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121results about How to "Improve long-term durability" patented technology
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Methods for processing biological tissue
ActiveUS20060154230A1Remove background levelAvoid degradationDead animal preservationPhosphateCalcification
A method for processing biological tissue used in biological prostheses includes providing a tissue procurement solution formed from a phosphate buffered saline (PBS) solution and a chelating agent. The tissue is transferred from the tissue procurement solution and undergoes chemical fixation. The fixed tissue is then immersed in a series of fresh bioburden reduction process (BRP) solutions to extract phospholipids. The tissue procurement solution reduces the bioburden on the stored tissue and preserves tissue architecture by minimizing tissue swelling. The tissue procurement solution further reduces calcium from the incoming water and / or tissue, and inhibits enzymes that digest the collagen matrix. The serial immersion of the tissue in the fresh bioburden solutions ensures optimal extraction of phospholipids thereby mitigating subsequent calcification of the tissue.
Owner:MEDTRONIC INC
Methods for processing biological tissue
ActiveUS20060207031A1Remove background levelAvoid degradationSuture equipmentsDead animal preservationCalcificationPhospholipid
A method for processing biological tissue used in biological prostheses includes providing a tissue procurement solution formed from a phosphate buffered saline (PBS) solution and a chelating agent. The tissue is transferred from the tissue procurement solution and undergoes chemical fixation. The fixed tissue is then immersed in a series of fresh bioburden reduction process (BRP) solutions to extract phospholipids. The tissue procurement solution reduces the bioburden on the stored tissue and preserves tissue architecture by minimizing tissue swelling. The tissue procurement solution further reduces calcium from the incoming water and / or tissue, and inhibits enzymes that digest the collagen matrix. The serial immersion of the tissue in the fresh bioburden solutions ensures optimal extraction of phospholipids thereby mitigating subsequent calcification of the tissue.
Owner:MEDTRONIC INC
Phosgard, a new way to improve poison resistance in three-way catalyst applications
ActiveUS7749472B2Mitigates deleterious poisoning of a catalytic memberPreventing and reducing fouling and poisoningNitrogen compoundsInternal combustion piston enginesToxicantRefractory
The present invention provides for novel poisoning-resistant catalysts used for automobile exhaust gas treatment systems. To alleviate the detrimental affects of engine oil and / or fuel additive poisoning the present invention provides for an overcoat layer comprising a porous refractory oxide and one or more base metal oxides, which is coated over one or more precious metal containing washcoat layers. The overcoat of the present invention prevents phosphorous as well as other poisoning deposits, from fouling and / or negatively interacting with the underlying precious metal containing washcoats. In an alternative embodiment, the present invention provides for the coating of the upstream end of a catalytic member by the overcoat layer, thereby creating an upstream poison capture zone.
Owner:BASF CORP
Composite magazine for chambering ammunition in a firearm
InactiveUS7533483B1Minimize jammingSpeed up the flowBreech mechanismsAmmunition loadingEngineeringFlange
An improved magazine for use in existing firearms comprises a housing, a follower, a spring, a spring hold and a cap. The housing comprises protruded surfaces for structural strength and a projection that acts as a stop member to define the maximum insertion of the magazine into the firearm magazine well. The follower comprises two follower legs and a spring retainer, and travels up and down the housing. The perimeters of the follower and follower legs mirror the internal profile of the magazine housing for a well-defined travel path within the magazine housing. The spring hold comprises a spring retainer and a round protrusion that locks it into the cap via a circular cut. The cap comprises flanges that slide into the slots against the end stop at the bottom of the housing.
Owner:UNITED STATES OF AMERICA THE AS REPRESENTED BY THE SEC OF THE ARMY
Phosgard, a new way to improve poison resistance in three-way catalyst applications
ActiveUS20080038172A1Preventing and reducing foulingPreventing and reducing and poisoningNitrogen compoundsInternal combustion piston enginesRefractorySediment
The present invention provides for novel poisoning-resistant catalysts used for automobile exhaust gas treatment systems. To alleviate the detrimental affects of engine oil and / or fuel additive poisoning the present invention provides for an overcoat layer comprising a porous refractory oxide and one or more base metal oxides, which is coated over one or more precious metal containing washcoat layers. The overcoat of the present invention prevents phosphorous as well as other poisoning deposits, from fouling and / or negatively interacting with the underlying precious metal containing washcoats. In an alternative embodiment, the present invention provides for the coating of the upstream end of a catalytic member by the overcoat layer, thereby creating an upstream poison capture zone.
Owner:BASF CORP
Solid polymer electrolyte membrane electrode assembly and solid polymer electrolyte fuel cell using same
InactiveUS20060099475A1Inhibit deteriorationReduce frequencySolid electrolytesFuel cells groupingPolymer electrolytesFuel cells
A solid polymer electrolyte membrane electrode assembly (cell) comprising a fuel electrode membrane disposed on one surface of a solid polymer electrolyte membrane, and an oxidant electrode membrane disposed on the other surface of the solid polymer electrolyte membrane, and wherein ions of at least one metal of Ce, Tl, Mn, Ag and Yb are contained in the solid polymer electrolyte membrane of the cell; and a solid polymer electrolyte fuel cell using the cell.
Owner:MITSUBISHI HEAVY IND LTD
Organic PTC thermistor
InactiveUS6607679B2Improve reliabilityImprove stabilityPrimary cell maintainance/servicingConductive materialThermoplastic elastomerThermistor
In an organic PTC thermistor comprising a matrix of at least two high-molecular weight compounds, a low-molecular weight organic compound, and conductive particles having spiky protuberances, a thermoplastic elastomer is contained in the matrix whereby the thermistor is improved in reliability and performance stability.
Owner:TDK CORPARATION
Elastomeric riblets
ActiveUS20100282909A1Increase fluid resistancePromote oxidationVehicle componentsCoatingsMetal foilEngineering
An array of aerodynamic riblets incorporates a high elongation elastomeric layer having spaced tips and optionally a protective cladding. The elastomeric layer may be adhered to an aerodynamic surface directly or as an appliqué in combination with one or more of an adhesive layer, one or more supporting polymer layers and a metal foil layer.
Owner:THE BOEING CO
DC/DC converter
ActiveUS7800921B2Low costImprove power densityTransformersEfficient power electronics conversionInductorTransformer coupling
Owner:VITESCO TECH USA LLC
Motor built-in magnetic bearing device
InactiveUS20090127956A1Improve long-term durabilityReliabilityPump componentsFlexible member pumpsSupporting systemMagnetic bearing
The device includes a rolling bearing unit supporting a radial load and a magnetic bearing unit supporting an axial load and / or a bearing preload; an electromagnet fitted to a spindle housing so as to confront, on a non-contact basis, a flange shaped thrust plate mounted on a main shaft; a motor rotor of a motor for driving the shaft, and a motor stator opposed to the rotor, the shaft being driven by magnetic or Lorentz forces developed between the rotor and the stator; and a sensor detecting an axial force acting on the bearing unit, and a controller controlling the electromagnet. In this device, the stiffness of a composite spring formed by the bearing unit and a support system for the bearing unit is chosen to be higher than the negative stiffness of a composite spring of a motor part comprised of the electromagnet and the motor.
Owner:NTN CORP
Liquid accelerator for sprayed concrete and preparation method and application thereof
The invention relates to a low rebound low-alkaline liquid accelerator for sprayed concrete, and a preparation method and application thereof, belonging to the technical field of mine and tunnel construction. The liquid accelerator comprises the following components in parts by mass: 35-45 parts of aluminum sulfate, 4-8 parts of triethanolamine, 3-9 parts of sodium fluoride, 1-3 parts of regulating component, 6-12 parts of rebound inhibitor component and 35-55 parts of water. The accelerator can effectively solve the general problem at present that the sprayed concrete has high rebound rate, low strength and poor durability, so that the sprayed concrete has characteristics of high workability (low rebound rate and less dust) and high durability (high strength, high anti-permeability and high corrosion resistance), the construction production environment condition of the sprayed concrete is improved, and long-term safe usability of the sprayed concrete structure is improved.
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT +1
Fiberglass mesh scrim reinforced cementitious board system
InactiveUS20140138007A1High densityImprove long-term durabilityConstruction materialSolid waste managementSpatial OrientationsYarn
Owner:UNITED STATES GYPSUM CO
Detecting device for valve opening-closing
InactiveUS20090322359A1Improving opening degree sensing performanceSimple mechanical structureOperating means/releasing devices for valvesResistance/reactance/impedenceLower limitLong term durability
Disclosed is a device for sensing the opening degree of a valve, which can easily determine the upper and lower limits without using upper and lower limit switches so that, besides simplifying the mechanical structure, the device can be easily installed, maintained, and repaired. The device can avoid basic errors and improve the opening degree sensing performance without using upper and lower limit switches, cams, and a spline so that, by simplifying the mechanical structure, the device can be manufactured, installed, maintained, and repaired at a low cost, and its long-term durability is improved. The device has a main gear adapted to disengage from the meter gear when the main gear is rotated excessively so that any damage to the meter gear and potentiometer, which may occur during installation or use, is prevented.
Owner:RPM TECH
Dc/dc converter
ActiveUS20080205089A1Low costImprove power densityTransformersEfficient power electronics conversionEngineeringInductor
Power converter system topologies comprise a DC / DC converter. The DC / DC converter includes a transformer coupling a high side to a low side. The high side may include an inverter bridge in the form of an inverter module and an inductor. The low side may include a rectifier in the form of a rectifier module and a pair of inductors. The transformer may take the form of a planar transformer.
Owner:VITESCO TECH USA LLC
Composite core material for vacuum insulation panel, preparation method thereof, and vacuum insulation panel using same
ActiveCN103108749AImprove long-term durabilityExcellent initial thermal insulation performanceInsulation improvementBuilding constructionsGlass fiberVacuum pack
Owner:ES GLOBAL CO LTD
Composites Made of Thermoplastic Polymers, Residual Oil, and Cellulosic Fibers
InactiveUS20110263758A1Reduce incompatibilityEnergy efficiencyChemical industryPlastic recyclingCellulose fiberResidual oil
A method is disclosed for recycling polymer containers contaminated with oil, for example used HDPE motor oil containers, in an energy efficient manner, that does not require a costly washing step. The commercial value of the polymers is preserved by converting the contaminated polymers into value-added products. Composites are made from discarded motor oil containers, the residual motor oil therein, cellulosic fibers, and blending agents or other additives. In one embodiment, the process uses the residual oil to advantage as a fiber blending agent, or to make polymer types in a blend more compatible with one another.
Owner:BOARD OF SUPERVISORS OF LOUISIANA STATE UNIV & AGRI & MECHANICAL COLLEGE
Nitride semiconductor light emitting device and method of manufacturing the same
InactiveUS20140183590A1Enhanced light scatteringImprove long-term reliabilitySemiconductor/solid-state device manufacturingSemiconductor devicesLong term durabilityActive layer
A nitride semiconductor light emitting device and a method of manufacturing the same are disclosed. The nitride semiconductor light emitting device includes an n-type nitride layer; an active layer formed on the n-type nitride layer; a p-type nitride layer formed on the active layer; a current blocking pattern formed on the p-type nitride layer; a transparent conductive pattern formed to cover upper sides of the p-type nitride layer and the current blocking pattern, and having a contact hole through which a portion of the current blocking pattern is exposed; and a p-electrode pad formed on the current blocking pattern and the transparent conductive pattern, and directly connected to the current blocking pattern. The nitride semiconductor light emitting device can improve long term durability by securing excellent light scattering properties while enhancing adhesion of a p-electrode pad.
Owner:ILJIN LED
Nonmagnetic toner
Owner:CANON KK
Magnetic bearing device
InactiveUS20090046963A1Improve long-term durabilityIncrease speedDomestic cooling apparatusPump componentsEngineeringNegative stiffness
A magnetic bearing device includes a main shaft (13), a flange shaped thrust plate (13a) coaxially mounted on the main shaft so as to extend perpendicular to the main shaft and made of a ferromagnetic material, a rolling bearing unit for supporting a radial load and a magnetic bearing unit for supporting one or both of an axial load and a bearing preload, an electromagnet (17) fitted to a spindle housing (14) so as to confront the thrust plate, without contact, a sensor (18) for detecting an axial force acting on the main shaft, and a controller (19) for controlling the electromagnet in response to an output from the sensor. In this magnetic bearing device, the stiffness of a composite spring formed by the rolling bearing unit and a support system for the rolling bearing unit is so chosen as to be higher than the negative stiffness of the electromagnet.
Owner:NTN CORP
Semi-rigid concrete and preparation process thereof
ActiveCN103641417AThe preparation process steps are simpleEasy to operateSolid waste managementPolymer scienceFly ash
The invention discloses semi-rigid concrete and a preparation process thereof. The semi-rigid concrete is concrete which is prepared through replacing part of fine aggregate of ordinary concrete with a flexible material and then blending, wherein the mass of the replaced fine aggregate is equal to that of the replacing flexible material; the flexible material contains the following ingredients in percentage by mass: 30-40% of rubber powder, 30-40% of rubber grains, 0.5-1.5% of polypropylene fibers, 3-8% of fly ash and 20-28% of mineral admixture; zinc stearate is required to be removed from the surfaces of the rubber grains and the surface of the rubber powder through a strong-base solution. The preparation process comprises the steps: (1) preparing the flexible material and carrying out grading combination in proportion; (2) preparing the semi-rigid concrete. According to the preparation process disclosed by the invention, the steps are simple, the operation is simple and convenient, the invested cost is low, the use effect is good, and the defects in the existing ordinary concrete that the deformation is little, the brittleness is high, the tensile strength is low, and the like can be made up.
Owner:THE FOURTH ENG CO LTD OF CHINA RAILWAYNO 20 BUREAU GRP
Gear and manufacturing method for the same
ActiveUS20140090503A1Increased strengthImprove long term durabilityPortable liftingGear teethEngineeringTooth surface
A gear includes teeth 3 to be engaged with teeth of a corresponding gear to transmit a rotational motion, in which a form (b) of a tooth root side of each tooth 3 includes: a first curved surface c which smoothly connects with a tooth surface a having an involute curve and has a profile represented by a curve which is convex in a direction opposite to the involute curve of the tooth surface a; and a second curved surface d which smoothly connects with the first curved surface c and has a profile defined by a quadratic function having a curve being convex in the same direction as that of the first curved surface c. Therefore, a stress generated on the tooth root side at the time of engagement with the teeth of the corresponding gear can be reduced, and the strength of the teeth can be increased.
Owner:ENPLAS CORP
Derivative electrocatalyst for growing Prussian blue or Prussian blue analogues in situ on metal substrate and preparation method of derivative electrocatalyst
ActiveCN110449156AGood shape flexibilityImprove electrocatalytic performanceMetal/metal-oxides/metal-hydroxide catalystsElectrodesMetal ions in aqueous solutionAdhesive
The invention relates to a derivative electrocatalyst for growing Prussian blue or Prussian blue analogues in situ on a metal substrate and a preparation method of the derivative electrocatalyst. Themethod comprises the following steps: pre-treating the metal substrate, immersing the metal substrate into a metal cyanate aqueous solution or a metal cyanate alcoholic solution, and adding an acid into the system so as to obtain a substrate on which Prussian blue or Prussian blue analogues grow; and calcining the substrate so as to obtain the derivative electrocatalyst for growing Prussian blue or Prussian blue analogues in situ on the metal substrate. According to the method disclosed by the invention, in-situ growth of derivatives of the Prussian blue or Prussian blue analogues can be realized on multiple metal substrates, varieties of metal cyanide ions are regulated, products of different morphologies, compositions and physicochemical properties can be obtained, the prepared electrocatalyst can directly serve as an electrode, use of an adhesive is avoided, the preparation process is simplified, the resistance is reduced, and rapid electron transfer and effective mass transfer processes can be ensured, so that the catalytic activity is improved.
Owner:SHANDONG UNIV
Organic electroluminescent element
ActiveUS20140014937A1Suppress direct reactionImprove long-term durabilitySolid-state devicesSemiconductor/solid-state device manufacturingInter layerHole injection layer
Provided is an organic electroluminescent element superior in long-term durability and lifetime characteristics. The organic electroluminescent element has a structure where plurality of light-emitting layers formed via an intermediate layer are interposed between a positive electrode and a negative electrode. The intermediate layer has a mixed layer, a first layer, and a hole-injection layer which are formed in this order from the positive electrode to the negative electrode, the mixed layer containing an electron-donating substance and an electron-transporting organic material, and the first layer being made of an electron-transporting material. The first layer has a thickness in a range of 0.2 to 2.0 nm. The hole-injection layer consists of an electro-accepting organic material.
Owner:SAMSUNG DISPLAY CO LTD
Pneumatic tire
InactiveCN103129314AImprove long-term durabilitySpecial tyresPneumatic tyre reinforcementsBreaking strengthCresol
The present invention provides a pneumatic tire having a jointless band obtained by covering a cord having a cord breaking strength of 200 to 600 N and a degree of elongation at a tension of 66 N of 1.0 to 3.5 % with a rubber composition for band cord topping comprising a given amount of sulfur, a given amount of a predetermined carbon black, a given amount of at least one compound selected by the group consisting of resorcinol resin, modified resorcinol resin, cresol resin, modified cresol resin, phenol resin and modified phenol resin, and a given amount of at least one compound selected from the group consisting of a partial condensate of hexamethoxymethylolmelamine and a partial condensate of hexamethylolmelaminepentamethylether based on a given amount of a rubber component.
Owner:SUMITOMO RUBBER IND LTD
Elastomeric riblets
InactiveUS20140174642A1Reduce staticImprove long-term durabilityOrnamental structuresSpecial ornamental structuresMetal foilEngineering
An array of aerodynamic riblets incorporates a high elongation elastomeric layer having spaced tips and optionally a protective cladding. The elastomeric layer may be adhered to an aerodynamic surface directly or as an appliqué in combination with one or more of an adhesive layer, one or more supporting polymer layers and a metal foil layer.
Owner:THE BOEING CO
Diaphragm, diaphragm valve, and method of manufacturing diaphragm
ActiveUS20110233443A1Reducing stress appliedGood long-term durabilityDiaphragm valvesOperating means/releasing devices for valvesLong term durabilityConvex side
Provided are a diaphragm, a diaphragm valve, and a method of manufacturing a diaphragm capable of increasing a flow rate (Cv value) of gas without degrading long-term durability even when a displacement amount is increased. A diaphragm (1) has an outer diameter Φ of 10 to 35 mm and includes a dome portion (1D) in a dome shape and a flange portion (1T) formed continuously at a peripheral edge of the dome portion (1D) via a boundary portion (1K), the boundary portion (1K) has a radius of curvature R of 0.6 mm or more on a convex side of the dome portion (1D), and the diaphragm is formed of a cobalt-based super-alloy.
Owner:SEIKO INSTR INC
Flexible material used for modifying concrete as well as preparation process and application of flexible material
ActiveCN103739220AReasonable component designEasy to processSolid waste managementPolymer scienceSlag
The invention discloses a flexible material used for modifying concrete as well as a preparation process and application of the flexible material. The flexible material comprises the following components by mass percent: 30%-40% of rubber powder, 30%-40% of rubber particles, 0.5%-1.5% of polypropylene fibers, 3%-8% of coal ash and 20%-28% of mineral admixture, wherein the mineral admixture is mineral powder or mineral slag powder, and zinc stearate on the surfaces of the rubber particles and the rubber powder is removed through strong base solution. The preparation process of the flexible material comprises the following steps of: firstly preparing the rubber powder and the rubber particles, and secondly uniformly mixing. The application of the flexible material is as follows: a part of fine aggregate of common concrete is replaced by the flexible material to prepare semi-rigid concrete by adopting an equal mass replacement method. The preparation process is simple in steps, simple and convenient to operate, low in input cost and good in use effect. The semi-rigid concrete prepared by the flexible material can make up defects of small deformation, large fragility, low tensile strength, and the like of the existing common concrete.
Owner:THE FOURTH ENG CO LTD OF CHINA RAILWAYNO 20 BUREAU GRP
Agent for forming electrode protection film
InactiveCN104364948AImprove long-term stabilityImprove charge-discharge cycle performanceHybrid capacitor electrolytesOrganic chemistryElectrolytic agentPolymer science
The purpose of the present invention is to provide an electrode or electrolyte solution for electrochemical devices, which has excellent long-term stability and can be used in a wide temperature range. An agent for forming an electrode protection film, which contains a compound that has a urethane bond and a polymerizable unsaturated bond and that is preferably represented by general formula (1). (In formula (1), A represents (i) an n-valent hydrocarbon group having 2-42 carbon atoms, (ii) a trivalent residue that is obtained by removing three isocyanate groups from a trimer of a diisocyanate (B) having 2-42 carbon atoms or (iii) a divalent residue that is obtained by removing two isocyanate groups from a urethane prepolymer having isocyanate groups at both ends, said urethane prepolymer being a reaction product of a diisocyanate (B) having 2-42 carbon atoms and a diol (N) having 2-20 carbon atoms; X represents a monovalent organic group having a polymerizable unsaturated bond (b) and 3-42 carbon atoms; and n represents an integer of 1-6, and in cases where n is 2 or more, the plurality of X moieties may be the same as or different from each other.) A(-NHCO2-X)n (1)
Owner:SANYO CHEM IND LTD
Magnetic bearing device
InactiveCN101326377AImprove long-term durabilitySmooth rotation at high speedRolling contact bearingsMachines/enginesSupporting systemMagnetic bearing
A magnetic bearing device is provided. The magnetic bearing device is stably controllable with a simplified-structure controller, and a roller bearing and a magnetic bearing are used in combination for the magnetic bearing device. The roller bearing and the magnetic bearing are used in combination in the magnetic bearing device, wherein the roller bearing supports a radial load while the magnetic bearing supports either the axial load or precompression or both. An electromagnet (17) is provided at a spindle housing (14) opposite in non-contact to a flange-like thrust plate (13a) which is fixed perpendicularly and coaxially at a main spindle (13) and which is made of ferromagnetic materials. A sensor (18) is provided to detect an axial direction force to act on the roller bearing and a controller (19) is further provided to control electromagnet (17) in response to an output of the sensor (18). The bearing device has the relationship that a resultant spring-stiffness value formed by the roller bearing and its supporting system is larger than a minus stiffness value of the electromagnet.
Owner:NTN CORP
Method for building integrated cantilever structure composite road adapted for precipitous mountainous area
InactiveCN101215815ASmall footprintReduce disturbanceIn situ pavingsClimate change adaptationRoad surfaceRebar
The invention discloses a construction method of an integral overhanging structure compound road, which is suitable for steep mountainous areas, wherein reinforcement concrete columns and walls are cast along the road in certain interval, overhanging beams are arranged on the columns and are cast into one part with the columns and are fixed with the mountains, longitudinal beams and overhanging beams are cast into one part, a pre-made reinforcement concrete slab is laid on the overhanging part of adjacent overhanging beams and is cast into one part with the overhanging beams, the upper surface of the slab is laid on the road surface, the overhanging mountain slope is laid on the reinforcement concrete road surface to assist setting and construction. The construction process of the invention avoids deep cut and high fill, forms road embankment by using whole-casting retaining walls of columns and walls type within the road bed range which is identified and stabilized, uses the overhanging structure to compensate the width-wanting parts of the road; ensures safety, reliability, endurance, reduces the damage on the natural environment as much as possible, does least disturbance on the existing slopes, sustains the slopes self-stabilization, reduces construction quantity, lowers construction difficulty, saves occupancy area, and has good combined technical, economy and social benefits.
Owner:CHONGQING JIAOTONG UNIVERSITY
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