disc, said parking caliper (17) has a connection (18) for supporting and connecting at least partially said parking caliper (17) to said service caliper body (2), said connection (18) of the parking caliper (17) to the service caliper body (2) comprises a first blocking screw (19) positioned coaxially to said first support and guide pin (16) of th
    Type: Application
    Filed: February 15, 2013
    Publication date: January 22, 2015
    Applicant: Freni Brembo S.p.A.
    Inventors: Lorenzo Nessi, Adriano Bonetti, Cristian Crippa
  • Patent number: 8899386
    Abstract: A pneumatic disc brake has a caliper which straddles a brake disc, brake pads pressable against the brake disc, wherein a brake-application-side brake pad can be actuated by a brake lever of a brake application device pivotable about an eccentric axis. Against the end side, the brake lever bears a brake ram which is coupled at the other side to the brake pad or to a guide plate coupled thereto. Two pressure rams are aligned in the same direction and spaced apart from the brake ram. The pressure rams are connected in each case to the caliper and to the brake pad or to the guide plate and have a self-energizing device. The caliper has spherical-cap-shaped bearing receptacles in which rest corresponding plain bearing elements, by which the brake lever, and the pressure rams are supported on the caliper.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: December 2, 2014
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Johann Baumgartner, Robert Gruber, Aleksandar Pericevic, Steffen Geissler, Robert Trimpe
  • Patent number: 8887875
    Abstract: A caliper body (1) for a disc brake unusually capable of high structural performance and low bulk, said caliper body comprising at least one connection bridge (6) arranged straddling the connection disc of an elongated attachment side portion with an elongated non-attachment side portion; in which said elongated portions have an outer surface (13, 14) opposite the disc substantially inclined and rounded towards the disc in the radially outward direction so that the caliper body (1) viewed in the tangential or circumferential direction has a bulk with a rounded outer surface like a tortoise shell.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: November 18, 2014
    Assignee: Freni Brembo S.p.A.
    Inventors: Pierangelo Gherardi, Marco Caronia
  • Publication number: 20140251737
    Abstract: A disc brake includes a pair of end-side connector parts that connect a pair of cylinder parts across over a disc rotor, and an intermediate connector part that is installed between the end-side connector parts and that connects the pair of cylinder parts across over the disc rotor and brake pads. The brake pads are provided with protrusion segments that are formed at positions that are outer end sides in a rotor radial direction and that protrude in directions separated from middle portions of the brake pads in a rotor rotational direction, and the end-side connector parts are provided with pad engaging faces on which inner regions in the rotor radial direction of the protrusion segments are oppositely disposed and which are formed of the same member as a caliper main body.
    Type: Application
    Filed: March 6, 2014
    Publication date: September 11, 2014
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Keisuke NANRI
  • Patent number: 8789663
    Abstract: A bicycle hydraulic brake clamp includes a clamp, two piston assemblies and a separation board. The clamp has a first slot defined on the middle thereof so that a brake disk is received therein. A second slot and a third slot are respectively defined in two sides of the clamp. A through hole is defined through the clamp and communicates with the third slot. The separation board is fixedly engaged with the through hole via the first slot by a way of welding. The two piston assemblies are respectively installed in the second and third slots via the first slot. The separation board is securely engaged with the through hole so as not only to prevent the separation board from dropping from the clamp by exterior impact, but also to protect the separation board from being damaged by the exterior impact.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: July 29, 2014
    Assignee: Ashima Ltd.
    Inventor: Wayne-Ian Moore
  • Patent number: 8783423
    Abstract: A disc brake having a rotor and a caliper is provided and includes a first and second brake pad situated on the same side of the rotor whereby in a non-braking state the first brake pad is in contact with the rotor and the second brake pad is offset from the rotor. In a light braking state the first pad acts against the rotor with additional force to thereby slow or stop the vehicle. In a heavier braking state both the first and second brake pads act against the rotor to thereby slow or stop the vehicle.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: July 22, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventor: Mark Schrewe
  • Patent number: 8776957
    Abstract: A brake retractor assembly (10) for a vehicle, such as an agricultural vehicle, includes a brake housing (12) and a brake cover (14) defining a friction chamber (16). A brake piston (18) is arranged within the friction chamber (16) and coupled to the brake cover (14) by a bolt (44) including a first end (46) coupled to the brake cover (14) and a second end (48) coupled to the brake piston (18). A portion of the second end (48) passes through the brake piston (18) via a bore (64) defined in the brake piston (18) and is fixedly retained to the brake piston (18). An actuation system (24) is coupled to apply an axial force to the brake piston (18). Activation of the actuation system (24) results in axial movement of the brake piston (18) in a first direction (80). Deactivation of the actuation system (24) results in axial movement of the brake piston in a second direction (82). Axial movement of the brake piston (18) in the second direction (82) is limited by the fixed retention of the bolt to the brake piston.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: July 15, 2014
    Assignee: Deere & Company
    Inventor: Richard N. Knowles
  • Patent number: 8733515
    Abstract: There is provided a caliper body for a two system-type disc brake for a vehicle, which is reduced in size and has an improved air bleeding property by employing a simple structure. In the caliper body for the two-system disc brake for the vehicle, a communication path, which connects cylinder holes for a first brake system, and a first bleeder hole are formed rectilinearly on an outside, in a disc radius direction, of an imaginary line IL1 which rectilinearly connects inner edges, in the disc radius direction, of cylinder holes for a first brake system and a cylinder hole for a second brake system is provided on an outside, in the disc radius direction, of the communication path.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: May 27, 2014
    Assignee: Nissin Kogyo Co., Ltd.
    Inventors: Yoichi Hiramori, Toshihiro Kusano
  • Patent number: 8534428
    Abstract: 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: Grant
    Filed: July 6, 2009
    Date of Patent: September 17, 2013
    Assignee: Shimano Inc.
    Inventors: Takahiro Yamashita, Shinichi Takizawa
  • Patent number: 8479891
    Abstract: A hydraulic brake clamp for bikes includes a clamp, two piston assemblies and a cap. The clamp has a brake disk room defined on the middle thereof so that a brake disk is received therein. An assembling room and a receiving room are respectively defined in two sides of the clamp. The brake disk room, the assembling room and the receiving room are in communication with each other. A connecting hole is defined through the clamp and communicates with the receiving room. The piston assemblies are assembled from the brake disk room to the assembling room and the receiving room. The cap is threaded into the receiving room via the connecting hole for sealing the receiving room and preventing the piston assemblies from dropping out from the connecting hole.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: July 9, 2013
    Assignee: Ashima Ltd.
    Inventor: Wayne-Ian Moore
  • Patent number: 8365878
    Abstract: A hydraulic disc brake caliper housing that includes first and second side portions and first and second end portions that cooperate to define a fluid path defined therein that extends between a fluid inlet and a fluid outlet. The fluid path extends from the fluid inlet, through the second side portion, through the first end portion, through the first side portion and to the fluid outlet.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: February 5, 2013
    Assignee: Shimano Inc.
    Inventors: Shinichi Takizawa, Osamu Kariyama, Kenichi Kikuno
  • Patent number: 8307957
    Abstract: A disk brake for a vehicle having a bracket which is fixed with respect to the vehicle and on which brake linings and at least one brake caliper are mounted so as to be movable in an axial direction is disclosed. The bracket and the brake caliper engage around at least one brake disk, and the brake caliper includes a housing limb with at least one actuating device, a further housing limb with at least one housing finger, and a housing bridge. A spring arrangement which generates an elastic preload between the brake caliper and the bracket is provided in such a way that the preload is aligned substantially perpendicular to a movement direction of the brake caliper. The spring arrangement comprises a spring element and a protective panel.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: November 13, 2012
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Stefan Heinz, Christoph Sander, Uwe Bach, Ralf Sundheim, Roberto Stoka
  • Patent number: 8272484
    Abstract: A hydraulic caliper brake including a housing having a first half and a second half and a bridge connecting the housing halves. Each half of the housing includes a bore having a fluid chamber and a piston therein. The caliper brake also includes a fluid network having an inlet port and a bleed port in the first half of the housing, a first channel extending through the bridge and in fluid communication with the inlet port and the fluid chamber in the second half of the housing, and a second channel extending through the bridge and in fluid communication with the fluid chamber in the second half of the housing and the bleed port. A dual-flow passage is provided and is in fluid communication with the fluid chamber in the first half of the housing and the second channel. The fluid chamber in the first half is not in fluid communication with the first channel.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: September 25, 2012
    Assignee: Ausco Products, Inc.
    Inventors: Brian P. Dennis, Kenneth A. Dodd, Norman D. Crawford, Peter J. Pozivilko
  • Patent number: 8196716
    Abstract: 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: Grant
    Filed: December 30, 2003
    Date of Patent: June 12, 2012
    Assignee: Freni Brembo S.p.A.
    Inventors: Michael Schorn, Giovanni Mario Tironi, Enrico Battista Ongaretti, Paolo Sala
  • Patent number: 7971689
    Abstract: 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: Grant
    Filed: March 28, 2008
    Date of Patent: July 5, 2011
    Inventor: Wayne-Ian Moore
  • Patent number: 7958974
    Abstract: A self-boosting electromechanically actuable disc brake, having an application device for applying the brake pad, which application device has a rotary brake lever and a self-boosting device, wherein the rotary brake lever acts on an actuating plunger which acts on the application-side brake lining directly or via a pressure plate, is characterized in that the actuating plunger is pivotably mounted on the rotary brake lever and on the pressure plate or the application-side brake lining with an intersecting rotational axis.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: June 14, 2011
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Johann Baumgartner, Robert Gruber, Robert Trimpe
  • Patent number: 7958975
    Abstract: A brake caliper on a brake, such as a disc brake includes raised sections, which can be embodied as plateaus. The raised sections are tensioned against each other via a connector device by the introduction of tensile or compression forces. Noises occurring during braking can thus be significantly reduced.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: June 14, 2011
    Assignee: TMD Friction Service GmbH
    Inventors: Reinhard Eisengräber, Kristof Terfloth
  • Patent number: 7942482
    Abstract: What is disclosed is a brake system for a mobile machine, e.g., for a wheel loader, comprising two hydraulic circuits to each of which at least one respective wheel brake cylinder is associated. Control of the wheel brake cylinders is effected through a brake valve arrangement which, in accordance with the invention, is formed by two brake valves each realized with a hydraulic pilot control, wherein the braking pressure at the one brake valve is reported via a control line into a pilot control chamber of the other brake valve.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: May 17, 2011
    Assignee: Bosch Rexroth AG
    Inventor: Hubertus Mies
  • Patent number: 7926625
    Abstract: A disk braking device suppresses warp of friction members and deterioration in reaction at the time of braking, and provides friction members with a uniform service life, where pistons are increased in number to heighten a braking force. A piston mechanism comprises pistons arranged along an outer periphery of a disk plate. The pistons are allotted to a plurality of piston portions that have different cylinder areas s1 and (s2+s3). A pad unit is divided into a plurality of pad unit portions that have different total pressure contact areas p1 and (p2+p3) corresponding to the cylinder areas s1 and (s2+s3).
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: April 19, 2011
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Hideo Kawai, Manabu Abe, Itsurou Migita, Kazuaki Ura, Masatoshi Kurita, Fujio Ikki
  • Patent number: 7849977
    Abstract: An optimized disc brake includes two fixed mountings and one free mounting, and an assembly space optimized brake carrier and corresponding brake lining for a reaction side of the disc brake are provided.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: December 14, 2010
    Assignee: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Robert Gruber, Wlodzimierz Macke, Dietmar Knoop, Georg Kempinger, Wolfgang Pritz
  • Patent number: 7757822
    Abstract: An opposed piston disc brake caliper has a caliper housing arranged for mounting brake shoes on each of opposite sides of a rotor. The rotor in use is disposed between the brake shoes with each brake shoe having a backing plate and a friction lining applied to the backing plate. The caliper housing has side walls extending generally in a plane parallel to a plane of the rotor and on opposite sides of the plane of the rotor which accommodate a piston. The caliper housing has mounting members for engagement with each of the side edges of each backing plate between the radially inner edge and the radially outer edge of the friction lining. The engagement is such as to substantially limit movement of each brake shoe other than in a direction toward or away from the rotor with at least one of the mounting members being removable from the caliper housing to facilitate removal of the brake shoe from the caliper housing.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: July 20, 2010
    Assignee: PBR Australia Pty Ltd.
    Inventor: Keith Clarkson Reeves
  • Publication number: 20100096223
    Abstract: 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: Application
    Filed: October 13, 2009
    Publication date: April 22, 2010
    Applicant: ADVICS CO., LTD.
    Inventors: Satoru ITSUAKI, Shinichi MORITA
  • Publication number: 20100051394
    Abstract: In on embodiment, a brake system of bicycle including left and right brake levers, front and rear wheels, a front disc brake, and a rear disc brake having a first unit and an independent second unit, the brake system includes a hydraulic line interconnected the right brake lever and the first unit; and a Y-shaped hydraulic line having a first branch connected to the left brake lever, a second branch connected to the front disc brake, and a third branch connected to the second unit. Pressing the right brake lever will actuate the first unit via the hydraulic line to brake the rear wheel, and pressing the left brake lever will actuate the front disc brake via the first and second branches to brake the front wheel and actuate the second unit via the first and third branches to brake the rear wheel respectively.
    Type: Application
    Filed: August 26, 2008
    Publication date: March 4, 2010
    Inventor: Szu-Fang Tsai
  • Patent number: 7610997
    Abstract: A brake caliper for a disk brake, in particular for motorcycles and/or bicycles, includes a housing (30) in which a disk space (39) for receiving a brake disk and a brake cylinder (35) for receiving a brake piston (25) are formed. The brake cylinder (35) is connected to the disk space (39) and has, on its side opposite to the disk space (39), an assembly opening (50) through which the brake piston (25) can be inserted into the brake cylinder (35). A closure element (10) closes the assembly opening (50) after the insertion of the brake piston (25) into the brake cylinder (35). A securing element (21) secures the closure element (10) in the assembly opening (50) against forces in the direction of the main axis of the brake cylinder (35).
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: November 3, 2009
    Assignee: Gustav Magenwirth GmbH & Co. KG
    Inventor: Michael Roupp
  • Publication number: 20090236187
    Abstract: A disk brake having a brake caliper, which engages axially in a U shape around a rotatable brake disk is provided. The disk brake includes a caliper bridge, two caliper limbs and at least one actuating device. At least one brake lining is mounted in an axially movable fashion in the brake caliper. The caliper bridge has, in the peripheral direction, at least three substantially axially extending supports, wherein two of the supports are embodied as a main support and one support is embodied as a central support. These supports connect the two caliper limbs and in the process form two windows and axially project beyond the brake disk. The central support projects both beyond the brake disk and beyond the brake lining in the axial direction.
    Type: Application
    Filed: April 10, 2007
    Publication date: September 24, 2009
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Uwe Bach, Ralf Sundheim, Volker van Aken
  • Publication number: 20090200121
    Abstract: A hydraulic disc brake caliper housing that includes first and second side portions and first and second end portions that cooperate to define a fluid path defined therein that extends between a fluid inlet and a fluid outlet. The fluid path extends from the fluid inlet, through the second side portion, through the first end portion, through the first side portion and to the fluid outlet.
    Type: Application
    Filed: September 5, 2008
    Publication date: August 13, 2009
    Applicant: Shimano Inc.
    Inventors: Shinichi TAKIZAWA, Osamu Kariyama, Kenichi Kikuno
  • Publication number: 20090159378
    Abstract: A disc brake having a rotor and a caliper is provided and includes a first and second brake pad situated on the same side of the rotor whereby in a non-braking state the first brake pad is in contact with the rotor and the second brake pad is offset from the rotor. In a light braking state the first pad acts against the rotor with additional force to thereby slow or stop the vehicle. In a heavier braking state both the first and second brake pads act against the rotor to thereby slow or stop the vehicle.
    Type: Application
    Filed: December 21, 2007
    Publication date: June 25, 2009
    Applicant: HONDA MOTOR CO., LTD.
    Inventor: Mark Schrewe
  • Publication number: 20090152056
    Abstract: A disk brake for a vehicle having a bracket which is fixed with respect to the vehicle and on which brake linings and at least one brake caliper are mounted so as to be movable in an axial direction is disclosed. The bracket and the brake caliper engage around at least one brake disk, and the brake caliper includes a housing limb with at least one actuating device, a further housing limb with at least one housing finger, and a housing bridge. A spring arrangement which generates an elastic preload between the brake caliper and the bracket is provided in such a way that the preload is aligned substantially perpendicular to a movement direction of the brake caliper. The spring arrangement comprises a spring element and a protective panel.
    Type: Application
    Filed: May 9, 2007
    Publication date: June 18, 2009
    Inventors: Stefan Heinz, Christoph Sander, Uwe Bach, Ralf Sundheim, Roberto Stoka
  • Publication number: 20090095578
    Abstract: A braking system for a final drive for a wheel assembly of an independently powered wheeled vehicle. The system includes a service brake having a displaceable element actuatable to retard rotation of the individual wheel assembly. A park brake is positioned closely adjacent to the service brake and is actuatable independently of the service brake to displace the displaceable element to retard rotation of the wheel. Both the service brake and park brake are accessible without disturbing an electric motor with which they are associated.
    Type: Application
    Filed: October 15, 2007
    Publication date: April 16, 2009
    Inventor: Mark J. Besler
  • Publication number: 20090071767
    Abstract: A body for a disc brake caliper has a mounting side limb and a non-mounting side limb, each limb housing at least one hydraulic brake cylinder. The body has a peripheral stiffening band that extends about an outer lateral surface of at least one of the limbs. In a preferred embodiment, a peripheral stiffening band extends about an outer lateral surface of each of the limbs. The stiffening band or bands provide stiffness in the body under dynamic braking conditions with a minimum of material. A method of designing and manufacturing a body for a disc brake caliper involves analysing the stiffness of the body under dynamic rather than static braking conditions and producing a caliper body with a desired level of stiffness under dynamic conditions while reducing the amount of material used to a minimum.
    Type: Application
    Filed: July 14, 2008
    Publication date: March 19, 2009
    Inventors: Richard Arnold Bass, Jonathan Paul Tait, John Arthur Heritage
  • Patent number: 7481303
    Abstract: One aspect of the present invention can include a disc brake having a first and second piston capable of pushing a pad towards a disc rotor, and a caliper having a first and second cylinder for housing the first and second pistons. Further, each first and second cylinder includes a bottom and a groove positioned proximate the bottom, the groove on the first cylinder is smaller than the groove on the second cylinder in the axial direction, also the first piston associated with the first cylinder has a smaller allowable inclination angle for the caliper than the second piston.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: January 27, 2009
    Assignee: Advics Co., Ltd.
    Inventor: Yoshiki Matsuzaki
  • Publication number: 20080277212
    Abstract: A service disc brake is provided for a heavy vehicle. The brake includes a brake disc, a first brake pad and a second brake pad arranged on opposite sides of the brake disc, a first displaceable piston and a second displaceable piston which are arranged to act on the first brake pad and the second brake pad, respectively, and an actuator for braking the brake disc. The disc brake includes a third displaceable piston, the second piston and the third piston being connected to each other via a closed space containing a hydraulic fluid. The braking actuator is arranged to act on the first piston and the third piston for displacement of the first piston towards the brake disc and for displacement of the third piston so as to displace the second piston towards the brake disc by the hydraulic fluid in the closed space.
    Type: Application
    Filed: November 24, 2006
    Publication date: November 13, 2008
    Applicant: VOLVO LASTVAGNAR AB
    Inventor: Owe Johansson
  • Publication number: 20080264738
    Abstract: An opposed piston disc brake caliper has a caliper housing arranged for mounting brake shoes on each of opposite sides of a rotor. The rotor in use is disposed between the brake shoes with each brake shoe having a backing plate and a friction lining applied to the backing plate. The caliper housing has side walls extending generally in a plane parallel to a plane of the rotor and on opposite sides of the plane of the rotor which accommodate a piston. The caliper housing has mounting members for engagement with each of the side edges of each backing plate between the radially inner edge and the radially outer edge of the friction lining. The engagement is such as to substantially limit movement of each brake shoe other than in a direction toward or away from the rotor with at least one of the mounting members being removable from the caliper housing to facilitate removal of the brake shoe from the caliper housing.
    Type: Application
    Filed: April 16, 2008
    Publication date: October 30, 2008
    Inventor: Keith Clarkson Reeves
  • Patent number: 7404472
    Abstract: An opposed piston disc brake caliper has a caliper housing arranged for mounting brake shoes on each of opposite sides of a rotor. The rotor in use is disposed between the brake shoes with each brake shoe having a backing plate and a friction lining applied to the backing plate. The caliper housing has side walls extending generally in a plane parallel to a plane of the rotor and on opposite sides of the plane of the rotor which accommodate a piston. The caliper housing has mounting members for engagement with each of the side edges of each backing plate between the radially inner edge and the radially outer edge of the friction lining. The engagement is such as to substantially limit movement of each brake shoe other than in a direction toward or away from the rotor with at least one of the mounting members being removable from the caliper housing to facilitate removal of the brake shoe from the caliper housing.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: July 29, 2008
    Assignee: PBR Australia PTY Ltd
    Inventor: Keith Clarkson Reeves
  • Publication number: 20080116021
    Abstract: One aspect of the present invention can include a disc brake having a first and second piston capable of pushing a pad towards a disc rotor, and a caliper having a first and second cylinder for housing the first and second pistons. Further, each first and second cylinder includes a bottom and a groove positioned proximate the bottom, the groove on the first cylinder is smaller than the groove on the second cylinder in the axial direction, also the first piston associated with the first cylinder has a smaller allowable inclination angle for the caliper than the second piston.
    Type: Application
    Filed: October 30, 2007
    Publication date: May 22, 2008
    Inventor: Yoshiki Matsuzaki
  • Patent number: 7178640
    Abstract: A brake actuator includes an annular housing (10b) having first and second opposite radial faces (A and B). Cavities are formed in the housing (10b), some opening onto face (A) and some onto radial face (B). Two pistons (16) are disposed in each of the cavities and are movable under the influence of fluid pressure exerted from within the respective cavities to a braking position where the pistons (16) extend axially away from the cavity. The piston (16) bear against a backing plate of respective brake pads (68) forcing the brake pads (68) against brake discs (54 and 56). By providing cavities on both faces (A and B) of the housing (10b), an actuator can simultaneously apply brake pads to two spaced apart rotating discs (54 and 56). A plurality of actuators can be coupled together to act on a plurality of axially spaced apart brake discs to form a multi-pad multi-brake system.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: February 20, 2007
    Assignee: Safe Effect Pty Ltd.
    Inventors: Stan Nowak, Dorota H. Kieronska, Vin C. Morley
  • Patent number: 6910555
    Abstract: A caliper body for a fixed-caliper disk brake which can be associated with a disk in a manner such that its distance from the disk is kept unchanged and which is unusually strong and capable of a silent braking action comprises a first half-body which can house first means for generating the braking force and which can be arranged facing a first braking surface of one side of the disk, and a second half-body which can house second means for generating the braking force and which can be arranged facing a second braking surface of an opposite side of the disk, the first and second half-bodies being connected, by fixing means, to bridge elements which can be arranged astride the disk; the bridge elements are portions of a single element for connecting and supporting the half-bodies.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: June 28, 2005
    Assignee: Freni Brembo S.p.A.
    Inventors: Alessandro Ciotti, Cristian Crippa
  • Patent number: 6857509
    Abstract: A braking unit has (1) at least two brake shoes, each with a friction lining; (2) at least one brake disk rotor each of the outer surfaces of the brake disc rotor at least partially forming a friction surface of a ceramic-metal composite material for each friction lining respectively; and (3) at least one brake application device that acts on the brake shoes during braking operation. The friction linings of the brake shoes cover at least 15% of the friction surface of the brake shift rotor. The at least one brake application device is arranged so that the pressure which acts on the brake shoes during the braking operation acts essentially evenly on the friction surface.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: February 22, 2005
    Assignee: DaimlerChrysler AG
    Inventors: Antonio Braiato, Andreas Pachner, Hans-Georg Riedel, Detlef Sokolowsky, Björn Spangemacher
  • Patent number: 6837342
    Abstract: An actuator comprises a housing (8) which contains a screw mechanism (9) and a motor (10) which is drivably connected to the screw mechanism (9), said screw mechanism providing a linear movement in response to a rotational movement of the motor, and comprising a screw (12) and a nut (13) one of which is supported rotatably with respect to the housing (8). The linearly displaceable member of the screw mechanism is drivingly connected to a pump mechanism for providing a flow of medium.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: January 4, 2005
    Assignee: SKF Engineering & Research Centre B.V.
    Inventors: Armin Herbert Emil August Olschewski, Hendrikus Jan Kapaan, Clair Druet, Thomas Wilhelm Fucks, Manfred Antensteiner, Andries Christiaan Rinsma, Jiri Gurka, Alexander Jan Carel De Vries
  • Publication number: 20040231931
    Abstract: A brake actuator includes an annular housing (10b) having first and second opposite radial faces (A and B). Cavities are formed in the housing (10b), some opening onto face (A) and some onto radial face (B). Two pistons (16) are disposed in each of the cavities and are movable under the influence of fluid pressure exerted from within the respective cavities to a braking position where the pistons (16) extend axially away from the cavity. The piston (16) bear against a backing plate of respective brake pads (68) forcing the brake pads (68) against brake discs (54 and 56). By providing cavities on both faces (A and B) of the housing (10b), an actuator can simultaneously apply brake pads to two spaced apart rotating discs (54 and 56). A plurality of actuators can be coupled together to act on a plurality of axially spaced apart brake discs to form a multi-pad multi-brake system.
    Type: Application
    Filed: May 26, 2004
    Publication date: November 25, 2004
    Inventors: Stan Nowak, Dorota H. Kieronska, Vin C. Morley