The Government of the US, as represented by the Secretary of the Navy Patent applications |
Patent application number | Title | Published |
20150349430 | Radio Frequency Antenna Structure with a Low Passive Intermodulation Design - A low passive intermodulation antenna structure having a flexible antenna reflector with a plurality of reflector gores and with capacitively coupled RF joints between adjacent reflector gores. The coupling is accomplished by overlapping adjacent gores so a dielectric material between the conductive layers of the overlapping gores forms a capacitor, allowing RF currents to flow from one gore to another with very little disturbance. The structure can be a deployable parabolic multicarrier reflector system for a satellite antenna. | 12-03-2015 |
20150345872 | Temperature Actuated Capillary Valve for Loop Heat Pipe System - A capillary flow valve for use in a two phase heat transfer system such as a loop heat pipe, including an inlet port for receiving working fluid in a vapor-phase, an outlet port for outputting working fluid in a vapor-phase, and a porous wick material extending across the interior of the valve. Heating the wick evaporates liquid-phase working fluid from the wick and allows the vapor-phase working fluid to pass through the wick to the outlet port. Removing the heat allows liquid to condense in the wick, preventing flow of the vapor-phase working fluid through the wick to the outlet port. | 12-03-2015 |
20150340831 | SYSTEMS AND METHODS OF ACHIEVING HIGH BRIGHTNESS INFRARED FIBER PARAMETRIC AMPLIFIERS AND LIGHT SOURCES - Fiber optic amplification in a spectrum of infrared electromagnetic radiation is achieved by creating a chalcogenide photonic crystal fiber (PCF) structure having a radially varying pitch. A chalcogenide PCF system can be tuned during fabrication of the chalcogenide PCF structure, by controlling, the size of the core, the size of the cladding, and the hole size to pitch ratio of the chalcogenide PCF structure and tuned during exercising of the chalcogenide PCF system with pump laser and signal waves, by changing the wavelength of either the pump laser wave or the signal wave, maximization of nonlinear conversion of the chalcogenide PCF, efficient parametric conversion with low peak power pulses of continuous wave laser sources, and minimization of power penalties and minimization of the need for amplification and regeneration of pulse transmissions over the length of the fiber, based on a dispersion factor. | 11-26-2015 |
20150302567 | System and method for sun glint correction of split focal plane visible and near infrared imagery - A computer implemented method and system for reducing sunglint effects in a multispectral digital image from a satellite multiband imager having a sampling time delay between collection of a first bandset and a second bandset, each bandset including a near infrared band and a plurality of other wavelength bands. For each bandset separately, extract pixels in a window surrounding a current pixel, determine a local low glint value as the characteristic value of a small subset of pixels in the window having the lowest near infrared reflectance values, determine a near infrared glint value by subtracting the local low glint value from the near infrared reflectance value of the current pixel, and determine glint-corrected values for each of the wavelength bands by subtracting the local low glint value from each wavelength band reflectance value. A second pass can apply a near infrared band subtraction correction to all bands of the first bandset and the second bandset. The satellite imager can be the WorldView-2 or WorldView-3 system. | 10-22-2015 |
20150294443 | COMPUTATIONALLY EFFICIENT METHOD FOR IMAGE SEGMENTATION WITH INTENSITY AND TEXTURE DISCRIMINATION - An automatic method for depicting texture in a digital image is provided. A category is automatically assigned to each pixel in the digital image based on one of a set of brightness values associated with the pixel. Each of the brightness values corresponds to a range of intensities associated with the pixels in the digital image, and one of a set of texture values associated with the pixel. Each of the texture values corresponds to a range of differences in the value between the intensity of the pixel and the intensity of neighbors of the pixel. A shading level is automatically assigned to each of the pixels based on the categories. A processed image is automatically produced based on the shading levels, the processed image indicating the texture in the image. | 10-15-2015 |
20150239539 | Actively Controlled Curvature Robotic Pectoral Fin - A robotic mechanical fin, having a motor housing containing a plurality of rib rotation motors, rib spars, and a plurality of ribs, mechanically movable and communicatively coupled to the plurality of rib rotation motors and shafts, where the plurality of ribs are rotationally coupled to and actuated by the plurality of rib rotation motors and shafts. The mechanical fin further includes a flexible fin casing, within which the ribs reside, forming the complete actively controlled curvature robotic propulsion and steering apparatus. The mechanical fin is connected to a plurality of control electronics circuits and a computer processor programmed with actuation code that when executed by the computer processor causes automated actuation of simultaneous propulsion and steering maneuverability of the actively controlled curvature, robotic, mechanical fin. | 08-27-2015 |
20150220488 | System and method for interferometrically tracking objects using a low-antenna-count antenna array - A radio-frequency interferometry method for determining parameters of motion of a moving object from phase difference information from an antenna baseline formed of two antennas. At each of a plurality of observation events, compute a posterior probability density function from the phase differences from the baseline, separate the modes with a threshold value of probability density, and compute a probability of each mode. For each possible sequence of modes, determine a mode sequence probability as the product of the probabilities of each mode in that sequence, estimate a χ | 08-06-2015 |
20150215036 | System and Method for Testing the Speed of a Microwave Photonics System - A system testing the speed of a microwave photonic system, having a Mach Zehnder interferometer that includes a first arm with a photonic system to be tested and an amplifier arranged to amplify the output of the photonic system, and a second arm with an attenuator configured to match the output power of the amplifier, with at least one filter arranged at the output of the Mach Zehnder interferometer, the filter having a pass band that includes the center frequency of a continuous wave microwave signal applied to the Mach Zehnder interferometer arms. A continuous wave microwave signal is applied to the input of the Mach Zehnder interferometer, a signal is applied to only the second arm with the photonic link, and the output of the bandpass filter is measured with an oscilloscope and a microwave power detector. | 07-30-2015 |
20150147545 | ELASTOMERIC BILAYER ARMOR INCORPORATING SURFACE-HARDENED SUBSTRATES - An armor system is formed of a substrate including an underlying substrate layer of less hard material and including a thin layer of harder material at a first face of the substrate, and an elastomeric material layer positioned at the first face of the substrate. The increased hardness of the thin hard layer increases the penetration resistance of the armor by increasing the elastomer's contribution to penetration resistance. The properties of the substrate can be independently selected, allowing the use of substrates with lower hardness, increasing the armor's ballistic performance, and lowering the weight of the armor. | 05-28-2015 |
20150146748 | Pulse-Shaping Interferometer for Chirped-Pulsed Amplification Laser - A high power ultrashort chirped pulse amplifier laser system, with a chirped pulse amplifier laser module including an optical pulse stretcher, at least one optical power amplifier, and an optical pulse compressor, and a beam interferometer module in the optical path. The beam interferometer receives splits the pulse into at least two pulses, adds a time delay to at least one of the pulses and recombines the pulses to produce a temporally modulated pulse. The resulting modulated output pulse from the CPA laser module can have enhanced laser contrast due to greatly reduced subpicosecond pedestal in the immediate region of the peak pulse, or can have other desirable characteristics. | 05-28-2015 |
20150138348 | Device and Method for Multifunction Relative Alignment and Sensing - A tiltmeter-integrated two element relative alignment optical monitor relative alignment and contact sensing and can provide precise information regarding the nature of physical contact experienced by the objects being monitored. A computer monitor can display the information in real time, in an intuitive manner. This system can provide all the information with good resolution in a low-cost, easily installable package for both high energy physics applications and industrial uses. The system includes a projector unit mounted on one component, with a diffuse light source, a coded mask, and a lens, the projector aligned with a camera to receive the focused image. Shifts in the image of the mask indicate relative motion between the camera and the projector unit. A tiltmeter is affixed to either the camera or projector, to distinguish between image shifts due to translational movement and image shifts due to rotation or tilting. | 05-21-2015 |
20150115106 | SEPARATION SYSTEM AND BURN WIRE RELEASE MECHANISM FOR TETHERED SPACECRAFT - A tethered spacecraft has a first endmass and a second endmass with a telescoping stacer spring and a tether arranged between the endmasses. The spring is coiled around a center rod and initially contained within a housing, the spring being biased to push the first endmass away from the second endmass. The spring housing is affixed to the first endmass, a first end of the spring being affixed to the spring housing, and tether are affixed to spring at one end and to the second endmass at the other end. A pretensioned loop holds the endmasses abuttingly together, and a burnwire release mechanism cuts the loop to deploy the spring. Upon deployment, the spring extends to its full length to form a cylindrical boom, and the endmasses continue to move outward along the spring centerline until stopped by the tether. | 04-30-2015 |
20150102172 | Burn Wire Release Mechanism for Spacecraft and Terrestrial Applications - A burn wire release mechanism for a spacecraft or other system having two masses initially held together by a pretensioned loop, with a spring configured to push the masses apart. The burn wire release system includes at least one burn wire held in contact with the pretensioned loop material. When an electrical current flows through the burn wire, the wire heats up and severs the pretensioned loop, and the masses are pushed apart by the spring. | 04-16-2015 |
20150061182 | Method for forming cylindrical armor elements - Methods for forming armored glass cylinders suitable for improving resistance of armor to armor piercing rounds, explosively formed penetrators, or other threats. Cool a cylindrical glass or ceramic element to a temperature below that of a cylindrical casing, place the cylindrical glass or ceramic element into the cylindrical casing while the cylindrical glass or ceramic element is cool, and seal the cylindrical casing and allow the temperature of the cylindrical glass or ceramic element to rise, such that the cylindrical casing compresses the cylindrical glass or ceramic element. Alternately, heat a metal cylindrical casing, press glass or ceramic into the cylinder while the metal cylinder is at an elevated temperature, seal the metal cylindrical casing while metal cylindrical casinger is at an elevated temperature, and allow the the metal cylinder to cool, such that when cooled, the cylindrical casing will compress the glass in all directions. | 03-05-2015 |
20140321549 | Method and Apparatus for Displacement Determination by Motion Compensation with Progressive Relaxation - Motion estimator apparatus and methods are presented in which a fully constrained nonlinear system of equations combining forward and backward displaced frame difference equations with a plurality of displacement vector invariant equations is solved using the input data from two image frames without approximation and without any additional constraints or assumptions to obtain an estimated displacement field. Also presented is an adaptive framework for solving a system of motion estimation equations with an integer valued block size defining a number of node points within an image, the number of node points being less than or equal to a number of pixels within the image, and a cost function based on a nonlinear least-squares principle. A system of iteration equations for the motion field on node points is solved using an iterative technique, and a degree of over-constraint can be progressively relaxed by selectively reducing the block size during the iteration. | 10-30-2014 |
20140311293 | Preparation of Nanopowders of Reactive Metals via Reduction Under Sonication - A nanopowder and a method of making are disclosed. The nanopowder may be in the form of nanoparticles with an average size of less than about 200 nm and contain a reactive transition metal, such as hafnium, zirconium, or titanium. The nanopowder can be formed in a liquid under sonication by reducing a halide of the transition metal. | 10-23-2014 |
20140232101 | Magnetically Attracted Fluid Transfer System - A magnetic connection system with at least three components for connecting host and target systems. A first magnetic connector is attached to the host system, a second magnetic connector is attached to the target system; a third magnetic connector or puck is positioned between the first connector and the second connector. The first, second, and third connectors fit together with their magnets aligned, and the magnetic attraction is stronger between the puck and the target system connector than the puck and the host system connector. The system can transfer fuel, data, or electricity. In one example, the system transfers fuel from a fuel supply vessel to a target vessel with minimal human effort to attach the fuel connector components. The puck can have a conduit for fuel, data, or electricity that is centrally aligned with a receiving conduit in the target system connector. | 08-21-2014 |
20140184463 | Wide-Band Active Antenna System for HF/VHF radio - An active antenna system for receiving electromagnetic radiation at frequencies below 100 MHz. The system includes a vertical support mast; a front end electronics unit including an active balun, the front end electronics unit affixed to the support mast; two crossed-dipole antennas affixed oriented at about 90 degrees to each other, each crossed-dipole antenna having two arms formed of electrically conductive material, each arm having an isoceles triangular frame with an apex of the frame electrically connected to a feedpoint of the front end electronics unit, each arm also having a longitudinal member extending from the apex to the center of the base of the triangular shape and a cross member extending between sides of the triangular frame. The system can operate independently or as part of a long wavelength array for astronomical radio telescope applications. | 07-03-2014 |
20140105554 | Reconfigurable Liquid Metal Fiber Optic Mirror - A true time delay system for optical signals includes a hollow core optical waveguide, a droplet of reflective liquid metal disposed in the hollow core, and an actuator coupled to a first end of the waveguide to move the droplet longitudinally within the hollow core. In one example, the waveguide is a hollow core photonic bandgap fiber. In one example, the actuator is a pressure actuator that introduces or removes gas into the core. Light enters the optical fiber, is transmitted through the fiber toward the reflective surface of the droplet, and is reflected back through the fiber and exits at the same end of the photonic bandgap optical fiber that it entered. The fiber optic device can provide a continuously-variable optical path length of over 3.6 meters (corresponding to a continuously-variable true-time delay of over 12 ns, or 120 periods at a 10 GHz modulation frequency), with negligible wavelength dependence across the C and L bands. | 04-17-2014 |
20140080295 | Surface Doping and Bandgap Tunability in Hydrogenated Graphene - A method of introducing a bandgap in single layer graphite on a SiO | 03-20-2014 |
20140077036 | System and Method for Maneuver Plan for Satellites Flying in Proximity - A technique to assist guidance techniques for a free-flying inspection vehicle for inspecting a host satellite. The method solves analytically in closed form for relative motion about a circular primary for solutions that are non-drifting, i.e., the orbital periods of the two vehicles are equal, computes the impulsive maneuvers in the primary radial and cross-track directions, and parameterizes these maneuvers and obtain solutions that satisfy constraints, for example collision avoidance or direction of coverage, or optimize quantities, such as time or fuel usage. Apocentral coordinates and a set of four relative orbital parameters are used. The method separates the change in relative velocity (maneuvers) into radial and crosstrack components and uses a waypoint technique to plan the maneuvers. | 03-20-2014 |
20130342395 | SYSTEM AND METHOD FOR USING GPS INTERFEROMETRY TO DETERMINE ATMOSPHERIC CONDITIONS - A method and system for determining bending angle and/or the presence of atmospheric ducting on a moving vehicle, including receiving a first GPS signal from a first GPS satellite having an apparent position less than 10 degrees above the horizon; determining a true position of the first GPS satellite from information encoded in the first GPS signal; the first and second antennae receiving GPS signals from a plurality of GPS satellites located more than 15 degrees above the horizon; determining an orientation of a baseline between the first and second antennae based on a phase difference of a carrier frequency of the GPS signals from a plurality of GPS satellites positioned at least 15 degrees above the horizon; determining an apparent position of the first GPS satellite from the first GPS signal and the baseline orientation; and determining the bending angle by calculating the difference between the elevation angle of the apparent position and the elevation angle of the true position of the first GPS satellite. | 12-26-2013 |
20130294719 | Nonlinear Frequency Conversion in Nanoslab Optical Waveguides - A waveguide device for frequency mixing or conversion through birefringent phase matching, having a horizontal waveguide suspended above a substrate. The waveguide is formed of a zinc blende type III-V semiconductor material with a high nonlinear susceptibility. | 11-07-2013 |
20130099599 | Thermally Efficient Power Conversion Modules for Space Solar Power - A space solar power system that has sun-tracking curved reflectors, such as off-axis parabolic reflectors, a secondary reflector, and a power conversion module for converting the sunlight into microwave energy and transmit the energy to remote locations. The power conversion module can have a modular stepped conical shape, with additional radiator area configured in vertical sidewalls, horizontal radiator panels, or both. Hinged, fold-out units can house the microwave conversion electronics and the antenna for transmitting the microwave radiation to the remote ground station. | 04-25-2013 |
20130064666 | ACTIVE TWIST HOLLOW BEAM SYSTEM - A system for actively controlling the span-wise rotational twist of a hollow beam along its longitudinal axis, including a hollow beam structure having a leading edge and a trailing edge region, the beam being split along its length, an actuator arranged between split surfaces of the beam, the actuator adapted to move the split surfaces in a longitudinal direction relative to each other, inducing a twist in the beam. The hollow beam is affixed to an external structure at one or both ends, with only the zero warping displacement points of the beam being attached to the external structure, material or device. In one embodiment, the actuator is a plurality of solid blocks with high thermal expansion coefficients arranged between frames of the split surfaces of the beam, with alternating blocks being heated by resistance heaters to cause expansion in the spanwise longitudinal direction. | 03-14-2013 |
20130055825 | Recursive Hexapod System and Method for Multiaxial Mechanical Testing - A recursive hexapod testing machine for mechanical testing of deformable material specimens under six degrees of freedom multiaxial loading. The machine includes a fixed base, a movable base connected to the fixed base at by a hexapod arrangement of six linearly extendable actuator linkages, with an end of each linkages attached to the movable base and the other end of the linkage attached to the fixed base. Each actuator linkage includes a hydraulic cylinder and piston, a digitally-controlled electro-hydraulic servo-valve for actuating the hydraulic cylinder in response to a digital command string, a load cell in line between the piston and the universal joint attached to the movable base, a linear variable displacement transducer for measuring extension of the piston, and a magneto-resistive position transducer for measuring a position of the piston. The servo-valves extend each hydraulic cylinder a predetermined amount to effect a desired motion of the material specimen. | 03-07-2013 |
20120141080 | HEXAGONAL TUBE STACKING METHOD FOR THE FABRICATION OF HOLLOW CORE PHOTONIC BAND GAP FIBERS AND PREFORMS - The present invention is generally directed to a method of making a hollow-core photonic band gap preform from a specialty glass by pressing a specialty glass through a die to form a tube wherein the outer transverse shape of the tube is a hexagon, triangle, quadrilateral, or other polygon; stretching the tube to form a micro-tube with approximately the same outer transverse shape as the tube; stacking a plurality of micro-tubes into a bundle minimizing voids between adjacent micro-tubes and forming a central longitudinal void wherein the plurality of micro-tubes within the bundle comprise an inner structured region of the preform and the central void of the bundle comprises a hollow core in the preform; and inserting the bundle into a jacket tube. Also disclosed are the hollow-core photonic band gap preform and fiber formed by this method. | 06-07-2012 |
20120141079 | PHOTONIC BAND GAP FIBERS USING A JACKET WITH A DEPRESSED SOFTENING TEMPERATURE - The present invention is generally directed to a photonic bad gap fiber and/or fiber preform with a central structured region comprising a first non-silica based glass and a jacket comprising a second non-silica based glass surrounding the central structured region, where the Littleton softening temperature of the second glass is at least one but no more than ten degrees Celsius lower than the Littleton softening temperature of the first glass, or where the base ten logarithm of the glass viscosity in poise of the second glass is at least 0.01 but no more than 2 lower than the base ten logarithm of the glass viscosity in poise of the first glass at a fiber draw temperature. Also disclosed is a method of making a photonic bad gap fiber and/or fiber preform. | 06-07-2012 |
20120046863 | ORBIT COVARIANCE, ESTIMATION AND ANALYSIS TOOL - Improved orbit/covariance estimation and analysis (OCEAN) system and method are presented utilizing ground station observations collected from satellites passing overhead to estimate the positions, velocities, and other parameters of multiple satellites using weighted least squares (WLS) batch and/or Kalman filter smoothing (KFS) estimation algorithms to estimate each parameter, with or without a priori knowledge of the errors involved with each observed parameter. | 02-23-2012 |
20110305894 | COMPOSITE FOR CONTROLLED RELEASE OF SMALL MOLECULES IN AQUATIC ENVIRONMENTS - A composite material formulated for slow release of a small molecule in seawater includes a porous inorganic oxide framework and micelles embedded within the pores of the framework. The micelles include a surfactant and a small molecule, the surfactant being present in the composite material at no more than 80 parts by weight per 100 parts by weight inorganic oxide, the composite material being stable in seawater for releasing the small molecule over at least 20 days. | 12-15-2011 |
20110292485 | Integrated Angle of Arrival Sensing and Duplex Communication with Cats-Eye Multiple Quantum Well Modulating Retroreflector - A modulating retroreflector system includes a modulating retroreflector having a plurality of multiple quantum well modulator pixels and at least one transimpedance amplifier. The transimpedance amplifier receives a photocurrent generated by at least one of the plurality of modulator pixels. Each pixel is capacitively coupled to a current driver, which applies a high frequency digital electrical signal to the pixel when the voltage at the output of the transimpedance amplifier exceeds a threshold value. The modulated output of the retroreflector is reflected toward the source of the received optical beam. The system activates high frequency current drivers for only the illuminated pixels, eliminating the need for a separate angle of incidence sensor and reducing power requirements. A low frequency FSK signal can be superimposed on the DC optical interrogation beam and recovered as the unfiltered output of the transimpedance amplifier, to provide simultaneous bidirectional communication without a half-duplex communication protocol. | 12-01-2011 |
20110202204 | System and Method of Navigation based on State Estimation Using a Stepped Filter - Embodiments include systems and methods of navigation. In on embodiment, a plurality of position and motion states of a vehicle are estimated. The states may be estimated based on information received from a satellite receiver and an inertial measurement sensor. Estimating the states comprises performing one or more of a plurality of update steps at the rate that information is received from the satellite receiver. The states are estimated at a rate greater than the rate at which the update steps are performed. In one embodiment, the states are estimated using a stepped extended Kalman filter. | 08-18-2011 |
20110098445 | COVALENT ATTACHMENT OF PEPTIDES AND BIOLOGICAL MOLECULES TO LUMINESCENT SEMICONDUCTOR NANOCRYSTALS - A method for covalent attachment of peptides to luminescent quantum dots or other inorganic nanoparticles. The first step in the method involves functionalizing at least a portion of a surface of the quantum dot or nanoparticle with one or more materials having at least one reactive functional group therein. Subsequently, a peptide having a reactive functional group is reacted with at least some of the quantum dot or nanoparticle reactive functional groups to covalently bond at least some of the peptide to the quantum dots or nanoparticles. Modifications of the basic method are disclosed which provide methods allowing customized fabrication of quantum dots having a variety of different functional properties and combinations of functional properties. Also disclosed are quantum dots and nanoparticles made by the methods of the present invention. | 04-28-2011 |
20110054202 | HEXAFLUORODIMETHYLCARBINOL TERMINATED THIOLS - A hexafluorodimethylcarbinol terminated compound, method of making it, and a composition of matter are disclosed. The compound may have the formula (CF | 03-03-2011 |
20110051217 | High Performance Chirped Electrode Design for Large Area Optoelectronic Devices - An electro-optic device with a doped semiconductor base and a plurality of pixels on the semiconductor base. Pixels include oppositely doped semiconductor layer and a top electrode formed on the oppositely doped semiconductor layer. The top electrode has a grid pattern with at least one busbar and a plurality of fingers extending from the busbar, and spacing between the fingers decreases with distance from the bondpad along the busbar. Each pixel can also include a multiple quantum well formed on the semiconductor base. The top electrode shape produces an approximately uniform lateral resistance in the pixel. An embodiment is a large area modulator for modulating retro-reflector systems, which typically use large area surface-normal modulators with large lateral current flow. Uniform resistance to each part of the modulator decreases location dependence of frequency response. A chirped grid electrode balances semiconductor sheet resistance and metal line resistance components of the series resistance. | 03-03-2011 |
20110046345 | Methods for preparing linked peptide rings and peptide nanotubes obtained thereby - Peptide nanotube polymers and methods of making such are disclosed. The peptide nanotube polymers comprise of alternating monomers of the first peptide ring and monomers of the second peptide ring covalently bonded to one another via a linker, and can be functionalized. The described peptide nanotube polymers can enjoy the combined properties of healing and toughness, self-reporting, and tunability and actuation. | 02-24-2011 |
20110044575 | Miniature Fiber Optic Temperature Sensors - An intensity-based fiber optic temperature sensor having a fiber probe with a multimode transmit/receive fiber, a reflector spaced apart from the end of the fiber, and a housing affixed at its ends to the fiber probe and reflector, the housing having a larger or smaller thermal expansion coefficient than those of the fiber probe and reflector. Temperature changes cause a change in the gap distance between the fiber end and the reflector, changing the amount of reflected light coupled into the optical fiber. Temperature sensors can also have a fiber probe with two or more multimode receiving fibers surrounding a transmitting fiber. Other temperature sensors include a fiber probe with a multimode transmitting fiber, a reference multimode receiving fiber and a sensing multimode receiving fiber for reducing noise effects. | 02-24-2011 |
20110027388 | Cobalt Hexammine as a Potential Therapeutic Against HIV and/or Ebola Virus - Hexaamminecobalt(III) chloride, also called Cohex, reduces the extent of viral infection, including difficult to treat infections caused by Ebola virus and HIV. Disclosed are methods for treating a viral infection, comprising administering to a patient a cobalt(III) hexammine compound in an amount effective to reduce an extent of a viral infection. Also disclosed are kits for delivery of a cobalt(III) hexammine compound by injection. | 02-03-2011 |
20100319381 | Body Armor Suite Cooling System - A body cooling system is provided for utilization with a protective suit worn by a person. The cooling system includes an external air flow source that produces an air flow and blows it in free atmosphere towards an evaporative cooling apparatus. A fluid volume flows from the cooling apparatus to a conduit contained in an undersuit worn under the protective overcoat. A pump circulates fluid through the conduit. The undersuit includes both an envelope, surrounding an outer surface of the conduit, and a cloth layer, situated closest to the skin, to aid in a transfer of heat from a body to the fluid flowing in the conduit. The evaporative cooling apparatus can include a radiator body having finger-like projections extending therefrom. A fluid channel is formed within the evaporative cooling apparatus for egress of the heated fluid carried away from the undersuit. | 12-23-2010 |
20100317884 | POLYMERIZABLE SULFONATE IONIC LIQUIDS AND LIQUID POLYMERS THEREFROM - Disclosed is a new ionic liquid monomer salt and methods of is synthesis and polymerization. The ionic liquid monomer salt is prepared by mixing equimolar amounts of an amine, such as tris[2-(2-methoxyethoxy)-ethyl]amine and an acid functionalized polymerizable monomer, such as 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS), which is stirred at ambient temperature until salt formation is complete. Also disclosed is a new ionic liquid polymer salts and method for making the same. The synthesis of AMPS-ammonium salt polymer is accomplished by adding 2,2′-azobisisobutyronitrile (AIBN) to the ionic liquid monomer salt and heating the homogeneous melt at 70° C. for 18 hr. | 12-16-2010 |
20100316231 | System and Method for Determining Vector Acoustic Intensity External to a Spherical Array of Transducers and an Acoustically Reflective Spherical Surface - A system and computer implemented method for determining and displaying vector acoustic intensity fields based on signals from a rigid spherical array of acoustic sensors within a volume external to the array. The method includes a propagator with a ratio of Green's functions for the location within the volume and for the spherical array radius, and a Tikhonov regularization filter that uses the Morozov discrepancy principle on the measured noise variance and Fourier coefficients of the measured partial pressures with respect to reference accelerometer or microphone measurements. | 12-16-2010 |
20100314578 | Metal-Based Nanoparticles and Methods for Making Same - The present invention is directed to a method for producing novel metal nanoparticles and nanomaterials. The method involves mixing one or more metal halide starting materials, one or more lithium reducing agent and one or more solvents. In an exemplary embodiment, the resultant metal nanoparticles are substantially free from impurities and have a novel porous and substantially hollow structure. | 12-16-2010 |
20100314008 | Sonochemically Mediated Preparation of Nanopowders of Reactive Metals - A nanopowder and a method of making are disclosed. The nanopowder may be in the form of nanoparticles with an average size of less than about 200 nm and contain a reactive transition metal, such as hafnium, zirconium, or titanium. The nanopowder can be formed in a liquid under sonication by reducing a halide of the transition metal. | 12-16-2010 |
20100311025 | Material Formulations for Human Tissue Simulation - A gel formulation for use as simulated tissue for ballistic testing includes a mixture of gelatin, a glycol, such as ethylene glycol, and water. The gel may be formed in a mold to simulate a body part, such as an organ. A ratio of gelatin to glycol may be varied, depending on the body part to be simulated. An anatomic model may be formed by incorporating simulated organs formed with different gelatin to glycol ratios. | 12-09-2010 |
20100309055 | METHOD AND APPARATUS FOR PASSIVELY LOCATING RADAR EMISSIONS FROM TRANSMITTERS - Systems and methods are presented for passive location of transmitters in which two or more receivers time stamp received signals from target transmitters and the time stamped data for each target signal of interest is isolated to identify a peak power time of arrival for the signal at each transmitter from which differential scan observation values are derived, and for each signal of interest a line of position curve is computed based on the differential scan observation value and corresponding receiver locations, and for each signal of interest an estimated target transmitter location is determined based on an intersection of two corresponding line of position curves. | 12-09-2010 |
20100271280 | DOUBLE BALUN DIPOLE - A double balun dipole antenna element includes a dielectric substrate having a first surface and an opposing second surface, a pair of coplanar Marchand baluns positioned in a mutually antiphase configuration on the first and second surfaces, and at least one feed line connected to the pair of Marchand baluns. A doubly polarized antenna element includes a pair of orthogonally interleaved double balun dipole antenna elements, which can be further configured into an array of such antenna elements. | 10-28-2010 |
20100266289 | Even-Order Harmonic Cancellation and Increased RF Gain Using Dual-Output Mach-Zehnder Modulator with Two Wavelength Input - A method and system for processing analog optical signals to produce a single RF output free from even-order harmonic distortion. Two analog optical signals of different wavelengths λ | 10-21-2010 |
20100230547 | Stop-rotor rotary wing aircraft - Systems and methods for transitioning an aircraft between helicopter and fixed wing flight modes are provided. In one embodiment, an aircraft comprises a plurality of wings each having a spar and a flap; a flap actuator configured to move the flap with respect to the spar; and a center section rotatably coupled to each spar. The center section includes at least one spar actuator configured to rotate at least one of the wings about a rotational axis of the spar when the aircraft transitions between helicopter and fixed wing flight modes. | 09-16-2010 |
20100188725 | High Performance Chirped Electrode Design for Large Area Optoelectronic Devices - An electro-optic device with a doped semiconductor base and a plurality of pixels on the semiconductor base. Pixels include oppositely doped semiconductor layer and a top electrode formed on the oppositely doped semiconductor layer. The top electrode has a grid pattern with at least one busbar and a plurality of fingers extending from the busbar, and spacing between the fingers decreases with distance from the bondpad along the busbar. Each pixel can also include a multiple quantum well formed on the semiconductor base. The top electrode shape produces an approximately uniform lateral resistance in the pixel. An embodiment is a large area modulator for modulating retro-reflector systems, which typically use large area surface-normal modulators with large lateral current flow. Uniform resistance to each part of the modulator decreases location dependence of frequency response. A chirped grid electrode balances semiconductor sheet resistance and metal line resistance components of the series resistance. | 07-29-2010 |
20100144057 | Fluidic Force Discrimination - This invention describes a method of using controlled fluidic forces to improve the performance of a biochemical binding assay where a target molecule is captured by specific molecular recognition onto a substrate surface with an affinity coating, and then labeled with a detectable micrometer-scale particle using a second specific molecular recognition reaction with the target. By using specific ranges of label sizes and laminar flow conditions, controlled fluidic forces can be applied to the label particles in order to selectively remove molecules bound to a surface according to their binding strength, and thereby increase the ratio of specifically bound labels to more weakly attached non-specifically bound labels. This method can be used with a wide variety of label types and associated detection methods, improving the sensitivity and selectivity of a broad range of binding assays. | 06-10-2010 |
20100139406 | Micromechanical chemical sensors with multiple chemoselective resonant elements and frequency division multiplexed readout - Micro-opto-mechanical chemical sensors and methods for simultaneously detecting and discriminating between a variety of vapor-phase analytes. One embodiment of the sensor is a photonic microharp chemical sensor with an array of closely spaced microbridges, each differing slightly in length and coated with a different sorbent polymer. The microbridges can be excited photothermally, and the microbridges can be optically interrogated using microcavity interferometry. Other actuation methods include piezoelectric, piezoresistive, electrothermal, and magnetic. Other read-out techniques include using a lever arm and other interferometric techniques. | 06-10-2010 |
20100088308 | System and Method for Automated Discovery, Binding, and Integration of Non-Registered Geospatial Web Services - A method and computer system for identifying internet web pages containing documents that comply with a predetermined XML schema. The method includes searching the internet with a search engine for web pages using initial search terms and identifying a first set of HTTP URLs, web crawling at least the first set of HTTP URLs to identify additional HTTP URLs, appending a query to the identified URLs, and evaluating the responses to the query to determine which responses comply with the predetermined XML schema. The XML schema can be a Web Mapping Services schema. The system can store responses that comply with the XML schema in a database of servers, periodically check the database for validity, and convert the map requests for map servers in the database to a GIDB Portal Interface API. | 04-08-2010 |
20100032906 | PNEUMATIC STEEL TARGET SYSTEM - Disclosed is a pneumatically operated steel target system that incorporates a polymer-like mannequin molded to an AR500 abrasive resistant material with a 500 Brinell (460-540) rating, which can be clothed for any event, allowing users to practice on human-like targets as opposed to a target with no features where the user's real-life training would be reduced. The target system has a protective chest plate proportionately angled at approximately 12 degrees from center to deflect bullet fragmentations downward and away from the shooter. | 02-11-2010 |
20100029921 | Trioxyethylene Gold Nanoclusters Functionalized with a Single DNA - A method of making a nanoclusters functionalized with a single DNA strand comprising the steps of providing nanoclusters, combining said nanoclusters with thiolated DNA, incubating said nanoclusters and thiolated DNA mixture, combining said mixture with a solution comprising ethanol and dichloromethane; separating said mixture into an aqueous phase and an organic phase, mixing said aqueous phase with a solution comprising dicholormethane and NaCl, and separating the mixture into an aqueous phase and an organic phase; wherein said organic phase comprises said nanoclusters functionalized with a single DNA strand. Further, provided is a nanocluster functionalized with a single DNA strand comprising a nanocluster, said nanocluster being functionalized with a single DNA strand, said DNA strand having a length of about 10 to about 50 bases. | 02-04-2010 |
20090263144 | Linearized Phase Modulated Analog Optical Links - A phase-modulated analog optical link that uses parallel interferometric demodulation to mitigate the dominant intermodulation distortion present in the link. A receiver for demodulating phase modulated optical signals includes a splitter dividing the phase modulated signal into parallel optical paths, each optical path having an asymmetrical interferometer, the time delays of the interferometers being unequal, and each optical path includes a photodiode optically connected to an output of the interferometer. Outputs of the photodiodes enter a hybrid coupler. Alternatively, outputs of the interferometer enter a balanced photodetector. A phase shifter or time delay element can be included in one optical path to ensure inputs to the coupler or balanced photodetector have the correct phase. The input power to the parallel optical paths is split in a ratio that balances the third-order distortion in the output photocurrent. | 10-22-2009 |
20090239070 | COATING OF ORGANIC FIBERS WITH SILOXANE-CARBORANE POLYMERS - A fiber of linear polymer coated with a siloxane-carborane polymer or a thermoset or ceramic made therefrom. An organic fiber coated with a siloxane-carborane polymer or a thermoset or ceramic made therefrom and a surfactant. An organic fiber coated with a siloxane-carborane polymer made from a hydrosilation reaction of a siloxane-carborane compound containing at least two unsaturated carbon-carbon bonds and a silane compound or a thermoset or ceramic made therefrom. A method of coating a fiber by contacting a fiber to an aqueous solution of a siloxane-carborane polymer and a surfactant or to a solution of a siloxane-carborane polymer in a non-halogenated organic solvent. A method of contacting a fiber to a solution of a siloxane-carborane polymer, drying the coating to a temperature that does not change the polymer to a thermoset or ceramic, and using the dried, coated fiber in a process that requires that the fiber be flexible. | 09-24-2009 |
20090238964 | COATING OF ORGANIC FIBERS WITH SILOXANE-CARBORANE POLYMERS - A fiber of linear polymer coated with a siloxane-carborane polymer or a thermoset or ceramic made therefrom. An organic fiber coated with a siloxane-carborane polymer or a thermoset or ceramic made therefrom and a surfactant. An organic fiber coated with a siloxane-carborane polymer made from a hydrosilation reaction of a siloxane-carborane compound containing at least two unsaturated carbon-carbon bonds and a silane compound or a thermoset or ceramic made therefrom. A method of coating a fiber by contacting a fiber to an aqueous solution of a siloxane-carborane polymer and a surfactant or to a solution of a siloxane-carborane polymer in a non-halogenated organic solvent. A method of contacting a fiber to a solution of a siloxane-carborane polymer, drying the coating to a temperature that does not change the polymer to a thermoset or ceramic, and using the dried, coated fiber in a process that requires that the fiber be flexible. | 09-24-2009 |
20090220790 | Spinel Nanopowders - Disclosed is a method of producing a spinel powder comprising preparing a double-hydroxide precursor precipitate then treating the precipitate with a washing agent, wherein said washing agent replaces water in said precipitate, then drying the precipitate to produce a hydroxide powder. The hydroxide powder is calcinated to produce an spinel powder that is essentially free of agglomeration. | 09-03-2009 |
20090211379 | Method and Apparatus for Fluid Sampling - This invention is directed to a method and system for particle entrained fluid sampling. The invention is specifically directed to a system capable of sampling a high pressure and/or high flow rate fluid flow system using a means for applying pressure or suction to the fluid sample in the fluid sampling system operatively connected to a sample extractor and a sample analysis device. The means for applying pressure or suction is adjustable to provide control over the sample flow in the fluid sampling system. The fluid sampling system of the present invention may be particularly applicable to monitoring the condition of hydraulic and lubrication systems. | 08-27-2009 |
20090208372 | SHEATH FLOW DEVICE AND METHOD - A sheath flow system having a channel with at least one fluid transporting structure located in the top and bottom surfaces situated so as to transport the sheath fluid laterally across the channel to provide sheath fluid fully surrounding the core solution. At the point of introduction into the channel, the sheath fluid and core solutions flow side by side within the channel or the core solution may be bounded on either side by the sheath fluid. The system is functional over a broad channel size range and with liquids of high or low viscosity. The design can be readily incorporated into microfluidic chips without the need for special manufacturing protocols. | 08-20-2009 |
20090196543 | Fiber Optic Acceleration and Displacement Sensors - A fiber optic sensor for detecting acceleration or displacement includes a fiber optic probe with a multimode transmitting optical fiber, a multimode receiving optical fiber and a edge reflector spaced apart from the fiber probe. The reflector moves in a transverse direction substantially normal to the longitudinal axis of the fiber optic probe, so the amount of light received by the receiving fiber indicates a relative acceleration or a relative displacement of the reflective surface with respect to the fiber probe in the transverse direction of motion of the edge of the reflector. The reflector can be mounted on a cantilever beam. The sensor can have one transmitting fiber, two receiving fiber, and a reflector with two edges, each edge partially covering one of the receiving fibers. A triaxial sensor system has at least two two-fiber sensors. | 08-06-2009 |
20090196511 | SYSTEM, METHOD, AND APPARATUS FOR CLUSTERING FEATURES USING AN EXPANSION SHAPE - A computer-implemented method, system, computer-readable medium, and apparatus for identifying a boundary of a cluster in a bitmap, the bitmap having at least one initially set bit, for applying an expansion shape to each of the initially set bits in the bitmap and identifying vertex bits on the boundary of the cluster formed by at least one expansion shape. | 08-06-2009 |
20090173629 | MULTIPARAMETER SYSTEM FOR ENVIRONMENTAL MONITORING - A miniature, lightweight, inexpensive, environmental monitoring system containing a number of sensors that can simultaneously and continuously monitor fluorescence, absorbance, conductivity, temperature, and several ions. Sensors that monitor similar parameters can cross-check data to increase the likelihood that a problem with the water will be discovered. | 07-09-2009 |
20090153396 | System and Method for Using GPS Interferometry to Determine Atmospheric Conditions - A method and system for determining a bending angle and/or the presence of atmospheric ducting. An array of antennas is used in order to form an interferometer. The interferometer receives signals from GPS satellites and uses the index of infraction in order to determine a bending angle of the GPS signals and/or the presence of atmospheric ducting. | 06-18-2009 |
20090121476 | Microfluidic Bus for Interconnecting Multiple Fluid Conduits - The present invention relates to a device for interconnecting multiple fluid conduits in a microfluidic environment. The device is typically used to make a low-pressure fluidic connector system for microfluidic applications. A male connector component containing an array of conical nozzles having through holes is connected to fluidic tubing. A female connector component supports an elastomer membrane having an array of receptacles complementary to the nozzles. Through holes through the female connector and membrane are also connected to fluidic tubing. The conical nozzles are aligned with membrane receptacles and a connecting mechanism evenly distributes a compressive force between the male and female components to establish a fluid-tight seal between the nozzles and the membrane. | 05-14-2009 |
20090069484 | AROMATIC ETHER AND ALKYNYL CONTAINING PHTHALONITRILES - Compounds having the formulas below. R is an aromatic-containing group. Each M is an alkali metal. Each m is a positive integer. The value of n is a positive integer. The value p is 0 or 1. If p is 0 then n is 1. A thermoset made by curing a composition containing the below phthalonitrile monomers. | 03-12-2009 |
20090048123 | Reagentless and Reusable Biosensors with Tunable Differential Binding Affinities and Methods of Making - The biosensor comprises a modular biorecognition element and a modular flexible arm element. The biorecognition element and the flexible arm element are each labeled with a signaling element. The flexible arm contains an analog of an analyte of interest that binds with the biorecognition element, bringing the two signaling elements in close proximity, which establishes a baseline fluorescence resonance energy transfer (FRET). When an analyte of interest is provided to the biosensor, the analyte will displace the analyte analog, and with it, the signaling module of the modular flexible arm, causing a measurable change in the FRET signal in a analyte concentration dependent manner. The modularity of different portions of the biosensor allows functional flexibility. The biosensor operates without additional development reagents, requiring only the presence of analyte or target for function. | 02-19-2009 |
20090018273 | POLYHEDRAL OLIGOMERIC SILSESQUIOXANE AND CARBORANE CONTAINING NETWORK POLYMERS - A thermoset and method of making such by crosslinking a mixture of a polyhedral oligomeric silsesquioxane having pendent siloxane groups or unsaturated carbon bonds and a siloxylcarborane compound having unsaturated carbon bonds. | 01-15-2009 |
20090016161 | Method and System for Real-time Automated Change Detection and Classification for Images - A computer based system and method for real-time display of co-registered historical and current side scan sonar imagery during a side scan sonar survey. Embodiments also include modules for detection of clutter in the current imagery, identification of features, extraction of snippets, filtering based on predetermined size and shape parameters, and determination if a current feature is the same as a previously identified contact from historical imagery. | 01-15-2009 |
20090014599 | Convertible aerial vehicle with contra-rotating wing/rotors and twin tilting wing and propeller units - A micro aerial vehicle can be converted during flight between a fixed wing flight mode and a rotary wing flight mode. The canard design micro aerial vehicle includes a fuselage, two tiltable propellers and airfoils arranged at a forward portion of fuselage, a pair of coaxial drive shafts positioned aft of the tiltable propeller and airfoil arranged for contra-rotation, a stop rotor mechanism, and a pair of wing panels, each of the wing panels attached to one of the coaxial drive shafts. The wing panels act as contra-rotating rotor blades in the rotary wing flight mode, and act as fixed wing panels in the fixed wing mode. | 01-15-2009 |
20090009853 | Photoconductive Metamaterials with Tunable Index of Refraction and Frequency - Materials and structures whose index of refraction can be tuned over a broad range of negative and positive values by applying above band-gap photons to a structure with a strip line element, a split ring resonator element, and a substrate, at least one of which is a photoconductive semiconductor material. Methods for switching between positive and negative values of n include applying above band-gap photons to different numbers of elements. In another embodiment, a structure includes a photoconductive semiconductor wafer, the wafer operable to receive above band-gap photons at an excitation frequency in an excitation pattern on a surface of the wafer, the excitation patterns generating an effective negative index of refraction. Methods for switching between positive and negative values of n include projecting different numbers of elements on the wafer. The resonant frequency of the structure is tuned by changing the size of the split ring resonator excitation patterns. | 01-08-2009 |
20080296710 | Photoconductive Metamaterials with Tunable Index of Refraction - Materials and structures whose index of refraction can be tuned over a broad range of negative and positive values by applying above band-gap photons to a structure with a strip line element, a split ring resonator element, and a substrate, at least one of which is a photoconductive semiconductor material. Methods for switching between positive and negative values of n include applying above band-gap photons to different numbers of elements. In another embodiment, a structure includes a photoconductive semiconductor wafer, the wafer operable to receive above band-gap photons at an excitation frequency in an excitation pattern on a surface of the wafer, the excitation patterns generating an effective negative index of refraction. Methods for switching between positive and negative values of n include projecting different numbers of elements on the wafer. The resonant frequency of the structure is tuned by changing the size of the split ring resonator excitation patterns. | 12-04-2008 |
20080295210 | EXTREMITY ARMOR - Body armor for ballistic protection of a user's extremities preferably comprising right and left arm protection units and/or right and left leg protection units. The units include a ballistic protection material which preferably covers most of the user's upper arm, elbow region, lower arm, shoulder, upper leg, knee region, and lower leg except for ventilation zones preferably located on the inner portion of the upper arm and the inner part of the upper leg. The back of the knee is preferably covered by a protective flap. | 12-04-2008 |