| Patent Number |
Title Of Patent |
Date Issued |
| 5905205 |
Biaxial testing apparatus |
May 18, 1999 |
| A new apparatus and method for applying a biaxial load to a flat plate test specimen is disclosed. A rhombus-shaped four-bar linkage is attached at one vertex to a fixed attachment point and a uniaxial tensile force is applied to the opposite vertex. The test specimen is placed inside th |
| 5904062 |
Equal channel angular extrusion of difficult-to-work alloys |
May 18, 1999 |
| A method is described for producing homogeneous wrought microstructure during equal channel angular extrusion of difficult-to-work high temperature alloys that exhibit a high degree of flow softening at hot-working temperatures, wherein flow non-uniformities are minimized by impartin |
| 5903473 |
Radar scattering netting simulation |
May 11, 1999 |
| A computer implemented method and system for preparing a description of an electromagnetic scattering net approximating an actual scattering net for analyzing effect on sensor imagery is comprised of: (1) inputting a basic tent configuration comprising a number of tent poles, spacing of |
| 5903390 |
Two port nonlinear joint transform correlator |
May 11, 1999 |
| An all optical photorefractive holographic joint transform correlator provides a first correlation plane output port using two-beam coupling, and a second correlation plane output port employing four-wave mixing. With appropriate input beam intensity ratios, the first port output is |
| 5902728 |
Diazodenitrification in manufacture of recombinant bacterial biosensors |
May 11, 1999 |
| E. coli strain JM109 transfected with nitrate reductase gene containing plasmid pIC20RNR1.1 produces diazoluminomelanin when cultured in a medium containing nitrate, 3-amino-L-tyrosine and luminol, under suitable metabolic conditions. |
| 5900986 |
Columnar focal lens |
May 4, 1999 |
| A lens is described that produces a columnar focus comprised of a continuum of focal points at varying distances from the principal plane of the lens aligned along the axis of the lens. The lens refracts an incident wavefront with a focal length that is dependent upon the radial distance |
| 5898261 |
Fluid-cooled particle-beam transmission window |
April 27, 1999 |
| High fluence charged-particle beams are generated in a vacuum or near vacuum environment. To use these beams in an atmospheric pressure environment, they must pass through some form of transmission window between the two environments. To date, thin single metal foils have been used f |
| 5898246 |
Control of reluctance dynamoelectric machine cooling fluid |
April 27, 1999 |
| A cooling arrangement for a high speed open rotor reluctance motor/generator apparatus of the type finding combination use in aircraft applications for engine starting and electrical energy generation in both normal and auxiliary power unit operating conditions. The cooling arrangeme |
| 5895927 |
Electro-optic, noncontact, interior cross-sectional profiler |
April 20, 1999 |
| An electro-optic, noncontact, interior cross-sectional profiler (a "probe") and method of using the probe to determine the physical characteristics, such as interior dimensions, of an interior surface of a tubular structure, such as pipe, tubing, gun barrels and the like. The probe u |
| 5894987 |
Variable area inlet for vehicle thermal control |
April 20, 1999 |
| A variable area inlet structure for a vehicle utilizing ram air for coolant is described which comprises a variable area inlet device in the ram air inlet in the form of a butterfly valve, damper, shutter, or similar structure, a temperature sensor in thermal contact with a component wit |
| 5894035 |
Method of forming tubular inclusions in single crystal alumina |
April 13, 1999 |
| A method of making a mechanically stable, fiber having an inclusion of ion-conducting material which includes the steps of coating a single-crystal or polycrystalline .alpha.-alumina fiber with a zirconia or a hexaluminate precursor, optionally heating the coated fiber to dry the coa |
| 5892859 |
Integrated circuit compatible electro-optic controlling device for high data rate optical signal |
April 6, 1999 |
| A commercially attractive arrangement for monolithic integration of a nonlinear optical polymer transverse electro-optic device for high data rate optical signals on an electronic integrated circuit chip. The invention provides for conductive polymer sheet layers immediately adjacent |
| 5892786 |
Output control of vertical microcavity light emitting device |
April 6, 1999 |
| An improved intracavity sensor based output power control for microcavity light emitting devices. An improved phototransistor transducer is both configured and physically disposed so that it passively transmits the spurious optical energy output of the microcavity light emitting device |
| 5776256 |
Coating chamber planetary gear mirror rotating system |
July 7, 1998 |
| A optical surface is mounted on a mirror rotating system having a carousel therein having gears which rotates said optical surface in a circular path while the optical surface itself rotates about an axis. The radius between the mirror support and the planetary gear is adjustable. The sy |
| 5775806 |
Infrared assessment system |
July 7, 1998 |
| A process and system for determining the integrity of an object by analyzing its dynamic heat properties is disclosed. A properly functioning reference object is heated and an infrared camera is positioned above the object. A digital computer collects the infrared images of the object an |
| 5774490 |
Diode-pumped Tm: YAG/HBr four micron laser system |
June 30, 1998 |
| An HBr laser is pumped by a slave laser power oscillator which excites the (2,0) absorption band of the HBr laser, to cause it to lase around four microns. A tunable master oscillator, which is frequency locked to an HBr reference cell, seeds the slave oscillator and maintains lock-on to |
| 5773787 |
Plasma-gun voltage generator |
June 30, 1998 |
| The Plasma-Gun Voltage-Generator (PVG) uses a pulsed plasma-flow to displace magnetic flux, thereby inducing high voltages across multi-turn coils. Typical operating parameters are voltages of 0.5 to 1 MV, pulsetimes in the microsecond regime and output impedances in the few Ohm rang |
| 5770737 |
Asymmetrical dyes with large two-photon absorption cross-sections |
June 23, 1998 |
| A two-photon absorbing chromophore of the formulawherein Ar is selected from the group consisting of ##STR1## D is selected from the group consisting of ##STR2## and A is selected from the group consisting of ##STR3## wherein R.sub.1 and R.sub.2 are alkyl groups having 8 to 1 |
| 5770127 |
Carbon or graphite foam reinforced composites |
June 23, 1998 |
| A new apparatus and method for making a carbon or graphite reinforced composite is described. A rigid carbon foam preform is placed within a sealed flexible bag. A vacuum is created within the bag. Matrix resin is introduced into the bag, through an inlet valve, and is amply impregnated |
| 5770121 |
Solid state coagulation of optical quality polymer thin films |
June 23, 1998 |
| A method for preparing optical quality, thin films of polymers and co-polymers, as well as blends of such polymers or co-polymers with flexible polymers and co-polymers which comprises(a) preparing a solution of the polymer or co-polymer or blend in a suitable solvent;(b) forming a film |
| 5767513 |
High temperature octopole ion guide with coaxially heated rods |
June 16, 1998 |
| A high-temperature octopole/collision apparatus features coaxially heated rf emitting octopole rods coacting with a collision oven cell. The rods are maintained at a slightly higher temperature than the oven cell to prevent condensation of the sample on the poles and to ensure a well |
| 5767413 |
Peripheral gauge |
June 16, 1998 |
| A gauge for measuring a dimensional change, such as a change in the periphery of a test object, is an elastomeric tube filled with an electrically conductive fluid such as mercury. The gauge can be formed into a loop around the test object. Thereafter, any change in, e.g. the circumf |
| 5760735 |
Phase stationary test body |
June 2, 1998 |
| An antenna test body for providing azimuth and elevation rotation having a rotating cylinder contained within said test body and an arc sector under the test body capable of providing elevation rotation. The test body provides a phase stationary center point under rotation of both azimut |
| 5760530 |
Piezoelectric tactile sensor |
June 2, 1998 |
| A two-dimensional, electrically-multiplexed robotic tactile sensor realized by capacitively coupling a piezoelectric film such as a polyvinylidene fluoride (PVDF) polymer film to a monolithic silicon integrated circuit. The disclosed integrated circuit incorporates 64 identical sensor |
| 5760496 |
Inverse-pinch voltage pulse generator |
June 2, 1998 |
| A first magnetic flux field is produced in the vicinity of a generally cylindrical pulse generating coil arrangement and a plasma is abruptly and radially displaced outwardly toward the coil arrangement, which in turn displaces the first magnetic flux field to a sufficient degree to enab |
| 5760327 |
Superconducting radar decoys and camouflage |
June 2, 1998 |
| A high temperature superconducting material is incorporated onto a vehicle for the purpose of reflecting electromagnetic waves while superconducting. The vehicle may be chaff, a decoy, an electronic pod, a satellite, or a space vehicle. Heating and/or cooling is used to control the s |
| 5759632 |
Ceramic composite |
June 2, 1998 |
| An improved method for producing a fiber-reinforced ceramic composite having a monazite interface between the reinforcing fiber and the ceramic matrix, which comprises the steps of coating each filament in a continuous fiber tow with an aqueous sol that forms monazite after high temperat |
| 5755404 |
Forced air aircraft de-icer system |
May 26, 1998 |
| A system for the forced air de-icing of aircraft is described which includes a source of pressurized air and an axisymmetric, high momentum focused air jet nozzle having an inlet of diameter D and an outlet of diameter d with an axisymmetric contour therebetween defined by a convergi |
| 5752773 |
High temperature rolling element bearing |
May 19, 1998 |
| A novel rolling element bearing assembly comprises an inner race, an outer race, a plurality of rolling elements, and a carbon-carbon composite retainer. The carbon-carbon composite retainer is fabricated by providing a woven tube, cutting the woven tube into suitably sized rings, pierci |
| 5751238 |
Active corner reflector |
May 12, 1998 |
| An apparatus and method for providing small size, high gain corner reflection of radio frequency signals for use in military and commercial applications. Conventional corner reflector practice is combined with electronic amplifying reflection devices such as the superregenerative amp |
| 5748846 |
Neural engineering utility with adaptive algorithms |
May 5, 1998 |
| Neural Engineering Utility With Adaptive Algorithms (NEUWAA) is an artificial intelligence system for Automatic Test Equipment (ATE) which integrates various technologies in an adaptive fault-detection environment. Various technologies, other than normal ATE stimulus/reaction, includ |
| 5748657 |
High efficiency constant current laser driver |
May 5, 1998 |
| A constant current laser driver circuit that will drive a laser diode in a constant current mode from a 6 to 12 volt battery supply. The laser driver consists of two main sections. The first section converts the 12 volt input to a 2 volt output using ultra-low resistance power mosfets an |
| 5748653 |
Vertical cavity surface emitting lasers with optical gain control (V-logic) |
May 5, 1998 |
| The Vertical-cavity-surface-emitting Lasers with Optical Gain Control (V-LOGIC) form a family of integrated optical smart pixels for interconnect and signal processing applications. V-LOGIC devices consist of Vertical Cavity Surface Emitting Lasers (VCSELs) and In-Plane Lasers. (IPL) |
| 5748143 |
Adaptive post-doppler sequential beam processor |
May 5, 1998 |
| A signal processing system applies space-time adaptive processing ("STAP") to an airborne surveillance Doppler radar comprised of a single-channel, rotating antenna. The STAP substantially improves signal-to-interference-plus-noise ratio ("SINR"), thereby improving the detection of w |
| 5746846 |
Method to produce gamma titanium aluminide articles having improved properties |
May 5, 1998 |
| Gamma titanium aluminide alloys having the composition Ti-(45.5-47.5)Al-(0-3.0)X-(1-5)Y-(0.05-1.0)W, where X is Cr, Mn or any combination thereof, and Y is Nb, Ta or any combination thereof (at %), are treated to provide specific microstructures. To obtain duplex microstructures, the |
| 5742073 |
Superconducting weak link array switch |
April 21, 1998 |
| The present invention provides a superconducting switch which has a substrate base and a control line patterned thereon. A buffer layer is deposited on top of these and then a superconducting material is deposited and then patterned wherein the superconducting material forms a strip |
| 5742045 |
Apparatus using diode laser logic to form a configurable optical gate system |
April 21, 1998 |
| Configurable Optical Gates (COGs) are used to transmit and receive optical signals similar to an interconnect device as well as perform a logic function on those signals (they are smart pixels). COGs consist of a laser with an intracavity modulator, an integrated current source and one o |
| 5741376 |
High temperature melting niobium-titanium-chromium-aluminum-silicon alloys |
April 21, 1998 |
| High temperature melting niobium-titanium-chromium-aluminum-silicon alloys having a wide range of desirable microstructures, excellent microstructural and morphological properties, superior oxidation resistance at temperatures from 1000.degree. C. to 1500.degree. C., and good low tem |
| 5737913 |
Self-aligning quick release engine case assembly |
April 14, 1998 |
| An engine casing structure for a gas turbine engine or the like is described which comprises two substantially tubular shaped axially adjacent abutting casing portions and a rotatable clamping ring on one casing portion having a plurality of lugs which engage a corresponding pluralit |
| 5737192 |
Density improvement in integration modules |
April 7, 1998 |
| Chip-like stacks of thinned chips are mounted in wells etched into a substrate. A"chip-like" stack is a stack of chips, which in the aggregate have a height approximately equal to that of a single conventional chip. These chip-like stacks are mounted in a variety of packages. In a pr |
| 5736978 |
Tactile graphics display |
April 7, 1998 |
| A method for communicating graphic data such as plotted two-dimensional curves to a user such as a sight impaired person is disclosed. The disclosed arrangement uses haptic or tactile stimulation of a user's extremity such as is relied--upon in the Braille code fingertip communicatio |
| 5734466 |
Alignment, code and power test of airborne laser designators |
March 31, 1998 |
| This invention relates to laser guided weapon systems and in particular to boresighting a designator laser to a forward looking infrared (FLIR) sighting system that is at a wavelength other than that of the laser with sufficient accuracy, confirming adequate power level available for |
| 5734303 |
Microwave waveguide mode converter having a bevel output end |
March 31, 1998 |
| The present invention comprises a microwave mode convert having a cylindrical waveguide input. Attached to the waveguide input is a transition section which gradually changes from the elliptical or cylindrical waveguide input. The output section is also an elliptical waveguide. The o |
| 5734193 |
Termal shunt stabilization of multiple part heterojunction bipolar transistors |
March 31, 1998 |
| Structure and fabrication details are disclosed for AlGaAs/GaAs microwave HBTs having improved thermal stability during high power operation. The use of a thermal shunt joining emitter contacts of a multi-emitter HBT is shown to improve this thermal stability and eliminate "current-crush |
| 5729010 |
Night vision device localized irradiance attenuation |
March 17, 1998 |
| A night vision device enhancement wherein occurrence of a bright object in an input scene of the night vision device is precluded from adversely affecting reproduction of adjacent low radiance level portions of the input scene. By optically limiting or excluding bright object input scene |
| 5727016 |
Spatially coherent diode laser with lenslike media and feedback from straight-toothed gratings |
March 10, 1998 |
| In a surface emitting semiconductor laser, a variable index of refraction layer having an approximately parabolically shaped trough therein is positioned adjacent the active lasing region and a straight toothed second order diffraction grating coacts with the refraction layer to produce |
| 5723059 |
Fluid density adjustment for functional fluids |
March 3, 1998 |
| The dispersion of a solid material in a fluid is improved by modifying the density of the fluid to match the density of the solid material. The method of the present invention comprises the addition of about 1 to 25 weight percent of a saturated oligomer of at least one halocarbon to a |
| 5720051 |
Inflatable multiple cell helmet liner to enhance fit, security and comfort |
February 24, 1998 |
| A new inflatable liner for an aircraft or other protective helmet is disclosed. The liner includes a multiplicity of separate inflatable cells adjacently arranged in the general shape of a cap or of the inside of a helmet. Each inflatable cell includes a separate inflation tube. The |
| 5712709 |
Haze and transmissivity measurements |
January 27, 1998 |
| A portable and potentially computer-controlled aircraft windscreen or the like test arrangement for quantitative determination of haze and energy transmissivity characteristics in the windscreen material. The test arrangement includes two portable transducer enclosures which lend to |
| 5709469 |
Process for testing integrity of bonds between epoxy patches and aircraft structural materials |
January 20, 1998 |
| A mechanical testing process for insuring composite patch bond integrity. A composite patch is applied to an aircraft aluminum skin. A thermal imaging system views the composite patch using both low and high heat techniques with prior calibration to a calibration standard. The inspection |
