baber/WOPTO huggingface dataset:
Patent DE-2347696-A1 (DE)
Title: Subscriber connection cct. for telephone exchange - automatically adjusts current strength to compensate for line length
Inventor: HOFMEIER HERIBERT
IPC: H04M19/00
Filed: 1973-09-21
Abstract: In order to adjust the line current, one line wire is connected through the emitter-collector path of a transistor, and through a variable resistor to a supply source. The transistor is controlled by a differential amplifier, to which are applied the voltage across the variable resistor as the actual voltage, and a reference voltage. Dialling signals are transmitted from the subscriber line to the exchange through an optoelectronic coupling unit between the a-wire and a control wire leading to the exchange. A current source is provided, electrically separated from the subscriber line, and a first pulse generator, whose output voltage is rectified.
Patent DE-2349053-A1 (DE)
Title: 2-(2-Hydroximinoformylthio-phenyl)-1,3-diazacycloalkene salts - prepd. by reacting benzothietane-2-spiro-2'-(1',3'-diaza-cycloalkanes) with hydroxamic acid chlorides
Inventor: HAGEN HELMUT DIPL ING DR
IPC: C07D239/06
Filed: 1973-09-29
Abstract: Salts of formula (I) (where R1 is H, halogen, NO2 or alkyl; Y is -CH2CH2-or -CH2CH2CH2- in which one or more of the H-atoms can be replaced by a 1-4 C alkyl residue; R2 is mono- or polynuclear carboncyclic aryl or benozyl which may be mono- or polysubstd., or a heterocyclic residue; and X circled negative is a monovalent anion) and the corresp. free bases, e.g. 2-/2-(alpha-hydroximinobenzoylthio)-phenyl/-2-imidazoline hydrochloride, are new cpds. which may be prepd. by reacting a spiro cpd. of formula (II) with a hydroxamic acid chloride of the formula R2-CCl=N-OH (III) and opt. converting the acid addn. salt obtd. into the free base. (I) are useful as pharmaceuticals, hypertensive, sympathomimetic, CNS, anti-inflammatory and diuretic effects have been observed in pharmacological screening. (I) are also useful as textile adjuvants, e.g. as anistatic agents, as well as rubber additives, e.g. as vulcanization accelerators, (I) are also useful as intermediates for biologically active cpds.; thus, in the presence of acidic dehydrating agents they may be cyclized to 1,3-diazacycloalkeno/1,2-d/-benzo/f/-1,3,4-thiadiazepines.
Patent DE-2352032-A1 (DE)
Title: Plug connector for I.C. engine ignition - has insulating plug body surrounding conductor and coupled contacts
Inventor: BRETTING KLAUS
IPC: H01R13/52
Filed: 1973-10-17
Abstract: The plug connector is intended for motor vehicle application and consists of a body injection moulded onto an insulated electric cable. The plug body of flexible insulating material surrounds the cable and the connected contact elements and has an aperture retaining the fixed parts of the internal combustion engine ignition system. The aperture is of such size as to ensure gas- and water-tight connection. Extensions on the plug body permit its lifting from one side when inserted onto the fixed ignition parts. Preferably the extensions are in the form of radially outwards protruding lugs. They may be in the form of strips or ribs between the lower and upper plug body parts. Tensile strength inserts may provide reinforcement for the lugs.
Patent DE-2363875-A1 (DE)
Title: Four-stroke engine with ring inlet valve - tangential slots in valve sitting control input
Inventor: FRACKE KARL DR
IPC: F02B17/00
Filed: 1973-12-21
Abstract: The four-stroke engine, especially of the internal reciprocating combustion type using the Otto method, has a ring inlet valve with tangential channels at the lower end of the round combustion chamber which produce an intensive, stable eddy current during the suction stroke. This aids the combustion and improves the mixture stratification, loading the combustion chamber with the right amounts of air and rich mixture with the result that a high thermal efficiency is reached with a small emission of potentially damaging substances. A plate valve at the top end of the round combustion chamber controls the outlet, while the ring inlet valve controls the input.
Patent DE-2363919-A1 (DE)
Title: Application of reinforcing sheath to thermoplastic tube - by widening out cold sheath and pushing onto tube end
Inventor: SPLITT HANS-RICHARD
IPC: B29C63/18
Filed: 1973-12-19
Abstract: Reinforcing sheath is applied to the end of a thermoplastic tube whose outer diameter is the same or slightly greater than the inner diameter of the sheath by continuously widening out the sheath in the cold or slightly warm state, and simultaneously pushing the widened-out sheath over the end of the tube. No deformation or other damage to either the sheath or the tube occurs.
Patent DE-2365062-A1 (DE)
Title: Reducing air pollution from IC engines - by recycle of light fractions to engine and sepn. of heavy fractions
Inventor: BECKER FOLKE
IPC: F02M26/15
Filed: 1973-12-28
Abstract: Reducing air pollution from an IC engine, in which the lighter fraction of the combustion prods. is sepd. from the heavier fraction and introduced into the engine air intake. The heavier fraction passes through perforated conduits located within and adjacent the bottom of a closed receptacle contg a treatment mixt. of triethylolamine, fullers earth and ethylene glycol, the level of which is above the perforated conduits. Cooling conduits extends through the receptacle and baffles are provided transverse the receptacle above the mixt. A gas outlet is situated above the baffles.
Patent DE-2406424-A1 (DE)
Title: Flexible light-conductor for transmitting radn - of liq-filled plastic hose pref. of tetrafluoroethylene-hexafluoropropylene copolymer
Inventor: NATH GUENTHER DR
IPC: G02B6/26
Filed: 1974-02-11
Abstract: Flexible light conductor for transferring intensive radiation in near UV, and visible spectral range, i.e., wave length 0.28-0.7mu, consists of a light-conductive liquid in a flexible plastic hose, sealed tightly at both ends by 2 mainly cylindrical windows of dielectrical matl. The flexible plastic hose consists of a polymer built up entirely of C and F. The light-conductive liquid is either an inorg. aq. ionic soln. having a refractive index higher than that of the flexible plastic hose, or a simple organic liquid contg. only CH, C-C, C-OH and C-F bonds in molecule. The conductor is used in lighting, medicine, techniques for coagulation, tissue wastage and polymsn. Conductor resists damage by radiation and has high transmission capacity.
Patent DE-2408162-A1 (DE)
Title: Foot release bindings for skis - a loose plate can turn about a pivot and also be released upwards from stops
Inventor: SITTMANN GEB VOESTER BRIGITTE
IPC: A63C9/00
Filed: 1974-02-20
Abstract: Foot release bindings for skis which allow a foot plate to turn about a pivot and also be released upwards. A spring loaded front peg (24) holds a loose foot plate (15) against a rear stop (21). Any forward shock will cause the pin to be pushed back and the plate released. A retaining plate (12) is also fixed to the ski (13) and pivots about a vertical axis (11). The foot plate is a sliding fit in this retaining plate, but not fixed to it. In the event of slewing, the plate turns about the pivot, is disengaged from the stops and the foot released.
Patent DE-2410186-A1 (DE)
Title: Distributor for granular material - collar of ejector-disc having plate springs for forming ejector paths
Inventor: MATZKE RUDOLF
IPC: E01C19/20
Filed: 1974-03-04
Abstract: The support flange of the ejector disc has an annular groove in which is inserted a flat steel ring with a number of notched springs on both sides. The ridges have openings in into which fit the ends of the springs with notches, and secure the ejector disc with ejector paths, according to its rotational direction. The collar has a number of plate springs. The prongs are tapered to both sides, and, according to the direction of rotation, grip to the right or left behind the plate-springs, with a wedge action. The plate springs are reinforced in the middle and have hooked ends for anchoring onto the collar.
Patent DE-2413407-A1 (DE)
Title: Press-moulding of hardenable moulding cpds. - in a mould whose bottom is lined with non-stick inlay
Inventor: FROER WERNER
IPC: B29C43/00
Filed: 1974-03-20
Abstract: Mouldings are mfd. from hardenable plastics by press-moulding in a mould whose bottom is lined, before the filling operation, with a non-stick liner. When the intended mouldings have a frontal face with projections and depressions then the bottom is designed as pressure-resistant matrix with suitable surfac configuration. Before each time the mould is filled with moulding cpd., the bottom is lined with a closely hugging, thin, flexible liner which is peeled off the moulding after removal from the mould. The moulding does not require post-treatment e.g. machining, polishing. The liner may be made from an initially smooth platic film, by suitably shaping with the aid of an auxiliary mould having a configuration similar to that of the matrix. The shaping may be by deep-drawing and/or mbossing. The film may be of PVC, polyethylene, polypropylene.
Patent DE-2414370-A1 (DE)
Title: Rotating coupling for thrust driven rotor blades - with both sides of coupling spiral contoured to fit thrust flow pattern
Inventor: GOERGL GEORG
IPC: B64C27/18
Filed: 1974-03-26
Abstract: The rotor blades are propelled by thrust jets in the tips of the blades and supplied with gases from a turbine under the rotor blades. The rotary coupling between the gas turbine comprises a fixed section into which the gases are guided at an angle to set up a swirl actio(, and a rotary section pivoted on the fixed sectin, and shaped into the two ducts which lead to the rotors. The ducts are tapered into the rotary chamber to line up with the direction of the swirl action of the gases in the fixed section. This leads to an efficient gas transfer and less strain on the rotary seals. The system suffers a min. of gas loss and has longer wearing seals.
Patent DE-2416154-A1 (DE)
Title: Base for installing and securing e.g. heavy heaters - base has upper and lower surfaces separable by a jack
Inventor: HACK GUENTER
IPC: F16M7/00
Filed: 1974-04-03
Abstract: Base comprises upper and lower surfaces joined together at their edges and provided with peripheral anchring points for securing to a floor. The top surface supports a pedestal on which the equipment is to be mounted and prior to installation the pedestal is inclined at 5 deg. to the vertical. A screw thread jack or jacks is provided for urging the upper and lower surfaces apart to deflect the upper surface thereby aligning the pedestal with the vertical. A counter plate below the jacking screw is welded in a horizontal position at both ends to the base plate flanged edges. Arrangement simplifies the installation of heavy heaters.
Patent DE-2423538-A1 (DE)
Title: Oxamide prepn. from hydrogen cyanide - and oxygen using copper nitrate-contg. catalyst soln. with recycling of gas mixt
Inventor: RIEMENSCHNEIDER WILHELM DR
IPC: C07C231/06
Filed: 1974-05-15
Abstract: Parent patent discloses a process for oxamide prepn. by reacting HCN with O2 or air in the presence of a catalyst soln. contng. lower aliphatic carboxylic acids and Cu nitrate. In present patent, the gas mixt., which leaves the catalyst soln. after the reaction, is recycled and re-contacted with the catalyst soln. Reaction according to equation 2 HCN + 1/2 O2 + H2O right arrow H2NCOCONH2 need not proceed quantitatively, as losses of unreacted HCN and O2 are prevented by recycling them to catalyst soln.
Patent DE-2429345-A1 (DE)
Title: Controller stabilising wattless current through consumer - uses comparison of actual valves and rated valves
Inventor: SCHLEUPEN RICHARD DIPL ING
IPC: H02J3/18
Filed: 1974-06-19
Abstract: The actual value of the wattless current can be tapped from a parallel connection of a resistance and a coil which is the primary winding of a transformer. A comparator is connected to an input for the rated value and to an output of the controllable rectifier stage. The output of the comparator can be coupled to an input of a multiplier circuit to the second input of which an input voltage is applied and to whose output a transformer is connected. The secondary winding of this transformer can be in series with the primary winding of the first transformer.
Patent DE-2429347-A1 (DE)
Title: Three-phase motor infinitely-variable speed setter - for asynchronous motors with slip-ring rotors reduces maintainance costs
Inventor: MUELLER PETER ING GRAD
IPC: H02P27/04
Filed: 1974-06-19
Abstract: The unit is for infinitely-variable speed regulation of asynchronous three-phase motors and comprises a three-phase generator for supplying the electrical energy to the three-phase motor, the three-phase generator being provided with a three-phase field (excitation) winching that is connected to a frequency changer (11). The direction of rotation of the exciter field, relative to that of the rotor containing the field (excitation) winding is specifically opposite to that of the rotor itself.
Patent DE-2435484-A1 (DE)
Title: Anti-botrytis and -Peronospora combination - contg thiabendazole and N-trichloromethylthio-phthalimide
Inventor: KOENIGER MAX DIPL CHEM DR
IPC: A01N47/04
Filed: 1974-07-24
Abstract: Active substance combination for combatting Botrytis and Peronospora contains 2-(4-thiazolyl)-benzimidazole (thiabendazole) (I) and N-trichloromethylthiophthalimide ('Folpet') (II), generally in the proportion 1:0.25 to 1:2 (p (pref. 1:0.9 to 1:1.3) w/w. The combination is partic. suitable for combatting Botrytis and Peronospora or grapevines. There is synergism between (I) and (II) so that lower (and less phytotoxic) concentrations of the components can be used to obtain the same fungicidal effect.
Patent DE-2436664-A1 (DE)
Title: Optical resolution of rotoxamine - using dextro-maleic acid and direct pptn. of the laevo-rotoxamine-dextro-maleate salt useful as an antihistamine
IPC: C07D213/30
Filed: 1974-07-30
Abstract: The process is effected in an alcohol esp. iso-PrOH. and the pptn. is carried out by cooling. 1-Rotoxamine d-maleate is obtd. in better yields than by isolation using tartaric acid.
Patent DE-2439901-A1 (DE)
Title: Electrical drive for hand held apparatus - is fitted with interchangeable work heads which are located by magnets
Inventor: BAUMGARTNER ERICH RUDOLF
IPC: H02K7/14
Filed: 1974-08-20
Abstract: Machines of this type are normally used to drive such appliances as electrically operated brushes or polishing buffs. Exchange of work heads is greatly simplified by using magnets as the fixing means. A hand held appliance (2) incorporates an electric motor (3) which operates a driving plate (5) carrying at least one permanent magnet (7). The work head, for example a polisher (10), contains a ferromagnetic armature (8) typically cast into the head structure (13). The drive is thus through the magnetic coupling, but mechanical locations may be incorporated if necessary to ensure correct placing of the head on the drive. The application is typically to oscillating drives.
Patent DE-2445125-A1 (DE)
Title: Medium frequency convertor delivering stabilised voltage - has a transformer separating input from output voltage
Inventor: SIEPMANN RICHARD
IPC: H02M3/335
Filed: 1974-09-20
Abstract: The medium frequency convertor for producing stabilised d.c. comprises transistors in the primary circuit, controlled by the output voltage in accordance with the load. They can be made conducting by pulses from a clock pulse generator, whose width is variable. At least two frequency convertors (U1, U2) controlled by synchronous pulses, are connected to a three-phase mains (R, S, T) through two equal reservoir capacitors (C11, C12), connected in series and charged through rectifiers (D11-D16) of suitable polarity.
Patent DE-2445624-A1 (DE)
Title: Additional and emergency brakes - with friction wheels having independent operation on each side of vehicle to assist steering
Inventor: REMPP WALTER
IPC: B60T1/14
Filed: 1974-09-25
Abstract: Special legs (12) are pivotted in a trailing manner in front of the rear wheels (11) and have friction wheels (13) at their ends. Normally the legs are in a raised setting, held there by spring pressure. For additional braking effect the legs are pushed downwards by servo cylinders (17) to push the friction wheels onto the road. This increases the braking effect, especially when the wheels are controlled by an anti-skid control. The system can also be used to improve the cornering of the vehicle with trailing arms fitted on each side of the vehicle, and the inside arm lowered on a corner. This can be automatically controlled, with links to the steering. The system prevents the vehicle from sliding into a corner by pivoting it round the friction arm.
Patent DE-2445870-A1 (DE)
Title: Data terminal with moving character display unit - has control circuits for character shift, display, and shift rapidity
Inventor: PRAME ERIC SUNE
IPC: G09G3/00
Filed: 1974-09-26
Abstract: Terminal (56), connectable to a computer (55), has a keyboard (51) which controls its operation and a display panel (51) to display characters coming from the computer and/or keyboard. The terminal is characterized by display control circuits and by control circuits for continuously shifting display characters by incremental values equal to a fraction of the character widths, and circuits which control, from the keyboard (10), the rapidity of the character shift. The display control circuits have a memory, a shift register, a character generator a first counter and a cyclic distributor. The character generator transmits groups of signals representing a column of a matrix of points representing the characters.
Patent DE-2451099-A1 (DE)
Title: Supervisory circuit for control signals - intended to reject spurious low value transient input signals uses delay element and level detector
Inventor: UDVARDI-LAKOS JANOS DIPL ING
IPC: G01R19/165
Filed: 1974-10-28
Abstract: The application is principally to protection or control circuits where signals coming from transducers may be subject to small transient disturbances, and where action of the circuit is to be inhibited is such cases. To introduce the required discrimination the signal arriving at the input terminal (4) of the additional circuit is passed through a delay element (1) which is followed by a level detector (2). Small disturbances are thus damped by the delay element and there is no response unless they persist. In that case the level detector setting is reached and a corresponding signal generated at the output terminals (6). Large changes in signal requiring immediate response bypass the delay element through a further level detector (3) and are applied immediately to the first level detector (2) thus appearing at the output terminals without delay.
Patent DE-2453319-A1 (DE)
Title: Memory circuit using two complementary FET's - gate of one transistor also acts as source or drain of second transistor
Inventor: GOSER KARL DR
IPC: H01L27/00
Filed: 1974-11-11
Abstract: The memory circuit uses two FETs connected in series, the source of one transistor connected to the gate of the other, the gate of the first transistor connected to the drain of the second and the drain of the first transistor connected to the source of the second transistor. The two FETs are of complementary type and formed on a common semiconductor substrate (102) one of the FETs having an insulated gate and the gate electrode (112) of this transistor acting simultaneously as the source or drain electrode of the second FET. The latter gate electrode (112) can be on an insulating layer (110) extending above a first channel zone (111) formed in the substrate and the drain electrode (107) of the other transistor is connected to it.
Patent DE-2456106-A1 (DE)
Title: High frequency interference suppressor - prevents transient processes in electronic equipment from reaching the mains
Inventor: SCHALLER RUDOLF ING GRAD
IPC: H04B15/02
Filed: 1974-11-27
Abstract: The suppressor has a current compensated toroidal choke and a number of X and Y capacitors, earthed and not earthed. A series circuit consisting of a gas filled over-voltage arrester (5) and a capacitor (6) shunted by a resistor (7), is connected on the mains slide (2) between one mains wire (9) and frame. Values of capacitance (6) and resistance (7) are such, that the capacitor (6) is fully discharged during half-period of mains voltage. The capacitor (6) and the balance X-capacitor (C'x) are charged to about 1/10 of the amplitude of pulse voltage from the mains (E.
Patent DE-2461165-A1 (DE)
Title: Increasing the sorption capacity of active carbon - by heating in inert gas and subsequent indirect cooling
Inventor: BERG RONALD
IPC: C01B31/08
Filed: 1974-12-23
Abstract: In a process for improving the sorption capacity of active carbon by heating and subsequent quenching in a cooling medium, the carbon is first heated to a temp. in the region of 50-300 degrees C and then quenched to a temp. of below minus 66 degrees C by heat transfer through a dividing wall by a quantity of the coolant. The heating process is pref. carried out in an inert atmosphere, and the cooling is pref. carried out such that the temp. falls at a rate of 90-400 degrees C per minute as far as 0 degrees C. Cooling can be effected by a combination of condensation of inflowing inert gas with the joule thompson effect. In comparison with existing techniques the resultant carbon has a greater hardness and reduced particle size reduction due to thermal shock, whilst sorption capacity is equal or better. Inert gas excludes unwanted reactive gases, and controlled cooling rate gives reproducible results.
Patent DE-2503777-A1 (DE)
Title: Manure spreader with pivotable booms - has feeder output automatically adjusted by automatic rotation change over
Inventor: GAIL JOSEF
IPC: A01C15/08
Filed: 1975-01-30
Abstract: Manure spreading equipment comprising a supply container and pivotable booms with mechanically or hydraulically driven spreading and feed mechanisms where a feed fevice (20) is fitted in a spreader device boom above a delivery mechanism. This feeder is automatically adjusted in its output and the spreader box is in two parts (15, 16). These halves (15, 16) form a unit with the booms (13, 14). Specifically the feed device is formed from a feed spiral which is hydraulically driven. The feed output is regulated by the automatic change over of the direction of rotation by means of pressure switches (25, 27) and a control plunger (26).
Patent DE-2506132-A1 (DE)
Title: Feeding thread in a machine - has roller pressing thread against hard and smooth roller with force proportional to machine traction
Inventor: MAZZUCOTELLI GIOVANNI PROF
IPC: B65H51/10
Filed: 1975-02-13
Abstract: Equipment for feeding an elastic or a non elastic thread in a machine consists of a roller with a hard and smooth surface rotating at a suitable speed and an opposite roller contacting the roller and pressing the thread with a force proportional to machine traction. The thread is wound over a part of the roller circumference and the roller is driven at a circumferential speed which is higher than the expected maximum thread speed. The opposite roller presses against a roller edge and is rotatably mounted on a rod, the other end of which is attached to the front of a cylindrical part whose opposite surface is connected to an arm. The end of the arm forms a fork.
Patent DE-2507192-A1 (DE)
Title: Piston for vacuum pumps handling gaseous media - has ring groove let into the piston having a spring element inserted under tension
Inventor: THURNER HELMUTH
IPC: F04B39/00
Filed: 1975-02-20
Abstract: Piston for vacuum pumps movable in a straight line to and fro inside the cylinder. The piston (1) consisting of polytetrafluorethylene, has a ring groove (13) let into it at an oblique angle and a spring element (15) inserted into the ring groove which presses the sealing lip (17) positioned radially outside the ring groove flexible in a radial direction against the inner wall of the cylinder. The spring element consists of a screw spring inserted under tension into the ring groove (13) extending in the piston at an oblique angle directed upwards.