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| Number | Title | Issue Date |
| 7836775 | Yarn tensiometer Tensiometer for measuring the force imparted by a yarn on a bending element which is secured in a fixation, having a unitary oscillation-damping element made of an intrinsically damping material like rubber or an elastomer, the unitary damping element including a ba... | 11/23/2010 |
| 7366627 | Method for satisfying certification requirements and verifying the integrity of structural health management systems A method is disclosed wherein a plurality of sensors mounted on a structure, a baseline data set for each of the plurality of sensors and a calibration procedure verify the integrity of a structural health management system. Initially a baseline data set is establis... | 04/29/2008 |
| 7353715 | System, apparatus and method for testing under applied and reduced loads A system which cyclically applies and reduces a load on a test specimen and which can use an apparatus comprising: (a) a frame; (b) a load adjusting section having a fluidic mechanical muscle that contracts and extends in length to cyclically apply and reduce a load... | 04/08/2008 |
| 7347106 | Torque sensor with inverted sensing element and integral shaft housing Torque sensing methods and systems are disclosed. In general, a sensing element and a sensor housing can be provided for maintaining the sensing element. A plurality of wirebond posts can be assembled perpendicular to a plane of the sensing element. The sensing elem... | 03/25/2008 |
| 7324029 | Capacitance-to-digital interface circuit for differential pressure sensor A two phase, second order capacitance-to-digital (CD) modulator includes a first stage sigma-delta integrator that forms charge packets as a function of sensor capacitance during an auto-zero phase and integrates the packets during an integration phase to produce an... | 01/29/2008 |
| 7319421 | Foldback free capacitance-to-digital modulator A capacitance-to-digital (CD) modulator converts capacitance of a differential pressure sensor to a pulse code modulation output signal. The first stage of the CD modulator is a sigma-delta integrator having an auto-zero capacitor connected between an integrator inp... | 01/15/2008 |
| 7286964 | Methods for monitoring structural health conditions Methods and recordable media for monitoring structural health conditions. The present invention provides a method for interrogating a damage of a host structure using a diagnostic network patch (DNP) system having patches. An interrogation module partitions the plur... | 10/23/2007 |
| 7260516 | Optimization of a design An apparatus, system, and method for optimization. The apparatus, system, and method include a mechanism for ending an optimization when all models within one design tolerance of an optimum model have been simulated. ... | 08/21/2007 |
| 7236113 | Capacitance-to-digital modulator with sensor failure-mode detection A pressure transmitter having a capacitance-to-digital modulator produces an output as a function of sensor capacitance and a reference capacitance. Transmitter also includes a sensor failure mode detector produces an output signal and identifies failure modes of th... | 06/26/2007 |
| 7233886 | Adaptive modeling of changed states in predictive condition monitoring An improved empirical model-based surveillance or control system for monitoring or controlling a process or machine provides adaptation of the empirical model in response to new operational states that are deemed normal or non-exceptional for the process or machine.... | 06/19/2007 |
| 7222515 | Impact test apparatus and impact test method An impact test apparatus includes a holding device for holding a test piece at an arbitrary holding force, an impact applying device for applying an impact force to the test piece held by the holding device, a force sensor for sensing the impact force applied to the... | 05/29/2007 |
| 7204162 | Capacitive strain gauge A strain gauge for sensing strain is provided and includes a support substrate, and first and second electrodes supported on the substrate. The first and second electrodes include first and second capacitive plates, respectively. The first capacitive plates are mova... | 04/17/2007 |
| 7174792 | Multi-axis transducer An improved multi-axis transducer includes a stack of ferroelectric layers and a plurality of common electrodes and addressing electrodes alternately disposed between the ferroelectric layers; each of the addressing electrodes including a number of sections electric... | 02/13/2007 |
| 7167009 | Method and apparatus for determining electrical properties of structures A method and apparatus for determining an electrical property of a structure. The method involves creating a model of an electrical property of a structure and measuring the electrical property of the structure between at least two of a plurality of locations. The m... | 01/23/2007 |
| 7103520 | Methods and apparatus for model based shrouded bellows stiffness determinations A modeling system predicts natural frequency responses in tube sub-systems including shrouded bellows components. The system determines a stiffness multiplier from input values and uses the determined flexibility factor to determine the natural frequency responses. ... | 09/05/2006 |
| 7096748 | Embedded strain gauge in printed circuit boards An apparatus generally having a circuit board and a first strain gauge is disclosed. The circuit board may have a plurality of insulating layers. The first strain gauge may be disposed between two of the insulating layers. ... | 08/29/2006 |
| 7062357 | Multiple region convolver with tapering A multiple region convolver includes tapering between successive models of a physical system. The tapering is performed during a transition period. ... | 06/13/2006 |
| 7054748 | Vibration monitoring device and system The present invention is a portable vibration monitoring device and system for evaluating the degradation of rotating components, the monitoring device being a portable electronic system which receives vibration and varying speed rotational data from one or more rot... | 05/30/2006 |
| 7052096 | Vehicle antilock brake control system A vehicular antilock brake control system does not require a lengthy extension piping from its actuator. The system provides for an accurate controlling method for maximizing a calculated road surface friction coefficient. Each wheel has a control unit consisting of... | 05/30/2006 |
| 7032457 | Method and apparatus for dielectric sensors and smart skin for aircraft and space vehicles A new family of multifunctional smart coatings based on diamond-like atomic-scale composite materials which can provide a real-time control of the surface stress distribution and potentially dangerous stress diagnostic for the most critical parts of flying vehicles.... | 04/25/2006 |
| 7031949 | Method and apparatus for generating input signals in a physical system A method and apparatus for controlling a physical system responsive to an input to produce a selected output comprises defining a virtual identity system that includes the physical system for receiving the input to provide an actual output. A quality of identity of ... | 04/18/2006 |
| 6975088 | Automatic dynamic joint tensioning system A system for automatically adjusting a fastener screw of a pivot joint between first and second parts of a pair of scissors, each part having a blade and a respective handle. A part clamp engages and holds the handle of the first part. A torque arm engages and moves... | 12/13/2005 |
| 6957172 | Complex signal decomposition and modeling A system, method and program product for monitoring a complex signal for ultrasensitive detection of state changes, or for signature recognition and classification is provided. A complex signal is decomposed periodically for empirical modeling. Wavelet analysis, fre... | 10/18/2005 |
| 6957166 | Method and apparatus for load rate monitoring A system for real-time monitoring of the dynamic loading rate on support systems used in underground mines and other situations is provided. The load rate monitoring apparatus uses a programmable microcontroller to monitor and calculate the loading rates on the supp... | 10/18/2005 |
| 6951138 | Method and apparatus for an ocean bottom seismic acquisition technique A seismometer having a hydrodynamically efficient shaped body containing a seismic sensor or source, having a propulsion unit located and a control unit for directional control of the propulsion unit for guiding the seismometer to and from an ocean floor. The seismo... | 10/04/2005 |
| 6679123 | Torque measuring piezoelectric device and method 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 e... | 01/20/2004 |
| 6508132 | Dynamic load cell apparatus A load cell for use in dynamic testing apparatus for mechanically testing samples includes an accelerometer mounted in the load cell on the same axis as the line of action of the mechanical force applied to the specimen under test. The resultant signal fr... | 01/21/2003 |
| 6053050 | Signal conditioning system A current-driven signal conditioning system comprising a first terminal, a second terminal, a strain gauge, and an instrumentation amplifier is disclosed. The strain gauge is adapted to measure a deformation of a structure and to generate a resistance whi... | 04/25/2000 |
| 5974895 | Capacitively measuring sensor and readout circuit A capacitance to be measured is connected together with three further capacitances to form a bridge circuit, in which each two of the capacitors are connected in series, and these two series circuits are connected in parallel to one another, and which rep... | 11/02/1999 |
| 5907095 | High-sensitivity strain probe The present invention is a high-sensitivity strain probe used in high-sensitivity sensor elements of force type. By the use of semiconductor process and wire bonding technology as well as integrated forming method, the fabricated elements include: a probe... | 05/25/1999 |
| 5896033 | Method and device for electronic compensation of electrical disturbance signals and use thereof The invention consists of a system to compensate for the parasitic signal induced by a parasitic impedance in the signal path. An auxiliary signal, outside of the frequency band of the desired signal, is introduced to evaluate the effects of the parasitic... | 04/20/1999 |
| 5872316 | In-die ejection force measurement in forming operations The measurement of ejection tonnage in a die in forming process uses an embedded, in-die sensor and signal filtering methods for a more refined interpretation of the weaker signals associated with die vibrations. In particular, a self-tuning (adaptive) fi... | 02/16/1999 |
| 5797623 | Smart skin sensor for real-time side impact detection and off-line diagnostics A low cost, high bandwidth "smart skin" impact sensor is developed for application to vehicle side impact detection and diagnostics. The sensor is based on a piezo polymer smart skin technology and can sense impact location and impact energy in real time ... | 08/25/1998 |
| 5777235 | Strain gage measuring arrangement, use of same, and modulation amplifier for such measuring arrangements In a measuring arrangement comprising a strain gage section (10) constructed of at least one SG (strain gage) (15), and integrated in a measurement pickup (1), an additional circuit (20) amplifies modulated output signals of the SG section (10), and is al... | 07/07/1998 |
| 5723792 | Stress composite sensor and stress measuring device using the same for structure The invention is intended to provide a stress measuring device for a structure, wherein a plurality of stress sensors are composited or integrated to provide an integrated single-packaged stress composite sensor, the latter being used to deliver X-axis, X... | 03/03/1998 |
| 5578761 | Adaptive piezoelectric sensoriactuator An adaptive algorithm implemented in digital or analog form is used in conjunction with a voltage controlled amplifier to compensate for the feedthrough capacitance of piezoelectric sensoriactuator. The mechanical response of the piezoelectric sensoriactu... | 11/26/1996 |
| 5558477 | Vibration damping system using active negative capacitance shunt circuit with piezoelectric reaction mass actuator Boring bar vibration damping is improved by a novel use of the electromechanical properties of the piezoelectric actuator material. A negative capacitance shunt circuit is provided in which a voltage-controlled voltage-source continuously simulates a nega... | 09/24/1996 |
| 5551304 | Method for setting sensing polarity of a sensor device A method for setting the sensing polarity of a sensor device (10) uses a switching bridge (22) having a wheatstone bridge configuration that is coupled to a sensing element (20) such that the polarity of the sensor device can be set by creating two electr... | 09/03/1996 |
| 5507187 | Wheel-acting force measuring device A wheel-acting force measuring device permits accurate measurement of a shearing stress by removing a torsional stress component measured by a stress detector. A stress sensor includes four sensor segments which measure stress by a change in a characteris... | 04/16/1996 |
| 5385185 | Round up control system for veneer lathe In a veneer lathe having a knife mounted to a knife support frame with a backing plate, a roundup control system for a veneer lathe is disclosed that recognizes or detects the production of usable veneer using the body of the knife as a signal source. Dur... | 01/31/1995 |
