Patents Assigned to The United States of America as represented by the Secretary of the Army
  • Mine effects simulator system
    Patent number: 5074793
    Abstract: A mine effects simulator system for simulating the operation and encounter f land mines and their potential effects on an armored vehicle. The system utilizes an authentic land mine activation mechanism, radio transmitter and logic circuitry and provides a radio frequency signal when activated by the proximity of an armored vehicle. The armored vehicle has a receiver device which receives the signal to determine a "hit" or "kill" based upon the time of the mine detonation with respect to mine to vehicle position.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: December 24, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Harry N. Hambric, Wilfred J. Gregson, II, James D. Lundin, Kenneth V. Strittmatter, Lawrence A. Koster
  • Method of making and improved scandate cathode
    Patent number: 5074818
    Abstract: An improved scandate cathode is made from a hollow cylinder of a metal that ill not react with Sc.sub.2 (WO.sub.4).sub.3. The first step in making such a cathode is to insert a metal plug at the bottom of the cylinder to a height that will allow the remaining volume of the cylinder to be filled with the reactants WO.sub.3 and Sc.sub.2 O.sub.3. Next, the reactants are heated in a vacuum to about 1100.degree. C. to form the reaction product Sc.sub.2 (WO.sub.4).sub.3. The plug is then removed from the cylinder, the cylinder is inverted, and BaH.sub.2 is added to the volume of the cylinder that had been occupied by the plug. Finally, the cylinder is heated to decompose the BaH.sub.2.
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: December 24, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Louis E. Branovich, Donald W. Eckart, Gerard L. Freeman, Bernard Sith
  • Variable inverted microstrip coax test fixture
    Patent number: 5075630
    Abstract: A test fixture for inverted microcircuits having spaced shelf assemblies h parallel shelves for respectively supporting a substrate for a microcircuit and a substrate for a ground plane in such a manner that the distance between them can be varied while test signals are coupled to the microcircuit via a coaxial cable coupled to a fitting on one shelf assembly and signals are coupled from the microcircuit via a coaxial cable coupled to a fitting on the other shelf assembly to test apparatus for determining the performance of the circuit.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: December 24, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Richard W. Babbitt, Thomas E. Koscica, Adam Rachlin
  • Analog and analytical computation method for determining detector MTF
    Patent number: 5075883
    Abstract: An analog computer method provides modulation transfer functions (MTF) expressions or graphs for arbitrary shaped detectors in an arbitrary scan direction. Fraunhofer diffraction calculations or measurements given for specific shaped apertures are used for calculating detector MTFs of similarly shaped detectors. In an analog measuring device, an aperture in an opaque screen may be made the shape of a detector whose MTF is to be calculated. The aperture is flooded with laser light which produces a Fraunhofer irradiance pattern at an observing screen which is parallel with the opaque screen, for measuring the irradiance in the Fraunhofer plane at the observing screen. A sensor, which has a detector small compared with the diffraction pattern, is moved along the chosen thermal imager scan direction, in the Fraunhofer plane.
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: December 24, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Melvin H. Friedman, Max L. Harwell
  • Enhanced magnetic field within enclosed annular cavity
    Patent number: 5075662
    Abstract: The fabrication of a flux source using magnetically rigid material is dissed for deriving a magnetic field of uniform density and enhanced magnitude within an enclosed annular cavity thereof. In the preferred embodiments, segments of the magnetically rigid material are configured and arranged in accordance with the desired direction of the magnetic field relative to the annular axis of the cavity.
    Type: Grant
    Filed: November 14, 1989
    Date of Patent: December 24, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Herbert A. Leupold, Ernest Potenziani, II
  • Cooperative passive identification system for moving or stationary objects
    Patent number: 5073780
    Abstract: This method can be used either as an independent radar system or as an adct to an existing radar system, after suitably modifying the existing system, and will provide a cooperative, Radio Frequency passive, identification system for either stationary or moving targets. The system uses suitable devices that will mechanically vibrate as a transponder mechanism as an attachment to stationary or moving targets. A sideband analyzer is used to identify the viberation pattern in the radar return, and therefore, identifies the target.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: December 17, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thomas A. Barley, Pierre M. Alexander, Gustaf J. Rast, Jr.
  • Broadband, multi-line, optical power limiting scheme
    Patent number: 5073705
    Abstract: This is a new use for known photorefractive crystals. If input radiation taining both non-coherent and multiple-line coherent radiation is directed into such a crystal from a predetermined range of directions with respect to the C axis of the crystal, rainbow scattering of the coherent radiation occurs, whereas normal scattering of the non-coherent radiation occurs. A detector toward which input radiation is directed through the crystal is thus protected from high-power, multiple-line coherent radiation such as that provided by a threat laser.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: December 17, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Edward J. Sharp, Mary J. Miller, William W. Clark, III, Gary L. Wood, Gregory J. Salamo
  • Pressure activated film tensioner
    Patent number: 5073022
    Abstract: The disclosed invention provides a means for controlling film flatness at r interfaces in the aperture where the film is used as an imaging medium between film holder plates, such as aperture plates. The film is held flat by lateral tension applied outward in all directions from the center portion of the area of the film being viewed by rubberized type O-rings in grooves on each of the aperture plates being clamped against the film by various clamping direct transverse pressure means. The lateral tension is caused by the stretch of the O-ring outward from the center of the aperture by the shape of grooves in the plates constraining any inward movement but providing bias movement of the O-rings outward.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: December 17, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Helmut H. Pistor, James C. Brown
  • Optical control of a microwave switch
    Patent number: 5073718
    Abstract: An optical switch control circuit for controlling a microwave switch using single optical control link. The optical switch control circuit includes, a light source, a control connected to the light source, an optic fiber cable having an end coupled to the light source, a field effect transistor coupled to a second end of the optic fiber cable, an amplifier coupled to the field effect transistor, an analog to digital converter coupled to the amplifier, and a multi-bit microwave switch coupled to the analog to digital converter.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: December 17, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Arthur Paolella
  • Optical control of a microwave switch
    Patent number: 5073717
    Abstract: An optical controlled switch circuit for controlling a two-way voltage drn microwave switch. The optical controlled switch circuit includes, a light source, a control connected to the light source, an optic fiber having an end coupled to the light source, a field effect transistor coupled to a second end of the optic fiber, an inverting dc amplifier means coupled to the field effect transistor, a non-inverting dc amplifier means coupled to the field effect transistor, and a two-way voltage driven microwave switch having signal inputs respectively coupled to the inverting dc amplifier means and to the non-inverting dc amplifier means and having a microwave input and having first and second microwave outputs.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: December 17, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Dana J. Sturzebecher, Arthur Paolella
  • Projectile tail cone
    Patent number: 5070791
    Abstract: A projectile for use as a range limiting type of projectile is provided. projectile is used with a selective cartridge in a smooth bore gun. This projectile has a body member and a connecting tail cone, which provides projectile roll and which provides velocity decay and high drag to limit projectile range. The tail cone has a conical outer surface which has a plurality of canted grooves.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: December 10, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: John J. Dineen, Winfred T. Watson, Gary Fleming
  • Dipole for magnetic field compensation
    Patent number: 5072204
    Abstract: A magnetic dipole of varying magnitude and orientation is disclosed wherein he dipole is comprised of an outer magnetic shell and an inner magnetic sphere which is rotatably mounted within the outer magnetic shell. Both the outer shell and the inner sphere are mode of magnetically rigid material and are each magnetized in a uniform direction parallel to a single longitudinal axis. The inner sphere is preferably rotated within the outer shell via a non-magnetic means such as a rod.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: December 10, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Herbert A. Leupold
  • Composition for use in flares
    Patent number: 5071497
    Abstract: A mixture containing 3,3-bis(aziodomethyloxetane) and strontium nitrate for se in flares.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: December 10, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Cecil D. Hassell, Lawrence A. Bickford, Sandra D. Smith, Gartung Cheng
  • Hybridoma cell lines and monoclonal antibodies to clostridum difficile toxins A and B
    Patent number: 5071759
    Abstract: Monoclonal antibodies produced by a family of murine hybrid cell lines are cross-reactive with both toxin A and toxin B of Clostridium difficile. The monoclonal antibodies are useful in an immunoassay for toxin A and toxin B of C. difficile, a casual agent of antibiotic-associated pseudomembranous colitis in humans and animals.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: December 10, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Sara Rothman, Mary K. Gentry
  • Optical time domain reflectometer calibration system
    Patent number: 5072111
    Abstract: An optical time domain reflectometer calibration system for use with an optical time domain reflectometer to check for accuracy of the optical time domain reflectometer in absolute and relative distance measurements as well as for attenuation measurements and receiver linearity.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: December 10, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Gary D. Gilino
  • Flexible membrane circuit tester
    Patent number: 5072176
    Abstract: A pattern of electrodes, with electrical lead lines to the electrodes, are arried by a thin-film membrane mounted on a frame. The pattern corresponds to a test point pattern on a circuit to be tested. The lead lines go to edge connectors on the frame. In order to test a circuit, the membrane is pushed against the test points by air pressure, such that capacitive coupling occurs between the electrodes and the test points.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: December 10, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Brian S. Miller, David R. Kaplan
  • Isolated press fit muzzle reference sight mount
    Patent number: 5068968
    Abstract: An improved reference sight mount device for use with a gun. The reference ight mount attaches to a gun tube having a mount receiving zone near the tube muzzle end. The mount includes a bracket for mounting a reference sight, and includes a band having a conformed internal diameter conforming to the receiving zone. The mount has an integral sight mounting bracket thereon and a lock for engagement with the gun tube. Three embodiments are described. In one embodiment, the mount receiving zone includes a shrink fit zone and the mount includes a conformed zone formed by a band having an internal diameter sized to expand upon heating and shrink into conformity with the mount receiving zone. In the preferred embodiment, the mount receiving zone includes a tapered press fit zone near the tube muzzle end and the band includes a tapered internal diameter press fit zone.
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: December 3, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Ruth C. Sillery
  • VX adsorption from a chlorofluorocarbon solvent using a macroreticular strong acid resin
    Patent number: 5069797
    Abstract: A polydivinylbenezene macroreticular strong acid resin can effectively detaminate solutions containing organophosphorus chemical warfare agents such as o-ethyl S-(2-diisopropylaminoethyl) methylphosphonothiolate (VX).
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: December 3, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Philip W. Bartram, Noel C. DiBona, James H. Buchanan, Dennis K. Rohrbaugh
  • Narrow band microstrip isolator
    Patent number: 5068627
    Abstract: A resonant microwave isolator is described in which a diagonal slot is fod in the top conductor of a microstrip, a strip of ferromagnetic material is mounted over at least a portion of the slot and magnetic flux is established in the ferromagnetic material in a direction intersecting the slot.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: November 26, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Richard W. Babbitt, Adam Rachlin, Thomas E. Koscica
  • Supersonic, low-drag, solid fuel ramjet tubular projectile
    Patent number: 5067406
    Abstract: A low-drag supersonic tubular projectile with self-contained thrust augmetion and capable of simultaneous dual internal air flows. One is a centrally located supersonic flow for providing low-drag characteristics, and the other a subsonic flow annularly arranged about the supersonic flow path, comprising a ramjet structure with solid fuel for deriving thrust augmentation enabling the projectile to achieve a terminal velocity which is substantially the same as or exceeding muzzle velocity.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: November 26, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Donald N. Olson, Joseph Huerta