baber/WOPTO huggingface dataset:
Patent DE-3844695-A1 (DE)
Title: Sewing machine with a control element
IPC: D05B69/36
Filed: 1988-06-04
Abstract: A sewing machine, which, in the event of a fault on the shuttle thread, makes it possible to produce a seam continuous on the seam top side, is to be designed in such a way that an uninterrupted thread run is also obtained on the seam underside. There is provided a control element which is connected via a first group of outputs to an actuator of the transport device and via a second group of outputs to the positioning motor of the sewing machine and of which the input signal generated as a result of the thread fault causes control commands to be issued to the actuator and positioning motor, in order to stop the needle bar preferably in its lower reversal position, to switch on the transport device for movement of the material to be sewn into the location corresponding to the last properly executed knotting, to stop the needle bar in its upper reversal position during the elimination of the fault, and thereafter to switch on its drive for at least one stitch-forming cycle, with the transport device put out of operation. The transport device is subsequently activated for a movement in the original direction. <IMAGE>
Patent DE-3901081-A1 (DE)
Title: Installation for carrying away flue gases
Inventor: SKOBERNE WILLI
IPC: F23J15/02
Filed: 1989-01-16
Abstract: In a building (1), a plurality of combustion places (2) are connected to a chimney (3) whose chimney opening (12) is closed. The flue gas is sucked off in the lower region of the chimney (3) by a flue-gas fan (8) via a flue-gas filter (5), a heat exchanger (6) and a flue-gas scrubber (7) and is fed to a flue-gas pipe (10). The flue-gas pipe runs upwards in the chimney flue (3a) and passes into the open air at the closed chimney opening. It is thus made possible, without considerable convertion work, to carry away the flue gas from a plurality of combustion places (2) in a cleaned and cooled state. <IMAGE>
Patent DE-3901606-A1 (DE)
Title: Process for the preparation of crosslinkable copolymers of propylene
Inventor: HASENBEIN NORBERT DR
IPC: C08K5/17
Filed: 1989-01-20
Abstract: The process for the preparation of crosslinkable copolymers of propylene at elevated temperature by reacting propylene with from 0.05 to 2% by weight of  alpha ,ss-ethylenically unsaturated carboxylic acids and/or esters thereof, or anhydrides thereof, characterised in that a multifunctional amine is added, as crosslinking agent, to the copolymer, the temperature and residence time are set so that an as yet uncrosslinked, but crosslinkable mixture is formed, and this mixture is rapidly cooled.
Patent DE-3911995-A1 (DE)
Title: Tool bit for precision chamfering of holes - has varying clearance angle giving high and consistent accuracy of chamfer
Inventor: HEULE HEINRICH
IPC: B23B51/10
Filed: 1989-04-12
Abstract: The tool bit (10) is fastened in a rotating tool holder which is passed forwards and backwards through the hole to allow shamfering of the front and rear ends. The tool bit is made from rectangular bar and has two cutting edges inclined to produce the required chamfer angles. The cutting edge is divided into a cutting and non-cutting section by grinding the clearance face with a positive clearance angle up to the maximum diameter of the required chamfer, and changing to negative clearance angle beyond this point.
Patent DE-3912386-A1 (DE)
Title: Variable-ratio vehicle transmission - incorporates planetary differential gear and two infinitely variable hydraulic machines
Inventor: HAGIN FAUST DIPL ING
IPC: B60K6/30
Filed: 1989-04-14
Abstract: The infinitely variable hydrostatic-mechanical transmission (1) is installed between the engine and the drive shaft (3).  It has an at least four-shaft planetary differential (4) with two sun-wheels (26,27). Two main shafts (10,13) form the input and output. At least two hydrostatic machines (5,6) operate alternately as pump or motor. In the planet differential (4), the power input (26) of the drive side main shaft (10) is positioned between the sun wheel (27) on the non-drive side shaft (11), and between the drive source (2) in front of the drive unit (1). USE - Compact infinitely variable transmission for vehicle. Transmission may also be used in a crane.
Patent DE-3917794-A1 (DE)
Title: Doppler rangefinder e.g. for proximity fuse - uses circulator emitting transmit and receive reflection signals and processes doppler value for closing distance
Inventor: BERTHOLD RAINER DIPL PHYS
IPC: G01S13/58
Filed: 1989-06-01
Abstract: In a first station there is an oscillator (1) for producing an output signal (fo) at a set frequency, and this is fed to the first input of a circulator (2). The second input of the circulator (2) is coupled to an antenna (3), and the third input to a mixer (4). This mixer (4) so combines the received signal from the antenna (3) with a part of the output signal, that at the output of the mixer, after filtering in a filter (5) there arises a signal with a frequency which corresponds to the Doppler frequency of the first station. USE - Determining ignition point of projectile, esp. from tank.
Patent DE-3925270-A1 (DE)
Inventor: GENSTER ALBERT
IPC: F16K11/074
Filed: 1989-07-31
Abstract: The invention relates to a rotary disc valve having a valve actuating element (7) which is in the form of a circular disc, is supported in the disc valve housing (1), can be displaced in rotation about its disc axis and, by means of at least one opening and/or recess on the actuating element, optionally connects to one another adjacent inlet and outlet openings, in particular chambers (16), to which connecting lines (14, 15) lead, there being arranged coaxially with respect to the disc axis in the disc valve housing (1) a channel (13) which passes through the actuating element (7) and opens in an outer, flat side surface (2) of the housing (1), which surface is at right angles to the channel (13), the housing, on the side facing away from the outer flat side surface (2), forming a second outer flat side surface (3), which is parallel to the first side surface (2), and into which two openings (D, E) open, and to which a device can be attached. <IMAGE>
Patent DE-3926421-A1 (DE)
Title: Seat for vehicles - made of specified lining for producing in polyurethane foam mould
Inventor: ROTH GUENTHER
IPC: A47C7/18
Filed: 1989-08-10
Abstract: The sitting surface of a seat for motor vehicles consists of the basic seat (1a) side bulges (1b) and side ends (1c). The parts (1) laid in the foaming mould for backfilling with PU foam (4) can be made of cloth, plastics or leather. A perspiration mat (2) and a PU foil (3) cover the (1a) area, and a lining (8) the (1b) area. Textile strips (6a,6b,6c) through which the PU foam can penetrate, are sewn in by quilted seams (5a,5b,7) to add to the stability of the foam structure. ADVANTAGE - This creates a vehicle seat with a functionally better design.
Patent DE-3928109-A1 (DE)
Inventor: MAISCH WOLFGANG DIPL ING DR
IPC: B60T8/32
Filed: 1989-08-25
Abstract: The pressure source (35) has a plunger piston (46) which immerses in a cylinder (47) filled with brake fluid and is connected to a geared rack (58). For propelling the plunger piston (46) an electric drive motor (60) is provided which by way of a toothed gearing (61) drives a pinion (59) meshing with the toothed rack. A helical spring (76), on one side engaging on the pinion shaft (66) and on the other supported on the pressure source housing (39) serves for return of the plunger piston (46). The use of the helical spring (76) makes it possible to achieve a short overall axial length of the pressure source (35). A free wheeling mechanism (68) is also provided in the drive train between the motor (60) and the toothed rack (58). This causes disconnection of the toothed gearing (61) and drive motor (60) when the toothed rack (58) at the end of the return stroke strikes a stop (43) on the pressure source housing (39). In this way damage to the gearing (61) and motor (60) is prevented. 
<??>The pressure source (35) is provided in a hydraulic vehicle brake system with a device for limiting drive slip. 
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Patent DE-3928698-A1 (DE)
Inventor: WULFF ALBRECHT
IPC: D06F58/38
Filed: 1989-08-30
Abstract: In a process for drying laundry and the like in a treatment chamber, heated fresh drying air is introduced into the treatment chamber and after drying and prior to evacuation, is entrained, together with newly-introduced fresh air, over a heat exchanger. The fresh drying air is preheated at a maximum setting of the heat output and then cooled at a lower setting in a second section at the entry to the treatment chamber and at an even lower setting of the heating power in a terminal section at the outlet from the treatment chamber in connection with non-maximal coolings. Simultaneously, partial cooling may be carried out during heat exchange with the fresh drying air before it is introduced into the treatment chamber.
Patent DE-3930896-A1 (DE)
Title: Polarisation protective circuit for DC consumer - has inversely operated MOSFET between earth input and output
Inventor: VOIGT ACHIM
IPC: H02H11/00
Filed: 1989-09-15
Abstract: The polarising circuit has a voltage input a coupled voltage output, an last input and output. Between the earth input (12) and output (13) in incorporated an inversely operated MOSFET (1), whose gate (6) is coupled to the voltage input (10). Pref. the circuit incorporates a voltage rise limiter (R1, 2), limiting a gate-source voltage to a preset steepmess.  The limiter assembly (R1, 2, Z1) defines a max value of the gate-source voltage, incorporating a Ziner diode (Z1). USE/ADVANTAGE - For DC consummer appliances in car etc, with low-cost mfr and low voltage drop.
Patent DE-3932486-A1 (DE)
Title: Neutron flux sensor for nuclear fuel recovery plants - is positioned and shielded for isolation from radiation from adjacent containers and background gamma radiation
Inventor: SCHOEN BERNHARD DIPL ING
IPC: G01T3/00
Filed: 1989-09-28
Abstract: A flux sensor (11) for measurement of the neutraon flux from a fluid nuclear fuel solution (9) in at least one container (18) has a fixed enclosure shield (12).  A neutron transparent window (16) provides a path for neutrons to the sensor.  The neutron flux sensor (11) is pref. a fission ionisation chamber device with a hydrogen gas environment.  The fissionable material coating of the sensor is pref. U-235. USE/ADVANTAGE - Recovery of uranium, plutonium and decay products from spent fuel elements.  The sensor is shielded from stray radiation from other containers and from background gamma radiation.
Patent DE-3933719-A1 (DE)
Inventor: KRENZ HORST
IPC: F24C15/02
Filed: 1989-10-09
Abstract: In a household appliance, e.g. an electric cooker, the cooking space is covered with a charging door. In order that, on opening the charging door, the latter does not fall into its end position with force and possibly damage the machine, it is envisaged according to the invention that the weight of the charging door (6) is at least partially compensated by one or more dampers (7). By means of the invention, it is brought about that, on opening the charging door, the latter inclines gently as far as the rest position. <IMAGE>
Patent DE-3934316-A1 (DE)
Title: Hair gel tube with comb teeth - has outlets near roots of teeth with closable covers
IPC: A45D24/22
Filed: 1989-10-13
Abstract: The hair gel tube (1) is made of extensible plastics the outside of which has a gel-applicator (2) and comb teeth (3). Near the roots of the teeth is at least one outlet (4) of suitable size for the hair gel. All the outside (4) are closed by a detachable closure pieces. The gel applicator surface (2) is formed of an outward-curved plate (6) made of suitable plastics or other material, such as metal, rigid plastics, horn etc. At least one outlet (4) is connected by a duct (7) in the plate and an opening (8) in the tube a casing to the inner compartment (9) of the tube. USE/ADVANTAGE - The hair gel is exactly and evenly metered out.
Patent DE-3935449-A1 (DE)
Title: Electric tea or coffee maker - has steam outlet for hot water reception space angled upwards relative to its base
Inventor: BEUMER KLAUS
IPC: A47J31/46
Filed: 1989-10-25
Abstract: The tea or coffee maker has water supplied to a through -flow water heater with a riser pipe leading to a reception space (29) containing the tea or coffee, with a discharge outlet at its base leading to a reception jug for the prepared drink and a steam outlet (40) extending at an angle to the base of the reception space (29). The steam outlet (40) may lie on the outside of the boundary wall (31) enclosing the reception space (29), with the steam supplied via a guide channel communicating with the interior of the reception space (29). Pref the steam outlet (40) lies on the opposite side of the tea or coffee maker to the manual on-off switch. ADVANTAGE - Safe release system.
Patent DE-3937786-A1 (DE)
Title: Internal prosthesis for hip joint - contains passage for cement insertion between it and bone
IPC: A61F2/46
Filed: 1989-11-14
Abstract: The internal prosthesis is cemented into position, having a system of drillings and/or passages. These are used when cementing to insert the cement between the bone and the prosthesis. Other drillings and passages (2) can be used to allow air to escape, or any blood trapped to be extracted. Escape of the cement in the distal direction can be prevented by a variable size umbrella type cap on the prosthesis. USE/ADVANTAGE - Ensures complete filling with cement and no trapping of blood.
Patent DE-3938458-A1 (DE)
Title: Flash A-D converter for video signals - uses comparators coupled via AND-gate to MOSFET inverter and N-channel transistor circuit
Inventor: MOTZ MARIO DIPL ING
IPC: H03M1/14
Filed: 1989-11-20
Abstract: The A/D converter uses comparators (K), reference voltage dividers, a clock source (8) and a decoder logic. An AND-circuit (1) receives output signals from a succession of comparators (K) and is coupled at its output to a complementary MOSFET inverter (2) and the gate of an n-channel transistor (4) connected to earth at its source and to the base of a NPN transistor (5) and to the source of a second n-channel transistor (3) at its drain. The gate of the second n-channel transistor (3) is coupled to the collector of the NPN transistor which is connected to earth at its emitter and to the emitter of a third NPN transistor (7). The clock source (8) is connected to an additional input of the AND circuit (1) and to the input of a delayed inverter (6) connected at its output of the base of the third NPN transistor. ADVANTAGE - Reduced dynamic power losses. (4pp Dwg.No.1/1)
Patent DE-3939191-A1 (DE)
Title: Multibeam one-way light barrier - uses diodes transmitting pulse-gap modulated pulses with route marking characteristic to monitor protected area
Inventor: HABERL PAUL
IPC: G01V8/20
Filed: 1989-11-27
Abstract: Contactless monitoring of a protected area is achieved by a transmitter (1) consisting of a series of i.r. diodes (2,3,4) periodically and cyclically switched on in sequence to transmit modulated light.  The receiver has a corresp. number of photodiodes operated periodically and cyclically and assigned to their own sender diodes. A multichannel evaluating unit in the receiver generates a signal meaning "Area not free", when at least one light beam is interrupted. Pref., the photodiodes are clocked by a free-wheeling oscillator. Pref., the evaluating unit synchronises the cyclical activation of the photodiodes on the basis of the light pulses received from a selected i.r.  diode (2). ADVANTAGE - Max. security even if one or several components develop a fault or there is external interference.
Patent DE-3940243-A1 (DE)
Inventor: MEISEL RONALD
IPC: B65H29/60
Filed: 1989-12-05
Abstract: In a device for deviating a stream of two layers of paper products arriving in a shingled formation in a vertical direction, a wedge-shaped deviating member, which extends at option into the shingled stream, can be pulled back from the shingled stream in the conveying direction with a speed exceeding the conveying speed of the stream. 
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Patent DE-3940969-A1 (DE)
Title: Sub-calibre heavy metal penetrator has triangular section - over at least length covered by jettisonable sabot components
Inventor: SIPPEL ACHIM DIPL ING
IPC: F42B12/06
Filed: 1989-12-12
Abstract: Penetrator projectile against armoured targets is long and slender with length:dia. ratio at least 15:1 and made of frangible heavy metal, esp. tungsten. For firing from normal calibre weapons, the projectile (20) over most of its length i.e. apart from nose and rear portion is enclosed in fitted components . assembled to form a sabot which drops away after firing. Within the length covered by the sabot the projectile has a cross section which is not rotationally symmetrical and pref. triangular.  The triangular section may have concave or convex walls matching similar sabot components. Both the penetrator tip (28) and the rear section (30) carrying guide fins may be of round or other rotationally symmetrical section. External ribs/grooves on projectile and sabot components provide temporary positive engagement. ADVANTAGE - Flexural strength is higher than for a known penetrator of equal length and mass but with circular cross-section throughout.
Patent DE-3941490-A1 (DE)
Title: Sweet e.g. for sports players providing minerals - comprising fruit-gum or chewing-gum core with sugar coating contg. minerals and salts
Inventor: MEDERER HERBERT
IPC: A23G3/26
Filed: 1989-12-15
Abstract: A sweet, whose external appearance may be that of a football golf ball etc, to provide visual attraction, has a core of fruit-gum or chewing gum. The core is uniformly surrounded by a sugar coating contg soluble minerals of physiological value, esp one or more of sodium citrate, sodium chloride, calcium citrate, calcium chloride, sodium phosphate or magnesium carbonate. Vitamins may also be included in the coating, whose binder includes glucose or other sugar or sugar syrup. USE - Esp for sports-players, making up mineral dificiencies without taking large vol of liq.
Patent DE-3942473-A1 (DE)
Title: Different gear for motor vehicle transmission - has hydrostatic self-locking planet pinions to limit speed differentials
Inventor: KOERNER TILLMANN DR
IPC: F16H48/26
Filed: 1989-12-22
Abstract: The differential drive for a motor vehicle consists of a housing formed in two similar parts (13) which are bolted together with a ring gear between the joint faces. The ring gear (3) has external teeth which mesh with the driving pinion (2).  The differential drive has two output shafts. The first output shaft (4) is formed integrally with the sun wheel (6) whilst the second output shaft (5) is formed integrally with the cage which carries the planet gears (8, 9). The planet gears (8, 9) are arranged in pairs with the members of each pair meshing with each other. One member (8) meshes with the sun wheel and the other meshes with the internal teeth of the ring gear. The housing (13) contains a liquid and the planet pinions function as a gear teeth pump. The pressure generated by the planet pinions increases with the difference in SlW0en lhe lWO Output ShaftS nd lOCks the planet pinions to limit this difference in speed. USE - Motor vehicle transmission systems.
Patent DE-4004224-A1 (DE)
Inventor: SCHMIDT HARALD HANS PROF
IPC: B29C45/20
Filed: 1990-02-12
Abstract: A multi-cavity valve gated injection molding system. The pneumatic actuating mechanism to reciprocate each elongated valve member (70) includes a piston (90) which reciprocates in a cylindrical opening (92) through a cylinder plate (12). A sealing bushing (56) which is mounted around each valve member (70) has a flanged portion (66) which bridges an insulative air gap (68) between the manifold (10) and the cylinder plate (12). Thus, the sealing bushing (56) forms part of the piston cylinder (92) as well as sealing against melt leakage around the reciprocating valve member (70). The piston (90) has a circumferential outer band (114) formed of a graphite alloy seated in a groove (116) formed between a front portion (104) and a removable rear plate portion (110).
Patent DE-4006664-A1 (DE)
Title: Roof structure for hall construction - has bearing inner shell of steel plates with inwardly facing, hollow, hole-free trapezoidal ribs
IPC: E04D13/16
Filed: 1990-03-03
Abstract: The structure incorporates a check layer of plates and a roof skin which are joined to each other. The check layer (3) is directly or indirectly connected to the steel plate components via elastically deformable components (6) and the trapezoidal ribs (2), at least over a part of their rib depth, are filled with granular material (5). The check layer is made of cement fibre plates and/or plaster fibre plates. The elastically deformable components are formed as upwardly open channel-shaped hollow profiles (6) of metal or plastics, and are located on connecting extensions (7) between the trapezoidal ribs. The hollow profiles (6) are also filled with granular material, (5) at least over a part of their depth. USE - As a roof structure for large halls.
Patent DE-4007596-A1 (DE)
Title: Water-miscible cpds. with alkylene oxide units and quat. ammonium gps. - obtd. by quaternisation of tert. amine(s) with alkyl halide(s), sulphate(s), phosphate(s), etc. then with epihalohydrin(s)
Inventor: BOHLANDER RALF DR
IPC: C09K23/18
Filed: 1990-03-09
Abstract: Water-sol. or -dispersible cpds. (I) contg. alkylene oxide units and quat. ammonium gps. are claimed; (I) are obtd. by quaternisation of tert. amines of formula R1R2R3N (II) with 1-22C alkyl halides, benzyl halides, di-(1-22C alkyl) sulphates, tri-(1-22C alkyl) phosphates, 1-22C alkyl tosylates and/or epoxy cpds. (III), followed by reaction with epihalohydrins and reaction of the cpds. obtd. (opt. in combination with halohydrins contg. no quat. ammonium gps. (IV)) with ammonia, 1-22C alkylamines, aliphatic di- and/or poly-amines and/or amino-sugars (V); R' = (AO)-H (with AO = 1-95 alkylene oxide units, comprising 0-60 C2H4O units (EO) and 0-35 C3H6O units (PO)); R2, R3 = R' or 1-22C alkyl with or without OH, NR4R5 and/or NHCOR6 gps. (with R4, R5 = H or 1-4C alkyl; R6 = 1-21C alkyl).
Patent DE-4009017-A1 (DE)
Title: Ignition units fastener for cylinder head cover - retains edges of neighbouring units by opposite ends of spring clips screwed to partitions
Inventor: STILLER JIRI
IPC: F02P3/02
Filed: 1990-03-21
Abstract: The ignition units (2), each incorporating an ignition coil and a sparking plug connector, are fitted into the spaces between steps (19) on adjacent partitions (12) which subdivide the region between the end walls (10) of the camshaft covers. The edges (22) of adjacent units (2) are held down by the ends of double-or single- ended spring clips (17,18) secured to the tops of the partitions (12) by screws (16) having an upper threaded section (36) and a lower hexagonal section (34). ADVANTAGE - Ignition units are easily removable after slackening of the screws enabling clips to be turned through 90 deg.
Patent DE-4009158-A1 (DE)
Title: Break out device for waste pieces from stamped sheet - has upper and lower former and flexible foil which limits force of break-out rod
Inventor: SERR PAUL
IPC: B26D7/18
Filed: 1990-03-22
Abstract: The device is used to break out the waste pieces from a stamped sheet. It consists of an upper (1) and a lower (5) former. The upper former incorporates a carrier device which holds several break out rods (3) with pointed ends (4). The lower former (5) has a plate (13) to carry the stamped sheet (6), with an opening (8) under each break out rod (3). A matrix (11) is fixed on the lower plate (13), which forms the projecting edges (9) of the opening (8). Between the matrix (11) and the lower plate (13) is a flexible intermediate layer (12) which forms a pliable rim (14) against which the waste piece falls. USE/ADVANTAGE - The waste pieces are removed without distorting the stamped sheet.