baber/WOPTO huggingface dataset:
Patent EP-0247308-A3 (EP)
Title: Method for automated optical inspection of printed circuits
IPC: G06T1/00
Filed: 1987-03-20
Abstract: The surface of a printed circuit is optically scanned and the data acquired, 
after some preprocessing, compared to reference data representing a fault-free 
printed circuit. The preprocessing involves a reduction of the conductivity of 
the lines in the circuit to connectivity of particular features of the lines. The 
comparison is carried out by establishing a correspondence between global 
labels in check points of a certain type, and pre-computed reference global 
labels in corresponding points, and the global labels of other check points are 
compared with corresponding ones of the reference, with any 
miscorrespondence indicating a defect of the 'open circuit' type, while any 
merge event between different global labels indicates a defect of the 'short 
circuit' type.  
     The apparatus consists of an optical front end (1) having a data acquisition 
scanner and pre-processor (6); a signal distributer (2) comprising a first 
look-up table (8), a transformation unit (9) and a second look-up table (10); a 
reference comparison subsystem (4) comprising a reference disk (11), a 
decompressor (12), a comparator (13) and a micropocessor (15); and a general 
conductivity analysis subsystem (3) comprising a second level signal 
processor (17) and a host computer (14), the said subsystems being connected 
to a main host computer (5).
Patent EP-0244722-A3 (EP)
Title: Continuous process and apparatus for the preparation of gypsum for industrial use from residual gypsum
IPC: C04B11/02
Filed: 1987-04-25
Abstract: 1. Continuous process for the obtaining of industrially usable gypsum from industrial waste gypsum by partial or complete hydrothermal conversion of waste gypsum to calcium sulphate alpha-hemihydrate in a tube reactor with the use of steam at temperatures of 130-180 degrees C., whereby hot steam is passed in co-current with the gypsum suspension into a vertically standing reactor tube and, by means of residence times of 3 to 20 min., the degree of reaction is controlled, characterised in that gypsum suspension and hot steam are introduced at the head of the reaction tube and the rate of flow amounts to 0.01-0.1 m/s, preferably 0.02-0.05 m/s and the suspension of the conversion product is withdrawn at the foot of the reaction tube.
Patent EP-0254024-A3 (EP)
Title: Process and installation for converting sewage sludge filter cake to oil, gas and coke by pyrolysis
IPC: C02F11/13
Filed: 1987-06-13
Abstract: For a design of such a process and installation which is particularly favourable in terms of energy balance and of accuracy of process control, the dewatering of the filter cake is carried out in two stages, initially carrying out a preliminary evaporation under partial vacuum in a vacuum preliminary evaporation apparatus (3) or a preliminary drying in an evaporating apparatus (3a), and subsequently carrying out a residue evaporation under atmospheric pressure in a residue evaporating apparatus (4). This is followed by conversion in a converting apparatus (5). There is forced circulation and forced transport of the filter cakes in defined part-streams in all the apparatuses (3, 3a, 4, 5, 7). The apparatuses are designed as multiple pipe apparatuses in the form of modules. 
<IMAGE>
Patent EP-0251053-A3 (EP)
Title: Drill
IPC: A01F15/00
Filed: 1987-06-19
Abstract: Seed drill having a central storage bin which is carried front-mounted by an agricultural tractor, and having a metering system which feeds the metered seed in adjustable amounts to sowing shares or other output elements behind the agricultural tractor, a conveyor being provided to convey the seed from the front-mounted storage bin to the sowing shares arranged behind the agricultural tractor. In order to improve the known seed drill so as to prevent the abrasion of dressing and damage to the germ of the seed and at the same time to achieve a more uniform metering of the seed onto the individual sowing shares, it is provided that an intermediate bin (12) is arranged behind the agricultural tractor (1), that the seed is fed from the central storage bin (10) to this intermediate bin (12) via the conveyor (18), that the metering members (13) of the metering system are arranged on the intermediate bin (12), and that the seed is guided from these metering members (13) to the sowing shares (15) or other output elements (Fig. 1). <IMAGE>
Patent EP-0250001-A3 (EP)
Title: Copper alloy
IPC: C22C9/04
Filed: 1987-06-20
Abstract: The copper alloy consists of 0.05 to 0.4 % of zinc, 0.02 to 0.3 % of magnesium and 0.02 to 0.2 % of phosphorus, the remainder being copper and impurities resulting from manufacture, and is intended to be used especially as a material for continuous casting moulds.
Patent EP-0258588-A3 (EP)
Title: Optical surface-measuring device
IPC: G01B11/30
Filed: 1987-07-15
Abstract: To permit the testing of surfaces which have constricted access, such as grooves, bore holes and the like, a housing retains a laser light source, a collimator, a beam splitter and light detector. Light is reflected from the collimator, by a parallel offset dual parallelogram prism into an elongated hollow arm (8) which is pivotally mounted by a pivot axis (12) in the housing. The housing retains a positioning element (15) positioning the arm accurately with respect to the housing. A position transducer or sensing means senses repositioning of the housing to maintain the light spot from the laser, which is projected into the arm and outwardly thereof at right angles through an objective lens in focus. If the profile changes, the reflected light spot changes position on the light detector which controls the positioning system (15) to reposition the arm to maintain focus. The repositioning movement is detected by the position sensing or deflection transducer, which provides an output signal, representative of the change in profile on which the light spot is focussed.
Patent EP-0259775-A3 (EP)
Title: Circuit arrangement for limiting, regulating and in some cases interrupting the collector current of the switching-transistor in the primary circuit of a switching power supply
IPC: H02M3/335
Filed: 1987-09-02
Abstract: 1. Circuit arrangement for limiting, regulating and in some cases interrupting the collector current (Ic ) of the switching transistor (T) in the primary circuit, using a current probe (SF) connected in series to the switching transistor (T) and a control component containing a first comparator (V1) and a pulse-duration modulator (PDM), which control component influences the duty ratio of the switching transistor (T) as a function of a comparison value gained from the output signal of the current probe (SF) and a reference signal (UREF1 ), characterized in that the output of the current probe (SF) is connected to the first input of a second comparator (V2), the second input of which is fed with a reference signal (UREF2 ) which is higher in relation to the reference signal (UREF2 ) which is higher in relation to the reference signal (UREF1 ) of the control component (RBS), in that the output of the second comparator (V2) is connected to the set input (S) of a bistable flip flop (KS) and in that the output of the bistabile flip flop (KS) is fed to the input of a switch-off device connected upstream of the pulse-duration modulator (PDM).
Patent EP-0260692-A3 (EP)
Title: Machine tool with a drilling and milling spindle carrier movable in the z direction on a machine body
IPC: B23Q3/06
Filed: 1987-09-17
Abstract: A short-stroke drilling and milling machine (1) with a machine body (2) has a tool carriage (3) which can move in the X and Y directions and, above it, a spindle carrier (4) for tools, which can move in the Z direction. The tool carriage bears two vices (5). To be able to machine workpieces, for example shafts, of any length on this machine, arranged fixedly on the machine body, but able to swivel and/or rotate with respect to the latter there is a centring-clamping device (6), which presents a passage for the workpiece in the X direction. For machining, the workpiece is clamped in the vices and released by the centring-clamping device. Thereafter, the workpiece carriage moves into an extreme position away from the centring-clamping device. Then, the centring-clamping device closes, the vices open and the workpiece carriage moves into a position alongside the centring-clamping device. Then, the vices are closed once again, whereas the centring-clamping device opens; the workpiece can be drawn through the clamping device in order to be machined in the next stage. The apparatus dispenses with the high space requirements and costs of long-bed machines. <IMAGE>
Patent EP-0262590-A3 (EP)
IPC: H01Q5/45
Filed: 1987-09-24
Abstract: A device for separating signals in the long or 
radar wavelength bands from signals in the short or 
infrared to ultraviolet wavelength bands which occupy 
a common area. A waveguide for directing radar band 
wavelengths has apertures (64, 76) in opposing walls (42, 44) of the 
waveguide (40), a first (64) of which is rectangular and has a 
greater length (65) and width (66) than the broadwall dimension 
of the waveguide; and the other (76) of which is circular 
with a diameter less than one-half the free space 
wavelength of the long wavelength signal. A 
pyramidal feedhorn (14) directs the long signal wavelength 
through the rectangular aperture, where the 
short-wavelength signal, which also comes down 
through the feedhorn passes through the second 
aperture. The long-wavelength component instead of 
passing through the second aperture is deflected into 
the waveguide. A short-wavelength detector (84) is 
positioned at the point of convergence of a ray cone 
passing through the first and second apertures, thus 
making the detected signal available for further 
signal processing.
Patent EP-0257707-A3 (EP)
IPC: D03D49/06
Filed: 1987-08-18
Abstract: Method for controlling the warp let-off on weaving 
machines, with the characteristic that the method consists 
of: detecting the variation with time of at least one of 
the parameters which are a function of the warp tension and 
speed of motion of the warp threads (2); taking the 
detected signal and removing the effects due to variations 
in the weave pattern; and using the resulting cleaned 
signal to control at least one warp drive motor (14A/14B).
Patent EP-0274766-A3 (EP)
Title: Flow regulator for drip infusion
IPC: A61M5/14
Filed: 1987-08-20
Abstract: A flow regulator for drip infusion, comprising a rigid main body (1) in which a rigid flow path is integrally formed. The flow path is substantially omega-shaped, and has a V-shaped cross section in its middle section, of which the upper side is open and closed by a flexible disc (2) which has a ridge (e') extending perpendicular to the flow path and can be pressed to change the effective size of an orifice formed between the ridge (e') and the V-shaped flow path, thereby allowing for a stable control of the flow rate.
Patent EP-0240277-A3 (EP)
IPC: G06K7/10
Filed: 1987-03-30
Abstract: A photosensor has an optical fiber bundle (2) comprising 
a plurality of optical fibers (3), one end (2b) of which is 
spreadly arranged in a row opposite to a surface of an object 
to be detected and the other end (2a) of which is bundled in a 
small area corresponding to the photo-sensing portion (6a) 
of a photoelectric conversion element (6). Accordingly, an 
area, to be detected, of the object can be widely selected in 
spite of using a conventional phototransistor.
Patent EP-0258992-A3 (EP)
IPC: B23Q3/157
Filed: 1987-07-24
Abstract: An automatic tool changer for automatically exchanging tools (T, 
 t ) between a tool magazine (37) and a machine tool spindle 
(9), the automatic tool changer comprising a tool 
exchange arm (1) having chuck means (2, 3) adapted to grip said tools 
(T, 
 t ); rotation effecting means (13, 23, 33, 34) for rotating 
the tool exchange arm (1); and axial movement effecting 
means (16, 25, 28) for effecting axial movement of the tool exchange 
arm (1) characterised in that each of the rotation 
effecting means (13, 23, 33, 34) and the axial movement effecting 
means (16, 25, 28) comprises a cam mechanism (23, 25) and a 
pressure fluid operated mechanism (33, 34, 28) which are independent 
of each other, the cam mechanisms (23, 25) being operable 
to exchange a tool (T, 
 t ) between the spindle (9) and the chuck means (2, 3) and 
the pressure fluid operated mechanisms(33, 34, 28) being 
operable to exchange a tool (T, 
 t ) between the tool magazine (37) and the chuck means (2, 
3) while a machining operation is being carried 
out.
Patent EP-0296492-A3 (EP)
Title: Process for the oxidation of polyethylene
IPC: C08F8/06
Filed: 1988-06-16
Abstract: A process for the preparation of oxidised polyethylenes by oxidising finely divided low density polyethylene at elevated temperatures by means of an oxidation gas comprising air and/or oxygen, in which from 0.015 to 0.5% by weight of a free radical-forming organic compound has been admixed with the polyethylene and an oxidation gas containing from 30 to 600 mg, in particular from 80 to 300 mg, of ozone per kg of polyethylene is introduced per hour, and in which completion of the oxidation at elevated temperature is followed, if desired, by vacuum treatment. The oxidised polyethylenes are used as lubricants in the extrusion of polyvinyl chloride.
Patent EP-0301384-A3 (EP)
Title: Circuit arrangement for processing slanting, in particular hand-written characters
IPC: G06V30/10
Filed: 1988-07-19
Abstract: An editing arrangement for character recognition has a binary coded character stored in a X/Y-addressable image signal memory from which signals are first read out column-by-column, whereby a first character shadow is formed from the result by projection of successive columns respectively comprising black points onto the character base line. The stored character pattern is then repeatedly read out in accord with a scanning at positive and/or negative oblique angles relative to the Y-axis until as minimum character shadow is produced. The scanned pattern yielding this minimum character shadow is then selected for further evaluation of the character.
Patent EP-0287209-A3 (EP)
Title: An apparatus and method for quantitatively delivering food materials
IPC: A23G3/02
Filed: 1988-03-10
Abstract: An apparatus and method for measuring a uniform volume and weight of food material, and continuously delivering it, is provided. The apparatus (1) comprises screws (5) disposed at the bottom of a hopper (3) and a delivering means (7) having a rotating cylinder (27) and vanes (29) freely slidable in respective pairs of slots (31) formed in the periphery of the cylinder. The delivering means is disposed in a housing (9) and both ends of the vanes slidably contact the inner surface (21) of the side wall of the housing to form compartments (39) between each adjacent pair of vanes. In the apparatus, the material is fed by screws (5) and introduced into the compartment for measuring. Since the rotational speeds of the screw and cylinder are respectively controlled to introduce a sufficient amount of the material into the compartment, the density of the material in the compartment becomes uniform. The material is then continuously discharged from the apparatus.
Patent EP-0285284-A3 (EP)
Title: N-phenethylaminoalkyl-benzamide anti-arrhythmia agents
IPC: C07C237/30
Filed: 1988-03-16
Abstract: Compounds of the formula: <CHEM> and their pharmaceutically acceptable salts, wherein R<1> and R<5> are each independently C1-C4 alkyl; R<2> and R<3> are each independently H or C1-C4 alkyl; R<4> is H or C1-C4 alkoxy, and n is 2, 3 or 4, are anti-arrhythmia agents useful for the treatment of cardiac conditions.
Patent EP-0294971-A3 (EP)
IPC: C08L51/04
Filed: 1988-05-26
Abstract: Disclosed are normally solid polymers that are the result of 
addition copolymerization of the monomers acrylonitrile, methyl 
methacrylate, -methylstyrene and/or styrene, and indene in the 
presence of an unsaturated rubbery polymer, said polymers containing 
10-200 parts by weight rubbery polymer, 10-40 parts by weight 
acrylonitrile, 5-50 parts by weight methyl methacrylate, 5-45 parts 
by weight of one or both of styrene and -methylstyrene and 4-45 
parts by weight indene in the polymer structure, per 100 parts by 
weight of the total parts of acrylonitrile, methyl methacrylate, 
styrene, -methylstyrene and indene combined in said polymer 
structure. Also disclosed are vinyl chloride polymers compounded 
therewith to increase the heat distortion temperature as well as the 
impact resistance.
Patent EP-0298753-A3 (EP)
IPC: C08L79/04
Filed: 1988-07-08
Abstract: A method is described for the production 
of a molecular composite suitable for use as a 
structural material for aircraft, automobiles and 
spacecraft, the method comprising dissolving a 
rigid aromatic polymer and a matrix polymer in 
an acidic solvent comprising an aqueous phosphoric 
acid solution and subsequently removing said solvent 
to yield a molecular composite with excellent structural 
properties with improved resistance to physical 
degradation and reduced corrosive effect on metals 
which come into contact therewith.
Patent EP-0316170-A3 (EP)
Title: Method for the identification of antigens expressed in vivo, diagnostic assays therefor and vaccines containing them
IPC: C12Q1/6888
Filed: 1988-11-10
Abstract: A method for identifying all of the antigens from a 
pathogenic organism such as Epstein-Barr Virus which are 
expressed  in vivo  comprises generating a gene bank using 
nucleic acid fragments which include all of the nucleic 
acid from a given organism and direct screening of said 
gene bank with serum from a subject with clinical 
symptoms caused by the pathogenic organism. The 
antigens identified can be used as a basis for various 
diagnostic assays and for preparing vaccines.
Patent EP-0279749-A3 (EP)
IPC: D05B35/06
Filed: 1988-02-17
Abstract: An elastic band feeding and tensioning mechanism 
and method for the application of an elastic band (13), having 
at least a portion thereof tensioned, on a fabric piece (69) 
fed under a stitching needle (14) of a sewing machine. A 
footplate guide is provided for positioning the elastic band (13) 
in alignment on a fabric piece (69). A sewing guide member (11) is 
adapted for securement to a foot arm (12) of a sewing machine, 
and has a jaw opening (18) for receiving the elastic band. 
A guide mechanism (15) is provided for guiding the elastic band (13) 
toward the jaw opening (18). The elastic band is advanced 
through the sewing machine by the feeddog (9) of the sewing 
machine and tension is applied to the band by tension 
members (20-25). The tension members comprise a drive and idler 
rolls (20,22) driven at a band feeding speed slower than the feeddog (9), 
and a further band stretching roll (25) which instantaneously 
stitches the band between the drive roll and feeddog. A 
control circuit activates the tension members whereby to 
feed a predetermined length of the elastic band in a pre­
determined stretched condition through the sewing guide 
member for sewing the stretched elastic band on the fabric 
piece. A cutting element also cuts the elastic band at a 
predetermined location.
Patent EP-0321414-A3 (EP)
Title: Self-protecting syringe
IPC: A61M5/315
Filed: 1988-12-16
Abstract: The syringe comprises means which all contribute to make it self-protecting and non-reusable. The elements of the piston (30, 60, 40) are shaped so that only one push under the action of the piston rod (50) is possible, together with the "vein test". All these elements can be separated from one another. The safeguard against reuse is reinforced by the fitting of a collar (70) at the top of the syringe body. The fitting part of the collar at the same time ensures better guiding of the displacement of the piston rod (5). The latter has a hollow conformation, and may be plugged into the nozzle (12), so that it also protects the needle from any outside contact. <IMAGE>
Patent EP-0324485-A3 (EP)
IPC: G03C1/00
Filed: 1989-01-12
Abstract: A photosensitive resin composition suitable for a 
water-developing type photosensitive resin plate as a patrix 
of a matrix for a rubber plate which comprises a basic 
nitrogen containing polyamide; a monomer having polymeric 
unsaturated bond; a compound of the formula (I): 
  
wherein R₁ and R₂ are the same or different and are 
hydrogen, alkyl, aryl or a derivative thereof; m and n are 
integer of 0 to 4 and the sum of m and n is not less than 1; 
and M is an alkali metal, an alkaline earth metal or a 
transition metal, and a N-nitrosoamine compound of the 
formula (II) of the formula: 
  
wherein R₃ and R₄ are the same or different and are halogen, 
hydroxyl, carboxyl, alkyl, cycloalkyl, optionally 
substituted aryl or acyl group; X and Y are carbonyl or -O-; 
and p and q are 1 or 0, or a salt thereof.
Patent EP-0338215-A3 (EP)
Title: Process for the preparation of halogen-substituted phthalic anhydride
IPC: C07C51/567
Filed: 1989-02-24
Abstract: A process for the preparation of halogen substituted phthalic 
anhydrides of the formula: 
  
wherein X is a halogen, by the reaction of a halogen substituted 
tetrahydrophthalic anhydride of the formula: 
  
or a geminal dihalogen substituted hexahydrophthalic anhydride of 
the formula: 
  
in a vapor or melt phase while mixed with a halogen at a 
temperature of 200-500°C.
Patent EP-0331096-A3 (EP)
Title: Silver halide photographic light-sensitive material capable of obtaining high contrast images
IPC: C07D307/20
Filed: 1989-02-28
Abstract: A silver halide photographic light-sensitive material is 
disclosed, which inhibited in formation of peper spot in a 
halftone image and capable of making extremely high contrast 
image thereon. The light-sensitive material contains a 
compound represented by the following formula; 
  
wherein A₁ and A₂ are each an arylene group or a divalent 
heterocyclic group; L is a linking group; z is a formyl group, 
an acyl group, a sulfonyl group, a carbamoyl group, a 
sulfamoyl group, an alkoxycarbonyl group, a thioacyl group or 
a   
 
- 
- 
-X group; X is -NR₆R₇ or -OR₈, in which R₆ and R₇ are 
each a hydrogen atom, an alkyl group, an alkenyl group, an 
alkynyl group, a heterocyclic group, a hydroxy group, an 
alkoxy group, an alkenylkoxy group, an alkynyloxy group, an 
aryloxy group or a heterocyclic oxy group, and R₈ is a 
hydrogen atom, an alkyl group, an alkenyl group, an alkynyl 
group, an aryl group or a heterocyclic group; n is 1 or 2; m 
is 0 or 1; R₁ and R₂ are each a hydrogen atom, an alkyl group, 
an alkenyl group, an alkynyl group, an aryl group, a 
heterocyclic group or an amino group, provided that when n is 
1, at least one of the R₁ and R₂ is an amino group; R₃ is a 
hydrogen atom or an alkyl group; and R₄ and R₅ are each a 
hydrogen atom or a substituent.
Patent EP-0336408-A3 (EP)
IPC: D03D49/60
Filed: 1989-04-06
Abstract: Beschrieben wird eine Luftwebmaschine mit einem Webblatt und im Webblatt 
angeordnetem Schußeintragskanal, wobei vor dem Webblatt ein 
Breithaltertisch angeordnet ist.  
     Es liegt die Aufgabe zugrunde, eine Luftwebmaschine mit Webblatt und 
Breithaltertisch so weiterzubilden, daß unabhängig von der Art des 
Gewebes der Bindepunkt immer relativ in der Mitte des 
Schußeintragskanals gebildet wird.  
     Hierzu ist es vorgesehen, daß der Breithaltertisch einen in Richtung auf 
die Mitte des Webblattzahnes weisenden Vorsprung aufweist, dessen 
Oberseite eine Verlängerung der Auflagefläche des Breithaltertisches 
bildet.