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| Number | Title | Issue Date |
| 8122774 | Test tool A test tool assembly for use in testing a tubular component, such as a pipe section, is mounted on the exterior surface of the pipe section. The assembly includes a force-generating arrangement for generating and applying an axial load to the pipe section. One end o... | 02/28/2012 |
| 7921708 | Engine block durability test The object of the invention is to provide an alternative method for durability testing of an engine block. The engine block comprises cylinder cavities, which cylinder cavities are separated from each other by intermediate walls, each intermediate wall comprising a ... | 04/12/2011 |
| 7353715 | System, apparatus and method for testing under applied and reduced loads A system which cyclically applies and reduces a load on a test specimen and which can use an apparatus comprising: (a) a frame; (b) a load adjusting section having a fluidic mechanical muscle that contracts and extends in length to cyclically apply and reduce a load... | 04/08/2008 |
| 6912916 | Polyvalent test stand A test stand for allowing the testing of both a pull-type lifting apparatus and a push-type lifting apparatus. The test stand includes a base and a carriage component, the carriage component including a load transmitting section and a sensor receiving section. The l... | 07/05/2005 |
| 6276216 | Pneumatic lifting device with integrated apparatus for measuring a tensile force A force gage for measuring a tensile force in a pneumatically-operated device, includes a parallelogram linkage having a pair of longitudinal arms in spaced-apart parallel disposition, and a pair of transverse arms in spaced-apart parallel disposition and... | 08/21/2001 |
| 6167764 | Stud tensioning method The tension in a stud is verified by determining the elongation of the stud while attached to a stud tensioner during the tensioning step. The pressure of hydraulic fluid in a hydraulically actuated tensioner is increased from a first low pressure to a hi... | 01/02/2001 |
| 6092414 | Method for analyzing a separation in a deformable structure A deformable structure is subjected to a plurality of reduced pressures, causing a bulge in the surface of the deformable structure above a separation in the deformable structure. The cross sectional area of the bulge is measured for each reduced pressure... | 07/25/2000 |
| 6089085 | Method for analyzing a separation in a deformable structure A deformable structure is subjected to a plurality of reduced pressures, causing a bulge in the surface of the deformable structure above a separation in the deformable structure. The cross sectional area of the bulge is measured for each reduced pressure... | 07/18/2000 |
| 5741976 | Apparatus for the single-axis examination of micro-tension samples An apparatus for single-axis examinations of micro samples in a tensile testing machine having opposite pull rods between which the apparatus is mounted for the application of tensile forces to a micro-sample includes a load frame for the connection to th... | 04/21/1998 |
| 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 |
| 5616852 | Method and apparatus for measuring fabric stress A device for measuring woven fabric stress. The device includes a vacuum chamber having high rigidity; a vacuum pump for reducing the pressure in the vacuum chamber; a pressure gauge; a fabric displacement measuring device; and a fabric stress calculator.... | 04/01/1997 |
| 5005424 | Machine and method for uniaxial mechanical material testing Testing machine for the mechanical testing of material samples comprising a first and a second force engagement device, a first and a second sample engagement device, a first force measuring device which is positioned between the first sample engagement d... | 04/09/1991 |
| 4930355 | Hydraulic drive apparatus and method for instrumented penetration and tensile-impact testing Apparatus and a method are provided for tensile-impact and penetration testing of sample elements, utilizing hydraulic flows to accelerate a lead-in piston inside a cylindrical hydraulic chamber in controlled manner to thereby deliver a predetermined amou... | 06/05/1990 |
| 4928532 | Hydrostatic self-aligning axial/torsional mechanism The present invention is directed to a self-aligning axial/torsional loading mechanism for testing the strength of brittle materials which are sensitive to bending moments. Disposed inside said self-aligning loading mechanism is a frictionless hydrostatic... | 05/29/1990 |
| 4866991 | Stretchable fiber measurement station Apparatus and method for determining and comparing the stretchability of fabrics. The apparatus and method comprise a support tube upon which is mounted one or more annular, inflatable bladders. A stretchable fabric sample is pulled over the support and t... | 09/19/1989 |
| 4864866 | Mechanical property testing machine In accordance with the present invention, a low in weight, portable, mechanical property testing machine is provided in which no special testing machine foundation is required, and a standard power supply may be used. The applied load to test the specimen... | 09/12/1989 |
| 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 |
| 4843888 | Self aligning test grip A tensile test grip for holding a specimen has a pullrod that is mounted in an annular bore, and carries a piston head that fits within a piston chamber, and both the pullrod and piston head are sealed on their outer surfaces with respect to the body form... | 07/04/1989 |
| 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 |
| 4748854 | Fatigue test apparatus A fatigue test apparatus in which a specimen to be tested is attached at its ends to a pair of opposing pistons positioned within a pair of opposing cylinders. The cylinders are attached to a support frame such that the specimen is oriented substantially ... | 06/07/1988 |
| 4736633 | Multipurpose lifting and pulling vehicle The multipurpose vehicle of the present invention is designed to operate in and around dry docks and wharfs and its capable of lifting and moving propellers from propeller shafts within areas confined by a ship's rudder and to carry the propeller to an ar... | 04/12/1988 |
| 4686860 | Self-aligning hydraulic piston assembly for tensile testing of ceramic The present invention is directed to a self-aligning grip housing assembly that can transmit an uniaxial load to a tensil specimen without introducing bending stresses into the specimen. Disposed inside said grip housing assembly are a multiplicity of sup... | 08/18/1987 |
| 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 |
| 4475404 | Pull tester A device for testing the tensile strength of fiberglass rods. A hydraulic ram system applies force through specially shaped holders to the ends of fiberglass sucker rods having end connectors mounted by a combination of adhesive and compression joints.... | 10/09/1984 |
| 4290343 | High volume poppet valve with orifice opening speed control A high volume valve for controlling flow of fluid from a source of fluid under pressure, such as in an accumulator, to an actuator used for testing specimens under high rates of loading. The valve includes a poppet type valve piston that is normally held ... | 09/22/1981 |
| 4274290 | Rapid opening, high flow control valve for hydraulic actuator A rapid opening valve assembly utilized in high rate specimen test systems which require that an actuator load a specimen at rates in the range up to one thousand inches per second and with deflections up to three inches. The high rate valve utilizes a po... | 06/23/1981 |
| 4129033 | System for determining the level of heat treatment The level of heat treatment of metal strip in a process line is determined by first strain gauge producing a voltage proportional to longitudinal strip tension; selective means deflecting the strip in a lateral direction without materially effecting tensi... | 12/12/1978 |
| 4059992 | Apparatus for testing the tensile strength of sheet material An improved testing device for testing the tensile strength of sheet material, such as paper, including a first pair of vertically moving jaws mounted on a support and a second pair of vertically moving jaws hanging from the first support in a pendulum ma... | 11/29/1977 |
| 4044595 | Short span tensile tester system A short span tensile tester for testing a sheet such as a paper web is provided with two pairs of clamping jaws mounted in adjacent clamping relation, to clamp a portion of sheet material therebetween, one pair of jaws being pivotably mounted to swing und... | 08/30/1977 |
| 3994158 | Hydraulically operated workpiece testing machine Two stationary uprights are mounted on a support and each of them carries a piston. Each upright is surrounded by a vertically movable cylinder whose interior is subdivided by the respective piston with an upper and a lower chamber. Fluid passages are for... | 11/30/1976 |
| 3954005 | Proof loading apparatus for testing rod-like articles Proof Loading apparatus for the non-destructive testing of rod-like articles, characterized in that it comprises a jack housing (1) incorporating at least one hydraulic ram (2, 3), first and second gripping devices (17) arranged at opposite ends of the ja... | 05/04/1976 |
| 3945248 | Wire bond integrity tester A vacuum operated testing device measures the bond integrity of wires connected to integrated circuit modules by applying a known and infinitely variable tensile force to the wire under test.... | 03/23/1976 |
| 3942368 | Portable pull testing unit for installed earth anchors A lightweight, compact, portable pull-testing device is disclosed which is especially adapted for testing the load capabilities of installed, relatively small earth anchors such as those utilized with hold-down equipment for mobile homes or the like. The ... | 03/09/1976 |
| 3934464 | Pipe ring test machine A machine for testing the tensile properties of sections of pipe or tubing, incorporating a split post, with the post halves being displaceable relative to each other to apply a predetermined tensile stress to a ring segment cut from a length of pipe and ... | 01/27/1976 |
