baber/WOPTO huggingface dataset:
Patent DE-3913713-A1 (DE)
Title: Finishing, milling and levelling unit for metal sheet and strip - has milling and levelling accomplished without slippage between material and levelling rollers
Inventor: RODACH ALEXANDER
IPC: B21B13/14
Filed: 1989-04-26
Abstract: Finishing, milling and levelling unit for sheets and metal strip (51) has a finishing and milling stage (20) whereby the milling and levelling are accomplished without positive or negative slippage between the material (51) and the levelling rollers (1 to 19).  The roller stand has a pair of working rollers (40) and two intermediary rollers (39) mounted via support roller carriers (38) in a built-in frame (35).  Between these carriers (38) and frame (35) a flexible, deformable base plate (36) is positioned.  This plate facilitates coupling between the material (51) and frame (35) via the working rollers (40), intermediary rollers (39) and the support roller carriers. ADVANTAGE - The unit is of simple construction and its finishing operation is not adversely affected by variations in sheet or strip dimensions
Patent DE-3916224-A1 (DE)
Title: Compsns. for protecting retina in cataract operations - comprising UV absorber soln. applied to cornea
Inventor: JANERT HEINER DR MED
IPC: G02B5/24
Filed: 1989-05-18
Abstract: Compsns. for application to the inside of the cornea to protect the retina from UV radiation during a cataract operation are solns. contg. a UV absorber (I). USE/ADVANTAGE - The compsns. protect the retina from damage by UV radiation emitted by the microscope light source after the lens has been removed. Risk of damage is stated to be less than when a UV filter is incorporated in the microscope filter attachment.
Patent DE-3916788-A1 (DE)
Title: Radiator with flat tubes - has frame rails engaging at ends with holders on dish-shaped bodies
Inventor: BINELLO DOMENICO
IPC: F28D1/053
Filed: 1989-05-23
Abstract: The radiator is esp. for automotive use. It has flat tubes one above the other and with corrugated cooling fins between them so as to form a heat-dissipating block. Two tube walls are mounted at the block ends, and there are two frame rails on the narrow sides of the block, together with two dish-shaped bodies on the sides of the walls  furthest from the tubes. The tails (5) engage at their ends (11) with holding devices (8) on the bodies. USE/ADVANTAGE - No vibration of rails when radiator is installed in vehicle.
Patent DE-3919801-A1 (DE)
Title: Cupboard with folding door - has open area covered by door when folded alongside one covered when extended
Inventor: MUNZ JOHANN
IPC: E06B3/48
Filed: 1989-06-16
Abstract: The cupboard has a two-leaf folding door shutting off an area in the extended position.  Alongside this first area (1) shut by the door (3,4) when extended is a second open one (2) at least partly covered by the door when folded and swung open. The first area has a first front portion (5) parallel to the rear wall (8), and a second one (6) including an obtuse angle (a) with the first.  Onto this the front portion (7) of the second area (2), also parallel to the rear wall, joins. The door leaf (3) covering the first area (5) is guided parallel to the rear wall in all positions of the door. ADVANTAGE - Needs relatively small space in front  for opening and shutting door.
Patent DE-3921747-A1 (DE)
Title: Opening device for container with airtight lid, esp. in spacecraft - has heating coil and spring arrangement for melting solder or adhesive to eject lid
Inventor: NIELSEN GEORGE DIPL ING
IPC: B67B7/00
Filed: 1989-07-01
Abstract: A device for opening a container (1) sealed by a lid (3) contains a heat source which heats the container in the region of the lid and removes the lid by the force of a spring (4). The heat source is an electrically operated heating coil (2).  The container wall has a weakened region near the lid. ADVANTAGE - Lightweight device has no unreliable, costly mechanism.
Patent DE-3930449-A1 (DE)
Title: Two-fold yarn prodn. - uses intermediate device on ring spinning frame
Inventor: IGEL WOLFGANG DIPL ING
IPC: D01H1/00
Filed: 1989-09-12
Abstract: Process of yarn prodn in which a sliver is drawn into two strands, reunited at a certain pt and twisted together. The appts is also claimed. Pref the sliver is drawn through stages of a drafting zone and produced as two separate strands of fibre.  These lie in a smooth centre section of a perforated drum with interior suction evacuation. A nozzle jet forces the two strands of fibre apart by an upward air stream along the smooth section which causes the two strands to separate onto the perforations and held by vacuum as the drum revolves. ADVANTAGE: Appts is economical to install, is novel, and produces a twofold yearn in a single stage. The two yarns have identical cross section.
Patent DE-3930599-A1 (DE)
Title: Cast asphalt for heavy duty traffic surfaces - contains reinforcing fibres esp. of polyacrylonitrile
IPC: C08L95/00
Filed: 1989-09-13
Abstract: Cast asphalt, used as the top layer for traffic surfaces, contains high strength, temp. resistant plastics fibres (usually of polyacrylonitrile) as reinforcement. Prodn. of the cast asphalt, involves mixing the plastics reinforcing fibres with heated mineral aggregate before mixing with the hot binder. USE/ADVANTAGE - The cast asphalt is esp. used as the top layer of airport surfaces, motorways and other main roads. The reinforcing fibres spread loads so that the asphalt can withstand heavy point loads without deformation, while not affecting the working properties of the asphalt.
Patent DE-3931997-A1 (DE)
Title: Yarn feed roller - has automatic adjustment to discs and coupling in mechanical action as dia changes
Inventor: SCHERZINGER WERNER DIPL ING
IPC: D04B15/48
Filed: 1989-09-26
Abstract: The drive roller assembly, for the yarn feed particularly to a circular knitter, has an adjustment mechanism with a coupling (32) fixed to the second disc (23), an axially sliding transmission (33) with the first disc (21) rotating round the axis (36), and an adjustment unit (34) which gives the axial sliding movement to the transmission (33). The coupling (32) and the transmission (33) are connected by at least one guide groove (47) at an angle to the axis (36), and at least one guide pin (46) in the other component which rides in the groove. The adjustment unit (34) is held at the axis (36) to give an axial sliding action without rotation. The transmission (33) and adjustment (34) units can rotate in relation to each other, but are coupled together without axial movement so that they can slide together parallel to the axis (36). The coupling (32) can rotate on the second disc (23), and be locked in place through a mounting flange (37) and clamping ring (39). The first disc (21) rotates on a shaft (10) coaxial to the axis (36), in a bearing housing (7), and the shaft (10) extends through the coupling (32) and adjustment unit (34) to rotate within them. The outer mantle of the adjustment unit (34) is toothed (58) to be engaged by a cogwheel (59) with a position fixing screw. ADVANTAGE - The assembly gives an automatic and mechanical adjustment according to changes in dia., without affecting the rotating motor.
Patent DE-3941016-A1 (DE)
Title: Cyclone filter - having housing, deflection plates, screw conduit, partition wall, central opening, slots, screw-insert, pptn. chamber etc.
Inventor: CERNYS NIKOLAJ KONSTANTINOVIC
IPC: B01D29/15
Filed: 1989-12-12
Abstract: A cyclone filter comprising a housing with slots and deflection plates arranged underneath the slots in the direction of flow of the liquid, a screw conduit with central channel, a precipitation chamber and filter element, further provided with partition wall with central opening, a perforated tube and a screw-insert fitted in the central opening of the partition wall from the direction of the precipitation chamber (8), whilst the perforated tube (14) is coaxially mounted inside the central channel (6) of the screw-conduit (5).   Slots (7) are arranged in the wall of central channel (6) and located below deflection plates (3) and whereby the direction of the windings of screw-insert (11) corresponds to the direction of the windings of screw-conduit (5) of housing (1). USE/ADVANTAGE - The cyclone filter can be used for hydraulic equipment of stationary plant and in vehicle- and tractor hydraulic systems to clean pressure-, oil- and cooling fluids.  The cleansing efficiency has been increased, whilst the life-time of the filter element has been extended.
Patent DE-3941871-A1 (DE)
Inventor: VOLKERT OTTO DR
IPC: C09K23/42
Filed: 1989-12-19
Abstract: The invention relates to novel esters which contain fluorocarbon and oxypropylenealkyl ether groups in bonded form, of the formulae 
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 in which: 
 
  Rf is 
 
  a linear or branched, partially fluorinated or perfluorinated alkyl group having 2 to 10 carbon atoms, 
  a partially fluorinated or perfluorinated cycloalkyl group having 4 to 8 carbon atoms, 
  a perfluorophenyl group or 
  a perfluoroalkylphenyl group having 1 to 6 carbon atoms in the perfluoroalkyl radical, 
 
  R is a linear or branched alkyl group having 1 to 4 carbon atoms and 
  n is an integer from 2 to 70, 
 to storage-stable, blowing agent-containing emulsions which contain 
 
  at least one partially fluorinated or perfluorinated (cyclo)aliphatic hydrocarbon having 3 to 8 C atoms and/or sulphur hexafluoride, 
  at least one optionally modified organic polyisocyanate or a higher-molecular-weight reactive hydrogen compound and 
  at least one of the abovementioned carboxylates or carbamidates, 
 and to the use of these emulsions for the preparation of cellular plastics by the polyisocyanate polyaddition process.
Patent DE-4006050-A1 (DE)
Title: Insole for correcting foot defects - has uniform thickness with area of greater stiffness than remainder of insole
Inventor: OOMENS PETER WILLEM BERNHARD
IPC: A43B7/22
Filed: 1990-02-26
Abstract: The insole for correcting defects of the foot extends from the heel (11) to a line (15) at a distance from the toes so that the whole of the underside of  the foot is not covered by the insole. The insole has a  uniform thickness over the whole of its area. At least a part (1) of the area of the insole has a stiffness which is greater than the stiffness of the remainder of the area. The area (1) of greater stiffness is limited to one side of the insole extending forwards from the inner part of the heel. USE - Correction of foot defects.
Patent DE-4006200-A1 (DE)
Title: Plug coupling for vehicle hose pipes - consists of hose nipple with free end, sealing ring, bolt and radial flank
Inventor: BRETTSCHNEIDER ULRICH DIPL CHE
IPC: F16L33/20
Filed: 1990-02-28
Abstract: The plug-coupling for vehicle hose-pipes for detachably attaching a hose (1) to a pipe-socket (2), consists of a hose nipple (3) with free end (3.1). The outer surface (3.2) of the free end (3.1) has a sealing ring (4) which, under radial compression, fills out and seals the annular space between the hose-nipple (3) inner (2.2) and outer (3.2) wall. The inserted nipple (3) into the pipe-socket (2) free end (2.1) is fixed axially by means of a bolt (5) inserted into a least one hole (2.3) going through its wall crosswise to the lengthwise axis (A) and at a tangent to the wall outer surface (3.2) of the hose-nipple (3). The bolt (5) rests axially against a radial flank (3.3) facing away from the hose-nipple (3) free end (3.1).
Patent DE-4010483-A1 (DE)
Title: Liquid level-density measurement arrangement - has orifice plate between liquid surface and force transmission unit with hole for rod covered by movable seal
Inventor: ZEH BRUNO ING GRAD
IPC: G01F23/00
Filed: 1990-03-31
Abstract: A displacement body (14) dips into the liquid. Force exerted on the body is transmitted by a rod (5) and a torsion tube (6). The body is suspended on the free end of the rod. An orifice plate (2) between the liquid surface and the force transmission unit has an orifice large enough for the rod to pass through while being covered by a radially movable seal (4) with a small hole (20) for the rod. ADVANTAGE - Reliable operation when vapour can crystallise directly.
Patent DE-4010682-A1 (DE)
Title: Azeotrope of di:chloro-penta:fluoro-propane (mixt.) and acetone
Inventor: BUCHWALD HANS DIPL CHEM DR RER
IPC: G03G5/00
Filed: 1990-04-03
Abstract: Compsn. (I) consists of 90.0-80.0 (wt.)% dichloropenta fluoropropane(s) (II) and 10.0-20.0% acetone.  (II) is pref. 1,1-dichloro-2,2,3,3,3-penta fluoropropane (IIA; R225ca) and/or 1,3-dichloro-1,1,2,2,3-penta fluoropropane (IIB; R225cb). (I) is pref. an azeotrope of 85.2% (IIA) and 14.8% acetone with a b.pt. of ca. 55.5 deg.C at atmos. pressure; a ternary azeotrope of 85.2% (IIA):(IIB), pref. in 1:3-5.5, esp. ca. 1:4 ratio, and 14.2% acetone with a b.pt. of ca. 55.7 deg.C. Compsn. may also contain 0.01-5, pref. 0.05-1% stabiliser, pref. of the nitroalkane, alkylene oxide and/or alkynol type.
Patent DE-4012016-A1 (DE)
Title: Cap spinning and twisting spindle - has cap body of fibre reinforced plastics
Inventor: WEIMAR MICHAEL DIPL ING
IPC: D01H7/68
Filed: 1990-04-13
Abstract: The cap spinning or twisting spindle has a thin-walled cap body, as the cap, made of a fibre reinforced plastics. Pref. the bearing unit is integrated into the cap body as a one-piece unit. The plastics material for the cap body is reinforced by C fibres. The outer mantle surface of the cap body is coated to prevent wear, and the lower edge is fitted with a wear protection ring flush with the outer mantle surface of the cap body. The connection opening has an insert. ADVANTAGE - The appts. improves the running qualities of the yarn, and reduces the development of different yarn tensions.
Patent DE-4018046-A1 (DE)
IPC: F24F13/28
Filed: 1990-06-06
Abstract: A variable air filter system is described for convection and ventilation air flows, filter elements being introduced into the air flow in order to clean or purify the room air. To obtain an improved filtering effect, provision is made for filter elements to be disposed at a distance in front of or above the air-generating surface or the air-generating cross-section, the area of such filter elements being as large as or, if required, larger than the air-generating cross-section of the air-emitting surface. It is possible to provide the filter elements with the facility of enabling different inclination, form, overall depth, and length and height arrangement to be adjusted to the optimum value for filter efficiency in the air flow for cleaning.
Patent DE-4019415-A1 (DE)
Title: Stringed-instrument equipment - automatically counteracts alterations due to temp. variation
IPC: G10D3/14
Filed: 1990-06-18
Abstract: The equipment automatically counteracts variations in tuning of a stringed instrument caused by temp. fluctuations in the environment. Separate equipment can be provided for each string, while all springs and mechanisms generating extension pressure can be fixed to a common mounting plate for rapid installation. It can be divided into main sections turning levers with rollers, string guides, extension pressure generator, and adjustable springs. USE/ADVANTAGE - Equipment avoids constant re-turning of stringed instrument.
Patent DE-4023122-A1 (DE)
Title: Friction damper for two relatively moving sections - consists of loop spring, and deformable expander ring with slit
Inventor: BRANDENSTEIN MANFRED
IPC: F16F7/04
Filed: 1990-07-20
Abstract: The friction damper between two relatively moving sections of a tension-piece, consists of a looped spring (119, and friction surfaces acting against the other section at a pressure depending on the direction of movement.  The looped spring (11) is enclosed by a deformable expander ring (8) for diverting the radial looping force emanating from the loop-spring (11) into axial expanding forces acting evenly over the periphery towards radial friction surfaces (17). One end (12) of the looping spring (11) is joined to the expander ring (8) so that it cannot twist.  The expander ring (8) has a slit (13) in at least the bigger part of the  radial extension, in which fits a radially long, bent end (12) of the looping spring (11). USE/ADVANTAGE - The friction damper is easily mass-produced.
Patent DE-4023375-A1 (DE)
Title: Vehicular external rear-view mirror - has stops on underpart of transmission housing for definition of positions to which mirror is rotated by motor
Inventor: HELFERICH BERND DIPL ING
IPC: B60R1/074
Filed: 1990-07-23
Abstract: The casing of the mirror is tilted and rotated about the vertical axis of a hollow bolt (32) whose threaded section (38) enters a nut (40) at the end of a shaft (41). The bolt passes through a transmission housing (50) whose underpart (54) has three stops for abutment of ridges (66-68) on a cam disc (62) and intermediate disc (60). The motor (25) is a 12V DC machine with high idling speed, driving two worm gears (72,74; 76,78) to rotate the mirror casing. ADVANTAGE - The precision positioning of mirror casing after each operation of electric motor is reliably reproducible.
Patent DE-4028051-A1 (DE)
Title: Grating interferometer with diffraction screens in series -  makes multiple use of resulting diffraction orders as multiple or non-polarised heterodyne interferometer or interference spectrometer
IPC: G01B9/02
Filed: 1990-09-05
Abstract: The incident radiation in-front of the partially reflective grid (1b) is not diffracted for use as a reference wave. The diffracted component is used as a measuring wave and re-refected in a measuring prism(4), modulated by the reference wave and interfered. Alternatively or additionally, the measuring wave is reflected and offset in parallel by a measuring reflector, diffracted again by the second grid and modulated and interfered by the reference wave of the same or other order of the same or different sign. Alternatively, the beams from at least two separated light sources (3a, 3b, 2) serving as reference-reference and reference-measuring waves modulate each other and interfere to produce beat waves. ADVANTAGE - Compact construction.
Patent DE-4034395-A1 (DE)
Title: Grip for wrapping material - has air-jet grip to align wrapping and suction hold
Inventor: OHTONEN AIMO
IPC: B65B25/14
Filed: 1990-10-29
Abstract: The wrapping material (4) is pushed onto the alignment plate (1) by servo grips (2).  The plate has an integral airduct (5a) to generate an airjet between the plate and the wrap.  This causes a low pressure grip between the wrap and the plate.  The wrap is then aligned for pressing onto the item to be wrapped. The alignment by the air-jet is followed by a suction grip through an array of suction holes.  No mechanical flattening of the wrap is required. ADVANTAGE - Fast throughput rate, without misalignment.
Patent DE-4041461-A1 (DE)
Title: Recyclable single-layer packaging container, e.g. for foodstuffs - comprises thickened rim for stability and sodium polyacrylate moisture absorber
Inventor: FRANSEN THEODOR W M
IPC: B65D1/34
Filed: 1990-12-27
Abstract: Single-layer packaging container, esp. for foodstuffs, of foamed plastics, esp. polystyrene, sheet with thickened rim, including manufacture. Fluid absorber system for container with fluid-permeable flexible enclosure, esp. PVAL sheet, for moisture-absorbent polymer, including use for foodstuffs. USE/ADVANTAGE - For packaging foodstuffs, esp. deep-frozen meat. Compared with multi-layer containers, this container is easily recycleable, including the absorber system. Compared with current systems, use of moisture-absorbing polymers gives greatly increased moisture capacity. The thickened edge improves (unfilled) stacking and automated unstacking. The edge also improves mechanical stability against pressure and impact, including crushing during the filling process. The manufacturing process gives improved dimensional accuracy.
Patent DE-4103423-A1 (DE)
Title: PCB mountable contact socket - prevents damage to contact surfaces due to relative movement and heat
IPC: H01R13/04
Filed: 1991-02-05
Abstract: The solder contact is formed from a metal sheet and has spring arm contacts (23, 23a, 23b, 23c, 24, 24a, 24b, 24c) with regions (26) for contacting pins (11) plugged in between the spring arm  contacts. The solder contact has legs (21, 22) which can be pushed through a hole in a conducting board. The contact region (12) of the pins are jammed or friction held in the contact region (26) of the spring arm which is movable in the plugging in direction of the contact pins (11). USE/ADVANTAGE - Reduces relative movement between contacts due to heating which damages contact surfaces.
Patent DE-4109801-A1 (DE)
Title: New deep after-chroming dis:azo dyestuff cpds. for dyeing polyamide - are nitro-phenol-azo di:alkyl-amino-benzene-azo naphthol mono:sulphonic acid cpds.
Inventor: HEPP WULFDIETER DR
IPC: C09B31/047
Filed: 1991-03-26
Abstract: New afterchroming dyestuffs (I) are 2-(4-nitrophenol-2-azo) -6-(4-dialkylaminobenzene-1-azo) -1-naphthol-3-sulphonic acid cpds. of formula (I); the R gps. independently = Me, Et, C2H4OH, C2H4CN or C2H4-OMe. (I) can be prepd. by conventional diazotisation and coupling. USE/ADVANTAGE - (I) are useful for dyeing natural and synthetic polyamides in deep black hues. The solubility, strength and depth of colour and build-up of disazo dyestuffs with these R substits. corresp. with those of the best known afterchroming monoazo dyestuffs and only one SO3H gp. is needed. The light fastness is 6-7 and fastness to water, washing and perspiration 4-5, corresp. to those of the best known black chroming dyestuffs.
Patent DE-4118774-A1 (DE)
Inventor: RABE JUERGEN DIPL ING
IPC: B22C9/28
Filed: 1991-06-07
Abstract: In a form tool (6) for producing impellers or diffusers for radial pumps with two separable tool parts (7, 8) axially to the axis of rotation (R) of the impeller or diffuser (1), the separating surfaces (14) running concentrically with the axis of rotation (R) of which divide the blade forming slots (16 or 18) into an inner section (15) in in one part (8) of the tool with the form slots (16) and an outer section (17) in the other tool part (7) with the form slots (18), there are pointed terminal edges at the separating surface (14) in both tool parts (7, 8). These terminal edges are chamfered. This considerably lengthens the useful life of the form tool (6).
Patent DE-4121007-A1 (DE)
Title: On=line uninterruptable power supply for fire or intruder alarm system - has DC=AC converter coupled via filter to centre tap of output transformer
Inventor: SAUPE JOERG DIPL ING
IPC: H02J9/06
Filed: 1991-06-21
Abstract: The power supply has an input rectifier and a DC/AC converter with an intermediate circuit having a pair of capacitors (C1, C2) associated with the input rectifier diodes (V1, V2). The active elements of the DC/AC converter, e.g. insulated-gate bipolar transistor (V3, V4) with parallel free-running diodes (V5, V6), are coupled via a filter to the centre top of an output transformer (T1). Pref. the filter comprises a choke coil (L1) and a capacitor (C3), or a filter and the stray inductance provided by the core of the output transformer (T1). A battery arrangement is placed in parallel with the two capacitors (C1, C2). ADVANTAGE - Ensures constant output voltage; reduced wt. and size.
Patent DE-4122441-A1 (DE)
Title: Synthetic roof tile with good weather resistance - comprises moulded polyester resin with slate powder filler and embossed surface to give realistic appearance
Inventor: EICHLER KARLHEINZ
IPC: E04D3/32
Filed: 1991-07-06
Abstract: A roofing tile consists of a moulded plastic, pref. polyester resin, filled with slate powder or other similar material. The slates are given a natural appearance by embossing the surfaces. Fracture lines following various patterns are formed on the rear face of the tiles, allowing them to be simply broken off to attain the desired shape. USE/ADVANTAGE - The synthetic tile replaces natural slate tiles, has excellent weather resistance and a natural appearance. (3pp Dwg.No.0/3)