baber/WOPTO huggingface dataset:
Patent DE-4111574-A1 (DE)
Title: Oxidative bleaching of pulp, esp. for paper mfr. - using depot alkali besides soluble alkali and pref. hydrogen peroxide to increase whiteness
Inventor: BERTOLOTTI HANS DIPL ING
IPC: D21C9/16
Filed: 1991-04-10
Abstract: In oxidative bleaching of vegetable fibre material, esp. for paper mfr., by contact with bleaching liquor (I) contg. oxidant (II) and soluble alkalising agent (III), the novelty is that bleaching is carried out in the presence of an alkali deposit (IV). Pref. (IV) is added to (I) and is hardly soluble under the bleaching conditions. (IV) is added in an amt. of 0.1-10, pref. 0.2-1 times the amt. of (III), in (wt.)%. (IV) is MgO, (pref. 0.05-1.0, esp. 0.20-0.6%) (II) is H2O2, in an amt. of 0.2-6.5% (w.r.t. dry fibre); and (III) is NaOH or soda, pref. 0.0-5.0, esp. 1.2-2.0% NaOH. (I) may also contain other additives, pref. organic chelating agents, esp. diethylene triaminopentacetic acid and/or water glass, esp. 0.1-5.0%. Bleaching is carried out in one stage and pref. at a high consistency of 15-35% abs. dry fibre. USE/ADVANTAGES - The process is suitable for bleaching prim. and regenerated (sec.) pulp. Graphic paper with a high deg. of whiteness can be produced easily and economically by using (IV), which has a depot effect, i.e. gives controlled release of alkalinity to maintain the optimum pH.
Patent DE-4112564-A1 (DE)
Inventor: HAEUSER HERBERT
IPC: E05B9/10
Filed: 1991-04-17
Abstract: A lock cylinder with a cylinder core (8) which is rotatably mounted in the cylinder housing (2), has a key channel (9) and is secured by a snap ring at the inner end and with a closure element hub (4) which is arranged coaxially in front of the end face thereof, consisting of an annular part with a closure element nose (5) arranged radially thereto. The closure element hub (4) consists of two annular parts (29, 30) which are located one behind the other in the axial direction of the cylinder core (8) and are coupled to one another in the region of the closure element nose (5) and the securing snap ring (31) rests in the region of the joint between the annular parts (29, 30). <IMAGE>
Patent DE-4112767-A1 (DE)
Title: Profiled hollow rail for suspension railway - has points formed by bridging element between two sections and branch
Inventor: GEBALD GREGOR
IPC: E01B25/26
Filed: 1991-04-19
Abstract: Points on a profiled hollow rail of a suspension railway which runs on a pair of rollers on rails. The rails are on the lower part of the inside of the hollow rail (1). The points (21) are formed by a bridging element between the two parts of the straight rail (22,23), which correpsonds to about half the rail profile with straight switch tongues of defined length. The switch tongues can swing about half the angle of that between the branch and the straight rail. USE/ADVANTAGE - Acts as bridge for the straight direction and also for the branch.
Patent DE-4119867-A1 (DE)
Title: Heating boiler comprising upright components - has in flow zone of cold back flow water activated by hot gases, water being diverted to higher heater parts
Inventor: ABEL HELMUT
IPC: F24H1/32
Filed: 1991-06-17
Abstract: The heating boiler has an upper advance- and a lower return flow nave and with connecting water channels, which form a combustion chamber and hot gas draught channel. The hot gas in its passage out of the combustion chamber (4) into the hot gas draught channel (5) flows against the inflow zone of the cold return flow water, i.e. against the lower return flow nave (2) and the cold return flow water entering the return flow nave is diverted against the parts (10) activated by the hot gas. Sealing strips (7) between adjacent boiler components leave free flow apertures (8) from the combustion chamber to the hot gas draught channels only above the lower return flow nave and in the water chamber of the individual boiler components guide ribs (9) for guiding the cold return flow water against the hot parts. USE/ADVANTAGE - To operate a heating boiler in an absolutely sweat water-free state without costly measures being used.
Patent DE-4121813-A1 (DE)
Title: Load supporting system for vehicle engine - makes use of pendulum suspension with elastic blocks
Inventor: RATHJE VOLKER DIPL ING
IPC: B60K5/12
Filed: 1991-07-02
Abstract: The load supporting system is for a vehicle. It has longitudinal carriers (1,2) between which extends a cross member (3) with a U-shaped profile opening downwards. An elastically yielding load support (11) is fitted in the central region (10) of the cross member and has two elastic blocks (12,13) with a plate (14) arranged in between. USE/ADVANTAGE - Pendulum suspension for a vehicle engine which relieves the fastening points (4,5) between the longitudinal and cross members from torsional, tensile and compressive forces.
Patent DE-4130759-A1 (DE)
Inventor: KREILL WALTER DIPL ING
IPC: F16K31/64
Filed: 1991-09-16
Abstract: The centrifuge (1) described has at least one device (11, 12) designed to control the operation of the centrifuge, the devices being mounted to rotate with the rotating part of the centrifuge and to be operated by a mechanical actuator (13) also rotating with it. Such devices may, for instance, be drain valves, periodically opening discharge valves, sill height adjustment devices, pressure-control devices, temperature-control devices, etc. At least one part of the devices of this centrifuge to be controlled independently of the centrifugal force is designed so that the rotating actuator (13) changes its shape as a function of the temperature and has at least one temperature-specific shape.
Patent DE-4131674-A1 (DE)
Title: Packing fruit juice contg. pulp - by prefilling container with carbon di:oxide gas to prevent formation of a pulp plug in neck of container before introducing juice
Inventor: DOMKE KLAUS DR ING DR
IPC: B67C3/10
Filed: 1991-09-24
Abstract: Packing pulp-contg. fruit juices in a packaging container in which a predetermined amt. of the juice is introduced into the container to leave a free space at the top and the container is then sealed, comprises filling the container with CO2 gas before the juice is introduced. USE/ADVANTAGE - By prefilling the container e.g. a bottle, with CO2 gas before introducing the fruit juice, the pulp particles become attached to CO2 bubbles which then dissolve in the water so the pulp particles either remain suspended in the water or sink, rather than rising to the top attached to air bubbles as occurred previously. Formation of a plug of pulp in the neck of the bottle is therefore prevented, while the free space at the top of the bottle is automatically filled with a protective layer of CO2 which prevents oxidn. of the juice, and obviates the need for a separate injection of protective gas after filling.
Patent DE-4132499-A1 (DE)
Title: Actuator system, e.g. for window, seat adjustment or sunroof of motor vehicle - combines command inputs with indicators giving open, closed and intermediate states
Inventor: SEILER HARTMUT DIPL PHYS
IPC: B60N2/02
Filed: 1991-09-30
Abstract: A motor operates the mechanism with position feedback to a controller. Inputs to the controller are provided by a unit (35) that combines commands with display parameters. For a sunroof panel a symbol (37) indicates a vent opening position, while fully opened-and closed states are indicated by separate displays (39, 41). A line of LEDs (43) allows an intermediate opening position (47) to be indicated. Switches (51, 53, 55) are provided for activation of the system. ADVANTAGE - Allows driver to control and observe adjusted position.
Patent DE-4136068-A1 (DE)
Title: Radio broadcast transmission system for VHF-FM and-or AM signals - uses transmitted control signal for reception of both digital audio broadcasting signal or digital satellite radio signal
IPC: H04H20/26
Filed: 1991-11-01
Abstract: The radio broadcast transmission system has a control signal transmitted together with UHF-FM and/or AM signals decoded by a decoder within the radio receiver, to allow the control signal to be used for switching or control of the receiver. This allows reception of a digital audio broadcasting signal, or a digital satellite radio signal. Pref. a second control signal is also transmitted and decoded within the receiver, to allow switching between FM or AM radio reception. The receiver has a common antenna (1), HF/IF stage (2), operating controls and loudspeaker (16). ADVANTAGE - Simple control of radio receiver reception circuit by transmitted control signal.
Patent DE-4138066-A1 (DE)
Title: Adjusting process parameter dependent on changing operating state -  estimating value of changing parameter and simultaneously calculating max. error incurred
Inventor: SCHIERLING HUBERT DR ING
IPC: G05B13/02
Filed: 1991-11-19
Abstract: An adaptive control method is based on a microcomputer (2) connected to a processor (4) assigned to the process (6) which typically can be an electrical power generator. The microcomputer system has a status detector (8) a parameter identification unit (10), processors (12,16), a memory (14) and a regulating parameter stage (18). The system is continuously monitored to determine the controlled error and also the change in system parameters, e.g. rotor resistance. The operating condition is modified based upon a combination of both effects. Each error is used to determine a weighing factor for the correction process. ADVANTAGE - Improved real-time adaptive control.
Patent DE-4138734-A1 (DE)
Title: Machine for finishing both sides of cut wood conveyed longitudinally - has second finishing station automatically adjusting to width of wood treated on one side in first station
Inventor: FROEHLICH ADOLF DIPL ING
IPC: B27B31/00
Filed: 1991-11-19
Abstract: The cut planks are clamped over the entire length and breadth except for uneven protrusions in a first longitudinal conveyor and clamping section (1) with a first processing station (2) for finishing one longitudinal side. The planks are then passed on a predetermined length and through a second processing station (4) for finishing the longitudinal side. They are then passed on by a further predetermined length. During continuous finishing of th different width successive planks the conveying and clamping sections (1,3) are moved relative to each other before transfer of the planks. USE - Continuous finishing of different sized planks.
Patent DE-4141498-A1 (DE)
Title: Electronic modulo-X counter with two flip=flops per decade - allows at least full pulse period for all switching operations and addresses additional circuits alternately over two pulse lines to give 1-out-of-10 code
Inventor: MERKLE PAUL
IPC: H03K23/50
Filed: 1991-12-16
Abstract: In the modulo-X counter, for all switching operations, a time of at least on pulse period is allowed. Each decade has an input which is constantly at high potential. A decade comprises a main circuit with simple flip-flops (1-9), eight AND gates (11), nine further AND gates (12) and a five-input OR gate (13), and a pulse reversal circuit with one simple flip-flop (14), two AND gates (15), two further AND gates (16) and two NOT gates (17). Only the first decade has a single flip-flop in its additional circuit, all others having the two flip-flops. ADVANTAGE - The counter has an additional circuit with two flip-flops per decade and in the actual decade circuits only nine flip-flops.
Patent DE-4200496-A1 (DE)
Title: Lottery or game of change machine - has wheel with stopping cycle determined by insertion of spring arm in pseudo-random cycle
Inventor: GUMPP SIEGFRIED
IPC: A63F5/04
Filed: 1992-01-08
Abstract: A lottery or game of chance system has a large wheel or disc (1) that has a series of symbols or numbers formed in radial segments. Each segment has a projecting stud (3) that is engaged by spring arm (5) as a means of stopping the wheel after being set in motion. The spring arm is coupled to an actuator for movement between the retracted and engaged position. A manual switch (8) can be triggered to initiate a pseudo random cycle for inserting the spring to stop the unit. ADVANTAGE - Improves protection against manipulation of cycle.
Patent DE-4201687-A1 (DE)
Inventor: OBERDORFER-BOEGEL RAINER
IPC: F24H1/43
Filed: 1992-01-23
Abstract: A heat exchanger for generating hot water with oil or gas burners is described, pipe coils (18, 19) coiled in two layers being provided in a vertical arrangement and in this case the flame cone being introduced into the region of the pipe layers from one side of the heat exchanger. In order to achieve easy mounting, demounting and maintenance, it is envisaged that the pipe coils (18, 19) form an axial holding device for the burner casing (1) and the protective casing (2), there being arranged at the front on the heat exchanger an insertion connection (7) and at the rear a centring bead (36) on the burner casing (1), and the burner casing (1) furthermore being surrounded in a hood-like manner by a protective casing (2) which closes off the burner casing (1) at the rear, the protective casing (2) being extended through by a tension rod (37) and, for centring, a cover (33) being arranged on the tension rod (37), which cover reaches around the protective casing (2) and the bead (36) with an offset edge, and furthermore the burner casing (1) being closed at the front at the insertion connection (7) by a cover (3) and the protective casing (2) having a front plate (9) which reaches around the protective casing (2) at one insertion connection (10), the centring of cover (3) and front plate (9) or of burner casing (1) and protective casing (2) taking place via the water inlet (12) or outlet (15) pipe. <IMAGE>
Patent DE-4202202-A1 (DE)
Title: Multi-layer, counterflow, high temp. sun energy collector - has several superimposed glass plates acting simultaneously as absorber, heat transmission surface and protection against heat radiation losses
Inventor: COST KARLFRIED
IPC: F24J2/04
Filed: 1992-01-28
Abstract: The upper area of the collector comprises several closely spaced, superimposed glass plates (6,8,10). The hollow spaces between the plates are closed airtight above and below by the plates and on the two opposing sides of the four remaining by an edge piece. The hollow spaces (5,7,9) are connected so that the outside air can enter the uppermost space and flow through it. On the opposite, the uppermost hollow space is connected to the next deepest so that the air can enter into this lower hollow space. The air flows through this hollow space and at the end enters the next deepest hollow space. USE - A simple, robust solar energy collector for air heating.
Patent DE-4203502-A1 (DE)
Inventor: WILD ERNST DIPL ING
IPC: F02D41/14
Filed: 1992-02-07
Abstract: A process for assessing the efficiency of a lambda control system which emits settings FR which are to vary about a reference setting FR-SOLL, said system being supported by an adaptation device which emits adaptation values, is characterised in that a continuous calculation is made of the current value EW of a decisive value which indicates the average quantitative difference between the settings and the reference setting, the current value is compared with a decisive value threshold SW-EW, and an error signal is emitted if the current value exceeds the decisive value threshold. This process has the advantage that it can also detect errors occurring only in parts of the entire range over which an internal combustion engine can be run in which the fuel supply is set by the lambda control. If such a faulty range is entered, the setting emitted by the lambda control differs from the reference setting and as a result at least one adaptation value changes. If the faulty range is left again, the altered adaptation value no longer matches the error-free range and therefore the setting emitted by the lambda control varies from the reference setting in the other direction. As these differences are quantitatively averaged in calculating the decisive value, they affect the decisive value more strongly than the at least one adaptation value, which is immediately reduced as soon as the sign of the difference in the setting changes. It is thus possible with the aid of the decisive value to detect errors which cannot be detected using an adaptation value.
Patent DE-4204604-A1 (DE)
Title: Printing machine with axially oscillating ink transfer rollers - has worm and wheel drive with gear wheel which engages driving gear when required
Inventor: SEYFFERT ULRICH
IPC: B41F31/15
Filed: 1992-02-15
Abstract: A worm wheel (10) is mounted on a shaft (27) which has a crankpin (28,29) projecting from each end. These crankpins engage blocks (32,33) fitted between collars attached to the shafts (12,13) so that as the worm wheel (10) rotates an axial oscillation is imparted to each shaft (12,13) and consequently to the ink transfer rollers mounted on the shafts. The worm wheel meshes with a worm mounted on a shaft (10) which is driven by a gear wheel (11). The worm shaft (10) can be moved axially to bring the gear wheel (11) into or out of engagement with the driving wheel (19). USE/ADVANTAGE - The axial movements of the ink transfer roller spread the ink evenly over the printing forme cylinder. The axial movement can be generated when required by engaging the gear wheel (11).
Patent DE-4221860-A1 (DE)
Title: Motor vehicle with radio communication system - has glass windows either covered or laminated with layers of conductive material to provide EM shielding
Inventor: DINGFELDER HEINZ
IPC: H01Q1/12
Filed: 1992-07-03
Abstract: A road vehicle system has an aerial mounted externally on the bodywork for the transmission and reception of radio telephone signals. The electromagnetic emissions are of 10 to 100 W power level and are of megaHertz frequencies. Protection of vehicle occupants against these emissions is provided by provision of shielding in the regions of the body where windows are located. One version is provided by a surface coating (20) with an electrically conductive material. This can be in the form of a metal foil or metal particles of copper, aluminium or other material. Other options are to laminate in a conductive layer or to fit a Venetian blind type system. ADVANTAGE - Shields against radio waves.
Patent DE-4225185-A1 (DE)
Title: Recycling waste vegetable material, esp. rice hulls etc. - by heating under pressure with sodium sulphite, hydrolysing with sulphuric acid and converting the slurry obtd. into expanded foam prods.
Inventor: CAPPS CHARLES L
IPC: D21H11/12
Filed: 1992-07-27
Abstract: Prepn. of a slurry (I) contg. a relatively high concn. of polysaccharides and glucose in the form of cellulose comprises (a) heating silica-ruch vegetable material (II) under pressure in the presence of Na2SO3 to give a slurry with pH 6-8, (b) removing the liq. from the pulp and (c) heating the pulp under pressure in the presence of Na2SO3 and H2SO4. Also claimed are the prod. (I) obtd. by the above process, and a compsn. contg. an aq. soln. of a silicate-crosslinked cellulose polymer of formula C7H12O7(OCH3.2NaHSiO3) (III); a process for solubilising (II) in order to produce slurry (I), comprising stages (a) and (c) above; and a process for the prodn. of an expanded, porous, low-wt. prod. (IV), by producing slurry (I) contg. crosslinked polymer (III) as above, blowing gas through the slurry to give an expanded foam and then drying the foam to give a rigid, self-supporting prod. (V). USE/ADVANTAGE - The process enables waste vegetable material to be converted into light-wt., expanded, cellulose-based prods. which are useful as packaging, insulation or filtration materials and for the prodn. of coating films, non-woven fabric etc. Rice hulls are esp. suitable for recycling by this process since they have a low ligning content which does not require pretreatment to remove lignin. The claims include a process for converting (II) into useful prods., by decompsn. into its basic cellular components (stage a) and hydrolysing the slurry obtd. (stage c) to give thermomechanically modified cellulose which forms a silicate-crosslinked polymer (III). Also claimed is the prod. obtd. by this process.
Patent DE-4227648-A1 (DE)
Title: Metal vapour laser excited with HF energy - contg. 2nd tube parallel to laser tube of homogeneous metal thickness and low noise
Inventor: BASENAU KARL PETER
IPC: H01S3/03
Filed: 1992-08-21
Abstract: Metal vapour laser (I), e.g. HeCd+, HeSe+ or HeZn+ laser, is excited with hf energy transverse to the axis of the laser tube. Second tube is arranged parallel to the laser tube. Metal is uniformly vaporised over its length and is led over several connecting channels to the laser tube. ADVANTAGE - Laser has low noise with homogeneity
Patent DE-4227767-A1 (DE)
Title: Domestic drinking water filter - has three filter stages and regeneration stage and compact plastic housing contg. filters in cartridge form
IPC: C02F1/32
Filed: 1992-08-25
Abstract: In front of the filter cartridges (3) is connected a regenerating cartridge with a regeneration medium. In the filter housing (2) and connected to the filter cartridges (3) is a sterilising appts. (5) with an ultraviolet light source. Around the ultraviolet light tube (9) are two enclosing spiral tubes (10, 11) made of transparent material, each with an inlet (10a, 11a) for the water to be sterilised and an outlet (10b, 11b) for the sterilised water. The one spiral tube (10) is inserted in the feed conduit (12) to and the other spiral tube (11) in the outlet (13) conduit from the filter cartridge (3). In the filter housing is a container (6) for cleaning medium, which is connectable via a connecting conduit (26) with a cut-off valve (25) to the sterilising appts. (5). USE/ADVANTAGE - To filter and sterilise domestic drinking water. Reduces space requirement, and can match the individual requirements of households.
Patent DE-4232113-A1 (DE)
Inventor: BRUNN ERIK DIPL ING
IPC: B66B21/06
Filed: 1992-09-25
Abstract: Proposed is a curved escalator in which the occurrence of an unacceptably wide gap between the steps or between the steps and the sidewalls is avoided by virtue of the fact that all the step sections have different arcs when viewed in the plan view but have constant arcs in each of these zones. The arcs in these zones are selected or calculated such that, in every position in these zones, the rotational speed of the inner and outer drive chains is the same. The arc corresponding to the zone which links the stair landing with the central zone is such that the overall angle covered over this zone is the same for the inner and the outer drive chain. Within this region, small angular discrepancies can occur between the drive chains, the gaps of between 1 and 6 mm thus produced being compensated for by bending of the step skirts.
Patent DE-4232475-A1 (DE)
Title: Plasma chemical dry etching of silicon nitride layers - includes using cpds. contg. fluorine, chlorine bromine and iodine as etching gases
Inventor: FRANK WOLFGANG E DIPL ING
IPC: C03C17/22
Filed: 1992-09-28
Abstract: Plasma chemical dry etching of Si3N4 layers highly selective to Si02 layers comprises using cpds. as etching gases, in which each of a F atom and one of Cr, Br and I in the molecule are bonded to a carbon structure. Pref. fluorochlorohydrocarbons of structure CxFyclz (where x, y and z = 1 or more) are used as etching gases; or fluorobromohydrocarbons of structure CxFyBrz (where x, y and z = 1 or more); or fluoroiodohydrocarbons of structure CxFyIz (where x, y and z = 1 or more). Hydrogen, oxygen and/or nitrogen atoms can be built into the structure: CxHaObNcFyClzBruIv (where x, y = 1 or more; not a = b = c = 0 and not z = u = v = 0). An inert gas (He, Ne, Ar, Kr, Xe) is used as carrier gas or N2, O2 or H2 is used. USE/ADVANTAGE - Used in semiconductor technology. Selectivity of 15:1 can be achieved without detecting problematic molecular Cl.