By Inclined Surface (e.g., Wedge, Cam Or Screw) Patents (Class 188/72.7)
  • Publication number: 20080121473
    Abstract: The present invention relates to a parking brake system using a tapered roller in ramp-typed brake caliper for vehicles, in which because a tapered roller in ramp-typed caliper that generates parking brake force through axial force in the operation of a parking brake system is mounted, stable axial force is generated and relatively large contact areas are obtained by axial surface contacts by tapered rollers, so that it does not require forging with very high precision that is required for ball in ramp-typed ramps with point contact, thus the manufacturing process comes In be easy,
    Type: Application
    Filed: December 26, 2006
    Publication date: May 29, 2008
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventor: Kyung Soo KANG
  • Patent number: 7374026
    Abstract: A parking brake assembly for an air actuated disc brake includes an operating shaft for amplifying a force supplied by an air actuator and transmitting the force to brake pads. The operating shaft is pivotable about an axis between a rest position at which a braking force is not applied and an actuated position at which the braking force is applied. An abutment surface on the operating shaft is selectively engageable by a complementary latch of the assembly to retain the operating shaft in the actuated position and thereby apply the parking brake. The abutment surface has a helical configuration.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: May 20, 2008
    Assignee: Meritor Heavy Vehicle Braking Systems (UK) Limited
    Inventors: Martin Pors Taylor, Mark Anthony Norman
  • Patent number: 7370735
    Abstract: In a vehicle brake having a brake piston accommodated in a housing, a blocking device for securing the brake piston inside the housing and an actuating device for controlling the blocking device, it is provided that the brake piston together with the housing delimits a fluid chamber, which is chargeable with hydraulic fluid, so that the brake piston for actuating the vehicle brake is displaceable hydraulically inside the housing along a piston longitudinal axis, that moreover the blocking device comprises a ramp arrangement and a blocking element that is displaceable relative to the housing, and that by means of the actuating device the blocking element in interaction with the ramp arrangement for securing the brake piston inside the housing is displaceable and connectable to the brake piston.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: May 13, 2008
    Assignee: Lucas Automotive GmbH
    Inventors: Leo Gilles, Marcus Janson, Ralf Leiter, Gregor Poertzgen, Ralf Erben, Karl-Heinz Schaust, Manfred Meyer
  • Patent number: 7367433
    Abstract: A disc brake for a commercial vehicle, operated pneumatically or by electric motor, comprising a brake caliper, an application device and at least one adjuster device arranged with the brake caliper, is characterized in that both adjuster elements of the at least one adjuster device are fixed in a non-rotating manner to a common connector plate in the region thereof facing the brake lining and/or a single- or multi-piece thermal insulation layer is at least partly applied to the connector plate or parts connected thereto on the side thereof facing the relevant braking lining to form a region like a pressure piece.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: May 6, 2008
    Assignee: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Dieter Bieker, Johann Baumgartner, Robert Trimpe
  • Patent number: 7364021
    Abstract: The invention relates to a wheel brake for a motor vehicle including an electromechanical actuating device and a hydraulic actuating device, which are redundant. In this way, the likelihood of failure of the wheel brake is reduced. A self-boosting device increases a braking force of the wheel brake, so that an (underpressure) brake booster can be dispensed with. Wheel slip control is possible in a simple way by hydraulic actuation of the wheel brake and superposition of a braking force regulation on the electromechanical actuating device. The wheel brake includes a support member on the side of a friction brake lining opposite a brake body. The support member has two wedge inclines and a flattened middle portion on a side opposite the friction brake lining. The pressure fluid actuating device has a tappet resting on the flattened middle portion.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: April 29, 2008
    Assignee: Robert Bosch GmbH
    Inventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann
  • Publication number: 20080087505
    Abstract: In a cam actuated brake, an adjustable cam disposable intermediate a pair of following surfaces on first ends of a pair of arms. The arms being rotatable about parallel axes and having a pair of opposing brake surfaces at second ends. The cam comprises a body having a first and second opposite cam surfaces adapted to engage the following surfaces and a bore intermediate the cam surfaces and a piston receivable in the bore. The piston is releasably coupled to the bore. The cam further comprises an adjuster for varying the position of the piston in the bore. The piston may be engaged by an actuator so as to wedge the cam between the following surfaces of the arms so as to rotate the first and second arms about their respective axes thereby frictionally engaging an object between the braking surfaces.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 17, 2008
    Inventor: Jacob Kobelt
  • Publication number: 20080087504
    Abstract: In a braking device having a pair of opposed arms rotatable about parallel axes having first ends coupleable to opposing brake pads to brake a disk therebetween, a cam follower connected to the second ends and retainable against a cam is disclosed. The braking device further including an actuated cam having a pair of opposed flanges disposed intermediate the cam followers. The flanges include a cam surface and back surfaces. The cam follower comprises a cam following surface for slidably engaging the cam surface and retaining portions extending from the cam follower around the flanges to engage the back surfaces to retain the cam following surface against the cam surface.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 17, 2008
    Inventor: Jacob Kobelt
  • Patent number: 7344007
    Abstract: The invention relates to a disk brake provided with a brake caliper comprising a brake disk, a sliding member which can be displaced in a vertical manner in relation to the surface of the brake disk in the brake caliper and can be engaged against the brake disk, and a clamping device comprising a rotary lever and a rotational body. In one embodiment of the invention, the rotary lever comprises a domed-shaped control surface whereon the rotational body is arranged in a rotational contact position. By pivoting said rotary lever in a radial segment bearing, the rotational body and the rotary lever modify their position, in relation to each other, such that the sliding member is displaced in order to apply braking force. The rotational body then carries out a full rotational movement on the control surface.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: March 18, 2008
    Assignee: Haldex Brake Products AB
    Inventor: Lars Severinsson
  • Patent number: 7341128
    Abstract: A brake rigging for a railway vehicle having a singular truck-mounted brake apparatus for generating a braking force and a plurality of disk caliper assemblies for applying the braking force to each wheel. Wedge-like elements are rigidly attached to the braking beams of the truck-mounted brake apparatus and engage a pair of rollers that are pivotably mounted on corresponding ends of a pair of pivoted levers disposed within a disk caliper assembly. The wedge-like elements transmit a generated braking force to the levers, the rocking of which in opposite directions is effective to force the brake shoes against the respective opposite sides of a disc brake rotor to exert the braking force thereon.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: March 11, 2008
    Assignee: WABTEC Holding Corp.
    Inventors: Michael E. Ring, James M. Zemyan, Michael J. Moriarity
  • Patent number: 7331432
    Abstract: Axial grooves 8e and circumferential groove 8f intersecting with he axial grooves are provided in a cylinder bore 8e. A fixed-side cam plate 12 has anti-rotation projections 12c, which are projected from the fixed-side cam plate 12 and inserted into the axial grooves 8e, and fastening grooves 12d, which are formed at circumferential areas of the bottom side of the fixed-side cam plate 12 at a circumferential side of each of anti-rotation projections 12c. The housing 16 has engagement ribs 16e which are projected from the housing 16 to be engaged with the axial grooves 8e, and fastening pieces 12f, which are formed at a circumferential side of each of the engagement ribs 16e, the fastening pieces 12f being fitted in the fastening grooves 12d.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: February 19, 2008
    Assignee: Nissin Kogyo Co., Ltd.
    Inventor: Akifumi Watada
  • Publication number: 20080000731
    Abstract: A disc brake caliper assembly for moving brake pads straddling the brake disc against each side of a brake disc comprises two tongs pivotably supported. The tongs have brake heads and pads at one end and power nut support pins journaled at the other end. The power nuts are pivotally supported from the power nut support pins. A power screw extends between the tongs and has external threaded ends threaded in the power nuts such that rotation of the power screw will force the power nuts apart thus causing the brake pads to engage the brake disc.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 3, 2008
    Inventors: James T. Dewberry, Charles Alleman, Lee Lipford, Benjamin J. Smith, Peter D. Mathern
  • Patent number: 7311180
    Abstract: An electromechanically actuatable self-boosting disk brake in which a friction brake lining is guided displaceably with a guide whose angle to the brake disk is adjustable via an electric motor to attain brake reinforcement. The angle of the guide is adjusted independently of an actuating device with which the friction brake lining is pressed against the brake disk.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: December 25, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Dietmar Baumann, Hanniel Schmidt, Herbert Vollert, Frieder Keller
  • Publication number: 20070227838
    Abstract: An electric disk brake that can be operated and inspected before being assembled and that can be assembled easily. A piston, a ball ramp mechanism, a differential reduction mechanism, and a pad wear compensation mechanism are integrated to form a piston unit. A motor, a resolver, and a drive controller are integrated to form a motor/controller unit. The piston unit is inserted into a cylinder of a caliper body, and the motor/controller unit is mounted on the caliper body to assemble an electric caliper. Before being incorporated into the electric caliper, the motor/controller unit can be operated and easily inspected for any defect by applying an electric current to the motor/controller unit.
    Type: Application
    Filed: March 19, 2007
    Publication date: October 4, 2007
    Inventors: Hiroshi Shigeta, Takayasu Sakashita
  • Publication number: 20070209888
    Abstract: A speed reducer 32 has an eccentric rotating member 56 which rotates along with a motor shaft 55 of an electric motor 11, an outer gear 57 which is rotatably supported by the outer circumference of the eccentric rotating member 56, an inner gear 58 which is fixedly disposed so as to be coaxial with the motor shaft 55 so as to engage with the outer gear 57, an output member 59 which is connected to an input member 37 of the motion converting mechanism 22 disposed so as to be coaxial with the motor shaft 55 so as to be not relatively rotatable about the input member 37, and an Oldham mechanism 60 which is disposed between the outer gear 57 and the output member 59 so as to transmit only a rotational component of the outer gear 57.
    Type: Application
    Filed: March 9, 2007
    Publication date: September 13, 2007
    Applicant: NISSIN KOGYO CO., LTD.
    Inventor: Osamu ADACHI
  • Patent number: 7261189
    Abstract: A braking system of a rail vehicle includes a parking brake device having a gearing. The gearing converts a rotating movement initiated by rotation-actuating devices into an application of movement of at least one pressure-medium-operated cylinder piston drive. Also, included is at least one universal-joint shaft connecting the rotation-actuating devices with a gearing input of the gearing. The gearing input is disposed in the direct vicinity of the at least one piston cylinder drive and is connected to a nut screw drive converting a rotating movement at a gearing output of the gearing to a linear movement of a piston of the at least one cylinder piston drive.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: August 28, 2007
    Assignee: Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH
    Inventors: Albert Kerscher, Erich Fuderer
  • Patent number: 7258206
    Abstract: An electronically controlled disc brake with self-servo effect comprises a ramp plate provided with a brake pad for engagement with a brake disc, an actuator for applying a control force on the ramp plate substantially transverse to the brake disc, a ramp bridge, and rollers movable in ramps in surfaces facing each other of the ramp plate and the ramp bridge. The arrangement of these members is such that a movement of the ramp plate in the tangential direction of the brake disc will cause it to move towards or away from the brake disc.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: August 21, 2007
    Assignee: Haldex Brake Products AB
    Inventor: Lars MaHis Severinsson
  • Patent number: 7216940
    Abstract: An apparatus engageable with a railway vehicle truck-mounted braking system for compensating for truck bolster movement which includes at least one force transmitting wedge member movable in a reciprocating motion by a pneumatic actuator. The at least one force transmitting wedge member engage rollers rotateably attached to a return push rod member disposed within the truck-mounted braking system for extending the return push rod member to reduce brake shoe clearance prior to brake shoe application. A method for compensating for truck bolster movement also includes fully pressurizing a wedge actuator prior to pressurizing the main brake apparatus actuator. Depressurization of the system returns the force transmitting wedges and return push rod to their original positions upon completion of brake application, subsequently increasing brake shoe clearance for allowable truck bolster movement.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: May 15, 2007
    Assignee: Wabtec Holding Corp.
    Inventor: Howard Sommerfeld
  • Patent number: 7188710
    Abstract: In an automotive vehicle braking system, a hydraulic brake actuator includes a wedge for locking a hydraulic piston in a brake position for purposes of applying a park brake. To apply the park brake, hydraulic pressure is increased to advance the piston to urge the brake pads against the rotor. With the piston in the brake position, an electrical solenoid is energized to advance the wedge to engage the piston. The wedge includes an inclined surface that contacts an inclined surface connected to the piston or the housing, with sufficient frictional force to maintain the wedge in the advanced position without requiring hydraulic pressure or electrical power. Thus, the park brake remains applied even when the vehicle is turned off.
    Type: Grant
    Filed: February 9, 2005
    Date of Patent: March 13, 2007
    Assignee: Delphi Technologies, Inc.
    Inventors: David F. Reuter, Gary C. Fulks
  • Patent number: 7172056
    Abstract: A disk brake having a first friction brake lining, which for braking can be pressed against a brake disk by pivoting of a support lever. A brake caliper is embodied as a floating caliper and an adjusting device is provided with which a second friction brake lining is adjustable transversely to the brake disk. In this way, a support angle (?) and thus a magnitude of the self-boosting of the disk brake can be varied.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: February 6, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann
  • Patent number: 7143873
    Abstract: The present invention relates to a motor vehicle brake system, having at least one first and at least one second electromechanical wheel brake (10), which each comprise an electric actuator for generating an actuating force and a self-boosting device for automatically boosting the actuating force generated by the actuator in order to press a friction element against a rotatable component (14) of the wheel brake (10) that is to be braked, wherein each self-boosting device comprises a wedge (18), which is supported against an associated abutment (22) and has at least one wedge face (20, 20?) disposed at an angle of slope (?). In order to realize a parking brake function, the self-boosting device of the first wheel brake comprises at least one wedge face (20), which is used to boost the force in brake operations during forward travel, and the self-boosting device of the second wheel brake comprises at least one wedge face (20?), which is used to boost the force in braking operations during reverse travel.
    Type: Grant
    Filed: April 28, 2003
    Date of Patent: December 5, 2006
    Assignee: Estop GmbH
    Inventors: Antonio Pascucci, Henry Hartmann, Martin Schautt
  • Patent number: 7124861
    Abstract: A brake (10) having application for a linear or rotational motion device includes a housing (120) in which a first piston (140), a wedge (142) and a second piston (144) cooperate to engage a friction facing (136) through a plurality of rollers (152, 154, 156, 158). The three part piston assembly (148) allows a braking action and prevents torsional forces that are non-axial to the axis of the first piston (140) and second piston (144). The pistons (140, 144) are biased by compression springs (176) and may be actuated by a fluid.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: October 24, 2006
    Assignee: Nexen Group, Inc.
    Inventor: Jeffrey M. Maher
  • Patent number: 7114600
    Abstract: A brake device for a motor vehicle having a friction first element with a first face that is pressed against a first face of a second element secured to a wheel of the motor vehicle during a brake application and an third element for applying a braking force bearing via a first end against a second face of the friction first element that is opposite from the first face of the friction first element. The brake device including an amplifier arrangement with a first part separated from a second part by a mutual and a tiltable plane containing a bearing surface located between the friction first element and the application third element relative to a plane for the first face of the second element. The amplifier arrangement rotating applied during a brake application to modify the pressing of the first face against the second face on the friction first element.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: October 3, 2006
    Assignee: Robert Bosch GmbH
    Inventor: Jean-Pierre Boisseau
  • Patent number: 7080717
    Abstract: In an elevator emergency braking apparatus, a braking device main body has a main body braking surface facing a main rope and positioned at a first side of a main rope array, and a tapered surface facing the main body braking surface on an opposite side of the main rope array. An intermediate braking piece is disposed between mutually-adjacent main ropes inside the braking device main body. The intermediate braking piece is displaceable in a direction to be placed separably in contact with the main body braking surface. A wedge member is disposed between the tapered surface and the main rope array. The wedge member is separated from the main ropes during normal operation, and wedged between the tapered surface and the main ropes during braking.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: July 25, 2006
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Kazumasa Ito
  • Patent number: 7040463
    Abstract: An electromechanically actuated disk brake with mechanical self-boosting includes an automatic wear readjusting device, which can for instance have a positive-engagement detent device. An increased air clearance caused by wear of friction brake linings is prevented by the invention, which thus also prevents an increase in the displacement of the friction brake lining in the direction of rotation of the brake disk when the disk brake is actuated in order to attain the self-boosting.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: May 9, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik
  • Patent number: 7021432
    Abstract: A park brake linkage includes a pivotable park brake actuating handle, a park brake bell crank rotatably mounted on a cross shaft, an arm extending radially from the park brake bell crank, and a single connector between the handle and the firs arm to transmit pivoting movement of the handle to rotational movement of the park brake bell crank. A second arm may extend radially and laterally from the park brake bell crank, which may be used to turn a left brake bell crank and a right brake bell crank, each of which may be secured to a separate brake camshaft. Each camshaft has a cam lobe extending therefrom to apply a brake.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: April 4, 2006
    Assignee: Deere & Company
    Inventors: William Burt Rodriguez, Harry Kay Voelp, IV
  • Patent number: 6997290
    Abstract: In a disc brake (10) having a disc (16) and a brake shoe (82) movable towards and away from a friction surface (86) provided on one face of the disc (16), there is provided a parking brake (22a/22b) having a pushing member (44a/44b) for moving the brake shoe (82) towards and away from the friction surface (86) of the disc (16). The parking brake (22a/22b) further includes a cam (36a/36b) displaceable between a first position in which the cam (36a/36b) forces the pushing member (44a/44b) against a biasing force acting thereon to maintain the brake shoe (82) in friction engagement with the disc (16) and a second position in which the pushing member (44a/44b) is free to move in a direction away from the disc (16) to release the brake shoe (82) from the friction surface (86) of the disc (16). A piston and cylinder arrangement (28) is provided to displace the cam (36a/36b) between its first and second positions.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: February 14, 2006
    Assignee: NewTech Group International Inc.
    Inventors: André Juneau, Gérard Bouffard
  • Patent number: 6997291
    Abstract: A disc brake for a vehicle having a housing with a cavity therein that is divided by a thrust plate into a fluid chamber and an atmospheric chamber. A converter located in the fluid chamber includes a fixed reaction plate and a sliding plate that are separated by a plurality of balls located in variable depth grooves in the sliding plate and a reaction plate. A rotary input applied to an input shaft caused the sliding plate to rotate and move linearly as the balls move within the grooves to provides a force that acts through the thrust plate to moves a piston that is located in the atmospheric chamber to effect a mechanical brake application. Pressurized fluid supplied to the fluid chamber acts on the thrust plate that moves thrust plate and moves the piston to effect a hydraulic brake application.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: February 14, 2006
    Assignee: Robert Bosch GmbH
    Inventor: Jean-Pierre Boisseau
  • Patent number: 6994191
    Abstract: A vehicle parking brake system pneumatically actuates an air cylinder to mechanically lock a wheel brake in an applied position in response to a parking demand request. The air cylinder includes an extendable shaft that supports a lock member. When a parking demand request is initiated by moving a hand control, an air chamber is pressurized with air from a parking reservoir via a valve assembly to apply the wheel brake. Air pressure is released from the air cylinder and the lock member is moved into engagement with a brake component to lock the wheel brake in the applied condition. The wheel brake remains locked even if pressure is released from the air chamber. When a release command is initiated, the air cylinder is pressurized and the lock member is moved out of engagement with the brake component.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: February 7, 2006
    Assignee: ArvinMeritor Technology, LLC
    Inventors: Denis John McCann, Dennis A. Kramer
  • Patent number: 6991071
    Abstract: A wedge-operated brake apparatus includes a piston for generating a braking force when axially driven, an actuator for generating a linear brake-actuating input, and a wedge transmission mechanism for converting the linear brake-actuating input into a brake-actuating output in the axial direction of the piston. The brake-actuating output is transmitted to the piston so as to drive the piston to thereby generate a braking force. The wedge transmission mechanism includes a first plate member which moves together with the piston, a second plate member disposed in opposition to the first plate member and fixedly secured to a housing, a wedge member disposed between the first and second plate members and engaging respective engaging surfaces of the first and second plate members via rollers, and a holder for rotatably holding the rollers and holding the wedge member while allowing linear movement of the wedge member.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: January 31, 2006
    Assignee: Advics Co., Ltd.
    Inventors: Takashi Murayama, Daizo Oba
  • Patent number: 6991072
    Abstract: A brake device for the rotor of a helicopter, the device associating a mechanism having a disk and a manual control for main braking of the rotor, and a mechanism for secondary braking of the rotor under strong wind. The secondary braking device includes a secondary lever hinged to the body and capable of being actuated against secondary return elements to drive a bearing finger against a main lever of the main brake mechanism and cause the jaws of the mechanism to move correspondingly towards each other so that the secondary lever actuates the main lever in order to amplify the clamping forces applied to the disk by the jaws in comparison with the forces they exert when driven by the main lever alone.
    Type: Grant
    Filed: December 14, 2004
    Date of Patent: January 31, 2006
    Assignee: Eurocopter
    Inventor: Michel Bonfils
  • Patent number: 6986411
    Abstract: An electromechanical brake has an electrical actuator which generates an actuation force and acts on at least one friction member in order to press said member to elicit a friction force against a rotational component, which is to be braked, of the brake. A self-boosting device is arranged between the friction member and the electrical actuator, said device serving to self-boost the actuation force generated by the electrical actuator, and having at least one wedge (12), which has a wedge surface (14) arranged at a wedge angle a and supported on a corresponding counter bearing (16). When the brake is actuated, the electrical actuator displaces the wedge (12) relative to the counter bearing (16) in an actuation direction (x) to press the friction component against the component, which is to be braked, of the brake.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: January 17, 2006
    Assignee: ESTOP GmbH
    Inventors: Martin Schautt, Antonio Pascucci, Henry Hartmann
  • Patent number: 6978868
    Abstract: The invention relates to an electromechanical brake (10), especially for vehicles, comprising an electrical actuator generating an actuation force and acting upon at least one friction member (16) in order to press said member to elicit a frictional force against a rotational component (14), which is to be braked, of the brake. The invention also comprises a self-boosting device arranged between the friction member (16) and the electrical actuator, said device serving to self-boost the actuation force generated by the electrical actuator. The invention further comprises at least one wedge (18) with an angle of inclination ? that is supported on a corresponding counter bearing (22). In order to improve the adjustability of said brake (10), the electrical actuator has two drive mechanisms (34, 34?) which act upon the wedge (18) and can work against each other to generate the actuation force with the purpose of zero backlash actuation of the brake (10). In the range of low actuation forces, i.e.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: December 27, 2005
    Assignee: eSTOP GmbH
    Inventor: Martin Schautt
  • Patent number: 6971484
    Abstract: A ball ramp mechanism constituting a force transmission converting mechanism is inserted into a cylinder of a caliper body and a relative rotation angle thereof is restricted to a predetermined range. Further, by successively assembling a piston head, a ramp plate and a ball and a screw shaft member constituting the ball ramp mechanism, a coil spring and an end plate in this order and by catching the end plate by a slit of a piston case in a state of flexing the coil spring, respective parts are elastically connected and assembled by the spring.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: December 6, 2005
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventor: Kazuhiro Sekiguchi
  • Patent number: 6971485
    Abstract: A locking mechanism for a disc brake that retains a clamping force that holds first and second friction members into engagement with a rotor to sustain a brake application. The locking mechanism is characterized by a first threaded member integrally attached to a piston located in a bore. The piston is moved within the bore to establish a clamping force and is prevented from rotating with respect to the bore by means of anti rotation members associated with the piston. A second threaded member rotates on the first threaded member with movement of the piston. A third member is moved into contact with the second threaded member to prevent rotation of the second threaded member and retaining clamping force on the friction members to affect a parking brake application.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: December 6, 2005
    Assignee: Robert Bosch GmbH
    Inventor: William E. Sherman II
  • Patent number: 6968928
    Abstract: 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: Grant
    Filed: January 2, 2003
    Date of Patent: November 29, 2005
    Assignee: Dana Corporation
    Inventor: Daniel E. Banks
  • Patent number: 6962244
    Abstract: The present invention concerns a brake mechanism of a disc brake received in a caliper and a method for controlling the force amplification for the brake mechanism. The brake mechanism comprises a lever actuated by a brake actuator. The lever is acting on a cross bar by means of an intermediate part. The lever and the intermediate part have a line of contact moving along a circular arc during an application stroke of the brake mechanism. The cross bar of the brake mechanism is closely guided and is only moveable in the thrust direction and in the tangential direction of the brake disc. The force amplification of the brake mechanism is adapted to the force characteristics of the brake actuator.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: November 8, 2005
    Assignee: Haldex Brake Products AB
    Inventors: Anders Örtegren, Stefan Sandberg
  • Patent number: 6957723
    Abstract: The invention relates to an electromechanical brake with self-boosting by means of a wedge mechanism. An actuating force is exerted on the friction brake lining via toothing sets that mesh with one another. By means of an engagement angle of the toothing sets, a favorable force introduction angle of the actuating force on the friction brake lining can be attained. In addition, by using a nonround gear wheel and/or a non-straight rack as the toothing sets, flaring of a caliper upon braking and an infeeding motion of the friction brake lining transversely to a brake disk can be compensated for.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: October 25, 2005
    Assignee: Robert Bosch GmbH
    Inventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik
  • Patent number: 6938736
    Abstract: An electric parking brake mechanism characterized in an electric parking brake for pressing a friction member to a braked member via a force transmission converting mechanism for converting a rotational movement of an electric motor to a linear movement, including an input shaft connected to a side of the electric motor, an output shaft connected to a side of a brake mechanism for pressing the friction member to the brake member and a cam mechanism interposed between the input shaft and the output shaft, the cam mechanism is provided with a plurality of cam members and each having a cam face having a radius gradually increasing relative to a rotational center and in driving only a side of the output shaft, rotation of the output shaft is hampered by operating all of the plurality of cam members to constitute sides of large diameters.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: September 6, 2005
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventor: Kimio Takahashi
  • Patent number: 6938737
    Abstract: A brake assembly including a brake pad; a selectively movable rotor, a backing plate which is coupled to the brake pad, at least a first roller which is coupled to the backing plate, a caliper, at least a second roller which is coupled to the caliper, a wedge member which is positioned between and which engages the at least first and the at least second roller, and a motor which is coupled to the wedge member and which selectively moves the wedge member, effective to brake a selectively movable assembly.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: September 6, 2005
    Assignee: Ford Global Technologies, LLC
    Inventor: Dale Lee Hartsock
  • Patent number: 6932198
    Abstract: 25A brake assembly (10) which provides a controllably varying amount of self-energization by the dynamic adjustment of the position of a wedge member (22) which is based upon a measured amount of friction which exists between a pad assembly (14) and a rotor (12).
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: August 23, 2005
    Assignee: Ford Global Technologies, LLC
    Inventor: Minh Trac Trinh
  • Patent number: 6899202
    Abstract: A novel brake assembly is provided for a bicycle. The assembly is composed of an arrangement of a pair of brake pads each connected to a rod member in turn guided for axial movement by a base fixed on the bicycle frame. A bifurcated control cable actuates wedge members causing movement of the pads against a wheel rim. Return springs on the rod members cause the assembly to return to the original non-braking position in response to release of the control cable.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: May 31, 2005
    Inventor: John McIntyre
  • Patent number: 6820730
    Abstract: An adjuster assembly for compensating for brake lining wear in a brake unit. The brake unit has a housing for accommodating the adjuster assembly, a brake lever journalled to the housing, and a force transmitter for transmitting displacement of the brake lever to at least one brake lining. The adjuster assembly includes a support shaft, sensing means for cooperation with the brake lever, a drive ring assembly cooperating with the sensor, and an adjuster gear. The adjuster gear cooperates with the drive ring assembly. To prevent unwanted release of the adjuster assembly, the engagement surface is provided with rotation a rotation preventer adapted for releasable engagement with engagement member cooperating with the housing for preventing rotation of the transmission ring assembly in one direction.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: November 23, 2004
    Assignee: Volvo Lastvagnar AB
    Inventor: Dan Angerfors
  • Patent number: 6802402
    Abstract: A braking device that can be released electromagnetically exhibits at least one brake shoe (20), which is pressed against a braking area by the force of a brake spring (14) in order to brake a linear or rotary motion. A magnet system exhibits a coil (1) and an armature (4), while current fed to the coil (1) causes the armature (4) to move against the force exerted by the brake spring (14), with the result that the brake shoes (10) is able to rise from the braking area (13) and thus release the brake. To achieve a high braking force with a magnet system of small structural dimensions the brake force of the brake spring (14) is transmitted from the armature (4) to the brake shoes (10) by at least one pressure element (5) with diagonal wedge areas (7, 8).
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: October 12, 2004
    Assignee: Kendrion Binder Magnete GmbH
    Inventors: Edmund Bausch, Joachim Hubrich
  • Publication number: 20040178027
    Abstract: An electromechanical brake assembly 10 having a pair of selectively movable and dissimilar self energization wedge members 24, 26 which are respectively and independently controlled by motors 30, 34, and which have respectively dissimilar angles of inclination 60, 62, thereby providing a controllably varying amount of self energization.
    Type: Application
    Filed: February 13, 2004
    Publication date: September 16, 2004
    Applicant: Ford Global Technologies, Inc.
    Inventor: Dale Lee Hartsock
  • Patent number: 6789598
    Abstract: A lift lock for a blind is disclosed to include a casing holding a guide wheel, balls respectively received in respective sliding grooves around one side of the guide wheel, a shaft inserted through the casing and coupled to a lift rod of the blind, and a spring member sleeved onto the shaft for forcing an engagement portion of the shaft into engagement with a positioning opening of the casing. When the torque inputted into the lift rod surpassed the friction resistance between the casing and the shaft, the balls force the shaft to disengage the engagement portion from the positioning opening of the casing for enabling the lift rod to be freely rotated. When the input torque of the lift rod dropped, the spring member returns the shaft into engagement with the positioning opening of the casing to stop the lift rod in position.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: September 14, 2004
    Assignee: Nien Made Enterprise Co., LTD
    Inventor: Ming Nien
  • Publication number: 20040159509
    Abstract: An electric caliper having a housing mounted adjacent a rotatable disc. First and second force applying elements support a friction element between the housing and the rotatable disc. An electric actuator is mounted in the housing and is operatively connected to the first and second force applying elements. The electric actuator is operable to move the first and second force applying elements and the friction element toward, and away from, the disc and cause the friction element to frictionally contact the disc. A method is also provided for applying first and second forces against a friction element in response to an operation of an electric motor. The first and second forces are applied with respective magnitudes so as to maintain a substantially constant wear between the edges of the first friction element.
    Type: Application
    Filed: February 14, 2003
    Publication date: August 19, 2004
    Applicant: Delphi Technologies, Inc.
    Inventors: Huang-Tsang Chang, Eric Padiolleau
  • Publication number: 20040134724
    Abstract: An axial setting device having two discs (24, 29) which are rotatable relative to one another, which are supported coaxially relative to one another and between which there are guided balls (35) in pairs of ball grooves (34, 39) whose depth varies across the circumference. One of the discs (24, 29) is axially supported and one is axially displaceable against elastic returning forces of first spring (33). At least one of the discs can be driven by a motor (11) via a gear drive. During the return movement of the discs (24, 29) after the balls (35) have reached their end position in the ball grooves, which end position is defined by the greatest groove depth, a second spring permits overshooting of the drivable disc (24) together with the disc (29) supported with respect to rotation against elastic returning forces of the second spring.
    Type: Application
    Filed: December 23, 2003
    Publication date: July 15, 2004
    Inventors: Alexey Katsnelson, Adrian Chludek, Andreas Kelbel, Kurt Muller
  • Publication number: 20040134723
    Abstract: The invention relates to an electromechanical brake with self-boosting by means of a wedge mechanism. An actuating force is exerted on the friction brake lining via toothing sets that mesh with one another. By means of an engagement angle of the toothing sets, a favorable force introduction angle of the actuating force on the friction brake lining can be attained. In addition, by using a nonround gear wheel and/or a non-straight rack as the toothing sets, flaring of a caliper upon braking and an infeeding motion of the friction brake lining transversely to a brake disk can be compensated for.
    Type: Application
    Filed: December 29, 2003
    Publication date: July 15, 2004
    Inventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik
  • Patent number: 6761252
    Abstract: The present invention relates to an electromechanically actuated partially lined disk brake suitable both for realizing driving and parking brake functions. For this purpose, the partially lined disk brake comprises a brake caliper with an electromechanical actuating unit, by means of which the partially lined disk brake can be clamped by way of at least one interposed actuating element. The object of the invention is to achieve a compact design and a parking brake that can be actuated electrically. The brake caliper includes a multi-step reduction gear arranged between the integrated actuating unit and an actuating element. The actuating unit, reduction gear and actuating element are arranged in a recess of the brake caliper that is configured as a housing. According to the invention, the multi-step reduction gear is configured as a non-self-locking device, i.e.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: July 13, 2004
    Assignee: Continental Teves AG & Co. OHG
    Inventors: Rolf Weiler, Jürgen Balz, Werner Denhard, Stephan Heiderich
  • Publication number: 20040118642
    Abstract: Method and arrangement for providing a disc brake (1) for land vehicles having a brake disc (2) rotating with a wheel axle (3). A brake caliper (4) is mounted in a movable manner in a nonrotating wheel-axle housing that is arranged about said wheel axle (3). The two brake linings (5), one on each side of the brake disc (2), are configured in such a way that, when acted upon by an activating mechanism (8), they are caused to bear against the sides (9) of the brake disc (2) for transmitting a braking torque to the wheel axle (3). The brake caliper (4) includes two brake-lining holders (10, 11) which are axially displaceable relative to one another and relative to the wheel-axle housing (3). The brake-lining holders (10, 11) each have at least one actuation surface (12, 13, 14, 15)for engagement with the activating mechanism (8), as a result of which the brake-lining holders (10, 11) are displaced toward each other upon activation.
    Type: Application
    Filed: January 13, 2004
    Publication date: June 24, 2004
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Johan HULTEN, Ingemar DAGH