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Class 73/795 - Strain


Subclass of Class 73 - Measuring and testing
Definition: Subject matter where the deformation of a specimen is measured.
No. of patents: 53
Last issue date: 05/03/2011


1    
NumberTitleIssue Date
7934430Die scale strain gauge
A chip with resistive, metallic strain gauges distributed on surfaces on and buried within the chip. Also, vertically arranged vias and vertical thin film resistive strain gauges are described. The resistive strain gauges can be multiplexed wherein strain can be mea...
05/03/2011
7661320Deformation sensor bearing comprising at least three strain gauges
The invention relates to a bearing comprising at least one system for determining the amplitude A of the pseudo-sinusoidal deformations of an area of the fixed race that are induced during rotation, the said system comprising at least three strain gauges (7),...
02/16/2010
7520177Collar for measuring the lateral deformation of a test piece during compression test, such as uniaxial or triaxial compression tests
The invention relates to a collar for measuring lateral deformation of a test piece during uniaxial or triaxial compression tests. According to the invention, the collar includes a metal hoop or a hoop that is made from composite materials, which can clasp the test ...
04/21/2009
7500400Displaceable piece of furniture
A movable furniture part has at least one force sensor to measure the forces acting on the outer panel of the movable furniture part. The movable furniture part has an inner panel, behind an outer panel when viewed from the front and spaced at a distance therefrom. ...
03/10/2009
7464605Bed having a patient position monitoring system
A patient sensor configured to detect the presence of a patient on a patient support surface. ...
12/16/2008
7395722Mechanical property measurement of thin films by micro plane-strain compression
This invention is directed to the measurement of stress-strain relationships in thin films using substantially flat, parallel test surfaces with minimal width. This invention is further directed to the measurement of stress-strain relationships in thin films at cont...
07/08/2008
7363822Technique for applying direct resistance heating current to a specific location in a specimen under test while substantially reducing thermal gradients in the specimen gauge length
A technique for imparting direct resistance heating to a gauge length of a conductive metallic specimen under test and which can be used to add an independent dynamic thermal capability to a mechanical material test system. Specifically, a pair of, e.g., conductive ...
04/29/2008
7357037Strain sensing system
The present invention provides a system 10 for measuring and remotely monitoring strain in an element 1 having a strain sensor 20, a telemetry circuit 40 for transmitting strain data to a remote location, and a reader module 60 for...
04/15/2008
7342185Compression column load cell with compensation for off center loading errors
Simple and inexpensive electrical compensation for off-axis and off-center loading sensitivity is possible in compression column load cells having a pair of compensation strain gages in series with each of the main strain gages in the load cell. The compensation gag...
03/11/2008
RE39838Bearing assembly with sensors for monitoring loads
A bearing assembly which couples a road wheel to a suspension system component on an automotive vehicle includes a hub to which the wheel is attached and a housing which is attached to the suspension system component. The housing has two tapered raceways which surro...
09/18/2007
7265174Halogen containing-polymer nanocomposite compositions, methods, and products employing such compositions
The disclosure provides compositions prepared by combining nanomaterials with a halide-containing polymer, thereby forming a combined polymer matrix having dispersed nanomaterials within the matrix. The nanomaterials may be carbon-based nanotubes, in some applicatio...
09/04/2007
7263901Method and device for determining the direction of displacement of a roller bearing component
A measuring arrangement in a roller bearing, which determines the direction of displacement of a displaceable bearing component in relation to a stationary bearing component. Four pressure-dependent resistors (R1, R2, R3, R4) of a bridge ...
09/04/2007
7240570Load-sensing bearing
A load sensing bearing assembly comprises a bearing outer race secured to an application structure by a flange assembly incorporating a plurality of anisotropic spring regions which enable a limited range of displacement and/or rotation of the bearing outer race rel...
07/10/2007
7210358Force sensor assembly
A force sensor assembly includes a force sensor, a first support member, a threaded portion, an opening made in the first support member, a nut, a restricting member and a spacer. The nut is screwed onto the threaded portion which is inserted through the opening. Th...
05/01/2007
7194912Carbon nanotube-based sensor and method for continually sensing changes in a structure
A sensor has a plurality of carbon nanotube (CNT)-based conductors operatively positioned on a substrate. The conductors are arranged side-by-side, such as in a substantially parallel relationship to one another. At least one pair of spaced-apart electrodes is coupl...
03/27/2007
7186460Extension and upsetting sensor
The invention relates to core-shell particles comprising a shell which forms a matrix, and a core which is essentially solid and has an essentially monodisperse size distribution, the refractive index of the core material being different from that of the shell mater...
03/06/2007
7137306Apparatus for providing enhanced self-resistive specimen heating in dynamic material testing systems and accompanying method for use therein
Apparatus and an accompanying method for use in a conventional dynamic material testing system to advantageously provide enhanced self-resistive specimen heating. Specifically, a fixture (400) is added to the system. The fixture has two supporting arms (20...
11/21/2006
7128181Seat console for a vehicle seat
In a seat console, weight sensors for measuring the weight of occupants are arranged, which are provided between a top frame and a bottom frame of the console. So that a floating bearing of the top frame in the bottom frame is ensured, the top frame and the bottom f...
10/31/2006
7117756Load detecting vehicle seat assembly
A load detecting vehicle seat assembly includes a discrete strain gage mounting plate having a specified flatness to produce desired strain gage performance. The strain gage mounting plate is disposed between a strain gage and a vehicle seat component, such as a cus...
10/10/2006
7107857Apparatus for an anvil system that provides enhanced self-resistive specimen heating when used in a dynamic thermo-mechanical material testing system
Apparatus for use in a conventional dynamic material testing system to advantageously provide uniform self-resistive specimen heating with enhanced temperature uniformity. Specifically, an anvil stack (300) in an anvil assembly (200) has a foil interfa...
09/19/2006
7096745Seat-load measuring apparatus
A seat load measuring apparatus that includes a seat rail between a seat-load measuring apparatus and a vehicle floor. The apparatus includes a base frame and a base bracket that provide a load support mechanism to support a load heavier than a predetermined load im...
08/29/2006
7094061Printed circuit board with integral strain gage
An integral strain measurement layer for use in an assembly printed circuit board to provide for strain measurement on the printed circuit board. The strain measurement layer includes an insulating layer having a top surface and a bottom surface, a strain sensitive ...
08/22/2006
7086293Method for monitoring a machine and such a machine, particularly a robot
In order to improve the monitoring of a machine with movable parts, such as in particular an industrial robot, and for increasing safety, the invention provides a method for monitoring movable parts of a machine, such as an industrial robot, in which at least two di...
08/08/2006
6997060Load-detecting device
A load-detecting device includes a supporting member, a load transfer member, a load sensor, and a load sensor supporting member. The load transfer member is supported by the supporting member and includes an elastic displacement area in which an elastic displacemen...
02/14/2006
6957591Passenger judging apparatus with load sensor
In a passenger judging apparatus with a load sensor excellent in practical use and capable of achieving not only the reduction of judgment delay in the case of the necessity for a quick judgment but also the improvement of the judgment accuracy in the other cases, a...
10/25/2005
6955096Monitoring the axial load acting on the hub of a motor vehicle wheel
In a hub-bearing assembly for the wheel of a motor vehicle, the hub (1) forms integrally or is fixedly secured to a radial flange (7) fixable to a wheel (8). Associated with the assembly is a measuring device (14) mounted to a non-rotatin...
10/18/2005
6948377Method and apparatus for detecting the strain levels imposed on a circuit board
A device for detecting strain levels imposed on a circuit board includes an apparatus mounted on the circuit board, an amplifier for detecting a change in the impedance of the apparatus and generating an output signal representing the change in the impedance of the ...
09/27/2005
6943695Seat load measuring apparatus
A vehicle seat load measuring apparatus includes a base for bearing a load applied to the seat, an arm supported by the base for receiving the load, a load sensor supported by the arm for detecting the load, and a seat rail for guiding the seat in a longitudinal dir...
09/13/2005
6748810Load sensor
A deflection sensing assembly comprises a square plate with attachment holes in each of the four corners for attachment to a structural element along which deflection is to be measured. The sensor is attached to the structural element such that only two opposed corn...
06/15/2004
6695379Structure for load detection element in vehicle seat
Structure for securing a load detection element under a vehicle seat in combination with a support leg element having a hole formed in one end portion thereof, wherein the load detection element is pivotally connected with the support leg element, while b...
02/24/2004
6658943Bearing assembly with sensors for monitoring loads
A bearing assembly which couples a road wheel to a suspension system component on an automotive vehicle includes a hub to which the wheel is attached and a housing which is attached to the suspension system component. The housing has two tapered raceways ...
12/09/2003
6655219Load cell and roll-over alarming device for a crane
To detect a low load of an outrigger with high accuracy and improve alarming accuracy of a roll-over alarming device, the roll-over alarming device for a crane includes a load cell 1 having a coil spring 5 provided with a strain gauge 4, and an upper load...
12/02/2003
6622558Method and sensor for detecting strain using shape memory alloys
A method and sensor for detecting strain using shape memory alloys is disclosed. The sensor comprises a substrate material, a flexible diaphragm provided on the substrate material and a thin film SMA material deposited on the flexible diaphragm. The thin ...
09/23/2003
6572490FRP golf club shaft
A golf club has a shaft made of fiber reinforced plastics. The shaft has braided layers with substantially symmetrical diagonal yarns which are positioned at orientation angles +θ, -θ from more than 0° to +10° and from less than -0° to -10° res...
06/03/2003
6532805Micro-material testing apparatus
An atomic force microscope including a cantilever, a transferring device and a displacement detecting device is used for conducting a material test of a test member based on a load amount and a displacement amount. The test member may be fixed to the cant...
03/18/2003
6520023Load detection structure for vehicle seat
A load detection structure in a vehicle seat with a support leg member, which includes a block member of rigid yet resilient recovery property and a strain gauge attached thereon. The block member is interposed between the seat and support leg member, suc...
02/18/2003
6470759Load cell with reduced sensitivity to thermal shock
A load cell has internal cuts or grooves allowing increased the measurable strain on a load cell package increasing its ability to accurately measure lower weights while reducing the load cell's sensitivity to thermal shock. These cuts or grooves are rect...
10/29/2002
6422090Apparatus for a thermodynamic material testing system that produces very large strains in crystalline metallic specimens and accompanying methods for use therein
Thermodynamic material testing apparatus and a method for use therein which are capable of controllably inducing very large strains in crystalline metallic specimens. The apparatus prevents longitudinal flow elongation, that otherwise results in conventio...
07/23/2002
6298733Beam accelerometer
An accelerometer includes a bottom leg, two side legs, a beam, two support strips, a mass, a loading column, and at least one resistor mounted on the beam. The two side legs extend upwardly from the bottom leg, and a lower end of each side leg is connecte...
10/09/2001
6276214Strain sensor functioned with conductive particle-polymer composites
When conductive particles are dispersed beyond the percolation threshold, electric conductive paths are formed between the electrode by chains of particles contacting with each other between the electrodes. Elongation of this composite results in an incre...
08/21/2001
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