583 results about "Lath" patented technology

A self-supporting construction element (1, 101) of expanded plastics, in particular for manufacturing floor elements and walls of buildings in general comprises: (1) a central body (2), substantially parallelepipedic in shape and having two opposite faces (6, 7); at least one reinforcing section bar (8,9) transversally extending across the central body (2) between the faces (6,7) thereof and embedded in the expanded plastics; a lath (16) for supporting at least one layer (17) of a suitable covering material, associated to a fin (11,12) of the reinforcing section bar (8,9) lying flush with and substantially parallel to at least one of the faces (6,7) of the construction element (1,101).

A two-part, blow-molded plastic pallet includes slats which lock onto support stringers by sliding, dovetail engagement. The upper and lower surfaces of the stringer are flat to enhance load distribution. A vertical staking through the slat at a plurality of locations affords structural rigidity.

The present invention relates to a building block of ecological slope protection vegetation, a fabrication method and a construction technique. The building block is composed of a growing bed body, a lath crib, planting troughs, a vegetation layer and a plant, the lath crib wraps the circumference of the growing bed body, the upper plane of the growing bed body is lower than the upper plane of the lath crib and concave, the vegetation layer is formed on the growing bed body, which matches the inner walls of the sectional area of the lath crib to form an integral building block, and more than one planting troughs are arranged on and run through the growing bed body. The design of the present invention is scientific, the structure is reasonable, the restoration of water ecology can reduce the operating cost, environment is improved, ecology is reinstated, harmonious natural beauty is enhanced, and the present invention is suitable for the nidification of small living creatures and the habitation and the survival of aquatic fishes, so that the cutting-off continuity of water and land regions is restored. The present invention is widely applied to channel slope protection, levee slopes, roadsides, airports, parks, public lands, household lawns, sports grounds, etc. The present invention is suitable for cold regions, damp regions, warm and damp intermediate zone, etc.

Alloy steels that combine high strength and toughness with high corrosion resistance are achieved by a dislocated lath microstructure, in which dislocated martensite laths that are substantially free of twinning alternate with thin films of retained austenite, with an absence of autotempered carbides, nitrides and carbonitrides in both the dislocated martensite laths and the retained austenite films. This microstructure is achieved by selecting an alloy composition whose martensite start temperature is 350° C. or greater, and by selecting a cooling regime from the austenite phase through the martensite transition region that avoids regions in which autotempering occurs.

To provide an electric storage device whose negative electrode can be doped with lithium ions in a short time and whose resistance can be lowered. An electric storage device including a unit that is obtained by alternately stacking a positive-electrode sheet 9 and a negative-electrode sheet 10 with a separator 3 interposed therebetween, the positive electrode sheet 9 including a positive-electrode active material layer 1 and a positive-electrode charge collector 4, and the negative electrode sheet 10 including a negative-electrode active material layer 2 and a negative-electrode charge collector 5, in which a foil, an etching foil, or a porous lath foil is used as the positive-electrode charge collector 4 and the negative-electrode charge collector 5, a cut is made in a coating area of the positive-electrode active material layer 1 and the negative-electrode active material layer 2, and a lithium supply source is disposed so as to be opposed to the negative electrode sheet 10 of the unit.

A nanocarbide precipitation strengthened ultrahigh-strength, corrosion resistant, structural steel possesses a combination of strength and corrosion resistance comprising in combination, by weight, about: 0.1 to 0.3% carbon (C), 8 to 17% cobalt (Co), 0 to 10% nickel (Ni), 6 to 12% chromium (Cr), less than 1% silicon (Si), less than 0.5% manganese (Mn), and less than 0.15% copper (Cu), with additives selected from the group comprising about: less than 3% molybdenum (Mo), less than 0.3% niobium (Nb), less than 0.8% vanadium (V), less than 0.2% tantalum (Ta), less than 3% tungsten (W), and combinations thereof, with additional additives selected from the group comprising about: less than 0.2% titanium (Ti), less than 0.2% lanthanum (La) or other rare earth elements, less than 0.15% zirconium (Zr), less than 0.005% boron (B), and combinations thereof, impurities of less than about: 0.02% sulfur (S), 0.012% phosphorus (P), 0.015% oxygen (O) and 0.015% nitrogen (N), the remainder substantially iron (Fe), incidental elements and other impurities. The alloy is strengthened by nanometer scale M₂C carbides within a fine lath martensite matrix from which enhanced chemical partitioning of Cr to the surface provides a stable oxide passivating film for corrosion resistance. The alloy, with a UTS in excess of 280 ksi, is useful for applications such as aircraft landing gear, machinery and tools used in hostile environments, and other applications wherein ultrahigh-strength, corrosion resistant, structural steel alloys are desired.

A slat is selectively extended from a main wing body, with a concave rear surface of the slat facing a convex forward nose surface of the wing body, with a slat gap therebetween. At least one row of flexible bristles is movably arranged relative to the lower rear edge of the slat, to flexibly protrude up into the slat air gap. At least one row of flexible bristles is movably arranged along the upper rear edge of the slat to extend rearwardly over the slat air gap and the upper surface of the main wing body. The flexible bristles are flexibly self-positioning and self-contouring due to the aerodynamic forces acting thereon, to improve the air flow conditions through the slat gap, separate the slat gap airflow from an entrapped eddy vortex on the concave rear surface of the slat, and thereby reduce the aerodynamic noise generated along the slat gap.

An apparatus advantageously influences the wing root airflow along the wing root of an aircraft having a high lift system including leading edge slats provided on the main wings. The apparatus includes a respective vortex generator arranged on the inboard end of each leading edge slat in the area of the wing root, and further includes a respective transition fairing arranged on a separation edge that is let into the leading edge of the wing root and that borders along the inboard edge of the respective slat. The vortex generator is a rigid member fixed to the leading edge slat and may be in the shape of a horn, a disk, or a winglet. The transition fairing may be a rigid member fixed to the wing root along the separation edge, or may be a flexible elastic member that can be inflated to have a variable outer contour. The present system avoids the need of additional independently movable auxiliary flaps, and thus achieves a reduced weight, complexity, and maintenance requirement.

The invention discloses an underground pressure three dimensional physical simulation test platform, which is characterized in that a frame type model platform used for bearing a model, a swing structure used for causing the frame type model platform to incline in a whole in a range of set maximum inclination angle, and a loading device used for pressing on the model in the direction of the opening of the frame type model platform are included, wherein, the frame type model platform comprises an upper opening, side wall plates arranged at the front, at the back, at the left and at the right, as well as a base plate; the base plate is provided with at least a mining hole, and the mining hole is provided with a demountable sealing lath. The invention can simulate a big inclination angle coal seam mining experiment and simulate a coal seam deep mining experiment, and meanwhile, can also simulate a bottom plate coal mining experiment, simulate a middle coal mining experiment, and the like.

A quenching and annealing preparation method of an ultrahigh-strength thin steel plate for automobiles belongs to the field of metal material heat treatment. The method comprises the steps of: firstly, heating a low-carbon steel cold-rolled sheet containing microalloy elements such as Si, Mn and Nb to a fully austenitic area and performing quenching heat treatment after austenization; secondly, heating the low-carbon steel cold-rolled sheet to a two-phase area so that the lath martensite quenched previously is decomposed and partially inverted to form the austenite, and then quickly cooling the steel sheet above Ms point and preserving heat for secondary partition; and finally, rapidly cooling to the room temperature. The steel sheet has a complex-phase structure composed of a quasi-recrystallized ferrite, a carbide, residual austenite and tiny bainite or martensite structure; and the quasi-recrystallized ferrite structure formed after annealing inherits the lath morphology feature of the martensite, which is advantageous for improving the ductility. The ultrahigh-strength thin steel prepared through the process is high in product of strength and elongation, and has the tensile strength of more than 1100 MPa, the ductility of 20% and the product of strength and elongation of 22000 MPa.%.

A tactile warning mat system includes a tactile warning mat and a plurality of elongated underlayment laths removably secured to the tactile warning mat via fasteners. The warning mat includes opposite upper and lower surfaces. The upper surface of the warning mat includes a plurality of raised projections that extend outwardly therefrom in a tactile pattern, The warning mat also includes a plurality of apertures formed therethrough. The elongated underlayment laths are removably secured to the tactile warning mat lower surface in spaced-apart relationship. The underlayment laths are adapted to be embedded within an uncured walkway surface material and each underlayment lath has a cross-sectional configuration that locks the underlayment lath within the walkway surface material when cured. Each underlayment lath includes at least one fastener receiving passageway that terminates at the underlayment lath upper surface and that is configured to removably receive a respective fastener therein.

A corrosion-resistant lath is provided for use in exterior finishing systems, such as stucco systems and exterior insulation and finish systems (“EIFS”). The lath includes in a first embodiment an open, woven fabric comprising weft and warp yarns containing non-metallic fibers, such as glass fibers. A portion of the weft yarns are undulated, resulting in an increased thickness for the fabric. The fabric is coated with a polymeric resin for substantially binding the weft yarns in the undulated condition. This invention also includes methods for making an exterior finish system and building wall including an exterior finish system using such a lath.

The present invention provides a petroleum casing pipe with high strength and high toughness, wherein the weight of the component element of the casing pipe steel is characterized proportionally. The invention also provides a preparing method for preparing the petroleum casing pipe with high strength and high toughness, wherein the method comprises the following steps: 1. smelting the ingredients and casting the tube blank; 2. punching and tandem rolling of the steel tube; and 3. heat treating. The invention has the following beneficial effects: the performance of the petroleum casing pipe obtained by the method is the performance of the steel with lower content of alloy and the cost is low; a low carbon content is adopted so that the lath martensite tissue is obtained after heat treatment, the high toughness is provided after tempering and a delayed fracture resistance is provided; the complex micro-alloying processing techniques of V, Nb, Ti, B, etc. are adopted for strengthening the matrix, strengthening the grain-boundary strength, increasing the tempering resistance, reducing the content of manganese element, reducing the content of the impurity elements and improving the shape of the inclusion. The rolling ratio is optimized so that the aeolotropism of the material is remarkably reduced and the horizontal and vertical impact toughness of the material is larger than 0.8. The casing pipe of the invention far exceeds the prior highest steel grade requirement of the API standard.

The present invention refers to a self-assemblable container, preferably manufactured from ecologic materials such as standard fiberboard, comprising as its main structural elements a bottom, two longitudinal sides and two transverse sides of a basically rectangular shape having cauterized perimetrical faces to prevent moisture penetration into the structural elements that make up the container, thus providing long term structural stiffness to the perimetrical faces of the container's structural elements comparable to that of the fiberboard surface. Each of the main structural elements comprises in one side adjacent to another corresponding main structural element, tensile-resistant flexible tabs or receiving slots, the other corresponding main structural element in said side adjacent to the first main structural element respectively comprising slots or flexible tensile resistant tabs, said main structural elements being assembled together by the insertion of the flexible tabs into the receiving slots. In addition, the container may comprise an antisagging brace, a lid and/or two transverse laths. The invention also refers to a method of manufacturing the structural elements of a self-assemblable container by means of perimetrical laser cutting that by reason of the extremely high cutting temperature causes a reaction of the natural resins contained in the raw material and the resulting perimetrical cauterization.

There is provided a flooring system for hardwood floors comprised of a plurality of elongated slats wherein the slats are held in position by a plurality of connectors, each connector having a base secured to a substrate, a vertical portion extending upwardly from the base, and a generally horizontal portion extending into a groove formed in a sidewall of the elongated slat. The system permits the slats to be installed with a minimum of labor and also permits removal of the slats and their later re-use.

A nanocarbide precipitation strengthened ultrahigh-strength, corrosion resistant, structural steel possesses a combination of strength and corrosion resistance comprising in combination, by weight, about: 0.1 to 0.3% carbon (C), 8 to 17% cobalt (Co), 0 to 10% nickel (Ni), 6 to 12% chromium (Cr), less than 1% silicon (Si), less than 0.5% manganese (Mn), and less than 0.15% copper (Cu), with additives selected from the group comprising about: less than 3% molybdenum (Mo), less than 0.3% niobium (Nb), less than 0.8% vanadium (V), less than 0.2% tantalum (Ta), less than 3% tungsten (W), and combinations thereof, with additional additives selected from the group comprising about: less than 0.2% titanium (Ti), less than 0.2% lanthanum (La) or other rare earth elements, less than 0.15% zirconium (Zr), less than 0.005% boron (B), and combinations thereof, impurities of less than about: 0.02% sulfur (S), 0.012% phosphorus (P), 0.015% oxygen (O) and 0.015% nitrogen (N), the remainder substantially iron (Fe), incidental elements and other impurities. The alloy is strengthened by nanometer scale MZC carbides within a fine lath martensite matrix from which enhanced chemical partitioning of Cr to the surface provides a stable oxide passivating film for corrosion resistance. The alloy, with a UTS in excess of 280 ksi, is useful for applications such as aircraft landing gear, machinery and tools used in hostile environments, and other applications wherein ultrahigh-strength, corrosion resistant, structural steel alloys are desired.

A self-furring wire lath comprises a mesh of transverse and longitudinal wires welded at their intersections. Stiffening trusses are formed by bent sections in the transverse wires and longitudinal wires attached to the shoulders of the bent sections. A barrier layer material is retained in the lath between the apex of the bent sections and the principal plane of the lath mesh. The barrier layer material has apertures that coincide with the intersections only at the bent sections to enable mesh size reduction without compromising the barrier layer but still allow the fabrication of the lath. The lath provides good embedment in the stucco, reduces cracking and wastage of stucco while remaining easy to work with.

The invention discloses an electro-strengthening and toughening processing method of a belt material of AZ91 magnesium alloy and a system thereof. The electro-strengthening and toughening processing method comprises following steps: when the belt material of magnesium alloy is transmitted at a certain speed which is driven by a roller on an electro plastic rolling machine, high-energy impulse current that is output by an impulse power source through an electrode is input into an electriferous region section of the moving belt material of magnesium alloy, and the Joule heating effect and the non-heating effect are generated in the electriferous region section, thus causing the phase transition of internal microscopic constitution from bulky lath-shaped Beta-Mg17Al12 that are gathering and agglomerating in an initial state to Beta-Mg17Al12 particles that are evenly distributed and approximately sphere-shaped, or causing the solid solution effect that leads Beta-Mg17Al12 to be dissolved in a substrate; the processed belt material can be naturally air cooled at room temperature. The electro-strengthening and toughening processing method of the belt material of AZ91 magnesium alloy has short processing time and high production efficiency, and simultaneously avoids the high-temperature oxidation of the magnesium alloy. After the electro-strengthening and toughening processing, the microscopic constitution of the belt material of magnesium alloy can be remarkably improved, the unit extension of the microscopic constitution is increased from 11.8 percent in the initial aging state to over 20 percent, and the tensile strength of the microscopic constitution is not dramatically lowered.

An ultra-high strength, weldable, low alloy steel with excellent cryogenic temperature toughness in the base plate and in the heat affected zone (HAZE) when welded, having a tensile strength greater than 830 MAP (120 KS) and a micro-laminate microstructure comprising austenite film layers and fine-grained marten site/lower bainite laths, is prepared by heating a steel slab comprising iron and specified weight percentages of some or all of the additives carbon, manganese, nickel, nitrogen, copper, chromium, molybdenum, silicon, niobium, vanadium, titanium, aluminum, and boron; reducing the slab to form plate in one or more passes in a temperature range in which austenite recrystallizes; finish rolling the plate in one or more passes in a temperature range below the austenite recrystallization temperature and above the Ar3 transformation temperature; quenching the finish rolled plate to a suitable Quench Stop Temperature (QST); stopping the quenching; and either, for a period of time, holding the plate substantially isothermally at the QST or slow-cooling the plate before air cooling, or simply air cooling the plate to ambient temperature.

A structural reinforcement system that utilizes a lath for receiving cementitious material. Lath is affixed to support structure such as sheathing supported by studs as may commonly be found in building construction. Strip members are affixed to the lath and function as fastener guides. Fasteners penetrate the strips for affixing lath and strips to the support structure. The strips are made of a compressible material that protects the lath from damage due to impacts associated with installing the fasteners and forms a gasket-like seal around the fasteners. Strips may be used as drainage guides for directing water that may flow behind the lath. The width of the strips creates spacing between the lath and the support structure, which allows for controlling of a thickness of a base layer of cementitious material by selecting a desired width. In another embodiment, entangled filaments are used as lath material for receiving cementitious material.

Weld metals suitable for joining high strength, low alloy steels are provided. These weld metals have microstructures of acicular ferrite interspersed in a hard constituent, such as lath martensite, yield strengths of at least about 690 MPa (100 ksi), and DBTTs lower than about -50 DEG C. (-58 DEG F.) as measured by a Charpy energy versus temperature curve. These weld metals include about 0.04 wt % to about 0.08 wt % carbon; about 1.0 wt % to about 2.0 wt % manganese; about 0.2 wt % to about 0.7 wt % silicon; about 0.30 wt % to 0.80 wt % molybdenum; about 2.3 wt % to about 3.5 wt % nickel; about 0.0175 wt % to about 0.0400 wt % oxygen, and at least one additive selected from the group consisting of (i) up to about 0.04 wt % zirconium, and (ii) up to about 0.02 wt % titanium.

A separator includes a separator body 11 and a collector 12. The separator body 11 prevents a mixed flow of fuel gas and oxidizer gas. The collector 12 is formed from a metal lath RM in which through holes each having an opening shape assuming the form of a hexagon are formed in a meshy, step-like arrangement. This establishes a substantially linear contact mode between the collector 12 and each of the separator body 11 and a carbon cloth CC superposed on an MEA 30. This contact mode increases a contact area between the carbon cloth CC and gas and allows a necessary and sufficient contact area between the carbon cloth CC and the separator body 11. Thus, gas can be supplied efficiently, and generated electricity can be collected efficiently to thereby improve electricity generation efficiency of a fuel cell.