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| Number | Title | Issue Date |
| 7354491 | Method and apparatus for universal metallurgical simulation and analysis A method and apparatus (5) for simulating and analyzing industrial thermal processes, including industrial heat-treatment, processes, melting, solidification, quenching and the like, used in the manufacture of metals, alloys and metal matrix composite compone... | 04/08/2008 |
| 7240545 | Test apparatus for direct measurement of expansion and shrinkage of oil well cements A test apparatus for the measurement of expansion and/or shrinkage of a cement test sample during curing under pressure and temperature conditions that simulate downhole oil well conditions isolates the test sample from a first fixed volume of incompressible pressur... | 07/10/2007 |
| 7104680 | Thermal analyzer with gas mixing chamber In a thermomechanical measuring device and a thermogravimetry device, partition walls are provided in two sections such that two kinds of atmospheric gasses, which have passed a sample chamber and a detector chamber, respectively, do not flow back, and a thermally i... | 09/12/2006 |
| 7025499 | Device for testing a material that changes shape when an electric and/or magnetic field is applied A device for testing a material that changes shape when an electric and/or magnetic field is applied, in particular a piezoactive material, having a generator to generate an electric field and/or a magnetic field is described. This permits a rapid characterization o... | 04/11/2006 |
| 6939036 | Temperature-expansion indicator for siding panels A temperature indicator for a siding panel senses panel temperature and indicates on a graphic scale the corresponding effect of thermal expansion over differences in temperature. The temperature indicator can be various forms of contact thermometer, temperature str... | 09/06/2005 |
| 6918292 | Cement expansion/contraction test method An apparatus for measuring volumetric changes in cement as the cement is exposed to pressures and temperatures to simulate down-hole conditions, in a high-pressure high-temperature chamber is described. The apparatus is described a mold having a first section adjace... | 07/19/2005 |
| 6844720 | Method and apparatus for calibrating a linear variable differential transformer A calibration apparatus for calibrating a linear variable differential transformer (LVDT) having an armature positioned in au LVDT armature orifice, and the armature able to move along an axis of movement. The calibration apparatus includes a heating mechanism with ... | 01/18/2005 |
| 6776520 | Method for determining a coefficient of thermal expansion and apparatus therefor A method for determining the Coefficient of Thermal Expansion of a specimen. The specimen is placed in the tester and a tensile force is applied to the specimen. The specimen is equilibrated at a first temperature and then elongated. After reaching a desired elongat... | 08/17/2004 |
| 6711518 | Method for electronically aligning the frequency of an infrared transmitter A method is provided for aligning the center frequency of an infrared transmitter. The method comprises the steps of: (a) providing a voltage-controlled oscillator for driving the infrared transmitter, where the oscillator is adapted to receive a bias voltage from a... | 03/23/2004 |
| 6672759 | Method for accounting for clamp expansion in a coefficient of thermal expansion measurement The present invention is a method to eliminate the influence of clamp dimensional changes on the displacement measurement during the measurement of the coefficient of thermal expansion (CTE) of samples in tension. In a first embodiment clamp dimensional c... | 01/06/2004 |
| 6535824 | Sensor array-based system and method for rapid materials characterization A modular materials characterization apparatus includes a sensor array disposed on a substrate, with a standardized array and contact pad format; electronic test and measurement apparatus for sending electrical signals to and receiving electrical signals ... | 03/18/2003 |
| 6527438 | Aggregate dilatometer device and methods of testing Methods and devices for improved measurement of the thermal expansion and/or chemical reactivity of aggregates used in concrete and for similar substances. Aggregate is placed into the chamber of a metallic container having an enlarged opening. The aggreg... | 03/04/2003 |
| 6375349 | Instrument configured to test multiple samples for the determination of thermophysical properties by the flash method An instrument for determining thermophysical properties of a solid sample of uniform thickness is disclosed. The instrument comprises a furnace, an elliptical mirror outside the furnace, a light source at one focus of the elliptical mirror that is closest... | 04/23/2002 |
| 6019506 | Method for estimating thermal displacement in a machine tool A method for estimating the thermal displacement of a rotatable component of a machine tool is provided which includes the steps of: (A) generating a signal representative of the temperature of at least one rotatable component of a machine tool, the compo... | 02/01/2000 |
| 6007240 | Method and apparatus for modulated-temperature thermomechanical analysis By employing a "modulated-temperature" heating program composed of a series of heat-isotherm stages, it is possible to separate the change in dimensions of an oriented material during heating into two contributions: a thermally "reversing" component which... | 12/28/1999 |
| 5826983 | Thermomechanical analyzer equipped with a thermogravimetry function A thermomechanical analyzer capable of performing, in addition to thermomechanical measurement, thermogravimetry of a sample of several grams or more only by switching parts of the analyzer. A thermomechanical analyzer has a heating furnace, a temperature... | 10/27/1998 |
| 5528151 | Thermal fatigue testing using plural test trips with graduated sizing and recessed anchoring A plurality of fatigue life test strips (16, 18, 20, 22) has each of the strips anchored to a base (12) which is subject to thermal cycling and consequent dimensional change which causes fatigue. The base is, at best, semiconductive, and the strips are co... | 06/18/1996 |
| 5362151 | Device for measuring thermal expansion A device for measuring the thermal expansion of a sample comprises a measurement radiation generator, a base member incorporating a reference groove and a furnace. The furnace has an external reference contour adapted to cooperate with the reference groov... | 11/08/1994 |
| 5347851 | Capillary rheometer plunger pressure transducer and measurement technique A capillary rheometer apparatus includes a housing, a plunger, the housing having a reservoir for receiving the plunger in a polymer melt, and a mechanism for blocking flow of the melt out of the reservoir. A driving mechanism is included for driving the ... | 09/20/1994 |
| 5248200 | Portable asphalt stress and strain measuring device A thermally stable fixture for testing asphalt samples is characterized by easurements of both thermal stresses and strains in the sample. The device uses air as the sample cooling or heating fluid for inducing thermal stresses and strains therein. Strains... | 09/28/1993 |
| 5099096 | Microwave furnace having microwave compatible dilatometer An apparatus for measuring and monitoring a change in the dimension of a sample being heated by microwave energy is described. The apparatus comprises a microwave heating device for heating a sample by microwave energy, a microwave compatible dilatometer ... | 03/24/1992 |
| 5055648 | Apparatus and method for mechanical properties testing An apparatus and method are described for maintaining a constant temperature across an electrically conductive specimen required to be mechanically tested. The invention includes resistance heating the specimen to a desired level during mechanical testing... | 10/08/1991 |
| 5009512 | Device and method for measuring the deformations of a sample A device and method for measuring the deformations of a sample, which deformations particularly result from the relaxation of the stresses to which the samples was previously subjected. The device and method include the use of a cell inside which the samp... | 04/23/1991 |
| 4976549 | Apparatus and method for direct measurement of coal ash sintering and fusion properties at elevated temperatures and pressures A high-pressure microdilatometer is provided for measuring the sintering and fusion properties of various coal ashes under the influence of elevated pressures and temperatures in various atmospheres. Electrical resistivity measurements across a sample of ... | 12/11/1990 |
| 4923307 | Dilatometer An improved dilatometer suitable for testing the coefficient of thermal expansion (CTE) of a workpiece. The workpiece having a CTE in the range of -0.2×10-6 inch/inch °F. to 0.2×10-6 inch/inch/°F. The improvement includes a refer... | 05/08/1990 |
| 4896973 | Thermomechanical analysis apparatus A thermomechanical analysis apparatus includes a probe assembly supported in substantially weightless contact with a sample material over a range of displacement of the probe by means of a linear motor controlled from a constant current source. The probe ... | 01/30/1990 |
| 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 |
| 4762424 | Low temperature dilatometer Low temperature dilatometers are described which employ a combination cryostat/furnace made from an elongated block of metal by drilling separate longitudinal tubular chambers for insertion of a specimen tube containing a specimen and at least one electri... | 08/09/1988 |
| 4687343 | Deformation dilatometer platens Deformation dilatometers are described for heating, deforming and cooling a test specimen, as well as for measuring changes in the linear dimensions of that specimen. A ferrous metal specimen, that is held between a fixed and a movable fused silica or qua... | 08/18/1987 |
| 4636090 | Low temperature dilatometer Low temperature dilatometers are described which employ a combination cryostat/furnace made from an elongated block of metal by drilling separate longitudinal tubular chambers for insertion of a specimen tube containing a specimen and at least one electri... | 01/13/1987 |
| 4548515 | Multiple sensor dilatometer Dilatometers are described which employ measuring heads having multiple linear variable differential transformer dilation sensors for concurrently measuring the thermal dilation of multiple specimens within a single conventional electric tube furnace. The... | 10/22/1985 |
| 4521119 | Constant load dilatometers Differential dilatometers are described which employ a linear variable differential transformer dilation sensor in which the core and/or coil is independently supported to accommodate the imposition of a constant load on a specimen abutting a pushrod coup... | 06/04/1985 |
| 4354764 | Specimen testing apparatus A specimen testing apparatus is disclosed, including a sensing device for engaging a specimen mounted on a support, an electrical measuring system associated with the sensing device for producing an electrical signal that is a function of a variation in a... | 10/19/1982 |
| 4351615 | Differential dilatometer A differential dilatometer for simultaneously measuring the relative expansion of two different solid test samples, one of which can be a reference sample. The test sample and the reference are mounted in a support tube and suspended from a head, and the ... | 09/28/1982 |
| 4069703 | Plastic orientation measurement instrument An apparatus for measuring degree of orientation in small oriented plastic samples which operates on the principle of measurement of dimensional changes in the samples before, during and after they pass through the temperature range at which the samples' ... | 01/24/1978 |
| 4054049 | Thermal extensometer The device employs an electrical transducer for measuring thermal deformation in a specimen with a high degree of resolution. The device basically comprises a link which linearly spans the specimen in the direction and at the location in which the deforma... | 10/18/1977 |
