baber/WOPTO huggingface dataset:
Patent DE-3129806-A1 (DE)
Title: Fluid mechanical heart valve
Inventor: HEDDERGOTT ALFRED DIPL ING
IPC: A61F2/24
Filed: 1981-07-29
Abstract: The fluid mechanical heart valve comprises a disc-shaped basic body (1) which has an opening provided with a non-return function for the blood flowing through it, the opening being exposed in one position for the blood flowing through it and closed in the other position. In order to achieve as far as possible the flow conditions prevailing in a natural heart valve in an artificial heart valve too, the opening forms a free jet nozzle (6) and is designed without a valve body. The opening in the basic body (1) is adjoined by at least two complementary, mobile hinged walls (2,3) which are mounted so as to be pivotable to a limited extent essentialy about their articulated shaft on the basic body (1) and, in the open position, permit a free jet of the blood to form and, in the closed position, prevent the blood from flowing back. <IMAGE>
Patent DE-3136849-A1 (DE)
Title: Illuminating device for visual inspection (examination) of non-planar, reflecting objects
Inventor: SCHNEIDER RICHARD DR RER NAT
IPC: G01N21/88
Filed: 1981-09-16
Abstract: In the visual inspection of tinned printed conductor surfaces, commercially available viewing aids deliver an unsatisfactory image, since the reflecting, curved tin surface reflects only a portion of the incident light into the optical system of the viewing device or into the human eye, with the result that the viewer cannot clearly detect the entire surface. An illuminating device is therefore proposed by means of which the object (2) can be uniformly illuminated from a solid angle which is as large as possible but which is smaller than a hemisphere. This is achieved when a light source (3) which is arranged above the object (2) and has a diffusing screen (10) in front of it irradiates a field stop (lens) (11) which is projected onto the object (2) with the aid of a condenser lens system (12). <IMAGE>
Patent DE-3138257-A1 (DE)
Inventor: BECKER KLAUS DIPL ING
IPC: G10K11/02
Filed: 1981-09-25
Abstract: 1. An electronic gong (1), in particular a door gong with an electronic sound generating module (2) and a loudspeaker system (3) electrically arranged downline thereto for reproduction of the sound, which is acoustically connected to two tubes (19) whose air columns show an acoustic resonance response with at least one tone of the sound generating module (2)/loudspeaker system (3) and whose membrane is arranged as a partition between two sound volumes, characterised in that the tubes (19) are arranged coaxially to each other so that a casing tube (4) is produced which is open on both sides, between whose ends, the loudspeaker system (3) is arranged so that it can slide in longitudinal direction (5).
Patent DE-3145530-A1 (DE)
Title: Gas heating appliance
Inventor: PRUEFER PETER ING GRAD
IPC: F23J15/02
Filed: 1981-11-17
Abstract: In a gas heating appliance, the combustion takes place in the region of a heat exchanger. The heat recovered from the waste gas by subsequent cooling is supplied to the heat exchanger. The degree of efficiency of the gas heating appliance is improved in that the heat exchanger has a water-filled container, the heating gases entering the water of the container directly and also in particular the combustion taking place in the water.
Patent DE-3203857-A1 (DE)
Inventor: LENZE FRIEDRICH DR
IPC: F16L15/00
Filed: 1982-02-03
Abstract: A pin member with conical thread is threaded into a box or sleeve member having matching conical threading with abutment of the end of the box or sleeve against a shoulder on the pin member; that shoulder is continued into a groove in the pin member receiving a conically distorted polytetrafluoroethylene ring sealingly cooperating with a frustoconical surface of the box or sleeve member near its abutment end. The ring has been placed into the groove after having been heated to a temperature above the crystalline/amorphous transition temperature but below the liquification and decomposition temperatures.
Patent DE-3203874-A1 (DE)
Title: Spark plug for internal combustion engines
Inventor: LINDNER ERNST DIPL ING
IPC: H01T13/54
Filed: 1982-02-05
Abstract: The spark plug (2) is intended for internal combustion engines and has an ignition chamber (11) which is connected via a transfer passage (28, 12) to a main combustion space (13) of the internal combustion engine and contains ignition electrodes (7, 29). The ignition chamber (11) is designed as an annular space. The transfer passage (28) opens essentially into the centre plane of the cross-section of the annular space (11), mutually adjacent swirl rings (33, 34) comprising quantities of fuel/air mixture which have flowed in circulating in opposite directions. In relation to their volume, these swirl rings (33, 34) have very small cross-sections, with the result that very high centrifugal accelerations occur in them and within their quantities of mixture each effect a very pronounced charge stratification. Ignition takes place close to one wall (29) of the ignition chamber (11), where the swirl rings (33, 34) form a stagnant zone (35). Within the stagnant zone (35), highly fuel-enriched mixture is virtually at rest, with the result that its ignition takes place with great reliability and the subsequent development of the flame progresses quickly. In the transfer passage (28), there is a glass window for the analysis of the development of the flame. The surface of the window lies in the region of high gas velocities and as a result is kept free of dirt deposits. <IMAGE>
Patent DE-3211553-A1 (DE)
Title: Endless transport band for transporting margin-perforated recording carriers
Inventor: ALTENBURG HELMUT
IPC: B41J11/30
Filed: 1982-03-29
Abstract: Endless transport bands are used for transporting margin-perforated paper webs in printing machines. The aim of the invention is to provide an endless transport band made of flexible plastics which is made in one piece and the elongation of which under high tensile stress is prevented. The object of the invention is to design the band parts of the endless transport band which are especially susceptible to elongation in such a way that, under a possibly high tensile stress, the flexibility of the endless transport band is not diminished. The essence of the invention is that bearing bosses are arranged on the band part of the endless transport band located on the driven side, that a web encircling the endless transport band and connecting the bearing bosses and sprockets is provided, and that the band part is made wider than the teeth of the endless transport band.   <IMAGE>
Patent DE-3214788-A1 (DE)
Title: Magnetic-force welding machine
Inventor: EHRENSTEIN VOLKER V DIPL ING
IPC: B23K11/11
Filed: 1982-04-21
Abstract: In a magnetic-force welding machine, the electrodes or the workpieces (2, 5) are moved towards one another to initiate a current flow or an arc. After the current flow starts or after an arc develops, a magnetic force is suddenly applied to the electrodes or the workpieces (2, 5), a fixed electrode magnet system (9, 10) being provided in order to obtain the magnetic force. Since the entire welding current flows through the magnet system (9, 10), this magnet system (9, 10) has only a few windings so that the magnetic force acts only during the brief time of the welding current. According to the invention, an intensified magnetic force lasting for a longer period can be obtained by an additional second coil (17) being provided which has more windings and is loaded with a higher voltage.   <IMAGE>
Patent DE-3226034-A1 (DE)
Title: Method for processing a continuous-tone image
Inventor: KAMIZYO EIJI
IPC: H04N1/405
Filed: 1982-07-12
Abstract: A continuous-tone processing method for a digital facsimile device has been created in which the so-called dither method is used and in which a threshold level can be changed for any desired number of picture elements in the horizontal scanning direction. The threshold level can be optionally changed at every subsequent picture element, for in each case two picture elements, for in each case three picture elements and for in each case four picture elements.
Patent DE-3226358-A1 (DE)
Title: Device for the releasable fastening of a sail mast to a hull
Inventor: GRIESHABER HANS
IPC: B63B35/79
Filed: 1982-07-14
Abstract: A device for the releasable fastening of a surfing sail mast to a surfboard, with a pin which can be inserted into an opening in the hull, which device is distinguished by the fact that the pin has an eccentric cam which emerges from the peripheral contour of the pin upon rotation and presses against the inner wall of the opening in the surfboard so that the pin is thereby locked inside the opening.
Patent DE-3235137-A1 (DE)
Title: Process for the production of liquid milk replacement feed
Inventor: REMMERT KARL-HEINZ
IPC: A23L29/269
Filed: 1982-09-23
Abstract: A process for the production of liquid milk replacement feed having a very good storage life and very small tendency to sedimentation is described. Solid milk replacement feed, sorbic acid or potassium sorbate, an acid or an acid salt and, furthermore, xanthan are dissolved or suspended in water. The addition of xanthan prevents the flocculation of casein which would otherwise occur because of the relatively low pH.
Patent DE-3236547-A1 (DE)
Title: Mouthpiece outlet of mechanical screwdrivers, impact screwdrivers, riveting hammers and the like
Inventor: FEHLINGS HERBERT
IPC: B21J15/32
Filed: 1982-10-02
Abstract: In the known mechanical screwdrivers and the like, the fed screws and the like are held and centred in the bottom of the mouthpiece by a collet and pushed through the collet by downwardly moving screwdrivers and the like. The collet possesses a sleeve of resilient material, having a plurality of axially parallel slots running from the free end until just before the mouthpiece. The flap clamping jaws thus formed are bent slightly inwards at their free end. In practice, individual clamping-jaw flaps are found to break. To eliminate this disadvantage, it is proposed that the collet consists of a plurality of clamping jaws which possess, at their ends facing the mouthpiece, projections for suspending the clamping jaws in a corresponding projection of the sleeve, and a ring of elastic material is arranged in the sleeve, the elastic ring being pushed by the mouthpiece onto the projections of the clamping jaws upon connection of the mouthpiece to the sleeve.
Patent DE-3244373-A1 (DE)
Title: Plant for air heating
Inventor: TRUEMPER HEINRICH
IPC: F24D9/00
Filed: 1982-12-01
Abstract: The present invention relates to an air heating and exhaust air or flue gas discharging plant using a heat source to feed a reservoir, which for its part meets requirements for tapped water or feeds a hot water central heating system. The flue gas delivered from the heat source is further cooled down by a flue gas heat exchanger, and this heat exchanger acts to heat the air in the region of the air heating system. An air withdrawal connection is provided downstream of this heat exchanger and can withdraw exhaust air from any room for mixing with the flue gas. Since this exhaust air has a lower moisture content than the flue gas downstream of the heat exchanger, a reduction of the moisture in the flue gas/exhaust air mixture is achieved. A flue gas/exhaust air fan is provided downstream of the place where flue gas and exhaust air are merged together. The main field of application of the invention is the heating and ventilation of detached houses and apartment blocks.
Patent DE-3300453-A1 (DE)
Title: Device for controlling a safety valve
Inventor: TIEFENTHALER EDELBERT
IPC: F16K17/10
Filed: 1983-01-08
Abstract: The device (10) has an auxiliary valve (39) which is loaded by a predetermined force in its closing direction and which opens in the event of a pressure applied thereto corresponding to this force. A small piston (15) is allocated to the auxiliary valve (39), the two piston spaces (18, 19) of which small piston are connected to one another via a restrictor point (8). The one piston space (18) of the small piston (15) is connected directly to the space which is to be protected against excessive pressure by the safety valve (2), while the other piston space (19) is connected to the inlet flow side of the auxiliary valve (39). The cross-sectional area of the small piston (15) is larger than the area of the closing body (36) of the auxiliary valve (39) which is subjected to the pressure in the other piston space (19). The small piston is provided with a projection (24) in order that said small piston (15) can act in a force-fitting manner on the closing body (36) of the auxiliary valve (39). After an opening movement of the closing body (36), which results in a reduction of the pressure in the other space (19), the small piston (15) is moved against the closing body (36) and causes it to open further. At the same time, the servo-piston is relieved of stress on one side via a line (28) between the inlet flow side of the auxiliary valve (39) and the servo-piston space (7) which is to be relieved of stress. In consequence, the device can respond without oscillation and precise opening and closing of the safety valve are thus achieved. <IMAGE>
Patent DE-3302073-A1 (DE)
Title: Immersion bag for water purification
IPC: C02F1/68
Filed: 1983-01-22
Abstract: To produce an easy and convenient form of water purification which can also be used while travelling, the immersion bag is designed as a single-use device and disposable bag. The immersion bag containing the purification agent is immersed in the cold mains water for 5 minutes and, after being moved to and fro several times is taken out and thrown away.
Patent DE-3306012-A1 (DE)
Title: Process for the production of free-flowing paracetamol granules
Inventor: NOELTNER GERHARD
IPC: A61K9/16
Filed: 1983-02-22
Abstract: Process for the production of free-flowing paracetamol granules by fluidised bed spray granulation, which contain 2 to 20% starch or 1 to 5% hydroxypropylmethylcellulose as sole binder. The granules produced in this way can be used to produce pharmaceutical compositions.
Patent DE-3308967-A1 (DE)
Title: Valve or the like for hydraulic or pneumatic systems
Inventor: WEISS JOHANN
IPC: F16K1/54
Filed: 1983-03-14
Abstract: A needle valve for hydraulic or pneumatic systems having at least one flow passage, which is arranged between an inlet and an outlet for the hydraulic flow medium and opens close to the outer surface of a valve needle, there being, opposite the outer surface, an inner surface movable relative to it, a sleeve accommodating the valve needle or a corresponding element, is, on the one hand, to permit a very low flow rate and, on the other hand, also to be easily adjustable under pressure. This is achieved by the fact that the outer surface (88) of the valve needle (76) has at least one formed-in cam section (40), which encloses an angle (w1) of inclination with a radial plane through the valve needle, the radial plane preferably being defined by an annular edge (90) in the outer surface forming an annular surface (88). <IMAGE>
Patent DE-3310013-A1 (DE)
Title: Composite structure consisting of filter layer, drain layer and heat-insulation layer
IPC: E04B1/00
Filed: 1983-03-19
Abstract: The invention comprises a composite structure for building parts, which come into contact with earth, with pressure-transmitting insulation/drain panels for these applications: roof structures accessible to pedestrians and vehicles, cellar external walls, cellar floors. The composite structure makes possible the reversal principle, i.e. roomside sealing, external insulation and protection layers. Thus the main causes of cases of damage, for example in the roof region, such as condensate formation, or ice formation which destroys roof sealing and insulation layers, are excluded. As a result of the compression-proof properties of the composite structure, it is, in the case of roof surfaces which are accessible to pedestrians and vehicles, even accessible to heavy vehicles. Likewise, cellar external walls can also be effectively insulated and drained to great depths. A further application is underneath statically loaded floor panels or foundations. <IMAGE>
Patent DE-3319120-A1 (DE)
Title: Cable sleeve of material which can be shrunk, having an insert
Inventor: GIEBEL WOLFGANG DIPL ING
IPC: H02G15/18
Filed: 1983-05-26
Abstract: The invention relates to a cable sleeve of material which is constructed as a shrinking collar (1). Inside, it has heat-resistant inserts (6, 7, 8, 10, 11, 12) which, during shrinking, adapt themselves to the changing shape of the shrinking collar (1). <IMAGE>
Patent DE-3321788-A1 (DE)
Title: Pipeline fitting for chemically aggressive fluids
Inventor: SCHMIDT FRITZ
IPC: F16K27/02
Filed: 1983-06-16
Abstract: Pipeline fitting for chemically aggressive fluids, having a housing (2) and a flap (5), pivotally arranged therein, as closing element, with a sleeve (9) of chemically resistant plastic inserted in the housing in the region of the flap seat. The body (3) of the housing (2) is designed as one part. At least one two-part supporting body (10) is inserted in the sleeve (9) between the housing inside wall (29) and the sleeve (9). <IMAGE>
Patent DE-3323771-A1 (DE)
Title: Centrifugal mill
Inventor: KITSCHEN LEO DIPL ING
IPC: B02C17/08
Filed: 1983-07-01
Abstract: The cylindrical grinding drum rotates about its own axis and simultaneously on a rotation circle with constant rotation relationship about a stationary axis of rotation parallel to the drum axis. To prevent wear of the inner wall while maintaining good grinding properties, the internal diameter of the grinding drum is formed according to the formula <IMAGE>  wherein     D = internal diameter of the grinding drum   G = diameter of the rotation circle omega T = angular velocity of the grinding drum about its own axis   omega  = angular velocity of the axis of the grinding drum on the rotation circle about the axis of rotation S = desired layer thickness of the filling of the drum in the supercritical state.
Patent DE-3325220-A1 (DE)
Title: Light barrier
Inventor: TRAUB GERHARD
IPC: G01V8/18
Filed: 1983-07-13
Abstract: The invention relates to a light barrier consisting of a light source and an optoelectronic transducer (receiver) in a common housing, and of a reflector strip which is arranged opposite the light source in the direction of emission. Through the use of appropriate means, the light beam emitted from the light source is provided in a cyclically pivotable or oscillating fashion. Even objects of previously unknown shape and arrangement which pass the light barrier can be reliably detected, since an extended surface of the light beam is swept, and the monitoring of a passage on foot or by vehicle is not performed only in a one-dimensional, linear fashion along a few light beams emitted or reflected always in the same direction. In one embodiment, the housing is suspended so that it can be pivoted periodically using a motor drive.
Patent DE-3326975-A1 (DE)
Title: Folding ladder, in particular multipurpose ladder
Inventor: GRASS WERNER ING GRAD
IPC: E06C1/39
Filed: 1983-07-27
Abstract: A folding multipurpose ladder contains at least one pair of joints which interconnect associated uprights and which lock in preferred locking positions. Each joint contains two joint parts which are movable in relation to one another and one of which has a locking plate and the other of which supports longitudinally displaceably a locking piece which drops into the locking recesses of the locking plate. Provided concentrically with the hinge bolt interconnecting the two hinge parts is a spring-preloaded trailing plate which, in relation to the locking plate, is limitedly rotatable. In the event of a relative pivoting movement of the two hinge parts in the direction of a folding up of the ladder, the trailing plate is transferred from a first into a second position, in which extensions of the trailing plate make the locking recesses ineffective, while, when actuated in the opposite direction, the locking recesses are freed. In order to be able to use the same hinge parts for all hinges of the multipurpose ladder, the locking recess of the locking plate assigned to the locking position which is not required is constantly rendered ineffective by an extension of the trailing plate, which to this end bears a sliding surface which is situated at the level of the circumferential surface of the locking plate and accompanies the locking piece away over the ineffective locking recess on actuation of the joint.
Patent DE-3335929-A1 (DE)
Title: Grinding machine
Inventor: ALLERT KLAUS
IPC: B24B19/12
Filed: 1983-10-04
Abstract: The grinding machine for curve-shaped contours, in particular camshafts, is equipped with a table which is longitudinally displaceable on the machine bed, with a tilting support which is mounted on the table, bears the headstock with the spindle, which can be driven by a motor, and the tailstock, and has a tilting-support axis situated in the longitudinal direction of the table, and with a carriage which can be displaced by a motor transversely with respect to the spindle axis, which carriage bears the grinding wheel which is connected to a rotary driving means. The machine is characterised in that the spindle is connected in a driving manner to a first electric servomotor and the tilting support, or the headstock or tailstock arranged thereon, is connected in a driving manner to a second electric servomotor which generates the tilting movement, and both servomotors can be controlled by a predeterminable program while taking into consideration signals representing the current swivel-angle position of the workpiece and the position of the tilting support in its tilting travel. The machine can be adapted to different curve contours and cam shapes rapidly and with little work, in particular without conversion to a different master-shaft assembly. The known camshaft grinding machines equipped with a workpiece-tilting support and a mechanical copying device can be adapted to the new technique in a cost-effective manner.
Patent DE-3338761-A1 (DE)
Title: Ophthalmic pharmaceutical composition
Inventor: ECKE KARL
IPC: A61K47/14
Filed: 1983-10-22
Abstract: Published without abstract.
Patent DE-3339386-A1 (DE)
Title: Process for the preparation of variously derivatised succinic acids substituted in the 2-position
Inventor: KADELKA JUERGEN DR
IPC: B01J23/00
Filed: 1983-10-29
Abstract: Variously derivatised succinic acids substituted in the 2-position are prepared by reacting unsaturated carboxylic acid derivatives with carbon monoxide and with a nucleophilic component with at least one mobile hydrogen atom in the presence of cobalt compounds and, if appropriate, in the presence of one or more tertiary nitrogen bases at increased pressure and increased temperature.
Patent DE-3400023-A1 (DE)
Title: Mixing appliance
Inventor: SCHWARZ ERICH
IPC: B01F15/02
Filed: 1984-01-02
Abstract: A mixing appliance has a feed device, in which a feed pipe ends below the liquid level in the suction region of the stirring device. When the powder to be mixed in is fed through this feed pipe, the interior of the mixing vessel is under reduced pressure, so that as a result of the combination of the suction effect of the stirring device on the one hand and of the reduced pressure on the other hand, the powder, which is under atmospheric pressure, is subjected to a suction effect which is so strong that satisfactory mixing of the powder with the solution liquid can be achieved without the inner walls of the mixing vessel and/or of the cover being clogged with powder deposits. As a result of the virtually complete dissolution of the admixed powder in the solution liquid it is possible to keep, with a very high accuracy, to predefined solution concentrations or mixing ratios, which is very important in particular branches of industry.