Abstract: A filter unit for fluids, the filter unit comprising a filter housing with at least one filter disposed therein, at least one fluid feed line, at least one purified fluid outlet line, and at least one unpurified fluid outlet line, each of which lines is provided with a valve. The filter is sealingly seated in the filter housing in an area between the fluid feed line and the purified fluid outlet line. The filter is in the form of a conical cylinder. The wide opening of the filter faces toward the fluid feed line and the underside of the filter forms a narrower opening sealingly disposed in an intermediate plate in the filter housing. A dirt funnel is disposed below the intermediate plate. A cleaning element is rotatably seated inside the filter housing which can be lowered into the filter from a filtration position into a cleaning position.

Abstract: A process and apparatus for single screw solid state shear extrusion pulverization of polymeric materials in which the polymeric materials are heated to a temperature suitable for forming a continuous thin film of said polymeric material, and then cooled, and normal and shear forces sufficient to form powder of the polymeric material are applied by a single cylindrical or conical mesh screw. The resulting powder is fluidized upon its discharge.

Abstract: A method and apparatus for the removal of hydrogen sulfide (H.sub.2 S) from gaseous streams, particularly concentrations of H.sub.2 S lower than 100 ppm. The invention is particularly useful for removing H.sub.2 S from natural gas. The invention involves contacting a gaseous stream containing hydrogen sulfide with a sorbent solution comprising a substantially non-aqueous solvent having a low vapor pressure and a high donor number, such as dimethyl sulfoxide, a concentration of a polyvalent reducible metal ion in an oxidative state sufficient to oxidize the hydrogen sulfide to form at least one soluble sulfur compound, such as Fe.sup.3+, and a counter-ion for the metal ion, such as Cl.sup.- ; and regenerating the oxidative state of the metal ion reduced by the hydrogen sulfide.

Abstract: A method for packaging cans or tubes continuously delivered from a production installation to pick-up elements, which are moved in steps, of an intermediate station. A gripper device brings the cans or tubes in groups according to the desired number of pieces in a packaging layer to a delivery station. Each can or tube is deposited into a support element, after which the cans or tubes are pushed together out of the support elements into a loading station. The cans or tubes are placed at equal distances into the pick-up elements, wherein individual support elements are placed apart from each other at a predetermined distance. The cans or tubes are then deposited into the support elements at distances predetermined by the pick-up elements. The support elements are subsequently moved together until they touch each other, whereupon the cans or tubes are then pushed into the loading station. This method allows the use of the same apparatus for different can diameters with minimal changing effort.

Abstract: A communications system that uses electromagnetic waves. The communications system preferably operates in the millimeter-wave frequencies, and provides relatively high signal restoration and isolation. The communications system can use polarization diversity to increase the capacity of a channel. Isolation and restoration features in the transceivers eliminate or reduce the effects of precipitation and/or reflection and diffraction from objects, and thus is well-suited for an urban environment.

Abstract: A matrix-shaped display device with a display foil in which display elements are punched out in the form of tabs. The tabs are positioned in rows and columns, and depending on the desired display, can be positioned by a positioning device in front of or behind a strip having a contrasting color. The display elements are oriented alternately upward and downward from one row to the next. Pairs of oppositely oriented display elements support a strip.

Abstract: A process for producing nano size powders comprising the steps of mixing an aqueous continuous phase comprising at least one metal cation salt with a hydrophilic organic polymeric disperse phase, forming a metal cation salt/polymer gel, and heat treating the gel at a temperature sufficient to drive off water and organics within the gel, leaving as a residue a nanometer particle-size powder.

Abstract: A method for on-off modulation of a transmitter coil current of a high-Q resonant circuit transmitter comprising the steps of sensing a zero-crossing of the transmitter coil current and substantially instantaneously interrupting the transmitter coil current, and a high-Q resonant circuit transmitter for carrying out said method.

Abstract: A multi-package carrier device having a strip of a relatively high coefficient of friction material along an inner portion of the carrier. A high coefficient of friction, "tactile," material is applied to an encircling aperture style multi-package carrier device made from a relatively low coefficient of friction thermoplastic base material sheet. A strip of the tactile material is applied along one side of the base material of the multi-package carrier. The base material containing the tactile material is then cut into multi-package carriers such that the tactile material traverses a center portion of a container contacting surface of the multi-package carrier. The multi-package carrier is applied to a plurality of containers. After the multi-package carrier is applied to the containers, the tactile material between the rows of containers is in close contact with an upper portion of the container sidewall.

Abstract: A single inflatable ring-shaped body that can be drawn together and secured at the chest by a closure mechanism so as to form a neck loop and a back loop. The inflatable body can be subdivided into several air compartments, each of which can be inflated using an inflation nozzle.

Abstract: A hollow fiber contactor and process for fluid treatment having forced circulation with entry of fluid to be treated through the open ended lumen of a porous input hollow fiber having its opposite end closed and exit of treated fluid through the open ended lumen of an adjacent or nearby porous output hollow fiber having its opposite end closed. Fluid to be treated passes through the porous wall of an input hollow fiber, passes in contact with a treatment medium between the input and output hollow fibers forming treated fluid which passes through the porous wall of an output hollow fiber and exits the process. This invention provides high contact with treatment medium between the hollow fibers, especially suitable for selective sorption for gas purification or separation and for conduct of catalytic reactions.

Abstract: A formwork constructed of prefabricated elements, preferably for building a concrete wall. The formwork has two parallel walls that define a space that is filled with concrete laden with water, sand and large aggregates. An inner wall of the formwork has a lattice or perforated structure to filter and pass water and small aggregates from the space that is filled with concrete. An outer wall also has a lattice or perforated structure to filter additional water and smaller aggregates from the space that is filled with concrete. This invention also includes a concrete heating wall that may be constructed from formwork.

Abstract: A device for detecting soil compaction density comprising at least one shell material forming an enclosure, a failure plane disposed within the shell material which causes the shell material to fail at a preset static or dynamic pressure, and a detector, such as an odoriferous chemical enclosed within the enclosure which is released upon failure of the shell material, thereby indicating that the preset static or dynamic pressure has been achieved.

Abstract: A cylindrical cutting element for a cutting machine which includes base ps arranged at a uniform distance from each other. A chisel holder which receives an exchangeable chisel is secured with respect to each base element. The chisel holder has a plug connector which allows the chisel holder to be inserted into a plug receiver of the base element, where it is held by a pressure screw on the base part that grips the plug connector. To relieve the plug connector from the forces acting on the chisel, the base part has a projection which extends in an approximately parallel direction to the running direction of the cutting element and a stop that follows the projection in the running direction and forms an angle therewith. The stop limits the insertion of the chisel holder into the base element and absorbs forces transmitted through the chisel to the chisel holder.

Abstract: A process for burning solids on a sliding fire grate system where each of the combustion control criteria are measured and controlled individually for each grate plate comprising the grate system.

Abstract: A process and apparatus for combustion of fuel which results in reduction of nitrogen oxides and carbon monoxides emissions. Fuel and primary air are preferably premixed and introduced into a combustion chamber. Secondary air is introduced through a plurality of secondary air ports which are positioned about a venturi nozzle or flame holder disk mounted with respect to a combustion chamber wall. The secondary air flowing through the secondary air ports forms relatively high velocity and momentum secondary air jets that promote rapid mixing of the fuel and primary air mixture into the secondary air flow, such that a combustion flame is established at a periphery of the secondary air jets.

Abstract: A plug-in safety coupling for pressure lines including a coupling socket (1) having a blocking member (3) pivotally mounted therein and a plug (2) insertable therein for pressureless coupling and uncoupling. The blocking member (3) is secured against pivotation at least in the flow position by means of at least one bolt or cam. The bolt or cam (67) is displaceably guided at the coupling socket (1), and in the blocking position engages into a bore or a recess in the blocking member (3). The blocking member (3) has a through bore extending perpendicularly to its pivotal axis into which an adapter (4) having a through bore, is insertable and fits tightly and sealingly and where an internal surface of the adapter (4) is shaped to receive the plug (2) to be inserted.

Abstract: A method and apparatus for introducing a liquid or gaseous treatment medium into a flue gas stream wherein a total adjustment value for controlling the amount of active substance in the treatment medium is generated by an actual value measurement of a flue gas component and a comparison with a set value, and the treatment medium is injected through a plurality of nozzles into the flue gas stream flowing through a flow chamber. The flow chamber is divided into a three-dimensional matrix of partial flow chambers, each of which comprises a nozzle and measuring devices for detecting the temperature and flow speed of the flue gas stream in the partial flow chambers. The active substance is injected with a constant volume flow of treatment medium in an amount determined by calculation of an individual adjustment value of active substance for each nozzle. The total of the individual partial adjustment values does not exceed the total adjustment value of the active substance.