By Measuring Vibrations (e.g., Resonant Frequency) Patents (Class 73/862.41)
  • Patent number: 10267696
    Abstract: A more accurate tension of a belt or a more accurate target natural frequency of the belt when the belt tension is adjusted is determined. A method for calculating a belt tension includes receiving a natural frequency of a belt and a span; performing calculation for determining a tension of the belt using a predetermined expression, based on the natural frequency, the span, and a unit mass of the belt read from a memory; and displaying the tension on a display, wherein in a case where the span is within a predetermined range corresponding to the belt, the predetermined expression is corrected so that an error caused by a bending stiffness of the belt is reduced.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: April 23, 2019
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Hirofumi Miyata, Yoshikazu Wakizaka, Yasushi Chida
  • Patent number: 9778098
    Abstract: A natural-frequency measurement device for measuring the natural frequency of a belt includes: an acceleration sensor attached to a portion of the belt between an adjacent pair of pulleys to sense acceleration resulting from the vibration of the belt; and a measuring instrument configured to measure the natural frequency of the belt based on the acceleration sensed by the acceleration sensor.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: October 3, 2017
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Hirofumi Miyata, Yoshikazu Wakizaka, Yasushi Chida
  • Patent number: 9658131
    Abstract: The present disclosure provides a testing apparatus of an auxiliary belt system. The testing apparatus of the auxiliary belt system includes: a tester bracket, a torque pulse simulation motor mounted to the tester bracket, a crankshaft pulley mounted to the tester bracket and rotated by operations of the torque pulse simulation motor, an auxiliary system mounted to the tester bracket, connected to the crankshaft pulley through a belt and rotated by rotation of the crankshaft pulley and a controller controlling operations of the torque pulse simulation motor.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: May 23, 2017
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jong Won Lee, Key Chun Park, Eui Chul Choi, Yong Woo Kim, Jae Ik Ahn
  • Patent number: 9464949
    Abstract: A “semi-automated” device, method and/or system for the determination of line sag in a tensioned (e.g., power) line is described. A prescribed number of waves based on the waves required by a given sag-tension chart is input. After the device is directly or indirectly attached onto the line, the user then induces a wave on the line either by pulling/striking the tensioned line. The device automatically measures the acceleration/inflection of the passing waves and the time of arrival of waves, as well as ambient temperature, and signaling the user upon completion of the measurement. These recorded values can be used to determine the actual sag of the tensioned line, thus avoiding the current error-prone approach of using a manual stopwatch and visual deflection of the waves.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: October 11, 2016
    Inventors: Andrew E. Mahlen, Ali T. Alniemi, Bryan C. King
  • Patent number: 9335204
    Abstract: A method is provided that includes transmitting an alternating current along a wire placed along a given axis relative to a magnetic element producing a magnetic field having an axis. The wire may be stretched such that the wire has an audible fundamental frequency. Additionally or alternatively, the alternating current may be a continuous alternating current. The method also includes in at least one instance, detecting a vibration of the wire thereby indicating that a transverse component of the magnetic field is coupled with the alternating current. And in the respective instance(s), the method includes adjusting a position of the wire or magnetic element to at least reduce the vibration of the wire thereby indicating increased alignment of the given axis and magnetic-field axis.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: May 10, 2016
    Assignee: The Boeing Company
    Inventor: Arthur M. Vetter
  • Patent number: 9222854
    Abstract: A dynamic load estimation system and method is provided, the system including a tire supporting a vehicle; a vehicle-mounted acceleration sensor for determining a vehicle lateral acceleration and a vehicle longitudinal acceleration; a roll angle calculating model for determining a vehicle roll angle; a roll rate calculating model for determining a vehicle roll rate; a static normal load calculation model for calculating a measured static normal load; and a dynamic tire load estimation model for calculating an estimated dynamic load on the tire from the measured static normal load, the vehicle roll angle, the vehicle roll rate, the vehicle lateral acceleration and the vehicle longitudinal acceleration.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 29, 2015
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Kanwar Bharat Singh, Anthony William Parsons, Marc Engel
  • Patent number: 9021897
    Abstract: A force measuring device. The device comprises an x-axis sensor beam for measuring x-direction forces, a y-axis sensor beam for measuring y-direction forces, a z-axis sensor beam for measuring z-direction forces, and wherein the x-axis, y-axis and z-axis sensor beams are decoupled such that forces exerted by a specimen in one direction do not exert substantial forces on the other two sensor beams.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: May 5, 2015
    Inventor: Shengyuan Yang
  • Patent number: 8671758
    Abstract: A system and method for measuring a frequency of a wire in a vibrating wire gauge. The system may include a signal generator for generating a signal at a frequency that matches a frequency of the wire vibration and an excitation unit for exciting the wire to increase an amplitude of the wire vibration. The excitation unit may excite the wire using the signal. The system may further include a signal gate for controlling when the signal is sent to the excitation unit.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: March 18, 2014
    Assignee: Campbell Scientific, Inc.
    Inventors: Larry Eugene Jacobsen, Scott Steven Cornelsen
  • Patent number: 8516904
    Abstract: A strain sensor apparatus for a rotatable shaft including a radiation emitter/receiver, a vibration element attached to the shaft and a reflector that is positioned to reflect radiation onto the vibration element.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: August 27, 2013
    Assignee: Rolls-Royce, PLC
    Inventors: Werner Schiffers, John R. Webster
  • Patent number: 8505394
    Abstract: A strain sensor apparatus for a rotatable shaft including a radiation emitter/receiver, a vibration element attached to the shaft and a radiation-reflective annulus surrounding the shaft and vibration element.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: August 13, 2013
    Assignee: Rolls-Royce PLC
    Inventors: Werner Schiffers, John R. Webster
  • Patent number: 8452552
    Abstract: A method for checking a vibration damper of a motor vehicle in the installed state includes setting start values of the damping constant kA, the spring rate cA, and the body mass mA for a wheel of a motor vehicle; inducing a vertical vibration of the motor vehicle with the aid of a defined excitation sRreal; determining the theoretical body vibration excursion sAmodel; optically detecting the positions of the wheel and the body shell of the motor vehicle at a plurality of detection instants during the vibration; minimizing the error function formed from the deviations between the theoretical body vibration excursion sAmodel and the observed body vibration excursion sAreal at the detection instants, and determining the damping constant kA, the spring rate cA, and the body mass mA therefrom; and determining the damping measure ? of the vibration damper.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: May 28, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Guenter Nobis, Daniel Wegener, Steffen Abraham
  • Patent number: 8397591
    Abstract: A process for testing the quality, in particular the stiffness and the phase, of an elastic joint for connecting two other parts while filtering vibrations transmitted between these two other parts, said elastic joint being meant to work in axial, radial or torsional direction, disposing or not disposing of one or more hydro-elastic chambers and of two cylindrical concentric support elements, the inner support element being located to a large extend inside the volume defined by the outer support element, the two support elements being connected by a set of components made of rubber or elastomer or, if applicable, of plastic and metallic parts, wherein said support elements are themselves respectively attached to the two other parts which the elastic joint connects, wherein a technique of testing by impact is applied within the timing of the production line of the elastic joint, i.e.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: March 19, 2013
    Assignee: Anvis SD France S.A.S.
    Inventor: Serge Verger
  • Publication number: 20120325018
    Abstract: Systems and methods for measuring environmental conditions of a sensing location, where a sensor including a measuring surface and a wire coupled in tension to the measuring surface over which ultrasonic signals may be transmitted and sensed. Signal analysis of ultrasonic signals transmitted over the tensioned wire are analyzed to measure one or more environmental conditions acting on the measuring surface.
    Type: Application
    Filed: June 22, 2011
    Publication date: December 27, 2012
    Applicant: ETEGENT TECHNOLOGIES LTD.
    Inventors: Richard Allan Roth, II, Christopher George Larsen, Stuart James Shelley, Logan Alexander Niehaus
  • Patent number: 8072310
    Abstract: A detection and paramedic measuring system using a transponder composed of passive components and pulse inductive interrogation is disclosed. A methodology based on measuring the quality factor of the transponder is employed to detect a specific species of transponder or measure a parameter that alters the transponders quality factor.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: December 6, 2011
    Assignee: Pulsed Indigo Inc.
    Inventor: Howard Richard Everhart
  • Publication number: 20110179883
    Abstract: A tunable nanoscale resonator has potential applications in precise mass, force, position, and frequency measurement. One embodiment of this device consists of a specially prepared multiwalled carbon nanotube (MWNT) suspended between a metal electrode and a mobile, piezoelectrically controlled contact. By harnessing a unique telescoping ability of MWNTs, one may controllably slide an inner nanotube core from its outer nanotube casing, effectively changing its length and thereby changing the tuning of its resonance frequency. Resonant energy transfer may be used with a nanoresonator to detect molecules at a specific target oscillation frequency, without the use of a chemical label, to provide label-free chemical species detection.
    Type: Application
    Filed: February 11, 2011
    Publication date: July 28, 2011
    Applicant: The Regents of the University of California
    Inventors: Alex K. Zettl, Kenneth J. Jensen, Caglar Girit, William E. Mickelson, Jeffrey C. Grossman
  • Publication number: 20110107851
    Abstract: A process for testing the quality, in particular the stiffness and the phase, of an elastic joint for connecting two other parts while filtering vibrations transmitted between these two other parts, said elastic joint being meant to work in axial, radial or torsional direction, disposing or not disposing of one or more hydro-elastic chambers and of two cylindrical concentric support elements, the inner support element being located to a large extend inside the volume defined by the outer support element, the two support elements being connected by a set of components made of rubber or elastomer or, if applicable, of plastic and metallic parts, wherein said support elements are themselves respectively attached to the two other parts which the elastic joint connects, wherein a technique of testing by impact is applied within the timing of the production line of the elastic joint, i.e.
    Type: Application
    Filed: April 14, 2009
    Publication date: May 12, 2011
    Applicant: ANVIS SD FRANCE S.A.S.
    Inventor: Serge Verger
  • Patent number: 7890278
    Abstract: Some embodiments of the present invention provide a system that characterizes a response of a device in a computer system to vibration over a frequency range. During operation, the device is vibrated at each frequency in a set of frequencies in the frequency range, wherein the device is vibrated at each frequency, one frequency at a time, until a stabilized response of the device is determined. The response of the device to vibration over the frequency range is then characterized based on information related to the stabilized response at each frequency in the set of frequencies.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: February 15, 2011
    Assignee: Oracle America, Inc.
    Inventors: Dan Vacar, Anton A. Bougaev, David K. McElfresh, Kenny C. Gross
  • Patent number: 7779690
    Abstract: Systems and methods for analyzing the resonant frequency of vibratory wires within vibratory wire gauges. The resonant frequency of the vibrating wire is determined by using an interface that digitizes the response of an excited wire in the gauge. A transform then converts the digitized data into a frequency spectrum. The resulting spectrum is used to estimate the resonant frequency of the vibrating wire. The resulting measurement or estimate of the resonant frequency can be used to measure or determine some physical characteristic of the device or structure or system connected to the gauge.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: August 24, 2010
    Assignee: Campbell Scientific, Inc.
    Inventors: Larry Eugene Jacobsen, David L. Israelsen, Jody A. Swenson
  • Patent number: 7688010
    Abstract: Preferred embodiments of the invention comprise an automatic reel capable assisting a user when attempting to unspool a linear material, such as a water hose. The automatic reel includes a control system having a motor controller capable of sensing a pulling of, or increased tension of, the linear material and capable of causing a motor to rotate to unspool the linear material. In certain embodiments, the motor controller tracks the length of the unspooled portion of the linear material and/or reduces the spooling speed of the motor when retracting a terminal portion of the linear material.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: March 30, 2010
    Assignee: Great Stuff, Inc.
    Inventors: Ramon Anthony Caamano, Michael J. Lee, James B. A. Tracey, Martin Koebler
  • Patent number: 7574927
    Abstract: A tensiometer for measuring thread tension, provided with a bending element fixed at one end and tensioned at the other end by the thread, at least one sensor element and damping device for oscillating the bending element. The damping device has at least one mass damper fixed to the bending element by means of a spring body.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: August 18, 2009
    Assignee: IRO AB
    Inventor: Stefano Lamprillo
  • Patent number: 7536924
    Abstract: A high frequency flexure-based dynamometer for measuring vibrations to use in determining cutting forces in a tool is disclosed. The dynamometer device may operate within a pre-selected high frequency range while measuring cutting forces less than about 1 N. The dynamometer may include two coupled flexures that interact to produce vibration modes at the edge of a selected bandwidth of interest. These modes may produce a frequency response function within the desired frequency band that has a magnified response and is substantially constant. The dynamometer may include a workpiece mounted to one of the two flexures and a one or more precision accelerometers mounted to the first or second flexures. Finite element analysis may be used to optimize the flexure design.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: May 26, 2009
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: Tony Lavaun Schmitz, Gregory Scott Duncan, John Charles Ziegert, David Corbin Burton
  • Patent number: 7513162
    Abstract: Vibration sensors or measurement detectors having connecting cables (40) for electrical supply voltages and/or signal voltages are provided with a clamping or winding space (42) on the bottom of the sensor housing (10). One or more turns of the respective connecting cable is deposited with in the clamping or winding space when the sensors are screwed tightly onto a machine or the like. The connecting cable can have any optional azimuth angle relative to the sensor coordinates and is well protected against external, damaging mechanical effects.
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: April 7, 2009
    Assignee: Prueftechnik Dieter Busch AG
    Inventor: Heinrich Lysen
  • Patent number: 7485100
    Abstract: An electromagnetic apparatus, comprises a conductive loop comprising two parallel conductive legs joined at a free end by a sample contacting member and a magnetic circuit that imposes a magnetic field in opposite directions across the respective legs. A method of mechanically characterizing a sample, comprises imposing a magnetic field in opposite directions in each of two parallel conductive legs of a conductive loop, the legs joined at a free end by a sample contacting member.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: February 3, 2009
    Assignee: Massachusetts Institute of Technology
    Inventors: Michael Garcia-Webb, Ian W. Hunter, Andrew J. Taberner
  • Patent number: 7478563
    Abstract: A method and apparatus for measuring tension in a stressed cable wherein the apparatus comprises two clamps, a circuit board and a power source. A transverse acceleration is generated in the stressed cable which is measured by an accelerometer in the apparatus, converted into an analog signal and transmitted to a portable computer programmed with software to calculate the cable tension from the fundamental period of vibration.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: January 20, 2009
    Inventor: Simon Weisman
  • Patent number: 7441464
    Abstract: A strain gauge sensor system and method for measuring the strain in a member, such as a fiber rope, has a sensor target assembly having a plurality of magnets carried spaced apart by individual gauge lengths along the member. Position and trigger sensor devices are configured spaced apart along side a desired path of travel of the member. When the member is fed along the desired path of travel, the trigger sensor device, in response to magnetically sensing a passing magnet, triggers the position sensor device to read the position of an adjacent passing magnet. The strain in the gauge length is determined from the read position. RFID tags placed on the member between the magnets can be identified by an RF reader to identify a particular gauge length being measured. The system can include a deployment device for feeding the member along the desired path.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: October 28, 2008
    Assignee: Honeywell International Inc.
    Inventors: Frank Turnbull, Wenwei Zhang
  • Publication number: 20080250872
    Abstract: The invention relates to a tensiometer (T), for measuring thread tension, provided with a bending element (B), fixed at one end (2), tensioned at the other end (3) by the thread (Y), supporting at least one sensor element (E) and provided with a damping device (D), for the vibrations of the bending element (B), whereby the damping device (D) comprises at least one mass damper (M), fixed to the bending element (B) by means of a spring body (F).
    Type: Application
    Filed: July 7, 2005
    Publication date: October 16, 2008
    Inventor: Stefano Lamprillo
  • Patent number: 7305883
    Abstract: The present invention provides sensors based on micromachined ultrasonic transducer technology. The sensors preferably include a plurality of sensor elements, but may include only one sensor element. Arrays of sensors are also provided. Sensor elements include a functionalized membrane supported over a substrate by a support frame. The functionalized membrane, support frame and substrate together form a vacuum gap. The sensor element is connected to an electrical circuit, which is configured to operate the sensor element at or near an open circuit resonance condition. The mechanical resonance frequency of the functionalized membrane is responsive to binding of an agent to the membrane. Thus, the sensor element also includes a detector, where the detector provides a sensor output responsive to the mechanical resonance frequency of the sensor element.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: December 11, 2007
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Butrus T. Khuri-Yakub, Calvin F. Quate, James K. Gimzewski
  • Patent number: 7143657
    Abstract: A planarity-measuring roller for metallic strip has a plurality of force sensors set in respective outwardly open recesses in a roller body with respective covers overlying the sensors in the recesses, generally flush with an outer surface of the body, and spaced by a gap from the respective recesses. Metal foils overlie the recesses and are adhered to the covers and to the outer surface of the roller body all around the recesses.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: December 5, 2006
    Assignee: BWG Bergwerk- und Walzwerk- Maschinenbau GmbH
    Inventor: Andreas Noe
  • Patent number: 7035718
    Abstract: A method and system to reduce vibration in a turbine-generator including measuring a magnitude of radial vibration of a turbine shaft with at least one vibration sensor configured to generate a vibration signal indicative of vibration frequency; measuring a generator power output with a power output sensor configured to generate a generator power output signal; detecting vibration frequencies in a rough load zone range; engaging an air injection means when a magnitude of radial vibration detected in the rough load zone range is above a predetermined threshold; storing a generator power output level as a reference level when engaging the air injection means; and disengaging the air injection means when either the measured generator power output exceeds a predetermined level or the measured generator power output differs from the reference level by a predetermined amount.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: April 25, 2006
    Assignee: General Electric Company
    Inventors: Raymond Verle Jensen, James Robert Rasmussen
  • Patent number: 6876715
    Abstract: Object of this invention is to provide an axial torsional vibration measurement device of the reactor internal pump capable of measuring the axial torsional vibration easily. The vibration detector 2 that detects vibration in the radial direction, and the sound detector 3 that detects vibration in the circumferential direction are fitted on cylindrical motor casing 6, which contains the motor of a reactor internal pump. The dimension of both signals of a vibration waveform signal detected by the vibration detector 2, and a sound waveform signal detected by the sound detector 3 are matched in vibration calculating device 15, to thereby obtain an axial torsion vibration of a motor from the difference of both signals.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: April 5, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Naoto Hikida, Seiichi Matsumura
  • Patent number: 6751281
    Abstract: Object of this invention is to provide an axial torsional vibration measurement device of the reactor internal pump capable of measuring the axial torsional vibration easily. The vibration detector 2 that detects vibration in the radial direction, and the sound detector 3 that detects vibration in the circumferential direction are fitted on cylindrical motor casing 6, which contains the motor of a reactor internal pump. The dimension of both signals of a vibration waveform signal detected by the vibration detector 2, and a sound waveform signal detected by the sound detector 3 are matched in vibration calculating device 15, to thereby obtain an axial torsion vibration of a motor from the difference of both signals.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: June 15, 2004
    Assignee: Hitachi, Ltd.,
    Inventors: Naoto Hikida, Seiichi Matsumura
  • Patent number: 6679123
    Abstract: A method and apparatus are described for non-contact measurement of torque applied to a torque-bearing member such as a shaft. The method involves the use of a piezoelectric transducer mechanically coupled to the shaft for rotation therewith, and having electrical characteristics responsive to applied torque. Electrical signal characteristics are changed by the torque-dependent transducer characteristics. The electrical signals are coupled to the outside (non-rotating) world by at least one capacitive coupler. In one embodiment, an fixed-frequency oscillator produces signal, and the transmission of the signal is affected by the torque-dependent resonant frequency of the transducer. In another embodiment, the transducer is coupled in the feedback loop of a circuit to form an oscillator, in which the frequency is responsive to the torque. A transducer may be placed and distributed in a protective holder. The holder may be pierced in particular locations in order to increase or decrease its sensitivity.
    Type: Grant
    Filed: February 3, 2003
    Date of Patent: January 20, 2004
    Inventor: Ryszard Marian Lec
  • Patent number: 6637276
    Abstract: A tire sensor assembly that is embedded in an elastomeric tire at a particular radial depth inwardly from a contact patch of the tire includes a flexible generally pyramid-shaped body and a pair of first strain sensors disposed on first opposed faces of the pyramid-shaped body, the first strain sensors detecting a force in a first direction. In addition, the assembly includes a pair of second strain sensors disposed on second opposed faces of the pyramid-shaped body, the second strain sensors detecting a force in a second direction. Moreover, each face of the first and second opposed faces is non-planar. Preferably, the first and second opposed faces of the pyramid-shaped body are curved and generally symmetrical about an axis extending longitudinally through the apex of the body so as to allow adjustment of the sensitivity of the sensor assembly generally independent of the radial depth.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: October 28, 2003
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Dennis M. Adderton, Stephen C. Minne
  • Patent number: 6628124
    Abstract: A sensor unit is formed by a single integral body obtained by coupling a resiliently deforming portion with a base portion without interposing a soft material therebetween, and a force applied to a probe secured to a front end of the resiliently deforming portion is measured as a change in capacitance of a capacitor constituted by electrodes secured to opposing surfaces of the resiliently deforming portion and base portion. These electrodes are connected to a resonance circuit of a high frequency oscillation circuit, and in order to measure a change in a resonance frequency which is varied in accordance with the applied force, an output signal from the high frequency oscillation circuit is counted by a digital frequency counter for a predetermined time period. It is possible to provide the electrocapacitive type force measuring apparatus which can measure a very small force with an extremely high precision without being affected by temperature variation, humidity variation and secular variation.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: September 30, 2003
    Assignees: Riken, S. T. Research Company, Limited
    Inventors: Yutaka Yamagata, Tsunehiko Ozaki, Victor Morozov, Kozo Inoue
  • Patent number: 6619135
    Abstract: A force sensor having a substrate for measuring forces is provided, on which substrate a first path and a second path for travel of acoustic surface waves are arranged. The two paths are arranged essentially parallel to one another and their lengths are different. An effect of a force on the substrate is detectable by measuring a time needed for an acoustic surface wave to travel at least one of the first and second paths.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: September 16, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Edwin Liebemann, Dietmar Arndt
  • Patent number: 6615676
    Abstract: A method and system for tensioning a belt, the system including a tensioning measuring head, a controller, and an air impact gun. The tension measuring head includes a vibration sensor and a belt striker. The controller activates the belt striker and receives signals from the vibration sensor indicative of the vibrations set up in the belt being tensioned. The measured vibrations are indicative of the tension on the belt, and are used by the controller to deactivate the air impact gun when the belt tension is determined to be at a desired level.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: September 9, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Brent C Rankin
  • Patent number: 6611178
    Abstract: There are provided a stable and highly sensitive nanometric mechanical oscillator having a considerably high detection resolution that enables detection of variation in force or mass on the nanometer order, as well as a method of fabricating the same, and a measurement apparatus using the same. A nanometric mechanical oscillator (10) includes a base (11), a tetrahedral oscillator mass (13); and an elastic neck portion (12) for connecting the base (11) and the tetrahedral oscillator mass (13). The oscillator (10) assumes a mushroom-like shape and has a nanometric size. The oscillator mass (13) assumes a tetrahedral shape and is suitable to be used as a probe of a scanning forth microscope in which the oscillator mass (13) serving as a probe is caused to approach to an arbitrary sample surface in order to observe the surface state.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: August 26, 2003
    Assignee: Japan Science and Technology Corporation
    Inventors: Hideki Kawakatsu, Hiroshi Toshiyoshi
  • Publication number: 20030136201
    Abstract: A patient monitoring system includes a replaceable laminar sensor to be placed on a bed, the sensor including distributed force sensing elements providing output signals to processing apparatus including a near-bed processor and a central processor coupled to the near-bed processor by a wireless communication link. The processing apparatus applies spatial weighting to the sensor output signals to derive the force distribution across the sensor, and processes the force distribution over time to generate patient status information such as patient presence, position, agitation, seizure activity, respiration, and security. This information can be displayed at a central monitoring station, provided to a paging system to alert attending medical personnel, and used to update medical databases. The sensor may be manufactured from layers of olefin film and conductive ink to form capacitive sensing elements.
    Type: Application
    Filed: March 3, 2003
    Publication date: July 24, 2003
    Inventor: James E. Hubbard
  • Patent number: 6595057
    Abstract: The present invention relates to a golf club head provided with a face and a body. The face has a central zone and a intermediate zone adjacent and surrounding the central zone. The central zone has a first flexural stiffness and the intermediate zone has a second flexural stiffness. The club head face is configured and dimensioned such that the first flexural stiffness is significantly greater than the second flexural stiffness such that upon ball impact with the face, the intermediate zone exhibits substantial deformation so that the central zone moves into the club head. At the same time, the central zone exhibits minimal deformation so that it moves into and out of the club head as a unit. Furthermore, the face exhibits a high coefficient of restitution.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: July 22, 2003
    Assignee: Acushnet Company
    Inventors: Laurent C. Bissonnette, Nicholas M. Nardacci, Raymond L. Poynor
  • Patent number: 6588088
    Abstract: A wire tensioning apparatus and method tensions one or more wires by moving the tensioning function from a wire module to an apparatus external to the wire module. Externally to the wire module, a wire is attached to a fixed end and a movable end. Tension is placed on the wire, and the tension in the wire or the vibrational frequency of the wire is detected and compared to a desired value. If the tension in, or the vibrational frequency of, the tensioned wire does not correspond to the desired value, the tension is further adjusted until the desired value is met. Once the desired tension or the vibrational frequency is met, the wire is secured in the wire module in order to maintain the achieved tension and/or vibrational frequency.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: July 8, 2003
    Assignee: Xerox Corporation
    Inventors: Leopold B. Dondiz, Timothy C. Warren, Patricia Moran
  • Patent number: 6523423
    Abstract: A force sensor includes: a supporting base having a hollow portion, a flexible plate having at least one detecting element and extending across over the hollow portion, and an operating member suspended over the hollow portion by the flexible plate. Inclined strength is given to the flexible plate so that it becomes stronger from an arbitrary position between the outer periphery of the operating member and the inner periphery of the supporting base toward the outer periphery of the operating member and/or toward the inner periphery of the supporting base. Another force sensor includes: a supporting base having a hollow portion, a flexible plate having at least one detecting element and extending across over the hollow portion, and an operating member suspended over the hollow portion by the flexible plate. A boundary between the flexible plate and the operating member and/or a boundary between the flexible plate and the supporting base have (has) a curvature.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: February 25, 2003
    Assignee: NGK Insulators, Ltd.
    Inventors: Masahiko Namerikawa, Kazuyoshi Shibata
  • Patent number: 6487764
    Abstract: This invention relates to a method of making a steel cable reinforced conveyor belt while monitoring the tensions of all the cables.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: December 3, 2002
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: David Paul Schweitzer, Thomas Goodsell Hutchins
  • Patent number: 6456898
    Abstract: A press monitoring and control system includes a press machine, a press configuration module and a press controller. The press machine has a lower die coupled to an upper die, wherein the lower die includes a top surface supporting a strip of material to be formed into a part after a stripper plate coupled to the upper die contacts the strip of material. The press configuration module includes an input module that processes a set of input data corresponding to a particular job and generates a data signal corresponding to the set of input data. The press controller is coupled to the press machine and the press configuration module. The controller processes the data signal, compares the data signal to a set of parameters corresponding to the particular job, and generates at least one servo signal to adjust at least one servo in response to the data signal.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: September 24, 2002
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Ronald A. Modesto, Robert Wojczak, Scott Krupp, Yvonne Luzney, Lyle J. Riffel, Thomas P. Zbikowski, Robert B. Mech
  • Publication number: 20020092364
    Abstract: A tire sensor assembly that is embedded in an elastomeric tire at a particular radial depth inwardly from a contact patch of the tire includes a flexible generally pyramid-shaped body and a pair of first strain sensors disposed on first opposed faces of the pyramid-shaped body, the first strain sensors detecting a force in a first direction. In addition, the assembly includes a pair of second strain sensors disposed on second opposed faces of the pyramid-shaped body, the second strain sensors detecting a force in a second direction. Moreover, each face of the first and second opposed faces is non-planar. Preferably, the first and second opposed faces of the pyramid-shaped body are curved and generally symmetrical about an axis extending longitudinally through the apex of the body so as to allow adjustment of the sensitivity of the sensor assembly generally independent of the radial depth.
    Type: Application
    Filed: April 27, 2001
    Publication date: July 18, 2002
    Inventors: Dennis M. Adderton, Stephen C. Minne
  • Publication number: 20020078762
    Abstract: A load sensor measuring a load by a change in oscillation frequency of a crystal (quartz) blank due to stress sensibility against thereof when a load is applied to opposing outer circumferential portions of the crystal blank. In the sensor, the crystal blank is formed in a shape such that when the load is applied, any mechanical deformation in a direction perpendicular to the plane of the blank is prevented. For example, the crystal blank is constituted by two regions, a vibrating portion having a relatively small thickness and a protective frame portion having a relatively large thickness. Alternatively, in a planar blank, a groove is formed so as to extend along the outer circumference of the blank. In the rectangular blank, the frame portion or groove is preferably arranged along sides of the blank parallel with a direction in which the load is applied.
    Type: Application
    Filed: December 21, 2001
    Publication date: June 27, 2002
    Applicant: NIHON DEMPA KOGYO CO., LTD
    Inventors: Akio Chiba, Kozo Ono, Masami Yamanaka, Motoyuki Adachi
  • Patent number: 6356848
    Abstract: The invention broadly provides a method and apparatus for measuring the power output of one powering a vehicle or other system driven by the elongate flexible member such as chain. In a preferred embodiment described, the vehicle is a bicycle. The method of the invention comprises measuring the speed and tension of the drive chain and calculating the power output therefrom. The apparatus of the invention includes a chain speed sensor, a chain tension sensor, and electronic processing apparatus to calculate and display the power output based upon the chain measurements.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: March 12, 2002
    Assignee: Polar Electro OY
    Inventors: Alan Cote, Jean-Joseph Cote, John C. Croy, Seppo Nissilä
  • Publication number: 20010001931
    Abstract: A semiconductor mechanical sensor having a new structure in which a S/N ratio is improved. In the central portion of a silicon substrate 1, a recess portion 2 is formed which includes a beam structure. A weight is formed at the tip of the beam, and in the bottom surface of the weight in the bottom surface of the recess portion 2 facing the same, an electrode 5 is formed. An alternating current electric power is applied between the weight portion 4 and the electrode 5 so that static electricity is created and the weight is excited by the static electricity. In an axial direction which is perpendicular to the direction of the excitation of the weight, an electrode 6 is disposed to face one surface of the weight and a wall surface of the substrate which faces the same. A change in a capacitance between the facing electrodes is electrically detected, and therefore, a change in a physical force acting in the same direction is detected.
    Type: Application
    Filed: December 28, 2000
    Publication date: May 31, 2001
    Applicant: DENSO Corporation
    Inventors: Tetsuo Fujii, Masahito Imai
  • Patent number: 6199021
    Abstract: The invention broadly provides a method and apparatus for measuring the power output of one powering a chain driven vehicle. In a preferred embodiment described, the vehicle is a bicycle. The method of the invention comprises measuring the speed and tension of the drive chain and calculating the power output therefrom. The apparatus of the invention includes a chain speed sensor, a chain tension sensor, and electronic processing means to calculate and display the power output based upon the chain measurements.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: March 6, 2001
    Assignee: CC Kinetics, Inc.
    Inventors: Alan Cote, Jean-Joseph Cote, John C. Croy