baber/WOPTO huggingface dataset:
Patent DE-3908172-A1 (DE)
Title: Porous mineral light-weight aggregate granulate and process for the production thereof
Inventor: GUMBMANN ANDREAS DIPL ING
IPC: C04B20/06
Filed: 1989-03-13
Abstract: The invention relates to a porous, expanded and/or sintered and/or fired (burnt out) light-weight aggregate granulate (granular material), prepared from a moist mixture of sewage (effluent) sludge, fly ash and clay body by granulation of the mixture to give pellets, drying of the pellets, ceramic firing with expansion (bloating) of the pellets and cooling the fired granulate, with expanded granules being formed as a result of the production process, which granules have a closed sintered skin on the surface, with the grain of the granulate forming a core of a fired mixture of sewage sludge, fly ash and clay body. The invention further relates to a process for producing light-weight aggregate granulates and a process for producing pellets of the above-described type, in which, for the production of pellets, the mixture of sewage sludge, fly ash and clay body is first granulated to form a pellet core, a clay body shell is subsequently applied to the core and a limestone meal (flour) shell is applied to the clay body shell, and the firing is carried out in a fluidised bed, with, in particular, pellets being fed in continuously and separated, porous granulate being discharged.
Patent DE-3914816-A1 (DE)
Title: Asynchronous generator frequency regulator - has synchronous generator driven by hydraulic motor correcting asynchronous generator frequency
Inventor: BEMME ERNST
IPC: H02P9/42
Filed: 1989-05-05
Abstract: The hydraulic regulator for maintaining the frequency of an asynchronous generator (G2) at a constant value uses a closing device (P2) and a hydraulic motor (P3) receiving a constant hydraulic volumetric flow, with the closing device (P2) controlling the return flow from the hydraulic motor (P3) to vary its rotation in inverse proportion. The closing device (P2) is coupled to the asynchronousa generator (G2), with the hydraulic motor (P3) driving a synchronous generator (G3), acting as a slip generator providing a difference frequency which is added or subtracted to the main generator frequency, to maintain a required frequency value.  Pref. the constant volumetric flow is provided by a regulating valve (MV) and the closing device (P2) comprises a hydraulic pump. USE - Wind or water turbine, or onboard ship's generator.
Patent DE-3916475-A1 (DE)
Inventor: MAASS KARL-JOSEF
IPC: E21D5/04
Filed: 1989-05-20
Abstract: The invention provides for a method and apparatus for lining a shaft, particularly for the mining industry, wherein a foundation base portion or section is lowered onto a foundation (9) in the ground/subsoil (10) by means of a pull-out device (6), a shaft lining (5) which is assembled from lining rings (3) with filler material located therebetween, is located on the foundation (9) and then backfilled with filler concrete. According to the invention a lining section (5), with its own base portion or section (4) is assembled from several lining rings (3, 4) preferably at the mouth of the bore hole and is placed on a preceding section (5) in the bore hole (2) and each lining section (5) is backfilled section by section before fitting the next one (5) while drawing an injection drill pipe (26). A flexible spacing layer is provided between the lining rings (3, 4) specing them a distance apart as well as acting as a hinge. <IMAGE>
Patent DE-3928310-A1 (DE)
Inventor: SCHOENWAELDER KARL-HEINZ DR
IPC: B01J23/40
Filed: 1989-08-26
Abstract: Detergent compositions containing ether-carboxylic acids which are prepared by oxalkylating carbohydrates and derivatives thereof followed by oxidation, either by immediately ethoxylating the carbohydrates or the derivatives thereof in the customary manner or by first alkoxylating the carbohydrates or the derivatives thereof with a higher alkylene oxide and then ethoxylating the product, and oxidising the resulting aqueous solution without further treatment with oxygen as the oxidant in the presence of a catalyst comprising at least one platinum metal in a pH range in which the carbohydrates and the carboxylic acids derived therefrom are stable.
Patent DE-3929419-A1 (DE)
Title: New 1,3,4-thiadiazole cpds. for use in liq. crystal medium - having large negative dielectric anisotropy and low m.pt. and viscosity
Inventor: KRAUSE JOACHIM DR
IPC: C07D285/12
Filed: 1989-09-05
Abstract: New 1,3,4-thiadiazole derivs. are of formula (I). R1-2 = 1-7C alkyl, in which one or 2 CH2 gps. may be replaced by -O-, -S-, -CO-, -O-CO-, -CO-O-, -CH=CH- and -C=C- but 2 hetero-atoms are not linked directly; A1-2 = 1,4-phenylene, opt. with one or more F substits., 1,3,4-thiadiazol-2,5-diyl or trans-1,4-cyclohexylene; m and n = 0 or 2; o and p = 0, 1 or 2; (o + p) = 1, 2 or 3; if o and/or p = 2, then A1 and A2 gps. and  n may be the same or different; at r least one of the A1 and A2 gps. = a 1,3,4-thiadiazol-2,5-diyl gp..
Patent DE-3930343-A1 (DE)
Title: Vehicle with opening roof - has rear roof portion, in its swung forward and slid rearwards position, partially engaging recesses in rear bodywork
Inventor: SUSENBETH SEBASTIAN
IPC: B60J7/02
Filed: 1989-09-12
Abstract: The vehicle, in cabriolet style, has an opening roof consisting of essentially rigid pieces. When opening the roof, the rear roof portion (16) both swings forwards and slides rearwards, with the front, lower corners (39) of the C-posts (19) fitting into recesses, covered by flaps (40, 41) in the rear bodywork (38). Pref. the front roof portions slide rearwards to a position against the rear window (18) and the supporting side elements are removeable. USE/ADVANTAGE - Folding roof made of rigid pieces. Combines noise levels of a fixed roof vehicle with openness of a cabriolet, without restricting boot space.
Patent DE-3930542-A1 (DE)
Title: Radial piston pump for engine cooling system - uses electromagnet to operate flow control valve
Inventor: SCHMID PETER
IPC: F04B1/07
Filed: 1989-09-13
Abstract: Radial piston pump comprising a housing with a number of pistons driven by an eccentric mounted on a shaft, with a valve member in the suction bore which can vary the flow to the pistons. A flow division takes place in the suction bore (22) so that in addition to the control flow there is a constant flow, with a piston spool (26) and a seat valve forming the valve member which is activated by an electromagnet (27). USE/ADVANTAGE - Pump able to cope with strongly fluctuating delivery demands, as for example from the hydraulic motor operating a cooling system for a road vehicle engine.
Patent DE-3939495-A1 (DE)
Title: Liq. through flow regulator for water supply - has one transverse banking face in tubular component defining passage for liq., useful in washing machine
Inventor: BENNA FULVIO
IPC: F16K17/34
Filed: 1989-11-29
Abstract: Liq. throughflow regulator is for regulating water supply in washing machines and incorporates at least one transverse banking face in a tubular component which defines a passage for the liq. A regulating component rests on the banking face and consists of a profiled metal plate manufactured by punching out. ADVANTAGE - The regulator has a simple structure and is easy to manufacture while featuring an improved functional accuracy.
Patent DE-3940138-A1 (DE)
Inventor: HENSE ULRICH DR
IPC: C09D5/34
Filed: 1989-12-05
Abstract: Cycloaliphatic compounds, which have one or more ethylenically unsaturated substituents, are disclosed as components of borehole-filling masses, optionally together with other curable components.
Patent DE-3940520-A1 (DE)
Title: Process for the selective enrichment - of transient materials within a fluid mixt.
Inventor: GUDERNATSCH WILHELM DIPL ING D
IPC: B01D61/36
Filed: 1989-12-07
Abstract: In a fluid treatment unit in which transient materials are selectively removed or added, fluid flows past a membrane through which unwanted constituents permeate to the other side. The novelty is that a fluid flows past the second membrane face contg. the same concn. of the wanted fluid as exists on the first face of the membrane, resulting in an approximately equal flow of the wanted fluid in both directions. This process typically makes use of PTMSP polymer membranes, and copolymers such as PPO and PDMS (polydimethylsiloxane) which have enrichment factors of 15 at 5 wt. % ethanol and 20 wt. % respectively. These membranes facilitate enrichment of ethyl alcohol which is greater than that achievable by vacuum evapn. USE/ADVANTAGE - Unwanted ingredients are sepd. from the original fluid with little change in the content of the wanted ingredient. The process offers two further selectivity mechanisms, the selectivity due to the membrane and that due to the speed with which the fluid passes across the face of the membrane. These lead to better quality sepn. of constituents leading in turn to fewer downstream processes and their associated energy costs. An example of the use is the removal of alcohol from drinks without a loss of CO2.
Patent DE-4003104-A1 (DE)
Title: Carton for packing chocolates - has tags projecting from side walls of body which engage slots in lid
Inventor: MAIER HANS
IPC: B65D5/68
Filed: 1990-02-02
Abstract: The carton for packing chocolates has a body made from a blank cut from a sheet of cardboard. The box has a rectangular floor (22) with vertical side walls (23) and end walls (24,25). Each side wall has two tags (33) projecting vertically from the upper edge. The box is provided with a lid which has two slots (45) on each of its long edges. When the lid is placed over the body, the tags engage the slots and hold the lid in place. The floor of the box has slots (35) on its long edges. When the boxes are stacked one upon another, the tags of the lower box engage the slots in the floor of the upper box. USE - Packing of chocolates.
Patent DE-4004427-A1 (DE)
Title: Diagnostic fault test system and circuit
Inventor: DEUTSCH ROBERT W
IPC: G01R31/00
Filed: 1990-02-13
Abstract: The diagnostic fault test system and circuit sequentially tests a number of drivers and their associated solenoid loads.  Control signals are provided to the drivers by a computer controller to achieve desired solenoid actuation.  The controller temp. alters the control signals such that all  of the drivers are forced into an on or off state for a first time period.  After a delay a signal associated with each driver stage is monitored to determine if the driver and its load are operating properly.  Then the controller resumes normal control of the drivers.  The duration of the forced on/off state is short enough so as not to cause a change in the actuated/nonactuated state of the solenoid loads.  Each monitored signal from the driver is sequentially compared to a high and low threshold to indicate either proper operation or the identification of  one two different types of fault  which may occurs. Drivers are pref. tested in both on and off states for peroper operation and identification of a total of four different possible faults.  Present system allows rapid testing of all drivers and their loads by use of a common transient setting delay time.
Patent DE-4005048-A1 (DE)
Title: Chained tensioning device for antiskid chain - has holding bracket with identical plastics injection moulded ends and chain tensioner
Inventor: MANGOLD CHRISTIAN
IPC: B60C27/10
Filed: 1990-02-16
Abstract: The antiskid chain covers the tyre tread with a spring steel bracket holding device (10) for the inside of the tyre, both ends (16,17) of which are identical and form linkages for a removable tensioning chain (30).  Both ends are plastics injection moulded and have at least one recess (34,36) for attachment of one end (38) of the tensioning chain. Another recess (28) allows for the antiskid chain (12) to be pinned (14) by at least one longitudinal forked connector (18,20) and also for the tensioning chain to be attached.  At least one forked connector is detachable from the end chain link (22). USE/ADVANTAGE - Low cost mfr., ease of use and maintenance.
Patent DE-4006893-A1 (DE)
Title: Digitally adjustable electrical circuitry - uses micro-controller and memory to alter analog characteristics in response to digital inputs
Inventor: LAMARCHE JEAN-LUC
IPC: H03K17/95
Filed: 1990-03-05
Abstract: The circuitry comprising an adjustable device (2) connected to a transistor (1). The device (2) includes a non-volatile housing (3) which stores digital information to allow control of an adjustable element (4), e.g. a number of resistors. Pref. the information is loaded with a memory (3) through use of contactless switches (5,6) e.g. inductive, capacitive, optoelectronic, Hall Effect types. Additionally a microcontroller (7) can monitor operation of switches (5,6) which with a display device can allow programming in conversation mode. USE/ADVANTAGE - Inductive proximity switches, digital input of data removes noise sensitivity.
Patent DE-4008536-A1 (DE)
Title: In-car entertainment equipment with removable control unit - has unique ID signal stored in fixed value memory of either main unit or control unit
Inventor: FUSE JUNICHI
IPC: B60R11/02
Filed: 1990-03-16
Abstract: The main audio unit is secured in a housing (2) behind its control unit (7) which can be pivoted forwards and downwards about two pins (9) for access to a cassette insertion slot (4) in the front panel (3) of the audio unit. The control unit (7), which can be taken away when the vehicle is unattended, carries an opening switch (47), a source selector (48) and a pick-up (49) for remote control signals. ADVANTAGE - The audio equipment is usable only with the control unit identified by the stored signal which deters attempts to rip out the audio unit.
Patent DE-4010022-A1 (DE)
Inventor: NEPOTE ANDREA
IPC: H02P7/288
Filed: 1990-03-29
Abstract: The device includes a transistor 2 whose collector-emitter path is intended to be connected in series with the armature winding of the motor 1, between the two poles of a direct-current voltage supply 3, a sensor 4 providing a signal indicative of the current flowing in the collector-emitter path of the transistor 2, and a current-regulator circuit 5,10 including an amplifier 5 with a first input 5a for a control signal, a second input 5b connected to the current sensor 4, and an output connected to the transistor 2 for regulating the current flowing in the collector-emitter path in dependence on the control signal and on the signal provided by the current sensor 4. An integrating network 11, 12 is interposed between the second input 5b and the output of the amplifier 5 and improves the stability of the device as a whole, particularly at high frequencies. <IMAGE>
Patent DE-4012156-A1 (DE)
Title: Simple but versatile picture frame - has e.g. stepped corner pockets holding picture plus glass and kept in position by e.g. elastic band passed round hooks on all corners
Inventor: NOVOSAD KAREL
IPC: A47G1/06
Filed: 1990-04-14
Abstract: A picture frame has at least four corners, possibly a front sheet of glass, and a backing. It has basically triangular corner pieces which hold the corners of the picture and which are connected by a locking device behind at the back. The corners are pref. made of metal, plastics or acrylic polymer. Four corner pieces (2,3,4,5) can be e.g. stepped so as to fit various sizes of picture. On the back  has four hooks (7,8,9,10) on the corners; a rubber band (6) is passed round these hooks, whereby its tension holds the corner pieces together. ADVANTAGE - The prod. has a very simple construction and accomodates different sizes of picture. The set of constituent parts occupies little space and is composed of few individual parts, so simplifying its sale.
Patent DE-4014607-A1 (DE)
Title: Electronic multiplier circuit based on serial application - carries out N-times addition of multiplicand and shifts intermediate product systems
Inventor: MERKLE PAUL
IPC: G06F7/491
Filed: 1990-05-07
Abstract: An electronic multiplier circuit produces its product number by n-times addition of the multiplicands to achieve correct results numbers. The intermediate product sums are accurately shifted w.r.t. the multiplicands according to requirements. The circuit contains a control stage with a circuit (12) which produces the corresp. control potential in advance. The control stage also contains a circuit (11) which produces each multiplier number in numeric code.
Patent DE-4015152-A1 (DE)
Title: Liq. applicator
Inventor: FUKUOKA MITSUHIRO
IPC: B43K8/02
Filed: 1990-05-11
Abstract: Applicator for liquids e.g. ink, correction fluid, oil paint, water colour or nail varnish consists of the container (1), a front supply tube (2), a feeder (3), a valve (4), an applicator point (5) and a spring-loaded ball (6,11) resting on a conical seat (31). The point (5) is made of a fibre bundle of nylon, acrylic or polyester resin, or of sintered fluorocarbon, PP, PU, PE, EVA resin, or foam of PU, PP, PE, EVA resin, or of felt of coarse wool or PP. Rigid plastic, glass or metal is also possible.
Patent DE-4025624-A1 (DE)
Title: Cleaning system for pressure fed beer dispenser - has programmable control unit, 3 way valve and cleaning fluid container for efficient hygiene routine
Inventor: MALDONADO FRANK
IPC: B67D1/07
Filed: 1990-08-13
Abstract: The cleaning system for a beer dispensing apparatus (1) with cooler (2) comprises a container (16) for mixing water and cleaning fluid which can be connected to the spigot tap (4) on the beer canister (5) by a plug-in bayonet connector (9,11). A programmable controller (12) with read-out facility controls there-way valve (13) to provide interconnection between water inflow via stop valve (14,15), container feedpipe (17) and CO2 cylinder (6). Screw cap (22) permits introduction of cleaning fluid to container (16) in space cleared by CO2 pressure after  brief switchover of valve (13). A typical control console comprises an 80C31 microprocessor, RS 223 serial connector, 8K and 256 byte EPROM's and keyboard. USE/ADVANTAGE - A dated record of each cleaning occasion is stored for examination by authorised inspection personnel and any negligence is therefore attributable. Simple test for absence of cleaning fluid after flushing employs a suitable indicator e.g. phenolphthalein. System can be changed for multiple dispense installations with little extra complications.
Patent DE-4027780-A1 (DE)
Title: Tandem axle arrangement for timber vehicle -  has drive system with space saving reduction gear
Inventor: BULLY BERND ALBERT
IPC: B60K17/32
Filed: 1990-09-01
Abstract: The tandem axle system is for a timber hauling vehicle. There is a planetary drive (14) used as a reduction gear for each wheel (7). The sun wheel (15) of each planetary drive is driven by gears (11,10,9,8) arranged one behind the other along the length of the wing, which is connected to the axle shaft (3). USE/ADVANTAGE - Axle arrangement giving max. drive moment when the vehicle is fully laden, and also having a narrow track width.
Patent DE-4034723-A1 (DE)
Title: Early recognition of trouble in mains=connected inverters - comparing absolute DC and difference between DC and AC side currents with permissible limits
Inventor: TEPLER BERND DIPL ING
IPC: H02H7/122
Filed: 1990-10-29
Abstract: A subsynchronous inverter cascade is constituted by an induction motor (M) with starting resistance (R), power switches (Q), a bridge rectifier (LGR), inverter (WR), DC smoothing choke (Ld) and transformer (T). Instabilities associated with overcurrent cause the inverter (WR) to be inhibited forcibly by a thyristor (LT) fired from a control circuit (St) sensitive to outputs from a differential current comparator (DK) and overcurrent comparator (UK). The unstable inverter is thereby turned off at the precise instant when the cyclic current is at its min. value. ADVANTAGE - Undelayed tripping of suitable overcurrent protection arrangements safeguards inverter before excessive current can arise.
Patent DE-4042210-A1 (DE)
Title: Removing arsenic and other metals from waste water - by treating with hydrogen sulphide and removing pptd. sulphide(s)
Inventor: SALCEDO GOMEZ RAFAEL
IPC: C02F1/70
Filed: 1990-12-29
Abstract: Removal of As and other metals from waste water currents, opt. in presence of H2SO4, in soln. in varying ratios, involves (a) treating the water with H2S under pressure in countercurrent, in 1 or more stages, giving a soln. with pptd. sulphides, and a soln. contg. gas, comprising, among others, unreacted H2S, (b) filtering to remove the ppte. and give a clear soln., and (c) de-gassing the clear soln. with air, giving a soln. free from As and metals, suitable for further treatment, and a gas-contg. soln. loaded with H2S. The soln. contg. H2S is washed with alkali before release, free from H2S, into the atmos., giving a small amt. of a soln. of alkali sulphide, which can be used as additional source of sulphide. USE/ADVANTAGE - Long residence times, mechanical stirring, and high acidity are avoided, and an easily filterable ppte. is obtd. without use of filtration aids.  The waste water esp. originates from treatment of sulphide ores with H2SO4. Treatment of waste water from H2SO4 processes, contg. up to 20 g/l of As, is claimed.
Patent DE-4103897-A1 (DE)
Title: Integrable tone generating circuit - has D=A converter(s) supplying current and output(s) dependent on digital input signals
Inventor: LENZ MICHAEL
IPC: G06J1/00
Filed: 1991-02-08
Abstract: The circuit has a tone generator (TG), transmitting digital tone sequences. Its output stage consists of a D/A converter(s) (DA) and an amplifier stage (SV). In the output stage digital tone sequences are converted into signals energising a loudspeaker (LS). ADVANTAGE - L.V. supply requirements, and facility for direct loudspeaker connection to circuit output terminal.
Patent DE-4104159-A1 (DE)
Title: Brush wear sensing current loop circuit for DC machine - uses brush wear contacts fed via lead resistors and current limited to switch detector relay contacts
Inventor: WODZIMIERZ STEFAN ROQOZ
IPC: H01R39/58
Filed: 1991-02-12
Abstract: Two detector circuits - each comprising a load resistor (38/62), FET current limiter (46/60) and a switching relay coil (50/52) - are arranged in series with the positive (22 to 27) and negative (28 to 33) brush wear contacts of a rotating dc machine. Excessive wear in a positive brush (10 to 15) connects the positive supply to the positive brush wear detector circuit (38,46,48) via a positive brush wear contact (22 to 27), while excessive wear in a negative brush (16 to 21) connects the negative brush wear detector circuit (62,60,54) to the negative supply via a negative brush wear contact (28 to 33). In the event of excessive wear in a brush of either polarity, current flows through the appropriate detector circuit via a brush wear contact and energises the switching relay to toggle the relay contacts, providing remote indication of the fault via a pair of output terminals (68,70). The dual-coil switching relay may be replaced with two single-coil reed relays (with manual push-button reset), a dual optically-isolated thyristor or a dual optically-isolated triac. ADVANTAGE - Load resistor and FET current limiter isolate brush wear detection process from d.c. power source. Changing load resistor enables detection circuit to be used for range of supply voltages.
Patent DE-4104751-A1 (DE)
Inventor: FRIEDRICHS K GERD
IPC: B21H1/04
Filed: 1991-02-15
Abstract: For the manufacture of rotationally symmetrical workpieces such as wheels or pulleys, it is proposed that two tools be displaced relative to the workpiece, or vice versa, in a direction tangential to the workpiece. The point at which a tool acts on the workpiece should lie near the base of the perpendicular to the tangent made with the workpiece. This enables two manufacturing steps to be carried out in a short time without the need for laborious retooling operations.