baber/WOPTO huggingface dataset:
Patent DE-4106201-A1 (DE)
Title: Nonlinear planar optical element for optical computer - uses layer structures having dielectric layers with alternating refractive indices
Inventor: TRUTSCHEL UDO
IPC: G02F1/35
Filed: 1991-02-27
Abstract: The optical element has at least two dielectric layer structures, each having alternating dielectric layers with different refractive indices. The thicknesses of the individual layers within the layer structure are selected to act as an anti-resonant reflection optical waveguide. Pref. two such optical waveguides are separated from one another by a dielectric layer of given thickness. Each of the dielectric layers pref. exhibits a defocussed nonlinearity. USE - Complete bridging between em wave conducting systems, esp. for optical communications, e.g. operational switches, amplifiers, limiters, logical couplers.
Patent DE-4108146-A1 (DE)
Inventor: AGETHEN JOHANNES
IPC: B23K26/06
Filed: 1991-03-13
Abstract: A device for paring material, in particular biological tissues, has a laser system that generates laser pulses and a fiber-optic light guide system with fiber-optic light guides (1) gathered into a bundle (2) to which the laser pulses (6) are coupled and that guide the laser pulses (6) to the spot where material is to be pared. The bundle (2) is subdivided into at least two groups of fiber-optic light guides (1) and each laser pulse (6) is not coupled to at least one group of fiber-optic light guides (1).
Patent DE-4109264-A1 (DE)
IPC: C01F7/441
Filed: 1991-03-21
Abstract: In a process for producing grinding and/or polishing aluminium oxide from aluminium hydroxide, which can be produced on an industrial scale (in particular by the BAYER process), the aluminium hydroxide is pressed into highly compacted blanks which are then calcined at a temperature and for a length of time such that practically anhydrous aluminium oxide, consisting predominantly of alpha aluminium oxide, is obtained. The aluminium oxide powder so obtained has a very homogenous phase composition and, depending on the calcination conditions, exists as micro abrasive grain or as polishing alumina and is suitable for use in highest-quality optical equipment.
Patent DE-4110574-A1 (DE)
Title: Measuring light intensity distribution of light or lamp - using light measurement device on closed surface about lamp, measuring light intensity at defined camera positions, weighting and summing values in each direction
Inventor: RIEMANN MANFRED PROF DR SC TEC
IPC: G01J1/42
Filed: 1991-03-30
Abstract: The method of measuring the light intensity distribution of lamps and lights involves using a light measurement device positioned on a closed surface about the object to be tested. An optically imaging image measurement device is moved in two coordinates about the measurement object. The light density of the object is measured at defined camera positions. Image elements are associated with surface elements of the lamp which emit the light density in the observed directions. The density values are weighted with factors computed from the element sizes and summed. ADVANTAGE - Accurate measurements are achieved with lamps at considerable distance without requiring large measurement system.
Patent DE-4112934-A1 (DE)
Title: Passenger count security control system for aircraft - using both video and binary count systems to check boarded passenger numbers
IPC: B64D11/00
Filed: 1991-04-17
Abstract: The passenger count security control system for an aircraft uses video and binary count systems. A display terminal and video monitor indicate the number of seated passengers on board the aircraft and the number of vacant seats. The number of passengers already on board the aircraft is then compared with the number of boarding cards handed out. Pref. the baggage spaces above the seats are monitored to determine which are open and which are closed. The aircraft emergency exits are monitored to ensure that they are not blocked by luggage. ADVANTAGE - Allows aircraft boarding times to be reduced.
Patent DE-4114131-A1 (DE)
Title: Simultaneous haematological and immunological cell characterisation - using Azure B and Eosin, as well as antigen specific antibodies, with alkaline phosphatase as detector enzyme
Inventor: KOCH BERNHARD DR
IPC: G01N33/569
Filed: 1991-04-30
Abstract: Simultaneous, conventional haematological and immunological cell analysis comprises characterising the cells of peripheral blood, bone marrow or from puncture material using simultaneously (1) the dyes Azure B and Eosin and (2) antibodies (Ab) specific for cell antigens. Prim. Ab are pref. determined using sec. Ab or the biotin (strept)avidin system, with alkaline phosphatase (AP) as the detector. The AP substrates are Naphthol-AS-GR-phosphate and Variamin blue salt B. USE/ADVANTAGE - Combining the two techniques allows the haematological characteristics to be widened to include immunological markers, and the two methods for characterisation can be correlated. Immnuological characterisation is possible even when cells are present at a very low proportion of total cells in the smear. Method can also be used to determine binding specification of new monoclonal antibodies (by testing against haematologically defined cells). (2pp Dwg.No.0/0)
Patent DE-4118896-A1 (DE)
Title: Monitoring and displaying appts. for oil level in reservoir e.g. of compressor - shows level for reference or under load state during other states using last level change for correction
Inventor: WEISZ RAFAEL DR
IPC: G01F23/00
Filed: 1991-06-08
Abstract: The appts. for monitoring and displaying different levels for different operating states of a mechine is able to show the level for a defined reference state, i.e. under load, irrespective of each actual state, e.g. at rest, idling or under load. The actual level value is displayed during the reference or under load state. Level changes occurring when the operating state changes are measured and stored. In order to display the level for the reference state when in another state, the last measured level change is taken into account as a correction of the current value. USE/ADVANTAGE - For monitoring level in oil reservoir of working machine e.g. compressor. Measures level even when operating conditions and corresp. level are changing rapidly.
Patent DE-4121681-A1 (DE)
Title: Spring suction member for raising top sheet from stack - includes closed elastic element with apertures spaced from suction nozzle
Inventor: KAEMPFE JOERG
IPC: B25J15/06
Filed: 1991-06-29
Abstract: The apertures (9) in the elastic element (3) are pref. off-centre and can have suction lips (5) forming suckers (4). The elastic element can be designed as a membrane with the suckers (4) arranged to form with an adjoining frustoconical sleeve face (6) and the side of the suction nozzle (1) facing the membrane (3) a suction chamber (8). The impact pulse of the spring sucker is reduced so that the pre-loosened sheets are not pressed against the stack but an air cushion remains between the sheets. USE/ADVANTAGE - Improved operating speed whereby only single sheets are removed from stack of sheets.
Patent DE-4124952-A1 (DE)
Inventor: HESSE ANTON DR
IPC: C08L67/06
Filed: 1991-07-27
Abstract: The invention relates to a thermocurable moulding composition comprising an unsaturated polyester, monomers, a propylene polymer, free-radical initiators and conventional additives and assistants, where the propylene polymer is dispersed in the polyester resin in the form of solid, spherical particles having a smooth surface and a mean diameter of from 1 to 200  mu m.
Patent DE-4128999-A1 (DE)
Title: Fluid emulsion mixer - subjects the inner phase to high pressure to form thin flat layers which are mixed in a counterflow
Inventor: VERSTALLEN ADRIAN
IPC: B01F5/00
Filed: 1991-08-31
Abstract: To mix together two fluids as a dispersion and especially an emulsion, where the fluids are difficult to mix, the inner phase is subjected to a high pressure while the outer phase is given a generally low pressure. They are passed continuously over each other, without premixing, and brought together in thin flat layers by counter flow. To form a thin flat layer in each phase, before they are brought together, they are passed through a narrow gap and accelerated. After they have been brought together, the phases are mixed in the centre of the mixing zone. ADVANTAGE - The two fluids, such as oil and water, are continuously converted into a dispersion and especially an emulsion, with low use of energy.
Patent DE-4135258-A1 (DE)
Title: Fast power diode with low-loss soft recovery - has two portions with breakthrough losses and switching losses decoupled from each other and separately optimised
Inventor: TURSKY WERNER DR
IPC: H03K17/00
Filed: 1991-10-25
Abstract: The diode surface is divided into two parts, one (A) having soft recovery properties while the other part (B) has step recovery and carries the majority of the forward current. The parallel operation of both parts results in overall soft recovery with substantially reduced switching losses. The step-recovery portion has a thinner n-minus doped region (3) under a heavily p-doped region (2) with a flat profile at the p-n junction increasing blocking voltage. USE/ADVANTAGE - As a free-wheel diode in commutation branch circuits, the device benefits from reduced reverse current and blocking delay charge.
Patent DE-4140140-A1 (DE)
Title: Demountable lube oil canister filter which can be dismantled for replacement - has pan-shaped upper housing with valves to limit flow rate and prevent back-flow used for internal combustion engines
IPC: B01D27/10
Filed: 1991-12-05
Abstract: Screw-on filter for a combustion engine, consisting of a pan-shaped upper housing section, a separable filter-housing possessing a lower cover form housing section, and one of various individual components such as an exchangeable filter element, gaskets, and various values as are necessary to limit the flow rate or prevent back-flow, jointly held in the holding assembly which is separable from the filter element, where the separation line of the upper form the lower housing sections occurs near to screw mounting point, and the lower housing section is releasable which the holding assembly remains firmly connected (as per DE4124323), and housing the novel feature that the holding assembly (10) has an internal threaded bore (17) for attaching by to a corresponding mounting nipple, and has an opposing external thread (18) for attaching to the lower housing section (3). USE/ADVANTAGE - Simple construction. It is easily installed and removed from its housing.
Patent DE-4200992-A1 (DE)
Title: NMR tomograph with transmitter aerial and surface coil - has non-metallic line for energy supply from current supply source
Inventor: OPPELT RALPH DIPL ING DR
IPC: G01R33/36
Filed: 1992-01-16
Abstract: For transmission of HF signals to a display section is provided a whole body aerial, while for the reception of the spin signals a surface coil is used. The latter is coupled to a CPU and to a separate current supply source (PTU), via an electronic signal processor. The energy feed from the current supply is over a non-metallic line (7). To the latter, on the aerial side, is pref. allocated an energy converter (8), while the current supply itself is also fitted with an energy converter. Heat energy may be used for the energy supply from the current supply source. USE/ADVANTAGE - For medical examinations, without envelope wave problems due to non-exact earth symmetric connection waveguide to surface coil causing standing waves.
Patent DE-4203692-A1 (DE)
Title: Air conveyor system for solid granular materials - has supply opening above inclined perforated plate to avoid deposits
Inventor: SCHULZE ERWIN
IPC: B65G53/40
Filed: 1992-02-08
Abstract: The air inlet opening is in front of the perforated plate 92) which is set inclined in the channel with its lower area extending in the flow direction. The perforated plate can have a slightly S-shaped curve so that the middle part (2a) runs at an acute angle (2b) to the channel axis (3). The air inlet opening (9) can have a smaller diameter injector tube extending in the flow direct over the perforated plate and reaching over the lower extension of the plate. The injector tube can be held by a support tube which is spaced therefrom to form an annular space. ADVANTAGE - A damaging vortex is avoided and a type of ski jump effect is produced for the incoming material.
Patent DE-4204957-A1 (DE)
Title: Video mixer for providing special effects - mixes video signals with control signals and video signal reference pulses used to prevent edge errors.
Inventor: KARALLUS GUENTER
IPC: H04N5/272
Filed: 1992-02-19
Abstract: The video mixer allows supplied video signals to be mixed with control signals generated by the mixer and video signal reference pulses of given amplitude, provided within different time slots. The amplitudes of the video signal reference pulses and the control signals are regulated by comparison with a reference voltage, using an amplifier with a variable amplification factor. The amplitude of the reference pulses may correspond to the white signal value of the video signals. ADVANTAGE - Prevents image edge errors caused by amplitude errors in video signal.
Patent DE-4206129-A1 (DE)
Title: Two-part plastics sprocket for fitting on shaft - has peripheral groove with smaller min. dimensions in rotary direction of sprocket than size of fitting spring
IPC: F16H55/30
Filed: 1992-02-28
Abstract: The groove (6), which is formed on the inner circumferential face at the transition between the two sprocket halves (1,2), can comprise an angle (7) moulded from the dividing face (9) of the plastics sprocket (3)  in one sprocket half (1), and a section (8) opposite this angle in the boundary face (9) of the other sprocket half (2). The distance in the rotary direction of the sprocket between the radially inner part of the  section (8) of the boundary face, and the wall face (12) in the other sprocket half, defining the groove or angle is less than the dimensions of the spring (5) in the rotary direction of the sprocket.  The sprocket halves can be connected together by screws. ADVANTAGE - Simple force locking connection between wheel and shaft,and easy assembly.
Patent DE-4208000-A1 (DE)
Title: Detecting incorrect teeth count in inductive sensor in vehicle - measuring  and comparing wheel speed measurements during acceleration period and generating appropriate warning signal
Inventor: MATTERN KLAUS-PETER DIPL ING
IPC: G01P21/02
Filed: 1992-03-13
Abstract: The method is active whilst the slowest of a vehicle's wheels is accelerating from a lower, non-zero,  speed to a defined higher speed.  The duration of the acceleration period is measured.  The ratio of the speed (vmax) of the fastest wheel to that (vs) of another wheel on the same side is tested against a limit (fmin) which cannot be exceeded as a result of tyre tolerances, etc. The time for which the limit is exceeded is measured.  At the end of the acceleration period, if the second time exceeds a defined fraction of the acceleration period then an error is detected and a warning or switch-off signal passed to the associated control system. USE/ADVANTAGE - For use in anti-lock or anti-skid vehicle control systems. Faulty pulse wheel is detected early rather than after long filtering period.
Patent DE-4209211-A1 (DE)
Title: Rotary torque load coupling with bi-directional action - has coil spring load element that can be subjected to torsion to spread coils to provide torque transmission function
Inventor: SCHROEDER WALTER PROF DIPL ING
IPC: F16D41/20
Filed: 1992-03-21
Abstract: A bi-directional coupling provides a mechanical coupling between the input shaft (6) and the output shaft (2) using a coil spring (3). Dependent upon the setting condition, the unit can transmit or block the transmission in either direction of rotation. The coil spring is located on rotatable rings (9) with the ends located in further rings (7,7a). The shaft halves are located together on a needle roller bearing (12). Transmission of power between the halves depends upon the spring being subjected to a torsional load to cause the coils to spread and so grip the surface of an outer ring (4). Main bearings (A',B') support the shafts. USE/ADVANTAGE - Provides double-acting coupling mode.
Patent DE-4214336-A1 (DE)
Inventor: HARTMANN HARRY
IPC: G10D9/02
Filed: 1992-05-04
Abstract: A sound-generating reed for wind instruments made of fiber-reinforced plastics is characterized in that the base plastic substance is stabilized by at least one layer (27, 29) having fiber strands (31) that extend in a single direction in the longitudinal direction of the reed (7). The individual strands (33) of fibers have different material properties in order to dampen the vibrations of the reed (7).
Patent DE-4223636-A1 (DE)
Title: Reusable transport packaging for bulky furniture and appliances - is drawn by handles over object and then hangs from padded corners
Inventor: SCHRAMM WERNER
IPC: B65D65/08
Filed: 1992-07-17
Abstract: The flexible casing (10) has corners and side strips built in order to fit over the corresponding corners and edges of the item being packed. The cover is then stretched from edge to edge for fixing onto the item. The corners of the cover are formed by turning in part of the material and stitching same. The cover has handles (28). The cover is secured against slipping by elastic belts etc. Two flaps can be formed on the back of the material web. One of the flaps can have a closure and the back of the other flap can have a counter closure piece. After turning the edge strip round the corner and turning in to form the corners the two flaps can be fixed against each other by the closures so that the folded material is pressed against the item to cushion same for protection. USE/ADVANTAGE - For furniture and other bulky angular items. Easy handling allowing reuse of materials.
Patent DE-4224892-A1 (DE)
Title: Blackboard having write on continuous band for conference, seminar - read by charge coupled sensors to transmit data via personal computer to disc to provide record and so allow copies to be made
Inventor: RAUE AXEL DIPL ING
IPC: G09F11/26
Filed: 1992-07-28
Abstract: The blackboard displays graphics and characters in a continuous band (3) that passes around vertical rollers (4, 5) located within a frame (2) supported on legs (8, 9). One of the rollers is motor driven. The band is of plastic and can be written onto with a suitable pen. Located within the end space is an optical scanner (10) consisting of light sensitive, charge coupled devices that cover the full height of the band. The band is illuminated by an internal fluorescent tube (11). The system is coupled to a PC (12) and the data is entered onto disc (17) which can be used to reproduce copies of the information eg using a copier. USE/ADVANTAGE - Allows board contents to be recorded.
Patent DE-4227504-A1 (DE)
Title: Photovoltaic cell with active layer, or active layer regions - has separated voltage source forming electric field perpendicular to active layer, such that released charge is conducted to polarity of electric field opposite to charge polarity
IPC: H01L31/0216
Filed: 1992-08-20
Abstract: The active layer is exposed to solar radiation and has associated pole contacts or electrodes for the charge current. Between the poles (9,13) of a separate voltage source (10) the active layer (5) is provided, forming an electric field (22) orthogonally passing through the photovoltaic layer. The photovoltaically released charges can be conducted in the direction of a polarity (22a,b) opposite to the charge polarity. The contacts (7,8) or electrodes of the plus and minus pole of the cell (1) electric output are arranged in a region of opposite field polarity. ADVANTAGE - Increased cell efficiency by reduction of recombination losses.
Patent DE-4228570-A1 (DE)
Title: Fully recyclable tufted carpet
Inventor: BERG ELKE
IPC: D05C17/02
Filed: 1992-08-27
Abstract: Fully recyclable tufted carpet (I) is claimed, contg. a dimensionally-stable first backing material (A), loop pile nap (B) and opt. a second backing (C) of polyamide, polyester or polypropylene. The novelty is that all the polymer components belong to the same polymer family and the nap (B) is bonded to backing (A) with an adhesive applied in the form of a paste.     Also claimed is a process for producing (I), by tufting (B) into (A) and bonding it with a paste contg. a melt-type adhesive (II).     Specifically (A) is dry- or spun-bonded fabric or woven fabric, pref. consisting of a mixt. of fibres of the same polymer type with high and low m.pts. (II) is of the same polymer family as (A) and (B), and pref. has melting range 100-170 deg.C and particle size below 80 microns. (C) is a sheet of woven or non-woven fabric, double-rib material or felt, pref. contg. regenerated fibres, which is fixed to (A) with melt-type adhesive.
Patent DE-4234807-A1 (DE)
Inventor: GORES STEFAN DIPL ING
IPC: B01D46/12
Filed: 1992-10-15
Abstract: A filter device composed of filter elements (2) serves for filtering pollutants out of a gas stream. Pollutants deposited on these filter elements are removed by a pneumatic cleaning device, collected and centrally discharged. The cleaning device comprises a cover housing (7) which can travel on the clean gas side (4) of the filter device. Within the cover housing (7) can travel nozzles (8) which can be impinged with compressed air. Vertically orientated partitions (10) delimit sedimentation chambers (12) on the untreated gas side (3). These sedimentation chambers open out at the bottom into a collection channel (15), which itself opens out into a collection vessel (19). <IMAGE>
Patent DE-4241243-A1 (DE)
Title: Calcium carbide prodn. from calcium oxide and carbon component - obtd. from synthetic waste by pyrolysis and partial combustion of pyrolysis gas
Inventor: EBELING JOACHIM DR
IPC: C01B32/942
Filed: 1992-12-08
Abstract: CaC2 is prepd. by reacting a carbonaceous component with CaO in an electric arc furnace, using as carbonaceous component comminuted synthetic wastes which have been prepd. by (a) pyrolysis at 600-1000 deg.C, (b) partial combustion at 1200-1900 deg.C of the pyrolysis gas from stage (a) and (c) cooling of the C black/gas mixt. to 450-800 deg.C or sepn. of the C black with finely divided or lumpy CaO. The synthetic waste has a particle size of 1-100mm and a C content of 70-85 wt.%. Thermoplasts, comprising polyethylene, polypropylene or polystyrene are pref.. (a) Pyrolysis is in presence of up to 20% of CaO, w.r.t. the waste. (b) Partial combustion is in presence of less than the stoichiometric amt. of pre-heated air, w.r.t. the amt. of waste, opt. in a C black reactor. USE/ADVANTAGE - CaC2 is used in, e.g. prodn. of Ca cyanamide, NCN derivs., and C2H2 and C2H2 prods., and as desulphurisation agent in the Fe and steel industry. Synthetic waste is utilised completely and without harm to the environment, and a cheap C component for CaC2 prodn. is obtd.
Patent DE-4242455-A1 (DE)
Title: Operation of gear change lever in gearbox - involves lever held in position by plate spring and return spring, controlling path
Inventor: BUERGER HANS
IPC: B60K20/02
Filed: 1992-12-16
Abstract: A gear change device for a vehicle gearbox has a gear change lever with pivoting location, having a spherical bearing located in a ball socket in the housing, and pivoting about two axes (25-25,26-26) geometrically vertical to each other. The lever (4) is held in a neutral position, on one side by the housing and on the other via a plate spring (15) and return spring (13) supported on the sphere. The sphere moves freely in relation to the sphere, such that the return spring remains unextended when the lever is pivoted to engage or disengage a gear. USE/ADVANTAGE - Neutral lever position coupled to inner switching device to hold predetermined gear path, whilst avoiding springing out of engaged gear.