Pulsator Patents (Class 60/533)
  • Patent number: 10864897
    Abstract: A brake device for a hydraulic motor vehicle brake system without a vacuum booster, with a housing with at least one pressure chamber arranged therein, with a cylinder piston which can be axially moved in an actuation direction by an actuating rod unit coupled to the cylinder piston in order to generate brake pressure, wherein a rigid stop is provided for the cylinder piston which defines the non-actuated starting position of the cylinder piston. In order to provide an improved brake device of the above-mentioned type, which permits simple and reliable detection of the zero point and simultaneously has reduced noise emission on the return, a damping element is provided which permits a mechanical decoupling of the actuating rod unit from the cylinder piston in a release direction opposite the actuation direction by reversible deformation.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: December 15, 2020
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Andreas Bischoff, Jefferson Colasanta, Marc Ibanez, Manfred Rüffer, Thomas Sellinger
  • Patent number: 10507817
    Abstract: An electric motor (2) is controlled according to the stroke of an input rod (30) moved in response to an operation of a brake pedal. The rotation of the electric motor is transmitted through a belt transmission mechanism (45) to a ball-screw mechanism (38) to propel a primary piston (10), thereby generating a brake hydraulic pressure in a master cylinder (4). The belt transmission mechanism has pulleys (45A, 45B), one of which is secured to an output shaft of the electric motor. The output shaft and a nut member (39) of the ball-screw mechanism are held by bearings (42A, 42B and 42C) secured to a rear housing (3B) which is a single member. Thus, before an electric motor-driven booster (1) is assembled, the belt transmission mechanism can be subassembled to the rear housing. Therefore, a belt (46) can be adjusted for tension in the state of a subassembly.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: December 17, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Hiroshi Shigeta, Daichi Nomura
  • Patent number: 10422396
    Abstract: A brake system and a method of controlling a brake system. The method may include indirectly estimating an air gap between a brake friction member and a brake pad assembly based on a position signal from a position sensor that detects cycling of the friction brake and a further signal indicative of an amount of brake force used to engage the brake pad assembly with the brake friction member. The air gap may be adjusted when an estimated air gap differs from a desired air gap.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: September 24, 2019
    Assignee: Meritor Heavy Vehicle Braking Systems (UK) Limited
    Inventors: Yixin Yao, Prashant Narula
  • Patent number: 10023160
    Abstract: Actuator device for brakes suitable to be operatively connected to at least a first braking device acting on a brake disc or drum, so as to exercise a braking action, the actuator device for brakes being fitted with a lever and/or pedal for its manual operation, and being provided with a body which houses at least one piston which acts on a hydraulic circuit fluidically connected to said at least one first braking device for the hydraulic operation thereof, the lever and/or pedal being operatively connected to said piston so as to command its movement in an operating direction so as to exert pressure on the fluid of the hydraulic circuit, characterized in that the actuator device for brakes is fitted with an automatic actuator, operatively connected to the piston and/or to the operating lever and/or pedal so as to increase, control or reduce the braking action imposed manually by the operation of the operating lever and/or pedal, controlling the operating stroke of the piston.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: July 17, 2018
    Assignee: Freni Brembo S.p.A.
    Inventors: Carlo Cantoni, Roberto Arienti, Massimo Gualandris, Alberto Comenduli
  • Patent number: 9908517
    Abstract: A primary piston of a tandem master cylinder includes: a body provided with a skirt, having in the rear thereof a cavity for the plunger and the push rod connected to the brake pedal and in the front a cavity defining the primary chamber. The piston is made of a plastic material and at least one magnet is built into the body of the piston.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: March 6, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Marc Rodriguez, Daniel Grech, Laurent Lhuillier
  • Patent number: 9862367
    Abstract: Disclosed is a master cylinder for a brake system. The master cylinder includes a cylinder body that has a bore therein; at least one piston provided in the bore to be moved forwards and rearwards; a liquid pressure chamber compressed by the piston; a brake liquid port that is connected to a reservoir and configured to supply brake liquid to the liquid pressure chamber; and a brake liquid discharge opening for discharging the brake liquid in the liquid pressure chamber to a wheel brake of a wheel. A valve unit that includes a check valve to control the unidirectional flow of the brake liquid that is introduced from the reservoir to the liquid chamber and a fluid resistance hole opened in two directions and is smaller than the size of the brake liquid discharge opening is provided in the brake liquid port.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: January 9, 2018
    Assignee: MANDO CORPORATION
    Inventor: Dong Koo Kang
  • Patent number: 9822878
    Abstract: In order to provide a master cylinder, in particular for a clutch system, an actuating system or a braking system of a vehicle, which enables secure sealing of the cylinder chamber relative to the outside, as well as a reliable flow of hydraulic medium into the cylinder chamber, it is proposed that the piston comprises a first section which has a cylindrical lateral surface and a second section which has at least one region which is set back radially inwardly with respect to the cylindrical lateral surface of the first section, wherein at least one set-back region extends to an end of the piston and wherein the first and second sections are arranged on the piston in such a way that in an actuating position of the piston, the main sealing element in the first section of the piston abuts in sealing manner thereagainst and in the pressure equalization position of the piston, in the second section of the piston between the piston and the main sealing element, at least one gap is formed, through which hydraulic me
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: November 21, 2017
    Assignee: Gustav Magenwirth GmbH & Co. KG
    Inventors: Stefan Fritschle, Michael Ruopp
  • Patent number: 9358891
    Abstract: A vehicle brake system for braking a vehicle including a braking-mode switching mechanism configured to selectively effectuate, depending upon situations of the vehicle brake system, one of (A) a regulated-pressure-dependent braking mode in which is generated a regulated-pressure-dependent braking force having a magnitude that depends on a regulated pressure of a working fluid and (B) a braking mode depending on an operation force and the regulated pressure in which are generated both of an operation-force-dependent braking force having a magnitude that depends on the operation force by a driver and the regulated-pressure-dependent braking force.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: June 7, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Isono, Yasuji Mizutani
  • Patent number: 9322238
    Abstract: A pump drive head for a progressing cavity pump comprises a top mounted stuffing box rotatably disposed around a compliantly mounted standpipe with a self or manually adjusting pressurization system for the stuffing box. To prevent rotary and vertical motion of the polish rod while servicing the stuffing box, a polished rod lock-out clamp is provided with the pump drive head integral with or adjacent to a blow-out-preventer which can be integrated with the pump drive head to save space and cost. A centrifugal backspin braking system located on the input shaft and actuated only in the backspin direction and a gear drive between the input shaft and output shaft are provided.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: April 26, 2016
    Assignee: Oil Lift Technology Inc.
    Inventor: Vern A. Hult
  • Patent number: 9308905
    Abstract: A motor vehicle brake system actuated in brake-by-wire and fallback operating modes, having a brake master cylinder, brake circuits, a pressure medium storage vessel, a brake pedal, a separating valve for separating the brake circuit into a first section connected to the separating valve the master cylinder, and a second section connected to the separating valve and the wheel brakes. A first pressure provision device has a piston actuated by an actuator, a simulation device connected by a simulator release valve to the master cylinder for a pleasant brake pedal feel in the brake-by-wire operating mode. A first electronic control and regulating unit actuates the first pressure provision device, the separating valves and the simulator release valve. A second pressure provision device has a suction connector and a pressure connector per brake circuit being connected to the inlet of the separating valve.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: April 12, 2016
    Assignee: CONTINENTAL TEVES AG & CO. OHG
    Inventors: Harald Biller, Stefan A. Drumm, Marco Besier, Steffen Linkenbach, Christopher Scharf
  • Patent number: 9302664
    Abstract: An input device of a vehicle brake system integrally includes an integrally provided master cylinder and a stroke simulator which communicate via a hydraulic communication path. The stroke simulator is provided with a simulator piston accommodated within a simulator accommodation chamber. The simulator accommodation chamber has an opening portion enabling the insertion of the simulator piston into the simulator accommodation chamber from the side on which the brake pedal is disposed relative to the dashboard.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: April 5, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuaki Murayama, Kunimichi Hatano, Arata Inoue, Kazuyoshi Akutsu, Takaaki Ohnishi
  • Patent number: 9226431
    Abstract: A casting for a housing for a flexible, configurable power converter is disclosed. The housing includes a power compartment that is configured to accept a heat sink in either of two orientations. The configurable nature of the power converter allows the same power convertible package to be used in a number of applications without having to incur the cost of developing a new power converter package.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: December 29, 2015
    Assignee: Caterpillar Inc.
    Inventors: Todd Nakanishi, Jon Husser, Timothy Finn
  • Patent number: 9205821
    Abstract: A motor vehicle brake system operable in a brake-by-wire and fallback modes. The system includes a brake pedal (1), a master cylinder (2), a reservoir (4), a travel simulator (3), an electrically controllable pressure source (5), isolation valves (23a, 23b) pumps (32a, 32b) and a low-pressure accumulator (14a, 14b), an inlet valve (6a-6d) and an outlet valve (7a-7d) for each wheel brake (8, 9, 10, 11), valves (34a, 34b; 134a, 134b) connected to the pumps (32a, 32b), and a control and regulation unit (110, 210). A valve arrangement (23a, 23b) establishes for each brake circuit (I, II) a connection from the pressure chamber (17, 18) of the master cylinder (2) to the modulator admission pressure line (13a, 13b; 113a, 113b) and disconnects the connection when unenergized, the valve arrangement (23a, 23b) preventing the pressure source (5) from being subjected to pressure from the pressure chambers (17, 18).
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: December 8, 2015
    Assignee: CONTINENTAL TEVES AG & CO. OHG
    Inventors: Harald Biller, Peter Stauder, Marco Beisier, Hans-Jörg Feigel
  • Patent number: 9145119
    Abstract: A brake system includes a hydraulic actuating unit, which can be actuated by way of a brake pedal, a travel simulator interacting with the hydraulic actuating unit, a pressure medium reservoir under atmospheric pressure assigned to the hydraulic actuating unit, a first electrically controllable pressure supply device, a second electrically controllable pressure supply device, an electronic control unit and an electronically controllable pressure modulation device for setting wheel-specific brake pressures. The brake system preferably operates in a “brake-by-wire” mode but can also operate in a fallback mode. The second electrically controllable pressure supply device can provide boost volume during braking in a fallback mode.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: September 29, 2015
    Assignee: CONTINENTAL TEVES AG & CO. OHG
    Inventors: Harald Biller, Hans-Jörg Feigel, Stefan A. Drumm, Steffen Linkenbach, Marco Besier
  • Publication number: 20150121861
    Abstract: A cup shaped spring retainer is slidably disposed within a cup shaped piston, encapsulating a spring therebetween. The side wall of the spring retainer presents a plurality of recesses and a plurality of slots defining a plurality of fingers. A tang, projects radially outward at the distal end of each of the fingers to engage a retaining ring within the piston in a latch position. The combination of the spring retainer and the piston provide an arrangement whereby all of the fingers may be compressed with the spring retainer outside of the piston to an insert position with the tangs disposed in gripping engagement with the spring. After inserting the compressed spring retainer into the piston, the radial compression the of the fingers may be released to allow the fingers to expand from the insert position to the latch position at which point the deflection of the fingers is discontinued.
    Type: Application
    Filed: February 20, 2014
    Publication date: May 7, 2015
    Inventor: Richard James Kriz, II
  • Publication number: 20150108249
    Abstract: A hydraulic circuit for a jet engine thrust reverser is disclosed. The hydraulic circuit may comprise a primary hydraulic actuator cylinder assembly and a secondary hydraulic actuator cylinder assembly. The primary hydraulic actuator cylinder assembly may be hydraulically coupled to the secondary hydraulic actuator cylinder assembly, in a master-slave relationship, and the secondary hydraulic actuator cylinder assembly may drive a thrust reverser blocker door. The primary hydraulic actuator cylinder assembly may comprise a rod, and the rod may comprise a channel through which hydraulic fluid is capable of flowing. The hydraulic circuit may further comprise a group of secondary hydraulic actuator cylinder assemblies, wherein the group of secondary hydraulic actuator cylinder assemblies may be coupled to the primary hydraulic actuator cylinder assembly.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Applicant: ROHR, INC.
    Inventor: NORMAN JOHN JAMES
  • Patent number: 8978377
    Abstract: A cylinder device is characterized in: that it selectively realizes an operation-force dependent pressurizing state where brake fluid is pressurized by operation force and a high-pressure-source-pressure dependent pressurizing state where brake fluid is pressurized depending on a pressure from a high-pressure-source device; that there are defined an inter-piston chamber in front of an input piston by an insertion of the input piston into a pressurizing piston, an input chamber in the back of a flange of the pressurizing piston at the pressure from the high pressure source device, and an opposing chamber in front of the flange; and that the cylinder device has a mechanism elastically pressurizing an reaction force chamber formed by a communication between the inter-piston and the opposing chambers, and a mechanism switching communication/not-communication state between the reaction chamber and a reservoir.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: March 17, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hiroshi Isono
  • Publication number: 20150061358
    Abstract: A master cylinder 5 includes: a first liquid chamber 51 generating a liquid pressure in response to a brake operation of a driver; and a second liquid chamber 52 communicated with a reservoir 4 and connected to a suction port 70 of a pump 7. In a state in which the reservoir 4 and a suction section 70 of the pump 7 are communicated via the second liquid chamber 52, a liquid pressure of the first liquid chamber 51 can create a wheel cylinder liquid pressure.
    Type: Application
    Filed: January 31, 2013
    Publication date: March 5, 2015
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Ryohei Maruo, Chiharu Nakazawa
  • Publication number: 20150000265
    Abstract: Disclosed herein is a hydraulic master cylinder body having a bore defined at least in part by a bore wall, wherein the bore wall includes an opening for hydraulic fluid to be passed into the bore, and a piston assembly situated at least substantially in the bore, the assembly having a piston with a piston body and at least one cup seal situated substantially around the piston body, the cup seal situated adjacent to the bore wall so as to be in sealing engagement therewith, and a back-up ring that is situated about the piston body, wherein the back-up ring is positioned to at least partially cover a portion of the cup seal that is adjacent to the bore wall and to prevent at least a portion of the cup seal from contacting the bore wall and the opening for hydraulic fluid during piston actuation.
    Type: Application
    Filed: September 9, 2014
    Publication date: January 1, 2015
    Inventors: Jeffrey S. Gohr, Vesa Ahola, James Dimsey
  • Publication number: 20140345270
    Abstract: A brake booster device for a braking system of a vehicle includes: a booster body to which a brake-boosting force is exertable by an actuator device; a first piston rod component to which the brake-boosting force is at least partially transmittable via a first contact with the booster body, the first piston rod component contacting the booster body at a first contact surface such that the first piston rod component is at least partially adjustable; and a second piston rod component to which the brake-boosting force is at least partially transmittable via a second contact with the booster body, the second piston rod component contacting the booster body at a second contact surface such that the second piston rod component is adjustable together with the first piston rod component.
    Type: Application
    Filed: August 7, 2012
    Publication date: November 27, 2014
    Inventors: Reinhard Weiberle, Karl-Heinz Willmann, Andreas Birkheim, Matthias Kistner
  • Publication number: 20140345271
    Abstract: A hydraulic brake system for braking a vehicle, including a master cylinder device having a fluid-flow permission mechanism that permits a flow of a working fluid between an inter-piston chamber and a low-pressure source, wherein, when a pressure of the working fluid to be supplied to a brake device exceeds a set pressure upon advancing in association with an advancing movement of a brake operation member, a closing and opening mechanism for hermetically closing the inter-piston chamber and opening an opposing chamber to the low-pressure source is controlled so as to hermetically close the inter-piston chamber, while, when the pressure of the working fluid becomes lower than a set pressure upon retracting in association with a retracting movement of the brake operation member, the fluid-flow permission mechanism is controlled so as to permit the flow of the working fluid between the inter-piston chamber and the low-pressure source.
    Type: Application
    Filed: January 13, 2012
    Publication date: November 27, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Isono, Yasuji Mizutani
  • Patent number: 8886430
    Abstract: The invention relates to a method for operating a brake-boosted brake system of a vehicle, comprising the following steps: determining braking force information (28) with respect to a driver braking force (Ff), which is applied to the actuating element (10) when an actuating element (10) of the brake system is actuated by a driver of the vehicle; determining an actual speed parameter (34) with respect to an adjustment speed of a servo piston (16) of the brake system to which a servo power (Fu) of a brake booster (14) of the brake system is applied; determining a relative speed parameter (40) with respect to a relative speed of the servo piston (16) relative to the input piston (12); establishing a target speed parameter (50) with respect to the adjustment speed of the servo piston (16) taking into account the determined braking force information (28), the determined actual speed parameter (34) and the determined relative speed parameter (40), and actuating the brake booster (14) taking the established target
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: November 11, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Vollert, Frank Kneip, Dirk Mahnkopf
  • Publication number: 20140325978
    Abstract: A hydraulic brake apparatus, a movable barrier apparatus, a hydraulic brake kit, a method of stopping movement of a movable barrier, and a method installing a hydraulic brake assembly are described herein. A selectively operable piston mechanism converts rotation of a drive shaft of a movable barrier into hydraulic pressure used to operate a brake configured to stop movement of the drive shaft.
    Type: Application
    Filed: July 21, 2014
    Publication date: November 6, 2014
    Inventors: Roger William Lhotak, Brian Roy Skotty
  • Publication number: 20140298797
    Abstract: Disclosed is a braking device in which all multiple ports (for example, input ports (15c, 15d) and output ports (15a, 15b)) provided on a front surface portion (30) of a base (10) of a master cylinder (1), connector connection ports (23a, 24a) of connectors (23, 24) that electrically conducts an electrical part accommodated in a housing (20), and a pipe connection port (3c) to which a hose is connected of a reservoir (3) are arranged toward front of a vehicle when a starting device (A1) is assembled in the vehicle.
    Type: Application
    Filed: November 21, 2012
    Publication date: October 9, 2014
    Inventors: Kazuaki Murayama, Yoshiteru Matsunaga, Motoyasu Nakamura
  • Publication number: 20140283512
    Abstract: A hydraulic system (1) is provided comprising a pressure source (2), an output (3), and a pressure booster (6) arranged between the pressure source (2) and the output (3). The operational possibilities of such a system should be extended. To this end inactivating means are provided inactivating or activating said pressure booster.
    Type: Application
    Filed: March 21, 2014
    Publication date: September 25, 2014
    Inventors: Jan Maiboll Buhl, Jorgen Mads Clausen, Christen Espersen, Leif Hansen, Jacob Madsen, Brian Petersen, Svend Erik Thomsen, Jorgen P. Todsen
  • Publication number: 20140165553
    Abstract: A primary piston composed of a skirt and an intermediate back wall having a rear face receiving the servobrake thrustrod and a forward face for the telescoping rod and the spring pushing the secondary piston. The front of the skirt has longitudinal grooves open in front and closed in the rear. The thickness of the skirt beneath the grooves and the part of the skirt between two successive grooves in the peripheral direction foam a front face enabling the principal piston to push the secondary piston. The principal piston is made of a single piece of plastic material.
    Type: Application
    Filed: December 1, 2011
    Publication date: June 19, 2014
    Inventors: Marc Rodriguez, Olivier Bernadat, Laurent Lhuillier, Marc Noblet, Julien Gateau, Daniel Grech, Carole Charpentier
  • Publication number: 20140165554
    Abstract: A master cylinder assembly of the type comprises a housing (20) disposed along an axis (A) defining a chamber (22) having a cylindrical shape extending horizontally between an open end and a closed end. A first cylinder (42) and a second cylinder (44) are disposed for sliding movement axially along the axis. Each of the cylinders includes a cylindrical wall (48) defining a cylindrical bore (52). A piston (56) is disposed in each of the cylindrical bores. The cylindrical wall of each cylinder includes a cylinder ramp (70) to define a cylinder ramp shoulder (74). Each piston includes a piston ramp (76) to define a piston ramp shoulder (80). The piston ramp shoulder (80) of each piston and the cylinder ramp shoulder (74) of each cylinder radially engage one another in an assembled position to allow the cylinders (42, 44) and the pistons (56) to abut one another during the sliding movement axially along the axis within the chamber of the housing.
    Type: Application
    Filed: June 17, 2011
    Publication date: June 19, 2014
    Applicant: BWI (Shanghai) Co., Ltd.
    Inventors: Dongqiang Luo, Richard J. Kriz, II
  • Publication number: 20140150420
    Abstract: A master cylinder for a controlled brake system, including at least one piston which is displaceable in a housing and is sealed with respect to a pressure chamber by a sealing element arranged in an annular groove of the housing, which pressure chamber is connectable to an unpressurized supply chamber by control passages formed in the piston. The piston 46 is formed in at least two parts, including a main body and an annular control element, the control passages being provided in the control element.
    Type: Application
    Filed: May 4, 2012
    Publication date: June 5, 2014
    Applicant: Continental Teves AG & Co. OHG
    Inventors: Harald König, Peter Drott, Udo Jungmann, Andreas Bischoff
  • Publication number: 20140060037
    Abstract: Master-cylinder seal housed in a groove around a piston has a core connected to three annular and concentric lips. The core rests against a side of the groove and has: a surface provided with an interior edge followed by a peripheral platter cut by at least one channel, and an exterior crown provided with a connection zone formed by an interruption in the crown and deformable due to pressure within the seal to recreate the crown's continuity and impermeability while facilitating purging the brake system when there is no pressure in the channel and the connection zone.
    Type: Application
    Filed: December 12, 2011
    Publication date: March 6, 2014
    Inventors: Laurent Lhuillier, Marc Noblet, Olivier Bernadat, Serge Aquino, Julien Gateau, Marc Rodriguez
  • Publication number: 20140026556
    Abstract: A brake booster for a motor vehicle brake system, comprises a force input element that is or can be connected to a brake pedal, a chamber arrangement with a working chamber and a vacuum chamber that are separated from one another by a movable wall, and a control device with a control valve, by which the working chamber can be optionally connected to the vacuum chamber or to the surrounding atmosphere as a result of a displacement of the force input element, wherein the control valve has a control valve housing, which is coupled to the movable wall and in which the force input element is guided in a displaceable manner against the action of a return spring together with a control piston, and wherein the control valve further comprises a valve element that is optionally prestressed into sealed abutment on a first valve seat provided on the control valve housing or into sealed abutment on a second valve seat provided on the control piston of the control valve by a tension spring.
    Type: Application
    Filed: March 28, 2012
    Publication date: January 30, 2014
    Applicant: LUCAS AUTOMOTIVE GMBH
    Inventors: David Lopez Larequi, Hans Martin Giese
  • Publication number: 20140015309
    Abstract: A pressure transmission device for a power-assisted braking system of a vehicle; at its inlet, the pressure transmission device being connectible in a hydraulically operative manner to a master brake cylinder of the power-assisted braking system, and at its outlet, the pressure transmission device being connectible in a hydraulically operative manner to a wheel brake cylinder of the power-assisted braking system; the pressure transmission device including an accumulator and a linkage, which transmits a pressure difference between the inlet and the outlet to the accumulator and stores it in this.
    Type: Application
    Filed: October 28, 2011
    Publication date: January 16, 2014
    Inventor: Jochen Mayer
  • Publication number: 20140000254
    Abstract: A vehicular hydraulic-pressure-generation device wherein a first bush compressively deforms due to pressure from a simulator piston that moves when hydraulic pressure produced when a brake pedal is depressed is transmitted into a cylinder part. Said vehicular hydraulic-pressure-generation device thus creates artificial reaction-force characteristics with respect to the position of the brake pedal. The aforementioned first bush has a third elastic modulus, which is smaller than a second elastic modulus, and is provided in parallel with a first return spring. The compressive deformation of the first bush occurs over a second region that overlaps a first region in which compressive deformation of the return spring primarily occurs. This makes the brake pedal move more smoothly, reducing the feeling of incongruity resulting from a V-shaped singularity in the reaction-force characteristics with respect to brake pedal position.
    Type: Application
    Filed: March 9, 2012
    Publication date: January 2, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kazuaki Murayama, Arata Inoue, Takaaki Ohnishi, Nobutake Hyodo
  • Publication number: 20130312404
    Abstract: The brake system includes a pedal, a pedal simulator, and a brake pedal unit. The brake pedal unit includes an input piston connected to the brake pedal for operating the pedal simulator during a normal braking mode. The brake pedal unit further includes first and second output pistons actuated by the input piston during a manual push through mode such that the first output piston generates brake actuating pressure at a first output of the brake pedal unit, and the second output piston generates actuating pressure at a second output of the brake pedal unit. The brake system further includes a hydraulic pressure source for supplying fluid at a controlled boost pressure, and a hydraulic control unit adapted to be hydraulically connected to the brake pedal unit and the hydraulic pressure source.
    Type: Application
    Filed: October 26, 2011
    Publication date: November 28, 2013
    Applicants: KELSEY-HAYES COMPANY
    Inventors: Blaise J. Ganzel, Andreas Borsch, Michael Geider, Axel Rüdell
  • Publication number: 20130305706
    Abstract: A brake booster includes an input element actuatable by a driver, an actuator for generating a support force, an output element to which an input or support force may be applied and through which an actuating force may be applied to a piston of a brake master cylinder, a force transmission unit having elastic properties, situated between the input element and the actuator, and the output element, and transmitting the input and/or support forces to the output element, and a preload unit acting on the force transmission unit to apply a force couple to the force transmission unit when the brake booster is in idle mode. A method for operating the brake booster includes generating a support force prior to a braking intent to be anticipated or immediately after detection of a braking intent, in a time span before or immediately after detection of an actuation of the input element.
    Type: Application
    Filed: September 5, 2011
    Publication date: November 21, 2013
    Inventor: Dirk Mahnkopf
  • Publication number: 20130276442
    Abstract: A hydraulic block of a hydraulic multi-circuit vehicle braking system having braking force regulation includes an installation space for a hydraulic reservoir of the vehicle braking system that is isolated from a braking circuit, for example by closing a connecting line using a pressed-in ball. The installation space is connected to another braking circuit via an additional bore, wherein a larger storage volume is available to the braking circuit as a result. The necessary changes to the hydraulic block are small.
    Type: Application
    Filed: July 19, 2011
    Publication date: October 24, 2013
    Applicant: Robert Bosch GmbH
    Inventors: Volkmar Schlotter, Michael Kunz, Oliver Schmautz
  • Publication number: 20130269337
    Abstract: A brake booster includes an input element actuatable by a driver, an actuator for generating a support force, an output element to which an input or support force may be applied and via which an actuating force may be applied to a piston of a brake master cylinder, and a force transmission unit having elastic properties, situated between the input element and the actuator, and the output element, and transmitting the input and/or support forces to the output element. An air gap, which in idle mode is smaller or larger than a desired air gap, is provided between the input element and the force transmission unit. A method for operating the brake booster includes generating a support force prior to a braking intent to be anticipated or immediately after detection of a braking intent, in a time span before or immediately after detection of an actuation of the input element.
    Type: Application
    Filed: September 5, 2011
    Publication date: October 17, 2013
    Inventor: Dirk Mahnkopf
  • Publication number: 20130213033
    Abstract: A master cylinder for a regulated braking system having at least one piston, which is movable in a housing and which is sealed from a pressure chamber by a sealing element arranged in a ring groove of the housing, which can be connected to an unpressurized supply chamber by control passages designed in the pistons. In order to reduce the flow resistance of the control passages at the same dead stroke, the control passages have a control edge designed parallel to a piston end face of at least one of the pistons.
    Type: Application
    Filed: December 15, 2010
    Publication date: August 22, 2013
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Harald Konig, Andreas Bischoff, Peter Drott, Makato Inaba, Heinrich Kreh, Udo Jungmann, Filip Janosek
  • Publication number: 20130213025
    Abstract: A hydraulic pressure generator for a vehicle brake system comprises a piston and a cylinder that movably accommodates the piston. The piston defines a first hydraulic chamber and a second hydraulic chamber in the cylinder on opposite piston sides, wherein each hydraulic chamber has a hydraulic inlet and a hydraulic outlet. An actuating unit is able to put the piston into a back-and-forth motion so that an intake stroke with regard to the first hydraulic chamber corresponds to a discharge stroke with regard to the second hydraulic chamber, and vice versa.
    Type: Application
    Filed: May 23, 2011
    Publication date: August 22, 2013
    Applicant: LUCAS AUTOMOTIVE GMBH
    Inventor: Christoph Linden
  • Publication number: 20130205772
    Abstract: A motor vehicle hydraulic brake system master cylinder, having at least one piston which is arranged in a housing and displaceable along an axis as a result of brake actuation and to which a pressure chamber which can be connected to wheel brakes, and a refill chamber is assigned, wherein the pressure chamber in the non-actuated state can be connected to a fluid reservoir via a compensating bore and on actuation of the brake can be isolated therefrom by means of a cup seal arranged on the piston in order to build up pressure. The master cylinder having a cup seal arranged in a radially open, encircling groove of the piston which groove is formed by a first and a second radially encircling projection, wherein when the brake actuation is released additional fluid is drawn from the refill chamber in the direction of the pressure chamber via the second projection.
    Type: Application
    Filed: April 28, 2011
    Publication date: August 15, 2013
    Applicant: CONTINENTAL TEVES AG & CO. OHG
    Inventors: Volker Posch, Harald König, Udo Jungmann
  • Publication number: 20130167526
    Abstract: A rear brake system has a rod extending from a master cylinder that inputs the operational force of a brake pedal to the master cylinder, a coil spring coaxially arranged with the rod and providing reaction force to return the brake pedal to the state before operating the brake pedal, a reaction adjustment mechanism provided on the rod and configured so as to be movable in the axial direction of the rod. According to the position of the reaction adjustment mechanism in the axial direction of the rod, shrinkage of the coil spring in the axial direction of the rod can be adjusted.
    Type: Application
    Filed: December 16, 2012
    Publication date: July 4, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventor: HONDA MOTOR CO., LTD.
  • Publication number: 20130140877
    Abstract: A regulatable brake booster and to a method and a control unit for operating same. Using the method for operating the brake booster, as well as the embodiment of the brake booster, a reaction on a driver may be avoided or reduced by an offset of the brake pedal or by a changed operating force in response to a change in the supporting force. The change in the supporting force is particularly an adjustment of the braking effect of an hydraulic braking system to the braking effect of a regenerative braking system.
    Type: Application
    Filed: March 25, 2011
    Publication date: June 6, 2013
    Inventor: Dirk Mahnkopf
  • Publication number: 20130127238
    Abstract: A vehicle brake device includes a master cylinder having a master piston moved by servo pressure in a servo chamber and master pressure of a master chamber is changed by movement of the master piston. A mechanical servo pressure generating unit is connected to a high pressure source and the servo chamber, and generates a servo pressure within the servo chamber according to pilot pressure within a pilot chamber based on brake fluid pressure of the high pressure source. An electrical pilot pressure generating unit is connected to the pilot chamber and generates desired pilot pressure within the pilot chamber, and a master chamber-to-pilot chamber brake fluid line connects the master chamber with the pilot chamber so pilot pressure is generated by the pilot pressure generating unit during normal operation of a power supply system, and the master pressure is used as pilot pressure when the power supply system fails.
    Type: Application
    Filed: November 23, 2012
    Publication date: May 23, 2013
    Applicant: ADVICS CO., LTD.
    Inventor: ADVICS CO., LTD.
  • Publication number: 20130086900
    Abstract: Disclosed is a brake master cylinder configured to sense a variation in magnetic flux in accordance with operation of a piston installed with a magnet, and thus to control activation of brake lamps. The brake master cylinder includes a cylinder body connected to a booster, first and second pistons to reciprocate in the cylinder body, a Hall sensor installed at an outside of the cylinder body, to sense operation of the pistons, for control of activation of brake lamps, a coupling shaft formed at an end of the second piston facing the first piston, and a magnet ring assembly installed at the coupling shaft such that the magnet ring assembly faces the Hall sensor. The magnet ring assembly includes a bushing centrally formed with a fitting hole to receive the coupling shaft, and a ring-shaped magnet fitted around the bushing, to exert magnetic force on the Hall sensor.
    Type: Application
    Filed: September 14, 2012
    Publication date: April 11, 2013
    Applicant: MANDO CORPORATION
    Inventor: Tae H. KIM
  • Publication number: 20130055710
    Abstract: A booster assembly includes a booster provided at an engine room partitioned from a passenger compartment by a partition plate, a master cylinder disposed outwardly of a front side of the front cell, and fastening members to simultaneously mount the booster and master cylinder to the vehicle. Each fastening member includes a tube extending through the booster and having a front portion extending through a flange of the master cylinder, nuts fastened to respective front portions of the tubes, to fasten the master cylinder to the booster, through-bolts extending through respective tubes and the partition plate, to be mounted to the front portions of respective tubes, and a non-circular coupler formed at a rear portion of each tube, to prevent the tube from rotating when the corresponding nut is fastened to the tube. The rear cell is provided with a hole having a shape mating with the non-circular coupler.
    Type: Application
    Filed: August 30, 2012
    Publication date: March 7, 2013
    Applicant: MANDO CORPORATION
    Inventors: Sung Je LEE, Young Jun SON, Chang Bok KO
  • Publication number: 20120324881
    Abstract: Disclosed herein are a mounting structure for boosters and a booster assembly for vehicles having the same. The mounting structure for boosters to mount a booster provided with a casing formed by hermetically connecting a front cell and a rear cell includes a front bolt passing through the front cell, the inside of the front bolt being hollow, a tube having a cylindrical shape, the inside of which is hollow in the lengthwise direction, and provided with a front part being opposite the front bolt to communicate with the hollow of the front bolt and a rear part crossing the casing to pass through the rear cell, a support washer installed on the tube and connected to the rear portion of the front bolt to surround the outer circumferential surface of the rear portion of the front bolt, and a sealing member provided between the tube and the support washer.
    Type: Application
    Filed: June 22, 2012
    Publication date: December 27, 2012
    Inventor: Tae Hwan KIM
  • Publication number: 20120265417
    Abstract: The invention relates to a method for operating a brake-boosted brake system of a vehicle, comprising the following steps: determining braking force information (28) with respect to a driver braking force (Ff), which is applied to the actuating element (10) when an actuating element (10) of the brake system is actuated by a driver of the vehicle; determining an actual speed parameter (34) with respect to an adjustment speed of a servo piston (16) of the brake system to which a servo power (Fu) of a brake booster (14) of the brake system is applied; determining a relative speed parameter (40) with respect to a relative speed of the servo piston (16) relative to the input piston (12); establishing a target speed parameter (50) with respect to the adjustment speed of the servo piston (16) taking into account the determined braking force information (28), the determined actual speed parameter (34) and the determined relative speed parameter (40), and actuating the brake booster (14) taking the established target
    Type: Application
    Filed: August 11, 2010
    Publication date: October 18, 2012
    Applicant: ROBERT BOSCH GMBH
    Inventors: Herbert Vollert, Frank Kneip, Dirk Mahnkopf
  • Publication number: 20120247099
    Abstract: A master cylinder includes a cylinder body formed with an annular concave portion at a position surrounding a space where a piston is inserted so as to fit in the cylinder body. An annular cup seal is provided in the annular concave portion and includes an inner lip portion coming into sliding contact with the outer periphery of a piston, an outer lip portion provided on the outside thereof, and a base portion arranged along a first inner wall surface of the annular concave portion. The cup seal further includes a plurality of projecting portions coming into abutment with a second inner wall surface of the annular concave portion. Clearance areas are formed between the first inner wall surface and the base portion at positions opposing the abutting portions between the projecting portions and the second inner wall surface.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 4, 2012
    Applicant: ADVICS CO., LTD.
    Inventors: Takafumi Omune, Koji Suzuki
  • Publication number: 20120204552
    Abstract: Disclosed is a reservoir tank, comprising a connector body installed on a master cylinder, a hose connection tube body, which is arranged protruding from the edge of the connector body and has a hose connected with the reservoir tank connected thereto, and a conveying arm guide section as an interference preventing section, which is arranged on the connector body and prevents interference with the conveying jig when the connector body is supported by a conveying jig. When a conveying arm of the conveying jig abuts the conveying arm guide section and supports the connector body, the conveying arm will not interfere with the hose connection tube body due to the conveying arm guide section.
    Type: Application
    Filed: October 6, 2010
    Publication date: August 16, 2012
    Applicant: BOSCH CORPORATION
    Inventor: Toshiyuki Takahashi
  • Publication number: 20120186245
    Abstract: The invention relates to an assembly including a pressure medium reservoir and a manually actuable master cylinder, in particular for a hydraulic motorcycle brake system, wherein the pressure medium reservoir is connected permanently to the master cylinder by at least one pressure medium connection, wherein the master cylinder has at least one pressure chamber, which can be connected to wheel brakes. According to the invention, provision is made for a protection device to be arranged in the region of the pressure medium connection, the device preventing air from penetrating into the pressure chamber and allowing air to escape in the direction of the pressure medium reservoir.
    Type: Application
    Filed: July 5, 2010
    Publication date: July 26, 2012
    Applicant: Continental Teves AG & Co. OHG
    Inventors: Stefan A. Schmitt, Peter Tandler, Werner Krebs, Stephan Schlicht, Hans-Jürgen Neumann, Christoph Schiel
  • Patent number: 8220260
    Abstract: A fluid transmission that employs a fluid to transmit a force, comprising a conduit for the fluid made from heat shrink polymer tubing, wherein at least a portion of the heat shrink polymer tubing is shrunken, whereby the force can be transmitted by the fluid from a first or proximal end of the conduit to a second or distal end of the conduit. Also, an actuator and methods for manufacturing the transmission and actuator.
    Type: Grant
    Filed: September 4, 2006
    Date of Patent: July 17, 2012
    Inventor: Martin Russell Harris