Abstract: A compact waveguide bend structure having high power handling capability, particularly designed for use with TE.sub.01 circular overmoded waveguide, comprises a transition from circular overmoded waveguide to rectangular overmoded waveguide (using the TE.sub.20 mode), followed by a TE.sub.20 mode rectangular waveguide bend, and a transition back to circular overmoded waveguide.

Abstract: A method and apparatus are described for image matching, particularly for increasing match information in scene matching navigation systems. The invention correlates a sequence of sensed images with a reference map and stores the resultant correlation surfaces. The correlation surfaces are then added so that match point correlations combine coherently by superposing the individual correlation surfaces using short term accurate navigation data. As a result, a composite correlation surface is formed in which the values at the peak (or antipeak) position add up and the effective match area is greatly increased. Both peaks and antipeaks are then detected to determine a match point and provide a navigation position update.

Abstract: The present invention is a heated element sensor for detecting the flow rate of a fluid or other physical characteristics of a fluid. The invention teaches driving the thermo-resistive element along a profile having at least two states and measuring the power and temperature of the sensor at each state. In this way a dissipation coefficient can be determined and fluid flow and other physical characteristics determined without the need for ambient temperature to be determined.

Abstract: A magnetic nerve stimulator comprises a capacitor which is charged to a high voltage, then discharged through a coil placed near the head. The magnetic field produced induces eddy currents in the brain that stimulate neurons. When the capacitor is fully discharged, the discharge path is broken by opening a switch. The inductive action of the coil forces a diode to turn on and the energy from the collapsing magnetic field around the coil charges a second capacitor. The charge on the second capacitor is augmented by a power source to make up for any losses, and the process is repeated. The stimulator of the invention can pulse rapidly, does not cause excessive heating of the coil, and uses comparatively little energy. As a result, high level cognitive functions in the brain can be disrupted for diagnostic purposes.

Abstract: A device and process for adjusting, locking, and mounting a mirror. The device, in one embodiment, comprises three adjustor bolts which are threadably engaged with a mirror assembly and a support plate. Two locking bolts per adjustor bolt apply torque symmetrically to the adjustor bolt to preserve micro-radian adjustments during the locking process. The invention's design also results in extremely high structural stiffness at the adjustor-locking bolt joints.

Abstract: The invention is directed to either a satellite or missile deployed to a high altitude location at a desired position above a target. Once at the proper position a drogue chute is deployed to slow reentry and then a high-altitude balloon or paraglider is deployed to maintain the invention above the target area. Once deployed, the invention utilizes onboard sensors to collect target information which is communicated to an over-the-horizon (from the target) receiver.

Abstract: The invention is directed to a device for rapidly attaching glass to a metal support structure without cracking the glass. The invention consists of a C clamp with a force providing screw threadably engaged through a hole in one leg of the C clamp. The force providing screw has a spindle on one end which rides in a channel in the metal support structure. A spring, Belleville washer or other energy storing device is mounted on the spindle and is compressed against the metal support structure by the spindle base when the force providing screw is tightened. The amount of force that can be applied is limited by the combination of the screw head on the force providing screw and the longer length of the channel in relation to the spindle.

Abstract: The invention provides for a toileting module which can be used in a standard wheelchair and consists of straps and a tensioning mechanism therefor attached to a support structure. The straps run under the wheelchair-bound person and, when tightened, raise the person above the seat cushion permitting its removal and the insertion of a waste receptacle for toileting.

Abstract: A "pulse to zero" modulation scheme is taught to transmit binary information by modulating a bit mark onto a carrier at the start of each "0" in the bit stream. The "pulse to zero" decoder produces an output that switches to "0" at the occurrence of the detected bit mark and resets to "1" if a second bit mark has not occurred within a preset time lapse from the previously detected bit mark.

Abstract: A signal processing technique is described which suppresses interference in spread-spectrum communications receive systems by optimizing the detection process dynamically against the current interference. This is accomplished by estimating the statistics of the interference and then using this information to derive the locally-optimum mapping to apply to the signal of interest plus interference. As the statistics of the interference change, the measured distributions and the resulting transformations also change. The adaptation is open loop so convergence problems do not arise.

Abstract: Apparatus for categorizing and accumulating a plurality of different event types wherein the characteristics of each event are detected by a detector and presented to the apparatus as an electrical signal of variable analog or digital value which may indicate the type, speed, energy level or the like of an event. The apparatus includes a table look-up storage device having a plurality of individually addressable memory locations which receives the electrical or digital value and in response thereto outputs a bin address or clock select number which identifies a particular bin. Clock distribution logic circuitry receives the bin address from the look-up table storage device and in accordance with the bin address selects a particular bin and increments the event count being accumulated therein. Counter select logic circuitry is also provided for use by a host computer or the like to select a particular bin and output the event count being accumulated in the selected bin.

Abstract: A speech analyzer which displays a three dimensional spectral vector representing a phoneme on a two-dimensional screen utilizes an algorithm which generates and displays a triangle representative of a three-dimensional coordinate system. The three-dimensional spectral vector is transformed into a point which is displayed inside the triangle.

Abstract: A method of producing large scale growth of parasites of the genus Toxoplasma is disclosed which comprises inoculating the microorganisms into a non-adherent human cell line, such as a monocytoid lymphoma cell line, and maintaining the cell line in tissue culture media capable of supporting the growth of the microorgranism while the cell line is being maintained. This large scale production allows for the development of vaccines for Toxoplasma microorganisms which previously have been hard to grow in the numbers needed to readily prepare vaccines, and allows for more rapid antibody detection procedures with regard to these microorganisms. There are also disclosed methods for preparing such vaccines, and methods for carrying out antibody detection assays.

Abstract: Apparatus and method for noninvasive fragmentation of body concretions. The apparatus has an integral unit including an ultrasonic locating transducer a relative position determining device, a shockwave generating device and a positioning structure. The method for locating a body concretion includes the steps of locating the body concretion with ultrasonics, the position of the shockwave generating device relative to the concretion, accurately positioning the shockwave generating device at the location of the concretion and then shattering the concretion by generating a shockwave. The shockwave generating device includes a reflector with first and second foci, a location verifying ultrasonic transducer which is positioned so that an axis of the verifying transducer is coincident with a straight line passing through the first and second foci and a spark gap at the first focus which generates the shockwave.

Abstract: Wire winding apparatus for winding wire about an arbor having a straight or curved center line and having either a circular or a nearly circular cross-section. The wire winding apparatus includes a frame having two parallel spaced apart triangular shaped ends, a spool holder disposed between the frame ends for holding at least one spool of wire, a wire straightening device disposed between the frame ends for straightening the wire as it comes off the spool, wire laying apparatus disposed between the frame ends having three wheels with flanges for helically laying the wire onto the arbor whereby each turn of the wire is wound nearly perpendicular to the center line of the arbor and an arbor engagement device attached to the frame for engaging the arbor and causing the wire winding apparatus to remain in intimate rotational contact with the arbor.

Abstract: A cellular logic operation processor for performing transformations, according to a controlled sequence, of the data points of a first matrix into a corresponding number of data points of a second matrix. The processor includes a plurality of operably connected digital storage devices for temporarily and sequentially storing each neighborhood of data points from a first matrix, wherein a neighborhood of data points is comprised of a central data point and its surrounding data points in a matrix. The processor also includes a plurality of taps wherein each tap is electrically connected to a digital storage device such that the tap electrically indicates the state of the data point stored in the digital storage device. A look-up table is also provided having stored therein a plurality of transformation values which are individually addressable in accordance with the combined states indicated by the taps.

Abstract: This invention relates to various compositions, comprising a 2-acetylprid thiosemicarbazone and a diol, which are useful in the treatment of viral infections.

Abstract: The embodiments of the invention provide mechanical and electrical appara for inexpensively and swiftly converting conventional firearms temporarily into marksmanship training devices. Illustratively, a number of different devices are shown for attaching marksmanship training and scoring apparatus to the weapon or weapon launcher and to enhance training realism without expending ammunition. Electrical circuits for improved marksmanship training and scoring also are shown and described.

Abstract: The invention is directed to an adjustable mold for use in fabricating bigradable polymeric bone replacements or implants. The invention consists of a box-like structure with two movable plates therein which can be locked into place permitting different size replacements to be fabricated. The interior walls are panels consisting of polytetrafluoroethylene which permit easy removal of a cured bone replacement. The construction and locking means for the movable plates permit the invention to withstand the pressures developed in replacement fabrication as well as to withstand the most commonly used types of sterilization procedures.

Abstract: This invention relates to novel compositions, their preparation and the use thereof as anticholinergic agents in the treatment or prophylaxis of organophosphate or nerve gas poisoning in animals. These compositions and pharmaceutical preparations containing them in their free base form and acid addition salts thereof are represented by the formula ##STR1## wherein R represents lower alkyl groups containing 1 to 7 carbon atoms; R.sup.1 represents hydrogen, phenyl, cyclohexyl, and cyclopentyl; and R.sup.2 represents lower alkyl groups containing 1 to 7 carbon atoms, hydroxymethyl, and hydroxyl.