baber/WOPTO huggingface dataset:
Patent DE-3922725-A1 (DE)
Title: Envelope with tear off thread - has thread extension for gripping outside envelope
Inventor: PFLUGBEIL LUDWIG
IPC: B65D27/38
Filed: 1989-07-11
Abstract: The envelope (1) has a tear-off thread (3) underneath the edge (2) and fixed to the  inside.  An extension (4) to the thread (3) hangs out of the envelope (1) and is gripped for opening the envelope (1). When the tear-thread (3) is pulled up, the edge (2) of the envelope (1) is removed. USE/ADVANTAGE - A letter's envelope is opened tidily and exactly by means of a thread stuck inside the envelope.
Patent DE-3926463-A1 (DE)
Title: Rotary piston in IC engine - operates in combination with reciprocating piston
Inventor: KRUSCH JOSEF
IPC: F02B55/14
Filed: 1989-08-10
Abstract: The rotary piston IC engine has a rotary piston (12) which is circular in cross section. It has a circumferential recess working in conjection with an induction and compression piston (18). As the rotor passes the fuel-air mixture inlet the recess forms chamber and then proceeds through the compression and ignition phases to the exhaust gas outlet (5). USE/ADVANTAGE - Rotary piston engine in which the benefits of the rotary piston and the reciprocating piston principles are combined.
Patent DE-3927039-A1 (DE)
Title: Sea-water resistant recycled extrusions - produced by cutting sections in the hot extrusion, filling cuts with injected e.g. polyamide reinforcements and passing through gauging tool
Inventor: RYDMANN THEO
IPC: B29C48/16
Filed: 1989-08-16
Abstract: Reinforced thermoplastic sections are extruded continuously, and particularly from recycled material, using equipment in which reinforcing members of another suitable polymer with better mechanical strength (e.g. polyamide) are fed into the section as it emerges from the extruder. ADVANTAGES - The reinforced product (using recycled polymer material) is suitable for use in sea-water.
Patent DE-3934478-A1 (DE)
Inventor: FREI JOSEF
IPC: D21B1/02
Filed: 1989-10-16
Abstract: The present invention relates to a process for the preparation of domestic, industrial and other similar waste with extraction of cellulose materials, in which the waste material is subjected to a precomminution, magnetic separation, sorting and fractionation. The process is primarily characterised in that the light fraction consisting of paper, textiles and plastics is fed to a washing station and the washed suspended material passed to a pulper, that the ballast materials are removed by means of a filtering after treatment in the pulper and the cellulose particles which pass through the filter and are dispersed in the water are fed as pulp to a possibly adjacent paper mill directly or after the water is pressed out and the pressed-out cellulose particles are dried and recovered as powder.
Patent DE-3938312-A1 (DE)
Title: Generating source audio data
Inventor: FURUHASHI MAKOTO
IPC: G10H7/08
Filed: 1989-11-17
Abstract: In the generating process, an analog or digital input signal is fed to a comb filter, passing only the basic frequency and its harmonic oscillations for generating analog or digital output signals. The reflating signal sections are separated from the output signal and recorded.  To determine an interval of uniform analog signal portions, the analog signal is converted into a digital one by a Fourier transformation for generating second Fourier components. The phases of the latter are mutually matched, and another Fourier transformation is carried out. The periods of the peaks in the output data values are then determined.
Patent DE-4000005-A1 (DE)
Title: Prodn. of e.g. free-cutting tool with wear-resistant surface - involves dipping workpiece in metal melt to deposit successive layers and using shaped rollers to plastically deform them
Inventor: FABIAN DIETMAR DR
IPC: B05C3/09
Filed: 1990-01-02
Abstract: Prodn. of composite bodies by dip-coating the workpiece (3) at least partly in a metal melt (1), has the novelty that the melt comprises an alloy or an alloy and an metal-non-metal cpd., made from a high strength steel and/or a metal carbide, metal nitride, metal carbonitride or metal boride. The wear-resistant metal coating is formed in vacuum by deposition of successive coatings in a continuous process. After the crystallisation of the individual layers, the workpiece is periodically removed, rotated using a drive shaft (2) and subject to pressure contact with one or more cooled shaped rollers (4) to plastically deform the layer. USE/ADVANTAGE - Used for the prodn. of e.g. free-cutting tools. A layer with improved wear-resistance and refined structure is produced.
Patent DE-4004364-A1 (DE)
Title: Bleaching and delignifying pre-balanced cellulose - in two stages with peroxide activated with cyanamide or cyanamide salt, avoiding agents contg. chlorine
Inventor: STURM WERNER DR
IPC: D21C9/10
Filed: 1990-02-13
Abstract: Cl-free bleaching and delignification of cellulose pre-bleached with O2 and peroxide, or O2 and O3, involves a 2-stage treatment with peroxide activated with cyanamide and/or cyanamide salts. - In the first stage, the content of cyanamide and/or cyanamide salts is 0.05-0.5 (0.07-0.33) wt.%, and the peroxide content is 0.1-1 wt.%, both w.r.t. dry wt. of cellulose. In the second stage, the content of cyanamide is 0.01-0.3 (0.03-0.23) wt.%, and the peroxide content is 0.1-0.7 wt.%, w.r.t. dry wt. of cellulose. Both stages are at pH 10-12, solids content of 5-30 (7-20) wt.%, and 40-90 (55-80) deg.C, for 1-6h for each stage.
Patent DE-4007283-A1 (DE)
Title: Sealing profile for corrugated roof panel joints
Inventor: GRABE WERNER DR ING
IPC: E04D3/366
Filed: 1990-03-08
Abstract: Corrugated roof panels(9,10), made e.g. of ETERNIT (RTM), are joined and sealed by profiles (1) with a central rectangular web (2) and four prestressed arcuated ribs (3-6), where the upper ribs (3,4) are longer than the lower ribs (5,6) and have ripples (7) at the end. A string (8) is embedded in the web and is made of aramide, PE or glass fibre with a min.  thickness of 0.4mm and a min. tensile strength of 50 N. The profile itself is made of weather, chemicals and wear resistant elastomer (polychloroprene, EPDM, nitrile rubber).
Patent DE-4008139-A1 (DE)
Title: Kit for assembling wheel support for road vehicles
Inventor: BOEKENKAMP RAYMOND
IPC: B60T3/00
Filed: 1990-03-14
Abstract: The wheel support (1) for road vehicles consists of a kit comprising a number of generally flat elements (2a, 2b, 2c) which can be assembled into a stack. A stack of such elements has one or more stepped or inclined sides (5, 6) constituting a ramp, enabling a wheel to be driven up the stack onto a wheel supporting surface (7) at the top of the stack. The elements have interlocking members such as projections (3) which fit into corresponding recesses (4), so that each adjacent pair of elements in the stack is locked together and prevented from relative lateral movement when a wheel is driven onto the support. @(21pp Dwg.No.1/3)@
Patent DE-4013985-A1 (DE)
Title: Detachable mounting plate for plug-in chassis - has gapped ends to prevent jamming while fitting
Inventor: WISSEN AXEL DIPL ING
IPC: H05K7/14
Filed: 1990-05-02
Abstract: A component, or connector, mounting-plate (3) is set across the interior of a plug-in chassis (2). Usually, a slight upward tilt at either end jams the plate in the guides (4) set in the chassis sides. This is avoided by  introducing regular gaps (7) at the plate ends where they slide over the guides. The gaps permit the plate to tilt or rock without jamming.  After insertion the plate is fastened to the guides by means of screws (8) set in the chassis sides. USE - Where frequent service access is necessary for insertable and retractable switching cabinets and distributors.
Patent DE-4014283-A1 (DE)
Title: Mobile loader for forming or turning compost heaps - with loading bucket in which milling roller breaks up organic material
Inventor: GAIL JOSEF
IPC: C05F17/02
Filed: 1990-05-04
Abstract: For turning compost heaps and breaking up organic wastes, a wheel loader (1) has a transport bucket (2) at the front, to which is attached a milling roller (6) fitted on an arm (5) for raising and lowering it into the bucket. The roller is raised while the bucket is filled and then lowered to break up the contents and return them to the compost heap. USE/ADVANTAGE - Optimum composting conditions can be obtd..
Patent DE-4014913-A1 (DE)
Inventor: HORSTMANN MICHAEL DR
IPC: A61L15/00
Filed: 1990-05-10
Abstract: A transdermal therapeutic system built up in layers has an electrically insulating backing layer (1) which is impermeable to active substance, and two galvanic elements which are arranged in a manner insulated from one another. The skin-side electrodes of the galvanic elements bear layers consisting of material which absorbs moisture and, after admission of moisture, is ionically conductive. The layer of at least one of the skin-side electrodes contains a pharmaceutical active substance.
Patent DE-4020139-A1 (DE)
Title: Shutter in front of window - has individual slats anchored at their ends by face-side securing parts
Inventor: BAUER SIEGFRIED
IPC: E06B9/58
Filed: 1990-06-25
Abstract: The shutter has a securing arrangement comprising articulatedly connected horizontal profile bars of metal which at the ends extend into guide rails (10) for the shutter. At least one part of the profile bars has a securing part at their ends. On the face side of the profile bars are anchored projections (17, 18) extending out of the bar plane, and engaging behind an inner long fillet or an inner stage (14) with which the guide rails (10) are provided. The inner long fillet (14) is arranged at a distance from the opening of the shutter guide rail (10) which corresponds to at least half the depth of the guide space of the guide rail. USE - For securing a shutter.
Patent DE-4021607-A1 (DE)
Title: Filter element esp. dust filter with good in-use dimensional stability - comprise filter cells formed of inflated, parallel, surface contacting, fabric pockets
Inventor: SCHUMANN KLAUS
IPC: B01D29/11
Filed: 1990-07-06
Abstract: Filter element for gaseous and liq flows, comprising multiple filter cells formed of 'inflated', parallel, surface contacting, fabric pockets. The extent of contact between adjacent cell fabric surfaces is mutally dependent on each cell. To avoid partial overlap of filter surface, the cell wall sepn. prior to inflation in use, is constructed to be greater than the total elastic stretching of the cell walls under operational pressure. The outer transverse sections bridge the cell walls and work to maintain cell sepn.  by restraining without causing kinking of the fabric; these sections are preferably integrally formed to provide a continuous transition. The basic filter cell element can be used individually or as multiples, in filter pockets, socks or cartridges.  The filter fabric can be self supporting, chemically thermally, or pressure bonded non-woven material- preferably needle-bonded felt or fibre web. Pref also fabric laminated with microporous film or otherwise treated to give a siliconised, graphited, or PTFE finish. USE/ADVANTAGE - Dust filters. Filter cell with good in-use dimensional stability, retaining high surfacecapacity as high pressure difference, and able to be mfd from a range of filtration fabrics.
Patent DE-4026048-A1 (DE)
Title: Refuse dump underground securing structure
Inventor: PAURAT FRIEDRICH WILHELM
IPC: E21C41/16
Filed: 1990-08-17
Abstract: Seepage from a refuse dump is prevented by a drainage system formed by a row of bores (3) on each side of the dump. The bores slope downwards to a common service track (2) underneath the dump. Drain pipes are inserted in the bores and are attached to a sealing sheet so that they are embedded in it. A narrow slit is formed under the sealing sheet and is filled with a sealing compound.
Patent DE-4026305-A1 (DE)
Title: Copier with drive moving scanner in two directions - has signal generator supplying signal to detector according to speed of movement of scanner
Inventor: MORIKAWA TAKESHI
IPC: G03B27/50
Filed: 1990-08-20
Abstract: An image producer reproduces the original document placed on the copying panel on the recording medium. A scanner is assigned to the panel. A projector transfers the scanned image to the image producer. The scanner is moved in two directions to cover the original document. A detector ascertains the speed of movement on the basis of a signal supplied by a signal generator. - A confirmation arrangement establishes if the scanner is in a deceleration mode or not on the basis of the generated signal. A control stops the drive when the scanner changes from deceleration to acceleration mode or if it is ascertained that the detected speed of movement is equal to or smaller than a preset speed.
Patent DE-4035150-A1 (DE)
Title: Sliding door combination for flush cupboard fronts - includes at least one folding door section for easier access
Inventor: DUDEK GUENTER
IPC: E06B3/46
Filed: 1990-11-06
Abstract: The cupboard front is closed by sliding doors which have a folding element (2) associated with one or more of the sliding elements (1). The sliding and folding elements can be guided in the upper area in a full-length straight rail and in the closed state form a flush front surface. The sliding and folding elements can be operated independently of each other. ADVANTAGE - Easy access to the inside, whilst a smooth outside helps to prevent dust, etc. from entering the cupboard.
Patent DE-4039211-A1 (DE)
Title: Catalyst for recombination of hydrogen@ and oxygen@ esp. in accumulator - with support of mat hydrophobised by impregnation with silicone to increase life
Inventor: SCHULZ JUERGEN DR
IPC: B01J33/00
Filed: 1990-12-08
Abstract: Catalyst for recombination of H2 and O2, consists of a mat of hydrophobised support and catalytically active material. The mat is impregnated with silicone. A carbon mat, also impregnated with silicone, is placed on one or both sides of the mat. The mat is impregnated with 0.5-5, pref. ca. 2 (wt.)% silicone. The mat is immersed in a soln. of a silicon oil (pref. 2-8, esp. 3-5%) in an organic solvent, i.e. an ester or hydrocarbon, pref. petrol, then the solvent is removed by drying, pref. for ca. 1 hr. at 100 deg. C, and the impregnated mat is tempered, pref. for ca. 20 mins. at 250-370 deg. C, esp. under inert gas or in vacuo. USE/ADVANTAGE - Catalysts of this type are used to prevent the concn. of H2 and O2 in low maintenance and sealed batteries reaching dangerous levels. Impregnation with silicone gives permanent hydrophobic properties, ensuring that the catalytic activity is maintained over long operating periosp
Patent DE-4040995-A1 (DE)
Title: New N-tert.-butyl-maleimides - obtd. by reaction of the corresp. maleic anhydride with tert.-butylamine in soln. followed by cyclisation of the intermediate mono:amide
Inventor: BECK JUERGEN DIPL CHEM
IPC: C08F22/40
Filed: 1990-12-20
Abstract: N-substd. maleimides of formula (I) are claimed. In (I) R1, R2 = H or 1-5C alkyl. Also claimed is a process for the prodn. of (I), by rection of the corresp. maleic anhydride with approx. equimol. amts. of tert.-BuNH2 (II) in an organic solvent, followed by cyclisation of the initially-formed mono-(tert.-Bu)-maleamide. USE/ADVANTAGE - Provides new N-substd. maleimides, which are useful esp. as monomers for the synthesis of polymers. The claimed process gives (I) in high yield. N-Tert.-butylmaleimide (R1 = R2 = H) is specifically claimed (IA). The cyclisation reaction is carried out with NaOAc/Ac2O.
Patent DE-4101380-A1 (DE)
Inventor: HAHN ERWIN DR
IPC: C07D265/22
Filed: 1991-01-18
Abstract: Production of 4H-3,1-benzoxazine-4-ones of formula (I) in which: R<1> is hydrogen, C1-C4-alkyl, C1-C4-alkoxy, carboxyl, sulpho, nitro or halogen; R<2> is C1-C20-alkyl, phenyl or phenylalkyl with 1 to 4 C atoms in the alkyl group, whereby a phenyl nucleus may be substituted by one or two C1-C4-alkyl groups, C1-C3-halogen alkyl groups, C1-C4-alkoxy groups, C1-C3-halogen alkoxy groups, C1-C4-alkyl mercapto groups, C1-C3-halogen alkyl mercapto groups, carboxyl groups, sulpho groups, C1-C4-alkyl sulphonyl groups, C1-C3-halogen alkyl sulphonyl groups, nitro groups or halogen atoms; and n is 1 or 2; by the reaction of isato acid anhydrides of formula (II) with acyl halides of formula (III) in which X is chlorine or bromine, by conducting the reaction at an outside temperature of 215 to 280  DEG C and causing the reaction components (II and III) to react together for at least 4 hours at this temperature.
Patent DE-4102291-A1 (DE)
Title: Roller element for trolley - consists of large ball supported by set of smaller balls
Inventor: SAUM WILLI ING GRAD
IPC: B60B33/08
Filed: 1991-01-26
Abstract: The roller element is for a trolley or a movable workbench. It has a ball (1) rotatably held in a roller housing (3) and projecting downwards through an opening (20) in a cover plate (19). The upper half of the ball is supported by several smaller balls (5,6) which are positionally fixed but rotatably held in sockets (7,8). USE/ADVANTAGE - Roller element for trolley in which the friction effects on the large ball are reduced.
Patent DE-4105411-A1 (DE)
Title: Packing cushion for inside boxes - comprises four interconnected pads to form flat or corner padding
Inventor: SPICHALLA RUDI
IPC: B65D25/26
Filed: 1991-02-21
Abstract: The packing cushions comprise four square pads (T1,T2,T3,T4) which are joined together so that the edge length of the cushion thus formed is twice as long as the edge length of one pad. The pads have the same thickness as each other which is 0.1 to 0.5 times the largest edge length of one pad. The pads are connected together for articulated movement whereby the joints (St1,St2,St3,St4) are located on opposite edges of each adjoining pad. The axes of the joints are located in a single plane and the joints are designed so that they can be easily separated from each other. USE/ADVANTAGE - The pads can be used as flat packing cushions or as edge or corner packing.
Patent DE-4108286-A1 (DE)
Title: Prepn. of microencapsulated, silicone-contg. flakes or powders - comprises thin-film drying of mixt. of organo-polysiloxane and film-forming polymer at above the flocculation pt. of the latter
Inventor: ECK HERBERT DIPL CHEM DR
IPC: B01J13/04
Filed: 1991-03-14
Abstract: Prodn. of microencapsulated organopolysiloxane-contg. flakes or powder (I) comprises drying aq. mixts. contg. (a) not above 95 wt. % (w.r.t. total dry wt) organopolysiloxane(s) (II) with at least 2 Si-C linked organic gps/Si atom (on average) some of which can be replaced by Si-linked H, and (b) water-soluble, film-forming polymer(s) (b) has flocculation pt. (FT) = 20-98 deg. C or FT can be adjusted to 20-98 deg. C with additives, and the mixt. is dried by thin-film drying at a temp. above FT. The mixts. pref. dried in a drum drier at 80-130 deg.C. (II) has the formula R1R2SiO(SiR20)nSiR2R1 (with R = hydrocarbyl (opt. substd. with a gp. which is inert to water at the drying temp) or H (in which case each Si atom carrying H also carries at least one hydrocarbyl gp), R' = as for R, or OR" (with R" = H or 1-18C hydrocarbyl); n = 0 or a whole no) pref. a dimethylpolysiloxane with Me3Si0 or dimethylvinyl-siloxy end-gps. a trimethylsiloxy-terminated methyl-hydrogen-polysiloxane or dimethylsiloxane/methyl-hdyrogen-siloxane copolymer, a Me2HSi0-terminated dimethylpolysiloxane or a dimethyl-polysiloxane with Si-OH in each of the end gps. (b) is a cellulose ether with mean degree of substits. below 3 or PVA with hydrolysis no. 230-450 esp. methyl-hydroxyethyl-cellulose ether or methyl-cellulose ether with mean DS = 1.0-2.5, methyl-hydroxypropyl-cellulose ether with mean DS = 1.0-2.5 contg. 20-30 mol. % OMe gps. and 5-10 mol. % hydroxypropyl gps. or hydroxypropyl cellulose ether with mean DS below 3; or (b) has FT which is adjusted as above by addn. of salts, inert solvents, acids or bases, pref. completely or partly hydrolysed PVAC, copolymers thereof with ethylene, propylene, other vinyl esters, (meth)acrylic acid or derivs. thereof, or with dicarboxylic acids or derivs. thereof or PVP, polyoxazolines, starch and starch derivs. polyureas, polyurethanes, polyethers, polyamides, polyesters or polycarbonates. USE/ADVANTAGE - W.r.t. prior art spray-drying processes, the process is less costly in terms of energy consumption and equipment. (I) is useful after redispersion in water, as an additive for clay, gypsum, plaster and concrete and for the prodn. of lime-sand brick and paints etc. for waterproofing bulk materials and as a foam suppressant in aq. sys
Patent DE-4117209-A1 (DE)
Title: Novel hot steam-cooled nuclear reactor - with all ceramic fuel elements, heat transfer using steam, and annular core
Inventor: SCHULTEN RUDOLF PROF DR
IPC: G21C9/02
Filed: 1991-05-27
Abstract: A nuclear reactor, with all-ceramic fuel elements and heat transfer using steam, is new. Pref. the reactor has an annular core located in two concentric reactor vessel shells made of steel, the annulus width and the power density being selected such that, on failure of reactor cooling, heat is removed outwardly and inwardly sufficiently by radiant heat transport to avoid exceeding a core temp. of 1600 deg.C. ADVANTAGE - The reactor is inherently safe since the ceramics are resistant to high temps and corrosion and since the core design limits the peak temp. to 1600 deg.C. Additionally, the average power density can be increased to 5 MW (thermal)/cu.m. or more.
Patent DE-4121040-A1 (DE)
Title: Safety system for motorways - with detectors for vehicles travelling in wrong direction and with immobilising control for those vehicles
Inventor: PANNEK ALOIS
IPC: B60T7/18
Filed: 1991-06-26
Abstract: The motorway is fitted with roadside detectors for vehicle travelling in the wrong direction. A transmission link to those vehicles enables the safety system to take over from the driver. This operates acoustic/optic alarms, and after a time delay immobilises the vehicle. The automatic operation of the hazard flashers warns other road users of the danger. The detectors can be fitted at access points to the motorway, and in known danger spots. The progressive immobilisation of the vehicle enables the driver to steer the vehicle off the road. An additional warning system can be a transmitted warning which is picked up by other vehicles in a known radius e.g. via the car radio warning system. ADVANTAGE - Improved safety, automatic safety system.
Patent DE-4126749-A1 (DE)
Inventor: UMIKER HANS DIPL ING
IPC: B65D6/18
Filed: 1991-08-13
Abstract: A plastic container to hold objects, especially fruit and vegetables, with a base and four side walls and especially a stacking edge set back on the underside of the base for stacking containers is distinguished in that the container (1) has a peripheral strip (7) limiting the upper edge and two fixed opposite side walls (3, 4) and the two other side walls (5, 6) are hinged on the base and can be folded from a substantially upright position, in which the hinged side walls (5, 6) form load-transferring container side walls for transferring the load from the strip (7) above them to the container (1) beneath in the stack, into a position in which these side walls (5, 6) lie flat on the inside surface of the base and are arranged to lie inwards in relation to the container (1) to allow empty containers to be stacked.
Patent DE-4128579-A1 (DE)
Title: Use of thieno(3,2-f)(1,2,4) triazolo (4,3-a) (1,4) diazepine derivs. - for treatment and prevention of allergic rhinitis
Inventor: BLANK BURKHARD DR
IPC: A61K31/55
Filed: 1991-08-28
Abstract: Use of 4-(2-chlorophenyl) -9-methyl-2-(3-(4-morpholinyl) -3-propanon-1-yl)-6H -thieno(3,2-F)(1,2,4) triazolo(4,3-a)(1,4)diazepine (I) or 6-(2-chlorophenyl)-8,9-dihydro -1-methyl-8-((4-morpholinyl) carbonyl) -4H,7H-cyclopenta(4,5) thieno(3,2-F)(1,2,4) triazolo(4,3-a)(1,4)diazepin (II) for prophylactic or therapeutic treatment of allergic rhinitis is new. Nasal sprays, contg. (I) or (II), for treatment of allergic rhinitis are also claimed. USE/ADVANTAGE - (I) and (II) can be administered orally, nasally, parenterally, or in suppositories. Dosage is 10-100 mg three times daily. Use of (I) or (II) gives rise to less side effects than, e.g., use of corticoids or antihistamines.th