baber/WOPTO huggingface dataset:
Patent DE-3920422-A1 (DE)
Title: Mixer for synthetic resin reagents - by feed reagents to tapered screws revolving in equal or opposite directions in tapered chamber
Inventor: WEBER WERNER DR
IPC: B29B7/48
Filed: 1989-06-22
Abstract: Apparatus for mixing synthetic resin reagents has a mixing chamber with inlets for the reagents and an outlet for the mixture produced, and a stirrer in the chamber which has a tapered screw and forms a variable shear gap to the wall of the chamber. This stirrer consists of two meshing screws which revolve in the same or opposite directions and which can be moved together longitudinally. ADVANTAGE - The mixer is efficient even under critical conditions. It is self-cleaning when used for prolonged periods.
Patent DE-3920892-A1 (DE)
Inventor: SADLAUER ALFRED
IPC: F02B67/04
Filed: 1989-06-26
Abstract: An internal combustion engine with unit drive comprises an encapsulated transmission for a unit, detachably arranged on the internal combustion engine with a gear wheel, detachable by means of a pulling device, arranged on the unit shaft. In order to be able to dismantle the unit with as little effort as possible, it is proposed that a through hole in the wall of the transmission casing coaxial with the unit shaft serve for centrical arrangement of the pulling device by means of which the gear wheel in the gear casing is held in position when the unit is dismantled.
Patent DE-3922426-A1 (DE)
Title: Magnetic coupling for rotary process pumps - has isolating bush contacting process medium and other side contacting atmos., and impeller and rotor
Inventor: KLAEUI ERICH
IPC: H02K49/10
Filed: 1989-07-07
Abstract: The impeller rotor (4) rotates in the process meidum (2) and is connected to the impeller shaft (5) and impeller (5') proper. The driving rotor (7) does not rotate in the medium and, on the periphery facing the isolating bush (1'), is equipped with permanent magnets (6). The rotor is provided with an even number of magnet poles (6') facing the isolating bush, which, in pairs, form dipoles in a circumferential and/or axial direction.  The impeller rotor has pole bridges (9) of magnetisable material per dipole of the same distribution as the magnet poles (6') on the driving rotor (7), their pole shoes (10) being directed towards the isolating bush. The pole shoes pick-up the magnetic flux (11) from the magnets: (6) of the driving rotor (7) at one polarity (8), and deflect by the same isolating bush (1') back to the magnets (6) of the driving rotor (7) with the opposing polarity (8). The pole shoes (6', 10) follow the curvature of the intermediate lying isolating bush (1'). ADVANTAGE - Economic and powerful. Over large range is independent of pressure and temp. of process medium.
Patent DE-3922601-A1 (DE)
Title: Low temp. plasma finishing of fabric, fibre, filament or yarn - using batch technique and pref. reactive gas giving uniform result
Inventor: GRUENWALD HEINRICH DR
IPC: B29C59/14
Filed: 1989-07-10
Abstract: Low temp. plasma treatment for finishing fabrics or fibres, filaments and/or yarns used to make these is carried out on a batch, through which a gas is passed during plasma treatment. Treatment is pref. carried out at 5-500, pref. 50-300, esp. 70-200 Pa, esp. first at 5-120, pref. 70-120 Pa and then at 130-250, pref. 130-200Pa. The second treatment is carried out immediately after the first and both may be repeated alternately. The pressure is increased or decreased continuously between the 2 treatment periods, each of which lasts 10-160, pref. 20-60 s; and the total plasma treatment time is 2-30 min. The plasma frequency is 1-20, pref. 13.56, or 27.12, 40.68 and/or 81.36 MHz and power density 2-25, pref. 8-14 W/dm3; or the frequency is 2.45 GHz, pressure 0.1 to 1000, pref. 70-120 Pa and power density 0.1-5, pref. 1.5-3 W.dm3. A reactive gas is used, pref. O2, N2O, CO2, NH3, SO2, SiCl4, CCl4, CF3Cl, CF4 and/or SF6. The batch is produced by winding the fabric, filament or yarn on a perforated (metal) spool and the gas is passed alternately from the outside to the inside and from the inside to the outside of the spool. USE/ADVANTAGE - This technique ensures that treatment is very uniform over the entire length and breadth. It is esp. useful for treating polyesters, polyamides, polypropylene and polyethylene.
Patent DE-3923590-A1 (DE)
Title: Error compensating circuitry for electronic electricity meter - has ohmic resistor and capacitor in series between common pole of changeover switch and phase lead of mains
Inventor: WINDSHEIMER KLAUS DIPL ING
IPC: G01R21/127
Filed: 1989-07-17
Abstract: The electronic switch of the time-division-multiplier used in the electricity meter is in the form of a change-over switch (7) in order to halve the offset voltage of the integrator (8) and eliminate the errors arising from the voltage-dependent resistors of the switching elements. The working contact of the switch (7) couples the electrical mains values to be modulated with the inverting input of the operational amplifier (10) of the integrator. The lazy contact couples the electrical values to appts. earth. An ohmic resistor (5) and capacitor (6) are connected between the change-over switch pole and the phase lead (L) of the mains. The value of the resistor is large compared with the a.c. impedance of the capacitor at mains frequency. USE/ADVANTAGE - Domestic meter. Sufficient compensation for measuring errors arising from various causes.
Patent DE-3925935-A1 (DE)
Title: Cholinesterase determn. in plasma or erythrocyte samples - based on conversion of radio-labelled acetyl-choline in undiluted samples
Inventor: THOMSEN TORBEN DR MED
IPC: C12Q1/46
Filed: 1989-08-03
Abstract: Determn. of cholinesterase activity in undiluted plasma and erythrocyte samples is effected by (a) incubating the sample with (14C-acetyl)choline at 25 deg.C. and pH 7.4; (b) adding EtOH/HOAc to stop the reaction; (c) evaporating off any 14C-acetic acid formed; (d) measuring the difference in radioactivity between the evapd. material and residue; and (e) calculating the cholinesterase activity (in miromole/min.ml) from the radioactivity difference, the specific radioactivity of the (14C-acetyl)choline, the incubation time and the sample vol.. The sample vol. is 0.1 ml. For determn. of butyrylcholinesterase in plasma samples, the substrate concn. is 9.1 mM. For determn. of acetylcholinesterase in erythrocyte samples, the substrate concn. is 3.6 mM. USE/ADVANTAGE - The process is useful for monitoring the therapy of Alzheimer's disease using reversible cholinesterase inhibitors. Errors due to sample dilution are eliminated.
Patent DE-3927949-A1 (DE)
Title: Trigger mechanism for repeater rifle - is designed to enable sear to be replaced by cocking lever
Inventor: WASSMANN HERMANN
IPC: F41A19/17
Filed: 1989-08-24
Abstract: The trigger mechanism is for a repeater rifle.  Actuating the trigger (7) presses its upper inner end against a short lever (5). The mid point of this short lever (5)  abuts against a stop (6) so the trigger action causes this lever (5) to rotate about the stop (6) and actuate the sear holding lever (4) so that the sear is free to rotate and cause the weapon weapon to fire. If required, the sear (2) can be replaced by a cocking lever. The cocking lever is so designed that the length of overlap of the sear holding lever (4) remains the same. USE - Triggers for repeater rifles etc.
Patent DE-3930154-A1 (DE)
Title: Rotary and stationary tool chuck - is held at desired angular position by shoes gripping brake disc
Inventor: HENNEBERG HASSO ING GRAD
IPC: B23Q1/28
Filed: 1989-09-09
Abstract: The chuck accommodates driven rotary or stationary tools in a machine tool as desired, having a rotary spindle in bearings and with a mounting at one end for rotary tools. The spindle is lockable in one or more predetermined angular positions. The locking mechanism consists of a disc brake (7) at the mounting end (5) of the spindle. The disc (6) is clamped in different angular positions by shoes actuated by hydraulic rams. USE/ADVANTAGE - Simple and reliable chuck, there being no load on the spindle bearings when using a stationary tool.
Patent DE-3940992-A1 (DE)
Title: Turbo-supercharger for IC engine - has shut=off valves fitted between pipes supplying exhaust gas to turbine
Inventor: SCHITTLER MICHAEL DIPL ING
IPC: F02B75/02
Filed: 1989-12-12
Abstract: The four-stroke IC engine has a supercharger driven by an exhaust gas turbine (9). The turbine (9) is supplied with exhaust gas by two pipes (5, 8) each of which is connected to several cylinders (3) and (4) or (6) and (7). The two pipes (5.8) are connected to each other by a pipe (12) which is fitted with a shut-off valve (11). This shut-off valve (11) can be adjusted between a fully open position for high engine speed and a closed position for low engine speed. The fitting of this valve eliminates pulsations in the supercharging flow at high speed. USE - Turbo-supercharged IC engines.
Patent DE-4012002-A1 (DE)
Title: Lock with two-parallel sliding bolts - which are actuated by cylinder lock and rack=and=pinion mechanism
Inventor: BOSCHI ADRIANO
IPC: E05B17/04
Filed: 1990-04-12
Abstract: The lock (1) for a door has two bolts (2) each of which forms part of a toothed rack. The bolts (2) slide in parallel guides and are actuated by a common pinion (4) which is mounted on a shaft (5). This shaft (5) carries a second pinion which meshes with thee external teeth of a ring gear. This ring gear also has internal teeth which mesh with a pinion (12) which is mounted on the rotor of a cylinder lock (15). When the key is inserted into the cylinder lock, the lock rotor is rotated and the bolts (2) are actuated through the gear train. USE - Locks for doors in buildings.
Patent DE-4017832-A1 (DE)
Title: Ceramic spacer ring with shaped support faces - in contact with end faces of honeycomb bodies of exhaust catalyst
Inventor: BRESSLER HARALD DIPL ING
IPC: B01D53/86
Filed: 1990-06-02
Abstract: A ceramic ring (31) for spacing the catalytic honeycomb bodies (10,20) of an exhaust gas catalyst, has an outside diameter greater than the honeycomb body diameter and has shaped support faces (41) in contact with the end faces (11,21) of the honeycomb bodies (10,20). Pref. the support faces (41) consist of a material (pref. polyethylene or polypropylene) which combusts at the operating temp. ADVANTAGE - The ring covers little or none of the active honeycomb body surface.
Patent DE-4019399-A1 (DE)
Title: Plug connector for semiconductor circuit modules
Inventor: IGARASHI TAKASHI
IPC: H01R13/115
Filed: 1990-06-18
Abstract: The module has a number of projecting contact pins arranged in pairs (24a,24b). In normal operation the pins are interconnected, but during a testing of the module separate probes may be brought into contact with each pin. The normal connection is established by a pressed metal contact bush (50) that fits over the end. The bush has rolled side sections (52) and a projecting stop (53) that engages the slot between the pins.
Patent DE-4022477-A1 (DE)
Title: Sodium 4-chloro-benzene-sulphinate prodn. for dyestuff mfr. - from chloro-benzene-sulphonyl chloride and alkali sulphite in aq. alkaline medium
Inventor: SCHADE GEROLD DIPL CHEM DR
IPC: C07C313/04
Filed: 1990-07-14
Abstract: In the prodn. of Na 4-chloobenzenesulphinate (I) from 4-chlorobenzenesulphonyl chloride (II) and alkali sulphite (III), (a) (II) is added to an aq. (III) soln. at 0-30degC and pH 6-10, then aq. NaOH soln. (IV) is added so that the pH is 4-8 and the temp. 10-40degC during at least 80% of the reaction; then (b) the pH is increased to 10-12 and the temp. to 50-95degC and 25-100 vol.% water (w.r.t. the reaction mixt.) is added; (c) the solids are filtered off at 70-95degC; and (d) (I) is pptd.  by adding NaCl and cooling below 45degC and isolated. USE/ADVANTAGE - (I) is obtd. in a very pure and uniform form in good yields, although the conditions (rate of addn., temp.  and pH) are controlled less than usual. It is used e.g. in the prodn. of 4-chlororphenyl alkyl sulphones, which are valuable intermediates for the prodn. of dyestuffs. In an example, A soln. of 920 kg NaHSO3 in 3600 1 water was adjusted to pH 8.5 by adding 400 1 50% (IV), then cooled to 12degC. Moist (II) (water content 30 wt.%; 1610 kg 100% (II)) were added in one portion, then 650 1 50% (IV) were added at such a rate that the temp. could be kept in the 25-35degC range by cooling. The pH rose gradually from 5 to 7. Then (IV) was added to pH 11.5 and the mixt. was stirred 30 min at 30-35degC and 30 min at 50degC, with addn. of 300 1 50% (IV) to maintain pH 11-11.5. After adding water to a total vol. of 11000 1, the mixt. was heated to 80degC and filtered. 1500 kg rock salt were added before cooling to 35degC and isolating (I) by filtration.  (I) was obtd. as a wet filter cake (water content 40 wt.%) in an amt. corresp. to 80% yield. It contained 0.3% 4-chlorobenzene-sulphonic acid.
Patent DE-4023412-A1 (DE)
Title: Inductive coupling for electrical energy of signals - uses bandpass filter with periodic short-circuiting of secondary oscillation circuit
Inventor: SIEGWARTH MARTIN DIPL ING
IPC: H04B5/00
Filed: 1990-07-23
Abstract: The inductive coupling comprises a bandpass filter with primary and secondary oscillation circuits (26). The secondary oscillation circuit (6) is periodically short-circuited by a diode switched between its conductive and non-conductive states. Pref. the periodic short-circuiting of the secondary oscillation circuit (6) is effected in the LF range, the HF current in the secondary oscillationm circuit used during the blocking condition of the diode for providing the current supply for the secondary oscillation circuit (6). USE - For supplying electrical energy from primary to secondary unit and feeding signals back from secondary to primary unit, e.g. for window or door glass breaking alarm.
Patent DE-4026599-A1 (DE)
Title: Symmetrical shaped clothes peg, for mounting in two directions - comprises two levers joined through spring
Inventor: FLEISCHER DIETER DIPL ING
IPC: D06F55/02
Filed: 1990-08-23
Abstract: A clothes peg incorporates two levers joined through a spring and features two alternatively acting bearing points between the levers. Depending on the mounting direction of the peg, one of the bearing points serves as a bearing while the other one lifts off and forms the clamping jaws. ADVANTAGE - The peg can be used with ease as does not need to be first turned into the right direction.
Patent DE-4027368-A1 (DE)
Title: Differential gear with driven differential cage -  has cage rotating in differential housing, and has two coaxial axle wheel shafts and compensating wheels
Inventor: FRIELINGSDORF HERBERT DIPL ING
IPC: F16H48/26
Filed: 1990-08-30
Abstract: The differential gear with a driven differential cage (31) rotating in a differential housing (46) has two coaxial axle-shaft wheels (40,41) rotating in the differential support and compensating wheels (42,43) rotating with it in the differential cage (31). The brake is formed by an expander piece consisting of a housing (46) held securely between the axle shaft wheels, with a radially moving piston or plate. USE/ADVANTAGE - The differential gear has a variable degree of lock.)
Patent DE-4031441-A1 (DE)
Inventor: ESCH HANS W
IPC: B01D46/12
Filed: 1990-10-04
Abstract: Filters used for particle separation contain superposed layered, alternately arranged frames (10), between each of which a two-dimensional filter medium (12) is arranged. The filter medium (12) is clamped tight between planar sealing surfaces (11) by clamping elements (24,26). In the frame (10), the filter medium (12) is supported by support struts (14). Since the clamping elements (24,26) are arranged outside the surface of the filter media (12), the filter medium can be exchanged in a simple manner. Such filters can also be designed as cartridge filters. <IMAGE>
Patent DE-4036059-A1 (DE)
Title: Refrigerator with expansion valve - has valve fitted in refrigerant conduit so that expulsion of foreign matter in refrigerant inside valve is excluded
Inventor: ROGGENBUCK VOLKER
IPC: G05D23/12
Filed: 1990-11-13
Abstract: The expansion valve (10) has a housing (14) with first (16) and second (18) connections. Via the first connection flow liq. refrigerant from a liquifier into the valve housing. In the valve housing is a dividing wall (24) with an aperture or nozzle (20) which is closable by a valve needle. From the side opposite to the first connection (16), and in relation to the dividing wall, the second connection (18) emerges from the housing, and via which press re-reduced refrigerant flows to an evaporator. The valve needle (22) is activated by a regulating spring (26), spring force being regulated by a screw (28) and pin unit (30). This pin unit is sealed against the valve housing by a seal (32). A membrane (38) divides a housing (42) into two areas (44, 46) the first of which is connected to a sensor (48) and the other to the evaporator outlet via a connection (61). USE - As an expansion valve for a refrigerator.
Patent DE-4037251-A1 (DE)
Title: Prepn. of optically active alpha-hydroxy:carboxylic and alpha-acetoxy:carboxylic acid - by acylation of racemate of alpha-hydroxy:carboxylic acid with vinyl carboxylate, using lipase in organic solvent
Inventor: JEROMIN GUENTER ERICH PROF DR
IPC: C12P7/42
Filed: 1990-11-23
Abstract: Optically active alpha-hydroxycarboxylic acids or alpha-acetoxycarboxylic acids are prepd. from racemates of alpha-hydroxycarboxylic acids of formula R-(CH2)nC(OH)H - COOH (I) by enantioselective acylation on the alcoholic OH with a vinyl ester of an aliphatic carboxylic acid, using lipases in organic solvent(s). In (I), n = 0-4; R = Ph (opt. substd. in p- and/or m-position), (substd.) cycloalkyl, (substd.) tert.butyl or isopropyl, (substd.) n-alkyl, (substd.) naphthyl or higher condensed aromatic gp., or (substd.) hetero-aromatic gp. The racemate is pref (+/-)-mandelic acid, and enzymatically catalysed acetylation with vinyl acetate gives R-(-)-mandelic acid and S-(+)-O-acetylmandelic acid. Lipase from Pseudomononas fluorescens is used. USE/ADVANTAGE - Good yields are obtd. The optically active alpha-hydroxycarboxylic acids and O-acetyl derivs. are chiral auxiliaries and intermediates.
Patent DE-4037641-A1 (DE)
Inventor: HAINDL HANS DIPL ING DR MED
IPC: A61M25/00
Filed: 1990-11-27
Abstract: A catheter (1, 18) which is essentially rigid in cross-section in the peripheral region and has at least 2 lumina (3, 4, 19, 20) which are mutually separated by a wall (2, 21) which can be expanded and/or deformed in the transverse plane. The flow cross-sections of the lumina changes owing to the deformation of the separating wall (2, 21) depending on the prevailing differential pressure. If medicaments are introduced after one another through the lumina, there is in the lumen used an overpressure in relation to the other lumen or lumina which causes a deformation of the separating wall (2, 21) and hence a reduction in the resistance to flow. Therefore the catheter (24) can be given a smaller cross-section than that of prior art multi-lumen catheters (32, 33, 34), resulting in easier manipulation by the doctor and less risk for the patient.
Patent DE-4038348-A1 (DE)
Title: Bus=bar installation equipment with hooks and distance pieces - selected according to vertical dimension of bus=bar to be held by spring against underside of housing
Inventor: WAGENER HANS
IPC: H02B1/20
Filed: 1990-12-01
Abstract: The bus-bar (40) is gripped by a leaf spring (31') between the hook (20") into which the spring is slotted and the underside of the housing (10). The countersunk screw (30) securing the hook (20") to the housing (10) passes through a distance piece (33) selected from a range corresp. to various thicknesses of bus-bar (40). Alternatively the standard hook and selected distance piece are replaced by a range of unitary devices combining both elements. USE/ADVANTAGE - Bus-bars of different thickness can be secured at uniform spacing with positive contact by easily and quickly assembled arrangement.
Patent DE-4040058-A1 (DE)
Title: Rotary fuel injection appts. for IC engine - generates turbulent flow by controlled rotation of perforated cylinder having same dia. as engine inlet manifold
Inventor: KIM MICHAEL
IPC: F02M35/10
Filed: 1990-12-14
Abstract: The perforated hollow cylinder (a) is rotated within a pressure chamber (c) by an electric motor (b) while fuel is supplied under pressure from a pump (d). In the circular rotary fluid vortex the pressure falls and droplet speed rises while centrifugal force proportional to the square of angular velocity endeavours to drive fuel out of the perforations. The rotational speed is governed pref. by a microprocessor in response to signals from sensors of the relevant engine operation variables. ADVANTAGE - Engine power, efficiency and economy increased by substantially better atomisation and turbulent flow of fuel.
Patent DE-4101086-A1 (DE)
Title: Drilling jig for assembly of pivot windows - consists of flat bar with adjustable end stops to allow for rebate clearance when fixing pivot linkage
Inventor: KOHLER EGON
IPC: B23B47/28
Filed: 1991-01-16
Abstract: The drilling jig allows fixing holes for a pivot linkage to be accurately positioned and drilled in the sides of the frame and casement of a pivot window before the two parts are assembled. It consists of a flat bar which is used one side (22) upwards for the frame and the other side (21) upwards for the casement. Adjustable stops (28) at each end enable the jig to be positioned taking account of the rebate clearance at the top and bottom of the window. On the frame the jig is located by pins (24) in the frame side groove and by end face (25). On the casement it is located by pins (23) and by the foot of the approp. adjusted stop (28). ADVANTAGE - Fixing holes for casement pivot linakge can be accurately drilled before window assembly.
Patent DE-4101162-A1 (DE)
Title: Ring spinning frame - has equipment to twist sliver at start up and during the running of the frame which ensures the sliver does not break during the threading-up process
Inventor: STAHLECKER FRITZ
IPC: D01H1/00
Filed: 1991-01-17
Abstract: A process to start up a spinning unit which is fed by sliver from a card can. The sliver is given twist immediately on leaving the can, by rotating the can as it is being fed to the unit. The appts. is also claimed. Pref., the card cans are mounted on a support above the ring spinning units. The sliver for each unit is fed over the guide into the tube down to the drafting zone. The cans are based on plates with a central pivot and have a belt drive from the frame end motor, so that the sliver is twisted between 2 and 15 turns per metre, to ensure it does not break by the drag from the can. ADVANTAGE - The twist ensures that the sliver does not break during the threading up process, when initial motion is at its greatest
Patent DE-4101842-A1 (DE)
Title: Cartesian coordinate detector comprising interwoven electrodes and insulators - completes circuit by local pressure bringing bare wire into contact with continuous conductive coating
Inventor: SCHRODT HANS-JOACHIM
IPC: G06F3/041
Filed: 1991-01-23
Abstract: Woven tissues (1, 10) are laid on opposite sides of an electrically insulating elastic synthetic foil (5) having a conductive coating (4, 14) on each side. The upper tissue (1) has bare Cu wires (2) extending in the x direction, interwoven with insulating polyester threads (3) in the y direction. In the lower tissue (10) the wires (12) extend in the y direction and the threads (13) in the x direction. In both instances the threads (3, 13) are of larger dia. than the wires (2, 12) so that these contact the coatings (4, 14) only under pressure. ADVANTAGE - Construction is simplified without pressure-sensitive rubber layers.