baber/WOPTO huggingface dataset:
Patent DE-3929317-A1 (DE)
Title: Thermodynamic system using combustion engine - has absorption heat pump for waste heat recovery for max efficiency
Inventor: MUELLER JOY DIPL ING
IPC: F02G5/00
Filed: 1989-08-31
Abstract: The thermodynamic system uses a combustion engine (MOT) which is mechanically coupled to an electrical generator (GE1) and thermally coupled to thermal energy stores (WWSP, HZSP, ERSP), with the waste heat of the combustion engine (MOT) recovered via an absorption heat pump (AWP). Pref. the combustion engine (MOT) has a synchronous clutch on the output side, with an electromagnetic clutch (KP) used to couple the engine to a flywheel energy store (SRSP) acting as a rotor of an asynchronous motor. ADVANTAGE - Improved efficiency.
Patent DE-3929568-A1 (DE)
Inventor: AXMANN NORBERT DIPL ING
IPC: B65G60/00
Filed: 1989-09-06
Abstract: A stacking station for receiving empty containers stacked in superposed relationship and a stacking station for receiving full containers which are also stacked in superposed relationship are disposed side-by-side while arranged at a right angle relative thereto and adjacent the empty container stacking station is a station for filling the containers. When viewed from above the apparatus forms an angle with the empty container stacking station as the angle corner. In normal use that permits the apparatus to be used in a space-saving fashion in such a way that the two stacking stations can be set up at the end of a production machine from which articles are to be taken while the filling station extends on the discharge side of a machine of that kind for component ejection.
Patent DE-3934613-A1 (DE)
Title: Hand gadget for unscrewing screw caps - has sling to hold neck of vessel and band to tighten around cap
Inventor: KASTL JOSEF
IPC: B25B13/50
Filed: 1989-10-17
Abstract: The hand gadget consists of a handle (5), a cross looped wire (2) sling passing over a pulley (4) and fixed to a threaded nut (7) in the handle. A tensioning band (1) is also fixed to the nut and a curved concave throat piece (3) is attached to the end of the handle. At the other end of the handle is a screw knob (10) attached to a threaded spindle (8) which passes through the nut.  The wire sling is tightened round the neck of the vessel below the cap pressing it against the throat, while the band fits around the cap to be removed. The knob is turned to tightend both sling and band and the handle is levered to unscrew the cap. USE/ADVANTAGE - The gadget is designed to hold the vessel firm whilst the cap is unscrewed.
Patent DE-3934992-A1 (DE)
Title: High safety design of hand drill - has low moment of inertia as lightweight alloy casing contg. body with compressed air motor and rotors made of laminated wood
Inventor: BROCKSCHMIDT DETLEV DIPL ING
IPC: B23B45/04
Filed: 1989-10-20
Abstract: Hand drill has gear motor type compressed air motor in its body inside protective casing with two opposite handles, of which one  has hand-operated valve to regulate air supply, both rotors being made of light-weight material namely laminated deal, whose layers are glued togetherr at angle to rotor shaft, or alternatively bonded together. Timber used is pref. ebony, bongossi, beech or oak; it can also be densified wood with layers vacuum or pressure-impregnated with phenolic resin or with board having coating of phenolic resin; alternatively rotors can be made of fine ceramic material, or ceramics with Al silicate and feldspar or metallic oxides in flux; alternative materials are high strength high thermal resistance thermoplastics such as polyetheretherketone or polyamideimide; polymer concerned can also have fillers/fibres lubricant/molybdenum material. Protective casing is pref. Al-Mg-Si alloy and body polyurethane. ADVANTAGE - Rotors are lighter in wt. and cheap. They present reduced risk of danger to operators (from sudden stops  etc.) as result. They have reduced noise level, lower moisture absorption, and improved running properties.
Patent DE-3938673-A1 (DE)
Title: Agricultural sprayer for liquid fertiliser - comprises liquid container with separate container for fertiliser, interconnected through valves and pump
Inventor: OBERHEIDE FRIEDRICH
IPC: A01M7/00
Filed: 1989-11-23
Abstract: The agricultural spray consists of a container for water (1) with a pump controlled supply line and quantity measuring armature. A return pipe (5) leads from the container to the control valve (3) and a supply pipe leads to a jetting tank (20), on the end of which is a nozzle (33) which injects fertilizer or other material into the water. The nozzle has two positions, one for injecting fertilizer and the other for discharging the material in the container (39). USE/ADVANTAGE - The spray is cost-effective and efficient.
Patent DE-4000247-A1 (DE)
Title: Additives for increasing activity of enzymes acting on nucleic acids - comprising milk or its components or prods.
Inventor: DREYER KLAUS DIPL BIOL
IPC: C12P19/34
Filed: 1990-01-06
Abstract: Activity-enhancing additives (I) for enzymatic reactions in which the substrate is a nucleotide-contg. mol. comprise milk and/or milk-components or milk prods. USE/ADVANTAGE - (I) are esp. useful for increasing the activity of restriction endonucleases in digesting nucleic acids, thereby reducing the amt. of enzyme required and rendering the digestion more complete (esp. important in studying restriction fragment polymorphism in genomic DNA). They may also increase the activity of ligases, ribonucleases, polynucleotide kinases, DNA and RNA polymerases, exonucleases and topoisomerases. (I) is dried milk powder or a protease-, DNase- and RNase-free milk protein fraction, esp. casein. (I) is added to an aq. buffer soln. of the enzyme and substrate in an amt. of 1-10,000 (esp. 50-300) mg/l. (I) may be formulated as a ready-to-use or concd. soln. in a buffer, pref. stabilised with a detergent and/or antifreeze.
Patent DE-4007554-A1 (DE)
Title: Temp. difference monitoring system for pressure vessel - has permissible temp. difference reduced upon increasing pressure and temp.
Inventor: GRAUCOB HEINRICH
IPC: B01J3/00
Filed: 1990-03-09
Abstract: The monitoring system uses a temp measuring device to detect the difference in temp between the top and the bottom of a pressure vessel heated by steam, to initiate an alarm when an abnormal temp. difference is detected. During the heating up phase the temp. at the top is used as the guidance parameter for initialing the temp. difference monitoring with switching to narrower permissible temp. differences with increasing press and temp. The bottom temp. is used as the guidance parameter for increasing the permissible temp. difference in the pressure reduction phase and for terminating the monitoring. ADVANTAGE - Accurate monitoring over wide operating range.
Patent DE-4010399-A1 (DE)
Title: Fastener for ends of chain - uses links made of round bar and consists of two U=shaped members locked together by spring ring
Inventor: RAST JUERGEN
IPC: F16G13/14
Filed: 1990-03-31
Abstract: The chain with links made from round bar has its ends fastened together by a special link which consists of two identical U-shaped members (2,3).  These U-shaped members (2,3) fit together with projections (8) on the side of the leg of one member (2) fitting into recesses (9) on the side of the leg of the other member. These two members (2,3) are then held together by a short bolt which has a circumferential groove which receives a split spring ring.  The ring can be compressed to enable the bolt to be inserted into recesses formed in the sides of the legs of the U shaped members. When the bolt is in place the ring expends radially into a groove in the recesses. USE - Fastener for ends of chains.
Patent DE-4019116-A1 (DE)
Title: Water-soluble cellulose sulphate - by alkali-activation and acid-regeneration of cellulose, dehydration with propanol, sulphating with sulphuric acid-propanol, etc.
Inventor: LUKANOFF BRIGITTE DR
IPC: C08B5/14
Filed: 1990-06-12
Abstract: A process for the prodn. of water-soluble cellulose sulphate in the alkali salt form (I) by heterogeneous sulphation of high-moL.wt. cellulose raw material (II) using H2SO4/ propanol (III)/(IV) as reaction medium/sulphating agent after  prior activation with (partly) aq. alkali,  regeneration of the cellulose with acid, washing out the salts formed and converting the sulphate half-ester into an alkali salt; the novelty is that the cellulose material obtd. after activation and washing out is dehydrated by treatment with (IV) without intermediate isolation, the wt. ratio of cellulose:(IV) in the fibre pulp is adjusted to (1:2)-(1:10), the pulp is cooled to sulphating temp. and a separately prepd. (III)/(IV) mixt. is added so that the mol. ratio (III):n-propanol in the reaction mixt. is 1.1-2.5 and the mol. ratio (III):iso-propanol is 1.3-2.5, and sulphation is carried out for 5-120 mins. at (-) 10 - (+) 15 deg.C. USE/ADVANTAGE - (I) is useful as an auxiliary substance for biotechnological and medicinal applications. The process provides a heterogeneous process for the prodn. of (II) . which is completely water-soluble, een at low mean degree of substitn., using less (III) and smaller amts. of hazardous/toxic chemicals than prior-art processes.
Patent DE-4020123-A1 (DE)
Title: Hemispherical half-shell of worm gear housing - has container for thrust bearing plate with truncated cone-shaped casing
IPC: B60N2/90
Filed: 1990-06-25
Abstract: The hemispherical half-shell of a worm gear housing has a container-part (3) for a worm thrust bearing plate, for adjusting vehicle seals. It has the peripheral wall (4) in the form of a section of a truncated conical casing. The height (h) of the truncated conical casing is greater than the thickness (d) of the worm thrust bearing plate. The radius (RD) of the truncated conical bearing plate is smaller, and the radius (RG) of the truncated conical base circle is greater, than the radius (RP) of the wormm thrust plate. USE/ADVANTAGE - Worm gear housing on vehicle. The plate is prevented from falling out.
Patent DE-4021466-A1 (DE)
Title: Restoring damaged areas of enamel layer in steel tanks - by spraying abrasive agent, esp. corundum, applying protection layer by plasma or detonation spraying etc.
IPC: C23C4/00
Filed: 1990-07-05
Abstract: In this method the affected site is subjected to the effects of a sprayed abrasive agent, esp corundum, blasted on by air or water pressure or a mixt. of the two. The area in the immediate vicinity of the damage (2-30 mm around the periphery) is also cleansed by blasting with a shape-edged abrasive. The protective layer is applied next by plasma or detonation spraying, powder-flame or wire-flame or electric arc methods. The pores of the covering layer thus produced are then closed by mechanical working esp.  brushing with a metallic or non-metal powder.  Alternatively, the pore closing can be effected by a sealant, esp. one based on poly-methylmethacrylate or epoxy resin. USE/ADVANTAGE - Useful for mending steel tanks coated with enamel, as used in the food industry. Cheap and simple method.
Patent DE-4027193-A1 (DE)
Title: Ink printing head refill avoidance - has added additive to destroy electrothermal transducer elements
Inventor: GERHARDT THOMAS
IPC: C09D11/38
Filed: 1990-08-28
Abstract: In a method for avoiding the undesirable refilling of disposable ink printing heads in ink printing appts., with a storage tank contg. the ink fluid and with a multitude of electrothermal transducer elements, and with an ink canal, where in the printing appts. the ink fluid is locally heated so that ink drops from outlet nozzles of the ink canals are expelled, where the ink fluid is mixed with an additive which chemically corrodes the electrothermal transducer elements, and after reaching a predetermined value of directing impulses, destroys them. The duration of the electrothermal transducer elements is set by the concn. of the additive. The concn. of the additive is chosen such that after consumption of the ink fluid in the storage tank the electrothermal transducer element is destroyed. The additive is pref. an organic or inorganic salt, esp. lithium acetate (CH3COOLi) in a concn. range of 200-10 mmol/l. USE - Useful for avoiding refilling of disposable ink printing heads, eg for bubble jet printing.
Patent DE-4029344-A1 (DE)
Title: Safety switch unit - has interlock mechanism to prevent accidental operation
Inventor: KOELLER ALFRED
IPC: H01H9/28
Filed: 1990-09-15
Abstract: The safety switch unit has an actuator (3) that is set into the housing and is controlled by a blocking element (5) that is mechanically latched into position and can only be removed when an interlock element (6) is moved to displace the actuator. In the secured position a lock (10) is passed through holes (11, 12) in the blocking element and interlock. When removed the blocking element can be retracted if the interlock is displaced such that the tip (7) is free. ADVANTAGE - Protects against inadvertent operation of switch.
Patent DE-4035163-A1 (DE)
Title: Ignition coil for IC engine - has coils pre-mounted in housing with apertures in two sidewalls for insertion of magnetic core
IPC: H01F27/02
Filed: 1990-11-06
Abstract: The ignition coil has an isolating housing (1), a h.v. dome (8) and an associated magnetic loop for primary and secondary connection of the contact plug (6). The insertion  opening is perpendicular to the central axes of the spools (3, 4) and its base is parallel to the input opening of an aperture (11) for the secondary connection rod (12, 13) to pass through. Two side walls of the housing (1) have openings (14) through which the magnetic cores (e.g. 7) pass. The spools (3, 4) are inserted in the housing at right angles. The contact plug (6) is held by the secondary spool for secondary connection, is compressively aligned with the aperture (11) and is surrounded by the dome (8). The spools (3, 4) are between side wall openings (14) and the front (17) of the primary spool body (3). USE/ADVANTAGE - Can be completely assembled beforehand as complete unit and inserted in housing and then left.
Patent DE-4036256-A1 (DE)
Title: Porous electrodes for catalytic conversion - comprises mixt. of carbonyl-metal and heavy metal coated carbon@ powder dry pressed into support and bound by subsequent plating
Inventor: DIVISEK JIRI DR
IPC: H01M4/86
Filed: 1990-11-14
Abstract: Porous electrodes are made by dry pressing a mixt. onto a suitable support. The dry mixt. consists of a carbonyl metal with a small particle size, high compaction density and high slip resistance, and a powdered component which is catalytically active or can be activated e.g. by a caustic treatment. It is pressed into the surface of the support, consolidated by plating and, if required, activated. The feature is that the catalytic component is at least in part a catalyst coated C powder, pref. coated with 1-5% Pt. - The catalyst pref. has a large active area and a grain-size of up to 100 micron, and may be mixed with up to 50% active metal, especially Raney Ni. It pref. represents at least 2 wt.% of the mixt., and pref. about 50% by vol. To the mixt. is pref. also added a filler which can be removed by dissolution, e.g. rock salt, with a grain-size of up to 100 micron, which is removed before plating. A suitable support is a Ni perforated foil which has been roughened by plating with Ni-carbonyl.
Patent DE-4040525-A1 (DE)
Title: Cordless speech transmission accessory for telephone appts. - has detachable mobile part having microphone and rechargeable batteries for speech transmission to fixed part having loudspeaker
Inventor: LEITNER RUDOLF
IPC: H04M1/72502
Filed: 1990-12-18
Abstract: The accessory is switchably connected to a telephone terminal (FS) having a dialling device and handset (HA). The accessory comprises a fixed part (FT) into which a mobile part (MT) may be plugged. When the mobile part is removed, it remains in contact with the fixed part via a radio link for communication with a remote subscriber. The remote subscriber can be heard from a loudspeaker (L) in the fixed part. The removal of the mobile part causes a h.f. receiver (HFE) and an l.f. amplifier (NFV) in the fixed part to be coupled to a supply voltage from a mains adaptor (SN). When inserted, rechargeable batteries (LB) in the mobile part are charged, the state of charging being indicated by an LED indicator (LD). ADVANTAGE - Applicable to any telephone appts. No acoustic feedback problems.
Patent DE-4105109-A1 (DE)
Title: Self-cleaning filter for fluids - which jets interior from turbine structure automatically covering entire clogged surface
Inventor: SPAGNOLLI AGOSTINI
IPC: B01D29/15
Filed: 1991-02-19
Abstract: The filter cartridge esp. for water, in a bowl holds a rotatable turbine-type slider mounted on a hollow shaft and mobile via a central control shaft. In normal filtration position, water leaves via a base valve for scouring the filter interior free of accummulated material, water is directed to flow from an internal bore and apertures to emerge as multiple jets from nozzles. Reaction force causes the blades to rotate, with the springs repeatedly covering the entire interval filter surface, directing discharged material to the outlet valve. Normal filtration is restored by operating the plunger. The hollow bladed body can be formed by pressing in two. ADVANTAGE - Filter cleaning is effective and rapid.
Patent DE-4110722-A1 (DE)
Title: Suction dredging system for waterway - has crane deployed suction head which feeds slurry into vessel mounted separation tanks, where silt is stored for water collection
Inventor: BULGARU SAVILICA
IPC: E02F3/94
Filed: 1991-04-03
Abstract: The equipment spread consists of two hulls (1) which are interconnected. Propulsion is provided by a system of paddle wheels (4). A crane (6) deploys a collecting head (7), around which a series of jets (11) are arranged. The jets agitate the silt, or other material to be collected into a slurry. A suction pipe at the centre of the head lifts the slurry and feeds it in a series of settlement tanks where the silt settles out for later collection. USE - Dredging of bottom of lakes, rivers, harbours etc.
Patent DE-4112752-A1 (DE)
Title: Double conical frustum coupler for synthetic optical fibres - exploits total internal reflection at internal surface of cone for bidirectional mixing pref. in near infrared
Inventor: CHILLE WOLFGANG DIPL ING
IPC: G02B6/28
Filed: 1991-04-19
Abstract: The coupler (K) is mfd. of polycarbonate or PMMA in the shape of two truncated cones joined coaxially at the smaller ends, leaving pref. circular larger ends (S1,S2) in parallel planes filled as completely as possible by the fibres. The slop (alpha) and length of each cone are chosen so that light entering each fibre from one end is distributed uniformly over the opposite end, for optical mixing in both directions. USE/ADVANTAGE - In e.g. motor vehicles or machine tool installations. Coupler is easily and reproducibly mfd. irrespective of lengths of fibres.
Patent DE-4113029-A1 (DE)
Inventor: STUTE MANFRED DIPL ING
IPC: F04D15/02
Filed: 1991-04-20
Abstract: The multi-stage rotary pump proposed has a first normally priming rotary-pump stage and subsequent self-priming stages. In order to improve the self-priming capability and waste-escape security of the pump, in particular when fluids are being pumped at temperatures near their boiling point, a liquid reservoir (13) of sufficient size is located between two pump stages, the connection between the reservoir and the preceding stage being located in the geodetic upper section of the reservoir. The delivery-side housing wall (22) of the pump stage located before the reservoir (13) is at the same time the partition which delimits the reservoir (13) on the low-pressure side. This makes it possible to design the pump with a short longitudinal length. Located between the liquid reservoir (13) and the preceding pump stage is a seal (16) which seals the shaft gap.
Patent DE-4121717-A1 (DE)
Title: Eccentric scroll pump - has rotor connected to drive unit and feeding hopper with storage space at base for handling highly viscous material
Inventor: WEHLING WERNER DIPL ING
IPC: F04C11/00
Filed: 1991-07-01
Abstract: Eccentric scroll pump having a stator (20)with a rotor (22) connected to a drive unit, the free end of which is joined to an opening (44) n the housing (46) of a feeding hopper (40). A vertical shaft (54) is surrounded by a helix (62) and the hollow base (47) of the housing forms a collection space (A) beneath an intake area (E) for the storage of the material being fed into the hopper. ADVANTAGE - Ensures a steady delivery flow between the stator and the rotor.
Patent DE-4122738-A1 (DE)
Title: Pulse counter for key entries to pocket calculators - uses panel with additional key input for each calculator
Inventor: BRESSLEIN HELMUT
IPC: G06F15/02
Filed: 1991-07-10
Abstract: A number of calculators (14-18) are mounted on a panel (13). A number of separate push button inputs (A-E) are supported on the panel, each with a coupled actuator element (A'-E') that operates the add sign key of the calculator. Each calculator registers the required number of pulses when a number key and the add sign key are operated. The unit may be reconfigured to provide subtraction of pulses for each entry if required. ADVANTAGE - Simplifies counting of key entries.
Patent DE-4125763-A1 (DE)
Title: Dynamic stabilising of radial compressor impeller - using circumferential ribs to control movement of leakage flow
Inventor: SCHWAB GUENTER DR ING
IPC: F04D29/66
Filed: 1991-08-03
Abstract: The arrangement is for the dynamic stabilising of a radial compressor impeller. The impeller assembly (1) has blades (2) and discs (3) which are spaced from a housing cover (4) by means of a sealing gap (5). Several circumferentially spaced flow conducting elements (8) in the form of ribs (11) are provided in the gap region of the widened area (6) which are connected to the housing cover and which fill up the widened area in cross section up to a minimal gap (9). USE/ADVANTAGE - Stabilising system in which the circumferential speed components of the leakage flow between the impeller and the housing are prevented from entering the radial labyrinth, such that a gap excitation effect is avoided.
Patent DE-4127077-A1 (DE)
Title: Outdoor cooker with burner and windshield fitting inside each other - has lid, with protuberances on inside of truncated cone-shaped windshield.
Inventor: THIELE WALTER
IPC: F24C1/16
Filed: 1991-08-16
Abstract: The outdoor cooker consists of at least one cooking-pan (1), a burner surrounded by a truncated-cone shaped wind-break (1) supporting the pan. The pan, burner, and windshield fit inside each other both when not in use and when in use, and have a lid (13) usable as a pan. The larger circular area of the windshield is open and takes the pan. The inside of the conical outer surface has protuberances (1) distributed over the periphery as supports for the pan. The upper part of the pan is cylindrical, and has a truncated cone-shaped tapering part (24) between the side (22) and the bottom (23). USE/ADVANTAGE - The outdoor cooker has an efficient one-piece windshield which guides the flames or heated air/gas mixture.