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484results about How to "Reduce curvature" patented technology
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Steerable catheter with preformed distal shape and method for use
InactiveUS6096036AReduce curvatureTransvascular endocardial electrodesSurgical instrument detailsHeart chamberCurve shape
A catheter has a stylet formed of a shape-retentive and resilient material having a preformed curved shape at its distal end resulting in the catheter sheath having the preformed curved shape. The catheter sheath has a plurality of electrodes at its distal end for contacting selected biological tissue for imparting ablation energy thereto. The catheter sheath also has an axially mounted tendon for causing deflection of the distal end. The stylet material permits straightening the catheter sheath during insertion into the patient and advancing the electrodes to the target tissue. Upon removal of the straightening forces, such as by entry into a chamber of the heart, the stylet material resumes its preformed curved distal shape thereby forcing the catheter distal end with the electrodes into the same preformed curved shape. The operator may place the curved distal end into contact with the target tissue and axially move the tendon as desired to gain greater control over the bend in the distal end of the catheter sheath to adjust the radius of curvature of the distal end to obtain greater contact of the electrodes with the heart tissue. Preferably, the stylet is formed of nitinol.
Owner:CARDIAC PACEMAKERS INC
Electro-optic displays, and processes for the production thereof
An encapsulated electrophoretic display is produced by laminating an electrophoretic medium, comprising a plurality of discrete droplets (104) in a polymeric binder (106′), each droplet (104) comprising a plurality of electrophoretic particles dispersed in a suspending fluid, to a backplane (110) having at least one electrode at a temperature such that the polymeric binder (106′) flows and secures the electrophoretic medium to the backplane (110).
Owner:E INK CORPORATION
Electro-optic displays, and processes for the production thereof
InactiveUS8363299B2Reduce curvatureStatic indicating devicesElectrographic processes using charge patternColor imageDisplay device
Owner:E INK CORPORATION
Electro-optic displays, and processes for the production thereof
An encapsulated electrophoretic display is produced by laminating an electrophoretic medium, comprising a plurality of discrete droplets (104) in a polymeric binder (106′), each droplet (104) comprising a plurality of electrophoretic particles dispersed in a suspending fluid, to a backplane (110) having at least one electrode at a temperature such that the polymeric binder (106′) flows and secures the electrophoretic medium to the backplane (110).
Owner:E INK CORPORATION
Insulated Gate Semiconductor Device and Method for Producing the Same
ActiveUS20080087951A1Firmly connectedImprove breakdown voltageSemiconductor/solid-state device manufacturingSemiconductor devicesEngineeringSemiconductor
The invention has an object to provide an insulation gate type semiconductor device and a method for producing the same in which high breakdown voltage and compactness are achieved. The semiconductor device has a gate trench and a P floating region formed in the cell area and has a terminal trench and a P floating region formed in the terminal area. In addition, a terminal trench of three terminal trenches has a structure similar to that of the gate trench, and the other terminal trenches have a structure in which an insulation substance such as oxide silicon is filled. Also, the P floating region 51 is an area formed by implanting impurities from the bottom surface of the gate trench, and the P floating region is an area formed by implanting impurities from the bottom surface of the terminal trench.
Owner:DENSO CORP +1
Method and control unit for determining a cutting trajectory of a curve section of a roadway
ActiveUS20130006473A1Increase radiusImprove securitySteering initiationsDigital data processing detailsMechanical engineeringLine segment
A method for determining a cutting trajectory that enables a curve section of a lane to be cut by a vehicle. In the method, information about the curve section is received, and the curve section is divided into at least one curve segment having a segment length and a start curvature, the curve segment being a straight-line segment or a circular arc segment or a curve segment whose curvature is a function of an arc length of the curve segment. This is followed by determination of a cutting trajectory from the at least one curve segment, so that, at a specific point of the curve section, the cutting trajectory has a predetermined offset relative to a center of the lane.
Owner:ROBERT BOSCH GMBH
Lightweight impact resistant helmet system
Owner:SKIBA JOSEPH
Systems and methods for high-accuracy displacement determination in a correlation based position transducer
InactiveUS20020105656A1Reduce complexityReduce processing timeImage analysisOptical rangefindersCorrelation functionTransducer
An image which is determined by surface is captured and stored by sensing device. Subsequently, at a second image corresponding to a displacement of the surface is captured and stored. The two images are repeatedly compared at different offsets in a displacement direction. Theoretically, the most extreme value of the comparison will occur at the image offset that corresponds exactly with the actual displacement. However, typically none of the comparison offsets correspond exactly with the actual displacement, therefore interpolation between the comparison offsets is required. The method of comparing the images, as well as the method of interpolating to determining the image offset corresponding to the extreme value of the comparison can both contribute to systematic errors in estimating the displacement of the surface from the images. Herein, the systematic errors are rejected by correlation-based comparison systems and methods which reduce the curvature of the correlation function for offsets which bound the extreme value, and by interpolation systems and methods which are relatively insensitive to the asymmetry of the correlation function value points selected as the basis for the interpolation. These systems and methods allow fast, highly accurate, displacement determinations using relatively simplified calculations and relatively few correlation function value points. Thus, such a displacement measuring system can track high speed displacements with high accuracy. The systems and methods are especially suitable for measuring displacement of a surface using speckle images.
Owner:MITUTOYO CORP
Foldable electronic apparatus having display panel with variable curvature
ActiveUS20160378203A1Improve usabilityCurvature of the flexible display panel may decreaseCathode-ray tube indicatorsSubstation equipmentEngineeringFlexible display
A foldable electronic apparatus includes a flexible display panel, a first cover and a second cover configured to support a rear surface of the flexible display panel and be interconnected by a hinge member, and a first slider and a second slider configured to be installed on the first cover and the second cover and vary a curvature of the flexible display panel by an operation of sliding along the first cover and the second cover, respectively.
Owner:SAMSUNG ELECTRONICS CO LTD
Hybrid contact lens with improved resistance to flexure and method for designing the same
InactiveUS20080074611A1Increase comfortLow degree of flexureEye diagnosticsOptical partsGramEngineering
A hybrid contact lens includes a substantially rigid center portion having a flexural deformation of about 10% at an applied load of at least about 50 grams and a Dk of at least about 30×10−11 (cm2 / sec) (mL O2) / (mL mm Hg). The hybrid contact lens also includes a substantially flexible skirt portion connected to the center portion. A method of designing a hybrid contact lens includes determining the applied load that results in a selected flexural deformation.
Owner:SYNERGEYES
Hair iron
ActiveUS20090032048A1Easy to changeSimple structureCurling-ironsCurling-tongsBiomedical engineeringEngineering
A hair iron 1 includes a pair of grips 9 being rotatably connected to a base end so as to be openable and closable; and a heating part 11 being provided to be opposed to a tip end side of each grip 9 wherein each heating part 11 has a flat opposing surface, a rear surface side of the heating part 11 has a curved curling part 13, and at least one curling part 13 has an auxiliary case 15 with a curved surface having a different curvature from that of the curling part 13 so as to be attachable and detachable thereto and therefrom.
Owner:PLANNING1
Display device having a non-rectilinear display area
A display device includes a first substrate; a second substrate covering the first substrate; a liquid crystal layer between the first substrate and the second substrate; a plurality of pixels on the first substrate; and a light blocking member disposed on at least one of the first substrate and the second substrate, the light blocking member disposed in a curved area and defining a display area and a non-display area. The plurality of pixels includes a first pixel outside the curved area; and a second pixel in the curved area, and a pixel electrode of the first pixel has a different shape from a shape of a pixel electrode of the second pixel.
Owner:SAMSUNG DISPLAY CO LTD
Heliostat for sunlight concentration system and method of controlling the same
InactiveUS6984050B2Improve efficiencyReduce curvatureSolar heating energyPhotometry using reference valueHeliostatDaylight
A heliostat 5 for use in a sunlight concentration system for utilizing sunlight as energy according to this invention has a plurality of small concave mirror elements 8 and reflects and focuses sunlight reflected off the individual concave mirror elements to a light concentration portion as if upon reflection off a single large concave mirror 9. The angles of the concave mirror elements 8 are changed to define a single concave mirror having a predetermined curvature. When the incident angle of sunlight with respect to the concave mirror is large, the curvature is reduced (like a shallow dish). When the incident angle is small, the curvature is increased (like a deep dish).
Owner:MITAKA KOHKI
Piezoelectric Generator
InactiveUS20100244629A1Increase ratingsEfficient actionPiezoelectric/electrostriction/magnetostriction machinesPiezoelectric/electrostrictive/magnetostrictive devicesEngineeringPiezoelectric generator
The piezoelectric generator is characterized by providing a spacer member in the vicinity of a fixed end of an elastic plate mounted on a base plate by means of affixing both ends in such a way as to prevent the elastic plate not to be deformed unnecessarily when a load is applied to the elastic plate from above, so that a piezoelectric ceramic plate glued onto the elastic plate generates electric power by the elastic plate's deformation.
Owner:RION COMPANY +1
Nitride based semiconductor device and fabrication method for the same
ActiveUS20100008391A1Alleviate stressSuppress degradationOptical wave guidanceLaser detailsBlock layerBlocking layer
A nitride based semiconductor device includes: an n-type cladding layer; an n-type GaN based guide layer placed on the n-type cladding layer; an active layer placed on the n-type GaN based guide layer; a p-type GaN based guide layer placed on the active layer; an electron block layer placed on the p-type GaN based guide layer; a stress relaxation layer placed on the electron block layer; and a p-type cladding layer placed on the stress relaxation layer, and the nitride based semiconductor device alleviates the stress occurred under the influence of the electron block layer, does not affect light distribution by the electron block layer, reduces threshold current, can suppress the degradation of reliability, can suppress degradation of the emitting end surface of the laser beam, can improve the far field pattern, and is long lasting, and fabrication method of the device is also provided.
Owner:ROHM CO LTD
Lightweight impact resistant helmet system
InactiveUS20050273911A1Cheap constructionMinimizes bodily injuryWood working apparatusHatsFiberEnergy absorption
A strong, lightweight, impact resistant helmet system protects the wearer from impact injury and minimizes bodily injury to other players brought into contact therewith during blocking and tackling events. Weight reduction is achieved by reinforcing inner and outer surfaces of the helmet shell with long length, high strength fibers. Orientation of the fibers is such that the fiber lengths are aligned generally in the direction of tension and compression forces imposed on the helmet surface during impact. This reinforcement geometry permits use of a thin helmet shell. Efficient impact absorption by the helmet shell is accomplished by limiting the bend curvature produced at the impact location. The bend curvature reduction increases the contact area between the helmet shell and a pliable padded inner helmet made from energy absorbing polymeric foam disposed within the helmet shell in contact with its inner surface. The pliable padded inner helmet rests on the wearer's head, held in place by an attachment mechanism associated with the helmet shell. Energy is absorbed when the inner surface of the helmet shell contacts and compresses the inner helmet. The reduced bend curvature of the helmet shell spreads impact forces over a large area, and the impact load experienced by the wearer is decreased.
Owner:SKIBA JOSEPH +1
Electro-optic displays, and processes for the production thereof
A first apparatus for displaying a color image comprises an electro-optic display (1002) having a plurality of pixels, each of which can be independently set to a light-transmissive optical state or a substantially opaque optical state, and lighting means (1006) arranged to flash separate pulses of light of at least two differing colors on to one surface of the electro-optic display (1002). A second apparatus for generating pulses of light of differing colors comprising a light source and a filter assembly comprising first (1100) and second (1106) electro-optic layers each having a light-transmissive state and a colored state, the two colored states being different, and electrodes to switch these layers between these states.
Owner:E INK CORPORATION
Dual optic, curvature changing accommodative iol
ActiveUS20160256265A1Small sizeSmall surgical incisionIntraocular lensIntraocular lensAxial compression
The present disclosure concerns a curvature-changing, accommodative intraocular lens (IOL) for implantation in the capsular bag of a patient's eye. The IOL includes a fluid optic body having a cavity for containing an optical fluid, the cavity at least partially defined by a sidewall extending around the cavity and defining a diameter of the cavity and a deformable optical membrane intersecting the sidewall around a circumference of the sidewall and spanning the diameter of the cavity. The IOL further includes a second optic body spaced a distance apart from the fluid optic body and a plurality of struts extending from the sidewall and coupling the fluid optic body to the second optic body. The struts are configured such that axial compression of the capsular bag causes the struts to deform the sidewall in a manner that increases the diameter of the cavity, modifying a curvature of the deformable optical membrane.
Owner:ALCON INC
Trench mosfet with shallow trench for gate charge reduction
A power MOS device includes shallow trench structure for reduction of gate charge. To counteract the increase of Rds may caused by decreasing the depth of trench, the power MOS device further includes an arsenic Ion Implantation area underneath each trench bottom when N+ red phosphorus substrate is applied, and the concentration of said arsenic doped area is higher than that of epitaxial layer. As the shallow trench is performed, the gate contact trench could be easily etched over to penetrate the gate oxide, which will lead to a shortage of tungsten plug filled in gate contact trench to epitaixial layer. To prevent from this problem, a terrace poly gate is designed in a preferred embodiment of present invention. By using this method, the gate contact trench is lifted to avoid the shortage problem.
Owner:FORCE MOS TECH CO LTD
Insulated gate semiconductor device
Channel regions and gate electrodes are also disposed continuously with transistor cells below a gate pad electrode. The transistor cells are formed in a stripe pattern and allowed to contact a source electrode. In this way, the channel regions and the gate electrodes, which are positioned below the gate pad electrode, are kept at a predetermined potential. Thus, a predetermined drain-source reverse breakdown voltage can be secured without providing a p+ type impurity region on the entire surface below the gate pad electrode.
Owner:SEMICON COMPONENTS IND LLC
Method for bonding surfaces on a web
InactiveUS7179343B2Relaxing webCurvature can be modifiedLaminationLamination apparatusEngineeringMechanical engineering
Owner:KIMBERLY-CLARK WORLDWIDE INC
Coating equipment and method for tube-type PERC solar cells
ActiveCN107287579AReduce depthReduce gap sizeFinal product manufactureChemical vapor deposition coatingSilanesSolar cell
The invention discloses coating equipment for tube-type PERC solar cells. The coating equipment comprises a wafer loading region, a furnace body, a gas cabinet, a vacuum system, a heating system, a control system and a graphite boat; the gas cabinet is provided with a first gas pipeline for introducing silane, a second gas pipeline for introducing ammonia, a third gas pipeline for introducing trimethylaluminum, a fourth gas pipeline for introducing laughing gas and a fifth gas pipeline for introducing methane; the graphite boat is used for loading or unloading a silicon wafer; before being used or after being coated many times, the graphite boat needs to be subjected to pretreatment comprising the steps: drying the graphite boat; and coating at least one layer of silicon carbide film on the surface of the dried graphite boat. Correspondingly, the invention further discloses a coating method for tube-type PERC solar cells. By using the coating equipment and method, the pretreatment step of the graphite boat is simplified, the consumption of the silicon wafer is reduced, the silicon wafer is prevented from being scratched, and the EL yield of the cells is increased.
Owner:GUANGDONG AIKO SOLAR ENERGY TECH CO LTD +1
Method for decreasing warp and bow of silicon carbide wafer
InactiveCN102543718AReduce warpageReduce curvaturePolycrystalline material growthAfter-treatment detailsWaferingSufficient time
The invention discloses a method for decreasing warp and bow of a silicon carbide wafer, which includes the steps: applying mechanical stress on the grinded and polished silicon carbide wafer so that the wafer deforms towards the direction of flatness reduction, wherein the mechanical stress enables the wafer to reach the low warp and low bow as expected; and simultaneously, heating the wafer to the high enough temperature prior to annealing for sufficient time to enable crystal lattices of the wafer to slip and to be rearranged, so that deformation of the wafer is kept, and the wafer with the sufficiently-low warp and bow is obtained.
Owner:BEIJING TIANKE HEDA SEMICON CO LTD +1
Electrographic position location apparatus and method
InactiveUS7499036B2Simple designEasy to calculateInput/output for user-computer interactionTransmission systemsLocation EquipmentElectron
An apparatus for use in an electrographic position sensing system comprises an antenna system and a signal strength detector. In one embodiment, the antenna system comprises two antennas. The detector measures the signal strength from each antenna. A microprocessor contains an algorithm to calculate the position of the detector near the antennas.
Owner:LEAPFROG ENTERPRISES
Blade of axial flow-type rotary fluid machine
InactiveUS20060275134A1Reduce total pressure lossReduce curvaturePropellersPump componentsTurbine bladeEngineering
A first bent portion bent toward an intrados and a second bent portion located in the rear of the first bent portion and bent toward an extrados are provided on a camber line on a trailing edge in the rear of 90% of a chord length of a turbine blade having an extremely low aspect ratio for an axial-flow turbine. The inclination of the camber line immediately in the rear of the second bent portion on the side of a blade root is substantially equal to the inclination of the camber line immediately in front of the first bent portion, and the curvature of the second bent portion is decreased from the side of the blade root toward a blade tip. As a result, a higher-pressure portion on the intrados which is a pressure surface of the turbine blade is displaced toward the trailing edge, and thus a secondary flow from the side of the blade tip toward the blade root can be suppressed, whereby a pressure loss particularly in the vicinity of the blade root can be suppressed to the minimum.
Owner:HONDA MOTOR CO LTD
Systems and methods for high-accuracy displacement determination in a correlation based position transducer
InactiveUS6873422B2Reduce complexityReduce processing timeImage analysisOptical rangefindersCorrelation functionTransducer
An image comparison method and an interpolation method to determine the image offset corresponding to the extreme value of the comparison contributes to systematic errors in estimating the displacement of the surface from the images. The systematic errors are rejected by correlation-based comparison systems and methods which reduce the curvature of the correlation function for offsets that bound the extreme value, and by interpolation systems and methods that are relatively insensitive to the asymmetry of the correlation function value points selected as the basis for the interpolation. These systems and methods allow fast, highly accurate, displacement determinations using relatively simplified calculations and relatively few correlation function value points.
Owner:MITUTOYO CORP
Manufacturing method for cilicon epitaxial wafer for 6'' VDMOS tube
ActiveCN101047122AGuaranteed uniformityImprove uniformitySemiconductor/solid-state device manufacturingHigh concentrationTower
The present invention relates to a preparation method of silicon epitaxial wafer for power VDMOS tube. Firstly, selection and usage of substrate are important, the selected substrate not only can meet the requirements for device, but also can meet the requirements for epitaxy. Its preparation method includes the following steps: selecting proper gas corrosion flow and gas corrosion time, reducing concentration of gas corrosion impurity in epitaxial reactor so as to reduce self-doping in epitaxial growth process; first layer epitaxial growth, on the substrate surface with high concentration utilizing lower temperature to grow a layer of purity epitaxial layer, encapsulating substrate surface and edge, controlling its growth temperature, growth rate and epitaxial time so as to make encapsulating layer obtain ideal effect, at the same time, selecting proper epitaxial condition to make the deformation of epitaxial wafer be minimum; and second layer epitaxial growth, utilizing tower temperature to grow a layer of epitaxial layer whose resistivity and thickness can meet requirements for device.
Owner:NANJING GUOSHENG ELECTRONICS
Image processing device
ActiveUS20150130942A1Reduce curvatureIncrease awarenessColor television detailsClosed circuit television systemsImaging processingViewpoints
An image processing device 81 includes a distance information acquisition unit 35 and an image combination unit 30. Based on positions of a common subject on a plurality of images captured by a plurality of cameras 10, 11, 12, and 13 for capturing surrounding images of a vehicle, the distance information acquisition unit 35 calculates a first subject distance from a vehicle reference position O to the common subject, and calculates, based on the first subject distance, a second subject distance to a subject captured by one of the plurality of cameras 10, 11, 12, and 13. Based on the first subject distance and the second subject distance, the image combination unit 30 converts the captured images in which the plurality of cameras 10, 11, 12, and 13 are employed as viewpoints to images in which the reference position O is employed as a viewpoint, and combines the converted images on a single plane of projection.
Owner:MITSUBISHI ELECTRIC CORP
Magnetic core for antenna, method for producing magnetic core for antenna, and antenna
ActiveCN101657868AReduce brittlenessReduce curvatureLoop antennas with ferromagnetic coreTransformers/inductances magnetic coresMagnetic coreEngineering
Disclosed is a method for producing a magnetic core for antenna wherein thin metal strips are laminated. This method for producing a magnetic core for antenna is characterized in that a metal thin band is processed into strips having a width of the aimed magnetic core for antenna, then the thin strips are stacked through a resin layer to form a laminate, and after that the laminate is cut into a length of the aimed magnetic core for antenna.
Owner:HITACHI METALS LTD
Photoirradiation device and fiber rod
ActiveUS7101072B2Low damping factorEfficient use ofMechanical apparatusPoint-like light sourceOptical axisLight beam
A photoirradiation device in which an optical system can be miniaturized and utilization efficiency of light can be improved in a manner that includes a first lens and a second lens, which share refraction of light to convert light beams emitted from a plurality of light sources into the light beams substantially parallel to an optical axis, and a third lens focusing the light beams from the second lens on an incident surface 20A of a lightguide 20. A fiber rod which can output uniform light beams in a manner that includes a first rod having a single fiber and a second rod having a plurality of fibers.
Owner:GC CORP
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