"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 4804250 | Optical processor for an adaptive pattern classifier A multipurpose optical processor is described which functions as a multis dual scale adaptive pattern classifier. Normalization, enhancement, inhibitory convolutions, recurrent feedback, code stabilization, time sequences, reconstruction from partial dat... | 02/14/1989 |
| 4763361 | System and device for recognition or IFF use The IFF System consists of an unpolarized light source like an infrared laser or a short wavelength radar. On a friendly target, a wire grid polarizer is mounted so that the polarization can be varied. Mounted to the back of the grid is a corner reflector... | 08/09/1988 |
| 4743097 | Incoherent image intensity normalization, contour enhancement, and pattern recognition system Incoherent optical processing techniques are shown which demonstrate image intensity normalization and contour enhancement. A new type of incoherent optical correlator which combines a model of the human neural system with an intensity image convolver. Th... | 05/10/1988 |
| 4740839 | TV surveillance system that requires no mechanical motion This invention provides a method of providing TV surveillance without the need for cumbersome pan and tilt mechanisms. The method involves underscanning a conventional TV camera and dynamically moving the resultant reduced size raster over the photo condu... | 04/26/1988 |
| 4737643 | Polarization analyzer for high energy pulsed laser beams A wire resistor is mounted so that its position may be rotated continuously. The resistance of the wire (when subjected to the high energy laser beam) is measured as a function of position by use of a bridge circuit for determining the resistance and a po... | 04/12/1988 |
| 4737028 | Target loop active boresighting device The invention disclosed here is a sensor comprised of a laser designator, a and block filter and a two-dimensional sensor that can "see" the target in one band and the designator in another band, thereby giving a single sensor dual band system--something n... | 04/12/1988 |
| 4732470 | Parallax error measurement device The Parallax Error Measurement Device (PEMED) is an instrument used to mere parallax error associated with military night sights and other sights containing reticles. The PEMED consists of the following components: aperture translation stage; camera lens... | 03/22/1988 |
| 4715683 | Modified liquid crystal television as a spatial light modulator The spatial light modulator utilizes a modified liquid crystal television for modulating a laser beam so as to produce a transformed hologram image on a film plate which is identical with the video information being fed into the liquid crystal TV. Once a ... | 12/29/1987 |
| 4696441 | Missile referenced beamrider In accordance with this invention, a missile referenced beamrider guidance ink is provided in which a continuous wave or pulsed laser output is formed into a gaussian cross section or similarly shaped beam and projected to one offset sensor, or to two sens... | 09/29/1987 |
| 4695120 | Optic-coupled integrated circuits Signal/data enters the IC in optic form via an optically-efficient method om either fiber optic or circuit-trace optic waveguides. The optic signal/data is transformed to electrical signal/data via the photo-sensing cells that are illuminated by each chan... | 09/22/1987 |
| 4692623 | Precision laser beam positioner and spatially resolved laser beam sampling meter The meter consists of wire resistors arranged so as to sample the energy in a laser beam at different locations in the beam. Each resistor is part of a bridge which includes three other resistors, a power source, a detector (volt meter) and a display unit... | 09/08/1987 |
| 4673940 | Detection of vibrating target signatures This radar system can be used as an independent entity or as an addition to n operating radar system for acquiring additional data from a radar target's returned signal that is not currently being utilized. The system is to separate the amplitude modulatio... | 06/16/1987 |
| 4673870 | Automated calibration technique for non-field perturbing (electrically small) electromagnetic field sensors A small field probe is calibrated by selectively varying the field intens and frequency and recording the data in arrays with each incremental step. The arrays are built by selectively varying one parameter while maintaining another constant. In this way... | 06/16/1987 |
| 4657208 | Rotating warhead The method achieves a top soft armor attack with the favorable attack ang In addition it eliminates the wiping motion. This is accomplished by a small upward exhausting thruster over the warhead. This thruster, activated on command from the launch statio... | 04/14/1987 |
| 4647849 | Two dimensional non-field perturbing, diode detected, double gapped, high sensitivity, B-dot electromagnetic field probes A two dimensional portable double gap detected probe for measuring B fields n large test volumes which are remote from electrical power. The probe is small, portable, and constructed for minimum field perturbation. The output of the probe is read by an ord... | 03/03/1987 |
| 4642651 | Dual lens antenna with mechanical and electrical beam scanning A mechanically positioned phase steered transfer lens which is illuminated y a fixed collimation lens. Wide angle scan is accomplished by tilting the movable lens and electronically scanning the beam to the desired angle. The mechanical motion minimizes th... | 02/10/1987 |
| 4639642 | Sphericon A spherical RF source tube which requires no magnetic fields for its operation which consists of two concentric spherical shells. The inner shell, which is open and which is nearly transparent to electrons, is charged positively with respect to the ground... | 01/27/1987 |
| 4637726 | Nondestructive noncontact device to characterize semiconductor material A wafer is positioned in a magnetic field. A computer initializes the light level and the electronic gain of each detector preamp associated with a fiber optic link from the analyzer. The magnetic field direction would then be reversed by computer command... | 01/20/1987 |
| 4635158 | Filtering transient voltage suppression device assembly This filtering transient voltage suppression device assembly adequately pides for filtering of electrical noise and transients. It also provides a circuit with reduced parasitic inductance of the voltage suppression device (VSD). It provides for connecto... | 01/06/1987 |
| 4635160 | Tri-plane transient voltage suppression device assembly This Transient Voltage Suppression Device Assemblies (TVSDA) adequately pides for the parasitic inductance of the voltage suppression device (VSD). This TVSDA provides for one connector to be mounted in a plane at each end of the assembly. This mounting ... | 01/06/1987 |
| 4635159 | Transient voltage suppression device assembly This transient voltage suppression device (TVSDA) provides for two sets of onnectors (one input and one output) to be mounted in a single plane. Voltage suppression devices are connected, in a low parasitic inductance fashion, between leads interconnecting... | 01/06/1987 |
| 4614913 | Inherently boresighted laser weapon alignment subsystem A laser weapon which has no boresighting problems in that only one laser is sed to perform all the functions of search, track, and negation. The laser weapon is made to operate in both a low power cw mode and a high energy pulsed mode about the boresight. ... | 09/30/1986 |
| 4611116 | Light emitting diode intensity tester A device that tests the output intensity of light emitting diodes. The light emitting diode to be tested is placed in a light tight tube in which is placed a photocell. The photocell is placed so as to be in contact with the diode. When power is applied t... | 09/09/1986 |
| 4606020 | Efficient design technique for wavelength division multiplexing More than ten different wavelength channels are multiplexed over a single tical fiber for use in optical slip ring assemblies. The ends of multimode fibers, through which light signals of different wavelengths are transmitted, are packaged and fused to th... | 08/12/1986 |
| 4604608 | Positive action release mechanism A spring loaded lever is tied down by a resistor and released when an over supply of voltage is applied to the resistor from a command source. The lever can have a string attached to it such that it will open a container when the resistor breaks. Or the l... | 08/05/1986 |
| 4600305 | Dynamic energy centroid locator and processor (declp) The laser source energy and the target source energy goes through a common ptical path to a beam splitter. The energy from the target source is filtered, allowing only the laser information to pass through to the laser quadrant detector. The second path fr... | 07/15/1986 |
| 4595287 | Doppler effect laser velocity measuring system The frequency shift of reflected laser beam from a target is transformed o an angular measurement which is proportional to the velocity of the target relative to the measurement platform. The system uses the refraction angle of the reflected beam from a ... | 06/17/1986 |
| 4594546 | Voltmeter for remotely sensing high voltages A passive voltmeter that measures pulses of high voltage by periodically charging a condensor through a spark gap. The frequency at which the spark gap breaks down is a function of the voltage being measured and is detected and displayed in volts. Radioa... | 06/10/1986 |
| 4589009 | Non-volatile piezoelectric memory transistor A piezoelectric double diffusion MOS structure in which three gates are inserted in the CVD oxide element. These gates are overlapped layers of CVD polysilicon on top of the ZnO and are capacitively coupled to the silicon substrate. The charge is placed o... | 05/13/1986 |
| 4580139 | Waveform design for optimized ambiguity response This is a method of waveform design and range correlator implementation t uses weighting to optimize a radar receiver's ambiguity response in both the temporal and frequency dimensions of the ambiguity function. It is an extension of group-complementary ... | 04/01/1986 |
| 4574191 | Wide field-of-view laser spot tracker A laser spot tracker having a wider field-of-view by the use of a phase draction plate to cause the focusing of a square array of spots upon a focal plane having a plurality of detectors thereon. Using the detectors to find the spot of the greatest inten... | 03/04/1986 |
| 4560120 | Spin stabilized impulsively controlled missile (SSICM) SSICM is a missile configuration which employs spin stabilization, nutatil motion, and impulsive thrusting, and a body mounted passive or semiactive sensor to achieve very small miss distances against a high speed moving target. SSICM does not contain an... | 12/24/1985 |
| 4546358 | Large broadband free radiating electromagnetic test cell This disclosure sets forth a device which produces uniform electromagnetic ields in the medium frequency (MF) and high frequency (HF) regimes over significantly large test volumes. The device converts electromagnetic energy available from a standard radio-... | 10/08/1985 |
| 4542954 | Wide angle lens for the infrared dedicatory clause This rotationally symmetric optical sensor consists of six lens elements e selectively of the alkali halide materials KBr, C I, and KI. It has a wide field-of-view coverage of 60 degrees and operates in the middle infrared through the far infrared bands ... | 09/24/1985 |
| 4542870 | SSICM guidance and control concept The guidance scheme utilizes wide beam width semi-active RF sensors, a prsion roll altitude reference, and a controlled grade pitch, yaw and roll rate gyros to deliver high quality homing guidance information to a spin stabilized controlled missile. A fi... | 09/24/1985 |
| 4517486 | Monolitic band-pass filter using piezoelectric cantilevers The device is made by growing thin-film layers of materials on a silicon strate. These layers are then removed selectively by photolitographic masking and etching, to produce a pattern which is a series of cantilever plates which are piezoelectrically co... | 05/14/1985 |
| 4514690 | Power line field interference rejection for magnetic sensors The discriminator consists of two major parts; a nonlinear filter for low vel rejection, and inhibiting logic for high level rejection, of ac magnetic fields. The nonlinear filter approximately halves the frequency characteristics of a particular class of... | 04/30/1985 |
| 4514684 | Acoustic waveguide voltage monitor The monitor system consists of a voltage controlled oscillator for produc an acoustic wave whose frequency is proportional to the voltage being measured. An acoustic waveguide is used for transmitting the wave to an electrically isolated acoustic to elec... | 04/30/1985 |
| 4513288 | Group-complementary code sets for implementing pulse-compression processing with optimum aperiodic autocorrelation and optimum cross-correlation properties A group-complementary codes provide sets of binary word groups which have the combined properties of optimized aperiodic autocorrelation and optimized cross-correlation between word sets. The optimized aperiodic autocorrelation property allows the impleme... | 04/23/1985 |
| 4507746 | Programmable matched filter for binary phase-coded signals A programmable digital device designed to perform a matched filtering opeion on arbitrary binary phase-coded signals. The technique is used in secure communication systems and for various radar and missile fuzing operations. The essential features minimi... | 03/26/1985 |