Abstract: A process for purifying a stock Sr-90 solution containing stable and radioactive impurities, holding the purified Sr-90 solution for Y-90 ingrowth, and subsequently extracting the Y-90 from the Sr-90/Y-90 solution. The stock solution is sequentially passed through two thermoxide-type sorbents (T-3 and T-5), which hold the impurities while passing the Sr-90 solution. After ingrowth of Y-90, the Sr-90/Y-90 solution is passed through sorbent T-3, which preferentially sorbs the Y-90 while passing the Sr-90 solution. The Y-90 is then eluted from the T-3 sorbent. The T-3 and T-5 sorbents are specially prepared compounds of zirconium dioxide and titanium dioxide, respectively, that preferentially sorb Y-90 under predetermined conditions of solution pH and NaCl concentration.

Abstract: A two-cycle engine 1 is provided and has a cylinder in which is formed a combustion chamber that is delimited by a piston which, via a connecting rod, drives a crankshaft rotatably mounted in a crankcase. The engine has an air duct that communicates with a transfer channel, and a mixture channel via which fuel/air mixture is drawn into the crankcase. At least a portion of the length of the mixture channel is separated from the air duct by a dividing wall that extends in a direction of flow of the air. The dividing wall separates the channels from one another in such a way that the ratio of the cross-sectional area of the mixture channel to the cross-sectional area of the air duct is approximately in the range of 0.5 to 1.9.

Abstract: An extruder is provided having a transfer region that, in an extruder sleeve, is provided with ribs between which extend flow channels. Disposed opposite the sleeve flow channels are flow channels formed in the extruder screw, and the sum of the cross-sections of the flow channels, when viewed in the direction of extrusion, is shifted toward the sleeve and then toward the screw. The ribs (20) of the extrusion sleeve (12) at the ridges facing the screw (14) have a width that is at least one third, especially at least one half, and preferably approximately 80 to 100% of the width of the flow channels (22). Provided between the ridges of the ribs (20) of the extruder sleeve (12) and of the screw (14) is a gap (24) of more than 0.5%, in particular of about one percent of the diameter of the screw (14).

Abstract: A cleaning device for a bundle of tubular filter elements designed with one end open, preferably of an industrial dust filter, is proposed. Injectors for delivery of a pulse-like compressed-air jet into the filter elements are arranged above the openings of the filter elements. The compressed-air supply of the injectors, controlled via valves, takes place via a number of nozzle tubes extending at right angles to the injectors, and a number of injectors are connected in a row to each nozzle tube. Only some of the nozzle tubes are connected directly to valves and these nozzle tubes extend to a deflection, from which at least one further nozzle tube closed at its end extends in the opposite direction. The deflection is preferably at the same time a branching from which two nozzle tubes extend, which are located on the two sides of the centrally arranged nozzle tube.

Abstract: A device for controlling an automatic weapon is provided. Disposed on or in a housing detachably mounted on the weapon is an electric drive motor, controlled by an electric control device, that drives a threaded spindle having a spindle nut on which is disposed a driver. A cocking bolt is guided on the housing and is coupled with a safety catch of the weapon, and is disposed in the path of movement of the driver and is movable out of a starting position, counter to the spring force acting on a safety catch, back to a cocking position in an end position of the spindle nut. In the cocking position, the cocking bolt is arrested by an arresting lever in the end position of the spindle nut, corresponding to the safety condition of the weapon. The cocking bolt is released by the spindle nut during its advancement in the starting position thereof, which corresponds to the released safety catch position of the weapon and leads to advancement of the cocking bolt and safety catch.

Abstract: An apparatus for producing sounds corresponding to the operation of an internal combustion engine in the interior space of a motor vehicle is characterized by a pressure sensor (20) that detects fluctuations in pressure in a fresh air stream into the engine, an amplification device (32, 33) for amplifying output signals of the pressure sensor, and at least one speaker (34) attached to the amplifier and arranged in the interior space of the vehicle for reproducing the amplified signals.

Abstract: A guide cart for an implement including a frame on which is disposed at least two wheels, and a first strut on which is disposed at least one wheel, and a second strut, wherein for a mounting of said second strut on said frame at least two spaced-apart mounting points are provided.

Abstract: This invention is a device for forming heat exchange elements with corrugated heat exchange surfaces, more particularly inserts, made of a sheet in a formable material, such as metal, between two surfaces, each thus presenting a corrugated profile. This device is of the type comprising at least two plates whose opposing faces present the said corrugated profiles and which are offset from each other so as to define between them a space to take the sheet to be formed (2). The device is distinguished by the fact that the profiles (A and B) are configured in such a way that their displacement in the direction of the thickness of the insert is constant along the corrugations in the space between the profiles. The invention can be used for the production of inserts.

Abstract: The invention relates to a coolable annular support (1) for internally cooled piston rings, comprising an annular body (2) embodied as a circular ring and a cooling channel plate (3), the cooling channel plate (3) being a component of the cooling channel, and a method for the production thereof. The components forming the annular body (2) and the cooling channel plate (3) are connected together by means of laser beams from at least one laser in a continuous wave operation. The cooling channel plate (3) is U-shaped and has openings (6) which act as an inlet or an outlet for the cooling material in conjunction with tubular-shaped bodies. It is possible to simultaneously compensate variations in volume by different air temperatures during welding. At least one edge of the annular body (2) and the cooling channel plate form a cavity (5) for the cooling material by connecting the end areas of the limbs of the cooling channel plate to said edge of the annular body (2).

Abstract: A multi-purpose recliner is provided having a recliner surface on which a person may recline and deployable for use inside and outside a vehicle, especially a military vehicle. The multi-purpose recliner includes a recliner surface material that can be rolled out, the recliner surface material forming the recliner surface and having a pair of receipt devices each extending along a respective length edge of the recliner surface material, and a disassembly-capable mount. The disassembly-capable mount includes a pair of stringers each being removably disposable in a respective one of the receipt devices of the recliner surface material and a pair of spacers releasably securable with the stringers. The multi-purpose recliner also includes a suspension structure for alternately retaining the recliner surface material in a rolled up condition and suspending the recliner surface material in a rolled out condition within the interior of the vehicle.

Abstract: A fiberoptic filling level determination apparatus for liquid transparent medium disposed in a container has a light wave conductor that is disposed within the container and has an input section that is connected to a light source and is guided in the container, in a helical path, to the deepest level of the container accessible for the filling level determination. Proceeding from the input section, the light wave conductor has a linear output section that is guided out of the container. Associated with the input section and the output section, externally of the container, is a respective device for measuring the intensity of introduced and exiting light. The ratio of the intensity measured by the devices can be represented in a filling level value.

Abstract: A drilling apparatus that includes a formation fluid sampling and hydraulic testing tool for a drilling apparatus that includes a drilling string comprised of a drilling pipe and a drilling bit is provided. The tool is mounted on a string that comprises from top to bottom a pressure reduction valve, an expandible and collapsible packer bladder assembly, the sampling tool, and a lower expandible and collapsible packer bladder assembly, disposed between the drilling pipe and the drilling bit. Associated with the packer assemblies are pressure and vacuum storage devices for inflation and deflation respectively of the bladders of the packer assemblies.

Abstract: A two-cycle engine is provided that has a cylinder in which is formed a combustion chamber delimited by a reciprocating piston that via a connecting rod drives a crankshaft rotatably mounted in a crankcase. An inlet is provided for a supply of fuel into the crankcase, and an outlet leads out of the combustion chamber. In predetermined positions of the piston the crankcase communicates with the combustion chamber via at least one transfer channel. The cover is secured to a connecting flange of the cylinder, the cover closes off the transfer channel on an outer side of a cylinder, the connecting flange is inclined relative to the longitudinal axis of the cylinder by an angle that opens in a direction toward the crankcase.

Abstract: A UV lamp unit is provided and comprises a lamp in the form of a mercury low pressure amalgam lamp that is provided with at least one amalgam deposit. A cladding tube surrounds the lamp in such a way that an air gap is provided between the lamp and the cladding tube. An element is provided in one axial direction of the lamp, in the region of the at least one amalgam deposit, for influencing the temperature of the amalgam.

Abstract: An elastic coupling is provided and has first and second coupling parts that are rotatable relative to one another and engage one another via elastomeric elements. A coupling gap remains between the coupling parts. A marking is disposed on the outer edge of one of the coupling parts, and an indicator plate is disposed on the outer edge of the other of the coupling parts. The marking and indicator plate serve for a determination of a relative angle of torque of the coupling parts, wherein the marking and indicator plate are disposed on the coupling parts such that they are centered relative to one another. The marking and indicator plate abut the coupling gap.

Abstract: A UV lamp unit includes a lamp in the form of a mercury low pressure amalgam lamp that is provided with at least one amalgam deposit. A cladding tube surrounds the lamp in such a way that an air gap is provided between the lamp and the cladding tube. An element is provided in one axial direction of the lamp, in the region of the at least one amalgam deposit, for influencing the temperature of the amalgam.

Abstract: A microfocus X-ray tube is provided, and comprises a head that during operation of the X-ray tube faces an object that is to be inspected. The head has an outer surface with a cross-section that tapers toward a free end of the head. A target is disposed on or in the head. A mechanism is provided for forming an electron beam adapted to bombard the target, and forms the electron beam such that the X-ray tube has a focus with a diameter of ?200 ?m. The target has an outer surface with a cross-section that tapers toward an end of the target that during the operation of the X-ray tube faces an object that is to be inspected. A collimator can be provided for the target and also has an outer surface with a cross-section that tapers toward an end of the collimator that during operation of the X-ray tube faces an object that is to be inspected.

Abstract: A shaft locking device for a motor-driven, hand-guided work tool spindle has a driven member fixedly connected thereto, a freewheel with locking members, a ring fixedly connected to the housing and engaged by the locking members in both rotating directions, a drive member coaxially arranged to the spindle with unlocking members cooperating with locking members releasing when the driving member is engaged, thereby releasing the driven member from the ring. Drive member cams are spatially separated from unlocking members wherein they penetrate the locking member. Driven members have catch openings such that both drive and driven members also have torque-transmitting catch surfaces for a motor-driven action of the spindle so that the catch surfaces have a larger distance from one another in a neutral position of the drive member than between the unlocking members and the locking members.

Abstract: An internal combustion engine is provided, and has a throttle element mounted in the intake channel of the engine so as to be pivotable, via a throttle shaft, between an idling position and a full-load position. An abutment is fixedly connected with the throttle shaft. In the idling position, the abutment rests against a stop element that is fixed in position on the intake channel. The stop element is adjustable and establishes the idling position of the throttle element. The abutment forms, with the stop element, a switch that is actuated in the idling position of the throttle element.