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Class 73/794 - Plural diverse stress-strain tests or composite loads


Subclass of Class 73 - Measuring and testing
Definition: Subject matter combining at least two different types of
No. of patents: 115
Last issue date: 02/01/2011


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NumberTitleIssue Date
7878071Nanoindenter tip for uniaxial tension and compression testing
The invention is an indenter tip that is modified to permit both compression testing and tensile testing on samples having dimensions smaller than approximately 1 μm. The modified indenter tip has both a surface that can be used to apply compressive forces, and tin...
02/01/2011
7861599Instrument-equipped bicycle component and detection unit for equipping such a component
An instrument-equipped bicycle component has a detection unit for detecting at least one parameter representative of a stress exerted upon the component. The component may have a single piece or multiple parts that do not move relative to one another. The component ...
01/04/2011
7520176Method for real-time structure shape-sensing
The invention is a method for obtaining the displacement of a flexible structure by using strain measurements obtained by stain sensors. By obtaining the displacement of structures in this manner, one may construct the deformed shape of the structure and display sai...
04/21/2009
7373260Sensor infrastructure
A device for use in detecting an event in a structure includes a sensor encapsulation, the encapsulation containing a sensor, an actuator positioned substantially in-plane to the sensor within the housing and a printed circuit board in communication with at least on...
05/13/2008
7351608Method of precisely aligning components in flexible integrated circuit module
The present invention is a method of aligning components on a flexible integrated circuit. First a rigid substrate is selected. Next a flexible interconnect is deposited on the substrate, the interconnect preferably consisting of alternating polyimide and metal laye...
04/01/2008
7348502Counterbalance for a platform balance
A platform balance includes a first frame support and a second frame support movable relative to the first frame support. At least one counter balance assembly is provided to support the static weight of the first frames support and elements connected thereto. The c...
03/25/2008
7324007Instrumented rock bolt, data logger and user interface system
A rock bolt includes a hollow body and a gap along a length of the hollow body. At least one strain gauge is affixed to an inner surface of the rock bolt and is accessible from the gap. The rock bolt may include a data logger within the hollow body and coupled to re...
01/29/2008
7313971Material Testing Machine
A material testing machine includes a load mechanism for applying a load to a test piece, and a plurality of detectors for detecting physical values associated with the applied load. An A/D converter receives the output measurement data of each of the detected physi...
01/01/2008
7292951Systems for compensating for creep and hysteresis in a load cell
A method of compensating for hysteresis in a load cell, by: (a) pre-calibrating a load cell by: measuring load cell deflection under progressively increasing loads; determining a first set of coefficients correlating the deflection of the load cell to the measured l...
11/06/2007
7289892Power train inspection system, power train inspected by power train inspection system, and control unit for power train
The present invention provides inspection of a transmission with higher precision and in a shorter period of time. Before a finished A/T is inspected, a V/B ASSY and an ECU are inspected together by a V/B tester in a subsidiary line. A solenoid current command value...
10/30/2007
7242212Liquid crystal display panel test apparatus
A liquid crystal display (LCD) panel test apparatus includes a testing table on which an LCD panel is positioned for testing. A photographing unit disposed over the testing table photographs the LCD panel, enabling an evaluation of the alignment state of the LCD pan...
07/10/2007
7219555Method and apparatus for testing a joint replacement device
An apparatus and method for testing components of a joint replacement device in desired articulation relative to one another under a load, include: a first unit or step operable to impart undulating orientations of a first member of the joint replacement device; and...
05/22/2007
7204152Apparatus and method for fatigue testing
A method of simulating life of a rotor blade mounting feature mounted in a complementary rotor disc mounting feature comprises the steps of providing two specimen mounting features (37) each having portions defining pressure faces matching in profile respecti...
04/17/2007
7204153Apparatus and a method for testing attachment features of components
An apparatus (10) for testing attachment features (26,28,30,32) of components (12,14) comprises a first member (16) having a first end (18), a second end (20), a first edge (22) and a second edge (24). The firs...
04/17/2007
7181979Method and system for inspecting flexible device
A system for inspecting a flexible device is provided, which is used for performing a performance inspection on a flexible device in a bending state, or after the flexible device has finished bending test so as to obtain a mechanical reliability. The inspecting syst...
02/27/2007
7167009Method 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
7096728Polymer melt and elastomer extension fixture
A system for making extensional measurements on a sample includes an armature, a motor drive shaft, a moveable cylinder, and a fixed cylinder. The motor drive shaft is attached to the armature. The moveable cylinder is mounted on the armature. The sample is stretche...
08/29/2006
7096713Testing assembly and clamping fixture for measuring friction and loosening torque at different temperatures
A testing assembly measures the friction of a coating of a test piece having a defined length. The testing assembly comprises a base and a tower fixedly secured to the base. A receiving channel extends through the tower. The receiving channel has a predetermined dia...
08/29/2006
7028448Dispensing apparatus and method of dispensing
A dispensing apparatus is provided suitable for dispensing at least first and second components in desired ratios especially for multi-component packaged food products. The apparatus comprises a hopper having an outlet at its lower end and a first auger having a hol...
04/18/2006
7028556Load acquisition for machine clamp registries
A method and apparatus for monitoring clamp loads used to clamp production pallets in position in a transfer machining line is disclosed. The steps include substituting a test pallet for a production pallet during a production cycle. The test pallet includes at leas...
04/18/2006
6964201Large dimension, flexible piezoelectric ceramic tapes
A flexible detection/test tape includes a first flexible conductive layer, and a second flexible conductive layer positioned opposite the first conductive layer. A plurality of at least one of sensors, actuators or transducers are positioned between and are bonded t...
11/15/2005
6938494Load test machine
A load test machine includes a base block, at least a pair of posts rising from the base block, a cross head spanning between the pair of posts, and an actuator mounted on the base block or the cross head. The actuator is able to apply a load on a test piece positio...
09/06/2005
6907791Methods and systems for determining fatigue usage factors for reactor components
A method for calculating a fatigue usage factor of a component in a nuclear reactor includes determining a flow scaling factor for each stress component of a stress cycle, applying the flow scaling factor to rapid cycling stress conditions, and performing a fatique ...
06/21/2005
6904737Dispensing apparatus and method of dispensing
A dispensing apparatus is provided suitable for dispensing at least first and second components in desired ratios especially for multi-component packaged food products. The apparatus comprises a hopper having an outlet at its lower end and a first auger having a hol...
06/14/2005
6901809Structural stress analysis
This need is met by the present invention wherein structural stress in a fatigue-prone region of a structure is determined by using the nodal forces and displacement values in the fatigue-prone region, or equilibrium-equivalent simple stress states consistent with e...
06/07/2005
6901811Test device for femoral head prosthesis
The invention concerns a device for testing, in a destructive or non-destructive manner, femoral head prosthesis having a blind hole for receiving the end of a femoral prosthesis rod. The device includes a frame provided with a shaft projecting from the frame, said ...
06/07/2005
6860148High throughput fabric handle screening
A method for screening fabric handle of an array of fabric samples (i.e., a plurality of fabric materials) comprising providing an array of at least two fabric samples, protruding the fabric samples through openings, and monitoring response of said fabric samples to...
03/01/2005
6813960Asymmetrical column assembly for high-cycle fatigue test machines
A column assembly for use in conjunction with a test machine, for inducing high-cycle fatigue (at kilohertz vibration rates) in a specimen of a material under test. The column assembly has isolation masses, a specimen grip, and two actuators, the latter for impartin...
11/09/2004
6769315Shackle pin with internal signal conditioner
A weight measurement method and apparatus for measuring and monitoring the weight load on a vehicle such as a tractor trailer rig. A load pin and bearing assembly mechanically couples the weight of a trailer and its payload to the leaf springs of a tractor trailer t...
08/03/2004
6739200Method of stress testing footwear
A method of testing athletic shoes is provided. The testing subjects athletic shoes to different temperature conditions in one test or different kinetic forces in another test. After undergoing the stressor (temperature, kinetic forces, other) the axial resistance e...
05/25/2004
6718833Multiaxial high cycle fatigue test system
A multiaxial high cycle fatigue test system for testing bending, torsion, and tension of a test unit, comprises servo-hydraulic components, including a hydraulic service manifold, two small high frequency actuators along a first axis, and one large main actuator alo...
04/13/2004
6718269Apparatus, program product and method of estimating the stress intensity factor ratio of a material
An apparatus, program product, and method for estimating the stress intensity factor ratio (SIFR) of a material. The material is supported on a support and a load is applied to the material using a load member. A pair of strain components are measured using a strain...
04/06/2004
6679130Instrument for high throughput measurement of material physical properties of a plurality of samples
An apparatus and method for screening combinatorial libraries of materials by measuring the response of individual library members to mechanical perturbations is described. The apparatus generally includes a sample holder for containing the library member...
01/20/2004
6664067Instrument for high throughput measurement of material physical properties and method of using same
An apparatus and method for screening combinatorial libraries of materials by measuring the response of individual library members to mechanical perturbations is described. The apparatus generally includes a sample holder for containing the library member...
12/16/2003
6626047Crack testing arrangement which is especially used after the dye-penetration method or magnetic method
The invention relates to a crack testing system using the dye penetration method or for magnetic crack testing, having an illumination unit, a device for applying testing material and an evaluation station, which has light-emitting diodes (LEDs) as illumi...
09/30/2003
6601456Fretting fixture for high-cycle fatigue test machines
A fretting fixture accessory for a_test machine (10) that induces high-cycle fatigue (at kilohertz vibration rates) in a specimen of a material under test. The fretting fixture (20) is clamped to the test specimen (21), for the purpose of testing for fret...
08/05/2003
6453750Stress testing apparatus
A stress testing apparatus includes a cylinder block 2 with twelve cylinders 4, each housing a piston 14. Hydraulic pressure is provided to each of the cylinders 4 by a common supply bore 6 for urging each piston 14 out of its respective cylinder 4. A str...
09/24/2002
6446510Force transducer assembly
A force transducer assembly for measuring compressive and tensile loads applied to a force transmission device, the assembly includes a housing, a sleeve assembly and a sensor device. The housing has a hollow interior. The sleeve assembly is coupled withi...
09/10/2002
6299104Method and apparatus for evaluating parachutes under load
A system and method for evaluating flexible structures such as textiles under load generally. A specific embodiment is shown for parachutes. A plurality of first sensors and second sensors are attached to the parachute on its canopy and suspension lines. ...
10/09/2001
6240784Stress evaluation method and apparatus therefor
A stress evaluation method for evaluating stress acting on a test piece includes the steps of transmitting acoustic waves including a surface wave, a longitudinal wave, and a shear wave through the test piece; receiving the acoustic waves after they have ...
06/05/2001
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