baber/WOPTO huggingface dataset:
Patent DE-3923044-A1 (DE)
Title: Matrix LCD contg. specified nematic liq. crystal mixt. - with positive dielectric anisotropy and high specific resistance
Inventor: WEBER GEORG
IPC: G02F1/137
Filed: 1989-07-13
Abstract: Matrix LCD consists of a cell formed by 2 plane parallel plates, integrated nonlinear elements for swtiching individual image points on these plates and a nematic liquid crystal (LC) mixt. with positive dielectric anisotropy and high specific resistance. The novel features are that: the LC mixt. is based on min. 10 (wt.)% LC component B, consisting of cpd(s), with a dielectric anisotropy of over +1.5 (b) max. 90% LC component A, consisting of cpd(s). with a dielectric anisotropy of -1.5 to +1.5, of formula (I) and (c) 0-20% LC component C, consisting of cpd(s). with a dielectric anisotropy of under -1.5; and the nematic LC mixt. has a nematic phase range of min. 60 deg.C, a viscosity of max. 30 mPa.s at 20 deg.C and an average dielectric constant, epsilon, of max. 8.  An LC compsn. contg. cpd. (I) is also claimed. In (I) R1 and R2 independently = n-alkyl, omega-fluoroalkyl or n-alkyl with up to 9C; rings A1-3 independently = 1,4-phenylene (Phe), 2- or 3-fluoro-Phe, trans-1,4-cyclohexylene (Cyc) or 1,4-cyclohexenylene; Z1 and Z2 independently = -CH2CH2- or a single bond; m = 0, 1 or 2. USE/ADVANTAGE - These LCDs have a very high specific resistance, great operating temp. range, short switching times and low threshold voltage. The compsn. is esp. useful in matrix LCDs but is also suitable for TN, STN or OMI systems.
Patent DE-3925942-A1 (DE)
Title: Gyro stabilised target seeker for guided missile
Inventor: WAGNER ERIC
IPC: F25D19/00
Filed: 1989-08-07
Abstract: The target seeker uses a rotor (32) which is free to move about its centre point (20) to all sides, with a rotary axis (34) passing through the centre point (20).  The rotor (32) supports an optical imaging system (36, 40, 28) with a field of view in a plane perpendicular to the rotary axis (34).  The obtained image is received by a detector (62) for providing target signals in turn used to provide missile guidance signals. The detector (629 is contained by a stationary cooling housing (46) relative to which the detector (62) can pivot in all directions about the centre point (20), to maintain it in a plane perpendicular to the rotor axis (34).
Patent DE-3931690-A1 (DE)
Title: Identification device for overboard ship passenger - uses automatically released signalling balloon with tethering line acting as electrical supply lead
Inventor: SCHOENWAELDER JOACHIM
IPC: G08B5/00
Filed: 1989-09-22
Abstract: The device is used to facilitate rescue in poor weather conditions and uses a signallying balloon (1) which is filled with a gas which is lighter than air, attached to the casualty via a (3). The balloon (1) is released upon contact of a life jacket capsule (2) with water and the line (3) can act as an electrical supply lead for a signal light (4) or radio signalling antenna carried by the balloon (1). Pref. the surface of the balloon has a grid of metal strips (5) and intermediate fluorescent zones (6), for aiding radar and visual detection. ADVANTAGE - Facilitates rapid location in rough weather.
Patent DE-3940044-A1 (DE)
Inventor: KOTOWSKI STEFAN DR
IPC: C25B9/04
Filed: 1989-12-04
Abstract: An anode device for electrolytic processes designed for zinc-plating steel strip or for chromium plating has a plate-type titanium anode having an active surface which is joined by a titanium current supply lead consisting of a sleeve-type part and a bush-type part to a plate-type support containing a steel core; the core has a continuous opening for receiving the bush-type part and is loosely enclosed in a sheath of titanium foil for protection against attack by the electrolytic solution; in the vicinity of the bush-type part, the sheath has openings whose edges are welded in a gas tight and liquid tight manner to the bush-type part.
Patent DE-4001265-A1 (DE)
Title: FSK digital data reception over power supply network - synchronising switching of signal with max. possible mean level to VCO clocked by control calculator
Inventor: BAIER PAUL WALTER PROF DR ING
IPC: H04B3/54
Filed: 1990-01-18
Abstract: The digital frequency synthesizer (28) is synchronised to the frequency of the AC voltage on the power line (10) carrying spread-spectrfum pseudo-random frequency-shifted-keyed data. It operates a switch (11) connecting the output (15) of an AGC circuit (14) to a synchronous VCO (17). Pulses (18) are addressed to a counter (19) reset after a fixed fraction of the bit period when the count is transferred to a latch (21). Frequency shifts are originated by a calculator (23) and zero-crossing detector (30). USE/ADVANTAGE - Enables reliable communication over LV building wiring without crosstalk or undue interference from external sources.
Patent DE-4003744-A1 (DE)
Title: Rotary switch with automatic cut=out upon voltage loss - has spring loaded return lever holding armature in self-holding position
Inventor: BORN PETER
IPC: H01H83/12
Filed: 1990-02-08
Abstract: The rotary switch has a mechanical operating element and an automatic cut-out device operating upon loss of the voltage when the switch is in the closed position. The automatic cut-out device uses a release coil (18) with an armature (21) attached to a slider (23) which is displaced along the outside of the release coil (18). A spring-loaded armature return lever (26) holds the armature (21) in its self-holding position and is displaced against its spring bias by the operating element, to release the armature (21). The spring force acting on the armature return lever (26) and the magnetic force acting on the armature (21) due to the release coil (18), are each greater than the force of the release spring (22). ADVANTAGE - Reduced number of components.
Patent DE-4005945-A1 (DE)
Inventor: FERNSCHILD GUENTER
IPC: C07C17/00
Filed: 1990-02-26
Abstract: A process for preparing ethane derivatives containing the trifluoromethyl group in good yield is described which is carried out in liquid phase and is particularly suitable for preparing CF3CHCl2 (R123).
Patent DE-4012614-A1 (DE)
Title: Coupling clamp fixing carrier plate to rod - has strip gripping holder halves gripping, in turn, bolt head in conical cavity
Inventor: BOEHME GUENTHER
IPC: A47B21/00
Filed: 1990-04-20
Abstract: A strip grips around the pole and has its two ends gripping a transfer clamp piece (8) formed of two transfer   elements (6,7) These have through bores (14,15) and fit within the free ends of the strip, the bores cooperating with holes in the strip. The transfer elements (6,7) also have receiver halves (19,20) which together form an internally expanding comic region (22) that receives the core (23) of a connector element (11) coupled to a support (12). Pref. the connector element has a channel through itself for passage through of an electric cable. The transfer element pref. has a corresp hole. USE/ADVANTAGE - Allows any orientation with simultaneous cabling for flexible construction of shelves, desks, tables, cabinets etc. allowing non-interfering wiring for lighting, office appts. such a v.d.u. or computer.
Patent DE-4015624-A1 (DE)
Title: Model garden for architectural presentation - employs basic sheet, and plant sheet with trees, plants, and flowers printed for subsequent cut=out
Inventor: ZUMKIER-KADEN URSULA
IPC: G09B25/08
Filed: 1990-05-15
Abstract: A basic support surface is used, and a variety of illustrated trees, bushes, plants and flowers (15) can be applied to it by means of a foot section to stand vertically at required locations. The basic support surface comprises a sheet, and the plants, trees, etc. (15) are flat printed representation which can be sepd. from a printed plant sheet along perforation lines, for application via their foot sections. The plant sheet is printed on both sides with illustrations of the trees, bushes, etc. The foot sections of the sepd. plants, etc. can be bent through approximately 90 deg. along a horizontal fold line (12) against the plant plane into a position for connection with the basic sheet. USE - For architects, to depict garden arrangements in model presentations of site plans.
Patent DE-4016755-A1 (DE)
Title: Control valve for antilock vehicle brakes - has hydraulic controlled pressure regulator and hydraulic inlet valve
Inventor: VOLZ PETER DR
IPC: B60T8/50
Filed: 1990-05-25
Abstract: Each wheelbrake circuit has a solenoid controlled venting valve (114) and a hydraulic pressure control valve which operates on the pressure drop in the venting circuit and activates the inlet valve to isolate the brake circuit. A flow restriction provides a controlled fluid flow and a control valve incorporating a slider valve (127) and a flow restriction (109) provides the controlled pressure drop and pressure rise in the brake modulation cycles. The spring operated pressure control valve replaces the separate solenoid valve for the inlet valve and its associated control circuit. Only one control circuit is required for the venting valve. The dimensions of the springs and valve components determine the pressure patterns. ADVANTAGE - Simple control circuit, compact.
Patent DE-4024176-A1 (DE)
Title: Covered drain channel system - is made up of precast concrete components having sides and cover in one piece
Inventor: LOCKWOOD WILLIAM D
IPC: E01F5/00
Filed: 1990-07-30
Abstract: The covered channel is made up from precast concrete components with longitudinal strip foundations (12). The foundations carry a number of inverted 'U'-shaped units (10) with vertical sides (22) and curved reinforced top (24) in one piece. The span of the units is greater than the length. At the ends of the channel precast wing units (95) are set diverging from the sides (22), carried on strip foundations (12), and buttressed by profiled anchor units (110). USE/ADVANTAGE - The inner surface of the sides is smooth to offer min. resistance to running water.
Patent DE-4025728-A1 (DE)
Title: Forming total dental prosthesis
Inventor: BECKER WOLFGANG
IPC: A61C13/00
Filed: 1990-08-14
Abstract: The method forms a dental prosthesis, partic. a total one, with a top- or bottom-jaw base, using a milling machine. The base(23) is milled out from a plastic material block to match the contours of the mouth cavity in contact with it, and forms the initial product for further operations to form the prosthesis.  The contour can be determined by taking an impression. The contour and surface scanning can be helped by using data stored in a computer. The intermediate space between the base and teeth can be completed by matching to preprogrammed radii of curvature stored in the computer.
Patent DE-4027099-A1 (DE)
Title: Dressing interior wall of pipework - by shaping profile of hot e.g. crosslinked polyethylene tube, inserting into pipe, heating to expand it to pipe wall and drawing through pi
Inventor: WENDORFF ERNST
IPC: F16L55/165
Filed: 1990-08-27
Abstract: Pipes are sanitised by means of a liner. In the process, a tube of resilient material is formed into a cross-section whose o.d., e.g. its circumscribing circle, is smaller than the i.d. of the pipe to be dressed and which also allows it to be curved. This tube is inserted into the pipe and is inflated so that it takes up the shape of the i.d. of the pipe. The inserted tube is pref. made of cross-linked polyethylene. A tube (2) of resilient material is extruded and immediately, i.e. while still hot, passed through rollers (7) so as to be formed into a symmetrical cross-section (3). The example shown has three rollers (7) but alternative numbers can be used. They (7) can be driven or not and can be positioned together or at longitudinal intervals. This shaped tube (2) is placed inside the pipework to be dressed and is heated, so that it assumes its original profile and touches the i.d. of the pipe. Heating is by e.g. hot air or steam, which can be pressurised also to ensure that the tube presses against the i.d. of the pipe. ADVANTAGE - The procedure enables e.g. leaking or otherwise inadequate pipework to be sanitised without its being excavated or (partic.) destroying the soil covering. (5pp Dwg.No.2/6)
Patent DE-4027207-A1 (DE)
Inventor: MAUS WOLFGANG
IPC: F02B77/08
Filed: 1990-08-28
Abstract: In a process for monitoring of the catalytic activity of a catalyst in the exhaust gas system of an internal combustion engine (3), a measured value of is temperature derived from signals generated by at least two temperatures probes (4, 5, 6) connected to the catalyst (1). The measured value of temperature is either observed over a long period of time in order to derive a mean value, taking into account a plurality of operating conditions of the internal combustion engine (3), or reduced to an expression independent of the particular operating condition, taking into account other measured values which are obtained by means of an engine-monitoring system (7) and which characterize the corresponding operating condition of the internal combustion engine (3). The measured value of temperature is then compared with a predetermined limit value. If the measured value of temperature is less than the limit value, a message indicating a defect of the catalyst (1) is sent to the display.
Patent DE-4029593-A1 (DE)
Inventor: CHMELIR MIROSLAV DIPL CHEM DR
IPC: C08F2/44
Filed: 1990-09-19
Abstract: Production of an absorption material for water, aqueous solutions or bodily fluids from a water-swellable synthetic (co)polymer (A) and a natural or synthetic polymer (B) which is a flowable powder at normal temperatures and which is insoluble or only difficultly soluble in water comprises adding dry or partly swollen (B) to the production system for (A) at a conversion to (A) of ≥ 30 (especially ≥ 60)%, mixing with polymer (A) gel and then drying the product.
Patent DE-4029701-A1 (DE)
Title: Pressing appts. for pattern thin foil for thermal insulation - comprises counter rotating compressed running rollers with impressed intersecting grooves and elastic rubber compressible covering
IPC: B31F1/07
Filed: 1990-09-19
Abstract: Appts. has two counter-rotating rollers of which one has impressions in pref. pattern, and the other is covered with an elastic compressible coating. The gap between the axes of the two rollers is smaller than the sum of radii, and a feeder passes the metal foil between them. The resilient covering is pref. rubber material. Pref. counter-rotating rollers (1, 2) have one (e.g. 1) with embossed pattern (11) which is the negative of that required. The other roller (2) has the covering of compressible material which therefore can sink into the embossed grooves. The films (3) or foils etc. are passed between the rollers. Parallel concave grooves run across the roller (1) and are crossed at e.g. 45 deg. by a second gp. of parallel grooves to form the pattern. Embossed foil withstands tension. ADVANTAGE - Used for operating with aluminium foils 50 - 100 micron thick or more. The prods. can be used for thermal insultion prodn..
Patent DE-4029733-A1 (DE)
Title: Bonded fibre material for prodn. bituminised roofing strip - bonded fibre material for bituminised roofing strip prodn.
Inventor: MATEJCEK FRANZ DR
IPC: C08F236/10
Filed: 1990-09-20
Abstract: Bonded fibre material (I) comprises (A) 5-50 wt. % aq. dispersion (binder) with disperse phase contg. (A1) 30-90 wt. % conjugated diene (w.r.t. dry phase), (A2) 0-50 wt. % copolymerisable alpha, beta-unsatd. mono- or di-carboxylic acid or amide, ester or nitrile, vinyl ester and/or cinyl-aromatic monomer and (A3) 3-20 wt. % olefinic comonomer with OH gp.(s), (B) 50-95 wt. % normal non-bonded fibre fabric with softening pt. above 320 deg. C and opt. (C) other resins, waxes or bitumen; (I) is obtd. by treating material (B) with a liq. contg. (A) at pH below 8, drying at 170 deg. C or above and opt. applying (C). Pref. disperse phase in (A) is a copolymer with Tg below 0 deg. C, derived from 40-85 wt. % (A1) (pref. butadiene, isoprene and/or chloroisoprene), 0-50 wt. % mono- or di-acid or derivs. as above and/or styrene (A2) (pref. (meth)acrylic acid or derivs. thereof and/or styrene) and 5-15 wt. % (A3) hydroxyethyl acrylate (HEA), hydroxypropyl acrylate (HPA) and/or butanediol monoacrylate (HBA); impregnating liq. has pH below 5, with pref. solids content 10-30 wt. %, and drying temp. is at least 180 deg. C. USE/ADVANTAGE - (I) is useful for the prodn. of roofing strip (claimed). The invention provides bonded fibre material with thermal stability equiv. to that of materials based on dispersions contg. N-methylol gps., but which does not liberate formaldehyde during drying. (7pp Dwg.No.0/0)
Patent DE-4033240-A1 (DE)
Title: Control unit for defrosting refrigerator or freezer - has counter for number of door openings in defrosting cycle and timing unit measuring total of open times
Inventor: SCHUBACH RUDOLF
IPC: F25D21/00
Filed: 1990-10-19
Abstract: The counter (40) and the timing unit (42) are electronically logic connected with each other in the control unit (22) in such a way that a comparison of the measurement values (No,To) with an associated limit value can be carried out according to the formula: a. To + b . No is greater than X. No is the number of door openings within a defrosting cycle. To is the total duration of the opening times within the corresp. defrosting cycle, a,b are constants, which are dependent on the construction design of the refrigerator or the freezer. X is the limit value, which is dependent on the construction design of the refrigerator or the freezer. The defrosting system (20) is switched on or the defrosting cycle is started if the condition corresp. to the above formula is fulfilled. Additional timing units (44,46) can be provided. ADVANTAGE - Type unit designed so that energy consumption of refrigerator or frezer is reduced.
Patent DE-4033981-A1 (DE)
Title: Memory circuit board with semiconductor recording medium - has SRAM or EEPROM with preset wafer size for estimated storage capacity
Inventor: NAGASAKI TATSUO
IPC: G06F12/16
Filed: 1990-10-25
Abstract: The circuit board comprises a SRAM (1) with a preset wafer side for the required memory capacity, permitting an estimated number of memory shells for interferring defects on a semiconductor substrate main surface. A control signal transmitter delivers a control signal, effecting a read-out/write access of desired information signal. A fault correction code adding circuit (3) adds a fault  correction code to an information signal to be stored and for recording of such signal in the SRAM. A fault correction circuit (4) acts on the information signal with the added fault correction code on its read-out. It also transmits a corrected information signal. USE/ADVANTAGE - For inspection using electronic still image camera. Sufficient size for recording digital still image signals.
Patent DE-4037034-A1 (DE)
Title: Protective firearm helmet - has hard hat part and shock-absorbing inner basket formation
Inventor: ZAHN CHRISTIAN
IPC: A42B3/14
Filed: 1990-11-22
Abstract: The inner basket formation (2) of the helmet has an all-round strip (3) acting as head band, together with further strips running in star formation (5) to a central point (4) between which are aerating intermdeiate spaces (6). The head band is of thicker material than the other strips. A breathing protection mask (7) is incorporated, which has a viewing plate (8) and two connections (9,10) with filters and valves for the aspirated and exhaled air. On both sides, the breathing protection mask has strip-shaped projections (11) in which are buttonhole-type apertures (12) accommodating mushroom-shaped bolts (13). USE - As a protective helmet for firemen.
Patent DE-4041293-A1 (DE)
Title: X=ray radiator with transmission cathode - has plate capacitor for deflecting focussing of beam towards anode
Inventor: SCHMIDT ROLAND DIPL PHYS DR
IPC: H01J35/24
Filed: 1990-12-21
Abstract: The cathode (1, 2, 4) of the X-ray radiator transmits focussed electron beams (3) to an anode (9). Coupled to the cathode is a plate capacitor (6, 7) for deflecting of the electron beams, and thus the focal point (10) on the anode. The capacitor lies on a DC voltage, whose magnitude determines the focal point location. Pref. the plate capacitor defines an actuated passage (8) for the electron beams. The latter pass through a focussing head (4) coupled to the plate capacitor via an intermediate, insulating ceramic member (5). ADVANTAGE - No need for magnetic coil for beam focussing deflection.
Patent DE-4104165-A1 (DE)
Title: Catalyser for reducing pollutants in exhaust gases - is heated by exhaust gas which has passed through pre-catalyser
Inventor: FLUESS HEINO DIPL ING
IPC: F01N3/20
Filed: 1991-02-12
Abstract: The exhaust system (10) is fitted with an exhaust gas catalyser. A device which can be switched on or off heats the catalyser to a defined temperature in order to reduce the level of pollutants in the exhaust gas. The device uses a mixture of exhaust gases and flue gases from a burner, as a source of heat. The exhaust gases in this mixture have first passed through a pre-catalyser which is provided with means of heating, such as an electric element (24). USE - Reduction of exhaust gas pollution in i.c. engine.
Patent DE-4106558-A1 (DE)
Inventor: PRZYBILLA KLAUS JUERGEN DR
IPC: C08F20/30
Filed: 1991-03-01
Abstract: The invention concerns new polymers with units consisting of esters of  alpha , beta -unsaturated carboxylic acids and a positively acting radiation-sensitive mixture which contains these polymers as binders and is insoluble or at least only slightly soluble in water or in aqueous-alkaline solutions. The mixture also contains a photoactive compound which, when irradiated, releases a strong acid that splits off protective groups present in the binder and causes a sharp increase in the solubility of the binder, and hence of the mixture, in aqueous-alkaline solution. The mixture is sensitive to UV, electron and X-radiation and is particularly suitable for use as a resist material. The invention also concerns new esters of  alpha , beta -unsaturated carboxylic acids from which these polymers are constructed. The invention further concerns a positively or negatively acting radiation-sensitive recording material with a carrier on which a positively or negatively acting layer containing the radiation-sensitive mixture of the invention is located.
Patent DE-4106687-A1 (DE)
Title: Disposal of household and industrial refuse - by wrapping it in air and water-tight plastics film before placing on refuse dump
Inventor: ALTVATER JAKOB
IPC: B09B3/00
Filed: 1991-03-02
Abstract: The invention concerns a method of disposing of household and industrial refuse and also disposing of dangerous material. The refuse is sorted, if necessary, and then compacted in order to eliminate any hollow spaces in the refuse. The refuse is then formed into bales which are wrapped in a rot resistant, air and water-tight plastic film and then deposited on a refuse dump. The refuse can remain in the dump for a long time without the need to seal the dump to prevent the seepage of contaminated water. USE - Refuse disposal.
Patent DE-4107271-A1 (DE)
Title: Window operated locking device for side door of vehicle - uses bolt shaped element with deformable plastics profile
Inventor: BALL WILFRIED
IPC: B60J5/04
Filed: 1991-03-07
Abstract: Vehicle with a side door having a door frame (3) and a movable window (7) arranged within it whereby a spring loaded bolt shaped locking element (9) with a deformable plastic profile is provided which locks the door frame in the window region relative to the vehicle bodywork. The locking element in the door frame can be moved by the window in the locking sense (against the direction of the arrow 6) or moved in the unlocking sense as the window is lowered. ADVANTAGE - Ensures optimal locking conditions for door when a vehicle is travelling at high speed.