Abstract: A combination turbojet-ramjet engine for powering a hypersonic aircraft is disclosed wherein the intake duct for the ramjet portion of the engine is centrally located within the turbojet portion of the engine in order to improve the access from outside the engine to the turbojet engine portion, as well as to maximize the use of common components and to simplify the control systems for changing from turbojet operation to ramjet operation and vice versa. The ramjet intake duct extends generally parallel to the longitudinal axis of the hypersonic aircraft engine and is located radially inwardly of the compressor, the combustion chamber and the turbine wheel of the turbojet engine portion. Flow control devices are located on the turbojet engine air intake, as well as the ramjet intake duct to control the supply of air to the respective engine portions.

Abstract: A thrust reverser for a turbojet engine is disclosed having a movable component, such as a thrust reverser door, operatively associated with an engine housing, and vanes formed on the upstream edge portion of the movable component and extending inwardly from an interior surface. The vanes, which extend in a direction generally parallel to a longitudinal axis of the engine, are located in an array which extends across the upstream edge portion of the movable component from one side to the other. The vanes each may be generally triangular in configuration and have one side attached to the inner surface of the movable component and another side attached to a gas flow deflector extending laterally across the front edge of the movable component.

Abstract: An exhaust gas burner reactor which comprises a burner apparatus having a combustor tube which extends axially in a spaced relationship to an exhaust gas conduit. The combustor tube has a first, base end having fuel and air inlets and a mixing chamber therein, and a second combustor end having a combustor chamber and outlets for ejecting burning fuel and air into the exhaust gas conduit. The combustor assembly is oriented so as to locate the burner outlets upstream of the first end so that heated exhaust gas/burner output mixture passes through an exhaust reactor defined between the combustor tube and the exhaust gas conduit. The reactor aids in the combustion of unreacted fuel components in the exhaust gas.

Abstract: The master cylinder comprises a body 10 formed with a bore 13, a piston 19 slidable in the bore to discharge hydraulic working fluid from the bore and an annular reservoir 17 for communication with the bore 13 and which is concentric with the bore. The reservoir contains a flexible diaphragm 30 which separate fluid in the reservoir 17 from ambient air. The use of the concentric reservoir 17 and diaphragm 30 makes the master cylinder particulary compact and suitable for use in a pre-filled clutch release system of a vehicle.

Abstract: An internal combustion engine according to the present invention is comprised of a conduit means that directs the flow of exhaust from an internal combustion engine to a relatively low speed turbine connected to a generator. The conduit means also acts as a mixing means for mixing appreciable quantities of outside air with the exhaust for recombustion prior to entry into the turbine. The turbine is designed to utilize the energy of the recombusted gases through impact and redirection of the gases upon the turbine blades. This invention comprises a dual function conduit means connecting internal combustion engine exhaust to a relatively low speed turbine wherein the conduit means also induces an appreciable flow of outside air to mix with the exhaust gases to effectively lower the temperature of the gases imposed on the turbine but without lowering the total energy of the gases.

Abstract: This disclosure describes a single shell, double dome combustor design configuration with the intermediate dividing wall between the two annuli removed, thereby reducing weight and cost, and improving durability. An annular daisy type mixer is positioned between the domes to improve the mixing of air and combustor gases prior to the exiting of the gases from the combustor to the turbine vanes. The daisy mixer positioned downstream of the domes to provides effective, low pressure loss mixing at a a controlled axial rate, by creating effective cross-flow barriers to avoid uncontrolled fuel/air ratio transfer between the inner and outer annuli, and thereby allows a concentric and controlled axial air admission in conjunction with the individual swirlers.

Abstract: A system for supplying fuel to a plurality of fuel injectors of a gas turbine engine is disclosed having first and second fuel distributors and a fuel transfer device which enables fuel to flow from the fuel source to the first and second fuel distributors as a function of the fuel flow rate. The fuel transfer device enables fuel to flow through the first fuel distributor under low fuel flow conditions. The first fuel distributor sequentially supplies fuel to each of a plurality of groups of fuel injectors when the fuel flow rate is below a predetermined threshold value. When the fuel flow exceeds a high threshold value, the fuel transfer device enables fuel to flow through the second fuel distributor which supplies fuel to all of the fuel injectors of the engine.

Abstract: A Stirling cycle type cold air generating device comprising a Stirling module having a module cylinder and a module piston disposed in the module cylinder to be vertically reciprocated, a magnetic pole piston extending downwardly from a lower end of the module piston, the magnetic pole piston being moved integrally with the module piston, a pump cylinder disposed beneath a module cylinder of a module and isolated therefrom, and a pump piston disposed in the pump cylinder to be vertically reciprocated, the pump piston defining an upper pumping chamber for pumping the heat transfer medium and a lower pumping chamber for pumping the brine in the interior of the pump cylinder. The magnetic pole piston and the pump piston are magnetically connected by means of a magnetic coupling disposed around both the module cylinder and the pump cylinder to move vertically therealong.

Abstract: A cabinet for a reach-in cooler includes at least one door and a window located within the at least one door. The window is sized to be no larger than one third the surface area of the door.

Abstract: A method of monitoring a refrigeration unit including detecting premature return of air discharged into a conditioned space, and distinguishing this "short cycling" problem from a refrigeration capacity problem. The method includes determining the rates of change of the temperatures DA and RA of the discharge air and return air, respectively, during temperature pull down of the conditioned space, and comparing the rates of change with predetermined constants selected to detect a short cycling of the discharge air. When the rates of change do not fit a normal temperature pull down, the differential .DELTA.D between the temperatures DA and RA of the discharge air and return air is determined and compared with a third constant. Predetermined results of the comparisons of the rates of changes of DA and RA, and the temperature difference .DELTA.

Abstract: An air conditioning system includes: a compressor, an outside air heat exchanger, an outside air heat exchanger fan, an expansion valve, an interior heat exchanger, an interior heat exchanger fan, and a four-way switching valve further comprises an outside air induction/venting device provided outside the outside air heat exchanger. A device for switching or opening/closing the air intakes and/or outlet of the outside air heat exchanger are provided in the outside air induction/venting device and are operated to enable the efficient use of waste heat from the drive shaft motor or inside the passenger compartment, and to provide a defrost cycle in the heat pump heating mode.

Abstract: A microprocessor-based air conditioning/refrigeration control system adapted for use with a variable speed compressor measures acceleration of the compressor and the temperature or pressure of the refrigerant exiting therefrom, determines the rate of change of the temperature or pressure of the refrigerant, and decreases acceleration of the compressor if the rate of change of the temperature or pressure of the working fluid indicates surging of the compressor. Superheat of the refrigerant is maintained at a first predefined level while the compressor is operating at constant speed and is increased to a second, higher predefined level while the compressor is accelerating.

Abstract: A drain pan with an opening or openings through which air flows to a coil and a coil which, in one embodiment, has a cover plate so air flowing through a drain pan flows between vanes of a coil rather than out from an opening at an end of the coil; such a pan in combination with such a coil; and a system with such a coil-pan combination which uses a single pan for multiple orientations of the coil-pan combination in both horizontal flow, up-flow, and down-flow systems.

Abstract: The present invention is a liquid beverage container which keeps the beverages chilled for an extended period of time. The beverage container has two chambers: there is a chamber for the liquid beverage; and there is an ice chamber, sealed with a cap and separated from the liquid beverage chamber by a thin polymeric film pouch, which can be filled with ice to retain the cool liquid beverage.

Abstract: Triple-effect absorption heat exchange apparatus for transferring heat from a heat load to a heat sink. The apparatus comprises first and second interconnected refrigerant loops. The first loop comprises a first generator, a first condenser, a first evaporator, and a first absorber operatively linked together. The second loop comprises a second generator, a second condenser, a second evaporator, and a second absorber operatively linked together. The first absorber and the first condenser are in direct heat exchange relation with the second generator. This direct heat exchange relation may be established by providing a two-stage generator in which the condenser and absorber of a first loop are in the same vessel as the generator of a second loop. The condenser and absorber of the first loop provide the heat necessary to operate the second-loop generator.

Abstract: In a flat knitting machine equipped with a manually movable handlebar (11) which is oriented parallel to a needle bed, the eccentrically mounted handlebar (11) is connected to a pivoting lever (15) which is the carrier of an armature (19) for a stationarily arranged electromagnet which can be excited via a control device and which, in the excited state, keeps the handlebar in an end position. The arrangement is such that, when the handlebar (11) is struck from above, the magnetic coupling can be released and it is also thereby possible to switch off the machine drive by hand in the quickest way possible.

Abstract: In the fabric structure (10.1) which can be produced in one piece on a two-bed flat-bar knitting machine, a first fabric web (11.1) and a second fabric web (12.1) are connected to one another by means of at least one third fabric web (13.1), a knitted connection being made at the coupling places (15) of the third fabric web (13.1) with the other two fabric webs (11.1, 12.1) respectively.

Abstract: A stitch control mechanism for a flat knitting machine, for controlling loop size in knitting a knit fabric on a flat knitting machine. A spiral cam plate is attached to one surface of a stitch cam control cam, the spiral cam plate is held between a pair of cam rollers, and the pair of cam rollers are supported on a guide plate combined with a stitch cam and having a portion slidably fitted in a guide slot formed in a base plate.

Abstract: A single-cylinder circular knitting machine with anti-twist device includes a needle cylinder in which there is a cavity which is open upward and can be connected, through a perforated region which extends around the needle cylinder axis, to a suction device so as to retain the product during its forming against the walls of the cavity. An inner tubular body is arranged inside the cavity and can be connected to a suction device for drawing the finished product through the inner tubular body. The inner tubular body is controllably movable along an axial direction from a first position, in which its upper end is proximate to the upper end of the needle cylinder, to a second position, in which its upper end is proximate to the bottom of the cavity.

Abstract: A warp knitted fabric has threads of a ground thread system forming a fabric ground. A pattern thread system also forms different patterned areas both in the weft direction as well as in the warp direction. In a basis area there is provided either cloth lapping (1-0/2-3-1 or 0-1 /3-2-1). In the patterned area, a sequence is built by different lappings selected from a group consisting of pillar, tricot, cloth, satin and velvet stitches, in which the average length of the underlaps in predetermined pattern repeats is substantially similar to the underlap length of the cloth lapping. This gives rise to numerous new patterning possibilities, in particular for a Jersey fabric. In addition to a described process, a warp knitting machine is provided for making such warp knitted goods.

Abstract: The present invention provides a method and apparatus for monitoring the application of dye to a traveling web of textile material. The apparatus includes a color characteristic detecting assembly which is movable between an initial detecting position in which it detects a color characteristic of the textile material web shortly after the web has emerged from a dye liquor bath and a post-drying detecting position in which it detects a color characteristic of the textile material web after the web has been handled in a drying device. The post-drying detection of the textile material web enables the apparatus to detect an out-of-limits color characteristic situation which may not appear or be detectable until after the web has been subjected to the drying process. The color characteristic detecting assembly is connected to a control unit which controls the nip pressure of a pair of nip rollers which remove excess moisture from the textile material web.

Abstract: A tamper-resistant security lock assembly for use on lockrods of cargo container doors to prevent unauthorized opening of the doors. The lock assembly includes a pair of adjustably telescopically interengaged hasps with hook configurations on opposite ends adapted to connect with the lockrods in spanning relationship to a door opening and prevent opening of the door. A plurality of openings are formed through the hasps in positions to be in registry with one another when the hasps are appropriately adjusted relative to one another, for receiving a staple and padlock to lock the hasps against relative movement. According to one feature of the invention, the openings in one hasp are spaced differently than the openings in the other hasp, whereby smaller increments of adjustment can be obtained than if the openings were all spaced the same.

Abstract: An antitheft device for attachment to a steering wheel of an automobile comprising an elongated body member having two parallel passageways extending in a longitudinal direction. A first hook is secured to the body member for engagement with a portion of the steering wheel. The first hook engages the wheel from the inside of the rim, with the body member extending outward beyond the periphery of the steering wheel, an elongated rod member, adapted to move in telescopic fashion in one of two passageways formed in the body member, and extending longitudinally therein. A second hook, secured to the rod member, engages the inside portion of the steering wheel at a point diametrically opposed to that of the first hook. A second elongated rod member is adapted to extend in telescopic fashion in a direction opposite to that of the other rod member.

Abstract: A locking device includes a threaded stud with a flat face cut through the threaded surface parallel to the axial direction of the stud, and a knob which locks over a forward section of the stud and includes a casing having an inner surface which defines a hole extending axially through the casing. The inner surface of the casing has a flat surface extending axially which receives the corresponding flat face on the threaded stud to prevent rotation of the casing with respect to the stud. The knob also includes a tumbler housing which is mounted in an axially-fixed position within the casing to rotate freely when a key is inserted into the tumbler housing, and to remain locked in a fixed position when the key is withdrawn. Fitted into the rearward end of the tumbler housing is a sleeve having a threaded axial hole which engages the threaded stud when the tumbler housing is turned by a key to thereby pull the forward section of the stud into the casing hole.

Abstract: The invention relates to a spacer for a rotary peening apparatus having a hub and a plurality of peening flaps that are spaced about and retained by the generally cylindrical peripheral surface of the hub. Each peening flap includes several peening rivets attached to a distal end of the peening flap. The spacer of the present invention positions the peening flaps at at least two locations inward of one of the hub ends of the hub, which enables the rotary peening apparatus to impart a uniform surface finish to a surface.

Abstract: Tube bending apparatus comprising a lower support carrying a mandrel having a bending groove providing a bend axis, and an upper support mounted on the lower support for rotation about the bend axis and carrying a forming member for urging a tube between the mandrel and forming member into the bending groove on rotation of the upper support relative to the lower support. The upper support is adapted to be rotated relative to the lower support through a drive shaft arrangement extending downwardly from the lower support and coupled with a drive unit having an output coupling coaxial with the drive shaft and transverse to the axis of the drive motor of the drive unit. A stand supports the bending apparatus and drive unit relative to an underlying support surface during operation of the bending apparatus.

Abstract: Method and apparatus for bending metal tubes such as for furnace heat exchangers. After the bend die is rotated 180.degree. to make a bend, an upper section of the bend die is split from a lower section, and the upper section is then rotated approximately 90.degree.. In such manner, a portion of the upper section is displaced laterally to vacate a region directly above the lower section. Therefore, in moving the tube forwardly to a new location for a subsequent bend operation, a portion of a previous bend passes through the vacated region thereby enabling sequential bend angles that are less restricted than without rotating the upper section of the split die.

Abstract: Method to obtain simultaneously in the cold state a plurality of sections and/or bars (14), starting with a hot-rolled single multiple-section element (10) which is then cooled (12), the sections and/or bars (14) being deemed to be small sections and/or bars (14) in relation to the typical dimensional category of the specific rolling mill (11), the single multiple-section element (10) comprising a plurality of sections and/or bars (14) which have a symmetrical, asymmetric or special cross-section, a web (23) possibly being included between one section and/or bar (14) and another, the hot-rolled single multiple-section element (10) being cooled (12) in line with the rolling mill (11) and then undergoing, without a break of continuity, an operation in the cold state of simultaneous lengthwise splitting (13) to separate the individual small sections and/or bars (14). The single multiple-section element and the resulting individual sections are also protected.

Abstract: A method for cutting and separating from a piece of sheet metal a product, comprising a first step for contouring the product while leaving a small joint such as a connecting web or micro-joint which connects the product to the sheet metal, a second step for forming a protrusion on or adjacent to the small joint by lancing, embossing, or semi-shearing, and a third step for pressing the protrusion in order to shear the small joint.

Abstract: A hydraulic wire joining device for connecting at least two wires. The device includes a hydraulic cylinder for clamping a wedge or spacer over at least two wires, and a work fixture for transmitting an cylinder force to the wedge. The cylinder is a two-stage type of cylinder, which has first and second coaxial cylinders and respective first and second coaxial pistons respectively forming the first and second chambers and third and fourth chambers. The first piston has passage means which has a pressure valve and which connects the first and third chambers upon opening of the pressure valve only at a second stage higher fluid pressure level, whereby a two-stage two-level force can be applied to the wedge for initial crimping and final crimping of the wedge.

Abstract: End tooling for forming easy open can ends has cooperatively-engageable upper and lower tooling defining a plurality of stations. Each station has appropriate punches and dies for progressively converting shells indexed by conveyor into easy open can ends. The tooling is adapted to convert ends of multiple diameters. The punch caps and die caps at each station have cylindrical bodies sized to engage and align a turned edge of a shell. The caps also have one or more arcuate grooves in the end face thereof for receiving the turned edge of ends having a diameter smaller than that of the cap.

Abstract: The invention relates to a calibration apparatus for control of propellant pumps, especially in the traffic sector, which apparatus is placed on a vehicle, especially a trailer. The apparatus (1) has at least one standard (10) for measuring a determined amount of propellant, and the standard is placed in a cardan suspension (49-52) which is elastically yielding (48) and may be locked during operation and during transport by means of supporting rods (53-59). A standard (10) is divided into a lower measuring compartment (11) and an upper foam top (14) which is connected tot he measuring compartment (11) through a neck (12) with a measuring glass (13) and reading lines (22). The foam top (14) is ventilated (35-37) to reception tank (5) placed at the bottom of the apparatus (1), and the standard (10) may be connected via a remote controlled discharge valve (20) to the reception tank (5) from which propellant may be pumped up into a buffer tank (64) at the top of the apparatus (1).

Abstract: A multiplexed single channel knock sensor signal conditioner system for internal combustion engines includes a plurality of sensors for sensing the vibrations associated with knocking in an internal combustion engine; a single signal conditioning channel for providing a signal level representative of the magnitude of the knock; and means for selectively connecting the sensors to the signal conditioning channel. The signal conditioning channel includes a band pass filter, the frequency characteristics of which are adjusted according to the sensor connected to the signal conditioning channel.

Abstract: A floatable liquid hydrocarbon skimmer system for monitoring possible leaks in hazardous liquid tanks incorporates a vertically disposed tubular housing having an upper end with passages to admit liquid and provides a lower collection chamber for recovered hydrocarbon liquid. The housing has a hydrocarbon liquid-water separator associated with the chamber which has a capillarial filter which will pass only the hydrocarbon liquid through to the collection housing, while being impervious to the passage of water. A wick is in contact with the filter to draw the hydrocarbon liquid to the filter, and a valved outlet passage associated with the collection chamber permits emptying of the collected hydrocarbon liquid back to the tank.

Abstract: In an indentation hardness tester a specimen placed on a specimen table is brought to a position just under an indenter mounted on one free end of a balance having its fulcrum received by a fulcrum bearing member, the balance is turned about the fulcrum by a test load to make an indentation in the specimen by the indenter and then the size of the indentation is measured through a microscope including an objective lens. The fulcrum bearing member for receiving the fulcrum of the balance is vertically movably mounted on a stationary part so that the indenter mounted on the balance is brought up from or down to a position right above the specimen table in close proximity thereto, and the microscope or at least its objective lens is pivotally mounted on the stationary part so that the objective lens turns to or turns away from a position right above the specimen table.

Abstract: There is disclosed a self-diagnosis apparatus in which when detecting a supply abnormally (i.e., failure to lead fuel evaporation gas into an intake passage), the abnormality can be accurately detected, taking into consideration variations in the fuel gas density (variations in the ambient temperature, variations in the volatility of the fuel, and etc.) due to the residual air in a fuel tank. In the apparatus, the amount of flow of the gas from the fuel tank to a canister can be detected, and a control circuit controls a purge valve to close a fuel gas discharge passage, and in this condition the control circuit detects the amount of flow of the gas from the fuel tank to the canister. When this flow amount exceeds a set value, the control circuit controls the purge valve to close and open the discharge passage, and judges in accordance with a change in an air-fuel ratio detected at this time by an O.sub.2 sensor whether or not any abnormality exists.

Abstract: A first fluid having a dyed styrene monomer is injected into a porous reservoir rock to effect saturation. A second fluid, miscible with the first fluid and having a dyed styrene monomer differing in color from the first fluid, is injected into the porous rock to displace the first fluid. Effluent flow from the porous rock is monitored with UV-visible light spectroscopy for use in determining oil displacement characteristics of the porous rock. Subsequent rapid polymerization of the styrene monomer within the porous rock allows identification and characterization of the controlling factors and attributes of the pore network responsible for entrapment of the residual phase. This allows assessment of larger intervals of the reservoir rock.

Abstract: A rain gauge for collecting and measuring precipitation and capable of measuring the amount of collected precipitation that has evaporated. The rain gauge is also capable of measuring precipitation during an interim period of time without discharging the precipitation already collected. The rain gauge comprises a collection vessel, an evaporation vessel, a collection vessel support, an evaporation vessel support and a support post. Both a non-freezing liquid and a non-evaporating liquid are placed in each of the vessels to help prevent the water contained therein from freezing and evaporating, respectively. A movable scale and marking clips are attached to the collection vessel to enable the measurement of precipitation during an interim period of time. A removable screen can be attached to both the collection vessel and the evaporation vessel and a heater can be attached to the collection vessel to melt frozen precipitation.

Abstract: Apparatus and method for metering the flow rate of a fluid through a conduit in which a low inertia transducer is placed between the inlet and outlet, the transducer having a substantially cylindrical housing and a rotatable element concentric to the housing which together define an arcuate pathway for the flow of the fluid. A pressure sensor generates a pressure error signal corresponding to a change in pressure between the inlet and outlet and translates the same into a detectable signal which is used to change the speed of the rotatable element to reduce the differential pressure between the inlet and outlet.

Abstract: Process and device for preparing for analysis a gas mixture consisting of at least two components. The gas mixture is passed through at least two adsorption beds (3', 4'). At least one adsorption bed loaded with at least one constituent is fitted in a desorption device located upstream of the inlet system of an analyzer unit in which the constituent(s) are desorbed by lowering the pressure and/or raising the temperature.

Abstract: A device for measuring the level of fuel in a motor vehicle tank, the device being of the type comprising: a float suitable for following the level of the fuel; a lever hinged to a support and carrying the float; and an electrical transducer controlled by the lever so that the transducer supplies a signal representative of the level of fuel in the tank; wherein: the electrical transducer is placed in a fixed housing linked to a wall of the tank; the lever support is urged permanently against the bottom wall of the tank to follow any displacement thereof; and rotary link means are provided to provide a rotary connection between the float-carrying lever and a control shaft of the electrical transducer.

Abstract: A hydrometer for determining coolant fluid antifreeze concentration includes a housing having a pair of spaced openings for inflow and outflow of coolant fluid into and from the housing, a transparent view dome mounted in flow communication with the housing, a pair of identical sets of float balls of different specific gravities, a pair of longitudinal channels defined along opposite portions of the view dome in flow communication with the interior thereof and containing the sets of float balls for longitudinal movement relative to the view dome and for visual observation from the exterior of the view dome, and a dam defined in the housing between and spaced from the flow openings thereof and capable of obstructing the path of coolant fluid flow directly between the openings of the housing so as to cause deflection of coolant fluid flow into the transparent view dome and the channels therein.

Abstract: A microaccelerometer is provided which has a silicon substrate bonded to a silicon capping plate and silicon back plate, wherein the bonds between the three silicon wafers are characterized by a relatively low residual stress level over a wide temperature range. The bonds are formed by means of an appropriate adhesive at a relatively low temperature without degradation to the microaccelerometer. The bonds between the silicon wafers also provide stress relief during use and packaging of the microaccelerometer. With this invention, the damping distance for the proof mass of the microaccelerometer is accurately controllable and stop means are provided for preventing excessive deflection of the proof mass in a direction perpendicular to the plane of the microaccelerometer.

Abstract: System and method for measuring complex shear or Young's modulus of a polymeric material are described wherein first and second beams of preselected lengths and different thicknesses are disposed in parallel spaced relationship firmly held at first ends thereof and first and second spaced gripping members are attached along the beams, a specimen of polymeric material is disposed between confronting surfaces of the gripping members, a time varying force is applied to one beam, the time varying displacements of the beams are measured, and the modulus of the polymeric material is calculated from the measurements.

Abstract: A silicon chip is micromachined so that a plurality of tines extend radially and coplanarly from an outer peripheral surface of a circular base. First and second mounting members extend from the base for mounting the base to a support. The first mounting member is disposed generally perpendicularly to the second mounting member. A pulse generator applies electrostatic or electromagnetic pulses to successive free ends of the plurality of tines so that each tine momentarily vibrates in the plane in rotational sequence along the circumference of the base. The successive vibrations establish a net angular momentum approximating a spinning wheel so that rotation of the sensor about the axis of one of the first or second mounting members causes the other mounting member to experience a deformation due to coriolus force.

Abstract: A pressure/control gage (12) includes a housing (4) defining an elongate, generally funnel shaped fluid chamber (6) having an open end (8) at the base of the fluid chamber. The open end is sealed by a diaphragm (10). The sealed fluid chamber includes a liquid (26), such as mercury, and a gas (28) defining an interface (30) between the two. The liquid is positioned against the inner surface (20) of the diaphragm. The outer surface (22) of the diaphragm is coupled to a source of pressure (18). The location of the interface changes according to the pressure applied to the outer surface of the diaphragm. Preferably the housing is clear, so the interface can be visually observed, with visual markings (32, 34) indicating the pressure. Also disclosed is a novel surge control valve (40) in which a resilient material (42) is positioned transversely across the fluid passageway (24) connecting the pressure source and the diaphragm.

Abstract: An integral pressure sensor for a pressurized vessel, including a housing, a core element, a seal and a spring. This combination is disposed on the interior of the pressurized vessel. The core element is preferably a magnetic element or a steel ball which moves in the housing under the effect of the vessel pressure, and the chamber or housing pressure. The spring and seal combination together with the core element, function to trap a specified volume of the pressurized medium in the chamber when the vessel is initially pressurized. When the pressurized vessel leaks, the trapped pressure within the chamber exceeds the vessel pressure thereby causing the core element to move. The position or presence of the core element is detected using a detecting device such as a Hall-effect device or another magnetic device.

Abstract: The sensor which is adapted to e inserted into a bore includes a cylinder-shaped body made of an elastomeric material and four resistive wire strains are uniformly distributed around its circumference. This body of an elastic material can be pressed together by means of tensioning members. This causes a deformation of the body in radial direction, such that the resistive wire strains are pressed against the wall of the bore and contact same in a force-locked manner. At the same time, the sensor is held arrested in the bore. Accordingly, an elongation of the structural member is directly transmitted onto the resistive wire strains, such that errors in the signal transmission are avoided.

Abstract: A test coupon for metal matrix composites is provided with means for structurally isolating the reinforcing fibers in the gage section from the reinforcing fibers in the clamped end regions of the coupon, when the latter is subjected to creep testing, so that the results of creep testing can be more accurately indicative of the creep properties associated with the fiber-reinforced metal matrix composite material in the coupon gage section. More particularly, the test coupon of the invention is provided with a plurality of slots or cut-out regions disposed in a section located between the clamped end regions and the centrally located gage section. The plurality of slots, which can be provided in longitudinally and/or laterally staggered arrays, effectively causes structural isolation of the reinforcing fibers in the gage section from the clamped reinforcing fibers located in the end regions of the coupon.

Abstract: A low-noise, paper pick or other single cycle mechanism is obtained by employing a rotary solenoid (15) which has a force to a detent position which may be overcome by force from a drive roller (1). In the detent position the drive roller faces a blank sector (5) of a gear (3) which is integral with a shaft (7), which is the shaft to be turned. An electrical control signal to the solenoid rotates gear (3) through gear (13), which is directly driven by the solenoid, and which turns gear (11) on the shaft. The drive gear overcomes the force of the solenoid until it is disengaged after one cycle, at which time the detent force of the solenoid holds the mechanism in its detent position.