1649 results about "Two layer" patented technology

A prosthesis has a cylindrical stent, and a cover provided about the outer periphery of the stent. The cover has at least two layers of materials, with at least one layer of material being permeable to drugs. The layers of material can define at least one chamber therebetween, with a drug loaded into the at least one chamber. Alternatively, the drug can be loaded into the material of one or more layers.

A method for utilizing a laser to etch a stratified material is disclosed. The method includes providing a stratified material having at least two layers that are secured together, the layers including a first layer and a second layer. An incision is then formed in the stratified material with a laser, the incision extending through the first layer to expose the second layer. The stratified material may then be incorporated into an upper of the article of footwear, for example. By exposing portions of the second layer, properties of the second layer may be exposed in the area of the removed first layer.

An absorbent article that has a thin, conformable absorbent core where the core has at least two layers, each including a different superabsorbent material, and each being typically substantially free of cellulosic fibres, is described. The absorbent article has a Circular Bend Flexibility of less than about 15 N. The core includes a storage layer and an acquisition/storage layer each a specific basis capacity of and absorption efficiency.

The invention relates an electromagnetic shielding optical window with a two-double cirque metal grating structure, which belongs to the optical transparent piece electromagnetic shielding technical field; the electromagnetic shielding optical window is formed by loading two layers of cirque metal gratings on two sides of the optical window; each layer of cirque metal grating is formed by closely connecting and distributing metal cirque units in a two-dimensional orthogonal arrangement mode; an outside diameter of a cirque of the two layers of cirque metal gratings is greater than pi/2 times of a side length of a pane of the prior monolayer pane metal grating; the space between two layers of circular metal gratings is two to four times of the outside diameter of the cirque; compared with the prior monolayer pane metal grating, the optical window with the two-double circular metal grating does not reduce light transmittance, substantially improves shielding efficiency, homogenizes high-level energy diffracting distribution and solves the problems that the influences of high light transmittance, strong electromagnetic shielding efficiency and low imaging quality can not simultaneously considered in the prior optical window electromagnetic shielding technology.

The invention relates to a multi-layer collagen article useful for wound healing, comprising at least two layers; wherein at least one layer, facing the wound side, is comprising an effective amount of non or partially cross-linked collagen; and at least one layer comprising an effective amount of highly cross-linked collagen matrices. The invention also relates to a method for the production of collagen article.

The invention is directed toward a composite material for use in a medical application, comprising a biological material and a reinforcement material. The biological material may be overlayed onto the reinforcement layer, or the material may be attached together. In one embodiment, the composite material may be arranged in layers, such that the biological material is in a first layer and the reinforcement material is in a second layer. In another embodiment, the reinforcement material may be in a layer sandwiched between two layers of biological material. In a certain embodiment, the reinforcement material is in the form of a mesh.

One aspect of the invention relates to a symmetrical transformer with a stacked coil structure comprising two coils each having at least two turns, said coils being located in two conductive planes. The structure comprises four identical basic elements, each basic element providing a conductive path for part of said coils. The terminals of the transformer are located at opposite sites of the structure so that the structure can be easily connected in a chain.

The invention also relates to a semiconductor device comprising such a structure.

A sock with zones of varying numbers of layers is formed as a single tube on a circular knitting machine. At least one end of the tube is doubled back over a portion of the remainder of the tube to form a double layer first zone. The sock further includes a single layer zone adjacent to the double layer first zone, where no such folding occurs. Optionally, a second end of the tube may also be folded to create a third zone having two layers of material.

A woven preform for a reinforces composite material, which may be woven flat and folded into a shape. The preform has a three-dimensional weave architecture with fill fibers woven to provide layer-to-layer interlocking of layers of warp fiber as well as interlocking of fibers within each layer. At least two legs extend from a base, the base and legs each having at least two layers of warp fibers. The legs can be connected at a symmetrical or asymmetrical, distributed-column intersection, with an even or odd number of columns of warp fibers being located between the legs. The outer ends of the base and/or legs preferably have tapers formed from terminating layers of warp fibers in a stepped pattern.

A wound dressing that includes two layers for a two part solution to the needs of a healing skin wound. The first step involves a relatively closed system wherein moisture is kept near the skin to promote healing. The second step allows for removal of a top layer of the dressing to reveal a layer with a series of apertures that allows for 100% moisture vapor and oxygen transmission rates to avoid irritation and itching of the skin. At the same time, the bottom layer of the wound dressing maintains a significant outer perimeter that prevents the perimeter migration of microorganisms into the healing wound. The wound dressing can also be used as a means for securing medical instruments, such as intravenous catheters, to the skin of a patient while avoiding the itching and irritation associated with traditional methods.

The invention discloses a dry-hanging curtain wall for thermal insulation and decoration and an installation technique thereof, which essentially comprises a 'duplex F' shape installation hanging part; the radial frameworks and the zonal frameworks of the 'duplex F' shape installation hanging part are vertically arranged; a first layer of the radial frameworks with two or more than two layers is level to the zonal frameworks and the radial framework at the last layer is at a certain distance from the tail end of the zonal framework; the width and thickness of the radial frameworks at every layer can be equal or not. Insulation boards can be fixed in a point-typed installation and location method by the installation hanging part, thus overcoming the defects of the prior art, providing an installation technique of the thermal insulation and decoration curtain wall without installing the horizontal and the vertical joist, simplifying the installation procedure, saving the installation raw materials and cost and overcoming the defect that the rain leakage is easy to happen in the splicing seam of the insulation board adopting the traditional method.

The present invention is directed to an improved multi-layered core golf ball wherein each core layer comprises its own specific hardness gradient (positive, negative or a combination) in addition to an overall specific hardness gradient from one core layer to the next. In a first embodiment, the golf ball comprises a two layer core and a cover disposed about the two layer core. The two layer core comprises an inner core layer and an outer core layer disposed about the inner core layer. The inner core layer comprises a geometric center and a first outer surface. The inner core layer is formed from a substantially homogenous formulation, comprises a diameter of about 30 mm or lower, and has a plurality of hardnesses of from about 60 Shore C to about 85 Shore C. The geometric center comprises a first hardness and the first outer surface comprises a second hardness wherein the second hardness is greater than the first hardness to define a positive hardness gradient of from about 5 Shore C to about 20 Shore C. The outer core layer comprises an inner surface and a second outer surface. The outer core layer is formed from a substantially homogenous formulation, comprises a thickness of about 10 mm or lower, and has a plurality of hardnesses of from about 60 Shore C to about 95 Shore C. The inner surface comprises a third hardness and the second outer surface comprises a fourth hardness wherein the fourth hardness is greater than the third hardness to define a positive hardness gradient of about 20 Shore C or lower. The third hardness may be similar to the second hardness. The outer core layer further comprises a fifth hardness disposed between the inner surface and the second outer surface in a region extending between about 10% and about 90% of the distance from the inner surface to the second outer surface, wherein the fifth hardness is greater than the third hardness and the fourth hardness. Alternatively, the region may extend radially from about 13 mm to about 20 mm from the geometric center. Finally, the fourth hardness is greater than the first hardness to define a positive hardness gradient of about 30 Shore C or lower. In a second embodiment, the outer core layer differs from that of the first embodiment at least in that: the fourth hardness is less than the third hardness to define a negative hardness gradient of about 20 Shore C or lower; the fifth hardness is less than the third hardness and the fourth hardness; and the fourth hardness is greater than the first hardness to define a positive hardness gradient of about 18 Shore C or lower. The present invention is also directed to a golf ball having certain Shore D hardnesses as disclosed herein.

Embodiments of the invention provide a light-emitting device and a preparation method thereof as well as a display device, relating to the field of display technologies and solving a problem of light-emitting color cast due to high-energy exciton transfer in the light-emitting device while reducing the energy consumption of the device. The light-emitting device comprises an anode and a cathode which are opposite, a hole transfer layer close to the anode, an electron transfer layer close to the cathode and a light-emitting function layer arranged between the hole transfer layer and the electron transfer layer, wherein the light-emitting function layer comprises at least two layers of quantum dot light-emitting layers capable of emitting different colors of light and a transparent insulating layer arranged between any two adjacent layers of quantum dot light-emitting layers. The method is used for preparing the light-emitting device and the display device comprising the light-emitting device.

A target, made of two layers, that has an animal design. The animal design on the bottom layer has at least two zones which correspond to a level of effectiveness of a bullet strike within that zone. Each level of effectiveness is indicated by a color and each animal design has at least two levels of effectiveness.

The invention relates to a shaping and trimming method of crowns of pear trees. The crowns are trimmed into a structure of two layers of main branches, wherein each layer of main branches comprises two main branches facing south and north, and lateral branches are left at two sides of the main branches in the horizontal direction. The shaping and trimming method has the advantages of facilitating flower bud differentiation, increasing effective photosynthetic accumulation, enhancing wind resistance, and obviously improving the commodity quality of fruit of a single-layer planar pergola shaping method; moreover, the shaping of the crowns is quick; the cultivation of crown structure can be completed to enter the early fruit period 3 years after the planting in general; the yield of a single plant can be controlled to be 6-10kg, and increases year by year; meanwhile, trimmed crowns do not contain sub-main branches; the trimming method is simple, and is easy to master; the work space of the flower and fruit management of a pear orchard can be controlled; labor and force are saved; the labor efficiency is improved; and the management cost of the orchard is reduced; in addition, the method is suitable for a flat land or a gentle slope landform undulation, and is particularly suitable for a gentle slope with the landform undulation or a slope land with the slope of less than 15 DEG.

The invention relates to a growth factor slow-release type double-layered artificial skin which is used for repairing injured skin with related growth factor slow-release functions and a preparation method thereof. The artificial skin is divided into two layers of an epidermal layer and an enderonic layer, wherein the epidermal layer is constituted by a micropore double-layered thin film with the functions of water proofing, ventilation and enderonic protection; the materials of the upper layer which contacts with air is polyurethane, or silicon rubber, or polyethylene glycol, or ethylene terephthalate and other medical materials; the lower layer which contacts with the dermis is a natural biological macromolecule thin film which is constructed by silk fibroin and chitosan; the enderonic layer of the artificial skin is constituted by collagen, polysaccharide and microspheres carrying growth factors related to skin regeneration and repairing; the microspheres have good slow-release function, and the slow-release period is equal to or slightly longer than the degradation period of the collagen and polysaccharide and can be matched with the skin regeneration and repairing period; and the thickness of the artificial skin is in a range of 0.5-1.5mm and can be regulated according to requirements.

An air ventilation system, comprising an air inlet for admitting contaminated air into the ventilation system, an air outlet for discharging decontaminated air from the ventilation, and an ultra-violet light source disposed therebetween. The ventilation system has a filter disposed upstream of the ultra-violet light source. The filter has a grease particle separator with at least two layers of expanded metal associated therewith. Each has a predetermined number of apertures forming a reticulum. A cartridge filter may be provided for each grease particle separator and disposed upstream thereof. Each cartridge filter and associated grease particle separator preferably forms an integral filtering unit and may be placed at any location of the system.

One or more cutting boards that may be conveniently and compactly stored on many vertical surfaces in the kitchen, for example, a refrigerator. In the preferred embodiment, each cutting board contains two layers, a flexible magnet, and a flexible yet durable cutting surface. One or more of the magnetic cutting boards may be placed on any magnetically attractive surface, whether vertical or horizontal, and will remain in place due to the magnetic attraction between the magnetic cutting board and the magnetically attractive surface.

An optical fiber cable includes a plurality of loose tubes, each of which contain at least one optical fiber therein. The loose tubes are constructed of a polymer with the tubes arranged in at least two layers, each of which are rotated in the same uni-helical direction and are ranged having substantially the same lay length. A jacket encases the loose tubes, where any one of the optical fibers in one of the loose tubes is accessible when the jacket is opened and the at least two layers are untwisted.