Abstract: A system for secure broadband communication, including: (a) a server device for transmitting data; and (b) a client device including a broadband modem for receiving data, the broadband modem including: (i) a public hardware identification key for being sent to the server device, such that the client device is identified by the public hardware identification key and such that the server device permits transmission to the client device through the broadband modem according to the public hardware identification key, and (ii) a private hardware identification key for controlling reception of data by the client device through the broadband modem, the private hardware identification key being known by the server device, such that substantially only data being marked by the private identification key is passed to the client device from the server device by the broadband modem.

Abstract: Method and apparatus for automatically controlling the opening and closing of a door by: (a) ultrasonically monitoring a predetermined approach area located in front of the door for the entry of an object into the approach area and the movement of the object towards the closed door; (b) ultrasonically monitoring a predetermined opening-door protect area laterally outwardly of the outer end of the closed door, and a predetermined closing-door protect area inwardly of the inner end of the door for the presence of an object in the opening-door and closing-door protect areas; and (c) controlling a drive in response to the above monitoring operations.

Abstract: A plastic liner having a second, deformed shape, and having a memory of a first, undeformed memory shape, the deformation in the deformed shape comprising one or more deformations, at least one of which is a twist deformation consisting of alternate left-right twists along the liner.

Abstract: Fluid treatment apparatus including a vessel having a fluid inlet port, a fluid outlet port and a deflector plate and containing a medium and an inlet having an inlet end in flow communication with the fluid inlet port and a discharge end providing an incoming flow of untreated fluid against the deflector plate for reversal thereby to an outgoing flow of fluid passing through the medium for treatment, the clearance between the discharge end and the deflector plate being selectively adjustable for controlling the flow of fluid through the vessel.

Abstract: A self-closing control valve for stopping the penetration of propellant gas into a liquid dispensing system, upon the exhaustion of the liquid from its supply vessel. The valve is easily assembled into standard beer barrels or syrup vessels of CO.sub.2 gas propelled beverages dispensing installations.

Abstract: A game comprising a plurality of substantially rigid playing discs each having an upper and lower surface bound by a circumferential ridge which is up-raised with respect to the upper and lower surfaces so as to provide a recess in the upper surface for accommodating therein a corresponding protrusion in the lower surface of an adjacent playing disc placed thereon, the upper surface having a visual image thereon. In use, the playing discs are stacked one top of another and each player is provided with a turn for striking a topmost one of the playing discs towards a periphery thereof so as thereby to upturn a number of the playing discs in the stack, the player claiming for himself those discs whose upper surface is downmost. An object of the game is to maximize the number of upturned playing discs.

Abstract: A game comprising a main ;stick connected at each end to an endcap having an inner-facing surface and an opposite outer end. A pair of manipulator sticks are held by a player for manipulating the main stick at the inner-facing surface of one of the endcaps on either side of the main stick so as to toss it into the air and catch it via one of the endcaps. This is accomplished by steadying the main stick on one side with one of the manipulator sticks as it comes towards the player and immediately locating the other manipulator stick on an opposite side of the main stick. Any natural tendency for the main stick to fall causes the inner-facing surface of one of the endcaps to come to rest on the two manipulator sticks.

Abstract: A corrosion resistant structure having an outer ceramic layer of alumina stabilized zirconia resistant to oxidation at high temperatures, over a base alloy selected from the group consisting of CoCrAlY and NiCrAlY and applied to the base alloy by physical vapor deposition process, such as reactive magnetron sputtering wherein the outer ceramic layer has a thickness of from about 0.5 .mu.m to about 200 .mu.m.

Abstract: An electrically controllable pyrofuze pin device for ordnance device actiion which functionally replaces the mechanical barrier and arming wire or other rigid and removable means used to provide ordnance device activation. The device includes a pyrofuze pin, a connecting ignitor transfer charge, and ignitor, and electrical terminals to provide power from an external power supply, and a weatherproof housing. When electrically activated the pyrofuze pin is reduced to molten by-products which functionally eliminate the mechanical barrier and permits the activation of the ordnance device.

Abstract: Preparation of the novel monomeric compounds of the formula (t-Bu).sub.2 t-Bu).sub.2, where M is Ga, Al, or In and E is As, P, Sb, or N, by reaction of (t-Bu).sub.2 MCl and LiE(t-Bu).sub.2. The resulting product (t-Bu).sub.2 ME(t-Bu).sub.2 can be pyrolyzed to form crystalline films of the metallic material, ME.

Abstract: A safe and arm device with a thermomagnetic generator sharing a tubular sed shaft with a turbine. Weapon propellant exhaust gas enters the shaft and heats thermomagnets in the generator causing their magnetism to be produced and flux lines to flow from rotor to stator. The gas moves translationally through the shaft and into the turbine. The gas leaving the turbine rotationally is discharged into a radial exhaust tube. A plug in the tube must be removed to permit gas exhaust from the turbine. Only then can the turbine and connected generator rotate causing the thermomagnetically produced flux lines of the rotor to be cut by the stator resulting in an induced voltage out of the generator.

Abstract: The upper and lower panel of a ram air inflated parachute canopy are conned interiorly of the canopy by lines extending between the panels at points spaced chordwise and spanwise of the panels so that airflow is unrestricted within the canopy and the weight and bulk of chordwise ribs is eliminated. The parachute suspension lines have connections to the lower panel at points where the interior lines connect to the lower panel and these connections may be made by loops incorporated in the lower panel. The interior line lengths and the proportions of spanwise end panels of the canopy may correspond to a triangular chordwise cross sectional shape of the canopy. The upper panel may have an extension forwardly of the lower panel with lines extending between the extension and the suspension lines to downwardly curve the extension and partially close the open forward end of the canopy.

Abstract: The new compound diallyl telluride and other diorgano telluride compounds are prepared from alkali metal tellurides obtained by an efficient reaction between an alkali metal and tellurium in a naphthalene/tetrahydrofuran solution. The alkali metal telluride then reacts with an organo halide to form the final product which is easily isolated by filtration followed by vacuum distillation.

Abstract: Preparation of the novel monomeric compounds of the formula (t-Bu).sub.2 t-Bu).sub.2, where M is Ga, Al, or In and E is As, P, Sb, or N, by reaction of (t-Bu).sub.2 MCl and LiE(t-Bu).sub.2. The resulting product (t-Bu).sub.2 ME(t-Bu).sub.2 can be pyrolyzed to form crystalline films of the metallic material, ME.

Abstract: An artificial neural network, which has a plurality of neurons each receiving a plurality of inputs whose effect is determined by adjust able weights at synapses individually connecting the inputs to the neuron to provide a sum signal to a sigmoidal function generator determining the output of the neuron, undergoes memory modification by a steepest-descent method in which individual variations in the outputs of the neurons are successively generated by small perturbations imposed on the sum signals. As each variation is generated on the output of a neuron, an overall error of all the neuron outputs in relation to their desired values is measured and compared to this error prior to the perturbation. The difference in these errors, with adjustments which may be changed as the neuron outputs converge toward their desired values, is used to modify each weight of the neuron presently subjected to the perturbation.

Abstract: This invention is a lightweight, potentially expendable, temporary canopy sembly for small open type watercraft. The thin resilient battens are interconnected in the form of a bowed longitudinal ridge member having a plurality of shorter length, transversely disposed, longitudinally spaced, bowed rib members connected therewith, with the free ends of the battens, inserted through D-ring type attachment means provided on the inner periphery of the watercraft, while exerting frictional tension against the craft's gunwales areas. A flexible Nylon type cover comprised of selectively joinable half sections is used as the protective canopy. It uses preferably complementally mateable hooks and loops type manual fastener means, such as Velcro.RTM. complemental fastener strips, to provide the selective attachment and detachment of the two halves over the bowed center ridge member, and also to detachably secure the canopy perimeter portions to the gunwale areas.

Abstract: An apparatus for analyzing unknown microstructures in samples with known microstructure configurations, both biological and non-biological, by optically correlating the unknown with the known. The apparatus employs a microscope to produce images of unknown microstructures in a sample, a laser for illuminating the sample, a Vander Lugt correlator, including a preselected matched filter for particular known microstructures of interest, for optically correlating the image of the unknown microstructures with preexisting images of known microstructures, a CCD array to detect correlation indicia, and a microcomputer to control positioning of the sample for imaging, orienting the matched filter, and scanning by the CCD array of the indicia resulting from the correlation for reading and counting the same.

Abstract: A method for dissipating static electrical energy from air cushion vehicles hen operating more particularly in cold, low humidity environments, which method involves fabricating the skirt assembly from a flexible sheet material of at least semiconductive character which will provide a suitable dissipating grounding pathway to discharge potential static electrical energy generated during the aforesaid operation thereof. The method includes utilizing a coated flexible fabric material having at least one of its opposite surfaces coated with an elastomeric abrasion-resistant material, and embedding a plurality of electrically conductive flexible strands at least partially within said flexible fabric material, or alternatively embedding electrically conductive particles or fibers in a generally uniformly manner throughout a forming of its elastomeric composition.

Abstract: A control and digital telemetry arrangement for an aerial missile includes digital telemetry system, a firing circuit, a battery and a latching relay. The digital telemetry system receives an analog input telemetry signal and produces and transmits to a ground station a digital output telemetry signal representing the current status of missile functions. The firing circuit is connected to the telemetry system to indicate that a firing command signal for firing the missile rocket motor has been received. The battery is capable of being switched back and forth between non-conducting and conducting states. The latching relay is connected between the telemetry system and battery and the system and external ground power and capable of switching the battery from its non-conductive to conductive state for latching power from the battery to said telemetry system. The digital telemetry system, firing circuit, battery and latching relay are packaged in a cannister housing which, in turn, is mountable in the missile.