baber/WOPTO huggingface dataset:
Patent DE-4100287-A1 (DE)
Title: Super-twist liq. crystal display - has very short switching time and large operating temp. range, good contrast and low threshold voltage
Inventor: WAECHTLER ANDREAS DR
IPC: C09K19/42
Filed: 1991-01-08
Abstract: Supertwist LCD has 2 plane parallel substrate plates forming the cell with a rim, which is filled with a nematic liquid crystal mixt. (I) with positive dielectric anisotropy and chiral dopant(s) and electrode layers and overlying orientation layers on the inside of the plates. The angle of pitch between the longitudinal axis of the mols. w.r.t. the plate surface is ca. 1-30 deg. and the twist angle w.r.t. the orientation layer is 160-360 deg. 1. (I) contains cpd(s) (AI)-(AVI) of the given formula; and 2. the mixt. has a nematic phase range of at least 60 deg.C viscosity of max. 30 mPa.s and ratio of dielectric anisotropy to dielectric constant perpendicular to the short axis of the liquid crystal mols less than 2.0. R1 and R2 independently = R = 1-12 C alkyl, in which one or 2 non-adjacent -CH2- gps. may be replaced by -O-, -CH=CH-, -CH-, -O-CO- or -CO-O. The cpds. used are known cpds. or can be prepd. by methods analogous to those for known cpds. (No details are given in the text). The prod. of the double refraction, delta n, and the film thickness is 0.1-2.5 microns; and the perpendicular dielectric constant is at least 4, pref. at least 5, whilst the dielectric anisotropy is at least 5. USE/ADVANTAGE - The displays combine very steep gradient with a large operating temp. range short switching times and low threshold voltages.
Patent DE-4101926-A1 (DE)
Title: Device for thawing deep-frozen living cells in test-tubes - test-tubes are placed in flow of warm water in standing pipe above water tank so that water returns to tank as soon as pump is stopped
Inventor: SIMMET LUDWIG DR MED
IPC: A61D19/02
Filed: 1991-01-23
Abstract: A device for thawing deep-frozen living cells in test-tube-like containers using a flow of warm water consists of a standing pipe (3) into which the test-tubes (19) are placed, a temp. controlled water tank and a time-controlled pump (2) for pumping the water through the standing pipe. This invention proposes that the standing pipe (3) should be at a higher elevation than the tank. The pipe is connected at its lower end to the delivery side of the pump and is provided with an overflow at its upper end. The pipe (3,4) is wholly or partly removable, and has a filter (7) at its lower end. An element (20) is provided for removing items from the pipe, and consists of lower filter plate connected to a rod which extends upwards out of the pipe (3). The pump (2) has a reversible drive, and a drain point with a controllable valve is provided between the pump and the lower end of the standing pipe. USE/ADVANTAGE - Used for thawing deep-frozen cells, and especially animal sperm. The test-tubes containing the cells are completely removed from the warm water flow after the required thawing time, and test-tube-like containers of different dimensions can be handled without loss of precision of the operation.
Patent DE-4102531-A1 (DE)
Title: Sintered silicon nitride body - contg. yttrium, magnesium and chromium components
Inventor: KITO TOMOHISA
IPC: C04B35/593
Filed: 1991-01-29
Abstract: A novel sintered silicon nitride body consists of 2-10 wt.% Y component (calculated as Y2O3), 0.5-10 wt.% Mg component (calculated as MgO), 0.1-5 wt.% Cr component (calculated as Cr2O3) and balance Si3N4, the total amount of Y, Mg and Cr components being 3-15 wt.%. Prodn. of a sintered silicon nitride body comprises (a) producing a moulding from a starting material mixt. of compsn. as in (A); (b) subjecting the moulding to either (i), pre-sintering at 0.1-2 MPa N2 pressure and max. 1600 deg. C to obtain at least 90% density or (ii) enclosure with a gastight material; and (c) hot isostatic pressing at max. 1600 deg. C in N2 and/or inert gas at least 30 MPa pressure. USE/ADVANTAGE - The sintered nitride body is useful as an automobile engine component or as a bearing element. It has high density at least 99% high strength (at least 1275 MPa at ambient temp.) and high fracture toughness (at least 7.5 MN/cu.m).
Patent DE-4105734-A1 (DE)
Title: Rapid microwave heating of catalyst - esp. three=way catalyst for IC engine exhaust gas cleaning
Inventor: PUESCHEL ECKARD
IPC: H05B6/80
Filed: 1991-02-23
Abstract: In the rapid heating of an exhaust gas cleaning catalyst (esp. a three-way catalyst of an i.c. engine) to an initiation temp. using a microwave source, the novelty is that a fluid medium (esp. the water vapour content of the exhaust gas) in electrical dipole form is heated in a microwave field and fed with the exhaust gas stream to the catalyst. ADVANTAGE - The catalyst is rapidly heated to the initiation temp. after starting the engine, without damage to the wash-coat of the catalyst7
Patent DE-4105947-A1 (DE)
Title: Retractable writing element for e.g. ball point pen - has spring fingers to hold writing element in extended position
Inventor: JESTER HERBERT
IPC: B43K24/08
Filed: 1991-02-26
Abstract: The writing instrument such as a ball pen or a felt tip pen has a barrel (2) which houses the writing element (4). The writing element is held in its retracted position by a compression spring (6) which acts on a shoulder (8). The writing element is extended by depressing the button (25) which is attached to the upper end of the writing element. Spring fingers (31) extend from the lower end of the press button (25). When the button is depressed these fingers are forced through a hole (16) and then spring outwards to engage the underside (15) of an internal shoulder and so hold the writing element in its extended position. USE/ADVANTAGE - Writing instrument with a positive device to hold writing element in its extended position.
Patent DE-4106726-A1 (DE)
Title: Data communication network for motor vehicle - comprises hybrid network with electrical lines between control devices and optical fibres between latter and peripherals
Inventor: BOEHM KONRAD DR
IPC: H04L12/413
Filed: 1991-03-02
Abstract: The communication network allows data to be transformed between a number of control devices and associated peripherals. It comprises a hybrid network having an electrical line network which couples the control devices together and a number of optical fibre networks each coupling a number of peripherals with the corresponding control device. Each peripheral and control device has opto-electronic transducers for the data signals fed along the optical fibres. Pref. each optical fibre network comprises a star network with a semi-duplex operating mode. ADVANTAGE - Can be reliably installed in region subject to strong interference effects.
Patent DE-4107150-A1 (DE)
Title: Floor covering film - has clear top layer of unfilled polyolefin, base layer of filled polyolefin and adhesive layer(s) between the two and/or under the base
Inventor: SCHNEIDER MANFRED
IPC: D06N7/02
Filed: 1991-03-06
Abstract: A floor covering film (I) based on polyolefin(s) or polyolefin-contg. layer(s) or film(s) is claimed; (I) is 160-1000 microns thick, with at least 3 layers of films comprising (A) an upper transparent layer 100-800 microns thick based on polyolefin with little or no filler, and (B) lower layer(s) based on polyolefin and 10-150 pts. wt. inorganic filler(s) and/or pigment(s) (per 100 pts. wt. polymer) and (C) a layer of adhesive (C1), adhesive film (C2), coupling agent (C3) and/or reactant (C4) between (A) and (B) and/or beneath (B). Also claimed is a process for the prodn. of (I), by laminating and/or stamping at 100-160 deg.C. or by co-extrusion coating at 130-230 deg.C. USE/ADVANTAGE - (I) is useful for the prodn. of flooring elements such as blocks, boards, parquet etc. made of wood, chipboard etc., with (I) fixed to the upper surface with an adhesive, either directly or via an intermediate layer; this adhesive is based on formaldehyde resin, UF, MF or PF resin and/or other thermosetting adhesives, or on a dispersion adhesive.
Patent DE-4107333-A1 (DE)
Title: Computerised order batching of assorted goods - involves two=step transfer of goods from shelves to intermediate and final containers by travelling collector
Inventor: MOSBACHER ANTON
IPC: B65G1/137
Filed: 1991-03-07
Abstract: The goods collector (4) is suspended from a frame running along rails fixed to the head of the shelving (1), and transfers goods from various storage bins (3,9) extending over one or two stages (2) to a conveyor belt (7) under a table (6) with tipping containers (5). The containers are arranged in two rows parallel to the shelves, and rocked by electric motors. Items requisitioned by a particular order are gathered from them into another container which is assigned by the computer to that order. USE/ADVANTAGE - For warehouse order batching, with reduced waiting times, and improved efficiency.
Patent DE-4112001-A1 (DE)
Title: Liq. crystalline medium with high resistance and low threshold voltage
Inventor: RIEGER BERNHARD DR
IPC: C09K19/30
Filed: 1991-04-12
Abstract: Medium based on a mixt. of polar cpds. with positive dielectric anisotropy contains 1-(4-chloro-3-fluoro or 3,4-difluoro-phenyl)-4-(4-alkyl -trans-cyclohexyl)-trans-cyclohexane cpd(s). of formula (I). In (I), Hal = F or Cl; R = 1-7C alkyl, oxaalkyl, fluoroalkyl or alkenyl. (I) are either known cpds. or can be prepd. by methods analogous to those for known cpds.
Patent DE-4117582-A1 (DE)
Title: Divided flywheel structure
Inventor: FRIEDMANN OSWALD
IPC: F16F15/134
Filed: 1991-05-29
Abstract: A divided flywheel comprises a first flywheel mass (2) fixable on an internal combustion engine and a second flywheel mass which can be engaged with or disengaged from a gearbox by a clutch.  The flywheel masses are journalled relative to each other by way of a bearing (4). The masses have a damping device between them, housed in a torus (9) which lies around the outer periphery of the flywheel.  The second flywheel mass lies partly within the envelope defined by the torus (9) and the torus itself lies outside the friction damdiameter of the clutch.  The damping device comprises helical compression springs (9) within the grease-filled torus (9).  A wall (17) of the torus is adjoined by a membrane seal (18).
Patent DE-4119958-A1 (DE)
Title: Folding screen for cooker - is made of environmentally friendly material covered in fat-absorbing felt
Inventor: REX HORST
IPC: F24C15/12
Filed: 1991-06-18
Abstract: The folding screen is made of environment friendly material. It comprises a back (1), sides (2,3) an upper folding back (4) and upper folding sides (5,6). The inner surface is covered with an interchangeable felt with a high absorption for fat. The screen is transparent and heat stable. The upper parts (4,56) of the walls may fold down over the lower portions (1,2,3). The lower portions may fold together to form a square or rectangular assembly. USE/ADVANTAGE - Protection of cooler walls, improved vapour exhaust and easy handling.
Patent DE-4128144-A1 (DE)
Title: Equipment separating items in overlapping stream - uses vibrating blades movable clear of stream in machine frame
Inventor: PFUHL REINER
IPC: B65H45/20
Filed: 1991-08-24
Abstract: The equipment separates overlapping items in a stream in their travel direction, these being in adjacent sections(25-28) emerging from a machine and being joined together by ribs(22,24). The latter can cut through by vibrating blades protruding between the streams(25-28). Each blade is so mounted in the machine frame that it can be easily extracted from the path of the respective stream. It can be mounted on a hinging holder, or alternatively on one sliding at right angles to the travel direction and lockable. USE/ADVANTAGE - Simple and safe operation of equipment for separating items in overlapping stream.
Patent DE-4135201-A1 (DE)
Title: Use of aliphatic carboxylic acids or anhydride(s)
Inventor: VOGT HEINZ DR
IPC: C08K5/09
Filed: 1991-05-15
Abstract: Use of carboxlic acids (I) of formula (I) (where R1, R2, R3 are H, OH, COOH, ot 1-6C alkyl; and x, y, z are 0-6) and/or anhydrides (IA) of at least one (I) to inhibit formation or growth of water trees in ethylene (homo- and/or co-) polymers (II) under influence of strong electric fields.     (A) Electrically insulating mixts. (III) based on (II) contg. on (III), 0.01-5% (all pts. wt.) at least one (I) and/or at least one (IA); and (B) Electrically semiconducting mixts. (IV) based on (II), contg. on (IV), (B1) 10-50% electrically conductive pigment; (B2) 0.01-5% at least one (I) and/or at least one (IA), are also claimed.     (I) is pref. acetic, propionic, butyric, isobutyric, valeric, isovaleric, pivalic, lauric, myristic, palmitic, stearic, malonic succinic, glutaric, adipic, pimelic, suberic, azelaic, sebacic, malic, tartaric, racemic, tartronic, mesoxalic or citric acid and (IA) is anhydride of one of these acids and/or mixed anhydride of at least two of these acids, and is esp. citric acid and/or its anhydride.
Patent DE-4140169-A1 (DE)
Title: Prepn. instrument for tooth root channels - has cutting helix on cutting body with spaced cutters formed as equilateral triangle
IPC: A61C5/02
Filed: 1991-12-05
Abstract: The cutter (5) has the cross-sectional shape of an equilateral triangle with the cover of the instrument core (7) as base (11). The acute angle ( psi ) of the cutter amounts to 60 to 90 deg.  and the cutter height (h) is 0.75 to 1.25 times the dia. (d) of the instrument core. The cutters for formation of removed material spaces (14) are spaced apart. The pitch of the cutting helix, both on cylindrical and conical instrument cores has the same extent over the complete length of the cutter body. The number of cutters on a cutter body length of 16 mm and in adjustment to the instrument size varies between 20 and 45. USE - A prepn. instrument for tooth root channels.
Patent DE-4141625-A1 (DE)
Inventor: UNGERER HEINZ-JUERGEN
IPC: C03B5/237
Filed: 1991-12-17
Abstract: 2.1. In the case of the prior processes and apparatus for the melting of silicate raw materials, the requisite outlay for effectively reducing the emission values with respect to dust, fluorides and chlorides in the tank exhaust gases, and for recycling the additives back to the molten bath is relatively high. 2.2. According to the invention, provision is made for preheating the raw material mixture, cleaning the tank exhaust gases, and recycling the impurities back into the molten bath to be performed simultaneously as one integrated process step and by the same apparatus, namely the raw material preheater (9). For this purpose, a sorbent storage silo (27) and also a metering device (28) for the proportional discharge of the sorbent into a receiving container (12) of the preheater (9) are arranged above the preheater (9). Alternatively, a liquid container (29) can be provided, as can an atomising element (31) for the proportional spraying of liquid from the liquid container (29) into the receiving container (12). 2.3. Production of rock wool from basalt. <IMAGE>
Patent DE-4200447-A1 (DE)
Title: Device mfr. for preparation of objects for manipulation - shapes workpiece in successive stages carried out in parallel planes with spacers between plates.
Inventor: GUELLMEISTER HENNING DIPL ING
IPC: B23Q3/02
Filed: 1992-01-10
Abstract: The device includes a jig which is assembled from plates in three horizontal planes (1-3) held together by pot-shaped distance pieces (4, 5) and positioned using centering pins (6) in laser-drilled fixing holes (7). The workpiece (8) is held by complementary shaped portions (10) of the upper and middle plates (1, 2). All edges (21) of shaping elements are either slightly convex or funnel-shaped in the axial direction. The necessary shapes in each plane are formed by a single tool as the jig is built-up vertically. USE/ADVANTAGE - With precision die castings in automotive, domestic and supply industries, cost of machining intermediate shapes is saved, only directly functional elements are used, without build-up of tolerances.
Patent DE-4204635-A1 (DE)
Title: Rainwater collection and seepage disposal - involves barrel-like containers sunk in ground with rainwater seeping out of joints
Inventor: WONDRA MICHAEL
IPC: E03B3/03
Filed: 1992-02-15
Abstract: A tapering barrel-shaped tank (2) is let into the ground to collect rainwater from roofs or paved areas. A second or more tanks (3, 5) are placed abutting against the open ends, such that a series of overlapping joints (4) are formed. Rainwater is fed (6) into the arrangement through one or more pipes, and as the outer level rises, water seeps out through the joints to soak away into the surrounding soil (1). USE/ADVANTAGE - For disposal of rainwater in small domestic situations.
Patent DE-4205171-A1 (DE)
Title: Transmission of digital data over time and frequency selective channel - transmitting signals by different antennae using same carrier frequency and different coding
Inventor: WITTNEBEN ARMIN
IPC: H04L1/06
Filed: 1992-02-20
Abstract: Digital data (alphak) are transmitted via a time- and frequency-selective channel using at least two transmitting antennas (1.1-1.3) and at least two modulated carriers, which have the same frequency. The carriers are Quadrature-Amplitude Modulated using the same base-band pulse for all carriers. The common digital data are coded into symbols by respective coder units, such that different carriers transmit different symbols. The coding units are pref. transversal filters which generate orthogonal symbols for each simultaneously transmitted encoded data pulse. USE/ADVANTAGE - For cellular mobile radio system. Receiver need not carry out channel assessment. Wavelength required for time- or frequency-selective channel is not increased.
Patent DE-4211236-A1 (DE)
Title: Directly driven bobbin doffer - has an independent drive to move bobbin from a holding to a rewinding position
Inventor: KIRIAKE MASAHARU
IPC: D01H9/00
Filed: 1992-04-03
Abstract: The bobbin doffing system, at automatic bobbin winders, has a drive to shift a bobbin plate (5) on the bobbin feed conveyor (101) into a rewinding position. This drive operates independently of the drive for the bobbin feed conveyor. The drive for the disc (115) rotates it and gives a working connection with the extraction lever (26). The disc (115) is controlled by time for movement of the bobbin plate (5) from a holding position by rotation into the rewinding position (11), while the bobbin plate (5) is held by the extraction lever (26). The drive has a ratchet wheel (53) and ratchet (57) to rotate the disc (115). The ratchet (57) is operated with the extraction lever (26) through a cam disc row to set it working. The drive has a rotating bearing housing (52) fitted to the disc (115), with the ratchet wheel (53) fixed to the bearing housing (52). The ratchet (57) is held on a vertical axis (56) on a swing plate (55) to engage with the teeth of the ratchet wheel (53). A link (59) is connected to the swing plate (55), moved to and fro by a push rod from the row of cam discs. The ratchet wheel (53) has a number of teeth, and the ratchet (57) is held against the teeth of the wheel (53) by a spring. The disc (115) is held so that it is angled from the bobbin feed conveyor towards the extraction conveyor (2) for the empty bobbin sleeves. ADVANTAGE - The mechanism gives a simple transfer from a holding to a rewinding position, and the angled disc is driven directly by the winding station with low wear.
Patent DE-4213418-A1 (DE)
Title: Endoscope instrument for surgeons - has flexible probe position determined by movement of surgeons head to vary reflected ultra-sonic signals to receivers mounted on monitor
Inventor: KAMI KUNIAKI
IPC: G02B23/24
Filed: 1992-04-23
Abstract: The endoscope (6) has an end section (18) that has a pair of motors controlled remotely (8) to adjust the deflection. A CCd camera built into the probe provides image signals that are transmitted back to a video processor (9). The image is displayed on a monitor screen. The position of the probe may be moved by the surgeon who wears a head band with a reflector for ultrasonic signals. Ultrasonic signals of different wavelengths are emitted from devices at each corner of the monitor and the reflections are received by sensors (2a-2d) to provide position control signals (4, 5, 7) to move the probe. ADVANTAGE - Allows endoscope tip to be moved by head motion of surgeon.
Patent DE-4213690-A1 (DE)
Title: Process to reduce roughness of wooden veneer surface - involves hot metal rollers passing over sheet of veneer at least twice in quick succession and then through opposed rotating rollers with different surface roughnesses
Inventor: EMMERLING HANS-JOERG
IPC: B24B39/06
Filed: 1992-04-25
Abstract: The flat wooden veneer surface is subjected to a defined pressure as a hot metal roller passes over its surface at least twice in quick succession. Sheets of dried veneer are rolled between two opposing rollers rotating at different speeds. The opposing rollers have different degrees of surface roughness. The pressure applied is at least 10<4> N/m, ideally 10<5> N/m and in the direction of wood grain and across the wood grain. Sheets are passed through the rollers in a continual process at a speed of 12 - 20 m/min.The number of pressure cycles is at least as many as the relative speed in M/min between veneer surface and the line of rolling action. The relative speed is 6 -12 m/min. USE/ADVANTAGE - For furniture. Veneers so treated only need a single coat of varnish without any sacrifice in quality. Further, glue, paint and varnish spread uniformly and do not penetrate the veneer when pressure is applied.
Patent DE-4216213-A1 (DE)
Title: Electronic digital circuit for addition and subtraction - is operated in various modes using signals from control circuits with reduced number of components
Inventor: MERKLE PAUL
IPC: G07G1/12
Filed: 1992-05-15
Abstract: An electronic digital circuit is used for the addition and subtraction of coded numbers and consists of a main circuit, together with a control circuit that generates the required control pulses. The main circuit has a 4 bit adder circuit operating with a shift register and memory stages. The control circuit provides multiple addition and subtraction modes, with the control pulses generated by a circuit (30) operating together with only 6 flip-flops. The numerical values are shown on a display. ADVANTAGE - Reduced number of components.
Patent DE-4218405-A1 (DE)
Title: Transport container for moving paper stacks on pallet - has opening in only one vertical outside wall whilst remaining vertical walls are completely closed.
Inventor: FISCHER WERNER
IPC: B65D1/22
Filed: 1992-06-04
Abstract: When the containers are placed on a pallet all the openings face inwards so that only the outside walls with no openings face outwards thereby forming a completely closed outer surface. Opposite end sides can have indented handles. The side walls can have vertical reinforcement ribs extending from inside to outside but not over the circumferential edge (25) which forms the upper restriction for the opening (18). USE/ADVANTAGE - Extra wrapping foils are avoided and only top cover and holding bands are required to secure stack.