baber/WOPTO huggingface dataset:
Patent DE-4025159-A1 (DE)
Title: Pi-filter for HF interference suppression - has dry capacitors with esp. polyester or polypropylene foil windings of specified resistance
IPC: H03H1/00
Filed: 1990-08-08
Abstract: In a pi-filter in the form of dry capacitors with two concentric foil capacitors arranged successively on an electrical conductor rod and separated by a ferrite ring, the novelty is that a 50ohm resistance wire (3) is wound as an armature on the low permeability ferrite ring (4) and that a segmented low permeability ferrite tubular core (5) extends concentrically on the threaded rod (1) between the rod and the capacitor windings (2a,b) and the ferrite ring (4). Pref. the capacitor windings (2a,b) consist of polyester or polypropylene foil. USE/ADVANTAGE - The filter is useful for h.f. interference suppression. It has electrical properties at least as good as PCB-impregnated filters, produces no resonance esp. in the 150-250 kHz range, has improved h.f. properties and can be mfd.  economically.
Patent DE-4028984-A1 (DE)
Title: Gas washer process and assembly -  used to clean gases with dissolved surfactant
Inventor: LUDORF EDMUND
IPC: B01D53/18
Filed: 1990-09-13
Abstract: The continual removal of unwanted fluids and gaseous materials from gases requires washers or scrubbers which occupy large spaces. Unwanted fluids or gases are released within a tank contg. a soln. of surfactant in water resulting in the formation of foam; that the bubbles formed trap and wash the gases before release of clean gas. USE/ADVANTAGE - The process and assembly facilitates the construction of compact gas washing plant which consumes little energy and may be operated as part of a continuous process requiring minimum maintenance.
Patent DE-4029851-A1 (DE)
Title: Frequency multiplying optical waveguide mfr. -  by selective polarisation, exposure and development of photosensitive layer
Inventor: DESERNO ULRICH DR
IPC: G02F1/355
Filed: 1990-09-20
Abstract: Prodn. of an optical waveguide, with domains (11,12) electrically polarised in various directions for optical frequency multiplication, involves (i) applying a waveguide layer (2) of electrically polarisable, photosensitive material, which cross-links on exposure and subsequent developments, onto a substrate surface; (ii) subjecting the layer (2) to an electric field (E) aligned in one direction (r1 or r2); (iii) selectively exposing and developing the layer using an exposure mask to fix the polarisation direction in the exposed sections while leavingg the unexposed sections unchanged; (iv) subjecting the layer (2) to an electric field (E) aligned in another direction (r2 or r1); and (v) exposing and developing the previously unexposed layer sections to fix a different polarisation direction in these sections. USE/ADVANTAGE - The waveguide is useful for quasi-phase matching second harmonic generation (QPM-SHG) in semiconductor laser applications. It has improved structure quailty.(esp. quality (esp. the requisite mfd. fineness and precision), the structure widths for short wave (blue) light prodn. being maintainable over the entire SHG structure at 1-4 microns with 0.5 micron precision.
Patent DE-4034880-A1 (DE)
Title: End wall of explosive shell - has circular expansion groove to reduce stress in end wall
Inventor: BONGERS HERMANN DIPL ING
IPC: F42B5/26
Filed: 1990-11-02
Abstract: The end wall (1) of the casing of an explosive shell has a narrow circular groove (7) formed on its outer surface. The groove depth (6) extends into a rib (3) projecting from the inner surface of the end wall (1). This groove (7) permits the end wall to expand diametrically and so reduces stresses which would other wise be caused in the end wall when the shell is fired. Several additional circular grooves of smaller diameter may be formed in the end wall. The groove (7) may be interrupted in one or more places by a transverse rib. USE - Explosive shells.
Patent DE-4034903-A1 (DE)
Title: Equipment for on-site line boring of turbine housing - has boring carriage travelling on through arbor supported at each end and by steady rest
Inventor: KALITZKY ARNO
IPC: B23Q9/00
Filed: 1990-10-31
Abstract: To ensure accurate alignment the bores of a turbine housing must be line bored on site after erection using equipment which can be assembled in the housing and correctly aligned with respect to the turbine axis. The equipment consists of a boring arbour (2) carried at each end in adjustable supports (1). On the arbour is a carriage with a main drive unit (8) for a counterbalanced rotating arm (9) and boring tool (10). The arbour is hollow and has connections for a hydraulic power unit supplying the main drive motor and a further motor drive onto a rack for axial feed of the carriage along the arbour. A steady rest (11) is positioned close to the carriage to prevent deflexion of the arbour. USE/ADVANTAGE - Can be used for open or closed housings. Machining can be done in one set up of equipment. Rigid support ensures accurate geometry.
Patent DE-4038713-A1 (DE)
Title: Print and correction ribbon unit for typewriter - has cassette that is displaced to change over between print and correction ribbons
Inventor: KITTEL ARTHUR
IPC: B41J32/00
Filed: 1990-12-05
Abstract: A needle matrix print head (9) is mounted on a carriage and moves along the length of the print feed roller on guides. Cassettes (13, 95) provide print ribbons (14) and correction ribbons (99) that pass between the head and the paper passing around the feed roller. - The print ribbon passes around guides and is supported on spools. The base cassette houses the correction ribbon on spools built into the unit. The drive for the ribbons is provided by a toothed belt (73) with input from a stepping motor (91).
Patent DE-4101486-A1 (DE)
Inventor: HERRMANN ERWIN
IPC: B65D6/24
Filed: 1991-01-19
Abstract: A means for providing a separable connection of elements, preferably flat elements (1), having simple design and simple and easy handling, is designed such that at least one connecting element (3) is assigned to the elements (1) to be connected at their edge region (2) that faces the respective other element (1) and that the connecting elements (3) of the elements (1) to be connected can be engaged in pairs, the connecting elements (3) being in each case integral components of the elements (1) that are to be connected and having an engagement zone (4) for mutual engagement, or the connecting elements (3) having an engagement zone (4) for mutual engagement and a securing zone (5) and the securing zone (5) being used for securing to the elements (1). <IMAGE>
Patent DE-4103608-A1 (DE)
Title: Compressor for removing smell from slurry - introduces pre-compressed air via vertical duct
Inventor: STEINHUBER WALTER
IPC: A01C3/02
Filed: 1991-02-07
Abstract: The feed removes the smell from slurry by introducing air via a vertical duct. The air entry opening (11) of the vertical hollow duct (3) projecting from the slurry has a blower (12) for pre-compressing the air to be introduced into the hollow duct (3). The device can be a paddle wheel. USE/ADVANTAGE - The device effectively fumigates even containers with a great depth of slurry.
Patent DE-4104421-A1 (DE)
Title: Superconducting composite with improved mechanical properties
Inventor: TENBRINK JOHANNES DR
IPC: H01L39/14
Filed: 1991-02-14
Abstract: Superconducting composite (I) consisting of an oxide-ceramic superconducting material (II) and an external cover (III) essentially consisting of silver comprises a covering material of an oxide-dispersed cured or curable silver alloy. Also claimed is the prepn. of (I) by inserting (II) into (III), cross-section-reducing moulding, and heat treating to obtain and adjust oxygen concentration.     The improvement is that before heat-treatment, a further heat-treatment is carried out to cure the silver alloy.
Patent DE-4105263-A1 (DE)
Title: Image processor for characters and symbols - introduces correction to eliminate stepped profile of lines due to aliasing
Inventor: UEDA NAOFUMI
IPC: G09G5/20
Filed: 1991-02-20
Abstract: The boundary of a character or graphical symbol printed by a matrix unit can create a stepped profile due to the 'aliasing effect' and a system is proposed to generate a smooth profile. A memory (1) stores data in x and y coordinate form and these are evaluated by a detector (2) that determines the inclination of boundary lines. A point counting module (3) determines the vertical point count changes for specified horizontal moves. The data are used by the correction module (4) to provide additional points to eliminate the stepped effect in the reproduced boundary line. ADVANTAGE - Relatively simple processing eliminates stepped symbol boundary lines.
Patent DE-4111645-A1 (DE)
Title: Controlling automatic transmission of motor vehicle - correcting gearchange positions when wheel-spin control operates
Inventor: ETZEL MICHAEL
IPC: F16H61/02
Filed: 1991-04-10
Abstract: Automatic transmission is provided with programmed gear-change positions w.r.t. engine speed and torque. During wheel-spin control, the gear-change positions are modulated to take account of the overall reduced throttle settings. The last non-adjusted throttle setting is taken as a reference. The system allows gear-change under programmed conditions, e.g. hill work, during wheel-spin control. The gear-change operations are stabilised to prevent undue switching during wheel-spin control. ADVANTAGE - Improved stability, quiter operation.
Patent DE-4113064-A1 (DE)
Title: Triangular flight and landing plate - is used for guiding bees to hive entrance
Inventor: NOCK FRANZ
IPC: A01K47/06
Filed: 1991-04-22
Abstract: The flight plate (1) is made of plywood or plastics or aluminium. It is of triangular shape with an aluminium strip on the base side. Another side has a recess of 120 x 12 mm cut out and the third side has a recess of 60 x 8 mm cut out. Two metal pins 25 mm long projecting 6-7 mm from the base side serve as spacers between the flight plate and flight board (winter position). The sides of the triangle are 245 mm and the corners are cut off, facilitating turning. USE/ADVANTAGE - A cheap and effective way of guiding bees to the hive and providing a landing and take-off area in front of the entrance to the hive.
Patent DE-4114484-A1 (DE)
Title: Electronic module for circuit boards for rack mounting - has metal front plates fixed to each circuit board and has clearance for ease of handling, taken up by spiral clips
Inventor: HAXEL GERD
IPC: H05K9/00
Filed: 1991-05-03
Abstract: The electronic circuit board carrying module is constructed from side wall panels (2, 3) with profiled rail material to provide support for panels. The top and bottom sections have rails that provide locations for circuit boards (11). Edge connectors at the rear of the boards engage with built in connnectors (13). The front openings of the module are enclosed by metal plates (14) to provide efficient screening. Side sections, both on the plates and the module walls, (29, 39) carry spring contact inserts (31). Similarly the gap between plates is taken up by a sprung, metal element. ADVANTAGE - Facilitates insertion and removal of circuit boards.
Patent DE-4118864-A1 (DE)
Title: Burning gaseous or liquid fuel in blue type burner - operating ignition device whilst airflow delivery fan is operating, then briefly deactivating fan motor
Inventor: RIS WERNER
IPC: F23D11/40
Filed: 1991-06-07
Abstract: The method of burning gaseous or liquid fuel with a blue type burner involves using a fuel line with nozzles axially enclosed by an air line. A stop has through-holes for the fuel and air to be intensively mixed together and ignited in a mixing tube. A motor-driven fan ensures a flow of air. The ignition device is first operated after ignition initiation (t0) when the fan is being operated. After ignition initiation and the subsequent fan operation the fan's drive motor is set at reset again for a short period (theta) without switching off the ignition device. The fan continues to turn. ADVANTAGE - Method of starting ensures optimal operation of burner.
Patent DE-4124648-A1 (DE)
Title: Paper-making drying groups - has web transfer between fourdrinier(s) without change of direction
Inventor: HOLIK HERBERT DIPL ING
IPC: D21G9/00
Filed: 1991-07-25
Abstract: To link two drying groups in a papermaking machine, where at least one continuous fourdrinier carries the paper web through each section (1,2), the web is transferred from the fourdrinier (5) of the first group (1), downstream of the final stage, to the fourdrinier (6) at the next group (2) without any real deflection of the path. The fourdrinier (6) of the second group (2) pref. takes the paper web and carries it on without a change of direction. The path of at least one fourdrinier in the two groups (1,2) can be altered so that, if necessary, the two groups can be separated. An adjustable fourdrinier guide roller (7), for the first (5) or second (6) fourdrinier, brings them in contact with each other in operation, and allows them to be separated, with an adjusted or controlled pressure to press the fourdriniers together for transfer of the paper web. At or before the transfer of the paper web from the firt fourdrinier (5) an upper suction box holds the web against the fourdrinier, and the first roller (8') of the second gp. (2) is a suction roller to hold the web against it, in front of the guide roller (7) for the first fourdrinier (5). ADVANTAGE - The array gives a smooth transfer of the web between the drying groups, without damage or distortion, and the gps. are displaced from each other to avoid contact.
Patent DE-4132397-A1 (DE)
Title: Reset pulse generation circuit for computer system processor - contains charging circuit for capacitor which inhibits reset pulse generator in normal operation, and reset key for manual triggering
Inventor: RIEDEL MANFRED DR ING
IPC: G06F1/24
Filed: 1991-09-26
Abstract: The circuit has an input which receives a periodic signal during normal operation, and a charging circuit contg. a capacitor whose output is connected to the input of a pulse generator stage. The periodic signal maintain the capacitor at a certain charge level to prevent activation of the pulse generator. An additional reset key (T1) for the processor is integrated into the charging circuit (3), controlling the pulse generator. When the key is operated the state of charge of the capacitor (C1) is altered to corresp. to the absence of the monitoring signal. The charging circuit (R1,C1) may comprise a series or parallel RC configuration. USE/ADVANTAGE - Esp. for generating reset pulse on trigger signal failure. Simple design, highly reliable, enables both manual and automatic reset.
Patent DE-4132802-A1 (DE)
Title: Lightweight cast camshaft for engine valves - has integral web with apertures and integral ring forming running face of cam, ring,web and camshaft all being one piece
Inventor: HENKEL HORST
IPC: F16H53/02
Filed: 1991-10-02
Abstract: Each cam (2) is formed by a ring (3) which is connected to the camshaft (1) by the web (4) which is narrower than the width (c) of the cam. The web has apertures (6). The ring, web and camshaft are made in one piece. The web is in the middle of the ring and the average web width (a) equals the thickness (b) of the finished ring on its circumferential face (5). ADVANTAGE - The hollow cavities provided for weight reduction open outwards and are more easily accessible whilst the stability is increased.
Patent DE-4133412-A1 (DE)
Title: Loudspeaker housing with reduced characteristic resonance -  has apertured housing walls with foam layers providing separation from adjacent components
Inventor: ROTHAERMEL DIETER
IPC: H04R1/28
Filed: 1991-10-09
Abstract: The loudspeaker housing has each loudspeaker supported so that the loudspeaker membrane can oscillate without contacting the front sound wall.  A foam material is incorporated between each wall of the loudspeaker housing and the adjacent parts of the loudspeaker housing, each wall having openings at its centre and pref. also at the sides, for reducing the sound reflection characteristic. Pref. the rear wall of the loudspeaker housing has a central circular opening (OF) and a peripheral slot (SP) around all 4 sides. ADVANTAGE - Improved sound reproduction characteristics.
Patent DE-4133582-A1 (DE)
Title: PVC-contg. plastic waste processing - comprises adding alkali(ne earth) metal carbonate(s) to melt to prevent bubble formation due to hydrogen chloride formation
IPC: B29B17/00
Filed: 1991-10-10
Abstract: Prodn. and processing of a plastic melt esp. of plastic waste water under the influence of heat is new. The melt contains a PVC component or similar and contains alkali(ne earth metal carbonate additives. The melt pref. contains 1-20 pref. 5-10 wt. % calcium carbonate. The melt is processed using a plastifying appts. and a mould press. ADVANTAGE - Bubbles due to halogen chloride gas formation are prevented
Patent DE-4139711-A1 (DE)
Title: Damping force adjuster for vehicular hydraulic suspension system - uses data table in adjustment of opening into fluid chamber in accordance with measured vertical velocity
Inventor: YAMADA NAOKI
IPC: F16F9/06
Filed: 1991-12-02
Abstract: Each of four indepenent wheel suspensions (10,20,30,40) incorporates a shock-absorber (e.g. 11) with a stepping motor (17) linked to an electronic contrtol unit (ECU). Signals are provided by sensors of vertical, transverse and longitudinal accelerations (12,14,15), ground clearance, road speed, and steering angle (16). The fluid chamber of each suspension is supplied via a shutter whose aperture is adjusted by the stepping motor (17) on the basis of the vertical velocity which is brought into correspondence by reference to a data table. ADVANTAGE - Transmission of vibrations from road surface to body of vehicle minimised.
Patent DE-4141612-A1 (DE)
Title: Ribbed nail for securing boards onto blocks for pallets - has long ribbed section near nail tip and short ribbed section between smooth shaft sections under head
Inventor: ROCKENFELLER GOTTFRIED ING GRA
IPC: F16B15/04
Filed: 1991-12-17
Abstract: The pallet has two layers of boards nailed onto support blocks (5) using the nail fasteners. The nail tip section has ribbed profiles (7) to hold into the block. A shorter ribbed section (13) grips between the two boards, leaving two smooth sections for rigidity. The ribbed sections prevent nail popping when the pallet flexes under load. The tip section of rib profile extends up to half the length of the nail shaft. The second ribbed section is up to one third the length of the tip ribbed section, with the smooth sections of equal length. ADVANTAGE - Improved grip into boards, less risk of nails bending during fitting, less risk of nail popping.
Patent DE-4201949-A1 (DE)
Title: Method of spraying of varnish with viscosity increased by storage - is eased by shear stress application from pump feeding spray gun with liq. from intermediate reservoir
Inventor: EL-SAYED ISMAIL DIPL ING
IPC: B05D1/02
Filed: 1992-01-24
Abstract: The varnish (18) and a reduced quantity of thinners (19) are pumped (12) into a circuit with forward and return branches (13, 14) serving an intermediate reservoir (20) with a piston or gearwheel pump (21) which feeds the spray gun (16). A pressure-limiting valve diverts some of the liq. via a return pipe (22) back to the intermediate reservoir. The viscosity built up during prolonged shelf-life is at least partially reduced by short-duration application of shear stress through the pumping action. USE/ADVANTAGE - Esp. with organically pigmented varnish, quality is improved by thinning with min. cost and quantity of solvent addition.
Patent DE-4210435-A1 (DE)
Title: Knock down container held together by spring clips over edges - has shaped ends of clips gripping sloping edges of milled grip slots
Inventor: NEIDHART FRITZ DIPL ING
IPC: B65D88/52
Filed: 1992-03-30
Abstract: The adjacent panels (2,3) which form the rectangular container have butting edges and are clipped together by L-shaped clips (4) over the mutual edge, and with the ends of the clips gripping into the slots (5,6) parallel to the edge. One slot is positioned in each plate edge and the sides of the slots are angled to provide an improved grip, without increasing the spring pressure. The ends of the clips are S-shaped with the pressure applied against the slot sides near the bottom of each slot. The clip ends are angled similar to the slot sides. USE/ADVANTAGE - Simple to assemble and knock down. Secure hold for clips. Return packing cases.
Patent DE-4210783-A1 (DE)
Title: Choke spool with two core halves and coil - combines L=shaped cores with coils wound on one leg of each coil
Inventor: RALL BERNHARD DIPL ING
IPC: H01F27/30
Filed: 1992-04-01
Abstract: The spool has two identical core halves (4,5) combined to form a core, and two separate ferrite coils (1,2). The two core halves each have two perpendicularly arranged legs (41,42;51,52) to form an L shape. One of the two coils is wound on one of the two legs (41,51) of each core half. Contact surfaces of the core halves preferably lie in one plane (E). The coil wound legs are preferably circular in cross-section and have thermoplastic bridges in which a wire forming the coil is fixed. ADVANTAGE - Good magnetic properties and simple to mfr.. Esp. for suppressing interference in two wire lines.
Patent DE-4212757-A1 (DE)
Title: Elastic layer based on recycled material and binders - comprises two flat layers and profiled layer forming feet, each layer having different materials and particle sizes
IPC: B32B7/02
Filed: 1992-04-16
Abstract: The invention describes a moulded component forming an elastic layer and comprising a mixt of granulated recycled material and binders. The component (1) has three compressed layers (2, 3, 4) of uniform thickness bonded to gether at their interfaces (5, 6). Upper (2) and middle (3) layers are formed by flat plates and the lower layer (4) has hump-shaped feet (7) sepd by grooves (8). The individual layers (2, 3, 4) are formed in different materials with different particle sizes. USE/ADVANTAGE - The component can be used as a covering e.g. for floors or as an elastic support for appts. uses recycled material and has a compsn. which can be varied to suit the end purpose.
Patent DE-4216412-A1 (DE)
Title: Temp. sensor for potentiometric electrodes esp. for pH measurement - has measurement resistance and temp. sensor connecting wire formed as unit housed in protective tube
Inventor: NIPKOW ANDRE DR SC NAT
IPC: G01N27/28
Filed: 1992-05-18
Abstract: The temperature sensor (2) has an integral signal wire (12) for a pH electrode. A one-part protective tube (4), pref. of glass or plastic, encases the measurement resistance (8) and connecting wire (12), allowing the tip (14) of the resistance to protrude. An encapsulation (16), made from a good electrical insulator, includes a sealed through-hole for the connecting wire (12). The temperature sensor pref. includes an electrically screening tube within the protective tube. The screening tube, the measurement resistance, and the electrode connecting wire form an integral unit. USE/ADVANTAGE - Esp. for laboratory use, also industrial applications. Requires small space; may be installed in long or short electrodes.
Patent DE-4221542-A1 (DE)
Title: Braking assembly for castor - uses rod-actuated lever with profiled engagement section for castor
IPC: B60B33/02
Filed: 1992-07-01
Abstract: The braked castor has a braking lever (7) between the fork shanks (9) capable of swivelling about an axis (6) which extends between the first ends (3) of the shank and parallel to the rolling axis (5). The side of the braking lever directed towards the castor roller (4) has a contoured engagement section (10), with an actuation rod (16, 17) which can be pressed against the lever at a distance from the axis (6). A spring (11) is arranged between the fork (1) and the braking lever. ADVANTAGE - Braked castor of simple construction with an easily accessible brake.