2701results about "Looms" patented technology

A preform for structural joints 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 are connected at a symmetrical, distributed-column intersection, with an odd number of columns of warp fibers being located being the legs. The outer ends of the base and legs preferably have tapers formed from terminating layers of warp fibers in a stepped pattern. Tracer fibers that include a colored strand and an x-ray opaque strand are woven into the preform at selected locations as a warp fiber. The tracer fibers allow for identification of a selected location or a selected portion of the preform through visual inspection or by x-ray image.

A chemical reaction between molten aluminum and an oxygen carrier such as water to do useful work is disclosed, and in particular two chemical methods to obtain aluminum in its molten state. One is to detonate a HE/Al mixture with surplus Al in stoichiometry, and the other is to use an oxidizer/Al mixture with surplus Al in stoichiometry. Additionally, there is a physical method of shocking and heating Al using high temperature reaction products. The produced Al in its liquid form is forced to react with an oxygen carrying liquid (e.g. water), giving off heat and releasing hydrogen gas or other gaseous material. A water solution of some oxygen-rich chemicals (e.g. ammonium nitrate) can be advantageously used in place of water. A shaped charge is also disclosed having a liner that contains aluminum, propelled by a high explosive such as RDX or its mixture with aluminum powder. Some aluminum in its molten state is projected into the perforation and forced to react with water that also enters the perforation, creating another explosion, fracturing the crushed zone of the perforation and initializing cracks. Another shaped charge is shown having a liner of energetic material such as a mixture of aluminum powder and a metal oxide. Upon detonation, the collapsed liner carries kinetic and thermal energy. Also shown are methods to build and to detonate or fire explosive devices in an oxygen carrying liquid (e.g. water) to perforate and stimulate a hydrocarbon-bearing formation.

A textile fabric, sleeve formed therefrom, and methods of construction thereof are provided. The fabric forms an elongate wall constructed from lengthwise extending warp yarns woven with widthwise extending weft yarns. At least some of the warp yarns are electrically conductive and have a first diameter. The weft yarns have a second diameter that is at least 25 percent less than the first diameter of the warp yarns. As such, the conductive warp yarns are brought into closer proximity with one another than if the weft yarns were the same diameter as the warp yarns. Accordingly, the ability of the fabric and sleeve formed therewith to provide shielding protection against EMI is enhanced.

An integrally woven three-dimensional preform with stiffeners in two directions constructed from a woven base fabric having first, second and third woven fabrics. A plurality of yarns are interwoven over a region between the first and second fabrics such that the first fabric is foldable relative to the second fabric. An additional plurality of yarns are interwoven over a region between the second and third fabrics such that the third fabric is foldable relative to the second fabric. Upon folding of the woven base fabric, the integrally woven three-dimensional preform with stiffeners in two directions is formed.

The present invention relates to multidirectionally reinforced fiber preforms that conform easily to complex curvatures, such as, composite turbine fan cases, jet engine containment rings, aircraft fuselage frames, aircraft window frames, and flanged rings for attaching nacelles to aircraft engines. The present invention provides multidirectionally reinforced shape woven preforms with improved strength for composite structures that are axisymmetric as well as non-axisymmetric in nature. The invention is a preform used to reinforce a composite structure which includes a contour woven fabric portion, bi-axially braided, tri-axially braided or bias fabric portion, and/or a polar woven fabric portion, and a method of making thereof. The preform may optionally include a three-dimensionally woven portion. The combination of different forms of fabrics allows the preform to be produced without cutting and darting of the individual plies. Eliminating these cuts and darts improves the strength and performance of the resulting structure.

A method for making a textile sensor and a textile sensor can include selecting a combination of variables from the group consisting of yarn variables, stitch variables, and textile variables; and knitting an electrically conductive yarn in the textile sensor in accordance with the selected combination of variables, wherein the combination of variables is selected so as to provide a controlled amount of contact resistance in the textile sensor. The method and textile can further include a capacitive textile-sensor having at least two integrally knit capacitor plate elements and having a configuration adapted for a sensing activity. Resistance in the textile sensor can automatically calibrate to a stable baseline level after the textile sensor is applied to a body.

The present invention discloses to relates to an electrically conductive fabric, and a manufacturing method and an apparatus thereof, and more specifically to an electrically conductive fabric, and a manufacturing method and an apparatus thereof, wherein part of electrically conductive wire woven together into fabric is selectively exposed to the outside of the fabric to perform the tying of electrically conductive wires and the connection of various elements and modules quickly and conveniently, so that workability and productivity can be improved.

A warp-stitched multilayer papermaker's fabric has a set of bottom warp yarns, a set of bottom weft yarns, a set of top weft yarns and a set of warp stitching yarn pairs. The bottom warp yarns are interwoven with the bottom weft yarns. The stitching warp yarns interweave with both the bottom weft yarns and the top weft yarns, and are woven such that at locations where the first of the stitching warp yarns in a pair weaves in the top fabric layer, the second stitching warp yarn in the pair drops below the top fabric layer to interweave with one or more bottom weft yarns to bind the top fabric layer and the bottom fabric layer together. The first stitching warp yarn of the stitching warp yarn pair may weave on a first side of one of the bottom warp yarns while the second stitching warp yarn of each stitching yarn pair may weave on the other side of that bottom warp yarn. Each stitching yarn pair may be substantially stacked above a bottom warp yarn. The fabric may further include a set of top warp yarns that interweave with the top weft yarns in the top fabric layer. The set of top warp yarns may be woven from a first warp beam, the set of bottom warp yarns may be woven from a second warp beam and the set of stitching warp yarns may be woven from a third warp beam.

The present invention relates to an igniter composition which is capable of being extruded to yield a robust igniter extrudate. The composition is particularly useful in the form of an igniter stick or other selected geometry for use in supplemental safety restraint systems designed for use such as in vehicles, ground or airborne, having such systems.

A cutting balloon assembly and a method for fabrication of the assembly is described. The cutting balloon assembly comprises a delivery catheter, an expandable balloon mounted on the catheter distal end, and a scoring mesh disposed around the expandable balloon. The scoring mesh comprises interlacing filaments that extend from a mesh proximal end towards a mesh distal end, form distal filament loops at said mesh distal end, and then return to the mesh proximal end. At least a part of the interlacing filaments forms one or more permanent links with neighboring filaments between the mesh proximal end and the mesh distal end.

A curved reinforcing fiber substrate having a curved planar shape comprising a plurality of reinforcing fiber yarns arranged parallel to a direction along a circumferential direction of the curved shape, and auxiliary weft yarns arranged in directions crossing the plurality of reinforcing fiber yarns each arranged in one direction of the circumferential direction.

A geogrid using fiber-reinforced polymeric strips and its producing method are disclosed. The geogrid of a lattice shape includes plural longitudinal fiber-reinforced polymeric strips longitudinally arranged in parallel at regular intervals and formed by reinforcing fiber in a thermoplastic polymer resin, and plural lateral fiber-reinforced polymer strip laterally arranged in parallel at regular intervals and formed by reinforcing fiber in a thermoplastic polymer resin. Each longitudinal fiber-reinforced polymer strip has at lease one first contact point crossed with the lateral fiber-reinforced polymer strip on the upper surface and at least one second contact point crossed with the lateral fiber-reinforced polymer strips on the lower surface. The contact points are fixed by welding the longitudinal and lateral fiber-reinforced polymer strips. The geogrid is excellent in installation capacity, frictional feature and shape stabilisation and shows high tensile strength and low tensile strain and low creep deformation.

A multi-component fiber blended facing material is disclosed, whose weight proportion of spinning raw material is (the chaine is same with the weft yarn) 11-20% of tencel, 8-12% of ramee, 8-12% of bamboo fibre, 60-65% of terylene short fiber and 0.5-0.7% of conductive fibre. The invention implementing reasonable collocation and assembly of tencel, terylene, bamboo fibre, ramee and conductive fibre, which not only useds the large brute force and sticking dynam characteristic of terylene, but also full utilizes the superior characteristic and favorable wear behavior of tencel, bamboo fibre and ramee, thereby implementing ascendency complementary and inferior position elimination of various fibres, and meanwhile the conductive fibre has better and longer electrostatic resistance effect in the fibre blended yarns. The facing material has superior characteristics of moisture absorption, ventilating, electrostatic resistance, sticking, sliding, embonpoint hand feeling, good drapability, flokkit and pilling resistance, good model keeping performance, antimicrobial, etc. The invention has reasonable technique, resolve difficult problem of spinning and dyeing, and establish hardness foundation for the amenity and high-grade of the chemical fabrics facing material.

The invention provides a woven fabric comprising warp fibers and a weft wherein the weft is selected from the group consisting of pick-and-pick and co-insertion constructions; the weft comprises a spun staple yarn and a polyester bicomponent filament wherein said polyester bicomponent filament comprises poly(ethylene terephthalate) and poly(trimethylene terephthalate); and the polyester bicomponent filament has an after heat-set crimp contraction value of from about 10% to about 80%. The invention further provides a process for making such fabric.

The invention discloses a shock absorbing device for a frame of a textile machine, which comprises a base. The upper side wall of the base is provided with two groups of brackets arranged parallel to each other. The first chute, and a cross bar is slidably connected between each group of brackets, and a plurality of textile rollers are arranged between the two cross bars, and the lower side wall of the cross bar passes through the first spring and the upper side of the base The upper side wall of the base is also provided with a second chute with an upward opening, and the position of the second chute is set correspondingly to the cross bar, and the side walls on both sides of the second chute pass through the second spring A slide block is connected, and the lower side of the slide block is rotatably connected with a roller, and the lower side wall of the cross bar is also provided with two first installation grooves opening downward. The invention has the advantages of simple structure and convenient operation, and can provide buffer force in multiple directions for the frame of the textile machine, so that the shock absorption effect is good, and the structure of the factory building or damage to equipment can be avoided due to vibration.

A circular needle loom comprises a stationary bed plate for receiving a spiral textile. Engagement members may be disposed next to the stationary bed plate, such that the engagement members interface with a positional structure of the spiral textile that is used to position and rotate the spiral textile around the stationary bed plate. A conical roller deploys the spiral textile on the stationary bed plate. The engagement members rotate the spiral textile around the stationary bed plate until a predetermined number of layers are deposited on the stationary bed plate.

A spiral textile comprises a weft tow that extends from an inside diameter to an outside diameter, and a positional structure, such as a sacrificial edge and/or loop, is located next to and/or is attached to the weft tow. The positional structure facilitates positioning the spiral textile in a desired manner with respect to the circular needle loom in order to create a needled preform.

Flame resistant fabrics are formed by warp and fill yams having different fiber contents. The fabrics are constructed, for example, by selection of a suitable weaving pattern, such that the body side of the fabric and the face side of the fabric have different properties. The fabrics described herein can be printable and dyeable on both sides of the fabric and are suitable for use in military and industrial garments. Methods of forming flame resistant fabrics, and methods for forming garments from the fabrics, are also described.

A loom for weaving three dimensional woven structures which include interwoven bias fibers and at least one integrally woven junction. The loom includes bias fiber holders, bias shuttles, and independently controllable bias arms to interweave the bias fibers. Each bias fiber holder holds a bias fiber under tension. The bias shuttles may releasably grip a number of the bias fiber holders and translate them horizontally between a plurality of predetermined horizontal positions. Each bias shuttle is at a separate vertical position. At least one bias shuttle translates above the shed and at least one bias shuttle translates below the shed. Each independently controllable bias arm may releasably grip one of the bias fiber holders and translate it vertically, at one of the predetermined horizontal positions, with a range of motion extending at least between two of the bias shuttles.

A tubular woven implantable graft having a tapered section is provided. The graft comprises a first diameter and a second diameter and has a generally constant number of warp yarns per inch adjacent both the first diameter and the second diameter. A method for producing an implantable woven graft is also provided. The method includes weaving a first section having a first diameter and a tapered diameter tapering from the first diameter to a second diameter. During weaving of the tapered section a number of warp yarns are dropped from the weave and compressive forces are applied to the fabric to narrow the width of the fabric.

Flame resistant fabrics are formed by warp and fill yarns having different fiber contents. The fabrics are constructed, for example, by selection of a suitable weaving pattern, such that the body side of the fabric and the face side of the fabric have different properties. The fabrics described herein can be printable and dyeable on both sides of the fabric and are suitable for use in military and industrial garments. Methods of forming flame resistant fabrics, and methods for forming garments from the fabrics, are also described.

Described is a method of forming a textile perform for a mold having a complex curvature.

A gas generating process, which is for the continuous production of energy and hydrogen for rocket and other propulsion and is also for the continuous production of hydrogen, utilizes the reaction of metallic materials, particularly aluminum, with organic materials, particularly hydrocarbons provided as jet fuel, and with water or an oxidizer which is predominantly water. In comparison with related reactions, the reaction produces hot gases containing more hydrogen and the products have a lower temperature for the same specific impulse. The process incorporates organic liquids with metallic powders to produce desirable, lower molecular weight exhaust gas products; and the increased hydrogen is desirable for use with a fuel cell and in connection with propulsion of a super-cavitating underwater device. The process is advantageous in that a metal, in powdered form, and a hydrocarbon liquid may be provided together as a slurry or gel for effective metering. The metallic material may also be provided with the organic material in the form of a binder as used in solid propellants, and the organic material and water may be provided together in the form of a water containing liquid monopropellant. The hydrogen containing product gases from the reaction may be further reacted with suitable oxidizers for production of additional energy or steam. The reaction is particularly useful for underwater vehicles where ambient water is available and the reaction products may be used for propulsion.

The present invention is an electrically controlled propellant comprising a binder, an oxidizer, and a cross-linking agent. The boric acid (the cross-linking agent) has been found to function as a cross-linking agent for the high molecular binder used to make the propellant, thereby improving the composition's ability to withstand combustion without melting. The present invention also may include 5-aminotetrazole (5-ATZ) as a stability-enhancing additive. The binder of the present invention may include polyvinylalcohol (PVA) and/or the co-polymer of polyvinylalcohol/polyvinylamine nitrate (PVA/PVAN).

A woven preform for a reinforced composite material, which may be woven flat and folded into 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 may be parallel or angled to each other, or may have a variable width clevis in between. The outer ends of the base and/or the legs preferably have tapers formed from terminating layers of warp fibers in a stepped pattern.

A woven preform used to reinforce a composite structure which includes a central portion having a plurality of interwoven layers. The preform also includes first and second end portions having a plurality of independent woven layers that are integrally woven with the plurality of interwoven layers in the central portion and which extend along the entire length the preform. Interspersed between the plurality of independent woven layers in the first and second end portions are bias plies.

A fragrance dispensing shower head apparatus includes a shower head including proximal and distal end portions and a central bore extending therebetween. The proximal end portion has a threaded inner surface. The shower head further includes a wire-mesh screen traversing water flow such that foreign debris can be sustained upstream of the distal end portion. A mechanism is included for ejecting a quantity of the fragrance into the bore and includes a plurality of reservoirs for holding the fragrance. The reservoirs introduce the fragrance adjacent to the distal end portion and have substantially similar shapes.

A fabric may be used in high visibility personal protection clothing. The yarn is capable of being dyed to a high visibility color and a non-fusible yarn are combined in a single fabric so as to provide a fabric which not only has heat and flame resistance but can also be dyed to high visibility colors. In particular, the fabric includes a flame retardant dyeable yarn and a non-fusible fibre yarn, wherein the yarns form a double faced fabric. The fabric may be a double faced weave wherein the flame retardant yarn is a flame retardant polyester and the non-fusible yarn is an aramid yarn.

The present invention compact creel using the OETO method that accommodates an increased number of packages in a relatively small footprint while providing a straight in-line delivery path in which fiber bends and changes in direction are minimized. In addition, the present invention is a system, apparatus and method for tension control in a fiber feeding system that provides a fast and reliable method for feeding high tack elastomeric thread or fiber from a package to a manufacturing process. Furthermore, the present invention provides a method and apparatus for changing packages on a creel without interrupting the manufacturing process. In particular, the compact creel of the present invention provides for continuous operation of unwinding and fiber delivery by allowing a standby package to be loaded on the same mandrel as an active package that is presently being unwound.

An ionic liquid is disclosed A precursor composition that comprises at least one ionic liquid and at least one energetic material is also disclosed, as is a method of synthesizing an ionic liquid and a method of desensitizing an explosive composition.

A bias-weaving machine is provided. In one embodiment, the bias-weaving machine includes a plurality of yarn carriers, each holding a yarn under tension that extends in a downstream direction towards a woven product. The yarn carriers are translatable in at least one direction other than the downstream direction. The apparatus further includes a plurality of reeds disposed to comb the yarns in a downstream direction. The reeds have a range of motion extending between positions upstream and downstream of the yarn carriers. Embodiment of this invention may advantageously be utilized to weave three-dimensional woven products, such as textile preforms for aerospace composites.