摘要:
Plastic tube sections are connected together by providing a pair of tubes each of which is inserted into the holder of a welding device in a bent condition so that each tube has a primary tube section and a secondary tube section with the primary tube sections being aligned with each other and the secondary tube sections aligned with each other. The tubes are heated by a wafer to create four separate tube sections which are then joined together in a dual weld wherein one of the welds joins the primary tube sections together and the other of the welds joins the secondary tube sections together. The welded primary tube sections are then separated from the secondary tube sections. Communication between each pair of tube sections is achieved by pressing the tube section open at the weld.
摘要:
When plastic tubes are melted in a connect or disconnect procedure aerosol particles are formed. The aerosol particles are confined or contained by providing an ion generator which imparts an electrical charge to the particles. The charged particles are then collected by a collector plate within the device.
摘要:
A tubing set includes at least one fluid conveying tube. The fluid conveying tube has a predetermined outside diameter, and is formed of a material adapted to be dielectrically heated at a sealing location. The insulating sleeve has an inside dimension at least as large as the outside diameter of the fluid conveying tube. The tubular insulating sleeve is positioned in a substantially coaxial relationship with the fluid conveying tube at the sealing location, and has a wall with thickness which insulates the fluid conveying tube to permit sealing the fluid conveying tube, and forming a thin, easily tearable web, by the application of the radio frequency dielectric heating.
摘要:
A method and device for sampling biological fluids during collection without opening the functionally closed collection system, thereby compromising the sterility of the collected fluid. A sample bag connected to a fluid line or collection reservoir is filled coincident with fluid collection, then hermetically sealed and physically separated from the collection system using a radio frequency tubing sealer. A vacuum tube collection device is attached to the sample bag to minimize exposure to the fluid during sample handling and processing.
摘要:
A device for selectively connecting and disconnecting plastic tubes includes a welder. A carriage is located in the welder for conveying a heated wafer through the welder. A pair of arms is mounted in the welder with each arm having a tube holding pocket which extends across its respective arm. The arms are movably mounted to generally align the pockets with a gap therebetween. Each of the arms has a clamp for selectively clamping a tube in its pocket. A wafer removal station is in the welder downstream from the arms. The carriage is driven to the wafer removal station so that the wafer first passes through the gap to contact the tubes and then the wafer passes into the removal station so that it may be removed from the carriage and the carriage may be returned to its starting location. The welder includes a computer for controlling the operation and synchronizing the timing of the carriage and the arms to automate the welder.
摘要:
An end closure, a method for application of said closure in hollow tubular profiles (10), formed of a thin-walled plastic or plastic-laminate material, and a device for performing said application. The end closure (16) is provided with a partly tapered cylindrical insert wall portion (12; 18) and a circumferentially extending, groove (20) which is adapted to receive the hollow tubular profile (10) in a heat sealable joint.
摘要:
A method for closing the opening of each of the through-holes in the pipe-wall of a resin pipe and which extend parallel to the axis of the pipe, the method comprises pressing one end portion of the pipe in the direction parallel to the axis in a mold for closing the opening, the mold being connected to a high frequency current source, and heating the end portion by applying a high frequency current to the mold so as to melt the hole-partition walls which partition the through-holes, and the inner surface of the through-holes, thereby closing the opening.
摘要:
This invention relates to a compression molding method of preparing dimensionally precise highly contoured green bodies from a mixture of beta"-alumina percursor particulate and sacrificial binder. The binder comprises a thermoplastic block copolymer, oil, wax, stiffening molding, the green body may be heated to drive off the sacrificial binder and thereafter subjected to sintering. Such sintered articles are suitable for use in a sodium-sulfur battery.
摘要:
A method of producing plastic pipe having air channels axially extending through the wall thereof, with at least one of the respective ends of the air channels being closed by an annular slotted channel-closure filled with a caulking material in its annular slot. The channel-closure is force-fitted on the pipe end, so that the caulking material is pressed into the air channels.
摘要:
A method and apparatus for fusing and shaping the end of a rope, cord or the like made of heat fusible fibers avoiding the enlarged or bulbous end which normally occurs when heated in a conventional manner. The method involves inserting the cut end of a rope into a cavity of a member wherein the cavity tapers inwardly in a direction from an open end thereof to a closed bottom end, heating the member to melt the end of the rope thereby fusing together the strands and cooling the heated end of the rope to set the fused ends and shape the same to the internal shape of the cavity. The apparatus is a thin-walled, metallic member conically shaped and located at the end of a handle. A flared sleeve is also provided in which the end of the rope to be fused is inserted to compress the strands together before being heated. The conical member maybe heated by a butane torch or the like or alternatively, an electric resistance heating element maybe incorporated in a stem projecting from the handle.