Abstract: A "closed-loop" moisture control system for use in vibratory mass finishing systems. A substantially constant amount of a grinding and/or polishing slurry is maintained in a finishing reservoir of the vibratory mass finishing system by controlling the amount of such fluid flowing from a supply reservoir into the finishing reservoir, and/or the amount of such fluid flowing from the finishing reservoir into a collection reservoir. In operation, a total weight of the supply reservoir and its contents, and of the collection reservoir and its contents is monitored and, in the event there is an increase in the total weight, a control means increases the amount of polishing fluid flowing from the supply reservoir into the finishing reservoir, and/or decreases the amount of polishing fluid flowing from the finishing reservoir into the collection reservoir.

Abstract: The belt grinding assembly according to the present invention includes (1) a frame (2) a belt grinding mechanism comprising a continuous abrasive belt having a backing with front and rear surfaces, and abrasive granules attached along the front surface; a mechanism for driving the abrasive belt in a first direction along a path relative to the frame; (3) a backup having a support surface for the belt along the path; which support surface is straight in the first direction and has a uniform shape corresponding to the shape of the edge surface in a direction at a right angle to the first direction; (4) a wheel having a periphery, a wheel axis at a right angle to the first direction; a mechanism mounting the wheel on the frame for rotation about the wheel axis; drive mechanism for rotating the periphery of the wheel past a loading station relative to the frame, and then past the support surface at a generally uniform rate of speed and in a first rotational direction; and (5) a plurality of pivoting engagement me

Abstract: A method and apparatus for machining of bores in workpieces is described, where a honing tool, covered with an abrasive material coating and radially pressed against the wall of the bore, simultaneously performs a rotational motion and an axial reciprocal motion. In addition to the reciprocal and rotational motions, the honing tool performs a high-frequency, short-stroke self-oscillation, which is excited by ultrasonic oscillation in the range of 16 to 40 kHz.

Abstract: A block having first and second permanent cavities. The first cavity includes a first vertical, continuous V-groove from the rop of the block to a pocket which has a permanent horizontal bottom wall. The second cavity includes a second V-groove that is parallel to the first V-groove, and which is continuous from the top of the block to a second permanent horizontal bottom wall that is at a predetermined height with respect to the bottom wall of the first cavity. Each cavity includes a bar pivotally attached to the block, which includes a flat surface for pressing normally to the bottom of the V-groove, along a vertical line of contact with the vertical cylindrical portion of a tool in the V-groove when the bar is positioned horizontally across the V-groove and is drawn to the block.

Abstract: A method of sharpening cutting blades of the type made from bar stock type material, the method comprising producing relief surfaces on the cutting profile surface. The method comprises forming first and second relief surfaces on the cutting profile surface. The first relief surface extends from a location inward of the cutting edge to the back face and is oriented at a first relief angle with respect to a side surface. The second relief surface extends from the cutting edge to the first relief surface and is oriented at a second relief angle with respect to the side surface with the second relief angle being smaller than the first relief angle.

Abstract: A method of grinding a core blank which yields at least one head core each used for a magnetic head, each head core having an annular magnetic path having a magnetic gap, the core blank having a working surface that is to be opposed to a magnetic recording medium is disclosed. According to the present grinding method, at least one marker is formed by photolithography so that the marker(s) is/are embedded in the core blank. Each marker has two edges which are spaced from each other in a direction of width of the magnetic gap, by a first distance that continuously varies in a direction of depth of the magnetic gap, the two edges of each marker being located on the same side as viewed in the gap-width direction.

Abstract: Splices of endless abrasive belts and cones can be formed without emission of organic volatiles by employing as the splicing adhesive an aqueous adhesive dispersion that is a blend of a polyurethane and a polyisocyanate crosslinking agent.

Abstract: A floating inflatable structure is used to house a vessel for repair while it is afloat. The structure has inflatable walls containing water ballast. The height of the structure above the water can be adjusted by either introducing or expelling water ballast from the foot of the walls. Alternatively, a separate water ballast tube may be provided, the height of which can be adjusted relative to the structure.

Abstract: A cover for a hollow rain gutter, according to the invention, is described as having an upwardly pitched top surface arranged to seat beneath the shingles of a roof at which the gutter has previously been secured, a downwardly pitched front surface extending towards the trough of the gutter, and a single row of interrupted slots running horizontally along the front surface of the cover, with the lower edges of the slots extending below the front lip of the gutter, and with the top-edges of the slots aiding in defining a plurality of rearwardly and downwardly extending flaps for diverting rain received across the top surface into the trough of the gutter. The cover of the invention may be obtained in any length desired, and can be connected to the gutter by readily available "clips", thereby making its installation easy for even the average handyman or homeowner.

Abstract: A multi-level parking lot made from prefabricated reinforced concrete modular elements is disclosed. The modular elements include plural parking compartments with defined parts for passage between the compartments and approach routes for entering the parking lot. The parking compartments include connecting plates and integral units with four columns, each integral unit including a slab integreal with and resting on the four columns. A steel pipe protrudes from an upper surface of the column for interfitting engagement with a corresponding hole in the connecting plate. The individual units bear against themselves in a stable manner by virtue of their weight without the need for any linking connections therebetween.

Abstract: Hemispherical dome comprising a plurality of rigid longitudinally extending and radially oriented cells of like size and shape, and arranged in a plurality of circular rows. Each cell is essentially frustopyramidal in shape, having a polygonal cross-sectional shape and tapering slightly in the longitudinal direction from one end to the other. The longitudinal edges of each cell lie along radii of the hemisphere. Each cell is a hollow structure, having side wall means which completely surround an interior air space and which include spaced apart top and bottom walls. It can be formed of a lightweight material, preferably a plastic and especially polycarbonate. The hemispherical dome of this invention provides a lightweight, strong and energy efficient structure which does not require internal supports.

Abstract: By introducing an expanded structure into a rubber portion during heating under pressure at the time of integrating a mat, and by using as a backing of a carpet a foamed rubber sheet having an expansibility of 1.2 to 3 times and a skin layer having a thickness of 0.1 to 1.0 mm, the shrinkage of the mat by shrinking, washing and drying after heating under pressure can be relaxed, and the waving of the mat can be prevented effectively. At the same time, the mat of the invention has excellent fitness to a floor surface, light-weight, strength and heat resistance.

Abstract: A molding system for use in the replacement of articles, such as doors and windows. More specifically, the molding system is for use in the replacement of windows and door in stucco buildings. A method is disclosed for installing the molding which includes making a uniformed cut about the periphery of the article being replaced, removing the outermost surface of the supporting structure defined between the uniformed cut and the periphery of the article being replaced, replacing the existing article with a replacement article, and installing the molding system around the perimeter of the replacement article. The molding system comprises a first member which is fastenable about the periphery of an article and which includes a tab that is engagable with a second member. The second member has a first return engagable with the tab of the first member and a second return engagable with a groove around the perimeter of the replacement article.

Abstract: A frame system and frame members in which the frame members have a base, a support wall extending from the base adjacent one edge thereof a tongue extending from the support wall parallel to and spaced from the base, a detent or groove between the free end of the tongue and the other edge of the base, a bend or protrusion connected to the base adjacent the one edge, on the other side of said base from said support wall a tubular structure comprising a center channel and a pocket on each side thereof for receiving an angle member. In an assembled frame, the frame members are joined end to end by angle members in the pockets. Hook and loop features fabric secured respectively to the sides of the pockets and display panels permits simple mounting and changing of panels on the assembled frame.

Abstract: A light weight structural composite panel adapted for use in a vertical orientation in an underground worker protection system is disclosed. The panel comprises first and second fiberglass reinforced resin matrix facing layers and a balsa-containing core means, weights less than about 5.5 to about 6 lbs. per square foot, and when supported in a vertical plane adjacent an excavation wall, is able to withstand an extended load in Type C solid (OSHA, CFR 1926) of at least 592 pounds per square foot with a minimum safety factor of 3:1. Methods of preparing the panels and methods of assembling the panels into excavation support systems are also disclosed.

Abstract: A series of roofing shingles (200, 240, 260, 280) are disclosed which have multiple tabs across the exposed width of the shingle. A polymer foam layer is bonded to an asphalt shingle material to form the roofing shingle. The polymer foam is thicker at certain of the tabs than others to provide a pleasing layered appearance to the roof. The tabs can also be varied in width and length relative to adjacent tabs.

Abstract: A panel element for use as a roof tile or other building element, e.g. on a vertical surface, is molded in one piece and includes upper, lower and left and right marginal edge regions. To facilitate securing the panel in place, the upper edge region may include fastening apertures. The lower marginal edge region of each panel is secured to the upper edge region of another panel in a lower row of panels. For this purpose, interlocking formations are provided in the upper and lower marginal edge regions, with the locking formation in the upper marginal edge region being below the nail apertures. This locking formation can serve both to prevent water travelling up to the nail apertures and as a locking formation. Support ribs under the panels can provide both uniform support from an underlying planar surface, and can also form the locking formations. The panel can be molded in any suitable material to simulate a variety of known tiles or other building elements.

Abstract: Two types of corner couplings together with horizontally extending and vertically extending beams form a multi-cornered paneled frame structure. One coupling connects, with suitable connectors, horizontally and inwardly extending panels to the horizontally extending beams and the other coupling connects, with suitable connectors, vertically extending panels to said horizontally extending beams and to the vertically extending beams. Other suitable connectors secure the two types of couplings to each other.

Abstract: A long span truss of substantially conventional steel construction provided with concrete encasement of the top and bottom chords with the concrete encasement being reinforced and the concrete encasement on the bottom chord and optionally on the top cord including post-tensioned steel tendons. The invention further relates to a method of making the truss as described above in which the light structural steel truss is first erected and provided with temporary steel scaffolding and bracing to support formwork. Reinforcing steel and steel tendons are placed in the formwork and concrete is poured to encase the top and bottom chords of the truss. The steel tendons are post-tensioned to provide maximum load support capability.

Abstract: An energy dissipating connector for coupling first and second structural members together has a first attachment member attachable to a first rebar member of the first structural member and a second attachment member attachable to a second rebar member of the second structural member such that the second attachment member is slidably connectable to the first attachment member whereby sliding of the second attachment member relative to the first attachment member permits relative motion of the first and second structural members and dissipates energy tending to cause such motion. The second attachment member is preferably slidably moveable relative to the first attachment member by approximately 1/4 inch in either direction and the second attachment member preferably moves relative to the first attachment member in response to force of at least 90,000 pounds. The first and second attachment members are preferably attachable to the first and second rebar portions via screw threads.

Abstract: A method for erecting absorber towers using trestle means (26) with jack means (32) to assemble a course and then lift it while constructing the next course below it. The first course is lowered on the just assembled course and welded thereto. These steps are repeated to form the outer wall (34) of the absorber tower (10). A clearance (48) is provided between the elevated course and the course to be assembled for installing the internal components of the tower. Advantageously, the method of the present invention allows for the construction of an absorber tower on site in retrofit applications where space may be restricted and access limited.

Abstract: A composite, prestressed structural member, such as a bridge unit and methods of forming such a member. The apparatus includes a plurality of longitudinally extending girders which are transversely spaced and a plurality of adjacent composite units disposed on the girders. Each composite unit has a plurality of beams with a molded deck portion formed thereabove. The beams are positioned transversely with respect to the girders and attached thereto. Additional, longitudinal beams are disposed between the transversely extending beams over the girders. The longitudinal beams are attached to the girders and by connectors to the molded deck. The structure is formed by positioning the girders on a construction support adjacent to a center portion of the girders such that the free ends of the girders cantilever and deflect downwardly. The beams of the composite units are attached to the girders in this construction position. Any gaps between adjacent composite units are filled with a non-shrink, high strength grout.

Abstract: A method of constructing curvilinear structures utilizes an armature mast, an armature boom having a vertically and horizontally pivotable arm terminating in a reinforcing rod (rebar) tying guide, and associated hardware. The tying guide is aligned with a piece of vertical rebar, and a separate piece of horizontal rebar is placed adjacent and generally perpendicular to the vertical rebar for securing thereto. The tying guide is then moved to engage an adjacent piece of vertical rebar, and the horizontal piece is bent inwards for securing thereto. As the armature boom is moved about the mast and progressively raised, further vertical and horizontal pieces of rebar can be brought into juxtaposition and secured, thus generating a non-planar grid of rebar. An impermeable layer is placed over the grid, and a hardening material is applied to form a rigid shell. Further outside and inside base layers may be applied, and further outside and inside surface layers may be applied.

Abstract: Fire-resistant structures are provided having at least a 20 minute ASTM E-152 fire test rating. The structures include a core having a gypsum-containing composition and a density of at least about 60 lbs/ft, a flexural strength of at least 30 lbs (1/2 inch thick material), and a screw-holding capacity of at least about 400 lbs. The gypsum-containing composition further contains a substantially uniform distribution of solids including about 65 wt. % to about 90 wt. % set gypsum dihydrate, about 7 wt. % to about 30 wt. % paper fiber, and about 1.5 wt. % to about 35 wt. % of one or more performance boosters selected from inorganic fiber, clay, vermiculate, and binder polymer.

Abstract: A band application machine for transferring to containers heat-shrinkable bands. The band application machine includes a band feed system for feeding band supply material to a cutting system which cuts a band from the band supply. A transfer system transfers cut bands to containers conveyed past a banding point, and includes a band gripping mechanism and a plunger. Band gripping mechanism includes opposed suction cups that are movably mounted for gripping and positioning a cut band. The suction cups are laterally movable from a position where a closed band is gripped on opposing sides by the suction cups to a position where the band is open and aligned with the stroke of the plunger. The plunger is positioned over the opened band at an angle with respect to the band. The plunger presses and drives the band onto a container as the gripper apparatus releases the open band.

Abstract: The invention relates to a device and method for expanding bags and slipping them on to a filling neck, especially bags with side folds, which are fed individually on to an aligning table, with the bag opening being positioned at the front, there being provided at least first suction means which are supported at the aligning table and which, in the region of the bag opening, are movable against the lower bag wall; at least second suction means which are supported at the aligning table and which are movable against the upper bag wall, the two sets of suction means being removable from one another while being vacuum-loaded; a pair of expanding blades which are movable into the seams of the side folds, which are secured to first pivot elements and are pivotable around a horizontal pivot axis positioned above the aligning table; a pair of bag grips with pairs of claws which are pivotable around rotational axes positioned parallel to the plane of the aligning table and, in consequence, may be opened and closed and

Abstract: A method of producing tubular wrappings for parallelepiped products or similar, whereby the products and respective portions of wrapping material are fed successively on to a respective first and second conveyor and fed continuously along a common route, along which each portion of wrapping material is transferred on to the first conveyor by a pair of supports supporting a respective product and supported on and moving with the first conveyor, each pair of supports being rotated for wrapping a respective portion of wrapping material about the respective product and so forming a respective tubular wrapping, the opposite portions of which are overlapped and welded together by a welding device assigned to each pair of supports.

Abstract: An automated apparatus and method for filling a container with a fluid. This apparatus is particularly well suited for the filling of relatively large containers of the type that utilize removable, threaded plugs for gaining access into the containers. For such containers, the apparatus can perform the tasks usually involved in the typical filling operation (e.g., aligning, opening, fluid dispensing, closing and sealing the container). Such automated tasks are especially relevant when dealing with fluids which are toxic, inclined to foaming or likely to mix readily with the surrounding gaseous environment. The apparatus includes a container transport system to coordinate the movement of a container between and its interaction with the following task oriented assemblies: bung alignment, kicker, bung cap handling, fluid dispensing, and sealing cap installation.

Abstract: A method is provided for the two-stage pressurizing of a product in which a propellant gas may be immediately generated for use as a high-pressure propellant after the sealing of the container. A first reactant and the flowable or sprayable product which is desired to be dispensed is placed into the container until the container is substantially full. The container is then sealed. A second reactant, which may be dissolved in a further amount of product, is introduced in liquid form into the sealed container through a dispensing valve, another valve, or a sealable plug. The first and second reactants react to generate the propellant, which is then contained or dissolved with the product in the container until needed. As product is expelled, the propellant evolves out of the product to exert expulsive pressure. Thus, the invention involves the process of charging during the filling of product and allows the product to be dispensed promptly and continuously thereafter.

Abstract: Disclosed is a method and apparatus for controlling the temperature of a container end portion during manufacture, said container being filled with a product 11, and comprising a substantially tubular body portion 10 of thin-walled plastic or laminated plastic material and a butt-weldable end-piece 13 at each end of the body portion, whereby a first end-piece is fitted to one end of the body portion and the product 11 is introduced into the container via the open end of the body portion, a second end-piece 13 is introduced into the said open body portion end to an intermediate position where it partially projects into the body portion 10, and the plastic material of the body portion end region and the second end-piece is softened through application of heat energy, characterized in that the end-piece 13, by means of relative displacement between it and the body portion 10, is pressed in to the body portion to its terminal position whilst cooling gas is supplied to the transverse wall 15 of the end-piece 13.

Abstract: A manually operated cutting and detachment device for weed and moss removal which has a rod-shaped manual holder and a heat conductor. The heat conductor is engaged on a heat conductor mount. The heat conductor mount is disposed, with a first spring interspersed on a connecting mount for compensating the expansion difference of said heat conductor at varying temperature. The connecting part with the heat conductor mounted and the heat conductor thereon are separably and interchangeably engaged to a first end of said rod-shaped manual holder. The electrical means is engaged on the second end of the rod-shapen manual holder for generating electricity for resistance heating of the heat conductor.

Abstract: An aquatic plant uprooter for ridding a body of water of undesirable plantlife, composed of a hollow handle, a hollow discharge member connected at right angles to the handle, and a plurality of regularly spaced apart nozzles connected with the discharge member. A flexible hose connects a distal end of the handle to a water pump. The handle serves as a fluidic conduit for water from the pump to flow into the discharge member, which in turn, serves as a fluidic conduit for water from the handle to flow into the nozzles. The nozzles are structured, located and mutually spaced so that a jet of water emerges from each, which collectively disturbs the soil of a body of water so as to uproot aquatic plants by undermining their anchorage in the soil. The soil-freed plants may be directly accumulated in a net member attached to the handle and discharge member, or may be collected by use of a separate rake-net system.

Abstract: An auger cutter, windrower and conditioner for standing and downed crops such as hay, or forage harvester crops such as corn, sorghum and cereals including a cutter auger with cutting teeth attached to an auger flight and a conveyor auger to move the cut crop to a central area or to either side of the cutter to be discharged as a windrow or as a mass of material, or to be fed to a second crop processing device such as a forage harvester. An improved relationship of the cutting augers and the conveyor augers and height control mechanism to improve the cutting and transport of the crop.

Abstract: A shredding disk for a lawn mower which attaches to the motor shaft and between the mower blade and the lawn mower deck. The shredding disk includes a disk member and a plurality of knives in a serrated fashion located inboard of the circumferential edge of the disk member. A feed tube is positioned on the top of the lawn mower deck and can be closed with a cap during regular mowing. The shredding disk is for shredding branches or twigs, such as those members which fall off trees.

Abstract: A lawn mower comprising a frame, an engine mounted on the frame, and a cutting deck mounted on the frame. A wheel mounting structure is pivotally connected to the frame and rear wheels are mounted on the wheel mounting structure wherein the pivotal movement of the frame with respect to the wheel mounting structure raises and lowers the frame with respect to the wheels thereby raising and lowering the cutting deck. A lever mechanism is provided for pivoting the frame with respect to the wheel mounting structure to thereby raise and lower the frame with respect to the wheel mounting structure and a rod and plurality of holes are provided for fixing the position of the frame with respect to the wheel mounting structure at any of a plurality of predetermined positions. The lawn mower has hand controls for controlling a wheel driving system with a motor coupled to each wheel and a safety mechanism is provided to prevent extreme turning which may result from the movement of the hand controls to extreme positions.

Abstract: A mulching deck particularly designed to handle tall, thick grasses and weeds (dry or wet), and a kit for converting an existing mowing deck into such a mulching deck. The deck features the combination of a closed discharge chute in a multi-bladed rotary mower having a plurality of stationary cutting blades positioned within the rotary blade housing. Deflectors may be provided in the housing for helping to redirect the clippings back into the path of the rotary and stationary blades for further comminution.

Abstract: An agricultural rake especially designed for gathering wide swaths of agricultural field crops into windrows prior to baling is provided. The rake includes a primary frame, a pair of secondary rake frames pivotally and shiftably mounted to the primary frame, and a plurality or bank of radially-tined wheel rakes supported by the secondary frames. The secondary rake frames are free to pivot in a plane perpendicular to the direction of travel to prevent undo stress on the frames. Both the angle of deployment of the secondary frames as well as the distance between the frames is adjustable to accommodate different swath widths and windrow sizes. A unique rake suspension assembly provides for the easy shifting of the rake bases between the raking and transport positions while providing for desired tensioning of the rakes during raking operations and elevating the rake frames during transport. In an embodiment, castors are included to support the rake suspension assembly.

Abstract: A hand held implement for raking is provided with an apparatus for cleaning of debris which becomes lodged on and among the tines by means of an actuator, requiring a minimum of effort and disruption of the raking rhythm on the part of the operator in order to effect cleaning. The tines are transversely flexible, allowing the movement of a cleaning bar, which also serves as a stress distributor and tine separator, along and about and to the distal ends of the tines for the purpose of removing lodged debris. The cleaning bar is attached to and operated by a hollow actuator, which moves along and about the rake handle, by an intervening spring, which applies downward tension to the tines. The tines, in turn diverging and downward arcing, provide tension to help keep the cleaning apparatus as positioned by the operator anywhere along its travel upon the tines.

Abstract: A cleaning apparatus used in a spinning machine wherein a row of grabs having seats can be engaged over tubes in respective spinning stations to remove the tubes from and insert the tubes into the respective stations has at least one nozzle directable into the seats of the grabs and a system for supplying air under pressure to the nozzle and thereby forming at the nozzle a jet that blows lint and the like from the seat into which the nozzle is directed.

Abstract: Spun yarns are made at high speeds of up to 220 meters per minute, using spinning techniques in which air is used to twist the fibers of a three component blend, one component of which consists of staple fibers made from electrically conductive filaments having a denier no greater than 2.5 times the denier of the filaments of the other components.

Abstract: A chain structure is provided which includes a base plate having a pair of integral cylinders extending from one side. A connecting plate has a pair of elliptically contoured apertures at respective ends adapted to receive the corresponding cylinders. Each of the cylinders has an annular groove formed in a top portion with tapered surfaces. Each of the apertures has a pair of tapered walls at respective sides adapted to matingly engage with the tapered side walls of the connecting plate when the connecting plate is inserted into the base plate and the apertures are aligned in the annular grooves.

Abstract: In the present invention, the DEC output voltage is limited by comparing the DEC output and the Collective input to a predetermined maximum acceleration and generating an error signal when the maximum acceleration is exceeded. The error signal is fed back to the DEC and acts to limit its input. More particularly, the present invention is directed to a method of limiting the output of a DEC by generating a first signal representative of the acceleration demanded by the DEC, generating a second signal representative of the acceleration demanded by the collective, adding the first and second signals to form a third signal representative of the total demanded acceleration, generating a fourth signal representative of the maximum allowable demanded acceleration, subtracting the third signal from the fourth signal to obtain an error signal, and limiting the DEC output signal according to the error signal.

Abstract: Lean flameout upon ignition in a turbine system including a turbine wheel (10) driven by motive gases including gases of combustion from a combustor (20) may be avoided by locating an orifice (130) downstream of the servo/.DELTA.P valve (52) that controls fuel flow to the fuel inlet (22) of the combustor (20).

Abstract: An electronic fuel control for a gas turbine engine monitors the mass density of the fuel. As the mass density of the fuel varies when the fuel temperature changes or when the fuel type changes, the electronic fuel control adjusts an initial mass density to a corrected value based on the most recent measurement of mass fuel flow that was taken when the mass fuel flow measurement was known to be accurate. Accurately controlling mass fuel flow permits gas turbine engine designers to reduce tolerances in moving parts which improves the efficiency of the gas turbine engine.

Abstract: A novel class of energy-generating chemical processes or reactions uses cryogenically Prepared and stored materials exhibiting volcanic ground states having lifetimes exceeding several seconds. Energy generation is provided through activation of cryogenically prepared and stored material characterized by a volcanic ground potential surface in which its lowest rotation-vibration level has a lifetime sufficiently long to permit practical storage and subsequent energy release. Cryogenic preparation and storage provides that the material is kept in these lowest rotation-vibration levels, thereby avoiding thermodynamic population of the higher levels which are short-lived and therefore not suitable for practical use. In one embodiment, the He .sub.2.sup.++ v=0, J=0 level has been found to have a lifetime of 220 minutes making He.sub.2.sup.++ an ideal candidate for a fuel in which laser-induced fragmentation of He.sub.2.sup.++ into He.sup.+ +He.sup.

Abstract: Control of a gas turbine engine, suitable for powering an aircraft, is accomplished by varying outlet nozzle cross section and/or a mixing of bypass air with exhaust gas at an inlet to the nozzle. The engine includes a core engine having a combustion chamber and high and low pressure turbines followed by an exhaust plenum. High and low pressure compressors driven by the turbine assembly direct air into the combustion chamber and into a bypass duct. The bypass duct extends from an outlet of the low pressure compressor. Pressure of fluid (air or exhaust) is measured at an inlet to the high pressure compressor, in the bypass duct, and in the exhaust plenum. Ratios of the pressure of the duct pressure or of the pressure at the inlet of the high-pressure compressor, to the plenum pressure are employed in a feedback loop for control of nozzle size, and also of mixing valve position in an alternate embodiment of the invention.

Abstract: The rotor of a fan disposed in the annular noncombusted air flow duct of a urbojet propulsion engine of the bypass type is carried by a rotary body which includes the rotor assembly of a multi-stage turbine driven by noncombusted air supplied thereto by an axisymmetrical auxiliary duct which diverts noncombusted air from the primary duct of the engine just downstream of the compressor.

Abstract: A fiber/resin composite whose resin phase is formed by at least initial actinic radiation curing of a resin composition comprising an actinic radiation curable first resin component and a second resin component which is non-cured under curing conditions effective for the first resin component. The actinic radiation exposure of the fiber/resin composition effects curing of the first resin component to immobilize the composite and impart structural integrity thereto, whereby the composite may be handled, packaged, or further processed. Filament wound, braided, and pultruded articles are described, together with associated methods for forming such articles by filament winding, braiding and pultrusion. As a specific embodiment, a solid fuel rocket motor is disclosed comprising a solid fuel body in a filament wound fiber-resin composite casing formed by filament winding of the solid fuel body with resin-impregnated filament or rovings thereof.

Abstract: A device for removing for particulates a diesel engine having a filter arranged in the flow of the exhaust gas, a heater for heating the filter, and an air pump or obtaining a flow of air for incineration of the particulates trapped by the filter when it is clogged. The amount of the air for the incineration of the filter is calculated in accordance with the amount of the particulates remaining in the filter at the peripheral zone thereof just after the preceding incineration cycle.

Abstract: An exhaust gas duct for a row of cylinders of an internal combustion engine is so constructed that corrosion, especially fretting corrosion, is minimized by mounting the exhaust gas pipe section in a cooling housing so that contact between the pipe section and the cooling housing is limited to the end portions of the exhaust gas pipe section, thereby leaving an uninterrupted gap between the pipe section and the housing all along the pipe section. The end mountings permit an axial movement, and, if desired, also a radial movement of the pipe section relative to the liquid cooled housing for compensating thermal expansions and contractions. The end mountings are easily accessible for inspection and additionally, permit an easy assembly and disassembly of the components.