Abstract: A pressure sorter for fiber suspensions comprises a rotating screen basket and cleaning blades associated therewith. To improve the operating characteristics, stationary cleaning blades are provided on both the inside and the outside of the screen basket, and the screen basket is provided at one end with an axial channel whose diameter is substantially smaller than that of the screen formed by the screen basket.

Abstract: A method for treating a blood which comprises:separating the blood withdrawn from a patient's body with a first membrane into a condensed blood fraction containing human blood plasma immunoglobulin M, and a plasma fraction; separating the plasma fraction with a second membrane into low molecular weight protein and high molecular weight protein containing human blood plasma immunoglobulin G; and mixing the condensed blood and the low molecular weight protein with a substitute liquid to return the combined liquid into the patient's body; said first and second membranes containing specific sizes of micropores uniformly distributed on at least one surface of the membrane, and having a specific permeability of albumin and specific permeability of human blood plasma immunoglobulin M or G. The method and apparatus specifically can remove only a harmful antibody from a positive patient in a crossmatch test after DST, whereby a transplantation surgery of a living-related kidney can be safely carried out.

Abstract: A light curable pit and fissure sealant composition comprises 2,2-propane-bis [3-(4-phenoxy)-1,2-dihydroxy-propane-1- methacrylate] and triethylene glycol dimethacrylate in a 55:45 weight ratio, a polymerization initiator, titanium dioxide as an opaquing agent, and DEA-EMA of at least 95 percent purity as the polymerization accelerator. Optionally, up to 50% filler can be used.

Abstract: A bending force receiver, in particular, for balances, comprises two parallelogram links which can be subjected to a load-dependent bending force, strain gauge strips which are arranged on the links and are interconnected to form an electric bridge circuit for delivering load-dependent measurement signals, and a load plate which is arranged on the bending force receiver for accommodating the load which is to be measured. At least one opening is formed on one of the parallelogram links. All of the strain gauge strips of the bridge circuit are arranged as closely as possible to this opening on only the outer side of the link comprising the opening.

Abstract: A device for measuring the flow velocity of a medium in a conduit includes a first and a second pair of transducers, for respectively emitting acoustic waves through the conduit and receiving same after multiple reflections in the conduit wall, the transducer of the first pair emitting at an angle (.alpha.) to the central longitudinal plane of said conduit and the transducer of the second pair emitting at an angle (-.alpha.) with respect to said plane.

Abstract: The invention relates to a method for checking performance of the cutting-off operation on automatic lathes for working bar material or the like. In accordance with the invention, operating conditions are initiated at the end of a prescribed time interval for the cutting-off operation which result in relative rotation of the spindles in opposite directions in the event that the material has been completely severed at the cutting-off point. A discrepancy between the specified and the actual relative rotation is interpreted as a system failure due to the presence of a material link at the cutting-off point, whereupon a corresponding error signal is triggered.

Abstract: A fiber entanglement is provided which is characterized in that it is a three-dimensional entanglement comprising elastic fibers (A) each being a fine-denier fiber bundle or exhibiting porous fiber structure as seen on a fiber cross section with a number of irregularly-shaped pores extending in the fiber axis direction; nonshrinkable, nonelastic fibers (B); and shrinkable, nonelastic fibers (C); said fibers (A) are at least partially bonded or fused together at various points of contact with one another and, thereby, produce a taut condition; said nonshrinkable, nonelastic fibers (B) are folded several times over by means of the elastic fibers (A) and the shrinkable, nonelastic fibers (C). This fiber entanglement is useful as a base material for leather-like sheet materials.

Abstract: The present invention relates to resin compositions and laminates using saponified ethylene-vinyl acetate copolymers containing a polyether component. Formed products and laminates obtained from the resin compositions are flexible, excellent in flexural fatigue resistance and gas barrier properties and extremely useful as flexible laminates.

Abstract: A broad band, balanced microwave component, such as an amplifier, includes an input Lange coupler having a first center frequency and an output Lange coupler having a second center frequency. The center frequencies of the two Lange couplers are offset or the coupling is different so that at least one of the cross-over points of the input Lange coupler is offset in frequency from both the cross-over points of the output Lange coupler. The pair of Lange couplers so offset in frequency yields no more than one peak in gain which is readily equalized by single-ended amplifiers within the balanced amplifier.

Abstract: An electrical connection for a battery pack to a battery charger or the like consisting of a bracket including a substantially flat male plate having a plurality of spaced headed projections and female electrical terminals carried within a projecting housing and a substantially flat female plate having a plurality of keyholes designed to facilitate receiving the projections and pairs of fixed and movable male electrical terminals positioned within a recess for engagement with the female electrical terminals.

Abstract: In order to so improve an aerodynamic window device for a laser which isolates the laser cavity pressure and comprises a jet nozzle and a diffuser arranged opposite the jet nozzle for generating a free jet extending from the jet nozzle to the diffuser and covering an exit aperture, that variable setting of the pressure level in the laser cavity is possible, it is proposed that a side wall (80) of the diffuser (72) which faces away from the laser cavity (34) be adjustable, at least in sections thereof, relative to a free jet direction (68).

Abstract: A television transmission system replaces the standard FM audio portion of a television signal with digital audio. Three digital audio channels are time division multiplexed on the sound carrier, using combined multi-phase and AM modulation. The audio signals are digitized using adaptive delta modulation techniques. Video vertical and horizontal framing, as well as the audio carrier phase reference, audio data bit time and frame reference, and various control data is carried using AM modulation. The digital audio information is carried using multi-phase modulation. The composite data stream may be serially encrypted to provide security and prevent unauthorized reproduction of the video and/or audio portions of the television signal.

Abstract: The invention relates to an apparatus and method for ultrasonically welding a conductor wire to an electrical terminal. The terminal has a channel portion for receiving the conductor wire. The electrical terminal with the wire therein is confined adjacent the welding tip whereby movement of the welding tip into the channel portion presses the conductor wire against the electrical terminal and welds it thereto.

Abstract: A system for detecting a transfer of article comprising a card attached to the article and a detector. When the article having the card is transferred to a monitoring area, electromagnetic signals are transmitted in advance from the detector to the monitoring area, and received by the card. Then, high frequency signals are transmitted from the card to the detector, thereby a transfer of the article can be detected.

Abstract: An automatic frequency control tracks a television signal before and after a period of interruption. The automatic frequency control comprises a voltage controlled feedback loop including a voltage controlled local oscillator and a mixer for mixing the output of the oscillator with the TV signal. The output of the mixer is filtered to remove unwanted components of the mixed signal and to equalize sidebands of the television signal. The output of the filter is supplied to a detector which is tuned to a component of the television signal, and produces a voltage corresponding to the frequency of the component. The output of the detector is supplied to the voltage control input of the local oscillator to track the television signal component. Circuitry automatically senses the absence of the TV signal component from the mixer, and automatically applies a reference voltage to the voltage control input of the oscillator when the TV signal component is absent.

Abstract: An interactive rule based system enables problem solutions to be generated in schematic diagram form. A methodology designer selects and arranges graphic primitives using a graphics terminal to create a library of icons. Under control of a computer processor, the methodology designer is prompted to identify, by way example, parameters for using each icon. The system generates and stores a specific set of rules pertaining to the use of each icon on the basis of the parameters identified. The stored rules are cross-referenced to the icon to which they pertain, so that whenever the icon is selected by a problem solving user for use in building a problem solution, the rules pertaining thereto will be accessed and applied. A methodology designer can also select and concatenate functions to each other and to icons to create more complex functions for use in building problem solutions. New functions can also be created in the form of truth tables which establish a transfer function across an icon.

Abstract: A device and method of constructing articles of fresh cut parts of plants and artificial decorative embodiments. The packaging is characterized by enveloping such articles with an inflated balloon. The article being placed in an open container, a balloon is then inflated and receives the article and container and is then securely attached to the container, thereby enclosing the article. A device for constructing the packaged article employs a rigid conduit which is received in the balloon to facilitate reception of the article and container. The gas used to inflate the balloons can be air or nitrogen. If cut flowers are used, the container is provided with some water and plant food.

Abstract: A battery pack connection consists of a substantially flat male plate having a plurality of spaced headed projections and female electrical terminals carried within a projecting housing and a substantially flat female plate having a plurality of keyholes designed to facilitate receiving the projections and male electrical terminals positioned within a recess for engagement with the female electrical terminals. At least one rotatable member is mounted on the female plate and has a pin that engages over the head of a corresponding projection to enable locking of the plates in both their electrical and mechanical connected relationship. Upon rotation of the member, the pin is moved out of engagement with the projection to enable uncoupling of the plates. A safety latch can be activated to abut the rotatable member when the plates are locked together to preclude inadvertent decoupling.

Abstract: The tube of the present invention has no or very small local minute nonuniformity in thickness of EVOH layer, and therefore drawn-formed articles such as blow bottle obtained by draw molding the tube have no streaks and are superior in appearance.

Abstract: To an elongate body (1) having preferably an adjustable length, seals (2, 3) are fixed. The seals comprise a skirt (22) forming a crown which surrounds a body portion at a small distance from the surface thereof, the skirt being made of a material having a flexibility sufficient to be slightly reduced in diameter when the tool is introduced into a tubular element to be expanded. The skirts of the two seals may be interconnected, thus outwardly delimiting an internal ring-shaped chamber (20) intended to receive an expansion fluid.