baber/WOPTO huggingface dataset:
Patent DE-2962749-D1 (DE)
Title: Process for the preparation of calcium sulphate anhydrite and calcium sulphate anhydrite obtained by this process
Inventor: WETERINGS CORNELIS ANTONIUS MA
IPC: C04B11/02
Filed: 1979-12-12
Granted: 1982-06-24
Abstract: The invention relates to a process for the preparation of calcium sulphate anhydrite in which calcium sulphate dihydrate is recrystallized at elevated temperature using concentrated sulphuric acid. 
<??>The recrystallization is performed using sulphuric acid at an H2SO2-concentration of 40-65 wt. %, calculated relative to the quantity of liquid phase in the recrystallization mixture. A temperature of between 40 and 90 DEG C and a residence time of 5-30 minutes is applied for the preparation of calcium sulphate anhydrite with an average particle size of 0.5-3  mu , and a temperature of between 20 and 45 DEG C and a residence time of 30 minutes to 3 hours is applied for the preparation of calcium sulphate anhydrite with an average particle size of 10-20  mu . 
<??>According to the invention a very pure calcium sulphate anhydrite is obtained, which is suitable for industrial application, for example in the building or paper industry.
Patent DE-3067528-D1 (DE)
Title: Electromagnetic relay
Inventor: ONO KENJI
IPC: H01H50/28
Filed: 1980-06-30
Granted: 1984-05-24
Abstract: In an electromagnetic relay, an armature block serving to actuate contact springs includes a pair of armatures and a permanent magnet disposed therebetween to magnetize the armatures to opposite polarities. Pole ends of a yoke carrying the excitation flux created by the relay coil extend between free ends of the armatures. The armature block is suspended by means of a resilient arm integrally formed with the block at one side thereof and having its outer end fixed to a bearing portion, so that a rocking motion of the armature block is achieved by a flexing motion of the resilient arm.
Patent DE-3068753-D1 (DE)
Title: Apparatus for measuring blood pressure of laboratory animals
Inventor: DANITZ BELA
IPC: A61B5/0225
Filed: 1980-12-23
Granted: 1984-08-30
Abstract: An apparatus for measuring blood pressure of laboratory animals e.g. rats, comprising respective cages (10) for accomodating the animals that have a bottom (11) which is preheated between 33 and 35` C to intensify circulation of the animals. Respective cuffs are arranged around the tails of the animals pressurized by a common pressure actuator (23). The cuffs comprise optical pulse sensors coupled to respective measuring channels of a measuring and filter unit (30) with steep low-pass characteristics having cut-off frequencies under 10 Hz to eliminate disturbing noise effects. The operation is controlled by an evaluating unit (40). In the method for measuring the blood pressure, the pressure is established and changed simultaneously for each animal located in preheated cages, and in each channel the pressure corresponding to the occurrence of the first sensed beat pulse is stored and regarded as a blood pressure value if an undisturbed pulsation is going on with predetermined conditions after the first beat. The measurements are carried out in a sequence of measuring periods and the corresponding results are evaluated by mathematical statistical technique for each animal. If the results cannot be evaluated, new measuring sequences are started.
Patent DE-3072105-D1 (DE)
Title: Apparatus for selectively transmitting or blocking the transmission of torque
Inventor: WEST JOE EDWARD
IPC: B66D1/14
Filed: 1980-12-01
Granted: 1988-08-25
Abstract: A torque transmitting and blocking device including a cylindrical drum (114), a pair of arcuate shoes (116 and 117) positioned within the drum, and a spanner bar (120) or ring extending between the shoes to one side of the axis of the drum. On the other side of the drum axis the shoes are displaceable toward each other, and may conveniently be lightly biased apart. The shoes have surfaces (130, 131, 134 and 135) (e.g.s holes, lateral or transverse projections, or the ends of the shoes) through which rotative forces can be transmitted from sources external of the drum and through which the shoes can retransmit such forces. Application of a rotational force through such a surface into a shoe in a direction tending to displace the shoes toward each other results in rotation of the shoes and bar within the drum. Application of a rotational force into a shoe in a direction tending to displace the shoes away from each other throws the shoes into a jamming relationship with the wall of the drum Applications of the device to winches, stepping clutches, and automatic load holders are disclosed.
Patent DE-3160521-D1 (DE)
Title: Preparation of acetic acid by carbonylation
Inventor: GAUTHIER-LAFAYE JEAN
IPC: C07C51/12
Filed: 1981-05-04
Granted: 1983-08-04
Abstract: Carboxylic acids having the structural formula R1COOH, wherein R1 is a linear, branched or cyclic chain alkyl radical of from 1 to 6 carbon atoms or a phenyl-CnH2n-radical wherein 1</=n</=6, are prepared by carbonylating an alcohol having the formula R1-OH with carbon monoxide in liquid phase, in the presence of a catalytically effective amount of nickel and an alkyl or acyl halide promoter therefor, at a temperature of at least about 120 DEG  C. and under a total pressure of less than 200 bars, and said carbonylation being carried out in the presence of at least one lanthanide salt, and in an initial carboxylic acid reaction medium having the formula R2-COOH, wherein R2 is defined as was R1 above, and further wherein R1 and R2 may be the same or different.
Patent DE-3160835-D1 (DE)
Title: Shapable solutions containing cellulose and polyamide-imide, shaped articles obtained therefrom and process for making them
Inventor: CHION PIERRE
IPC: C08L1/02
Filed: 1981-03-12
Granted: 1983-10-13
Abstract: The present invention relates to new polymer solutions which make it possible to produce shaped articles, such as yarns and fibres, films, sheets and the like. These solutions consist of cellulose having a degree of polymerisation of at least 200, polyamide-imide, dimethyl sulphoxide and formaldehyde, with a weight ratio cellulose/polyamide-imide of 0.05 to 1, preferably 0.1 to 1, a ratio formaldehyde/cellulose of 0.2 to 2 and a total concentration of 6 to 25%, preferably 15 to 20%. These solutions are particularly suitable for the production of filaments which consist of fibrils substantially orientated along the axis of the fibre and closely intersecting, the cellulose macromolecules being partially involved in a crystal lattice characteristic of cellulose II. The filaments possess valuable properties for use in textiles.
Patent DE-3161844-D1 (DE)
Title: Process and apparatus for regulating the ammonia content in a liquid for washing a gas
Inventor: KARWAT HEINZ DR
IPC: C10K1/16
Filed: 1981-09-30
Granted: 1984-02-09
Abstract: Methods and apparatus for scrubbing gaseous mixtures containing ammonia are disclosed in which the gaseous mixtures are contacted with methanol in a scrubbing column to remove any acidic gases therefrom, the methanol is separated from the acidic gases and recirculated, and at least a portion of the methanol is contacted with an ion exchange material so as to remove at least a portion of the ammonia therefrom. In one embodiment of the invention, the method and apparatus also includes addition of methanol to the gaseous mixture prior to contacting in the scrubbing column so as to produce a methanol-water mixture with any water contained in the gaseous mixture and prevent the icing thereof, and includes separating the methanol-water mixture from the gaseous mixture prior to contacting with the scrubbing column as well as separating the methanol from the water and recirculating the methanol.
Patent DE-3162232-D1 (DE)
Title: Container for packed wire bundles
Inventor: VAN ES KEES
IPC: B65D85/04
Filed: 1981-04-15
Granted: 1984-03-22
Abstract: The invention relates to a container for storing a number of wire bundles, each bundle being packed into a rectangular flat box having a lower wall, four side walls and an upper wall into which a central opening can be made. The container comprises a lower wall and a number of side walls, whereby the interior space of the container is divided by a number of partition walls, which run parallel to the side walls into a central compartment and a number of further compartments equal to the number of packed wire bundles which may be stored in the said container. Each of said partition walls has an opening which, after inserting a wire filled box into its respective compartment, coincides with the central opening in the upper wall of said box, so that the wire may be pulled out of said box through said central opening and the respective partition wall opening without damaging the box.
Patent DE-3174394-D1 (DE)
Inventor: WIZEMANN KURT
IPC: F01L1/14
Filed: 1981-07-14
Granted: 1986-05-22
Abstract: 1. A valve tappet comprising a hollow stem (10, 10', 10") and a base plate (16, 16', 16") having a contact surface (30), said stem and said base plate being connected with one another along a circular ring zone (18, 18') by welding or soldering by means of an energy beam, and also comprising a shield element (22, 22', 22") arranged in the interior of said tappet, said element being located between any region of the ring zone and the region of the ring zone lying diametrally opposite thereto, characterized in that a hollow cylindrical extension (14, 14") of said base plate (16, 16', 16") is butt-jointed with said hollow stem (10, 10', 10").
Patent DE-3260983-D1 (DE)
Title: Process for protecting materials from pollution
Inventor: PIACENTI FRANCO
IPC: C04B41/48
Filed: 1982-02-23
Granted: 1984-11-22
Abstract: A process far protecting marble, stones, tiles and articles formed from such materials from the degrading action caused by atmospheric and polluting agents, by applying onto the surfaces thereof a protective agent which is a particularly defined perfluoropolyether, the perfluoropolyether being applied as such or diluted with a solvent or a mixture of solvents having a boiling temperature below 80 DEG C, preferably a chlorofluorohydrocarbon.
Patent DE-3262593-D1 (DE)
Title: Process and apparatus for purifying compositions labeled with technetium-99m
Inventor: RHODES BUCK A
IPC: B01D15/00
Filed: 1982-03-23
Granted: 1985-04-25
Abstract: Compositions labeled with technetium-99m and suitable for administration to patients are purified by means of a filtration column conveniently in the form of a syringe body (10) purged of oxygen and sealed at its opposite ends. Retained by fluid-passing plugs (14, 16) in the syringe body is a particulate substrate (12) such as cross-linked dextran which is capable of binding reduced technetium (lV oxidation state) and of retaining insoluble technetium moieties such as reduced hydrolysed technetium. The substrate (12) contains a reducing agent prepared in the absence of oxygen and comprising a mixture of colloidal stannous phthalate and an antioxidant such as gentistic acid. In use, a needle is attached to one end of the syringe body in place of one seal and the composition to be purified is drawn therethrough into and through the substrate by means of a second syringe, the needle of which is inserted through a closure seal (20) at the second end of the substrate-containing syringe body.
Patent DE-3263369-D1 (DE)
Title: Container for collecting paper towels
Inventor: SANDER BERND
IPC: B65F1/14
Filed: 1982-06-03
Granted: 1985-06-05
Abstract: 1. A collection bin (2) for paper towels (1) comprising a shaftlike container which is closed except for an upper filling opening (7) and in which a bottom (8) is arranged displaceably against the action of a force storage means and which is provided in the region of its filling opening (7) with a compacting means formed as a flap (13) which is pivotable about an axis (14) characterised in that the bin (2) is connected to a paper towel dispenser (1) having a dispensing opening (23) which is closed by a closure flap (22) and that actuation of the closure flap (22) is positively coupled to actuation of the flap (13) forming the compacting means in such a way that when the dispensing opening (23) is opened, the flap (13) is necessarily pressed on to the bin (2).
Patent DE-3264877-D1 (DE)
Title: Differential pressure indicator, especially for medical apparatuses
Inventor: KOCH HEINRICH DR ING
IPC: G01L7/02
Filed: 1982-04-21
Granted: 1985-08-29
Abstract: 1. Differential pressure indicator, especially for medical apparatus such as sucking apparatus for the drainage of wounds, comprising an at least partly transparent, elongated housing (10) supporting a balloon (14) contained in it which separates two gaseous fluids and takes a shape or position corresponding to the pressure difference of the fluids, and a connecting piece (12) provided in the housing (10) and on which the balloon is fixed with its aperture, the connecting piece having a channel (15) extending out of the housing (10), characterized in that the connecting piece (12) is disposed at the one end of the housing (10) and projects freely from said end into the inside of the housing, that at its end averted from the connecting piece (12), the housing (10) comprises a tubular piece (18) extending to the outside and being connectible to a vacuum container, and that the balloon (14) contains near the connecting piece (12) a weak or prestretched annular wall section.
Patent DE-3374799-D1 (DE)
Title: High torque drive means for two very close shafts and application thereof to a double screw extruder
Inventor: DE BERNARDI STEFANO
IPC: F16H1/22
Filed: 1983-12-27
Granted: 1988-01-14
Abstract: It is provided, according to the present invention, that two very close parallel shafts (1, 2) rotating in the same or opposite direction, each fitted with a gear (3, 4), are rotated, each of them by means of at least two drive members. In an application to a double screw extruder, the housing containing the extruding screws is directly connected with the support of the thrust bearings, without urging the drive box. Said connection is obtained by means of tie rods passing through said drive box.
Patent DE-3377583-D1 (DE)
Title: Detergent compositions
Inventor: OAKES JOHN
IPC: C11D3/39
Filed: 1983-12-09
Granted: 1988-09-08
Abstract: Built detergent bleach compositions are disclosed comprising a surface-active agent, a peroxide compound bleach (eg. sodium perborate), a manganese compound which delivers manganese (II) ions in aqueous solution (e.g. manganous sulphate or manganous chloride) and a builder mixture comprising a condensed phosphate and an alkalimetal orthophosphate in a weight ratio of from 10:1 to 1:60, preferably from 5:1 to 1:30. The composition is particularly effective for washing fabrics at low temperature, e.g. from 20-60°C, but is also usable at higher temperatures.
Patent DE-3378895-D1 (DE)
Title: Process for manufacturing light-guiding articles
Inventor: GUERRA GAETANO
IPC: C08J7/046
Filed: 1983-10-27
Granted: 1989-02-16
Abstract: A process for manufacturing light-guiding articles based on vitreous polymers, which comprises immersing the article in a bath containing a substance having an index of refraction different from that of the polymer by at least 5.10<sup>-2</sup> units, and removing the solvent by heat-treatment at 20 to 150°C.
Patent DE-3381484-D1 (DE)
Inventor: PERLEGOS GEORGE
IPC: G11C11/34
Filed: 1983-01-28
Granted: 1990-05-23
Abstract: An MOS memory cell (44) including an electrically-programmable and electrically-erasable storage device (46) fabricated on a semiconductor substrate (50) is disclosed. The storage device (46) is divided into sensing and programming sections (90,92), each of which sections comprises vertically-aligned floating gate and program gate portions (62L, 62R, 72L, 72R) respective formed from first and second electrically-conductive strips (62,72). A tunnelling region (60) is formed in the substrate (50) beneath the floating gate portion (62R) of the storage device programming section (92) and a thin tunnel dielectric (70) is interposed between the tunnelling region (60) and the programming section floating gate portion (62R) to faciliate tunnelling of charge carriers therebetween. First and second source/drain regions (94,96) physically isolated from the tunnelling region (60) are established in the substrate (50) in alignment with the sensing section floating gate and program gate portions (62L, 72L). The memory cell (44) additionally includes a selection device (48) comprised of first and second field effect transistor structures (98, 104) which can be activated during memory cell read, program and erase operations to supply selected unipolar potentials to the tunnelling region (60) and the second source/drain region (96) associated with the storage device sensing section. In particular, the first and second field effect transistor structures (98,104) may be used to simultaneously transfer ground potential from a memory cell write line (114) to the storage device tunnelling region (60) and second source/drain region (96), thereby preventing "read disturb" conditions from occurring in the thin tunnel dielectric (70) as the memory cell (44) is being read. The ability to transfer ground potential to the tunnelling region (60) and second source/drain region (96) also eliminates any need for maintaining a direct ground diffusion in the memory cell itself.
Patent DE-3469266-D1 (DE)
Title: A supporting device
Inventor: OPSVIK PETER
IPC: A47C/
Filed: 1984-04-27
Granted: 1988-03-17
Abstract: PCT No. PCT/NO84/00022 Sec. 371 Date Dec. 21, 1984 Sec. 102(e) Date Dec. 21, 1984 PCT Filed Apr. 27, 1984 PCT Pub. No. WO84/04235 PCT Pub. Date Nov. 8, 1984.A supporting device for a person, said device having a posterior supporting face (2) and thigh supporting members (5,6) designed to engage a front portion of the person's respective thighs. A leg (3) depends from the posterior supporting face (2) and is suitably, through a transition member (12), connected to a leg base (13) being provided with casters (14). An anti-tilting device (15) may be provided at the rear end of the base (13). Foot engaging projection (16) may be present to contact a floor upon downward pressure thereon. The supporting device provides a stable 3-points support for a person assuming a standing-like sitting position.
Patent DE-3472314-D1 (DE)
Title: Programme control device for a motor vehicle
Inventor: PRZYBYLA BERND ING GRAD
IPC: G06F8/654
Filed: 1984-12-24
Granted: 1988-07-28
Abstract: 1. Control apparatus for functions in a motor vehicle by means of an arithmetic module (30), having a fixed storage (40) and a variable storage (50) and having a selectively annexable further fixed storage (41) for the modification of data or programs, whereby the annexed fixed storage is detected by the arithmetic module, characterized in that the functional cycles are filed in modular fashion in the fixed storage (40, 41) and are processed on the basis of an organization program (93, 95) likewise filed in the fixed storage (40, 41) and that in the presence of the annexable fixed storage (41) the organisation program (95) of the annexable fixed storage (41) is used to process the functional cycles.
Patent DE-3474039-D1 (DE)
Title: Mixtures containing nitrilotriacetic acid and iminodiacetic acid (or salts thereof) as a sequestering agent
Inventor: YOUNG RICHARD GREGG
IPC: C11D3/33
Filed: 1984-11-09
Granted: 1988-10-20
Abstract: A sequestering agent useful in chelation of calcium and/or magnesium ions in aqs. soln. comprises 2-20% wt. iminodiacetic acid or its water-soluble salt and 98-80 wt.% of nitrilotriacetic acid or a water-soluble salt.
Patent DE-3484605-D1 (DE)
Inventor: DANBY HAL C
IPC: A61M5/14
Filed: 1984-05-04
Granted: 1991-06-27
Abstract: A disposable pinch valve assembly for parental solution delivery systems comprises atwo-piecetubing receptorhous- ing with a front section (2) and back section (4) joined by a hinge (6) and with an irreversible snap connection (20, 22, 24, 26) which prevents removal of the device from parenteral tubing after assembly. The back section (4) has a movable pressure plate (16) and the front section (2) has a stationary pressure plate (28), sothattubing betweenthe pressure plates may be pinched therebetween in response to axial displacement of the movable pressure plate (16) by a motor driven actuator.
Patent DE-3560646-D1 (DE)
Title: Device for controlling the closure sequence of double doors
Inventor: STORANDT RALF DR
IPC: E05F5/12
Filed: 1985-03-01
Granted: 1987-10-22
Abstract: An apparatus is described for regulating the closing sequence of double doors, each of which is provided with a floor-mounted door closer. In this arrangement an actuating unit is integrated into the floor-mounted door closer associated with the trailing door and controls a valve unit in the floor-mounted door closer associated with the leading door, preferably via a Bowden cable. The Bowden cable is laid in the ground so that no parts need to be installed on the door or door frame.
Patent DE-3569987-D1 (DE)
Title: Pulse generator for converting the movement of a generator into a pulse train
Inventor: RATSCHMEIER DIETER
IPC: H03M1/30
Filed: 1985-09-24
Granted: 1989-06-08
Abstract: 1. Pulse transmitter for converting the movement of a transmitter into a series of pulses dependent upon the direction of movement, having a sensor (1) which emits two series of pulses phase-shifted in respect of each other, the direction of the phase shift depending upon the direction of movement and the first series of pulses (A) being supplied to the clock input of a first JK flip-flop (2a) and inverted to the clock input of a second JK flip-flop (2b), and the second series of pulses (B) being supplied inverted to the J input of the first JK flip-flop (2a), characterized in that the second series of pulses (B), in non-inverted form, is supplied to the J input of the second JK flip-flop (2b) and in that the clock-independent reset input of the first JK flip-flop (2a) is connected with the non-inverting output of the second JK flip-flop (2b), and the clock-independent reset input of the second JK flip-flop (2b) is connected with the inverting output of the first JK flip-flop (2a), in which case the desired series of pulses for a first direction of movement is picked off at an output of the first JK flip-flop (2a).
Patent DE-3586663-D1 (DE)
Title: Solid-state relay controlling flow of alternating current
IPC: H03K17/60
Filed: 1985-01-22
Granted: 1992-10-29
Abstract: The relay comprises a current transformer having a prim. winding in circuit with an ac source and a sec. widening. A transistor circuit is connected to the sec. winding and is triggerable selectively with on and off commands so as to short circuit the sec. winding. The prim. is thus rendered conductive to ac and the sec. is open-circuited for blocking ac through the prim. The transistor circuit comprises a pair off transistors, each having its emitter/collector network connected to the base of the other transistor. The transistor circuit is galvanically isolated from the load.