| Patent Number |
Title Of Patent |
Date Issued |
| 5214562 |
Electrostatic discharge protective circuit of shunting transistors |
May 25, 1993 |
| An electrostatic discharge protective apparatus for an integrated circuit having normally on semiconductor devices mutually connecting input/output pads and the power in bonding pad to prevent stray electrostatic discharges from damaging the integrated circuit components when the int |
| 5214534 |
Coding intensity images as phase-only images for use in an optical correlator |
May 25, 1993 |
| A method of performing image correlation in a Fourier transform correlator utilizes phase-encoding of the input image as a phase object with a normalized amplitude component. Phase-only reference image filters are used in conjunction with the phase-encoded input objects to improve the |
| 5213252 |
Method to produce selectively reinforced titanium alloy articles |
May 25, 1993 |
| A method for producing fiber reinforced titanium alloy articles which comprises casting a plurality of segments which can be joined to provide a unitary article, wherein at least one-half of the segments comprise at least one shallow cavity, treating the cast segments in such manner as t |
| 5213099 |
Ear canal pulse/oxygen saturation measuring device |
May 25, 1993 |
| An improved apparatus and method for non-invasive monitoring of blood oxygen saturation and pulse is made by modifying a conventional prior art pulse oximeter probe for use inside an ear canal or other body cavity. This placement is particularly useful for unobtrusively monitoring the |
| 5212013 |
Inorganic wire insulation for super-conducting wire |
May 18, 1993 |
| The need for high current, high field, low loss, stable superconductors has led to the development of multifilamentary Nb.sub.3 Sn as the most promising candidate for use in superconducting machines. However, the brittle nature of Nb.sub.3 Sn and the high reaction temperature (.about |
| 5209861 |
High temperature nonflammable hydraulic fluid |
May 11, 1993 |
| A high temperature, nonflammable working fluid consisting essentially of about 0.1 to 5.0 w/o of a rust-/corrosion-inhibitor and about 0.01 to 1.0 w/o of a lubricity additive, balance a chlorotrifluoroethylene oligomer base oil, wherein the lubricity additive is a sulfonamide having the |
| 5209059 |
Active cooling apparatus for afterburners |
May 11, 1993 |
| The present invention comprises at least one active cooling apparatus incorporated into the nozzle liner of sidewall of an afterburner. The liner has a plurality of cooling air holes located under the apparatus. Within the liner is a supply of cooling air under high pressure. Over the |
| 5208136 |
Fabricating of integrated optics |
May 4, 1993 |
| Method for fabricating components for integrated optics are provided wherein a film of polystyrene doped with methyl red (PS-MR) on a glass substrate, is masked, e.g. with one or more metallic strips on a glass plate and such film is irradiated with, e.g. a UV lamp, tuned within the |
| 5207558 |
Thermally actuated vane flow control |
May 4, 1993 |
| Thermally actuated flow diverters for gas turbine engines are provided which include an arrangement of vanes in spaced overlapping array, which direct, e.g. coolant air flow to rotating engine components, each vane having 3 foil components joined at 3 hinge points. That is, a leading foi |
| 5206944 |
High speed analog to digital converter board for an IBM PC/AT |
April 27, 1993 |
| A digitizer, which comprises integrated circuit cards designed to attach to an expansion slot in an IBM PC/AT, operates at 20 megasamples per second for approximately 52 milliseconds and provides eight bit resolution on the signal input. The computer software includes a device driver for |
| 5206094 |
Fuel cell evaporative cooler |
April 27, 1993 |
| A fuel cell stack is cooled by evaporation of water into a carrier gas such as fuel or oxidant. The coolant and the carrier gas are separately supplied to the cooler, and this allows the fuel cell to operate at high pressure without raising cell temperature. |
| 5205710 |
Helicopter blade crack detection system |
April 27, 1993 |
| The invention is a helicopter blade crack detection system for blades that are hollow and pressurized or evacuated to a low pressure A rotating assembly having a rotating indicator assembly photo-optically communicates to an airframe detection assembly providing high reliability, ease of |
| 5204875 |
4-ary correlator, matched filter, and decoder for coherent, direct sequence, spread spectrum app |
April 20, 1993 |
| A system for decoding an IF signal modulated with 4-ary words generated at a known spreading rate (PN code) comprises a receiver in which four known 4-ary words are generated at the same rate. The system then compares the incoming signals modulated with unknown 4-ary words with each of f |
| 5204818 |
Surveying satellite apparatus |
April 20, 1993 |
| A surveying satellite apparatus having an on-board microprocessor to process sensor-provided data from planetary and/or celestial reference scene. The sensor data is compared with the on-board spacecraft database to determine if any misorientation or translation error is present. The |
| 5204784 |
Deformable mirror with pneumatic actuator pre-load |
April 20, 1993 |
| In a deformable mirror having a mirror face plate and a plurality of axially movable piezoelectric actuators for controlling the contour thereof, an improvement is provided by which a pneumatic pre-load assembly is inserted between the face plate and the actuators. The assembly inclu |
| 5204685 |
ARC range test facility |
April 20, 1993 |
| In order to measure the far field antenna pattern of a phased array antenna, the phased array is focused at a probe antenna which is a specific distance away from the aperture. The antenna pattern is then measured by moving the probe antenna on a constant focal arc. This arc minimize |
| 5204616 |
In-circuit test fixture for leaded packages |
April 20, 1993 |
| An in-circuit test probe apparatus for probing the finely and closely spaced leads of an LSI circuit package in order to monitor the signals on the pins. A magnetic holding assembly is utilized to attach the test probe apparatus to the circuit package which is positioned with a cavity in |
| 5203632 |
Gas turbine pyrometer filtering system |
April 20, 1993 |
| A gas turbine pyrometer filtering method and system uses a pyrometer to measure the high pressure turbine blade temperatures using infrared optical detection techniques. The pyrometer signal can be cluttered by positively biased noise. The turbine speed and the pyrometer electrical s |
| 5202896 |
Bipolar inversion channel field effect transistor laser |
April 13, 1993 |
| A new type of laser structure utilizes field-effect at a self-aligned p-n junction to control the current flow into the active quantum well region. The HFET laser structure is identical to the corresponding HFET transistor and is realizable with the same fabrication technology. The optic |
| 5202691 |
Hick's probabilistic data association method |
April 13, 1993 |
| A process, known as the Hick's Probabilistic Data Association Algorithm, correlates sensor measurement to target tracks under condition in which there are numerous false measurements. It accomplishes this by forming multiple hypotheses and computing a probabilistic score for each. The |
| 5201035 |
Dynamic algorithm selection for volume rendering, isocontour and body extraction within a multip |
April 6, 1993 |
| This is a methodology which reduces the time required to render a volume with extracted isocontours and inserted cutting plane and perform an arbitrary rotation within a three-dimensional volume. The volume is first partitioned among the processors of a multiple-instruction, multiple-dat |
| 5200495 |
Rigid-rod benzobisazole polymer containing cyclic phosphate ester |
April 6, 1993 |
| Rigid-rod aromatic heterocyclic polymers having repeating units of the formula: ##STR1## wherein Ba is a benzobisazole moiety of the formula: ##STR2## wherein X is --O--, --S-- or --NH. |
| 5199159 |
Methods for cryogenic removal of epoxy/wire field windings and for separating multi-layer printe |
April 6, 1993 |
| A method of separating structure comprising first and second components having different coefficients of thermal expansion and bonded together with a bonding material. Separation is achieved by immersing the structure in a cryogenic cooling substance to break the bonding material as a re |
| 5199147 |
Movable jig assembly for the manufacture of aircraft components |
April 6, 1993 |
| A spar assembly jig for tack-free positioning of aircraft spar components for subsequent fastening at a second location. Pneumatically operated clamps are mounted on the frame of such jig. The spar components are laid up in such jig and the clamp closed thereon to hold the members togeth |
| 5198972 |
Turn-off switch phase control with improved ripple and power factor |
March 30, 1993 |
| An improved commutation arrangement for an AC to AC or AC to DC energy converter circuit is disclosed. The improved arrangement uses turn-off capable commutation switches to enable modification of the operating waveforms in the cycloconverter. The modified waveforms include an operat |
| 5198812 |
Aircraft attitude indicator display |
March 30, 1993 |
| An aircraft attitude display format which maintains the horizon reference line always in view and which presents the pilot with multiple indications of aircraft attitude differing from level flight. The multiple indications include attitude registration along an angular scale and shape c |
| 5198748 |
Frequency measurement receiver with bandwidth improvement through synchronized phase shifted sam |
March 30, 1993 |
| A technique covered by patent applicaton S.N. 07/672,309 divides power of an input signal to two A/D converters. A processor receives the outputs of the two A/D converters. The input signal is subjected to a known delay .tau. for one of the converters, and both original and delayed signa |
| 5197341 |
Payload attitude control tester |
March 30, 1993 |
| The testing device, also known as a totally integrated payload attitude control tester (T.I.P.A.C.T.), is suspend on a single, high strength, low torsional moment line through the gravity vector axis. Attached directly to this line is a strong back assembly having a fixed lateral width w |
| 5197084 |
Automatic information acquisition system |
March 23, 1993 |
| The automatic information acquisition system includes a process for the control of a tunable radio receiver to automatically receive, decode, and store digitally-coded information which has been transmitted by radio. Key elements of the system include a general-purpose digital computer, |
| 5196774 |
Digital servo system |
March 23, 1993 |
| A digital servomechanism and control system which can be used to adjustably point massive structures to increments of microaradians is disclosed. This system includes: a rotating pedestal which is mounted on a gimbal, a high torque motor, a high current amplifier, encoder, a digital-to-a |
| 5196130 |
Lubricity additive for high-temperature gas turbine engine oils |
March 23, 1993 |
| A tris[4-(chlorophenoxy)phenyl] phosphate of the formula: ##STR1## wherein n has a value of 1 to 5. This compound is effective as a lubricity additive for high temperatures lubricants. |
| 5196097 |
Method and apparatus for field-induced transparency using laser radiation |
March 23, 1993 |
| System and method for selectively inducing transparency to laser radiation in a material are described comprising a material having a ground state and two closely-spaced first and second excited states wherein the transition dipole moment d.sub.1 between the ground and first excited |
| 5195058 |
Ultrasonic method for non-intrusive low liquid level sensing |
March 16, 1993 |
| This disclosure concerns the application of the pulse echo principle to the non-intrusive method of low liquid level sensing to determine the level of a liquid in a container. Generally, the sensor is attached to an outer wall of a liquid container by means of an epoxy adhesive. An ultra |
| 5194519 |
Rigid-rod graft polymers and copolymers |
March 16, 1993 |
| Fusible, rod-like, graft polymers and copolymers having repeating units of the formula: ##STR1## wherein x ranges from 0 to about 0.97, y is 1-x, Y is a poly(etherketone) (PEK) or a poly(etheretherketone) (PEEK), and wherein Ba is a benzobisimidazole or benzobisthiazole moiety ar |
| 5192192 |
Turbine engine foil cap |
March 9, 1993 |
| In an axial flow turbo-machine such as a gas turbine engine, a foil cap for hollow blades or cantilevered vanes, aft of the combustion chamber thereof is provided, the cap having cooling apertures therethrough which diverge from inside to outside thereof, the improvement being, placing a |
| 5191327 |
Programmable remote transducer with filtering, differentiation, integration, and amplification |
March 2, 1993 |
| A mechanical-to-electrical transducer arrangement wherein a combination of signal preamplifier and programmable analog signal processing circuitry is disposed immediately adjacent the transducer's sensor cell where low losses a low noise coupling into the signal path can be achieved. The |
| 5189606 |
Totally integrated construction cost estimating, analysis, and reporting system |
February 23, 1993 |
| CCMAS is an integrated construction cost generator which may be used to develop costs for construction projects; to analyze and estimate facilities associated with major weapons programs; for administrative, medical and support facilities as well as runway/taxiways; and for developin |
| 5189554 |
Telescope baffle system |
February 23, 1993 |
| A telescope baffle system is disclosed for use with optical instruments. The baffle structure consists of highly reflective low scatter annular arrays of retro-reflecting cube corners which have the capability of returning rays back upon themselves such that most off-axis radiation s |
| 5189294 |
Transform lens with a plurality of sliced lens segments |
February 23, 1993 |
| A sliced transform lens is used to combine and focus the optical output signals of a planar M by N laser diode array onto M detector elements in a linear detector by displacing lens slices. A sliced transform lens is used to separate the composite image of the laser diode array on the de |
| 5188292 |
Thermal shields for rotating members in a gas flow path |
February 23, 1993 |
| In a gas turbine engine, in a wall aperture of a 2-D variable area gas turbine exhaust nozzle, at least two members are rotatably and concentrically mounted in such aperture, substantially flush with the wall and in the path of hot exhaust gases flowing thereover, wherein an improvem |
| 5187788 |
Graphics system for automatic computer code generation |
February 16, 1993 |
| The Avionics Program Expert (APEX) is an automatic code generation tool for the Ada programming language (MIL-STD 1815A). It provides the programmer using APEX with the ability to quickly create a graphical representation of his initial program design. The graphical representation used b |
| 5187541 |
Single beam angular deviation measurement system and method |
February 16, 1993 |
| System and method for measuring angular deviation in a transparency are described which comprise the steps of directing a large diameter collimated beam of light along an optical axis through a transparency, focusing a portion of the collimated beam, determining the position of the f |
| 5187485 |
Passive ranging through global positioning system |
February 16, 1993 |
| To passively measure the range to a target, GPS signals which are scattered by the target are used to determine the distance from the target to an observation station whose position P.sub.o is determined by a GPS technique. If the delay time from the reflected signal of the target can |
| 5186785 |
Zone melted recrystallized silicon on diamond |
February 16, 1993 |
| In silicon-on-diamond (SOD) technology, diamond replaces the silicon-dioxide in the silicon-on-insulator structure. Diamond is good thermal conductor unlike silicon dioxide and a good electrical insulator like silicon dioxide. A high grade, high purity device-quality silicon wafer is |
| 5184459 |
Variable vane valve in a gas turbine |
February 9, 1993 |
| In a gas turbine bypass engine having an inlet for gas flow to a core duct and an outer duct for bypassing a portion of the inlet air flow around such core duct, an improvement is provided in which a plurality of pivotal outlet guide vanes mounted on the rear frame member, aft of the |
| 5184455 |
Ceramic blanket augmentor liner |
February 9, 1993 |
| An aircraft augmentor cooling blanket is provided, which is woven from flexible refractory ceramic fibers, which blanket is bonded to a cooling air supply support structure by a metal wire woven through a lower blanket portion and brazed to the support structure. The resulting liner is |
| 5184138 |
Data distribution network |
February 2, 1993 |
| The data distribution network (DDN) improves processing throughputs (eight million bytes per second) whenever high data rates of unsorted data are input to a processing system by combining synethetic (hash) addresses with look-up tables. The DDN includes coarse steering logic, fine steer |
| 5181025 |
Conformal telemetry system |
January 19, 1993 |
| A conformal telemetry package comprises a complete system including sensors, data acquisition components, a controller, RF transmitter, antenna and battery. The package is approximate 0.1 inch thick and is flexible and capable of conformable mounting to a curved surface. This package |
| 5179382 |
Geodesic radar retro-reflector |
January 12, 1993 |
| An improved radar retro-reflector providing overlapping coverage at low angles of elevation comprises a plurality of three-corner retro-reflectors made of electromagnetically reflective material lying in three planes which intersect each other at right angles. The individual retro-re |
| 5179307 |
Direct current brushless motor |
January 12, 1993 |
| The variable speed, reversible, brushless, direct current motor comprises a rotor, electromagnets a switching transistor module and electronic controller module. The rotor is mounted on a shaft with bearings at each end, with a plurality of permanent magnets symmetrically placed thereon |
