Abstract: The invention relates to a subassembly for a cockpit of a motor vehicle, having a heating or air-conditioning housing which is arranged in the center console and has at least two housing parts and at least one air guide duct for guiding air at a controlled temperature to air outlet openings arranged in the cockpit. The subassembly includes a T-shaped structural unit, on which a large number of functional components of the cockpit can be mounted formed from an air guide duct having a shell-like duct component and the housing. The shell-like duct component can be covered to form the air guide duct. The present invention further relates to a method of producing the subassembly.

Abstract: An instrument panel for a motor vehicle comprises structural parts that, with the exception of the space required for the components of an air temperature conditioning system including at least one of a heater and an air conditioner, virtually completely fill the interior of the instrument panel. The structural parts are shaped to form air duct.

Abstract: A multi-fluid heat transfer device having a plate stack construction is disclosed which includes several plates which are stacked above one another and are provided with openings, through which several thermally interacting fluids can be guided. A construction is provided which consists of at least one first and at least one second flow duct plate unit which are arranged in the plate stack in an alternating manner, as well as of an intermediate connection cover plate unit, the first flow duct plate unit having one group and the second flow duct plate unit having two separate groups of respective side-by-side flow duct openings. Furthermore, connection duct openings for forming one distributor duct pair and collector duct pair respectively for each group of flow duct openings are placed in all plate units. As a result, a compactly constructed heat transfer device of a high heat transfer output is implemented by means of low manufacturing expenditures.

Abstract: Heat transfer device of a stacked plate construction has a stacked plate construction consisting of alternately stacked flow duct plate units with flow duct openings and connection duct openings as well as connection cover plate units with connection duct openings provided such that two separate fluid flow systems are formed. The equal-sided connection duct openings overlap only by means of an interior portion with the equal-sided ends of the flow duct openings, whereas, by means of an exterior portion, while forming a respective connection conduit, they extend in the area outside the flow duct openings. This implements a compact plate stack construction with an optimal connection geometry for very low pressure losses.

Abstract: A gradiometer for measuring magnetic field gradients has two SQUID loops lying in a SQUID loop plane with a flux concentrator lying in a flux concentrator plane parallel to the SQUID loop plane. The flux concentrator body is mirror symmetrical with respect to a plane of symmetry perpendicular to the SQUID plane and the flux concentrator plane along a basis line connecting the centers of the SQUID loops.

Abstract: A method and a device for the draw expansion of metal tubes of oval cross-section uses expansion elements drawn unidirectionally through metal tubes by means of draw elements. The expansion elements are fastened to the draw elements by suspension devices which have a hammer-like contour. The draw elements are preferably made of a rod-shaped material. An apparatus of the invention is an apparatus for mechanically expanding metallic tubes, in particular tubes in heat exchangers. Each individual tube to be expanded is held in at least one holding device and passed through by a drawing mandrel with an expanding element. To prevent jamming of the expanding element in one of the holding devices, the holding devices are provided with lateral guides which are resiliently compliant outward in the radial direction. When the expanding element passes through the metallic tube, the tube is expanded in the radial direction.

Abstract: A process for the preparation of 4-hydroxy-1,2,2,6,6-pentamethylpiperidine (HPMP) from 4-oxo-2,2,6,6-tetramethylpiperidine (TAA) is described, in which TAA is first reduced to 4-hydroxy-2,2,6,6-tetramethylpiperidine (HTMP) by means of catalytic hydrogenation in water, the resulting crude solution, if desired after concentration by distillation, is reacted with formaldehyde or paraformaldehyde in at least 20% molar excess, and with formic acid, and the crude product melt separated from the reaction mixture is worked up by distillation.

Abstract: A heat exchanger is disclosed which has a collecting pipe having formed therein at least one slot whereby the slot lies in a plane roughly perpendicular to the collecting pipe longitudinal axis. A flat pipe, which is capable of accommodating a fluid, a partition, or the like can be inserted into the slot, the narrow sides of the slot being limited by parallel-running slot walls of the collecting pipe which extend roughly along a tangent to a circle around the pipe longitudinal axis. The slot length, determined by the spacing between the slot walls, corresponds at least to the pipe inner diameter. A method of making a slot in a collecting pipe also is disclosed whereby in order to produce the smallest possible pipe diameter and high compressive strength, a stable and seal-tight connection of a laterally issuing structural part is ensured.

Abstract: A transport vase which has a moisture container for storing cut flowers. The moisture container is constructed of an outer flexible wrapper which forms a relatively thin water-tight pouch. An absorbent material is positioned within the flexible wrapper and the absorbent material can be saturated with water or liquid nutrients.

Abstract: A heat exchanger, produced by the insertion of welded pipes into a rib pack, has a good connection between the rib pack and the pipes after expansion of the pipes. An optimal contact of the pipes against the passages in the cooling fins of the rib pack is achieved because the weld base of the welded pipe lies in a recess. The recess is formed by reduction of the wall thickness of a strip material from which the welded pipe is produced.

Abstract: A method and a device for the draw expansion of metal tubes of oval cross-section uses expansion elements drawn unidirectionally through metal tubes by means of draw elements. The expansion elements are fastened to the draw elements by suspension devices which have a hammer-like contour. The draw elements are preferably made of a rod-shaped material. An apparatus of the invention is an apparatus for mechanically expanding metallic tubes, in particular tubes in heat exchangers. Each individual tube to be expanded is held in at least one holding device and passed through by a drawing mandrel with an expanding element. To prevent jamming of the expanding element in one of the holding devices, the holding devices are provided with lateral guides which are resiliently compliant outward in the radial direction. When the expanding element passes through the metallic tube, the tube is expanded in the radial direction.

Abstract: A process is described for the preparation of hydroxybenzylphosphonates of the formula I ##STR1## which involves A) reacting a phenol of the formula II ##STR2## with an amine of the formula III ##STR3## formaldehyde or paraformaldehyde and a protonic acid H.sub.n A to give a salt of the formula IV ##STR4## B) distilling off the water of reaction which forms, and C) reacting the reaction mixture, or the salt IV isolated therefrom, with a trialkyl phosphite of the formula ##STR5## in which H.sub.n A is an organic or inorganic acid having n protons,n is 1, 2, 3 or 4,R.sub.1 and R.sub.2 independently of one another are C.sub.1 -C.sub.12 alkyl or C.sub.5 -C.sub.7 cycloalkyl,R.sub.3 and R.sub.4 independently of one another are C.sub.1 -C.sub.12 alkyl or form, together with the nitrogen atom attached to them, a piperidyl or morpholinyl radical, and R.sub.5, R.sub.6 and R.sub.7 independently of one another are C.sub.1 -C.sub.

Abstract: A cooling apparatus especially for cooling high-temperature-superconducting lectronic components includes a cold gas cooling machine, such as a Stirling machine, thermally connected to a pressure vessel serving as a cold reservoir vessel. The pressure vessel contains a working medium having a triple point in the temperature range from about 60K to about 90K and a critical temperature at least as high as the maximum operating room temperature of the apparatus. The working medium is propane, for example. A cooling surface of the electronic component is thermally connected to the pressure vessel. In the method of operating the apparatus, the electronic component does not require continuous cooling. During a charging or refrigerating phase, the cooling machine freezes the working medium. Then during a useful cooling phase, the cooling machine is switched off and the electronic component is operated while being cooled by the frozen working medium.

Abstract: A heat exchanger, particularly for motor vehicles, including a collecting tank and a metallic tube plate which has a primary side, a secondary side, and collars which are formed on it, and in which collars tubes are to be held and sealed. Neighboring collars (17, 19) are alternately directed towards the primary side (22) and towards the secondary side (23). In other words, collars disposed side by side are alternately formed in the direction of the air side and of the water side, whereby the distance between the collars can be reduced to a minimum.

Abstract: In the case of a filter for an air-conditioning or heating system for a motor vehicle, it is provided that the filter body is formed of a material which is arranged in several layers and is coated with an adsorption agent and, at least on its air outlet side, is covered with an air-permeable textile flat shaped structure.

Abstract: A plastic radiator tank for heat exchangers of internal-combustion engines, particularly for radiators of commercial vehicles, having at least one connection tube for a heat exchange medium. The connection tube has an interior wall and includes a reinforcement on the interior wall. The reinforcement comprises webs which project toward the inside of the connection tube from the interior wall.

Abstract: A spacer for use in connecting the edges of panes of insulating glass, panel walls or the like is coextruded in form of a box-like body together with sealing lips and sealing strips. Its body is preferably composed of a polypropylene filled with glass fibre or mineral powder; its sealing lips of an elastomer and its sealing strips, which effect the adhesion and sealing of the panes or panel walls, preferably of a butyl rubber. The surface portion of its body which is exposed in the application thereof is provided with a vapor sealant such as, for example, a PVDC coating or an adhered metal foil to preclude the occurrence of condensation of water between the panes, wall panels or the like which it serves to space.

Abstract: A process for the production of alkyltin thiocarboxylic acid esters from alkyltin halides and thiocarboxylic acid esters in the presence of an acid acceptor, which process comprises carrying out the reaction continuously in a reaction system comprising 1 to 5 agitator vessels with an average dwell time of 1 to 60 minutes, at a constant pH value in the range from 3 to 8, and in a temperature range from 40.degree. to 80.degree. C. and separating the product drawn off from the reaction system from the aqueous phase and subsequently drying it.The alkyltin thiocarboxylic acid esters obtained by the process of the invention are used for stabilizing homo- and copolymers of vinyl chloride.

Abstract: An immunoradiometric assay in which an antigen is reacted to its specific antibody, which complex is then separated and further reacted with a second, universal antibody. This second, universal antibody contains a chelating moiety, such as transferrin, capable of binding specifically and strongly short-lived radionuclides. The second complex, once formed is reacted with a radionuclide and the radio-activity is measured, determining thereby the quantity of the unknown antigen originally present.