Wear Patents (Class 340/454)
  • Patent number: 11623620
    Abstract: For rapid and precise actuation of a friction brake, the thermal expansion of the friction brake is determined using a thermal model of the friction brake and therefrom the temperature-dependent shift in the contact point is determined for the braking operation and the temperature-dependent shift in the contact point is taken into account when determining the actuation measure of the friction brake to be adjusted.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: April 11, 2023
    Assignee: VE VIENNA ENGINEERING FORSCHUNGS UND ENTWICKLUNGS GMBH
    Inventor: Michael Putz
  • Patent number: 11346412
    Abstract: A cover panel (1) for a disc brake (2) for covering an installation opening (5) of the disc brake (2), wherein the disc brake (2) comprises a brake carrier (13) and a brake caliper (3) sliding on the brake carrier (13) axially in the direction of an application side (Z) or axially in the direction of a rim side (F).
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: May 31, 2022
    Assignee: WABCO Europe BVBA
    Inventors: Jannis Hecker, Bernward Redemann, Vitalij Scherer
  • Patent number: 11285948
    Abstract: A machine includes an engine, a brake system, a speed sensor, a grade sensor, a load sensor, and a controller. The controller is configured to: determine a grade force based on the weight of the machine and the grade at which the machine is disposed; determine a deceleration force based on a target deceleration and the weight of the machine; monitor the speed at which the machine is traveling; determine an actual deceleration of the machine based on the monitored speed at which the machine is traveling; determine a deceleration error based on a difference between the actual deceleration and the target deceleration; determine a force correction based on the deceleration error; and control the brake system to apply a total brake force equal to the sum of the grade force, the deceleration force, and the force correction.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: March 29, 2022
    Assignee: Caterpillar Inc.
    Inventors: Timothy D. Schwartz, Russell J. Pugh, David R. Wisley
  • Patent number: 11209812
    Abstract: A method for determining part wear, such as using a wear model, includes receiving, from a sensor, sensor data representing a surface of a wear part. The method further includes determining an estimated time until the part should be replaced. The method further includes batching together multiple wear parts that need replacing to enable a user to replace multiple parts in one maintenance period. The method may also include providing information to the user during replacement of a worn part to indicate the part location.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: December 28, 2021
    Assignee: Caterpillar Paving Products Inc.
    Inventors: Colton J. Hirman, Dustin W. Sondreal, Eric S. Engelmann
  • Patent number: 10935094
    Abstract: The disclosure provides a wear warning device including a caliper, two brake pads, an elastic component and a first switch. The caliper has two push parts. The two push parts are respectively disposed at a first wall surface and a second wall surface of the caliper. The brake pads are located between the two push parts. The elastic component includes two arm parts and a connection part located between the arm parts. The arm parts are respectively disposed on the brake pads. The first switch is located between the arm parts. When the brake pads are in a worn-out state and the push parts are moved toward each other to force the brake pads to clamp a brake disk and to force the two arm parts to move toward each other, one of the arm parts activates the first switch to produce a wear warning signal.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: March 2, 2021
    Assignee: TEKTRO TECHNOLOGY CORPORATION
    Inventors: Szu-Fang Tsai, Yu-Ming Huang, Pao-Wen Lin
  • Patent number: 10865843
    Abstract: A brake pad of a disc brake, in particular for a disc brake for a utility vehicle, has a backing plate, which bears a friction lining and to which an element that can be moved in relation to the backing plate is connected, and an electrical wear sensor designed in such a way that the wear sensor is arranged on the element that can be moved in relation to the backing plate so that the wear sensor itself can be moved in relation to the backing plate.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: December 15, 2020
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventor: Wolfgang Pahle
  • Patent number: 10167916
    Abstract: A brake pad wear sensing system for measuring brake pad wear for a vehicle disc brake system includes an RF communication circuit for transmitting an RF signal including brake pad wear data. The system also includes a vehicle-based receiver including an RF communication circuit for receiving the brake pad wear data in the RF signal transmitted by the wear sensor. The vehicle-based receiver is operatively connected to a vehicle-based main controller. The vehicle-based receiver transmits the brake pad wear data to the main controller.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: January 1, 2019
    Assignee: TRW Automotive U.S. LLC
    Inventors: Xing Ping Lin, Mark Baker
  • Patent number: 9365193
    Abstract: A fixed caliper brake for a motor vehicle, including a housing with two housing limbs and a housing bridge connecting the housing limbs in a flexurally rigid manner at a defined distance from one another, pistons, which are received in bores in the housing limbs and are guided displaceably along an axis A in relation to the brake disk, and brake pads which are provided in pairs, are guided in an axially displaceable manner in the housing and arranged in the circumferential direction while being supported against circumferential forces, each brake pad being actuable directly by at least one piston. The brake pads are supported in a form-fitting manner on the housing bridge at least on the run-in side. At least each arm on the run-in side is configured with a hook shape open on the radially outer side and serves at least partially for form-fitting abutment against the housing.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: June 14, 2016
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Verena Freund, Dieter Kristen, Klaus-Dieter Paschke, Joachim Rehm
  • Patent number: 9045284
    Abstract: A device for transporting hollow bodies, includes: —at least one element for grasping a hollow body, the element including at least one cam follower (30A) made of an electrically conductive material; —at least one fixed cam (32) which is intended to engage with the cam follower (30A), the cam (32) being made of an electrically conductive material; —a contact layer (34) which is made of an electrically insulating material and is interposed between the cam (32) and the cam follower (30A); characterized in that the cam follower (30A) is connected to a first electrical signal (P1) whereas the cam (32) is connected to a second electrical signal (P2), a member (36) being positioned so as to detect electrical contact between the cam follower (30A) and the cam (32).
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: June 2, 2015
    Assignee: SIDEL PARTICIPATIONS
    Inventors: Denis Turlotte, Yvan Maurovic
  • Patent number: 8994523
    Abstract: A brake monitoring system and method for a vehicle having multiple axles and a plurality of brake actuators and an engine control module, each brake actuator being associated with one of the axle. The system include sensors for measuring, in real-time, brake pressure and brake lining wear, and generating first and second signals. The first and second signals are received and stored in a chassis communications module. The chassis communications module detects fault condition of the brakes as a function of the first and/or second signals and for recording the fault condition, the fault condition being one of a brake monitor warning and a brake lining warning and provides an indication of status via warning lights.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: March 31, 2015
    Assignee: Indian Head Industries, Inc.
    Inventors: Thomas Edward Wallace, Richard J. Rink, Mark David Chandler
  • Patent number: 8970359
    Abstract: In a method and a device for wear diagnosis of a motor vehicle, driving events and driving conditions occurring during driving operation are detected, the detected driving events and driving conditions are assigned in each case a wear index value using a table which is stored in a memory of the motor vehicle and which adds up the wear index values assigned to the detected driving events and driving conditions in order to form a total wear index value, and the determined total wear index value is compared with a reference total wear index value derived from a stored characteristic curve.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: March 3, 2015
    Assignee: Continental Automotive GmbH
    Inventors: Reinhard Barth, Thierry Caramigeas, Matthieu Grolleau, Suraj Kiran, Olivier Lobey
  • Patent number: 8860566
    Abstract: A device for monitoring the lining thickness of a brake lining of a friction brake of a vehicle is disclosed, wherein the brake lining interacts with a friction partner, such as a brake disk. The brake lining is equipped with at least one passive transponder of an RFID system, wherein the passive transponder is changed and/or destroyed once the brake lining has reached a defined wear threshold as a result of contact with the friction partner or with an element that is guided by the friction partner, such that the transponder transmits a signal that differs from an expected signal, or no signal, to a reading unit of the RFID system after being illuminated by the reading unit.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: October 14, 2014
    Assignee: Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH
    Inventor: Marc-Gregory Elstorpff
  • Patent number: 8739938
    Abstract: A brake component for retarding a rotor includes a wearable friction segment having a thickness, wherein the friction segment is configured to be pressed into contact with the rotor. The brake component also includes a first resistive sensor having an electric resistance and a feature determinative of the electric resistance. The first resistive sensor is mounted on the friction segment and includes an electric connection for communication with an external device. The feature is configured to wear along with the friction segment thereby increasing the electric resistance of the first resistive sensor. A braking system employing the friction brake component to retard rotation of a wheel and for decelerating a motor vehicle is also disclosed.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: June 3, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Brian T. King, Jerome A. Schneider, Timothy J. Guse
  • Patent number: 8717159
    Abstract: A vehicle brake monitoring system comprises a sensor assembly configured to detect, during vehicle braking, relative position of a longitudinal member contacting a brake pad carrier, and processing structure communicating with the sensor assembly. The processing structure processes output of the sensor assembly to determine brake status.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: May 6, 2014
    Inventors: Jamie Bishop Todd, Sam Jamison Todd, Jerid Allan Leclair
  • Publication number: 20140091918
    Abstract: The invention relates to a wear detection system (10) and to a method for detecting wear, in particular for friction elements, such as brushes, friction linings, brake linings, lubrication pieces or the like, comprising at least one consumable friction element and a transponder unit (11), wherein the transponder unit can communicate wirelessly with a transmitter-receiver unit (12), the wear detection system comprising a shielding device, the shielding device being configured in such a manner that the transponder unit can be at least partially shielded by means of the shielding device as a function of a wear condition of the friction element, such that communication between the transponder unit and the transmitter-receiver unit can be influenced.
    Type: Application
    Filed: February 10, 2012
    Publication date: April 3, 2014
    Inventors: Daniel Pfeffer, Jürgen Spies, Stefan Nettesheim, Sven Jakubith, Guntram Fleischhauer, Timo Staubach
  • Patent number: 8564449
    Abstract: A component including a surface subject to wear by an electrically conductive wear counterface (50). The component comprises a substrate (10); one or more material layers (32) overlying the substrate (10); a wear surface layer (16) overlying the one or more material layers (32); a first pair of spaced apart and electrically open wear sensor conductors (12/14) disposed in the substrate (10), in the one or more material layers (32), or in the wear surface layer (16); a first wear warning electrical circuit (68/69/70/74) for communicating with the first pair of conductors (12/14) for providing a first wear warning; and wherein when the wear counterface (50) has worn overlying layers, the wear counterface (50) interconnects the first pair of conductors (12/14) to activate the first wear warning circuit (68/69/70/74).
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: October 22, 2013
    Assignee: Siemens Energy, Inc.
    Inventors: David J. Mitchell, Anand A. Kulkarni
  • Patent number: 8405497
    Abstract: An alarm device for a clutch that issues an alarm indicating a lifetime expiration of the clutch that selectively connects and disconnects an input shaft to and from an output shaft, includes: a slip heat release threshold setting unit 104 that establishes a threshold criteria as to a clutch damage or the clutch lifetime, in a form of a relation between a heat release generated in a clutch slip operation and a frequency of the heat release occurrences; and a slip heat release calculator 105 that calculates the heat release during the clutch operation, based on a hydraulic oil pressure in an actual clutch operation and a relative circumferential speed between input and output shafts, the alarm device 11 issues the alarm based on the calculation result through the slip heat release calculating means 105 and the slip heat release threshold setting means 104.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: March 26, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Kazunari Okabe, Akihiko Fujimoto, Takeshi Harasawa
  • Patent number: 8400328
    Abstract: A device and method for providing a warning to an operator of a truck/tractor and trailer unit of a potential loss or reduction of brakes. The invention provides a pressure differential sensor (12) which bridges between an air supply line (13, 16) to the spring brakes (17) of a truck/tractor and an air supply line (14) to the trailer. An audible and/or visual warning device (31, 33) coupled to the sensor (12) is activated upon a differential between the pressures in the respective supply lines (13, 16 and 14) being sensed.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: March 19, 2013
    Inventor: Martin John Wright
  • Patent number: 8368547
    Abstract: Systems and methods for indicating the unsafe service handling temperature of an information handling system component are disclosed. A method may include sensing a surface temperature of the component and comparing the surface temperature to a first and second threshold temperatures. The method may further include displaying various temperature warning by multiple temperature indicators if the surface temperature is above or below the threshold temperatures.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: February 5, 2013
    Assignee: Dell Products L.P.
    Inventors: Stuart Allen Berke, Shawn P. Hoss
  • Patent number: 8319623
    Abstract: A brake monitoring system and method for a vehicle having multiple axles and a plurality of brake actuators and an engine control module, each brake actuator being associated with one of the axle. The system include sensors for measuring, in real-time, brake pressure and brake lining wear, and generating first and second signals. The first and second signals are received and stored in a chassis communications module. The chassis communications module detects fault condition of the brakes as a function of the first and/or second signals and for recording the fault condition, the fault condition being one of a brake monitor warning and a brake lining warning and provides an indication of status via warning lights.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: November 27, 2012
    Assignee: MGM Brakes
    Inventors: Thomas Edward Wallace, Richard J. Rink, Mark David Chandler
  • Patent number: 8310356
    Abstract: Devices and methods for sensing wear of a component are described. A wear-sensing device has a wear component and a wireless sensor disposed within the wear component. The sensor generates a signal, detectable by a detector, for confirming the presence of the sensor. Further, the claimed invention includes a positioner for precisely positioning the sensor within the wear component. Also, an authentication module is present for authenticating the sensor.
    Type: Grant
    Filed: December 5, 2009
    Date of Patent: November 13, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Charles K. Evans, Paul Castrilli
  • Patent number: 8290695
    Abstract: Probe data is analyzed to derive Longitudinal Speed Profiles (LSPs) and an Optimal Longitudinal Speed Profile (18) for each road segment or link in a digital map network. The Longitudinal Speed Profiles (LSPs) profiles are calculated during defined time spans whereas the Optimal Longitudinal Speed Profile (18) is based on the LSP for the time span corresponding only to free flow traffic conditions. All of the LSPs can used to create a respective energy cost for each time span, or only the OLSP (18) can be used (or alternatively the RRDSL 16 or LRRDSL 17) to calculate an energy cost for the free flow conditions only. The energy cost can be used to predict the energy required by a vehicle to traverse the link. Navigation software can use the energy cost to plan the most energy efficient route between two locations in the digital map. Sensory signals can be activated if a driver strays from the Optimal Longitudinal Speed Profile (18) to achieve extremely high levels of energy efficiency.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: October 16, 2012
    Inventors: Volker Hiestermann, Robert Joannes Van Essen, Edwin Bastiaensen, Stephen T'Siobbel
  • Publication number: 20120212335
    Abstract: A brake lining monitoring system comprising primarily for automobiles. The monitoring system comprises a sensor for continuously measuring the thickness of a brake lining disposed at each wheel of an automobile, a memory including a plurality of predefined successive thickness value ranges wherein, each thickness value range is associated with a brake lining status message, and a display monitor for displaying the measured thickness value along with the status message associated with the thickness value range to which the measured thickness value corresponds.
    Type: Application
    Filed: February 21, 2011
    Publication date: August 23, 2012
    Inventors: Mehrzad Bahrami Ziarani, Mehran Bahrami Ziarani
  • Patent number: 8232893
    Abstract: It is an object of the present invention to provide a parking assisting apparatus which can selectively determine an appropriate target parking position, which can be used for parking assisting, with an appropriate priority, by appropriately using obstacle detecting means and parking space detecting means in a coordinated fashion. The present invention is a parking assisting apparatus for assisting parking a vehicle, comprising the obstacle detecting means for detecting an obstacle near the vehicle; and parking section line detecting means for detecting a parking section line painted on the ground; wherein if the parking section line is detected by the parking section line detecting means, the apparatus calculates the target parking position based on the detected parking section line.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: July 31, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomohiko Endo, Yasushi Makino, Yuichi Kubota, Yukiko Kawabata
  • Patent number: 8144031
    Abstract: A parking assisting device includes an ambient area detecting unit that detects an obstacle or a parking frame in an ambient area surrounding a vehicle, and a guiding unit guides the vehicle to a parking initial position from which parking of the vehicle to a parking space, adjacent to the detected obstacle, or the detected parking frame is permissible. In the parking assisting device, a guidance mode in which the guiding unit guides the vehicle to the parking initial position is set up based on a distance between the vehicle and the detected obstacle or the detected parking frame in a vehicle width direction of the vehicle.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: March 27, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukiko Kawabata, Yasushi Makino, Hideyuki Iwakiri, Yuichi Kubota, Tomohiko Endo, Miyuki Omori, Takuya Ito, Atsuko Nakanishi
  • Patent number: 8144003
    Abstract: A brake or clutch lining (10; 12) has a friction lining (22) arranged on a carrier plate (20). For purposes of detecting a critical operating temperature, an electrically conductive material (24) that has a phase-transition temperature that falls within the range of the critical operating temperature of the friction lining to be detected is provided in at least one place in the friction lining (22).
    Type: Grant
    Filed: August 18, 2007
    Date of Patent: March 27, 2012
    Assignee: TMD Friction Services GmbH
    Inventors: Thomas Degenstein, Erik Berger, Andreas Elvenkemper
  • Patent number: 8130120
    Abstract: A parking assistance device includes a guiding unit to perform guidance of a vehicle to a parking initial position from which the vehicle can be parked into a parking space located adjacent to and on a far side of an object existing around the vehicle with respect to a running direction of the vehicle; an obstacle detecting unit to detect an obstacle around the vehicle in response to a reflected wave of a wave emitted from the vehicle in a predetermined direction; and a timing setting unit configured to set a timing to start the guidance in response to a detection result of the obstacle detecting unit, which is related to an obstacle existing in a predetermined distance from the object in the parking space.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: March 6, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukiko Kawabata, Yasushi Makino, Hideyuki Iwakiri, Yuichi Kubota, Tomohiko Endo, Miyuki Omori, Takuya Ito, Atsuko Nakanishi
  • Patent number: 8078353
    Abstract: A self monitoring vehicle braking system includes multiple sensors that gather data associated with the braking system. The data includes wheel speed, road inclination, moisture associated with a surface of the braking system, and audio associated with the road. A processor receives the data from the sensors and processes the data to determine whether a condition of the braking system falls within defined limits and provides to the driver of the vehicle an indication of the braking system condition.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: December 13, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Kai Yun Yow, Poh Leng Eu
  • Patent number: 8078334
    Abstract: An unobtrusive system for monitoring the physiological condition of a target user of a vehicle including a wearable device affixed to the target user. A measurement subsystem is releasably coupled to the wearable device configured to measure a concentration of at least one analyte in the blood of the target user at one or more time increments. A proximity sensor is configured to detect the location of the wearable device. A vehicle control subsystem is responsive to the proximity sensor and the measurement subsystem and is configured to determine if the wearable device is proximate a predetermined location in the vehicle and configured to determine if the measured concentration of the at least one analyte exceeds a predetermined threshold concentration level, and based on such a determination, initiate one or more predetermined actions.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: December 13, 2011
    Inventor: Alan Goodrich
  • Publication number: 20110254679
    Abstract: A vehicle brake monitoring system comprises a sensor assembly configured to detect, during vehicle braking, relative position of a longitudinal member contacting a brake pad carrier, and processing structure communicating with the sensor assembly. The processing structure processes output of the sensor assembly to determine brake status.
    Type: Application
    Filed: March 15, 2011
    Publication date: October 20, 2011
    Inventors: Jamie Bishop Todd, Sam Jamison Todd, Jerid Allan Leclair
  • Publication number: 20110133923
    Abstract: Devices and methods for sensing wear of a component are described. A wear-sensing device has a wear component and a wireless sensor disposed within the wear component. The sensor generates a signal, detectable by a detector, for confirming the presence of the sensor. Further, the claimed invention includes a positioner for precisely positioning the sensor within the wear component. Also, an authentication module is present for authenticating the sensor.
    Type: Application
    Filed: December 5, 2009
    Publication date: June 9, 2011
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: CHARLES K. EVANS, PAUL CASTRILLI
  • Patent number: 7950500
    Abstract: A disc brake, in particular, for a commercial vehicle, has a brake caliper which engages over a brake disc, brake linings which make contact with the brake disc in a functional position, and a brake application device with which one of the brake linings can be pressed, via at least one adjusting spindle, against the brake disc. An adjustment device is rotationally fixed to the adjusting spindle, by which wear-induced change in the running clearance between the brake lining and the brake disc can essentially be compensated. A closure lid covers the adjustment device and is attached to the brake caliper. A lining wear sensor communicates with a step-down gear mechanism connected to the adjusting spindle. The lining wear sensor is embodied as a contactless sensor which rotates on a concentric path has its change in angular position detected by the lining wear sensor and transmitted to an evaluation device.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: May 31, 2011
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventor: Anton Helf
  • Patent number: 7877216
    Abstract: A brake, system, and method are presented. The brake includes friction material, a backing pad, sensor-wear material embedded within the friction material, and an electronics assembly. The electronics assembly is configured to measure a characteristic of the sensor-wear material, such as the electrical resistance or the temperature of the sensor-wear material. The sensor-wear material may be applied to the brake using a variety of approaches. A condition of the brake, such as a brake-wear value or an estimated-mileage value is determined, based on the measured characteristic of the sensor-wear material. A brake-wear state may be determined by comparing the brake-wear value to one or more thresholds. The brake-wear value, estimated-mileage value, and/or the brake wear state may be indicated on a brake-wear indicator.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: January 25, 2011
    Assignee: Honeywell International Inc.
    Inventors: Mark A Wright, George L Wright
  • Publication number: 20110012724
    Abstract: A device for monitoring the lining thickness of a brake lining of a friction brake of a vehicle is disclosed, wherein the brake lining interacts with a friction partner, such as a brake disk. The brake lining is equipped with at least one passive transponder of an RFID system, wherein the passive transponder is changed and/or destroyed once the brake lining has reached a defined wear threshold as a result of contact with the friction partner or with an element that is guided by the friction partner, such that the transponder transmits a signal that differs from an expected signal, or no signal, to a reading unit of the RFID system after being illuminated by the reading unit.
    Type: Application
    Filed: February 20, 2009
    Publication date: January 20, 2011
    Inventor: Marc-Gregory Elstorpff
  • Publication number: 20100315221
    Abstract: An apparatus is provided for measuring wear-induced displacement of a brake lining with respect to an associated brake caliper, comprising a gear mechanism for converting the wear-induced displacement into a rotary movement, having a sensor for detecting the rotary movement, wherein a contact-free coupling is provided for transmitting the rotary movement to the sensor. The apparatus is designed in such a way that the sensor generates an analogue or pulse-width-modulated detection signal for determining the wear-induced displacement of the brake lining, wherein the detection signal corresponds to the respective displacement caused by the rotary movement. The invention also related to a corresponding method for measuring the wear-induced displacement of a brake lining with respect to an associated brake caliper.
    Type: Application
    Filed: August 4, 2010
    Publication date: December 16, 2010
    Applicant: PREH GMBH
    Inventors: Hans-Michael Schmitt, Martin Blaufuss, Bernhard Knuettel
  • Patent number: 7847679
    Abstract: A material wear indication system is provided that includes a friction plate capable of engaging a moving surface and a wear indicator. The friction plate includes a wearable portion and a non-wearable portion. In one embodiment the wear indicator is embedded in the non-wearable portion and is prevented from contacting the moving surface until the wearable surface has been sufficiently eroded. When the wear indicator contacts the moving surface it emits a particulate matter that can be detected by a sensor. The sensor is operable to generate an electrical signal that is transmitted to a control unit when the wearable surface has eroded thereby exposing the wear indicator to the moving surface.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: December 7, 2010
    Assignee: Rolls-Royce Corporation
    Inventors: Andrew D. Copeland, Joel Rubel, Molly Harrison
  • Publication number: 20100300816
    Abstract: A method and device are provided for indicating wear of at least one brake pad in a disc brake having an electric motor actuator. The method adds up wear adjustment travel paths of the electric motor actuator and/or of an adjustment motor, and indicates the sum of the wear adjustment paths so obtained as the wear of the brake pad or as a residual brake pad service life.
    Type: Application
    Filed: January 18, 2007
    Publication date: December 2, 2010
    Applicant: Knorr-Bremse Systeme Fuer Nutzfahrzeuge GmbH
    Inventors: Tobias Linke, Markus Stoehr
  • Publication number: 20100283595
    Abstract: In a braking system for a vehicle, having at least one brake pad, with which at least one wear indicator is possibly associated, at least one temperature sensor (6) should be associated with the braking system and/or the wear indicator.
    Type: Application
    Filed: December 13, 2007
    Publication date: November 11, 2010
    Applicant: PEX KABELTECHNIK GMBH
    Inventors: Jorg Korecki, Marco Schock, Sebastian Kappel
  • Publication number: 20100253497
    Abstract: A brake shoe for a brake system has a backplate with a friction lining attached thereto and provisions which are mounted in the region of the friction lining that have the purpose of sensing the wear. In order to sense the state of wear of the friction lining and/or in order to identify the brake shoe, a passive transponder is provided which communicates using a wireless transmission technology, preferably using RFID (radio frequency identification) technology.
    Type: Application
    Filed: September 23, 2008
    Publication date: October 7, 2010
    Applicant: CONTINENTAL TEVES AG & CO. OHG
    Inventors: Sven Bakker, Manfred Reuter, Henning Thienemann
  • Patent number: 7808374
    Abstract: An apparatus is provided for measuring wear-induced displacement of a brake lining with respect to an associated brake caliper, comprising a gear mechanism for converting the wear-induced displacement into a rotary movement, having a sensor for detecting the rotary movement, wherein a contact-free coupling is provided for transmitting the rotary movement to the sensor. The apparatus is designed in such a way that the sensor generates an analogue or pulse-width-modulated detection signal for determining the wear-induced displacement of the brake lining, wherein the detection signal corresponds to the respective displacement caused by the rotary movement. The invention also related to a corresponding method for measuring the wear-induced displacement of a brake lining with respect to an associated brake caliper.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: October 5, 2010
    Assignee: PREH GmbH
    Inventors: Hans-Michael Schmitt, Martin Blaufuss, Bernhard Knuettel
  • Patent number: 7768381
    Abstract: A collision detection apparatus for a vehicle having a vehicle bumper, which includes a bumper reinforcement includes a chamber member, a pressure sensor, and a collision detecting device. The chamber member is provided inside the vehicle bumper at a front surface of the bumper reinforcement. The pressure sensor is configured to sense change of pressure in the chamber space. The chamber member includes a deformable part and a non-deformable part, each of which extends in a vehicle width direction. The deformable part is compressed to be deformed between the collision object and the bumper reinforcement in a case, where the collision object collides with the vehicle bumper. The non-deformable part is limited from being compressed to be deformed.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: August 3, 2010
    Assignee: Denso Corporation
    Inventors: Tetsuya Takafuji, Shuji Nakamura
  • Publication number: 20100188203
    Abstract: A brake monitoring system and method for a vehicle having multiple axles and a plurality of brake actuators and an engine control module, each brake actuator being associated with one of the axle. The system include sensors for measuring, in real-time, brake pressure and brake lining wear, and generating first and second signals. The first and second signals are received and stored in a chassis communications module. The chassis communications module detects fault condition of the brakes as a function of the first and/or second signals and for recording the fault condition, the fault condition being one of a brake monitor warning and a brake lining warning and provides an indication of status via warning lights.
    Type: Application
    Filed: January 21, 2010
    Publication date: July 29, 2010
    Applicant: MGM BRAKES
    Inventors: Thomas Edward Wallace, Richard J. Rink, Mark David Chandler
  • Publication number: 20100156619
    Abstract: A device and method for providing a warning to an operator of a truck/tractor and trailer unit of a potential loss or reduction of brakes. The invention provides a pressure differential sensor (12) which bridges between an air supply line (13, 16) to the spring brakes (17) of a truck/tractor and an air supply line (14) to the trailer. An audible and/or visual warning device (31, 33) coupled to the sensor (12) is activated upon a differential between the pressures in the respective supply lines (13, 16 and 14) being sensed.
    Type: Application
    Filed: March 24, 2006
    Publication date: June 24, 2010
    Inventor: Martin John Wright
  • Publication number: 20100013620
    Abstract: A brake or clutch lining (10; 12) has a friction lining (22) arranged on a carrier plate (20). For purposes of detecting a critical operating temperature, an electrically conductive material (24) that has a phase-transition temperature that falls within the range of the critical operating temperature of the friction lining to be detected is provided in at least one place in the friction lining (22).
    Type: Application
    Filed: August 18, 2007
    Publication date: January 21, 2010
    Applicant: TMD Friction Services GmbH
    Inventors: Thomas Degenstein, Andreas Elvenkemper, Erik Berger
  • Patent number: 7636036
    Abstract: A device for the detection of an unauthorised liquid or solid substance in a zone with protected access. The device includes a support base designed to receive a single foot, wearing a shoe of an individual to be checked, an electromagnetic field emitter/receptor operating at least at several frequencies in a specified range of frequencies, a position marker, on the support base, designed to impose a precise positioning of the foot wearing the shoe in relation to the emitter/receptor. The complex impedance is measured of the emitter/receptor influenced by a load which consists of the shoe and its contents, representing the complex dielectric characteristics of the shoe and of its contents. A mechanism is provided for supplying information associated with the measured complex impedance and therefore with the nature of the contents of the said shoe of the individual to be checked.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: December 22, 2009
    Inventor: Alessandro Manneschi
  • Patent number: 7554435
    Abstract: A vehicle on-board unit of a host vehicle is configured to communicate with other vehicle to alert the driver of a potential braking situation in a preceding vehicle. The vehicle on-board unit has an incoming message receiving section, an incoming message relevancy section and a driver warning section. The incoming message receiving section receives a preceding vehicle message containing throttle release data of a preceding vehicle located in front of the host vehicle. The incoming message relevancy section performs a relevancy determination of the throttle release data received. The driver warning section selectively alerts a driver of the host vehicle of a potential braking situation of the preceding vehicle based upon the relevancy determination.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: June 30, 2009
    Assignee: Nissan Technical Center North America, Inc.
    Inventors: Steve Tengler, Jack Auflick
  • Publication number: 20080296105
    Abstract: A tension control assembly including a rotating member, a braking member, at least one brake pad, a means for driving the at least one brake pad against the braking member, and a temperature sensing means. The braking member is attached to the rotating member. The at least one brake pad is positioned adjacent to the braking member. The means for driving the at least one brake pad against the braking member forces frictional contact between the at least one brake pad and the braking member, thus providing torque to the rotating member. The temperature sensing means measures the temperature of the at least one brake pad.
    Type: Application
    Filed: May 30, 2007
    Publication date: December 4, 2008
    Inventors: Michael A. Jost, Chad I. Schmidt, Ram V. Dwivedula, Michael S. Hemphill, Tim Allen Heitman, Md M. Haque
  • Publication number: 20080224842
    Abstract: When a user initiates a braking operation, an accelerator position is checked to see if the accelerator opening is about zero, a deceleration threshold value is computed based upon a brake pedal effort, the deceleration of the vehicle is obtained based upon the pedal effort, and an actual deceleration value is obtained by detecting a speed of the vehicle over time. If it is confirmed that an accelerator opening is zero, a comparison is made between the pedal-effort based deceleration threshold value and the actual deceleration are compared to determine if the brake has worn sufficiently to warrant maintenance.
    Type: Application
    Filed: March 13, 2008
    Publication date: September 18, 2008
    Applicant: YAMAHA MOTOR ELECTRONICS KABUSHIKI KAISHA
    Inventor: Yukiyasu Takano
  • Patent number: 7408474
    Abstract: A damage indicator for indicating potential damage to a sensor.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: August 5, 2008
    Assignee: Leitner-Poma of America, Inc.
    Inventors: Jeremiah Daniel Frazier, Brian Christopher Kelly
  • Patent number: 7391309
    Abstract: A monitoring system for driver's braking habits comprising a sensor connected to brakes of a vehicle provided to sense and evaluate the following levels of pressure being applied to the brakes by a driver: normal pressure, above normal pressure and an excessive pressure level. The sensor is adapted to activate a warning signal element connected to the sensor and is provided to warn the driver when the pressure level exceeds the above normal pressure level and the excessive pressure level which facilitates correction of bad driving habits of the driver and development of preventive driving techniques. The sensor comprises a first sensor adapted to sense and evaluate the above normal pressure level, and a second sensor adapted to sense and evaluate the excessive pressure level.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: June 24, 2008
    Assignee: Securite GMR Safety
    Inventors: Albert Chartier, Gaetan Jette