baber/WOPTO huggingface dataset:
Patent DE-3941302-A1 (DE)
Title: Removal of fibre thread using compressed air suction device - by operating high and then low air pressure system using three-stage control valve
Inventor: BREMER CARL-HERMANN
IPC: B65H54/88
Filed: 1989-12-14
Abstract: A procedure for the removal of a fibre (thread) by suction using a compressed air operated fibre suction device, whereby a compressed air flow is generated by a compressed air system, the air flow being automatically regulated from a high air flow rate to a constant lower flow rate. The air flow rate is at first switched to a high value by the pressure of the compressed air system and subsequently changed to a lesser continuous flow rate by a timing member. The device comprises a three-stage control valve, which is first switched from a closed position to a position having a high flow rate cross-section and subsequently switched to lower flow rate cross-section by means of a timer, pref. a baffle. The control valve is regulated via a 2-way valve having two switch positions, whereby in a first position a line from the compressed air source is connected to a line communicating with the control valve, whilst isolating the line from the compressed air source in its second switch position, and exhausting the line to the control valve. USE/ADVANTAGE - The device can be used to direct moving fibres (threads) into a suction pistol by suction action. Fibres at greater distances from the suction pistol can be collected without unnecessary energy losses.
Patent DE-3943024-A1 (DE)
Title: Single layer tubular casing comprising mixt. of polyamide-6 - and co-polyamide from hexa:methylene di:amine, terephthalic acid and isophthalic acid, esp. sausage skin
Inventor: STENGER KARL
IPC: B65D65/38
Filed: 1989-12-27
Abstract: A single layer tubular casing, stretch-oriented biaxially and heat-fixed, comprises a mixt. of (a) polyamide 6 and (b) an aromatic copolyamide from hexamethylene diamine, terephthalic acid and isophthalic acid. The mixt. contains 10-90 (10-30) wt.% of the aromatic copolyamide, the rest being polyamide 6. USE/ADVANTAGE - The casing is an artificial sausage skin (claimed). The casing has a natural glass-clear appearance, and adequate elastic recovery (i.e. it adapts to the sausage compsn. after boiling or cooking and cooling). It adheres to the sausage compsn. and prevents the entry of liquids.
Patent DE-4002636-A1 (DE)
Inventor: KOPETZKI ERHARD DR RER NAT
IPC: C12N15/49
Filed: 1990-01-30
Abstract: A fusion protein with at least one antigenic and/or immunogenic determinant from the env, gag and/or pol region of HIV1 and/or HIV2 which contains the tetrapeptide sequence NH2-Met-Tyr-Tyr-Leu as the N-terminal component as well as a process for its production and use.
Patent DE-4002942-A1 (DE)
Title: Mfg. vulcanised rubber with low hysteresis loss - by mixing rubber with carbon black, normal additives and specified cyano-amine(s) at elevated temp. and shear rates of 1-100 per sec.
Inventor: SCHOLL THOMAS DIPL CHEM DR
IPC: C08K5/315
Filed: 1990-02-01
Abstract: Carbon black-filled vulcanised rubber (I) is produced by mixing unvulcanised rubber (II), 10-120 wt.% carbon black (III) (w.r.t. II), 0.05-10 wt.% cyanamine with at least one CN gp. and at least one amine N atom per mol. (IV), and opt. other additives, at temps.  of at least 130 deg.C and shear rate 1-100/sec. Moulded prods. obtd. from (I) are claimed. Pref. amts. are 30-80 wt.% (III) and 0.1-5 wt.% (VI) w.r.t. (II), and temp. is at least 150 deg.C; (IV) has the formula r (NC-R1-NR3-)nR2 (IV) (where R1 = up to 15C (cyclo)aliphatic, araliphatic or aromatic gp., opt. substd. with amino, mono- or di-(1-24C alkyl)-amino, OH, 1-12C alkoxy, COOH, carboxy-(1-12C alkyl), amidocarbonyl, mono- or di-(1-24C alkyl)- amidocarbonyl, Hal, nitro, CN, 6-15C aryl, 7-12C alkylaryl, 1-12C alkylsulphonyl, sulpho or metal-sulphonato; R2 = H or up to 24C n-valent (cyclo)aliphatic, araliphatic or aromatic gp. (opt. substd. as for R1), N-R2-N or piperazine-1,4-diyl; R3 = H or up to 13C (cyclo)aliphatic, araliphatic or aromatic gp., opt. substd. as for R1; n = 1-4). USE/ADVANTAGE - The process gives (I) with reduced hysteresis loss; in prods. such as vehicle tyres, this results in lower rolling resistance and hence a lower fuel consumption.
Patent DE-4006540-A1 (DE)
Inventor: WARWEL SIEGFRIED PROF DR
IPC: C07C67/475
Filed: 1990-03-02
Abstract: B2O3-Re2O7/Al2O3-SiO2 catalysts are used for the metathesis of olefins and functionalised olefins. These catalysts can be further activated by tin-organic compounds. 
<??>This allows an effective synthesis of, above all, unsaturated esters.
Patent DE-4013754-A1 (DE)
Title: Reciprocating engine for IC engine or compressor - has two crankshafts and two connecting rods per cylinder
Inventor: EVERS HEINZ
IPC: F02B75/06
Filed: 1990-04-14
Abstract: The system converts reciprocating to rotary motion.  It may be used in the compressor or IC engine. The central axis (13) of each crankshaft (4) is not coincident with the extension of the piston axis of movement (14), thus  varying the angle created by the upward and downward stroke. The use of two crankshafts (4) and two connecting rods (5) minimises friction when power is transferred between cylinder (1) and piston (2). USE/ADVANTAGE - Reciprocating system for compressor of IC engine improves efficiency without increasing energy consumption and minimises side force on piston.
Patent DE-4018524-A1 (DE)
Title: Piston IC engine with double piston - has second piston which operates in central bore of main piston
Inventor: JEDAMSKI GERHARD
IPC: F02B75/32
Filed: 1990-06-09
Abstract: The i.c. engine has a main piston with an axial bore which receives a second piston. Both pistons are connected by connecting rods to a common crankshaft. The second or inner piston has its connecting rod attached to a crankpin which is at a greater radius than the crankpin of the main piston. The crankpin for the second piston is positioned so that it is at a small angular distance behind the crankpin of the main piston with respect to the direction of rotation of the crankshaft. This double piston arrangement eliminates the stop and bottom dead centre positions of conventional piston engines and machines.
Patent DE-4022048-A1 (DE)
Title: Mechanically driven tool changer - is for horizontal borer and has tool changing head driven by engagement with drive shaft in docking position of spindle
Inventor: ESSER KARL-JOSEF
IPC: B23Q35/10
Filed: 1990-07-11
Abstract: The tool changer head (5) can slide to-and-fro on the spindle housing (3) to allow simultaneous handling of tools into and out of the spindle (3) and tool magazine (63) by the 180 deg. spaced gripper pair (9). The grippers are turned through 180 deg. and the tool changer head reciprocated by a mechanical indexing mechanism which is automatically coupled to a drive shaft on the machine frame when the spindle is brought to the docking position for tool changing. USE/ADVANTAGE - Rapid tool changing cycle. Simple, trouble-free design. Robust construction.
Patent DE-4022652-A1 (DE)
Title: Agricultural machine with two vertical rotors - has blades shaped to prevent interference between rotors
Inventor: EDER WOLFGANG
IPC: A01B33/10
Filed: 1990-07-17
Abstract: The machine for breaking up the soil has two rotors (4) mounted side by side with their axes vertical and driven from a common gear box (1), and rotating in opposite directions. Each rotor has two blades (10) which extend radially in opposite directions. - Each blade (10) has a sharp leading edge (11) and slopes downwards from the rotor hub in the radially outward direction with a turned up blade tip (14). This feature enables the blades of one rotor to pass underneath the hub of the other rotor. The rotations of the rotors are phased so that they do not interfere with each other.
Patent DE-4023166-A1 (DE)
Title: RPM regulator for AC fan motor - has resistance tapping arranged in load circuit and step switching unit contg. rectifiers
Inventor: PLENER HELMUT
IPC: F04D27/02
Filed: 1990-07-20
Abstract: At least one end connection and one resistance tapping are connected to contacts at the step switching unit (S), which has at least one rectifier connected between two contacts and a slider, the slip contacts of which join one or more contacts with each other, depending on the slider position. The step switching unit (S) has a rectifier (D1), which can be connected with one of its connections, to a contact (4), which depending on the slider position, is connected selectively with the contacts (1,2), to a first earth connection (E1) and the tapping (A) of the resistance (R1,R2). The other conection of the rectifier (D1) is connected to a contact (M), which can be connected to one of the motor terminals (U1), or has a rectifier (D2), which with one connection is connected to a contact (5), which can be connected to a contact (2) depending on the slider position, which connects with the tapping (A) of the resistance (R1,R2), and with its other is connected to a contact (1), connected to the supply source (LN). ADVANTAGE - Number of rectifier diodes is reduced. With two diodes, 6 or more switching steps are achieved.
Patent DE-4027065-A1 (DE)
Title: Saturating type permanent magnet erase head - uses two pole magnetic fields with smaller inverted fields
Inventor: YAMASAKI KAZUYA
IPC: G11B5/325
Filed: 1990-08-27
Abstract: North and South magnetic fields (23,24) exit on the tape side of the head with a magnetic gap (27) in-between. An inverted magnetic field (26) exists on the exit side relative to tape direction, next to another magnetic gap (27). Pref. the width of the inverted magnetic field (26) is less than a quarter the width of either of the magnetic fields (23/24). USE - Erasure heads in recording/playback appts.
Patent DE-4029097-A1 (DE)
Title: Self-cooling three=phase dry type transformer -  has core with triangular layout in gas insulated housing
Inventor: KRAEMER AXEL DR ING
IPC: H01F27/32
Filed: 1990-09-13
Abstract: The transformer's magnetic core (2) is constructed with three limbs (3) arranged in a triangle. Each core element has a U shape in side view with outer limbs (7, 8) basically circular in cross-section. The cores are formed from stacks of laminated metal plates. The cores are for primary and secondary windings (6). These are formed on profiled plates with recesses for the coils. The complete assembly is located within a housing filled with an insulating gas. ADVANTAGE - Gas insulated housing provides self cooling effect.
Patent DE-4029135-A1 (DE)
Title: Rotary commutatorless electric motor with partly shielded rotor -  has disc or cylindrical sleeve which screens rotor winding intersected by stator field symmetrically w.r.t. axis
Inventor: SHIRAZI SHARIAR
IPC: H02K31/00
Filed: 1990-09-13
Abstract: The rotor (1) has an annular core with windings (3) in radial slots (8') around its circumference (11). Part of the winding is shielded from the magnetic field of the stator by a circular disc (10) of the same material as the core. The stator core is arranged so taht its field may intersects the rotor windings symmetrically about the axis.  The field may enter the rotor from the axial direction and leave it radially, with stator windings in cascade. ADVANTAGE - DC or dual-voltage operation is possible with high starting torque and power/wt. ratio.
Patent DE-4033422-A1 (DE)
Title: Whirling-disc compressor especially for vehicular air-conditioning - has pivoting device causing disc to move into active position at defined angle w.r.t. zero setting
Inventor: MUSCHELKNAUTZ CLAUDIUS DIPL IN
IPC: F04B27/14
Filed: 1990-10-20
Abstract: The pressure difference between the whirling-disc chamber (17) and coolant intake chamber (21), and hence the piston stroke, can be varied by two magnetic valve units (38,39) which connect the outlet and intake chambers (22,21) respectively to the whirling-disc chamber (17). To reactivate the adjustment after a zero-power setting, a pivoting device (53) moves the disc (28) through a defined angle from its null position at right angles to the shaft (14). This may be achieved using an electromagnet (58), a memory-metal element or hydraulic/pneumatic actuator. ADVANTAGE - Long-term wear on moving parts is reduced, lubrication is guaranteed with available coolants and oils, and no magnetic clutch is required.
Patent DE-4037947-A1 (DE)
Title: Compact fluorescent lamp
Inventor: HOLZER WALTER DR
IPC: H01R33/08
Filed: 1990-11-29
Abstract: The light is emitted from e.g. eight short fluorescent tubes (2) arranged with their axes parallel around a ring, with a tubular housing (4) in its centre for components of the electronic switch unit. Within the ring, four rigid connectors (30) are arranged side by side for contact with resilient conductors (32) soldered to e.g. a printed circuit board (36).  The connectors (30) are slotted (35) for automatic attachment of wires extending from the bases of the fluorescent tubes (2).
Patent DE-4038300-A1 (DE)
Title: High pressure seal between flanges and plates - seals pressures of over thousand atmospheres with groove adjoining plates to hold seal
Inventor: EICKMANN KARL
IPC: F16J15/06
Filed: 1990-12-02
Abstract: The component part has at least two facing surfaces, a pressurised fluid chamber and an interposed seal wherein it is possible to seal against pressures of over 1000 atmospheres. The component can be used as a sealing assembly in a flange connection, a high pressure unit, a pump or on plates. A groove can be provided in one of the two adjoining plates to hold the seal whereby a sealing ring placed in the groove presses against a surface locally raised from one of the plates.
Patent DE-4040430-A1 (DE)
Title: Shortening cocoa-butter extrusion - by measuring data for comparison with stored values
Inventor: HERRICHT ROBERT
IPC: B30B9/04
Filed: 1990-12-18
Abstract: In the pressing of cocoa butter by a hydraulic press, optimum pressure, pressing piston speed are selected to be as close as possible to empirically established curves, proceeding start with parameters of one of these curves. Water and fat content for the material used are stored in a computer. After pressing for 2-4 minutes. Measurements take place of extruder head pressure, amt. of extruded cocoa butter, and the temp. of the material. These results are compared by the computer with stored correlation functions, and the nearest such set of functions is established and used for subsequent pressing controls. ADVANTAGE - Pressing time is reduced to optimum minimum without calling on operator's experience.
Patent DE-4041997-A1 (DE)
Title: Rise and fall station for loading ramps - has runners and support rollers mounted on common axis
Inventor: GOTTSTEIN NORBERT DIPL ING
IPC: B65G13/12
Filed: 1990-12-27
Abstract: The raising and lowering station with movable runners and support rollers for platforms has several run-up ramps (20) mounted in at least two rows next to each other whereby the runners (23) and support rollers (25) via which the platforms (5) are moved and mounted on a common axis (24) lying at right angles to the conveyor direction and are connected drive-wise in the conveyor direction to motors (17,35). The rollers are displaceable in the direction of the rising surfaces (21) by rods (13,14) and gear rods. The rising surfaces (21) can be formed from flat sections attached to the side plates of the run-up ramp (20). ADVANTAGE - The platform moving over the row of ramps is supported in several places and can thus be lightweight allowing a lower structural height.
Patent DE-4100777-A1 (DE)
Inventor: PUZYREWSKI ROMUALD PROF DR
IPC: F01D1/00
Filed: 1991-01-12
Abstract: In a single-flow steam turbine, the inlet casing is designed to comprise two intertwined spiral casings (1, 2). These spirals have concentrically arranged annular openings (1',2') which face the inlet to the blading and extend over 360 DEG  of the circumference. The spirals can be shut off and/or throttled, allowing infinitely variable partial admission to the reaction admission (sic) (13, 14, 15). The spirals (2) dimensioned for the smaller flow and their annular opening (2') is arranged on the rotor side in the radial direction. The first row of blading supplied from the annular openings (1', 2') is an after the (sic) action control wheel (13). The radially inner boundary wall of the spiral dimensioned for the small flow is arranged in the plane of the balance piston.
Patent DE-4106225-A1 (DE)
Title: Microwave-type moisture sensor - esp. for testing aggregate used in building industry
Inventor: GOELLER ARNDT DIPL ING
IPC: G01N22/04
Filed: 1991-02-23
Abstract: A sensor for on-line determn. of the moisture content of coarse and fine particulate bulk material or fine particulate bulk material contg. coarse particles, esp. aggregates for the building industry, consists of a conductive baseplate, over which a microwave measurement track is passed. The novelty is that the measurement track is a conductor or free space track with large dimensions w.r.t. the particle size of the material being tested. ADVANTAGE - The sensor is mechanically stable, provides accurate measurements, allows automatic process control and does not require sampling or a particular arrangement of the material being tested.
Patent DE-4109010-A1 (DE)
Title: Equipment for extinguishing burning oil-wells - by surrounding burning area with material that prevents or restricts entry of air
Inventor: MICKENBECKER PETER
IPC: E21B33/02
Filed: 1991-03-19
Abstract: This is a method, with associated equipment, for extinguishing burning oil-wells by surrounding the burning areas with a material that prevents or restricts the entry of air. Variants claimed provide for many alternative types of materials to be used, including flexible materials, textiles, inherently-stable materials, and double-walled materials. A number of different arrangements for the shape, support, erection, and suspension (for transport or operation) are claimed, e.g. as a bell, pyramid, cone or chimney hanging from an aircraft, captive balloon, remotely-controlled helicopter, or crane. USE/ADVANTAGE - The method offers  a means of extinguishing oil-well fires quickly, without high equipment-costs, and without excessive danger or  destruction.
Patent DE-4111343-A1 (DE)
Title: Heating wash water for vehicle screen wipers - using circuit which routes water via engine exhaust heat exchanger
Inventor: HORN MARTIN
IPC: F02G5/02
Filed: 1991-04-08
Abstract: The system heats the wash water for the screen wipers of a vehicle. A feed pipe (5) with a thermostatic valve (8) runs from the wash water container (1) to a heat exchanger (7) which is positioned in front of the exhaust gas mainfold (12) of an IC engine (II). The washer water is heated by the exhaust heat from the IC engine and then flows via a return pipe (10) back to the wash water container. USE/ADVANTAGE - Simple system for the rapid thawing out of frozen fluid in the container.
Patent DE-4115534-A1 (DE)
Title: Opto-electronic appts. for measuring structure edges, e.g. for image evaluation - has opto-electronic receiving surfaces as electrodes with circle-annulus structure forming input and reference capacitances for amplifier
Inventor: AHLERS HORST DR
IPC: G01J9/02
Filed: 1991-05-13
Abstract: The optoelectronic appts. for measuring structure edges includes optoelectronic receiving surfaces of circular-annular structure. The receiver surface with its circular-annular electrodes is in the form of a semiconductor photo-capacitance. The capacitances are connected as clocked input and clocked reference capacitances (Ce,Cref) to the inputs of a charge-balanced voltage-to-frequency converter which derives the measurement result from its illumination-dependent charges. USE/ADVANTAGE - E.g. for use in image evaluation; enables structure edges to be measured with resolution in nanometre range.
Patent DE-4121855-A1 (DE)
Title: Bicycle lamp using LEDs - controls number of diodes connected in series according to detected dynamo voltage
Inventor: GEYER DIETER DIPL ING
IPC: B62J6/04
Filed: 1991-07-02
Abstract: The bicycle lamp has a pair of terminals (11, 12) coupled to a dynamo between which LEDs (LED 1 to LED 3) are connected in series. A detector circuit (14) monitors the dynamo voltage (UD) between the terminals to provide a control signal dependent on the voltage range within which the dynamo voltage lies and determine the number of LED's switched in series via a control circuit (16) using corresp. switching transistors (T1...T3). Pref., three LED's are used, the detector circuit comprising two voltage detectors (15), each with an input and output and using an internal reference voltage. ADVANTAGE - Provides light output level matched to dynamo voltage.
Patent DE-4124148-A1 (DE)
Title: Attachment for ladder to tiled pitched roof. - uses metal hook insert located between tile courses and fixed to plate secured to roof rafter.
Inventor: GIELISSEN HANS
IPC: E04D13/12
Filed: 1991-07-20
Abstract: A holding plate (8) is fixed to one or more roof rafters (9). A shaped section (22) which lies between two courses of tiles (5,6) is connected to this plate. The lower end (21) of this shaped section is hooked to hold and secure the rung of a ladder. The upper end (22b)of the shaped metal section lies under the holding plate (8) and there is a cranked section (22a) which passes through a hole in the holding plate. This plate lies on top of the rafters but underneath the purlins (2,3,4). USE/ADVANTAGE - Secure fixing for roof ladder on pitch roof with flat tiles.
Patent DE-4125099-A1 (DE)
Title: Measurement of ammonia in air and in gases contg. nitrogen oxide(s) - by splitting gas stream in two, oxidising ammonia in one half and measuring differential nitrogen oxide(s)
Inventor: BONSELS WILLY
IPC: B01D53/34
Filed: 1991-07-30
Abstract: A process and device are disclosed for measuring ammonia in air and in NOX-contg. offgases or exhaust gases. The gas is divided into two partial streams which are processed so that they differ from each other by a nitrogen oxide concn. corresp. to the ammonia concn. The ammonia concn. is determined from the difference in nitrogen oxide concn. between the two streams. The device comprises a line (1) for the gas being measured, divided into two parallel channels, each with a valve (4,5). There is an ammonia filter (7) in one channel, both channels run into a line (10) leading to an ammonia converter (11) for the conversion of ammonia into nitrogen oxide. A nitrogen oxide sensor (13) is disposed downstream of the ammonia converter, and is connected to a memory device (16) and subtraction arrangement (17). USE/ADVANTAGE - The method can be used to measure ammonia and nitrogen oxide concns. in the off- or exhaust gases from fixed or mobile installations. Ammonia can be selectively determined in the presence of NO and NO2, with a rapid response time.
Patent DE-4128079-A1 (DE)
Title: Polyarylene sulphide with less flash prodn., high UV resistance etc. - contains polyarylene sulphide, novolak obtd. by acid-catalysed condensn. of phenol(s) and nitro-aryl-keto cpds., and opt. reinforcing agent or filler
Inventor: KOEHLER BURKHARD DIPL CHEM DR
IPC: C08J3/20
Filed: 1991-08-23
Abstract: Mixts. (I) are claimed, contg. (A) 99.8-70 wt. % polyarylene sulphide (PAS), (B) 0.2-30 wt. % novolak-type condensate obtd. by acid-catalysed condensn. of phenolic components (B1) with nitroaryl-keto cpds. (B2), and (C) 0-400 wt. % reinforcing agent or filler (w.r.t. A+B). Pref., (I) contain 99.5-95 wt. % PAS, 0.5-5 wt. % (B) and 0-300 wt. % chopped coated glass fibre, ballotini or other mineral fillers etc.; (B) is prepd. by condensn. of m-nitrobenzaldehyde with 1-2 mols. phenol (or other substd. phenol, naphthol, Bisphenol A etc.) at 70-180 deg. C and 0.001-1 bar in the presence of 0.1-10 wt. % catalyst (HCl, p-toluenesulphonic acid etc.), with distn. of reaction water. USE/ADVANTAGE - (I) are useful for the prodn. of moulded prods. (claimed). The invention provides PAS-based moulding materials (I) with good mechanical properties, UV resistance and flow properties, and with a reduced tendency to flash prodn. on injection mouldi