Abstract: A feedback loop is provided within an inverter feedback control system for modifying reference voltage to effect modifying output voltage from the inverter circuit thereby to maintain constant average rectified resistive current to a complex load, compensating for variations in load current which result from a changing characteristic of the complex load.

Abstract: Polyphenylene ether-poly(vinyl aromatic) compositions are prepared by oxidatively coupling a phenol dissolved in a basic reaction medium comprising a vinyl aromatic compound in the presence of a manganese chelate catalyst, selectively liquid-liquid extracting base-reactive by-products, then thermally polymerizing the vinyl aromatic compound.

Abstract: Particulates are both filtered from a product stream and recycled to an associated reactor by a filtration means disposable in a product stream outlet port of the reactor.

Abstract: Reaction vessel construction is provided whereby in the practice of the invention disclosed in U.S. Pat. No. 3,297,407 - Wentorf, Jr. diamond seed material is isolated from the main supply of catalyst-solvent metal by an inert barrier insoluble in the catalyst-solvent bath. One or more restricted diamond growth paths (e.g. small diameter wires of catalyst-solvent) are provided through the inert barrier interconnecting diamond seed material and the main supply of catalyst-solvent metal. In this way the diamond seed material cannot be eroded or destroyed by exposure to the bath of catalyst-solvent metal and a controllable limit can be placed on the size of the single diamond seed crystal ultimately presented to the bath via any given growth path.

Abstract: A particulate dispersion of .alpha.-alumina, magnesium oxide and an additive selected from the group consisting of zirconium oxide, hafnium oxide and mixtures thereof, is formed into a green body and sintered in hydrogen producing a theoretically dense ceramic with improved optical transmission properties.

Abstract: A circuit for sensing the magnitude of an AC signal applied to the circuit includes control means for reversing the polarity of the AC signal to thereby generate an output signal which is proportional in amplitude to the magnitude of the AC signal and which has a phase, with respect to the phase of the AC signal, determined by the control means. The control means also provides the capability of generating output pulses from the circuit which have an amplitude proportional to the magnitude of the AC signal and a pulse-width-spacing proportional to the duty cycle of a pulsating control signal applied to the control means.

Abstract: An interfacial polymerization process for preparing a high molecular weight aromatic carbonate polymer by reacting a dihydric phenol with a carbonate precursor in the presence of a catalytic amount of a substituted pyridine or a salt of a substituted pyridine.

Abstract: An ice dispenser storage assembly for use in a freezer compartment of a refrigerator including a motor-driven ice dispenser. There is provided a cover secured to the inside of the freezer compartment and an ice storage receptacle movable from a first ice storage position to a second ice transfer position along and below the cover. Provision is made to stop the ice storage receptacle in the second ice transfer position and provision to energize the ice dispenser when the ice storage receptacle is in the second position and deenergize the ice dispenser when the ice storage is not in the second position.

Abstract: A power plant includes a primary and a secondary power cycle, with the secondary power cycle including a thermal reservoir adapted for the absorption of heat rejected from the primary power cycle during the simultaneous generation of power from the secondary power cycle. Heat is withdrawn from the thermal reservoir during periods of reduced power demand, allowing latitude in the scheduling of heat rejection from the power plant.

Abstract: A laminated rotor for a dynamoelectric machine is formed by stacking a plurality of sets of punched laminae on one another to define axial coolant passageways, radial vents and coolant ducts and axial conductor-receiving slots through the assembled rotor. Each of the sets of laminae include a group of main rotor laminae, a group of vent laminae, a group of duct laminae and a transition lamina positioned between the vent laminae and duct laminae. In addition, a transition lamina is positioned between each set of stacked laminae thereby to arrange one transition lamina on opposite sides of each group of duct laminae, to effectively block molten metal from flowing out of the conductor slots into the coolant ducts of the duct laminae.

Abstract: Electrical capacitor has guard placed over its external terminals to provide space for displacement of the terminals in the operation of the internal pressure sensitive interrupter device when the capacitor is embedded by encapsulating material in an electrical ballast container.

Abstract: A grinding wheel dressing tool having a dressing edge consisting essentially of a side dressing edge angle ranging between 30.degree. and 75.degree. wherein the side dressing edge is at least about 0.5 millimeter in length and an end dressing edge angle between 5.degree. and 30.degree. wherein the end dressing edge is at least about 0.5 millimeter in length, said dressing edge having a lip angle ranging from 90.degree. to 120.degree., and engaging the periphery of a rotating grinding wheel with said dressing tool at a negative side rake angle ranging from -5.degree. to -35.degree..

Abstract: A stacked thermostat assemby includes a lower heat deformable blade, a conductive intermediate stiff spring blade, and a conductive upper less stiff spring blade with all the blades being supported, secured, and spaced apart at one end by interposed insulators. Electrical contacts on the conductive blades include structure for transmitting movement between the heat deformable blade to the upper blade to make and break an electric circuit and control heat to a medium sensed by the thermostat such as an iron soleplate on which the thermostat may be mounted. To this standard construction an improvement is provided in the temperature setting control mechanism of single structural integral bracket extending over the blades and mounted on and above the supported end, the bracket having an enlarged integral portion on its free end. A smooth unobstructed bore in the integral portion forms an elongated bearing guide between the ends of and over the blades.

Abstract: In a jet pump for a nuclear reactor a slip joint is provided between the mixer and diffuser sections thereof to facilitate jet pump maintenance and to allow thermal expansion. To limit leakage flow through the slip joint to a rate below that which causes unacceptable flow induced vibration of the pump, there is provided a labyrinth seal for the slip joint in the form of a series of flow expansion chambers formed by a series of spaced grooves in the annulus of the slip joint.

Abstract: A method of utilizing a coil injection tool pack, also referred to as coil injection tooling, is disclosed. The method involves placing a tool pack in winding turn receiving relationship with coil winding apparatus having a tool pack nest. The tool pack is moved laterally, relative to the longitudinal extent of the elongate elements, toward the tool pack nest at the winding station. Thereafter, mutual alignment of the tool pack and tool pack nest is assured, and the base of the tool pack is clamped against a tool pack retainer means. Dynamoelectric machine windings are then draped on the tooling pack and subsequently, the tool pack is released and transported to a tool pack nest on a coil injection machine power unit. The tool pack then is clamped on the power unit, a core is placed on the tool pack, and winding turns previously disposed on the tool pack are axially injected into the stator core.

Abstract: A flexible coupling for drivingly interconnecting a driving member and a driven member. The coupling includes a first coupling arrangement adapted for connection to the driven member and a second coupling arrangement adapted for connection to the driving member. The coupling arrangements are interconnected by a plurality of flexible arms. Each arm includes first and second curved portions connected by a planar portion.

Abstract: A method for producing varistors and varistor powder is disclosed in which the zinc oxide powder is predoped with certain desired impurities in order to keep these impurities out of the intergranular phase which is known to exist in sintered metal oxide varistors. In particular, certain trivalent dopants are added to increase the zinc oxide grain conductivity without the usually concomitant increase in higher leakage current. In particular, the method disclosed herein is especially important for the doping of varistor material with aluminum at low levels of concentration.

Abstract: A reverse air cycle type heat pump is provided that utilizes unidirection refrigerant flow wherein the condenser and evaporator retain their functions, but the air directed across them is redirected for different operations. The air cycle type heat pump is further provided with a secondary defrost circuit including valves which permit refrigerant flow to by-pass the compressor and the expansion device only when compressor operation terminates and the system pressure differential is equalized. This defrost circuit causes the relatively warm refrigerant in gaseous phase in the condenser to displace the relatively cold refrigerant in liquid phase in the evaporator with the flow continuing until the defrost system is completed.

Abstract: A heat-up/cool-down bimetal timer for an electric toaster wherein a unique screw fastener is provided for holding a calibration adjustment screw without being deformed during automated adjustment of the screw. The fastener is made from a blade of spring sheet metal that has an end turned on itself in the form of a cylinder for holding the calibration screw. Thus, the axis of the screw is parallel to or even in line with a plane that lies midway between the planes of the major surfaces of the sheet metal fastener. Accordingly, any automated screw driving equipment that may push downwardly on the head of the screw for adjusting it normally would not flex or bend the fastener in a plane perpendicular to one of its major flat surfaces.