baber/WOPTO huggingface dataset:
Patent DE-4114865-A1 (DE)
Title: Biological treatment reactor - has injector formed at entry to pptn. tube section for removal of suspended matter without blockage
Inventor: SCHWARZ CLEMENS DIPL ING
IPC: B01D21/24
Filed: 1991-05-07
Abstract: Reactor assembly, for the biological treatment of waste water or submersed fermentation with low growth rates, works on the air lift principle with external recirculation and sepn and return of suspended matter into the recirculating flow of the reactor. Lower end of the rising tube (1) is linked to a pptn tube (3) section of a normal cross section at a level of one-half to two-thirds of the level within the rising tube. Upper end of the pptn tube section (3) is connected to a sedimentation unit (4) through a conical joint (5) with its outlet at the height of the level within the rising tube. Upper link between the outflow and return flow columns is a connecting tube (1a) with the same cross section as the pptn tube section (3), to open within the conical joint (5) to give a jet outlet (6). They are assembled together so that the joint (5) and the pptn tube section (3) form an injector. ADVANTAGE - Assembly gives an effective removal of suspended matter, without blockages.
Patent DE-4123554-A1 (DE)
Title: Automatic measurement arrangement for ophthalmic lenses - corrects for measurement difference caused by wavelength difference according to dispersion parameter
Inventor: KURACHI MIKIO
IPC: G01M11/02
Filed: 1991-07-16
Abstract: A lens measurement arrangement for the automatic measurement of the optical characteristics of opthalmic lenses the use in eyepieces contains a measurement light source (11) which emits a light beam with a specific wavelength, an input device for the dispersion or scattering properties of the lens (15) or the inverse thereof, a correction coefficient storage device and a measurement value computation device. The correction coefficient for correcting measurement difference caused by a wavelength difference is associated with the lens dispersion of scattering parameter of its inverse. USE/ADVANTAGE - E.g. for measuring spherical refractive power. Can produce same measurement values automatically as can be produced with manual measurement system.
Patent DE-4124234-A1 (DE)
Inventor: ZAISER ADOLF
IPC: B27B9/02
Filed: 1991-07-22
Abstract: A hand-held circular saw for a process for making plunge cuts with a saw a blade (10) protected by a casing (3), a pivoting safety guard (2) and an especially spring-loaded kerf guide, having sawteeth (11), with at least one hand-grip (5), with a cutting depth adjustment limited by a top and a bottom dead centre and a base plate (17), whereby at top dead centre the sawteeth (11) are some 3 mm at the most above the bottom of the base plate (17), which can be guided particularly on a guide rail which can be laid upon a workpiece and can be pivoted about an axis parallel to the sight line in relation to the saw blade (10) to make oblique or bevel cuts, is designed in such a way that, at top dead centre of the cutting depth adjustment, the distance between the bottom sawteeth (11) and the base plate (17) is much greater than 3 mm, preferably over 10 mm, whereby spring devices (23) attempt to maintain this distance and plunge saw cuts can be made with the hand-held circular saw (1), advantageously without the special plunge saw previously needed for such sawing processes.
Patent DE-4126520-A1 (DE)
Title: Co-driver's seat for vehicle - uses adjustable head rest and seat extension to provide greater comfort
Inventor: MEILLER HERMANN
IPC: A47C1/023
Filed: 1991-08-10
Abstract: Vehicle seat, especially a co-driver's seat, having a seat unit (12) and a back rest (14) with a head support attached to the back rest and/or an extension attached to the seat unit. The head support has a tongue shaped section (28) which fits into a suitably profiled recess (22) in the face of the back rest and the extension (18) has a tongue-shaped section (50) which fits over a suitably profiled stepped slope (48) on the seat unit. ADVANTAGE - Vehicle seat which is readily modified to accommodate the anatomical features of each individual occupant.
Patent DE-4130917-A1 (DE)
Title: Ceramic coating for outlets of IC engines -  has periphery coated with metallic material comprising titanium oxide, aluminium oxide mixt. and iron oxide
Inventor: KATO HIROMITSU
IPC: F02F1/42
Filed: 1991-09-17
Abstract: Coating (I) having heat insulating properties and having its periphery surface cast with metallic material (II) comprises (a) Ti-contg. Al with a mol. ratio of TiO2:Al2O3 = 1.05:1.25; (b) 4-6 wt.% Fe2O3. (b) is added to (a) and then sintered to produce the ceramic lining. Prepn. of (I) comprises: (i) mixing TiO2 with Al2O3 in mol. ratio as in (a); (ii) sintering the mixt. in (i) to adjust the grain size and Ti-contg. Al powder; (iii) adding Fe2O3 powder, in amt. of 4-6 wt.%, to the mixt. of adjusted, Ti-contg. Al, and calcining the mixt. to form the desired ceramic lining. USE/ADVANTAGE - (I) is used for exhaust outlets of internal combustion engines (claimed). Flaws and cracks in the lining are prevented by casting around the periphery surface of the lining with a metallic material.
Patent DE-4132012-A1 (DE)
Inventor: MUEHLENBERND THOMAS DR
IPC: C08F2/00
Filed: 1991-09-26
Abstract: Novel homopolymers and copolymers of ethylene which are suitable for the production of films and sheeting and have a density of from 925 to 940 kg/m<3>, a melt flow index (MFI) at 190 DEG C and a weight of 2.16 kp of < 1 g/10 min, can be prepared by free-radical polymerisation of the monomers at pressures of from 500 to 5,000 bar and reaction temperatures T of from 40 to 320 DEG C by means of an initiator with virtual exclusion of oxygen in at least n = 3 polymerisation steps. In the first step, the entire amount or a predominant amount of the monomers are polymerised using some of the initiator required until the polymerisation has virtually ceased. The mixture is then cooled to from 20 to 60 DEG C, and a further portion of the initiator and optionally of the monomers is added. This process is repeated in the subsequent steps as far as the nth step, where at least the initiators used in the nth step have a half-value temperature of from 90 to 260 DEG C and the maximum reaction temperature Tmax is at or above 270 DEG C at least in the nth step.
Patent DE-4132282-A1 (DE)
Title: Recycling polyurethane (foam) scrap - by swelling scrap and processing to give flowable gel particulate, adjusting hydroxy number of prod. and reacting with e.g. di:isocyanate
Inventor: DEMUTH MICHAEL
IPC: C08G18/42
Filed: 1991-09-27
Abstract: Recycling of solid or porous (e.g. foamed) plastics consisting wholly or partly of polyurethane to give end-prods. which do not contain toxic or additional by-prods. is effected by working-up the starting material to give a mixt. of low OH no. and then conventionally converting this to the end-prods. The process comprises (i) either (a) swelling the starting material (e.g. polyurethane scrap) in a suitable swelling agent and processing it to give a flowable gel particulate or (b) dissolving or dispersing the starting material in a suitable hydroxy polymer; (ii) adjusting the prod. to the desired OH no.; and (iii) working up the prod. (opt. via a prepolymer) to give a polyurethane which is opt. treated with a hardener system. Also claimed is appts. for effecting the process comprising a stirred reaction vessel fitted with a condenser, a protective gas device and opt. an ultrasonic mill, the novel feature being that such appts. is at least partly coated with a dehydratin catalyst of e.g. chicane, flat-plate or particulate configuration. USE/ADVANTAGE - Polyurethane scrap contg. other components such as other resins, pigments, lacquers, or fibres (e.g. scrap from car upholstery mfr.) can be worked up to give useful prods. which retain in large measure the chemical structure of the scrap. (10pp Dwg.No.0/0)
Patent DE-4133183-A1 (DE)
Title: CCD housing structure assembly - uses automatically bondable foil with numerous outer and inner leads, and chip bonding straps
Inventor: KO JUN SOO
IPC: H01L23/057
Filed: 1991-10-07
Abstract: The CCD structure assembly starts with a foil for automatic bonding with a number of outer and inner leads and chip bonding straps. The chips are bonded onto the latter, followed by bonding of the undersides of each free end of the inner leads to the bonding islands of the chips. Then a light screening layer is formed, whose both edges are secured to certain regions of each outer lead under the chip. A glass element is secured to each surface portion of the inner leads, directly above the chip. Then the spacers are removed by a cutting step, and the outer leads are shaped to the required configuration. Pref. the glass has the same shape of its surface as the chip. ADVANTAGE - Lightweight housing design and simple laminate structure.
Patent DE-4135951-A1 (DE)
Title: Anticorrosive stainless steel baking tin, esp. with removable sides - having base coated on lower surface with dark-coloured material and a circumferential rim with shoulder onto which side sections are fitted
IPC: A21B3/13
Filed: 1991-10-31
Abstract: Baking tin comprises a stainless steel part(2) which is not coated on the surface which faces the prod., but has on its other surface a coating(18) of a dark-coloured heat resisting material. The coating may be a lacquer, a non-stick coating PTFE), an enamel, etc.. The stainless steel is 0.4 to 1.0 mm, pref. 0.5 to 0.8mm, thick. In a tin with a removable sprung side section, the side section(3) is made from stainless steel or from steel sheet with a non-stick coating. The base(2) has a ring(6) into which the side section(3) is placed, the lower surface(8) of the rim being below the surface(7) which carries the cake. The shoulder(9) between these two surfaces provides a vertical face onto which the side section(3) is fitted, and the coating(18) is provided on the outside of only the support surface(7). The rim(6) has a sloping outer section whose top(12) is not higher than the cake support surface(7) and is provided with a folder edge(11) for ease of handling. USE/ADVANTAGE - Used in baking of bread, cakes, etc.. Provides a stainless steel baking tin which is completely immune to rusting, has a practically limitless service life and has good baking characteristics.
Patent DE-4136912-A1 (DE)
Title: Nozzle for spraying water for irrigation purposes - has lower part with square through-hole and upper part with pyramidal recess
Inventor: KERN HEINZ
IPC: B05B1/26
Filed: 1991-11-09
Abstract: The nozzle has a lower part (11) screwed into a tapped hole (3) in a boss in the wall of the supply pipe (2). The lower part of the nozzle has arms (22) extending in diametrically opposite directions, supporting the upper part (14). The lower part of the nozzle has a vertical through-hole (12) of square cross-section. The upper part of the nozzle has a depression in the form of an inverted pyramid with a square base smaller than the cross-section of the square hole in the lower part. The pyramid is either aligned with or set at 45 deg. to the hole. USE/ADVANTAGE - Spraying of water for irrigation purposes. The nozzle sprays the water over a square shaped area.
Patent DE-4137747-A1 (DE)
Inventor: HAAS RAINER VON DIPL ING
IPC: B23B29/00
Filed: 1991-11-15
Abstract: The invention concerns a clamping device for connecting a tool head, which has a cylindrical or at least part-conical bore, with a tool holder which has a matching pin, the tool holder and the tool head being clamped together by means of a shaft designed to rotate about its longitudinal axis. In order to be sure of preventing the shaft from becoming unintentionally unclamped when in the clamped condition, the shaft is locked, in the direction of rotation necessary to undo it, by means of a pawl stop, the locking mechanism being released by an externally operated machine element.
Patent DE-4140975-A1 (DE)
Title: Amplifier circuitry for optical receiver
Inventor: BRAUN KLAUS DIPL ING
IPC: H01P5/02
Filed: 1991-12-12
Abstract: The circuitry comprises a signal source (31) exhibiting a high-ohmic complex output impedance and a low-ohmic amplifier (36) which are matched via a tuned quarter wavelength stage (35).     Pref., the signal source comprises a photodiode incorporated in an optical receiver for converting wideband optical analogue signals into corresp. electrical signals. The quarter wavelength stage is pref. short-circuited at one end, the amplifier being coupled to it at a point which has an input impedance of 500 ohms. The quarter wavelength stage pref. comprises a quarter wavelength microwave line.
Patent DE-4142447-A1 (DE)
Inventor: HOFMANN GEORG
IPC: B22D41/50
Filed: 1991-12-18
Abstract: The invention relates to an immersion casting pipe to feed molten steel from a casting container into a mould having wide and narrow side walls for the manufacture of flat products, consisting of a pipe section connected to the casting container widening towards the narrow side walls of the mould and fitted at the lower end with a central base member with exit apertures for the melt. In order to develop immersion casting avoiding the previous drawbacks and permitting the use of greater withdrawal speeds of up to 6 m/min with strands measuring 50 to 100 mm thick and 600 to 2000 mm wide, it is proposed that the inner wall (1) of the broadening section (4') of the immersion casting pipe (4), together with the opposite wall sections (3') of the base member (3) form flow channels (7), the axes (8) of which make an angle  alpha  of 10 to 22 DEG  with the immersion casting pipe axis (9). The smaller angle is valid for a distance between the narrow sidewalls (2') of the mould of about 600 mm and the larger angle is valid for a distance between the narrow sidewalls (2') of the mould of 2000 mm and above. The distance between the wide sidewalls (2) of the mould is 50 to 100 mm.
Patent DE-4200684-A1 (DE)
Title: Index-gear spur-rack system - has parallel facing spur rack sections
Inventor: SCHMIDT KARL
IPC: F01B9/04
Filed: 1992-01-14
Abstract: The index-gear, spur-rack system has parallel facing spur rack sections which, for short periods only successively within an index gear range, convert radial forces into propulsions from a rotating index gear. The propulsions are identical with the track length of an index gear range. The index gear has only half toothed part or has two, three or more gaps. ADVANTAGE - The index gear-spur rack system is for use in gears, conveyors, production lines, pumps, cutting, welding and compression systems, in agricultural machines, fans, ship's propellers and for gas, petrol or diesel motors.
Patent DE-4201294-A1 (DE)
Title: Device for securing residual material in adjustment area of rolling mill line - entails device moving into pick-up position corresp. to end brake position of roller bars
Inventor: ESTENFELDER GUENTER
IPC: B21B43/00
Filed: 1992-01-15
Abstract: The device moving into the pick-up position comprises one or more joined carriages, which consist of a movement frame (5) movable on wheels with a fixed grid (6), a lift grid (7) and a collecting pocket. Parallel to the feed roller path is a roll-less running track (3) for the carriages. The running track is provided with a hood (9) which is openable and comprising several segments, being pivotable and opening in the end position of the roller bars. ADVANTAGE - Enables bars with higher quality to be sampled.
Patent DE-4202128-A1 (DE)
Title: Hydraulic tree felling wedge - has multi-phase hydraulic oil pressure cylinder with hand oil pressure pump.
Inventor: MUELLER RICHARD
IPC: B66F3/24
Filed: 1992-01-27
Abstract: The lower end of the cylinder has a rigid pressure plate and the upper end has a movable pressure plate. The tree lifter is pushed into the sawn tree in the side opposite the falling direction. When the oil pressure pump is operated the cylinders are extended and lift the tree on the side opposite the falling direction causing it to fall in the required direction. ADVANTAGE - Simplified use without the need for cables.Produces desired direction of fall.
Patent DE-4204875-A1 (DE)
Title: Handle structure for door - is attached to door by means of concealed disc and fixing screw, and includes flange
Inventor: HAASE WOLFGANG
IPC: E05B1/00
Filed: 1992-02-18
Abstract: The handle has a the grip part (1) arranged parallel to the plane of the door. The grip part (1) is formed integrally with a radially projecting shaft which has a relatively thick flange (2). This flange has a circular recess in its end face to fit over the fixing element (12). The fixing element consists of a circular disc (12) which has a circumferential V groove in its periphery. The disc is secured to the door by means of a central screw (20) with a recessed countersunk head. The flange (2) of the handle fits over the disc and is secured by a grub screw (11) with a pointed end which engages the V groove and so holds the handle in place.
Patent DE-4207098-A1 (DE)
Title: Valve arrangement for gas or liq. transfer - has valve operation via two permanent magnets, one providing valve closure, with anti-magnetic seat
Inventor: FUCHS ALFONS
IPC: F16K31/08
Filed: 1992-03-06
Abstract: The valve arrangement is used in a gas or liq. transfer system. It comprises a valve housing with valve seat, valve member and operating device. The operation device consists of two permanent magnets (5), which are arranged such that their action is opposing. At least one of the magnets operates as the valve closing member (5). The valve seat (17,20) may be made of anti-magnetic material. USE/ADVANTAGE - Quickly closing valve action in gas or liq. transfer system.
Patent DE-4209522-A1 (DE)
Title: Repairing defect, esp. holes or thin sections, in thermoplastic insulation esp. cable insulation - by localised melting with laser radiation to fill hole or thicken thin section, suitable for repairing PVC, polyamide, PTFE, ethylene:tetra@fluoroethylene insulation
Inventor: HAMANN CHRISTOPH DIPL ING
IPC: H02G1/16
Filed: 1992-03-24
Abstract: Repairing defects comprises exposing the defect and its immediate surroundings to laser radiation. The laser energy is converted to heat in the insulation or underlying or exposed wire, causing localised melting, so that the insulation from the surrounding area flows and fills the hole or increases the thickness of the defect. Additional insulation material may be provided at the defect and melted. The laser radiation wavelength is suited to optimum energy transfer to the insulation or, if this is transparent or there is a hole, to the underlying material. A Nd:YAG laser is pref. used. USE/ADVANTAGE - The technique is suitable for repairing PVC, polyamide, PTFE and ethylene-TFE insulation. It can also be used with partly crosslinked thermoplastics, thermoplastic elastomers and, to some extent, elastomer. Repair is reliable and fast, taking only a few seconds or, if the insulation is black in colour, a few milliseconds
Patent DE-4211372-A1 (DE)
Title: High precision chuck for tool or workpiece - has axial clamping force of compression spring relieved to release work by finely adjustable screw jack with nut driven by externally rotatable worm
Inventor: GLIMPEL HELMUT DIPL ING
IPC: B23B31/117
Filed: 1992-04-04
Abstract: To allow control of the clamping force and release of the work or tool, the clamping force is relieved by a screw jack (16). The jack housing (15) abuts against a ring clip (24) in the chuck body on one side, and the jack plunger (19) bears against the pressure piece (9) on the other side. The jack plunger is in the form of a screw with a gear nut driven round by a worm. The shaft (26) of the worm passes through a transverse hole and can be turned from the outside to clamp or release the work. ADVANTAGE - Precise adjustment of clamping force.
Patent DE-4215601-A1 (DE)
Title: Radial multiple nozzle with hot runners for injection moulding - has series of heater coils disposed to produce very close temperature control over all bores and hence suit very small thin walled mouldings
Inventor: KURZ JOSEF
IPC: B29C45/27
Filed: 1992-05-12
Abstract: A hot runner radial nozzle has a number of lateral injection runners, and is designed for the production of small/extremely small mouldings, partly with thin walls. It has a main body with a stem from which the lateral runners radiate. Heating coils are located by the lateral runners (melt bores) and surround them and/or their gates to the mould cavity on at least two sides. ADVANTAGE - The system provides precise temp. control exactly where it is required. This enables it to produced mouldings which need such control such as thin-walled small moulding. It also prevents overheating. Tests have shown that it makes possible temp. reductions of up to 50 deg. C or more. It enables very rapid temp. changes to be made in the melt itself and at the very point where temp. control is critical.
Patent DE-4219490-A1 (DE)
Title: Tined conveyor for reciprocating pick=up baler - has tines in sets pivoting together to form rakes and controlled by irregular cam tracks
Inventor: KRONE BERNARD
IPC: A01F15/10
Filed: 1992-06-13
Abstract: The conveyor (7) delivers the crop gathered from the ground through an inlet (9) into the baling passage (6) in synchronism with the movements of the baling piston (10). The tines engaging with the crop form horizontal rakes (22, 23) at right angles to the transport direction and travel round closed fixed tracks, their spindles (26, 27) being driven by cranks and travelling round an axis of rotation (21). The tines forming each rake pivot together and are controlled by irregular cam tracks as they travel round the axis of rotation, turning in the process for a complete revolution in the opposite direction to that in which the cranks turn on the axis of rotation. There can be a cross-member supporting the tines of each rake, turning freely on the cranks and coaxial to the spindle (26, 27). The cranks turn with a driving shaft (20) on the axis of rotation. USE/ADVANTAGE - Tined conveyor for reciprocating pick-up baler gives continuous clean and gentle delivery of crop into baling passage without violent acceleration of rakes.
Patent DE-4220181-A1 (DE)
Title: Heavy duty feed mechanism for cables and tapes in industrial use - has interacting cutter, gripper and discharge stations allowing firm hold and dispensing of accurately cut sections.
Inventor: SCHLEGEL KARL-HEINZ
IPC: B65H35/00
Filed: 1992-06-19
Abstract: The cutter (26) of the cutter/transport station cuts off the tape (22) at a point away from the tape end when the cutter and gripper stations have moved apart by the desired section length.  One of the stations can be locally fixed and the other movable. The cutter transport station has a transport block (23) displaceable on a base plate (1) by a guide unit (27, 28). The fixing unit of this station is pref. a holding-down plate (38) which can be pressed against the tape (22) through the guide slit (35). USE/ADVANTAGE - The appts. is mechanically stable and suitable for long-term use for cutting adhesive tape, cable and wire sections, metal foil, plastics foils etc.