237results about How to "Improve structural properties" patented technology

A lightweight, high-strength support platform for use in furniture construction, which has superior structural integrity and can be used, by way of example, in portable folding tables, in work tables and in modular furniture of the character typically used in modern office complexes. The support platform embodies a novel structural reinforcement core, and exhibits superior strength characteristics. In one form of the invention, the support platform is used in the construction of a lightweight, readily portable folding table which includes two pair of legs that are pivotally connected to the platform for pivotal movement between an extended operational position and a retracted storage and transport position.

The present invention relates to a method and apparatus for channel temporal correlation estimation and MIMO mode selection. An embodiment of the invention under LTE system utilizes SRS symbols for temporal correlation estimation and performs MIMO mode selection based on the said temporal correlation estimation.

A fencing system is provided that is constructed from durable polymer components that are sufficiently rigid and durable while providing an integrated modular assembly that is easy to assembly and well suited to a do-it-yourself marketplace. In particular, the modular fence is an integrated system of interfitting vinyl components and a unique polycarbonate or ABS clip for interconnection thereof. The fence includes vertical posts with horizontal members extending therebetween. The horizontal members include grooves therein to support fence panels in the form of web panels. The horizontal members are connected to the vertical members utilizing a novel and uniquely configured connector element.

The invention relates to a coating method capable of improving a laser induced damage threshold of a high-reflectivity film and belongs to the field of film optics. The coating method mainly aims at two key factors of absorption and defects influencing a laser induced damage threshold of a high-reflectivity laser film, and after electron beam evaporation coating of each film layer is finished, utilizes high-energy ion beams to bombard the film layer. The coating method retains unique and beneficial performances of a laser film coated by electron beam thermal evaporation, improves intrinsic absorption and defect density of a film, greatly improves a laser induced damage threshold of a high-reflectivity film, and has the characteristics of strong pertinence, high coating quality, simpleness and good feasibility.

The invention discloses a group of large-thickness blunt-trailing-edge wind-power airfoil profiles and a design method thereof. The airfoil profiles have high lift coefficients under operation angles of attack. The airfoil profile group includes four airfoil profiles with relative thicknesses of 45%, 50%, 55% and 60% in sequence and with trailing edge thicknesses of 7%, 9%, 12% and 16% in sequence. Variable working condition design is adopted by the airfoil profile group, design Reynolds numbers of the four airfoil profiles are 4.0*106, 3.5*106, 3.0*106 and 2.5*106 in sequence according to the relative thicknesses, and the design objective mainly aims to take stability, changed along with the Reynolds numbers, of the lift coefficients as main constraint according to change features of the lifting coefficients within the range of large angles of attack in vane root areas. Numerical prediction results indicate that when the four large-thickness blunt-trailing-edge airfoil profiles are in the range of large angles of attack, the lift coefficients ascend continuously and stably and are in a high level. By the airfoil profile group, vane structural strength and stiffness can be improved, and a wind turbine can have high-efficient and stable output.

The invention discloses a recycling method of a positive electrode piece of a lithium ion battery, aiming at solving the problem of recycling of a nickel cobalt lithium manganite (nickel cobalt lithium aluminate) positive electrode piece and a lithium cobaltate positive electrode piece generated in a production process of the lithium ion battery. According to the technical scheme disclosed by the invention, the recycling method comprises the following steps: 1, crushing the electrode pieces by classes; 2, immersing with an organic solvent; 3, carrying out stirring treatment; 4, filtering with a sieve net; 5, carrying out centrifugal separation; 6, immersing with an alkaline solution; 7, carrying out the centrifugal separation again; 8, drying and removing iron; 9, carrying out ICP (Inductively Coupled Plasma) analysis; and 10, calcining the materials. The recycling method disclosed by the invention can be used for effectively recycling waste materials of the positive electrode pieces of the waste lithium ion batteries, so that the cost is saved; and by immersing with the alkaline solution and carrying out a plurality of times of separation and washing, impurities, such as metal aluminum, in powder grains can be effectively removed. With the adoption of the recycling method, a positive electrode material and an aluminum foil can be completely separated, and the positive electrode material keeps a relatively good structure and electrochemical properties; and the synthesis of a precursor is not needed and the adding amount of a lithium salt is relatively less.

A backed paneling unit comprised of a backing portion that includes at least one of a depth portion and an elevated portion. An elevated portion and/or a depth portion may be formed using any suitable method including, but not limited to, molding, machining and heat stamping. Optionally, a backing portion may comprise a hydrophobic material. Such features may enable fluid flow (e.g., ventilation or liquid drainage) behind the backing portion.

A backed paneling unit comprised of a backing portion that includes at least one rib. In an exemplary embodiment, a rib may be adjacent to a drainage groove or between adjacent drainage grooves. A rib may enable ventilation behind the backing portion. In addition, a rib may also assist with liquid drainage.

A lid for a cup includes an annular wall with a top rim and a bottom base. The annular wall is insertable into a cup wherein an exterior face of the annular wall produces a compressive force against an interior face of the cup sufficient to create a seal along a continuous path circumscribing the interior face of the annular wall of the cup.

This invention relates to methods for making high strength friction stir welded joints. Broadly the invention provides for a method for making a friction stir welded joint including the steps of applying an adhesive to one surface of a first material to be welded; applying a second material to be welded to the adhesive the first material; curing the adhesive; and forming a friction stir weld joint through the cured adhesive by friction stir welding.

Aspects of the present disclosure relate to. In one example, a method of controlling an additive manufacturing machine includes: measuring a first temperature of a part being processed by the additive manufacturing machine; determining that the first measured temperature exceeds a temperature threshold; activating an auxiliary gas flow; cooling the auxiliary gas flow with a cooling system; and directing the cooled auxiliary gas flow towards the part.

The invention discloses an enamel steel sheet for direct glazing, which comprises the following chemical elements in percentage by mass: 0.0005-0.002% of C, 0.24-0.50% of Mn, 0.021-0.035% of S, 0.025-0.055% of O, at most 0.010% of Si, at most 0.015% of P, at most 0.010% of Al, at most 0.003% of N, and the balance of Fe and other inevitable impurities, wherein 0<=Mn-1.7*O+3.4*S<=0.30%, and 2.7*O+4.4*S>=0.14%. The invention also discloses a manufacturing method of the enamel steel sheet for direct glazing, which comprises the following steps: (1) molten iron pretreatment; (2) smelting and refining; (3) casting; and (4) hot rolling. The enamel steel sheet for direct glazing has excellent surface characteristics and favorable inherent quality.

A support structure is provided for supporting a plurality of cylindrical objects. The support structure includes an elongated member having first and second sides and first and second edges. First and second rib sections extend from the first side of the elongated member. The rib sections are generally parallel to each other and are spaced from corresponding edges of the elongated member. Each rib section includes an alternating series of arches and depressions.

The invention discloses a hard carbon negative electrode material, a lithium ion battery and a preparation method and application of the hard carbon negative electrode material. The preparation method comprises the following steps: (1) carrying out cross-linking reaction on carbon source precursor powder and an additive to prepare a modified carbon source precursor, wherein the additive comprises a cross-linking agent, a modifier and a dispersing aid; (2) sequentially carrying out heat treatment and cooling on the modified carbon source precursor, and mixing the modified carbon source precursor with a lithium-rich agent to prepare a modified hard carbon precursor; and (3) carrying out vacuum carbonization on the modified hard carbon precursor to obtain the hard carbon negative electrode material. The hard carbon negative electrode material prepared by the method belongs to typical amorphous carbon and is high in pyrolysis yield, and the lithium ion battery prepared by taking the hard carbon negative electrode material as the negative electrode material is high in first reversible capacity, high in first coulombic efficiency, stable in property and good in batch consistency.

Various metal framing members enhance thermally insulative characteristics of a wall. Framing members include a metal stud with a web portion having through-holes that include at least one piece of retained material. Each of the through-holes lengthens or disrupts thermally conductive paths across the framing member, forming convoluted or serpentine thermal paths. The through-holes are arranged in a pattern that defines a truss structure that includes a number of straight-line web sections that extend uninterruptedly diagonally across a width of the web portion. Framing members include tracks, to hold metal studs, each with a web portion with through-holes that lengthen or disrupt thermally conductive paths. The framing members may be the result of a continuous manufacturing processing, formed of a unitary singular piece of material (e.g., galvanized metal). Thermally insulative gaskets or membranes may insulate the tracks from adjacent structure or surfaces. Structures may be provided as a kit.

This invention describes a guidewire placement device for facilitating the delivery of multiple guidewires to the branches of a tubular system. The invention also includes a method for placing guidewires in the branches of a tubular system using a device in accordance with the present invention, while mitigating guidewire entanglement. The present invention may be utilized during percutaneous treatment of vascular and non-vascular disease, and in particular to complement the use of balloon angioplasty and the deployment of balloon-expanded or self-expanding stents into a bifurcated vessel system.

The invention discloses a graphene film-in-situ-coated lithium iron phosphate positive electrode material and a preparation method therefor. A lithium source, an iron source, a chelated phosphorus source and graphene oxide are used as raw materials to prepare precursor powder by a hydrothermal reaction; and then the obtained precursor powder is sintered under atmosphere protection to obtain the in-situ grown graphene film-coated nanometer graphene film/lithium iron phosphate material with a core-shell structural characteristic. In addition, the invention also provides an application of the nanometer graphene film/lithium iron phosphate composite material prepared by the preparation method in a positive electrode of a lithium ion battery. In the product prepared by the preparation method, graphene is grown on and coats the surface of the lithium iron phosphate in an in-situ manner to form the graphene film/lithium iron phosphate positive electrode material, with an in-situ synthesis reaction, a nanometer effect and the core/shell structure characteristic, for the lithium ion battery; by virtue of the positive electrode material, the energy density, the high-rate charge-discharge characteristics and the cycling performance of the lithium ion battery are improved; and meanwhile, the adopted raw materials are low in cost and the process route is simple, so that the lithium iron phosphate positive electrode material is suitable for large-scale industrial production and application.