Abstract: A high-speed modulo exponentiator device employs a computation algorithm and integrated circuit ("IC") hardware implementation to perform the modulo exponentiation function of the form C=B.sup.E (Modulo M) as a series of modulo multiplication operations, which in turn are performed as a series of simple addition, multiplication and distributed modulo operations. The intermediate data maintain a bit length in the range of the bit length of the modulus value. The simplified operations are implemented via register add and shift operations in an arithmetic logic circuit. The arithmetic logic has a bit slice architecture which plural bit slices are combined to form the basic carry-save elements of the exponentiator device. The exponentiator device may be cascaded with other devices for handling numbers of longer bit lengths. Improved techniques are used for optimizing the multiplication time and for pipelining the transfer of data between cascaded elements.

Abstract: The valving element is positively tied to the diaphragm, through a diaphragm-carried insert which has a flow-accommodating groove formed therein to facilitate instant outlet pressure following a gas supply shut off. Too, the valving element cooperates with internal structures to define spaced apart seating and sealing areas which boundary between high and low pressures of the natural gas, and the magnitudes and directions of the differential pressures are balanced at the seating and sealing areas, and maintained in balance regardless of how inlet and outlet gas pressures vary.

Abstract: A connector is provided of the type which has replaceable contact assemblies, including a contact assembly (14, FIG. 3) with a circuit component (70) thereon that has three terminals (72, 74, 76), one (72) connected to the body (54) of the contact assembly, a second (74) connected to a first clip (80) which engages a ground plane (50) of the connector, and a third terminal (76) which engages a second clip (82). A circuit board (52) is mounted in the connector in a plane normal to the axes (31) of the contact assemblies, the circuit board having holes (110) that each receive a different contact assembly. A hole that receives the component contact assembly, is plated and holds a spring clip device (120) that has fingers (124) that bear against the second clip.

Abstract: A multi-layer tube suitable for use on motor vehicles composed of a cylindrical wall having an outer surface, and an inner surface essentially parallel to the outer surface. The cylindrical wall has a first region having an essentially uniform cross-sectional diameter and a second region which has a cross-sectional diameter differing from the essentially uniform cross-sectional diameter of the first region. The second region has at least one convolution contiguously adjacent to the cylindrical wall of the first region.

Abstract: The present invention is a monolithic integrated differential amplifier having an operational amplifier and a digitally controlled means for setting the gain of said differential amplifier wherein the gain is adjustable by means of a resistive feedback network formed by a resistor chain whose taps are coupled via a multiplexer to the operational amplifier. The operational amplifier in the present invention is designated as an adaptive amplifier because its gain-bandwidth product is digitally adjustable in steps, with the respective gain-bandwidth product selected being adapted to the gain setting of the monolithic integrated differential amplifier.

Abstract: The present invention is a circuit for regulating the current across an impedance load. This current regulating circuit is comprised of a main current path including a first control path, a reference-current path including a similar, second control path, and a control means including a pulse generator, a current source controller and an operational amplifier for controlling the first and second control paths in parallel.

Abstract: The present invention is an equalizer circuit for RF frequencies comprising a microstrip transmission line having a stub tuner extending transversely therefrom and further having resistive means coupled to the stub tuner to de-Q the stub tuner, thereby selectively determining an attenuation profile for the equalizer circuit.

Abstract: A night sight for a missile launcher has an objective lens with a field of view of at least 22 degrees. The output image of the objective lens is intensified by a variable gain light intensifier tube and the output of the intensifier is viewed through an eyepiece. A reticle pattern etched on a glass substrate and filled with titanium dioxide is illuminated by adjustable brightness LED's positioned at points on the periphery of the substrate. The reticle is disposed between the light intensifier and the eyepiece and substantially duplicates the function of reticles used in daysights.

Abstract: A broadside microstrip coupler employs a first transmission line which consists of a series of capacitor plates which alternate between a dielectric layer from a first location to a second location and each of the series of plates are connected together with a top plate on the top surface of the dielectric and a bottom plate located a given distance beneath the dielectric layer. A second transmission line alternates between the top and bottom layers of the dielectric and consists of a second series of plates where each capacitor is connected to an adjacent plate with the top plate of the first connecting to the bottom plate of the second and the bottom plate of the first connecting to the top plate of the second and so on. This pattern is repeated so that the conductive plate path alternates from the top to the bottom plate.

Abstract: Atop the impeller are ancillary vanes, the same provided for pumping cooling liquid to the centrifugal pump motor cooling system. The liquid is conveyed through a narrow slot, vertically, which obtains between an annulus of the pump housing and an impeller extension. Grooves, contiguous with inner tips of the ancillary vanes, and formed in the extension, widen the slot, cyclically, coincident with rotation of the impeller, and hasten deaeration of air bubbles which exist, at start-up, between the impeller and the pump housing.

Abstract: A radar system for passive determination of range to a non-cooperative scanning radar, to a non-emitting object illuminated by the scanning emitter and between scanning emitter and illuminated object entirely from the passive location. The radar equipment at the passive location includes a passive array with beam forming and switching matrix to provide output signals separately on the basis of angular discrimination, for each of the object and emitter. Resolver circuits respond to the angle between emitter and object vector, the incremental time between direct emitter reception and reflected echo from the object as well as to emitter scan rate and instantaneous pointing angle. Algorithms for the emitter range, object range and range between emitter and object are given.

Abstract: A two-way data transfer device for the data interface between two data-exchanging cells including a data source and a data sink with at least one buffer provided in each cell. When the transmitter buffer is full or the receiver buffer is empty, a backward cell stop signal freezes the state of the data source or the data sink and the cell stop signals are controlled by status signals from the respective buffers.

Abstract: A broadband microstrip filter structure employs a first transmission line which basically consists of a series of capacitor plates which extend between a dielectric layer from a first location to a second location and each of the series of plates are connected together with a top plate on the top surface of the dielectric and a bottom plate located a given distance beneath the dielectric layer. A second transmission line alternates between the top and bottom layers of the dielectric and consists of a second series of capacitive plates whereby each capacitor is connected to an adjacent capacitor with the top plate of the first connecting to the bottom plate of the second and the bottom plate of the first connecting to the top plate of the second and so on. This pattern is repeated so that the conductor path alternates from the top to the bottom plate. Various capacitors are selected to provide predetermined length resonators while various other capacitors are provided to provide coupling sections.

Abstract: A diaphragm valve which mounts directly on a tank bottom provides positive isolation between the vessel and downstream piping. When closed, the diaphragm seals against the valve body weir to seal the valve, and when opened, the valve provides a smooth, crevice free, drainable passageway to the downstream piping.

Abstract: A quick connector adapted for locking engagement with a male member includes a cylindrical body portion open at one end for receiving the male member and a through passage communicating the open end with a conduit receiving adapter at an opposite end. A valve member is located in the passage and is displaceable from a closed position to an open position to establish open communication therethrough in response to engagement of the body portion and male member. Relatively displaceable, at least partially radially coextensive seats are provided to effect axial engagement with the seal in the closed position.

Abstract: The present invention is a quick connector preferably for use in connecting a fuel filler neck to a fuel tank. The connector includes a housing having a first end which receives a tube or nipple having an upset portion which is preferably mounted to the fuel tank. The connector includes a sliding collar with expandable fingers, a compression ring mounted about the collar and retaining forks for retaining the collar and ring within the housing. The upset can be inserted past the expandable fingers with little force. When the tube is attempted to be withdrawn, the compression ring compresses the fingers about the tube restricting release requiring exceedingly larger forces to remove the tube. The opposite end of the connector of the disclosed embodiment includes a quick connect for connecting a hose to the housing. This connector includes a compression sleeve which is mounted about the hose and compressed by a locking ring which locks to the housing.

Abstract: A diaphragm type valve with a single inlet port and two outlet ports in which the flow of fluids can be directed from the inlet port to one or the other outlet ports.

Abstract: An apparatus and corresponding method for electroplating wafers includes supporting a plurality of wafers on a backing board in the electroplating tank such that one surface of each wafer is masked from the electrolytic reaction. A programmable controller is used to regulate the waveform, frequency and duration of current passing between each individual wafer and a corresponding anode electrode during the electroplating process. Voltage is monitored between the wafers and the anode electrodes to ensure a proper electrical connection is maintained with each individual wafer during the electroplating process.

Abstract: The arrangement includes N inputs each having an input signal thereon from a different one of N groups of elements of a phased antenna array, where N is an even integer greater than one and where the array is pointed only at a desired signal source, a first circuit to produce from the input signals M sum signals each having the desired signal received by the array and at least one jammer signal and M difference signals each having only the jammer signal, where M is an integer, and a second circuit responsive to each of the M sum signals and at least a selected one of the M difference signals to produce a resultant output signal having the desired signal with the jammer signal eliminated or at least greatly reduced.

Abstract: A connector system in described which senses connector mating by sensing the disengagement of two sensor contacts in a first of two connectors, which enables such sensing contacts to be readily installed and which minimizes connector complexity and size. The first connector (12, FIG. 3) has a pair of sensing contacts (20, 22) with deflectable front end portions (106) that are biased together to touch each other, with the front end portions being accessible from the front of the connector. A second mating connector (14) has a separator (24) at its front end that is positioned to wedge apart the front end portions of the sensing contacts as the connectors approach a fully mated position.