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| Number | Title | Issue Date |
| 8146433 | Failure detect device and failure detect method A failure detect device detects the presence of a failure in a peripheral member of a rotary shaft by analyzing a vibration generated in a device provided with the rotary shaft when the rotary shaft is rotated. A vibration detection unit detects the vibration of the... | 04/03/2012 |
| 8136405 | Method and device for monitoring the dynamic behavior of a rotating shaft, in particular of a gas or steam turbine The invention relates to a method for monitoring the dynamic behavior, in particular of the oscillating behavior of a rotating shaft, the oscillation being detected by at least two sensors at defined different spatial position, the oscillating behavior in at least o... | 03/20/2012 |
| 8074499 | Method and system for detecting a crack on a turbomachine blade Embodiments of the present invention may provide real-time monitoring of a compressor section to determine the possibility of a crack forming on a rotating blade. The present invention does not require the shutdown of the machine. The present invention may be config... | 12/13/2011 |
| 8037768 | Vibrometer mounting mechanism Adjustment of the distance between the tip of a pickup section and the outer surface of a shaft of a rotor can be carried out easily and with high precision. In a vibrometer mounting mechanism securing a measuring section of a vibrometer for measuring vibration of a... | 10/18/2011 |
| 8015879 | Orientation aware sensor A sensor for detecting a parameter of an object includes a probe, a first sensing member for detecting the parameter of an object to be sensed and a second sensing member for determining an orientation of the probe relative to the object to be sensed. The second sen... | 09/13/2011 |
| 7997140 | Method and apparatus for troubleshooting noise/vibration issues of rotating components There is provided a method for troubleshooting noise/vibration issues of rotating components, the method comprising: receiving an audio signal of the rotating components in operation; generating a frequency spectrum corresponding to the audio signal; selecting a fre... | 08/16/2011 |
| 7908925 | Resonance response testing on a bearing An apparatus and associated method is provided for holding an inner race of a bearing stationary with respect to rotational movement while leaving a hub that is fixed in rotation with an outer race of the bearing unencumbered. The hub is excited by contactingly enga... | 03/22/2011 |
| 7861593 | Rotational vibration measurements in computer systems Embodiments of a mechanical device to facilitate in-situ measurements of vibration associated with a corresponding component in a computer system are described. This mechanical device includes a housing that has approximately a same mass as the component, approximat... | 01/04/2011 |
| 7861592 | Blade shroud vibration monitor A method for predicting a blade structure failure within a coupled blade structure including a plurality of blades supported for rotation on a rotor and a shroud structure coupling the blades. The method includes the steps of determining displacements of a plurality... | 01/04/2011 |
| 7854169 | Sensor device and rolling bearing with sensor A sensor device includes: a detected part D having a movable element 5 and a fixed element 3 contacting each other in which a contact area of the both elements changes corresponding to an external load; a contact area detection sensor 2, provide... | 12/21/2010 |
| 7775114 | Method of on-line turbine blade slope and sensor position verification A method of monitoring vibrations in a blade structure of a turbine including generating signals from a sensor located adjacent to a radial outer edge of the blade structure to sense passage of targets located on the blade structure. The sensor is mounted eccentrica... | 08/17/2010 |
| 7757562 | Technique and apparatus for detecting and monitoring internal defect conditions of mud pumps Technique for deterring and monitoring internal defect condition of a mud pump during the operation and/or in a laboratory conditions are illustrated. One or more acoustic transducers are attached in the proximity of one or more valves of the pump. Variation(s) in t... | 07/20/2010 |
| 7735370 | Method for testing the condition of a drive shaft of a rotary machine A method for non-destructive testing of a drive shaft that is accessible by only one of its ends in longitudinal waves, using a multi-element annular ultrasonic transducer. Such a transducer consists of independent elements that can be excited by electrical pulses o... | 06/15/2010 |
| 7707890 | Acoustic sensor for proactive fault monitoring in computer systems Embodiments of the present invention provide a system for detecting vibrations from a component. The system operates by coupling vibrations from a component to a membrane using a flexible connecting line. The membrane converts the vibrations into acoustic waves that... | 05/04/2010 |
| 7707889 | Method and apparatus for determination of oscillations on a rotating blade disc of a turbine A method for determining oscillations of a rotating blade disc of a turbomachine is provided. The method utilizes the steps including, arranging a substance that emits a light quanta when excited by an external excitation source to emit the light quanta, exciting th... | 05/04/2010 |
| 7661316 | Method and apparatus for sensing and controlling fan speed One embodiment of the present invention provides a system that determines fan speeds for a set of fans in a computer system. During operation, the system receives time-series data collected by a vibration transducer associated with the computer system, wherein the v... | 02/16/2010 |
| 7654145 | Non-synchronous vibrational excitation of turbine blades using a rotating excitation structure A method of measuring vibration in a bladed rotor structure with a vibration monitor. The vibration monitor includes a sensor for sensing passage of the sensor targets on radially outer portions of the blade structure, and the sensor generates signals corresponding ... | 02/02/2010 |
| 7624641 | Vibration sensing apparatus and washing machine having the same Disclosed is a vibration sensing apparatus and a washing machine having the same. The vibration sensing apparatus includes a variable resistor having variable resistance values according to each displacement, a displacement transmission unit interposed between the v... | 12/01/2009 |
| 7617733 | Method and apparatus for ultrasound phased array testing of bearing balls An automated scanning system and method, utilizing specialized dual phased array ultrasonic transducers for producing and detecting Rayleigh waves in ceramic bearing balls are provided for nondestructive, non-contact inspection of ceramic bearing balls. The phased a... | 11/17/2009 |
| 7591183 | Gas turbine engine with a plurality of bleed valves A health monitoring apparatus for a mechanical system includes: a microphone arranged to receive sound from the system; and a processor adapted to process the output of the microphone. The mechanical system may be a gas turbine engine. Further, the engine may have a... | 09/22/2009 |
| 7574918 | Method and apparatus for detecting vibrations from a mechanical component A system that detects vibrations from a mechanical component, such as a disk drive. The system includes an excitation rod, a membrane, and a microphone. During operation, the mechanical component is coupled to the excitation rod which is coupled to the membrane, so ... | 08/18/2009 |
| 7509862 | System and method for providing vibration detection in turbomachinery A system and method for providing blade vibration analysis of a turbine is provided. Generally, the system contains a non-contacting sensor capable of determining a distance or velocity of a blade, of the series of blades, in relationship to the sensor. The system a... | 03/31/2009 |
| 7487679 | Vehicle vibration analyzer A diagnostic vibration analyzing system and method for measuring and characterizing both linear and torsional vibrations in a vehicle or a piece of industrial equipment (collectively a “vehicle”). An electronic control unit and a plurality of sensors cooperate t... | 02/10/2009 |
| 7481116 | Device and method for measuring fan vibration An apparatus for measuring vibration of a fan includes a frame having an opening for enclosing a fan; a plurality of accelerometers disposed on the frame; and an elastic support for supporting the frame. An apparatus for measuring fan vibration includes a frame havi... | 01/27/2009 |
| 7458269 | Method for acquiring vibration data from rotating machines and portable vibration measuring device for use therein A method for acquiring vibration data from a plurality of rotating machines of a single type by using a portable vibration measuring device having means for measuring machine vibrations, means for data input, means for presenting information to a user, and a memory,... | 12/02/2008 |
| 7437935 | Continuous chatter boundary criteria for manufactured parts A chatter boundary system includes a measuring module, a comparison module, and a boundary module. The measuring module measures and collects samples of undulations in a manufactured part. The comparison module classifies a sound signal generated by the undulations ... | 10/21/2008 |
| 7430916 | Apparatus for detecting vibrations in a machine tool Provided herein is an apparatus for detecting vibrations in a machine tool having a rotor portion (2) which is provided with tool members (5) and defines an axis of rotation (2a), the apparatus comprising a sensor assembly (3) whic... | 10/07/2008 |
| 7430483 | Method and apparatus for diagnosing a mechanism A method of analyzing variations in an indicator of the behavior of a mechanism, in which noise is extracted, and any discontinuities from an indicator in order to obtain a trend, variations in the trend are compared with one or more reference values; and a fault of... | 09/30/2008 |
| 7428475 | Method of processing oscillatory data A method which permits the transformation of non-stationary response measurements into stationary data for analysis is provided. Many standard analysis techniques, particularly for oscillatory responses, are based on stationary data, and the method allows these tech... | 09/23/2008 |
| 7421349 | Bearing fault signature detection A device, and method, detects the presence of developing faults in rolling element bearings. Detection is accomplished by measuring the vibration of the apparatus in which the bearing is operating (motor, generator, engine, etc.) and searching for signatures unique ... | 09/02/2008 |
| 7415363 | High resolution torque measurement on a rotating shaft with movement compensation An apparatus for determining the torque imposed on a rotatable shaft. The shaft has at least four paired probes, paired horizontal probes and paired vertical probes. The horizontal probes are positioned 90 degrees apart from the vertical probes. If the shaft moves h... | 08/19/2008 |
| 7392713 | Monitoring system for turbomachinery A sensing system for monitoring a property of an electrically conductive moving element of turbomachinery. The sensing system includes a sensing system housing. A magnetic core is contained within the sensing system housing. A coil is positioned about at least a por... | 07/01/2008 |
| 7373823 | Method for determination of the stress on blades of a turbine machine during operation and corresponding device for carrying out said method The method serves to determine the vibrational state of turbine blades, arranged on a rotor shaft, mounted such as to rotate in a housing and/or of guide vanes. At least one electromagnetic wave is transmitted into a flow channel in the vicinity of the blades, using... | 05/20/2008 |
| 7372279 | Power generation unit condition monitor using frequency profile analysis A power generator unit condition monitoring system can receive a frequency profile generated by a frequency generating component and can transmit the received frequency to a frequency profile analyzer. The frequency profile analyzer analyzes the transmitted frequenc... | 05/13/2008 |
| 7370524 | Adaptive vibration control using synchronous demodulation with machine tool controller motor commutation A control system and method for actively reducing vibration in a spindle housing caused by unbalance forces on a rotating spindle, by measuring the force-induced spindle-housing motion, determining control signals based on synchronous demodulation, and provide compe... | 05/13/2008 |
| 7362229 | Ensuring the performance of mandated inspections combined with the collection of ancillary data During an inspection discrete checkpoints provide data to a portable reader, enabling a record to be generated identifying each checkpoint visited during an inspection. At least one checkpoint associated with the inspection will convey ancillary data to the portable... | 04/22/2008 |
| 7357031 | Precision sensor assembly for rotating members in a machine tool A precision sensor assembly for rotating members in a machine tool comprises a rotor unit (16) rigidly fixed to a rotor portion (2a) of the machine tool and including a sensor (5) for detecting vibrations produced by the operation of the ... | 04/15/2008 |
| 7351018 | Method and apparatus for measuring a depth of holes in composite-material workpieces being machined by an orbiting cutting tool A method and apparatus for measuring a hole depth in a composite-material workpiece machined by a orbital cutting tool, including the steps of applying a low-level electric potential to an electrically insulated cutting tool having a cutting head with radial and axi... | 04/01/2008 |
| 7348683 | Rotor for a wind energy turbine A the rotor for a wind energy turbine includes a hub and at least one rotor blade connected to the hub. The rotor also includes comprises at least one sensor for sensing at least one physical value of the rotor, e.g. mechanical stress, and a power supply for supplyi... | 03/25/2008 |
| 7341410 | Dynamical instrument for machining A dynamical instrument for machining comprising a sensor responsive to a non-rotating part of a machine proximate the tool of the machine for outputting a vibration signal, and a processor responsive to the sensor output configured to calculate a plurality of signat... | 03/11/2008 |
