154results about How to "Optimized diameter" patented technology

This invention is a surgical device. In particular, it is a catheter suitable for treating a tissue target within the body, which target is accessible through the vascular system. Central to the invention is the use of stiffener ribbons, typically metallic, wound within the catheter body in such a way as to create a catheter having controllable stiffness.

A dual braided catheter shaft includes a flat wire forming the inner braid, thereby potentially allowing for reduced radial thickness of the shaft. In one embodiment, the shaft (100) includes an inner polymer jacket (104), an inner braid (106) formed on the inner jacket (104), an intermediate jacket (108) formed over the inner braid (106), an outer braid (110) formed on the intermediate jacket (108) and an outer jacket (112) formed on the outer braid (110). A preferred construction process involves extruding polymer material directly onto each of the inner and outer braids (106 and 110) so that little or no air gaps remain between the polymer material and the braids (106 and 110). The braiding parameters of the inner and outer braids (106 and 110) can be varied along the length of the catheter to provide varying mechanical properties.

A method of manufacturing a semiconductor memory device includes forming a carbon-containing layer on a semiconductor substrate, forming an insulating layer pattern on the carbon-containing layer, the insulating layer pattern partially exposing an upper surface of the carbon-containing layer, dry-etching the exposed portion of the carbon-containing layer, to form a carbon-containing layer pattern for defining a storage node hole, forming a bottom electrode inside the storage node hole, forming a dielectric layer on the bottom electrode inside the storage node hole, the dielectric layer covering the bottom electrode, and forming an upper electrode on the dielectric layer inside the storage node hole, the upper electrode covering the dielectric layer.

A rotary cutting tool that is composed of a tool shank with at least one chucking groove or chip flute and one exchangeable cutting insert. At the tip of the shank a recess for accommodating the cutting insert is provided. The tool shank, on its circumference, has a limb with a bearing surface that is inclined relative to the tool axis and that corresponds to a likewise inclined bearing surface on a wing of the cutting insert. The inclination of the bearing surfaces produces an axial force that retains the cutting insert on the tool shank. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

An ion source apparatus includes a rare gas supply source supplying rare gas instead of ion source gas to a plasma chamber, means to determine time and timing for cleaning electrodes in consideration of a collecting amount of insulation layers accreting to the electrodes of an extraction electrode system. Based on the above, the ion source apparatus removes the insulation layers by sputtering with ion beam of the rare gas while adjusting extraction or accelerate voltage and supply amount of the rare gas as a setting parameter. Moreover, by adjusting the setting parameter which changes a diameter of ion beam based on the rare gas when the ion beam collides onto each electrode surface of the extraction electrode system, the beam diameter is focused within an effective range in which intension of the sputtering of the insulation layers is maximized thus evenly removing the insulation layers.

The present invention relates to a synthetic method of graphitic carbon nitride material. The method involves a homogenous mixing of carbon nitride precursor and ammonium salt, and calcining the mixture to obtain a porous graphitic carbon nitride material. Wherein, the ammonium salt is any one or a combination of at least two which could release gaseous NH₃ during thermolysis. The present invention uses thermolabile ammonium salt as a pore former; the thermolysis of ammonium salt could release soft gas bubbles during the calcination; the later burst of bubbles leads to the formation of nanoporous structure. The proposed method is template-free and environmentally-friendly, and the resultant material exhibits high photocatalytic activity in the field of gas and water decontamination.

Disclosed is a conductive paste composition for low temperature firing, including conductive copper powder composed of flake powder, spherical powder and nano powder, a melamine-based binder, and an organic solvent, thus enabling the formation of a conductive wire having a high aspect ratio with high printability, and inexpensive formation of a metal wire, and exhibiting superior electrical properties and adhesive force even when conducting low temperature firing at 200° C. or less, so that the conductive paste composition can be usefully applied as a conductive material for forming electrodes of a variety of products such as solar cells, touch panels, printed circuit boards (PCBs), radio-frequency identification (RFID), plasma display panels (PDPs) and so on.

A device and method for improving the performance of a pulse detonation engine. The device includes at least one of an exhaust structure and an ejector. The exhaust structure can be configured as a straight, converging or diverging nozzle device, and connected to the engine to control the flow of a primary fluid produced during a detonation reaction. The ejector is fluidly coupled to the engine, using the movement of the primary fluid to promote entrainment of a secondary fluid that can be mixed with the primary fluid. The secondary fluid can be used to increase the mass flow of the primary fluid to increase thrust, as well as be used to cool engine components. Device positioning, sizing, shaping and integration with other engine operating parameters, such as fill fraction, choice of fuel and equivalence ratio, can be used to improve engine performance. In addition to thrust augmentation and enhanced cooling, the disclosed device can be used for engine noise reduction.

A plasma torch includes a torch main unit and a nozzle. The torch main unit has a nozzle seat member on which the nozzle is mounted. The nozzle is arranged to move toward or away from the nozzle seat member in a direction substantially parallel to a center axis of the nozzle when the nozzle is mounted on or removed from the nozzle seat member. The nozzle has an electroconductive surface facing the nozzle seat member. The torch main unit has an elastic electric contact portion contacting with the electroconductive surface of the nozzle to form an electroconductive path for a pilot arc to the nozzle. The electroconductive surface of the nozzle presses the electric contact portion in the direction substantially parallel to the center axis when the nozzle is moved toward the nozzle seat member to mount the nozzle on the nozzle seat member.

The present invention relate to a binderless molecular sieve catalyst and a process for preparing the same, which are mainly useful for solving the problems of the current catalysts, such as lower activity, less pore volume and worse diffusivity. The present invention relates to a novel binderless molecular sieve catalyst, comprising, based on the weight of the catalyst, 90-100 wt. % of a molecular sieve, 0-10 wt. % of a binder, and 0-10 wt. % of an anti-wear agent, wherein said catalyst has a pore volume of 0.1-0.5 ml/g, an average pore diameter of 50-100 nm, and a porosity of 20-40%; the anti-wear agent is selected from the rod or needle-like inorganic materials having a length/diameter ratio of 2-20. Said catalyst has the advantages of higher activity, greater pore volume, larger average pore diameter and porosity, and better diffusivity, and well solves said problems and can be used for the industrial preparation of binderless molecular sieve catalysts.

A perpendicular magnetic recording medium exhibits reduced noise and improved performance in such measures as SN ratio, and can realize high magnetic recording densities. In the perpendicular magnetic recording medium, at least a first nonmagnetic intermediate layer, second nonmagnetic intermediate layer, and magnetic recording layer are stacked in order on a nonmagnetic substrate. The first nonmagnetic intermediate layer is formed from a CoCrRuW alloy, and the second nonmagnetic intermediate layer is formed from an Ru-base alloy.

A tubular assembly 10 is disclosed for passing fluids within a hydrocarbon recovery well. The tubular assembly 10 has an insulated connection 12 between insulated tubing segments 14, 16. Tubing segments 14, 16 are connected via a threaded connection, and the resulting joint 10 is insulated by an external insulating sleeve 18. The insulating sleeve 18 may have unitary construction, such that the sleeve 18 may only be installed or removed by first breaking apart the joint 10. Alternatively, the sleeve 18 may comprise a plurality of arcuate partial-sleeves, which may be assembled about or removed from the completed joint 10 without first breaking apart the joint 10.

Applicators configured to dispense a hollow or shaped filament and methods of dispensing in which the hollow or shaped filament is impinged with gas jets. The applicator includes a dispenser body configured to discharge the hollow or shaped filament and a plurality of gas outlets arranged to impinge the filament in the space between the dispenser and the substrate.

The invention provides a tower crane. The tower crane comprises a climbing frame and jacking system (100), wherein the climbing frame and jacking system (100) comprises a climbing frame (110) and a jacking system for jacking the climbing frame (110); the jacking system comprises an upper cross beam (140) connected with the climbing frame (110), a jacking cross beam (130) supported on a standard section (2) and a hydraulic system; the hydraulic system comprises a plurality of jacking oil cylinders (120) supported between the upper cross beam (140) and the jacking cross beam (130); the jacking oil cylinders (120) are arranged on the side face, which is positioned on the balance arm side, of the climbing frame (110) and two side faces, which are adjacent to the first side face, of the climbing frame (110) respectively; and more than two jacking oil cylinders (120) are arranged on at least one of the three side faces. According to the tower crane, an upward rotary self-lifting structure is adopted in a super-huge type tower crane, so that the maximum lifting height of the super-huge type tower crane is increased.

The invention relates to a method for preparing polyvinyl acetate zirconyl precursor sol spinning solution and sub-micron zirconium oxide crystal fibers. The method mainly includes dissolving basic zirconium carbonate, glacial acetic acid, yttrium nitrate hexahydrate and spinning auxiliaries in absolute methanol according to certain proportions to obtain mixed solution and concentrating the mixed solution under reduced pressures at the temperatures of 30-40 DEG C to obtain the colorless, transparent and homogenous polyvinyl acetate zirconyl precursor sol spinning solution; acquiring polyvinyl acetate zirconyl precursor fibers by the aid of electrostatic spinning processes; carrying out pressure resolution on the precursor fibers to remove a ligand which is acetic acid, and then carrying out high-temperature treatment on the precursor fibers in a program-control sintering furnace. The method has the advantages that the diameters of the sub-micron zirconium oxide crystal fibers obtained byte ha id of the method range from 100 nanometers to 2.5 micrometers, and the sub-micron zirconium oxide crystal fibers are excellent in continuity, flexibility and heat-insulation and mechanical properties; the polyvinyl acetate zirconyl precursor sol spinning solution and the sub-micron zirconium oxide crystal fibers can be used at ultrahigh temperatures higher than or equal to 1800 DEG C for a long term.

The invention relates to a device for conveying material, especially conveying and/or distributing loose material by a horizontal impeller feeder. The horizontal impeller feeder comprises an impeller (1) arranged in an impeller shell (2) capable of rotating along a vertical rotary axle, wherein the material to be conveyed by the horizontal impeller feeder is guided into the impeller from the impeller shell and the material is conveyed along the horizontal direction in the impeller shell and guided out downwards from the impeller shell and the impeller shell (2) is arranged between a top plate(3) and a bottom plate (4) and composed of at least two feed ports (11) for guiding the material to be conveyed on the top plate and at least two discharge ports (12) for guiding out the material to be conveyed on the bottom plate.

A valve for controlling fluids is embodied with a piezoelectric actuator (3) for actuating a valve member (2) that on one end has a valve head (7), forming a valve closing member, that cooperates with a seat (8) provided on the valve body (6) for opening and closing the valve (1). On a side of the piezoelectric actuator (3) remote from the valve member (2), a hydraulic chamber (21) is provided, which communicates, via at least one hydraulic line (23), with a bore (5) of the valve member (2) that is sealed from the piezoelectric actuator (3), and into which bore a piston (20) connected to the piezoelectric actuator (3) can plunge; the hydraulic chamber (21) is embodied as a hydraulic spring, which with its spring force on the piston (20) connected to the piezoelectric actuator (3) act as the prestressing element and the tolerance compensating element. The valve is intended in particular as a component of a fuel injection valve.

Vent valve for venting bores of vulcanization moulds, especially for the tread profile area, consisting of a valve sleeve (5), in which a valve insert (4) and a wound spring (6) are movably located, wherein the valve insert (4) consists of a valve shank (4-3), which is at one end equipped with a disk (4-1) and at the other end with a conical surface (4-2) changing into backwards oriented conical end, and the movement of the valve insert (4) is controlled by a delimiter of opening the valve. Inner surface of the valve sleeve (5) is in its part (5-4) located further away from disk (4-1) provided with conical surface (5-2), away from the disk (4-1), and the delimiter of opening the valve is formed by two mutually cooperating conical surfaces (4-2, 5-2) or parts of conical surfaces (4-2, 5-2), wherein the conical surface (4-2) formed at the end of the valve shank (4-3) of the valve insert (4) is oriented against the conical surface (5-2) or part of conical surface (5-2) of the valve sleeve (5).

The present invention relates to a portable measuring instrument, comprising: a main body including a pair of measuring holders and a pair of handles, wherein the measuring holders have respective tips which are brought closer to one another or are spaced apart from one another, the measuring holders face each other to accommodate or release an object to be measured, and the handles enable the measuring holders to be spaced apart from one another; a rotating shaft which couples the measuring holders together such that the measuring holders are rotatable; and a measuring tape which passes through the tips of the respective measuring holders such that the measuring tape is wound/unwound onto/from the main body, wherein the measuring tape is coiled along the circumference of the object to be measured when the measuring holders are brought closer to one another or are spaced apart from one another, so as to measure the size of the object to be measured. Accordingly, a worker may measure the diameter of the object to be measured in a convenient manner using one hand, and the time required for the measurement can be shortened.

A compact and light-weighted projection lens system that is capable of projecting an image at an angle as wide as 75 degrees with sufficient field angle and brightness as represented by F number of approximately 2.4, that is capable of effectively correcting chroic aberration of magnification and aberration of distortion and exhibiting optical stability against environmental variations, and that is suitable for obtaining an extraordinarily fine image by the magnification and projection. In the projection lens system that comprises first to third groups of lenses in the order from the closest a magnified image where the first lens group of negative refractive power includes one or more aspherical lenses each having an aspherical plane on one or both of the surfaces, the second lens group of positive refractive power includes one or more positive lenses, and third lens group of positive refractive power includes one or more cemented triplet lenses comprised of three lenses of positive, negative, and positive attributes joined in this order, a projection lens system is characterized by terms and conditions defined as in the following formulae:

0.9<|f1|/f<1.4  (1)

2.1<f2/f<3.4  (2)

1.9<f3/f<2.8  (3)

where f is a total focal length throughout the projecting lens system, f1 is a focal length of the first group of lenses, f2 is a focal length of the second group of lenses, and f3 is a focal length of the third group of lenses.

The invention belongs to an edible fungi intensive cultivating technique and a device. The device consists of a cover, side boards, a fastener and a bottom board; the edible fungi intensive cultivating technique comprises the following steps of: preparing materials and packing, sterilizing, inoculating, sealing the cover, cultivating, fruiting and managing. The invention can fully use the scientific cultivating technique and a reasonable combining mode to quickly assemble and disassemble and become a flat board after being disassembled, which is convenient for cleaning and holding; the four side boards and the cover are all provided with a mushroom outlet; the diameters and the arrangement densities of the mushroom outlets are more scientific and reasonable, which can avoid bunch-growing and clustered mushroom; the mushroom shapes are round with high quality; and the flushes are centralized and are convenient for management. The invention has the advantages of scientific and reasonable cultivating technique, low cost, convenient operation, low consumption and high efficiency, and is applicable to scale production of edible fungi (mushroom, oyster mushroom, plelmtus eqngiu , shiitake, and the like).