188results about How to "Reduce laps" patented technology

An intramedullary lengthening device includes a housing and a distraction shaft. The intramedullary lengthening device is placed within a cavity of two bone sections (either already separated or purposely separated for insertion of the device). The distraction shaft of the intramedullary lengthening device is attached to the one of the bone sections using, for example, one or more attachment screws. The housing of the intramedullary lengthening device is attached to the second bone section using, for instance, one or more attachment screws. Over the treatment period, the bone is continually distracted, creating a new separation into which osteogenesis can occur. In one embodiment, the intramedullary lengthening device includes an actuator and an extension rod, which can be attached to one other.

A stent may comprise a helically wound ribbon of material. The stent may comprise a plurality of ribbon turns about a longitudinal axis of the stent. Upon expansion of the stent, the diameter of the stent may increase and the number of ribbon turns may decrease. Upon expansion of the stent, the width of the ribbon may increase. The length of the stent may be the same in unexpanded and expanded states.

Disclosed herein is a transformer including: an iron core; and a winding wound around the iron core; wherein the iron core includes a column-shaped output side iron core part, a plurality of column-shaped input side iron core parts, and a connecting iron core part, the winding includes a plurality of primary windings, a secondary winding, and generated magnetic fluxes.

Disclosed herein is a wireless power transmission system, including a transmitting unit generating and transmitting power for charging a battery; a receiving unit receiving transmitted power and charging the battery with power; and a transmission control unit controlling a magnetic induction method and a magnetic resonance method to be selectively used according to a distance between the transmitting unit and the receiving unit when the transmitting unit transmits power.

In a time of flight mass spectrometer (TOF-MS) of the present invention, a flight controller makes ions fly a loop orbit a predetermined number of turns, and an ion detector detects the ions at each turn of the flight. A flight time measurer measures the length of flight time of ions of a same mass to charge ratio at every turn, and a data processor constructs a spectrum of flight time. The data processor further computes the Fourier transformation of the spectrum, and determines the mass to charge ratio of the ions based on a frequency peak appearing in the Fourier transformation.

A superconducting electrical machine has rotor and stator assemblies. A first rotor assembly is located to rotate within a stator assembly and is spaced from the stator assembly by an air gap. A second rotor assembly is located to rotate outside the stator assembly and is also spaced from the stator assembly by an air gap. The first and second rotor assemblies have at least one superconducting field winding. The superconducting field windings are formed from a High Temperature Superconducting (HTS) material such as BSCCO-2223 or YBCO, for example. The double rotor assembly configuration provides a new technical effect over conventional rotating superconducting machines having a single rotor assembly.

Male and female reduced thread coaxial connectors for interconnecting center and outer conductors of pairs of coaxial signal lines each has a rear tubular connector body section for attachment in electrically conductive contact to the outer conductor of a coaxial cable and a front cylindrically shaped body section which is in electrically conductive contact with the rear body section and protrudes axially forward therefrom. The front body section of the male reduced thread connector has a longitudinally disposed bore, the circumferential wall surface of which has in a rear portion thereof helical threads adapted to threadingly engage threads on an outer cylindrical surface of the front connector body section of a standard fully threaded female coaxial connector, and a front unthreaded portion which is adapted to insertably receive the front female connector body section and thereby guide the axes of the female and the male connectors into alignment prior to mutual contact of their threaded surfaces. The front body section of the reduced thread female connector has an outer cylindrical wall surface which has in a rear portion thereof helical threads adapted to threadingly engage helical threads of a standard fully threaded male connector, and a front unthreaded portion which is adapted to be inserted into the bore of the male connector body section and thereby guide the axes of the male and female connectors into axial alignment prior to mutual contact of their threaded surfaces.

A positive side main contactor serving as a contact switching device on the positive side, which is connected between a positive electrode terminal of a battery pack and a high potential input terminal of an inverter, and a negative side main contactor serving as a contact switching device on the negative side, which is connected between a negative electrode terminal of the battery pack and a low potential input terminal of the inverter, are arranged so that moving contacts of these are moved forward and backward in directions that are different from each other, e.g. by 90 degrees. Thus, a situation in which the two main contactors are simultaneously turned ON upon external impact can be avoided, and consequently, it is possible to achieve the same impact resistance as was previously possible with a smaller spring force than was previously required. Therefore, it is possible, for example, to reduce the number of turns of the winding in an electromagnetic coil of each of the main contactors or to reduce the winding diameter. The size and the cost of the contact switching device are reduced while maintaining reliability.

Techniques are provided for estimating left atrial pressure (LAP) or other cardiac performance parameters based on measured conduction delays. In particular, LAP is estimated based interventricular conduction delays. Predetermined conversion factors stored within the device are used to convert the various the conduction delays into LAP values or other appropriate cardiac performance parameters. The conversion factors may be, for example, slope and baseline values derived during an initial calibration procedure performed by an external system, such as an external programmer. In some examples, the slope and baseline values may be periodically re-calibrated by the implantable device itself. Techniques are also described for adaptively adjusting pacing parameters based on estimated LAP or other cardiac performance parameters. Still further, techniques are described for estimating conduction delays based on impedance or admittance values and for tracking heart failure therefrom.

The invention discloses a Lorentz force type magnetic bearing capable of realizing double permanent magnet deflection. The bearing comprises a rotor system and a stator system, wherein the rotor system mainly comprises an outer mounting sleeve, outer magnetic steel, an outer magnetism isolating ring, an outer upper magnetism conducting ring, an outer lower magnetism conducting ring, an outer lower magnetism conducting ring lock nut, a turntable, an outer assembly lock nut, an inner mounting sleeve, inner magnetic steel, an inner magnetism isolating ring, an inner upper magnetism conducting ring, an inner lower magnetism conducting ring, an inner lower magnetism conducting ring lock nut and an inner assembly lock nut; the stator system mainly comprises a stator framework, an aluminum substrate, a winding and epoxy resin glue. The magnetic steel axial magnetization scheme is adopted, the number of magnetic steel turns is reduced, the gap flux density fluctuation caused by uneven magnetomotive force of the magnetic steel is reduced, the paramagnetic effect is realized by the aid of the magnetism conducting rings, the gap flux density fluctuation caused by assembly of the outer magnetic steel and the inner magnetic steel is further reduced, and high-precision deflection control torque can be realized. Besides, a magnetism conducting material is used as a magnetic pole material, precision machining of a magnetic pole surface is facilitated, and requirements for size precision and surface roughness of the magnetic steel are reduced.

The invention relates to an active electric power-assisting circulation ball type steering system, comprising a steering column tube assembly, a screw rod moving device, a circulation ball type steering device, an electric power-assisting device and an automatic control module. A steering column tube is connected with the upper part of a screw rod of the circulation ball type steering device through a sliding spline, and the electric power-assisting device is connected with the lower part of the screw rod through a sliding spline; the screw rod moving device is sleeved on the screw rod; the screw rod has two motion freedoms; a freedom of rotating around the axis is controlled by a steering wheel; and the other freedom of moving along the axis is controlled by a screw rod moving control motor; a steering nut is moved by overlapping the effects of rotation and axial movement of the screw rod, so that a transmission ratio of the steering system is changed in real time, and the active steering is intervened. The steering system not only can meet the requirements on lightness and high sensitivity at a low-speed steering process and on stable operation at a high-speed steering process, but also has the characteristics of security, compact structure, low cost and the like. The active electric power-assisting circulation ball type steering system is applicable to a medium / light passenger bus and a lorry.

An insulating bobbin for disposition between a stator core and a stator winding of a stator of a rotating machine, the stator winding being wound around the stator core by way of the insulating bobbin, the insulating bobbin comprising a coil end section at which an end portion of the stator winding is disposed, a slot side section forming a slot for winding thereon the stator winding, and a corner section having a curved surface and connecting between the coil end portion and the slot side portion, the corner section having a first radius of curvature at a side closer to the coil end section and a second radius of curvature at a side closer to the slot side section, the second radius of curvature being larger than the first radius of curvature.

The invention relates to a high-power, high-frequency and high-voltage rectifier transformer, which comprises a core, a plurality of low-voltage windings, a plurality of high-voltage windings, a plurality of rectifier bridges and a transformer oil tank. The core adopts a rectangular ultra-crystalline transformer core, the low-voltage windings are divided into two groups by wide copper foil and are wound on two low-voltage skeletons on the long side column of the core along the same direction, half of the high-voltage windings are sequentially wound on one high-voltage coil skeleton, the otherhalf of the high-voltage windings are sequentially wound on another one high-voltage coil skeleton, the two high-voltage coil skeletons are respectively sleeved on the two low-voltage windings, and the high-voltage windings are respectively connected with the input ends of the matching rectifier bridges. The problem of damage to a high-frequency power supply switch, caused by reflection of distributed capacitance of the secondary winding of the transformer, can be solved, the working frequency can reach 10-50kHz, the rated voltage of direct-current output is 72kv, and the rated output power is no lower than 100kW. The temperature rise in full-load continuous operation is less than 40 DEG C. Therefore, the high-power, high-frequency and high-voltage rectifier transformer is an ideal booster device for a high-voltage power supply of a large electrostatic precipitator.

The invention discloses a motor-driven power-assisted steering system with a duly-variable transmission ratio and a control method thereof, belonging to a motor-driven power-assisted steering system. The system comprises a steering wheel (1), a torque sensor (2), a steering motor (3), a planet gear (4), a sun gear (5), a gear ring (6), a steering tubular column (38), a power-assisted motor (7), a retarding mechanism (8), a rack (9), a steering rocker arm (10), a front wheel (11), an electronic control unit ECU (12), an advanced electronic control module ECUa (27), a vehicle-mounted satellite navigator (28), a vehicle-mounted foresight road condition instrument (29) and a self-adaption memory electronic control module ECUb (30). Because a planetary gear mechanism, a steering synchronizing clutch and a steering motor are added between the torque sensor and the gear rack, the motor-driven power-assisted steering system can realize the functions of steering mode selection, duly self-adaption variable transmission ratio control and active steering intervention on the basis of finishing the original motor-driven power-assisted steering; the steering stability and the travelling safety of the automobile can be improved; and the safety and the flexibility of the automobile can be perfectly combined.

An electrical connector arrangement includes a socket having a central body portion supporting a plurality of female contacts, and a tubular outer portion extending in concentric spaced relation about the body portion to define a groove. A plug component having a cylindrical body portion including a plurality of male contacts includes a tubular end portion that extends axially within the groove to connect the male and female contacts, respectively. A fastening sleeve is rotatably mounted on the plug between the outer surface thereof and the socket outer portion, whereby external screw threads on the sleeve engage internal threads on the socket tubular portion, thereby to fasten together the plug and socket components. In order to reduce the assembly time, the number and length of the screw threads on one of the sleeve and socket components is less than the number and length of the screw threads of the other component.

The invention relates to a pulse starting device and a starting method for a discharge lamp, in particular a high-pressure discharge lamp for a motor vehicle headlamp. The starting device has a transformer which has either two primary windings which are connected in parallel and are both coupled inductively to the at least one secondary winding, or instead has a primary winding which consists of a wide metal strip and is wound, separated by an electric insulation, over the at least one secondary winding. The starting device according to the invention has a compact design which permits the complete starting device to be accommodated in the lamp cap.

A heating system for preheating a fluid. The heating system comprises a heating unit with a heating flow path; wherein the heating unit is adapted to be operated at a first temperature and to provide a heat transfer between the heating unit and the fluid passing through the heating flow path, with the heat transfer not being sufficient for heating up the fluid passing through the heating flow path to the first temperature.

The invention relates to an SMD power inductor, which comprises a magnetizer and an enamelled wire coil, wherein the coil comprises a main body and an extension part; the magnetizer and the coil are integrated into an integral structure; a material for preparing the magnetizer is tightly filled in the main body and is tightly coated outside the main body; the extension part extends out of the magnetizer to form an electrode of the inductor; and an electrode tip attached to the magnetizer is welded on the electrode. The invention also relates to a method for manufacturing the SMD power inductor, which comprises the following steps: preparing the coil and powder for preparing the magnetizer; diecasting the coil and the powder; and welding the electrode tip on the electrode of the coil. The SMD power inductor and the manufacturing method thereof have the advantages of good electric property of the inductor, high production efficiency and good consistency of product performance.

The invention relates to a detector-grade high-purity germanium polycrystal preparation process and special equipment thereof. The process comprises two parts of cleanness of a raw material germanium ingot and zone-melting equipment and zone-melting purification. The special equipment comprises a base, a trolley track, a trolley, a quartz pipe and a quartz pipe bracket, wherein the raw material germanium ingot is arranged in the quartz pipe; a high-frequency heating coil is fixed to the trolley; and the high-frequency heating coil is a double-layer coil with the width of 1-3cm and surrounds outside the quartz pipe. The reactant and the zone-melting equipment in the invention are both subjected to strict physical and chemical cleaning, the purity of cleaning liquid is high, the reaction process is always carried out in an ultraclean working platform, and the purity requirement on the reactant and the reaction environment is high, so that a precondition is provided for manufacturing high-purity products; a narrow melting zone structure is adopted in the zone-melting process and moves to heat for zone-melting so that the heat quantity is concentrated, the dephlegmation effect of impurities in the zone-melting process is greatly improved, and the purifying efficiency is improved; and the product purity is further improved through repeated zone melting.

A concentrated winding stator coil of a proximal end extraction type two-layer winding arrangement includes numerous tooth coils which are connected in series to arrange serial coil units and also connected in parallel as pairs arranging respective phase windings. Plural inter-coil bus bars are provided to connect the tooth coils of the serial coil units. Plural terminal bus bars extend from both ends of the serial coil units to connect respective serial coil units in parallel with each other. These bus bars are disposed adjacently to an end face of a core back.

An ignition apparatus includes a cylindrical core made from magnetically-permeable material and a C-shaped magnetic return path structure that is made from a stack of silicon steel laminations. A tightly controlled air gap is provided between one leg of the C-shaped structure and an end face of the core, forming a magnetic circuit having a high magnetic permeability, which overall reduces the number of primary winding turns needed, thereby reducing the amount of copper wire. In addition, the circular cross-section of the core reduces the mean length per turn (MLT) of the primary winding because the primary winding can be wound directly on the core, which in turn also reduces the MLT of the secondary winding. The reduced MLT also reduces the amount of copper wire. The structure may be replaced using a magnetically-permeable, U-shaped shield.

A plurality of layers of flat coils are stacked and connected in series with each other to form a single coil pole, and the coil pole is energized by an A.C. signal. Magnetism-responsive member, provided to be opposed to the coil pole in a non-contact manner, is displaced relative to the coil pole, so that correspondency, to the coil section, of the magnetism-responsive member varies in response to variation in the relative position and thus impedance variation occurs in the coil pole. Position detection signal is provided on the basis of an output signal, responsive to the impedance variation, taken out from the coil pole.

A rotor of alternator has core layer units serially located along axial direction. Each unit has a field coil generating magnetic flux and two rotor cores receiving the flux on respective sides of the coil in axial direction. Each core has a first yoke portion located on inner side of the coil, a second yoke portion extending from the first yoke portion toward the outer side and magnetic poles extending from the second yoke portion in the axial direction. The poles of one core and the poles of the other core in each unit extend toward different axial sides and are alternately arranged in circumferential direction on the outer side of the coil. A ratio of the outer circumferential diameter of the first yoke portions to the rotational diameter of the poles is lower than 0.54.

The invention discloses a device and a method for centering a wind power generator spindle and a gearbox shaft expansion sleeve. The device comprises a wind power generator spindle support, a gearbox support and a tension machine, the wind power generator spindle support comprises a base and a floating rack in up-down arrangement, the floating rack comprises a mounting seat on an upper layer and a floating seat on a lower layer, a horizontal roller set supporting a wind power generator spindle assembly is mounted on the mounting seat and brings convenience to the wind power generator spindle to horizontally move, and a spring support between the base and the floating seat enables the wind power generator spindle assembly and the floating rack to be in a floating state in the vertical direction. The device and the method for centering the wind power generator spindle and the gearbox shaft expansion sleeve are high in centering accuracy, simple to operate and few in needed personnel.

The disclosure relates to a Hall-effect ion ejection device that comprises a longitudinal axis substantially parallel to the ion ejection direction, and comprises at least: a main ionization and acceleration annular channel, the annular channel being open at its end; an anode extending inside the channel; a cathode extending outside the channel at the outlet thereof; a magnetic circuit for generating a magnetic field in a portion of the annular channel, said circuit including at least an annular inner wall, an annular outer wall and a bottom connecting the inner and outer annular walls and defining the downstream portion of the magnetic circuit; characterised in that the magnetic circuit is arranged so as to create at the outlet of the annular channel a magnetic field independent from the azimuth.