A DC voltage converter includes an oscillator that converts a DC battery voltage to an oscillating voltage, a low voltage transformer that increases the oscillating voltage to a higher oscillating voltage, and a voltage rectifying-capacitor charging network or multiplier that increases the higher oscillating voltage to yet a higher DC voltage at an output terminal for DC high voltage utilization devices and the like. An electric control switch is selectively actuated by the user to apply the battery voltage to the oscillator, resulting in the generation of the stepped-up DC voltage at an output terminal. Another DC voltage converter has an electronic switching circuit that automatically turns the oscillator on and off and a load capacitor across the electrodes that is charged and discharged to provide a shocking voltage. Utilization devices for the voltage developed by the converter shown are a miniature animal training device and a cattle prod device. The miniature animal training device has a pair of outwardly projecting electrodes mounted on a side at one end of the housing that is sized and shaped to fit within and conform to the palm of a hand. The cattle prod device has a pair of electrodes fixedly mounted on the end of a housing assembly made up of telescoping tubular housing sections arranged for relative axial movement whereby the pressing of the electrodes against an object to be shocked actuates the electric control switch and causes a shock of the object. The housing assembly is releasably supported by a rigid handle or an extensible handle assembly.

The invention provides a device for use in partially or fully immobilizing animals such as cattle, sheep and the like. The device includes a probe for insertion in the anal canal of the animal the probe comprising a pair of spaced electrodes connected by way of electrical conductors to a power source. The power source providing a pulsed electrical current having a voltage of between 2 and 10 Volts and a frequency of between 20 and 50 Hz to the electrodes.

The invention provides a device for use in partially or fully immobilizing animals such as cattle, sheep and the like. The device includes a probe for insertion in the anal canal of the animal the probe comprising a pair of spaced electrodes connected by way of electrical conductors to a power source. The power source providing a pulsed electrical current having a voltage of between 2 and 10 Volts and a frequency of between 20 and 50 Hz to the electrodes.

An extendable electronic discharge staff will consist of a central sliding member translating within a tubular body member to be positioned by the means of a spring-loaded ball detent. When the central sliding member is positioned, it will be locked in place by the means of a locking nut at the distal end of the tubular body member. A forward adjustable handgrip will be located and locked into position along the length of the tubular body member to accommodate the size and comfort of the person using the device. By rotating the rear hand grip, the device will be turned on or off, and by sliding the rear handgrip forward or backward a high or low voltage will be delivered to the distal contact end of the central sliding member. On an alternate embodiment having three contact positions, the default center position delivers low voltage while both forward and backward outer positions deliver high voltage. This action gives the operator two different voltage capabilities along with a visible snapping arc to indicate the potential of the device. A sealed cylindrical housing fixed to the rear of the tubular body member will house a removable battery pack and electronic control module. The device is capable of giving a momentary delivery, a prolonged delivery, or several prolonged deliveries and has been designed not to stun an individual unless necessary, giving the unruly individual several warnings in advance.

A method and apparatus for assembling and vending a food or drink product using a machine having a viewing window into the interior thereof. The user selects through a user interface one of a plurality of characters, then selects through the interface the ingredients to include in the product. The ingredients are dispensed into a receptacle that is moved between dispensing locations within the machine by a robotic arm. An animated sequence, soundtrack and lighting pattern is associated with each character. As the robotic arm assembles the product, the animated sequence, soundtrack and lighting for the selected character are run and shown on a display. The user is able to watch the movements of the robotic arm and the animated sequence simultaneously.

A station combines a toilet paper dispenser, dispenser for dispensing hand wipes, a dispenser for dispensing surface antibiotic wipes, and a deodorant feature. The station includes a toilet paper dispenser made from a plastic type material and the toilet paper dispenser may be a single or double roll dispenser. The station cover houses a battery-operated fan that pulls air from inside the dispenser. A tray inside the dispenser holds a fragrance cup holding a quantity of deodorant. The base holds one or two rolls of commercial toilet paper, each of which rolls on a hollow plastic axle to hold a bottle containing wipes. A microswitch may be integrated in the cover to disengage the fan when the cover of the unit is open.

A sanitized vending machine includes product and cup dispensing mechanisms and an actuation mechanism. The product dispensing mechanism, holding one or more product items, rotates through a product dispensing cycle to dispense them. The cup dispensing mechanism, holding a stack of cups, rotates through a cup dispensing cycle to dispense a cup to a predetermined position. The dispensing cycles occur in a predetermined sequence so as to enable the dispensed product items to be received in a previously dispensed cup. The dispensing mechanisms respectively include rotatable first and second driven gears drivingly interfaced to rotate during respective product and cup dispensing cycles. The actuation mechanism includes a handle and a rotatable drive gear drivingly interfaced with the first driven gear. When the handle is turned by a user through an actuation cycle the driven gears rotate the respective mechanisms through respective product and cup dispensing cycles.

A chain saw hazard warning light and method for using same. A pair of oppositely-directed light sources emit light beams throughout a chain shot hazard warning zone through rectilinear, slotted openings at opposite ends of a housing. The light beams turn on, if and only if, the cutting chain is rotating about the chain guide bar; alternatively, initiation of rotation of the cutting chain is delayed to permit the light beams to turn on some time prior thereto. The zone is defined by first and second pairs of planes that diverge in opposite directions from the chain guide bar, said planes being disposed at equal, acute angles (most preferably 15°) to, and on opposite sides of, a plane that includes the chain guide bar.

A media spindle apparatus for supporting a media roll having media to be delivered to a printing apparatus. The apparatus includes a spindle configured to support the roll. The spindle defines an axial direction about which the roll rotates relative to the printing apparatus to deliver the media to the printing apparatus. A guide member is supported by the spindle and guides the media to the printing apparatus. The guide member is positionable in a first configuration in which a securing mechanism is disengaged and the guide member is translatable substantially in the axial direction relative to the spindle. The guide member is pivotable about the axial direction relative to the spindle to move to a second configuration and thereby engage the securing mechanism to inhibit the guide member from translating in the axial direction relative to the spindle and pivoting from the second configuration to the first configuration.

An agricultural side dressing fertilizer coulter row unit includes a first attachment member adapted to be rigidly connected to a towing frame, and a second attachment member pivotably coupled to the first attachment member for pivoting movement about a substantially vertical axis. A linkage is pivotably coupled to the second attachment member for pivoting movement of the trailing end of the linkage relative to the second attachment member, and a tool-carrying stem pivotably coupled to the trailing end of the linkage carries a rotatably mounted coulter wheel for forming a slit in the soil, a liquid fertilizer dispenser for dispensing fertilizer, and a rotatably mounted closing wheel for closing the slit. A biasing element is pivotably attached to the linkage and coupled to the second attachment member for urging the stem downwardly with a controllable force.

Agricultural seed planting systems are provided. In some aspects, the system includes a processing unit, a frame, a furrow opener coupled to the frame for opening a furrow in soil, and a sensor in communication with the processing unit and adapted to sense a characteristic associated with seed planting. The sensor may generate a signal associated with the sensed characteristic and the processing unit may receive the signal. In some aspects, the sensed characteristic may be either a soil characteristic or a seed characteristic. Information associated with the sensed characteristic can be saved in memory for future use and to assist with more effective planting in the future.

A no-till apparatus for application of herbicide and fertilizer, soil preparation, and seeding of a cover crop in a standing crop has inter-row assemblies configured to pass along inter-row areas between adjacent row lines of standing crop plants. Each assembly includes a fertilizer applicator, a no-till soil preparation element, a cover crop seed applicator, and a post-seeding element.

Disclosed are apparatus and method for decontaminating and sterilizing chemical and biological agents, which can efficiently decontaminate and sterilize high precision electronic devices, communication devices, computers or inside of vehicles and air planes contaminated with chemical and biological agent by using mixture of non-thermal atmospheric pressure air plasma and oxidizing peroxide vapor. The apparatus according to the present invention comprises a decontamination and sterilization chamber 10; a first fluid supplying line L1 and a second fluid supplying line L2, which are installed in the form of closed circuit between the inlet 11 and outlet 12 of the decontamination and sterilization chamber 10; a peroxide vapor supplier which is installed on the first fluid supplying line; and a non-thermal atmospheric pressure air plasma reactor 70 which is installed on the second fluid supplying line L2.

The present invention is configured to be provided with: a bottom-equipped tubular cell main body that forms an internal space S1 that extends in a longer direction, and has one end part that is opened; a pair of applying electrodes that are arranged so as to face to each other in the internal space; and a fixing spacer that intervenes between the pair of applying electrodes to thereby define a distance between the applying electrodes, and fixes the pair of applying electrodes, wherein in a state where the fixing spacer is inserted into the cell main body, in a lower part of the internal space of the cell main body, a zeta potential measuring space in which the pair of applying electrodes are exposed is formed.

A method for producing a transparent and conductive metal oxide layer on a substrate, includes atomizing at least one component of the metal oxide layer by highly ionized, high power pulsed magnetron sputtering to condense on the substrate. The pulses of the magnetron have a peak power density of more than 1.5 kW/cm2, the pulses of the magnetron have a duration of ≦200 μs, and the average increase in current density during ignition of the plasma within an interval, which is ≦0.025 ms, is at least 106 A/(ms cm2).

The present invention provides a method for fabricating a working electrode. The method comprises the following steps: providing a photoelectrode, which comprises a conductive substrate with a semiconductor material; providing a dye solution, which comprises a dye dissolved in a solvent; and applying a voltage for conducting an electrophoresis to adsorb said dye onto a surface of said semiconductor material. The method of present invention makes the dye adsorbed fast to a surface of a semiconductor material by electrophoresis, and therefore, significantly reduces the time for fabricating a dye-sensitized solar cell.

A system for determining a cut location at a work surface includes a position sensor and a controller. The controller stores a final design plane of the work surface and determines an actual profile of the work surface. A plurality of target profiles extending along a path are determined, each corresponding to a cut location. The target profiles are based at least in part upon the cut location, a loading profile, slot parameters, and the actual profile of the work surface. The controller is further configured to determine a lowest cost target profile and the lowest cost target profile defines an optimized cut location. A method is also provided.

A system for determining a cut location at a work surface includes a position sensor and a controller. The controller stores a desired operating parameter and a final design plane of the work surface and determines an actual profile of the work surface. The controller determines a plurality of target profiles corresponding to different cut locations. The target profiles are based at least in part upon the cut location, a loading profile, slot parameters, and the actual profile of the work surface. The controller further determines an optimized target profile relative to the desired operating parameter and the optimized target profile defines an optimized cut location.

Provided is a novel coated phosphor capable of effectively suppressing the adverse effects of hydrogen sulfide gas generated by the reaction between a sulfur-containing phosphor and moisture in the air. Provided is a sulfur-containing phosphor having a configuration in which ZnO compound containing Zn and O is present on the surface of a sulfur-containing phosphor having a host material which includes sulfur.

A suspension system for a vehicle includes a frame mounting bracket for mounting to the vehicle. The suspension includes front and rear rubber torsion axle assemblies. Front and rear lever assemblies are respectively pivotally attached to the vehicle at front and rear lever pivot points. Outer housings of the rubber torsion axle assemblies are each respectively rigidly mounted to the front and rear lever assemblies. A rigid control arm is pivotally connected at one end to the front lever assembly at a front control arm pivot point and its other end is pivotally connected to the rear lever assembly at a rear control arm pivot point. When the suspension assembly encounters a force causing the front lever assembly to rotate in one direction about the front lever pivot point the rigid control arm causes the rear lever assembly to rotate about the rear lever pivot in an opposite direction.

A lightweight folding motorized chair with mechanical traction steering and braking. A folding frame supports the traction wheels and the drive system with hinged frame members configured to mechanically fold the control levers, wheels and periphery components into a substantially flat configuration for easy storage in small spaces. A mix of weight saving choices including: structural materials; mechanical traction control system; lithium ion battery; and overall lightweight design keeps the folding motorized chair at a size and weight that a person can lift into the trunk of a car.

A tool comprising a tool body having an opening defined by interior walls extending into the tool body and a casing disposed within the opening. The tool further includes a scintillator material disposed within the casing and a first compressive member disposed within the tool body at a first axial location. The first axial location extends for a fraction of a total axial length of the casing and exerts a first radially compressive force at the first axial location.

Nozzles for drilling tools, such as rotary-type drag bits and roller cone bits, a drilling tool and drilling assembly comprising nozzles, and methods of conveying drilling fluid through a nozzle for use in drilling subterranean formations are provided. A nozzle may include a substantially cylindrical nozzle body having an axis and an inlet port with a primary passage extending therethrough, and at least one secondary passage that diverges from the primary passage at an exit port.

A THz frequency range antenna is provided which comprises: a semiconductor film (3) having a surface adapted to exhibit surface plasmons in the THz frequency range. The surface of the semiconductor film (3) is structured with an antenna structure (4) arranged to support localized surface plasmon resonances in the THz frequency range.

An apparatus comprises a plasma flood gun for neutralizing a positive charge buildup on a semiconductor wafer during a process of ion implantation using an ion beam. The plasma flood gun comprises more than two arc chambers, wherein each arc chamber is configured to generate and release electrons into the ion beam in a respective zone adjacent to the semiconductor wafer.

An airflow-organization testing method for a clean room and a system using the same method are disclosed. The airflow-organization testing method for a clean room uses a thermal imaging device to detect a sample gas-flow formed by a sample gas in the clean room, and the sample gas has a temperature difference from ambient air. The airflow-organization testing system for a clean room includes a sample gas supplier and a thermal imaging device, and the thermal imaging device can continuously detect a spatial position of the sample gas and display it on a display, thereby improving detection precision and expanding detection range.

A pulverized coal burner and a pulverized coal boiler. The coal burner comprises a primary air cylinder (111) and a pulverized coal concentration device (112). The coal concentration device (112) makes the concentration of the coal flow gradually decrease from inside to outside along the radial direction, with respect to an axis (100) of the primary air cylinder (111). The coal burner further comprises a coal separating cylinder (113) and a coal guiding cylinder (114) located downstream of the device (112), the rear end of the cylinder (113) is connected with the front end of the coal guiding cylinder (114). The outlet of the cylinder (114) has a conical expansion portion (1141). The coal burner further comprises a divergent nozzle (115) connected with the rear end of the primary air cylinder (111) and whose cross-sectional area gradually increases along the flow direction of the coal flow.

Disclosed herein is an apparatus and method of constructing a stationary wear-resistant stationary nozzle 200 and/or nozzle liner 230 for solid fueled furnaces. A transition section 210 is constructed from several flat pieces 211-218 several that may have identical starting shapes. This reduces manufacturing complexity and costs. All pieces 211-218 have a high-wear weld overlay on their inner surface 316, 416. Corner pieces 215-218 are folded into a corner shape at an outlet edge 412 and rolled into a curved shape at an inlet edge 411. Horizontal 211, 212 and vertical pieces 213, 214 are only rolled at an inlet edge 311. The pieces have seam tab 240 along longitudinal edges that are welded together to construct a transition section 210. The transition section 210 may be used as a liner to reduce wear in an existing stationary nozzle or may be constructed to be connected to an inlet piece 220 to form a strong, wear-resistant coal nozzle 200.

This invention provides a system and method for efficiently and completely combusting oil in mixture with particulate solids. A furnace (kiln) having a feed nozzle with a lead screw drives the mixture from a feed hopper. This nozzle includes forced-air jets/ports at its tip providing makeup air and allowing atomization of the mixture. The nozzle thereby directs the mixture into a rotating combustion chamber that is tilted downwardly from the front toward a solid waste outlet port at the rear. Uncombusted fuel and air backflow to an upper, secondary chamber near the primary chamber front, and are completely combusted at a high temperature. Gasses exit a flue that can include a heat exchanger. This heat exchanger can be operatively connected to a heating device or other mechanism that converts the heat into usable energy. The nozzle can include a cone with axially tilted air ports about its perimeter.

A method is illustrated and described for reducing unwanted substances by injecting a reactant into a flue gas of a steam generator. In order that the reactant can also be used in larger steam generators and/or combustion chambers, a method is proposed, in which the reactant is injected into the combustion chamber of the steam generator via a reactant opening of a multi-component nozzle, in which an enveloping medium is injected into the combustion chamber through at least one enveloping medium opening arranged outside the reactant opening, and in which the enveloping medium at least partly envelops the reactant in the combustion chamber and in this way at least partly shields the reactant from the flue gas.

A fluidized bed reactor includes a bottom portion, a roof portion, and side walls vertically extending between the bottom portion and the roof portion, forming a reaction chamber of the reactor. At least one side wall of the reaction chamber forms at least one vertical indentation in the reaction chamber, which indentation extends from the plane of the at least one side wall towards the reaction chamber. The indentation extending from the plane of the at least one side wall towards the reaction chamber is formed of a portion of the at least one side wall, protruding from the plane of the at least one side wall towards the reaction chamber, and the portion of the at least one side wall includes at least two substantially vertical indenting wall portions deviating from the plane of the at least one side wall at vertical lines within a distance from each other.

In one embodiment, harmful solar cell polarization is prevented or minimized by providing a conductive path that bleeds charge from a front side of a solar cell to the bulk of a wafer. The conductive path may include patterned holes in a dielectric passivation layer, a conductive anti-reflective coating, or layers of conductive material formed on the top or bottom surface of an anti-reflective coating, for example. Harmful solar cell polarization may also be prevented by biasing a region of a solar cell module on the front side of the solar cell.

The present invention provides a dye-sensitized solar cell which enhances an area of a photo electrode by arranging metal wires on a surface of a transparent substrate or a transparent conductive layer without degrading a transparency of the solar cell, allowing the metal wires to act as a collector electrode exclusively or together with a metal electrode.

The present disclosure relates to gel-type polymer electrolyte for a dye-sensitized solar cell, a dye-sensitized solar cell comprising the gel-type polymer electrolyte, and a method for manufacturing the dye-sensitized solar cell.

A multi-standard flash-memory-card carrier is about the same size as a thick credit card and fits into a wallet. The multi-standard flash-memory-card carrier has bays that accept flash-memory cards. Larger bays on one side receive SD cards and a Memory Stick Duo card, while micro bays on another side of the carrier receive microSD cards and Memory Stick Micro cards. A carrier spine sandwiched between top and bottom covers has openings forming the bays. Spring-clip tabs on spring-clip fingers fit into notches on the side of the flash-memory cards to secure the flash-memory cards into the multi-standard flash-memory-card carrier to prevent loss. The spring-clip fingers are movable parts of the carrier spine that are deformed during insertion of the flash-memory cards. Both micro and standard flash-memory cards can be carried in the same multi-standard flash-memory-card carrier that can be placed in plastic sleeves for credit cards in a person's wallet.

A catheter assembly including an elongate member having a proximal end and a distal end. The distal end has at least one drainage opening. A hydrophilic coating is provided on at least a portion of the elongate end of the catheter. A fluid containing member is provided and is either arranged on the elongate member or within a separate area of the container. The fluid containing member contains sufficient hydrating fluid to hydrate the coating of the catheter. A container contains the elongate member and the fluid containing member and incorporates at least one foil layer to prevent evaporation of the hydrating fluid. A method of using the catheter includes inserting a catheter into a user's body and draining fluid from the user's body.

A sterilizable pouch for surgical instruments includes a sterilant permeable sheet with a first sealing strip and a sterilant impermeable sheet with a second sealing strip. The sealing strips are sealed together to define the pouch. At least one sealable open portion is for sealing the pouch after surgical instruments are located inside the pouch. An indicator material for indicating sterile processing conditions inside the pouch is located on an inner surface of the sterilant impermeable sheet inside the pouch.

A multi-pocketed decorative fabric organizer that resembles a folding file and serves as a workspace when opened and then folds up in seconds keeping all the items and materials stored in it intact, and provides a portable and compact organizer for various purposes. The organizer consists of a hard surface that folds out to a writing or working space consisting of conveniently located plastic storage pockets and an exterior of decorative fabrics.

An organization and attachment device for detachably holding an insert. The device includes a first section with a first magnet section, a second section with a second magnet section, and a connecting section joining the first section and second section. The device also includes a linking device engaged with the connecting section. The linking device includes a linking member with a first end and a second end, and a first fastener connected to one of the ends of the linking member. The holding device can be arranged in multiple positions in which the linking device is stored. In each position in which the linking device is stored, the linking device is held in place by at least one of the magnet sections. In one position in which the linking device is stored, the linking device is completely enclosed by the first and second magnet sections.

Circuits and techniques to linearize the operation of an RF power amplifier are described. A linearizer circuit may include a non-amplification signal path which includes a delay line and an amplification signal path which includes at least one amplifier stage. In some embodiments, the amplification signal path may include an odd number of amplification stages. The linearizer may be used to precondition an input signal of an RF power amplifier in a manner that improves the overall linearity of operation.

A thermally zoned substrate holder including a substantially cylindrical base having top and bottom surfaces configured to support a substrate. A plurality of temperature control elements are disposed within the base. An insulator thermally separates the temperature control elements. The insulator is made from an insulting material having a lower coefficient of thermal conductivity than the base (e.g., a gas- or vacuum-filled chamber).

In a method for performing a synchronized superposed operation of two servomotors, controllers for the servomotors perform the control for achieving the synchronized superposed operation by: calculating, for each of the servomotors, the difference, or differences, between the ideal speed and/or position deviations obtained from a control command and the actual speed and/or position deviations obtained from the rotation of the servomotor; calculating a speed correction quantity, or a speed correction quantity and a current correction quantity, from the discrepancy, or discrepancies, between the differences calculated for both of the servomotors; and adding the correction quantity, or quantities, to a speed command, or to a speed command and a current command, given to the subsidiary shaft side. Thus, a synchronized superposed operation of servomotors in which speeds and responses of the main shaft and the subsidiary shaft are well balanced therebetween can be achieved.

Graphite and/or carbon surfaces are coated with a titanium nitride coating by exposing the substrate to electric arc thermal spray process wherein titanium wire as the source of titanium and nitrogen is used as the propelling (atomizing) gas.

A method of forming an electrode is disclosed. A carbon nanotube is deposited on a substrate. A section of the carbon nanotube is removed to form at least one exposed end defining a first gap. A metal is deposited at the at least one exposed end to form the electrode that defines a second gap.

The pulverizer including a pulverization chamber, a jet nozzle, a pulverization nozzle, and a collision member is provided. The pulverization nozzle includes an acceleration tube. The acceleration tube includes an acceleration part A and an acceleration part B. A center (a) of the supply aperture is positioned within the acceleration part A. A point of intersection (b) where central axes of the acceleration tube and the supply aperture intersect is positioned within the acceleration part B. An angle θ formed between the central axes of the acceleration tube and the supply aperture satisfies an inequation 30°≦θ

Polymerization reactor systems providing real-time control of the average particle size of catalyst system components are disclosed. Methods for operating such polymerization reactor systems also are described.

In accordance with the present invention, there is provided an apparatus for fuelizing inflammable waste capable of efficiently fuelizing inflammable waste while reducing facility and operation costs of the overall system and maintaining stable operation, and so on. More particularly, the apparatus 1 for fuelizing inflammable waste comprises: a primary crusher 4 for crushing an inflammable waste W containing as principal component at least one selected from a group comprising plastics, sponges, fibers, rubbers and wood materials; a foreign matter removing device 7 for removing foreign matters F contained in the crushed objects W1; a secondary crusher 9 for secondarily crushing the crushed objects W3 from which foreign matters I, M are removed; and an injecting device 11 for injecting the secondarily crushed objects W4 generated by the secondary crusher 9 into a burner 10, and so on. The apparatus 1 may be provided with an intermediate tank 8 for storing the crushed objects W3 from which foreign matters I, M are removed, and from the intermediate tank 8 is supplied the crushed objects W3 to the secondary crusher 9.

A method and apparatus of sanitizing drinking water to be dispensed from a water dispenser having a reservoir includes the steps of providing the ozone gas generator that generates an ozone gas stream, transmitting the ozone gas stream from the generator to the water dispenser reservoir, mechanically breaking up the ozone gas stream inside the reservoir to produce ozone gas bubbles, and using the ozone gas bubbles to disinfect water in the reservoir. The ozone gas stream can be mechanically broken up using a pump such as, for example, an impeller type pump.

This is a scalable water cleansing system intended for very low technology primitive communities buildable for between $600 and $1,000 of parts. A gravity feed system is contemplated with one or more of an initial filtering stage(s), a settling stage, a UV treatment stage, and an ozonator stage. A stand-alone power system with solar power needing no infrastructure is contemplated to enhance purification. The system can improve the worst of water quality, including for small groups; and under some conditions to end up with clean water of a quality found in developed countries with mature water systems. For water to the site in communities with low precipitation, the water brought in would be emptied into the initial stage of the water cleansing system, and the person who brought the water would draw from the last stage most or all of the amount of water carried in.

Disclosed is a pressurized hollow fiber membrane module that exhibits improved durability without deterioration in packing density and permeation flux. The pressurized hollow fiber membrane module includes a composite hollow fiber membrane comprising a tubular braid woven by yarns and a polymer film on the outer surface of the tubular braid. At least one of the yarns comprises a small-fineness filament and a medium-fineness filament. The small-fineness filament comprises first monofilaments having a fineness of 0.01 to 0.4 denier, the medium-fineness filament comprises second monofilaments having a fineness higher than 0.4 and lower than 3, and a ratio of thickness of the tubular braid to outer diameter thereof is 15 to 35%.