Abstract: A turnlock fastener (1) for the connection of two components features a cover plate (4) and a base shaft (5) which is formed on the cover plate (4) and which extends away from the cover plate (4), at which at least two opposing rigid locking stands (10, 11) are positioned at a distance from the cover plate (4) and extend outward from the base shaft (5) in the radial direction. In addition, a fixing arrangement is provided to secure the turnlock fastener (1) to a first component which possesses at least two radial elastic spring limbs (14, 15) which are each arranged between two locking stands (10, 11) and which are connected at one end with the base shaft (5) and which extend away from the base shaft (5) with the other free end in the direction of the cover plate (4). That way, the turnlock fastener (1) can be secured ahead of time within certain relatively large dimensions of insertion openings of different sizes and with relatively large pullout forces.

Abstract: A turnlock fastener (1) for the connection of two components features a cover plate (4) and a base shaft (5) which is formed on the cover plate (4) and which extends away from the cover plate (4), at which at least two opposing rigid locking stands (10, 11) are positioned at a distance from the cover plate (4) and extend outward from the base shaft (5) in the radial direction. In addition, a fixing arrangement is provided to secure the turnlock fastener (1) to a first component which possesses at least two radial elastic spring limbs (14, 15) which are each arranged between two locking stands (10, 11) and which are connected at one end with the base shaft (5) and which extend away from the base shaft (5) with the other free end in the direction of the cover plate (4). That way, the turnlock fastener (1) can be secured ahead of time within certain relatively large dimensions of insertion openings of different sizes and with relatively large pullout forces.

Abstract: The invention relates to a covering device for covering a mounting recess in a cover strip of a vehicle roof. Mounting recesses of this type are, for example, provided for fastening the feet of a roof luggage carrier. The covering device is comprised of an insertion part (1), which can be positioned inside the cover strip (3), and of a hinged cover (2), which is mounted in bearing shells (7) in a manner that enables it to pivot about an axis in the longitudinal direction of the strip and which fills the recess (4) when in a closed position. Said hinged cover comprises both bearing journals (6), which are shaped thereon at both ends, as well as detent journals (11), which can be locked in an open and closed position by means of spring elements (12). These spring elements are shaped onto the insertion part (1) and act upon the detent journals (11).

Abstract: A circuit arrangement for a multimode mobile telephone that transmits and receives signals to and from various mobile radio networks contains a baseband and a transceiver unit. The transceiver unit includes a digital adaptive predistorter having a switching element. The switching element is arranged so that an optional connection is created. The optional connection connects an amplifier output to an input of a receiver causing that receiver input to be disconnected from an antenna changeover switch. This way, it is possible for the receiver to be disconnected from a transmitting and receiving antenna during periods when the receiver is not receiving signals from the transmitting and receiving antenna. While the receiver is disconnected from the transmitting and receiving antenna, the receiver is able to receive other signals.

Abstract: The invention relates to a covering device for covering a mounting recess in a cover strip of a vehicle roof. Mounting recesses of this type are, for example, provided for fastening the feet of a roof luggage carrier. The covering device is comprised of an insertion part (1), which can be positioned inside the cover strip (3), and of a hinged cover (2), which is mounted in bearing shells (7) in a manner that enables it to pivot about an axis in the longitudinal direction of the strip and which fills the recess (4) when in a closed position. Said hinged cover comprises both bearing journals (6), which are shaped thereon at both ends, as well as detent journals (11), which can be locked in an open and closed position by means of spring elements (12). These spring elements are shaped onto the insertion part (1) and act upon the detent journals (11).

Abstract: A circuit arrangement for a multimode mobile telephone that transmits and receives signals to and from various mobile radio networks contains a baseband and a transceiver unit. The transceiver unit includes a digital adaptive predistorter having a switching element. The switching element is arranged so that an optional connection is created. The optional connection connects an amplifier output to an input of a receiver causing that receiver input to be disconnected from an antenna changeover switch. This way, it is possible for the receiver to be disconnected from a transmitting and receiving antenna during periods when the receiver is not receiving signals from the transmitting and receiving antenna. While the receiver is disconnected from the transmitting and receiving antenna, the receiver is able to receive other signals.

Abstract: The invention concerns a method for producing esters of a hydroxy acid and a C1-C8 alcohol. The invention is characterized by the fact that the esterification is carried out by reactive distillation on a heterogeneous catalyst. The invention makes it possible in particular to produce high purity lactic acid esters in high yields.

Abstract: A side strut (5) for a lower steering arm of a tractor has a single-action hydraulic cylinder and a setting unit with a hollow cylinder (17) and an adjustable setting element 20. The setting element (20) includes a threaded bore (30) which receives a threaded rod (32). The hydraulic cylinder has a first attaching element (6) to connect to a tractor. The threaded rod (32) has a second attaching element (7) to connect a lower steering arm. In the fully moved-out position of the hydraulic cylinder, the setting element (20) is rotatable by an actuating lever (33). Thus, the threaded rod (32) moves in and out. To prevent any rotation, a first holding element (36) is provided. The actuating lever (33) engages the holding element in a rest position.

Abstract: The invention relates to a device for stabilizing the two lower steering arms (1) of a tractor. The lower steering arms (1) can be actuated by a hydraulic power lift (9). Each lower steering arm (1) is associated with a side strut (6) which includes a single-acting hydraulic cylinder (7) to stabilize and secure the lower steering arm (1). A pre-selection valve (12) and a control valve (13) enable the hydraulic cylinders to be connected to the power lift (9) either via a line or loaded separately by a second pressure source (P2). Thus, independently of the actuation of the power lift (9), the two lower steering arms can be centrally centered by the hydraulic cylinders (7).

Abstract: Process for the recovery of pure hydrocarbons from a hydrocarbon mixture, more particularly, a high aromatics content hydrocarbon mixture, by extractive distillation in an extractive distillation column. A first solvent feed for a first sub-flow of a selective solvent is provided between the top part of the column and the bottom part thereof. The selective solvent used is an N-substituted morpholine. Substantially non-aromatics are withdrawn as the raffinate from the head of the extractive distillation column and substantially aromatics and selective solvent are withdrawn as the extract from the sump of the extractive distillation column. A second sub-flow of the selective solvent is introduced via a second solvent feed in the top part of the column above the first solvent feed. The quantity of solvent supplied with the second sub-flow constitutes less than 50% of the total quantity of solvent.

Abstract: A lifting rod for the lower steering arm of a tractor, at the ends of the lifting rod, has connecting elements in the form of a connecting yoke 6 and a ball joint 7. The connecting yoke 6, via a threaded rod 9, is threaded into a threaded bore 10 of a tubular rod element 11. The rod element 11 is received in the housing bore 21 of the housing 8 and is movable along the longitudinal axis 17. The rod element 11 and the housing 8 are able to assume two different positions relative to one another, with the lifting rod length being fixed in one of the two positions. In the other position, both may assume a floating relationship relative to one another.

Abstract: In the production of aromatic hydrocarbon from coking crude by-product benzene after a vaporization stage in which the crude benzene is evaporated to leave a residue, the crude benzene is subjected to pressure refining in the presence of hydrogen. The residue is distilled to form high and low boiling fractions and at least the gas pressure and temperature of the distillation stage is controlled so that the sump product apart from styrene is substantially free from aromatic hydrocarbons with less than 9 carbon atoms. The rate of withdrawal of the vaporization residue from the vaporizing column is controlled, depending upon the concentration of polymer formers in the crude benzene to be in the range of 6 to 40% of the rate of feed of the coking by-product benzene to the vaporizing column.

Abstract: The production of high purity benzene and high purity toluene is obtained by utilizing the initial gas separating column for the treatment of the aromatic containing starting material as a separating column for separating a benzene rich from a toluene rich component. The benzene rich component is subject directly to distillation while the toluene is subject to predistillation to separate high boiling components and only then to extractive distillation is distilled to separate the high purity benzene from the high purity toluene.

Abstract: A coupling hook 5 for a lower steering arm 3 of a three-point attaching device of a tractor has a hook member 6 with a locking catch 7 which is spring-loaded in the direction of the locking position. The locking catch 7 is arranged in a recess 12 of the hook member 6 and extends through an aperture 13 into the bearing recess 10 to receive a bearing ball 11. For the purpose of supporting and guiding the locking catch 7, the hook member 6 is provided with a first stop face 14 and a second supporting stop 15, arranged at a distance therefrom and offset towards the rear. In the locking position, the locking catch 7 is supported on the hook member 6 by means of a first supporting face 19, a second supporting face 21 and a blocking face 22.

Abstract: A side strut 6 for the lower steering arm of a three-point attaching device of a tractor is telescopic and has a first telescopic member 14 and a second telescopic member 15 which are able to carry out relative movements relative to one another along an adjustment axis 16. A locking pawl 19 may allow maximum possible relative movement or a limited amount of travel. Complete locking is also possible. For setting the various positions which the locking pawl 19 is able to assume relative to the telescopic members 14, 15, a fixing device 31 is provided which takes account of the respective stop regions 24, 30 for the locking pawl 19 or which, for the purpose of allowing the entire relative movement between the maximum limits, may be disengaged from the locking stops 23. This measure, in addition to permitting standard adjustment within the limits of the usual floating movement, allows a limited floating movement. Furthermore, it achieves complete locking and fixing in this position.

Abstract: The process for separating an aromatic from an entry hydrocarbon mixture also containing nonaromatics, by an extractive distillation method using an extractive distillation column with a selective solvent consisting essentially of an N-substituted Morpholine having substituents each of which contain no more than seven carbon atoms, includes distilling off the nonaromatics from the top of the extractive distillation column as a top product, drawing the aromatic and selective solvent from the extractive distillation column and subsequently separating the selective solvent from the aromatic in a separator column. The extractive distillation column is provided with an additional column portion for separation of a selective solvent residue from the separated nonaromatics without a separate top product distillation column.

Abstract: The method of obtaining a pure aromatic hydrocarbon from a hydrocarbon starting mixture includes extractively distilling the hydrocarbon starting mixture with a selective solvent; feeding the sump product of the extractive distillation through a first and second auxiliary boilers connected in series to form a cooled sump product at a temperature from 105.degree. to 120.degree. C.

Abstract: Process for obtaining a pure hydrocarbon from a starting material containing the hydrocarbon including performing an extractive distillation of the starting material containing the hydrocarbon in an extractive distillation column using a solvent comprising an N-substituted morpholine having substituents with no more than seven carbon atoms; feeding the sump product of the extractive distillation column into a distillation separator column at an entry point in a center portion of the distillation separator column; distilling off the hydrocarbon from the top of the distillation separator column but advantageously returning a minor portion of it as a reflux; drawing off solvent from the sump of the distillation separator column; feeding the solvent drawn off from the sump of the distillation separator column into an evaporator to form a vapor in the evaporator at the pressure, p.sub.2, the pressure p.sub.2 in the evaporator being lower than the pressure p.sub.

Abstract: A process for separating an aromatic from a mixture containing also nonaroma includes distilling off the nonaromatics from the top of the extractive distillation column as a top product, drawing the aromatic and selective solvent from the extractive distillation column and subsequently separating the selective solvent from the aromatic in a separator column. The extractive distillation column is provided with a separate top product distillation column for recovery of a selective solvent residue from the separated nonaromatics. The entry hydrocarbon mixture is heated prior to admission to the extractive distillation column by an indirect heat exchange with selective solvent drawn from the separator column and heated to a temperature of from 130.degree. to 150.degree. C.The heated entry hydrocarbon mixture is depressurized to form a liquid phase and a vapor phase and these phases are separately fed into the extractive distillation column, the vapor phase entry point being below the liquid phase entry point.

Abstract: A method of separation of aromates from hydrocarbon mixtures by extractive distillation with a selective solvent, includes introducing a hydrocarbon mixture into the extractive distillation column, distillating out non-aromate components of the introduced hydrocarbon mixture from a head of the extractive distillation column, withdrawing aromates together with a used solvent from a sump of the extractive distillation column and supplying to a driving-out column, separating the aromates from the solvent in the driving-out column, withdrawing the aromates as a head product and the solvent as a sump product from the driving-out column, reintroducing the withdrawn solvent into the extractive distillation column, the withdrawing of the solvent from the driving-out column including withdrawing only part of the solvent with a high temperature required for the complete aromate driving-out from the sump of the driving-out column, while a rest of the solvent with a certain aromate content and a lower temperature is with