252results about How to "Improve foldability" patented technology

A valve prosthesis is sized and configured to rest within a blood path subject to antegrade and retrograde blood flow. A trestle element on the prosthesis extends across the blood path. A leaflet assembly is suspended from the trestle element and extends into the blood path in alignment with blood flow. At least one mobile leaflet member on the leaflet assembly is sized and configured to assume orientations that change according to blood flow direction. The mobile leaflet member has a first orientation that permits antegrade blood flow and a second orientation that resists retrograde blood flow. The valve prosthesis, when implanted in a heart chamber or great vessel, serves to supplement and/or repair and/or replace native one-way heart valve function.

The invention provides a preparation method and application of conductive ink based on metal nanowire and graphene oxide. The graphene oxide is simultaneously used as a dispersing agent, a thickening agent and a stabilizing agent. The metal nanowire, the graphene oxide, the deionized water, the alcohol solvent, the dispersing agent, the surface active agent, the flatting agent and the de-foaming agent are uniformly mixed at a certain mass ratio, so as to acquire the conductive ink product. The acquired ink can be directly written or printed on various substrate materials so as to construct a conductive circuit with high conductivity, stability, flexibility and high adhesion; the constructed conductive circuit is dried for 3-10 minutes under room temperature, so that ultrahigh conductivity is achieved; furthermore, the graphene oxide is reduced and the metal nanowire is sintered according to the methods, such as, selecting sintering temperature at 50-200 DEG C or performing chemical reduction under room temperature or utilizing an xenon flashlight to sinter, so that the conductivity of the conductive circuit is further increased.

A solar generator especially for a spacecraft or space flight body has a plurality of first collector panels hinged to each other in a column extending in a first direction (D1) when the first collector panels are unfolded and a plurality of second panels coupled to the first panels so that the second panels can be unfolded in a second direction (D2) only after the first panels have been unfolded. The second panels are coupled to the first panels by journal struts or by hinges so that at least one first panel forms with at least one second panel, preferably with two or more second panels, a panel packet. The hinges (40) that articulate the first panels to each other permit unfolding the panel packets in said first direction (D1), whereupon the second panels in the individual packets can be unfolded in the second direction (D2).

Reconfigurable containers which may adopt two stable configurations are described. In the first configuration, the container is suitable for the storing and transport of goods. When in a second, collapsed configuration, the container occupies a lesser volume than the first configuration and thus requires less shipping space. This is accomplished through the use of at least one deformable active material member that is preferably a shape memory polymer and, optionally, releasable fasteners.

The application discloses a flexible screen and an electronic device. The flexible screen includes a body portion and a protruding portion integrated to each other; the body portion includes a first fixing region, a folding region and a second fixing region; the folding region is connected between the first fixing region and the second fixing region; the folding region may deform such that the first fixing region and the second fixing region are folded or unfolded relatively; the protruding portion is raised from the non-display side of the folding region. When the flexible screen is applied to the electronic device, the electronic device can prevent the flexible screen from arching in a direction far away from the bottom wall of a housing.

The invention relates to a porous superfine polyamide 6 fully-drawn yarn, a preparation method thereof, and equipment thereof. According to the invention, existing FDY production equipment is adopted. A raw material polyamide 6 is sliced and dried; an additive is added on line; the material is subject to screw extrusion and melt extrusion; the material is then cured with a gradually cooling manner and a circular air blow cooling manner; with a reasonably selected spinning temperature of 259-262 DEG C, an air temperature in the circular air blowing process of 19-23 DEG C, a humidity of 85-95%, an air velocity of 0.35-0.45m/s, an oiling and clustering position of 700-800mm, and a winding speed of 4100-4600m/min, the porous superfine polyamide 6 fully-drawn yarn product with a specification of 55dtex/144f-75dtex/144f is prepared. Flexible operation is adopted in the preparation method. The preparation method is advantaged in simple technology and low production cost. The product is advantaged in stable performance, good yarn evenness, and good coloration property.

The invention, relating to a melt spinning technique of a high-molecular polymer, provides a porous microfine denier polyamide 6 pre-oriented yarn, its preparation method and device. Random copolymer additive of methacrylate, maleic anhydride and styrene are added in the screw melt extrusion step, and the obtained pre-oriented yarn has the breaking tenacity of 3.20-3.70 cN/dex and the breaking elongation of 60-100 %. According to the invention, a routine FDY device and related production technology conditions are improved, the aggregation structure adjustment, high order orientation, and crystalline supramolecular structure in the stretch forming process of a spinneret are effectively controlled, the melt mixing uniformity and pressure stability are further increased, the winding tensile stress and unevenness of the yarn are effectively adjusted and controlled, and the after-stretching performance of the porous microfine denier polyamide 6 pre-oriented yarn is raised. According to the product provided by the invention, the maximum benefits of the enterprise can be achieved.

Disclosed is a polyester yarn, wherein a room-temperature strength-elongation index (X⁰) indicating a ratio (T⁰/S⁰) of tensile strength (T⁰) to tensile elongation (S⁰) of the polyester yarn, measured at room temperature, and a primary high-humidity strength-elongation index (X¹) indicating a ratio (T¹/S¹) of tensile strength (T¹) to tensile elongation (S¹) of the polyester yarn, measured after heat-treating the polyester yarn under conditions of a temperature of 85° C. and a relative humidity (RH) of 95±5% for 168 hours, are optimized in a predetermined range.

A semirigid, collapsible, cinchable utility sack with pockets, wherein the utility sack is of generally cylindrical construction having a cinchable cover, a handle, and pockets disposed on the exterior of the bag. The interior of the utility sack may receive liquids, solids (dry or wet), and/or variously shaped articles, wherein the cinchable cover may thereafter be tightened to secure the materials contained within the utility sack.

The invention provides a folding screen and a display device. Bending areas of the folding screen comprise difficultly-bending areas and easily-bending areas; the total thickness of inorganic membranes of the easily-bending areas is smaller than the total thickness of inorganic membranes of the difficultly-bending areas; and the total thickness of organic membranes of the easily-bending areas is greater than the total thickness of organic membranes of the difficultly-bending areas, so that the easily-bending areas can be easily bent relative to the difficultly-bending areas, therefore, the foldability of a display panel is realized, meanwhile, the folding areas have specificity, namely, the folding movements are completed by the easily-bending areas, the difficultly-bending areas do not realize folding, therefore, during the design of the display screen, damageable parts can be arranged in the difficultly-bending areas with pertinence, then when the display screen is folded, the difficultly-bending areas are non-movement areas, at the time, no damage is caused to the damageable parts, and thus the serve lives of the devices are prolonged. Therefore, with the folding screen disclosed by the embodiment of the invention, a powerful basis is provided for prolonging the service life of the folding display panel.

A collapsible container, particularly a cup or mug having a flexible body having a top tier, middle tier and a bottom tier is disclosed. The bottom tier has a base. The container has a first living hinge between the top and middle tiers and a second living hinge between the middle and bottom tiers. A rigid, preferably metal, plate is at least partially embedded in the bottom tier that makes the otherwise flexible base rigid. The container can have a rigid metal cladding around the top tier and a handle made of flexible material. The collapsible container may be made by injection molding.

The invention relates to a manufacturing method of a foldable paper-based micro supercapacitor and belongs to the technical field of a micro energy storage device. The method comprises steps that a graphene or graphene composite electrode is imprinted onto a paper substrate through utilizing the template imprinting technology, the solid electrolyte is coated to the electrode, and the micro supercapacitor is manufactured on the paper substrate. The sheet-like graphene or graphene composite is imprinted through the template on the paper substrate to make the outline of the electrode clear and connectivity good, porosity and the water absorption property of the paper are utilized to ensure stability of the graphene or graphene composite electrode on the paper, foldability and flexibility of the paper are utilized to make the manufactured micro supercapacitor have good flexibility and foldability, wind energy collection and utilization and output of different voltages and currents can be realized, moreover, the manufacturing process is simple, operability is high, cost is low, and large scale manufacturing is realized.

A foldable and portable music stand (100) comprising: a music platform (102) for placing a music score and a music book; a pole comprising a main pole (106), a second pole (108), and a third pole (110); a foldable arm; and a support stand. The second pole (108) is sleeved in the main pole (106) in a sliding vertical adjustment manner; the third pole (110) is sleeved in the second pole (108) in a sliding vertical adjustment manner; the foldable arm is pivotally disposed at the top of the third pole (110); a locking ring (114) is disposed at the top of the main pole (106), so as to selectively lock the position of the second pole (108); a locking ring (116) is disposed at the top of the second pole (108), so as to selectively lock the position of the third pole (110); the music platform (102) is detachably connected to the foldable arm; a hollow groove is disposed on the surface of the foldable arm opposing the main pole (106); the hollow groove is slightly larger than the main pole (106), so that the main pole (106) can be nested in the hollow groove when the foldable portable music stand (100) is folded; the support stand is a foldable supporting base (118), is connected to a ferrule set (112) disposed at the bottom of the main pole (106) via a hinge, and can pivot between an unfolded position and a position adjacent to the main pole (106).

The invention provides a manufacturing method for a 7000-series aluminum alloy profile for an automobile body. Raw materials comprises the following alloy elements in percentage by mass: 0.119 to 0.138 percent of Si, 0.148 to 0.17 percent of Fe, 0.05 to 0.19 percent of Cu, 004 to 0.10 percent of Mn, 0.72 to 0.99 percent of Mg, 0.05 to 0.10 percent of Cr, 5.55 to 6.0 percent of Zn, 0.15 to 0.22 percent of Zr and 0.02 to 0.04 percent of Ti, wherein the content of a single element is less than or equal to 0.05 percent; the total amount of other elements is less than or equal to 0.15 percent; thebalance is aluminum; the ratio of Zn to Mg is controlled to be 6 to 8; and the processing process comprises the following treatments of smelting, performing purifying treatment, casting into a bar, performing homogenizing annealing, extruding, cooling, drawing, performing natural aging and performing artificial aging. The profile obtained by the manufacturing method provided by the invention has super-high strength mechanical properties and good corrosion resistance, fatigue resistance and crushing resistance, and is very suitable for batch production of parts, such as an aluminum alloy energyabsorption box, a front longitudinal beam, a rear longitudinal beam, a threshold and an automobile door anti-collision beam, used by an automobile bumper system.

The invention relates to an embroidery type full fabric keyboard. The keyboard comprises an upper covering layer, an upper conducting fabric layer, an insulating fabric layer, a lower conducting fabric layer and a lower covering layer which are arranged from top to bottom and all made of nonconductive fabric, wherein key symbols of the keyboard are marked on the upper surface of a key layer; the insulating fabric layer is provided with holes in one-to-one correspondence with the key symbols; a circuit in a line and a circuit in a row are defined by broidering conductive fiber on the upper and lower conductive fabric layers respectively; the insulating fabric layer is provided with corresponding electrodes formed by broidering at the positions corresponding to the holes; and two circuits are connected to a signal interface. Owing to the softness of the fabric, the keyboard can be coiled or folded and washed and realizes portability, foldability and full fabric while ensuring high flexibility and accuracy of the keyboard so as to open the way for the development of the computer worn on a human body.

A heat sealable printing sheet includes a sheet-shaped base member, and an ink receiving layer disposed on a first surface of the base member and having a heat sealability. The heat sealable printing sheet further includes a heat sealable layer disposed on a second surface of the base member and made of a heat sealable resin material. The ink receiving layer contains inorganic fine particles, a water soluble resin, and a water dispersible resin. The water dispersible resin has a glass transition temperature (Tg) satisfying −35° C.≦Tg≦35° C.

To provide resin-coated sand for a multilayer mold in which the consolidation strength of the casting mold obtained by using it and gas permeability thereof are improved at the same time, the amount of occurrence of pyrolytic products (tar, soot and the like) derived from organic substances is effectively inhibited, when molding is performed using such a casting mold, and further, the casting mold after molding can exhibit excellent collapsibility. Disclosed is resin-coated sand for a multilayer mold, in which surfaces of refractory particles are coated with a binder composition containing a phenolic novolak resin having an ortho/para bond ratio of methylene groups of 1.5 or more and an aromatic amine as indispensable constituents, and the grain fineness number is from 80 to 150.