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| Number | Title | Issue Date |
| 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 |
| 7204152 | Apparatus 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 |
| 7204153 | Apparatus 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 |
| 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 |
| 7121149 | Gyratory compactor apparatus and associated devices and methods 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... | 10/17/2006 |
| 7077602 | Method and system for containment, such as a containment cap for solid waste constructed of modified asphalt The present invention is directed to a waste or environmental containment system that includes modified asphalt specifically designed for containment, and a system of installation that provides a seamless cap over the area to be contained. The modified asphalt of th... | 07/18/2006 |
| 6976396 | Loading device for non-destructive inspections of composite structures There is provided a loading device for applying a load to a composite structure during a non-destructive inspection. The loading device comprises a load indicator to indicate the load applied, which is preferably a normal load, and comprises a connector attached to ... | 12/20/2005 |
| 6925889 | Devices and methods for applying known resistance loads and measuring internal angles of gyration in gyratory compactors Devices and methods for providing a known resistance load and measuring an internal gyration angle of a mold in a gyratory compactor. A device in one form has a cylindrical body with protrusions through which a known resistance force is applied by the gyratory compa... | 08/09/2005 |
| 6901810 | Method of cyclic testing A part that is subject to at least a cyclic thermal stimulus is numerically simulated to determine extremum states of stress therein that would be suitable for an associated life cycle test. The assembly of the part in a fixture is then numerically simulated to dete... | 06/07/2005 |
| 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 |
| 6729190 | Ceramic honeycomb strength testing apparatus Methods and apparatus for testing the strength of ceramic honeycomb structures are described. The apparatus includes a chamber that utilizes a flexible, generally cylindrical member including integral flanges to apply compressive force to the periphery of the honeyc... | 05/04/2004 |
| 6729189 | Method 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 |
| 6526836 | Bituminous pavement fatigue testing device A method and apparatus for analyzing bituminous concrete mixes to predict the likelihood of early rutting is disclosed. A test head designed to be used in a gyratory compactor uses the compaction provided by the gyratory compactor to analyze bituminous mi... | 03/04/2003 |
| 6508896 | Method and apparatus for calibrating and optimizing equipment for product fabrication By measuring the pressure distribution between fabricating equipment and a product formed in that equipment, and optionally the sequence in which the pressure is applied, the quality of product formation may be optimized. In an illustrated embodiment, pre... | 01/21/2003 |
| 6446510 | Force 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 |
| 6205864 | Gyratory shear press This invention relates to a gyratory shear press of which the compression means are disposed in the lower part of the chassis and of which the gyration means are provided in the upper part of the chassis which is in the form of a casing. The mould is intr... | 03/27/2001 |
| 6171812 | Combined perfusion and mechanical loading system for explanted bone The system provides frame means, mechanical loading means, electronic control means and perfusion chamber means in which an accurately cut human or animal trabecular bone sample can be maintained in a viable state for an extended period. A chamber is prov... | 01/09/2001 |
| 5969261 | Apparatus and method for measuring rutting susceptibility An apparatus and method for testing rutting susceptibility of test specimens. The apparatus includes a specimen holder having cavities for receiving one or more test specimens having an exposed surface for testing. A load bearing surface is positioned abo... | 10/19/1999 |
| 5939642 | Gyratory compactor An apparatus for compacting a material sample, such as paving material, including a cylindrical compaction mold and a mold support arranged to support one end of the mold. The mold support includes a turntable mounted for rotation about a rotational axis ... | 08/17/1999 |
| 5594178 | Strength evaluation method for brittle material pieces A strength evaluation method for evaluating the strength of brittle material pieces by applying momentary loading a plurality of times, the momentary loading momentarily applying a tensile stress to a brittle material piece; and gradually decreasing the p... | 01/14/1997 |
| 5365793 | Equipment and method for environmental testing of bituminous specimens A testing system for determining the water sensitivity of a compacted asphalt concrete specimen under various conditions isolates the specimen on a test stand in an environmental cabinet by an impervious shroud and end platens connected to an external flu... | 11/22/1994 |
| 4869111 | Cyclic fatigue testing apparatus A cyclic fatigue testing apparatus intended for testing the cyclic fatigue of samples such as ceramic or the like, in which it comprises a vibration plate assembly comprising a flex plate provided with piezoelectric element layer(s) on at least one surfac... | 09/26/1989 |
| 4837776 | Process for measuring the variations in volume of fluids, especially shrinkage measurements in synthetic resins during hardening and a device for carrying out the process In a process for measuring the variations in volume, especially shrinkage measurements in duroplastics during the hardening, the material to be measured is acted upon by such a pressure that a fully homogeneous test piece is obtained without any fractures... | 06/06/1989 |
| 4096742 | Flexing device for testing resilient articles and method of compression testing A method of compression testing resilient articles comprising the steps of cutting a sample to desired predetermined dimensions, placing the sample in a preflexing machine to provide preflexing at test specifications, and testing the preflexed sample in a... | 06/27/1978 |
| 4074569 | Apparatus for determining material processing characteristics An apparatus for testing the processing behavior of a visco-elastic material. A first ram is adapted to apply to a test sample a predetermined pre-test deformation. A second ram is adapted to subsequently apply to the test sample an additional test deform... | 02/21/1978 |
| 3998090 | Soil compactor A soil compactor for laboratory use to systematically and controllably coct specimens of soil and earth-rock mixture materials. The raising of a drop hammer after each strike to a pre-selected height is accomplished automatically by the use of a pneumati... | 12/21/1976 |
| 3933032 | Dynamic rheometer The dynamic mechanical properties of polymeric materials can be measured either in uniaxial compression or in flexure as a function of frequency over a wide frequency as well as temperature range, by using a piezoelectric driver to apply a displacement to... | 01/20/1976 |
