Abstract: The invention relates to a method for producing thin glass panes, especially glass panes with a thickness of below 1 mm, by drawing a thin glass strand vertically downwards. According to the inventive method, a glass melt is fed from a melting bath via a feed to the glass drawing tank that comprises a nozzle system with at least one slotted nozzle. The length and the diameter of the feed as well as the viscosity of the glass melt present in the feed determine the overall throughput. The throughput per length unit in the transverse direction to the glass strand (so-called line throughput) is adjusted via the geometry of the nozzle system and via the viscosity of the glass melt present in the nozzle system. These parameters are adjusted in such a manner that the glass, when leaving the nozzle system, does not wet the bottom of the slotted nozzle in the range of the tearoff edge.

Abstract: An apparatus is proposed for manufacturing a syringe, which has a syringe body composed of glass and a hollow needle, for medical purposes, and is characterized by a laser beam generating device (3) having a laser generator (5) for producing a laser beam (9), a beam forming and/or guidance device (7), and by a holding device (17) for holding and positioning the syringe body (13).

Abstract: In the case of a method for producing an optical element with at least one curved surface by spherical separation, a spherical-cap-like separating body with cutting elements is used. The separating body is in this case moved in a pivoting movement through a basic body or the basic body is moved through the separating body, a relative rotational movement taking place between the basic body and the separating body with a rotating axis which passes through the center point (M) of the pivoting movement.

Abstract: The present invention provides a simple method for fabricating fiber-optic glass preforms having complex refractive index configurations and/or dopant distributions in a radial direction with a high degree of accuracy and precision. The method teaches bundling together a plurality of glass rods of specific physical, chemical, or optical properties and wherein the rod bundle is fused in a manner that maintains the cross-sectional composition and refractive-index profiles established by the position of the rods.

Abstract: Apparatus and methods are provided for reducing end effect on a preform assembly during manufacture of optical fiber. The present invention provides apparatus and methods that apply a first vacuum pressure to a preform assembly during a first portion of the draw of optical fiber from the preform assembly and a second lesser vacuum pressure during a second portion of the draw. The second vacuum pressure may be a step down pressure or a gradual or an incremental decrease in pressure over time. The present invention further provides apparatus and methods that use an intermediate rod such as a dummy preform core rod and/or a support rod placed at the back of the preform core rod, wherein the preform end effect occurs on the dummy preform core rod, as opposed to the core rod of the preform assembly or is eliminated altogether by the support rod.

Abstract: A multi-tube burner is provided which includes a cylindrical outermost nozzle and at least one cylindrical inner nozzle provided coaxially with the outermost nozzle to form annular jet openings for gases used to manufacture a glass preform. The angle between a center axis of an outer circumference of the outermost nozzle and a distal end portion of each of the inner nozzles is 90°± not more than 3°. Furthermore, the distance between the center axis of the outer circumference of the outermost nozzle and each of center axes of inner circumferences and outer circumferences of the inner nozzles is not more than 0.20 mm.

Abstract: The invention relates to a method for producing a silica glass tube which is characterized by depositing SiO2 particles on an elongate support that rotates about its longitudinal axis, thereby producing a porous with a cylindrical inner bore. Said blank is vertically aligned, suspended in a furnace using a suspension that engages with a constriction in the upper zone of the inner bore of the blank, and vitrified. The aim of the invention is to provided a method with which also heavy blanks can be secured safely and substantially without any danger of contaminations of the inner bore without using complicated securing devices. To this end, the constriction (6b) is generated by shaping the inner bore (7) when the SiO2 particles are deposited. For vitrification a suspension (8; 9; 10) is used that supports itself on the constriction (6b) and that otherwise projects into the cylindrical inner bore (7) without having any contact therewith.

Abstract: A bushing temperature controller includes a transformer 3 which supplies a main current 11 to the bushing 2 for accommodating molten glass, and regulation current supply units 7 and 8 which are adapted to supply regulation currents I2 and I3 either in phase with the main current I1 or in phase inverted to the main current I1 to a portion of a region to which the transformer 3 applies the current. Thus, the temperature control of partial regions 2a and 2c in the region to which the current is applied can be performed in a wide temperature range.

Abstract: A knitting method of joining together adjacent fabrics (3, 5), which are arranged side by side and knitted in a tubular form, at ends thereof on the sides adjacent to each other by using a flat knitting machine so that the joining portion of knitwear, such as a side part of sweater or at a crotch of pants, is prevented from being holed and is also increased in pull strength. The knitting progresses from one of the tubular knitted fabrics (3) to the other tubular knitted fabric (5) to join together the tubular fabrics, during which a yarn is fed to needles holding loops formed one stitch backward with respect to a join processing direction to provide a tubular knitting for the needles, followed by shifting the yarn to needles holding loops formed two stitches forward with respect to the join processing direction, to provide the same tubular knitting as above for the needles, the knitting steps being repeatedly performed.

Abstract: A method for fabricating a garment comprising the steps of knitting a tubular preformer having at least one band of edging material circumferentially and integrally knitted therewith, and continuing knitting the knitted tubular preformer to fabricate a knitted fabric section from which a garment body section having apertures may be cut, then cutting the band of edging material and the garment body section having at least one aperture from the preformer, and attaching the band of edging material to the garment body section around the perimeter of the aperture.

Abstract: The present invention provides a dry-cleaning machine capable of performing a water-repellent finishing process when necessary, while ensuring a high level of safety. When the water-repellent finishing process has been performed after the drying process (Step S2), the solvent contained in the water repellent penetrates into the laundry articles. Taking this into account, the upper limit for the temperature difference ?T between the inlet and outlet of the drum detected is set lower (e.g. 10° C.) than that the upper limit (e.g. 20° C.) applied to the case where no water-repellent finishing process is performed. This temperature setting reduces the amount of heat supplied to the laundry articles and accordingly decreases the evaporating speed of the solvent. Thus, the concentration of the gasified solvent in the air-circulating passage is maintained under the safety level.

Abstract: A locking device includes a receiving portion adapted to connect to a secondary object and having a receiving space, a limiting portion securely connected to the receiving portion, a bolt movably received in the receiving portion; and a cable selectively extending through the limiting hole to limit movement of the bolt such that the connection of the receiving portion to the secondary object is secured.

Abstract: An economical and effective process is provided to remove water from organic waste material, such as manure, and to further facilitate various different fertilizer applications or uses for the product material produced. The process employ a pulverizing air drier that utilizes a high impact vortex or cyclone of forced air. Additionally, the process sanitizes and the raw organic material and “micronizes” the organic material as well as or better than conventional thermal drying, which must be coupled with supplemental grinding or pulverizing techniques. To help preserve the nutritive, water soluble components of the raw organic material, the material is acidified prior to drying. To further minimize the loss of nutrients in the product fertilizer, water soluble components removed by the drying process can be recovered recycled back into the product. Additional nutritive component can be added to the material to produce a desired fertilizer formulation.

Abstract: An apparatus for correcting the circumferential length of a metal ring has a drive roller 2 and a driven roller 3 positionable closely to each other for training a metal ring W therearound, and a correcting roller 4 disposed between the drive roller 2 and the driven roller 3. The apparatus also has a first displacement applying unit for displacing the drive roller 2 and the driven roller 3 away from each other when the metal ring W is trained around the drive roller 2, the driven roller 3, and the correcting roller 4.

Abstract: The invention relates to a method and a flow-forming machine for inserting a groove in a cylindrical, thin workpiece. The workpiece is rotated relative to at least one spinning roller. The spinning roller is provided with a profile corresponding to the groove to be shaped. The spinning roller is radially infed to the workpiece and the groove is shaped. A particularly precise forming of the groove is brought about in that simultaneously with the radial infeeding of the spinning roller and the shaping of the groove, the workpiece is axially upset by means of at least one punch.

Abstract: The slide motions of tools mounted on tool units (400A, 400B, 400C) are realized by a single ring gear (10) serving as a common driving force for all the tool units and arranged on a forming table (200), and cam shaft blocks (20) for transmitting the rotation force of the ring gear (10) to the tool units (400A, 400B, 400C). The cam shaft blocks (20) are formed separately from the tool units (400A, 400B, 400C). The angles of arrangement of the cam shaft blocks (20) on the forming table (200) can be changed independently of the tool units (400A, 400B, 400C).

Abstract: A bending assembly on a bending machine for the bending of rod and/or bar-shaped workpieces and especially pipes (8) includes a bending tool (10) and a bending drive unit (11). The bending drive unit (11) includes a swivel arm (21) and a bending-drive motor (22), the bending tool (10) is equipped with at least one workpiece thrust block (12, 13), and the swivel arm (21) has at least one thrust pad (17, 18). By means of the bending-drive motor (22) the swivel arm (21) with the thrust pad (17, 18) can be rotated around a bending axis (14) that extends in the transverse direction of the workpiece. The workpiece can be bent when the thrust pad (17, 18) forces it against and around the associated workpiece thrust block (12, 13). The motor shaft of the bending drive motor (22) extends parallel to the bending axis (14), and both of its shaft ends are drive-connected to the swivel arm (21).

Abstract: A drive assembly for a dual coacting roller machine having a driven sprocket mounted onto a first roller shaft, a drive sprocket mounted onto a second roller shaft, and a pair of idler sprockets connected by a belt to the driven sprocket and drive sprocket, wherein one of the idler sprockets is mounted onto a mounting bracket connected to the driven sprocket, such that repositioning of the driven sprocket relative to the drive sprocket produces a corresponding repositioning of the mounting bracket and idler sprocket, such that the tension on the belt remains essentially the same.

Abstract: A method of producing a seamless steel tube to enable it to suppress not only the deviations in wall thickness occurring in the direction of reduction in a mandrel mill but also the derivations in thickness occurring at places deviating from the direction of reduction:

Abstract: A method for draw forming a desired contour to the outer diameter of a tubular workpiece provides that the selected workpiece have a wall thickness uniform throughout its length or a combination of uniform thicknesses at end portions with a mid portion of a tapering wall thickness. The outer diameter of selected workpiece is reduced along essentially only a part of the starting tubular metal blank by drawing the metal blank only partly through a contoured die or only partly through each one of a succession of contoured dies.

Abstract: An expandable forming tool has a body with a mounting stem on its upper surface and a transversely extending channel in its lower surface in which is slidably seated a wedge-shaped actuator for vertical sliding movement. The larger lower end normally depends from the body. A pair of slides are slidably seated in the channel on opposite sides of the actuator, and they have angular surfaces slidably bearing on the sloping surfaces of the actuator. Springs bias the slides against the side surfaces of the actuator, and a spring biases the actuator outwardly of the body. The actuator is driven vertically inwardly of the channel by movement of its larger end against a workpiece, and this inward movement pushes the slide members outwardly in the channel to project beyond the periphery of the body.

Abstract: An expandable forming tool has a body with a mounting stem on its upper surface and a transversely extending channel in its lower surface in which is slidably seated a wedge-shaped actuator for vertical sliding movement. The larger lower end normally depends from the body. A pair of slides are slidably seated in the channel on opposite sides of the actuator, and they have angular surfaces slidably bearing on the sloping surfaces of the actuator. Springs bias the slides against the side surfaces of the actuator, and a spring biases the actuator outwardly of the body. The actuator is driven vertically inwardly of the channel by movement of its larger end against a workpiece, and this inward movement pushes the slide members outwardly in the channel to project beyond the periphery of the body. The tool can produce contours in the workpiece, or cut the workpiece, or both.

Abstract: The present invention relates to a press of pressure cell type and a method for manufacturing a press body part. The press body part comprises a number of plate-shaped lamellar means having the planes of the plates oriented parallel to the planes of the plates of the adjacent lamellar means. Each lamellar means has a through hole which has the same centre axis as the hole of the adjacent lamellar means. Prestressing means which induce a compressing prestress acting in the planes of the plates are arranged on an external edge surface of the main part of the lamellar means. The invention also relates to a lamellar means of a press body part.

Abstract: The present invention relates to a press of pressure cell type and a tray for use in a press of pressure cell type. The tray which defines a space for arranging a forming tool and/or a workpiece has prestressing means arranged on the external surface of the tray. The prestressing means induce a compressing prestress which acts in planes parallel to the plane of the tray.

Abstract: A gas-concentration measuring apparatus for measuring the concentration variation of gas residing in a target region The gas-concentration measuring apparatus comprises an ultrasound-transmitter adapted to transmit an ultrasound in response to an ultrasound-generating signal having a rate of voltage change equal to or greater than a slew rate of an operational amplifier, and further adapted to output the ultrasound-generating signal. An ultrasound-receiver adapted to receive the ultrasound passed through the gas residing in the target region, and further adapted to convert the received ultrasound into an electrical signal serving as a received ultrasound signal is provided. A gas-concentration determiner adapted to input the ultrasound-generating signal and the received ultrasound signal into the operational amplifier to generate an amplified transmitting-side chopping wave and an amplified receiving-side chopping wave is further provided.

Abstract: A gas detection sensor which combines the advantages of constant-temperature operation and PWM control for catalytic-bead, combustible-gas detectors. The active and reference elements of the gas detector are arranged in a modified bridge circuit which allows power to be supplied, using pulse-width modulation, separately to the active and reference elements. An advantage is that constant temperature can be maintained on the elements by using a relatively inexpensive digital processor to monitor the resistances of the elements to control the pulse-width modulator, and to translate the decrease in power needed to maintain constant temperature on the catalytic element into an output proportional to the concentration of combustible gas in air. Thus, a system embodying the foregoing periodically measures the resistance of one or more sensor elements (Rref and Rsense) and controls the electrical bias applied to the elements, using PWM, thereby maintaining nearly constant temperatures in the sensor elements.

Abstract: Sidestream gas sampling assembly that does not substantially degrade the waveform of expired gases. The gas sampling assembly includes a sample cell portion integrated with a filter portion for separating undesired liquid condensate from respiratory gases to be monitored. The gas sampling assembly is configured to receive expired gases through a gas sampling line, filter undesired liquid condensate from the expired gases through hydrophobic fiber elements and communicate the filtered gases to a sample chamber which is in close proximity to the filter where measurements may be taken thereof e.g., optical or infrared sensing mechanisms. The gases that are substantially free of liquid condensate are then exhausted from the sample chamber.

Abstract: A flow testing system and method are provided for facilitating the continuous flow testing of fluid flow systems and components. An exemplary flow testing system and method are suitably configured for direct implementation into the manufacturing processes for fluid flow systems and components or for stand-alone operation, and can facilitate increased flow testing throughput. An exemplary flow testing system comprises a flow amplifier subsystem, a piping subsystem, a venturi subsystem, and an output coupling subsystem. The flow amplifier subsystem is configured for coupling to an ambient air source, while the output coupling subsystem is configured for coupling to a fluid flow component for testing.

Abstract: An apparatus and method for determining the density and fluid-type of a fluid flowing in a capillary tube, the velocity and viscosity of a blood sample flowing in a capillary tube, the erythrocyte sedimentation rate (ESR) of a blood sample after flow has been brought to an abrupt stop in a capillary tube, and/or the zeta sedimentation rate (ZSR) of a blood sample after flow has been brought to an abrupt stop in a capillary tube. These measurements are accomplished by directing a waveform pulse, such as an ultrasound pulse, at a pre-determined frequency transversely across the capillary tube and sample fluid, and by determining the flight of time of the pulse through the capillary tube and sample fluid and/or the Doppler shift of the echo signals reflecting off cells moving forwardly or transversely within a flowing, or stationary, blood sample.

Abstract: A fuel pump module is formed in such a manner that a sensor unit having a semiconductor diaphragm is provided in a recess of a bracket having a flange portion holding a fuel pump through a high-pressure filter. The recess is closed by a sensor cap having a lead-in pipe to thereby form an tank internal-pressure sensor. While internal pressure of a fuel tank is led into the tank internal-pressure sensor through an internal pressure lead-in pipe, atmospheric pressure is led into the tank internal-pressure sensor through an external air intake hole provided in the lead-in pipe. Thus, internal pressure of the fuel tank is detected.

Abstract: A method of forecasting the comfort performance (noise and vibrations) in a vehicle equipped with a test mounted assembly in a selected position, the said vehicle travelling at a given speed V on a travel medium of the smooth ground type, allowing an equivalent maximum speed Vmax of the vehicle to be attained (Vmax being greater than the given speed V), this method consisting in establishing an overall transfer function of the vehicle equipped in the same position with a reference mounted assembly comprising a tire and its mounting wheel, the said tire having N irregularities which are substantially identical and regularly distributed over the circumference of the assembly, these irregularities being selected to excite the vehicle in a range of frequencies from a minimum frequency Fmin to a maximum frequency Fmax in the course of travel over smooth ground.

Abstract: A method and apparatus are presented for determining turbulent boundary layer thickness. In this method and apparatus, a pair of sensors are mounted to a solid surface interfacing with a fluid at two separate stream wise locations. A voltage output from the pair of sensors is recorded and a real non-dimensional value of a correlation coefficient is computed with measured data from the recorded voltage. A laboratory non-dimensional value of the correlation coefficient is independently determined from laboratory data. The real non-dimensional value is compared with the laboratory non-dimensional value to obtain a boundary layer thickness having a value which minimizes a difference between the values of the real non-dimensional value and the laboratory non-dimensional value.

Abstract: A fuel pump module is liquid-tightly mounted in an opening of a vehicle fuel tank. The fuel pump module includes a residual fuel detector provided near the fuel tank. The residual fuel detector includes a diaphragm having a first diaphragm for receiving fuel pressure Pg by a head and atmospheric pressure Po, and a diaphragm portion for receiving atmospheric pressure Po and internal pressure Pi. The residual fuel detector detects the amount of fuel remaining in the fuel tank on the basis of these kinds of pressure Po, Pg and Pi. At the same time, the residual fuel detector detects the in-tank pressure Pt of the fuel tank on the basis of Po and Pi.

Abstract: A vertical series of electrical heat sensors adhered to the outer surface of a water heater tank. The sensors are electrically connected to a corresponding vertical series of display lights in reverse order. Heated water fills the tank from the top down. The sensors are activated from the top down based on the amount of hot water in the tank. The lights are correspondingly activated from the bottom up, showing the tank “filling-up” with hot water. The lights can be labeled such as “Full”, “Half Full”, etc. The sensors can be provided in sequence on a rod with magnets. Thus, the rod can be quickly attached to the tank, holding the sensors in a vertical line in the correct order. Displays can be remote from the tank via wiring or radio signaling, allowing them to be mounted in each bathroom or elsewhere.

Abstract: Balancing machine comprising a shell or frame (3) suspension-mounted on a bed (2) via elastic supports, a shaft (8) rotatably supported by said frame at two points spaced a predetermined distance apart and having that end emerging from the bed provided with means (80) for locking a wheel (11), drive means for rotating said shaft, and force transducer means (33) applied between the bed and the shaft, characterised in that the drive means are rigid with the suspension-mounted frame, between the bed (2) and frame (3) there being interposed an elastic support comprising at least two coplanar leaf springs (4, 5) symmetrical about the shaft axis and positioned in a plane perpendicular to the plane containing the axes of said drive means, of said shaft and of said transducer means.

Abstract: The locking and drive unit comprises, for supporting the rotating body (10) and rotating it about an axis A, a motorized main shaft (20) carrying flange means which define a counteracting surface (26) for the rotating body; and pressing means (31, 32) coaxial with the shaft (20) to axially press the rotating body (10) against said counteracting surface (26) and to lock it relative thereto; a traction rod (40) is associated with the main shaft (20), is movable axially relative thereto and is connected to the pressing means (31, 32) to pull them against the counteracting surface (26). Elastic thrust means (45) are connected to the traction rod (40) to axially pull, via this latter, the pressing means (31, 32) against the counteracting surface (26) to lock the rotating body relative thereto.

Abstract: An inertial sensor includes a plurality of sense elements disposed upon a silicon wafer. Each of the sense elements senses a different inertia range. The sense elements are electrically connected to a common signal conditioning circuit that generates an output signal for each of the sense elements. The signal conditioning circuit has an output that is electrically connected to at least one control system and provides output signals in different ranges to the control system.

Abstract: A system and method is used for estimating the properties of a flexural beam. The beam is shaken transverse to its longitudinal axis. Seven frequency domain transfer functions of displacement are measured at spaced apart locations along the beam. The seven transfer functions are combined to yield closed form values of the flexural wavenumber in propagation coefficients at any test frequency.

Abstract: A pressure differential measuring tool which includes a wafer container having a pressure difference meter provided in fluid communication therewith. In use, the wafer container is placed in the indexer of the process tool, which is operated according to normal operational parameters. The pressure difference meter measures the difference in pressure between the air in the indexer, which equalizes with pressure in the wafer container, and the ambient or atmospheric air surrounding the chamber, which equalizes with the pressure of the air in the process chamber. The air pressure in the indexer can then be adjusted to a value higher than the ambient or atmospheric air pressure to prevent influx of air and particles from the process chamber into the indexer and wafer container.

Abstract: A load indicating member is provided with a permanent identifying mark which can be read and used to determine ultrasonic measurement parameters specific to the load indicating member to provide more precise and more reliable load measurements by compensating for differences resulting from manufacturing variations in individual load indicating members. The parameters specific to the load indicating member can be stored in coding applied to the load indicating member or in a database that can be accessed remotely, for example, using the Internet.

Abstract: An panel testing apparatus is used to test the panel of a mainframe. When the panel is to be opened, the panel separates from the mainframe after the opening apparatus touches the switch. The fastening apparatus can clamp the front side of the panel easily because the lifting apparatus moves the panel to a higher position away from said mainframe. The panel and the rotating apparatus can rotate simultaneously. When closing said panel is desired, the rotating apparatus can push the back side of the panel. The panel and the rotating apparatus rotate toward the mainframe simultaneously until the switch locks the mainframe.

Abstract: A magnetostrictive strain sensor includes a Hall effect sensor for measuring the change in magnetic flux a magnetic circuit including a magnetostrictive element. A strain sensing apparatus includes one or more magnetic elements defining a magnetic circuit having a gap, and including a magnetostrictive element adapted to receive a load force. A Hall effect sensor is disposed within the gap for sensing a change in magnetic flux in the magnetic circuit. The Hall effect sensor may include a programmable circuit for zeroing and calibrating the sensing apparatus, and for providing temperature compensation. The magnetostrictive element may be magnetized to form the magnetized element, and may be formed from material known as TERFENOL-D.

Abstract: The present invention is directed to a flow through pipet for sample measurement. The pipet of the invention has a body defining an interior space for receiving a fluid. The drain line is provided to drain fluid above a drain line inlet, thereby establishing a repeatable upper fluid level in the body. A dispense valve on the lower end of the body selectively permit dispensing of the fluid from the body. A restriction member may be located in the interior space of the body for defining a passageway. The drain line inlet may communicate with the passageway to establish a smaller surface area for an upper surface of the fluid, thereby minimizing a variance in the fluid level. A vent line vents gas from the measuring chamber during filling of a fluid. The pipet of the invention is particularly suitable for use in an automated system due to the top fill feature, which eliminates the need for cycling back and forth between a fill vessel and a dispense vessel.

Abstract: For measuring the concentration of a substance in body fluid, such as the glucose level in blood or tissue, a strip electrode (18) and a ring electrode (19) are arranged at the specimen. The ring electrode (19) is in direct electrical contact with the specimen while the strip electrode (18) is electrically insulated therefrom. The strip electrode (18) is arranged parallel to an arm or a leg for obtaining a large interaction length. The electrodes (18, 19) form a capacitor in a resonant circuit. A modulated voltage in the MHz range close to or at the resonance frequency is applied to the electrodes and the response of the body fluid is measured. This design allows a measurement of high accuracy.

Abstract: An impactor inlet for a system for monitoring an aerosol including a plurality of particles is provided. Each of the particles has a size. The inlet includes a housing defining a chamber to receive and direct a flow of the aerosol. A high flow rate nozzle receives the aerosol at a flow rate of greater than 20 liters per minute (lpm) and accelerates and directs the aerosol flow toward a impaction plate. The aerosol flow separates into a minor flow including particles having a size greater than about 10 um, and a major flow including the remaining particles. The minor flow impacts on the impaction plate, and the major flow is emitted from an outlet.

Abstract: The invention provides a method and an apparatus for measuring the size, concentration and size distribution of particles in a fluid by determining the characteristics of an acoustic speckle signal of the particles and relating these characteristics to the size and concentration characteristics of the particles. The method and the apparatus are especially useful for the measurement of the size distribution of small particles in optically opaque liquids.

Abstract: An improved structure for a starter (driver) of a miniaturized remote control model car engine is able to perform perfect separation of the starter shaft from the engine as soon as the engine has built up its normal speed with the aid of the slanted surface and chamfered edges formed on its coupling plate, and the retrieved starter shaft never forwardly excurses to recontact the engine shaft by elaborately designed steel ball positioning means. With this structure, the extra mechanical loss and damage to the mechanical parts can be prevented, that makes the present invention applicable to those model car engines operated at an extra high speed.

Abstract: An electric actuator comprises a rotary driving source, a timing belt which is circled or orbited under the driving action of the rotary driving source, a slider which is displaced by the timing belt in the axial direction, and a belt-adjusting mechanism which is connected to a side surface of the slider. Both ends of the timing belt are connected to the belt-adjusting mechanism respectively. The tension of the timing belt is adjusted by rotating an adjusting screw of the belt-adjusting mechanism.

Abstract: In order to achieve low cost, small size, and light weight, to improve response at the time of transmission of power, and to prevent the occurrence of unusual noise, a power transmission device (10) of an electric power steering device (1) has a motor section (5) comprising a rotational shaft (7), a rotor (51) attached to an inner end side (7a) of the rotational shaft (7), and a stator (52) positioned opposite to the rotor (51), a worm gear (61) attached to a distal end side (7b) from the motor section (5) on the rotational shaft (7), and a worm wheel gear (62) engaged with the gear (61). The rotational shaft (7) is rotatably supported by first and second bearings (81, 82), the first bearing (81) being held by a housing (4) at a distal end side (7b) to the worm gear (61). The second bearing (82) is held by the housing (4) between the worm gear (61) and the rotor (51) so that the worm gear (61) is sandwiched between the first and second bearings (81, 82).

Abstract: A gear wheel includes multiple helical toothings, each having a different helical angle. A pressing method for molding a gear wheel involves introducing a compactable material into a chamber of a pressing tool, compacting the material, exposing the helical toothings of the gear wheel, and removing the molded body from the pressing tool. A pressing tool for pressing, as one part, a gear wheel, includes a matrix, cylindrical first and second molding tool parts which can be translated along and then rotated about a longitudinal axis, and a driver coupled to the molding tool parts or driving them. The molding tool parts can be moved towards and away from each other and the inner surface of the matrix delimits the chamber and is shaped to allow a linear axial sliding movement of the compactable material relative to the matrix.