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1913results about How to "Avoid cuts" patented technology

Interventional medical device component having an interrupted spiral section and method of making the same

A component for use as or incorporation within a medical instrument navigable through body vessels of a human subject is provided. The component includes a tubular portion with an interrupted spiral defined by alternating cut and uncut sections. The interrupted spiral has a rigidity between that of a continuous cut spiral and an uncut tube. The rigidity of the interrupted spiral along its length may be varied by changing its pitch or the number of bridge members or the length of each bridge member. According to a method of manufacturing such a component, a tubular member and a cutting member are provided. At least one of the tubular member and the cutting member is moved though an angle defining a helical path with respect to the other, while the cutting member is alternated between cutting and not cutting the tubular member to form an interrupted spiral.
Owner:CODMAN & SHURTLEFF INC

Diaphragm valve with reliability enhancements for atomic layer deposition

A shut-off type diaphragm valve adapted for use in an atomic layer deposition system includes a valve seat having an annular seating surface that surrounds an inlet of the valve and extends radially therefrom. The seating surface contacts a substantial portion of the first side of a flexible diaphragm when the diaphragm is closed, to facilitate heat transfer and counteract dissipative cooling of the diaphragm, thereby inhibiting condensation of a medium flowing through the valve passage. The seating surface is preferably flat and smooth, to prevent shearing of an elastomeric diaphragm. For a plastic diaphragm, a ring-shaped seating ridge may extend from the seating surface to cause localized permanent deformation of the diaphragm and enhanced sealing, while still allowing a substantial portion of the diaphragm to contact the seating surface for enhanced heat transfer. Valve speed enhancements and other reliability enhancing features are also described.
Owner:BENEQ OY

Hand held printing of text and images for preventing scew and cutting of printed images

The invention relates to a sensor and assembly comprised in a housing for a hand-held and hand-operated printing device controlled by a processor, and a method therefor. It provides that the assembly comprises an arrangement and a method for preventing skew and cutting of printed images.
Owner:XPANDIUM

Injection molding method and apparatus

InactiveUS7906048B2Enhanced performance characteristicReduce pressure applyAuxillary shaping apparatusFood shapingSource materialInjection molding process
A thermoplastic injection molding system and method of use is described for molding parts from heated plastics and other organic resins. The machine uses heat sources located along the barrel to heat the source material while an auger screw transports the source material in the barrel. This transport step does not shear the source material, nor does it use friction to produce the heat necessary to melt the source material. The material becomes substantially liquid or melted during the heating process, and the melted material is forced, by the auger screw, into a chamber whereupon a plunger, situated concentrically with the auger screw, injects the material from the chamber into a mold. Sensors located along the barrel and in the chamber ensure consistency between mold cycles. The controller dynamically adjusts the injection molding process to achieve more consistent and reliable molded parts.
Owner:KOALESCE

Compact axial-flow magnetic-levitation artificial heart pump

The invention provides a compact axial-flow magnetic-levitation artificial heart pump, in particular to an artificial heart pump characterized in that two permanent magnet bearings and a mix of radial magnetic bearing suspension, and the radial magnetic bearing and a permanent magnet motor share a stator and a rotor. The compact axial-flow magnetic-levitation artificial heart pump has the structure that the compact axial-flow magnetic-levitation artificial heart pump comprises a stator assembly, a rotor assembly, a front guidance impeller and a rear guidance impeller; a taper-shaped or axial permanent magnet bearing is respectively formed by a first permanent magnet (9) and a right permanent magnet ring (14) as well as a second permanent magnet (19) and a left permanent magnet ring (18) to realize the purpose that the rotor axially supports in a suspension mode; a torque coil (5) and a suspension coil (7) are respectively wound on a motor stator (6); and with a certain decoupling control algorithm, the motor stator not only generates torque force but also generates radial suspension support force. In the compact axial-flow magnetic-levitation artificial heart pump, the rotor is supported by permanent magnetic force and electromagnetic force, and the compact axial-flow magnetic-levitation artificial heart pump has the advantages of small damage on blood, less radiation, compact structure and the like, is easy to transplant, is suitable for patients suffering from cardiac function failure, heart diseases and the like and can be used for ventricular assisting for a long time or a short time.
Owner:WUHAN UNIV OF TECH

Five-axis linkage loading test device and loading test method for machine tool

The invention discloses a five-axis linkage loading test device for a machine tool. The device consists of a following loading mechanism mechanical part and a measurement and control system. The following loading mechanism mechanical part applies a load to a spindle through an interface of the spindle of the machine tool. The measurement and control system is used for realizing servo motor control, mechanism motion control, load calculation and signal processing functions of the following loading mechanism mechanical part. The five-axis linkage loading test method for the machine tool comprises the five major steps of: 1, measuring load data; 2, establishing a load spectrum; 3, organizing tool path data; 4, performing hardware solidification of the data; and 5, calibrating and correcting a database. The device and the method are universal and widely applicable to various types of tests in the reliability of the machine tool, and have practical significance and reference value for the research and development of high-performance load simulators in China.
Owner:BEIHANG UNIV

Nano talcpowder modified polypropylene composite material and preparation method thereof

ActiveCN102532685AHigh rigidity and toughnessWide range of applicationsMicron scalePolypropylene composites
The invention provides a nano talcpowder modified polypropylene composite material and a preparation method thereof. A nano-scale talcpowder filler is added and a proper amount of traditional micro-scale talcpowder is added for synergistic modification of polypropylene, an agglomeration phenomenon of the nano filler is avoided to the greatest extent by a special feed and extrusion process, and the composite material with higher comprehensive performance and wider application range is obtained under the conditions of relatively low material density and cost.
Owner:SHANGHAI PRET COMPOSITES

Sugarcane seedling integrity detection system and method

The invention discloses a sugarcane seedling integrity detection system and method, and the detection system includes a sugarcane conveying mechanism, a guiding mechanism, a collecting drum and a driving device; the large bell end of the guiding mechanism is corresponding to the output port of the sugarcane conveying mechanism, and a stem node induction mechanism is arranged on a sugarcane conveying travel path at the small bell end of the guiding mechanism; the two ends of the collecting drum are arranged on an installation base in a mode of capable of rotating, one end tube opening of the collecting drum is corresponding to the small bell end of the guiding mechanism, and the drum wall of the outer surface of the collecting drum is fixedly connected with a first gear, and is provided with a collecting round hole passing through the drum wall; a shaft of the driving device is provided with a second gear engaging with the first gear; an image acquisition mechanism is installed in the collecting round hole; the stem node induction mechanism, the stem node induction mechanism and the driving device are connected with a control device; the control device is connected with an image processing device, an image analysis device is connected with the image acquisition mechanism; and the system combining the corresponding method can detect sugarcane seedling integrity.
Owner:GUANGXI UNIV

Built-in mobile pallet of container

The invention relates to a built-in mobile pallet of a container, comprising a rectangular chassis with rolling wheels at the bottom, wherein a plurality of guide devices are arranged at two lateral parts and the edge corner parts of the chassis; the guide devices are of guide wheel structures, and the peripheral surface of each guide wheel protrudes out of the lateral side of the chassis; and locking devices are arranged at two corner parts of the rear edge of the chassis. In the invention, the guide wheels are arranged at the lateral parts and the edge corner parts of the chassis, which converts sliding friction with larger resistance into rolling friction with smaller resistance; the peripheral surface of each guide wheel at the edge corner part is firstly in contact with a firm door frame of the container in the loading process, therefore, the relatively parallel position between the pallet and the container is well regulated basically; in addition, the guide wheels at the lateral parts can self-adaptively regulate the relative position between the pallet and the container in the continuous conveying process, thereby preventing the wall of the container from being crashed, even lacerated and effectively protecting the container; and locking hooks arranged at the rear edge corner parts are reasonable in structure, convenient to use and reliable to lock.
Owner:WUXI CLS MASCH CO LTD

Wafer-level packaging method of image sensor chips

A wafer-level packaging method of image sensor chips comprises the steps of providing wafers, mixed substrates and carrier plates. The wafers comprise a plurality of image sensor chips, and the mixed substrates comprise a supporting frame and a plurality of transparent substrate units. The supporting frame comprises a plurality of windows, the transparent substrate units cover the windows correspondingly, and the wafers, the mixed substrates and the carrier plates are fixed together in sequence in an overlapped mode. The back faces of the wafers are subjected to a line redistribution process and a welding flux protrusion manufacturing process, and the wafers and the mixed substrates are cut along cutting channels, so that the image sensor chips are separated to a plurality of image sensor chip modules which comprise separated mixed substrate units and image sensor chip units bonded with the mixed substrate units. By means of the method, the image sensor chips are maintained to be clean in the whole packaging process without being damaged, and the packaged image sensor chip modules have high reliability.
Owner:格科微电子(浙江)有限公司

Automatic fiber laying variable-angle path planning method for non-developable curved surface part

ActiveCN102529115ANatural frequency can be changedExcellent performance indexFiberData information
The invention discloses an automatic fiber laying variable-angle path planning method for a non-developable curved surface part, which relates to a fiber laying path plan making method for a non-developable curved surface part and is used for solving the problem that in the complexity of a fiber laying process, the appearance accuracy and various properties of a composite material are influenced by inevitable shearing and re-conveying phenomena occurring in the automatic fiber laying process of the non-developable curved surface part. In a scheme I, the method comprises the following steps of: acquiring data information from a non-developable revolving barrel part; calculating the laying reference angle of a presoaked tow on each intersection line; determining points on an initial path; determining points on other paths; and making a path line. A scheme II is different from the scheme I in that data information is acquired from a non-developable curved surface variable-section conical shell part; and a scheme III is different from the scheme I and the scheme II in that data information is acquired from a non-developable curved surface variable-section joint part. The method is used for planning an automatic fiber laying variable-angle path on the outer surface of the non-developable curved surface part.
Owner:HARBIN INST OF TECH

Thin-film transistor, TFT-array substrate, liquid-crystal display device and method of fabricating the same

A thin-film transistor includes a gate layer, a gate insulting layer, a semiconductor layer, a drain layer, a passivation layer (each of which being formed on or over an insulating substrate), and a conductive layer formed on the passivation layer. The conductive layer is connected to the gate layer or the drain layer by way of a contact hole penetrating at least the passivation layer. The passivation layer has a multiple-layer structure comprising at least a first sublayer and a second sublayer stacked, the first sublayer having a lower etch rate than that of the second sublayer. The first sublayer is disposed closer to the substrate than the second sublayer. The second sublayer has a thickness equal to or less than that of the conductive layer. The shape or configuration of the passivation layer and the underlying gate insulating layer can be well controlled in the etching process, and the conductive layer formed on the passivation layer is prevented from being divided.
Owner:NEC LCD TECH CORP

Liquid die forging and rolling compound formation method for GH4033 high-temperature alloy irregular-section large ring piece

The invention relates to a liquid die forging and rolling compound formation method for a GH4033 high-temperature alloy irregular-section large ring piece. The method comprises the following steps of: 1) smelting; 2) performing liquid die forging, namely fixing a liquid die forging mold on an indirect extrusion casting machine, pouring a quantitative amount of alloy solution into the liquid die forging mold at the pouring temperature of between 1350 and 1450 DEG C, pressurizing at the speed of 40 to 50 mm/s, filling for 1 to 6 seconds at the specific pressure of 300 to 400 MPa, keeping the pressure for 50 to 90 seconds, and thus obtaining a similarly final section ring blank; 3) homogenizing; 4) performing afterheat isothermal rolling, namely cooling the homogenized similarly final section ring blank to the temperature of between 1100 and 1140 DEG C, and performing afterheat isothermal rolling on a radial shaft compound ring rolling machine; 5) performing thermal treatment, namely performing solid solution instant thermal treatment, keeping the ring blank at the temperature of between 900 and 1000 DEG C for 1 to 2 hours, performing air cooling, then heating to the temperature of 1080 DEG C, keeping the temperature for 8 hours, performing air cooling to the temperature of 750 DEG C, keeping the temperature for 16 hours, and performing air cooling; and 6) finishing.
Owner:SOUTHWEST UNIVERSITY

Forging forming process of heteromorphic transition section of super large pressure vessel

ActiveCN102489660AGuaranteed axial lengthAvoid cutsHollow articlesPunchingEngineering
The invention relates to a forging process of super large workpieces and provides a forging forming process of a heteromorphic transition section of a super large pressure vessel. The process comprises the following steps of: 1) punching; 2) drawing out; and 3) reaming with a special lower reaming anvil by adopting free forging, wherein the forming surface of the special lower reaming anvil is raised along the low and middle parts of the two axial ends of a forging stock; aiming at forming of each indexing region of the forging stock, firstly the two axial ends of the indexing region are deformed through forging and pressing and are matched with the middle raise of the special lower reaming anvil to form bidirectional axial limits; and after reaming, the inner circumferential surface of the forging stock comprises an inner concave surface formed through the middle raise of the special lower reaming anvil. The process has the following beneficial effects that: through the final inner concave surface of the inner circumferential surface of the forging stock, the dressing metals are saved, the raw material consumption can be reduced, the machining allowance is reduced, the metal flow lines are prevented from being cut off and the forging block quality is improved; and the process is suitable for manufacturing the heteromorphic transition section forging of the super large pressure vessel.
Owner:CHINA ERZHONG GRP DEYANG HEAVY IND
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