baber/WOPTO huggingface dataset:
Patent DE-4105018-A1 (DE)
Title: Semiconductor film analogue investigation method for duration wave HFETs mfr. - evaluating photoluminescence spectrum to identify high charge carrier density component rates
Inventor: BRUGGER HANS DR RER NAT
IPC: G01R31/265
Filed: 1991-02-19
Abstract: The method takes a photoluminescence spectrum of the semiconducting layer structure after manufacture of the component plates. The energy band interval of the spectrum is compared with the two=dimensional state density of a suitable referernce curve and the charge carrier density of the hetero-structure quantum wave derived directly from it. The HFET is finally manufactured. USE/ADVANTAGE - Enables suitable component plates, i.e. those with high charge carrier density in conducting channel, to be rapidly and simply identified.
Patent DE-4106132-A1 (DE)
Title: Gp. antenna test arrangement for checking directional characteristic - has transducer in near field, detects pulse signals from transducer or antenna as antenna characteristic is rotated by defined angular increments
Inventor: MEUSER WILFRIED DIPL ING
IPC: G01R29/10
Filed: 1991-02-27
Abstract: Testing the directional characteristics of the a group antenna with a number of separate individual antennas involves arranging a transducer in the near field in the transmission medium. All the antennas are connected together and in the transmission case a pulsed signal of defined frequency is radiated. In the receive case the signal is radiated by the transducer. The group antenna is rotated by defined increments for each transmission pulse. The received pulses in each case are displayed for each angular increment and the side lobes compared with a tolerance curve to check conformance to a specification. USE/ADVNATAGE - Checking conformance to directional characteristic specification in far field for transmission and reception without expensive measurement antennas or positioning problems.
Patent DE-4107492-A1 (DE)
Title: Extinguishing fires at oil and gas outlets, partic. in oil and gas boring - involves turning cup-shaped container upside-down over the outlet
Inventor: COHAUSZ HELGE B DIPL ING
IPC: E21B35/00
Filed: 1991-03-08
Abstract: A cup-shaped container, inverted so that it is open at the bottom, is put over the outlet. Variants are claimed for the container material, shape and size, and for the method of placing it in position. USE/ADVANTAGE - Extinguishing fires at oil and gas outlets, in partic. oil/gas borings. As opposed to the explosion method, which is time-consuming and not always successful, the proposed extinguising system is quick, simple and reliable.
Patent DE-4111708-A1 (DE)
Inventor: SEOK YONG-SIK
IPC: G11C11/401
Filed: 1991-04-10
Abstract: There is disclosed a redundant device for a semiconductor memory device comprising a plurality of normal cell arrays each having sense amplifier comprising an isolation gate for isolating or connecting the bit lines between adjacent ones of the normal cell arrays in response to isolation signal, a redundant cell array connected only with one of the adjacent redundant cell arrays, a control signal generating device for generating the isolation signal and a sensing signal to control the sense amplifiers respectively corresponding with the normal cell array connected with the redundant cell array and the normal cell array not connected with the redundant cell array, and device for generating a redundant control signal in response to a defect of an externally inputted address signal and a signal to select a word line of the redundant cell array.
Patent DE-4114107-A1 (DE)
Title: Rubber crushing machine with through conveyor - has links on conveyor designed to transmit compressive force
Inventor: PFROMM PETER
IPC: B02C1/02
Filed: 1991-04-30
Abstract: The machine is used for breaking up building rubble or similar material. It has a chain conveyor (2) which transports the material through the machine. The conveyor chain (12) is driven at the machine input end by means of a toothed wheel or drum (13) which is driven by a motor (15). A turn-round wheel or drum (17), which is acted on by a hydraulic cylinder, maintains the chain tension. The hydraulic cylinder is supplied with hydraulic fluid from a pneumatically loaded hydraulic accumulator which maintains a constant hydraulic pressure. The conveyor chain has links which are capable of transmitting a compressive force. USE/ADVANTAGE - Rubble crushing machine with easily accessible driving motor.
Patent DE-4118568-A1 (DE)
Title: Glycerol ether prodn. - by reacting aq. alkyl sulphate paste with glycerol in presence of base
Inventor: JESCHKE RAINER DR
IPC: C07C43/13
Filed: 1991-06-06
Abstract: Prodn. of glycerol ethers of formula (I) is effected by reacting an aq. paste contg. an opt. ethoxylated alkyl sulphate of formula R4(OCH2CH2)nOSO3X (II) with glycerol in the presence of a base at 150-220 deg.C. (R1-R3 = H or R4, but not all H; R4 = 6-22C alkyl; n = 0-10; X = alkali(ne earth) metal or NH4). Pref. paste has a solids content of 20-70 wt.%. The reaction is effected at 190-200 deg.C and 400-600 mbar using 0.1-1 mole (II) and 0.1-1 mole base (esp. alkali metal hydroxide) per mole glycerol. (II) is a 12-18C alkyl sulphate (n = 0). USE/ADVANTAGE - (I) are surfactants useful as detergents, wetting agents (US2932670), emulsifiers (DE1100035) or Ca soap dispersants (US3350460). The process avoids health hazards associated with handling solid (II), and proceeds without foaming when carried out in the indicated temp. range.
Patent DE-4121348-A1 (DE)
Title: Ultrasonic pulse-echo method for testing semi-finished metal products - distinguishing between full and incomplete secondary crystalline structures of plastically deformed product whose longitudinal axis is longer than its transverse axis
Inventor: MOTSCH JOSEF
IPC: G01N29/24
Filed: 1991-06-28
Abstract: The method of using ultrasonic pulse-echo techniques to test semi-finished products is used for non-destructive testing of a plasticaly deformed and heat treated product whose longitudinal axis is longer than its transverse axis. The method is used for products or oxide dispersion hardened super alloys, zone annealed products and products which have been pre-heated and subjected to isothermal heat treatment. ADVANTAGE - Determination of crystal structure or texture orientation allows products with defined texture or mechanical characteristics to be made by controlling heat treatment.
Patent DE-4122470-A1 (DE)
Title: Aq. cleaning paste for hands, hard surfaces and glass - contains surfactants, copolymer, phosphate, white spirit and reducing or oxidising agent
Inventor: HAMANN ALBRECHT
IPC: A61K8/86
Filed: 1991-07-06
Abstract: A cleaning paste contains 4-15 wt.% of anionic tenside, 20-40% of nonionic tenside, 0.5-1-1.5% of maleic acid/acrylic acid copolymer, 2-10% of phosphate, 4-15% of white spirit, 10-30% of a reducing or oxidising agent, and water to 100%. The paste may contain 5-13 wt.% of xylene, 5-15% of a perborate activator, pref. diacetyl-dioxo-hexahydrotriazine, 0-12% of NaSO4 and 0-10% of Na2CO3. The reducing agent is NaHSO3 and/or Na2S2O6, and the oxidising agent is NaBO3. USE/ADVANTAGE - The paste is used to remove spots from fabrics, to clean soiled hands, to clean glass and other hard surfaces, and as a hydrophobilising agent (claimed). The compsn. has universal use in cleaning hands, hard surfaces and glass, and is more effective in removing spots. On panes of glass, mirrors and spectacles, the compsn. prevents the formation of deposits. Use of chloro-hydrocarbons to remove fatty soil is avoide
Patent DE-4123394-A1 (DE)
Title: Shut=off valve for pipes conveying solids-containing gases - incorporates angled flap edge overcoming any build up of solids
Inventor: STEEGE WOLF ZUR
IPC: F16K1/226
Filed: 1991-07-15
Abstract: The housing has a pref. circular seat for a movable flap (2). Its edge can be pressed against the seat (5) with the interposition of a seal (6) which is mounted on the seat. The edge (9) of the flap which presses against the seal is angled towards its closing direction (4) and in the closing position pref. includes with the flow direction (10) of the fluid an angle (x) which at most is equal to the angle (B) between the flow direction of the fluid and the top side of the solids (11) which build up on the seal (6). USE/ADVANTAGE - Shut-off valve for pipes. A certain wedge action is produced when the edge of the flap adjoins the seal so that even with a comparatively low torque considerable contact pressures and a good sealing action can be achieved.
Patent DE-4125038-A1 (DE)
Title: Sepn. appts. for removing starch from waste water - has gravity fed drinking water to reservoir with pump for high pressure spray head which breaks down foam formation
Inventor: LOSERIES HANS-GEORG
IPC: B01D17/00
Filed: 1991-07-29
Abstract: A plant for sepg. starch from waste water comprises a sepg. tank with a drinking water spray head fed from a high pressure pump to break up foam which occurs at the separating tank inlet. Drinking water is fed under gravity to a storage reservoir for the sprayed drinking water and the low pressure side of the submersed pump is electrically connected to a unit controlling waste water supply to the separating tank. The volumetric flow of the pump is slightly less than the inflow of waste water. The separating tank (1), which is below ground level, is connected to a potato peeling machine (2). The waste water outlet (3) from the peeling machine (2) has a sensor (4) which controls a pump (5) in a water storage reservoir (7). A water level sensor (6) also has an effect on the pump (5). Signals from the sensor (4) and the level sensor (6) are processed in a control unit (14) and are converted into impulses for controlling the pump (5) and a magnetic valve (9). When the pump (5) is switched on, the magnetic valve (9) opens and the water spray operates. The drinking water storage reservoir (7) has an enlarged upper inlet (10) to allow gravity feeding from the water supply. A high pressure line (12) to the spray head and the electrical cable to the pump (5) also enter through the inlet (10). An overflow pipe (13) is provided above the max. water level in the reservoir (7). USE/ADVANTAGE - The plant is used to separate starch from waste water e.g. in a potato peeling machine, increases foam breakdown and reduces drinking water usage.
Patent DE-4125585-A1 (DE)
Inventor: GRELL KARL-LUDWIG DIPL ING
IPC: C25D5/50
Filed: 1991-08-02
Abstract: Described is a steel component with an electrolytically deposited anti-corrosion layer of metallic material on its surface. The component has a Vickers hardness of at least 650 HV, and the corrosion-protection layer is thinner than the surface roughness of the hardened component before deposition of the protective layer.
Patent DE-4127903-A1 (DE)
Title: Opto-electronically controlled sorter for agricultural produce such as potatoes - has conveyor feed with produce directed past optical sensor unit illuminated by different wavelength light sources to identify quality and size parameters
Inventor: LIESSKE PETER
IPC: B07C5/342
Filed: 1991-08-22
Abstract: The sorter has a conveyor belt feed (1) with the produce being discharged past a measuring chamber (2). The chamber has a glass cylinder that is illuminated from above and below by two lighting units. The ends of the cylinder have a number of photoelectric detectors that respond to the passage of the produce. The lighting units provide emissions with different wavelengths and the detector outputs are interpreted by an electronic unit (10) to control a separator (9) to deflect the product into different sections (12). ADVANTAGE - Highly reliable measurements.
Patent DE-4128085-A1 (DE)
Title: Twin-circuit hydraulic antilock and antislip braking system - has multichannel hydraulic unit contg. electric motor-driven pumps with pressure limitation in one circuit only
Inventor: WILLMANN KARL-HEINZ DIPL ING
IPC: B60T8/48
Filed: 1991-08-24
Abstract: One braking circuit (I), acting on the nearside rear and offside front wheels (15,16), incorporates an additional hydraulic unit (14) including a pressure-limiting valve (59) with an output line (61) to a brake fluid container (8) above the master cylinder (5). The low-pressure reservoir (33) associated with the pump (35) in this circuit (I) is returned to the corresponding master cylinder outlet (6) via a proper non-return valve (58). USE/ADVANTAGE - On motor vehicles, in wheelslip control mode braking pressure is released only through master cylinder connection, unimpaired by excess fluid pumping, and one fewer electrohydraulic valve is needed.
Patent DE-4129082-A1 (DE)
Title: Chain drive for bicycles - has cranks moving through less than 180 deg.
Inventor: STRIEGNITZ ARIBERT
IPC: B62M11/02
Filed: 1991-09-02
Abstract: The drive is for two- and three-wheeled vehicles. It pref. uses muscle power for up- and down movement of crank levers, and a chain to transmit the movement to a drive wheel. The crank housing (1) has mounting device (2), adjusting ring (3), bearing shells (4), cross axle (5), and crank drivers (6), and sliding intermediate bevel wheels (9). The crank drivers have a thread (12), and bevel balance wheels (13), and the cranks (14) have a chain wheel (15). The cranks are offset by less than 180 deg. to 0 deg. and are in positive connection via crank drivers, bevel wheels, and bevel balance wheels. USE - Bicycle or tricycle drive system.
Patent DE-4130755-A1 (DE)
Title: Magnetic fluid treatment - has relative movement between field lines and fluid at angle which is not 90 degrees for increased effect
Inventor: HOERL ALOIS
IPC: C02F1/48
Filed: 1991-09-16
Abstract: The assembly to treat a fluid passing through, which is sensitive to a magnetic field, has a magnet assembly (1) and a fluid system (6) with a relative movement between them. The direction of the polarity (5) of the magnet assembly is across the relative movement. The relative movement along the field lines and the movement of the fluid system (6) are at an angle which differs from 90 deg. USE/ADVANTAGE - The appts. is used for the treatment of organic and biological fluids such as for plant growth, water treatment, manure treatment, and for the treatment of foods, juices and drinks including wine. The orientation of the relative movement improves the action of the magnetic field.
Patent DE-4131582-A1 (DE)
Title: Capacitive level measurement device for liquids or bulk material - uses measurement-, screening- and base-electrodes with intermediate insulation, and operates as capacitive potential divider
Inventor: POK ULRICH
IPC: G01F23/26
Filed: 1991-09-23
Abstract: There is a flat insulation element (4, 5) between the flat measurement (1) and screen (2) electrodes and between the screen electrode and the base (3) electrode. The electrodes are arranged for the maximum field line length between the measurement and base electrodes. USE/ADVANTAGE - For containers, silos or bunkers. Does not reduce storage capacity of measured container, is suitable for any container geometry and insensitive to adhering material.
Patent DE-4133102-A1 (DE)
Title: Treating phosphated metal surface - using nonionic surfactant soln. before electro-dipping lacquering using e.g. alkyl poly-alkyl-ethylene glycol ether
Inventor: WITTEL KLAUS DR
IPC: C23C22/83
Filed: 1991-10-05
Abstract: Process comprises treating the surface with an aq. soln. contg. as additive a max. of 1 g/l of a nonionic surfactant of formula R-(CpH2pO)x-H (I) where R is 6-18C alkoxy or a mono- or dialkylamine residue with 8-20C in the alkyl chain; p is 2 or 3 and x is 6-20. The surfactant pref. has a cloud pt. of above 25 deg.C (measured in a 1% aq. soln.). The surfactant is polyaddition prod. with ethylene oxide. Following lacquering the metal surface is again treated with the aq. soln. of the surfactant. A suitable surfactant is Zusolat 1008/85 (RTM for an alkyl-polyethyleneglycolether). ADVANTAGE - The process does not cause undesirable ecological effects and is simple to carry ou
Patent DE-4137198-A1 (DE)
Title: Surface-mount component dispenser, for e.g. resistors, capacitors, diodes, transistors etc. - has coupling between carriage and bed of machine defined to equalise stresses from differently weighted modules
Inventor: HUBER RUPERT
IPC: H05K13/02
Filed: 1991-11-12
Abstract: The surface mount component dispenser takes components for mounting on a circuit board (Lp) from reels (Gs) of tape (G) while tape covering film is peeled back on to a smaller reel (Sp). Supply modules (Zu) are arranged on a carriage (W) movable into the region of engagement of the placement head of the assembly machine (Ba). The carriage is coupled to a bed (Mf) or an adjoining part of the machine at a point defined in three mutually perpendicular dimensions. USE/ADVANTAGE - In automatic assembly on circuit boards or ceramic substrates. Elastic deformation of machine by forces from carriage is minimised.
Patent DE-4141250-A1 (DE)
Title: Roller for roller hearth furnace - has bearer body equipped with several bearer plates between which are insulating layers in which is embedded heat-resistant cord
Inventor: STAMM DIETRICH DIPL ING
IPC: F27D3/02
Filed: 1991-12-14
Abstract: In the insulating layers (3) of fibre material at least one heat-resistant cord (4) is embedded which is wound around the bearer body (1) in several winds. The cord forms counterpoised wound winding sections, which connect in an axial direction of the bearer body and passes through the complete thickness of the insulating layer. The cord forms at least two superimposed layers which are counter-wound and is fixed at least at one point on the bearer body which is at a distance from the two cord ends. The cord consists principally of insulating fibres. ADVANTAGE - The strength of the roller is increased, reducing the need for maintenance.
Patent DE-4142540-A1 (DE)
Inventor: GRUBER HEINZ
IPC: E21B33/128
Filed: 1991-12-21
Abstract: In order to plug the annular space (39) between a rock anchor (37) and the walls of a borehole (36) at greater depths (40) of up to 1 or 1.5 m, especially in very low-cohesion rock, the proposal is for a borehole plug (18) bounded on the front and rear faces by circular metal plates (2, 3) between which is a seal (19) consisting of a rubbery elastic material in the form of a pipe section. A given tension can be transmitted via a special fitting device via tension rods (14) arranged firmly on one circular plate (3) but movable and lockable with repect to the other (2) so that corresponding elastic deformation states can be adjusted in the plug which provide a seal against both the wall of the borehole (36) and the outside of the anchor (37). The connection between the fitting device and the ends of the tension rods (14) is limited in strength so that when a certain tension is reached this connection is automatically released, thus ensuring simple positioning of this borehole plug which provides permanently reproducible sealing conditions regardless of the actual shape of the borehole.
Patent DE-4143301-A1 (DE)
Title: Semiconductor wafer disc edge rounding method by grinding
Inventor: HINZEN HUBERT DR
IPC: B24B9/06
Filed: 1991-06-18
Abstract: The grinding action is carried out by an unprofiled grinding disc, a desired edge profile on the wafer being obtained by subjecting the rotating wafer and the rotating grinding disc to an approp. sequence of movements relative to each other. The grinding disc consists of a disc-shaped base member surrounded by a grinding portion which can be used both on a peripheral face and on an end face.     Pref. the desired edge profile on the semiconductor disc is produced by the end face of the grinding disc generating a conical bevelled portion adjacent to the flat surface of the semiconductor disc, and the peripheral face of the grinding disc generating an adjacent arcuate rounded portion.
Patent DE-4200038-A1 (DE)
Title: Vacuum oven for curing etch-resistant coatings in semiconductor wafer mfr. - uses combination of heat and vacuum pump extraction to remove solvent from etch-resistant layer
Inventor: UOYA SHIGEO
IPC: H01L21/027
Filed: 1992-01-02
Abstract: The oven comprises a base (1), supporting a heating plate (2), an air-tight enclosing hood (4) and a vacuum pump (5). The semiconductor wafer (4) is covered with an etch-resistant solution and placed on the heating plate and the air-tight hood secured in position. The heating plate is then raised to a temp. sufficient to evaporate the etch-resistant solution solvent and the oven pressure reduced to 13.332 mbar. The combination of heat and low atmospheric pressure ensures efficient removal of the etch-resistant solution solvent, thus improving the bonding between the etch-resistant layer and the semiconductor susbtrate and minimising the opportunity for sublimation. ADVANTAGE - Improved solvent removal and heat-resisting qualities of etch-resistant layer.
Patent DE-4202929-A1 (DE)
Title: Developer neutralisation of condensate from exhaust gases - has 1st container with overflow outlet, enclosing 2nd perforated container filled with granular neutralising agent
Inventor: SCHWARZ THEODOR HERMANN
IPC: C02F1/66
Filed: 1992-02-01
Abstract: Device comprises a container which has an overflow outlet. Inside this first container is a perforated second container which is filled with a granular neutralisation agent. The condensate inlet leads into this second container. The condensate inlet is pref. in the form of a perforated pipe located centrally within the second container and extending over the greater part of its height. The outlet consists of a vertical tube with an inlet opening in the lower part of the first container. The outlet is closed by a valve controlled by a pH probe located in the outlet pipe. USE/ADVANTAGE - For neutralising esp. condensate from combustion exhaust gases. Highly acid condensate can be neutralised, manufacturing costs are low, and maintenance and replacement of the neutralising agent are easily carried out.
Patent DE-4204517-A1 (DE)
Title: Microprocessor-controlled telephone circuit - uses four-wire bus for parallel subscriber devices and two-wire line for direct connection of main handset
IPC: H04M1/715
Filed: 1992-02-15
Abstract: The circuit has a control device (KES) coupled to the current supply (SV) and the telephone line (A) and to a number of telephone handsets (Fe App), one of which is directly coupled to the control device (KES) via a 2-wire line. Each of the remaining telephone handsets (Fe App) is coupled to a 4-wire bus (Bus) via a subscriber device (KET). The subscriber devices (KET) are connected in parallel. Two wires of the 4-wire bus (Bus) act as current supply lines and control lines, the other two wires act as telecommunication lines. ADVANTAGE - Reduced wiring.
Patent DE-4213601-A1 (DE)
Title: Determining thickness of planar transparent body by triangulation - measuring offset of reflection point, fixed w.r.t beam source, due to refraction through body
Inventor: DAUSMANN GUENTHER
IPC: G01B11/06
Filed: 1992-04-24
Abstract: A reflection point is arranged at a defined distance behind the body. An emission beam from the sensor passes to the reflection point at a defined angle to the body. The offset of the measurement point caused by refraction is measured at the receiver stage of the triangulation sensor. The thickness of the body is derived from the offset and the known refractive index of the material. USE/ADVANTAGE - Pref. for measuring thicknesses of transparent plane parallel films or plates using triangulation sensor with which previously only distance to transparent body was achievable.