baber/WOPTO huggingface dataset:
Patent DE-4029454-A1 (DE)
Title: Removing EDTA and complexes from waste water - by oxidn. with persulphate at acid pH
Inventor: KUNERT IVAN
IPC: C02F1/66
Filed: 1990-09-17
Abstract: EDTA and its complexes, esp. the Ca complex, is removed from waste water by oxidn. of the EDTA with persulphate (S2O8--) at acid pH. Pref. acidification is with an acid, esp. HCl, to pH about 1. Oxidn. is at not below 60 deg.C., pref. using solid Na2S2O8, with at least 2 mols. of Na2S2O8 w.r.t. 1 mol. of EDTA. After acidification, pref. to pH 1, pptd. EDTA and complexes are sepd., followed in a 2nd stage by oxidn. of the EDTA with persulphate. USE/ADVANTAGE - Examples of waste waters contg. EDTA are those from water treatment, e.g. by reverse osmosis, and from prodn. of photochemicals. The process is simple, very efficient, and cheap. The residual content is less than 10 mg EDTA; (in the H4Y form). In an example, waste water from a reverse osmosis plant which had been flushed periodically with a soln. of an EDTA salt (Na2H2Y.2H2O), contg. complexes of EDTA with metal ions, mostly Ca, was brought to pH 1 with HCl. 80% of the EDTA pptd. and was filtered off. The filtrate contg. 20% of the EDTA, as complexes with metal ions, was treated cold with at least 2 mols. of solid Na2S2O8 w.r.t. 1 mol. of EDTA, and stirred for 90 mins., when the temp. rose to 80 deg.C.. The treated waste water contained less than 10 mg/l of EDTA (as H4Y). Residual Na2S2O8 was not harmful, but oxidised residual organic matter in the water.
Patent DE-4031092-A1 (DE)
Title: Telephone system with modems for public network connections - facilitates transmission of telephone signals between movable handset and fixed telephone point via power distribution wiring
Inventor: FABER CHRISTOPH
IPC: H04M1/71
Filed: 1990-10-02
Abstract: Speech transmitters and receivers are built into two modems, one (1) of which is linked by cable (2) to a standard telephone plug (3) compatible with any socket (4) of the public telephone network. The other modem (6) combines a similar but portable socket (8) for the telephone (9) with a standard two-pin plug (5) for insertion, like its counterpart on the first modem (1), into any socket (7) of the public power distribution network. ADVANTAGE - Mobility of system and of its users is increased at relatively low technical and financial cost for larger number of telephone subscribers.
Patent DE-4033947-A1 (DE)
Title: Packing container in flat blank form with folds - has curved base flaps for forming can-shaped container
Inventor: SEUFERT THORSTEN
IPC: B65D5/06
Filed: 1990-10-25
Abstract: The packing container (1) which has a sleeve wall (2) extending between an upper edge (3) and a lower edge (4) can be brought into the flat state by means of two diametrically opposite fold lines (5,6). Flaps (20,21,22,23) are supported by fold lines (16,17,18,19) which have in the area of the lower edge (4) a length (L1,L2) which only corresponds to a part of the maximum width (B1,B2) of the flaps attached to each fold line. The cut edges (25,26,27,28) emerging from each fold line (16-19) on each predetermined part (U1,U2) of the circumference of the flaps in the flat state of the blank (24) have on both sides of the fold line a path diverging from the lower edge (4). In the assembled state the flaps (20-23) partially overlap to form together the base (15) with a base centre point (M). ADVANTAGE - The tranpsort container can be transported flat but in the assembled state resembles as near as possible the shape of a can.
Patent DE-4036646-A1 (DE)
IPC: A01N47/30
Filed: 1990-11-16
Abstract: A process for the preparation of ureidoperoxycarboxylic acids of the formula  A[NHCONHBCOOOH]x,  in which x is the number 1 or 2, A, if x is 1, is hydrogen, C1-C20-alkyl, aryl, preferably phenyl, or haloaryl, preferably chlorophenyl, or if x is 2, is C1-C20-alkylene or arylene, preferably phenylene, B is a group of the formula <IMAGE>  <IMAGE>   in which n is a number from 1 to 20, m is the number 0, 1 or 2, R1 is C1-C20-alkyl and R2 is in each case hydrogen or C1-C20-alkyl,  which comprises dissolving carbamoyllactams of the formula  <IMAGE>    in which x, A and B have the abovementioned meanings, in a one- to six-fold, preferably a one- to three-fold, amount by weight of a strong catalyst acid, by then adding water in a one- to ten-fold molar excess, relative to the carbamoyllactam, to the solution of the carbamoyllactam in the catalyst acid and by heating the reaction mixture to form the ureidocarboxylic acid, by then adding to the reaction mixture an aqueous hydrogen peroxide solution in a one- to ten-fold, preferably a two- to four fold, molar excess per oxidizable carboxyl group of the ureidocarboxylic acid formed in the preceding reaction step, and by then precipitating the resulting ureidoperoxycarboxylic acid from the reaction mixture. These compounds are suitable as bleaches, oxidants and disinfectants.
Patent DE-4036740-A1 (DE)
Title: Continuously adjustable gear especially cone pulley gear - has control, and torque sensor with two pressure medium inlets, restricting valve and two pressure pipes
Inventor: BART JOERG DR
IPC: F16H61/662
Filed: 1990-11-17
Abstract: The gear has a control member to which are connected mechanical or hydraulic transmission pieces. A torque sensor (2) produces hydraulic pressure dependent on torque, and has a pressure-inlet exerting a pressure medium on it. The torque sensor (2) has an additional second pressure inlet (A, B). Both pressure inlets (A, B) build up pressure which is dependent on torque and separate from each other for thrust and pull. The torque sensor (2) in the two pressure-pipes (4, 5) has a pressure-restricting valve (6A, 6B) between the torque sensor (2) and the pressure medium source (8, 9). The continuously adjustable gear avoids excessively high tension, and is quickly regulated using the torque as a regulating quantity.
Patent DE-4038959-A1 (DE)
Title: System for joining covering sheet to stack - sets fold in position by transporting sheet along rotary edge
Inventor: FUCHS FERDINAND
IPC: B42C11/00
Filed: 1990-12-06
Abstract: The system joins a stack of sheets to a covering sheet, which is glued to the rear side of the stack. The covering sheet is indented where a fold line is later to be formed, folded by transporting along a stationary folding edge, glued along an edge zone, and glued to the stack rear side. After folding along the stationary edge, the fold is set in position by transporting the sheet (4) along a rotary folding edge (56). ADVANTAGE - Precise folding and faster output.
Patent DE-4041176-A1 (DE)
Title: Folding vehicle roof sealing system - moves seal sideways and inwards from window pane on opening
Inventor: BALL WILFRIED
IPC: B60J10/90
Filed: 1990-12-21
Abstract: The sealing system is for a folding vehicle-roof, having a seal on the latter bearing against the edge of a side window-pane when both are shut. On opening, a pin (8) working in a guide track (6) moves the outer part (10) of the seal (4) sideways towards the inside. Where the seal bears against the rear edge of the shut pane and this slopes inwards towards the top, the outer part concerned can be that which bears against the rear pane edge at the bottom. ADVANTAGE - Reduces stowage space required for open roof.
Patent DE-4041551-A1 (DE)
Inventor: BONN PETER
IPC: F04D29/66
Filed: 1990-12-22
Abstract: The invention concerns a method of avoiding the formation of bottom vortices at the inlets to rotary pumps or suction lines, improving the characteristic curve and the efficiency of the pump and avoiding damage to the pump or the inlet chamber. In order to achieve this aim, the inlet-chamber walls adjacent to the pump or suction-line inlet are fitted with a sheathing and/or are faired. For the sheathing, attachments are used which rest against the floor and walls of the inlet chamber and/or allow the liquid being pumped to pass through.
Patent DE-4102493-A1 (DE)
Title: Hydrodynamic mechanical transmission for vehicle - uses interaction of pump and turbine to give improved braking
Inventor: RUETZ GOTTFRIED
IPC: F16D57/04
Filed: 1991-01-29
Abstract: The hydrodynamic-mechanical transmission is for a vehicle. It has a first planetary drive (2) to divide the power input between a branch with a hydridynamic converter (3) and a purely mechanical branch coupled to the output shaft (5). In the traction mode of the converter a turbine wheel (9) rotates counter to a pump wheel (6) which in the axial direction has a displaceable blading section (6a). USE/ADVANTAGE - Transmissions with an integral torque converter which in the braking mode has higher braking moments.
Patent DE-4105697-A1 (DE)
Title: Synchronised safety vacuum switching panel with individual magnetic drives - each having control unit deriving signals from movement, drive and load parameters for comparison with reference values
Inventor: GEBAUER ECKEHARD DR
IPC: H02H9/00
Filed: 1991-02-21
Abstract: The maintenance-free synchronised switching vacuum panel has individual drivers, a magnetically actuated switching system which operates under vacuum, and a control for synchronised opening of the switches at, or shortly before, the null point of the alternating current. The control generates signals from movement, load current and phase parameters. These signals are fed to a comparator (4). They are compared with reference values and the output is fed to the amplifier (5). The amplifier (5) controls the exciting current of the driver such that the switches in each vacuum switch chamber 91) open in synchronisation within 0 to 2 ms before the respective null current. The switches are closed within 2 ms either side of a null current. ADVANTAGE - Simple inexpensive system with minimal mechanical stress, increasing and equalising the mechanic and electrical life of the switches, esp. in case of h.f. switches.
Patent DE-4111479-A1 (DE)
Title: Regeneration of ion exchangers for removing hardness of water - by treating with sodium chloride soln. then with chelating agent to remove alkaline earth metal ions
Inventor: LANGNER ALEXANDER DR
IPC: B01J49/06
Filed: 1991-04-09
Abstract: Regeneration of ion exchangers is effected by (a) treating the exchanger with a NaCl soln. to restore it to Na form, and (b) flushing the exchanger with a soln. of a chelating agent (I) to remove any alkaline earth metal ions introduced in step (a). (I) is an alkali metal salt of a carboxylic acid with chelating properties. Pref. step (b) is effected with a soln. contg. 0.2-5 (esp. 0.2-1) wt.% of an alkali metal (esp. Na) salt of nitrilotriacetic acid (NTA) or EDTA. The soln. has a pH above 5. USE/ADVANTAGE - The process may be applied to ion exchangers used for removing hardness ions from water used in heat exchangers and low-pressure steam boilers. The process uses reduced amts. of chemicals compared with processes in which the regeneration soln. is treated to remove alkaline earth metal ion
Patent DE-4112567-A1 (DE)
Title: Application of coating to carrier and process appts. - where coating is cut slightly oversize, placed on carrier with excess material held away from carrier during cutting to give longer tool life
Inventor: SASS MANFRED
IPC: B29C63/02
Filed: 1991-04-17
Abstract: A process and appts. for mfg. a component comprising a carrier part with at least part of the visible area covered with a decorative layer. In the process the decorative layer is cut slightly larger than the area to which it is to be applied and after application the excess is cut off. Both the excess material and the area close to the cutting line are held away from the carrier during the cutting off of the excess material. Appts. comprises a tool for applying the decorative layer to the carrier and a gripping device which holds the excess material away from the carrier surface. A cutter removes the excess material in an unsupported area. USE/ADVANTAGE - The process and appts. mfr. a component comprising a supporting area partially covered with a decorative layer, typically for vehicle interiors, allows more precise cutting of excess material and gives longer cutter life.
Patent DE-4115253-A1 (DE)
Title: Electronic proximity switch with e.g. cube-shaped housing
Inventor: BRASSE DIERK
IPC: H03K17/945
Filed: 1991-05-10
Abstract: The switch, which may be aligned to accommodate various sensing directions, comprises a sensor housing (1) with a sensing face (4) a head joint (2) with a connection support (11), which may be selectively fastened to the housing 1 in two different angular positions to direct the face either axially or laterally, and a base to be mounted at the point of installation, to which the head joint may be fixed in four, angular positions each 90 deg. apart.  The sensor housing contains the entire electronic circuitry and the base takes the form of mounting block (3). A plug (17) is rotationally accommodated within the connection support equipped with four radial bores (12). The block carries a fastening screw (14) which selectively may be screwed in through one of the bores until it meets the plug so that the angular position of the heat joint may be fixed at stepped positions and the plug can be fixed at any desired angular position relative to the block.
Patent DE-4116438-A1 (DE)
Title: Rear folding vehicle seat - incorporates seat cushions which re-fold to position providing integral secure chilo seat
Inventor: SINNHUBER RUPRECHT DIPL ING
IPC: B60N2/30
Filed: 1991-05-18
Abstract: The vehicle seat, particularly a rear seat (4), has a backrest (5) and a seat cushion (6). Integral to the seat is a child seat (8) formed by rearranging the seat back and cushion. The seat back and cushion fold to provide the additional carrying space, with the child seat able to be removed from the seat unit which is then vertical. USE/ADVANTAGE - Secure positioning of the child in the child seat which is made by rearranging back seat of vehicle.
Patent DE-4117527-A1 (DE)
Title: Pipe component with facing metal flanges and seal - has concave faces for better absorption of tension forces
Inventor: TUECKMANTEL HANS-JOACHIM DIPL
IPC: F16L23/16
Filed: 1991-05-29
Abstract: The concave faces (4) are formed on the processing face of the flange on the side of the seal (3) and are filled at least partially and at most up to a flat surface by the enamel support pad (5) provided on the processing face. The enamel pad (5) can also have a concave shape towards the sealing insert (3). The sealing insert can have a concex cross section conforming with the concave shape of the enamel pad. USE/ADVANTAGE - Pipe joint sealing system. When tensioning the flanges towards each other the sealing force can now no longer force the sealing inlay out of the gap between the flanges.
Patent DE-4118633-A1 (DE)
Title: Fast action, fire station door
Inventor: HOERMANN THOMAS J DIPL ING
IPC: E05F5/00
Filed: 1991-06-06
Abstract: The fast-action door, such as multi-leaf type for a fire station etc. is rapidly opened by a power accumulator, without the need for mains electricity.  It has one or more telescopic tube assemblies, whose sections are thrust one inside the other in opposition to a compression, coil spring. The door leaves can be arranged to run up against a shock damper in the opening direction.
Patent DE-4123814-A1 (DE)
Title: Water enriching assembly - has primary flow stream over sieve with upwards air flow and dwell zone to be mixed with lower sec. flow to be taken from container
Inventor: WOHLGEMUTH DIETHELM
IPC: C02F3/12
Filed: 1991-07-18
Abstract: The assembly to enrich flowing or standing water with oxygen, in surface or subterranean water with a low oxygen content, the water is passed through a container with at least one inflow and outflow and divided into a prim. and sec. flow stream. The container has a sieve structure at or above the water level and the prim. flow is directed by a feed into the container from above, on to the sieve structure. An air flow is directed through the sieve structure from below from a ventilator, where part of the prim. flow floats on the sieve. The air flow feed to the prim. flow stream is interrupted in a following dwell zone, for the prim. stream to pass onwards over a further sieve structure and dwell zone and then drop out through the prim. flow stream outlet. The sec. flow stream is generated by a pump and a feed below the water level near the prim. flow outlet, for the prim. and sec. streams to be mixed together. ADVANTAGE - The assembly can process large vols. of low-oxygen water, whether surface water or subterranean, in a simple operation requiring little energy. The air with oxygen is strongly mixed by contact with the water to transfer oxygen ot it
Patent DE-4125761-A1 (DE)
Title: Polyarylene sulphide compsn. giving high impact reduced flash mouldings - contg. nitro-aryl-keto cpd., bis- and/or poly:maleimide, and fillers or reinforcement
Inventor: KOEHLER BURKHARD DIPL CHEM DR
IPC: C08L81/02
Filed: 1991-08-03
Abstract: Compsns. giving mouldings with reduced flash comprise (A) 99.8-79 wt.% polyarylene sulphide; (B) 0.1-15 wt.% nitroarylketo cpds.; (C) 0.1-15 wt.% bis- and/or poly-maleimides; and (D) 0-300 wt.% based on wt. (A)+(B)+(C) fillers or reinforcement. (A) is e.g. polyphenylene sulphide (PPS). (B) is e.g. o-, m- or p-nitro-benzaldehyde or -acetophenone or 3,3'-dinitrobenzophenone. (C) is a maleic anhydride/diamine prod. with the amine being e.g. m- or p-phenylenediamine, 4,4'-diamino-diphenyl-ether or -sulphide or an aniline/terephthalic dialdehyde condensate, with (C) being prepd. e.g. as per GB1137592. A commercially available (C) is Mitsubishi Petrochem's MP-2000X (RTM: maleimide made using toluidine/terephthalic dialdehyde condensate as amine component). USE/ADVANTAGE - The compsns. show good flow in injection moulding etc. and give mouldings having improved mech. properties (e.g. impact strength) in addn. to reduced fla
Patent DE-4126776-A1 (DE)
Title: Video and film lamp for mounting on camera - has e.g. floodlight and spotlight arranged in housing at fixed angle to each other on rotatable mounting piece
Inventor: CONSTEN FRITZ
IPC: G03B15/03
Filed: 1991-08-13
Abstract: The lamp (10) has at least two beams units (12,14) and a mounting piece (16) for attachment to a camera. The beam units are arranged in a housing (18) such that their lines of symmetry (20,22) lie at an angle (alpha) to each other, and the housing is rotatably fixed to the mounting piece about its centre line (24). One beam unit is a spotlight (12) and the other a floodlight (14), and can be separately operated. A diffuse, artificial light, or colour filter (26), may be introduced between the two beam units. ADVANTAGE - Beam units can be changed with one hand without adjustment of beam in optical axis.
Patent DE-4129491-A1 (DE)
Title: Roof insulation material - obtd. by applying cover to at least one outer surface of bitumen layer
Inventor: MARZOUKI TAIEB
IPC: E04D5/12
Filed: 1991-09-05
Abstract: The web material for roof sealing, contg. at least one layer of a bitumen material, has a covering during mfg. wholly or partially over the bitumen layer (11) at least at one outer side (12, 13). Pref. the outer side (12, 13) of the bitumen layer (11) is covered only during one mfg. stage, esp. when the bitumen layer (11) has set such as during the cooling and hardening stage. The covering belt (24) or film is laid at least at one outer side (12) of the layer (11) and moved synchronously with it, for removal after the layer has set sufficiently. On partial covering of an outer side (12, 13), it forms a stencil to give the layer a surface structure. The outer surface (12, 13) of the layer (11) which is not covered is treated with a scattering of a granular or powder material, pref. a mineral material such as talcum. The covering belt (24) or film is used a number of times. One outer side (12, 13) and pref. the upper side (12) is partially covered and the other side (13) is fully covered. ADVANTAGE - The material can be produced economically and structured for its application.
Patent DE-4129640-A1 (DE)
Title: Mobile trailer for collecting grass cuttings or sweepings
IPC: B60P1/16
Filed: 1991-09-06
Abstract: The mobile trailer has two independent trailing wheels which rotate and swivel about separate vertical stub axles mounted on a horizontal transverse bar attached to the chassis.     The collecting receptacle is mounted on two parallel guides in which it is raised or lowered, raised for emptying at high level and lowered for collecting. The receptacle is operated by a ram located centrally with respect to the width of the trailer, one end of which is attached to the chassis frame, and the other end to the rectangular frame of the receptacle.
Patent DE-4136214-A1 (DE)
Title: Home furnishings fabrics folding appts. - has longitudinal folding and slip belts directly followed by successive lateral folding belts
IPC: D06F89/00
Filed: 1991-11-02
Abstract: To fold home furnishing fabrics, bedding etc. the material moves between at least one folding belt and a lower slip belt in one direction, and laterally between at least one folding belt, an auxiliary belt and a take-off belt. The lateral folding belts are arranged below the longitudinal folding belts, so that the material from the slip belt is laid directly on the upper cross folding belts through the slip and rolling action. The number of folding belts are deployed with the free ends overlapping so that, by changing the direction of movement, each successive belt of each folding belt imposes a fold. ADVANTAGE - The number of belts is reduced so that each belt imposes a fold without intermediate conveyor belts, which cuts down on the drives together with the cost and size of the assembly.
Patent DE-4143130-A1 (DE)
Title: Displacement path length measurement for low-cost machine tools - involves generating step pulses using toothed belt driving angle step transducer via toothed plate
Inventor: HUSCHER GEORG
IPC: B23Q17/22
Filed: 1991-12-28
Abstract: The method involves generating step pulses at a rate proportional to the displacement using a toothed belt (2) tensioned on both sides, guided over rollers and engaging without play a toothed plate (7) on the shaft of an angle step transducer (6). The pulses are fed into a counter. A toothed belt (2) with steel wire inserts is used with a minus tolerance wrt. the characteristic length and is tensioned to its characteristic degree. The tensioning strain also serves to keep the teeth in a fouling protection slot (3) outside the regions of the rollers and toothed plate. USE/ADVANTAGE - For use in machine tools in the resolution range 5 to 10 microns. The simple method involves using an easily mounted, low-cost arrangement.
Patent DE-4200260-A1 (DE)
Title: Process evolution computer for physical and technological process modelling - uses meta-cellular automats to run model processes as basis for deriving system characteristics and operator action recommendations
Inventor: VETTERKIND DIETER W DR ING
IPC: G05B17/02
Filed: 1992-01-08
Abstract: In a process evolution computer the hardware and the media employed, e.g. fluids, vapours, are modelled using meta-cellular automats in which model processes run according to set or learned rules. The processes are read automatically and abstracted using self-constructing Petri networks and multiple flow analysis. Evolution follows using parallel genetic algorithms and problem recognition and solving the model processes and selectively input process data are used to identify system and component condition, process diagnoses, process prognoses, recommendations for system operator action etc. USE - In power stations, chemical plant etc.