Abstract: A method for assembling a gas turbine engine that includes providing a low-pressure turbine inner rotor configured to rotate in a first direction, providing a low-pressure turbine outer rotor configured to rotate in a second direction that is opposite the first rotational direction, and coupling at least one foil bearing to at least one of the inner and outer rotors to facilitate improving clearance control between a first rotating component and at least one of a second rotating component and a non-rotating component.

Abstract: A method for assembling a gas turbine engine that includes providing a low-pressure turbine inner rotor that includes a first plurality of turbine blade rows configured to rotate in a first direction, providing a low-pressure turbine outer rotor that includes a second plurality of turbine blade rows configured to rotate in a second direction that is opposite the first direction, coupling a turbine mid-frame assembly including a plurality of spokes within the engine such that the spokes are spaced axially forward of the inner rotor, coupling a bearing between the turbine mid-frame assembly and the inner rotor such that the inner rotor is rotatably coupled to the turbine mid-frame, and adjusting the plurality of spokes to align the bearing in a radial direction.

Abstract: A rotor blade is provided that includes a root, a hollow airfoil, and a conduit disposed within the root. The hollow airfoil has a cavity defined by a suction side wall, a pressure side wall, a leading edge, a trailing edge, a base, and a tip. An internal passage configuration is disposed within the cavity. The configuration includes a first radial passage, a second radial passage, a rib disposed between and separating the first radial passage and second radial passage, a plurality of crossover apertures disposed within the rib, and a plurality of trip strips disposed within the second radial passage. The trip strips are attached to an interior surface of one or both of the pressure side wall and the suction side wall. The trip strips are disposed within the first radial passage at an angle ? that is skewed relative to a cooling airflow direction within the first radial passage, and positioned such that each of the plurality of trip strips converges toward the rib.

Abstract: The invention relates to a device for generating an air current, in particular for cooling or heating electric components or sub-assemblies. The aim of the invention is to develop a device of this type in order to incorporate an additional air-current monitor in a simple and cost-effective manner, thus ensuring the reliable and accurate monitoring of the ventilation process. The achieve this, the device is provided with an integrated air-current monitor on a housing part, the latter surrounding and/or being allocated to the fan. Said monitor is positioned in such a way that it is situated in the air current.

Abstract: A multiblade fan includes a case having an air intake port and an air exhaust port, an impeller disposed in said case and having a plurality of blades rotatable about the center of said air intake port, and a noise silencer fin extending substantially parallel to the opening plane of said air intake port, the noise silencer fin being disposed near the tongue of said case. The noise silencer fin suppresses excessive pressure variations and flow speed fluctuations in the vicinity of the air intake port, thereby suppressing the generation of noise.

Abstract: A radial out-flowing rotary ram-in compressor for use in gas turbine engines and the like, having a plurality of vanes attached to discs, with the opposing parts of each two adjacent vanes defining a feeding channel in-between. In operation, working gases are rammed through the feeding channels in a generally radially outward direction, followed by positive displacement of the rammed-in gases to a receiver wherein pressurized gases collect. The pressurized gases are actively swept from the receiver by either a successive rotary ram-in compressor or a successive rotary ram compressor.

Abstract: The mounting of low expansion full ring shrouds in a turbine engine requires radial compliance to limit the stresses experienced by the shroud due to thermal growth differences between the shroud and its support. A method provides radial compliance with no looseness in a mounting system. The mounting system also allows for axial motion of the shroud, should such motion be needed or desired. The lack of looseness in the mounting system results in an ability to achieve smaller tip clearances and thus better engine performance.

Abstract: A stator blade segment for a compressor includes an inner ring segment and an outer ring segment and a plurality of stator blades extending radially between the inner and outer ring segments, the stator blade secured to the outer ring at a shank portion of the blade and loosely held in a slot in the inner ring segment at a tip portion of the blade, the slot formed to substantially match a cross-sectional profile of the tip portion of the blade but sized to create a clearance between the tip portion and the slot.

Abstract: A turbine airfoil includes opposite pressure and suction sides extending in span from a flowpath surface. The flowpath surface has chordally opposite forward and aft edges and laterally opposite first and second endfaces corresponding with the airfoil pressure and suction sides. The flowpath surface joins the first endface at the forward edge in a forward bullnose and joins the second endface at the aft edge in an aft bullnose, with the bullnoses varying in radius from the opposite edges.

Abstract: A new high-strength titanium-based alloy bucket specifically suited for use as the last stage buckets in steam turbine engines having vane lengths of about 40 inches or greater and the method for forming such bucket. Exemplary buckets according to the invention are formed from a titanium-based alloy containing up to about 6.25% aluminum; (b) about to 3.5% vanadium; (c) about 2.25% tin, (d) about 2.25% zirconium, (e) about 1.75% molybdenum, (f) about 2.25% chromium, (g) about 0.7% silicon; and (h) about 2.3% iron, with the balance being titanium. After forming, the bucket can be heat treated to provide stress relief and then machined in a conventional manner.

Abstract: An exit guide vane array for a turbine engine includes a set of guide vanes 28 having a solidity and defining fluid flow passages 74 with a chordwisely converging forward portion 80. The high solidity and convergent passage portion 80 resist fluid separation. The vanes may also cooperate with each other to restrict an observer's line of sight to planes upstream of the vane array.

Abstract: A motor-operated fan includes a housing, a motor secured in the housing, and an impeller rotatably mounted on the housing and rotated by the motor. Thus, the impeller has a plurality of blades and a plurality of auxiliary blades to produce a larger air flow when the impeller is rotated so as to push a ball located above the air cushion table, so that the ball is moved above the air cushion table in an irregular manner at a higher speed, thereby providing an amusement playing effect for players.

Abstract: A turbine blade for a turbine engine having a leading edge cooling system formed from a suction side cooling channel and a pressure side cooling channel. Cooling fluids flow into the leading edge cooling channels through impingement orifices that meter cooling fluid flow. The cooling fluids may form vortices in the cooling channels before being released from the turbine blade through gill holes. The cooling fluids then form a boundary layer of film cooling fluids on an outer surface of the turbine blade.

Abstract: A Francis turbine with an improved shape of blades, which can reduce a circumferential velocity component generated in the flow downstream of the blades in a condition of a partial load operation, or reduce the secondary flow around the blades, is provided. A Francis turbine comprises a crown, a plurality of blades, and a band. The crown can rotate around a rotating axis. The blades are circumferentially arranged on the crown, each of which including an inner end as a trailing edge. The band is coaxially coupled with the crown by the blades. A distance Rc can be defined as a distance between the rotation axis and an end by the crown side of the trailing edge. A distance Rb can be defined as a distance between the rotation axis and an end by the band side of the trailing edge. The distance Rc and the distance Rb satisfy 0.2 ? R c R b ? 0.4 .

Abstract: A Francis runner and a hydraulic turbine equipped with such a runner, wherein the runner includes a ceiling, a belt, and blades which extend between the ceiling and the belt and which define liquid flow channels therebetween. A ratio (e/L) of a maximum thickness Ce) of each blade to an average developed length (L) of an average fibre of each blade is between 0.1 and 0.2. At a leading edge of each blade, the average fibre is oriented, over essentially an entire height of the leading edge, along a straight line (?23), which forms an angle (?) greater than 90° relative to a line (U) defining a direction of rotation of the leading edge of the runner.

Abstract: To economically perform preparatory chromatography, a plurality of pumps each having a corresponding one of a plurality of pistons and a corresponding one of a plurality of cylinders are driven by one motor to draw and pump solvent simultaneously into corresponding columns. To form a gradient, the pumps are connected to two-way valves that are connected alternately to a first solvent and a second solvent, whereby the time said valve is in a first position controls the amount of solvent drawn from the first reservoir into said pumps and the amount of time in said second position controls the amount of said second solvent drawn from the second reservoir into said pumps and the solvent is mixed in the pumping systems. The detectors are photodiodes mounted to light guides in the flow cells that generate signals related to light absorbance and communicate with a controller, whereby the controller receives signals indicating solute between the light guides and causes collection of solute.

Abstract: The invention relates to a method for controlling several pumps in a pump sump, with which each pump comprises a switch which switches on the pump and each pump after its running is first blocked and depending on the running of the further pumps in the pump sump is released again. The invention further relates to a pump for carrying out this method.

Abstract: A method of installing a removable inlet port filter plate having a replaceable filter between a compressor inlet port and a suction hose assembly is taught. The inlet port filter plate includes a main body and mounting surfaces for attachment between the compressor and the suction hose assembly or between the compressor and the compressor hose block. The main body defines a passage that allows for refrigerant flow through a filter which is positioned in the passage. In one preferred embodiment the diameter of the filter is greater than the inside diameter of the compressor inlet port. In another preferred embodiment the diameter of the filter is greater than the inside diameter of the suction hose assembly outlet port.

Abstract: A hydraulic axial piston pump comprising a cylinder block closed at sides by a head and by a containment casing for piston actuating a plate, an electric motor coupled to the plate, reversible locking means for a bypass valve inserted in a seat of the body and kinematically connected to a microswitch connected to the electric motor, the reversible locking means comprising a retention element insertable transversely to the seat in a receptacle formed in the body without structure discontinuity, the bypass valve head being integrated in a shell external to the body and enclosing the microswitch and the kinematic system.

Abstract: A miniature pump has at least one controllable expansion-and-contraction chamber, and associated pair of tiny ducts interconnecting a fluid source and destination. The ducts communicate with the chamber(s); an linking tunnel links the ducts. Valves interact with fluid pressures due to expansion and contraction, imposing directionality on flow in the ducts and tunnel. Preferences: making the valve a passive flapper, implanting the pump in a creature, making the source a medication reservoir for supplying the creature; making the source a fuel tank and destination a tiny engine; making the source provide a specimen for assay and destination an observation slide; human or automatic examination of the slide under a microscope (e. g. electron microscope); making the source a reagent and destination a process stream; making the source a colorant and destination a colorant application system. Preferably included is an optical channel with intersecting fluid duct for optically monitoring pumped fluid.

Abstract: A fuel pump having a pumping impeller and an electric motor integrally contained in a cylindrical housing is submerged in a fuel tank of an automotive vehicle. The fuel pump pumps up fuel in the fuel tank and supplies pressurized fuel to an internal combustion engine. To make the fuel pump compact in size, i.e., small in diameter and short in length, a power-receiving connector of the fuel pump is coupled to a power-supplying connector by facing both connectors in the circumferential direction around the axis of the fuel pump. Elongate terminals in the power-receiving connector and brushes are positioned to overlap each other in the rotational direction of the fuel pump.

Abstract: A fluidic machine has a fixed body, an external orbital member rotatable around a first rotational axis and internal gear teeth including a first teeth number, a transmission member rotatable around a second rotational axis, an internal orbital member supported by the transmission member, having external gear teeth including a second teeth number different from the first teeth number and meshing with the internal gear teeth of the external orbital member, thus determining among the gear teeth of the two orbital members spaces whose volume is variable during rotation. One of the orbital members is mounted axially displaceable and is pushed by an elastic push member in the direction producing a more extended engagement with the other orbital member, and a piston, mounted displaceable within the non-axially displaceable orbital member and resting against the axially displaceable orbital member, is subjected, to the pressure of the high pressure connection.

Abstract: Disclosed are a scroll compressor having a frame fixing structure and a frame fixing method of the scroll compressor. The scroll compressor comprises an upper frame installed at an inner upper portion of a hermetic container; a fixed scroll fixed to an upper portion of the upper frame; and an orbiting scroll orbitably installed between the fixed scroll and the upper frame, wherein a joining groove is formed at a lateral surface of the upper frame, a curved portion having a penetration hole is formed at a lateral surface of the hermetic container corresponding to the joining groove, and a welding portion fixes the hermetic container and the upper frame through the penetration hole.

Abstract: In a scroll fluid machine, a stationary scroll and an orbiting scroll are provided. On the stationary scroll opposing the orbiting scroll, an annular groove is formed. An O-ring, a flexible support ring and a sliding member are put in the annular groove. The support ring has legs between which the O-ring is held. The sliding member in sliding contact with the annular groove is placed on the support ring, thereby decreasing deterioration and keeping stable sealing.

Abstract: A scroll type compressor includes a housing defining a discharge pressure region, a fixed scroll member having a fixed base plate and a fixed scroll wall, a movable scroll member having a movable base plate and a movable scroll wall, a fixed wall slidably supporting the movable scroll member, a back pressure chamber defined on a back surface side of the movable base plate. A supply passage connects the back pressure chamber to the discharge pressure region and passes through a sliding portion between the movable scroll member and the fixed wall. A clearance at the sliding portion varies in response to a position of the movable scroll member in a direction in which the movable scroll member approaches to or leaves from the fixed wall, whereby cross-sectional area of the clearance where gas passes is varied to adjust pressure in the back pressure chamber.

Abstract: Tubular film die head for extruding single-layer or multi-layer film which has at least the following features: a substantially annular die gap, fastening elements which fix at least two components with respect to one another which together border areas bearing plastic melt within the tubular film die head, coolant-carrying elements. At least one part of the fastening elements is structured as coolant-carrying elements.

Abstract: An apparatus and a method for the separation of a material layer (4) hardened on a flat plane (2) serving as a reference by means of a flexible, elastic separating layer (1) arranged between plane and material layer and designed in the form of a film or a gel-like material, are provided.

Abstract: Thermoplastic polymers, rubbery polymeric components and reinforcing fillers are mixed and heated to a range of 380° F. to 440° F. The resulting mixture is then fed into a BANBURY mixer, with the resulting mixture fed into a diverter feeding two molds. The velocity of the piston of each mold being filled is controlled to thereby control the density of the molded product along its length (BANBURY is a registered trademark of Farrel Corporation). As each mold is filled, it is deposited in a cool water bath (50° F.–60° F.) while the next mold is being filled. The molds are sequentially transferred to an air cooling rack to complete the process. A texture, generally comprising indentations perpendicular to the longitudinal axis on the molded object, provides a frictional surface between the railway crosstie and the ballast beneath the crosstie.

Abstract: An articulated potter's wheel assembly in which the height and angle of the potter's wheel is adjustable relative to the user. A motor-driven wheel is mounted to an upper frame assembly that is adjustable for height, with the wheel being mounted at the front of the frame so as to be pivotable about a horizontal axis. The wheel is mounted to a pivotable table assembly that includes the motor and drive mechanism for the wheel. The height of the upper frame assembly is adjusted relative to a second, lower frame assembly by a motor driven jackscrew. A tank is also mounted on the upper frame assembly for dispensing water to aid in working the clay. A strap attaches proximate the pivot points of the table so as to pass across and support the user's back. The assembly may be configured as a free-standing unit or for wall-mount installation. The assembly accommodates wheelchairs, and can be used in standing or sitting positions.

Abstract: A printing system including a least two printheads, wherein a first printhead is actively maintained at a first temperature and a second printhead is actively maintained at a second temperature.

Abstract: A heating-type vacuum press device which has a small vacuum isolation chamber in which pressing is performed under vacuum without damage to seal packing, while heating. A lower fixed frame and an upper movement frame constitute a wall portion of the isolation chamber. A gas-tight sliding mechanism ensures gas-tightness between the lower fixed frame and the upper movement frame. Thereby, the isolation chamber is formed in a space defined by the lower fixed frame, the upper movement frame, a base and a fitting plate. The lower fixed frame surrounds a receiving table equipped with a heater for a workpiece, and is arranged on the base such that the lower fixed frame is spaced from the receiving table. The upper movement frame is hanged from the fitting plate such that the upper movement frame is spaced from a pressing plate equipped with a heater, and surrounds the pressing plate.

Abstract: A sheet material pressing machine for pressing a sheet material into a formed article may include a first die unit that can be opened and closed and a second die unit that can be opened and closed. The first and second die units are arranged and constructed such that closing operation of the first die unit and opening operation of the second die unit, or vice versa, can alternately occur.

Abstract: A manifold assembly is provided for conveying injection molding material from a molding material supply into a mold. The manifold assembly includes a manifold having a manifold flow passage extending therealong. The manifold assembly also includes at least one nozzle extending outwardly from the manifold to a distal end. The at least one nozzle includes a central nozzle passage extending from and in fluid communication with the manifold flow passage. The at least one nozzle extends on an angle from the manifold to be tangential to an arcuate surface of a part to be molded.

Abstract: A fixture (30) adapted to permit the heated exchange of a liner (14) from an operating vertical furnace (10). The fixture is adapted to secure to the base of the liner (14) to both unlock and lower the heated liner, such as a silicon carbide liner, at an controlled rate. The fixture is also adapted to elevate a new liner into the operating vertical furnace at a controlled rate to control the rate of heating of the liner as it is inserted into the operating vertical furnace. The fixture includes an inner ring (34), a low-friction Teflon® ring (36), and an outer ring (38) permitting the rotation of the inner ring within the outer ring. Advantageously, the low friction ring comprises a flanged portion and a vertical portion allowing rotation of the inner ring within the outer ring even when elevated at extreme temperatures exceeding 500° C.

Abstract: The invention relates to a shaft preheater for preheating material in lump form with at least one shaft for receiving the material, a bridge disposed in the shaft for delivering hot gases which flow through the material from the bottom upwards, and a device for filling the shaft with the material such that the shaft is charged centrally thereby developing a filling cone. The bridge is disposed at an inclination corresponding to the filling cone in order to guarantee an even flow through the fill. The device for filling the shaft comprises a vertically adjustable feed chute.

Abstract: An orthodontic distractor comprising a pair of telescopically interconnected channels, a drive screw operable to withdraw the inner channel from the outer channel and the outer channel being formed in the shape of a logarithmic curve.

Abstract: A dental curing device includes an elongate wand housing having proximal and distal ends, a light source disposed at the distal end, electronic circuitry at least partially disposed within the wand housing between the proximal and distal ends, and a heat sink. The light source may comprise one or more LEDs. The heat sink comprises a metallic heat sink portion adjacent to the light source and extending partially through the wand housing, and a polymer-based heat sink portion comprising a thermally conductive polymer-based material adjacent to the metallic heat sink portion. The polymer-based heat sink portion may comprise an epoxy-based resin that at least partially surrounds the electronic circuitry. The polymer-based heat sink portion advantageously extends through a portion of the wand housing designed to be gripped by the user when the dental curing light is in use.

Abstract: A method and a device for effecting the cordless retraction of the gingival sulcus tissue (21) prior to the taking of an impression of a tooth (20) for making a crown or bridge which is attained by controlling any bleeding in the gingival sulcus area (21), and utilizing a dental dam (24; 124; 224) preferably formed of a sponge or foam like material to contain an astringent fortified silicone impression material (26) embedded about the prepared tooth (20), and using the patient's biting force to apply the necessary pressure onto the dam until the silicone impression material (26) sets and adheres to the dam to enhance easy removal of the set impression material from the tooth (20). The dam (24; 124; 224) is formed to accommodate either the posterior teeth or the anterior teeth. The dam has retainers (125A, 125B; 225A, 225B) formed therein for aiding in holding the silicone impression material.

Abstract: An oral prosthesis fitment system includes a wax sheet having at least one face coated with a contact or pressure sensitive adhesive. A water activated adhesive is overlaid on the contact or pressure sensitive adhesive and the sheet is contoured by modeling over and around contact surfaces of a denture plate, with the adhesive coated surface facing outward. The denture is then placed in the oral cavity and the water activated adhesive composition is either premoistened or moistened by saliva. Compressive force is then applied to assure a proper fit.

Abstract: A dental kit for use in placing a dental post in a prepared recess (e.g., a root canal) of a person's tooth. The dental kit includes a finishing drill, a plurality of permanent dental posts, a dental post analog, and optionally, a starter drill. The kit also includes a container having an interior, means for suspending the kit components within the container, and a removable lid.

Abstract: A simulator structure with a deck for mounting various components including controls, one or two seats, an instrument panel and an image projector. The components are mounted to the deck using suitable fasteners, such as bolts and nuts. The image projector displays a computer-generated simulated environment. The instrument panel can include actual instruments or a computer-generated image. A dome-shaped image screen can be attached to the structure that can be tiltable on a horizontal axis or, alternatively, can be movable along an arcuate support.

Abstract: A two-wheeled vehicle motion simulation arrangement comprising a platform; a simulated two-wheeled vehicle; an arrangement for retaining the simulated two-wheeled vehicle relative to the platform with a roll axis; and a control system for imparting motion to the platform in response to control inputs from a rider. The arrangement can additionally include mechanisms for moving the platform over a support surface.

Abstract: The invention provides a method determining the correspondences between astrology and tarot, wherein identifying the astrological tarot correspondences of a subject's zodiac components. The invention provides a method determining the alpha-numeric signatures of a date, and the alpha-numeric signatures of a name. The invention provides an astrological tarot spread method, to providing the tarot nature of subject's zodiac components. The invention provides a circular astrological tarot chart, wherein the chart's sectors provide an astrological tarot correspondence.

Abstract: An education set used for education of a work including a series of work steps. The education set includes segment diagrams (105a, 105b, 105c) where work directions for executing the series of work steps, work directions including work guide information from which part of information is excluded, or work guide information are shown and subsegment diagrams (106a, 106b, 106c) where the information excluded from the segment diagrams are shown.

Abstract: A tool for and a method of communication that teaches children how to ask a person a question when the person is busy. Children learn to use any one of three tools that enable them to silently communicate a question without interrupting the person. The tools consist of a specialized sheet of paper, a plush toy sculpted into the shape of a question mark, and a dry eraser board. By handing one of the three objects to the person that is busy, the child is saying, without uttering a single word, “I have a question. I know you are busy right now. My question is really important. As soon as you are through doing what you are doing, I need to talk to you.” The person being questioned knows there is a question to answer as soon as he/she is able to do so. The child knows that the question has been acknowledged, a waiting period is involved, and that an answer will be forthcoming.

Abstract: A writing board structure includes a frame, a writing tablet of glass, and a background piece corresponding in size and shape to the writing tablet. The writing tablet and the background piece are held together in the frame such that a rear surface of the writing tablet comes in contact with a front surface of the background piece. The front surface of the background piece is provided with a white coating which is intended to furnish a front surface of the writing tablet with a white background. The front surface of the writing tablet is used for writing or drawing erasably with a pen, chalk, or the like.

Abstract: An arrangement for supplying power to loads provided in a motor vehicle, in which at least two units of electrical lines are combined, is disclosed. The lines are connected to both a voltage source and a load at each end. The loads are provided both on the body of the motor vehicle and on at least one pivoting part, such as a door. A contact carrier having a number of contact elements, which are isolated from one another and are made from a conductive and resilient material, is provided in the region of the axis of rotation, it being possible for this contact carrier to follow a pivoting movement of the moving part, while maintaining the electrical connection between the voltage source and the loads. The wire shaped contact elements are designed as helices having at least one turn, and have mating contacts on each end.

Abstract: A land grid array (LGA) socket connector (10) includes a number of contact segments (120, 140, 160, 180) and location members (122, 142, 162, 182). The contact segments are combined to form a substantially rectangular contact region. The location members are physically separated from one another, and further disposed around the respective corners of the combined contact regions to receive and hold an IC package (2) in position.

Abstract: A socket body is reinforced by inserted or press-fitted reinforcing members inserted so that a protruding table is eliminated and a width dimension thereof is reduced. Each socket contact has a first contact portion formed in substantially U-shape for elastically deformable. A header body has concave portions on upper face of the socket body (SIC). Each header post has a second contact portion disposed along a side wall of the header body and to be contacted with a first contact portion of the socket contact, and a curved portion formed in substantially reverse U-shape toward the concave portion from a vicinity of an upper end portion of the side wall of the header body. A curvature radius of the curved portion of the header post is established to be the smallest in a scope that a free end of the first contact portion of the socket contact contacts in the second contact portion side from a peak of the curved portion, and the socket contact is rarely buckled due to scratching with the curved portion.

Abstract: A connector includes a plug including a plug body made of an insulating material and at least one plug contact supported by the plug body; a receptacle including a receptacle body made of an insulating material and at least one receptacle contact supported by the receptacle body; a contact projecting portion formed on one of the plug contact and the receptacle contact; a contacting portion formed on the other of the plug contact and the receptacle contact; and a first projecting portion and at least one second projecting portion which is formed on the contacting portion, the second projecting portion being formed integral with the first projecting portion to be elongated in an insertion/extraction direction of the plug. A portion of the contact projecting portion is formed as a flat surface having a width greater than a width of the second projecting portion.