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| Number | Title | Issue Date |
| 7451660 | Post calibration catalytic converter canning apparatus and method A method and apparatus for assembling an exhaust treatment device such as a catalytic converter employs post calibration to achieve a desired bulk gap density of a support mat surrounding a substrate in the device housing. The mat is gauged under pressure to a thick... | 11/18/2008 |
| 7441467 | Compression strain sensor A sensor is disclosed for sensing an applied load. The sensor includes a rigid substrate. A strain sensitive resistor is mounted to the substrate. The resistor has a pair of ends. The resistor has a length and a width that defines an area. A pair of conductors are c... | 10/28/2008 |
| 7377182 | Modular implant assembly tool This invention provides for a tool that produces, and directly and accurately measures, an axial force used to assemble two members of a modular implant, specifically, a modular hip implant. ... | 05/27/2008 |
| 7370538 | Method and apparatus for determining insulation thickness A method for determining the thickness of a layer of insulation comprises the steps of: contacting a top surface of a portion of the layer of insulation, compressing the portion of the layer of insulation until a predetermined compressive load is achieved, measuring... | 05/13/2008 |
| 7360444 | Interaction device for a mold for a gyratory compactor A gyratory compactor apparatus is provided for interacting with a sample within a generally cylindrical mold having a flange. Such an apparatus comprises a frame defining an axis and an offsetable member engaged with the frame for engaging one end of the mold. The o... | 04/22/2008 |
| 7334489 | Dual rate force transducer A dual rate force transducer is disclosed. A spring is machined to have a first spring portion with a first spring rate, a second spring portion with a second spring rate, and a platen between the spring portions. A pair of flanges are affixed to the distal ends of ... | 02/26/2008 |
| 7331102 | Apparatus for detecting an amount of strain and method for manufacturing same An apparatus for detecting an amount of strain comprises a strain generating part, an electrical insulating layer and sensing elements. The strain generating part is a member to which strain is to be applied. The electrical insulating layer is formed on the strain g... | 02/19/2008 |
| 7284447 | Apparatus and method for testing weld integrity An apparatus and method for testing weld integrity is disclosed which is portable, self-contained, adaptable for field use in most locations, and can verify the integrity of attachment welds. The testing apparatus includes a cylinder or cylinders, attachable to the ... | 10/23/2007 |
| 7246528 | Toner evaluation method, toner cartridge, and image forming apparatus A toner evaluation method that enables accurate evaluation of fixation performance of toner such as low temperature fixability and offset resistance, and a toner cartridge and an image forming apparatus adopting the toner positively evaluated by the evaluation metho... | 07/24/2007 |
| 7191664 | Testing 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 |
| 7143653 | Enhanced triaxial tester with volume change device for measurement of flow properties of dry cohesive particulate systems under low confining pressures Disclosed is a triaxial system for testing particulate matter under substantially dry triaxial load conditions comprising: a housing means fillable with confining fluid for providing confining pressure on a sample of dry particulate matter to be tested, the housing ... | 12/05/2006 |
| 7051600 | Triaxial tension compression, shear testing apparatus A triaxial testing system of material properties having top and bottom joint assemblies that rotate about and move along a longitudinal axis in response to forces imparted by a testing machine. The joint assemblies are connected together by horizontal and vertical l... | 05/30/2006 |
| 7047820 | Apparatus and method for testing material performance There is provided an apparatus (LCPA) for measuring a load applied to a quantity of material. The LCPA includes a load cell assembly sandwiched between an inner plate and an outer plate. The load cell assembly measures the load applied to the quantity of material wh... | 05/23/2006 |
| 7013709 | High throughput preparation and analysis of plastically shaped material samples A rapid throughput method for the preparation, analysis or both of libraries of material samples is provided. According to the method, a plurality of samples is provided. The plurality of samples is then formed into a plurality of films. Thereafter, the plurality of... | 03/21/2006 |
| 6966230 | Dynamometric tool A dynamometric tool uses a four-mandrel press. The press head is provided with a specific press geometry which is predefined by the mandrels. The dynamometric tool produces a tool which can determine the actual force of compression in an easy-to-handle manner. The d... | 11/22/2005 |
| 6964202 | Detection of rolling contact fatigue The onset of rolling contact fatigue in an object may be detected by measuring the residual stresses in the surface of the object, and monitoring changes in their magnitude or their direction. The values of residual stresses in the surface are those averaged over a ... | 11/15/2005 |
| 6871549 | Modular implant assembly tool This invention provides for a tool that produces, and directly and accurately measures, an axial force used to assemble two members of a modular implant, specifically, a modular hip implant. ... | 03/29/2005 |
| 6860148 | High 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 |
| 6860156 | Combined in-plane shear and multi-axial tension or compression testing apparatus An in-plane shear and multi-axial tension or compression testing apparatus having four-bar linkages pivotable to two sleeves on an opposite vertices with the sleeves of each vertex rotationally attached to each other. Lateral links of each linkage are pivotally atta... | 03/01/2005 |
| 6776048 | Tribological test apparatus A tribological test apparatus has a supporting structure, to which are fitted a central shaft rotating about a respective axis, and three peripheral shafts rotating about respective axes equally spaced angularly about the axis of the central shaft; the central shaft... | 08/17/2004 |
| 6772642 | High throughput mechanical property and bulge testing of materials libraries A method for high throughput mechanical property and bulge testing of materials libraries. A plurality of samples on a substrate are monitored for their response to a force from a fluid. ... | 08/10/2004 |
| 6718832 | Method and apparatus for measuring physical properties of matter The invention provides a method and apparatus for determining a relationship between hydrostatic stress and volumetric strain in a sample of compressible material, where the sample is immersed in a fluid medium having a density. The method includes steps of varying ... | 04/13/2004 |
| 6679130 | Instrument 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 |
| 6578431 | Method and apparatus for determining bulk material properties of elastomeric materials A method and apparatus for determining bulk material constants such as Poisson's ratio and the ratio of shear modulus to bulk modulus for elastomeric materials, including, but not limited to elastomers, rubbers, gels and sealants is disclosed. The bulk ma... | 06/17/2003 |
| 6363776 | Pile testing reaction anchor apparatus and method A novel apparatus and method are disclosed for testing piles for load bearing capacity. The novel means and method of the present invention include applying a static compressive force on a pile or group of piles to be tested for load bearing capacity, rec... | 04/02/2002 |
| 6145385 | Measurement of mechanical fastener clamping force A construction and a method for measuring the clamping force exerted by a fastener securing together two bodies. The construction includes a piece of material the same as that of a first of the bodies and a stack of at least two pieces of the same materia... | 11/14/2000 |
| 5905205 | Biaxial testing apparatus A new apparatus and method for applying a biaxial load to a flat plate test specimen is disclosed. A rhombus-shaped four-bar linkage is attached at one vertex to a fixed attachment point and a uniaxial tensile force is applied to the opposite vertex. The ... | 05/18/1999 |
| 5889397 | Automatic HTS force measurement instrument A device for measuring the levitation force of a high temperature superconductor sample with respect to a reference magnet includes a receptacle for holding several high temperature superconductor samples each cooled to superconducting temperature. A rota... | 03/30/1999 |
| 5814734 | Microballoon impregnated fiber reinforced RTV film compression stress A thin film stress sensor measures the maximum compressive stress between two elements that are compressed together. The sensor is formed from a thin RTV film impregnated with microballoons and reinforced with carbon fibers to restrain the lateral deforma... | 09/29/1998 |
| 5808207 | Microballoon impregnated fiber reinforced RTV film compression stress sensor testing method A thin film stress sensor measures the maximum compressive stress between two elements that are compressed together. The sensor is formed from a thin RTV film impregnated with microballoons and reinforced with carbon fibers to restrain the lateral deforma... | 09/15/1998 |
| 5753822 | Method and device for determining the green tack of rubber blends A method and device for determining the green tack of rubber blends. To obtain reliable and reproducible measurement results it is proposed to use two specimens (40') of rubber blends, the green tack of which is to be determined. Each of the specimens (40... | 05/19/1998 |
| 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 |
| 5699273 | Method and apparatus for determining the force-displacement diagram of the pairs of punches of a rotary pelleting machine An apparatus and method for determining the force-displacement diagram of pairs of punches in a rotary pelleting machine involving measuring and storing the course of compression of punch pairs for each individual angle step, storing said data and prepari... | 12/16/1997 |
| 5668325 | Method and apparatus for determining compressive stress in pillars Apparatus for determining compressive stress in an in-situ roof support pillar may comprise a convergence meter positioned in one of the two entries for measuring the total entry convergence, i.e., roof sag and floor heave, and for generating an output si... | 09/16/1997 |
| 5624474 | Optical fiber preform manufacturing apparatus which measures a vertical load with three cells An optical fiber preform manufacturing apparatus which continuously monitors the weight of a preform during manufacturing by a load cell without increasing the offset amount of the preform. The preform manufacturing apparatus includes a rotary chuck unit ... | 04/29/1997 |
| 5569857 | Vehicle stress detecting and measuring method and stress detecting device using said method The present invention is intended to provide a stress detecting and measuring method wherein in order to measure a shearing strain alone associated with a stress acting in an intended direction, the stress being one of the stresses acting on an axle of a ... | 10/29/1996 |
| 5448918 | Biaxial compression testing device A biaxial compression testing device formed by two modified beams joined ether to form an X-shape with the support structure, such as webs and upper flanges, removed in the region of the X intersection, thereby leaving a rectangular opening. The rectangu... | 09/12/1995 |
| 5024103 | Surface instability detection apparatus A compression test apparatus for geomaterial, such as rock or concrete, samples that is designed to provide measurements of a stress displacement characteristics of the failure zone. A geomaterial formed into a specimen comprising a right rectangular pris... | 06/18/1991 |
| 4885941 | Bi-axial geomaterial test system A bi-axial compression test apparatus for geomaterial (soil, etc.) samples that is designed to allow free shear band formation and provide measurements of the stress displacement characteristics of the failure zone. A geomaterial sample formed into a spec... | 12/12/1989 |
| 4825700 | Bi-axial geomaterial test system A bi-axial compression test apparatus for geomaterial (soil, etc.) samples that is designed to allow free shear band formation and provide measurements of the stress displacement characteristics of the failure zone. A geomaterial sample formed into a spec... | 05/02/1989 |
