Abstract: A two-piece headset with audio for AR (Augmented Reality)/VR (Virtual Reality)/MR (Mixed Reality), including a headpiece that is readily cleaned and disinfected, that in use releasably couples with an audio-visual component, so as to avoid physical contact between the audio-visual component and the user's head, and featuring automatic disengagement of headphones on decoupling of the headpiece and audio-visual component. An amusement attraction using two-piece headset with audio and having a support and retraction assembly for the audio-visual component.

Abstract: A two-piece headset with audio for AR (Augmented Reality)/VR (Virtual Reality)/MR (Mixed Reality), including a headpiece that is readily cleaned and disinfected, that in use releasably couples with an audio-visual component, so as to avoid physical contact between the audio-visual component and the user's head, and featuring automatic disengagement of headphones on decoupling of the headpiece and audio-visual component. An amusement attraction using two-piece headset with audio and having a support and retraction assembly for the audio-visual component.

Abstract: A tank ventilation system of a motor vehicle includes a vapor filter, a first line connecting the vapor filter at a corresponding first introduction point to a suction pipe, and a second line connecting the vapor filter at a corresponding second introduction point to an environment line. The second introduction point is arranged between an air filter and a compressor of the environment line. The second line includes a Venturi nozzle configured to remove carrier flow from downstream of the compressor and upstream of the throttle valve.

Abstract: A computer case containing a computer pad with electrical port, and Jumper cable removably coupled to the electrical port. A bottom compartment defined by a first and second pair of opposed bottom walls connected by a bottom wall. A top cover, including a first and second pair of opposed top walls connected by one top wall. A spacing layer, formed to substantially fill the bottom compartment. Wherein a computer pad cavity in a central region of the spacing layer has a first and second pair of opposed spacing walls connected by a spacing wall that the computer pad rests upon. A jumper cable cavity extending from an edge of the computer pad, positioned next to the electrical port, terminating at a case electrical port. Wherein the jumper cable within the cavity may be coupled to the computer pad and one of the first and second pair of opposed bottom walls.

Abstract: A vessel electrode line (10) for pacemaker stimulation and/or for sensing cardiac actions in the region of the atrium has an oblong base body (11) that receives at least one electrode supply line, and at least one electrode (13, 14) that is mounted on the base body, with the effective diameter of the electrode(s) being nearly identical to the diameter of the base body, and with fixing elements (11a) that essentially do not act as an electrode, and particularly have at least a partial insulating surface, being provided for fixedly positioning the electrode(s) with respect to the vessel wall.

Abstract: An arrangement is provided for providing a vacuum for the brake power assist unit of a motor vehicle having a vacuum pump which can be connected as required as a function of the operating conditions, and at least one other additional pump being provided for the buildup of a sufficient vacuum in the brake power assist unit. The additional pump is a secondary air pump already present in the vehicle, the controlling of the vacuum pump taking place simultaneously with the switching-on of the secondary air pump.

Abstract: The invention relates to a process for controlling the degree of attrition or wear of a sealing screw (8) conveying a plasticized material, in particular synthetic plastic material, against an resistance, wherein the sealing screw (8) is bearingly supported within a screw housing (4). For this, the pressure of the conveyed material is measured at two locations spaced apart from each other, when seen in direction of conveyance. These two locations are disposed on both sides of a resistance body (12) towards which the sealing screw (8) conveys. The difference of the two measured values is used for indicating the degree of wear of the screw (5) or its housing, respectively.

Abstract: A device for manufacturing uniform sheets from paper panels having a cutter roller which has, at its circumference, at least one pair of blades which interact with a stationary counter blade. Each blade is individually adjustable and is fastened to a mounting surface of a prismatic recess wherein the mounting surface extends parallel to the rotation axis of the cutter roller. Each blade is adjustable by way of a feeding member which acts perpendicularly on the blade for radial adjustment of the blade.

Abstract: Toxic refractory organic substances are decomposed by exposing them to an oxidizing medium and steam at a temperature in the range of 2500.degree. F. to 3200.degree. F. for a period of 5 to 500 milliseconds in a reaction chamber. The toxic refractory organic substance can be dioxins, polyhalogenated byphenyls, organophosphates, halogenated biocides, waste streams from the production of said toxic substances, and mixtures thereof.

Abstract: Toxic refractory organic substances are decomposed by exposing them to an oxidizing medium and steam at a temperature in the range of 2500.degree. F. to 3200.degree. F. for a period of 5 to 500 milliseconds in a reaction chamber. The toxic refractory organic substance can be dioxins, polyhalogenated byphenyls, organophosphates, halogenated biocides, waste streams from the production of said toxic substances, and mixtures thereof.

Abstract: The invention relates to a process for obtaining extractive-material-reduced cellulose with a low LAL reaction, wherein cotton linters or wood pulps, subsequent to the customary digesting treatment, are subjected for 1 to 10 hours to hydraulic washing with water, lye with a concentration of less than 5 g/l alkali content, or with a diluted acid containing less than 5 g/l acid at temperatures of 120.degree. to 180.degree. C. and under a pressure of 2 to 20 bar.The resulting cellulose is used for the manufacture of hemodialysis and/or hemofiltration membranes in the form of flat membranes, tubular membranes or hollow filaments by regeneration of a cellulose solution containing the extractive-material-reduced cellulose with a low LAL reaction.The regeneration may be effected from solutions of cellulose cuoxam, cellulose xanthate, or solutions of cellulose in tertiary amine oxide or in an LiCl-containing solvent.

Abstract: The invention relates to a dialysis membrane of regenerated cellulose and to a process for its production. Isocyanate prepolymers with an average molecular weight of 300 to 50,000, which are soluble in organic solvents other than solvents reacting with isocyanate groups and dissolving cellulose, are bound chemically at least to one membrane surface of the dialysis membrane. The dialysis membrane of the present invention substantially eliminates the symptoms of leukopenia and complement activation.

Abstract: A filter apparatus, particularly for filtering extruded thermoplastic synthetic plastics material, has a housing, within which two carrier members are shiftably arranged, each of which carries a sieve means consisting of two filter sieves. The material to be filtered is supplied to the entry side of the sieve means via an inlet passage. Within each carrier member there is provided a rinsing passage being in connection with the outlet side of the sieve means. The rinsing passage can be connected with the outlet passage when shifting the carrier member into a rinsing position. In this rinsing position, the entry side of the sieve means is at least partially connected with a space receiving the sieve contaminations or opens into atmopshere, respectively.

Abstract: The invention relates to a method for the production of a dialysis membrane of regenerated cellulose. Isocyanate prepolymers with an average molecular weight of 300 to 50,000, which are soluble in organic solvents other than solvents reacting with isocyanate groups and dissolving cellulose, are bound chemically at least to one membrane surface of the dialysis membrane. The dialysis membrane made by the process of the present invention substantially eliminates the symptoms of leukopenia and complement activation.

Abstract: A dialysis membrane used for hemodialysis having a structure comprised of flat films, blown films or tubular threads of substitution-modified cellulose, in which the effects of complement activation and leukopenia are clearly reduced. The average degree of substitution of the modified cellulose is 0.02 to 0.07. Dialysis membranes, which have proven successful within the scope of the invention, contain modified cellulose, having a structure represented by the formula cellulose-Z, wherein Z represents the group --R'--X--Y.X is at least one member selected from the group consisting of ##STR1## Y is at least one member selected from the group consisting of --R, --NR.sub.2, --Si(OR").sub.3, --SO.sub.3 H, --COOH, --PO.sub.3 H.sub.2, --N.sup.+ HR.sub.2, --OR" and the salts thereof.R' is at least one member selected from the group consisting of an alkylenes cycloalkylenes and arylenes having a total of 1 to 25 carbon atoms.R" is a hydrogen atom or R.

Abstract: A tool which is used to make rows of perforations in a running web of paper or the like has a rotary holder and a flat blade which is removably secured to the holder so that one of its longitudinal edge faces extends beyond the periphery of the holder. Such one longitudinal edge face has a row of perforating teeth and the blade has an elastically deformable portion which extends lengthwise of the one longitudinal edge portion to enable at least some of the perforating teeth to yield if they engage a hard surface while the row of teeth bulges outwardly in the region between the ends of the one longitudinal edge face. The elastically deformable portion can have one or more rows of slots or one or more corrugations. If the elastically deformable portion has two rows of slots, the slots in the row which is nearer to the perforating teeth partially overlap the neighboring slots of the adjacent row.

Abstract: Embedding mass of polyurethane produced on the basis of castor oil, and a method for its production, wherein an aromatic diisocyanate is reacted with a mixture of castor oil and trimethylolpropane into an NCO-group displaying pre-adduct, the pre-adduct being mixed for network polymerization with castor oil or a mixture of castor oil and trimethylolpropane, and after embedding the mixture is hardened in the presence of catalyst, thereby characterized in that a titanium alkylate compound is used as catalyst in amounts from 7 to 700 ppm, calculated as elemental titanium. Preferably, the catalyst is a titanium tetraalkylate; in particular titanium tetrabutylate. Also, a titanium magnesium hexaalkylate may be used as titanium alkylate compound; preferably, titanium magnesium hexabutylate. Preferably the catalyst is present in amounts from 40 to 140 ppm, calculated as elemental titanium.

Abstract: In a hydrostatic gear machine of the type having an internally toothed outer gear and an externally toothed inner gear wherein the gears have different numbers of teeth, the gears being meshed with the outer gear surrounding gear, particularly advantageous relationships between the numbers of teeth and the shapes of the tooth flanks are provided to permit economic manufacture of the machine for use as a motor or pump.

Abstract: The converter protection device has a number of controlled semiconductor elements. A control unit is connected to the semiconductor elements of the converter for forming firing pulses for the controlled semiconductor elements. Reference blocking intervals for the semiconductor elements are set and actual blocking intervals of the semiconductor elements are set and controlled. A comparator receives and compares the reference and actual blocking intervals. There are also provided a read-only memory for storing the reference blocking intervals, an event counter for counting disturbances detected by comparison of the reference and actual blocking intervals, a memory stage being connected to the event counter and being set if the event counter reaches a predetermined count, and a time-base device connected to the event counter and memory stage for resetting the event counter if the memory stage is not set at the end of a predetermined base time.

Abstract: An enhanced petroleum oil recovery method for increasing the quantity of oil recoverable from an underground deposit thereof is provided which involves injecting into a first point in such deposit a liquid mixture of low molecular weight, light hydrocarbons; alternately reducing and raising the back pressure exerted on said deposit so as to alternately induce boiling and condensation of said light hydrocarbon mixture; recovering from a second point in said deposit under controlled back pressure a mixture of said light hydrocarbons and oil; separating the light hydrocarbons from the extracted petroleum oil by distillation; and then recycling the light hydrocarbons to the injection step. Another aspect of the invention involves utilizing the essential features thereof for the recovery of oil from oil-bearing sands, e.g. tar sands, which are mined and brought to the surface.