Abstract: An extruder head for extrusion blow-molding plastic containers includes a ring gap nozzle with a mandrel and a ring-shaped nozzle body. An elastically deformable sleeve is arranged on an end of the nozzle outlet side and defines a gap width which can be varied by axial setting movements of the mandrel and/or the nozzle body. The geometry of the nozzle gap can be influenced by radially deforming the sleeve with setting devices during the extrusion of a hose-shaped preformed blank. The sleeve may be moved in a radial direction and is guided on sliding surfaces which support it in upward and downward directions. The sleeve may be in the form of a cylinder or tube. A lower edge of the sleeve shapes a cross-section of a melt stream exiting from the ring gap nozzle.

Abstract: The invention relates to a method for notching covers (3) for a book body (2), whereby at least two notches (5, 6) which delimit the spine are made in the cover by means of a notching tool. The invention provides that a set of automatic book body pincers (50) with at least one moveable stopping face (52) is used for adjusting the distance (d) between the notches, and the value for the thickness of the book body (2), said value being determined by means of the automatic set of book body pincers (50), is used for automatically adjusting the distance (d) between the notches (5, 6). The invention also relates to a device for notching book covers (3), which comprises a notching iron (10) with a stationary and a displaceable tool pair (11, 12; 13, 14), whereby the displaceable tool pair (11, 12 or 13, 14) can be automatically adjusted by means of a control unit to the desired distance (d) between the notches (5, 6) that delimit the spine (8).

Abstract: A sound absorber (A), especially for motor vehicles, comprising a layer (4) of absorption material, such as open-pored or optionally closed pored foamed material or a wood fiber composite, and a top layer (5) . The aim of the invention is to produce an absorber in such a way that said absorber is easy to produce and assemble and functions well. According to the invention, the top layer (5) for leading through a loom of cables (8) or the like is provided with a tubular recess (40) for leading through a loom of cables. Said recess (4) is provided with groove-like undercuts (42) on the outside.

Abstract: The invention relates to a device for preventing slag from flowing along when tapping a molten metal out of a metallurgical vessel, whereby the tap opening of the vessel is formed out of interchangeable pipes, which are located one above the other, made of wear-resistant refractory material, and enclosed by tap framing blocks, whereby the lower end of the tap interchangeable system, which is constructed as described, is formed by a cup block against which a slide that closes the opening rests. According to the invention, axially extending channels that are open at both ends of the pipe are provided in the pipe wall of at least the interchangeable pipe that leads into the interior of the vessel. Said channels are connected to a gas supply at the pipe end facing away from the interior of the vessel.

Abstract: The invention describes a method of regulating a rectifier inverter system (1), whereby electrical power is generated and/or supplied via a power source (6) and is transmitted from at least one d.c.-to-d.c. converter (3) to an intermediate circuit (4), from where it is fed via a d.c.-to-a.c. converter (5) to an alternating voltage supply (8) and/or delivered to a consumer. The d.c.-to-d.c. converter (3) is regulated in such a way that a virtually constant current flow is applied from the input of the d.c.-to-d.c. converter (3), in other words from the power source (6), to the output of the d.c.-to-d.c. converter (3), in other words the intermediate circuit (4), during a pre-settable period irrespective of the power drawn off from the intermediate circuit (4), whereas during this same period power is drawn off from the intermediate circuit (4) to feed it to the alternating voltage supply (8) or deliver it to the consumer. A controller or a control system of the d.c.-to-d.c.

Abstract: A connector includes a contact, a housing receiving the contact, and an engaging member engaged in the housing. The housing has a first receiving portion receiving the contact and a second receiving portion receiving the engaging member. The engaging member has an inserting portion for being inserted with the cable and a cable holding portion for holding the cable with being elastically deformed by the second receiving portion when the engaging member is inserted into the second receiving portion.

Abstract: An apparatus is described for needling a non-woven material (1) with at least one needleboard (15) which is drivable in a reciprocating manner in the needle-penetration direction and with a stitch base which is opposite of the needleboard (15) and is made of a continuously revolving brush belt (5) forming a conveyor for the non-woven material (1). In order to provide advantageous constructional conditions it is proposed that the needleboard (15) comprises rows of needles which have an even distance of the rows and extend in at least in one section in the revolving direction (11) of the brush belt (5), and that the brush belt (5) and the needleboard (11) can be moved back and forth in a reciprocating manner by means of a traversing drive (20) during the conveyance of the non-woven material transversally to the revolving direction (11) of the brush belt (5) to an extent corresponding to the distance of the needle rows relative to each other or an integral multiple thereof.

Abstract: An expansion turbine stage for compressed gases has a housing and a turbine rotor. The housing has flow guide channels for feeding the compressed gas to the turbine rotor. The turbine rotor, which is over-mounted and has centripetal flow through it, is followed by an out-flow diffuser enclosed by the housing, to delay the cold expanded gas. The out-flow diffuser is arranged in a holder bore in the housing, as a separate component. For thermal insulation of the housing relative to the cold expanded gas stream, the out-flow diffuser is made of a non-metallic material having a low heat conductivity.

Abstract: In a connector having a connector body for being connected to a mating object, an operating member is coupled to the connector body for making the connector body be disconnected from the mating object in a disconnection direction. The operating-member is rotatable relative to the connector body and has an engaging portion for being engaged with the mating object in the disconnection direction when the operating member is angularly offset from the disconnection direction. The connector body has a cam portion which is engaged with the operating member to make the engaging portion be disengaged from the mating object when the operating member is substantially parallel to the disconnection direction.

Abstract: A hetero-bipolar transistor on Ga—As basis which has an advantageous design and to a method for producing the same which allows production of inexpensive and long-term stable components.

Abstract: In a connector in which an insulator holds a conductive contact to be connected to a mating connector, the insulator has a receiving portion receiving a locking mechanism for locking a state of connection with the mating connector. The locking mechanism has a main body, a locking portion extending from the main body, a spring portion urging the locking portion, and an operating portion for unlocking the locking portion. The receiving portion has a cover part covering the spring portion and the operating portion.

Abstract: In order to obtain a pyrotechnic body free of harmful materials, at least one primary explosive from a group of primary explosives is used, this group including atoxic metal cations of a mono- and a dinitrohydroxydiazobenzene (“diazinate”), a ditetrazole compound of highly nitrated organic compounds from salts of the ditetrazole and aromatic nitro bodies having easily replaceable molecular groups and atoxic metal cations of a dinitrobezofuroxane as primary explosives.

Abstract: The invention relates to a dynamic gas mounting of a motor spindle, with a rotating shaft 2 which is gas-mounted in a housing 3 in the radial and axial direction, at least one radial gas bearing 4 being present for radial mounting along the shaft 2 and at least two axial gas bearings 5, 6 being present for the axial mounting of the shaft 2, and the two axial gas bearings 5, 6 having different surface profiles 12 for generating a flow of the bearing gas in the axial direction 14 of the shaft 2 in order to vent the mounting.

Abstract: In a method for vertical continuous casting of a steel band, a strand (11) of a parallelogram-like cross section is cast at first in a revolving chill-mold (2) and is thereafter transferred from said initial cross section with completely solidified longitudinal edges (10) and liquid core into a band (1) with plane-parallel cross section, this occurring in such a way that an already solidified shell (9) of the strand (11) which becomes increasingly thicker by cooling is increasingly compressed in the casting direction in a forming device (4) without upsetting deformation of the completely solidified longitudinal edges (10). In order to provide advantageous conditions it is proposed that after the compression into a band (1) the strand (11) with a still liquid core (16) is guided during the complete solidification of the core merely in a forming gap with a constant width corresponding to the thickness of the completely solidified longitudinal edges (10) and is calibrated in this process.

Abstract: An apparatus for displaying letters, numbers or symbols, especially for marking the prices of goods, with displaceable movable members arranged in a basic body. In order to provide an apparatus of the kind mentioned above which is small and versatile and allows displaying letters, numbers and symbols without requiring a store of the various characters and without requiring any complex puzzle-like composition of the letters, numbers or symbols in order to produce the desired information, it is provided that the movable members (3) are held in the opening (2) by means of a sliding seat or a loose fit.

Abstract: Air and room cleaning device (1, 21) with a suction motor and a supply of water (8), with a rotating separator which is wetted by the water and through which the air flows and with a control unit (17) which brakes the suction motor (15, 23) in particular when the separator (11) is switched off.

Abstract: In a card connector having an eject mechanism for removing a card inserted at a predetermined position, the card connector has a heat radiation member which is brought into contact with the card to promote heat radiation. The heat radiation member is held by holding members to be movable with respect to the card. The card connector further has cam mechanisms acting between the holding members and eject mechanisms for removing the card. When the card is removed from the predetermined position, the card is removed after the heat radiation member is separated from the card.

Abstract: A method for sealing the cut edges which result when filter material is cut from a zigzag-shaped starting material is provided. The filter material area situated within an outer casing is at least partly interspersed with fine particles which are present therein in an unbound state. A cutter blade separates the filter material, which during the cutting process rests against an anvil, by exerting pressure which acts approximately perpendicularly on the material to be separated. According to the method, the severance cut takes place in an area which shortly prior to carrying out the severance cut has been impregnated with a liquid which is solidifiable under pressure.

Abstract: A pair of sliding elements for machine parts exposed to high-pressure and high-temperature steam, preferably piston-cylinder arrangements for steam engines. The first sliding element is produced from a synthetic, fired but not graphitized carbon material which comprises graphitized carbon black and/or natural graphite as significant filler and whose pores are filled with metal, metal alloy, a ceramic, synthetic resin and/or pitch which has been carbonized, preferably in the form of a piston and/or piston ring. The second sliding element, preferably in the form of a cylinder liner or guide bush, comprising an iron-containing, high-temperature-resistant material which is preferably alloyed with chromium and/or nickel and is provided at least on the surface layer with a nitride layer.

Abstract: A method for producing height images of technical surfaces with microscopic resolution uses a confocal measuring microspace. The sample to be measured is displaced in the direction (Z direction) towards the microspace in a controlled manner and images are produced at defined distances with a digital camera. The digitized images recorded are transmitted to a controller (PC) for further processing and evaluation and the light intensity maximum for every pixel is detected, the position of the maximum indicating the height of the sample to be measured. The sample is displaced in a continuous manner and that the image exposures are triggered at discrete localized distances. The intensities of the N individual images recorded and digitized in the above manner are stored in the PC in such a manner that a number N of subsequent storage locations is occupied for every pixel.