Abstract: A compress/melt waste processor includes a frame; a chamber housing having alls which define a chamber therein; a ram movably disposed in the chamber; a sensor which senses pressure applied by the ram; an actuator operatively connected to the ram to move the ram; a chamber hatch upon which the housing is mounted, the chamber housing walls, the ram and the chamber hatch defining a space therebetween; and a device for feeding contaminated plastic waste into the chamber. The apparatus also includes a device for heating the housing walls, the ram and the chamber hatch; a device for cooling the housing walls, the ram and the chamber hatch, a device for detecting temperature of the housing walls, the ram, the chamber hatch and the contaminated plastic waste in the chamber; and a control device for controlling the actuator and the heating and cooling devices.

Abstract: A pre-stressed composite liner structure is provided for tribological syss typically associated a pump, engine, compressor or systems having bearings rotating within a journal. A hollowed ceramic core is concentrically wound with cladding material in the form of a filament or braid. The ceramic core and the wound cladding form an interference fit with one another to pre-stress the ceramic core in terms of tensile strength.

Abstract: A two probe time-of-flight system has a transmit probe emitting a diverging beam into a test material at a certain beam-center angle, and a receive probe with its main beam extending into the test material at that same angle, with the two probes being arranged symmetrical about a centerline normal to the test face. The transmit probe generates a pulse wherein a portion of the pulse reflects at the incident angle back to the receive probe, which detects the reflections and marks the reception time as a reference. A sampling unit captures subsequent echo energy returning from a region within the test material. The sampled energy above a given threshold is processed to identify the sample times relative to the marked reference time. The identified sample times are used to determine the depth that the echo energy originated from. Consecutive identified samples in the depth direction are used to detect the height of a flaw within the test material.

Abstract: A protective device for a container containing toxic or hazardous materia includes a shell, a mechanism positioned in the shell for sealing a puncture in the container so as to prevent release of the toxic materials from the container and a mechanism for attaching the shell to the container.

Abstract: An infeed hopper with a pivotable throat portion for feeding material into processing device. The pivotable throat portion has a first position in which it guides feed material from an inlet of the infeed hopper toward the processing device, and is movable from the first position so as to move the feed material through an outlet of the infeed hopper toward the processing device, particularly for forcing jammed material into the processing device. In another position, the pivotable throat portion provides access into the processing device for cleaning and maintaining the processing device.

Abstract: A process for conveniently producing microcapsules containing a gelatin wall crosslinked with quinone and a core of an active compound such as a fouling reducing agent, particularly a tributyl tin chloride, involves use of a simple or complex coacervation technique. The quinone crosslinking provides microcapsules of excellent strength, storage stability, and resistance to aqueous exposure, such that the rate of release of the fouling reducing agent can be controlled with precision.

Abstract: An internal combustion engine is constructed with metallic parts in its rons which are subjected to high stress (temperature, pressure) during combustion and polymeric materials in its regions which are subjected to relatively lower stresses. The integrated construction helps realize increased power densities and reductions in engine noise without compromising engine performance. V-configuration Diesel engines particularly benefit from this construction.

Abstract: A coupling stud assembly for coupling together a pair of flanges. A stud ing a tapered surface is inserted into respective overlapping through-holes provided in the flanges so that a space is defined between the stud and inner walls of the holes. A wedge is fitted into the space and is pressed by a wedge spacer so as to tighten contact between the stud and the inner walls of the through-holes. Nuts are provided on threaded ends of the stud to securely couple the flanges together. This arrangement provides a tight, vibration-free coupling between the flanges.

Abstract: An impeller of an impeller assembly for a processing device has a spiral ove formed in a circumferential side face so that material entering a clearance space between the circumferential side face of the impeller and inner circumferential walls of the processing device is guided out of the clearance space when the impeller assembly is rotated. The spiral groove prevent material from lodging in the space and jamming the impeller assembly.

Abstract: The present invention relates to acoustic and vibration attenuation compoe material, particularly to damping tiles of the Type VI class 1, suitable for use in aircraft, ship and submarine applications, that is inexpensive, does not result in an unacceptable weight penalty, and is conformable-in-place to complex curvatures. The present acoustic and vibration attenuation composite comprises a constraining layer of at least one ply of graphite fabric together with curable phenolic resin bonded to a viscoelastic layer.

Abstract: Improved acoustic damping materials comprise interpenetrating polymer netks having a soft polymer component and a hard polymer component. The soft polymer component, constituting from 50 to 90 percent by weight of the material, is a polyurethane made by polymerization of a diisocyanate with a polyether glycol, and the hard polymer component is made by polymerization of bisphenol A diglycidyl ether, with boron trichloride amine complex as a curing agent.

Abstract: Improved acoustic damping materials comprise interpenetrating polymer netks having a soft polymer component and a hard polymer component. The soft polymer component, constituting from 50 to 90 percent by weight of the material, is made by polymerizing an aromatic diisocyanate with a polyalkylene ether glycol, and the hard polymer component is an acrylic polymer made by polymerization of the alkyl esters and alkylene diesters of acrylic and/or methacrylic acid, e.g. n-butyl methacrylate and tetramethylene glycol dimethacrylate. The curing of the mixture is carried out at room temperature.

Abstract: A heat exchanger for use in exchanging heat between corrosive or electrolc fluids has wetted components which are comprised of corrosion and erosion resistant materials. The use of corrosion and erosion resistant tube sheets, shell, and tubes permits the heat exchanger to operate at high flow rates to produce turbulent flow through the inlet tube sheet and tubes, thereby optimizing transfer efficiency between a corrosive fluid in the tubes and the regenerated fluid pumped through the shell.In order to eliminate problems of temperature gradient and vibrations at the area where the tubes are joined to the inlet tube sheet, the shell is comprised of an inner and outer shell section to form annular flow diverting chambers therebetween. The inner shell section of each chamber is apertured so that flow is diffused over the entire surface, thereby avoiding direct impingement of fluid over the tubes.

Abstract: A system of modular electrohydraulic servovalves is centrally controlled may be used to control the operation of critical hydraulic actuators. A programmable controller operates a group of modular servovalves which each deliver a portion of the total actuator fluid requirements. The flow rate, valve position, and valve pressure of each servovalve is monitored by the controller and compared to expected values in memory to determine whether a servovalve malfunction exists. If so, the controller maintains the required flow rate to the actuator by closing the malfunctioning valve and either activating a spare or proportionally increasing the flow rates of the remaining servovalves to compensate for the loss.

Abstract: A method of producing an ethynyl aromatic aldehyde comprises reacting a protected copper(I) acetylide salt with a halogen substituted aromatic compound to produce a protected ethynyl aromatic aldehyde.The protected ethynyl aromatic aldehyde may be deprotected to yield an acetylene terminated aromatic aldehyde which is useful for making acetylenic Schiff's base monomers and conductive polymers thereof.

Abstract: A control stator comprising a plurality of stationary vanes, ribs, or cavities is provided in a centrifugal pump having a shrouded impeller. The function of the control stator is to slow the swirl of fluid in the cavity between the casing and the impeller front shroud and thereby provide a very cost effective solution to the problem of excess axial thrust. The control stator is a simple, inexpensive non-rotating part that can be affixed in an existing space in the pump casing between the casing wall and the front shroud of the impeller.

Abstract: A fire protective coating and method for applying same to a composite strure are provided. The coating is a composition of matter comprising a phenolic resin and strength reinforcing fibers embedded within the phenolic resin. The method of coating the structure with the composition of matter uses a phenolic resin in the liquid state. In this way, a mixture of the phenolic resin and strength reinforcing fibers can be applied to the structure's surface by conventional spraying techniques. As the mixture on the surface cures, a fire protective coating is formed on the structure's surface.

Abstract: To reduce the total ship resistance and to improve a propeller efficiency and cavitation performance due to the reduced thrust loading on the propeller for ships or vessels having a sonar dome or an equivalently shaped designs located below the baseline of the hull, a teardrop-shaped bulbous bow is attached to the ship stem bow between the forward perpendicular of the bow and 12.7 ft forward of the forward perpendicular of the vessel, inclusive, and between the ship design waterline and the baseline. The bulbous bow is separate and discrete, and spaced from the sonar dome and has a shaped of a teardrop. The teardrop shaped bulbous bow is mounted to the ship stem bow with the round end portion pointing in the forward direction and the pointed end portion pointing in the aft direction.

Abstract: A limp propeller for underwater use with a high mechanical damping ability o absorb so-called broadband vibration noise is comprised of a fabric-like material, preferably made of braided high tensile strength material such as fiberglass or graphite fibers. The fabric is devoid of any stiffening plastic or epoxy matrix material. Rather a flexible matrix material having relatively large hysteretic losses when deformed o cyclically in place of the stiffening plastic or epoxy matrix, or no matrix material at all is used in the present invention. The flexible matrix material or the complete absence of any matrix material renders the propeller blade relatively limp to flexure, thereby reducing its acoustic radiation damping or radiation efficiency.

Abstract: An E-R hydraulic control valve that has two or more surfaces that can be moved relatively to one another to adjust a flow orifice size while maintaining a control voltage gradient across the E-R fluid and to seat one surface against the other to shut off fluid flow. Combining movable mechanical fluid flow elements with E-R fluid control allows initial tuning of the valve to a particular application by mechanical restriction of an orifice, and E-R operating control of the fluid. Seating the mechanical surfaces provides a fail-safe shut-down mode.