baber/WOPTO huggingface dataset:
Patent DE-4031456-A1 (DE)
Title: Non-return valve two valve gatea -  has slotted expander ring with flange fitting into groove in valve housing wall
Inventor: MEYER BERNHARD
IPC: F16K15/03
Filed: 1990-10-04
Abstract: The non-return valve (10) has two valve-gates (24, 26) moving on one axle (30) and positioned, when closed, along a separating gap. The edges of the valve-gates (24, 26) form stepped or sloping sealing surfaces (36) along the separating gap. The axle (30) for the valve gates (24, 26) is mounted in a slotted expander-ring (18) which fits with its flange (20) on its outer periphery into a groove (22) in the inner wall of the valve housing (12). A stop-pin (38) is parallel to the axle (30) and goes through the valve-hole. Spacer-pieces (40) on each side the valve gates are positioned on the axle (30). USE/ADVANTAGE - The non-return valve is compact and easily produced and possesses a low flow resistance.
Patent DE-4032571-A1 (DE)
Inventor: CAPPS JUN LOUIS BENNIE
IPC: G06F11/10
Filed: 1990-10-13
Abstract: A personal computer has two memory banks (12,14) respectively connected to two parity check units (16,18) operative to detect parity errors. Upon doing so, each unit (16,18) feeds a parity error signal to a separate latch (22,24). The latches (22,24) are connected to a logic circuit (26) which is in turn connected to an interrupt controller (34) that initiates an interrupt (36) when a parity error occurs. One latch (22) is further connected to a check bit (41) of a register (40) of an I/O port (38) and the check bit (41) is set by the one latch (22). An interrupt handler reads the register and provides messages indicating which memory bank (12,14) caused the parity error.
Patent DE-4037678-A1 (DE)
IPC: B41F15/08
Filed: 1990-11-27
Abstract: In a screen printer having at least one adjustably mounted screen (4, 4') and having known squeegee and path-guiding and transporting means, furthermore having a device for reading off register marks or the like for multi-colour printing, the displaceably mounted screen (4, 4') is connected to adjusting motors (9, 9', 9") which are controlled by at least one monitoring camera (5, 5', 7, 7') which reads off the register marks or colour displacements, its pulse generator controlling the adjusting motors (9, 9', 9") via a computer or the like (8). 
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Patent DE-4038420-A1 (DE)
Title: White liquor recovery from black liquor from pulping cellulose - by oxidising unreacted sodium sulphide with gas contg. oxygen before combustion
Inventor: GUTTENBERGER HANS GEORG DR RER
IPC: D21C11/04
Filed: 1990-12-01
Abstract: In pulping cellulose with white liquor based on Na2S and NaOH, giving black liquor contg. lignin and unreacted Na2S, from which white liquor is recovered by combustion, the novelty is that a gas contg. at least 50 vol.% O2 is passed into the black liquor before combustion. The gas is technically pure O2 or air enriched in O2. It is introduced, pref. under pressure, in an amt. large enough to oxidise the Na2S to Na2S2O3 completely before combustion. ADVANTAGE - Pretreatment with O2 prevents environmental pollution by H2S and SO2 in the waste gas from combustion. In an example, in pulping eucalyptus cellulose, the amt. of black liquor (TS = 16-18%) was 192 cu.m/h, temp. 80 deg.C and Na2S concn. 8 g/l. 74 Ncu.m O2/h were introduced at 7.5 bar gauge, when the temp. rose by ca. 1 deg.C and ca. 1.0 g/l Na2S was reduced. If the total of 1.97 x 10 power4 mole Na2S was oxidised by the wet chemical method, the amt. of Na2SO4 added could be reduced by 50 t/day
Patent DE-4040342-A1 (DE)
Title: Turntable for combined microwave oven - has cycloid drive for even heating effect on any turntable point
Inventor: SCHULTE MARTIN DIPL ING
IPC: H05B6/80
Filed: 1990-12-17
Abstract: The turntable is mounted on a gearwheel which is driven by an internal or external planetary drive. Thus every part of the turntable moves in a cycloidal manner and evens out the heating effect on every part of the item to be heated. The oven is heated by microwaves and/or radiant heating. The gearwheel is of plastics or metal, and is mounted in any position under the turntable. To improve the even heating effect the microwaves can be fed into the oven by a wobbler or by a rotary antenna. The turntable is rotated in either direction. ADVANTAGE - Prevention of uneven radial energy distribution.
Patent DE-4041088-A1 (DE)
Title: Ozone removal from gas mixt. by filtering through two catalysts - first platinum@ to convert reactive gas to inert gas, then catalyst converting ozone to oxygen@
Inventor: ARLT GERHARD
IPC: B01D53/86
Filed: 1990-12-21
Abstract: Elimination of O3 from gas mixts. (I) is carried out by passing (I) first through a Pt catalyst (II), which converts chemically reactive gases (III) into chemically inert gases, and than through a second catalyst (IV), which converts O3 to O2. (IV) consists of activated charcoal and/or Mn oxide and opt. also contains metal or rare earth oxides. (III) are N oxides (which are converted to N2 and O2). Dust particles are removed by pre-filtration. (II) is heated, pref. by IR radiation. USE/ADVANTAGE - For eliminating O3 formed in corona discharges and is also useful for purifying other (I) contg. O3. The appts. consists of a 3-pt. filter system.
Patent DE-4042271-A1 (DE)
Title: Prepn. of E-oxime ether(s) of phenyl-glyoxylic acid ester(s)
Inventor: BENOIT REMY DR
IPC: C07C235/34
Filed: 1990-12-31
Abstract: Prepn. of E-oxime-ethers of phenylglyoxylic acid esters of formula (I) comprises (a) reacting a phenol Xm-Ph-PH in a base in the presence of a solvent to give a phenolate; (b) mixing with a lactone of formula (III); (c) distilling off solvent and reacting the mixt. at 50-250 deg.C in the melt; (d) washing with water and acid to give a 2-phenoxymethylbenzoic acid of formula (IV); Q = OH); (e) treating with phosgene or SOCl2 to give the 2-phenoxymethylbenzoyl chloride (IV; Q = Cl); (f) reacting with alkali(ne earth)metal cyanide opt. in the presence of prussic acid; (g) treating the 2-phenoxymethylbenzoyl cyanide (IV; Q = CN) with MeOH in the presence of acid to give (VIIb); (h) opt. splitting under acidic conditions to give (IV; Q = C(O)NHR) or (i) treating (IV; Q=R) with dimethyl sulphoxide in the presence of a base to give a beta ketosulphoxide (IV; Q = CH2SOCH3) and treating with a halogenating agent, and MeOH in acid to give (IV; Q = C(O)OMe); (k) reacting (IV; Q = C(O)OMe) and/or (VIIb) with O-methylhydroxylamine or its acid addn. salt to give (I). Q = R1CH2SOMe, OH, Cl, CN or C(O)NNR; X, Y = halo, 1-4C alkyl, 1-4C alkoxy or CF3; m = 0-4; n = 0-3; R = 1-4C alkyl.
Patent DE-4103973-A1 (DE)
Title: Compact disc recording and playback method - using decoder to identify data loss with increased speed transfer into buffer as correction
Inventor: BAAS DIETER
IPC: G11B27/36
Filed: 1991-02-09
Abstract: The output from the head (AT) is transferred to a decoder (D) coupled to both a buffer memory (Z) and a control circuit (K). In normal operation when data are read and transferred without error the buffer is continuously full. When the decoder generates a signal (E2) indicating an error, e.g. loss of data due to vibration, the data reading is repeated at double normal speed to eliminate any vacant sections in the memory and so corrects the contents. A similar process is used for writing data onto the disc. ADVANTAGE - Corrects for data loss in reading or writing process.
Patent DE-4106496-A1 (DE)
Title: Floor mat or foot wiper - has parallel lengthwise profiled bars between which are channels with base, and containing insertion pieces
Inventor: ARENS ERICH
IPC: A47L23/26
Filed: 1991-03-01
Abstract: The door-mat and/or foot-wiper has a number of profiled bars (2) with their lengthwise axes running parallel and crosswise to the direction of tread. The profiled bars (2) are held apart by attachments (3) extending the entire length of the profiled bars (2) and set below the top edges of the bars (2) to form a channel (4) enclosed on. three sides between each two adjacent profiled bars (2). The channels (4) have a closed base (5), and are the same width (7) over their entire height (6); the width (7) is at least the same as the depth (6). Flexible strips (9) made of felt, brush, rubber or textile are replaceably contained in the channels (4). USE/ADVANTAGE - The mats and/or foot-wipers collect dirt and moisture which can be cleaned by a wet/dry electric vacuum cleaner.
Patent DE-4106774-A1 (DE)
Title: Anti-skid brake control for vehicle - has pressure of brake servo switched during modulation to enable driver to monitor process
Inventor: SCHULZE BERND-GUIDO DIPL ING
IPC: B60T8/42
Filed: 1991-03-04
Abstract: The brake pressure is modulated by a simple plunger control when the anti-skid control operates. The brake servo (3) is swtiched between its maximum- and minimum settings continuously during the period of brake modulation to provide a feedback feel to the brake pedal. This enables the driver to monitor the effectiveness of the modulation process. The atmospheric side (32) of the vacuum brake servo is connected either to the vacuum line or to atmosphere to provide the two set points of the modulation. A processor control operates the anti-skid control as well as the servo settings. ADVANTAGE - Improved control, simple monitoring of anti-skid effect.
Patent DE-4114005-A1 (DE)
Title: Control circuit for DC motor speed and direction - contains three pairs of operational amplifiers for variation of multivibrator pulse width according to potentiometer position
Inventor: SCHLENKER BERTHOLD DIPL ING
IPC: H02P7/29
Filed: 1991-04-29
Abstract: Voltage pulses of either polarity are supplied to the motor (M) by displacement from the middle position of a manual potentiometer (P) across the DC supply (Us). Speed is governed by a multivibrator (MV) under the control (3) of one pair of operational amplifiers (OP1.1, OP1.2). For polarity reversal another pair (PO2.1, PO2.2) drives an output stage (PO3.1, PO3.2) via transistor switches (S1, S2). A special control circuit with diodes (D1, D2) maintains the speed control pulse width in a linear relationship to the potentiometer setting. USE/ADVANTAGE - On e.g. electric model railways with pulse-width modulation control, need for traction voltage monitor is eliminated.
Patent DE-4115585-A1 (DE)
Title: Track and operating mechanised for vertical strip blind - includes strip support component and blind operating system
Inventor: CHODZIESEN HARRY E
IPC: E06B9/36
Filed: 1991-05-13
Abstract: The vertical blind components are connected by a hook at their upper end to rotating hook. This hook is securd to an eye located a slide, which travels in a horizontal track. The eye on each slide links up with an integral cogged drive which is band driven with all other blind supports to open and close the blind face. The blind components may be slid out to cover the window, or retracted to clear the window. USE/ADVANTAGE - Simple construction of vertical blind mechanism allows product to be targetted at DIY market.
Patent DE-4116050-A1 (DE)
Title: Fold-up piece of furniture - has main base plate with two side plates, and legs or wheels with guides for back
Inventor: SUAREZ GARRIDO FRANCISCO
IPC: A47B81/06
Filed: 1991-05-16
Abstract: The fold-up piece of furniture consists of a main plate (1) forming the base. Legs, wheels or other supports are fixed to the two side plates (2, 3) between which are appropriate compartments (4'). The plates forming the furniture sides (2, 3) are hinged (5, 6) to the edges of the main plate (1). The insides of the side walls (2, 3) have guides in which fits the plate forming the back (8) of the piece of furniture. USE/ADVANTAGE - The piece of compact furniture can be quickly assembled easily by one person alone.
Patent DE-4116645-A1 (DE)
Inventor: IMHOF RAINER DR
IPC: B03D1/24
Filed: 1991-05-22
Abstract: In a device for pneumatic flotation, the gas-treated sediment is conducted via a pipe (16) into the bottom region of the separation cell (10) to a pressure build-up nozzle (19), which as a result of its reduction in cross-section builds up a defined pressure in the gas-treated sediment, which leads to a reduction in size of the gas bubbles. The sediment under elevated pressure is then, prior to entry into the separation vessel, expanded in a pressure reduction chamber (21) which is furnished with sediment outlet nozzles (22). <IMAGE>
Patent DE-4118868-A1 (DE)
Title: Christmas tree tone generator - uses decorative tone elements with controlled on=off switch in mains stage
IPC: F21S4/10
Filed: 1991-06-07
Abstract: The tone generator (5) uses a number of relatively spaced tone elements (11) coupled to the electrical supply in a cable lead (9) with a plug (7) at its free end and an intermediate mains stage (6) incorporating a controled ON-OFF switch. When the tone generator (5) is switched on it provides a selected tone sequence, e.g. corresponding to a Christmas carol tune. Pref., each of the tone element (11) has an associated change for attaching it to a branch of the tree, the tone elements (11) pref. acting as Christmas tree decorations. ADVANTAGE - Higher attraction.
Patent DE-4118949-A1 (DE)
Title: Pump or compressor of radial or axial piston type - inclusion of noise damper having expansion chamber with tangential and constricted pressure inlet
Inventor: GEILING BERND
IPC: F04B39/00
Filed: 1991-06-08
Abstract: Pump for the delivery of a pressure medium from a sucton chamber across a working chamber to a pressure chamber. The pressure chamber is defined by a pressure pulsation damper (1) which has a first expansion chamber (3) provided with a tangential and constricted pressure medium inlet (2). A contaction chamber (4) produces a hydraulic connection between the first and a further expansion chamber (3, 3'). ADVANTAGE - System for achieving noise damping over a wide frequency spectrum and amplitude range which is easily maintained and cost effective to make.
Patent DE-4120606-A1 (DE)
Title: Electrochemical prodn. of metal-contg. electrolyte - includes using metal as working electrode in cell, avoids passivation reactions
Inventor: SCHUMACHER ROLF DIPL CHEM DR
IPC: C25B15/00
Filed: 1991-06-20
Abstract: A process for the electrochemical prodn. of metal-contg. electrolytes is claimed, in which the metal is connected in a cell as the working electrode and the coating layer region characteristic of the metal is traversed with potential cycles. Also claimed are: (i) the use of the above process to make precious metal electrolytes; (ii) the precious metal electrolytes, as made in (i), contg. Ru, Rh, Pd, Os, Ir, Pt, Au, Cr, Ti, W or Ag; (iii) the use of the process to fractionally separate ore concentrates; and (iv) an appts. for carrying out the process comprising at least one generator and power amplifier and an electrochemical cell. Catholyte and anolyte regions are separated by a diaphragm, a semi-permeable membrane or an appts., the catholyte being removed continually from the system. ADVANTAGE - Passivating reactions are avoided.
Patent DE-4120690-A1 (DE)
Title: Ferromagnetic target for magnetron electrode - has first part between north and south poles of permanent magnet and second part opposite poles
Inventor: SCHULLER KARL-HEINZ
IPC: H01J37/34
Filed: 1991-06-22
Abstract: The ferromagnetic target consists of two parts and at least one permanent magnet. The first target part (22) is fitted between the north and south pole of the permanent magnet (12, 13) while the second target part (25, 26) is located opposite to the north or south pole of the permanent magnet, overlapping the outer edge region of the first part. Pref. the permanent magnet north (13) and its spaced south pole (12) are aligned onto the second target part, with the permanent magnet set on a yoke (11). The latter may have a recess, into which protrudes a head (14) of a spacer (15). The yoke may have a pole shoe and may be movable within an electrode trough (8). USE/ADVANTAGE - For magnetron sputtering, with simple design and without need for five individual targets.
Patent DE-4122383-A1 (DE)
Title: Ferromagnetic nitrogen-contg. cobalt-iron alloy film - used in magnetic recording heads
Inventor: IWASAKI HITOSHI
IPC: G11B5/127
Filed: 1991-07-05
Abstract: Novel ferromagnetic film has a crystalline structure (partially) comprising a f.c.c. phase and consists of an alloy of formula (CoxFeyTz)aNb where T = one or more of Al, B, Si, Ga and Ge, x = 66-94 at.%, y = 5-24 at.%, z = 1-10 at.%, x+y+z = 100 at.%, a = 85-99 at.%, b = 1-15 at.%, a+b = 100 at.%. Also claimed are (i) ferromagnetic film prodn. by sputtering or spraying an alloy of formula CoxFeyTz onto a substrate in a nitrogen-contg. sputtering gas, and (ii) a magnetic head including the ferromagnetic film (A). USE/ADVANTAGE - The ferromagnetic film is used for thin film magnetic heads of longitudinal or vertical recording type and for metal-in-gap heads. It has a high Bs value of more than 1.5T (15kG), a low He value of max. 10l, a low magnetostriction value of max. 2x10 power(-6), high recording capacity and heat resistance at 500 deg.C or more.
Patent DE-4122757-A1 (DE)
Title: New substd. 2-phenyl-2-(N,N-di:methyl:imino)-ethane di:thioate derivs. - prepd. by reacting substd. acetophenone with sulphur@ and 1:1 adduct of di:methylamine and sulphur di:oxide
Inventor: MATSCHINER HERMANN PROF DR RER
IPC: C07C327/18
Filed: 1991-07-10
Abstract: Substd. derivs. of 2-phenyl-2-(N,N-dimethylimino) ethane- dithioate of formula (I) are new. R is H, phenyl, 1-5C alkyl or alkoxy, opt. branched. Prepn. of (I) comprises reacting a substd. acetophenone of formula (II) with sulphur and a 1:1 addition prod. of dimethylamine and sulphur dioxide. USE/ADVANTAGE - Method enables isolation of (I) which is useful as a reagent. In an example, 1:1 adduct of dimethylamine and SO2 (38g) was added with stirring to acetophenone (12g) and sulphur (9.6g) in dry acetonitrile (50ml). The sulphur slowly dissolved upon gentle heating whereupon the soln. turned dark red to brown. The 2-phenyl-2-(N,N-dimethylimino) ethanedithioate prod. began to crystallise after approx. 1 hr. and was recovered by filtration after a further 2 hrs. and washed with cold methanol. Addition of methanol (200ml) to the filtrate followed by cooling yielded further prod. (yield 61%, m.pt. 181 deg.C).
Patent DE-4125651-A1 (DE)
Title: Friction false twister - has disc shroud to increase safety and reduce noise and simplify yarn laying
Inventor: LORENZ HELLMUT
IPC: D02G1/08
Filed: 1991-08-02
Abstract: The yarn friction false twisting appts., using two discs where their edges lie over each other with a partial overlap, has a cladding around the circumference of each disc, coaxial to the disc mounting on the swing lever. The cladding has an edge which is flush with the edge surface of the disc. Pref. the shrouding can be moved between a working positon around the discs to a position where the disc edges are free. The cladding is a ring around the disc circumference, and a trapzoid shrouding. The frame is on a pivot mounting at the machine frame on an axis parallel to the disc axes. The friction false twisting assembly is mounted to a carrier beam parallel to the longitudinal machine axis, together with a number of other friction false twisting assemblies. The carrier beam swings on an axis parallel to the longitudinal axis of the machine, and can be secured in a selected swung position. Each disc is driven by a motor coaxial to the disc axis, at the free end of the swing lever, so that the positioning of the motor gives the placing of the disc. The swing lever is formed by a projecting flap from one side of the motor housing. ADVANTAGE - The insertion of the yarn into the assembly is easier, and the operator safety is increased together with less operating noise from the fast-rotating discs. The discs, which are sensitive to high temps., are also shrouded.
Patent DE-4130504-A1 (DE)
Inventor: KOZEL PETER DIPL ING
IPC: B60T13/74
Filed: 1991-09-13
Abstract: The drive train arranged between the frame side members (1, 1%) in motor vehicles, especially commercial vehicles, essentially with a combustion engine, a manual shift transmission (2) and an electro-magnetic eddy current brake (3) has shielding plates (5, 5%) on the frame side members, which plates serve to protect the plastic pipes (4) laid in the frame side members. In addition shielding plates (6, 6%), in height protruding above the frame side members, are provided on both sides of the eddy current brake (3) at a distance from this. The plates (6, 6%) covering the eddy current brake (3), together with the plates (5, 5%) covering the electrical lines (4) in the U-shaped frame side members (1, 1%), form an air guide duct (7) for the air flow generated by the cooling fan and the airstream. <IMAGE>
Patent DE-4131653-A1 (DE)
Title: Fabric piece goods folder - has two drives with paired sensors to keep fabric edges in line over each other for the folding slit
IPC: B65H45/22
Filed: 1991-09-23
Abstract: The appts. to double fabric piece goods, by folding over one edge against the other to be wound for tailoring or retail sale, has a sensor and drive to position the edges over each other across the folding line. A second drive (19) sets the sensor (14) along the folding slit (9), according to the monitored (14) position of at least one fabric edge in the folding slit (9) with automatic control. Pref. both drives (18,19) are simultaneously active and can be controlled by the sensor (14) simultaneously and in an overlaid action. The sensor (14) has opto-electrical sensors (16a,16b,17a,17b) to monitor the edges (3a,3b) of the fabric, or each is a wide-band sensor. The paired sensors or the wide-band sensor (17) controls the drive (19) for the other fabric edge (3a). The drives (18,19) act at right angles to each other on the plane of the setting movement of the folding slit (9). Two adjustable folding rods (7,8) together with a static pivot point, define the folding slit (9) and act as a guide for the sensor system (14). Both drives (18,19) have double-action pneumatic or hydraulic setting cylinders (18a,19a). The setting cylinder (18a) of the first drive (18) has a static support at one end, for the other end to push the ends of the folding rods (7,8) through a slide (12) on a lateral carrier (13). ADVANTAGE - The appts. is easily and simply adjusted in a trouble-free operation despite width variations in the fabric.
Patent DE-4132018-A1 (DE)
Title: Oil trace detector for integration into waste water circuit, esp. industrial hydraulic system - has indicator onto which light falls and receiver which evaluates degree of reflection
Inventor: STORM HUBERT
IPC: G01N33/18
Filed: 1991-09-26
Abstract: The indicator can be exchanged for conventional indicators to enable selection of other media. A vol. filled with other media can be monitored for the penetration of foreign media. The detector comprises a threaded piece for mounting on a bushing. A transmitting diode and a receiving diode are mounted on the front end portion. An O-ring seals the diodes against a lens which is in contact with the volume to be monitored. USE - For detection of foreign media in range 50-150 ppm esp. in industrial hydraulic machine system with water cooling.
Patent DE-4133313-A1 (DE)
Title: Digital electronic circuit for addition and subtraction - has input registers with adder and subtractor stages controlled by signals from common control circuit
Inventor: MERKLE PAUL
IPC: G06F7/491
Filed: 1991-10-08
Abstract: The circuit has a pair of input registers coupled to an adder module and a pair of subtractors. The outputs of the adder/subtractors are fed through gates to the inputs of a single results register, that has an associated register handling the decimal point position. The signals required for operation of the various units are generated by a controller (10) and this has a register based stage (18) coupled to a pair of counter based stages (17,19).