baber/WOPTO huggingface dataset:
Patent DE-4114784-A1 (DE)
Title: Guiding tool along subterranean path e.g. under river
Inventor: WALLIS NICHOLAS PETER
IPC: G01V3/08
Filed: 1991-05-06
Abstract: The tool includes a magnetic detector where a  transmitter loop is positioned as a reference for the tool at the surface. In one measurement phase, a direct current is caused to flow in one direction in the loop and the magnetic field in the vicinity of the tool in the one measurement phase is  measured by use of the magnetic detector. In another measurement phase, a direct current is caused to flow in the opposite direction in the loop and the magnetic field in the vicinity of the tool in the other measurement phase is measured by use of the magnetic detector. The tool is steered in dependence on the results of these measurements.
Patent DE-4115107-A1 (DE)
Inventor: LENARD PETER
IPC: B23H7/02
Filed: 1991-05-08
Abstract: The invention concerns electrical discharge machining of cutting tips (60) using an electrode wire (50) by programme-controlled rotation of a cutting tip (60) about a workpiece axis (A) and rectilinear displacement of the cutting tip (60) in relation to the electrode wire (50) along at least on of three axes (X, Y, Z) of an orthogonal co-ordinate system including one axis (X) parallel to the workpiece axis (A). When a flank (64) adjacent to a cutting edge (66) is machined, the cutting tip (60) is rotated about the workpiece axis (A) so that the point of contact between the electrode wire (50) and the cutting edge (66) lies in each case on a workpiece axis (E) extending at right angles to the electrode wire (50) and to two axes (X, Y) of the co-ordinate system. When sections of the flank (64) adjacent to the sections of the cutting edge (66) which are not parallel to workpiece axis (A) are machined, the electrode wire (50) is rotated about the workpiece axis (E).
Patent DE-4121638-A1 (DE)
Inventor: TRUCKENMUELLER KURT DIPL ING
IPC: D02G3/46
Filed: 1991-06-29
Abstract: There is described a yarn, in particular a sewing yarn, comprising at least two multifilament yarn components. The first yarn component forms predominantly the core of the yarn and the second yarn component forms predominantly the sheath of the yarn, the two yarn components having been intermingled with one another. The individual filaments of the second yarn component have a tenacity that amounts to between 5% and 70%, in particular between 10% and 50%, of the tenacity of the individual filaments of the first yarn component. <IMAGE>
Patent DE-4122109-A1 (DE)
Title: Controlling run=up of electronically commutated DC motor - correcting rotor position before supplying dynamic signal to stator winding
Inventor: SCHUMBRUTZKI WALTER DIPL ING
IPC: H02P6/20
Filed: 1991-07-04
Abstract: Run-up regulation is achieved by blocking the commutator for a given time interval after coupling the DC motor to a current source, during which the static rotor position is determined. The stator winding is then supplied with a current during a second time interval in dependence on the detected rotor position so that the rotor is rotated through a given angle in the same, or in opposition to, the normal direction of rotation before releasing the blocking of the commutator and supplying the stator winding with a dynamic signal controlled by a signal from a rotor position sensor. Pref., a run-up assistance circuit lying between the rotor position sensor (4) and the commutator (5) uses two timing elements (ZG14, ZG15), three analogue switches (6, 7, 8), a memory (13) and a resistance (R2). ADVANTAGE - Reliable motor run-up for each possible rotor position.
Patent DE-4126022-A1 (DE)
Title: Vane cell pump - has curved ring which can hold blades inside rotor under certain operating conditions
Inventor: ALSCHWEIG EKKEHARD
IPC: F01C21/08
Filed: 1991-08-06
Abstract: A curved ring (2) in a pump housing (1) contains a rotor (3) which has several radial slots (4) with parallel walls into which fit parallel walled blades (5). The sections of housing facing the curved ring (2) and the rotor (3) form working chambers together with the rotor (3) and the blades (5). The working chambers have suction and pressure zones (8,9,10,11). Under certain pump operating conditions the blades are held inside the rotor (3). This may be brought about by the creation of under pressure in spaces (13) behind the blades (5) due to the operation of a shut off valve (16) between the sub-blade spaces (13) and the pump delivery side, or by the use of magnetism. ADVANTAGE - Reduced power loss leading to improved overall efficiency.
Patent DE-4126313-A1 (DE)
Title: Spectacle lens grinding and polishing machine -  performs correction for difference between spacing of lens centres and measured pupil spacing
Inventor: MATSUYAMA YOSHINORI
IPC: B24B9/14
Filed: 1991-08-08
Abstract: The machine is controlled via 3-dimensional information relating to the shape of the spectacles frame, with a measuring device used to provide the spacing between the geometric centres of the left and right lenses and an input device used to enter the measured pupil spacing. The difference between the spacing of the geometric spacings and the pupil spacings, to allow correction of the obtained lens curvature of the front face of each lens. ADVANTAGE - Allows lenses to be individually tailored for each wearer.
Patent DE-4132167-A1 (DE)
Inventor: BAUER CLAUS
IPC: F27B7/20
Filed: 1991-09-27
Abstract: In order to develop, in cement clinker production plants with partial gas extraction, which allow operationally safe production of, in particular, low-alkali cement clinker, a method of reducing the emissions of pollutants such as, in particular, NOx and SO2, without having to treat the extracted partial gas stream in an expensive manner in a dedicated denitrification and/or desulphurisation device, it is proposed according to the invention to recirculate the partial gas stream (27), branched off as part of the rotary kiln exit gas, after cooling (28, 29) and dust removal (31) into the clinker cooler (20) and to use it therein as coolant and subsequently again in the rotary kiln (19) as combustion air, especially as secondary air for the rotary kiln burner (39). <IMAGE>
Patent DE-4134581-A1 (DE)
Inventor: GULCZYNSKI FRANZ
IPC: B25D17/04
Filed: 1991-10-16
Abstract: The invention relates to a fluid-powered impact tool for a hand-guided breaking or drilling appliance, with a handle which is arranged on a head housing and is connected to a flexible element and a pin releasing the fluid supply, in which arrangement a steel leaf spring (11) lying transversely to the tool axis extends through the handle (2) and has a bore (15) lying parallel to the tool axis in the area of the head housing (1) of the handle (2), in which bore (15) a displaceable sleeve (5) is arranged into which the free end of the pin (7), having a stop collar (16), projects, and the spring (6) loading the pin (7) is supported on the one side on the end face of the pin (7) and on the other side on the inside of the base of the sleeve (5). <IMAGE>
Patent DE-4141385-A1 (DE)
Title: Windscreen-wiper blade on vehicle - contains seal for hollow bar forming supporting member
Inventor: BOISSAC JEAN-PAUL
IPC: B60S1/04
Filed: 1991-12-16
Abstract: The windscreen wiper blade is particularly for a motor vehicle, having a hollow bar (1) forming a supporting member. This works with a wiper bearing (3) via a protrusion (5) on the latter. The blade contains a seal (10) for the bar with bearing. This can bear against the bar and the protrusion, and can be formed by an elastic stopper inside the bar, typically of injection moulded foam material. USE/ADVANTAGE - Prevents water and dirt penetrating inside bar.
Patent DE-4143120-A1 (DE)
Title: Tunable electric coil e.g. line resonator, filter - comprises resonant LC circuit with electronically variable inductor
Inventor: HUETTLINGER JOH LEONHARD
IPC: H01F21/08
Filed: 1991-12-23
Abstract: The electric coil comprises an LC circuit (115) with a ferrite-cored inductor (108, 114) incorporating a secondary control winding (101). Application of a dc control current to the secondary winding varies the magnetic flux in the ferrite core, altering the inductance of the primary winding (114), thus changing the natural resonant frequency of the LC circuit. A Variable capacitance diode (102) is connected across the secondary winding. USE/ADVANTAGE - Simple electronic method of varying natural frequency of resonant circuit.
Patent DE-4210318-A1 (DE)
Title: Mounting and locking moulded plastic crate for e.g. screen printing - by fixing on matching flat e.g. aluminium@ template which has locking features and centering pin aligned with centre axis of crate
Inventor: FUCHS MARTIN
IPC: B41F15/08
Filed: 1992-03-30
Abstract: An injection moulded plastic crate, particularly one for bottles, is centred, mounted and held in position for further processing; in the process the crate is mounted on a holder with a pin and its top rim is clamped so as to press and hold it against the plate of the mounting. The crate is centred with a pin in or on the part of its centre fixed by its vertical axis, the crate is then held eccentrically about the centre by at least one pin and prevented from turning about its vertical axis. ADVANTAGE - The method and equipment used ensure accurate operations on the crate. No problems is raised by the unavoidable uneven shrinkage of the crate which arises from its shape
Patent DE-4212514-A1 (DE)
Title: Silicon carbide prods. for sintered ceramics prodn. - by electrophoresis of suspension of alpha-silicon carbide in polar aprotic solvent in presence of boron carbide, carbon and dispersant
Inventor: NAS RUEDIGER DIPL CHEM DR
IPC: C04B35/565
Filed: 1992-04-14
Abstract: Producing silicon carbide (SiC) green prods. (I) comprises electrophoresis of a suspension of alpha-SiC particles (II) in a polar aprotic solvent (III) in the presence of finely-divided B4C, finely-divided carbon and an organic polyelectrolyte and/or quat. ammonium base as dispersant (IV). (III) are 1-6C (pref. 1-4C) aliphatic alcohols and/or 3-6C (pref. 3-4C) aliphatic ketones. The suspension contains 5-80 (pref. 20-70) wt.% (II) with mean particle size 2 nm-2 microns, pref. 0.01-1.5 microns. The B4C. has particle size not above 1.5 (pref. not above 1) micron and is present in amts. of 0.1-2 (pref. 0.2-1) wt.%, and the carbon has particle size not above 0.5 (pref. not above 0.1) micron and is present in amts. of 0.5-3 (pref. 1-2) wt.% (w.r.t. II). (IV) is a basic (esp. N-contg.) polyelectrolyte, pref. polyethylene-imine, polyalkanolamine and/or polyvinyl-amine, or a base of formula R4N+OH- (with R=1-6C, pref. 1-4C, alkyl), in amts. of 0.1-2 (pref. 0.5-1.5) wt.% w.r.t. total solids content of suspension. Water is added, pref. in amts. of 0.01-5 (esp. 0.05-2) wt.% w.r.t. total solids. Electrophoresis is carried out at 500-100,000 (esp. 1000-50,000) V/m until a deposit of thickness 0.01-5 (pref. 0.1-3) cm is obtd. USE/ADVANTAGE - For prodn. of sintered prods., esp. ceramic components, pref. by unpressurised sintering (claimed). The process enables a very homogeneous distribution of additives (B4C. and carbon) in the SiC, resulting in a very high sinter density and final prods. with very good mechanical properties and a low fault rate; high rates of prodn. are possible without loss of homogeneity, and the green density can be controlled by varying the water content of the suspension.
Patent DE-4215831-A1 (DE)
Title: Sniper's rifle with telescopic sight and recoil damper - has at least one part of recoil damping mechanism secured to rifle butt
Inventor: MOELLER TILO DIPL ING
IPC: F41G1/38
Filed: 1992-05-13
Abstract: The rifle barrel and breech (10) are coupled to the butt (16), pref. with a check support. The barrel and breech and the butt are coupled in a mutually movable manner. Between the barrel etc. and the butt is fitted a recoil damper (30). The rifle contains a telescopic sight (12, 32) and a trigger, pref. with a trigger guard, as well as a pistol type grip. At least one part of the rifle, which could strike against the user's shoulder and cause damage, is secured on the butt. ADVANTAGE - Comfortable use, increased recoil damping, and prevention of injury, eg by fixed sight eye piece.
Patent DE-4218258-A1 (DE)
Title: Formation of tobacco strand for mass prodn. of cigarettes - involves tapered channel with central rib to mould wrapping band round strand
Inventor: CALVAIRAC ROBERT
IPC: A24C5/18
Filed: 1992-06-03
Abstract: The machine forms a strand of tobacco during the mfr. of cigarettes. The tobacco is brought to the machine by a perforated suction band (3) above a trough (9) and there is a shaping trough for forming the tobacco strand and surrounding it with layers of foil. A forming band (17) and a wrapping band (18) pass over rollers onto the lip of a forming cone (12) which tapers and moulds the foils round the tobacco strand and compresses it. A further forming device (4) closes the top of the groove. There is a central rib (23) in the floor of the forming cone (12). USE/ADVANTAGE - Formation of tobacco strand for mass prodn. of cigarettes.
Patent DE-4222007-A1 (DE)
Title: Telescopic spray cleaning appts. - with separate hydraulic and cleaning fluid supplies, esp. for cleaning high pressure reactor
Inventor: EICHHORN FRIEDRICH
IPC: B01J3/04
Filed: 1992-07-04
Abstract: Appts. for cleaning large vessels, esp. high pressure reactors, consists of a hydraulic telescopic cylinder with a spray head supplied with cleaning liq. through the telescopic cylinder and with a controller for the extended length of the cylinder. The novelty is that (i) the telescope (1) has separate hydraulic fluid and cleaning liq.; (ii) the telescopic cylinder consists of several nested inner tubes (11,12,13,21) held in piston heads (14-16,22) which slide in outer tubes (26-28), the hydraulic fluid being fed via the piston heads (14-16) and the spaces between the outer tubes, while the cleaning liq. passes through the inner tubes (11-13) to the spray head; (iii) a rope is connected to the spray head and can be wound on a drum; and (iv) a speed reducing gear unit is connected to the drum and, with permanent counter-torque, to a control disc carrying cams which cooperate with switches. ADVANTAGE - The design allows river water to be used ass the cleaning liq. and provides a mechanically robust mechanism for spray head position determination.
Patent DE-4222482-A1 (DE)
Title: Automatic tensioning and damping device - is for roller chain drive and has gear with tooth gaps forming enclosed roller bed
Inventor: EBERT SIEGFRIED DIPL ING
IPC: F16H7/08
Filed: 1992-07-09
Abstract: An automatic tensioning and damping element for a continuous chain drive is elastically deformable and is located between the empty and loaded seams. It operates permanently on both seams simultaneously and has an ellipsoid form between a concentric circular ring and a cassinic curve. The dia. is greater than the dia. of the smallest chain wheel. A gear rim has tooth gaps which form a roller bed (1) in the shape of a torus inner segment (2) with either a completely closed surface, or partially closed via bends (3) and with a roller bed angle of less than 150 deg. From the radius of the roller chain to the saddle line of the roller bed, the roller radius is greater by a factor of between 1.15 and 1.35. USE/ADVANTAGE - Automatic roller chain tensioning and damping device allows improved dynamic loading, greater technical reliability.
Patent DE-4224035-A1 (DE)
Title: Ultrasound test method for flaw location - using frequency modulated chirp signal whose instantaneous frequency time characteristic is matched to transfer function of transmission path
Inventor: BERNUS LUDWIG VON DIPL PHYS DR
IPC: G01N29/34
Filed: 1992-07-21
Abstract: The method involves feeding a frequency modulated chirp signal (x(t)) to an ultrasonic transducer (2) arranged in a transmission path. The instantaneous frequency (f) is modulated nonlinearly with time. The time characteristic of the instantaneous frequency of the f.m. chirp signal is matched to the transfer function (H(f)) of the transmission path. The variation with time of the instantaneous frequency is correlated with the corresponding value of the transfer function (H(f)), such that for frequencies (f) with low corresponding values of the transfer function, the rate of change of frequency is smaller than for frequencies with high corresponding values. ADVANTAGE - Optimised range and axial resolution.
Patent DE-4227311-A1 (DE)
Title: Panel for ceiling or side section door - has protruding clamping fold on box profile(s) made of latter sheet metal
Inventor: DOERING ERICH
IPC: E06B3/72
Filed: 1992-08-18
Abstract: The door consists of a row of sequential, mutually hinged panels made of sheet metal strip, coated on either side and several times bent on the longitudinal edges to form a hollow box profile (2,3). At the latter are fastened hinges, or a hinge-like coupling for adjacent panels. At least on one box profile is formed a protruding clamping fold (12,13) of the profile sheet metal as a back-folded double strap under application clamping tension, which is pref. sufficient for the free edge (7) of the profile to abut the outer edge (9) of the adjacent middle panel wall (8) under tension. ADVANTAGE - Panel edge reinforcing without increased cost and assembly hindrance.
Patent DE-4229594-A1 (DE)
Title: Electromagnetic treatment of liquids to modify crystal habits - for prevention of lime scale formation, and in the treatment of bone fractures, etc.
IPC: B01J19/08
Filed: 1992-09-04
Abstract: In the treatment of liquids, partic. water, the liquid is subjected to the fields from two sequential, axially arranged, square-wave excited coils (700,800). A distinct square waveform e.m.f. is applied to each coil, and the square wave potentials are in opposed phase. USE/ADVANTAGE - Reduction of pipe scaling/calcification by modification of crystal habit to produce precipitated solids with tendency to deposit/agglomerate; also denitrification of drinking water, treatment of fuel, and medical treatment of body fluids (in and ex vitro) and bone fractures. Process giving consistent and improved performance in the precipitation of lime, etc. by magnetic treatment, induced by specific combinations of square-waveform emfs.
Patent DE-4230214-A1 (DE)
Title: Gravity filter appts. feeds solid/liquid onto filter belt and scraper - to remove filter cake from belt with filtrate removed below belt and drained away
Inventor: WILKES KURT
IPC: B01D35/16
Filed: 1992-09-09
Abstract: A separator and filtration appts. for the sepn. of a solid from a liq. makes use of gravitational force. The novelty is that the assembly comprises: (a) a filter chamber (2) which holds the solid/liquid mixt. to be filtered; (b) a reversible filter belt with two ends (12) which is permeable for fluid and impermeable for solids, and which forms the lower limit of the chamber (2), the filtrate being collected below the belt and drained away; (c) a scraper assembly (32), which supports the removal of the filter cake with the belt from the chamber (2) and (d) a cleaning assembly (42) for both sides of the filter belt. The ends (12) of the filter belt are secured to a basket roller (18,20). ADVANTAGE - The appts. requires relatively little space and can be built at low cost.
Patent DE-4231509-A1 (DE)
Title: Determining carbon, hydrogen, nitrogen and sulphur content released from an organic sample - by absorbing sulphur di:oxide before carbon di:oxide in heat conductivity detector
Inventor: BOSCHMANN WERNER DR
IPC: B01D53/02
Filed: 1992-09-21
Abstract: In a process and assembly to analyse an organic sample, the sample is broken down by combustion and the products transported first by a steam absorbent and than a CO2 adsorent via a heat conductivity detector. First the nitrogen content is demterined, then the CO2 absorbent is heated to release CO2 for determination in the heat conductivity deteoctr. The steam absorbent is then heated to release steam and steam content is determined in the heat conductivity detector. To create a process which determines the carbon, hydrogen, nitrogen and sulphur content released from the prods. of such a sample, the novelty is that the gaseous combustion products pass through an SO2 absorbent before being passed through the CO2 absorbent, and that after determination of the CO2 content by heating the SO2, absorbent, SO2 is released and passed by the heat conductivity detector (5). USE/ADVANTAGE - To determine the carbon, hydrogen, nitrogen and sulphur content released from an organic sample. The process facilitates the determination of sulphur content, in addition to that of carbon, nitrogen and sulphur.
Patent DE-4234921-A1 (DE)
Inventor: STRUBE KARL-HERMANN DR
IPC: C07K14/815
Filed: 1992-10-16
Abstract: Described is a new anticoagulant protein from land leeches of the genus Haemadipsa, having the N-terminal amino acid sequence: A-Val-Lys-Phe-Cys-Gly-His-Pro-Leu-Ser-Leu-Pro-Thr-Ala-Leu-Cys-Ala, where A represents an indefinite amino acid. This protein can be used in combatting diseases.
Patent DE-4236839-A1 (DE)
Title: Conveyor and separator for sheets of paper to printer feeder - has suction roller conveying overlapping sheets from stack of paper to feed table with side guide and front edge stops
Inventor: HEIDT HEINRICH
IPC: B65H5/36
Filed: 1992-10-31
Abstract: The at least one suction roller (5) is mounted in the paper-conveyor and driven by drive mechanisms (7) so that it is moved to-and-fro by a guide (6) to the machine operating rhythm. The suction roller has suction openings (5a) extending across the sheet widthwise across the direction of travel. At the start of the forward movement, the suction roller is placed against the front sheet in the stack (1) and, at the end of the forward movement, is removed from the sheet. The sheet guide (8) next to the stack top edge is curved in the direction of travel so as to push the next sheet (1b), with its front edge forward, under the sheets (1a) previously lifted from the stack. USE/ADVANTAGE - Continuously and rapidly transfers large quantities of sheets of paper from a store to a printer.
Patent DE-4237915-A1 (DE)
Title: Desalinated offset printing plate washing water - has a defined sodium content
Inventor: WITTE ROLF
IPC: C11D3/10
Filed: 1992-11-10
Abstract: The compsn. of desalinated water contains more than 600 mg/l of sodium and a wetting agent. Pref., the water contains more than 800 mg/l sodium. The desalinated water is a water osmosis water, and is fully desalinated. The water contains a wetting agent at a rate of 2-5 wt.% or 3-4 wt.% using a tenside. The additive contains at least one wetting agent and at least one sodium salt in vol. of 800-1600 wt.% of the sodium. The sodium salt is a NaCl or NaHCO3. The wetting agent contains at least one tenside. USE/ADVANTAGE - The water is for washing offset printing plates with chemically-treated surfaces. The water contains no alcohol, is produced cost effectively, and can contain other conventional additives.
Patent DE-4238192-A1 (DE)
Title: Permeable structure for heat exchanger - consists of channel systems, located above each other in layers, has channels with obstacles
Inventor: GANZ RUDOLF DR
IPC: F28F21/04
Filed: 1992-11-12
Abstract: The structure consists of at least two channel systems (1,2). These are located above each other, in layers, which are separated by at least one card (3). Each system contains channels (4,5) with obstacles (10,11), which project alternately into the channels. The channels open into diagonally opposite connection and distribution channels (6,7,8,9), for even supply. USE/ADVANTAGE - Permeable structure esp. for heat exchangers. Heat exchange is mainly via thin foils. Obstacles improve heat transfer.