baber/WOPTO huggingface dataset:
Patent DE-2517380-A1 (DE)
Title: Foamed ceramic bodies contg silicon nitride or carbide - produced by nitriding or carburising foamed silicon bodies
Inventor: SUESSMUTH GODEHARD DIPL ING
IPC: C04B38/00
Filed: 1975-04-19
Abstract: Foamed silicon-contg. ceramic bodies are produced by treating fine silicon powder (63 mu) with a diol. NaOH soln. (pref. 0.3-5% soln.); pouring the resulting stable foam into moulds; and firing in a N2-contg. atmos. to produce Si3N4-contg. bodies, or in a carburising atmos. to produce SiC bodies. These bodies can be used as heat- and sound-inulators, catalyst carriers, filters and heat-exchange elements. They can withstand very high temps. and thermal shocks. They are resistant to attack by most of aggressive media. The prodn. is relatively inexpensive. The cell structure can be easily controlled by properly adjusting the amt. of NaOH, water, silicon particle size, and the reaction time between the mixing and drying and, if necessary, adding foaming-promoting or -suppressing agents.
Patent DE-2527545-A1 (DE)
Title: Antenna screen for slot antennae - consists of injection moulded plastic part with antenna opening
Inventor: GUNNARSSON EBBE KARL JOHAN
IPC: H01Q13/18
Filed: 1975-06-20
Abstract: The plastic component of the antenna screen has a longitudinal channel (15) for the antenna Lecher wires (30). The plastic part has lateral walls (12, 13) parallel to the channel (15), diverging towards the antenna opening. A through slot (16, 17) is provided in each antenna part between the channel (15) and the parallel antenna opening edge (10, 11). Inner and outer surfaces of the antenna screen and of the slots have a metal coat except the edges (10, 11). Each longitudinal slot (16, 17) is bridged by a metal rail (18, 19).
Patent DE-2527546-A1 (DE)
Title: Rapid setting thixotropic cements and mortars - contg. water soluble thixotropic agent, carbonate ion source, an aluminate and aluminium oxide
IPC: C04B28/02
Filed: 1975-06-20
Abstract: Additives to hydraulic cement to accelerate the onset of setting comprise (a) a cpd. to promote thixotropy in the mortar or cement, (b) a source of carbonate ions, (c) an aluminate and (d) an aluminium oxide. Promotes rapid onset of setting (e.g. within 1 hour) and prevents cement and mortal flowing out of gaps e.g. in shuttering after pouring before setting has occurred. The additives are esp. useful for addn. to pumpable or spraying cement compsns.
Patent DE-2530101-A1 (DE)
Title: Fuel air mixture preparation system - has body between intake and exhaust filled with vaporising heat transfer commodity
Inventor: WILLENBOCKEL OTTO DR ING
IPC: F02M31/087
Filed: 1975-07-05
Abstract: The system prepares a fuel/air mixture to be delivered to an internal-combustion engine, having a heat-transfer device from the exhaust. This device has a hollow body (6), in contact with the mixture on one side and the exhaust on the other. This is filled with a heat-transmitting commodity, converted from the liquid to the vapourised state at engine operating temperature. It can be connected to a pressure-compensation vessel (7), and its contact surfaces (9, 10) can be shaped so as to increase heat transfer, typically being corrugated.
Patent DE-2531649-A1 (DE)
Title: Multi-purpose knock-down storage frames for home use - consist of support plates held together by variety of support elements
Inventor: LANG FRANZ JOSEF
IPC: A47B87/02
Filed: 1975-07-15
Abstract: The frame comprises a number of bearing plates (10) which are held one above the other by a number of support elements (12) which engage in sockets (24, 26) provided on the top and bottom of each bearing plate. These sockets are formed by slots (24, 26) defined in each corner of the top (14) of the bearing plate by the integral peripheral edge (16) together with the two short inner walls (20, 22) of the bearing plate (10). These slots open away from the bearing plate (10) parallel to the edge (16) at right angles to the surface of the plate (10) and its peripheral direction. The size of the slot in the peripheral direction is greater than the surface spacing between the two wall sections (16, and 20, 22).
Patent DE-2544252-A1 (DE)
Title: Pigmented polyamide moulding materials - which contain pigment as concentrate in polyamide incompatible polymer-give mouldings of improved strength
Inventor: TACKE PETER DIPL CHEM DR
IPC: C08L77/00
Filed: 1975-10-03
Abstract: Pigmented aliphatic polyamide moulding materials comprise (1) 70-99.9 wt. % polyamide and (2) 0.01-30 wt. % pigment concentrate. (2) consists of 2-60 wt. % pigment and 98-40 wt. % of a polymer incompatible with the polyamide. This polymer has structural elements of type(a) -O-, -COO-, -CONH-, -O.CO.HN- or NH.CO.NH- and/or functional side gps. of type (b) -COOR, -CO.NHI, -CN, -O.CO.R', -OR', -OH- or CH-CH- R = Na, K, Ca, Zn, H, or RH; R'=1-4C alkyl. With use of above concentrates, no transfer of pigment from concentrate to polyamide occurs either in working up or (injecting) moulding and adverse effect on mechanical properties thus prevented. Nylon 6 reinforced with 30.7 wt. % glass fibres gave an impact strength on injection mouldings of 59.7 KJ/m2. When pigmented with TiO2 (1.0%) the figure fell to 34.6 KJ/m2 and using polyurethane-TiO2 paste (70:30), the figure was increased to 48.8. KJ/m2.
Patent DE-2547317-A1 (DE)
Title: Electrical distribution panel for toy - has flanged sockets soldered into stamped holes in metal sheet with location tabs
IPC: A63H33/26
Filed: 1975-10-22
Abstract: The electrical distribution panel for a toy consists of a row of flanged metal sockets sunk into the edge of a metal plate, which itself is sandwiched between two sheets of insulating material. The spaces for the sockets are stamped out, and the flanged sockets are pushed into the spaces and soldered to the metal. The space stamped out for a socket is not cut straight across at the bottom, but is left with a large triangular tab projecting into it. This tab fits inside the open-ended socket, and serves to locate it as it is pushed into place - and also to locate the connecting plug that will later be pushed into the socket.
Patent DE-2549593-A1 (DE)
Title: Switching contact support for interrupter - has housing with open lateral surface carrying all moving contacts in slide
Inventor: VESPERINAS ROY ANTONIO
IPC: H01H15/06
Filed: 1975-11-05
Abstract: The contact holder forms a part of an interrupting or change-over switch and has a housing (10), on whose open side surface are mounted all moving contacts (15). These moving contacts are mounted in recesses (13) on a contact slider (11), which moves in the housing when actuated. Preferably the contact holder can be secured to any switch having a stationary contact in such manner that the moving contacts are sliding along the fixed contact of the switch, against which they are fixed via the open side of the housing. The slider recesses are separated by partitions (14). The slider may be provided with a locking system whose bolt may be fitted with a sensor guided in a heart-shaped cam in the housing lid (17).
Patent DE-2558332-A1 (DE)
Title: Wall for motor vehicle construction - has plate or grid fixed to wall to provide stiffening
Inventor: BURST HERMANN DIPL ING
IPC: B62D21/17
Filed: 1975-12-23
Abstract: The wall has a reinforcement on one side and is intended for use on vehicle doors, roofs and boots. Buckling between stiffeners is avoided without increase in weight and size. The strengthening to prevent buckling is a flat surface (5) fixed to the side of the wall (2) by a self adhesive. The plate has a number of perforations (7) or can be a metal or plastic grid. It is corrosion protected and can be fixed using underseal. It can have a flexible filler so that there is a cushioned outer surface.
Patent DE-2615920-A1 (DE)
Title: Plate stamping a semicircular strip as two arcs joined by a V:shape - reshaped to give several arcs joined by V:shaped sections
Inventor: SCHEUFLER ROLAND
IPC: F16C33/14
Filed: 1976-04-10
Abstract: Parent patent is for a stamping plate which produce a starting disc in the form of two circular arcs joined by a V-shaped section: in use, the arms of the V are brought together so that the circular arcs combine to form a semi-circle. By this patent, the stamping plate can take form of several circular arcs (not necessarily just two) joined to each other by V-shaped sections. The V is pref. modified slightly to avoid having a sharp angle between its sides.
Patent DE-2627551-A1 (DE)
Title: Wideband matching transformer for HF bridge circuits - has three windings in two parallel helical grooves, with leads in at least one axial wire channel
Inventor: GROEBNER GERHARD DIPL ING
IPC: H01F5/02
Filed: 1976-06-19
Abstract: Transformer matches amplifier output and input stages to a cable. It consists of a cylindrical coil former with three separate windings in helical grooves and of a ferrite core. The grooves (R1, R2) have two starts run parallel to each other and have different depth. The first winding (w1) consists of n individual winding parts connected in parallel and placed at the bottom of the deeper groove (R1). The second winding (W2) is placed above the first, so that W2=nwl. The third winding (w3) is placed in the second groove (R2), and leads to winding (w1-w3) lie in at least one axial wire channel (D).
Patent DE-2630432-A1 (DE)
Title: High gain switching and detection element for smoke detectors - uses FET which only conducts when voltage detected corresponds to minimal quantity of combustion products
Inventor: SALEM ROBERT JOSEPH
IPC: H01H35/00
Filed: 1976-07-07
Abstract: A high gain switching and detection element for smoke detectors has a F.E.T. whose gate and source are connected to the voltage detection circuit of the measuring chamber. The F.E.T. (80) is chosen so that it only conducts when the detected voltage corresponds to at least a predetermined minimal quantity of airborne combustion products in the chamber (70). The element has also several carcade connected normally non conducting electronic switches (86-90). The first switch (86) being connected to the F.E.T. (80) so that it conducts each time the F.E.T. (80) conducts. All the other carcaded switches being connected to the first so that they conduct when it conducts. The last of these switches (90) is connected to an alarm device (92) which triggers an alarm when the last switch conducts.
Patent DE-2634215-A1 (DE)
Title: Safety housing for vehicle wing mirror - has U=shaped reinforcement in moulded back to enclose mounting clamps
IPC: B60R1/06
Filed: 1976-07-30
Abstract: The safety wing mirror has a thin plastic moulding as its housing, with a profiled opening to accommodate the mirror and a moulded recess (11) on the back in which the fitting clamps are located. The back has no protruding clamps giving less injury risk. The mirror stalk (8) is clamped in a circular clip with the inside of the moulding having a U-shaped reinforcement to prevent the clip bolt (18) from tearing the plastic. A simple and economic housing is obtained, with streamlined shaped.
Patent DE-2638320-A1 (DE)
Title: Damping system for linearly moving machine parts - has damping cylinders linked by geared crank pins with phase shift
Inventor: SCHNETZ ALBERT
IPC: E05F3/04
Filed: 1976-08-25
Abstract: The damping arrangement is used for damping or regulating the traveling speed of heavy moving machine components or sliding door travelling on linear path. The travelling speed is relatively simple regulated. The two crank sides (17, 19) which are shifted relative to each other by ninety degrees are connected by their crank pins and piston rods (13, 14) to conventional displacement damping cylinder (11, 12). The force generated by the movements is applied to one of the crank devices. The crankshaft can be coupled by gear wheels. The crankshaft can be also driven by a toothed rack or a sprocket wheel.
Patent DE-2640177-A1 (DE)
Title: Power station cooling tower - has air supported structure or balloon as relatively movable flue sheath
Inventor: SONNENSCHEIN HANS DR ING
IPC: F28B1/06
Filed: 1976-09-07
Abstract: The colling tower, esp. for a large-scale power station, comprises a flue sheath unit (1) in the form of an air-supported hanger-type structure or captive balloon, with a flow channel passing through it from bottom to top. If necessary, this is assembled from individual elements. It is displaceable relative to the heat exchangers (8) which are on a stationary mounting, being movable and/or adjustable for slope or height, on flexible connecting (4) and sealing elements, or other peripheral bonds. It may be partially or wholly fitted for filling with hot air, or other light gas.
Patent DE-2644256-A1 (DE)
Title: Resistive system with voltage dependent resistors - uses PTC resistive material to compensate NTC of voltage dependent resistors
Inventor: SCHERING JOHANN
IPC: H01C7/12
Filed: 1976-09-28
Abstract: The overvoltage preventing resistive system has voltage dependent NTC resistors (10) whose coefficient is fully or partly compensated by PTC resistive material (11). This compensation is provided by series connection of at least one PTC resistor. The voltage dependent resistors are made of a mixture of substances, one being a normal resistive material and the other one having a positive temperature coefficient. Preferably the different resistive material are mixed in such proportion that a considerable drop of resistive value occurs on exceeding of a given temp. threshold. Typically the voltage dependent resistors are made of zinc oxide and dopants, while titanium dioxide or a titanate are used for compensation of the temp. coefficients.
Patent DE-2650714-A1 (DE)
Title: Polychloroprene prepn. without popcorn formation - by free radical aqueous emulsion polymerisation in specific reactor
Inventor: PETTELKAU HANS-JUERGEN DR
IPC: B01F7/02
Filed: 1976-11-05
Abstract: Chloroprene is polymerised in aq. emulsion using free radical initiators and opt. polymerisation inhibitors. Polymerisation is effected in a closed vertical cylindrical reactor having a length/dia. ratio of 2-3.1, with round corners having a smooth surface and free of incorporated parts (e.g. stream breakers). The reactor is surrounded by a heating and cooling jacket and is provided with one or more propeller stirrers having 2-5, pref. 3-4, blades on their axis, the stirrers being inclined at an angle of 0-45 degrees, pref. 5-45 degrees to the vertical. The stirrers opt. rotate periodically right and left and one stirrer is located in the lower third of the reactor enclosure. During polymerisation the reactor is completely full and its contents are mixed with a recycled reaction mixt. amounting to 5-20 pref. 10-15 m3/min/m2 vol. of reactor. Process is pref. effected continuously using a series of reactors. Formation of popcorn is avoided as well as sedimentation of the emulsion. The process can thus be effected without interruption for a long time without intermediate cleaning.
Patent DE-2701746-A1 (DE)
Title: Cutlery washing machine - has cutlery baskets sliding in on rollers with locking mechanism
Inventor: REHBERG DIETRICH
IPC: A47L15/50
Filed: 1977-01-18
Abstract: The cutlery washing machine is provided with at least one cutlery basket (14) which may be pulled out along horizontal guide rails provided with rollers (19). If there is more than one basket they are introduced into the machine one behind the other. The basket locks into position in the machine by a gear system (22 & 25) that engages the rollers (19).
Patent DE-2710791-A1 (DE)
Title: Electronic components unsoldering device - has bath filled with hot liq. whose level is raised to melt circuit boards solder points
Inventor: DEDERER GUENTER ING GRAD
IPC: B23K3/06
Filed: 1977-03-11
Abstract: the desoldering device, for electronic components, consists of a bath (6) of liquid heated to above the melting point of solder and closed by a top cover. The cover has holes through which the solder points on the underside of the circuit board are accessible to the liquid when the liquid level is raised. A plunger (7) raises the level of the liquid and the solder melts. The level of the liquid is lowered and gas injected above the circuit board to force the molten solder down through the holes in the board into the liquid. The components can then be removed.
Patent DE-2713645-A1 (DE)
Title: Circuit testing battery charge condition - uses diode indicators for small weight and vol. with successive diodes extinguished as battery level falls
Inventor: ULRICH HORST-GUENTER DR ING
IPC: G01R31/36
Filed: 1977-03-28
Abstract: A circuit testing the charge condition of batteries is designed for partic. simple determination of the battery charge and detection of when the battery voltage falls below the min. permissible level. The circuit can be used in small devices. Diode indicators are used to indicate the charge condition. As the battery charge falls the diodes are extinguished one at a time. A further diode is illuminated when the voltage falls below the permitted level. The charge indicating diodes are switched in circuit only on test, but the further diode is used when the battery is loaded.
Patent DE-2714020-A1 (DE)
Inventor: BEITER WERNER
IPC: F16H55/14
Filed: 1977-03-30
Abstract: In many precision engineering applications, silent running of gear mechanisms is striven for. Difficulties are encountered in particular in stepwise driving due to the play which is required when the gearwheels are engaged in one another. The invention provides a gearwheel which is suitable for transmitting small torques and makes the production of a silent gear mechanism possible. This plastic gearwheel is composed of an inner pinion (10) and an outer gear rim (12) connected thereto by spiralling arms (16). By this means, a very soft spring action of the outer gear rim (12) is achieved, this permitting play-free and hence silent engagement in the said gear rim. Despite the long, thin arms, production of this gearwheel in one piece by injection moulding is possible in that in the centre of the said arms a thickened portion (24) is provided, in the region of which the injection mould is vented. <IMAGE>
Patent DE-2716043-A1 (DE)
Title: Radio or TV receiver system with time display - receives time signals from official time transmitter and incorporates battery driven clock
Inventor: FAHN JOSEF ING GRAD
IPC: H04N5/445
Filed: 1977-04-09
Abstract: The radio or TV receiver (100) includes a time display. It has an internal receiver tuned to the frequency of signals sent by an official time transmitter and it is provided with a decoder coupled to a display of, in the case of a TV receiver, to a circuit that makes the time visible on the screen. A battery-drive clock may be incorporated that is driven by the signals received from the time transmitter. The clock may be a quartz crystal digital type.
Patent DE-2720142-A1 (DE)
Title: Heat exchanger of steel tubes in metal block - has diffusion layer formed by cooling melt under pressure
Inventor: GRAF WALTER
IPC: B23P15/26
Filed: 1977-05-05
Abstract: In the mfr. of a heat exchanger consisting of separate metal pipes enclosed in a block of good heat-conducting metal, esp. a light metal such as Al, the problem that the light metal when brought into contact in the molten state with the metal tubes does not form a diffusion layer, is overcome. The formation of gaps and cavities destroying the conductivity between the tubes and the block is prevented by casting the good conducting metal, without pressure into a heated, robust mould in which the metal tubes have been set. A load of at least 1200 bar is then applied to the molten metal until it has completely hardened off.
Patent DE-2721813-A1 (DE)
Title: Insulation resistance measurement in networks with rectifiers - uses current from DC source passed through network insulation
Inventor: LEBEDEV VLADIMIR SERGEEVITSCH
IPC: G01R27/18
Filed: 1977-05-13
Abstract: A da d.c. voltage component between a phase and earth is separated. The effect of the d.c. voltage component on the measurement current is compensated. Then the measurement current is passed from the d.c. voltage source through the network insulation resistance. The d.c. component of the measurement current is separated and the equivalent resistance R is calculated from R = (U/I) - r, where U is the voltage of the d.c. voltage source, r is the total resistance in the d.c. voltage source circuit, and I the d.c. current component in the d.c. voltage source circuit. A control system (1) is directly connected to a switching system (2).
Patent DE-2734363-A1 (DE)
Title: Diazo printing from electrophotographic original - using intermediate transfer sheet to carry temporary unfixed electrostatic image
Inventor: TANAKA SUSUMU
IPC: G03G15/18
Filed: 1977-07-29
Abstract: Image reprodn. on a light-sensitive diazo sheet comprises forming an electrostatic latent image on an electro-light-sensitive support; transferring this image to an intermediate transfer medium having a light transmitting characteristic; developing the latent image on the intermediate transfer medium to give a visible image, contacting this medium and image with the light-sensitive diazo support and illuminating the diazo support through the intermediate transfer medium; sepg. the two sheets and developing the diazo support. The intermediate transfer medium pref. also comprises a dielectric layer, formed on a conducting layer. A diazo print can be obtained from an original produced by electrophotographic reproduction. The method also enables bulky original documents, such as a book, to be used for diazo printing.
Patent DE-2738249-A1 (DE)
Title: Starting current limiter for universal AC motor - has current limiting circuit with thyristor and transistor, blocked for period during each half-wave
Inventor: HORNUNG FRIEDRICH DIPL ING
IPC: H02P1/24
Filed: 1977-08-25
Abstract: A two-pole three-way switch is provided in the motor circuit. It breaks the motor circuit in its first position, and closes it in its second position through a current limiting circuit, and directly in its third position. The current limiting circuit(S) has a controllable semi-conductor rectifier(Th). A control circuit blocks the rectifier during each voltage half-wave at least up to the voltage maximum. The rectifier control lead is connected to the collector of a transistor(T). The collector is connected via a resistor(R1) to one of the switch terminals(A). The other terminal(B) is connected to the emitter of the transistor.
Patent DE-2739567-A1 (DE)
Title: Antiskid control for train wheels - has three threshold levels for optimum braking and traction
Inventor: AUCHMANN BERND ING
IPC: B60L3/10
Filed: 1977-09-02
Abstract: The antiskid control for a train has three slip levels. It operates with a proportionally increasing effect as the lower point is crossed and reaches maximum modulation at the upper point. A smooth braking control is thus achieved. The system is extended to incorporate the wheel spin during traction. The system copes with a wide range of rail grip conditions for maximum efficiency and safety.
Patent DE-2746250-A1 (DE)
Title: Latex particle agglutination immunoassay reagents - comprising particles coated with antibody, antigen or immunoglobulin substd. by 2,4-di:nitrophenol
Inventor: SOOTHILL JOHN FARRAR
IPC: G01N33/543
Filed: 1977-10-14
Abstract: Latex particles are coated with a 2,4-dinitrophenol (DNP)-substd. biologically active material (I), pref. an immunological complex component, esp. an antibody, antigen or immunoglobulin IgA or IgM. Prepn. is by substituting (I) with DNP before bonding to the particles. Also new is the direct latex particle agglutination assay of immune complexes and their components, by incubating the sample with latex particles coated with non-human IgM antibodies with reduced affinity towards the component of the complex. Used in assays utilising immunological latex particle agglutination, esp. for IgA and IgM immunoglobulins, viral, bacterial and food antigens and in assays using specific antibodies with reduced affinity to immune complex components. Electronic particle counters or visual evaluation can be used. Blood and urine samples may be analysed. A wider variety of materials (I) can be bonded to the particles than in previous methods, which were typically restricted to TgG only.