Abstract: Foreign object ingestion damage detection and accommodation system for a gas turbine engine system having a gas turbine engine with multiple rotating members, such as a twin spool configuration. System includes speed sensors for sensing the rotational speed of at least two rotating members. Sensors are coupled to a controller which detects damage by comparing the sensed speed of the second rotational member to an expected speed. Expected speed is determined from the sensed speed of the first rotating member using a known characteristic relationship between the the first and second rotating member speeds for the given gas turbine engine design. Thrust loss accommodation is triggered when damage is detected. Accommodation mode provides a synthesized primary thrust control feedback signal in lieu of the sensed signal for a damaged rotational member. Synthesized signal is derived from the sensed speed for the undamaged rotational member.

Abstract: A heat recovery device for use with a portable incinerator. The heat recovery device comprises first and second legs which support a heat exchanger thereon. An air flow path is formed from the bottom to the top of the first leg, through the heat exchanger and from the top to the bottom of the second leg. An open space is provided between the two legs and below the heat exchanger. A portable incinerator may be placed within this open space. When solid waste is burned within the incinerator, the exhaust port of the incinerator lies below the heat exchanger. A blower attached to the lower portion of the first leg creates air flow through the heat recovery device such that the air is heated in the heat exchanger by heat produced from the exhaust port of the portable incinerator. A tube is then coupled to the second leg in order to direct the heated air flow to the interior of an adjacent building.

Abstract: Compositions and methods are disclosed for sanitizing aqueous media, which combine a chlorine-source composition and a glycoluril-source composition. The compositions are added together or separately, continuously or periodically, and by any of a variety of methods. The glycoluril compound stabilizes the chlorine and prolongs its useful life as a microbicidal agent.

Abstract: The present construction includes outer walls, roofs and/or floors in the form of an assembly of modular units. Each modular unit comprises a peripherally closed rectangular supporting frame with intermediate frame elements, several open compartments having all the inner breadth of the supporting frame and having respective heights equal to an integer submultiple of the height of said frame or to an integer multiple of said submultiple. Construction elements including a central embrasure part are arranged in said compartments and at least two facing parts are placed, respectively, on opposite sides of the supporting frame and fixed to the central embrasure part and/or to the supporting frame.

Abstract: An automatic water drain and priming pump for a fuel system in which a reversible pump is operable in a first direction to pump separated water out of a fuel filter and into a water drain, and further operable in a second (opposite) direction to pump fuel into the fuel filter in order to prime the fuel pump. Operation of the pump in the first direction to drain water from the fuel filter is initiated by water-in-fuel sensors within the fuel filter. Operation of the pump in the second direction to prime the fuel pump is initiated by manual activation of a switch during servicing of the fuel filter.

Abstract: A method for making tubular members, each of which is coated with a decorative layer that has a randomly distributed chip pattern, includes the steps of: (A) preparing tube products, each of which having two ends and an intermediate portion between the two ends; (B) preparing a mold having a plurality of mold cavities; (C) sleeving detachably a pair of positioning members around the two ends of each of the tube products for enclosing and centering the two ends, and placing each of the tube products and the positioning members associated therewith in a respective one of the mold cavities; (D) forming a covering around the intermediate portion of each of the tube products by filling each of the mold cavities with a coating composition containing chips; (E) removing each of the covered tube products and the positioning members associated therewith from the mold, and detaching the positioning members from each of the covered tube products; and (F) machining and polishing the covered tube products, and cutting off

Abstract: A deck of playing cards with a changing message provided on the edge thereof. In the preferred embodiment, the cards are tapered with a portion of the cards having a first set of letters provided on the edge thereof and with the remaining portion of the cards having a second set of letters on the edge thereof. A first message is provided when the first set of letters are adjacent the second set of letters whereas a second message is provided when the two sets are positioned apart. In an alternate embodiment, the first portion of cards have a narrow width whereas the second portion of cards have a wide width.

Abstract: A four wheel drive and steering system for a motor vehicle includes a splitter gear assembly coupled to the transmission for splitting rotational power between the front wheels and one set of wheels of a tandem rear wheel vehicle. A first drive train rotationally couples the front wheels to the transmission, while a second drive train drives the one set of rear wheels. The second drive train includes a pair of shaft assemblies, each corresponding to a respective rear wheel. Each of the pair of shaft assemblies includes a rear shaft extending substantially parallel to the longitudinal axis of the vehicle adjacent a vertical plane including the corresponding rear wheels, thereby providing clearance for the floor of a dropframe cargo compartment. A transfer gear assembly couples the corresponding rear wheel to the rear shaft of the shaft assembly. The steering system is coupled between the steering linkage for the front wheels and the other set of tandem rear wheels.

Abstract: The instrumentation comprises a pair of vertebral implants (1) provided with screws (4) for anchorage to two corresponding vertebrae located on each side of a damaged vertebra, and a plate (3) having two end portions (3a) for connection to the two implants, and equipped with serration (6, 15) for fixing it to the implants. The end portions (3a) of the plate have a rounded periphery and the instrumentation comprises fixing screws (50) having heads (51) which are rounded so that their surface is flush with the surface of the plate when they are anchored in the apertures of the implant and the apertures of the end portion (3a) of the plate. This arrangement ensures that the ends of the plate (3) do not come into contact with the vertebral discs when the angular position of the plate (3) relative to the implants varies, and reduces the overall size of the instrumentation.

Abstract: Described are novel triethylenediamine adducts of certain 4-hydroxy-substituted, 3,5-hydroxy-substituted and 2,3,4-hydroxy-substituted benzoic acid derivatives, and novel boron trifluoride complexes with cyclic amidines, which are useful for the conversion of thermosettable compositions. Also described are novel thermosettable compositions incorporating the adducts and complexes.

Abstract: A card system and method for accessing a public transit system that employs a card pre-encoded with trip data permitting a set number of trips on the transit system and a card processing unit to receive and process a card each time access to the transit system is desired. The card processing unit includes a time write head to record the time of current use on the card and a time read head to retrieve the time of last use from the card. A microprocessor computes the difference between the time of current use and the time of last use. A trip read head scans the encoded trip data to determine the number of trips remaining on the card and a trip write head is provided to write to the card to decrement the number of trips by a given amount after use. The trip write head and the time write head are employed only if the difference between the time of current use and the time of last use is greater than a preset period.

Abstract: A metal bellows for use in a mechanical seal is rolled from a flat sheet and seam welded along an axial diagonal line. The bellows includes corrugations or convolutions having inner and outer crowns of identical radii. The end corrugation or convolution at each end of the bellows is axially compressed to provide an annular double-thickness bearing and support surface against which an end ring is located in face-to-face connection. A similar bellows of multiple plies is similarly constructed using a plurality of tubular bodies.

Abstract: A process for the solventless polymerization of brominated styrenes includes blending monomers of brominated styrenes with a polymerization initiator, feeding the monomer/polymerization initiator mix into a prepolymerizer wherein the monomers begin to polymerize, and feeding the monomer/polymerization initiator mix and the partially polymerized bromostyrene into a screw-type extruder to drive the polymerization to a high degree of completion in a short period of time. Optionally, the monomers may be preheated before mixing with the initiator, or a heater may be included in the prepolymerizer.

Abstract: A protective wrap for use in packaging and shipping includes a plurality of flexible material strips whose length and width may be varied as well as the selected material and a plurality of relatively rigid material strips whose length would typically be the same length as the flexible material strips but whose width will vary depending upon the application. A suitable material for the relatively rigid material strips is corrugated paper or expanded polystyrene foam. The flexible material strips and the relatively rigid material strips are arranged side by side in alternating sequence and when a backing layer is not used, the strips are joined to each other by adhesive. When a backing layer is used the strips may either be joined together by adhesive or joined by adhesive directly to the backing layer.

Abstract: A combination pump and heat exchanger assembly in a manufacturing process temperature controller uses a cast metal pump case with two upwardly opening sockets receiving the lower ends of two tubes, one of them communicating through the case with the pump impeller intake and the other with the impeller discharge. Closed circuit and open circuit versions are shown. In both types, the tubes are constructed to function as tanks, at least one being a heat exchanger unit, and they are readily and removably secured to the case by threaded fasteners and are sealed therein by compression seals. The heat exchanger tubes employ electrical heating elements or chilled liquid piping units therein. A controller including a microcomputer responds to temperature of liquid pumped from the assembly through a process to be temperature controlled, and returned to the assembly, to control an electric heater and/or a motor-operated modulator valve discharging to drain while cool make-up water is admitted.

Abstract: A dental instrument for removing saliva from a patient's mouth is disclosed that includes a pair of tubes configured to be operatively positioned within the patient's mouth to support a pair of absorbent rolls at the sides of alveolar ridge. One of the tubes terminates at its proximal end in a suction adaptor having a sealing face for contact interface with a suction tube connected to a dental suction device. The proximal end of the other of the tubes intersects the first tube at its mid-length. An absorbent roll supporting perforated stem is removably inserted into the distal end of each of the tubes. Each stem includes a number of apertures in fluid communication with the passageways through the pair of tubes so that suction applied at the suction adapter operates through the apertures to remove fluid absorbed by the absorbent rolls. An adjustable clamping structure is connected to one of the tubes and is mountable under the jaw of the patient to support the instrument.

Abstract: A novel biopsy needle like surgical instrument to obtain both solid bone marrow biopsy and liquid bone marrow aspirate by a new method of obtaining both specimens in a single procedure are disclosed. The needle consists of two heads at the proximal end, two lumina inside its elongated body and two distal openings. Each head contains portal for entry for respective stylets for biopsy and aspiration. The distal end of the needle contains two openings leading to the lumina inside the needle meant for biopsy and aspiration respectively. The proximal one third of the needle is encased in a specially designed handle with grips for the index finger, the thumb and a cap for the hollow of the operators hand.Upon insertion of the needle in the cortical bone of the iliac crest of the patient the biopsy stylet is withdrawn. Further pushing the needle results in entry of the marrow cavity facilitating entry of a solid core of marrow in the hollow biopsy portion of needle lumen.

Abstract: A percutaneous catheter with encapsulating receptacle comprises a first catheter having a proximal and distal end, several struts attached to the distal end of the first catheter and extending distally therefrom in a cup-shaped form, a second, inner catheter received within the first, and a pocket-shaped sheath received between the several struts and opening in the distal direction, the sheath having a proximal portion secured to the distal end of the second, inner catheter, and a distal portion secured to the distal ends of the several struts, whereby rotation of the first catheter, relative the second catheter, twists and closes the distal end of the sheath. A third, outer catheter is also disclosed within which the first and second catheters, and associated struts and sheath, are receivable. Also disclosed is a method for positioning the catheter adjacent an object, or receiving the object within the sheath and enclosing the sheath about the object to facilitate treatment of the object.

Abstract: A water heater which may be either gas or electric and designed for use in either residential or commercial applications includes a generally cylindrical molded plastic inner water tank and a generally cylindrical molded plastic outer shell which is sized somewhat larger than the outside diameter of the tank and is disposed around the tank so as to define an annular clearance space between the shell and the tank. By means of covers and end members the clearance space between the tank and the shell are sealed closed so that a vacuum can be drawn on this closed clearance space and thereby provide thermal insulation for the inner water tank by means of the vacuum. A related construction includes a double-walled outer shell wherein the two walls are spaced apart from one another so as to define a clearance space therebetween. This clearance space is sealed closed and a vacuum drawn in order to provide the requisite insulation for the inner water tank which is disposed on the interior of the shell.