Self-force-increasing Means Patents (Class 188/72.2)
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Publication number: 20080289913Abstract: The present invention relates to an electromechanical disk brake (1), having a self-amplifying device (10) equipped with a wedge mechanism. According to the present invention, the disk brake (1) is embodied with a lockable, automatically releasing support (17) for a friction brake lining (4). It is thus possible to provide a self-locking design for the disk brake (1) with a negative brake coefficient C* because in the event of a malfunction, it is possible to release the disk brake (1) by releasing the support (17). This enables a powerful self-amplification, as a result of which the disk brake (1) requires little braking force and braking energy.Type: ApplicationFiled: March 26, 2007Publication date: November 27, 2008Inventor: Dietmar Baumann
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Publication number: 20080245622Abstract: The invention relates to a self-boosting electromechanical friction brakes particularly in the form of a partially lined disk brake. The friction brake includes a friction brake lining which is helically movable with respect to the direction of rotation of a brake disk and pressed there into. A ramp mechanism is provided with ramps which cooperate with a roller bearing mechanism supporting the brake lining, to obtain the self-boosting effect. According to the invention, two of three rolls of the ramp mechanism are embodied with directing flanges for guiding the rolls on the ramps in order to helically guide the friction brake lining.Type: ApplicationFiled: July 21, 2006Publication date: October 9, 2008Inventors: Chi-Thuan Cao, Dirk Hofmann, Herbert Vollert, Willi Nagel, Bertram Foitzik, Bernd Goetzelmann, Hans Frick
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Publication number: 20080236959Abstract: A vehicle brake system, capable of realizing a brake-by-wire construction which can be installed in vehicles in the same manner as conventional brake systems, is provided with a booster device, a master cylinder, wheel brakes, and a hydraulic pressure control device interposed between the master cylinder and the wheel brakes. The system is further provided with a stroke sensor for detecting the moving stroke of a brake pedal, a simulator for applying to the brake pedal a pseudo reaction force corresponding to the moving stroke of the brake pedal, a play or idling component arranged between the booster device and the hydraulic pressure control device for absorbing the moving stroke of the brake pedal by a predetermined amount, and an electronic control device for controlling the hydraulic pressure control device based on an input from the stroke sensor.Type: ApplicationFiled: March 7, 2008Publication date: October 2, 2008Inventors: Koichi Hashida, Yusuke Morikawa, Masayuki Naito, Koichi Kokubo
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Publication number: 20080217118Abstract: The invention relates to a bellows for a self-energising electromechanical disc brake. According to the invention, a low deformation force may be achieved by means of a bellows with an elliptical, offset cross-section tapering in one direction and, in opposing circumferential sections of the bellows, the provision of circumferential folds of small curvature and inclined folds along the longitudinal sides of the bellows.Type: ApplicationFiled: June 14, 2006Publication date: September 11, 2008Inventors: Chi-Thuan Cao, Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann
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Publication number: 20080210498Abstract: A self-energizing disc brake having an electric actuator in which an activation force applied to the actuator is amplified using a self-energizing device arranged between the actuator and brake lining is described. The device has a brake application unit for applying at least one brake lining to one side of a brake disc by carrying out an application movement of the brake lining relative to the brake disc, the application movement having at least a first movement component in a direction parallel to a rotational axis of the brake disc and a second movement component in a direction tangential to the rotational axis of the brake disc. The device also has at least one electromotive drive for activating the brake application unit.Type: ApplicationFiled: September 28, 2005Publication date: September 4, 2008Applicant: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventors: Johann Baumgartner, Matthias Seidenschwang, Ernst Dieter Bieder, Luise Ulrike Bieder nee Rothe, Dirk Ganzhorn
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Publication number: 20080185240Abstract: The invention relates to a self-reinforcing electromechanical disk brake. The invention proposes to produce a lining carrier plate of the disk brake from a fiber composite material. A bending-resistant lining carrier plate can be produced cost-effectively in this way. In addition to fiber-reinforced plastic, steel-reinforced concrete can also be considered as a composite material for the lining carrier plate.Type: ApplicationFiled: July 12, 2006Publication date: August 7, 2008Inventors: Chi-Thuan Cao, Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann, Hans Frick
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Patent number: 7398866Abstract: The invention relates to an electromechanical, self-boosting friction brake, in particular a disk brake. The friction brake is embodied with a wedge element for exerting contact pressure on a friction brake lining; a wedge angle (?) is selected such that a brake parameter C* is located at or near a pole point. As a result, a high self-boosting that tends toward infinity and consequently a low actuating force are attained. To avoid blocking of the friction brake, an actuating device is embodied to block an independent motion of the wedge element, or has a regulating device for regulating a contact pressure of the friction brake lining against a brake body (brake disk).Type: GrantFiled: January 16, 2003Date of Patent: July 15, 2008Assignee: Robert Bosch GmbHInventors: Dietmar Baumann, Juergen Hilzinger, Dirk Hofmann, Herbert Vollert, Andreas Henke, Frieder Keller, Hanniel Schmidt
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Patent number: 7398863Abstract: A safety device brakes an elevator car with a guide rail exhibiting an oblong guide flange. The safety device includes a base carrying a retaining element and an abutment with the guide flange positioned therebetween. A mechanism squeezes, when braking, a braking element blocking roller between the guide flange and the abutment. The mechanism, co-operating with an electromagnet, moves the braking element in a controlled way between different positions associated with different operating conditions of the safety device.Type: GrantFiled: September 22, 2003Date of Patent: July 15, 2008Assignee: Inventio AGInventors: Christoph Liebetrau, Ruedi Stocker, Esben Rotboll
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Publication number: 20080164105Abstract: An electromechanical disk brake having a self-boosting by means of a ramp mechanism with an encapsulation to protect moving parts of the brake against becoming soiled. The friction brake lining has a three-point support with three roller bodies and thus is braced in a statically defined way, and a contate gear mechanism for actuating the disk brake, which is not vulnerable to positional tolerances and does not cause any axial forces.Type: ApplicationFiled: July 1, 2004Publication date: July 10, 2008Inventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann
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Patent number: 7395904Abstract: An actuator arrangement for a disc brake for moving first and second friction members into engagement with a rotor and effect a brake application. The actuator arrangement includes first and second levers that are pivotally connected to an anchor located in a plane that is perpendicular to first and second rails on which the first and second friction member are retained, a third lever that is connected to the first lever and a yoke to receive a second end of the second lever and align a first ramp surface thereon with a second ramp surface on its end and an input linkage. The input linkage receives an input force and moves on the first and second ramp surfaces to pull on the first lever and push on the second lever to move the first and second friction members into engagement with the rotor to effect a brake application.Type: GrantFiled: December 20, 2005Date of Patent: July 8, 2008Assignee: Robert Basoh GmbHInventors: Christopher Byrd, John Clark
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Publication number: 20080128222Abstract: A disk brake mechanism is described, comprising one of a pneumatic and electromechanical actuator having a brake piston, a brake application device for actuating the disk brake mechanism, and a fixed-type brake caliper attached to an axle, for moving a reaction-side brake lining against a brake disk during application. The mechanism also includes a pivoting lever of the brake application device, operatively connected to the brake piston for pressing an application-side brake lining during application, the pivoting lever being supported on one side on the brake caliper, and a supporting part forming, after a predefined stroke portion of an application stroke of the brake piston, an abutment for the pivoting lever between a pressure region of the application-side brake lining on the pivoting lever, and a support of the pivoting lever on the brake caliper.Type: ApplicationFiled: November 21, 2007Publication date: June 5, 2008Applicant: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbHInventor: Franz-Josef BIRKENEDER
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Publication number: 20080121472Abstract: The invention refers to a disc brake with self-servo effect with a caliper overlapping a brake disc, comprising a pressure element provided with a brake pad for engagement with the brake disc, a support element, at least one bearing element, by means of which the pressure element is supported against the support element, and means for adjusting a control force acting on the pressure element substantially transverse to the brake disc, whereby means for determining the contact forces of the at least one bearing element in the support element and means for determining the friction force from said determined contact forces are provided. In addition, the present invention refers to a method for determining the friction force on the brake disc of such a disc brake in that the contact forces of the at least one bearing element in the support element, and the friction force at the brake disc from said determined contact forces are determined.Type: ApplicationFiled: November 27, 2007Publication date: May 29, 2008Inventor: Lars Severinsson
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Patent number: 7353917Abstract: The present invention concerns a disc brake having a caliper encircling one or more brake discs. At least one of said brake discs is received sliding on a hub or a part connected to the hub. According to the invention the caliper is to be mounted in a lagging position. In said lagging position at least a portion of the brake pad assemblies is positioned 0°-180° behind an imaginary point vertically above the centre of a wheel axle, when seen in the normal direction of disc rotation. The invention is intended for brakes, in which the brake pads only act on a restricted part of a full circle.Type: GrantFiled: October 31, 2005Date of Patent: April 8, 2008Assignee: Haldex Brake Products ABInventors: Joakim Gripemark, Patrik Kall, Goran Stensson
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Publication number: 20080073164Abstract: The invention relates to a self-boosting disk brake. In case of failure, in order to enable releasing the disk brake or putting it out of operation, the invention proposes embodying a self-boosting device so that it is movable in the direction of rotation of a brake disk and is fixable with a releasable fixation device.Type: ApplicationFiled: September 19, 2007Publication date: March 27, 2008Inventor: Dietmar BAUMANN
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Patent number: 7328777Abstract: A brake system using an electric motor to provide sufficient braking force by generating the self boosting operation using the motor and rotational inertia of the brake disc, thereby stabilizing the braking operation.Type: GrantFiled: December 12, 2005Date of Patent: February 12, 2008Assignee: Hyundai Motor CompanyInventor: In-Hwan Han
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Patent number: 7311180Abstract: 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: GrantFiled: September 19, 2001Date of Patent: December 25, 2007Assignee: Robert Bosch GmbHInventors: Dietmar Baumann, Hanniel Schmidt, Herbert Vollert, Frieder Keller
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Patent number: 7172056Abstract: 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: GrantFiled: May 26, 2004Date of Patent: February 6, 2007Assignee: Robert Bosch GmbHInventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann
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Patent number: 7143873Abstract: 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: GrantFiled: April 28, 2003Date of Patent: December 5, 2006Assignee: Estop GmbHInventors: Antonio Pascucci, Henry Hartmann, Martin Schautt
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Patent number: 7114600Abstract: 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: GrantFiled: April 14, 2003Date of Patent: October 3, 2006Assignee: Robert Bosch GmbHInventor: Jean-Pierre Boisseau
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Patent number: 7086505Abstract: A disc brake has a support with a first end separated from a second end by first and second side walls that retain actuation members to move the first and second friction members into engagement with a rotor and effect a brake application. First and second perpendicular projections that extend from the support are aligned with the first wall and third and fourth perpendicular projections that extend from the support and are aligned with the second wall. The first and second friction members have first and second radial projections located between a first end and a second end. Beams connect the radial projections with the perpendicular projections to align the first and second friction members with the rotor and pivot on the perpendicular projections to carry reaction forces created during a brake application into the first end of the support.Type: GrantFiled: December 10, 2004Date of Patent: August 8, 2006Assignee: Robert Bosch GmbHInventor: John Edmund Mackiewicz
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Patent number: 7073636Abstract: An electromechanical disk brake with mechanical self-boosting for instance by a ramp mechanism, which is intended for use in motor vehicles in which the ramp mechanism is braced in a circumferential direction relative to a brake disk on a brake bracket, in order thereby to keep a caliper guide of a floating caliper free of frictional and braking forces of the disk brake.Type: GrantFiled: January 12, 2004Date of Patent: July 11, 2006Assignee: Robert Bosch GmbHInventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik
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Patent number: 7055658Abstract: A self-energized disk brake assembly includes gain stabilization features for controlling the multiplication of applied force against a rotatable brake member. The brake assembly includes a first brake pad supported about a first pivot and a second brake pad supported about a second pivot. An actuator applies a force to drive the brake pads into the rotatable brake member. Frictional force between the brake pads and the rotatable brake member pulls the brake pads into further engagement generating an increase in braking force from self-energization. A position of the first and second pivots is adjustable to control the amount of braking force generated from self-energization.Type: GrantFiled: December 29, 2003Date of Patent: June 6, 2006Assignee: ArvinMeritor Technology, LLCInventors: Frederick A. Jelley, Joseph A. Kay, James R. Brichta, Dennis G. O'Reilly, Christopher S. Keeney, Jaeho Kwak, Dennis A. Kramer
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Patent number: 7040463Abstract: 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: GrantFiled: June 23, 2004Date of Patent: May 9, 2006Assignee: Robert Bosch GmbHInventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik
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Patent number: 7040462Abstract: A brake (10) for a wheel of a vehicle is slidably mounted to a vehicle frame by mounting sleeves (22). The brake (10) includes a stationary actuator (20) which has a plurality of depressions (38) adapted to receive a plurality of balls (40). The stationary actuator (20) further has a pin hole (34) which receives a pin (36) which correspondingly defines a pivot axis (50). Adjacent to the stationary actuator (20) is a rotating actuator (66) which rotates about an axis (50) and includes a plurality of depressions (78) which are axially aligned with the depressions (38) while in an un actuated state. The brake (10) is actuated by rotation of the rotating actuator (66) which correspondingly moves the balls (40) to progressively more shallow portions of the depressions (38, 78) which acts upon a washer (82) and one or more shims (86) to force a first stator (16) and a second stator (18) together and into contact with a rotor (12).Type: GrantFiled: September 14, 2004Date of Patent: May 9, 2006Assignee: Ausco Products, Inc.Inventors: Brian P. Dennis, Howard H. Baldeosingh
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Patent number: 7000741Abstract: A self-boosting, electromechanical friction brake having with a fixed, drumlike brake body in which two rotatable brake rings are disposed, which are rotatable counter to one another via a planetary gear and can be spread apart thereby. As a result of being spread apart, the brake rings are pressed from inside against the brake body and are braked. The friction brake may be sealed off and thus protected it against environmental factors. A lubricant filling is possible, which reduces wear and as a result makes a lifetime brake possible. The brake may be cooled through coolant channels which can be connected via connections to a coolant circulation system of an internal combustion engine of a motor vehicle.Type: GrantFiled: December 15, 2004Date of Patent: February 21, 2006Assignee: Robert Bosch GmbHInventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann
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Patent number: 6986411Abstract: 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: GrantFiled: November 20, 2003Date of Patent: January 17, 2006Assignee: ESTOP GmbHInventors: Martin Schautt, Antonio Pascucci, Henry Hartmann
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Patent number: 6983828Abstract: The invention relates to a friction brake (10) for a motor vehicle. The friction brake (10) for instance has a disk brake (12), which is actuatable by means of an actuating device, for instance in the form of a ball thread drive (22). The invention proposes embodying the friction brake (10) with a band brake (34), whose band (36) is mounted on the circumference of a nut (26) of the ball thread drive (22). If the brake band (36) is put under tensile stress in order to actuate the band brake (34), then the brake band (36) rotates the nut (26) of the ball thread drive (22) in a tensing direction and in this way actuates the disk brake (12). The invention has the advantage that the friction brake (10) has high brake boosting and therefore requires only little actuating energy. It is accordingly suitable for embodiment as an electromechanical friction brake (10) with an electric motor (56) for its actuation.Type: GrantFiled: July 20, 2001Date of Patent: January 10, 2006Assignee: Robert Bosch GmbHInventors: Dietmar Baumann, Hanniel Schmidt, Herbert Vollert, Frieder Keller
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Patent number: 6978868Abstract: 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: GrantFiled: November 20, 2003Date of Patent: December 27, 2005Assignee: eSTOP GmbHInventor: Martin Schautt
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Patent number: 6962244Abstract: 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: GrantFiled: January 9, 2004Date of Patent: November 8, 2005Assignee: Haldex Brake Products ABInventors: Anders Örtegren, Stefan Sandberg
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Patent number: 6957723Abstract: 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: GrantFiled: December 29, 2003Date of Patent: October 25, 2005Assignee: Robert Bosch GmbHInventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik
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Patent number: 6938737Abstract: 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: GrantFiled: February 13, 2004Date of Patent: September 6, 2005Assignee: Ford Global Technologies, LLCInventor: Dale Lee Hartsock
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Patent number: 6932198Abstract: 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: GrantFiled: August 7, 2002Date of Patent: August 23, 2005Assignee: Ford Global Technologies, LLCInventor: Minh Trac Trinh
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Patent number: 6923296Abstract: A support for a disc brake has first and second bores in a first projection and third and fourth bores in a second projection located in a same horizontal plane and the first and third bores aligned in a first vertical plane and the second and fourth bores aligned in a second vertical plane. A first pin retained in the first and third bores extend through a first lever to position a first friction member adjacent a rotor while a second pin extends through the second and fourth bores to position a second friction member adjacent the rotor. Pressurized fluid is supplied to act on a piston retained in the first lever such that the first lever pivots on the first pin and the second lever pivots on the second pin to thereafter move the first and second friction members into engagement with the rotor and effect a brake application.Type: GrantFiled: March 5, 2004Date of Patent: August 2, 2005Assignee: Robert Bosch CorporationInventors: John Edmund Mackiewicz, William John Penninger
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Publication number: 20040226782Abstract: Disclosed is a hinge apparatus of a mobile terminal having a deceleration section at a specific and preset time in the turning of a swinging part thereof. The hinge apparatus having a deceleration section includes: a rotary shaft; a fixed cam mounted on one side of the rotary shaft; a moving cam mounted on one side of the fixed cam for being straightly moved along the rotary shaft via a reciprocating motion taking place between the fixed cam and the moving cam; an elastic means for supporting the moving cam to stretch and return to original position; a housing for lodging the moving cam and the elastic means; and a frictional force generation means mounted on one side of the housing for generating frictional force at a predetermined interval during a reciprocating motion taken place between the fixed cam and the moving cam.Type: ApplicationFiled: December 31, 2003Publication date: November 18, 2004Inventor: Joon-Hee Lim
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Publication number: 20040154881Abstract: An electromechanical disk brake with mechanical self-boosting for instance by means of a ramp mechanism, which is intended for use in motor vehicles in which the ramp mechanism is braced in a circumferential direction relative to a brake disk on a brake bracket, in order thereby to keep a caliper guide of a floating caliper free of frictional and braking forces of the disk brake.Type: ApplicationFiled: January 12, 2004Publication date: August 12, 2004Inventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik
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Publication number: 20040134723Abstract: 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: ApplicationFiled: December 29, 2003Publication date: July 15, 2004Inventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik
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Patent number: 6761251Abstract: A hydraulic brake device for a bicycle includes a hydraulic brake having a first recess and a second recess, and a conduit wire connected to the triple body of the hydraulic brake. The triple body has an inside provided with an inlet tube connected to the conduit wire, a first tube connected to the inlet tube and the first channel of the first recess, and a second tube connected to the inlet tube and the second channel of the second recess. Thus, the hydraulic brake device can provide a braking effect gradually, without incurring a self-locking action, thereby protecting the rider's safety.Type: GrantFiled: May 22, 2003Date of Patent: July 13, 2004Inventor: Chun Te Wen
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Patent number: 6752247Abstract: 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: GrantFiled: May 6, 2002Date of Patent: June 22, 2004Assignee: Ford Global Technologies, LLCInventor: Dale Lee Hartsock
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Publication number: 20040108175Abstract: Electromechanical brake with zero backlash actuation 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 &agr; that is supported on a corresponding counter bearing (22).Type: ApplicationFiled: November 20, 2003Publication date: June 10, 2004Applicant: ESTOP GmbHInventor: Martin Schautt
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Patent number: 6715589Abstract: A self-servoing disc brake assembly is provided that includes a driven rotor member having a first inner surface with a plurality of first pockets. The driven rotor member also includes a first friction surface spaced from the first inner surface. A movable rotor member is supported on the driven rotor member and is movable relative to the driven rotor member between non-servoed and servoed positions. The rotor members are spaced a first distance in the non-servo position, and the rotor members are spaced a second distance which is greater than a first distance in the servo position. The movable rotor member includes a second inner surface with a plurality of second pockets adjacent to the first inner surface and a friction surface spaced from the second inner surface. A plurality of balls are arranged between the first and second pockets with at least one of the first and second pockets being ramped.Type: GrantFiled: February 9, 2001Date of Patent: April 6, 2004Assignee: Meritor Heavy Vehicle Systems, LLCInventors: Neil Williams, Juergen Dreher, Roy Lee Hayford, Christos T. Kyrtsos, Wilfried Giering, David L. Brademeyer, Gerald D. Anderson
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Patent number: 6668981Abstract: The present invention concerns a disc brake having a brake mechanism. The disc brake comprises a caliper (16) reaching over a brake disc and having a cavity for receiving the brake mechanism. The brake mechanism comprises a bearing bracket (30) received from the inside in an opening (17) of the caliper (16) in the side wall furthest from the brake disc. The brake mechanism comprises an adjuster mechanism (23) an adjustment shaft (40) and a reset shaft (41). Means (24) are provided for transferring movement between the adjuster and reset shafts (40, 41). The adjuster mechanism is actuated by a lever pin (43) on a lever (31) of the brake mechanism and is received in the bearing bracket (30) at assembly.Type: GrantFiled: May 25, 2001Date of Patent: December 30, 2003Assignee: Haldex Brake Products ABInventors: Anders Örtegren, Stefan Sandberg
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Publication number: 20030164270Abstract: The invention relates to an electromechanical, self-boosting friction brake, in particular a disk brake. The friction brake is embodied with a wedge element for exerting contact pressure on a friction brake lining; a wedge angle (&agr;) is selected such that a brake parameter C* is located at or near a pole point. As a result, a high self-boosting that tends toward infinity and consequently a low actuating force are attained. To avoid blocking of the friction brake, an actuating device is embodied to block an independent motion of the wedge element, or has a regulating device for regulating a contact pressure of the friction brake lining against a brake body (brake disk).Type: ApplicationFiled: January 16, 2003Publication date: September 4, 2003Applicant: Robert Bosch GmbHInventors: Dietmar Baumann, Juergen Hilzinger, Dirk Hofmann, Herbert Vollert, Andreas Henke, Frieder Keller, Hanniel Schmidt
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Publication number: 20030159895Abstract: The invention relates to an electromechanically actuatable disk brake (10). To attain brake reinforcement, the invention proposes that a friction brake lining (40) be guided displaceably with a guide (44, 50) whose angle to the brake disk (14) is adjustable. A frictional force exerted by the rotating brake disk (14) on the friction brake lining (40) pressed against it causes a force component in the direction of the guide (44, 50), which when the guide (44, 50) is positioned obliquely creates a pressure force of the friction brake lining (40) against the brake disk (14) and thus a brake reinforcement.Type: ApplicationFiled: March 19, 2003Publication date: August 28, 2003Inventors: Christopher C Conboy, Ronald j Gleason
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Publication number: 20030070887Abstract: The invention concerns a brake caliper comprising at least two opposite pistons (4 and 5) mounted in a housing (1-2) with fittings for mounting, in two parallel planes, two friction pads (7) and (8) secured to said pistons to act at least on a disc (9). The invention is characterized in that the fittings for mounting the friction pads (7 and 8) consist of means (10 and 11) adapted to pick up the tangent effort of said fiction pads so as to avoid any movement of the latter during braking; the means (10 and 11) adapted to pick up the tangent effort of the fiction pads (7 and 8) are arranged in one or more zones of the housing (1-2) where there is no deformation.Type: ApplicationFiled: October 3, 2002Publication date: April 17, 2003Inventor: Gilbert Beringer
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Patent number: 6543858Abstract: A wheel end assembly is provided which facilitates maintenance of the wheel end assembly, and further provides a more secure bearing housing. The spindle is caused to rotate with the drive axle, and is in turn connected to drive a wheel hub. In other features, a housing mounts a bearing cup structure which surrounds the spindle, and has a piloting land for positioning a brake torque plate or a spider, along with the bearing cup. A tone wheel is sandwiched between two nuts, and is caused to rotate with the spindle. The tone wheel includes a tab extending into an opening on the washer such that the washer rotates with the tone wheel. The overall assembly facilitates maintenance and assembly, and provides a more secure environment for the bearing structure.Type: GrantFiled: October 2, 2001Date of Patent: April 8, 2003Assignee: Meritor Heavy Vehicle Technology, LLCInventor: Patrick B. Melton
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Patent number: 6491138Abstract: A disk brake having a self-energized brake effect. The disk brake has a sectional lining with a self-energized power brake and made up of a rotating brake disk, a U-shaped stationary caliper enclosing the brake disk from the outside, brake shoes disposed in the caliper, the support plates of the brake shoes, which are connected to a brake lining, being pivotally held in a bearing arrangement, and an actuator disposed on the poles of the caliper for synchronously shifting and pressing the brake shoes against the faces of the brake disk, and inclined surfaces for a self-energized increase of the pressure of the brake shoes against the brake disk being provided in the advance path of the brake shoes.Type: GrantFiled: November 30, 2000Date of Patent: December 10, 2002Inventor: Gerhard Spägele
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Patent number: 6446769Abstract: The invention relates to braking apparatus for a linear motor driven load, where the motor comprises a source of electrical energy, a bed having a braking surface, and a load carrying member operably interconnected to the bed for relative movement with respect thereto. The braking apparatus comprises, a brake arm pivotally mounted at its proximal end to the load carrying member. A frictional braking pad is disposed on the distal end of the brake arm in opposing relation to the braking surface on the linear motor's bed. A biasing apparatus, such as a spring, is in contact with the brake arm for pivoting the brake arm with respect to the load carrying member and placing the brake pad of the brake arm in contact with the braking surface on the bed of the linear motor. An electrically responsive solenoid is coupled to the source of electrical energy for overcoming the biasing apparatus during times when electrical power is being supplied to the linear motor.Type: GrantFiled: October 2, 2000Date of Patent: September 10, 2002Inventors: Gregory A. Kangiser, Patrick J. Moreland
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Patent number: 6318513Abstract: An electromechanical brake, in particular for vehicles, has an electric actuator which generates an actuation force and acts on at least one frictional element so as to press the latter, in order to bring about a frictional force, against a rotatable component of the brake which is to be braked. In order to keep the actuation force to be applied by the actuator low, there is, between the component to be braked and the electric actuator, an arrangement which brings about the self-energization of the actuation force generated by the electric actuator. In the event of a deviation between the setpoint value and the actual value, a device for comparing a setpoint value of the frictional force with the actual value of the frictional force controls the electric actuator, in order to correspondingly increase or decrease the generated actuation force, with the result that the actual value is approximated to the setpoint value of the frictional force.Type: GrantFiled: August 25, 1998Date of Patent: November 20, 2001Assignee: Deutsches Zentrum fur Luft- und Raumfahrt e.V.Inventors: Johannes Dietrich, Bernd Gombert, Markus Grebenstein
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Patent number: 6305506Abstract: Electrically operated braking system with a motor-driven disc brake including an electric motor for braking an automotive vehicle wheel, and a motor control device controlling the electric motor, the disc brake further including a disc rotor having a friction surface, a friction pad movable for contact with the friction surface to restrict rotation of the disc rotor, a pad support mechanism for supporting the friction pad movably in a direction intersecting the friction surface, a pad pressing mechanism including the electric motor and a pressing member, the electric motor producing a drive force for moving the pressing member to force the friction pad against the disc rotor, and a self-servo mechanism for providing a self-servo effect of boosting a friction force generated between the friction surface and the friction pad, on the basis of the friction force.Type: GrantFiled: April 2, 1999Date of Patent: October 23, 2001Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kenji Shirai, Ryoichi Kurasako, Yasunori Yoshino, Kazuhiko Imai