Abstract: A method for assembling a gas turbine engine includes coupling a rotor assembly including a plurality of rotor blades about a rotatable main shaft of the gas turbine engine. The main shaft is aligned in an axial direction of the gas turbine engine. A shroud assembly is coupled to the gas turbine engine. The shroud assembly includes a plurality of shroud segments circumferentially coupled about the rotor assembly such that a shroud spacing gap is formed in the axial direction between adjacent shroud segments. A cooling fluid source is coupled to each shroud segment such that cooling fluid is channeled through each shroud segment into a corresponding shroud spacing gap to facilitate positive purge flow through the shroud spacing gap.

Abstract: A turbine nozzle includes a mid vane mounted between a pair of end vanes in outer and inner bands. The mid vane includes a first pattern of film cooling holes configured to discharge more cooling air than each of the two end vanes having respective second patterns of film cooling holes.

Abstract: A multistage centrifugal pump in which each stage includes a one-piece or multi-piece housing and an impeller disposed therein. The pump stages are arranged between an inlet end member and an outlet end member and retained therebetween by connectors so as to be connected to a flow-guiding system. All impellers are positioned on a single pump shaft that is supported by at least two pump bearings. One end of the pump shaft is provided with a device for receiving a connector of a drive unit, and outer support members are disposed at mounting points adjacent the end members in order to mount the centrifugal pump in its installation location. The pump shaft (3) is supported by two two pump bearings (11, 12), with the maximum distance (LL) between confronting sides of the two pump bearings (11, 12) being less than or equal to a minimum structural stage height (LM) multiplied by the number of pump stages (2.1-2.5) minus 1.

Abstract: A water pump includes an impeller; an impeller shaft around which the impeller rotates; a first bearing portion that supports one end of the impeller shaft; a second bearing portion that supports the other end of the impeller shaft; a housing portion in which the impeller is inserted; and an upper housing including attachment holes provided at equal intervals in a circumferential direction, which are used to attach the upper housing to the housing portion, and a discharge port from which coolant is discharged.

Abstract: An airfoil is disclosed having at least first and second cast, axially-stacked internal airflow cooling circuits. Each circuit defines multiple air flow passages positioned laterally between a pressure sidewall side and a suction sidewall side of respective ones of the circuits. Each of the circuits is formed by a separate casting core. Methods of forming a axially-stacked core and an airfoil are also disclosed.

Abstract: An airfoil for a gas turbine engine includes a generally radially-extending first cooling channel disposed between pressure and suction sidewalls adjacent the leading edge of the airfoil, and a generally radially-extending second cooling channel disposed aft of the first cooling channel. The second cooling channel is closed off at an outer end thereof and is disposed in fluid communication with a forward inlet an inner end thereof. The first and second cooling channels are separated by a partition having a plurality of impingement holes therein. A generally axially extending end channel is disposed radially outward from the second cooling channel in fluid communication with the first cooling channel and with a dust hole disposed in the tip cap. The dust hole is sized to permit the exit of debris entrained in a flow of cooling air from the airfoil.

Abstract: A component for use in a gas turbine engine is provided. The component has an airfoil portion with a plurality of internal cooling passages and a non-linear trailing edge. The component further has a non-linear array of teardrop shaped assemblies which form a plurality of injection slots for injecting a coolant fluid into a fluid passing over the airfoil portion. The teardrop shaped assemblies are designed to maximize thermal performance of the component by reducing a relative diffusion angle between the injected coolant flow and the streamline direction of the fluid passing over the airfoil portion.

Abstract: A device for balancing a rotating part, in particular a turbine rotor in a turbomachine such as a turbojet or the like, the device comprising at least one balance weight comprising engagement means for engaging it on an annular flange of the part, and locking means associated with the balance weight and with the annular flange to prevent the balance weight from moving relative to the annular flange and to block itself against moving both in rotation and in axial translation relative to the balance weight.

Abstract: In a wind turbine (104, 500, 704) having a plurality of blades (132, 404, 516, 744) and a blade rotor hub (120, 712), a lightning protection system (100, 504, 700) for conducting lightning strikes to any one of the blades and the region surrounding the blade hub along a path around the blade hub and critical components of the wind turbine, such as the generator (112, 716), gearbox (708) and main turbine bearings (176, 724).

Abstract: A cooling system includes a cooling fan with an outlet and an inlet and a shroud surrounding at least a portion of the cooling fan. The cooling fan includes a plurality of fan blades, and each fan blade includes an inlet portion and an outlet portion that define an outer periphery of the fan blade. The outlet portion has a profile defined by a radial distance, perpendicular from a central axis of the fan, increasing in a direction towards the outlet. The average angle, relative to a central axis of the fan, of either a profile of the outlet portion or a profile of a portion of the shroud surrounding the outlet portion is between about ±15° of an average angle to the central axis at which a flow of fluid exits the outer periphery of the fan blades or between about 20° and about 70°.

Abstract: A wind blade spar cap for strengthening a wind blade including an integral, unitary three-dimensional woven material having a first end and a second end, corresponding to a root end of the blade and a tip end of the blade, wherein the material tapers in width from the first to the second end while maintaining a constant thickness and decreasing weight therebetween, the cap being capable of being affixed to the blade for providing increased strength with controlled variation in weight from the root end to the tip end based upon the tapered width of the material thereof. The present inventions also include the method of making the wind blade spar cap and a wind blade including the wind blade spar cap.

Abstract: In a fuel supply pump, a fuel relief path relieves a part of fuel, which is supplied through a part of fuel supply path connected between a control valve and a compressing chamber of a pump element, into a slidably contact portion between a plunger of the pump element and a plunger driving unit.

Abstract: A compressor includes a swash plate, and a shoe connected to an outer periphery of the swash plate. A surface of the swash plate slides upon a flat surface of the shoe. A sliding film is applied to the surface of the swash plate. The sliding film is formed of binder resin which contains a solid lubricant and titanium oxide powder. This allows the surface of the swash plate and the flat surface of the shoe to smoothly slide upon each other.

Abstract: A multi-stage rotary compressor to reduce a driving load and prevent a malfunction due to an abrupt pressure rising. In the compressor of the type including first and second compressing units mounted in a hermetic casing thereof to compress a gas, the gas being primarily compressed in the first compressing unit and secondarily compressed in the second compressing unit, the interior of the hermetic casing is divided into a plurality of spaces including first and second pressure chambers. The first pressure chamber surrounds the first compressing unit and is kept at a discharge pressure of the first compressing unit, and the second pressure chamber surrounds the second compressing unit and is kept at a discharge pressure of the second compressing unit.

Abstract: A diaphragm is provided in a pump case so as to define a pump chamber communicated with an external member having an air chamber. A motor actuates the diaphragm to introduce air to the air chamber. An exhaust valve exhausts air in the pump chamber to lower a pressure in the air chamber. In the exhaust valve, an exhaust port is communicated with the pump chamber. A flexible valve body having a larger size than the exhaust port is disposed so as to close the exhaust port from a side facing the pump chamber. An actuator is disposed in an opposite side to the valve body relative to the exhaust port, and driven by the motor so as to be movable between a first position retracted from the exhaust port and a second position passing through the exhaust port so that the valve body is actuated so as to open the exhaust port. An urging member always urges the actuator to the first position thereof.

Abstract: The invention concerns a fluid pump with a cylinder, piston and check valve for compressing the fluid having a high-pressure seal for precluding leakage of pressurized fluid. Any leakage from the high-pressure seal feeds back into an inlet area of the pump and recycles through the pump instead of leaking externally.

Abstract: A pump comprising a piston in communication with a valve chamber provided with a first valve seat and a second valve seat, and a resilient valve element comprising a first tapered portion, a second tapered portion and a flange portion extending from a periphery of the first tapered portion, in which the flange portion co-operates with the first valve seat to form an inlet valve, and the second tapered portion co-operates with the second valve seat to form an outlet valve, and in which negative pressure applied to the flange portion by the pressure means in use lifts it from the first valve seat, and positive pressure applied to the first tapered portion by the piston in use lifts the second tapered portion from the second valve seat.

Abstract: In a scroll fluid machine, an orbiting scroll is revolved with respect to a fixed scroll in a housing. A self-rotation-preventing device is provided to prevent the orbiting scroll from rotating on its own axis. The device comprises a pair of holders, one of which is disposed in an orbiting side and the other is disposed in the housing. The holder in the orbiting side comprises a bearing, a holding plate for holding the bearing and a plurality of ears. At least one of the ears is disposed within a circle passing through the centers of the holders around the center of the orbiting scroll.

Abstract: In a sheet forming part 2 of a soft capsule manufacturing apparatus 1, a drum drive system 27 which forms a gelatin sheet 13, and a pickup roller drive system 28 which peels off the gelatin sheet 13 are constructed to drive separately from each other. In the drum drive system 27, a film-sheet forming drum 23 is driven by a first motor 271, while in the pickup-roller drive system 28, a pickup roller 24 is driven by a second motor 281.

Abstract: High segmenting precision can be secured at a low production cost, and the dimensions of a gap between segmented pieces can be easily controlled. A tire vulcanizing mold (1) comprising an inner peripheral shape corresponding to the surface of a tire tread portion, and configured by assembling a plurality of circumferentially segmented pieces (1A), wherein at least one of the plurality of segmented pieces (1A) has a generally round-bar-shaped pin protector (100) on an assembling face (D) between an adjoining segmented piece (1A) in a projecting manner therefrom, and the adjoining segmented piece (1A) has a depressed groove (102) of generally arcuate in cross section for fitting the pin protector (100), on an assembling face (D) between the segmented pieces (1A) to be assembled with.

Abstract: The present invention relates to a resin-molded article with a spring structure, and to a method and apparatus for preparing a superficial layer of such a resin-molded article with a spring structure which has surfaces free from undulations, comprises fused filaments whose fusion is resistant to separation, maintains its cushioning activity and strength even after long use. A water flows from a cooling water outlet 53b into a space between a water-permeating sheet 55 and an inclined plate 51a. Some part of the flowing water C penetrates the water-permeating sheet 55 to appear on its top surface to form there an overlying current M on which receives lengthwise arranged peripheral continuous filaments, and agitates them to cause adjacent filaments to contact each other, to be entwined and gathered, thereby enabling the formation of a superficial layer of the three-dimensional structure 3.

Abstract: An extrusion method and apparatus (11) for producing a cable (1, 101) including at least one core (7) comprising at least one transmissive element (2, 40), and at least one pair of coating layers (8, 9) arranged at a radially outer position with the respect of the core (7) are described. The method of the invention includes the simultaneous steps of depositing by co-extrusion at least one coating layer (8) of polymeric material and one coating layer (9) of expanded polymeric material and of maintaining a residual pressure not greater than the external pressure in a substantially annular interspace (21) defined between the coating layers. With respect to the methods of the prior art, the present invention allows to avoid the formation of bubbles at the interface between said at least one coating layer (8) of polymeric material and the coating layer (9) of expanded polymeric material, attaining an optimal adhesion between said layers (8, 9).

Abstract: A lithographic apparatus is disclosed that has an imprint template or a template holder configured to hold an imprint template, and a substrate table arranged to receive a substrate, the apparatus further comprising walls which together with the substrate table and the imprint template or the template holder, are configured to form an enclosed space which is substantially sealed from a surrounding area.

Abstract: A nanoimprinting configuration includes a UV light diffuser that randomizes a collimated UV light beam so as to diffuse the shadowing effect from any defect object that resides in the UV optical path. In addition, a combination center circular pad and outer ring-shaped pad form a donut-shaped “non-contact” area between the two pad pieces. The size and shape of the two pad combination are designed to avoid direct gel pad contact above the patterned imprint zone on the disk substrate. The purpose of the gel pad, non-contact configuration is to eliminate any possible surface deformation incurred along the loading column and thereby avoid the elastic propagation of any deformations to the stamper resist surface.

Abstract: A moulding device for the production of containers in thermoplastic material, by blowing or blow-drawing, including a mould with two mould halves mutually mobile and provided with a locking device with two lock elements extending over the total height of the respective mould halves and provided with a number of projecting fingers in catches spaced at intervals, one lock element being fixed on one mould half and the other lock element sliding on the other mould half under the action of an actuator device.

Abstract: A mold split insert for use in a molding stack assembly, and in particular a preform mold neck ring insert for use in an injection molding stack assembly for making bottle mold preforms. The split insert comprises a body with a molding surface configured thereon. The split insert also includes a coolant channel configured in the body with a partition arranged therein. The partition dividing a portion of the coolant channel into a first and a second branch. A transfer coolant channel is configured between the branches.

Abstract: An injection molding hot runner nozzle includes a nozzle body comprising a nozzle core, a nozzle tip, and a melt passage extending through the nozzle body for conveying melt from a manifold through the nozzle tip and to a gate of a mold cavity. A cylindrical sleeve is disposed around the nozzle body, the sleeve being slidably removable from the nozzle body. A wire heating element for heating melt in the melt passage is is spirally wound about the sleeve. A temperature sensor comprising a wire is spirally wound about the sleeve.

Abstract: A discharge apparatus for a two-stage injection molding machine, includes a check shaft seat having a runner, and disposed between a feeding portion and an injection portion of the two-stage injection molding machine, for allowing a plastic material in the feeding portion to enter the injection portion via the runner; at least one check shaft disposed in the check shaft seat, and for opening and closing the runner via movement of the check shaft; at least one cover provided at a side of the check shaft seat, and having at least one discharge hole for discharging residues of the plastic material between the check shaft seat and the check shaft; and at least one adjustable unit for adjusting a discharge speed of the residues of the plastic material. The discharge hole and the adjustable unit can prevent locking of the check shaft and pollution from degraded residues of plastic material.

Abstract: In an injection molding tool including at least one hot channel nozzle to which a melt is supplied via a hot channel structure which at its end remote from the hot channel nozzle includes an inlet opening which can be closed by a closure element which is axially movably supported in the inlet part of the hot channel adjacent the inlet opening, the hot channel is angled and the closure element extends in sealed relationship through an angled wall area of the hot channel structure for actuating the closure member, the inlet area and an operating device for actuating the closure member being disposed in a separate unit removably connected to the injection molding tool.

Abstract: The invention relates to an apparatus for the thermal treatment of process exhaust gases containing pollutants, which can be used for a very wide range of surface modification processes carried out under a vacuum. The intention is to achieve the object of thermally treating process exhaust gases containing pollutants in such a way that accumulations of particles on the inner wall of a combustion chamber and an undesirable adverse effect on the thermal conversion can be avoided with little outlay.

Abstract: A candle container with a holder and burn control cover. The burn control cover and holder are configured in such a manner to create air intake vents for more efficient burning of a candle. The burn control cover includes a lower ring and an exhaust hole. A removable fitment attaches to the burn control cover through the exhaust hole for safe shipping and sealing of the candle container. A wax warmer container may attach to the candle container for scent distribution.

Abstract: This invention relates to a method to further enhance NOx reduction in rotary preheater mineral kilns by coupling the temperature control and gas composition uniformity afforded by the high temperature mixing with the use of chemical reducing agents. The chemical reducing agent or agents, generally chosen from ammonia or ammonia precursors, are introduced at a specific point in the rotary preheater kiln which has as an optimal temperature window to achieve the greatest reduction of NOx emissions.

Abstract: A change-over apparatus for cooling a gas passage is provided with a cooling chamber and a gas cooling and circulating system. The apparatus is further provided with a stationary partition plate and a slidable shield plate. The stationary partition plate has a suction opening and a discharge opening which are independently communicated respectively with a suction port and a discharge port, and the slidable shield plate has a shield part for partially shielding the suction opening and the discharge opening, whereby it is possible to alternately change over the direction of the gas passing through the cooling chamber.

Abstract: According to one embodiment, a heating apparatus includes, a heating chamber, a fan provided in the heating chamber, the fan blowing atmosphere upward, a heater provided in the heating chamber and above the fan, the heater heating the atmosphere blown by the fan, a plurality of first straightening vanes arranged in a substantially horizontal direction so as to be spaced apart from one another in the heating chamber and above the heater, a plurality of second straightening vanes arranged in a substantially horizontal direction so as to be spaced apart from one another in the heating chamber and above the first straightening vanes, each of the plurality of second straightening vanes overlapping both of its adjacent first straightening vanes, and a transfer unit which transfers a board, at least part of the transfer unit being provided in the heating chamber and located above the second straightening vanes.

Abstract: A semiconductor wafer baking apparatus includes a hot plate, a container of which an upper part is open, and a cover that covers the upper part of the container. The cover includes an upper plate, a lower plate and a side wall that form a gas circulating space therebetween. At least one gas inlet is formed in the side wall, a plurality of gas supply holes are formed in a central region of the lower plate, and a skirt on which is formed a gas exhaust unit is coupled to a lower edge of the cover.

Abstract: An orthodontic appliance includes a latch that comprises at least one clip for retaining an archwire in an archwire slot of the appliance. The clip includes a first section, a second section opposed to the first section and a third section that interconnects the first section and the second section. The third section is adjacent the base and includes an outer edge having a convex shape in contact with a wall portion of the base. The convex shape facilitates opening the clip during insertion of an archwire into the archwire slot of the appliance.

Abstract: An apparatus and method define a fit a set of upper and lower teeth in a masticatory system of a patient by generating a computer representation of the masticatory system of the patient; and determining an occlusion from the computer representation of the masticatory system using one or more keys.

Abstract: A system for straightening teeth includes a casting of teeth that is made of a rigid material, and a gum casting made of a flexible material that is joined to the teeth casting. A respective articulating tool for each tooth is provided with a post that is embedded into the tooth. Tooth moving components, accessible through the gum casting, are mounted on each post to selectively provide for left-right, fore-aft, and rotational tooth movements. In its operation, the system involves selectively orienting individual teeth in the teeth casting, to prepare a series of sequentially useable appliances that will straighten teeth in accordance with a pre-planned procedure.

Abstract: A suction nozzle holster whose upper rim is provided with a notch into which a suction hose can be forced in order to constrict the hose and, hence, curtail the vacuum conditions in a suction nozzle.

Abstract: The improved molar and/or pre-molar dental implant embedded in the bone of a person's (a dental patient's) jaw prevents a possibility of the implant's pivotability into the extracted tooth socket after insertion. An improved dental implant includes an upper portion, a basis and a lower portion of the implant's body. The upper portion comprises a main neck, a rim and a conic rhomboid form head, including an aperture comprising an inner thread. The lower portion includes a rod comprising the plurality of extensions, and a transverse space crossing the rod along its lateral axis.

Abstract: A system for reimplanting avulsed teeth includes a dental splint having a pre-shaped channel that releasably engages a dental arcade having one or more avulsed teeth. The avulsed teeth are reinserted into their sockets and the dental splint is positioned over the dental arcade. The dental splint is worn continuously until reattachment is substantially attained. One embodiment provides masticatory surfaces to the dental splint that assist a user in eating while wearing the dental splint. Another embodiment provides a resilient layer to an engagement surface of the dental splint, which conforms to and engages the dental arcade. Adhesives may be disposed between the dental splint and the dental arcade when necessary.

Abstract: A modular human habitat simulator for providing an environment on Earth that approximates, in a controlled test situation, a number of conditions expected to exist when an inflatable modular habitat is deployed into Earth orbit. The simulator has a housing with a rigid wall defining an internal volume, a longitudinal axis, a first and second opposing openings along the longitudinal axis, the rigid wall having an exterior surface, and an interior surface where the interior surface is generally the shape of an interior surface of a deployed inflatable shell of a modular human habitat, and the internal volume is substantially that of a deployed inflatable modular human habitat volume.

Abstract: Systems and methods for providing and using a teaching aid that enables swimmers to develop correct mechanics and movement patterns of a flip turn. A teaching aid is provided that functions to expedite the teaching and learning of proper flip turn mechanics by providing an object for a swimmer to place his/her hands on and press down for support, tactile feedback and spatial orientation as the swimmer learns to initiate and perform a proper flip turn. Utilization of the teaching aid allows a swimmer to feel and move through the proper mechanics of the flip turn, thereby expediting the swimmer's ability to perform the turn without assistance.

Abstract: A system and method for generating and administering classroom exercises to a student. One or more root questions is generated, where each root question has a stem, a plurality of right answers, and a plurality of wrong answers. A multiple-choice question instance is created by combining the stem with a set of answer choices that are created from one of the right answers and one or more of the wrong answers. The questions are administered to a student. Preferably, the sets of questions based on the same root questions are administered one or more times to the student—e.g., a student may be required to work three sets of question instances based on the same set of root questions, or may be required to continue working new sets of question instances until all of the questions in one set are answered correctly.

Abstract: A slide track mounting or a contact brush mounting for a sliding contact assembly comprises insulators having a surface structure that is a combined microstructure and nanostructure. Thereby an accumulation of dirt and abraded particles from contact brushes on the insulators is substantially reduced. This allows creep paths to be shortened and periods between maintenance operations for cleaning to be prolonged.

Abstract: A circuit board for receiving and operably connecting a plurality of electrical components generally comprises: a flexible substrate of a predetermined length and having a first lateral edge and a second lateral edge; a conductive trace applied to the flexible substrate; and a plurality of integral tabs arrayed along the first lateral edge, one or more electrical components being operably connected to the conductive trace at a respective tab, and wherein each tab can be manipulated from a first position in which the tab is aligned with the remainder of the substrate to a second position in which the tab is oriented at an angle relative to the remainder of the substrate.

Abstract: An electrical connecting apparatus comprises: a base plate provided with a first and a second mounting portion groups respectively having a plurality of first and second mounting portions arranged so as to be alternately positioned in a first direction; and a first and a second contact groups respectively having a plurality of first and second contacts individually mounted on the first and second mounting portions and in a cantilever state, the first and second contacts being displaced from each other in a second direction intersecting the first direction at the mounting positions on the base plate. This prevents any damage to adjacent mounting portions due to heat at the time of mounting the contacts, so that an arrangement pitch of the contacts can be made small.

Abstract: An electrical connector includes an insulating body, and a plurality of pins received in the insulating body. The pin has a main portion and a flexible arm. Two separate supporting arms extend upwards from main portion. The flexible arm extends along the lengthwise direction of the main portion. There is a slot opening between the two supporting arms. The flexible arm is compressed and passes through the slot opening. Compared to the prior art, the structure of the electrical connector of the present invention is simple, and the pins can be disposed in a dense manner.

Abstract: A land grid array (LGA) interposer structure, including an electrically insulating carrier plane, and at least one interposer mounted on a first surface of said carrier plane. The interposer possesses a hemi-toroidal configuration in transverse cross-section and is constituted of a dielectric elastomeric material. A plurality of electrically-conductive elements are arranged about the surface of the at least one hemi-toroidal interposer and extend radically inwardly and downwardly from an uppermost end thereof into electrical contact with at least one component located on an opposite side of the electrically insulating carrier plane. Provided is also a method of producing the land grid array interposer structure.

Abstract: An electrical connector assembly comprises an insulative housing (11), a plurality terminals received in the housing (11), a locating frame (12) mounted on an upper surface of the housing (11), a plurality of locating pins (15) for connecting the locating frame (12) and the housing (11) to the printed circuit board (14). The housing (11) defines a plurality of receiving holes (111), which defines a plurality of spaced deformable retaining portions (112) separately on the inner wall thereof, and each deformable retaining portion (112) defines two slant surfaces (113) on two sides thereof.