Patents Examined by Max H Noori
  • Patent number: 5922967
    Abstract: A plurality of strain gages are installed on a structural body at n positions thereon. A concentrated reference load is applied to the structural body at one of the n positions and strains developed in the structural body at the respective n positions are measured when the concentrated reference load is applied to the structural body. The measured deformations are divided by the concentrated load reference to produce strains per unit load. The above process is repeated at each of the n positions to generate the practical equations given below: ##EQU1## where .kappa.11.about..kappa.nn represent strains per unit load, A1.about.An represent estimated loads (unknowns), and .epsilon.1.about..epsilon.n represent measured strain data.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: July 13, 1999
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Keiichi Motoyama
  • Patent number: 5920017
    Abstract: An improved method for measuring residual stress in a material comprising the steps of applying a spot of temperature indicating coating to the surface to be studied, establishing a speckle pattern surrounds the spot of coating with a first laser then heating the spot of coating with a far infrared laser until the surface plastically deforms. Comparing the speckle patterns before and after deformation by subtracting one pattern from the other will produce a fringe pattern that serves as a visual and quantitative indication of the degree to which the plasticized surface responded to the stress during heating and enables calculation of the stress.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: July 6, 1999
    Assignee: Westinghouse Savannah River Company
    Inventor: Martin J. Pechersky
  • Patent number: 5918287
    Abstract: A measurement device and method for measuring tension in an optical fiber or wire. The measurement device includes a device for producing a vibration surge in the optical fiber or wire which vibrates at a certain, pre-selected frequency and advances as a linearly polarized wave. An optical location-sensitive detector measures the advancing speed (v) of the wave. An illuminator device illuminates the optical fiber or wire so that a shadow or an image of the vibrating fiber or wire is cast onto the indictor whereby the tension (T) of the optical fiber or wire is calculated from the equation T=v.sup.2 .multidot.M, when M is the fiber mass per unit of length of the optical fiber or wire. The indicator device measures the time at which a departing wave surge passes by the indicator and the time at which an arriving wave surge reflected from a subsequent coating vat, or other wave reflector, passes by the indicator.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: June 29, 1999
    Assignee: Soundek Oy
    Inventors: Mauri Luukkala, Heikki Rajkkonen
  • Patent number: 5918284
    Abstract: A semi-automated machine for singulating individual surgical needles from an bulk supply and attaching a suture to the surgical needle is described. Each of the surgical needles has a suture receiving opening formed therein for receiving a suture. The machine includes a needle singulation station, a precise positioning station, a suture feeding station, a swage station, a pull-test station and an off-load station. A universal gripper mounted on a rotary indexing device automatically receives each individual needle in a predetermined orientation and conveys the needle for sequential processing from station to station to form the needle-suture assembly. A swage station is provided for swaging the needle to close the suture receiving opening about the suture to secure said suture thereto and form therefrom a needle and suture assembly. The suture pull-test station tests each needle suture bond with a pre-determined pull for quality control. This pull is adjustable via a precision spring tension device.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: June 29, 1999
    Assignee: Ethicon, Inc.
    Inventors: John F. Blanch, Anthony Esteves, David D. Demarest
  • Patent number: 5918283
    Abstract: A first aspect of the invention relates to an epoxy resin coating used in reflection photoelasticity, which is "black" in the infra-red part of the spectrum; another aspect to the use of an epoxy resin as a coating on at least one surface of a body to be subjected to cyclic loading and examined by thermoelasticity, and another aspect to a method of making thermoelastic measurements of a body when subjected to cyclic loading and hence measurements of stresses or strains, comprising, as an initial step, coating the surface(s) of the body to be measured with an epoxy resin whereby the surface(s) so coated represents a black body.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: June 29, 1999
    Assignee: The University of Sheffield
    Inventors: Eann Alexander Patterson, Sandro Barone
  • Patent number: 5915279
    Abstract: The disclosed method determines at least a first measurement parameter of an object by locating the object in a measurement interaction volume having a light absorbing background and passing through that volume a measurement light beam which has at least two spectrally different wavelengths of light. The measurement light is interacted with the object to product measurement outgoing light which is light reflected from the object while in the measurement reaction volume. That outgoing light is filtered into at least two spectrally different outgoing light portions which are detected and generated therefrom are signals which are a function of the at least a first measurement parameter which is then determined from those signals.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: June 22, 1999
    Assignee: Commonwealth Scientific and Industrial Research Organization
    Inventors: Christopher Joseph Cantrall, Barry Victor Holcombe, Graham John Higgerson, Roger Neil Caffin, William Humphries
  • Patent number: 5911785
    Abstract: A test fixture and method emulate the inputs and/or outputs to a controller and motor of a spin rinse dryer to permit selective testing of the controller and/or motor thereof. In some instances, the test fixture enables testing of a spin rinse dryer controller and/or motor to be performed outside of a clean room environment, and without requiring a spin rinse dryer to be taken off-line. In other instances, the same test fixture enables diagnosis of which component if any has failed in a production spin rinse dryer so that the failed component can be replaced quickly to minimize the downtime of the equipment.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: June 15, 1999
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventors: Douglas A. Czaja, Robert Bolanos
  • Patent number: 5913246
    Abstract: The invention is a machine for the cyclic load testing in tension, compression, torsion, shear, or any combination thereof of any one of a number of different sizes, types and configurations of test specimens at a fixed or adjustable predetermined load and cycle rate and comprising a machine frame in which is mounted a drive shaft, any number of intermediate shafts as required, and a camshaft or crankshaft. At the workstation of the machine, appropriate fixtures and tooling are either fixed, rotating, or in motion, as required to conduct the particular test to be performed. When the test specimen is to be in motion, the motion may be derived from a driving source separate from the primary mover or camshaft, for instance but not limited to an independent motor or cylinder. This source of motion may also be taken through a drive train or any suitable means from the same driving source as the camshaft or from the camshaft itself or from any other moving member in the system.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: June 15, 1999
    Inventors: Robert Joseph Simonelli, Robert James Simonelli, James M. Simonelli
  • Patent number: 5911161
    Abstract: An apparatus and method are disclosed wherein a linear array of electromagnetic radiation emitting devices are arranged in association with a moving workpiece. Electromagnetic radiation emitted by the array is received by two or more receivers. Several non-contact measurements may be obtained on a workpiece using the present apparatus and methods.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: June 8, 1999
    Assignee: Harris Instrument Corporation
    Inventor: David E. Harris
  • Patent number: 5911165
    Abstract: An improved method and device for measuring the mechanical properties of fibrin clots. A mixture of fibrinogen and thrombin is formed between two synthetic polymeric substrate materials and allowed to form a fibrin clot. The force required to separate the substrate materials is then measured and indicates the strength of the clot.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: June 8, 1999
    Assignee: Bayer Corporation
    Inventors: John W. Guo, Rajiv Nayar
  • Patent number: 5910187
    Abstract: Method of detecting yarn unevenness appearing as periodic variations of a spun yarn. First, plural yarn samples are taken. Then, k distinct spectrograms are obtained according to the number of the samples. These k spectrums are averaged to create an overall spectrogram. The height of adjacent channels in the overall spectrogram are averaged to create a reference spectrogram. Either the overall spectrogram of the distinct spectrograms are compared with the reference spectrogram of find those portions of the channels that exceed the reference spectrograms in height. These exceeding portions are displayed. Therefore, realistic defective added nonuniformities contained in the spun yarn can be easily detected.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: June 8, 1999
    Assignee: Keisokki Kogyo Co., Ltd.
    Inventors: Kazuhiko Okuda, Hideki Oohata
  • Patent number: 5911166
    Abstract: A testing apparatus for measuring the tensile strength of a flat sheet of material with a set of clamping jaw members having respective clamping surfaces. A cylinder is provided for closing the first and second jaw members in a clamped position. Transitional members are provided for transferring the load developed by the cylinder to the first and second jaw members without any bending deflections occurring at the clamping surfaces which secure the sheet sample.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: June 8, 1999
    Inventor: Wavell F. Cowan
  • Patent number: 5908994
    Abstract: A tram monitor includes an x-axis arm, a y-axis arm, and a mounting base. The mounting base includes a mounting pedestal which is rigidly fastened to the mounting block. The x-axis arm includes an x-axis indicator, an x-axis indicator tube, an axial tube, a junction clamp, and an x-axis indicator clamp. The axial tube is firmly retained by the mounting pedestal at one end through the x-axis indicator clamp and the junction clamp on the other end. The x-axis indicator is fastened to the x-axis indicator tube on one end and to the junction clamp on the other. The y-axis arm includes a y-axis indicator, a y-axis indicator tube, and, a y-axis indicator clamp. The y-axis indicator tube is firmly retained by the mounting pedestal on one end through the y-axis indicator clamp and the y-axis indicator is fastened to the other end of the y-axis indicator tube. The mounting block is fastened to the ram of a milling machine.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: June 1, 1999
    Inventor: Edmund A. Malczewski
  • Patent number: 5908989
    Abstract: A saw blade (10), in particular for band saws, is moved through a measuring path and a rolling path in a direction of travel (A) which essentially corresponds to its longitudinal direction, with two marginal regions of the saw blade (10) being supported on the measuring path-and held down in a start portion and an end portion of same and thus being held in a common reference plane which contains the direction of travel (A) and the saw blade (10) being lifted above the reference plane by a supporting force which is exerted only in the central area of the measuring path.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: June 1, 1999
    Assignee: Vollmer Werke Maschinenfabrik GmbH
    Inventors: Ernst Beck, Norbert Bailer, Peter Bailer, Peter Lenard
  • Patent number: 5907095
    Abstract: The present invention is a high-sensitivity strain probe used in high-sensitivity sensor elements of force type. By the use of semiconductor process and wire bonding technology as well as integrated forming method, the fabricated elements include: a probe, a cantilever, a cantilever substrate, resistance materials, and a processing circuit that can be applied to a probe microscope to greatly reduce the number of elements of the scanning probe microscopy. The invention attains the object of lowering the cost and effectively solves the problems of an excessively large signal-to-noise ratio and avoids using the optical elements present in a conventional microscopic probe avoiding various inconveniences and shortcomings of the prior art.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: May 25, 1999
    Assignee: Industrial Technology Research Institute
    Inventor: Yung-Shi Lin
  • Patent number: 5907102
    Abstract: A stress-strain test for conductors. A test assembly receives first and second conductive layers and a dielectric layer adjacent each of the conductive layers. The layers are generally ring-shaped and concentric when received by the test assembly and the dielectric layer separates the conductive layers from each other. A magnetic field source provides a magnetic field to the test assembly and a variable current source provides current to the second conductive layer. A circuit measures a change in capacitance between the conductive layers when the current in the second conductive layer is varied whereby the stress and strain characteristics of the second conductive layer are determined as a function of the capacitance change.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: May 25, 1999
    Assignee: Florida State University
    Inventors: David K. Hilton, Huub W. Weijers, Yusuf S. Hascicek, Steven W. Van Sciver
  • Patent number: 5905204
    Abstract: A material test specimen design is taught for the determination of critical train and stress states for multiaxial fracture. The objective of the specimen is to increase the amount of data obtained per specimen while retaining simplicity in testing procedure by using standard tension testing machines to generate the primary deformation of the specimen. The specimen, in conjunction with analytical or computational simulation, uses nonuniform deformation fields produced by secondary and tertiary strain concentrations to generate and track these multiaxial strain states to fracture. Typically, the primary deformation is uniaxial tension of a panel, the secondary strain concentration is a circular hole in the panel and the tertiary strain concentrations are areas of reduced thickness within the deformation field of the circular hole. Multiaxial strain ratios from -0.50 to -0.10 and control over fracture initiation sites may be generated by a test specimen design of the type taught by this invention.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: May 18, 1999
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Virginia G. DeGiorgi, Andrew B. Geltmacher
  • Patent number: 5905212
    Abstract: Force transducers are integrated in an elastomeric flex bearing to provide signals for determining the tension and torque upon a tension member coupled to the bearing and for computation of the azimuth and elevation of the tension member. Preferably the force transducers are mounted to or embedded in an outer metal load ring of the flex bearing and are bonded with the outer metal load ring to the elastomer of the flex bearing. The force transducer, for example, include a diaphragm bonded to the elastomer, and the diaphragm has a diameter in excess of the spacing between the outer metal load ring and the nearest laminated metal reinforcement of the bearing. In one embodiment, metal foil strain gages are bonded to the surface of the diaphragm opposite from the elastomer. In another embodiment, the diaphragm transmits pressure to hydraulic fluid between the diaphragm and the outer metal support ring.
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: May 18, 1999
    Assignee: Continental Emsco Company
    Inventors: Charles J. Moses, Michael E. Hogan
  • Patent number: 5902935
    Abstract: Thermoplastic welding is an emerging technology targeted at significantly reducing the manufacturing cost of aerospace structure by eliminating fasteners and the touch labor associated with fasteners to prepare, install, and inspect the assemblies. Quality welds are highly dependent upon achieving appropriate temperatures everywhere along the bond line. The present invention is a system that evaluates the quality of the welds involving inputting an EM pulse to the embedded susceptor and listening to the acoustic response that the pulse generates to determine weld quality from the sound.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: May 11, 1999
    Inventors: Gary E. Georgeson, Larry E. Dolan
  • Patent number: 5902937
    Abstract: An in vitro tissue testing system especially useful for testing blood/tissue interactions. The system includes a tissue holding frame which forms a chamber between two flat pieces of tissue with a spacer plate therebetween. The spacer plate includes a reservoir aperture bordered on both sides by the opposed tissue pieces, and a mechanism for depressing portions of the tissue pieces inwardly into the chamber to propel blood from one side of the chamber to the other. The flow created simulates actual blood flow in a host system. The reservoir aperture may be hourglass shaped with circular end portions and a middle blood passageway. The actuating mechanism may include pistons for alternating contact with the tissue within the confines of the opposite reservoir end portions, thus propelling blood from one end portion to the other. The pistons may be driven by a plurality of eccentric cams on shafts coupled to a common drive motor.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: May 11, 1999
    Assignee: Baxter International Inc.
    Inventors: David L. Amrani, Danial R. Boggs, Keith A. Earles