Abstract: A method is provided for making cationically polymerizable aromatic polypropenylethers and to the aromatic polypropenylethers made thereby. Aromatic polyalkylene glycol prepared from the corresponding polyphenol is reacted with an allylhalide to produce aromatic polyallylether which is thereafter isoemrized to the corresponding cationically polymerizable aromatic polypropenylether.

Abstract: Zirconium-based corrosion resistant alloys are provided primarily for use as a cladding material for fuel rods in a boiling water nuclear reactor, the alloy in one embodiment consisting essentially of about 0.5-2.0 percent by weight of tin, about 0.5-1.0 percent by weight of a solute, the solute being composed of a member selected from the group consisting of molybdenum, tellurium and mixtures thereof, or alternatively, the solute will contain niobium in combination with molybdenum and/or tellurium and the remainder being zirconium, and in another embodiment the alloy consists essentially of about 0.5-2.0 percent by weight of tin 0.3-1.4 percent by weight of a solute, the solute being composed of tellurium, and the remainder being zirconium.

Abstract: The invention relates to a method of preparing aromatic polycarbonate according to the two-phase interface process. The molecular weight is controlled by the addition of a chain stopper. The use of a phenolic chloroformate as a chain stopper leads to a polycarbonate having a low content of volatile constituents.

Abstract: An industrial rated molded case circuit breaker having an electronic trip circuit contained within the circuit breaker enclosure includes a reset spring in cooperation with the circuit breaker latch spring to insure manual reset of circuit breaker after an automatic trip function. The reset spring allows the circuit breaker latch assembly to be manually reset upon minimum travel of the circuit breaker operating handle due to internal circuit breaker component space restrictions. The circuit breaker latch assembly is robotically loaded to the operating mechanism which is then attached to the circuit breaker case by an automated fastening process.

Abstract: A common island complementary-metal-oxide semiconductor device comprising an island of semiconductor material disposed on an insulating substrate is disclosed. Both N-channel and P-Channel transistors are formed in the common island of semiconductor material, but the gate electrode does not extend over the sidewalls of the silicon island. In order to electrically isolate the source and drain regions for each transistor, the areas of the silicon island outside of the channel region are doped with the appropriate dopants to form back-to-back diodes in series with respect to the source and drain regions. Additionally, a diode is disposed between both the N-channel and P-channel transistors to electrically isolate the two transistors.

Abstract: Extrudate of polyphenylene ether-styrene resin blends having effective amounts of an organoamine salt has been found to have improved flame retardance.

Abstract: Novel coating compositions contain a radiation polymerizable acrylic monomer or oligomer and an ultraviolight-light absorbing effective amount of a UV-absorbing multimeric benzotriazole compound.

Abstract: Several embodiments are disclosed of a modulation equalization network associated with a phase locked loop to achieve frequency independent modulation of the VCO. The equalization network is disposed to introduce the modulation signal into the control loop ahead of the loop filter but after the phase detector output. The interposed equalization network requires only a single input port to achieve a flat modulation response thereby lending itself to a modular implementation. The modulation processing is performed totally outside the phase locked loop. The network serves to provide a boost to low frequency signals from the modulation source using an integrator network while providing a high frequency response that is essentially the inverse of the phase locked loop filter response.

Abstract: Polyphenylene ethers having chemically combined aminoalkyl groups are neutralized with a Bronsted acid to produce flame retardant polyphenylene ether Bronsted acid amine salts. The polyphenylene ether amine salts can be blended with polystyrene to produce flame retardant blends.

Abstract: A novel devitrifying frit is disclosed which has a coefficient of expansion essentially the same as that of silicon. The subject frits have a high softening temperature and excellent reheat stability which make them useful in ink formulations for forming dielectric layers in multilayer circuitry. The frits are also suitable for use as a substrate material for direct mounting of silicon chips or for use in thick film via-fill inks.

Abstract: A cooking appliance equipped for indoor grilling includes an integrally formed, sheet metal reflector pan interposed between the grill member and the drip pan. The reflector pan has a bottom wall which extends beneath the heating element and four generally upwardly extending side walls to shield the area laterally adjacent the grill area from the radiant energy of the heating element. The reflector pan is configured between its corners to define an air gap between the reflector pan and the adjacent cooktop which provides an air flow path between the area above the cooktop and the area between the drip pan and the reflector pan. When the heating element is energized cooling air is drawn by convection from above the cooktop downwardly through the air gap into the area between the drip pan and the reflector pan and upwardly through narrow slots in the bottom of the reflector pan.

Abstract: Apparatus for containing liquid coolant within a liquid cooled transformer includes a vessel having opposing sides for forming a chamber. The chamber is prevented from decreasing below a predetermined volume limit when compressive force is applied to the vessel by providing separation elements which are coupled to at least one of the sides and extend into the chamber for contacting the other side when the limit is reached, thereby preventing further volume reduction of the chamber. When a liquid under pressure is supplied to the chamber the vessel tends to expand, such that when the apparatus is disposed between laminations of a core of a transformer for cooling the transformer, force is exerted on the laminations, thereby ensuring that the laminations do not loosen under adverse operating conditions.

Abstract: An improved method for forming a protective coating on a plastic substrate is disclosed, comprising the application of a curable coating composition which contains at least one alkyltrialkoxysilane in a water/organic solvent dispersion of the colloidal silica onto the substrate, and then curing the composition at elevated temperatures with an effective amount of a tetrabutylammonium carboxylate catalyst such as tetra-n-butylammonium acetate. This invention also includes improved curable silicone coating compositions containing such a catalyst.

Abstract: Polyalkoxysilyl-terminated polydiorganosiloxanes which are relatively stable in viscosity over prolonged storage periods are prepared by endcapping a silanol-terminated polydiorganosiloxane in the presence of a catalytic amount of an acidic amine salt which subsequently decomposes to substantially inert products, preferably an amine salt of formic acid, and in the absence of silicon-nitrogen compounds and enoxysilanes normally used as catalyst quenchers and scavengers. The products are useful for the preparation of scavenger-free room temperature vulcanizable compositions, particularly when combined with certain N-alkoxy-silylalkyl-substituted compounds as adhesion promoters.

Abstract: A self-cleaning over door latching mechanism is provided with a locking arrangement responsive to the oven cavity temperature, which includes a locking pin moved by a snap action bimetal member mounted in thermal communication with an oven cavity wall. The bimetal member moves the locking pin to a locking position when the temperature sensed by the bimetal rises above the locking temperature. In its locked position the locking pin prevents the opening of the latch until the temperature in the oven cavity falls below the locking temperature. In its locked position the locking pin also actuates a lock switch electrically connected in parallel with a thermal limit switch. The thermal limit switch provides over temperature protection for the cavity when operating in the normal cooking modes. When actuated, the lock switch shunts the limit switch thereby enabling the temperature in the cavity to rise to the self-clean range.

Abstract: An aqueous electroless gold plating composition is disclosed comprising a water-soluble alkali metal monovalent gold cyanide complex, a water-soluble alkali metal complexing agent and hydrazine or its derivatives. A method for electrolessly plating gold onto a nickel substrate is also disclosed.

Abstract: Blade carrying means for variable pitch propulsor blades of a gas turbine engine are disclosed. The blade carrying means comprise dual, axially positioned rings and a plurality of generally cylindrical bearing journals supported between the rings. Each of the journals has a radially outer and inner edge and is adapted to support a single propulsor blade. The blade carrying means also comprise stiffening means, such as a bulkhead attached to the inner edge, for preventing distortion of the journal inner edge.

Abstract: A method is provided for making 9,10-dithiaanthracene-2,3,6,7-tetracarboxylic acid dianhydride. Polyimides having improved oxidative stability also are provided which can be made intercondensing organic diamine and the aforementioned dianhydride or a dianhydride mixture.

Abstract: A full bridge integrable dc-to-dc converter is described which includes four FET switching devices wherein the parasitic capacitors of the switching devices exchange energy with the leakage and magnetizing inductances of the converter transformer. Since energy is exchanged between the passive components of the circuit, the switching is accomplished in a substantially lossless manner. Energy not transmitted to the load is returned to the source rather than being dissipated in the active devices of the converter. Further, single frequency operation is accomplished over a broad range of output conditions by phase shifting the converter legs relative to one another.

Abstract: An apparatus for the inspection of a stack of cylindrical objects such as roller bearings, uses an eddy current probe. The probe is positioned at an angle with respect to the surfaces of the objects in order to achieve an acceptable signal and then the objects are rotated while the probe is advanced along them to fully scan the surfaces.

Abstract: In a hydraulic system of a control rod drive for insertion of control rods, a test apparatus and test process is disclosed for determining the integrity of the hydraulic system check valve for preventing inadvertent control rod ejection responsive to the reactor pressure. The check valve is located between a hydraulic valve for causing rod insertion and the hydraulic cylinder. In this interval downstream of the check valve, alteration is made to the hydraulic path by the installation of a conduit with a quick disconnect connected through an isolation valve. Test apparatus for temporary connection at the disconnect is disclosed consisting of a small positive displacement piston and cylinder. The small positive displacement piston and cylinder connects to the quick disconnect through a complementary quick disconnect fitting and a rapidly opening toggle valve. Provision is made for timing the excursion of piston in the piston and cylinder preferably by end of stroke microswitches.

Abstract: An electrical connector having a pair of opposed torsion blades that are twisted toward each other that provides double torsional contact action when a contact pin is inserted therein for reliably maintaining the contact pin between the blades. An electrical socket for a bi-pin fluorescent lamp is provided having a pair of contact chambers and a double torsion blade connector mounted in each chamber.

Abstract: An addition cured rubber containing vinyl end-stopped diorganopolysiloxane and vinyl functional silicone resin is disclosed to provide superior durability when applied to a ship's hull as an anti-foulant or foul release coating.

Abstract: An apparatus for transferring headed pins includes a frame having a pair of spaced, parallel side rails and an end plate secured between the side rails at one end thereof. A pair of plates are secured together and connected between the side rails at the other ends thereof. The pair of plates have at least a portion of their opposed surfaces spaced from each other, and have aligned holes therethrough for receiving the pins to be transferred. A third plate having openings therethrough is slidable in the space between the pair of plates. An operating rod is connected to the third plate and can move the third plate between a first position in which the holes in the third plate are aligned with the holes in the pair of plates, and a second position in which the holes in the third plate only partially overlap the holes in the pair of plates. With the third plate in its second position, pins can be inserted through the holes and will not pass completely therethrough so that they will be held in the apparatus.

Abstract: In a control rod for a nuclear reactor having a cruciform shape with four flat planar members, an improved membrane for safeguarding against crevice cracking corrosion is disclosed. Each of the four flat planar members of the control rod is fabricated from side-by-side tubular members containing sealed neutron absorbing poisons. Each of the tubular members has square outside sections. These square outside sections are welded together to form the flat planar members of the control rod. The improvement includes a protective membrane wrapped over the structural flat planar member. The protective membrane surrounds the member and is maintained to the planar member under compression by ambient reactor pressure. The membrane provides an additional margin against crevice corrosion cracking by preventing the water of the reactor from coming into contact with the welded side-by-side square sectioned tubular members.

Abstract: A real time computer image generation system incorporating comprehensive distortion correction in which a predistorted image is computed and placed on a projection raster prior to projection onto a view screen in order that the image as seen by a viewer appears correct. A method for implementing comprehensive distortion correction in real time utilizes fixed transfer characteristics of a projection lens coupled with scene by scene translation of each of a plurality of predetermined points from a projection raster to a location on a view screen. Each image is divided into a plurality of spans and the span corners are mapped from the projection raster to the view screen. The location of image vertices on the view screen are determined with respect to the viewer and the vertices are mapped to corresponding locations on the projector raster.

Abstract: A process of producing a thermoplastic article having resistance to degradation by ultraviolet radiation, which comprises impregnating the surface of the thermoplastic article with a UV-absorbing effective amount of a solution of a multimeric benzotriazole compound at a surface impregnation effective elevated temperature.

Abstract: A dedicated set of four input pads or pins of an LSI chip provides access by a serial data line to macrocells or other partioned logic of the LSI for individual test. A macrocell is connected to the remainder of the logic by a pair of multiplexer/test register combinations, one at the input, and one at the output of the macrocell. In a normal operation mode, the multiplexers connect each macrocell to the next, for normal signal flow. Under control of test signals, the test registers may be selectively loaded with data from the serial data bus, and the multiplexers may be switched to apply test data from the test register to a macrocell. The output multiplexer of the macrocell routes the resulting processed test data to the output test register, so it may be read out in serial form while normal operation resumes.

Abstract: An automated method of brazing to join two metal parts together at a joint with a braze alloy. The two parts are moved to a brazing station and maintained in a fixed position. The two metal parts are heated at the joint at a high heat rate to a predetermined temperature which exceeds the temperature that would melt the braze alloy and less than a temperature that would cause degradation of the metal parts. The temperature of the metal parts in close proximity to the joint is detected and when the first predetermined temperature is reached, the heating rate is reduced to a lower heat rate sufficient to keep the braze alloy in a liquidous state. The braze alloy is introduced to the joint between the two metal parts while they are being heated at the lower heat rate to join the two parts together and then the joined two metal parts are removed from the brazing station.

Abstract: An electronic remote data recorder records pulses representing usage of a commodity such as, for example, water, gas or electricity from a plurality of consumers. The data from each consumer is stored in a respective data storage device. Each data storage device is associated with an interval data directory which stores the times at which significant events, affecting the data in the data storage device occurred. Thus, the data in the data storage device is compact, without requiring a contemporaneous time code for each data item. Data integrity is retained over a period of power outage in a non-volatile storage device. Initial, post-installation programming is enabled by comparing the data pattern in the non-volatile storage device with a predefined data pattern that is expected to exist once the apparatus has been programmed. A write-protect switch prevents programming during an incoming call after the initial programming.

Abstract: In a video signal expanding/compressing system including a video signal interpolator, video signals are peaked prior to interpolation. The amount of peaking is controlled in response to a signal representative of the distance between a pixel of an expanded/compressed video signal and a corresponding pixel of an original video signal.

Abstract: This real time adaptive control and method of controlling a spot welding process compensates for electrode wear, oxidized surfaces, fit up variations and machine variations. Workpiece thermal growth is the measurement discriminant and the welding machine heat command is the control input. The control utilizes a least squares estimator to monitor the process and workpiece displacement, a precompensator to shape a desired displacement trajectory command, and a model reference control with a Smith-predictor to compensate for time delays and a proportional-integral-derivative compensator. The model reference control has a mathematical model of the spot welding process and calculates an estimated displacement using a predicated process gain and bias calculated by the estimator. The estimated displacement is compared to the precompensator displacement trajectory and an error is generated which regulates the heat command through the PID compensator.

Abstract: A system for cranking/starting a combustion engine and for generating electrical power during engine operation uses an inverter-driven, high efficiency permanent magnet synchronous machine as a cranking/starting motor during a start mode and as an alternator during a run mode. A modified planetary gear assembly provides sufficient torque multiplication during the start mode to enable the synchronous machine to start the engine. One-way clutches allow the planetary gear assembly to provide the torque multiplication in the start mode and 1:1 coupling between the engine crankshaft and the shaft of the synchronous machine after the engine has been started and is operating.

Abstract: A detector for a first continuous-wave-modulation signal is supplied an unmodulated carrier signal in addition to the first continuous-wave-modulation signal. Means are provided for modulating the unmodulated carrier signal responsive to output signal from the detector to generate a second continuous-wave-modulation signal encoding a previous value of output signal, as delayed to provide a predicted input signal, in the same way the first continuous-wave-modulation signal encodes the input signal. The first and second continuous-wave-modulation signals are linearly combined so as to cancel the correlated portions of them and to develop a third continuous-wave-modulation signal with suppressed carrier, which is detected to recover an error signal. This error signal is combined with the predicted input signal obtained by delaying a previous value of said output signal, thereby to generate the current output signal of the detector.

Abstract: This dual voltage transformer comprises a primary winding having a tap at a location intermediate its length, a first termination for connection to line voltage, and a second termination for connection to ground. When the transformer is to be operated at a relatively high voltage, the first termination is connected through a dual voltage switch to line voltage; and when the transformer is to be operated at a relatively low voltage, the tap is connected through said switch to line voltage. First varistor means is connected across the primary winding between said first and second terminations both when the transformer is operated at high voltage and at low voltage; and second varistor means having a lower breakover voltage than the first varistor means is connected between said tap and ground when the transformer is operated at low voltage.

Abstract: A semiconductor wafer having a substrate with an epitaxial layer thereon includes a semiconductor device electrically isolated from the substrate as well as from any other devices in the wafer by electrical isolation structure comprising semiconductor material. The semiconductor device can accordingly be operated at high voltage with respect to the wafer substrate. The isolation structure in one form of the wafer comprises an N+ high voltage tub included in the wafer and a P+ ground region situated in the expitaxial layer, adjoining the substrate, and horizontally circumscribing the N+ high voltage tub and being spaced therefrom by a minimum layer extent of a portion of the epitaxial layer that is of N conductivity type.

Abstract: This invention concerns an asymmetric impact resistant laminate having at least four lamina bonded by a plurality of adhesive interlayers and alternating in composition between glass and polycarbonate from a front impact receiving lamina of glass to a back spall resistant and controlled thickness lamina of polycarbonate.

Abstract: The invention relates to a type of proximity sensor. In one form, two sinusoidal signals travel along two transmission lines near an object. When the distance between one or both of the lines and the object changes, the speed of travel of one or both of the signals changes. There is a correlation between the speed change and the distance, thus allowing one to infer distance from speed change. One way to measure the speed change is to measure the phase relationship between the two signals.

Abstract: Precision control over the cutting force during robotic deburring and edge contouring is obtained by use of a "zero spring rate" driver. The driver consists of an air cylinder with a low friction piston. An accumulator is used in between an air supply line and the air cylinder such that the air pressure against the piston is constant. The driver is used to position or move a moving portion of an ultralow friction ball slide relative to a fixed portion of the ball slide. The arrangement avoids inaccuracies in a metal removal process which might otherwise be caused by robot path errors, part setup errors, and robot stepwise motion effects.

Abstract: A digital logic circuit is broken into functional blocks, each having a path from its output port to a chip level output port. No two input patterns to that path produce the same output pattern on that path and for every path input pattern there is a one-to-one relation with the path output pattern regardless of the transformation of that pattern by the path. All other path inputs are independent of the path test patterns such that a block test output pattern applied to that path is not fault affected by those other path inputs. The circuit is partitioned into testable blocks whose outputs are coupled by such paths to observable chip output ports. The chip level tests for all block test patterns are screened to eliminate redundant block tests to produce a practical set of test vectors.

Abstract: The present invention relates to a multilayer article formed by the coextrusion of a polyester and polycarbonate. The polyester and polycarbonate are extruded into a film wherein the polyester forms the top and bottom layers of the film and the polycarbonate becomes the inner layer. The films may be thermoformed into articles which exhibit excellent strength and impact values.

Abstract: Thermoplastic polymeric amides are disclosed which have utility as hot melt adhesive compounds. The compounds are the reaction product of a polyoxyalkylene diimide diacid and a diamine.

Abstract: Electronic control circuit for use with electrical load powering apparatus having a load connection, a high voltage supply connection and a common, and with an electronic switch to switch the high voltage supply connection to the load connection. The electronic switch has an input and is responsive to a voltage difference between the input and the load connection. The load connection is subject to high voltage excursions relative to the common due to the switching. The electronic control circuit includes a transformer having a primary winding and a secondary winding for providing at least one pulse output from the secondary winding, the transformer having an inherent interwinding capacitance between the primary winding and the secondary winding. A circuit connected to the secondary winding couples the pulse output from the secondary winding between the input of the electronic means and the load connection when the pulse output is present.

Abstract: A location dependent signal processor for radiant energy detector arrays which include two-dimensional spatial filtering and/or background normalizing, with means providing programmed control of the signal processor filter weighting and normalizer thresholding operations as a function of the location of each successive output pixel with respect to the periphery of the detector array, so as to enable the signal processor to minimize the effects of initialization and wrap-around pixels on the processor signal output.

Abstract: A U-shaped subslot liner is disposed in the bottom of a slot in the rotor of a dynamoelectric machine. A stack of conductors and insulating layers is supported by arms of the subslot liner durig manufacture. The subslot liner, together with the lower conductor, defines a coolant channel for conveying a gaseous coolant to the conductors. A slot armor lines the sides of the slots where it is retained against centrifugal acceleration by the subslot liner. In one embodiment, the slot armor passes completely under the subslot liner. In other embodiments, the slot armor is in two pieces, each affixed to the subslot liner.

Abstract: Hot electron injection into the gate oxides of MOSFET devices imposes limitations on the miniaturization of such devices in VLSI circuits. A buried channel with a graded, buried spacer is provided to guard against hot electron trapping effects while preserving process and structure compatibility with micron or submicron VLSI devices. The channel current is redirected into a buried channel at a distance away from the interface in the vicinity of the drain region where the hot electron effect is most likely to occur.

Abstract: Polyphenylene ether-polyamide compositions which are compatibilized and have high impact strength and solvent resistance are prepared by melt blending a carboxy-functionalized polyphenylene ether with a polyamide. The carboxy-functionalized polyphenylene ethers contain at most one carbon atom separating the carboxy group from the aromatic ring and may be prepared by such reactions as metalation-carbonation or redistribution (equilibration).

Abstract: An angular momentum mass flow meter with an optical fiber readout extending into and out of the flowmeter housing.

Abstract: A dynamoelectric machine has a housing with generally axially extending radially spaced apart inner and outer circumferential surfaces with a generally annular external rabbet in said outer circumferential surface. An end frame is arranged in a preselected assembly position on the housing and has a generally annular internal rabbet received generally in mating engagement about the external rabbet when the end frame is in its preselected assembly position.