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1567results about How to "Shorten the axial length" patented technology
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Surgical instrument with elastically movable instrument head
ActiveUS8876858B2More working spaceSufficient torqueSurgical instruments for heatingSurgical forcepsEngineeringSurgical device
Disclosed is a surgical instrument comprising an instrument handle, an instrument shaft shaft having a distal end and a proximal end at which the instrument handle is linked, an instrument head, pivotally linked to the distal end of the instrument shaft via a hinge shaft or pins and comprising an effector rotatably supported in said instrument head around its longitudinal axis as well as a surgical tool held by said effector, and a mechanical transmission system at least partially arranged within said instrument shaft transmitting mechanical operation signals from said instrument handle to said instrument head at least for pivoting and / or rotating motions. A bending flexible as well as rotating rigid, hollow spindle is arranged bypassing said hinge shaft or pins and directly connecting said effector with the mechanical transmission system for transmitting at least rotating signals via said spindle to said effector.
Owner:TUEBINGEN SCI MEDICAL
Planetary-gear-type multiple-step transmission for vehicle
InactiveUS7101305B2Small axial lengthShorten the axial lengthToothed gearingsTransmission elementsGear wheelEngineering
Owner:TOYOTA JIDOSHA KK
Medication dispensing apparatus with triple screw threads for mechanical advantage
A medication dispensing apparatus that provides a mechanical advantage. During dose preparing, a nut rotating element (410) and a screw element (368) are in a first axial arrangement such that a screwing motion of the nut rotating element and screw element relative to the apparatus housing that moves the elements a first axial distance from a home position screws a nut (364) along a drive member threaded shaft (362) a second axial distance different than the first axial distance. During dose dispensing, the nut rotating element and the screw element are in a second axial arrangement, whereby a screwing motion of the screw element relative to the housing back toward the home position advances a plunger (366) in the distal direction to axially advance the nut and thereby the drive member and a fluid container piston to dispense medicine.
Owner:ELI LILLY & CO
Medical access sheath
InactiveUS20060041270A1Shorten the axial lengthInhibit migrationCannulasDilatorsAxial compressionSurgical site
An expandable sheath is insertable into a patient through an incision. Once inserted and advanced to the target surgical site, the sheath can be expanded to an enlarged diameter. The wall of the sheath is fabricated from a tubular structure comprising filamentous elements that extend axially and at least partially circumferentially along the length of the sheath. The tubular filamentous material is drawn or expanded axially to create the small diameter configuration that is inserted into the patient. A standoff attaches the distal end of the tubular filamentous material to the sheath hub by way of radially movable anchors. Additional filamentous tubular material extends out the proximal end of the hub. A compression mechanism forces the additional filamentous tubular material in the distal direction which causes axial compression and radial or diametric dilation of the working length of the sheath, that part of the sheath that extends beyond the proximal end of the hub. Radial dilation is accomplished with no substantial change in sheath working length.
Owner:ONSET MEDICAL CORP
Catch members for occluder devices
InactiveUS20070167981A1Shorten the axial lengthPrevent slidingOcculdersSurgical veterinaryMedicineAtrial septal defects
Devices and techniques for modifying and maintaining a configuration of an occlusion device for the closure of physical anomalies, such as an atrial septal defect, a patent foramen ovale (PFO), and other septal and vascular defects are described. The devices and techniques relate particularly to, but are not limited to, modifying and maintaining a configuration of a PFO occluder made from a polymer tube. The proximal portion of a catch member may be provided with one or more protrusions, or arms, or bump or other raised element for securing the occluder in a partial or fully deployed configuration, either temporarily or permanently.
Owner:WL GORE & ASSOC INC
Blade structure for a gas turbine engine
InactiveUS6478539B1Less stressEasy to manufacturePump componentsBlade accessoriesCircular discTurbine
A blade ring for a gas turbine engine, especially an aircraft engine, may be a rotor ring or disk or a stator ring. At least one blade (9) forming an airfoil (2) is secured to at least one carrier ring (1, 10). The blade (9) is fixed to the carrier ring or disk or shroud (1, 10), either through a platform (4) forming a foot portion of the blade or through a neighboring transitional section (12) forming part of the carrier ring or disk or shroud. The mechanical stress and the overall axial length of the blade ring are reduced by a transition fillet (6) between the surfaces (3) of the airfoil (2) and the platform (4) or the peripheral section (12). The transition fillet (6) has a curve (7) that narrows toward the platform (4) or peripheral section (12) with radii (R1, R2, R3) that have different centers and are largest close to the blade surface (3, 8) and smallest close to the ring surface. This fillet construction extends all around the blade and relative to an inner ring or disk and / or an outer ring.
Owner:MTU AERO ENGINES GMBH
Apparatus and method of drilling with casing
InactiveUS6899186B2Shorten the lengthShorten the axial lengthDrilling rodsConstructionsCasing hangerCasing string
The present invention generally relates to methods for drilling a subsea wellbore and landing a casing mandrel in a subsea wellhead. In one aspect, a method of drilling a subsea wellbore with casing is provided. The method includes placing a string of casing with a drill bit at the lower end thereof in a riser system and urging the string of casing axially downward. The method further includes reducing the axial length of the string of casing to land a wellbore component in a subsea wellhead. In this manner, the wellbore is formed and lined with the string of casing in a single run. In another aspect, a method of forming and lining a subsea wellbore is provided. In yet another aspect, a method of landing a casing mandrel in a casing hanger disposed in a subsea wellhead is provided.
Owner:WEATHERFORD TECH HLDG LLC
Screw catch mechanism for PFO occluder and method of use
ActiveUS20070276415A1Shorten the axial lengthSurgical veterinaryWound clampsAtrial septal defectsBlood vessel
Devices, delivery systems and delivery techniques for an occlusion device for the closure of physical anomalies, such as an atrial septal defect, a patent foramen ovale (PFO), and other septal and vascular defects are described. The devices, delivery systems and delivery techniques relate particularly to, but are not limited to, a patent foramen ovale (PFO) occluder made from a polymer tube, specifically, a petal-shaped occluder. In certain embodiments, the catch system includes a catch member with a screw catch mechanism for connecting to the occluder. A delivery system for use with the catch member includes a component for rotating the catch member relative to the occluder to engage the screw catch mechanism.
Owner:WL GORE & ASSOC INC
Magnetically Guided Catheter With Flexible Tip
A catheter includes a flexible tubing having a proximal end and a distal end. The catheter also includes an electrode assembly attached to the distal end of the flexible tubing and including a first magnet therein. The electrode assembly including an electrically conductive tip electrode and an electrically nonconductive coupler which is connected between the tip electrode and the distal end of the flexible tubing. The electrically conductive tip electrode comprises a hollow elongated tip electrode including a sidewall provided with one or more elongated gaps extending through the sidewall. The one or more elongated gaps providing flexibility in the sidewall for bending movement of the tip electrode relative to a longitudinal axis of the catheter body. The first magnet is responsive to an external magnetic field to selectively position and guide the electrode assembly within a body of a patient.
Owner:ST JUDE MEDICAL ATRIAL FIBRILLATION DIV
Adjustable length patent foramen ovale (PFO) occluder and catch system
ActiveUS20070250081A1Reduce profileShorten the axial lengthWound clampsPatent foramen ovaleTreating Site
Devices, delivery systems and techniques for an occlusion device for the closure of physical anomalies, such as an atrial septal defect, a patent foramen ovale (PFO), and other septal and vascular defects are described. The devices, delivery systems and techniques relate to, but are not limited to, a patent foramen ovale (PFO) occluder made from a substantially cylindrical form. An occluder having a distal side and a proximal side, with a catch system for securing the deployed configuration, is introduced into the treatment site by a delivery sheath. In one aspect, the occluder has an adjustable length center joint that allows the device to fit a particular septal defect. In some embodiments, the occluder includes a catch member that holds the occluder in the deployed, expanded profile configuration. In one aspect, the catch member also has an adjustable length.
Owner:WL GORE & ASSOC INC
Deformable flap catch mechanism for occluder device
ActiveUS20070244517A1Reduce axial lengthShorten the axial lengthSurgical veterinaryWound clampsSkin flapPatent foramen ovale
Devices, delivery systems, and delivery techniques for an occlusion device for closure of physical anomalies, such as an atrial septal defect, a patent foramen ovale (PFO), and other septal and vascular defects are described. Specifically, an occluder with a catch member that holds the occluder in the deployed, expanded profile configuration is provided within a delivery sheath. The proximal end of the catch member includes a flap that when positioned proximal to the proximal end of the occluder holds the occluder in the expanded profile configuration. The flap is sized and formed of a material that allows the flap to deform by bending back and forth in axial and radial directions. In certain embodiments, the flap has segments divided by notches. In certain embodiments, deforming the flap in the proximal direction requires a different amount of force than deforming the flap in the distal direction.
Owner:WL GORE & ASSOC INC
Hybrid vehicle driving device
InactiveUS6935450B1Prevent movementShorten the axial lengthElectric propulsion mountingGas pressure propulsion mountingEngineeringHybrid vehicle
A motor / generator is arranged radially outward of a middle portion of a front cover of a torque converter so that at least a part of the motor / generator axially overlaps the torque converter, with a predetermined gap (C) between the front cover and the rotor of the motor / generator. The rotor of the motor / generator is supported by either the torque converter or an engine crankshaft or by any two of the torque converter, a motor housing and the crankshaft. The rotor is not affected by the torque converter and the efficiency of the motor is not reduced.
Owner:AISIN AW CO LTD
Method and Apparatus for Quadrifilar Antenna with Open Circuit Element Terminations
ActiveUS20080174501A1Improve reception performanceSmall sizeAntenna arraysRadiating elements structural formsPhase shiftedEngineering
A quadrifilar antenna having helical windings is fed by a phase shift feed network, each winding having an open circuit termination element, the phase shift feeding network having forward directional phase shift paths from a feed input to phase shift feed output ports, and having a first reverse directional transmission path from one or more of the phase shift feed output ports back to a first isolation port, and a second reverse directional transmission path from another one or more of the phase shift feed output ports back to a second isolation port, the first and second isolation ports isolated from the forward directional phase shift paths, and a differential termination impedance, floating from ground, connected the first and second isolation ports. Optionally, the differential termination impedance is frequency selective.
Owner:MAXTENA
Hybrid vehicle
InactiveUSRE36678E1Shorten the axial lengthHigh voltageReciprocating combination enginesElectric propulsion mountingClutchExternal combustion engine
A hybrid vehicle having an internal combustion engine, a generator connected with an output shaft extending from the internal combustion engine, an electric motor axially aligned with the output shaft, an output gear assembly connected to an output shaft driven by the rotor of the electric motor and positioned between the generator and the electric motor, a clutch adapted to connect and disconnect the generator to / from the output gear assembly, a differential gear unit, and a counter shaft oriented in parallel the output shaft driven by the rotor.
Owner:EQUOS RES
Gear reducer electric motor assembly with internal brake
ActiveUS20090312134A1Shorten the axial lengthShort and compactBraking element arrangementsElectric devicesIntermediate stageElectricity
A compact gear reducer electric motor assembly with an internal brake disclosed and claimed wherein a high speed electric motor is interconnected with a gear reducer having substantial gear reduction. The assembly includes a spindle, a brake mounted substantially within said high speed electric motor and operable against a spring biasing said brake into engagement with ground. The brake is electrically actuated to permit transmission of energy to the gear reducer. The gear reducer includes an input, intermediate and output planetary stages. The input and intermediate stages residing within the spindle, and, the output planetary stage drives an output ring gear. Releasing means for releasing the output ring gear from the brake allowing rotation thereof.
Owner:FAIRFIELD MFG CO INC
Vehicle drive device
ActiveUS20110240430A1Improve cooling effectImprove manufacturabilityRotary clutchesGear lubrication/coolingFluid couplingElectric machine
A drive device for a vehicle configured between an internal combustion engine and a wheel. The drive device includes a rotary electric machine, and an engagement device connecting the drive device to the engine by a fluid coupling using hydraulic pressure. A case houses at least a portion of the drive device and includes a support wall extending radially, and a cylindrical projecting portion projecting from the support wall toward a side in an axial second direction that is in a direction opposite to the axial first direction. The engagement device includes an operating oil pressure chamber supplied with the hydraulic pressure. A rotor member of the rotary electric machine is radially supported by the cylindrical projecting portion in a rotatable state via a support bearing. The cylindrical projecting portion is formed with an operating oil supply passage supplying oil to the operating oil pressure chamber.
Owner:AISIN AW CO LTD +1
Hub unit bearing assembly and a method of making the same
InactiveUS6135643AEasy to assembleIncrease freedomRoller bearingsHubsEngineeringMechanical engineering
A hub unit bearing assembly includes a tapered roller bearing including an inner race (3), an outer race (4) having a fixture (4a) defined therein so as to extend radially outwardly therefrom, and a multiplicity of rollers (5) retained in a circumferential row by a cage (6) and rollingly positioned between the inner race (3) and the outer race (4). A hub (2) including the inner race (3) on a portion of an outer periphery of said hub (2). The inner race (3) is a member either integral with the hub (2) or separated from the hub (2). The cage (6) rotatably accommodates the respective rollers (5) in the form as retained thereby prior to assemblage of the cage (6) with the rollers (5) into the roller bearing. The cage (6) and the rollers (5) are, after the rollers have been mounted in the cage (6), inserted in between the inner race (3) and the outer race (4).
Owner:NTN CORP
Compact relativity backward wave oscillator (RBWO) with adjustable low-frequency-range frequency
ActiveCN102208315AReduce radial sizeCan be smallTravelling-wave tubesTransit-tube collectorsWave structureElectrical conductor
The invention discloses a compact relativity backward wave oscillator (RBWO) with an adjustable low-frequency-range frequency, and the oscillator provided by the invention is used for solving the problems that the RBWO size in a low frequency range is great, and the output microwave frequency is hard to adjust. The compact RBWO is in rotational symmetry with respect to a central axis, and composed of a cathode base, a cathode, an anode outer barrel, a stop neck, a slow wave structure, an inner conductor, a collector, a microwave output port, a solenoid field, two rows of supporting rods, a mode converter, a radiation port and a sealing plate; the slow wave structure is composed of five slow wave blades, the inner surface of each slow wave blade is in a trapezoid structure; the left end face of the collector is provided with an annular groove; the left end of the mode converter is cylindrical, and the right end of the mode converter is in a tapered structure; the radiation port is cylindrical, the left end of the radiation port is in a tapered structure and the right end of the radiation port is cylindrical; the sealing plate is pressed on the radiation port; and the frequency of the output microwave is adjusted by virtue of adjusting the semi-diameter R3 of the inner conductor. The compact RBWO has the advantages of compact structure and convenient and adjustable work frequency, thereby being beneficial to outputting a long pulse of the microwave.
Owner:NAT UNIV OF DEFENSE TECH
Radial-axial three-degree-of-freedom alternating current-direct current hybrid magnetic bearing
The invention discloses a radial-axial three-degree-of-freedom alternating current-direct current hybrid magnetic bearing used for non-contact suspension bearing. An axial control coil is arranged between a radial stator core and an axial stator core; an axial air gap is formed between the axial stator core and the end face of a rotor in the axial direction; three same stator core magnetic poles uniformly distributed in the circumferential direction extend from the wall of an inner cavity of the radial stator core to the axle center; same radial control coils are wound on the three stator core magnetic poles, and radial air gaps are formed between the stator core magnetic poles and the outer wall of the rotor in the radial direction; same axially magnetized annular permanent magnets are arranged between two axial sides of the radial stator core and the axial stator core; and S poles of the permanent magnets face the radial stator core, and N poles of the permanent magnets face the axial stator core. The radial-axial three-degree-of-freedom alternating current-direct current hybrid magnetic bearing integrates axial and radial functions, is only driven by a three-phase alternating current power inverter, is provided with two axially magnetized annular permanent magnets, controls the magnetic flux not to pass magnetic poles where the permanent magnets are positioned, and has the advantages of low power consumption, small volume, light weight and high bearing capacity.
Owner:JIANGSU UNIV
Plate-to-plate concentration mounting type RF coaxial connector
ActiveCN101350483AExtended service lifeOvercome the defect that cannot be installedTwo-part coupling devicesPull forcePeripheral plane
The invention discloses a plate-to-plate intensive assemblage coaxial connector, comprising two sockets and a commutator. A first flange and a second flange with different axial lengths are arranged on the peripheral planes of the two ends of the commutator; a groove is arranged on the side wall at the bottom of the opening of the socket; when the commutator is inserted into the socket, the first flange is located in the groove, the second flange clings to the inner side wall of the corresponding socket opening. Because the first flange, the second flange and the groove matching the first flange are provided, the plugging and pulling forces become varied, the commutator is left on one of the circuit boards when being pulled away, thereby, the operation time is saved and ineffective plugging and pulling actions reduced; in addition, the lockup between the shells is used to largely increase the plugging and adapting frequency. By taking advantage of the clearance between the commutator shell and the insulator thereof, the commutator deviates in the opening upon incorrect medium condition, as a result, the position is corrected automatically and the purpose of direct plugging and adapting is achieved.
Owner:宁波吉品科技有限公司
Catch system with locking cap for patent foramen ovale (PFO) occluder
ActiveUS20070250115A1Shorten the axial lengthSurgical veterinaryWound clampsAtrial septal defectsBlood vessel
Devices, delivery systems and delivery techniques for an occlusion device for the closure of physical anomalies, such as an atrial septal defect, a patent foramen ovale (PFO), and other septal and vascular defects are described. The devices, delivery systems and delivery techniques relate particularly to, but are not limited to, a patent foramen ovale (PFO) occluder made from a polymer tube. In certain embodiments, the occluder includes a catch system that holds the occluder in the deployed, expanded profile. The catch system includes a locking funnel cap. In some embodiments, the locking funnel cap forces the proximal ends of the occluder in a radially inward position to lock the catch member in place and prevent the occluder from moving from its deployed configuration.
Owner:WL GORE & ASSOC INC
In-wheel motor drive device
ActiveUS8596395B2Increase axial lengthShorten the axial lengthSpeed controllerElectric devicesMotor driveElectric machine
Owner:AISIN AW CO LTD
Variable damper
InactiveUS20080251982A1Compact designImprove damping performanceMachine framesNon-rotating vibration suppressionMagnetic valveControl theory
In a variable damper using magneto-rheological fluid that comprises a cylinder (12) filled with the fluid, a piston (16) slidably received in the cylinder and including an inner yoke (32; 62; 126), an outer yoke (31; 64, 65; 140) and a coil (34; 130), a piston rod (13) having an inner end attached to the piston and an outer end extending out of the cylinder and a magnetic valve formed in a gap between the inner and outer yokes, at least one of the outer yoke and inner yoke consisting of at least two parts that are joined to each other in an axial direction. The two piece arrangement of the inner yoke or outer yoke allows the end plates to be omitted because the gap spacer can be installed without requiring end plates, and this contributes to a compact design and a favorable damping property. Also, the manufacturing and servicing of the damper can be simplified. When end plates (134) are used, the freedom in the positioning of the coil is increased.
Owner:HONDA MOTOR CO LTD
Wave-band-cross mechanical frequency modulation relativity back wave oscillator
ActiveCN103456587AChange lengthEasy to adjustTravelling-wave tubesTransit-tube collectorsWave structureElectrical conductor
The invention relates to microwave source devices in the technical field of high-power microwaves and provides a wave-band-cross mechanical frequency modulation relativity back wave oscillator. The wave-band-cross mechanical frequency modulation relativity back wave oscillator comprises a cathode seat, a cathode, an anode outer cylinder, a cut-off neck, a slow wave structure, an inner conductor, a collector, a microwave output and a solenoidal magnetic field. The inner conductor is a cylinder, by adjusting the length of the inner conductor, the frequency of outputting microwaves can be adjusted, and outputting of wave-band-cross microwaves is achieved. An annular groove is formed in the collector, and a supporting rod is fixed on the anode outer cylinder. The wave-band-cross mechanical frequency modulation relativity back wave oscillator has the advantages that by adjusting the length of the inner conductor, frequency can jump between L wavebands and S wavebands, the adjusting manner is simple, the frequency in the wavebands can be adjusted, the bandwidth in the L-waveband frequency is adjusted by 7% or so, and the bandwidth in the S-waveband frequency is adjusted by 2% or so. The outer radius of a slow-wave vane can have a low value, and miniaturization is achieved. A groove structure is reserved at the left end of the collector, reflection of the tail end of the device can be increased, and achieving long-pulse outputting of the wavebands is facilitated.
Owner:NAT UNIV OF DEFENSE TECH
In-wheel motor drive device
ActiveUS20120248850A1Increase axial lengthIncrease costSpeed controllerElectric devicesMotor driveElectric machine
An in-wheel motor drive device is attached to an inner side of a wheel of a vehicle wheel and drives the vehicle wheel. The in-wheel motor drive device includes a rotating electric machine; a transmission mechanism that transmits the rotation of the rotating electric machine; a speed reducing mechanism that reduces in speed the rotation transmitted by the transmission mechanism; and an output shaft that outputs the reduced-speed rotation of the speed reducing mechanism to the wheel. The speed reducing mechanism and the output shaft are disposed on a first axis coaxial with a center of the wheel. The rotating electric machine is disposed on a second axis parallel to the first axis, and the rotating electric machine and the speed reducing mechanism are positioned in a radial cross section perpendicular to the first axis and the second axis.
Owner:AISIN AW CO LTD
Permanent magnet biased inner rotor radial magnetic bearing
The invention relates to a permanent magnet bias inner rotor radial magnetism bearing that is made up of out magnetizer, out magnetism separator, exciting winding, inner magnetizer, rotor iron core. Four stator iron cores form four magnetic poles and are connected with each other by out magnetism separator. Eight stator iron core forms eight magnetic poles and every stator magnetic pole has exciting winding. Outside the stator iron core is out magnetizer that is connected to stator iron core. The permanent magnet is located between the two out magnetizers. Inner the stator iron core is rotator iron core. And there is clearance between the inner surface of the stator iron core and the out surface of the rotator iron core. The second clearance exists between the out magnetizer and the permanent magnet to form electric excitation circuit. The invention has the advantage of reliability and easy to be controlled.
Owner:BEIHANG UNIV
Neural network generalized inverse permanent magnetism synchronous machine decoupling controller structure method without bearing
InactiveCN101227160AIncrease speedLow costElectronic commutation motor controlVector control systemsCycle controlRadial position
The invention discloses a constructing method of a nerval net generalized inversing bearingless permanent magnet synchronous motor decoupling controlling device, which takes two Clark inverse transformations, two electric current tracing type inverters, a bearingless permanent magnet and a load model as a whole to form a composite controlled object, a nerval net generalized inverse of the composite controlled object is formed through adopting static nerval net added with a plurality of linear links, then the nerval net generalized inverse is reversely arranged before the composite controlled object to form a generalized pseudolinear system, the generalized pseudolinear system is decoupled to three single input and output subsystems through linearization, finally a nerval net generalized inverse, the two Clark inverse transformations and the two electric current tracing type inverters are all formed to a nerval net generalized inversing bearingless permanent magnet synchronous motor controlling device, the controlling device can not only realize dynamic decoupling between a radial position system of a motor and torque moment system and between radial forces, but also be taken as a nonlinear open-cycle controlling device to use directly, and stable suspension and operation of a rotor of a motor can be ensured.
Owner:JIANGSU UNIV
High-speed fluidic device
InactiveUS6994531B2Small sizeImprove transmission efficiencyPortable liftingCombustion enginesLow speedEngineering
Owner:NSK LTD
Vehicle drive device
ActiveUS8622182B2Shorten the lengthShorten the axial lengthRotary clutchesFluid actuated clutchesFluid couplingElectric machine
A drive device for a vehicle configured between an internal combustion engine and a wheel. The drive device includes a rotary electric machine, and an engagement device connecting the drive device to the engine by a fluid coupling using hydraulic pressure. A case houses at least a portion of the drive device and includes a support wall extending radially, and a cylindrical projecting portion projecting from the support wall toward a side in an axial second direction that is in a direction opposite to the axial first direction. The engagement device includes an operating oil pressure chamber supplied with the hydraulic pressure. A rotor member of the rotary electric machine is radially supported by the cylindrical projecting portion in a rotatable state via a support bearing. The cylindrical projecting portion is formed with an operating oil supply passage supplying oil to the operating oil pressure chamber.
Owner:AISIN AW CO LTD +1
Turbocharger compressor wheel having a counterbore treated for enhanced endurance to stress-induced fatigue and configurable to provide a compact axial length
InactiveUS6994526B2Avoiding and reducing overhangProlong lifePropellersPump componentsImpellerStress induced
Owner:GENERAL ELECTRIC CO
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