baber/WOPTO huggingface dataset:
Patent DE-3227108-A1 (DE)
Title: Process for the preparation of pivalolactone
Inventor: SCHILLING BERND DIPL CHEM DR
IPC: C07D305/12
Filed: 1982-07-20
Abstract: The invention relates to a process for the preparation of pivalolactone by reacting dimethyl ketene and formaldehyde in the presence of Lewis acid, iodine being added as co-catalyst.
Patent DE-3234200-A1 (DE)
Title: Electrostatic filter with double electrode
Inventor: BRAUN FRANZ
IPC: B03C3/41
Filed: 1982-09-15
Abstract: Electrostatic filter (electrostatic precipitator) for precipitating solid and liquid particles, having a cylindrical outer electrode, which at the same time forms the casing, and a bipartite inner electrode consisting of a needle-shaped and a cylindrical part. Said cylinder may at the same time form the casing for the high-voltage generator. Directly disposed on one end of the outer electrode there is the conveying device for the medium to be cleaned. <IMAGE>
Patent DE-3235229-A1 (DE)
Title: Double mount for roller-shutter spindles or shafts which run at an angle to one another
Inventor: BOHNERT REINHARD
IPC: E06B9/174
Filed: 1982-09-23
Abstract: The invention relates to a double mount for spindles or shafts of roller shutters which run at an angle to one another and which are actuated simultaneously, preferably on windows or doors in angled front sections or in bays of buildings, which consist essentially of a ball bearing arranged in a mount, which is characterised in that there is arranged at both sides in the inner, movable part of the ball bearing (29) a respective universal or Cardan joint (30) whose freely movable part (31, 32) accommodates at least one end of the respective roll spindle or shaft (5, 6, 14, 15, 16, 33, 34). <IMAGE>
Patent DE-3240975-A1 (DE)
Title: Phenylbenzoylureas and -thioureas
Inventor: BOEGER MANFRED
IPC: C07D213/64
Filed: 1982-11-05
Abstract: Novel halogen-substituted N-(4-trifluoromethylpyridyl-2-oxy)phenyl- N'-benzoylureas of the formula <IMAGE> in which R1 and R2 independently of one another denote hydrogen, methyl, fluorine, chlorine or bromine; R3 denotes methyl, fluorine, chlorine or bromine; R4 denotes hydrogen, fluorine, chlorine, bromine, methoxy or ethoxy; X denotes oxygen or sulphur; and n denotes a number 0, 1 or 2, a process for the preparation of this compound and compositions containing it for use in pest control, in particular for the control of insects which attack plants and animals. The novel compounds are particularly active against larval stages of plant-eating and plant-injurious insects.
Patent DE-3241687-A1 (DE)
Title: Arrangement for temperature compensation of waveguide-oscillator circuits
Inventor: SOLBACH KLAUS DR ING
IPC: H03L1/02
Filed: 1982-11-11
Abstract: A cylindrical dielectric rod crosses the waveguide at a point which determines the frequency and acts as a capacitive element. The rod consists of parts having approximately the same dielectric constant but having different temperature coefficients. The resultant temperature coefficient acting in the waveguide is continuously variable by displacing the rod in its axial direction.
Patent DE-3248213-A1 (DE)
Inventor: SHIONO FUSAHIRO
IPC: G10L19/00
Filed: 1982-12-27
Abstract: An electronic cash register system includes an input keyboard and a high-speed computer which outputs through a buffer to a low-speed speech synthesizer. To avoid loss of data due to buffer overfill, a speech condition determination unit generates a control signal if the empty-condition of the buffer falls below a threshold. In one embodiment the control signal speeds up the speech synthesizer clock. In a second embodiment the keyboard is disabled.
Patent DE-3301870-A1 (DE)
Title: Process for the preparation of concentrated liquid dye preparations
Inventor: KOLL JOCHEN
IPC: C09B67/46
Filed: 1983-01-21
Abstract: The process is characterised in that aqueous suspensions or dispersions of organic dyestuffs, organic pigments or optical brighteners are conducted under pressure one or more times through a microporous membrane which allows the passage of water and substances dissolved therein, and the retentate is then optionally further concentrated.
Patent DE-3304792-A1 (DE)
Title: Tooth protector for treating the throat region of the human body
Inventor: PAU HANS-WILHELM DR MED
IPC: A61B90/00
Filed: 1983-02-11
Abstract: The tooth protector for treating the human body is especially suitable for direct adjustment of the larynx. It comprises an evacuatable hollow body (1), bent in the shape of an arc, which can be placed onto the front and eye teeth (3) in the upper jaw (4), the hollow body being designed in the lower part as a shell (5) and having an upper cover (10) made of a stretchable, film-like material. The hollow body (1) is loosely filled with a granular filling material (2) and has a connection (12) for evacuation purposes; it is placed onto the upper front teeth of the patient and is then evacuated, so that the upper cover fits closely against the teeth and the alveolar ridge of the patient, and the filling material represents a dimensionally stable support between the shell (5) and the upper jaw of the patient. <IMAGE>
Patent DE-3309840-A1 (DE)
Title: Adjustable propellor
Inventor: MUEHLBAUER GERD RUEDIGER
IPC: B64C11/40
Filed: 1983-03-18
Abstract: An adjustable propellor for an aircraft, having an electronic device (10) for continuously-variable control of the propellor blade angle by means of an electrical controller (7), so that the propellor (1) always exhibits a constant rotation speed. <IMAGE>
Patent DE-3313635-A1 (DE)
Title: Process for removal by suction of sludge liquor or the like and apparatus for carrying out the same
Inventor: KOSAK GEORG ING GRAD
IPC: E03F7/10
Filed: 1983-04-15
Abstract: In a process for the removal by suction of sludge liquor or the like using a vacuum cesspool cleaner, in particular a combined high pressure sewer cleaning vehicle, a flocculating agent initially in the form of a concentrate is added to the sludge liquor removed by suction for coagulation and precipitation of the solid fraction of the sludge liquor and the mixture is then filtered. In this case, at least one mixing vessel (10, 11) is also carried and a working solution is mixed batchwise on site depending on the particular requirement in the form of concentrates diluted with water. This working solution is then added to the sludge liquor. Two mixing vessels are expediently available, each of which has a concentrate feedline (12), a utility water feedline (13) and a feedline (17) to the sludge liquor line (7) for the finished working solution. The mixing vessels (10, 11) have a compressed air connection (37, 38) in the base region and a venting line (15, 16) in the upper region, in such a manner that the concentrate can be intimately mixed with filter water by compressed air passed into the mixing vessels (10, 11) from the vehicle's own compressed air unit. <IMAGE>
Patent DE-3314068-A1 (DE)
Title: Device for tempering and circulating pumpable substances
Inventor: HUCKE HANS
IPC: F24D3/02
Filed: 1983-04-19
Abstract: In a device for tempering pumpable substances in a circulation system, comprising a temperer (1, 15) which serves to heat and/or cool the substance, from which a discharge line (2), leading to a load (5), for the tempered substance emerges, and in which a feed line (3), coming from the load (5) for the substance to be tempered ends, a circulating pump (4) for circulating the substance being provided in the feed line (3) and, moreover, it being the case that there branches off from the feed line (3) - seen in the direction (A) of circulation of the substance - in front of the circulating pump (4) a branch line (7) which leads via a reservoir (6) that is situated lower than the load (5) and has an exhaust gas opening (6a) and then likewise ends once again in the feed line (3) upstream of the circulating pump (4), the aim is to generate the pressures which are to be appropriately assigned to the respective physical characteristics of the circulating substance and to hold said pressures at prescribed values, for which reason the branch line section (7a) coming from the reservoir (6) and ending in the feed line (3) is assigned a pressure-generating device (8). <IMAGE>
Patent DE-3314261-A1 (DE)
Title: Analog-digital converter arrangement
Inventor: HORBELT MICHAEL DIPL ING
IPC: H03M1/00
Filed: 1983-04-20
Abstract: A switching device (17) and a control device (31) with an evaluating circuit (33) are connected to the analog-digital converter (11). At predetermined times, the analog input signal is switched off and instead, a plurality of reference signals are connected. The output signals of the A/D converter, produced by the reference signals, are checked and, if necessary, the A/D converter is supplied with a correction function in the subsequent measuring period. Using this arrangement, time-related and temperature-dependent fault influences, in particular, can be eliminated. <IMAGE>
Patent DE-3315040-A1 (DE)
Title: Process for charging arc melting furnaces, and charging apparatus for carrying out the process
Inventor: STRUNCK FRITZ-JUERGEN DIPL ING
IPC: F27D11/08
Filed: 1983-04-26
Abstract: The invention is constituted by a process and a charging apparatus for arc melting furnaces, which make it possible to protect those wall regions which are particularly stressed by thermal radiation within the arc melting furnace, the additives being fed into the arc melting furnace, according to the process, separately from the remaining charging material, and specifically at those wall regions within the melting furnace which are nearest the electrodes. Correspondingly, the interior of the charging apparatus is equipped with at least two chambers, each with an upper opening for filling it and with a lower, closable opening for emptying it. <IMAGE>
Patent DE-3315263-A1 (DE)
Title: Process for producing sulphuric acid
Inventor: CECHOV OLEG SINANOVIC
IPC: C01B17/76
Filed: 1983-04-27
Abstract: The process according to the invention for producing sulphuric acid under elevated pressure provides for combustion of the sulphur in a stream of predried compressed air to give sulphur dioxide, the catalytic oxidation of the latter to give sulphur trioxide, the absorption of the sulphur trioxide, giving the sulphuric acid, and blowing off the sulphur dioxide dissolved in the latter. According to the invention, the sulphur dioxide is blown off with compressed non-dried air in two stages, namely by subjecting, in the first stage, sulphuric acid having a concentration from 94 to 96 % by weight to blowing off down to a content of sulphur dioxide of 120 to 350 g per 1 tonne of said acid and, in the second stage, blowing off the resulting sulphuric acid having a concentration from 92.5 to 94 % by weight down to a content of sulphur dioxide of 15 to 35 g per 1 tonne of said acid.
Patent DE-3317351-A1 (DE)
Title: Device for ventilating and conditioning a room
Inventor: STUEBER HORST W
IPC: F24F8/158
Filed: 1983-05-09
Abstract: To improve living and working conditions in closed rooms, dust-free fresh air containing oxygen is supplied to the room, and can be preheated in cooler or colder seasons according to requirements and produces an air circulation. The degree of saturation of the dust filter is read off a differential pressure measuring device and thus makes constant air outputs possible.
Patent DE-3322121-A1 (DE)
Title: Two-stroke internal combustion engine
Inventor: ANCHETA ANTONIO
IPC: F02B33/34
Filed: 1983-06-20
Abstract: A two-stroke engine contains an inlet and scavenging valve in the cylinder head together with a fuel injection system, a circulating pressurised lubrication system and a fan or a turbocharger which supports air charging of the cylinder and scavenging of the exhaust gases. The piston head is dome-shaped, one side being curved downwards onto the outlet slot, which is led through the wall of the cylinder above the bottom dead centre position of the piston head. The outlet slot is inclined outwards and downwards, largely following the inclination of the piston, in order to ease the flow of exhaust gases through there aided by the scavenging air, which enters through the inlet and scavenging valve. The valve is actuated by a cam, which is fitted on a camshaft on the cylinder head, which shaft is in turn connected to the crank shaft. The size of the cam is selected in such a way that the opening, closing and the opening duration of the valve is controlled, the valve being opened over about 140 DEG  and the piston controlling the opening of the outlet slot over about 130 DEG , so that there is an overlap of about 5 DEG  at each end of the opening of the outlet slot. It is worth noting that the oil scraper ring always remains below the outlet slot, in order to prevent lubricating oil from being able to escape through the outlet slot.
Patent DE-3326327-A1 (DE)
Title: Safety switch-off device for carriages with their own drive
Inventor: SCHNEIDER HERBERT
IPC: B61B13/00
Filed: 1983-07-21
Abstract: Rail-guided carriage with a switch-off buffer which is attached to its end side and switches off the drive of the carriage when an obstacle is touched. The switch-off buffer (1) can be displaced in a guide (4) towards the carriage and can be swivelled together with the guide about an axis of rotation which is parallel to the transverse axis of the carriage. A pretensioning device (8) acts on the guide about its axis of rotation so that the switch-off buffer rests on the travel rail. By virtue of the swivelability and pretensioning of the switch-off buffer, the latter also rests on the travel rail in the curve of said rail. The displaceable guide of the switch-off buffer ensures that the carriage can be braked gently when running up against an obstacle. <IMAGE>
Patent DE-3326820-A1 (DE)
Title: Device for machining bore edges
Inventor: GEYER ALEXANDER
IPC: B23B51/10
Filed: 1983-07-26
Abstract: The invention relates to a device for machining bore edges, inaccessible from outside, in workpieces by means of a countersinking tool having a cutting edge and sitting on a drive shank. The object of the invention is to create a device which enables bore edges to be machined in a simple and efficient manner even if such edges are at locations of the workpiece where access is difficult from outside, e.g. in blind spaces of workpieces. This object is achieved according to the invention by the drive shank of the countersinking tool being made in such a way that it permits an elastic deflection transversely to the drive axis, and by a deflection device being provided which acts during axial adjustment of the countersinking tool, produces the elastic deflection of the drive shank and as a result moves the cutting edge of the countersinking tool up to the bore edge to be machined. <IMAGE>
Patent DE-3329468-A1 (DE)
Title: Thread-cutting tool with guide
Inventor: VOELKEL KLAUS PETER
IPC: B23G5/04
Filed: 1983-08-16
Abstract: The subject matter of the invention is a thread-cutting tool for cutting external threads. The thread-cutting tool contains a die holder (1) with an interchangeable die (2) and an interchangeable guide (3). The section (5) of the guide (3) bearing against the workpiece and the die (2) are at a given distance from one another. In the area of the guide section (5), the guide (3) is provided with openings (6) for discharging the chips. <IMAGE>
Patent DE-3330444-A1 (DE)
Title: Use of potassium nitrate in a composition for treating the tissue of the gum and of the periodontium
Inventor: HODOSH MILTON
IPC: A61K33/00
Filed: 1983-08-20
Abstract: Potassium nitrate is present in the composition in an amount which is between 1% by weight and saturation, preferably about 5% by weight. Use is possible in the form of an aqueous solution or of a non-toxic paste.
Patent DE-3330970-A1 (DE)
Title: Jacking-up device
Inventor: REDDAWAY ANTHONY LEWIS
IPC: E04G23/06
Filed: 1983-08-27
Abstract: The invention relates to a jacking-up device having two blocks which are arranged one above the other and between which a wedge is arranged. The outer faces of the two blocks run parallel to one another, whereas preferably both inner faces of the blocks are inclined relative to the outer faces. The wedge has converging faces which are in sliding contact with the adjoining inner faces of the blocks. Lateral flanges on the blocks maintain a flush alignment of the wedge and the blocks in the movement direction of the wedge. A clamping bolt with a head engages in an opening of the wedge starting from the thin end of the wedge thereinto, and cooperates with an internal thread on the wedge or with a nut. A washer between the head of the clamping bolt and one end face of each of the blocks ensures the alignment between the blocks in the direction of the movement of the wedge.
Patent DE-3332707-A1 (DE)
Title: Internal combustion engine
Inventor: DENSCH DIETRICH DIPL ING
IPC: F01C1/08
Filed: 1983-09-10
Abstract: The invention relates to an internal combustion engine with two or more meshing rotors axially parallel and rotating in opposite directions which are closely surrounded by a housing and which, with the housing, form at least one combustion chamber, supplied by a compressor with compressed air or a fuel/air mixture, and expansion spaces which start from the said combustion chamber, widen in steps, are sealed off relative to one another and, during rotation of the rotors, move away in the axial direction from the ignition location, the side walls of the screw flights, which are designed with an increasing pitch, being constructed in the form of a spiral staircase, and the rotors having the same cross-section in each common cross-sectional plane with in each case one engagement segment which extends over 180 DEG  and has concave epicycloidal end sections, of which successive end sections of each rotor are offset relative to one another to such an extent that no overlap gap occurs.   <IMAGE>
Patent DE-3333528-A1 (DE)
Title: Monomode fibre and method of producing it
Inventor: DOUKLIAS NIKOLAOS DR
IPC: C03B37/028
Filed: 1983-09-16
Abstract: A monomode fibre for optical communications is described, in which a sheath (1) with a predetermined outer sheath diameter (D) which corresponds to the fibre diameter closely surrounds a bundle (2) composed of a plurality of respectively thin sheathed monomode cores (20), at least the thin sheath (21) of each monomode core (20) having a refractive index that is smaller relative thereto. <IMAGE>
Patent DE-3338401-A1 (DE)
Title: Dental impression tray
Inventor: SCHUTZBACH HENRI DR MED
IPC: A61C9/00
Filed: 1983-10-21
Abstract: A fixation plate (1) is provided with two passage slits (5, 6) extending transversely relative to one another, into which two buccal segments (7, 8), on the one hand, and one labial segment (9), on the other hand, can be pushed and fixed with screws. The three segments (7, 8, 9) can thus be adapted to suit the shape and size of the cleft jaw. Since all the components of the impression tray are made from stainless steel the tray can be sterilised. <IMAGE>
Patent DE-3342021-A1 (DE)
Title: Chaton setting
Inventor: BOCK JUERGEN
IPC: A44C17/04
Filed: 1983-11-22
Abstract: The invention relates to a chaton setting for setting gems with a pointed lower part, in which setting the gem rests against the base of the setting. In the known chaton settings, the base of the setting is formed by a machine-turned cone which is intended to correspond to the cone of the pointed lower part of the gem. However, if this is not the case in unevenly ground gems, individual reprocessing of the chaton setting is necessary in each case. In order to remove this disadvantage and to be able to set gems of this type in such chaton settings by machine, it is proposed according to the invention that the base of the setting is formed by a tube which is matched to the cross-section of the lower part of the gem, is constructed to be resilient at least on the free end side and can adapt, when the gem is pressed in, to the lower part of the gem, even if it is of uneven shape, and can thus allow satisfactory insertion of the gem in the setting. <IMAGE>
Patent DE-3401297-A1 (DE)
Inventor: WIDMANN WERNER ING GRAD
IPC: H01H1/56
Filed: 1984-01-16
Abstract: 1. Selector switch for tapped transformers for switching over from one tapping to the next, having fixed contacts (1) arranged on a circle and connected to the tappings, and having switching contacts (3, 4, 5) for three branch circuits on a common contact carrier, which switching contacts can be rotated at the same time on the circle and are represented by rollers, whereby : all the switching contacts (3, 4, 5) carry in their resting position the potential in each case of the same step contact (1), when the contact carrier is rotated, the switching contacts (3, 4, 5) loaded with spring force (12, 14) are moved, with regard to the contact carrier, essentially only in the radial direction, and the movements of the switching contacts (3, 4, 5) with regard to the contact carrier are controlled by the fixed step contacts (1) representing at the same time cams, characterised in that : the contact carrier has guide rails (6) aligned radially to the circle of the step contacts (1), for at least two contact slides (9, 13), a first contact slide (13) carries a main switching contact (3), and another contact slide (9) carries two resistance contacts (4, 5) flanking on both sides the main switching contact (3) in the direction of rotation, movements, occurring in operation, of the contact slides (9, 13) in opposite directions on the guide rails (6) are limited in both directions by limit stops (15, 16) on the contacts slides (15, 16) themselves, so that, when the limit stops (9, 13) lie next to each other, in each case all the spring forces (12, 14) assigned to the switching contacts (3, 4, 5) load the one switching contact (3, 4, 5) which is just carrying current, and the guide rails (6) and the contact slides (9, 13) engage with one another, guiding each other.
Patent DE-3404654-A1 (DE)
Title: Flameless pocket heater
Inventor: OTTO HANS-HERMANN
IPC: A61F7/03
Filed: 1984-02-10
Abstract: The flameless chemical pocket heater is a pocket heating device which, in contrast to conventional devices, is based on utilising the thermal energy produced in particular chemical processes. Approximately 25-30 g of of iron powder, mixed with salt, are placed in an air-permeable, tear-resistant paper bag. With the aid of the salt as a catalyst, the oxygen in the air converts the iron powder into iron oxide. So as to prevent the reaction from happening immediately after manufacture, the pillow-shaped paper bag must be welded into an airtight plastic film. Approximately 15 minutes after removing the bag from the plastic film, the oxidation process starts up. After an hour, the operating temperature of 55-60 DEG C is attained, which persists for approximately 10 hours. These times vary, however, depending on environmental and operating conditions. The possibilities for using the pocket heater are manifold. In addition to hunters, soldiers and sports fans, who spend much time in the open air at low temperatures and who will appreciate this source of heat, uses in the medical field are also conceivable, for example for compresses.
Patent DE-3405996-A1 (DE)
Title: Busbar arrangement
Inventor: NEUBACHER KARL
IPC: H02B1/20
Filed: 1984-02-20
Abstract: In the case of busbar arrangements which are to be cut to length and in which each flat conductor (3) is arranged in a dedicated insulating profile (2), the insulating profiles (2) are loosely connected in a longitudinally displaceable manner by means of brackets (5). The connecting lugs (4) of the flat conductors (3) are in this case assembled touching one another in groups so that, after cutting off, the insulating profiles (2) must be longitudinally displaced in order to achieve the uniform assembly separation between the connecting lugs. This extends the leakage current paths and removes any metal burrs occurring. <IMAGE>