baber/WOPTO huggingface dataset:
Patent DE-3030734-A1 (DE)
Title: Anhydrous di:glycolic acid prepn. - by acid-catalysed di:normal butyl di:glycolate hydrolysis and azeotropic dehydration with water-immiscible solvent
Inventor: BALTES HERBERT DIPL CHEM DR
IPC: C07C51/48
Filed: 1980-08-14
Abstract: Anhydrous diglycolic acid prepn. comprises (a) the hydrolysis of di-n-butyl diglycolate with water and an acid catalyst. The n-butanol generated is distilled off as an azeotrope with water. (b) The aq. diglycolic acid formed in hydrolysis is dehydrated azeotropically with an organic solvent which is water-immiscible or difficultly miscible with water. Diglycolic acid is crystallised from the solvent. The organic solvent is esp. Meiso-BuCO (pref.), Et2CO or di-n-butyl ether. Diglycolic acid itself can be used as catalyst. Diglycolic acid is used as a coagulant for rubber and plastics, as an emulsion breaker for petroleum and as a synthesis intermediate. Over 99 wt.% pure diglycolic acid is obtd. in high yields, e.g. 93%, from di-n-Bu diglycolate, previously burnt as a waste-prod.
Patent DE-3031024-A1 (DE)
Title: Vacuum cleaner with lid seal - has sealing lip at one seal end protruding into gap between housing edge and lid
Inventor: HOFFMANN RUDI
IPC: A47L9/00
Filed: 1980-08-16
Abstract: The design of the seal is intended for equalising the tolerances in the sealing gap with as little force as possible. The seal fits in a gap between the edge of a vacuum cleaner housing aperture and a corresponding lid, the seal being fitted either to the aperture edge or the lid. The seal (5) has a sealing lip (7), held at one end, which protrudes into the gap and is inclined at less than 90 deg. to the plane retaining the gap. The inclination of the sealing lip, with the lid (2) open, is preferably less than 45 deg. The sealing lip may be secured outside the opposite sealing surfaces of the aperture edge (4) and the lid, the securing starting at the sealing foot. The lip connection to the sealing foot may be carried out on the inner edge of the vacuum cleaner housing aperture.
Patent DE-3040751-A1 (DE)
Title: Contactless optical on=off switch e.g. for warm air hand dryer - uses light pulses reflected from adjacent object to trigger switching stage
Inventor: POLLINGER HANS ING GRAD
IPC: H03K17/94
Filed: 1980-10-29
Abstract: The switch uses a light source (1) providing a pulsed beam and a photodetector (5) controlling a switching stage, exhibiting a long switching duration relative to the length of the received light pulses. Pref. the switch is used to operate the fan and the electric heating element of a warm air hand dryer (6), with the light source (1) and at least one photosensor (5,5') each positioned at the side of the warm air outlet, so that the reflected light pulses are received when the hands are placed beneath the latter. The photosensor (5,5') is pref. coupled to the switching stage via a frequency filter tuned to the frequency of the light pulses and an amplifier. The switching stage may comprise a monostable multivibrator coupled to a bistable multivibrator including a timing stage.
Patent DE-3109066-A1 (DE)
Title: "Method for protecting the bath surface of a magnesium melt"
Inventor: STRIGL REINHARD DIPL-ING
IPC: C22B26/22
Filed: 1981-03-10
Abstract: A method for protecting the bath surface of a magnesium melt or a melt of a magnesium alloy is proposed. This involves establishing, above the melt bath surface, a protective gas atmosphere consisting essentially of inert gas. In order to be able to protect the bath surface of melts of magnesium or magnesium alloys reliably and in an economical and environmentally compatible (environment-friendly) manner against fires, it is proposed to apply to the melt bath surface liquefied inert gas, preferably argon or nitrogen.
Patent DE-3109313-A1 (DE)
Title: Electrical switch, especially for electronic clocks (watches)
Inventor: MATSUMOTO MASATAKA
IPC: G04G21/08
Filed: 1981-03-11
Abstract: The invention relates to an electronic push-button switch having a plurality of pushbuttons (28) and associated switch contacts. The switch contacts are constructed as conductor runs which are printed on an insulating panel or layer (23) and are in contact with a rubber layer (22) which is conductive under pressure. The rubber layer (22) which is conductive under pressure contains a conductive powder. When it is compressed by means of the respective pushbutton (28), the rubber layer (22) becomes conductive so that it closes or bridges the relevant switch contacts. A plurality of switch contact pairs are connected to connections which are arranged (closely) side by side. <IMAGE>
Patent DE-3111018-A1 (DE)
Title: Device for producing a pulse signal for controlling an internal combustion engine
Inventor: AKIO HOSAKA
IPC: F02B75/02
Filed: 1981-03-20
Abstract: Device for producing a pulse signal for controlling an internal combustion engine, a machine control pulse signal (P16) being calculated by means of a digital computer (10) during normal operation. If a fault or a malfunction of the digital computer (10) is perceived, the machine control pulse signal (P16) is replaced by an apparent signal (P31) which is generated by an auxiliary pulse generator (30). <IMAGE>
Patent DE-3112183-A1 (DE)
Title: Method for detecting the formation of cracks or craters in solid materials
Inventor: MAIR HERBERT
IPC: G01M3/04
Filed: 1981-03-27
Abstract: For the purpose of temporal and/or spatial detection of the formation of cracks or craters in solid materials, a number of electrically conductive wires are arranged inside the material and/or on its surface in a defined way and permanently connected to the material. Each wire is measured individually with reference to its conductivity, and each change in the measurement result of one of the wires is stored chronologically in an electronic storage device.
Patent DE-3114119-A1 (DE)
Title: Control circuit for regulating the pressure in vacuum systems
Inventor: FREMEREY JOHAN K DR
IPC: G05B5/01
Filed: 1981-04-08
Abstract: A control circuit for regulating the pressure in vacuum systems, with pressure transducers and with actuators connected operatively to these, has a first pressure transducer, reference numeral (6) in the accompanying drawing, with a time constant low in comparison with the control time constant of the control circuit, and a second pressure transducer (12) with a long-time pressure-indicating stability high in comparison with the first pressure transducer, the compensation of brief pressure fluctuations being controlled essentially by the first pressure transducer, whilst the second pressure transducer compensates essentially slow pressure fluctuations. The drift of the first pressure transducer, which causes such pressure fluctuations, is thus compensated. A gas-friction vacuum meter is suitable for preference as a second pressure transducer. <IMAGE>
Patent DE-3115160-A1 (DE)
Title: Circuit arrangement for frequency conversion
Inventor: REFFLINGHAUS BERND DIPL ING
IPC: H03L7/183
Filed: 1981-04-15
Abstract: The described circuit arrangement for frequency conversion, with which any of a plurality of agreed input frequencies is intended to be converted into any of a plurality of agreed output frequencies at minimum frequency divider cost, has a first group of frequency dividers at its input. The number and division ratio of these dividers which are enabled or are not enabled by a changeover switch depending on the actual value of the input frequency depend only on the agreed values of the input frequencies. A second and third group of dividers, together with two further changeover switches, generate at the output of a phase-locked loop for each input frequency - due to the selection of the division ratio of their dividers - an oscillation whose frequency is as high as the lowest common multiple of all the agreed output frequencies. Any of the agreed output frequencies can be tapped at the output of the circuit arrangement by activating a divider of a fourth group of frequency dividers by means of a fourth switch.
Patent DE-3117284-A1 (DE)
Title: Circuit arrangement for monitoring a balanced (symmetrical) three-phase alternating current
Inventor: WIEDEMER MANFRED
IPC: H02H3/26
Filed: 1981-04-30
Abstract: In order to protect loads and to ensure the operation of connected apparatuses, it is necessary to monitor a three-phase alternating current for the rotation direction of the phases being incorrect and for failure of phases. A circuit arrangement is specified for this purpose which, in addition, also emits digital signals at the output, which signals can be evaluated by digital circuits. A zero-crossing detector is arranged in each phase of the three-phase system and consists of an optocoupler (which is located in the bridge arm of a rectifier circuit) and of a pulse-former stage which emits the digital zero-crossing signal (ZVD). The zero-crossing signals (ZVD) are supplied to a three-phase (rotating-field) monitoring circuit which confirms whether a zero-crossing signal from the third phase has occurred between two zero-crossing signals which are associated with successive phases. If this is the case, then there is a defect in the rotation direction of the phases. The zero-crossing signals (ZVD) are furthermore supplied to a phase-failure monitoring circuit which emits a defect signal if zero-crossing signals allocated to two different phases occur simultaneously. The circuit arrangement can be used for both star-connected circuits and for delta-connected circuits. <IMAGE>
Patent DE-3124221-A1 (DE)
Title: Device for aligning a door case
Inventor: KACHEL FRITZ
IPC: E04F21/00
Filed: 1981-06-20
Abstract: The invention relates to a device for aligning a door case within a masonry-work reveal, having a frame which is to be set up on the inner side of the door case and having an aligning tool (13) which is to be introduced into a gap (12) between the outer side of the door case and the reveal, is supported on the reveal, on the one hand, and on the door case, on the other hand, and thereby braces the door case with respect to the frame. The invention provides at least one tool (13) which is mounted on the frame and is formed by a bracket, engaging around the door case on mounting, with an alignment leg (14) which is assigned to the gap (12), engages therein on mounting, can be axially displaced, can be rotated about its longitudinal axis and can be fixed in the respective axial and rotational position. The alignment leg (14) bears, in a stationary manner, a shaped piece (17) which is designed as a bracing element and has a non-rotationally symmetrical cross-section. The bracket is rotatably mounted on the frame and/or the alignment leg (14) is arranged such that it can be displaced in parallel. <IMAGE>
Patent DE-3125057-A1 (DE)
Title: Process for the preparation of furans and phenanthrenes
Inventor: WEIBERG OTTO DR
IPC: C07D307/91
Filed: 1981-06-26
Abstract: Furans are prepared by reacting a  beta , gamma -olefinically unsaturated carbonyl compound, at temperatures of from -20 to +150 DEG C, with an oxidising agent which is suitable for epoxidising or hydroxylating olefinic double bonds. Phenanthrenes are prepared by converting a  beta , gamma -olefinically unsaturated carbonyl compound from the group comprising the 2-(cyclohexen-1-yl)cyclohexanones, at temperatures of from -20 to +150 DEG C and using an oxidising agent which is suitable for epoxidising or hydroxylating olefinic double bonds, into the corresponding, partially hydrogenated, dibenzofuran, subsequently reacting the latter with a dienophile, and subjecting the resulting adduct first to a dehydrating treatment and then to a dehydrogenating treatment.
Patent DE-3127585-A1 (DE)
Title: Internal combustion engine, especially an internal combustion engine functioning with self-ignition
Inventor: EISELE ERWIN PROF DR ING
IPC: F02B19/14
Filed: 1981-07-13
Abstract: An internal combustion engine functioning with self-ignition comprises a main combustion chamber formed by a piston recess and a swirl chamber arranged in the cylinder head and of at least sectionally spherical design in the upper apex area and in the lower apex area and cylindrical design in the area lying between the apex areas, the diameter of the spherical apex areas being equal to the diameter of the cylindrical area and an injection nozzle being provided in the upper apex area, by means of which the fuel is injected into the swirl chamber essentially into an area which has a wall area offset in relation to the inlet orifice of a transfer port opening tangentially, which wall area starting from the inlet orifice has a shoulder undercutting the spherical contour in the lower apex area with increasing depth counter to the swirl direction of rotation. In order to improve the exhaust emission and to reduce the fuel consumption the cylindrical area has a height of more than 0 to 0.2 DK and the transfer port a diameter of 0.2 to 0.4 DK and a length of 0.5 to 1.0 DK, and the fuel is essentially sprayed on to a wall area of the lower spherical apex area extending from the end of the shoulder counter to the swirl direction of rotation, which area has a length of 0.2 to 0.5 DK.
Patent DE-3129094-A1 (DE)
Title: Advance warning device for motor-vehicle traffic
Inventor: ROEBBELEN GUENTER
IPC: B61L29/28
Filed: 1981-07-23
Abstract: The innovation indicated is intended for use on roads, primarily motorways, motorway approach roads and exits and on level-crossings. The main components are a transmitting device (1, Fig. 1) and transmitters (55, 57, Fig. 5), and receivers with a display unit (31, Fig. 2) in the motor vehicle. The commands to be transmitted, for example, "congestion", "slippery surface", "driver on the wrong side of the road", are fed to the transmitters (55, 57, Fig. 5) along the motorway by the transmitting device (1, Fig. 1). The transmitters can be operated individually and jointly and separately according to direction of travel or jointly. A receiver in the motor vehicle picks up the transmitted command and makes it optically and acoustically perceptible on the display unit. Other transmitters with a continuous pulse (53, Fig. 4) on the motorway approach roads set the vehicle receiver automatically to the reception frequency belonging to the direction of travel. By means of transmitters (54, Fig. 4) erected in the direction counter to motorway exits, a warning signal "stop" is triggered on the display unit when the driver enters them from the wrong direction. Similar transmitters with a continuous pulse (61, 63, Fig. 3) in the region of level-crossings trigger a warning signal "train" when a train is approaching. <IMAGE>
Patent DE-3130614-A1 (DE)
Title: Multi-stage thread-storage disc for two-for-one twisting spindles
Inventor: KALLMANN JUERGEN DIPL ING
IPC: D01H7/86
Filed: 1981-08-01
Abstract: A thread-storage disc for two-for-one twisting spindles has at least two thread-storage disc rings of differing diameter which are arranged concentrically one above the other and which are both provided with radially directed thread run-through channels, a thread-deflecting body being insertable into the disc centre, in order respectively to connect one of the two thread run-through channels to the spindle hollow shaft, so as to afford the possibility, for the purpose of varying the formation of the thread balloon, to cause the thread to run respectively onto one or the other of the two thread-storage rings.
Patent DE-3132828-A1 (DE)
Title: Connecting part for wooden bars and process for installing the connecting part
Inventor: SELL RUDOLF DR ING
IPC: F16B11/00
Filed: 1981-08-19
Abstract: According to the invention, a connecting piece in the form of a metal tube is glued into a cross-sectionally annular bore in the end surface of bars consisting of waxed or glued wood. This thus provides a multi-shear glued connection which exerts reduced splitting tensile forces onto the bar end. The load introduction via the sleeve-shaped glued-in portion better distributes the loads over the wood cross-section and, at the same time, constitutes an encircling confinement for the wood cross-section lying within the circular groove. The glued-in metal bars have a larger glued surface, with a smaller penetration depth, than a solid bar. The invention specifies a process by means of which it is possible to glue in even thin-walled metal sleeves which constitute only a small reduction in the wood cross-section. The glue, even cavity-filling glues, can be introduced into the annular groove via a glue-supply channel such that an air inclusion is avoided and liberal wetting of all glue surfaces is achieved. Further configurations of the casing surfaces with gluing grooves and profiling contribute to ensure the glue distribution in the annular groove in order that a high degree of bonding on all glue surfaces takes place. The invention further provides an additional encircling confinement of round wooden bars with collar rings or the like, which are capable of preventing wooden bars of low splitting tensile strength from splitting.
Patent DE-3135567-A1 (DE)
Title: Setting alginate compositions
Inventor: PELLICO MICHAEL A
IPC: A61K6/90
Filed: 1981-09-08
Abstract: The invention relates to a setting alginate composition in the form of a two-component system composed of components A and B which forms a setting dental composition when these interact. Component A contains an alkali metal alginate, component B contains a divalent metal salt and a reaction rate retarder. The composition according to the invention is very suitable as impression material in dentistry.
Patent DE-3147550-A1 (DE)
Title: Loop-data transmission system for a motor vehicle
Inventor: SHINOHARA TOSHIO
IPC: G02B7/00
Filed: 1981-12-01
Abstract: A loop-data transmission system for a motor vehicle has at least one ring transmission line, one main station and a plurality of sub-stations. Each of the substations is connected to at least one electrical load or measuring sensor of the motor vehicle and has a logic circuit for logically adding information, which is received from the sensor connected to it, to the information received via the transmission line, by which means output information for transmission to the main station via the transmission line is generated.
Patent DE-3149521-A1 (DE)
Title: Display device for different values
Inventor: KNOLL DIETER B DR
IPC: G09F9/00
Filed: 1981-12-14
Abstract: In a display device for different values having a circular element (1) which is subdivided into different sectors which contain means that can assume at least two optical states, four different sectors (2-5) are provided which can be driven individually or in combination with other sectors in such a way that sixteen different states can be displayed using the four sectors. <IMAGE>
Patent DE-3149752-A1 (DE)
Title: Sound-absorption body and sound-absorption wall element fabricated therefrom
Inventor: WAGNER HANS DIPL ING
IPC: E04B1/86
Filed: 1981-12-16
Abstract: The invention relates to a sound-absorption body (10) of untreated thin glassfibres (14) which are arranged extremely randomly. The sound-absorption body (10) has a fibre density which increases from the sound-absorbing side to the opposite side. To this end, it may be made up of a plurality of layers (11-13) of different fibre densities and have a coarse glass-fibre weave (16) as a supporting sheathing. The sound-absorption body (10) can be used in sound-absorption wall elements which are bounded on the sound-absorbing side (18) by a coarse-meshed wire gauze (17) and are bounded on their reversed side by a reflecting wall (19). <IMAGE>
Patent DE-3150011-A1 (DE)
Title: Device for simultaneous measurement of wind direction and wind speed
Inventor: ANDERSEN UWE DIPL ING
IPC: G01P5/18
Filed: 1981-12-17
Abstract: Published without abstract.
Patent DE-3151528-A1 (DE)
Title: Cartridge gas lighter
Inventor: CHRISTIE JOHN
IPC: F23Q2/28
Filed: 1981-12-24
Abstract: Known gas lighters have the disadvantage that refilling with gas, particularly in transit, is very inconvenient. The invention eliminates the disadvantage by equipping the lighter with an insertable gas-filled cartridge. When the same is empty, it can be replaced by a gas-filled replacement cartridge in a few seconds. The body of the lighter remains intact, only the cartridge is replaced. The cartridge has a guide, with which it can be inserted into an identical guide on the lighter, it being possible to open the cartridge via a valve when pressure is applied to a knob and to ignite via an electrical contact the gas flowing out.
Patent DE-3200347-A1 (DE)
Title: Process for making a salt slag product capable of landfill disposal or suitable for recovery of valuable materials
Inventor: LOEBLICH KARL-RICHARD DIPL CHE
IPC: C22B21/00
Filed: 1982-01-08
Abstract: Measures are indicated, by means of which the salt slag which, in the presence of moisture, evolves toxic gases and which has been used for covering molten aluminium and has been separated from the latter, can be processed to give a product which is capable of landfill disposal or can be reprocessed. For this purpose, the salt slag converted into a finely particulate form is treated with hot water, then subjected to a heat treatment, dried and cooled.
Patent DE-3202253-A1 (DE)
Title: Abutment for receiving the free end of blocking members
Inventor: MOESLINGER HERIBERT
IPC: E05B15/02
Filed: 1982-01-25
Abstract: Abutment for receiving the projecting part of blocking members (5) of a lock, which is designed as an essentially rectangular shaped tube (1) and which is provided with recesses (4) for receiving the blocking member (5) and with bores (2, 6) for receiving fastening screws for fixing to a door frame, and in which, to achieve a high tear-out resistance, some (2) of the bores for receiving fastening screws (3) extend parallel to the recesses (4) and others (6) of the bores extend at an inclination to these. <IMAGE>
Patent DE-3203588-A1 (DE)
Title: Mixture-compressing, spontaneous-ignition internal combustion engine, especially for motor vehicles, with an elastically deformable combustion chamber lining
Inventor: BOLL WOLF DR
IPC: F02B75/36
Filed: 1982-02-03
Abstract: A mixture-compressing, spontaneous-ignition internal combustion engine, especially for motor vehicles, with an elastically deformable combustion chamber lining, which has a support element with a U-shaped cross section which is supported by at least one collar on a surface defining the combustion chamber. In order to obtain optimum silencing of the combustion noise at least one further elastically deformable component is assigned to the combustion chamber lining, which on the combustion chamber side is supported by one part of a support surface on the support element.
Patent DE-3206329-A1 (DE)
Title: Candle holder
Inventor: FRISCH HEINZ
IPC: F21V35/00
Filed: 1982-02-22
Abstract: A candle holder consists of a glass stem element and, at the top of the stem element, a holder for the foot of a candle, the stem element consisting of a foot (1) and a stem (2) which correspond to those of a drinking glass or ornamental glass, the holder (3) being connected to the head of the stem (2) in a positive-fitting or friction-fitting manner. <IMAGE>
Patent DE-3207127-A1 (DE)
Title: Maritime emergency message buoy, particularly for deep-sea shipping
Inventor: TILGNER DIETER
IPC: B63B49/00
Filed: 1982-02-27
Abstract: The invention relates to a maritime emergency radio buoy, provided with a conversation/sound recording device (functionally similar to a flight recorder/voice recorder) which is operated without cables or wires from a transmitting system installed on the ship. The purpose of the invention is to record the spoken word on the bridge of a ship either for the entire duration of the trip or only when an accident occurs, in order subsequently to clarify the cause of the accident, or to be able to reproduce the accident, independently of the result of the accident, particularly in the case of accidents with total loss, or even just for clarifying the question of guilt in the case of collisions. <IMAGE>