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| Number | Title | Issue Date |
| 7260509 | Method for estimating changes in product life resulting from HALT using quadratic acceleration model A method provides early estimation of product life using accelerated stress testing data. In an embodiment, data measured from a product operating in a first, high-stress environment is used to predict how long the product will operate in a second, normal operating ... | 08/21/2007 |
| 7204160 | Biaxial and shear testing apparatus with force controls A testing apparatus having four-bar linkages pivotable to sleeves on opposite vertices with the sleeves of each vertex rotationally attached to each other. Links of each linkage are pivotally attached to loading plate assemblies securing a test specimen. During load... | 04/17/2007 |
| 7143642 | Integrated moisture, length, and strength tester A fiber testing station. Electrically conductive first fiber retaining means engage first ends of fibers, where the fibers extend in substantially one direction from the first fiber retaining means to distal second ends of the retained fibers. The first fiber retain... | 12/05/2006 |
| 6952959 | Method of designing a heat seal width This invention provides a method of designing a suitable heat seal width which is more resistant to unsealing than conventional heat-sealing, which involves the steps of; (1) heat-sealing a test piece of a sheet to be heat-sealed at a temperature lower than the fusi... | 10/11/2005 |
| 6895380 | Voice actuation with contextual learning for intelligent machine control An interactive voice actuated control system for a testing machine such as a tensile testing machine is described. Voice commands are passed through a user-command predictor and integrated with a graphical user interface control panel to allow hands-free operation. ... | 05/17/2005 |
| 6802214 | Envelope quality control apparatus A unit for evaluating various properties of a paper envelope. The unit is capable of examining an envelope and determining key features of the envelope, such as the amount of front seal adhesive present, the tear strength of the side seams and the presence of proper... | 10/12/2004 |
| 6561019 | Method and apparatus for tensile testing a spliced connection of fibers in a fiber splicing device In a fiber splicing device, an adjustment apparatus for moving a first fiber-section perpendicular to its end face is designed such that it is composed of at least one piezo-actuator and a drive. After the splicing of the two fiber ends, the piezo-actuato... | 05/13/2003 |
| 6250135 | Apparatus for detecting a defect in container end manufacture Apparatus for detecting a defect during the formation of a container end having a stay-on-tab secured thereto, particularly when the defect is associated with a mis-located tab, in which a portion of the apparatus will be moved by the defect which movemen... | 06/26/2001 |
| 6119527 | Method and apparatus for proof testing optical fibers A method, technique, and apparatus proof test an optical fiber interconnect by applying an ends off-set stress on the optical fiber until the optical fiber fails or breaks, either immediately (short-term strength), or as a result of the delayed-fracture/"... | 09/19/2000 |
| 6050140 | Adhesion tester An adhesion tester includes a dolly to be adhered to a coating to be tested; the dolly including at least a portion of a spherical surface; a frame having a hollow portion in a region thereof, in which region the dolly fits; a hydraulic piston within the ... | 04/18/2000 |
| 5798464 | Method of measuring extraction forces An extraction force tester which measures the force necessary to remove header pins from the sockets of a cable connector in a steady straight line motion, the extraction force tester includes: a base, a tensile force gauge slidably mounted to the base an... | 08/25/1998 |
| 5507189 | Apparatus for evaluating plane strain stretch formability, and method therefor Apparatus and a method for evaluating the plane strain stretch formability for thin steel sheets used in automotive bodies to provide easy evaluation of the plane strain stretch formability. The apparatus includes: a lower die and an upper die with a lock... | 04/16/1996 |
| 5421206 | Method and apparatus for mechanical strength testing of components In a method and apparatus for the mechanical strength testing of components with respect to a strength criterion an acoustic pulse in the form of an acoustic shockwave is introduced into a component to be tested such that the shockwave is reflected acoust... | 06/06/1995 |
| 5394754 | Apparatus for testing a hem flange and method for same A test apparatus for testing hem flanges that join automotive body panels is provided. This testing apparatus operates by engaging a hook member with a first body panel such that the first body panel is maintained in a held relationship with respect to th... | 03/07/1995 |
| 5386731 | Method and apparatus for measuring the tensile strength of powders A method and apparatus for measuring the tensile strength of aggregate material comprising a device in which a layer of dust is applied to a metal electrode, and an electric field is applied in such a way as to induce a charge (negative or positive) on th... | 02/07/1995 |
| 5379647 | Hole elongation testing system A system for testing and measuring hole elongation or deformation in a test article. The system includes a frame, a bearing member, and a referencing arm. The frame has a receiving area adapted to receive a portion of a test article. The bearing member is... | 01/10/1995 |
| 5193398 | Measuring method for determining the elongation after rupture of a tensile testpiece The invention relates to a measuring method to determine elongation after fracture on a tensile testpiece in a computer controlled tensile test. To meet the requirements of the tensile test to DIN EN 10002/1, the measuring grid known from DIN EN 10002/1 i... | 03/16/1993 |
| 5094111 | Thermally insulated pipeline coating test A method for determining the elongation before rupture of a syntactic material. The syntactic material consists of hollow microspheres in a polymer matrix material and may be used as insulation for deep water sub-sea flowlines, an application which requir... | 03/10/1992 |
| 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 |
| 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 |
| 4825702 | Yarn testing method The invention provides a method of testing yarn comprising periodically feeding a length of yarn by means of a fluid stream along a pathway so that it extends between a pair of spaced clamps, clamping the length of yarn towards the ends thereof by means o... | 05/02/1989 |
| 4821579 | Apparatus for clamping a test sample in a testing machine In a test sample clamping apparatus for testing machines, having a clamping head or chuck and a force sensor (2) arranged on the chuck, testing forces are measured with a force sensor and displacements or test sample deformations are measured simultaneous... | 04/18/1989 |
| 4763521 | Method and apparatus for determining weldability of thin sheet metal A fixture is provided for testing thin sheet metal specimens to evaluate hot-cracking sensitivity for determining metal weldability on a heat-to-heat basis or through varying welding parameters. A test specimen is stressed in a first direction with a load... | 08/16/1988 |
| 4716767 | Rupture testing apparatus for boiler tubes A boiler tube rupture testing apparatus and method in which two segments are inserted into a tube section which sections together form a disc having a outer diameter slightly less than the inner diameter of the tube section. A creep rupture machine is con... | 01/05/1988 |
| 4706387 | Device for measuring hole elongation in a bolted joint A device to determine the operable failure mode of mechanically fastened lightweight composite joints by measuring the hole elongation of a bolted joint is disclosed. The double-lap joint test apparatus 10 comprises a stud 20, a test specimen 30 having a ... | 11/17/1987 |
| 4662227 | Apparatus for measuring pull-out resistance A testing apparatus for measuring the pull-out resistance of fasteners. The apparatus includes a disc rotatably supported by a base. The disc has a bearing surface with a uniform radius. A flexible strap is fixed to the disc so that the strap is carried b... | 05/05/1987 |
| 4637260 | Can end tester An apparatus is disclosed for testing easy-open can ends. The apparatus orients the ends, opens the ends, tests the ends to assure that opening has occurred and separates defective ends which have not successfully opened from acceptable ends.... | 01/20/1987 |
| 4624144 | For testing machines, improvements in determining rupture point and setting gauge length A tensile testing machine has a pair of cross heads relatively movable along an axis, each cross head having a mechanism for fixedly holding one end of an electrically conductive specimen and in at least one of said mechanisms, electrical insulating means... | 11/25/1986 |
| 4572002 | Apparatus for determining the fatigue limit of elastic material under completely reversed stress In order to determine the fatigue limit of elastic materials, especially rubber, under completely reversed stress by applying a load which alternates between zero and a maximum value and in order to determine the number of load alternations which leads to... | 02/25/1986 |
| 4554838 | Fastener tester A fastener tester for testing fasteners for securing a plurality of workpieces together with such fasteners including a pin member having an elongated shank with the fastener tester including a pair of relatively movable members adapted to have a fastener... | 11/26/1985 |
| 4550613 | Apparatus for automatic determination of the tensile strength properties of a sheet of paper The present-day devices for automatic determination of the tensile strength properties of a sheet of paper are complicated, inconvenient to operate and incapable of producing immediate test results. According to the invention, the apparatus comprises two ... | 11/05/1985 |
| 4444058 | Method and apparatus for determining tensile strength A method and apparatus for determining the statistical distribution of apparent tensile strength of rock, the size effect with respect to tensile strength, as well as apparent deformation modulus of both intact and fractured or jointed rock. The method is... | 04/24/1984 |
| 4426875 | Strain measurement The elongation of a rope or cable under impact stress is measured by attaching a light emitting diode (LED) to a free-falling weight which loads the rope upon impact. The LED is turned on in response to a drive signal indicative of stress of the rope of g... | 01/24/1984 |
| 4099408 | Method for testing sheet metals A method of determining properties of sheet metal uses a specimen having a full width section and a reduced width section about 95% the width of the full width section in a tensile test. The strain hardening exponent is calculated from thickness and width... | 07/11/1978 |
| 4061022 | Hair testing apparatus A tensile tester for hair strands in which the strand of hair is stretched between two movable members. The first member is supported from a frame by a pair of parallel flat springs, and the second member is cycled back and forth by an electric motor alon... | 12/06/1977 |
| 4046000 | Apparatus and method for testing article carriers Loaded article carriers of the basket style are tested by engaging the handle of the carrier with hanger means secured to a suitable gauge mounted on a ram which is driven upwardly by motive means in such manner as to cause the articles to engage a fixedl... | 09/06/1977 |
| 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 |
| 4031746 | Automatic tensile test apparatus An automatic tensile test apparatus includes an output device which supplies an elongation data of the specimen to the data processor in cooperation with means to optically detect said elongation, means to electrically detect said tension of said specimen... | 06/28/1977 |
| 3974686 | Extensometer for tensile tester The extensometer has first and second gripping portions on spaced members designed to be applied to a specimen by using only one hand. Changes in the length of the specimen are indicated by an electrical signal derived from a flexure strain gage arrangeme... | 08/17/1976 |
| 3938373 | Method and apparatus for tensile testing of metal foil Accurate, reproducible results in the tensile testing of thin metal foils are obtained by a method which comprises before placing the test specimen in a tensile testing machine, working the side edges of the test specimen until the edges are parallel and ... | 02/17/1976 |
