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Class 73/841 - Shear


Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the loading is applied to a section
No. of patents: 78
Last issue date: 04/12/2011


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NumberTitleIssue Date
7921731Two-axis direct fluid shear stress sensor
A micro sized multi-axis semiconductor skin friction/wall shear stress induced by fluid flow. The sensor design includes a shear/strain transduction gimble connected to a force collecting plate located at the flow boundary surface. The shear force collecting plate i...
04/12/2011
7918142Sensor for measuring shear forces
The present invention is related to a sensor for simultaneously measuring both normal and shear forces applied to two or more flexible sensors, and further a statically responsive sensor for measuring shear forces. The present invention further includes a method of ...
04/05/2011
7752917Fatigue life estimating method for spot welded structure
A fatigue life estimating method for a spot welded structure is provided comprising the steps of providing a shell model of a spot welded structure for a finite element method analyzing process, calculating the nominal structural stress on a nugget as the center of ...
07/13/2010
7669482System and method for testing tubular well products
A technique enables testing of a wellbore tubular under simulated well conditions. The wellbore tubular is mounted in a fixture for testing. Controllable systems are used to subject the wellbore tubular to a variety of predetermined conditions simulating potential d...
03/02/2010
7650795Test cell for applying a shear stress to a test specimen
A test cell and method for stress testing a test specimen including a first platen and a second platen. Each platen having a loading surface, an inclined surface, and a longitudinal axis. The inclined surface being inclined relative to the longitudinal axis at an an...
01/26/2010
7581452System and method for soil strength measurement
A system and method for characterizing soil shear strength from a vehicle, comprises a plurality of sensors mounted on a vehicle and configured to measure distances from the sensors to the soil surface. The sensors comprise a first sensor disposed on the vehicle and...
09/01/2009
7574922Test apparatus to determine the shear strength of a composite sandwich beam under a high hydrostatic load
An apparatus for determining the strength of composite sandwich beam in which an enclosure and insertable bladder is provided. The apparatus comprises positioning a bladder within the enclosure. The beam to be tested is slid through a cutout or aperture of the enclo...
08/18/2009
7555961Test apparatus
A device (10) for shear testing of very small protrusions of an electrical semi-conductor device includes a sensor (30) for detecting surface contact of a shear test tool (15). The lateral shear force transducer is also used to detect scrubbing ...
07/07/2009
7448279Device for testing material properties with regard to combined tensile and shear loads, in particular for testing adhesives
A device for testing material properties with regard to combined tensile and shear loads, in particular for testing adhesives, includes a device for applying the force, a measuring device, a test piece receptacle, and a test piece having a bonding surface. The test ...
11/11/2008
7426871Apparatus for testing a fuselage structure having a longitudinal and circumferential curvature
The apparatus for testing of a fuselage structure having longitudinal and circumferential curvature includes an assembly for applying forces to the fuselage structure. It includes a central shaft that extends in the longitudinal direction at the center of the fusela...
09/23/2008
7421906Apparatus for testing a fuselage structure having a longitudinal and circumferential curvature
The apparatus for testing a fuselage structure having longitudinal and circumferential curvature includes an assembly for applying forces to the fuselage structure. It includes a support capable of supporting the fuselage structure and the assembly for applying forc...
09/09/2008
7418876Oscillatory motion based measurement method and sensor for measuring wall shear stress due to fluid flow
A shear stress sensor for measuring fluid wall shear stress on a test surface is provided. The wall shear stress sensor is comprised of an active sensing surface and a sensor body. An elastic mechanism mounted between the active sensing surface and the sensor body a...
09/02/2008
7392708Apparatus and method of measuring shear strain of thick adhesive bondlines
A method an apparatus for testing shear strain response of a test specimen having a thick adhesive bond line is disclosed. Method and apparatus permit the use of readily available clip-on extensometers. The apparatus and method may include the use of knife edges sec...
07/01/2008
7389698Nutplate bond strength tester unit
A bond strength tester unit is provided for testing adhesive bond strength of a nutplate or the like attached to a substrate, such as by adhesive bonded attachment to a blind side of the substrate in substantial alignment with a substrate opening. The nutplate may b...
06/24/2008
7387032Methods and apparatus for measuring the viscoelastic response of vocal fold tissues and scaffolds across a frequency range
In one aspect the present invention concerns methods and apparatus for measuring the mechanical properties of soft materials across a frequency regime. In particular, the present invention concerns methods and apparatus using torsional waves to measure the mechanica...
06/17/2008
7367237MEMS vascular sensor
A micromachined sensor for measuring vascular parameters, such as fluid shear stress, includes a substrate having a front-side surface, and a backside surface opposite the front-side surface. The sensor includes a diaphragm overlying a cavity etched within the subst...
05/06/2008
7343813Multicapacitor sensor array
A new capacitive sensor array comprises a first plurality of conductors separated by a compressible insulator from a second plurality of conductors lying in a second plane parallel to the first plane. The second plurality of conductors are paired to partially overla...
03/18/2008
7308831Interface device and method for interfacing instruments to vascular access simulation systems
An interface device and method for interfacing instruments to a vascular access simulation system serve to interface peripherals in the form of mock or actual medical instruments to the simulation system to enable simulation of medical procedures. The interface devi...
12/18/2007
7258023Process for measuring the transfer resistance of a cosmetic product
Disclosed herein is a process for measuring the transfer resistance of a cosmetic product, such as a foundation, comprising: i) depositing an amount of the cosmetic product onto a first face of a support; ii) applying the first face of the support onto a sheet, unde...
08/21/2007
7240563Method for verifying concrete flexural strength
The present invention relates to a method for verifying concrete flexural strength by establishing a predictive correlation between concrete flexural strength and a second strength parameter, such as direct tension or indirect tension, measuring the value of that se...
07/10/2007
7201063Normal force gradient/shear force sensors and method of measuring internal biological tissue stress
A normal force gradient/shear force sensor device and measurement method for measuring internal stresses in tissues of a person supported by a chair or bed includes a planar matrix array of peripheral normal force sensors radially spaced from central shear force sen...
04/10/2007
7191664Testing of mechanical properties of materials
Apparatus is disclosed for testing the mechanical properties of a material. The apparatus comprises a sample container (10) adapted to be filled with a sample of the material, and a housing (20) within which the sample container (10) is, in use,...
03/20/2007
7168311Fiber optic monitoring of flow inside and outside a tube downhole
An apparatus and method for monitoring and characterizing the fluid flow in and around the tubing string in a wellbore, preferably using fiber optic componentry. The apparatus includes a signal sensing demodulator device and a skin friction sensing device positionab...
01/30/2007
7155982Testing apparatus for compression and shear testing of a test component such as a curved aircraft component
A testing apparatus receives a test component between a force introduction table and a pressure plate, which apply a compressive load to the component therebetween. First and second shear beams are secured to opposite vertical edges of the component to respectively ...
01/02/2007
7155981Strain sensor with fixing members
A strain sensor improved in detection accuracy without variation of bending stresses applied to the strain detecting element. The sensor substrate has a first fixing hole at one end and a second fixing hole at the other end, a detecting hole at the center, and at le...
01/02/2007
7127950Method for determining a surface contact force
A method of measuring a load on a surface produced by a contact force. An elastic film or coating is located on a supporting surface to provide an indication of normal and tangential or shear forces applied to the surface. A thickness measurement, corresponding to a...
10/31/2006
7077011Apparatus and method for measuring stress at an interface
An apparatus for measuring stress is provided that includes a stress sensor including, in part, a sensing device configured for generating and outputting sensor measurement signals representative of a stress or a component of a stress. In one embodiment, the stress ...
07/18/2006
7013737Removable twisting measuring device for various hand tools
A removable twisting measuring device for various hand tools comprises a cover removably installed on a rod body of a hand tool; a strain gauge installed at one end of the cover contacting the rod body of the hand tool; the strain gauge having a deformation due to a...
03/21/2006
6955094Sensor for measuring shear forces
The present invention is related to a sensor for simultaneously measuring both normal and shear forces applied to two or more flexible sensors, and further a statically responsive sensor for measuring shear forces. The present invention further includes a method of ...
10/18/2005
6936471Instrument 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 members, an array...
08/30/2005
6884947Apparatus and method for the checking of forces
An apparatus and a method for measuring the force (GL) applied by an elastically flexible element (5;71,71′) undergoing a pre-set elastic deformation, more specifically an element that carries a slider (3) and includes a thrust device that applies a ...
04/26/2005
6877385Contact type micro piezoresistive shear-stress sensor
There is disclosed a semiconductor sensor for measuring the contact shear stress distribution between the socket of an above-knee (AK) prostheses and the soft tissue of an amputee's stump. The sensor is fabricated by the micro-electro-mechanical system (MEMS) techno...
04/12/2005
6776049System and method for measuring stress at an interface
A stress sensor is provided that is suited for measurement of stress between adjacent mated bodies, such as at an interface. The stress sensor permits measurement of stress, preferably a shear component of the stress substantially exclusive of the normal component. ...
08/17/2004
6736015Robust, wireless microelectro mechanical system (MEMS) shear force sensor
Micro electromechanical components in a novel configuration to allow wireless normal direction pressure transducers to be used for oblique or shear forces. The invention includes a novel cantilever beam configuration and algorithm, the readings of the MEMS sensors a...
05/18/2004
6729189Method and apparatus for measuring packing properties
Subject of the invention is a method to measure the compaction properties of soil and other similar masses. A mass specimen is placed in a cylinder. The mass specimen is then pressed with standard pressure between an upper platen and a lower platen, and the height o...
05/04/2004
6662630Method for measuring slide bearing pressure in a deflection-compensated roll with a fixed shell
A deflection compensated roll has a stationary support structure and a shell rotatably arranged around it by means of slide bearings. The shell is additionally supported on the support structure with hydraulic loading devices by which the axial profile of...
12/16/2003
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
6644101Rheometer for rapidly measuring small quantity samples
The present invention relates to a miniature rheometer, a parallel rheometer, and improved force sensor elements which may advantageously be used in combination with the miniature rheometer and the parallel rheometer. The miniature rheometer is adapted to...
11/11/2003
6598486Portable device for testing the shear response of a material in response to a repetitive applied force
A portable device for measuring the shear properties of a material specimen under applied dynamic circumferential forces against the specimen perpendicular to a longitudinal axis of said specimen. The device may further apply a dynamic force against an en...
07/29/2003
6453752Fixture for testing shear strength in tailor welded blanks
A fixture is provided for testing the shear strength of a longitudinal weld which interconnects a plurality of planar blanks forming a tailor welded blank. The fixture includes a first pair of triangular shaped face plates connected to one side of the tai...
09/24/2002
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