baber/WOPTO huggingface dataset:
Patent DE-3009090-A1 (DE)
Title: Control circuit for drill and suction device motors - uses comparator to operate triac in supply line to regulate start-up
Inventor: ECHTLER KARL DR
IPC: H02P1/58
Filed: 1980-03-10
Abstract: The circuit for limiting the starting current for two electric motors, e.g. the motor driving a drill and a second motor for a suction device, includes a transformer connected across the mains supply, followed by a full wave rectifier, smoothing capacitor and variable resistance to supply a reference current to a comparator. In one of the supply lines is a triac, preceded by the primary of a transformer for a full wave rectifier with an ohmic resistance across it. This supplies a signal corresponding to the motor current to the other input of the comparator. The output of the comparator is fed to a logic circuit followed by a control circuit with a control connection to the triac. The two motors are started one after the other, the starting current for one being higher than that for the other. The supply to the triac is reduced to a given value when the comparator has established a larger instantaneous value for this current during a certain period of time.
Patent DE-3015388-A1 (DE)
Title: Schiff's base cpds. useful in liq. crystal dielectric - are alkyl-cyclohexyl alkyl-, alkoxy or cyano-benzylidene aniline cpds.
Inventor: ROEMER MICHAEL DIPL ING DR
IPC: C07C255/61
Filed: 1980-04-22
Abstract: New Schiff's bases (I) have the formula (I) (in which X is -N:CH- or -CH:N-. R1 is 1-8C alkyl. R2 is 1-8C alkyl or alkoxy or CN). (I) are prepd. by condensing an aldehyde and an amine of formulae (II) and (III) (in which one of Z and Z' is -CHO and the other -NH2). (I) are specified for use as liquid crystal dielectrics for electro-optical displays. They have a nematic phase in the required temp. range and make short enough switching times possible at room temp.
Patent DE-3018179-A1 (DE)
Title: Two section condenser for heat pump - has cylinder divided by partition into two coil holding chambers having different temperatures
Inventor: BRANDES ERWIN
IPC: F25B39/04
Filed: 1980-05-12
Abstract: The condenser for a heat consists of a horizontal cylinder divided into an upper chamber (1) and lower chamber (2) by a horizontal partition (3). At the top is a connection (5) for entry of superheated heat exchange medium, and at the bottom is a connection (11) for delivering the condensed medium to the evaporator. Due to the partition, the temperature in the upper chamber is different from that in the lower chamber. The partition allows the set of tubes in the upper chamber to determine the temperature independently of the operation of the tubes in the lower chamber. The size of openings (8) through the partition can be controlled manually, mechanically or by an automatic control system to regulate the pressure of the medium inside the chambers.
Patent DE-3019441-A1 (DE)
Title: Light dome shell pieces cementing - involves interposed elastic profile with thin walled sections
Inventor: STOLBERG FRITZ R DIPL ING
IPC: E04D13/03
Filed: 1980-05-21
Abstract: The system is used for cementing shells of light domes to each other or to a mounting ring. Adequate provision is made for pronounced variations in heat expansion, with no danger of tearing, and durable retention is ensured, without involving costs of spring retention or screwing. An elastic profile unit with one or more thin-walled stem pieces, is fitted between the surface to be joined together. It is pref. also thin-walled in the area of adhesion to the parts being joined. It can be in the form of a single- or multi-chambered hollow profile, pref. with a stiffening profile piece inserted in at least one chamber; or with a Bingham fluid or powder filling in a chamber. It can be in the form of a film hinge. The cementing surfaces may be bevelled on its ends.
Patent DE-3022439-A1 (DE)
Title: Scaffolding vertical bar and strut connectors - are double sockets with bar ends inserted and have external strut attachments
Inventor: AST GERALD DIPL ING
IPC: E04G7/24
Filed: 1980-06-14
Abstract: Vertical bars are arranged together with connecting pieces, in conjunction with horizontal and/or diagonal struts, in a scaffolding framework. The connecting pieces (11) are double sleeve sockets. Ends of bars (10) can be plugged into them, and on the outside they have attachment elements (14) for fixture of struts. They can have an intermediate floor piece (12), with end faces of bars fitting full against it. Connecting pieces and bars can have components securing them against turning, working together. Connecting pieces may be rectangular or circular in cross-section, and can be bolts with a tilting lever mounted in a slot. Bars do not need fixing media for fitting detachable struts, and are simple, inexpensive and not weakened by holes.
Patent DE-3025842-A1 (DE)
Title: Cable joint with cable end clamps - provided by support blocks fitted to ends of splicing sleeve
Inventor: LAAR HANS ING GRAD
IPC: H02G1/14
Filed: 1980-07-08
Abstract: The cable splice has support blocks (1) clamping the cable ends (8) positioned within the cable sleeve. Each support block (1) has tension band (4) which can be clamped around the cable end (8) via two clamps (3) positioned between the latter and the support block (1). Axial rails (5) are secured to the support block (1) at angularly spaced points. Pref. the support block (1) has a variable inner width it can be made from a band material and it may have a C-shaped profile with a flange engaging the sealing element for the cable sleeve. The support blocks (1) allow the cable ends to be held in the required position before and after assembly of the splice.
Patent DE-3027779-A1 (DE)
Title: Therapeutic stepped bed universal hump - comprises two segments sliding together and lockable at desired height
Inventor: WURMBACH MANFRED
IPC: A61H1/02
Filed: 1980-07-23
Abstract: The universal hump is for therapy by the stepped-bed method, e.g. in treating spinal ailments. It comprises two segments (1,2) sliding together and apart, and lockable by means of bolts, screws etc. at the desired height. The top segment (2) can have a fully radiused leading edge formed by an upholstered cushion (4) and it can have a lever (5) mounted in it, while there can be a recess in the bottom segment (1).
Patent DE-3028793-A1 (DE)
Title: Buried insulated district heating pipes - have supply and return tubes superimposed vertically with horizontal supports attached to outer insulation
Inventor: STRICKRODT JOHANNES DIPL ING
IPC: F16L59/14
Filed: 1980-07-30
Abstract: The supply and return pipes (1,2) for a district heating system are buried in a trench below ground level with the return line (2) above the supply line (1). Both are formed by steel tubes and are enclosed in rectangular section outer tubes (1',2') each enclosed by an aluminium foil layer (3,4) to prevent emission of heat. Between them is a horizontal aluminium foil layer (10) also preventing heat emission. The whole is embedded in plastics foam insulating material (5) enclosed by a plastics casing (6) with a cover (8) overlapping a base (7), and welded together. The foam insulation is thicker above the pipes than below. The pipes are supported in the trench by horizontal side supports.
Patent DE-3035828-A1 (DE)
Title: Dust centrifugally removed from fumes in curved section - of conduit between furnace and filter or cooler
Inventor: MARGRAF ADOLF DIPL ING
IPC: F23J15/02
Filed: 1980-09-23
Abstract: Before furnace fumes charged with hot dust are fed to a filter housing or gas cooler, the coarser particles are removed centrifugally. A fume outlet pipe broadens as it descends and widens to form a slot of the length of the filter or cooler. From the slot the fumes pass round a downwardly directed bend for subjection to centrifugal force before rising towares the filter etc. Behind the bend in the flow direction and on its outer wall is an open dust-collecting channel from whose base the heavy dust particles are periodically extracted. Before finally entering the filter/cooler the fumes may pass through a rotary perforated drum partly filled with heavy balls etc. to agglomerate and remove any highly adhesive fine particles. For melting or combustion furnaces etc. The full length of filter or cooler is used, clogging by large particles is reduced, as is damage to filter material from large hot sparks.
Patent DE-3036310-A1 (DE)
Title: Solar collector panel mounted on roof or outside wall - has horizontal reflector and associated energy absorbing element screened from direct radiation
Inventor: REINKE FRITZ HERMANN
IPC: F24S23/00
Filed: 1980-09-26
Abstract: The panel for a house has a reflector extending across its fall width, that extends in a straight line horizontally, but is curved in the vertical direction. An energy absorbing element lies along the horizontal focus of the reflector, for receiving the reflected energy and pref, being screened from direct radiation. A transparent cover plate pref. protects the reflector and the energy absorbing element. Pref. several reflectors extend parallel to one another, the top lip of each screening the energy absorbing element associated with that above and mirrored on its rear to act as an auxiliary reflector. The panel provides heat for hot water or room heating.
Patent DE-3036563-A1 (DE)
Title: Water cooled multicylinder IC engine multipart exhaust manifold - has gaps between section ends, crossed by plug-in sleeves linking passages
Inventor: BUTSCHKAU HEINZ
IPC: F01N3/04
Filed: 1980-09-27
Abstract: The water-cooled multi-cylinder IC engine multi-part exhaust manifold comprises several sections, each connected to several cylinders, capable of being joined together. Each has an annular water space bounded by the gas-retaining inner- and an enveloping outer wall. Both inner (3,3') and outer (4,4') walls of the individual sections (1,2) are joined by plug-in type flexible connectors, arranged to leave a gap (10) between the section end faces (8,9). Pref. there are two separate, adjacent, plug-and-socket sleeve type, connectors (6,7) of which one (7) links the annular spaces (5,5'). Cylindrical recesses (11,11'; 12,12') in the section ends accommodate the sleeves, sealing radially but axially movable.
Patent DE-3037123-A1 (DE)
Title: Winding connection between electrolytic capacitors and contacts - which are pressure welded along length of electrode foil before winding commences
Inventor: SCHWEIZER K H
IPC: H01G9/00
Filed: 1980-10-01
Abstract: The method is for winding electrolytic capacitors, using an anode-paper-cathode-paper construction would onto a former and with at least two connections per anode or cathode lengthways electrode. Before winding commences, or during one or two interruptions in the winding process, all the required anode and cathode contact varies (5,6,7,8) are cold pressure welded onto the anode and cathode foils (2,4) of the anode-paper (3) cathode-paper (3) format around onto the former (1).
Patent DE-3037503-A1 (DE)
Title: AC=DC converter for electric vehicle - has string of resistors connected to DC bus=bar and switched in whilst motor is acting as generator during braking
Inventor: KINOSHITA SHIGENORI
IPC: H02M7/48
Filed: 1980-10-03
Abstract: The converter consists of several mutually-isolated converter units supplied from an ac source and connected in series with one another at their dc outputs and connected to a dc busbar to which the vehicle's drive motor is connected. When the vehicle is braked, the motor returns power to the supply. A series string of resistors (81-84) is connected to the dc busbar and absorbs part of the power being returned to the supply when the converter is in its converting mode. The resistors are shunted out by switches (91-94). A thyristor (7) is connected in series with the resistors. The advantage lies in adequate braking force and in avoiding supplying the ac supply with unacceptably large harmonic currents.
Patent DE-3044349-A1 (DE)
Title: Front cover for loudspeaker casing - has cloth cover on frame comprising perforated metal profile to eliminate reflection
Inventor: REUM-MUEHLING PETRA DIPL KFM
IPC: H04R1/02
Filed: 1980-11-25
Abstract: The front cover has a frame (1) that fits onto the front of the casing and carries cladding (e.g. cloth). The cladding completely covers the front panel and its loudspeaker openings and is transparent to sound. The frame has sound-outlet holes in it and is made of a metal profile. The frame has a sloping main face (10) in which the sound-outlet holes are situated. The sound-outlet holes may also be situated in other parts of the frame. The frame is held at its corners. The advantage lies in sound not being reflected from the frame and interfering with the quality of reproduction.
Patent DE-3100856-A1 (DE)
Inventor: STAHLHOFEN PAUL
IPC: G03C1/56
Filed: 1981-01-14
Abstract: A light-sensitive mixture comprising a light-sensitive naphthoquinone-diazide-sulfonic acid ester corresponding to the formula:    <IMAGE>  I  wherein D represents a 1,2-naphthoquinone-2-diazide-5-sulfonyl or -4-sulfonyl radical; R1, R2, R3, R1', R2' and R3' each represent hydrogen, halogen, alkyl groups having 1 to 4 carbon atoms or radicals of the formula DO and n represents an integer from 2 to 18; not more than three DO radicals in total being present on one benzene ring. The mixture is useful for preparing printing plates or photoresists.
Patent DE-3105866-A1 (DE)
Title: Brake monitoring lights for motor vehicles
Inventor: HUND GUENTHER DIPL ING
IPC: B60Q11/00
Filed: 1981-02-18
Abstract: To permit constant monitoring of the operational capability of the brake lights on motor vehicles when the foot brake is actuated, an LED (light-emitting diode) is installed in the dashboard at a visible point, which LED lights up with the brake lights located on the motor vehicle. When one or both brake lights fail, the driver of the motor vehicle notices the failure of the LEDs to light up, from which a defect in one or both brake lights is concluded. No change is made to the existing electrical system in the motor vehicle. A cable of the diameter of 0.75 mm starting from the brake light switch is wound around a solenoid switch seven times and connected onto the brake lights. The contacts of the solenoid switch are connected at one end to the brake light switch present in the passenger car (line to the brake lights) and at the other end to an LED via a 1 kiloohm resistor. When the brake light switch is operated, the solenoid switch (reed contact) closes so that the current flows to the monitoring light.
Patent DE-3109019-A1 (DE)
Title: Spacers
Inventor: UTH GEB SCHNEIDER
IPC: E04C5/20
Filed: 1981-03-10
Abstract: The difficulty with exposed concrete is that the spacers "press through", i.e. dark patches appear on the top. In order to prevent such rough patches and to ensure that a flawless top remains, a panel, e.g. consisting of concrete, fibre-reinforced concrete, asbestos concrete or the like, is assigned to a metallic spacer strip, i.e. said panel bears the metallic spacer strip, with the result that the panel is located between the top and metallic spacer strip and forms a spacing of, for example, 1 to 2 cm. <IMAGE>
Patent DE-3111693-A1 (DE)
Title: Method and apparatus for producing spray-transfer electrodes
Inventor: STEUERNAGEL WALTER
IPC: B03C3/41
Filed: 1981-03-25
Abstract: The invention relates to a method and an apparatus for producing spray-transfer electrodes with strip-shaped cross-section and wire-shaped pins arranged transversely thereon. According to the invention, provision is made to unwind the strip material from a coil and to straighten it and cut it to length, to unwind a multiplicity of wires perpendicularly to the elongated strip from coils arranged at a distance from one another and to straighten them and feed them across the strip against a stop, and to join the wires to the strip by spot welding and then cut them to length. The apparatus, according to Fig. 1, has an elongated strip rest (1) which serves to receive the strip material (16), which is fed from the coil (2) through the roller straightening device (3) by means of drive (4) up against the stop (17). Furthermore, the adjustable stop strip (5) for the wire material from which the pins are produced can be recognised. Spot-welding devices (9) which can be moved vertically by a drive (not shown) and have welding electrodes (10) are arranged parallel to the strip rest (1). The distance between the spot-welding devices (9) can be varied. Furthermore, the apparatus includes cutting devices (11 and 12) for the strip or wire material (16) as well as an unloading device (13) for the finished spray-transfer electrodes. Presses (14 and 15) are arranged at the left-hand and right-hand end of the apparatus. <IMAGE>
Patent DE-3111835-A1 (DE)
Title: Stop valve made of a material which is difficult to work
Inventor: DAUME ACHIM ING GRAD
IPC: F16K1/36
Filed: 1981-03-26
Abstract: Valves, which are subjected to heavy wear during operation, are plated with highly resistant and/or corrosion-resistant material to achieve high service lives. Moreover, valves are known which are fully manufactured from a ceramic or other wear-resistant material. Their hardness makes these materials difficult to work during shaping of the valves, however. In order to circumvent the above disadvantages, it is proposed according to the invention to compose valves with flow restrictors from individual disc-shaped parts which are releasably connected to one another. The outer shape of the flow-restricting body can therefore be made to approximate the desired shape by gradating the individual diameters of the parts. Subsequent working is made unnecessary or is considerably reduced.
Patent DE-3120407-A1 (DE)
Title: Damper for damping torsional vibrations by fluid damping
Inventor: HACKFORTH JOSEF
IPC: F16D3/80
Filed: 1981-05-22
Abstract: This damper contains a first damper part designed as an outer casing (2) and, within the casing, a second damper part designed as a hub (1). The two parts can be rotated to a limited extent relative to the casing (2) and projecting from them are radial webs (13) which extend as far as the inner circumferential surface of the casing (2) and rest against the latter in a fluidtight manner. The gaps between adjacent pairs of webs (13) of the hub (1) are subdivided by respective radial webs (14) connected to the casing (2), the radial webs (14) resting in a fluid tight manner against the hub (1) and sector-shaped chambers (16, 17) being formed by wall plates (3, 4) resting against the ends of the webs (13, 14). The chambers are filled with an initial charge of fluid and, when relative movements occur, fluid is displaced via conduits from the chambers in which a pressure build-up is occurring into the chambers in which a pressure reduction is occurring. According to the invention, all the chambers (16 or 17) in which a pressure build-up is occurring are connected to a common manifold (19 or 21) and all the chambers (16 or 17) in which a pressure reduction is occurring are connected to another common manifold (19 or 21), and the two manifolds are connected to one another by a conduit (12) which causes flow losses. <IMAGE>
Patent DE-3126596-A1 (DE)
Title: Heat collector
IPC: F24S10/75
Filed: 1981-07-06
Abstract: A heat collector, preferably for a flat roof or for a facade, for recovering heat energy from insolation and environmental heat, is designed with tubular support profiles which have insertion openings adapted to the heat-collection pipes and make possible mounting of the heat-collection pipes at a given predetermined angle to the longitudinal direction of the tubular support profiles. With the aid of trapezoidal support profiles, the tubular support profiles are either erected on a flat roof or fastened to a facade.
Patent DE-3127635-A1 (DE)
Title: Device with heat pump for obtaining solar heat from ambient air
Inventor: GABLER MARTIN
IPC: F24D11/02
Filed: 1981-07-13
Abstract: A device with a heat pump is proposed, with which solar heat can be obtained from ambient air for heating service water and heating water. In the known devices of this type, the problem of defrosting the evaporator after ice formation is not satisfactorily solved. The aim of the invention is to bring about the defrosting process economically in terms of energy and with lower constructional outlay than in the case of known devices. This is achieved by a special assembly of hot-water accumulators with a housing and by an air-duct guide and design adapted thereto.
Patent DE-3128061-A1 (DE)
Title: Method for locating faults on electrical conductors
Inventor: SCHACHT MANFRED DIPL ING
IPC: G01R31/08
Filed: 1981-07-16
Abstract: In a fault-locating method for electrical cables, a generated flashover is detected via a magnetic pickup and a sound pickup, a transit-time measurement being performed via a time-measuring device, taking into consideration the different velocities of propagation of the magnetic wave and the sound wave. Since the transit time for the magnetic wave is negligible, it is possible to derive a measure of the distance to the flashover point at the fault location from the transit-time difference.
Patent DE-3134135-A1 (DE)
Title: Printed circuit board
Inventor: MAGIERA MICHAEL
IPC: H05K3/34
Filed: 1981-08-28
Abstract: A printed circuit board (1) which has conductor tracks (2, 3, 4, 5) on both sides is proposed, in the case of which specific conductor tracks (2, 4) on one surface side are connected to conductor tracks (3, 5) on the other surface side via through-plated holes. The through-plated holes consist of through-plated holes which are in each case filled with a part in the form of wire and with soft solder. In order to form in each case two mutually directly adjacent through-plated holes, a very high value resistor (6), which is provided with two ends in the form of wires, has these ends, which are in the form of wires, plugged through the associated through-plated holes (7, 8). <IMAGE>
Patent DE-3138234-A1 (DE)
Title: Process for metallising polyacetal resin mouldings
Inventor: KASUGA TAKUZO
IPC: C23C18/28
Filed: 1981-09-25
Abstract: A process for metallising polyacetal resin mouldings is described, in which a catalyst, which has the property of accelerating non-electrolytic metallisation, is allowed to act on a polyacetal resin moulding and the latter is then subjected to non-electrolytic metallisation and then to electrical metallisation, which process is characterised in that, after the stage in which the catalyst was allowed to act on the moulding, the moulding is subjected to a heat treatment at a temperature from 80 to 155 DEG C.
Patent DE-3140289-A1 (DE)
Title: Protection device for shoes
Inventor: STROEBELE HUBERT
IPC: A43B23/30
Filed: 1981-10-10
Abstract: A protection device for shoes consists of a shell-like cap (10) and a bottom (16), and two spring arms (18) which face forwards and upwards and act in a clasp-like manner in order to hold the shell (10) on a shoe. The protection device prevents the scraping off and roughening of the leather upper in the heel region of a shoe and of the shoe heel by the constant rubbing of the shoes of a motor vehicle driver on the floor mat of the passenger space. <IMAGE>
Patent DE-3140436-A1 (DE)
Title: Digging tooth
Inventor: HAHN FREDERICK CHARLES
IPC: E02F9/28
Filed: 1981-10-12
Abstract: The invention relates to a digging tooth in which the connection between the tip and the connecting element is produced by an external locking means which produces compressive loads from forces which pull down the tip and which in themselves ought to produce shearing loads.