baber/WOPTO huggingface dataset:
Patent DE-4001821-A1 (DE)
Title: Prepn. of high purity 4,4-bis-(4-aminophenoxy)-di:phenyl:sulphone - by reaction of 4-aminophenol, alkali hydroxide and then 4,4-di:halo:di:phenyl sulphone in set ratios using di:alkylamide solvent
Inventor: BARTMANN MARTIN DR
IPC: C07C315/04
Filed: 1990-01-23
Abstract: Prodn. of improved purity 4,4'-bis-(4-aminophenoxy) -diphenylsulphone (BAPDS) by reaching 4-aminophenol (AP) with an alkali hydroxide (AH) to give an alkaliphenolate which is then reacted with a 4,4'-dihalodiphenylsulphone (DHDS) in an organic solvent at 120-200 deg.C to give a prod. which is pptd. with the aid of a pptn. agent are that (i) 1.0-1.0 (pref. 1.0-1.05) moles of AH are used per mol. of AP; (ii) 2.005-2.05 (2.01-2.04) moles of AP are used per mol. of DHDS; and (iii) the organic solvent is a dialkylamide, pref. N-Me-pyrrolidone.
Patent DE-4004814-A1 (DE)
Title: Drill for rock or concrete or earth - has drilling head consisting of individual points of hard metal soldered into head
Inventor: BOEHM OTTO
IPC: E21B10/62
Filed: 1990-02-16
Abstract: The drill is for rock, concrete or earth. It has a drilling head (1) consisting of individual points (2,3,4,) of hard metal. The points (2,3,4,) have stepped or conical tapered seating surfaces (5) which are soldered in recesses in the drill head (1). The angle of the conical seating is between 40 and 60 deg. USE/ADVANTAGE - In drilling large diameter holes the danger of breakage is diminished.
Patent DE-4007504-A1 (DE)
Title: Textile finishing plant
Inventor: BENZ GOTTLIEB
IPC: D06B21/00
Filed: 1990-03-09
Abstract: Equipment for every aspect of continuous wet or dry finishing process, of the various forms of textile material in a piece length, with devices to transport the material through the process. Pref the installation is set in a frame about 2 x 1 m, with cross members to support a series of vats which have a base provided with heaters. The motor drives a traverse on which is mounted the brackets, so that the unit with drive motor can be located over each vat in turn. This device can pick up the series of rollerss to hold the material for the test, and insert into the respective vat, contg dye, bleach, size, wash water, and so on, as required. The rollers are driven through a chain drive and contact roller, which can be taken off by an angular movement of the brackets.
Patent DE-4011160-A1 (DE)
Inventor: KERTH JUERGEN DR
IPC: C08F4/642
Filed: 1990-04-06
Abstract: Copolymers of propylene with other alk-1-enes, obtainable by polymerising a mixture of propylene and other alk-1-enes from the gas phase in the absence of a liquid reaction medium at a pressure of from 15 to 30 bar, a temperature of from 60 to 90 DEG C and a mean residence time of the polymer of from 1 to 5 hours, with the aid of a Ziegler-Natta catalyst system containing an aluminium component and an electron-donor component in addition to a titanium-containing solid component, the temperature in each case being selected at a sufficiently high level, at the prespecified pressure, so the monomer mixture does not condense in the gas space, and the ratio between the partial pressures of propylene and the other alk-1-enes is from 5:1 to 100:1. The copolymers according to the invention are particularly suitable for the production of films and moulding compositions.
Patent DE-4011415-A1 (DE)
Inventor: DORN WILLI
IPC: H03K3/3565
Filed: 1990-04-09
Abstract: The object of the invention is an input circuit for converting an input voltage into a binary information signal. The circuit initially limits the input current at increasing input voltage to a maximum and, as the input voltage rises, makes it continually smaller. It generates a binary output signal which assumes a binary state when the input voltage exceeds a given threshold (switch-on voltage) and the other binary state when the input voltage falls below this value by a hysteresis quantity. There are two partial circuits, one of which operates the limitation to the maximum and the subsequent drop, while the other forms the binary output signal dependently upon the input voltage.
Patent DE-4012558-A1 (DE)
Title: Providing IC engine air intake resonance - using acoustically stimulated turbulence for generating pressure oscillations
Inventor: SCHLENZ DIETER
IPC: F02B27/00
Filed: 1990-04-20
Abstract: A common air line (2) is coupled via a distribution chamber (3) to radially spaced suction pipes (4). The air jet fed into the distribution chamber from the air line (2) provides acoustically stimulated turbulence at the mouth of each distribution pipe for generating pressure variations within the air intake (1). Pref. the turbulence is obtained periodically via resonance with the reflected pressure wave. Pref an electromagnetic sound generator such as a loudspeaker (9) is used to provide acoustic stimulation, in conjunction with a controller (10) and sound pressure sensor (11). USE/ADVANTAGE - Reduced mechanical complexity to increase cylinder charging.
Patent DE-4014103-A1 (DE)
Inventor: ROVER DANIEL
IPC: H01M50/609
Filed: 1990-05-02
Abstract: The float valve (3) proposed has a housing (10) with a chamber (11) containing a valve-closure body (31). The chamber has an inlet (16) for the liquid with which the container is to be filled and an outlet (17) leading into the container. The valve-closure body (31) is joined to a float by a rod (35, 36, 37) and can move back and forth inside the valve chamber (11) between a position which leaves the inlet (16) and outlet (17) open and a position which closes off the outlet (17). In order to ensure that the valve closes rapidly, even when the pressure of the fluid is low, and to prevent the valve from dripping, the invention proposes that the fluid is fed first into a splitter and, from there, into the valve chamber so that it enters the valve chamber at the floor of the chamber round the whole perimeter of the chamber and flows through the chamber uniformly. The valve-closure body (31) lies in a recess (13) in the floor of the valve chamber (11) and, while filling is in progress, lies substantially out of the flow of the fluid, Not until it is lifted out of the recess (13) by the float is the valve-closure body (31) pressed by the flow of fluid towards the closure position.
Patent DE-4020155-A1 (DE)
Title: Removing internal flaps of veins - involves instrument with shaft consisting of flexible inner and outer tubes
Inventor: STORZ KARL DR MED
IPC: A61B17/22
Filed: 1990-06-25
Abstract: The instrument is used for cutting away the internal flaps of veins. It has a shaft (1) consisting of two flexible tubes (2, 3) which are made of plastics, and which slide one inside the other. The inner tube (3) is connected to the cutting tool on the end nearer to the patient whilst the outer tube (2) is connected, at its end, remote from the patient, to an actuating device (5). The actuating device consists of a piston (7) which operates in a housing (8) and is actuated by an external knob. USE - Surgery.
Patent DE-4020783-A1 (DE)
Title: Fast carry propagation circuit for 5211-coded decimal arithmetic - performs addition and fast propagation of decimal carry signal with minimal gate count
Inventor: MERKLE PAUL
IPC: G06F7/491
Filed: 1990-07-01
Abstract: The circuit takes a 5211-encoded decimal digit (A) and an arithmetic carry signal (x) as inputs, and produces a 5211-encoded decimal digit (B) and a carry output (y). Fast carry propagation is ensured by the direct connection of all input signals to a 4-input AND gate (3), which produces the carry output. The total gate count is increased to 23 if only 2-input gates are used. ADVANTAGE - Can be realised with gate count of eighteen. Performs fast 9+1 carry addition, without additional delay when carry must be propagated to output.
Patent DE-4022530-A1 (DE)
Inventor: EDER ERICH
IPC: B29C45/16
Filed: 1990-07-16
Abstract: The invention relates to a nozzle for injection moulding machines having a common nozzle outlet for the controlled injection of at least two plasticised components into a mould, each component being produced in a separate plasticising unit (13) and each plasticising unit (13) being connected in each case over a short path to at least one separate nozzle inlet (8), which for its part is connected within the nozzle by a separate channel (9, 12), provided with its own independently operable shut-off member (2, 3), to the common nozzle outlet (4), to be precise in such a way that each channel (9, 12) runs from its nozzle inlet (8) via a channel section (9) in a straight line to the associated shut-off member (2, 3) and from the latter in turn via a further channel section (12) in a straight line to the common nozzle outlet (4), an angle ( alpha ,  beta ) of between 140 DEG  and 180 DEG being formed in each case by the longitudinal axis (D) of the outlet region of the connection of plasticising unit (13) and nozzle inlet (8) with the longitudinal axis (C) of the channel section (9) and also by the longitudinal axis (C) of the channel section (9) with the longitudinal axis (B) of the channel section (12) as well as by the longitudinal axis (B) of the channel section (12) with the axis of symmetry (A) of the common nozzle outlet (4). 
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Patent DE-4022985-A1 (DE)
Title: Bone-cement vessel - comprises cartridge coupled to mixing head working under vacuum
IPC: A61F2/00
Filed: 1990-07-19
Abstract: The vessel contg. bone cement comprises a cartridge with bottom and wall. The cartridge forms a mixing chamber (4) for coupling to a mixing head (53) which mixes the cement (1) under vacuum. There can be a coupling on the cartridge for engagement with the head, and it can also have a connecting union to a pressure supply, forcing the cement out of it. This union can be at the opposite end to the coupling engaging with the head. ADVANTAGE - Reduces risk of contamination of cement while mixing and prevents emission of toxic vapour during the operation. @(19pp Dwg.No.8,9,12/30)
Patent DE-4023768-A1 (DE)
Title: Table top of adjustable height - is actuated by endless cable and screwed spindle drive
Inventor: WAIBEL WALTER
IPC: A47B9/10
Filed: 1990-07-26
Abstract: The table, which may serve as an office desk or as a laboratory bench, has a table-top (4) of adjustable height. The table-top (4) is mounted on a beam (8) which is supported at each end on a leg (12,14). Each leg (12,14) can slide vertically in a guide groove in a foot (18) or (20). The table top (4) can be adjusted for height by an endless cable which is attached to each foot (18) and (20) by bolts (50,58). The cable is attached to a nut which is moved horizontally by a screwed spindle driven by an electric motor. This actuating mechanism is mounted on the beam (8) underneath the table top. USE - Desk or laboratory bench with top of adjustable height.
Patent DE-4027003-A1 (DE)
Title: Cover for access hole in chimney wall - is held in place by clamping bar which engages grooves on each side of hole
Inventor: PLEIN HANS RUDOLF
IPC: F23J13/08
Filed: 1990-08-27
Abstract: The chimney, which as walls made of fire-clay, has a rectangular opening in one wall to enable the interior of the chimney to be cleaned. This opening is normally closed with a cover which is held in place by a clamp. A ridge (3) is formed parallel to each vertical edge of the opening and at a short distance from it. The cover (6) is formed from a metal plate with an attached layer of fire-clay (9). The metal plate projects beyond the edges of the fire-clay (9), to form a flange which is fitted with a gasket (8). The cover is fitted so that the fire-clay (9) projects into the opening whilst the gasket (2) lies on the part of the wall which surrounds the oepning. The cover (6) is held in palce by a clamping bar (11) which has each end engaging a groove in one of the ridges (3). USE - Chimneys for buildings.
Patent DE-4028214-A1 (DE)
Title: Converting geographic position data into raster form - using calibration factors generated by relating raster position data to Cartesian coordinate system
Inventor: MUNTANER-RIBAS SEBASTIAN DIPL
IPC: G09B29/00
Filed: 1990-09-06
Abstract: A method of converting geographical position data into raster form related to a Cartesian coordinate system associated with a map displayed on a screen and vice-versa involves realting the fixed raster scale data of the geographical coordinate system to the coordinates of the raster scale for the generation of calibration factors. The calibration factors are used to convert the geographical position data into raster scale coordinates and can be used for the reverse conversion. USE/ADVANTAGE - Developed to enable very accurate conversion of position data bidirectionally between geographical and Cartesian coordinates.
Patent DE-4031861-A1 (DE)
Title: Polarisation component esp. for polarisation microscope - has glass cover plates eliminating effects of adhesive layers
Inventor: BERGNER JOACHIM
IPC: G02B5/30
Filed: 1990-10-08
Abstract: A polarisation component, for producing or modifying linearly, circularly or elliptically polarised light, consists of pref. two plane-parallel wedge-shaped or spherical transparent cover plates, each bonded by a transparent solid or liq. layer to the foil-, plate- or wedge-shaped active polarising element.  At least one of the cover plates (1,5) consists of either (a) a material with a thermal expansion coefficient of between -0.5 and +0.5 x 10 power (-6) m/m.K; (b) a material with an optical strain constant (B) of between -0.7 and +0.7 TPa-1. Pref. material (a) is a SiO2 or TiO2 glass and material (b) is a lead phosphate glass. USE/ADVANTAGE - The component is esp. useful for polarisation microscopes requiring high extinction of the polarisation field. The adhesive layer does not cause double refraction in the component.
Patent DE-4106073-A1 (DE)
Title: Work bench with pivoted double flaps in work top - has rotatable magazine with several different machine heads mounted on base plates for use on various work processes
Inventor: STOLL KURT DIPL ING
IPC: B25H1/00
Filed: 1991-02-27
Abstract: A work bench has a work top (2) below which a number of machine heads (12) are arranged in a kind of magazine rack (10) which revolves to bring one or other of the heads mounted on base plates (19) into line with the bench tops (2). Different machine heads (17) project above the bench (2) ready for use (16) as soon as its associated base plate (19) is brought into line with the bench top (2). Double flaps (34) in the bench top (2) are pivoted (36) to fold back forming a large opening to accept the base plate (19). USE/ADVANTAGE - Reduced space requirement. Rapidly adaptable to different work processes.
Patent DE-4114286-A1 (DE)
Title: Character or symbol illuminated display element for vehicle switch - has slotted outline of symbol formed in panel and filled with light transmitting white material illuminated from below
Inventor: WEBER ADAM
IPC: G09F13/06
Filed: 1991-05-02
Abstract: A character or symbol is formed on a front panel (12) in such a way that it may be illuminated from below by a bulb (14). The character pattern is formed as contoured slots (13) within the main body and has tapered (16) undersides. The slots and underside are filled with a light transmitting, white material that is illuminated by the bulb. The width of the outline slot is related to the surface area of the panel and the angled sections (16) have a 45 degree slope. USE/ADVANTAGE - For indicating function of switch in vehicle. Provides uniform lighting effect.
Patent DE-4114636-A1 (DE)
Title: Contact system for vacuum circuit breaker - has pair of switching members on relatively movable current bolts
Inventor: SLAMECKA ERNST PROF DR TECHN
IPC: H01H33/664
Filed: 1991-04-30
Abstract: A pair of switching contacts (1, 1') are fitted on a current conductive bolts (2), movable axially w.r.t. each other. Coiled bodies, inclined w.r.t. the contact axes, generate a magnetic field and have one end on a support coupled to the current conducting bolt. They are components of a coaxial magnetic field excitation coil. A contact and electrode body is coupled to the coiled bodies on the switching track side. On at least one switching contact the bodies consist of several turn sections (10, 11) such that, on the first turn (10) - inclined w.r.t. the contact axes - the second turn section (11) of smaller incline is coupled. On its front faces the contact and electrode body (13) is fitted. ADVANTAGE - Compact design, high mechanical strength and high magnetic field density.
Patent DE-4115045-A1 (DE)
Title: Direct moulding of at least three-colour plastic shoe soles - by inserting removable, pref. metal, filler pieces and multiple blind lasts into common cavity, in sequence before spraying each colour
IPC: B29D35/08
Filed: 1991-05-08
Abstract: Process for direct moulding of plastic shoe soles in which a filler piece (5) is inserted in the mould cavity, which is closed by a blind last (6) for moulding the first colour material. When the mould is again opened, the filler piece (5) is removed and the mould closed by a second blind last (7) for moulding the second colour material. The second blind last (7) is then removed and the final colour material injected into the space between the last carrying the shoe upper and the now-solidified first and second materials, uniting sole and upper in the usual way. USE/ADVANTAGE - Mfr. of shoe soles with three or more colour. Compared with the usual two-colour process, additional colours may be moulded without use of a separate cavity for each extra colour. This process permits the use of materials of different quality, e.g. hardness, for each colour, so that e.g. the heel region and ball of the foot may have inserts of softer material for improved comfort.
Patent DE-4123098-A1 (DE)
Title: Cigarette smoking machine - has socket with spring-loaded disc to hold multiple cigarettes
Inventor: TRINKIES WOLFGANG DIPL ING
IPC: A24C5/34
Filed: 1991-07-09
Abstract: A cigarette smoking machine has sockets to receive the cigarettes which are to be tested. The socket is in the form of a ring (22) which is fitted in a housing (16). A disc (12) with a central hole is pressed against the inner end face of the cigarette. The pressure on the end face of the cigarette is exerted by the flange (18) of a tubular fitting (17) which is pressed against the cigarette by a compression spring (26) which fits the tubular part of the fitting (17). USE/ADVANTAGE - Cigarette smoking machine. The spring fitting accommodates variations in the length of the part of the cigarette inserted in the socket.
Patent DE-4125575-A1 (DE)
Title: Intrauterine pessary
Inventor: PIENING WOLF-DIETRICH DR MED
IPC: A61F6/14
Filed: 1991-08-02
Abstract: The invention relates to an intrauterine pessary. It is characterised in that a plastic body part (3) with progestogen depot (4) and a copper wire winding (7), and a plastic tail part (5) with a copper wire winding (7) and a monofilament thread (6) are arranged on a hemispherical head (1) of plastic material provided with joint-like, semiflexible guide arms (2) for adaptation. <IMAGE>
Patent DE-4128533-A1 (DE)
Title: Cylinder lock fitted in door - has protruding pins in radial blind holes in core engaging behind annular shoulder
Inventor: LAURENZ LOTHAR
IPC: E05B27/00
Filed: 1991-08-28
Abstract: The cylinder lock has a core (4) with keyhole (18) turning in a cylindrical housing (1) and secured at the rear end so that it cannot be pulled out. Tumblers in the core butt against spring-loaded ones (15) in the housing, in which there is an annular shoulder (20) at the rear end, behind which a protrusion on the core fits. The protrusion is formed by one or more radial locking pins (22), fitting in blind holes (21) in the core. They can be inserted in the holes via a transverse drilling in the housing. USE/ADVANTAGE - No alternation in basic shape of core, or need for different cores in a double-cylinder lock.
Patent DE-4131027-A1 (DE)
Title: Coupling between refrigerator door and external cover panel -  has spacing adjustable by set screw through coaxial holes in bracket and rail
Inventor: PELZER RAFAEL
IPC: F25D23/10
Filed: 1991-09-18
Abstract: The door (8) is pivoted about a vertical axis (4) is covered on its outside with an aesthetic panel (2) e.g. of wood secured by screwes (15) through two angle brackets (1). A levelling screw (13) holes an angled rail (9) firmly to the top of the door.  A set screw (16) driven through holes in the parallel vertical limbs (11,14) of the brackets (1) and rail determines the distance between the door and the panel. ADVANTAGE - The device can be applied either to a fixed coupling or to one where the door and cover are pivoted about parallel axes.
Patent DE-4132766-A1 (DE)
Title: Printing machine drive motor RPM regulation system - has double changeover switch with contacts assigned between RPM detector and current summation point and to current setter
Inventor: KUENZEL MATTHIAS
IPC: H02P7/295
Filed: 1991-10-02
Abstract: The actual speed of the printing machine drive motor provided by a tachogenerator is compared with the required speed at a summation point (9), the difference being supplied to a r.p.m. regulator (10). The latter supplies a required current signal (ISOLL) to a current summation point (13), for comparison with the actual motor current (IIST). The r.p.m. regulator (10) is coupled to the current summation point (13) via one contact (11) of a selection switch (12), the other contact (14) of which allows a current source (16) to be coupled to the summation point (13) instead of the r.p.m. regulator (10). The selection switch (12) is coupled to a control device (21) incorporating a memory storing different switching conditions. ADVANTAGE - Allows safe interlocking of drive gears between successive printing cylinders.
Patent DE-4133991-A1 (DE)
Title: Tyre pressure measuring and indicating appts. - has remote control actuator with activating signal transmitter, with receiver in tyre valve cap
Inventor: ACHTERHOLT RAINER
IPC: B60C23/04
Filed: 1991-10-14
Abstract: The tyre contains a valve cap with a housing closed at one side, while its open end is pressure-tightly screwed onto the tyre valve such that an actuating member opens the tyre valve. The appts. has a pressure sensor and a radio transmitter of a pressure signal. A hand held member, independent of the valve cap, contains a current source, a pressure signal receiving circuit, and a pressure display. The hand held member is formed as a remote control (50) and has an additional transmitter for an activating signal. The valve cap (10) contains a receiver for the activating signal for the pressure sensor and pressure signal transmission assembly after activating signal reception. ADVANTAGE - Simple and comfortable tyre pressure testing with increased precision.
Patent DE-4135418-A1 (DE)
Title: Clamping fixture for fixing plate on carrier plate of processing machine - has bolts to lock plates, springs to maintain connection, and hydraulic piston for release, balls in cage engage grooves in bolt and piston
Inventor: STARK EMIL
IPC: B23Q1/00
Filed: 1991-10-26
Abstract: Locking between the two plates (1, 2) is via bolts (9). The bolts are fastened to the fixing plate, and engage clamping into corresponding holders (40) on the carrier plate. The connection is maintained by springs (19). For release, a hydraulic piston (17) is actuated, which overcomes the force of the springs. A displaceable ball cage (29) has balls (31), which engage on grooves (33, 35) of bolt and piston. Movement of the cage is limited by a pressure plate (14). USE/ADVANTAGE - The device is for removable fastening of workpiece to be processed, on the fixing plate of a machine. Quick release.