Having Signal, Indicator Or Recorder Of Apparatus Condition Patents (Class 60/534)
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Patent number: 11225236Abstract: An electric brake booster is equipped with a pressure balance detecting device, which generates braking force. The electric brake booster includes: a first pressure device, which generates pressure as the driver manipulates the brake pedal; a second pressure device, which generates the same pressure as the first pressure device and generates driving power; a master chamber, which receives resultant force of brake pedal effort and driving power of a motor from a master piston that moves in the second pressure device; and a pressure balance detecting device, which detects whether a predetermined ratio is maintained between the pressure of the first pressure device applied to one side of the pressure balance detecting device and the pressure of the master chamber applied to the other side of the pressure balance detecting device.Type: GrantFiled: November 19, 2019Date of Patent: January 18, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Joung-Hee Lee, Won-Seok Yim, Gwan-Hyeong Cha, Ung-Hee Shin, Se-Ra Hwang, Sang-Hyun Shim
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Patent number: 10974845Abstract: A fluid reservoir for a vehicle includes a reservoir body with a sensing chamber portion, a neck portion, and a reserve chamber portion. The neck portion is connected to the sensing chamber portion and the reserve chamber portion is connected to the sensing chamber portion by the neck portion. The neck portion defines a neck portion volume that is smaller a volume defined by the sensing chamber to limit slosh in the sensing chamber when a reserve volume of fluid is present within the fluid reservoir. Windscreen washing systems and aircraft having fluid reservoirs are also described.Type: GrantFiled: April 30, 2019Date of Patent: April 13, 2021Assignee: ROSEMOUNT AEROSPACE, INC.Inventors: Venkata Anil Kumar Mothe, Jai Kumar Gowda, Stephen D. Rock
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Patent number: 10647307Abstract: Provided is an electric booster which can be downsized by enhancing space efficiency while reducing the effect of a magnetic field from outside on a magnetic sensor by means of a magnetic shield. The stroke amount of an input plunger 29 connected to a brake pedal 6 is detected by a stroke detection sensor. The operation of an electric motor is controlled by controller on the basis of the stroke amount of the input plunger to thrust a primary piston through a ball screw mechanism, and brake fluid pressure is thus generated by a master cylinder 4. The stroke detection device uses a Hall IC to detect magnetic flux densities from first and second magnet members mounted on the input plunger to obtain the stroke of the input plunger. The first and second magnet members and the Hall IC are disposed inside a linear-motion member formed of a cylindrical magnetic body of the ball screw mechanism to be magnetically shielded.Type: GrantFiled: May 13, 2016Date of Patent: May 12, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Rikiya Yoshizu, Shinji Shimizu
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Patent number: 10518309Abstract: An extrusion press die-slide device is equipped with: a fixed frame; a moveable frame that can move linearly but which is supported by the fixed frame in a non-rotatable manner; a first motion conversion mechanism that converts input rotational motion to linear motion and outputs the same to cause the moveable frame to move linearly with respect to the fixed frame; and a second motion conversion mechanism attached to the moveable frame and equipped with a pusher to impart a pressing force to a die of the extrusion press, and which transmits the input rotational motion to the first motion conversion mechanism and converts the input rotational motion to linear motion and outputs the same to cause the pusher to move linearly with respect to the moveable frame.Type: GrantFiled: June 30, 2015Date of Patent: December 31, 2019Assignee: Ube Machinery Corporation, Ltd.Inventors: Takeharu Yamamoto, Sho Nonoue
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Patent number: 10416055Abstract: An improved measurement method and a corresponding measurement device are provided that measure the edge strength of plate-shaped elements made of brittle-fracture material. For this purpose, a long sample is drawn apart at the short edges, wherein the force transmission points lie next to the center of gravity of the base surface of the sample.Type: GrantFiled: February 28, 2017Date of Patent: September 17, 2019Assignee: SCHOTT AGInventors: Markus Heiss-Chouquet, Kurt Nattermann, Clemens Ottermann
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Patent number: 10343664Abstract: A method is disclosed for controlling operation of a motor-driven brake boost assist system of a vehicle braking system during a loss of battery power to the brake boost assist system. The method may involve detecting a condition during which a power loss event to the brake boost assist system has occurred, and a motor associated with the brake boost assist system is being driven by linear movement of a component within the brake boost assist system in response to fluid pressure developed within the brake boost assist system. The method further involves using a voltage generated by the motor during the power loss event to help initiate a dynamic braking action on the motor.Type: GrantFiled: April 28, 2017Date of Patent: July 9, 2019Assignee: Veoneer US, Inc.Inventor: Curt M. Roberts
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Patent number: 9988022Abstract: A sensor device for detecting a displacement of a master brake cylinder piston of a master brake cylinder situated on and/or in a hydraulic unit includes: a sensor element; an evaluation electronics system; a first molded part on or in which the at least one sensor element is situated, the first molded part including at least one first electrical contact element; and a second molded part. The at least one first electrical contact element contacts at least one second electrical contact element of the second molded part which is at least partially introduced into the second opening.Type: GrantFiled: November 18, 2015Date of Patent: June 5, 2018Assignee: ROBERT BOSCH GMBHInventors: Matthias Mayr, Bernd Lutz, Juergen Tandler, Andreas Weh
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Patent number: 9896078Abstract: A master brake cylinder assembly of a motor vehicle brake system includes a fluid reservoir and a master brake cylinder. The fluid reservoir and the master brake cylinder are fluidically coupled to each other by means of at least one fluid channel. At least one filter element is arranged within the master brake cylinder assembly in such a way that a brake fluid volume exchanged between the master cylinder and the fluid reservoir during operation flows through the filter element. The filter element is designed to collect dirt particles present in the brake fluid.Type: GrantFiled: July 18, 2014Date of Patent: February 20, 2018Assignee: LUCAS AUTOMOTIVE GMBHInventors: Daniel Noll, Lothar Zeuner
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Patent number: 9797416Abstract: A master brake cylinder arrangement includes at least one piston arrangement with a piston movably guided in a receiving bore in a master brake cylinder housing. The piston, together with the receiving bore, delimits a pressure chamber which is in fluid connection with a hydraulic brake circuit and may be moved along a movement axis between an initial position and an actuation position. A position detecting device detects movement of the piston caused by actuation is provided within the receiving bore. The position detecting device has a sensor element, which is movable as a function of a piston movement, and a position detecting sensor, which is arranged fixed on the master brake cylinder housing. The sensor element is received and guided in the master brake cylinder housing independently of the piston and is capable of interacting with the piston for deflection as a function of the piston movement.Type: GrantFiled: November 14, 2013Date of Patent: October 24, 2017Assignee: LUCAS AUTOMOTIVE GMBHInventors: Hans-Martin Giese, Torsten Petry, David Lopez-Larequi
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Patent number: 9371064Abstract: A position sensing assembly adapted for use with a master cylinder to measure travel of a piston of the master cylinder via a magnet operatively coupled to the piston thereof for movement therewith between a zero brake apply position and a full brake apply position. According to one embodiment, the position sensing assembly includes a housing adapted to be attached to a master cylinder housing and a flux concentrator operatively disposed with the position sensing assembly housing. The flux concentrator includes a first end, an intermediate body, and a second end. At least one of the first end and the second end defines a longitudinal plane and at least a portion of the intermediate body is oriented at an angle relative to the longitudinal plane whereby the position sensing assembly is adapted to measure the travel of the piston of the master cylinder via the magnet.Type: GrantFiled: June 30, 2011Date of Patent: June 21, 2016Assignee: Kelsey-Hayes CompanyInventor: Jeremiah Gonyou
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Patent number: 8997481Abstract: In a reservoir tank (5) of the present invention, a hydraulic fluid movement deterring wall (26) is disposed integrally with an upper half body (9) and extending toward a radial direction center of a cylindrical upper half body neck section (24) on a curved portion at a boundary between an inner peripheral surface (24a) of the cylindrical upper half body neck section (24) and an inner surface (25a1) of a ceiling portion (25a) of an upper half body trunk section (25) or on the inner peripheral surface (24a) of the upper half body neck section (24). The movement of the hydraulic fluid frontward (toward a hydraulic fluid inlet (10)) in a hydraulic fluid storage chamber 13 at a time when the reservoir tank (5) is tilted frontward is controlled by this hydraulic fluid movement deterring wall (26).Type: GrantFiled: September 16, 2009Date of Patent: April 7, 2015Assignee: Bosch CorporationInventor: Toshiyuki Takahashi
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Publication number: 20150020520Abstract: A method for determining a driving characteristic of an analogized or analog-controlled hydraulic valve of a motor vehicle hydraulic brake system in which a brake pressure generated with the aid of an electrically controllable, electric-motor-driven pressure supply device, is conducted to a wheel brake via an inlet valve and can be conducted via an outlet valve from the wheel brake into a pressure medium container. The pressure supply device and the inlet valves, and outlet valves, can be controlled by an electronic control unit. For determining the control characteristic of an analogized or analog-controlled inlet or outlet valve, a brake pressure is generated by the control unit via the pressure supply device, and the brake pressure is determined by a pressure sensor associated with the pressure supply device. The determined brake pressure and an associated valve control variable are stored as a calibration point of the control characteristic.Type: ApplicationFiled: March 5, 2013Publication date: January 22, 2015Inventors: Hans-Jörg Feigel, Harald Biller, Jan Hoffmann, Christian Courth
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Patent number: 8915079Abstract: A brake actuator unit capable of improving the pedal feeling. The brake actuator unit includes a housing, a master cylinder connected to one end of the housing and provided therein with first and second pistons arranged in parallel to each other, an operating fluid reservoir coupled to an upper portion of the master cylinder to store operating fluid, a simulator accommodated in the master cylinder to provide repulsive force to a pedal, an input shaft moving back and forth according to an operation of the pedal, a control plunger slidably moving back and forth together with the input shaft, first and second output shafts positioned corresponding to first and second pistons to move back and forth together with the control plunger, and a pedal displacement sensor connected to the input shaft.Type: GrantFiled: April 22, 2011Date of Patent: December 23, 2014Assignee: Mando CorporationInventors: Seung Hyup Bae, Hong Ki Kim, Chang Bok Ko
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Patent number: 8857175Abstract: The present invention provides an improved two-stage actuator (20) that broadly includes: a first cylinder (21); an intensifier piston (22) mounted in the first cylinder for sealed sliding movement therealong, the intensifier piston having a large-area surface (26) exposed to ambient pressure, and having a small-area surface (30); a second cylinder (23) having an end wall (36); an actuator piston (24) mounted in the second cylinder for sealed sliding movement therealong; an actuator rod (39) connected to the actuator piston for movement therewith and having an intermediate portion sealingly penetrating the second cylinder end wall; the actuator piston having a large-area surface (27) and a small-area surface (37), an intermediate chamber (35) communicating the intensifier piston small-area surface with the actuator piston large-area surface; and an incompressible fluid in the chamber; whereby ambient pressure (i.e.Type: GrantFiled: December 5, 2008Date of Patent: October 14, 2014Assignee: Moog Inc.Inventor: David Geiger
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Publication number: 20140298785Abstract: Inductive displacement sensor includes a coil and a target which is movable relative to the coil in a direction of movement, wherein an inductance of the coil is dependent on a position of the target relative to the coil, wherein the coil and the target at least partially overlap in the direction of movement.Type: ApplicationFiled: November 2, 2012Publication date: October 9, 2014Inventors: Hilmar Müller, Sören Lehmann, Martin Haverkamp
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Patent number: 8739526Abstract: A compensating tank for a hydraulic motor vehicle brake system, having a housing including a housing upper part and a housing lower part and having a device for monitoring the tank filling level of the compensating tank, including a switching unit, which is welded to the housing and has a plug connector, and including a sensor or switching element which can be switched by a transducer at a switching point S at which the switching unit generates a signal for an electronic control unit. The housing has a depression for holding the switching unit, with the switching unit having a base body composed of plastic, which base body is welded to the housing in the depression, and with the depression being provided such that the base body of the switching unit forms a planar surface with the housing.Type: GrantFiled: December 11, 2007Date of Patent: June 3, 2014Assignee: Continental Teves AG & Co. oHGInventors: Peter Tandler, Stephan Schlicht, Johann Ludwig, Werner Krebs, Hans-Jürgen Neumann
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Publication number: 20140137550Abstract: A master brake cylinder arrangement includes at least one piston arrangement with a piston movably guided in a receiving bore in a master brake cylinder housing. The piston together with the receiving bore, delimits a pressure chamber which is in fluid connection with a hydraulic brake circuit and may be moved along a movement axis between an initial position and an actuation position. A position detecting device detects movement of the piston caused by actuation is provided within the receiving bore. The position detecting device has a sensor element, which is movable as a function of a piston movement, and a position detecting sensor, which is arranged fixed on the master brake cylinder housing. The sensor element is received and guided in the master brake cylinder housing independently of the piston and is capable of interacting with the piston for deflection as a function of the piston movement.Type: ApplicationFiled: November 14, 2013Publication date: May 22, 2014Applicant: LUCAS AUTOMOTIVE GMBHInventors: Hans-Martin Giese, Torsten Petry, David Lopez-Larequi
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Publication number: 20140047829Abstract: A braking system, in particular for a motor vehicle, including a braking force device having a brake booster for boosting a braking force and a brake pressure supply device for providing brake pressure with the aid of a brake medium, a braking device which may be acted on by pressure by the brake medium with the aid of the brake pressure supply device, and at least one sensor which is designed to detect a distance differential of a displacement means for the displacement of a volume of the brake medium of the braking force device. The braking force device is designed to ascertain the volume of brake medium to be displaced on the basis of the detected distance differential.Type: ApplicationFiled: December 20, 2011Publication date: February 20, 2014Inventor: Jochen Mayer
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Publication number: 20140020377Abstract: In a braking-force generator: a master cylinder generates first braking force corresponding to an operational input through a manipulator; a hydraulic-pressure generator connected to the master cylinder through a shutoff valve generates second braking force corresponding to the operational input through the manipulator when the shutoff valve is closed; an abnormality detector repeatedly determines whether or not an operational state of the hydraulic-pressure generator is abnormal; and a controller prohibits generation of the second braking force, opens the shutoff valve, and transmits the first braking force to the hydraulic-pressure generator, when the operational state is abnormal.Type: ApplicationFiled: July 16, 2013Publication date: January 23, 2014Inventor: Yuki ITO
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Patent number: 8615995Abstract: A fluid reservoir for a motor vehicle hydraulic brake system, having a housing with at least one fluid chamber, the housing preferably having a housing upper part and a housing lower part, a reservoir warning device for monitoring the reservoir filling level of the fluid reservoir, a filler neck for filling the fluid reservoir, a cap for fluid-tight closure of the filler neck, provisions for pressure balancing of the fluid reservoir and preferably a canister-shaped filling filter arranged in the area of the filler neck and having a wall and a base. In order to provide a cost-effective and easily assembled fluid reservoir, the filling filter, which reliably prevents the ingress of dirt, extends into the fluid chamber and includes a wall molded onto the housing of the fluid reservoir that adjoins the reservoir filler neck.Type: GrantFiled: August 7, 2008Date of Patent: December 31, 2013Assignee: Continental Teves AG & Co. oHGInventors: Hans-Jürgen Neumann, Peter Tandler, Stephan Schlicht
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Publication number: 20130247557Abstract: A device for monitoring the position and movement of a brake pedal for motor vehicles, including a power assist brake actuating unit. The brake actuating unit having a master cylinder fastened to the brake power assist unit, a housing and at least one piston displaceable in a linear manner in the master cylinder, and a position indicator for monitoring the position of the brake pedal. The position indicator transmits signals to a sensor element connected to an electronic control unit. The position indicator is provided on a support coupled to the movement of the control valve housing or to the movable wall that is supported by the control valve housing. The support is guided in a housing of a sensor element, and the housing of the sensor element penetrates in a vacuum-tight manner the power assist unit housing and the housing of the master cylinder having a first housing section.Type: ApplicationFiled: July 27, 2011Publication date: September 26, 2013Applicant: CONTINENTAL TEVES AG & CO. OHGInventors: Harald König, Manfred Rüffer
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Publication number: 20130239566Abstract: An integrated electronic hydraulic brake system provided with an actuator including a master cylinder and a pedal simulator, an electronic stability control (ESC) and a hydraulic power unit (HPU) in a single unit.Type: ApplicationFiled: March 12, 2013Publication date: September 19, 2013Inventors: Hyun Jun KIM, I Jin Yang, Seong Ho Choi
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Patent number: 8516671Abstract: A hydraulic seal installation tool having an elongate body portion fixedly attached to a holding portion. The elongate body portion has a hydraulic cylinder actuation means, and a driver mechanism head portion is coupled to the elongate body portion; and an installation method for mounting a seal, involving the steps of presenting a hydraulic seal installation tool to a seal bore, where the tool has a lip seal inserted upon a driver ring of the tool. Inserting the tool into the seal bore, depressing an activation button on a handle of the tool thereby actuating a hydraulic cylinder actuation means.Type: GrantFiled: August 20, 2009Date of Patent: August 27, 2013Assignee: Caterpillar Inc.Inventor: Kurt J. Scheidenhelm
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Publication number: 20130213034Abstract: The invention relates to an actuating device, in particular for a vehicle braking system, having an actuating mechanism, a power-operated actuator, a first travel sensor for sensing the travel of the actuating mechanism, and having an evaluation unit, an additional travel sensor, which can be actuated separately from the first travel sensor, wherein the travel sensors are actuated by way of two elements which can be moved relative to each other and wherein the differential travels and/or differential forces of the travel sensors are measured and evaluated by the evaluation unit. According to the invention an actuating element (103a) is provided which is movably connected to one of the elements which can be moved relative to each other and is movably arranged with respect to the other movable element.Type: ApplicationFiled: October 14, 2011Publication date: August 22, 2013Applicant: IPGATE AGInventor: Heinz Leiber
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Patent number: 8490391Abstract: The invention relates to a hydrostatic actuator, having a master cylinder including a housing and a piston, which is axially mountable in the housing and which pressurizes a pressure chamber filled with pressure medium, a planetary rolling-contact gear system that converts a rotary drive into an axial motion and that has a sleeve, a gear-driven spindle, and planetary rolling elements that roll therebetween, and an electric motor that drives the planetary rolling-contact gear system and that has a stator rigidly connected to a housing and a rotor that can be rotated relative to the stator. In order to optimize the installation space, the pressure chamber is annular and the planetary rolling-contact gear system is arranged radially within the pressure chamber.Type: GrantFiled: April 27, 2012Date of Patent: July 23, 2013Assignee: Schaeffler Technologies AG & Co. KGInventors: Viktor Franz, Matthias Ehrlich, Norbert Esly
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Patent number: 8380412Abstract: A control device (10) for a brake-power-assisted brake system of a vehicle having a first input device (26) for a supplied first information item (28) relating to a supplied assistance force (Fu) of a brake booster (14) of the brake-power-assisted brake system, a second input device (30) for a supplied second information item (32) relating to a total force (Fg) comprising the assistance force (Fu) and a driver braking force (FI) supplied by activation of an activation element (12) of the brake-power-assisted brake system, an evaluation device (36) which is configured to define a third information item relating to a proportional relationship between the total force (Fg) and the assistance force (Fu) taking into account the first information item (28) and the second information item (32), and an output device (44, 50) which is configured to supply at least one control signal (46, 52) to at least one component (14, 54) of the brake-power-assisted brake system taking into account the defined third information iteType: GrantFiled: February 9, 2010Date of Patent: February 19, 2013Assignee: Robert Bosch GmbHInventors: Herbert Vollert, Remy Garnier, Reinhard Weiberle, Timo Jahnz, Volker Mehl, Frank Kneip, Dirk Mahnkopf, Jens Kolarsky, Stephan Hoenle
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Patent number: 8197012Abstract: A device for supplying a downstream hydraulic brake fluid to a hydraulic brake circuit of a motor vehicle equipped with a clutch includes an enclosure intended to contain the hydraulic fluid, the enclosure being provided with at least one outlet nozzle and with an inlet orifice. The enclosure forms a downstream portion of a reservoir, the reservoir comprising an upstream portion forming an upstream enclosure intended to collect an upstream hydraulic fluid from the clutch of the vehicle. The upstream enclosure 4 includes at least one inlet nozzle serving to transfer the upstream hydraulic fluid toward the upstream enclosure 4. The inlet orifice is an intermediate orifice whereby the upstream enclosure opens into the downstream enclosure, the intermediate orifice being equipped with a means for filtering the upstream hydraulic fluid.Type: GrantFiled: May 21, 2008Date of Patent: June 12, 2012Assignee: Robert Bosch GmbHInventors: Jean-Michel L'Aot, Sylvain Lenczner, Christophe Duchossoy, Olivier Beaures-D'Augeres
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Publication number: 20110259004Abstract: Disclosed is a brake actuator unit capable of improving the pedal feeling. The brake actuator unit includes a housing, a master cylinder connected to one end of the housing and provided therein with first and second pistons arranged in parallel to each other, an operating fluid reservoir coupled to an upper portion of the master cylinder to store operating fluid, a simulator accommodated in the master cylinder to provide repulsive force of a pedal, an input shaft moving back and forth according to an operation of the pedal, a control plunger slidably moving back and forth together with the input shaft, first and second output shafts positioned corresponding to first and second pistons to move back and forth together with the control plunger, and a pedal displacement sensor connected to the input shaft.Type: ApplicationFiled: April 22, 2011Publication date: October 27, 2011Inventors: Seung Hyup BAE, Hong Ki Kim, Chang Bok Ko
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Publication number: 20100205957Abstract: A fluid reservoir for a motor vehicle hydraulic brake system, having a housing with at least one fluid chamber, the housing preferably having a housing upper part and a housing lower part, a reservoir warning device for monitoring the reservoir filling level of the fluid reservoir, a filler neck for filling the fluid reservoir, a cap for fluid-tight closure of the filler neck, provisions for pressure balancing of the fluid reservoir and preferably a canister-shaped filling filter arranged in the area of the filler neck and having a wall and a base. In order to provide a cost-effective and easily assembled fluid reservoir, the filling filter, which reliably prevents the ingress of dirt, extends into the fluid chamber and includes a wall molded onto the housing of the fluid reservoir that adjoins the reservoir filler neck.Type: ApplicationFiled: August 7, 2008Publication date: August 19, 2010Applicant: Continental Teves AG & Co. oHGInventors: Peter Tandler, Stephan Schlicht, Hans-Juergen Neumann
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Patent number: 7698893Abstract: For many applications pressure-medium cylinders have to achieve high adjusting forces which often impairs the dynamics of such cylinders due to the large piston cross sections and cylinder volumes, and/or pressure medium has to be supplied at very high pressure. The present invention shows a pressure-medium cylinder which has short reaction times, high adjusting forces and small overall sizes, which is achieved in that two cylinders 5, 8 are arranged in the pressure-medium cylinder 1, which cylinders can be activated independently of one another.Type: GrantFiled: June 16, 2005Date of Patent: April 20, 2010Assignee: VOEST-ALPINE Industrieanlagenbau GmbH & Co.Inventor: Rudolf Langeder
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Publication number: 20100071361Abstract: A compensating tank for a hydraulic motor vehicle brake system, having a housing including a housing upper part and a housing lower part and having a device for monitoring the tank filling level of the compensating tank, including a switching unit, which is welded to the housing and has a plug connector, and including a sensor or switching element which can be switched by a transducer at a switching point S at which the switching unit generates a signal for an electronic control unit. The housing has a depression for holding the switching unit, with the switching unit having a base body composed of plastic, which base body is welded to the housing in the depression, and with the depression being provided such that the base body of the switching unit forms a planar surface with the housing.Type: ApplicationFiled: December 11, 2007Publication date: March 25, 2010Applicant: Continental Teves AG & Co. oHGInventors: Peter Tandler, Stephan Schlicht, Johann Ludwig, Werner Krebs, Hans-Jürgen Neumann
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Patent number: 7644727Abstract: A hydraulic fluid reservoir and hydraulic pump combination has at least one hydraulic fluid port and includes a container with a hollow body having a top and a conduit having a bottom within the container and a top above the bottom. The conduit has an opening adjacent to the bottom of the conduit. The opening is spaced apart below the top of the container. A closure member is releasably, sealingly connected to the top of the conduit. Hydraulic fluid can be added to the container via the conduit up to the level of the opening of the conduit. Addition of further hydraulic fluid fills the conduit to the top thereof and the conduit overflows if additional hydraulic fluid is added after the top of the conduit is reached by the fluid. Preferably the container has a main interior chamber and a smaller chamber which is adjacent to one of the side walls of the container. The smaller chamber is has a bottom opening near the bottom of the smaller chamber which communicates with the main interior chamber.Type: GrantFiled: June 20, 2007Date of Patent: January 12, 2010Assignee: Teleflex Canada Limited PartnershipInventors: Brian Dudra, Eric B. Fetchko
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Patent number: 7640742Abstract: A device for monitoring the level of a supply reservoir, in particular of a hydraulic motor vehicle brake system, comprising a float that has a magnet for actuating a switch or a sensor. The float has a multipart design comprising a first part and a second float part and the magnet is encased and arranged between the two float parts.Type: GrantFiled: March 18, 2005Date of Patent: January 5, 2010Assignee: Continental Teves AG & Co. oHGInventors: Peter Tandler, Stefan Günther, Thomas Jebousek, Jörg Walter
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Patent number: 7555901Abstract: What is disclosed is a drive mechanism, in particular for blanking and nibbling machines, comprising a hydraulic force transmitting element and a spindle drive for driving the force transmitting element, wherein a pre-tensioning means for pre-tensioning the force transmitting element is provided.Type: GrantFiled: November 10, 2004Date of Patent: July 7, 2009Assignee: Bosch Rexroth AGInventor: Joerg Dantlgraber
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Patent number: 7448211Abstract: A reservoir tank for a vehicle brake system has a tank body including upper and lower shells joined together along mating surfaces. A float and a fluid level sensor are mounted in a fluid level detecting chamber defined in the tank body. The float is fitted on a shaft of the fluid level sensor. A partition plate is fitted in the lower shell to restrict a flow of hydraulic fluid into and out of the fluid level detecting chamber. The partition plate is disposed near the top end of the shaft of the fluid level sensor to restrict the distance by which the float can move vertically. A filter, the fluid level sensor and the partition plate are all set in the lower shell. The filter and the partition plate having their top ends pressed against the bottom ends of partitioning walls of the upper shell. Thus, the filter and the partition wall are held in position in the tank body between the upper and lower shells.Type: GrantFiled: June 28, 2005Date of Patent: November 11, 2008Assignee: Advics Co., Ltd.Inventor: Mitsuharu Hayashi
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Publication number: 20080202115Abstract: A mechanical-hydraulic machine and an integrated hybrid drive with a regenerative force assist for eliminating pumps and intensifiers and reducing the energy consumption, operating costs, investment costs, weight and size of machines and improving their performance. The integrated hybrid drive is comprised of common mechanical and hydraulic components. The regenerative hydraulic force assist converts gravitational and deceleration forces of the machine into fluid pressure, stores the fluid pressure and applies the fluid pressure to clamping of dies or molds and/or performing machine operations. A closed loop control system controls the flow of fluid between the hydraulic drive and regenerative force assist.Type: ApplicationFiled: February 27, 2007Publication date: August 28, 2008Inventor: David Geiger
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Patent number: 7318313Abstract: A switch in particular for a master cylinder unit, for opening and/or closing an electrical circuit, for example, for switching on the brake lights, comprises a casing suitable for being housed in a compartment of the cylinder body, a first electrical contact fixed firmly to the casing, a movable element slidable in the casing, a second electrical contact associated with the movable element, and a resilient element for keeping the movable element constantly urged against the piston of the master cylinder unit. The switch forms a switch box which is produced separately and can be associated with the cylinder body in the compartment provided therein.Type: GrantFiled: January 31, 2003Date of Patent: January 15, 2008Assignee: Freni Brembo S.p.A.Inventors: Roberto Lavezzi, Tomasz Grabiec
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Patent number: 7246636Abstract: A hydraulic fluid reservoir and hydraulic pump combination has at least one hydraulic fluid port and includes a container with a hollow body having a top and a conduit having a bottom within the container and a top above the bottom. The conduit has an opening adjacent to the bottom of the conduit. The opening is spaced apart below the top of the container. A closure member is releasably, sealingly connected to the top of the conduit. Hydraulic fluid can be added to the container via the conduit up to the level of the opening of the conduit. Addition of further hydraulic fluid fills the conduit to the top thereof and the conduit overflows if additional hydraulic fluid is added after the top of the conduit is reached by the fluid. Preferably the container has a main interior chamber and a smaller chamber which is adjacent to one of the side walls of the container. The smaller chamber is has a bottom opening near the bottom of the smaller chamber which communicates with the main interior chamber.Type: GrantFiled: August 31, 2005Date of Patent: July 24, 2007Assignee: Teleflex Canada Limited PartnershipInventors: Brian Dudra, Eric B. Fetchko
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Patent number: 7171982Abstract: A hydraulic fluid reservoir and hydraulic pump combination has at least one hydraulic fluid port and includes a container with a hollow body having a top and a conduit having a bottom within the container and a top above the bottom. The conduit has an opening adjacent to the bottom of the conduit. The opening is spaced apart below the top of the container. A closure member is releasably, sealingly connected to the top of the conduit. Hydraulic fluid can be added to the container via the conduit up to the level of the opening of the conduit. Addition of further hydraulic fluid fills the conduit to the top thereof and the conduit overflows if additional hydraulic fluid is added after the top of the conduit is reached by the fluid. Preferably the container has a main interior chamber and a smaller chamber which is adjacent to one of the side walls of the container. The smaller chamber is has a bottom opening near the bottom of the smaller chamber which communicates with the main interior chamber.Type: GrantFiled: September 2, 2005Date of Patent: February 6, 2007Assignee: Teleflex Canada Limited PartnershipInventor: Brian Dudra
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Patent number: 7018002Abstract: The invention proposes a master cylinder 1 with a device for detecting actuation of a braking system. The detection device is fixed to a body 2 of the master cylinder 1 at a pressure chamber 5. The detection device comprises a magnetic circuit 9 able to be opened and closed by a moving magnetic piece 19. The moving magnetic piece 19 is, for example, fixed to a piston 4 of the master cylinder 1. Actuation of a brake pedal causes the piston 4 and the moving piece 19 to advance in the master cylinder 1. The magnetic circuit 9 therefore changes state (opened or closed). The change in state of the magnetic field switches the brake lights on and off.Type: GrantFiled: February 17, 2004Date of Patent: March 28, 2006Assignee: Robert Bosch GmbHInventors: Olivier Masson, Jean Fourcade
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Patent number: 6996984Abstract: A pressure intensifier for generating a relatively large force includes a plurality of pistons driven in advancing and retracting directions. The pressure intensifier includes a body having a cavity used as an internal fluid reservoir. Furthermore, a damping mechanism limits the relative acceleration between pressure intensifier components during operation.Type: GrantFiled: January 6, 2004Date of Patent: February 14, 2006Assignee: BTM CorporationInventors: Edwin G. Sawdon, Steven J. Sprotberry
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Patent number: 6962166Abstract: A hydraulic fluid reservoir and hydraulic pump combination has at least one hydraulic fluid port and includes a container with a hollow body having a top and a conduit having a bottom within the container and a top above the bottom. The conduit has an opening adjacent to the bottom of the conduit. The opening is spaced apart below the top of the container. A closure member is releasably, sealingly connected to the top of the conduit. Hydraulic fluid can be added to the container via the conduit up to the level of the opening of the conduit. Addition of further hydraulic fluid fills the conduit to the top thereof and the conduit overflows if additional hydraulic fluid is added after the top of the conduit is reached by the fluid. Preferably the container has a main interior chamber and a smaller chamber which is adjacent to one of the side walls of the container. The smaller chamber is has a bottom opening near the bottom of the smaller chamber which communicates with the main interior chamber.Type: GrantFiled: February 19, 2002Date of Patent: November 8, 2005Assignee: Teleflex Canada Limited PartnershipInventor: Brian Dudra
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Patent number: 6951104Abstract: A hydraulic piston-and-cylinder arrangement has a piston to which a signal element is assigned and which is accepted movably in a longitudinal direction in a cylinder housing, at which a position sensor is secured, by means of which an axial position of the signal element and therefore of the piston in the cylinder housing can be sensed. The signal element is fitted to the piston by means of a holding cap. As a result, a hydraulic piston-and-cylinder arrangement with a device for sensing the piston position is created, in which the signal element of the sensing device, which signal element operates in conjunction with the position sensor on the cylinder housing, can be fixed in a simple manner on the piston, which also permits a sizing of the signal element largely independent of the piston geometry.Type: GrantFiled: May 30, 2003Date of Patent: October 4, 2005Assignee: FTE Automotive GmbH & Co. KGInventors: Herbert Stobrawe, Christian Sperber
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Patent number: 6886333Abstract: The present invention relates to a position indicator for displaying the position of a piston within a cylinder as part of a piston-and-cylinder assembly in a brake system. The provision of a Hall element for a hydraulic generating cylinder is known in the art, with the Hall sensor mounted on the cylinder and a ring magnet mounted on the piston. An object of the invention is to describe a position indicator for a brake system, which has a simple construction and is able to provide signals relating to the position of the brake pedal relatively rapidly. This object is achieved because a Hall element of a Hall sensor is placed in the cylinder wall of the master cylinder, and because a magnetic zone is arranged in the piston-and-cylinder assembly so that the Hall element responds to the piston movement within the cylinder.Type: GrantFiled: October 24, 2001Date of Patent: May 3, 2005Assignee: Continental Teves AG & Co. oHGInventors: Hans-Jörg Feigel, Ralf Jakobi, Wilfried Wagner, Dieter Merkel, Ingo Knewitz
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Publication number: 20040231326Abstract: A control device for a working machine according to the present invention comprises a capacity variable pump for supplying working oil, a controller for controlling the discharge amount of the pump, a control valve for controlling the working oil discharged from the pump, a hydraulic actuator operated by the working oil from the control valve, an operating lever for operating the hydraulic actuator, and a relief valve to be operated when the pressure of the working oil is a relief pressure or more. The controller has a dynamic emulation model of a hydraulic driving device, and is constituted to estimate the pressure oil flow rate passing through the relief valve from the emulation model according to the operation amount of the operating lever, and to control the pump flow rate of the pump so that the relief flow rate estimation value gets close to zero. According to this, relief loss can be precisely reduced without generating a response delay or pressure loss, and the power can be saved.Type: ApplicationFiled: May 17, 2004Publication date: November 25, 2004Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTDInventors: Etsujiro Imanishi, Naoki Sugano, Takao Nanjo
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Patent number: 6732517Abstract: An assembly for sensing travel by a piston in a master cylinder comprises a magnet and a retainer for retaining the magnet proximate the piston. An orientation screw engages an axial slot in the piston to inhibit rotation of the piston.Type: GrantFiled: March 15, 2002Date of Patent: May 11, 2004Assignee: Delphi Technologies, Inc.Inventors: James W. Zehnder, II, Alan H. Green
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Patent number: 6729450Abstract: A brake booster amplifies driver brake pedal input into an output force and travel for operating a master cylinder. A power unit builds and stores high pressure fluid to provide boost. Inlet and outlet solenoid valves regulate pressurized fluid to the amplifying mechanism. In one embodiment, a single boost chamber provides fluid pressure to operate the master cylinder and to provide a brake pressure indicative opposing force to driver input. One travel sensor monitors the position and movement of an input rod and piston, and a second travel sensor monitors the position and movement of an output piston. An ECU monitors system parameters and controls a motor pump, inlet and outlet valves and peripherals. In another embodiment, the opposing force to the brake pedal input is provided by a separate pressure fluid chamber located within and movable with the output piston. Boost chamber pressure and, optionally, output piston travel are monitored to provide a braking force indication.Type: GrantFiled: December 2, 2002Date of Patent: May 4, 2004Assignee: Robert Bosch CorporationInventors: Timothy J. Albert, William J. Penninger, Richard B McClain
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Publication number: 20040028543Abstract: The invention relates to a hydroelectric pressure intensifier in which the plunger piston (8) and/or the driving spindle (9) of said plunger piston and/or the piston rod (3) of the working piston (2) are driven by electrical means, especially electromotors such as linear motors (11).Type: ApplicationFiled: March 31, 2003Publication date: February 12, 2004Inventor: Eugen Rapp
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Publication number: 20040020201Abstract: The present invention relates to a position indicator for displaying the position of a piston (3) within a cylinder (1) as part of a piston-and-cylinder assembly (1, 3) in a brake system. The provision of a Hall element for a hydraulic generating cylinder is known in the art, with the Hall sensor mounted on the cylinder and a ring magnet mounted on the piston. An object of the invention is to describe a position indicator for a brake system, which has a simple construction and is able to provide signals relating to the position of the brake pedal relatively rapidly. This object is achieved because a Hall element of a Hall sensor (12) is placed in the cylinder wall (1) of the master cylinder, and because a magnetic zone (9) is arranged in the piston-and-cylinder assembly so that the Hall element responds to the piston movement within the cylinder.Type: ApplicationFiled: April 24, 2003Publication date: February 5, 2004Inventors: Hans-J?ouml;rg Feigel, Ralf Jakobi, Wilfried Wagner, Dieter Merkel, Ingo Knewitz
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Publication number: 20030172651Abstract: An assembly for sensing travel by a piston in a master cylinder comprises a magnet and a retainer for retaining the magnet proximate the piston. An orientation screw engages an axial slot in the piston to inhibit rotation of the piston.Type: ApplicationFiled: March 15, 2002Publication date: September 18, 2003Applicant: DELPHI TECHNOLOGIES INC.Inventors: James W. Zehnder, Alan H. Green