baber/WOPTO huggingface dataset:
Patent DE-3808342-A1 (DE)
Title: Two-stroke internal combustion engine with self-ignition and secondary expansion
Inventor: KLAUE HERMANN DR ING
IPC: F02B41/08
Filed: 1988-03-12
Abstract: The subject of the present application is a two-stroke internal combustion engine by means of which an improved efficiency is obtained through secondary expansion of the working gases. On both sides of the working cylinders the engine has oscillating pistons in longitudinally arranged divided cylinders, which represent continuations of cylinders which on one side of the engine control the start of the inlet and on the other side, the end of the exhaust, thereby preventing scavenging losses. The rear sides of the oscillating pistons move in the oil-wetted chamber of the crankcase. The said two-stroke internal combustion engine is consequently lubricated like a four-stroke engine. Due to the short connecting ports between oscillating piston working chambers and the displacements of the working pistons intermediate cooling devices on the supercharger side are superfluous and an excessive pressure differential, which would reduce the net efficiency of the secondary expansion, can thereby be prevented on the secondary expansion side. <IMAGE>
Patent DE-3811326-A1 (DE)
Title: Reversible winding system for exchangeable bobbins
Inventor: PROSCH DIETER
IPC: B65H75/28
Filed: 1988-04-02
Abstract: The pull cords (6) of a removable concertina blind (7), to the ends of which touch-and-close band strips (4) are fastened, are wound onto bobbins (2) which are covered with a corresponding (for example, tufty part/touch-and-close part) touch-and-close band (3). The winding bobbins (2) are mounted on a shaft (10) which is supported in bearings (9) connected firmly to the building. The mounting and dismounting of the concertina blind take place by respectively applying and lifting off the touch-and-close band strips (4) onto and from the touch-and-close band coverings (3) of the bobbins (2). The same principle of a reversible winding system can be used in general, for example on ink-ribbon spools for typewriters. Bobbins strips of a flexible material which are adhesively bonded to the shaft (10) can also be used as spools, and the total width of the strips is less than half a shaft circumference and the strips have in each case two parallel flat projections projecting at right angles to the shaft axis. <IMAGE>
Patent DE-3814055-A1 (DE)
Inventor: NEAGLE WILLIAM DR
IPC: C10M141/08
Filed: 1988-04-26
Abstract: A method of inhibiting the corrosion of copper or of a metal containing copper, comprising contacting the surface of the copper, or copper containing alloy with a corrosion-inhibiting amount of a mixture of a compound having the formula A:   <IMAGE> wherein R1 is C1-C19 straight- or branched chain alkyl, C5-C12 cycloalkyl, C7-C13 aralkyl, optionally substituted C6, C10 or C14 aryl, a monocyclic heterocyclic residue having up to 5 ring carbon atoms or a residue of formula I:            -(CH2)n-CHO  I  where n=1-6:  and a compound having the formula B            R2NH2        B wherein R2 is C1-C19 straight or branched chain alkyl, C5-C12 cycloalkyl, C7-C13 aralkyl, optionally substituted C6, C10 or C14 aryl, a monocyclic heterocyclic residue having up to 5 ring carbon atoms or a residue of formula II: -(CH2)mNH2II
Patent DE-3816305-A1 (DE)
Title: Back-protection means for a ladder
Inventor: BISSINGER HEINZ
IPC: B65D88/08
Filed: 1988-05-13
Abstract: The invention relates to a ladder, in particular a ladder for climbing silos, having hoops and connecting straps, which extend along the ladder and enclose the same. The strings of the ladder have longitudinally directed guide grooves. The back-protection means comprises individual back-protection portions, the hoops of which have retaining bodies which can be guided in the guide grooves and can be fixedly connected thereto.
Patent DE-3817800-A1 (DE)
Title: Process and apparatus for the production of a fibre-reinforced web of synthetic resin, especially a prepreg
Inventor: OLBRICH KURT
IPC: B29C70/50
Filed: 1988-05-26
Abstract: The apparatus contains a feed device (13, 30) for a fibre web (18, 32), and furthermore an impregnating device (14, 28) for impregnating the fibre web (18, 32) with a mass of synthetic resin (20, 34). The impregnating device contains, furthermore, a calibrating device (94) for the impregnated fibre web (18, 32). To improve the impregnation operation, the impregnating device (14, 28) is equipped with an impregnating bath (70) which contains the mass of synthetic resin (20, 34) and through which at least one fibre web (18, 32) can be guided, a calibrating device (94) being located at an outlet orifice (92) of the impregnating bath (70). <IMAGE>
Patent DE-3820624-A1 (DE)
Title: Device for supplying power to equipment
Inventor: BECKER JOHANN DIPL ING
IPC: H04M19/08
Filed: 1988-06-17
Abstract: The invention relates to an ancillary telephone equipment power supply from the telephone line, comprising an energy converter and a start-up circuit which are inserted into the current loop of the telephone line, two switching elements which, in the inactive condition, have a high forward resistance in one current flow direction and a low forward resistance in the opposite current flow direction but which can be switched through in the active condition being connected in series in the opposite direction in one current path and the voltage supply (UV) being extractable at the connection point of these controllable switching elements and at the connection point of two diodes whose other terminal is connected to the input or output of the looped-in power supply.
Patent DE-3820705-A1 (DE)
Inventor: HORN PETER DR
IPC: C08G18/38
Filed: 1988-06-18
Abstract: The invention describes thermocurable mixtures which have a long shelf life at room temperature and contain surface-modified polyisocyanates and compounds containing at least two hydrogen atoms which are reactive toward isocyanate groups. In the mixture, the polyisocyanates are in the form of discrete particles in the compound containing reactive hydrogen atoms, the polyisocyanate particles being deactivated on their surface, to the extent of from 0.1 to 20 equivalent percent of the isocyanate groups present, by means of a reaction product prepared from one mole of preferably one aliphatic, cycloaliphatic and/or aromatic diamine having 2 to 32 carbon atoms and 1.5 to 2.5 mol of an organic monocarboxylic acid or an anhydride thereof having at least 6 carbon atoms or an aryl sulphonic acid. The mixtures are used, in particular, for the production of urethane- and/or urea-containing films.
Patent DE-3821527-A1 (DE)
Title: Lockable differential for motor vehicles
Inventor: WINKAM GAMJAD
IPC: F16H48/30
Filed: 1988-06-25
Abstract: A lockable differential (bevel gear differential 1) for motor vehicles with an adjusting device (28, 38, 44) is described. A ratio-locking friction clutch (9) is actuated by expansion of two shift rings (14a, 14b) in a circumferential direction by way of a camshaft (11), which is supported in a housing cover (12) of the differential (bevel gear differential 1). The two shift rings (14a, 14b) have intermeshing ramps (15b) and recesses (15a), which convert the rotational movement introduced into an axial movement for shifting of the friction clutch (9) by way of pressure pins (20). The shift rings (14a, 14b), arranged on the outer circumference of the differential casing (5) are supported thereon by way of axial thrust bearings (17, 18). An increase of the adjustment travel due to wear or due to tolerances in the actuation is automatically rectified by the adjusting device (28, 38, 44), which acts on a Bowden cable actuation outside the bevel gear differential (1). The adjusting movement is performed by an adjustment, automatically spring-acting in one direction, on one end of a Bowden cable sheath (24), which encloses a bowden cable (21). Figs. 4, 5 and 6 show embodiments thereof. <IMAGE>
Patent DE-3825091-A1 (DE)
Title: Variable flexible drive
Inventor: SEFRIN WILLI DIPL ING
IPC: F16H9/14
Filed: 1988-07-23
Abstract: The intention is to propose a variable flexible drive with two fixed pulleys and a double adjustable pulley (16) which is arranged between these and is supported in axially movable fashion on one side on a pivotable support (18) and no alignment errors of the tensile transmission element are to arise from an adjustment operation. As a solution, it is proposed to displace the support (18) axially relative to the adjustable pulley (16) as a function of the extent of the pivoting travel of the adjustable pulley (16), in particular by means of a cam coupling (38) with conical or curved cams (46). Flexible drives of this kind are used especially in agricultural machines, e.g. combine harvesters. <IMAGE>
Patent DE-3827492-A1 (DE)
Title: Method for establishing conference connections in a computer-controlled communication system
Inventor: WEISS ALBERT
IPC: H04M3/56
Filed: 1988-08-12
Abstract: With this method, a subscriber initiating a conference connection can establish an enquiry call to a subscriber not involved in the conference connection after the conference connection has been established. To return the subscriber originally initiating the conference connection into the conference connection, a computer control (ZR) activates a timing section, beginning with the initiation of the enquiry call, and, after a predetermined time has elapsed, checks the state of connection of the subscriber initiating the conference connection. If the enquiry call persists, the computer control (ZR) establishes a connection to the said subscriber and transmits an information item pointing out the conference connection. <IMAGE>
Patent DE-3829806-A1 (DE)
Title: Portable miniature solar-powered system
Inventor: HABLIZEL FRITZ
IPC: H02S40/38
Filed: 1988-09-02
Abstract: A portable miniature solar-powered system serves for the use of electrically driven miniature devices such as miniature broadcast radio receivers, world-wide receivers, walkie-talkies and the like, and consists of a housing base (11) with carrying handle (7), having a solar panel (3) on the front side and a built-in accumulator (5) as well as a holder (8) for the device (Figs. 1 and 4). <IMAGE>
Patent DE-3843781-A1 (DE)
Title: Device for controlling the transverse position of a running web, especially a paper web
Inventor: STRAETER HANS-DIETER DR
IPC: B65H23/02
Filed: 1988-12-24
Abstract: A description is given of a device for controlling the transverse position of a running web, having a light source arranged on one side of the web, whose light is partially shadowed by the web and partially received by a single light guide in such a way that the light energy received by the light guide is a measure of the instantaneous transverse position of the web. Compared with known devices, the invention is especially characterised by simplicity of construction and high measuring accuracy, even in contaminated atmospheres such as can occur, especially in paper webs.
Patent DE-3844045-A1 (DE)
IPC: F16L21/00
Filed: 1988-12-28
Abstract: The invention relates to a pipe joint for propulsion pipes or the like, having joining regions on the respectively free ends (111) of the individual pipes (1, 2). To form these joining regions, the pipe wall is set back on at least one free end (111), in steps of corresponding length and depth as a mirror image of the free end of the meeting pipe which overlaps it. According to the invention, annular supporting elements (3, 4), located opposite the steps formed by the insertion end (11) and by the socket end (21), are arranged in mirror image form, or are offset with respect to one another, on the outer and inner circumference respectively of the insertion end (11) and of the socket end (21).
Patent DE-3844410-A1 (DE)
Title: Inversion of the alcohol configuration in alpha-amino alcohols via intramolecular substitution of the sulphonate groups
Inventor: LINDNER WOLFGANG DR
IPC: C07C213/08
Filed: 1988-12-30
Abstract: The invention relates to a process for inverting the configuration of optically active (R) or (S) amino alcohols of the general formula  R<2>-CHOH-CH2-NH-R<1> The process according to the invention is characterised in that an optically active compound in the (R) or (S) configuration of the general formula <IMAGE> is prepared, subjected to thermal treatment under neutral or acidic conditions, and so converted into an optically active compound of the general formula <IMAGE> resulting in an inversion of the configuration of the substituents on the secondary carbinol carbon relative to the configuration of the starting material, whereupon this isoxalidinone ring can be cleaved while retaining a mirror image of the form of the alpha-amino alcohol given at the very beginning. In comparison with the existing processes, the process described is very simple and provides high yields and an excellent optical purity of the products.
Patent DE-3902725-A1 (DE)
Title: Treatment couch, especially massage couch
IPC: A61G13/12
Filed: 1989-01-31
Abstract: There is proposed a treatment couch, especially massage couch, which has a body support surface and an adjustable head support in which the head support (13) can be rotated about a longitudinal axis (14) for extending the possible applications and two head support surfaces (16, 17) of the head support (13) have different inclinations relative to the body support surface (6, 7) with intersection lines (16a, 17a) that extend in parallel with one another but are arranged perpendicularly to the axis of rotation (14), in each case in the position directed upwards of the particular head support surface (16, 17). <IMAGE>
Patent DE-3917360-A1 (DE)
Inventor: ZELLER ADALBERT
IPC: F24F11/76
Filed: 1989-05-29
Abstract: In a device for controlling a volumetric rate of flow in a guide tube (1), in particular for controlling the volumetric flow of air in a ventilation system or an air-conditioning plant, an adjusting flap (5) is to be arranged variably, in particular rotatably about an axis of rotation (6), in the guide tube (1). In this case, the guide tube (1) is assigned an adjusting device (3) for the adjusting flap (5) and the adjusting device is assigned a controller (4) which can be controlled by a control unit, in particular a room thermostat.
Patent DE-3923317-A1 (DE)
Title: Electric fuse capsule for vehicle battery cell - has sheathing material spaced either side of fuse wire enclosed by insulating housing
Inventor: REX HANS-GUENTER DIPL PHYS
IPC: H01H85/17
Filed: 1989-07-14
Abstract: The fuse capsule has a fuse wire (1) extending between 2 opposing terminals (5), enclosed at a given distance by an insulating housing (2). The fuse wire (1) is sandwiched between a pair of insulating sheathing layers at a given distance from it, exhibiting a melting point within the vicinity of the fuse wire (1) melting point. Pref. the melting point of the sheathing layers lies within (+,-)200 degrees C of the melting point of the fuse wire (1). The fuse wire (1) is pref. made of Cu and the sheathing layers are made of mica, the housing (2) pref. made of the same material as the sheathing layers. ADVANTAGE - Low-cost mass prodn.
Patent DE-3925281-A1 (DE)
Title: Connecting rod with loop band - has looped ends of band each engaging behind loop bolt for easy assembly
Inventor: RATHJE VOLKER DIPL ING
IPC: F16C7/02
Filed: 1989-07-31
Abstract: The connecting rod has a substantially pressure-biassed shaft extending between a piston bolt eye and a lift pin eye.  At least one tensioned looped band is slung round the piston bolt eye with its loop ends fixed on the side of the lift pin eye remote from the piston bolt eye. These loop ends (6,7) enclose loop bolts (8,9) which run axially parallel to the lift pin eye (2) and engage behind lugs (10,11) on the side of the lift pin eye through the areas which are free of the loop belt (5). USE/ADVANTAGE - Easier automatic assembly of the loop belt and connecting rod is possible.
Patent DE-3927364-A1 (DE)
Title: Alternative shoe fastening system - uses combination shoe lace and hooked pile fastener and consists of strip fitting into slot, and eyelets with lace
Inventor: WANG JOHNNY
IPC: A43C11/00
Filed: 1989-08-19
Abstract: The alternative-choice shoe-fastening is a combination of a shoe-lace (10) and hooked pile (20) fastening. Those shoe parts (12a, 12b) containing the shoe-lace eyelets (14) have slits (26) into which connections (24) supporting hooked pile fastening pieces (22) are fixed. The connections (24) are in the form of strips (24) on one shoe part (12b) facing the hooked-pile fasteners (22) on the other shoe part (12a) with a detachable fastening (28). The fastening (28) consists of a pin (32) fixed to the strip (24) with a fatter, semi-spherical head (30). USE/ADVANTAGE - The shoe fastening enables the wearer to do it up and undo it quickly by means of the hooked-pile fastener part, and to tie it securely by the shoe-lace part.
Patent DE-3941611-A1 (DE)
Title: Vehicle fan fluid coupling - has locking eccentrics in housing pressing against shaft to connect drive
Inventor: KUDELLA BERNHARD DIPL ING
IPC: F16D35/00
Filed: 1989-12-16
Abstract: The friction-type fluid coupling has a disc fixed to a driving shaft. It is accommodated in a liquid-filled chamber in a housing turning on the shaft and equipped with external fan blades. It is particularly for use with an engine-cooling fan. A lock prevents relative movement between the driving shaft (4) and housing (1). It comprises one or more eccentrics (10) turning in the housing and pressing against the shaft, to clamp the two together in the direction of rotation of the latter. ADVANTAGE - The fan can be kept in operation if the coupling fails.
Patent DE-4005025-A1 (DE)
Title: Improving transformation rate for Bacillus licheniformis host - by incubating foreign DNA with host cell modifying enzyme before transfer
Inventor: GAMON KONRAD DR
IPC: C12N1/21
Filed: 1990-02-19
Abstract: The number of transformants produced when transferring foreign DNA into a receptor microorganism is increased by (1) releasing restriction and modification enzymes from a receptor (Bacillus licheniformis) cell; (2) inhibiting the restriction enzymes: (3) the modification system is allowed to act in vitro on the foreign DNA in presence of a c-factor; then (4) transferring the modified DNA by standard methods into the same receptor organism.  Also new are (A) cell lysates with methylase activity obtd. from B. licheniformis DSM 641,3406 and/or 3407 (or their mutants or variants) by growing the cells mechanically or enzymatically disintergrating them, sepn. of large components or high mol. wt. materials by filtration and/or centrifugation, and (B) isolated DNA contg., at least once, the recognition site 5'-GCNGC-3', which is methylated in vitro by the cell lysate. USE/ADVANTAGE - Provides improved succes rate in B. licheniformis transformants.
Patent DE-4005303-A1 (DE)
Title: Shrink fit cryogenic conduit coupling - has female coupling section with higher coefficient of expansion than male section
Inventor: BLUMENBERG GUENTHER
IPC: F16L59/21
Filed: 1990-02-20
Abstract: The plug-in connection for cryogenic conduits is configured as a male/female connection. When the conduit is taken into service, the female part (6) which has a higher coefficient of expansion shrinks onto the male part consisting of invar steel, and seals the connection. The male part is constructed as a part that can be slipped or screwed onto the end of the cryogenic conduit, and consists of a first (13) and a second (14) sleeve, which are mutually connected by means of a bellows. The sleeves and the bellows are seated on a support pipe. @(9pp Dwg.No.1/1)@.
Patent DE-4009455-A1 (DE)
Inventor: REITER ERICH
IPC: D03D35/00
Filed: 1990-03-23
Abstract: Process for weaving a ribbon on a needle ribbon-weaving machine with two weft needles (26, 28) which work in opposite directions. In one embodiment of a process for manufacturing a ribbon, a middle part (1) is woven from a weft multithread and a weft monothread (12, 10), while two edge parts (5, 6) are woven from a single weft multithread (12). The ribbon has high transverse strength but the edges are soft. A main shed (39) for both weft needles (26, 28) is formed from the warp threads (3) of the middle part (1). A partial traverse shed (38), through which only the weft needle (28) for the multithread (12) is inserted, is formed for each of the two edge parts (5, 6). The heads (14) of weft loops which are interlaced with the edge part weft threads (8) are secured by a row of stitches (18) located at the outer side of the edge part. The heads (24) of weft loops which are interlaced only with the middle part weft threads (3) are secured by a row of stitches (20) located at the outer edge of the middle part (1) and on the inner edge of the adjacent edge part (5). In a second embodiment for weaving a ribbon with two weft needles working in opposite directions, the ribbon is woven by inserting both weft needles into a common shed. The heads (60, 66) of the weft loops inserted in opposite directions are secured by two rows of stitches (62, 68) each formed from an auxiliary thread and located at the two outer edges of the ribbon. This ribbon has no edge parts but is absolutely symmetrical, and it has outer edges which are protected by the two rows of stitches (62, 68) and are soft.
Patent DE-4010980-A1 (DE)
Title: Tool to abrade or polish inside tubes, etc. - has rectangular strips of abrasive plus binder mounted between two discs on rotating shaft so as to have convex exterior working surface
Inventor: KNORR GOTTFRIED DIPL CHEM DR R
IPC: B24D13/02
Filed: 1990-04-05
Abstract: A tool is designed to abrade or polish the inside surfaces of tubes, cylinders or other hollow shapes of metal of plastic materials. The tool is made up of segments of abrasive material plus cellular polyurethane elastomer binder; these are strips at least 4 mm thick with different external shape, their dimensions depending upon their application; they are fixed on to the tool so as to take up the shape required for the application concerned. ADVANTAGE - The tool is self-centering. It is suitable for use with surfaces of various materials including stainless steel.  Various radii can be treated. As the segments wear out they regenerate their abrasive action. The segments are readily changed.
Patent DE-4017721-A1 (DE)
Title: Telescopic suction tube for vacuum cleaner - has sealing sleeve pref. of polyamide
Inventor: CORDES AUGUST
IPC: A47L9/24
Filed: 1990-06-01
Abstract: A telescopic vacuum cleaner suction tube has a sealing sleeve (10) fixed on the end of the inner tube (23), the novelty being that (a) the inner tube (23) is not narrowed in its sleeve fitting region; (b) the sleeve thickness is not greater than the radial play (S) between the inner (23) and outer (25) tubes; (c) the sleeve (10) has a circular peripheral sealing lip (19) which contacts the inner face of the outer tube (25); and (d) the sleeve (10) has a radially inwardly projecting support ring (17) which is axially offset from the sealing lip (19) towards the inner tube (23) end and which has a radial height less than the inner tube wall thickness. Pref. the sealing sleeve (10) consists of polyamide. ADVANTAGE - Compared with the suction tube described in DE2618065, the new tube is less expensive to mfr. and is free from suction power losses.