baber/WOPTO huggingface dataset:
Patent DE-4032407-A1 (DE)
Title: Projectile accelerator using electrothermal propulsion -  includes combustion chamber in which plasma is produced by ignition of electric arc between two electrodes
Inventor: ZOCHA KLAUS DR RER NAT
IPC: F41B6/00
Filed: 1990-10-12
Abstract: Two ignition electrodes (16,17) separated by a spark gap (2), are mounted at the plasma burner (3) to replace the conventional switch in the external circuit (7). The distance of the ignition electrodes for producing the electric arc in the combustion chamber (3) is designed, such that an arc in the plasma burner (3) only results by a sufficiently large number of charge carriers. An ignition electrode (16), together with an electrode (6) for producing the arc, is provided in a common switching circuit (18) with an ignition voltage source (19). Upon failure of the coil (9) provided for the arc prodn. of the electrodes (5,6), a capacitor (14) is provided with a self-inductance dimensioned for a long pulse duration. ADVANTAGE - Circuit outside plasma burner is essentially simplified, with redn. in wt. and space required.
Patent DE-4033250-A1 (DE)
Title: Internal mixer for unvulcanised rubber with shearing disc feed rolls - has integral construction for improved cutting, premixing, optionally with additives, and energy redn.
Inventor: MOESSINGER JUERGEN DIPL ING
IPC: B29B15/02
Filed: 1990-10-19
Abstract: Internal mixer for mixing or compounding unvulcanised rubber with structurally-integral arrangement of intermeshing nip rolls (shearing discs), at least one of which is serrated, feeding directly to the feed hopper. Bales of raw rubber are fed on a horizontal conveyor to the nip rolls which shear them into strips to fall by gravity into the mixer. The rolls are at an angle to each other of 0-90 deg., pref. 30-45 deg., to the vertical, and are pref. of different mean dia.. ADVANTAGE - The nip roll assembly is integral with the mixer, promoting gravity feeding and conserving the heat produced by the cutting energy, so reducing the energy consumption in the main mixer. Unequal nip roll diameters are claimed to improve feeding of the bale through increased contact surface between rolls. Additives, esp. carbon black, may optionally be fed directly and simultaneously to the nip rolls, giving considerable pre-mixing before the main compounding unit. As a consequence of pre-heating by cutting and pre-mixing, the same cpd. quality can be achieved with smaller rating of main drive. The integral construction avoids intermediate storage of the cut rubber. (0/1)
Patent DE-4033458-A1 (DE)
Title: Rotary tool with hub and tool ring
IPC: B24D13/10
Filed: 1990-10-20
Abstract: The rotary tool has a drive hub (N) and an interchangeable linking sleeve (H), or brush rings. The drive hub consists of a drive flange (1) and a securing flange (2). The drive flange has an axially projecting coaxial lug (3) for connecting to a drive motor.     One flange has a ring of axially projecting tubular elements (4), which engage corresp. lugs (5), projecting axially from the other flange. The two flanges are fastened together by a snap action lock on one flange with claws (10), which engage a shoulder (9) on the other flange.
Patent DE-4040470-A1 (DE)
IPC: B23Q3/16
Filed: 1990-12-18
Abstract: On a machine frame (2), a metal-cutting band saw (1) carries a swivel support (5) which is pivotably mounted about a vertical axis. The swivel support (5) carries a saw frame (7) which is movable about a horizontal axis and contains two deflection discs (19, 20) axially parallel to one another. An endless saw band (21) runs around the deflection discs (19, 20). A vice having two jaws (32, 35) serves to hold the workpiece in place. So that mitres in which the acute angle of the cut surface lies on the side of the vertical axis can be cut without turning over the workpiece, the machine frame (2) is provided with a longitudinal guide (42) whose longitudinal axis forms a second axis which is at right angles to the first axis, at least one part (35) of the vice being adjustable along the second axis by means of the longitudinal guide (42). <IMAGE>
Patent DE-4104084-A1 (DE)
Title: Optical data transmission system for subscriber connecting areas with optical amplifiers - involves central control with two-way TV and data signal exchange with star-star structure
Inventor: OHNSORGE HORST DR ING
IPC: H04J14/02
Filed: 1991-02-11
Abstract: The network employed is of the lightwave/conductor type with star-star structure, in which between successive branch points fibre-optic amplifiers (10, 11) are available. The data signals to be distributed are transmitted via the light wave conductor network to the subscribers on a first wave length (lambda1). The individual data signals to be transmitted to subscribers (Ti) from the central control (1) are converted by frequency modulation into another frequency band (FB2) which differs from that of the distribution signals and are transmitted to the subscribers at the same wavelength as the distribution signals. The individual signals for transmission from a subscriber to the central control are converted by frequency modulation into a further frequency band (FB3), and transmitted optically at a second wavelength (lambda2) to the control. This optical signal is amplified at suitable points (A). ADVANTAGE - For light wave transmission of cable television programmes and for the handling of individual communication from subscribers to a central control.
Patent DE-4104386-A1 (DE)
Title: Electronic pulse generator esp. for electric fence - uses pulse transformer made from high permeable material to increase efficiency
Inventor: GASSMANN EDUARD
IPC: H03K3/57
Filed: 1991-02-09
Abstract: The pulse generator comprises a charging circuit (6), a pulse transformer (1), an electronic switch (5), a charging capacitor (4), and a capacitive load (7) to form a series resonant circuit. The pulse transformer (1) has an air gap-free magnetic circuit of material with coercivity below 0.8 A per cm. saturation above  1.2 T and remanence above 0.6 T. The charging capacitor (4), primary winding (2) of the trnasformer (1), the electronic switching element (1) and the charging circuit (6) are arranged, so that the recharge current (ii) in the primary binding opposes the discharge current (ie) and reverse magnetises the magnetic material. ADVANTAGE - Saves energy while delivering sufficient shock.
Patent DE-4104668-A1 (DE)
Title: Folding appts. using fold funnel - has material passing through cross-cut device and cross-fold unit
Inventor: FRISCH FRITZ DIPL ING
IPC: B41F13/56
Filed: 1991-02-15
Abstract: The folding appts. has a fold funnel as first longitudinal fold device, a fold cylinder as cross fold device, and a second longitudinal fold unit. A transport device (6) is arranged in relation to the second longitudinal fold unit (7) in such a way that a product flow coming from the cross fold device (5) is firstly passed by the second longitudinal fold unit (7), and then in a direction counter to the first transport direction feeds it to the second longitudinal fold unit. A third longitudinal fold unit is incorporated which is arranged parallel to the second such unit. Two transport devices (6, 8) are provided, so arranged that a product flow coming from the cross fold device is either fed past the third fold unit and then fed back to it in the opposite direction, or is fed directly to the second unit. USE/ADVANTAGE - A folding appts. is for a roller rotation printing machine, in which the second longitudinal fold is produced selectively with or counter to the first such fold.
Patent DE-4106620-A1 (DE)
Title: Support section for movable side carriage - has extruded profiled section with hard profiled rod engaging in groove
Inventor: SUHLING PETER
IPC: F16C33/61
Filed: 1991-02-27
Abstract: The support section for a movable slide carriage has an aluminium alloy extruded section (1) and at least one guide rail connected to same and provided with a wear-resistant profiled rod (4a,4b) which fits directly into a groove (2) which has been cleared in the extruded section. The profiled rod is held in place by a resilient profiled element (6). The guide rail pref. has two profiled rods which are housed in opposite groove parts (8a,8b) set in the walls of a larger groove (2) whereby a resilient profiled element (6) is set on the base (5) of the larger groove. ADVANTAGE - Simple lightweight construction.
Patent DE-4107720-A1 (DE)
Title: Single rotary vane pump - has valve connected to shaft via sliding bar linkage
Inventor: HERTELL SIEGFRIED DIPL ING
IPC: F04C2/10
Filed: 1991-03-11
Abstract: The end of the shaft (2) projecting into the housing (1) acts as a connecting link guide, the single vane (4) being mounted on the shaft by way of a sprung sliding bar slot (5).  The vane is made in a single piece, and the housing forms an enclosed arc such that all secants passing through the shaft axis (19) are essentially the same length. The inlet (7) and exhaust (9) lie on the axial plane of the shaft symmetrical to the lower neutral point, and preferably on the side of the lower neutral point.  In cross section the vane comprises two cylinder sections closely matched to the inside of the housing on both sides.  A pressure relief valve (12) and additional exhaust port (11) is located near the lower neutral point. USE/ADVANTAGE - Greater pump capacity, reduced complexity and number of components.
Patent DE-4112205-A1 (DE)
Title: Method of transplanting crucial ligaments of knee joint - involves first stretching ligaments to prevent subsequent relaxation
Inventor: ALTRICHTER ANDREAS
IPC: A61B90/00
Filed: 1991-04-13
Abstract: When the crucial ligaments of a knee joint are transplanted, each ligament is subject to a force which stretches it beyond its elastic limit in order to ensure that the ligament does not relax after being transplanted. The ligaments are stretched by means of a device with a spring-loaded slider which is adjusted before use by rotating the knurled knob (2) so that the scale (4) reads zero. One end of the ligament is attached to the hook (1) and the other end attached to the bone of the knee joint. The knee joint is actuated and the load imposed on the ligament is indicated on the scale (4) and the change in length on the scale (3). USE/ADVANTAGE - Transplant of the crucial ligaments of a knee joint. The method prevents relaxation of the ligaments after transplantation.
Patent DE-4116176-A1 (DE)
Title: Immersion unit for measuring density, temp. and pressure - is cylindrical body working on Archimedean principle when immersed in liq. or gas
Inventor: SARZAEIM ABDOLREZA
IPC: G01K11/28
Filed: 1991-05-17
Abstract: The tubular body (1) is closed vacuum-tight and is pivotable at lowest possible friction about the axis (2) at right angles to the image or projection plane. For measuring the density of a liq. or gas, a balancing wt. (6) is slid along a threaded rod (5) until the length axis of the body (1) lies horizontally. The density value is calculated by measuring the distance between the counterweight (6) and the pivot axis (2). The counterweight can be rotated by a magnetic field if it contains a magnet or is of magnetisable material. The threaded rod can be rotated by an electromotor. The charge in electrical current, voltage or charge can be used to ascertain the density when the temp. and pressure are known. The positions of the counterweight and length axis can be determined electronically or opto-electronically. ADVANTAGE - Large measurement range at accuracy better than 2 x 10 to the power of minus 4 gram per cubic cm.
Patent DE-4118499-A1 (DE)
Title: Glass seed germination bowls - can be of various sizes and shapes on plan in plain, smoked or coloured glass and having correspondingly shaped saucers
Inventor: GESSLER THOMAS A
IPC: A01C1/02
Filed: 1991-06-03
Abstract: The bowls are made of fired clay or plastics which can be stacked and are sold in sets of three. They have perforations in the base and a saucer and cover. The bowls are made of glass which can be plain, smoked or coloured. They have a flat base 0.8 to 30.0 millimetres thick and perforations 0.5 to 3.0 millimetres in diameter and from 1.0 to 100.0 millimetres apart. It can be rectangular from 10 x 5 up to 150 x 80 centimetres, or square, with sides from 5.0 to 120.0 centimetres, hexagonal, octagonal or circular. Each shape bowl has a correspondingly shaped saucer. ADVANTAGE - The glass bowls speed up germination and in sunlight photosynthesis can occur.
Patent DE-4121354-A1 (DE)
Title: Mortar mix for cladding pipes - comprises alumina cement, quartz sand, and blast furnace slag
Inventor: NOEH HORST
IPC: C04B28/06
Filed: 1991-06-28
Abstract: Mortar cladding for pipes and fittings consists of a mixt. of 1 pt. alumina cement and 2 pts. quartz sand, in which up to 50% of the cement is replaced by a piezzolanic material. Pref. the piezzolanic material is blast furnace slag. The pref. proportion, depending on the application, is 25-40%. ADVANTAGE - Reduced reaction time, less shrinkage.
Patent DE-4122434-A1 (DE)
Title: Circuit for protecting pressure sensor against excess voltage - has bridge circuit with four resistors, located via temp.-dependent resistor between supply voltage and earth
Inventor: PETER CORNELIUS DIPL ING
IPC: G01R17/10
Filed: 1991-07-06
Abstract: The one diagonal of the bridge circuit is connected to the supply voltage and the other diagonal with the two inputs of an operational amplifier. The output of the operational amplifier and the output at which the measurement signal is measurable are decoupled from one another by a current level circuit. The current level circuit comprises two transistors (T1, T2), the bases of which are joined to one another and to the first transistor collector (T1). Their emitter is connected to earth via resistors (R23, R24) and the collector of the second transistor (T2) is connected to the output terminal. A temp.-dependent resistor (R14) is connected between the supply voltage terminal and the sensor (S). ADVANTAGE - Voltage spikes, reverse connection of supply voltage, or short circuit of output to supply voltage do not damage sensor.
Patent DE-4122672-A1 (DE)
Title: Duo servo drum brake with high braking moment - has pretensioned spring connecting brake shoe to support bearing
Inventor: WEILER ROLF
IPC: F16D51/22
Filed: 1991-07-09
Abstract: The spring force of the pretensioned spring (12) counteracts the expanding force of the expanding device and is greater than the operating force required to place the  brake shoes (2, 3) against the brake drum by the operating lever (11). The spring (12) is pref. mounted  parallel to a retraction spring (8) connecting the brake shoes and is suspended in the brake plate connected to the support bearing (7). <USE/ADVANTAGE> - for duo servo drum brakes,without impairing the brake shoe movement.
Patent DE-4126117-A1 (DE)
Inventor: FOEHST MANFRED
IPC: D04H13/00
Filed: 1991-08-07
Abstract: A web material for transport and conveyor belts is essentially composed of a nonwoven, a binder and a spunbonded web that serves as a reinforcement.
Patent DE-4128185-A1 (DE)
Title: Video camera with shutter and photographic film cassette - incorporates bistable mirror controlled by microprocessor for selective illumination of image processor or optical photographic appts.
Inventor: SEEGERT BERNHARD DIPL ING
IPC: H04N5/225
Filed: 1991-08-24
Abstract: Light (5) passes through a lens assembly (1) with zoom (2), focus (3) and iris (4) to a pivotable mirror (6) for reflection to an optoelectronic converter (7), processor (8) and video cassette (10). For viewfinding purposes a processing circuit (11) drives a picture tube (12). Operation of a special key (15) causes the microprocessor (13) in command of the lens assembly (1) to tip the mirror (6) into position (6') for redirecting the light (5) through a shutter (16) to the film (17). USE/ADVANTAGE - Esp. for camcorder, usefulness and range of applications of camera are extended with selective use of lens, zoom, focus, iris and viewfinder.
Patent DE-4134378-A1 (DE)
Inventor: RIEDE URS N PROF DR
IPC: A61K35/10
Filed: 1991-10-17
Abstract: Natural or synthetic, modified or unmodified ammonium or alkali metal humates with a molecular weight of up to 50,000 D, whose aqueous solutions show no Tyndall effect and do not fluoresce, are used for preparing an antiviral agent, in particular an agent against retroviruses.
Patent DE-4139630-A1 (DE)
Inventor: WETTENGEL HEINZ DIPL ING
IPC: H04L25/49
Filed: 1991-11-30
Abstract: The transmission of data in SDH systems requires fast additive scramblers operating in parallel. For this purpose, a circuit arrangement exhibits a parallel pseudo noise generator (PNG) which, using a network (NE) for regeneration, generates further similar pseudo random sequences with other phase relation by modulo-2 addition. To obtain a minimum number of similar pseudo random sequences, it is necessary to carry out serially a number of modulo-2 additions. The results of the modulo-2 additions are in each case temporarily stored in a buffer memory (FF8, ..., FF38) and are available to the network (NE) for further modulo-2 additions during the next clock period. Due to the temporary storage of the new pseudo random sequences generated by modulo-2 additions, pseudo random sequences of a higher generation can also be generated in series during one clock period by in each case only one modulo-2 addition. The minimum clock period of the circuit arrangement, which is mainly determined by the modulo-2 addition, becomes independent of the number of modulo-2 additions to be carried out in series due to the temporary storage of the results. <IMAGE>
Patent DE-4201268-A1 (DE)
Title: Technical drawing writing implement - has writing point at front end connected to ink storage chamber and with axially extending pressure compensation chamber
Inventor: BASTIANSEN BERND
IPC: B43K8/18
Filed: 1992-01-18
Abstract: One end of an axially extending pressure compensation chamber (12) is connected to the writing fluid storage chamber (4) and its other end is in connection with the ambient air. This other end issues into a capillary chamber (16,18) in a ring-shaped area (14). At least a part of the pressure compensation chamber from the end in connection with ambient air extends axially backwards and the area with the capillary chamber comprises a disc element extending crosswise to the longitudinal axis in which the capillary channels are formed. USE/ADVANTAGE - A small tube writing instrument with at least one part of the pressure compensation chamber extending to come into contact with ambient air.
Patent DE-4202447-A1 (DE)
Title: Trench profile with vertical walls - formed by dry etching using ambient contg. ammonia to produce passivation layer on trench walls
Inventor: CATHEY DAVID A
IPC: H01L21/76
Filed: 1992-01-29
Abstract: To etch trenches in Si substrate material, a chemical etch masking layer (15) is formed on the substrate and a pattern defined. Exposed regions are vertically etched while the etchant produces a N-rich deposited passivating the walls of the trench. Etchant used in the plasma-etching step pref. contains a halogen based material, pref. HCl or Cl2, HBr or Br2, HF, F2, SF6 or NF3. Si contg. cpd. deposited on the trench walls pref. contains SiCl4, SiBr4, SiF4 respectively. Etching step is effected at 250 mTorr, pref. 100 mTorr. Passivation layer is deposited on the trench walls which contains NH3 and a Si-cpd., pref. a tetra-halide. USE/ADVANTAGE - Trenches with vertical walls and a rounded botton are obtd. which significantly reduces the breakdown of the dielectric layer formed inside the trench during further processing. Presence of the passivation layer gives good control of the etching process. Pref. etchant compsns. are SF6, NH3 and Cl2 or NF3, NH3 and Cl2. Used in the mfr. of DRAMS or DRAMS.
Patent DE-4205257-A1 (DE)
Title: Rotary microtome for cutting thin sample - has U-shaped tank enclosing blade holder on three sides, with sides and microtome housing being connected in externally flush manner
IPC: G01N1/06
Filed: 1992-02-21
Abstract: The rotary microtome has a base part (12) on which a microtome housing (14) and a blade holder (16) are arranged, and a tank (31) for receiving thing slices cut from a sample (26). The tank has two spaced-apart side portions (36) and a connecting front portion (38) forming a U-shaped plan section, the U-shaped tank (31) enclosing the blade holder (16) on three sides and the side portions (36) and the microtome housing being connected in an externally flush manner. The blade holder (16) pref. has a smaller cross-section than does the microtome housing to allow flush fitting of the U-shaped tank (31). ADVANTAGE - Almost no additional space is required specially for tank.
Patent DE-4205980-A1 (DE)
Title: Processing of chloro-silane synthesis residues - by non-oxidative treatment with sulphuric acid
Inventor: BRUMME JOHANNES DR RER NAT
IPC: C01B33/107
Filed: 1992-02-27
Abstract: Processing of solid metal-contg. residues from the direct synthesis of organochlorosilanes and/or chlorosilanes, comprising primarily reactor residues, filter dusts or hydrolysis sludges, is effected by treatment with dil. H2SO4 at elevated temp. without use of oxidising agents. Pref. the H2SO4 has a concn. of 20-70 (esp. 40-60) wt.%. The temp. is 20-150 (esp. 60-100) deg.C. USE/ADVANTAGE - Residues from direct synthesis processes using Cu/Si contact masses may be treated to remove Cu and impurities (e.g. Fe and Al), giving Si suitable for recycle, disposal or metallurgical use. In contrast to oxidative processes, all the Cu is removed in soluble form and may be recycled or used, e.g., as a wood preservative, fertiliser, feed additive, flotation activator, algicide or fungicide. In an example, spent contact mass contg. 5.5% Cu (300 g) was stirred with 300 g of 20% H2SO4 at 100-110 deg.C for 1 hr, and then filtered. The filter cake contained 1.7 g Cu, of which 100% was soluble
Patent DE-4207504-A1 (DE)
Title: Drum winch for movement of loads and mountable on transport vehicle - has pivotably movable guide incorporated on its axis for alignment of draw strap.
IPC: B60P7/08
Filed: 1992-03-10
Abstract: The drum (1) is motor-driven around a rotary axis and to it is attached a draw strap (4) for attachment to the load. The draw strap has a guide (2,3), which for alignment of the belt on the rotary axis of the drum under load is pivotably movable. The width of the strap (4) corresponds to the distance between two flanges (2,3) on the drum which limit the winding space for the strap (4). The drum is rotatably located on a jib (8), which is freely pivotable around at least one pivot axis which is directed vertically to the rotary axis of the drum. The pivot axis of the jib lies in the middle plane between the two flanges (2,3) of the drum (1). On the jib is fixed a drive unit comprises a motor (5) and gear (6). USE/ADVANTAGE - For correct winding of draw strap on drum of vehicle-mounted winch, even under difficult loading conditions.
Patent DE-4207937-A1 (DE)
Title: Memory cell for first-in first-out semiconductor memory - has latch circuit with access gates provided by MOSFETs
Inventor: OKITAKA TAKENORI
IPC: G11C11/41
Filed: 1992-03-12
Abstract: The memory cell uses a latch circuit with a pair of cross-coupled complementary MOSFET inverters (5a,24a;5b,24b) and MOSFETs (3,4). These are coupled between the input (N10) of the latch circuit and a write bit line (WBL) and between the output (N20) of the latch circuit and a read bit line (RBL). The transistors (3,4) respond to signals along a write word line (WWL) and a read word line (RWL). Preferably, a write address decoder , receiving externally supplied write addresses, is used to select the write word line (WWL). A read address decoder similarly selects the read word line (RWL). ADVANTAGE - Allows high integration density by reducing number of required transistors.