458 results about "Conductive yarn" patented technology

Textile-based electrodes include a fabric portion having stretch-recovery non-conductive yarns and an electrically conductive region having stretch-recovery electrically conductive yarn filaments. The electrodes can further include float yarns and can be configured in a textured or ribbed construction. When incorporated into a garment, the electrodes can be used to monitor biophysical characteristics, such as the garment wearer's heart rate.

Coaxial and twisted pair conductive yarn structures reduce signal crosstalk between adjacent lines in woven electrical networks. A coaxial conductive yarn structure includes an inner conductive yarn having a plurality of conductive strands twisted together. An outer conductive yarn is wrapped around the inner conductive yarn. An insulating layer separates the inner and outer yarns. A twisted pair conductive yarn structure includes first and second conductive yarns, each including a plurality of conductive strands being twisted together. The first and second conductive yarns are twisted together to form a helical structure. In a woven electrical network, at least one conductor of adjacent conductive yarn structures is connected to ground to reduce signal crosstalk. Coaxial and twisted pair yarn structures may also be formed simultaneously with weaving or knitting the threads that make up the structures into a fabric.

A device and method for measuring the pressure exerted at different points of a flexible, pliable and/or extensible fabric capable of being worn as a garment, lapel, or the like, which provides three stacked layers including a first insulating layer comprising an arrangement of insulating fibers and at least one row of at least one conductive yarn in contact with a first surface of a piezoresistive layer of fibers of a piezoresistive material, and a second insulating layer comprising an arrangement of insulating fibers, including at least one row of at least one conductive yarn, in contact with a second surface of the piezoresistive layer, and an electronic circuit capable of measuring the electric resistance variation when a pressure is exerted on the fabric, the pressure being a function of the resistance variation.

The present invention relates to a detector constructed from electrically conducting fabric and configured to present a varying electrical characteristic in response to a mechanical interaction. The detector comprises a first conducting layer (401) which is displaced from a second conducting layer (402) such that conduction between the layers results when the layers are mechanically forced together. In addition, the first of the layers has a plurality of lengths of conductive yarn and a plurality of lengths of non-conductive yarn machined therein, such that at least one length of conductive yarn is electrically isolated from another of the lengths of conductive yarn and the conducting yarns in the first of the layers are electrically grouped to define a plurality of identifiable rows. Each identifiable row has a respective electrical conductor; and define specific regions of the detector.

Textile-based electrodes incorporating graduated patterns include a fabric portion having non-conductive yarns and an electrically conductive region having electrically conductive yarn filaments. The electrodes can further include float yarns and can be configured in a textured or ribbed construction. When incorporated into a garment, the electrodes can be used to monitor biophysical characteristics, such as the garment wearer's heart rate.

A multi-channel electrode sensor apparatus for measuring a plurality of physiological signals is provided. The multi-channel electrode sensor apparatus includes a multi-channel electrode having a plurality of electrodes that are weaved using respective conductive yarns to measure potential differences of a plurality of physiological signals and an insulation fabric that is weaved using a non-conductive yarn to insulate the electrodes from each other and a snap connection unit that connects the multi-channel electrode to a measuring device to transmit the physiological signals to the measuring device.

A heating pad system comprises a pad formed of layers of flexible material, a heating element applied to or embedded within a layer of the pad and including conductive yarn, a temperature sensor associated with the pad to generate a temperature signal indicative of a temperature of the pad, and a battery-powered control module removably connected to the heating element and the temperature sensor. The control module is operable to supply current to the heating element to generate heat, wherein the current supplied to the heating element is regulated in response to the temperature signal from the temperature sensor to maintain the pad at a substantially constant temperature. The pad layers, heating element, and temperature sensor are machine-washable as a unit. The pad may be worn under an orthopedic or athletic brace.

A conductive yarn and a cloth containing the same are revealed. A plurality of fibers is wound with a heating element in a spiral form so as to form a yarn with electrical conductivity and flexibility. The conductive yarn is used as a thread in a first direction while regular yarns with conductive metal wires arranged at the two sides thereof are used as threads in a second direction. Thus the threads are woven into a cloth that generates heat while being conducted with electricity. Thereby the cloth can be made into mattress, curtains, textile wall coverings, oversleeves, knee braces, waist supports, foot pads, seat cushions, and carpets etc so as to replace various heating equipment.

The invention provides a flexible electronic skin capable of sensing pressure and a preparation method thereof, relates to the technology field of flexible sensors. The flexible electronic skin is interwoven by a plurality of conductive yarns and forms a fabric structure. The conductive yarn comprises a conductive fiber as an inner core and a conductive elastomer material coated on the surface ofthe conductive fiber. The flexible electronic skin uses the conductive fiber as an electrode material and the conductive elastomer material layer as a sensitive material layer, and uses contact resistance change of warp and weft interlacing points of the conductive yarns as a signal for sensing pressure. The invention also provides a preparation method of the flexible electronic skin capable of sensing pressure. The prepared flexible electronic skin has good stability and high sensitivity, and does not need to introduce an external electrode, and can be directly woven into a textile, or used for mechanical sensing of the surface of a robot arm and a human prosthetic.

The present invention relates to a resistance-type pressure distribution fabric sensor. The resistance-type pressure distribution fabric sensor comprises an upper electrode layer, a conductive layer and a lower electrode layer which are laminated orderly from top to bottom, the upper and lower electrode layers are both fabrics formed by knitting the conductive yarns and the non conductive yarns into the stripes of different widths, wherein the stripes formed by the conductive yarns form the electrodes, the stripes formed by the non-conductive yarns form the electrode isolation belts, and the two types of stripes are arranged at intervals. The resistance-type pressure distribution fabric sensor of the present invention can sense the applied pressures and the pressure applying positions, and does not depend on the printed and coated conductive films on the surfaces of the fabrics.

An integrally-woven three-layer heating textile is provided. The integrally-woven three-layer heating textile includes a heat-isolated fabric layer, a thermal function fabric layer, a plurality of conductive yams and a plurality of connecting yarns. The conductive yarn is distributed between the heat-isolated fabric layer and the thermal function fabric layer. The connecting yam interlaces the heat-isolated fabric layer and the thermal function fabric layer so that the conductive yam is sandwiched between the heat-isolated fabric layer and the thermal function fabric layer.

A flexible, thermoplastic hose for high pressure and high velocity flow is provided with a flexible braided reinforcement layer with a static drain therein for conducting static electricity towards a ground. This is achieved by having at least one textile fiber yarn with conductive fibers therein braided with non-conducting textile yarns to form the braided reinforcement layer. The preferred conducting fiber yarn is formed with metal fibers as well as plastic fibers. A method of manufacture of the hose comprises providing electrical conducting yarns and non-conducting yarns in a braiding machine and braiding them about a tube having a hollow bore through which fluid flows. An abrasion resistant outer cover layer of polyurethane is extruded over the braided layer having the drain therein. For higher pressure applications, a second braided reinforcement layer may also be provided over the inner braided layer having the electrically conductive yarns. Several conductive yarns may be used to have spaced electrically conductive yarns, e.g., at 3:00, 6:00, 9:00 and 12:00 in a circular cross-section through the hose.

A patient gown comprised of therapeutic fabric for the prevention and treatment of skin wounds, and pressure wounds in particular, which includes a woven fabric having warp yarns and filling yarns woven to provide a smooth fabric surface. One of the warp or filling yarns is at least about 40% by weight of the fabric of continuous filament nylon, and the other of the warp or filling yarns is from about 0% to about 60% by weight of the fabric of continuous filament polyester or nylon having non-round filament cross sections. The fabric includes a conductive yarn at about 1% to about 2% by weight to control static dissipation, and an antimicrobial substance is topically applied or inherently available in the fabric. A method of using the patient gown to prevent and treat skin wounds, and pressure wounds in particular, is also disclosed.

Electro-conductive fibers comprise synthetic fibers and an electro-conductive layer containing carbon nanotubes and covering a surface of the synthetic fibers, and the coverage of the electro-conductive layer relative to the whole surface of the synthetic fibers is not less than 60% (particularly not less than 90%). The electric resistance value of the electro-conductive fibers ranges from 1×10⁻² to 1×10¹⁰ Ω/cm, and the standard deviation of the logarithm of the electric resistance value is less than 1.0. The thickness of the electro-conductive layer ranges from 0.1 to 5 μm, and the ratio of the carbon nanotubes may be 0.1 to 50 parts by mass relative to 100 parts by mass of the synthetic fibers. The electro-conductive layer may further contain a binder. The electro-conductive fibers may be produced by immersing the synthetic fibers in a dispersion with vibrating the synthetic fibers to form the electro-conductive layer adhered to the surface of the synthetic fibers. The electro-conductive fibers have the carbon nanotubes homogeneously and firmly adhered to an almost whole of a surface thereof and have an electro-conductivity and a softness.

An underpad including a top fabric layer constructed of a therapeutic fabric for the prevention and treatment of skin wounds, and pressure wounds in particular, is disclosed. The underpad also includes an absorbent middle layer and liquid impermeable bottom layer. The therapeutic fabric includes warp yarns and filling yarns woven to provide a smooth fabric surface. One of the warp or filling yarns is at least about 40% by weight of the therapeutic fabric of continuous filament nylon, and the other of the warp or filling yarns is from about 0% to about 60% by weight of the therapeutic fabric of continuous filament polyester or nylon having non-round filament cross sections. The therapeutic fabric includes a conductive yarn at about 1% to about 2% by weight to control static dissipation, and an antimicrobial substance is topically applied or inherently available in the therapeutic fabric. A method of preventing and treating skin wounds, and pressure wounds in particular, is also disclosed.

A fabric for the prevention and treatment of skin wounds, and pressure wounds in particular, which includes a woven fabric having warp yarns and filling yarns woven to provide a smooth fabric surface. One of the warp or filling yarns is at least about 40% by weight of the fabric of continuous filament nylon, and the other of the warp or filling yarns is from about 0% to about 60% by weight of the fabric of continuous filament polyester or nylon having non-round filament cross sections. The fabric includes a conductive yarn at about 0% to about 2% by weight to control static dissipation, and an antimicrobial substance is topically applied or inherently available in the fabric. The fabric can be used in bedding, including underpads, and patient gowns. Methods of preventing and treating skin wounds, and pressure wounds in particular, are also disclosed.

A method for knitting a garment having a tubular form, including knitting at least one conductive textile electrode on a machine having N participating feeders and M needles. The method includes the steps of continuously knitting the tubular form with one or more flexible non-conductive yarns, and knitting the electrode integrally within the tubular form, using a conductive yarn, in addition to the non-conductive yarns. The conductive yarn is knitted in a float-loop form by knitting a stitch and skipping over y needles, as follows: repeatably knitting a line segment L_k, using feeder F_i and starting at needle D₁; and knitting line segment L_k+1, using the next feeder and start stitching the first float-loop at needle D_1+s where 0<s<y. The tubular form has a preconfigured 10 knitting density, wherein the electrode has a knitting density that is higher than the preconfigured knitting density of the tubular form.