baber/WOPTO huggingface dataset:
Patent DE-3067185-D1 (DE)
Title: Active low frequency bandpass filter
Inventor: BITAR OMAR DIPL ING
IPC: H03H11/12
Filed: 1980-11-11
Granted: 1984-04-26
Abstract: 1. An active low frequency bandpass filter comprising a series combination of a first operational amplifier (13) which is connected as an inverting amplifier and a second (16) and third operational amplifier (22) which are connected as integrators, the mean frequency of the bandpass filter being determined by two capacitors (C1, C2) and four resistors (R1, R2, R3, R4), the first resistor (R1) being located between the output (14) of the first operational amplifier (13) and an input (15) of the second operational amplifier (16), the second resistor (R2) being located between the output (18) of the second operational amplifier (16) and an input (21) of the third operational amplifier (22), the third resistor (R3) being located between the output (23) of the third operational amplifier (22) and an input (17) of the first operational amplifier (13), and the fourth resistor (R4) being located between the output (14) and the input (17) of the first operational amplifier (13), and the mean frequency of the bandpass filter being adjustable by varying the resistance value of the third resistor (R3) or of the fourth resistor (R4) within a frequency range whose lower and upper limiting frequencies differ by approximately the factor 3, with a specific dimensioning of the frequency-determining components without a perceptible change in the quality and the output voltage of the bandpass filter, characterised in that there is connected in series with the bandpass filter a limiting preamplifier (60 to 64) to the input of which is selectively fed an LF frequency or the output voltage (UA ) of the bandpass filter.
Patent DE-3070134-D1 (DE)
Title: Process for the consolidation of fibrous material with dispersions of synthetic resin
Inventor: FINK HERBERT DR
IPC: D04H1/587
Filed: 1980-12-18
Granted: 1985-03-21
Abstract: 1. Process for strengthening fibrous structures by treating them with aqueous plastics dispersions which are free from formaldehyde-releasing substances and the plastics content of which is made up predominantly of alkyl esters of acrylic or methacrylic acid and small quantities of alpha,beta-unsaturated carboxylic acids, and subsequent drying, characterised in that the process is carried out with a plastics dispersion which is prepared by taking an aqueous phase containing 1 to 4% by weight, based on the total weight of polymerisable compounds involved in the composition of the dispersion, of acrylic and/or methacrylic acid dissolved in the form of the alkali metal salts or ammonium salts thereof, and gradually adding the other monomers, either as they are or in the form of an aqueous emulsion, under polymerisation conditions to the aqueous phase in which the polymerisation takes place.
Patent DE-3164222-D1 (DE)
Title: Refractometer using the limit angle method
Inventor: GRANDJACQUES BENOIT
IPC: G01N21/43
Filed: 1981-10-30
Granted: 1984-07-19
Abstract: Refractometer for measuring the refractive index of a medium (2), using the limiting angle method. A source (4) illuminates a source slit (5) which has as its image with respect to an optical system (S) one of the parallel and regularly spaced slits (5') of a grille (6) fixed perpendicular to the optical axis each of the slits (5') corresponding to an angle of incidence of the optical beam on a prism (3). Turning of a rhombohedron causes the image (5') of the source slit (5) on the grille (6) to be successively on each of the slits (5') of the grille (6). The pupil (L1), located in the plane of the source, is conjugate with the exit face (8) of the prism (3) and remains stationary when the image (5') of the source slit (5) is moved over the grille (6).
Patent DE-3171659-D1 (DE)
Title: Polarization ratiometry object detection system and method
Inventor: CHARLOT JR LINCOLN H
IPC: G01S13/52
Filed: 1981-03-31
Granted: 1985-09-12
Abstract: A method and system for detecting object having preferential polarization plane reflection characteristics. The method includes the steps of: (a) transmitting from a first given location, a first plane-polarized electromagnetic wave that is oriented in a predetermined reference plane; (b) transmitting from the first given location a second electromagnetic wave having the same frequency and intensity as the first wave and not being oriented in the predetermined reference plane: (c) receiving at a second given location, reflections of the first transmitted wave to provide a first received signal; (d) receiving at the second given location, reflections of the second transmitted wave to provide a second received signal; and (e) comparing the first received signal to the second received signal for detecting an object that proferentially reflects the transmitted radiation in a distinct plane. Movement of the detected object is detected by detecting a change in the results of such comparison.
Patent DE-3174255-D1 (DE)
Title: Replaceable rupture disc cartridge arrangement
Inventor: PAUL HERMAN
IPC: F16K17/16
Filed: 1981-10-22
Granted: 1986-05-07
Abstract: A self-sealing and self-positioning replaceable rupture disc cartridge arrangement includes a cartridge receptacle mounted in a pressure relief vent having spaced apart opposite end walls with circumferential positioning grooves on respective internal surfaces thereof and a cartridge assembly having a rupture disc mounted therein for removable placement within the cartridge receptacle. The cartridge assembly includes an annular cartridge body having a cylindrical passage therethrough with a shoulder at one end thereof to retain disc seat rings, having the rupture disc placed therebetween, within the cartridge body. The cartridge includes seal mounting rings which have circumferential seals thereon, which are resiliently retractable into circumferential channels at opposite ends of the cartridge body, and which cooperate with the positioning grooves on the cartridge receptacle walls whereby upon placement of the cartridge within the receptacle, the seal rings snap into the positioning grooves. At least one of the seal rings acts as a piston such that when the pressure vessel is pressurized, a surface of the seal ring is exposed to gas pressure to forcefully urge the seal ring against an internal surface of the associated end wall of the receptacle to positively seal therebetween.
Patent DE-3262095-D1 (DE)
Title: Carrier and station for tube mail
Inventor: WUTHRICH WERNER
IPC: B65G51/26
Filed: 1982-03-17
Granted: 1985-03-14
Abstract: The pneumatic tube carrier comprises a belt conveyor with two conveyor belts (4, 5), the working faces (6, 7) of which extend in close proximity to each other from one end of the carrier to the other, for pulling, for example, a bundle of paper money (23) by frictional contact between the working faces (6, 7) into the carrier, retaining the bundle in the latter, and ejecting the bundle again from the carrier. The belt conveyor is driven, in the pneumatic tube conveyor station, via a disengageable shaft coupling, of which one coupling element (13) is arranged hidden at the carrier jacket and the other is drivable by a drive mechanism provided in the pneumatic tube conveyor station. A chamber (15) serves for accommodating hard cash, for example, this chamber exhibiting a flip lid (17) forming part of the carrier jacket (1) and equipped with a locking device, which latter is released for opening the lid (17) in the pneumatic tube conveyor station.
Patent DE-3268725-D1 (DE)
Title: Dental hygiene compositions and their production
Inventor: AMBIKE SUHAS HANUMANT
IPC: A61K8/46
Filed: 1982-02-15
Granted: 1986-03-13
Abstract: Dental hygiene compositions are indicated which contain, as an antiplaque/antiseptic/deodorizing active ingredient, a highly pure alkali metal dodecyl (lauryl) sulphate substantially free from non-lauryl alkyl salts. It is considered that the anti-microbial activity of the highly pure alkali metal dodecyl sulphate is considerably greater than the corresponding impure salt, and it is this fact which makes it effective against microorganisms responsible for the formation of dental plaque in the human mouth.
Patent DE-3269215-D1 (DE)
Title: Artificial heart valve
Inventor: MURGUET ROBERT FELICIEN
IPC: A61F2/24
Filed: 1982-10-25
Granted: 1986-03-27
Abstract: A prosthetic cardiac valve comprises a collar adapted to be secured in a blood-flow passage, a pair of pivots in the collar extending generally parallel to each other and spaced apart perpendicularly to the direction of flow through the passage, and respective flaps carried on the pivots and having inner edges. The flaps are pivotal on the respective pivots between closed positions transverse to and blocking the passage with the inner edges touching and lying between the respective pivot axes and open positions extending generally parallel to the flow direction downstream from the respective pivots. One of the flaps is constructed so that when closed it diverts flow in the passage at the other flap to move same into the open position. One of the pivot axes is downstream of the other axis and the respective flap is of substantially greater surface area than the other flap.
Patent DE-3272317-D1 (DE)
Title: Spring support device for pipes
Inventor: PERRIER JEAN
IPC: F16F15/06
Filed: 1982-08-31
Granted: 1986-09-04
Abstract: A spring support device capable of large vertical displacement for supporting relatively light pipework, such as the purge pipes of a boiler in a power station. The device includes an articulated parallelogram linkage (6) comprising a first hinge (7) connected to a fixed point, a second hinge (8)connected to the load, and vertically opposite the first hinge, and two side hinges (9, 10) in the same horizontal plane. The two arms (11, 13) of the parallelogram linkage that pass through the first hinge have extensions (12, 14) projecting beyond the first hinge and bearing against a plate (3) which transmits force to a compression spring (2). The extensions (12, 14) are considerably shorter than the sides of the parallelogram linkage.
Patent DE-3272334-D1 (DE)
Title: Apparatus for spreading granular material
Inventor: SIWERSSON OLLE LENNART
IPC: E01C19/20
Filed: 1982-09-22
Granted: 1986-09-04
Abstract: An apparatus for spreading granular material, such as fertilizer, has a carriage (1) on which there is mounted a vertical conveyer (5, 6) which comprises a vertical cylindrical housing (5) and a conveyer screw (6) rotatably mounted therein. The screw (6) is rigidly connected at its lower end to an infeed cup (8) and directly connected to a driving mechanism (7) below the cup (8). The cylindrical housing (5) and the screw wing of the screw (6) extend downwardly into the cup (8), and the cylindrical housing has guide means (9) conducting the material inwardly towards the screw blade of the screw. The material is supplied from a supply container (1A) directly down into the cup (8). At its upper end, the screw (6) is non-rotatably connected to its spreader (12) to which the granaular material is conveyed via a discharge opening (20) in the cylindrical housing and a distributor disk (21). The effective throughflow area of the distributor disk, as calculated per angular unit in the circumferential direction of the cylindrical housing, varies and is smaller at the beginning and at the end of the discharge opening (20) of the cylindrical housing.
Patent DE-3277503-D1 (DE)
Title: Process for preparing 3,5-dialkyl pyridines
Inventor: GRAYSON JAMES IAN DR
IPC: C07D213/09
Filed: 1982-07-09
Granted: 1987-11-26
Abstract: Process for the production of 3,5-dialkylpyridines. An aldehyde having the formula R-CH2-CHO, wherein R is a straight-chained or branched alkyl radical having 1 to 6 carbon atoms, and/or an acetal of such aldehyde is reacted with formaldehyde and/or hexamethylene tetramine and/or a formaldehyde acetal and/or a polymer of formaldehyde in liquid or aqueous phase at a temperature of 180 DEG to 280 DEG  C. in a closed vessel in the presence of ammonia and/or ammonium ions and in the presence of anions of an inorganic and/or an organic acid, both of which at 20 DEG  C. have an acid dissociation constant of 106 to 10-12.
Patent DE-3367721-D1 (DE)
Title: Sweetening composition and process for modifying the sweetness perception of a foodstuff
Inventor: BARNETT RONALD EDWARD
IPC: A23L9/10
Filed: 1983-07-13
Granted: 1987-01-08
Abstract: Foodstuff compositions comprising a sweetener and a sweetness modifying agent, namely m-hydroxy-benzoid acid, a process for modifying the sweetness perception and reducing the sweetness content of a foodstuff and sweetening compositions are disclosed.
Patent DE-3371202-D1 (DE)
Title: Tris(piperidylaminotriazylamino) compounds, their preparation and their use as polymer stabilizers
Inventor: TODA TOSHIMASA
IPC: C07D401/14
Filed: 1983-12-14
Granted: 1987-06-04
Abstract: Bis ( piperidylaminotriazylamino) - (piperidylaminotriazylaminomethyl) -octane derivatives are novel compounds which are valuble as stabilizers for synthetic polymers.
Patent DE-3373280-D1 (DE)
Title: Vibrating bars for an enrockment station
Inventor: ANTHONI PAUL
IPC: B07B1/46
Filed: 1983-01-21
Granted: 1987-10-08
Abstract: 1. Bars for an enrockment station in the form of a box girder (1) of large-dimension sheet metal having a trapezoidal longitudinal section, and inclined with respect to the horizontal from the large side towards the small side, their cross-section being of roof-shape, characterized in that they are each provided with one and preferably with two motor-driven vibrator units (2) imparting to them a vibratory movement with vertical acceleration, and in that they are mounted on resilient elements (3) in the form of rubber blocks mounted on pillars (4) for fixing to the structure of the enrockment station and fixed to the interior of the upper portion of the box girder (1) by means of crossbars (5).
Patent DE-3374385-D1 (DE)
Title: Process and device for the removal of so2 from gases containing so2
Inventor: KOCHANEK WOLFGANG DIPL CHEM
IPC: B01D53/50
Filed: 1983-05-19
Granted: 1987-12-17
Abstract: SO2 removal from gases, with H2SO4 formation, is effected in a SO2 removal unit having at least three processing components. The total amt. of SO2 to be removed is removed in two different process steps, one consisting of oxidn. with air in the presence of copper to form copper sulphate (absorber chamber A) and the other consisting of anodic oxidn. of SO2 (anode chamber B), the cathode reaction (cathode chamber C) of the electrochemical process comprising recovery of the dissolved copper formed in the air oxidn. step.
Patent DE-3462861-D1 (DE)
Title: Hydrostatic-mechanical transmission arrangement
Inventor: MANN EGON
IPC: F16H47/02
Filed: 1984-09-05
Granted: 1987-05-07
Abstract: 1. A hydrostatic mechanical transmission system, especially for garbage collection vehicles, with the following features : - an engine (1) coupled by a transmission (4) ; - an engine-dependent P.T.O. unit driving a variable displacement pump (18), hydraulically connected to a hydromotor (22) used for creep speed operation ; - the variable displacement pump (18) which is connected to the hydromotor (22) by a closed circuit ; - an accessory hydraulic power system (30) is used for implement operation, characterised in that the variable displacement pump (18) is connectable with this hydraulic power system via a changeover valve (28) mounted before the hydromotor (22) used for creep speed drive.
Patent DE-3472653-D1 (DE)
Title: Luggage carrier for two-wheeled vehicles
Inventor: BELKA HEINRICH
IPC: B62J7/04
Filed: 1984-03-28
Granted: 1988-08-18
Abstract: The rack has a rectangular upper frame which is supported on each side by a V-shaped frame. Each V-shaped frame has two converging legs (6) which are bent at their lower ends (9) so that they fit in parallel bores of a clamp (10). The clamp has two clamping bolts (20), each of which engages a shaped nut. Each nut fits in a slot in the clamp so that it is pressed against one of the leg ends. Thus each leg is independently clamped. The clamp is attached to the bicycle frame by a bolt (12).
Patent DE-3476406-D1 (DE)
Title: Process for the preparation of propylene-ethylene block copolymers
Inventor: SCHWEIER GUENTHER DR
IPC: C08F2/38
Filed: 1984-07-05
Granted: 1989-03-02
Abstract: 1. A process for the continuous preparation of propylene-ethylene block copolymers, in which, in an agitated fixed bed comprising small polymer particles, in each case in the presence of hydrogen as a molecular weight regulator and in the absence of a liquid reaction medium, first (I) propylene is homopolymerized, from the gas phase, in a first polymerization zone, by feeding in a Ziegler-Natta catalyst comprising (1) a titanium (III) component and (2) a dialkyl-aluminum chloride component, with or without (3) a further catalyst component, and then (II) the product obtained in the first polymerization zone is fed, with or without additional catalyst components (1) and/or (2) and/or (3), into a second polymerization zone, where a mixture of propylene and ethylene is polymerized with the propylene homopolymer present in the product from the first polymerization zone, with the proviso that the overall atomic ratio of titanium from the titanium (III) component (1) to aluminum from the dialkyl-aluminum chloride component (2) is from 1:2 to 1:15, wherein a) in the first polymerization zone, the reaction is carried out under a total pressure of from 25 to 40 bar and at from 70 to 100 degrees C, with the proviso that the ratio of the partial pressure of propylene to that of hydrogen (P/H-I) is from 100:0.1 to 100:15, b) in the second polymerization zone, the reaction is carried out under a total pressure from 22 to 34 bar and at from 63 to 83 degrees C, whit the provisos that (i) the ratio of the partial pressure of propylene to that of ethylene is from 100:10 to 100:70, and (ii) the ratio of the partial pressure of propylene to that of hydrogen (P/H-II) is from 100:5 to 100:50, c) the total pressure in the first polymerization zone is kept not less than 5 bar higher that that in the second polymerization zone, d) the relationship between the ratio partial pressure of propylene partial pressure of hydrogen in the fist polymerization zone (P/H-I) and the ratio partial pressure of propylene partial pressure of hydrogen in the second polymerization zone (P/H-II) is set so that the ratio P/H-I:P/H-II is from 0.6 to 1400, and e) the weight ratio of propylene converted to polymer in the first polymerization zone to propylene/ethylene mixture converted to polymer in the second polymerization zone is from 100:40 to 100:15.
Patent DE-3481721-D1 (DE)
Inventor: FRANTL ERICH
IPC: E04B1/19
Filed: 1984-09-28
Granted: 1990-04-26
Abstract: 1. Joint connection for frameworks, especially of steel constructions with more than two rods, which are formed as round tubes (2) and are connected together in a joint by means of screw connections arranged on the tube axes, wherein the ends of the round tubes (2) converging to a joint have an external thread (10) and are fixed to a joint piece (1) by means of sleeve nuts (11) on projections of the joint piece (1) with external threads (13), characterized in that the root diameter (d1 ) of the external threads (10) provided at the ends of the round tubes (2) is at least as large as the outer diameter (D) of the round tubes (2), in that the cross-sectional surface and the bending stiffness of the round tubes (2) in the region of the external threads (10) of the same is at least as large as in the remaining part of the round tubes (2), in that the clear width of the sleeve nuts (11) is at least as large as the outer diameter (D) of the round tubes (2), so that they are slidable over or rotatable on the round tube (2), and in that the length of the thread (12) of the sleeve nut (11) is substantially equal to the sum of the lengths of the external threads (13; 10) on the projections and on the ends of the round tubes (2).
Patent DE-3485759-D1 (DE)
Inventor: KUNG HSIANG-FU
IPC: C12N15/70
Filed: 1984-12-21
Granted: 1992-07-09
Abstract: Homogeneous recombinant human interleukin-2 is prepared by extraction of IL-2 from the cell membrane components of transformed microorganisms after lysis and purification of the extract by chromatography. <IMAGE>
Patent DE-3486044-D1 (DE)
Inventor: SCHWARTZ MICHAEL
IPC: G11B/
Filed: 1984-04-19
Granted: 1993-03-04
Abstract: A microcomputer system for converting an analog input signal, such as an audio signal representative of sound into a digital form for storing in digital form in a highly condensed code and for reconstructing the analog signal from the coded digital form is disclosed. The system includes reductive analytic means where the original digital data stream is converted to a sequential series of frequency spectrograms, signal amplitude histograms and waveform code tables. Approximately 100 times less storage space than previously required for the storage of digitized audio signals of high fidelity quality is thereby obtained. Additive synthesis logic interprets the stored codes and recreates an output digital data stream for digital to analog conversion that is nearly identical to the original source material.
Patent DE-3568877-D1 (DE)
Title: Circuit for the fluctuation compensation of the transfer factor of a magnetic-field sensor
Inventor: PETR JAN
IPC: G01D3/02
Filed: 1985-07-15
Granted: 1989-04-20
Abstract: A circuit which compensates for fluctuations in the transfer characteristic of a magnetic field sensor is disclosed. More particularly, an auxiliary magnetic field is generated preferably by a coil which is connected to a voltage generator by way of a voltage/current transducer. The auxiliary magnetic field along with the magnetic field to be measured is detected by the magnetic field sensor. The portion of the sensor output signal due to the auxiliary magnetic field is correlated with the voltage produced by the voltage generator by means of a correlator circuit. If the portion of the magnetic field sensor output due to the auxiliary magnetic field is not properly correlated with the signal from the voltage generator a feedback signal is sent to the magnetic field sensor to adjust the transfer characteristic.
Patent DE-3571747-D1 (DE)
Title: Construction set for a storage container for articles
Inventor: VAN MIERLE GERARDUS FRANSISCUS
IPC: A47B43/02
Filed: 1985-01-28
Granted: 1989-08-31
Abstract: 1. Construction set for storage containers for articles, composed of a folding blank of card for the creation of an outer housing (8a, 8b), folding blanks (30) of card for the creation of intermediate trays (9a), folding blanks of card for the creation of drawers (10a), the intermediate trays (9a) being insertable, after folding, into the outer housing (8a, 8b) and the drawers (10a) being insertable, after folding, into the spaces of the outer housing (8a, 8b) defined by the intermediate trays (9a), characterized in that the folding blank (30) for the intermediate trays (9a) consists of a hollow polygon (31) adapted to the internal width (W) of the outer housing (8a) formed by folding and gluing, tabs (36 and 37) adjoining the top wall (32) and bottom wall (33) of the said polygon, with the interposition of fold lines (34 and 35), which tabs can be bent back onto the top wall (32) and the bottom wall (33) respectively and, with the interposition of fold lines (38, 39, 40), possess tongues (41, 42 and 43) whose width (b) corresponds to the height of the drawers (10a) (Figs. 1 and 2).