Abstract: To start up a casting operation in a two-roll casting device without the use of a start-up strand, the method comprises setting an operating casting thickness and rotating the casting rolls at a casting-roll circumferential velocity which corresponds to a starting casting velocity, which is lower than a steady-state operating casting velocity, feeding metal melt into a melt space formed by the rotating casting rolls and the side plates to form a cast metal strip with a substantially constant, predetermined cross-sectional format while at the same time increasing the casting velocity to a strip-forming casting velocity, then increasing the casting velocity to a strip-separating casting velocity, which is significantly higher than a casting velocity which is sufficient for the prevailing full solidification conditions, and separating off the metal strip which has been cast thus far, setting a steady-state operating casting velocity, diverting the subsequent cast metal strip to a strip-conveying device and comme

Abstract: A spray head for a spraying tool for spraying the halves of a casting tool is described, in which the connection is made to a traveling arm provided with the media-carrying passages through distributing blocks disposed one under the other, from which the connection is made to spray bars through cross connections. The new configuration is selected such that the connection of the spray bars can be made selectively to the one or other of the media passages. By arranging a plurality of distributing blocks together, the addition of spray bars can also be performed stack-wise at varying distances from the particular distributing block.

Abstract: A detent connection piece (10) includes a clip hook (18) which can be pressed into a first bore (24) while being deformed until the detent connection piece snaps in and engages behind a bearing edge framing the first bore (24). The detent connection piece (10) additionally includes an end section which is adapted to be inserted into a second bore (26). Further proposed is a gas bag module including at least one such detent connection piece (10).

Abstract: A handle on doors, hoods, or the like especially for vehicles, with a stationary handle part, which can be mounted in a recess in the outer skin of the door, with a gripping element, which acts as a movable handle part and is supported on the stationary handle part, with an electrode of an electrical field-generating capacitor, located in the area of the stationary handle part, and with an electronic circuit for generating and monitoring this electrical field. The electronic circuit responds to the approach of a human hand to the gripping element and, if the response is positive, initiates defined functions in the motor vehicle. The electrode of the capacitor is integrated into a supplemental housing, and the supplemental housing is selectively locatable on the surface of the stationary handle part by the connector.

Abstract: A device (10) for thermally clamping and releasing tools (11) in shrink-fit chucks (12), having a socket (15) for a shrink-fit chuck (12), a heating unit (16) that can be moved toward and away from the mounted shrink-fit chuck (12), and a cooling unit (20) for cooling the heated shrink-fit chuck (12). The cooling unit (20) has at least one coolant distributor (21, 22) that is capable of moving in relation to the socket (15) with the mountable shrink-fit chuck (12), conveys a preferably fluid coolant, e.g. cooling water, and has outlets (23) for the coolant, which are oriented toward the socket (15) with the mountable shrink-fit chuck (12) and out of which the coolant travels under pressure to act on the outside of the socket (15) with the mountable shrink-fit chuck (12) for cooling purposes (FIG. 1).

Abstract: A wheelchair tire has a carcass having a running profile applied to an interior side and optionally having a raised lettering. At least on an exterior tire wall, starting from a region later adjoining with wheel rim edges, to at least a first boundary plane extending through the center of the tire cavity, the carcass has a smooth construction without profiles and lettering. An intersection point of the first boundary plane on the tire extends maximally offset by an angle of 45° with respect to an intersection point of a center plane with the tire.

Abstract: A two-roll casting installation with two casting rolls which rotate in opposite directions about horizontal axes and forming a casting gap for forming and discharging a thin cast metal strip. A sealed housing which has a base and surrounds a conveying path for the metal strip which leaves the casting gap and which strip is from a vertical casting direction into an approximately horizontal conveying direction. Diverter devices divert the metal strip within the housing. A displaceable scrap collection container removes scrap and scale produced from the two-roll casting installation. To minimize the penetration of external air into the housing, the base of the housing, at least in a subregion, forms a collection trough for the scrap, which is part of an emptying device, and a displaceable scrap collection container is arranged in a receiving position below the emptying device.

Abstract: The invention relates to a method for the production of (R)- or (S)-8-chloro-6-hydroxyoctanoic acid alkyl esters of the general formula (R)-II or (S)-II in which R has the meaning C1-4-alkyl, from 8-chloro-6-oxooctanoic acid alkyl esters of the general formula I in which R has the above meaning, by enzymatic reduction using alcohol dehydrogenases, such as Lactobacillus brevis or Thermoanaerobium brokii, in the presence of cofactor regeneration systems. The resulting (R)- and (S)-8-chloro-6-hydroxyoctanoic acid esters can be converted in a known manner into (R)-?-lipoic acid and (S)-?-lipoic acid, respectively.

Abstract: A drill chuck has a chuck body centered on and rotatable about an axis and having a screwthread, a main sleeve axially fixed but rotatable about the axis on the body and formed centered on the axis with a plurality of angled forwardly open guides, and respective clamping jaws displaceable in the guides. A pusher axially engageable with clamping jaws is axially forwardly displaceable relative to the chuck body to shift the clamping jaws axially forward and radially inward in the respective guides and axially rearwardly displaceable relative to the chuck body to shift the clamping jaws axially rearward and radially outward in the respective guides. A coupling jaw threadedly engaging the screwthread of the chuck body is engageable with the pusher for axially coupling the coupling jaw to the pusher. The sleeve is coupled positively to the coupling jaw for joint rotation therewith.

Abstract: A method for determining the parameters and characteristics of an n-port network such as an amplifier is described. The parameters are determined by applying an input signal train or sequence with different amplitudes and measuring an output signal train, taking into account a temporal displacement that the output signal train has in relation to the input signal train. The temporal displacement is determined by a cross-correlation of the output signal train with the input signal train.

Abstract: A sensor coil for a non-contacting inductive displacement sensor, having two inner substantially identically formed winding sections (1), with an unwound section (2) provided between the two inner winding sections. Also, the coil has two outer substantially identically formed winding sections (3), which are respectively arranged at the ends of the two inner winding sections (1) facing away from the unwound section (2). The two outer winding sections (3) have a larger number of windings than the two inner winding sections (1), thereby producing a measuring signal which is substantially linear along the measuring range.

Abstract: The aim of the invention is to generate a digitally modulated test signal, which is generated in the form of a multitude of transmission channels from a digital modulation data stream according to a predetermined digital modulation standard, and which is fed as I and Q values to an I/Q modulator. To this end: a) a portion of the transmission channels is generated, in a modulation coder, directly from an internal or external modulation data stream according to the predetermined modulation standard; b) the I and Q values for at least one portion of the remaining channels are fed as a pre-calculated modulation data sequence of alimited length from a memory to the modulation coder, and; the I and Q values generated according to a) and b) are added and fed to the I/Q modulator.

Abstract: The present invention relates to a shaft-hub connection having an attachment flange and a clamping element, particularly a clamping ring, attachable thereto, by means of which the shaft end assigned to the attachment flange may be friction-locked to the attachment flange, with an interposed bushing which receives a slip torque. The present invention is based on the object of refining a device of the type initially cited in such a way that the lifetime of the attached components in the drivetrain is increased. This object is achieved according to the present invention in that the bushing is designed in multiple parts in the axial direction.

Abstract: Vehicle steering head including a connecting element adapted to engage a handlebar. A support tube rotatably supports the connecting element. A connecting member is adapted to connect a wheel fork to a handlebar. The connecting member is rotatable with respect to the support tube. A mechanism limits the rotational movement of the connecting member in each of two directions. A lower bearing support is mounted to the support tube. The mechanism and the lower bearing support cooperate to limit the rotational movement of the connecting member.

Abstract: The invention relates to a receiving element for receiving an interchangeable yarn drawing nozzle that can be magnetically locked. According to the invention, the receiving element is configured as an adapter (26), which can be screwed into a central threaded bore (37) of a thread channel plate (12) in an open-ended rotor spinning device (1), the latter being designed to receive a conventional yarn drawing nozzle that is equipped with an external thread. The adapter (26) comprises centring bores (27) for receiving ferromagnetic centring lugs (28) of a yarn drawing nozzle (13) in addition to a continuous bore (33), whose internal diameter (d) is adapter to the external diameter (D) of the shaft (39) of the yarn drawing nozzle (13). The adapter is also equipped with permanent magnetic pins (30), which correspond with the ferromagnetic centring lugs (28) of the yarn drawing nozzle (13).

Abstract: The invention relates to hydrophilic additives for synthetic fibres containing polyolefin; said additives are represented by general formula (I): A—B—C—B—A wherein A is a radical R—COO, wherein R represents a saturated, cross-linked or non-cross-linked alkyl radical having 7–21 C atoms, B represents a group (CnH2nO)k, wherein n is a whole number from 2–4 and k can have a value of 1–15, C represents a linear or cross-linked alkylene radical having at least 2 and at the most 6 C atoms and the radical C can be, optionally, interrupted by oxygen atoms.

Abstract: The invention relates to a heat exchanger (10) with tubes (80) and a collector box (20). Said collector box (20) has a tube-plate (30) with tube openings (60) and with angled or rounded lateral regions (110,120).

Abstract: An error correction code is applied and an erasing procedure is passed as accomplished, if a maximum number of single bit failures in compliance with a criterion of the error correction code is not exceeded.

Abstract: To allow optimum adaptation of irradiation equipment, especially irradiation equipment for photodynamic therapy, to the individual anatomy of a patient, an irradiation head (1) is provided with a plate-shaped middle section (2) and plate-shaped lateral leaves (3), mounted on the middle section (2) in such a way that they can swivel. The irradiation head can be rotated about two perpendicular axes (U, W), and its height can be adjusted. With its lateral leaves (3) extended, the irradiation head (1) has a plane configuration formed by the middle section (2) and the extended lateral leaves (3). The configuration is suitable for areal irradiation of the trunk or extremities of a patient. It can also be configured to a rectangular U shape suitable for three-sided irradiation, when the lateral leaves (3) are swivelled 90°. Radiation sources, e.g.