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| Number | Title | Issue Date |
| 8008941 | Polishing head testing with movable pedestal A polishing head is tested in a test station having a pedestal for supporting a test wafer and a controllable pedestal actuator to move a pedestal central wafer support surface and a test wafer toward the polishing head. In another aspect of the present description,... | 08/30/2011 |
| 7946182 | Apparatus for measuring the strength of solar cells Disclosed is an apparatus for measuring the strength of solar cells. The apparatus includes a shell, a flexible element, a fastener unit, an inlet valve and a vent valve. The shell is used to cover the solar cells. The flexible element is disposed in the shell, thus... | 05/24/2011 |
| 7624646 | Systems and methods for evaluating material for pulling rolls Disclosed are systems and methods for evaluating the properties of material used in the manufacture of pulling rolls. In one embodiment, a method is provided for aligning plates comprising the material along an axis and compressing the plates to form a cartridge. Th... | 12/01/2009 |
| 7591188 | Stress and/or tension monitoring systems and methods There is disclosed a system comprising a structure, from 1 to 10 dynamic tension sensors, adapted to monitor a dynamic tension level of at least one point along a length of the structure, and a controller adapted to calculate a dynamic bending stress or strain level... | 09/22/2009 |
| 7428845 | Compression gauge A compression gauge for measuring the compression applied to a test bolt. The compression gauge includes a passive hydraulic cylinder and a piston slidably disposed within the cylinder. The piston and the cylinder define an hydraulic chamber. A threaded test bolt pa... | 09/30/2008 |
| 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 |
| 7347104 | Arrangement and method for the analysis of the strength of a specimen of reducible material that contains iron A method for the analysis of the strength of a test specimen of reducible material that contains iron during the use of an arrangement comprises: a) arranging a test specimen between adjacent contact surfaces of first and second devices of the arrangement; b) contin... | 03/25/2008 |
| 7347105 | Method for the analysis of a test specimen of reducible material that contains iron A method for the analysis of the properties of a test specimen comprises: arranging a test specimen between contact surfaces; continuously reducing the distance between the contact surfaces; measuring the diameter of the test specimen when the test specimen makes co... | 03/25/2008 |
| 7331244 | Stamping press line simulation device and method An apparatus and method for testing a stamping press die that has includes a plurality of mechanical devices. The apparatus includes a plurality of pneumatic connections for supplying pressurized air to each of the plurality of mechanical devices; a plurality of val... | 02/19/2008 |
| 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 |
| 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 |
| 7107858 | Hot mix asphalt load simulator A device for simulating the various forces a load of hot asphalt mix places on the inside of a gyratory compactor allows the calibration of the compactor without requiring actual asphalt to be used. Obviating the need for asphalt during calibration significantly inc... | 09/19/2006 |
| 7043998 | Ceramic inspection system A system for inspecting a ceramic component. The ceramic component is positioned on a first rotary table. The first rotary table rotates the ceramic component. Light is directed toward the first rotary table and the rotating ceramic component. A detector is located ... | 05/16/2006 |
| 7028556 | Load 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 |
| 7008156 | Load transfer apparatus A first load-receiving member having a cylinder and a screw hole through which a bolt is thread-engaged and a second load-receiving member having a piston and a fastening face that is made in contact with a member to be fastened are attached to a nut, and a number o... | 03/07/2006 |
| 6952969 | Ceramic ball bearing fracture test method A mechanical test method prescribes compressing brittle balls in spherical conforming opposing platens producing equatorial bulging, tensile stresses, and resulting indentation crack growth that is imaged for providing direct measurement of the fracture toughness of... | 10/11/2005 |
| 6889558 | Real-time display of internal gyration angle in gyratory compaction material testing A gyratory compacting apparatus and data capture and display system for compacting a specimen of material within a mold as the mold is gyrated, and capturing and displaying data on an internal angle of gyration during mold gyration, the apparatus and system having a... | 05/10/2005 |
| 6745635 | Proof load test gauge for swag bearing An improved device for proof load testing of bearings comprising of a cylinder body (8) and a piston (3) which are slidably mounted with a male and female internal coupling design, creating an cylindrical type cavity (9) within the body. The cav... | 06/08/2004 |
| 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 |
| 6612183 | Method for regulating the counterpressure in an apparatus for plasticising and quantitatively regulating plastic material A method of regulating the counterpressure in an apparatus for plasticising and quantitatively regulating plastic material by means of a screw which is driven by separate servo motors for the rotary movement and the axial movement, wherein the deviation o... | 09/02/2003 |
| 6539809 | Test apparatus for measuring stresses and strains A test apparatus is provided for measuring loads applied to an object and for measuring the deformation of the object in response to the loads. The test apparatus includes a stationary work head and a movable arm. The movable arm is selectively movable to... | 04/01/2003 |
| 5964445 | Load counterbalancing system with a constant load displacement force A load counterbalancing system with a constant load displacement force includes a load element, a position transducer and an actuator element. An environmental force acting upon the load element is counterbalanced by a support force provided by the actuat... | 10/12/1999 |
| 5832817 | Constant pressure paper press A paper sample press has a drawer slidably mounted on a base. A plurality of generally vertical guide posts are mounted on the base on opposed sides of the drawer. The drawer has a lower platen mounted thereon for supporting a stack of paper samples. The ... | 11/10/1998 |
| 5641912 | Method for remote application of variable load and/or displacement to specimens, components, or systems A method and apparatus for applying a force, displacement, or both to specimens, components, or systems by using a remote variable load/deflection device. The method enables testing of materials under actual in-service conditions. A displaceable container... | 06/24/1997 |
| 5490432 | Kit for operating upon bearings A first kit includes a manually operable hydraulic pump, a hose and a fitting for transferring the pressure in the pump to the hose. A second tool kit for bearings of relatively small size includes a fitting for coupling to the hose in the first kit and a... | 02/13/1996 |
| 5454260 | Non destructive adhesion testing Non destructive adhesion testing of coatings to substrates. A supersonic jet of water is impinged against the coating. The impingement intensity of the jet is set at a predetermined "failure intensity" determined by testing of a sample having a minimum ac... | 10/03/1995 |
| 5450756 | Device and method for measuring and adjusting pressing load values on a press A pressing load measuring device including a memory for storing a data map representative of a relationship between the output level of a strain sensor attached to a press frame and the actual pressing load value on the press, and a converter for converti... | 09/19/1995 |
| 5339693 | Apparatus and method for testing tubular products Apparatus and method for experimentally determining the compressive material strength of tubular products includes a housing having a cylindrical cavity therein, top and bottom end caps closing opposite ends of the cavity, tubular bladder means mounted in... | 08/23/1994 |
| 5287750 | Apparatus for inspecting mechanical strength of bottom portions of bottom-closed hollow pipes A bottom strength-inspecting apparatus for bottom-closed hollow pipes is disclosed. This apparatus includes an air chuck 2 for holding an outer peripheral surface of the bottom-closed hollow pipe W, and a pressing elements coaxially provided with the air ... | 02/22/1994 |
| 5197335 | Apparatus for inspecting mechanical strength of bottom portions of bottom-closed hollow pipes A bottom strength-inspecting apparatus for bottom-closed hollow pipes is disclosed. This apparatus includes an air chuck 2 for holding an outer peripheral surface of the bottom-closed hollow pipe W, and a pressing elements coaxially provided with the air ... | 03/30/1993 |
| 4856341 | Apparatus for analysis of failure of material Apparatus is provided for performing mechanical deformation studies of a sample of material to determine mechanical and petrophysical properties of such a sample. The apparatus is useful in conjunction with an imaging (NMR or CAT) apparatus.... | 08/15/1989 |
| 4845995 | Material tester A material tester which allows for material characterization under hydrodmic loading including very high rates of loading such as found in ballistic applications, and which includes various interchangeable fittings to allow the tester to simultaneously s... | 07/11/1989 |
| 4768372 | Test device, in particular for bottle-shaped containers as well as procedure for testing same The test device (7) serves in particular for testing bottle-shaped containers (4), and is in the form of a piston/cylinder assembly. It has two pistons (41, 53) in order to test simultaneously or consecutively two properties of the container (4), while th... | 09/06/1988 |
| 4762003 | Material test machine for tension-compression tests at high temperature Apparatus providing a device for testing the properties of material specimens at high temperatures and pressures in controlled water chemistries includes, inter alia, an autoclave housing the specimen which is being tested. The specimen is connected to a ... | 08/09/1988 |
| 4679441 | Pressure balanced loading piston for triaxial test cells A triaxial test cell and pressure balanced piston therefor that includes a housing containing a vessel wherein a test specimen is located, immerged in a confining fluid. The housing includes a passage wherein the piston is installed to slide so as to move... | 07/14/1987 |
| 4616508 | Method and apparatus for producing a test piece of molding compound useful in measuring properties thereof A specific measured volume of a molding compound is placed within a cavity having a certain geometry and a compacting pressure is applied thereto until a predetermined measured pressure is reached on a side of said molding compound opposite the side where... | 10/14/1986 |
| 4607532 | Apparatus for determining the behavior of powdered material under stress There is described an apparatus for determining the behaviour of powder of granular material under stress, comprising, at least one flexible boundary arranged to abut one face of a sample of the powder or granular material, means to apply stress to the sa... | 08/26/1986 |
| 4594900 | Axial load testing machine Disclosed is a testing machine for testing specimens such as lumber which may have varying overall lengths. The testing machine includes the frame having an elongated longitudinal member which can be pivotally mounted with respect to stands. Two sets of t... | 06/17/1986 |
| 4567774 | Determining mechanical behavior of solid materials using miniature specimens A Miniaturized Bend Test (MBT) capable of extracting and determining mechanical behavior information from specimens only so large as to have at least a volume or smallest dimension sufficient to satisfy continuum behavior in all directions. The mechanical... | 02/04/1986 |
