Abstract: An airfoil for a gas turbine engine, the airfoil includes a plurality of cooling air passages to supply cooling air to an external surface of the airfoil, the cooled surface of the airfoil having a critical temperature in which any cooled surface of the airfoil should not exceed, the cooling air passages having a coating applied within the passages, the coating being made of a material that has an oxidizing property such that the material oxidizes away and opens the passage to more flow when exposed to a temperature above the critical temperature. When the airfoil surface is not properly cooled by a flow passing through the passage, the material oxidizes away until the size of the passage increases to allow for the proper amount of cooling air to flow to cool the airfoil. Each passage is located in a different part of the airfoil that requires more or less cooling flow, and each passage will oxidize until the size of the passage is large enough to allow for the proper amount of cooling flow.

Abstract: A cantilevered stator stage for the axial compressor 14 of a gas turbine engine 10 in which the stator tips 26 rub against an abrasive section 24 on the rotor drum 22 during initial running of the engine 10 to abrade the tips 26 of the stator to provide optimised stator tip running clearance.

Abstract: A seal system comprises a rotor and a stator. First and second cavities are defined between the rotor and the stator. A plurality of seals for inhibiting a flow of gas through the cavities are provided. Relative motion between the rotor and the stator can cause a flow of gas through the cavities via the seals. The. seals are arranged such that an increase in pressure in one of the first and second cavities is offset by a decrease in pressure in the other of the first and second cavities.

Abstract: A centrifugal fan with stator blades. The centrifugal fan includes a first frame, a second frame, a driving device, and a blade structure with a first portion and a second portion. The second frame includes a plurality of stator blades thereon. The first portion is coupled with the driving device, and includes a plurality of first rotor blades thereon. The second portion is combined with the first portion and includes a plurality of second rotor blades thereon. The stator blades are located between the first rotor blades and the second rotor blades respectively.

Abstract: A turbine disk comprising a disk bore disposed about a centerline, the disk bore comprising a bore width, and a web extending radially away from the disk bore wherein the disk bore comprises in cross-section a contoured shape comprising a contour depth.

Abstract: The composite turbomachine blade of the present invention comprises a preform made of yarns or fibers woven in three dimensions and a binder maintaining the relative disposition between the yarns of the preform. Said preform is made up of warp yarns and of weft yarns, the direction of the warp yarns forming the longitudinal direction of the preform. In characteristic manner, said preform comprises at least a first portion made using a first weave forming the airfoil of the blade, and a second portion made using a second weave forming the root of the blade, and the first and second portions are united by a transition zone in which the first weave is progressively modified to end up with the second weave, thereby obtaining a reduction at least in the thickness of the blade between the second portion and the first portion. The invention is applicable to making a fan blade for a turbojet.

Abstract: An arrangement for reducing vorticity downstream of a turbine nozzle guide vane 34 in a gas turbine engine. The arrangement including directing cooling air through the guide vane 34 and out through outlets 40 in directions to counteract the wave vorticity produced downstream of the guide vane 34.

Abstract: The invention relates to a rotor having at least three blades disposed between a front cover plate and a rear cover plate, the art of the suction edge of at least one blade, in the top view of the inlet side of the pumping medium, following a sinusoidal path with a single turning point W. The present invention is also directed to the use of the rotor in a centrifugal pump to pump coolant in a motor vehicle.

Abstract: Embodiments of the present invention feature a method and apparatus for detecting defects, such as, leaks, component failure and adverse performance. One embodiment of the present apparatus for pumping fluid comprises a pumping chamber having an inlet and an outlet powered by a motor. The motor operates in pumping mode upon receiving a pumping signal. The apparatus further comprises at least one inlet valve in fluid communication with the inlet of the pumping chamber. And, the apparatus comprises a switchable valve in fluid communication with the outlet of the pumping chamber. The switchable valve has a closed position and an open position, and assumes the closed position upon receiving a close signal. A pressure measuring device is in fluid communication with the pumping chamber, between said inlet valve and switchable valve. The pressure measuring device determines a minimal pressure and first threshold pressure at a first time and a second threshold pressure at a second time.

Abstract: A method of adjusting a rotary machine includes the steps of press fitting an adjustable member to one of a housing and a rotary body where the adjustable member is arranged to a reference position at which movable amount or a rotary body is zero, and adjusting the movable amount of the rotary body in a direction of a rotary axis to the predetermined amount by varying a position of the adjustable member that is press-fitted to the one of the housing and the rotary body from the reference position by the predetermined amount in a direction in which the movement restricting part and the contacting part contacting with each other are separated from each other.

Abstract: A method for assembling a motor shaft with a bearing, a motor housing, and an impeller is disclosed. A motor shaft extension is used to retain the impeller axially on the motor shaft and allows the motor shaft to drive an additional component, such as an impeller, located a distance from the motor. The motor shaft extension may be fabricated from aluminum or hardened steel. Additionally, the motor shaft extension may be embodied in a tube extending past the end of the motor shaft and a shaft extension pressed into the end of the tube.

Abstract: Disclosed is pump for circulating a liquid coolant between a heat generating device and a radiator. The pump includes a casing forming an upper chamber in which a blade assembly comprised of a plurality of blades and a permanent magnet coaxially attached to the blades is rotatably received and a lower chamber accommodating an electrical magnet comprised of silicon steel plates surrounding the permanent magnet. The permanent magnet includes first and second magnet elements coaxially aligned with and stacked to each other. The magnetic poles of the first and second magnet elements are arranged in a non-symmetric alternating manner. In other words, the magnetic poles of the first and second magnet element are angularly shifting an angle that does not correspond to 90 or 180 degrees.

Abstract: A flexible tube has a first portion and a second portion located close to each other in the vicinity of an opening of an accommodating case. A pressing member moves from the first portion to the second portion along the tube while pressing a portion of the tube. An auxiliary member is provided in the vicinity of the opening of the case. The auxiliary member has an auxiliary surface. When the pressing member passes the vicinity of the opening of the case, the auxiliary member transfers the pressing member from the second portion to the first portion via the auxiliary surface. This structure ensures a silent operation of the tube pump.

Abstract: A piston machine includes a cylindrical wall (2) defining a swept volume (1) and having a plurality of gas inlet openings (5), and a piston (3) reciprocating in the swept volume (1), and the piston head (12) of which is formed as a valve having a plurality of openings (14) provided in the piston head (12), and a forcelocking device (16, 21; 18, 24) for retaining the plurality of openings (14) in one of their open condition and closed condition.

Abstract: A scroll fluid machine has a fixed scroll in a housing and an orbiting scroll rotatably mounted to a driving shaft. A fixed wrap of the fixed scroll is engaged with an orbiting wrap of the orbiting scroll. The orbiting scroll is revolved at a certain eccentricity by the driving shaft, so that a gas sucked through the circumference of the housing is compressed as it moves toward the center, and discharged through the center. A gas-guiding bore is formed near the center of the orbiting scroll, and a heat-releasing rod is inserted in the bore. One end of the heat-releasing rod is projected from the fixed scroll to release heat to atmosphere.

Abstract: A positive-displacement pump, in particular for use in machines or dispensing fluids, including two elements that are with respect to one another and which mesh with one another (20, 30), each of them being rotatably mounted in the pump with centered coupling without interference with a corresponding centering body (18, 11a). At least one of the two above-mentioned ratable elements has a plurality of undercut regions (26, 34, 35)) at the location of the centering walls. The undercut regions (26, 34, 35) comprise a wall portion which is spaced with respect to the facing wall of the respective centering body.

Abstract: An apparatus for producing and winding synthetic multifilament yarns, which has a spin unit 1 for melt spinning the yarns, at least one treatment unit 7 for treating the yarns, and a takeup unit 16 with a plurality of winding positions for winding the yarns. The winding positions 17.1-17.3 are distributed along a horizontal axis of the takeup unit 16, with a driven guide roll 12 and a yarn guide 15.1-15.3 for each winding position being arranged upstream thereof for advancing the yarn. To prevent different yarn deflections despite a different spacing between yarns while treating and while winding the yarns, the invention provides for orienting the guide roll 12 with its roll axis in the vertical direction to guide the yarns, and for arranging it laterally adjacent the yarn guides 15.1-15.3 such that the yarns can be advanced substantially in parallel relationship between the guide roll 12 and the yarn guides 15.1-15.3.

Abstract: This invention pertains to a system for thermally treating a photosensitive element to form a relief structure suitable for flexographic printing. The system of the invention comprises a plurality of consecutively arranged blotting stations for removing uncured photopolymer from the imaged surface of the photosensitive printing element. The flexographic plates produced in the apparatus of the invention are especially suited for use in printing newspapers and other publications.

Abstract: A center touch method and apparatus for use in a contact lens station for use with a contact lens mold assembly comprising a first mold half and a second mold half. The center touch apparatus comprises a center touch engaging member having a center touch engaging surface for engaging a central portion of a non-molding surface of one of the mold halves. The center touch method comprising driving one of the mold halves toward the other mold half using the center touch engaging member to contact a central area of the non-molding surface of the one mold half.

Abstract: An apparatus imparts concaves/convexes to a sheet-like object by passing the sheet-like object between a pair of rollers facing each other. At least one of the rollers is a roller a surface of which is formed by laminating a single or a plurality of circular plates each provided with concaves/convexes at a peripheral edge thereof. An interval keeping mechanism is provided between the circular plates provided with concaves/convexes at the peripheral edges. At least one of the rollers is formed with a roller surface by laminating a single or a plurality of circular plates each having only convexes of concaves/convexes portions at a peripheral edge thereof. By the roller, convexes can be imparted to one face of front and back surfaces of a sheet-like object.

Abstract: The invention relates to a pelleting press for the production of feed pellets for the like. The aim of the invention is to enable easy and economical separation of the mold in order to change said molds. This is achieved in that guided clamping elements (17) are arranged between the mold (8) and a pressure ring (13) of the mold carrier (11) in such a way that they can be displaced axially (11) so that the mold (8) can be released and clamped by axial displacement by means of a flat contact surface between the screws (18) of the clamping segments (17) and the pressure ring (13).

Abstract: In a roller adjustment apparatus for an extrusion mill, comprising a cylindrical die (2) with radially extending extrusion channels and a number of rollers (1) within the die, rotatable about their axes and co-operating with the die to press material to be treated through the extrusion channels in the die wall, the adjustment apparatus comprises eccentrically journalled bearing shafts (3) for mounting the rollers (1), said eccentrically journalling of the shafts (3) providing a radial adjustment of the position of the rollers (1) relative to the die (2), the rotation of the eccentrically journalled shafts (3) is provided by means of extension arms (6) fixedly mounted on the ends of the eccentrically journalled shafts (3), and said extension arms (6) being connected to an axially movable connection element (8) by means of articulated connected linkage rods (7), and said connection element (8) being connected to a rod (9) provided with its axis in the axis of the die (2) and extending to a position outside the

Abstract: A machine for compression molding plastic closures includes a support mounted for rotation around an axis, and a plurality of compression molds on the support at angularly spaced positions around the axis. Each of the molds includes a male mold section and a female mold section, at least one of which is movable with respect to the other between a closed position to form a compression mold cavity and an open position spaced from each other. The male mold section includes a mold core and a stripper sleeve surrounding the mold core for movement both rotationally and axially of the mold core. A first screw drive couples the female mold section to the stripper sleeve for rotating the stripper sleeve around the mold core as the at least one mold section is moved between the closed and open positions. A second screw drive couples the stripper sleeve to the support to move the stripper sleeve axially over the mold core as the stripper sleeve is rotated around the core.

Abstract: A device for blow-molding or stretch blow-molding of thermoplastic material performs, the mold including two half-molds and a mold base mutually mobile through actuating devices controlled by a fixed cam. A link rod device with three degrees of freedom in rotation is provided between one half-mold such that upon opening the two half-molds are spaced apart from each other without moving the base, then so that the base moves axially while the two half-molds continue to be mutually and completely spaced apart, and vice-versa.

Abstract: A thick-film electric heater having thick-film layers applied directly on a thermally conductive non-flat substrate. Preferably, the substrate is cylindrically shaped. A dielectric layer is silk-screened on the substrate surface. A resistive layer is silk-screened on the dielectric layer to form a circuit for the generation of heat. The resistive layer has at least one resistive trace in a pattern that is discontinuous circumferentially. At least a pair of silk-screened contact pads are applied in electrical communication with the resistive layer for electrical connection to a power source. An insulation layer is applied over the resistive layer.

Abstract: A screw tip is provided in front of a screw with a shaft interposed therebetween, and a check ring is fitted around the shaft. The check ring is separated from a front end portion of the screw when the screw is rotated in a forward direction. The check ring contacts the front end portion of the screw when the screw is advanced. A front end surface of the check ring is provided with teeth, and a rear end surface of the screw tip is provided with grooves with which the respective teeth are engaged. Respective one side surfaces of the grooves and the teeth which are pressed against each other when the screw is rotated in the forward direction are formed vertical to the front end surface of the check ring, and side surfaces thereof located on the reverse sides of the above respective one side surfaces are inclined.

Abstract: A device includes a sliding base, supporting posts, and hydraulic oil; the sliding base has cavities, an oil passage communicating with the cavities, and oil seals secured around respective cavities, and it is movable along a guide rail secured on a bed of an injection molding machine; the supporting posts each have a room on a lower end, and are inserted in respective cavities such that the rooms communicate with the cavities; the posts touch and prop a movable wall of the molding machine at upper ends, which wall is supported by and movable along guide rods, and has bushings around the guide rods; the hydraulic oil is injected into the sliding base and the posts until the axes of each bushing and the corresponding guide rod are aligned; thus, alignment of the axes of each bushing and the corresponding guide rod will be maintained when the movable wall is moving.

Abstract: Method and apparatus for enhancing the combustion of a process gas of variable composition which gas is used for steam generation in producing heavy oil. The mass flow of the process gas containing hydrocarbons, carbon dioxide and water is measured. It is assumed that the process gas is saturated with water vapor and the water content of the process gas is then obtained. The content of carbon dioxide in the process gas is nominally obtained with an oxygen analyser measuring the flue gas from a steam generator thereby giving a close approximation of hydrocarbon content and allowing an expedited calculation of the energy content and air required. The nominal carbon dioxide value is compared with the calculated carbon dioxide value based on the actual flow of process gas and purchase gas and the oxygen content so that the quantity of carbon dioxide is approximated.

Abstract: A modulating gas burner control system using closed loop feedback from a flame rod which provides a signal that varies with gas pressure and which provides combustion air fan control to accurately control the heat from the system without use of expensive control valves.

Abstract: The catalytic combustion burner made from a porous material is designed to cooperate with a wick that will carry a combustible composition to the burner that penetrates into the pores of the porous material, and comprises a peripheral zone that supports a catalyst and that surrounds a central zone without a catalyst forming a vaporization zone, the peripheral zone and the central zone being located in the upper part of the burner. The burner has a tapered peripheral surface flaring upwards.

Abstract: A flame arrestor for a flowing explosive gas (4), having a flame barrier (10, 20, 30) with a large number of defined passage gaps (17, 18), whose gap cross section is set with regard to the properties of the flowing gas (4), is cooled effectively and secured against a flame flashback in the case of continuous combustion by the fact that second gaps (18) having a smaller gap cross section are arranged adjacent to the first gaps (17) having the selected gap cross section.

Abstract: In a burner (1) having an interior space (22) surrounded by at least one shell (8, 9) in which burner (1) fuel is injected through fuel nozzles (6) arranged at the burner shells (8, 9) into a combustion air stream (23) flowing within the interior space (22), the fuel/air mix which is formed flows to a flame front (3) in a combustion chamber (2) within a delay time (?), where it is ignited, the formation of combustion-driven thermoacoustic oscillations is avoided by virtue of the fact that means (24), which allow fuel to be injected into the combustion air stream (23) via at least two fuel injection holes (25) distributed over the length of the means (24) are arranged so as to project from the burner base (27) into the interior space (22) substantially in the direction of the combustion chamber (2), so that the delay time (?) between injection of the fuel and its combustion at the flame front (3) corresponds to a distribution (12) which avoids combustion-driven oscillations in premix operation.

Abstract: This invention relates to a casting sand heating apparatus. The purpose of this invention is to provide a casting sand heating apparatus which can heat sand up to 300° C. or higher with high energy efficiency, lower capital investment and lower operating costs. This apparatus is comprised of a furnace body, sand inlet, smoke discharge and dust removing port, hearth and sand outlet. The sand inlet is arranged at the top of the furnace body, the combustion mouth is arranged in the lower part of the furnace body. Additionally, the heat exchange apparatus is arranged in the middle part of the furnace body. This invention can be used for the heating and baking of fresh and used casting sand.

Abstract: A burning oven is provided, and has a housing that surrounds a combustion chamber in which material that is to be burned can be introduced after the housing is opened and can be placed upon a combustion chamber base. A deposit element is disposed externally of the combustion chamber, and has a deposit surface that is formed at least partially of glass ceramic.

Abstract: A vertical wafer boat for supporting at least one semiconductor wafer, formed by a process includes forming a plurality of angled support grooves into a plurality of support members with a groove-making machine. Each support member extends along a longitudinal axis and each of the support grooves is spaced apart from one another and extend generally obliquely into the respective support member with respect to the longitudinal axis. The groove-making machine is positioned at a nonperpendicular angle with respect to the longitudinal axis, and thus defines an angled tooth between adjoining support grooves to support at least one wafer, and each support groove includes top and bottom corners inside a base portion that are generally supplementary with respect to each other. Top and bottom portions of the plurality of members are joined to top and bottom end plates that oppose each other respectively, to form the wafer boat.

Abstract: Systems and methods are disclosed for repositioning the teeth of a patient by providing a digital model of each tooth of the patient; determining one or more root parameters from the digital model; and digitally moving one or more tooth models and evaluating a treatment outcome based on one or more root movement clinical constraints.

Abstract: A method and a device for effecting the cordless retraction of the gingival sulcus tissue that includes a dam shaped to be fitted onto a tooth. The dam having a peripheral wall defining a well. The peripheral wall may be either pervious or impervious to light rays and opened at least one end. The well of the dam is pre-filled with a predetermined amount of a flowable retraction material having a heavy viscosity or putty consistency. The preloaded tooth dam is fitted to a prepared tooth so that when pressure is applied onto the tooth dam, the retraction material is displaced under pressure and forced into the sulcus, causing the gingival tissue to retract away from the tooth to enlarge the gingival sulcus. In one form of the invention, the structure of the dam enables the retraction material to mechanically bond or adhere to the internal surfaces of the dam, permitting the retraction material to be removed simultaneously with the removal of the tooth dam to leave behind a clean enlarged sulcus.

Abstract: A method and devices for bone tissue expansion and compression for receiving a dental implant are disclosed. The method includes the steps of creating an initial osseotomy site in the maxilla or the mandable using a pilot drill; screwing a first threaded expander into the site to expand the site laterally; and allowing the expander staying in the site for a short time to impress the interior wall of the osseotomy site; then retrieving the first expander. These steps are repeated using a second, and/or third threaded expander having an increasing outer diameter to further expand the osseotomy site to a final diameter which is complementary, but narrower than the diameter of the dental implant so that expanded osseotomy site enables uniform engagement of the implant with the bone tissue. A preparation drilling to extend osseotomy site only at cortical level can be incorporated for hard bone and larger implants.

Abstract: The invention concerns an active and an interactive birth simulator for duplicating human pregnancy and the birth process, whereby the birth simulator has the following features: A womb torso 1, a child model 2, which is arranged in the womb torso 1, whereby natural shape, size and positional ratios are preferably maintained, and the child model 2 is connected to a controllable drive 5 via a coupling device 7, in order to move the child model 2 in the womb torso or to expel it from the womb torso 1 through the birth canal and a programmable control device is provided for controlling the drive 5.

Abstract: A wire harness for a truck, truck and trailer, a recreational vehicle or bus includes a rear removable connector positioned adjacent to the rear of the vehicle, a first cable attached to the bottom of the vehicle having one end attached to the rear removable connector and the other end attached to the vehicle's electrical load. The vehicle's electrical load is enabled when the rear removable connector is connected to an external power source, which is generally known as shore power.

Abstract: A socket may receive both ball grid and land grid array packages. Thus, in some embodiments, the early package prototypes, without solder balls, may be packaged in the same socket design that is ultimately used for production devices using ball grid array packaging. Both land grid array and ball grid arrays may be self-centered on the socket in some embodiments. An S-shaped spring contact may be utilized to electrically connect to either solder balls or lands in a wiping action.

Abstract: Modules for fixing flexible printed circuit boards. A module comprises a casing and a flexible printed circuit board. The casing has a recess on a lateral side. The flexible printed circuit board has a flexible portion disposed in the recess, wherein the thickness of the flexible portion is substantially equal to the thickness of the recess.

Abstract: The invention relates to an interposed electrical connector which is intended to connect two stacked electronic circuits and to the method of mounting same. The inventive connector (1) comprising plugs (4) which are borne by a base (4), a guide (11) and guide means (12) which are disposed between the guide and the base. According to the invention, at least some of the aforementioned plugs (4) project out from the base (10) such that they can be slid into a housing (13) that passes through the guide (11). The guide means (12) comprise a first projecting part (14) which is solidly connected to the base (10) and a second complementary part (15) which is solidly connected to the guide (11). The base (10) is intended to be fixed to a first circuit while the first part (14) of the guide means (12) is intended to be guided through the second part (15) of the guide means (12) as well as a second circuit (3).

Abstract: A circuit board connector has a housing 10 and terminal fittings (30) mounted in the housing (10). The terminal fittings (30) have board connecting portions (34) drawn out of the housing (10). The board connecting portions (34) are arranged on the surface of a circuit board (K) and connected with conductors on the circuit board (K) by soldering. Notches (36) are formed in lateral edges (37) of the board connecting portions (34) and have upward-sloped surfaces (39) to which solder (H) applied to the conductors adheres. A solder test is conducted by observing from above the adhered state of the solder (H) to the sloped surfaces (39) of the notches (36).

Abstract: A vehicular ground terminal, according to one embodiment of the present invention, provides a location to which an electrical connection may be made to a body of a vehicle that is easy to identify and use. The ground terminal includes a first ground block component connected to the body of the vehicle and a second ground block component detachably coupled to the first ground component. The second ground block component includes a base portion having a first width and a passageway therethrough, the first ground block component extending into the passageway and a connection portion attached to the base portion having a second width that is less than the first width and a polygonal shape.

Abstract: This system for electrically connecting and fastening at least one plate-type electrical conductor to a support piece provided with a nut designed to cooperate with a fastening screw of the conductor is characterized in that an annular spacer of electrically conductive material is joined to support piece on the side of this piece that is facing the conductor and in that nut is disposed on the other side of the support piece opposite this spacer and is connected to this spacer by floating coupling means designed to extend through a corresponding hole in this support piece and to prevent at least the nut from rotating on this piece.

Abstract: A portable storage device (1) includes a memory device with a USB interface (20) and a protective cap (30) detachably mated with the USB interface. The USB interface may be a conventional one, which has a metal shell (21) defined pair of holes (213) therein. The protective cap has a case (31), a spring member (34) mounted therein and a button (33) engaged the spring member. The spring member defines a hook section (343) thereon to engage with the hole of the USB interface. To press said button inwardly disengages the hook section of the spring member from the hole of the USB connector, thereby detaching the USB interface from the cap.

Abstract: A junction block assembly includes a junction block holding at least two first connectors, and at least two second connectors that mate with the first connectors. To reduce the force required to assemble the connectors, first and second cam levers are rotatably mounted to the junction block. The first and second cam levers each engage one of the second connectors and pull the engaged second connector into connection with a mating one of the first connectors. An arm of the second cam lever travels past an arm of the first cam lever during rotation.

Abstract: An electrical connector including electrical contacts; a housing having the electrical contacts connected thereto; and a mate assist system for assisting in mating the electrical connector to a mating electrical connector. The mate assist system includes a cam member movably mounted to the housing having a slot for receiving a cam portion of the mating electrical connector and a rack section with teeth engaging a user actuatable member movably mounted to the housing.

Abstract: An electrical connector has a connector body that is equipped with a cam lever that is pivotally attached to the connector body for movement between a transit position and a lock position. The electrical connector has a retainer to prevent detachment of the cam lever from the connector body during transit.