56results about How to "Excessively uniform" patented technology

A space division multiplexed (SDM) transmission system that includes at least two segments of transmission media in which a spatial assignment of the two segments is different is provided. For example, the SDM transmission may include a first segment of transmission media having a first spatial assignment and a second segment of transmission media having a second spatial assignment, wherein the first spatial assignment differs from the second spatial assignment. An example method obtains an optical signal on a first segment of transmission media having a first spatial assignment and forwards the optical signal on a second segment of transmission media with a different spatial assignment. The transmission media may be a multi-core fiber (MCF), a multi-mode fiber (MMF), a few-mode fiber (FMF), or a ribbon cable comprising nominally uncoupled single-mode fiber (SMF).

A method of making and filling a plastic bag includes the steps of providing a bag having a plurality of microperforations; filling the bag with a powdered product; securing the bag; removing at least a portion of entrapped air in the bag through the microperforations; and sealing the microperforations. A product includes a bag configured for being formed from a plastic film into which a plurality of microperforations have been created. The bag contents include less air than that present in the bag when the top and the bottom were secured, at least a portion of the air sealed inside the bag having been expelled through the microperforations. A sealant is used for sealing the microperforations.

An oxide sintered body including In (indium element), Ga (gallium element) and Zn (zinc element), having a total content of In, Ga and Zn relative to total elements except for an oxygen element of 95 at % or more, and including a compound having a bixbyite structure represented by In₂O₃ and a compound having a spinel structure represented by ZnGa₂O₄.

A light emitting diode bulb including a heat sink, a light source plate, a reflective frame and a secondary optical component is provided. The light source plate includes a circuit board disposed on the heat sink and a plurality of light emitting devices disposed on the circuit board. The reflective frame disposed on the light source plate includes a plate portion and a reflective pillar. The plate portion has a plurality of openings exposing the light emitting devices. The secondary optical component has a first optical surface and a second optical surface. An absolute value of the slope of a tangent line of any point on the first optical surface with respect to the heat sink is constant. An absolute value of the slope of a tangent line of any point on the second optical surface is gradually smaller along the direction away from the heat sink.

A thermochemical treatment installation includes a reaction chamber, at least one gas inlet, and a gas preheater chamber situated between the gas inlet and the reaction chamber. The preheater chamber has a plurality of perforated distribution trays held spaced apart one above another. The preheater chamber also includes, between at least the facing distribution trays, a plurality of walls defining flow paths for a gas stream between said trays.

A sling construction is provided that includes an improved support strap for more uniformly distributing the weight of the supported arm of the wearer's shoulder while preventing strap bunching and creep. The strap is preferably formed from an elastomer or a rubber that is relatively compliant yet has a low coefficient of elongation. This allows the strap to be highly supportive of the sling while also conforming to the contour of the wearer's neck and shoulders in a manner that makes the strap and sling comfortable to wear. The inner contact surface of the strap includes nubs or raised features that prevent the strap from sliding. Further, the improved strap support construction may be used in a modular fashion in conjunction with standard sling pouches or with an enhanced sling pouch in order to greatly improve the performance and appearance of the sling.

The present invention refers to a method to provide slots in pipes and, more specifically, to a method to provide slots in metal pipes used to extract oil or to form slotted lines, wherein said slots are specially designed to avoid the intake of impurities while pumping oil. More specifically, the method consists of the following steps: a) external cleaning of the pipe (1) with slag jetting to remove the protecting layer that comes from its manufacture or to remove the impurities due to its oxidation; b) placing the pipe (1) on the receiving table by the set of motors (2) to be subsequently transferred to the cutting table (3), by means of motors (4); c) positioning and fixation of the pipe in the cutting cabin (5) by screwing the pneumatic rotating plate (6); d) execution of the first sequence of slots in the pipe by means of laser or plasma, in a refrigerated environment, by making a first slot with pre-defined power and subsequently the opening of the slot with determined length and thickness, according to the characteristics of the pipe, with said slot having an initial section with parallel shape and subsequently with divergent section; e) angle rotation of the pipe by means of turning the rotating plate (6) to make the second sequence of slots, in the opposite direction of the first sequence and then successively on the whole perimeter of the pipe to meet the desired specification; f) removal of the sludge and impurities generated by the cut by the sleeves (7); g) internal cleaning of the slotted pipe with slag jetting; h) visual inspection of the slotted pipe to correct failures and possible imperfections with MIG soldering; and i) painting to provide a uniform visual aspect to the slotted pipe.

An optical element is provided having an asymmetric body with a base cavity for receiving a light source, and outer sides providing total internal reflection, and a front face tilted so that the optical element's optical axis is at an oblique angle with respect to a target surface. Curvatures along cavity surfaces and outer sides are selected to output illumination from the body's front face having a distribution extending along the target surface's height and at least a portion of the width thereof having increased intensity with increasing height to provide at least substantially uniform illumination along the target surface's height. One or more optical elements may be in an apparatus, and multiple apparatuses may be disposed in front of one edge of a target surface and spaced from each other to provide the target surface with at least substantially uniform oblique illumination.

A method of growing a two-dimensional transition metal dichalcogenide (TMD) thin film and a method of manufacturing a device including the two-dimensional TMD thin film are provided. The method of growing the two-dimensional TMD thin film may include a precursor supply operation and an evacuation operation, which are periodically and repeatedly performed in a reaction chamber provided with a substrate for thin film growth. The precursor supply operation may include supplying two or more kinds of precursors of a TMD material to the reaction chamber. The evacuation operation may include evacuating the two or more kinds of precursors and by-products generated therefrom from the reaction chamber.

The invention discloses a steel gas protection welding wire for railway vehicle welding. The steel gas protection welding wire comprises chemical components, by mass, of 0.04-0.10% of C, 0.35-0.65% of Si, 1.30-1.60% of Mn, 0.020% or less of P, 0.010% or less of S, 0.20-0.50% of Cr, 0.30-0.80% of Ni, 0.19-0.40% of Cu and the balance Fe and inevitable impurities. According to the steel gas protection welding wire, the comprehensive property is good, the tensile strength is 620 MPa or over, impact energy of minus 40 DEG C is 124 J or over, and the anti-corrosion property is outstanding.

A wooden member fabrication method which, by a simple process, can enable greater stability of shape subsequent to processing and uniformity of color tone. A wooden original piece with a long form has a hole thereinside which extends in the length direction. Corner portions are chamfered and radial direction thicknesses are substantially constrained to a certain range. An outer periphery of this wooden original piece is compression-deformed in directions toward an axial central portion and the outer periphery is thus made an arc surface. Because of the chamfering, radial direction thicknesses of the wooden original piece are constrained, and differences by location between compression ratios can be suppressed.