baber/WOPTO huggingface dataset:
Patent DE-3030465-A1 (DE)
Inventor: BLUEMNER CHRISTOPH DIPL ING
IPC: H02P27/06
Filed: 1980-08-12
Abstract: A method for operating a frequency converter of the type having an auxiliary commutating device for commutation at speeds which are lower than a machine-related minimum speed of operation. In a first speed range which begins at speed zero, the thyristors of a three-phase bridge of the inverter are commutated cyclically, as customary, six times per revolution of the machine. In a second speed range which is adjacent to the first speed range and below the machine-related minimum speed of operation, only every second commutation is executed. In embodiments of the invention wherein there is provided a third speed range which is adjacent to the second speed range and extending up to the machine-related minimum speed, only every third commutation is executed. In this manner, an auxiliary commutating device having a predetermined frequency limit can be utilized at speeds corresponding to two or three times the speed at which such an auxiliary commutating device could be used in prior art systems. Only slight drops in mean torque are experienced with the inventive method.
Patent DE-3033663-A1 (DE)
Title: Coupling hook for tractor hitch - has cable operated swinging plate controlling release finger, swung between open and closed positions
Inventor: VOLLMER JUERGEN ING GRAD
IPC: B60D1/04
Filed: 1980-09-06
Abstract: The connecting hook for the three point hitch of a tractor includes a locking arm (4) with an enlarged nose which is advanced and retracted so as to lock or release the shackle (3) on the device to be attached to the tractor. This arm is connected by a hinge to an extension of a cover plate (7) which fits over an opening at the rear of the body of the hook. This plate has an anchorage (8) for a control cable so that it can be swung between positions for operating the locking arm. When the plate is tilted back into the release position, it is swung back to fit over a bulging rim (10) at the rear of the body, uncovering the top opening. At the same time, a pin (13) mounted between its side flanges travels down sloping slots (11) in the sides of the body, locking the arm in its position of maximum tilt to free the shackle. This prevents the arm from being swung down by a spring (5) secured near its hinge axis.
Patent DE-3038430-A1 (DE)
Title: Secondary oil recovery by surfactant flooding - using alkoxylated lignosulphonate to suppress surfactant adsorption
Inventor: KALFOGLOU GEORGE
IPC: C09K8/88
Filed: 1980-10-11
Abstract: Surfactant flooding is carried out by (a) injecting a surfactant soln. contg. an alkoxylated lignosulphonate, or (b) injecting an aq. soln. of (I) and then injecting a (i)-contg. surfactant soln., or (c) injecting an aq. soln. of (I) and then injecting a surfactant soln. Specifically, (I) is a lignosulphonate alkoxylated with ethylene oxide or propylene soln. (I) is pref. an ethoxylated lignosulphonate, which has been sulphomethylated and oxidised with O2 prior to ethoxylation. The amt. of (I) injecting should be sufficient to occupy all the active sites on the formation matrix (e.g. 0.01-1.0 pore vols.). Alkoxylation improves the solubility of the lignosulphonate and increases its capacity for reducing adsorption of surfactant on the formation rock, both in limestone and sandstone formations.
Patent DE-3042902-A1 (DE)
Inventor: WEBER OTTO
IPC: G01G19/03
Filed: 1980-11-14
Abstract: The invention describes a method for checking the weight of consignments assembled in containers, where the net weight of a container is measured during the passage and transmitted to a consignment computer, the weight of the container filled with the articles of this consignment is also measured in the passage and transmitted to the computer, which ascertains the difference of the two weights as the actual weight of the consignment and compares it against the fed-in nominal weight of the consignment in question, whereupon in case of a deviation of the actual weight from the nominal weight above a predetermined tolerance boundary the container in question is sorted out.
Patent DE-3045536-A1 (DE)
Title: Mechanism securing lathe chuck in centred position - includes expanding pins with taper ends engaging in annular groove
Inventor: BLESSING HERMANN
IPC: B23B31/177
Filed: 1980-12-03
Abstract: The mechanism secures a chuck in a centred position on the end flange of a tubular lathe spindle, this flange bearing against the rear face of the chuck. An actuating ram is mounted at the rear spindle end, its piston being coupled to a push-and-pull rod passing through the spindle. In the forward end of the rod (24) are a number of guides (36) running in the lengthwise direction and inclined to the spindle axis, for the feet (38) of expanding pins (32) working in radial guides in the flange. The portions of these pins protruding from the flange as the result of axial movement of the rod taper towards the outside on their rear faces (34), and engaged in an annular groove (20) in a centring sleeve (16) on the chuck (14), so as to clamp the latter against the flange on extension.
Patent DE-3100003-A1 (DE)
Title: Process and apparatus for the stacking of stackable material, especially of mineral-fibre boards in a production line
Inventor: HORRES JOHANNES
IPC: B65G57/30
Filed: 1981-01-02
Abstract: The stacking apparatus consists of a stack-supporting surface (30), formed especially by a roller conveyor (45), with a rear build-up stop (47) movable in a controlled manner, as well as at least two lifting devices (24, 25). The two lifting devices each have, for example, synchronously running fork-shaped supporting elements (41, 42 and 43, 44) which are arranged in pairs and which can pass through one another in the vertical direction and can be located alternately below and above the stack-supporting surface (30) and which can move laterally out of the stack space (23) and into the latter. As a result, the lifting devices (24, 25) can work in alternation and lift a layer of, for example, mineral-fibre boards, which is run onto the stack-supporting surface (30), by means of one lifting device (for example, 24), whilst the other lifting device (for example, 25) moves under the stack-supporting surface (30) in preparation for the lifting movement for the next layer. In the stacking process according to the invention, an especially short cycle time is obtained in that each new layer, immediately after stopping at the build-up stop (47), can be lifted by the amount of the effective stroke, so that the stack-supporting surface (30) is free again in the shortest possible time for the run-in of the front edge of the subsequent layer. <IMAGE>
Patent DE-3102654-A1 (DE)
Title: High-voltage switch with a switchable parallel resistor
Inventor: SLAMECKA ERNST PROF DR TECHN
IPC: H01H33/16
Filed: 1981-01-23
Abstract: Switching resistors for limiting switching voltages in very high voltage networks require an optimally designed resistor switching device for their operation, for various reasons. Considering the development process, which has not yet been completed in this field, significant improvements are necessary to contribute to further technical progress. This object according to the invention has mainly been achieved as follows:   1. Introduction of switching cams as a structural element of the resistor switching device, 2. An identical drive principle - switching cams - both for switching on as well as for switching off the switching resistor, 3. Simplification and quantitative reduction in the structural parts.
Patent DE-3104566-A1 (DE)
Title: Heat-pump heating system
Inventor: SCHLODOWITZKI KURT
IPC: F24D12/02
Filed: 1981-02-10
Abstract: The invention relates to a hot-water heating system operated by means of at least one heat pump. According to the invention, there is inserted into the forward-flow and return-flow line of the condenser circuit a heat-pump/condenser/heating-circuit distributor (WKH), into which open the pump inflow line and the return-flow line of the heating circuit. <IMAGE>
Patent DE-3108061-A1 (DE)
Title: Key module
IPC: H01H21/02
Filed: 1981-03-04
Abstract: The invention relates to a key module (1) in the case of which a rectangular, preferably square enclosure (12) is provided in order to permit a different number of keys with the same common key frame, and to allow a subsequent change in the number of keys, and in the case of which a plurality of supporting points (2-7; 2'-7') are provided in a row on two opposite inner sides (48, 49), into which bearing bolts (8) can engage which are provided on side edges of the plates of the keys (9, 10). <IMAGE>
Patent DE-3113481-A1 (DE)
Inventor: WAGNER PAUL-HEINZ
IPC: B25B21/00
Filed: 1981-04-03
Abstract: 1. Power-driven screw-driving tool comprising 1.1 a wrench head casing (10) including a rotatable ring inset (11) to mount a button die, 1.2 a driving means (28, 29) engaging the wrench head casing (10) to move relative to the wrench head casing (10) a support element (27) capable to be applied to a fixed abutment (20), and 1.3 a rotation lock retaining the ring inset (11) in the wrench head casing (10) during the tensioning movement of the driving means (28, 29), characterized in that 1.4 the rotation lock consists of a self-locking gear engaging a tothing (14) of the ring inset (11) and comprising a rotatable drive shaft (17).
Patent DE-3113549-A1 (DE)
Title: Process for hydrocracking heavy oil/fly ash suspensions
Inventor: KHULBE CHANDRA PRAKASH
IPC: C10G47/04
Filed: 1981-04-03
Abstract: An improved process for hydrocracking heavy hydrocarbon oil, such as oils extracted from tar sands, is described. The charge oil is passed, in the presence of excess hydrogen, through a tubular hydrocracking zone, whereupon the stream issuing from the upper side of the zone is separated into a gaseous stream, which contains a material having a wide boiling range, and into a liquid stream which comprises heavy hydrocarbons. According to the invention, the charge used is a suspension of the heavy hydrocarbon oil and finely disperse fly ash or finely particulate coal of high ash content. The presence of this ash in the charge leads to a great reduction in coke precursors and thus in the formation of carbonaceous deposits in the reaction zone.
Patent DE-3114351-A1 (DE)
Inventor: KUCH HEINZ DR
IPC: C07D209/38
Filed: 1981-04-09
Abstract: Oxindole derivatives of the general formula I    <IMAGE>  (I)  are described, and also processes for their preparation and drugs containing them. The new compounds exhibit a neuroanabolic action in various animal models.
Patent DE-3117462-A1 (DE)
Title: Process and apparatus for aeration of the waste water/activated sludge mixture in the activation process in waste water purification plants
Inventor: MENGES MARTIN ING GRAD
IPC: C02F3/12
Filed: 1981-05-02
Abstract: The process for aeration of the waste water/activated sludge mixture is characterised in that a waste water flow (a, d) is produced by forced circulation in countercurrent to the upwardly directed waste water-air flow (b, e), effected by an aeration apparatus (19), in the waste water/activated sludge mixture to prolong the contact time between air and waste water. The depths of submersion of the aeration apparatus (19) can be controlled in dependence on the actual oxygen demand. Rectangular, round and annular activation tanks can be equipped with the aeration system. <IMAGE>
Patent DE-3119792-A1 (DE)
Title: Process for the continuous calender finishing of a fabric
Inventor: SANDO YOSHIKAZU
IPC: D06B3/10
Filed: 1981-05-19
Abstract: The process for the continuous calender finishing of a fabric (10) is to be improved in such a way that there is no longer any need for a caustic potash solution and a stretching of the fabric. The solution is that a woven or knitted fabric (10) consisting of cotton or containing cotton fibres is transported continuously through a high-pressure steamer (1) containing moist heat of high temperature and increased pressure and there is first saturated with a quantity of hot water sufficient for subsequent swelling and setting in the moist heat and then steamed. <IMAGE>
Patent DE-3121141-A1 (DE)
Title: Rapid-construction scaffolding and coupling unit for connecting a stand tube, in particular, to longitudinal and/or transverse and/or diagonal members, and stand rosette with appertaining coupling member
Inventor: ASPEREN I P VAN
IPC: E04G7/30
Filed: 1981-05-27
Abstract: In order, in the case of rapid-construction scaffolding comprising stand tubes, longitudinal and/or transverse and/or diagonal members and stand rosettes with respectively appertaining coupling members, to be able to work with higher loadings in the joints, in particular in the stand rosettes, on the one hand, and to increase the possible applications of such rapid-construction scaffolding owing to the possibility of using more than only four members per connection on a stand rosette, on the other hand, the invention provides that the joints are formed respectively by an ashtray-type stand rosette which is arranged rigidly on a stand. The upper, annular border of the said stand rosette is provided in the radial direction with a number of coupling members such that a nose on the front side of each coupling member engages over said border and the extent of the engagement of said nose is not greater than the depth of the stand rosette, there being located in the coupling member, further to the rear side of the nose, a through-passage for receiving a freely movable wedge which, by means of rapid clamping, forms the rigid connection between the border of the stand rosette and the coupling member.
Patent DE-3122323-A1 (DE)
Title: Control of the pressure water of cutting drums with internal spray arrangement
Inventor: HALLER HERBERT
IPC: E21C35/23
Filed: 1981-06-05
Abstract: The invention relates to an internal spray arrangement for cutting drums, in particular for winning machines and heading machines. The spray arrangement serves to specifically admit pressure water to the cutting picks in engagement. Via a bore (7) in the fixed cutting-drum spindle (8), pressure water passes into an annular distributor passage (15), from which branch passages (16) lead to valve units (19). These valve units (19) are activated via plungers (30) from a control ring (29) arranged eccentrically to the cutting-drum spindle (8). <IMAGE>
Patent DE-3127728-A1 (DE)
Title: Traffic-lights indicator
Inventor: SCHEFFLER GUENTER DIPL ING
IPC: G08G1/0967
Filed: 1981-07-14
Abstract: Published without abstract.
Patent DE-3128497-A1 (DE)
Title: Heat exchanger
Inventor: FUNKE KARL-HEINZ
IPC: F28D7/16
Filed: 1981-07-18
Abstract: The invention relates to a heat exchanger having a bunch (bundle) of heat exchange tubes which is surrounded at a distance by a jacket, has splitter plates and is arranged in a sealed fashion in lateral tube plates (sheets) which are connected to the jacket. In order, in the case of damage to or breakage of a heat exchange tube, to prevent one medium from passing into the circuit of the other medium, there are arranged in the heat exchange tubes of the tube bundle internal tubes of a further tube bundle separated from the tube bundle. These internal tubes are arranged in a sealed fashion in the lateral tube plates and are operationally connected thermally to the heat exchange tubes. Formed between the tube plates of the two tube bundles are chambers which are connected to the interspaces between the internal tubes and the heat exchange tubes. The chambers and the interspaces are filled with a heat exchange medium. An expansion vessel and a pressure sensor are connected to the chambers. <IMAGE>
Patent DE-3131294-A1 (DE)
Title: Electronic counter in 1-of-10 code
Inventor: MERKLE PAUL
IPC: H03K21/02
Filed: 1981-08-07
Abstract: This electronic modulo-10 counter is a counter which is capable of counting up and down. It does not consist of simple flip flops which are combined with delay circuits, but of dual flip flops. In this electronic counter, a decade according to Figure 1 is required per decimal place because one decade only covers one decimal place. In this up/down counter, the flip flop input circuits consist of two OR circuits having in each case two inputs, and four AND circuits having in each case two inputs. The up decade carry or down decade carry is preactivated by a special additional circuit (17) which consists of two AND circuits (18 and 19) having in each case two inputs and an OR circuit (20) having two inputs and a further AND circuit (21) having two inputs. <IMAGE>
Patent DE-3132249-A1 (DE)
Title: Process and device for casting a continuous interlocking element strip from plastic for zip fasteners
Inventor: TAKESHIMA KIYOSHI
IPC: B29C48/92
Filed: 1981-08-14
Abstract: A continuous meander-shaped interlocking element strip (1) for use in the production of zip fasteners is produced on a rotating die wheel (14) which has, on its circumference, an endless, meander-shaped cavity (28) for receiving heated thermoplastic material supplied by a fixed injection nozzle (36). The cavity (28) has numerous bottlenecks (34, 35) for constricting or delaying, in the cavity, the stream of thermoplastic material supplied, so as thereby to hold back much of the thermoplastic material in the central region (29) and the transverse regions (30, 31) which correspond to the head region (3) and the legs (4, 5) of an interlocking element (2). <IMAGE>
Patent DE-3135256-A1 (DE)
Title: Fastening element provided with a wedge-shaped portion
Inventor: SCHOENBRUNNER FERDINAND
IPC: F16B2/14
Filed: 1981-09-05
Abstract: The invention proposes a fastening element which is provided with a wedge-shaped portion and is intended for the releasable connection of two mutually supporting structural parts which are in operative connection with a spring element holding the wedge-shaped portion in the clamping position. The fastening element is designed in the form of a U, one leg forming the wedge-shaped portion and its other leg forming the spring element. On its underside, the spring element has projecting catches, by means of which it is supported on associated lugs of one structural part. This results in the fastening system being automatically secured during the mounting operation.
Patent DE-3136092-A1 (DE)
Title: Verfahren zur herstellung von 2-(azomethin)-chinoxalin-1,4-dioxydderivaten und 2-((amino)-(hydroxy)-methyl)-chinoxalin-1,4-dioxydderivate
Inventor: BENKO PAL DR DIPL CHEM
IPC: C07D241/52
Filed: 1981-09-11
Abstract: Gegenstand der Erfindung ist ein Verfahren zur Herstellung von 2-(Azomethin)-chinoxalin-1,4-dioxydderivaten der allgemeinen Formel I, worin A die im Anspruch 1 angegebene Bedeutung hat, bei welchem 2-[(Amino)-(hydroxy)-methyl]-chinoxalin-1,4-dioxydderivate der allgemeinen Formel II, worin A wie im Anspruch 1 festgelegt ist, dehydratisiert werden. Gegenstand der Erfindung sind auch die Zwischenprodukte 2-[(Amino)-(hydroxy)-methyl]-chinoxalin-1,4-dioxydderivate derlgemeinen Formel II. Die Erfindung gestattet die einfache Herstellung der reinen 2-(Azomethin)-chinoxalin-1,4dioxydderivate in hohen Ausbeuten von nahezu 100% der Theorie.
Patent DE-3140656-A1 (DE)
Title: Arrangement for the closed-loop control of the air/fuel ratio of a combustion engine
Inventor: OHGAMI MASAAKI
IPC: F02D41/14
Filed: 1981-10-13
Abstract: An arrangement for the closed-loop control of the air/fuel ratio of an internal combustion engine has an emission control system with a catalytic three-way convertor for closed-loop control of the air/fuel ratio as a function of the operation of the engine. A throttle sensor for identifying the acceleration of the engine and a supply device with a predetermined voltage are provided. A feedback control circuit controls the air/fuel ratio to the stochiometric ratio in the normal operating state and stops the closed-loop control process if the acceleration of the engine has been identified by the throttle sensor. A first switch is actuated by the output signal of the throttle sensor in order to connect the output of the supply device to the input of the feedback control circuit when an acceleration is identified. A second circuit is actuated by the output signal of the throttle sensor in order to deactivate the feedback control circuit as a feedback controller, as a result of which the air/fuel ratio is closed-loop controlled by the output signal of the supply device with a predetermined voltage. <IMAGE>
Patent DE-3141393-A1 (DE)
Title: Pneumatic vehicle tyre
Inventor: TEN TIJE JOHAN A
IPC: B60C9/08
Filed: 1981-10-19
Abstract: Tubeless pneumatic vehicle tyre of radial design with rubberised metallic reinforcement members, in which in addition a protective layer made of textile fabric in a single or double cord is arranged between the inner layer which is slightly permeable to air and the metal carcass. The bead protection rubber strip has axial constriction points for ventilation of the bead. As a result, the passage of air from the inside of the tyre into the carcass as a result of diffusion is considerably reduced and separations between rubber and metal are avoided. The protective layer also serves to even out the arrangement of the metallic reinforcement members of the carcass and improves the durability whilst offering favourable material and manufacturing costs. <IMAGE>
Patent DE-3142859-A1 (DE)
Title: Device consisting of a model track and model vehicle
Inventor: WRIGLEY GORDON HOWARD
IPC: A63H18/14
Filed: 1981-10-29
Abstract: The invention contains a device consisting of a model track and model vehicle, characterised by a track which is formed on the upper wall of a hollow, elongate housing, the housing accommodating electrical drive units below the track, and these drive units bearing drive pins which project upwards through elongate slots (18) in the track and permit the attachment of a model vehicle, which itself has no drive. A vehicle is described which consists of a motorcycle with driver, a drive unit having a front drive pin and a rear drive pin, and the drive pins being connected to the articulated front fork of the motorcycle or to a pivotally mounted leg of the driver, as a result of which the action of the motorcyclist is simulated in extending one leg to stabilise the machine during tight cornering.
Patent DE-3143863-A1 (DE)
Title: Electric deep fat fryer
IPC: A47J37/12
Filed: 1981-11-05
Abstract: In an electric deep fat fryer having a pan-type container (10) which can be closed by a lid (13) and in which a frying basket (14) can be inserted, an electric heating device is connected to the container bottom (15) in a heat-transferring manner below said container bottom. For optimum utilisation of the heating capacity of this heating device, the heater (21), constructed in a known manner as an annular heating element, is inserted in an annular groove (25) curving into the interior of the container (10) starting from the underside of the container and arranged approximately in the central bottom region. Due to at least partial deformation regions of the container bottom (15), as is illustrated in Figure 1, the heater (21) is fixed to the annular groove (25) in such a way that the heater (21) makes contact without play with the container bottom (15). <IMAGE>
Patent DE-3147258-A1 (DE)
Title: Combination table brush and eraser
Inventor: BLOIER JUERGEN
IPC: B43L19/00
Filed: 1981-11-28
Abstract: The object of the invention is to combine a table brush and eraser in one appliance. As is known, in order to produce technical drawings, the latter are first drawn in pencil and then completed in ink. Subsequently, the drawing with the pencil lines is erased and brushed away. By means of a novel "table brush and eraser" appliance, which is described as follows: the shape of the brush handle must be curved (as shown in Figure 1), so that no erasure with the fingers takes place during erasure and brushing. On the back of the brush is a plug-in shoe to receive the eraser. The shape of the plug-in shoe is conical on three sides, while the fourth side is open. The eraser, which is also of conical design in the lower region, is pushed in from the open side. This novelty is used in engineering, architectural and drawing offices for erasing and brushing off drawings. <IMAGE>