baber/WOPTO huggingface dataset:
Patent EP-0246837-A3 (EP)
IPC: E21B43/117
Filed: 1987-05-18
Abstract: A perforating gun (42) has explosive charges (60, 62, 64, 
66, 68, 70, 72) spirally disposed around its circumference in 
accordance with a displacement angle defined as (m/­
p)(360°), where p is a whole number greater than 4 and m is a 
whole number greater than 1 but less than (p-1) and where 
m/p is an irreducible fraction. A U, or horseshoe, shaped 
retainer clip (156) holds individual charges in respective 
holes (92, 94, 96, 98, 100) and cavities (118) of an outer carrier 
tube (84) and an inner carrier tube (86), respectively, to 
prevent horizontal or transverse movement of each charge 
and thereby hold it in contact with an axially extending 
etonator cord (124).
Patent EP-0246874-A3 (EP)
IPC: C08L81/04
Filed: 1987-05-20
Abstract: A modified liquid polymer is produced by blending at least one mercaptan-­
terminated liquid polymer having functional (e.g. polysulphide) linkages in 
the backbone with an aqueous latex or dispersion of at least one high molar 
mass mercaptan-terminated solid linear polysulphide rubber and removing the 
water to form a solution of the solid component in the liquid component. The 
modified liquid polymers and industrial compositions containing them are 
useful, for example, as sealants, adhesives and moulding compounds. The 
modified liquid polymers retain cross-linkable mercaptan terminations and may 
themselves be cross-linked to produce new cross-linked polymers which are 
useful for similar purposes.
Patent EP-0264268-A3 (EP)
Title: Hydrophobic inorganic structures
IPC: C04B38/00
Filed: 1987-10-14
Abstract: Three dimensional hydrophobic substantially inorganic porous structure comprises a myriad of cavities interconnected by holes in which the diameters of the cavities are in the range of from 0.5 to 100 mu m and the diameters of the holes are in the range of from 0.1 to 20 mu m the porosity of the structure having a narrow pore size distribution with the cavities having a pore volume of at least 2 cc/g for a predetermined 10 mu m range of sizes. The structure is preferably an inorganic oxide selected from the group comprising alumina, silica, titania, zirconia and mixtures thereof. The structure is preferably made from an oil-in-water emulsion with a silylating agent in the internal phase so as to render the structure hydrophobic.
Patent EP-0273794-A3 (EP)
Title: Process for producing aminoplast binders
IPC: C09J161/34
Filed: 1987-11-26
Abstract: Process for producing binders suitable for the adhesive bonding of wood, according to which urea is condensed with a precondensate of urea and formalin or with a solution of formalin and with a formo- phenolic precondensate, melamine being added before, with or after the formo-phenolic precondensate. Application to the manufacture of adhesives containing little free phenol and formalin.
Patent EP-0275050-A3 (EP)
IPC: C04B41/52
Filed: 1988-01-08
Abstract: A clay plumbing fixture (1) comprising a fired clay 
body (5) with a vitreous glaze (6) over a surface thereof 
and a coating system of either (a) a primer coating (10) 
over the glaze (6) and an organic polymeric topcoating 
(11) over the primer coating (10) or (b) an organic 
polymeric topcoating (11) over the glaze (6). The primer 
coating (10) of coating system (a) or the topcoating (11) 
of coating system (b) contains a compatible silane 
compound to improve adhesion of the topcoating under wet 
service conditions. The topcoating (11) of either 
coating system (a) or (b) can have a selected color.
Patent EP-0282033-A3 (EP)
Title: Polyphase alternator and dual voltage battery charging system for multiple voltage loads
IPC: H02J7/16
Filed: 1988-03-09
Abstract: A 24/12 volt battery power supply for a 
vehicle includes two 12 volt batteries connected in 
series, and having first and second 24 volt terminals 
to the opposite ends of the batteries and a 12 volt 
terminal to the center common connection of the 
batteries. The 12 volt loads are divided into equal 
right and left side vehicle loads and the right side is 
connected across one battery and the left side is 
connected across the second battery. A three phase 
wye-connected alternator has the winding connected to a 
full wave three phase rectifier, the D.C. output of 
which is connected to the 24 volt terminals. The 
center common connection of the winding is connected 
directly to the 12 volt terminal. The system operates 
with balanced currents and charges on the two 12 volt 
batteries so long as the 12 volt loads remain 
balanced. Control loads are selectively connected to 
the right and left side loads if a 12 volt load is 
lost, disconnected or otherwise changes to maintain the 
balanced system but only if the imbalance due to lost 
loads is large. In another embodiment, the full wave 
rectifiers are connected to conduct the opposite half 
cycles of the alternator output. The controlled 
rectifiers for each half cycle have the gates connected 
to a common gate source, and a logic circuit monitors 
the voltage of each battery and actuates one or the 
other of the rectifier groups to prevent one battery 
segment from significantly varying in voltage with 
respect to the other.
Patent EP-0294603-A3 (EP)
IPC: H01L21/00
Filed: 1988-05-10
Abstract: A method for electrostatic removal of micron and 
sub-micron sized contaminant particles is disclosed. 
The method comprises creating a potential difference 
with a megavolt/cm electrostatic field between two 
conducting bases (12, 16) in a predetermined geo­
metrical relation to each other. An insulator (18) 
(e.g. a dielectric film) is maintained at or near 
contact between one of the bases and the surface to 
be cleaned to electrostatically remove particles from 
said surface. The bases can be made to move relative 
to each other and the surface to be cleaned.
Patent EP-0296561-A3 (EP)
IPC: C08F4/60
Filed: 1988-06-22
Abstract: A catalyst and its use in polymerizing olefins, wherein the 
catalyst is prepared by contacting a support with a compound of titanium 
and/or vanadium.
Patent EP-0305734-A3 (EP)
IPC: G01R1/073
Filed: 1988-07-27
Abstract: Bei einer Prüfanordnung für Leiterplatten mit Kontaktnadeln 
zur Kontaktierung der zu prüfenden Leiterbahnen, einer Rangier­
leiterplatte zwischen den Kontaktnadeln und einer Nadelträger­
platte sowie einem Kontaktflächenfeld, auf das die Nadeln der 
Nadelträgerplatte aufsetzen und mit dem eine Verbindung zu 
den elektronischen Auswerteeinheiten des Prüfsystems herstell­
bar ist, werden zur Reduzierung der Anschlußpunktezahl im 
Kontaktflächenfeld Zonen gleicher Kontaktpunktzahl gebildet.  
     Die Erfindung ist vor allem bei Prüfanordnungen für Leiter­
platten in der Fertigung für elektronische Geräte anwendbar.
Patent EP-0309889-A3 (EP)
IPC: B21D35/00
Filed: 1988-09-21
Abstract: Im Bauteileband (2) gehaltene Bauteile (1) mit aus der Strei­
fenebene herausragenden Abschnitten werden zusammen mit einem 
Abstandsband (4) in großer Länge auf einer Haspel aufgewickelt. 
Dabei wird das Bauteileband (1) zwischen zwei Lagen des flexib­
len Abstandsbandes (4) gehalten. Dieses ist beidseitig mit 
Kunststoffklötzchen (6) versehen, die an den flachen Abschnit­
ten des Bauteilebandes (4) anliegen und einen Freiraum für die 
z. B. hochgebogenen Partien (3) der Bauteile(1) schaffen. 
Dadurch können die Bauteile (1) nicht deformiert werden.
Patent EP-0310963-A3 (EP)
Title: Circuit with a comb filter for causing color difference signals to coincide on each scanning line
IPC: H04N9/86
Filed: 1988-09-30
Abstract: A circuit for producing a chroma signal which 
includes both of a first (R-Y) and a second (B-Y) color 
difference signal on each of scanning lines in response to 
a line-sequential color difference signal in which a first 
and a second color difference signal appear alternately 
on consecutive scanning lines. A carrier generator (40, 
FIGS. 3 and 5) generates a first (SC2a) and a second 
(SC1a) color subcarrier which are different in phase from 
each other in synchronism with the line-sequential color 
difference signal. The first color subcarrier (SC2a) is 
subjected to balanced modulation at a first modulator (60) 
which uses the first color difference signal (R-Y) for the 
modulation while the second color subcarrier (SC1a) is 
subjected to balanced modulation at a second modulator (66, 
68, 70) which uses the second color difference signal 
(B-Y). The outputs of the first (60) and second (66, 68, 
70) modulators are added together by a first adder (74). 
A delay circuit (80) is provided for delaying an output of 
the first adder (74) by a period of time which is substan­
tially equal to one horizontal scanning period. The output 
of the delay circuit (80) is added to the output of the 
first adder (74) by a second adder (82) to produce the 
chroma signal. The circuit eliminates the need for 
operations heretofore performed for bringing color 
difference signals into coincidence at the baseband and 
thereby the need for delay circuits, switching circuits 
and adjusting circuits which implement such operations.
Patent EP-0315123-A3 (EP)
Title: Drilling tool
IPC: B23B51/00
Filed: 1988-11-01
Abstract: A drilling tool (10) for producing undercuts (36) in blind cylindrical pilot holes (17), with a drill shank (12) which roughly corresponds in diameter to the diameter of the pilot bore (17) and is connected at its tip (11) to a thrust piece (14) and can be supported on the thrust piece (14) via a sloping surface (13) and also has a lateral cutting edge (15) which projects radially beyond its outer periphery, produces the undercut (36) when it is acted upon axially and is flattened relative to the drill shank (12) to an extent enabling it to be inserted into the pilot hole (17), in which arrangement the thrust piece (14) is fastened directly to the sloping surface (13) of the drill-shank tip (11) in such a way as to be radially movable by means of an undercut guide groove (71) parallel to the sloping surface, in which guide groove (71) an undercut-strip-shaped coupling projection (72) engages axially in a positive-locking manner, and the thrust piece (14) has a sliding surface (73) which is arched transversely to the radial direction of movement of the lateral cutting edge (15) and on which the likewise arched sloping surface (13) of the drill-shank tip (11) can be supported. In order to improve a drilling tool (10) of the type mentioned at the beginning in such a way that the strength of the connection between the drill-shank tip (11) and the thrust piece (14) is adequate even in rough operation, in other words so that the connection is sufficiently stable, the drilling tool (10) is designed in such a way that the coupling projection (72) is attached to the drill-shank tip (11), and the guide groove (71) is located in a thrust piece (14) with semicircular-like arching of its sliding surface (73). <IMAGE>
Patent EP-0274429-A3 (EP)
IPC: D21H17/69
Filed: 1988-01-07
Abstract: The invention relates to an aggregated kaolinitic 
pigment having improved physical and optical characteristics 
when incorporated as a filler or coating pigment in paper. The 
pigment may be produced by treating a particulate kaolin with 
an alkaline earth metal carbonate or hydroxide or alkali metal 
carbonate, and urea or an organic amine. The pigment consists 
of porous aggregates of kaolin particles.
Patent EP-0326728-A3 (EP)
Title: Diorganopolysiloxane-azobenzene alternating copolymers and methods for their preparation
IPC: C08G77/54
Filed: 1988-02-03
Abstract: Novel diorganopolysiloxane-azobenzene alternating 
copolymers composed of repeat units having the formula 
  
wherein  n  has a value greater than or equal to 1; each 
R¹ is independently selected from a group consisting of 
a hydrogen atom, a monovalent hydrocarbon group and an 
alkoxy group; each R² is independently selected from a 
group consisting of a monovalent hydrocarbon group and 
an alkoxy group; each R³ is a linking group selected 
from a group consisting of an oxygen atom, C₂-C₆ 
alkylene groups, -O(C=O)-, -R⁴-N(R⁵)-(C=O)-, and 
-R⁶-(C=O)-N(R⁷)-,  
are described. These copolymers undergo reversible photo­
mediated changes in their viscosity and absoprtion specta. 
Also described are methods for preparing these novel 
copolymers.
Patent EP-0291302-A3 (EP)
Title: Electric cooking oven
IPC: F24C7/08
Filed: 1988-05-12
Abstract: A multifunction cooking oven in which temperature and mode of operation are controlled by a data processor, for example a microprocessor. The sensor (14) temperature may be corrected by reference to stored calibration data and the corrected temperature may be displayed. The settings may be made by means of a membrane switch panel (15), and may include operating programs.
Patent EP-0311270-A3 (EP)
IPC: F16L58/10
Filed: 1988-09-20
Abstract: A method for making endless lengths of nylon 
coated metal tubing which coating has high mechanical 
strength characteristics and a low gloss surface 
finish. The method includes passing the formed tubing 
through a first powder coating region and applying a 
layer of nylon generally uniformly surrounding the 
circumference of the tubing. This first nylon powder 
coating is heated sufficiently to cause the nylon 
coating to achieve complete melt-flow into a continuous 
first nylon coating region which would have a relatively 
high gloss. The coated tubing is next passed through a 
second powder coating region with the surface 
temperature of the first coating still above the melting 
temperature of the nylon. At this second coating region 
a second powder coating of the same type of nylon is 
applied. The second coating is cooled below the melting 
point of the nylon before the second coating completely 
melts leaving the outer surface with a very low gloss 
surface finish.
Patent EP-0323018-A3 (EP)
Title: Self-seating flapper valve for an insufflation cannula assembly
IPC: A61M13/00
Filed: 1988-11-18
Abstract: A cannula assembly (2) for use in conjunction with insufflatory surgical techniques includes a cannula (4), a housing (6) mounted on one end of the cannula (4), and a flapper valve (32,34) mounted in the housing (6). The flapper valve includes a valve seat (32) which is situated at an opening (10) formed in the housing (6), a valve plug (34) which is adapted to engage the valve seat (32) to form a substantially gas tight seal with the valve seat (32), and a support plate (54) on which the valve plug (34) is mounted and which is biased to pivot the plug (34) into and out of engagement with the valve seat (32). The valve plug (34) is movable on the support plate (54) so as to be self-aligning with the valve seat (32) when the plug (34) and valve seat (32) are in engagement.
Patent EP-0279808-A3 (EP)
IPC: B29C43/52
Filed: 1988-02-16
Abstract: Bei einem Verfahren zur Herstellung von Formteilen aus 
einem gegebenenfalls mit Kurzfasern verstärktem thermo­
plastischen Kunststoff, werden Kunststoff-Plattenzuschnit­
te die eine Dicke zwischen 1 bis 12 mm haben, auf eine 
Verarbeitungstemperatur gebracht, bei der sie zwar pla­
stisch aber an ihrer Oberfläche nicht oder zumindest noch 
nicht wesentlich klebrig sind. Die heißen Plattenzu­
schnitte werden kann in die Matrize (3) einer auf Tempe­
raturen unterhalb der Vicat-Erweichungstemperatur des 
Kunststoffes gehaltenen Form eingebracht, und durch Ein­
tauchen der Form-Patrize (6) in die Matrize (3) die Form 
geschlossen und der Formraum (11) mit dem Kunststoff 
vollständig gefüllt wird. Nach seinem Abkühlen und Ver­
festigen wird der Kunststoff dann als Formteil (10) aus 
der Form ausgebracht. Dabei können die auf Verarbeitungs­
temperatur gebrachten Plattenzuschnitte vor ihrem Ein­
bringen in die Matrize (3) auch zu einem Kunststoffstück 
(7) größerer Dicke ein- oder mehrfach gefaltet und/oder 
eingerollt werden.  
     Das Verfahren eignet sich speziell auch zum Herstellen 
von Skischuh-Außenschalen.
Patent EP-0339645-A3 (EP)
Title: Device for reading bar codes on photographic film
IPC: G03B27/46
Filed: 1989-04-27
Abstract: A device for reading bar codes (18A) affixed in a 
predetermined order on an elongated photographic film (18). 
The bar codes (18A) are provided at the same positions relative to a 
plurality of image frames (54) that are recorded in the longitudinal 
direction of the photographic film as the photographic film is 
being conveyed in the longitudinal direction. The device 
includes a plurality of symbol reading units (38,39) disposed parallel to 
the direction in which the photographic film (18) is being conveyed for 
reading symbols. The results read by the plurality of symbol reading 
units (38,39) are compared with each other, and a determination is 
made as to whether or not the read symbol is a bar code (18A) on the 
basis of the comparison results. In consequence, it is possible 
to prevent erroneous detection of bar codes.
Patent EP-0354335-A3 (EP)
IPC: E21D9/087
Filed: 1989-06-29
Abstract: Beim Tunnelvortrieb mit Vortriebsschilden entstehen Reaktions­
kräfte, die in der Regel auf die Stirnfläche der Tunnelauskleidung 
abgeleitet werden. Bei Ortbetonauskleidung des Tunnels ist die 
Schildmantelreibung und Pressung des frisch eingebrachten Betons 
auf die Stirnschalung (4) nicht ausreichend, um die anfallenden 
Reaktionskräfte aufzunehmen, sie werden deshalb über die Innen­
schalung (7) in den schon erhärteten Beton im rückwärtigen Bereich 
der Schalung eingeleitet. Zum unbehinderten Umsetzen der Scha­
lungsringe (8) mit Hilfe des Erektors (18) über dem Fahrträger (19) 
nach Beendigung eines Schalungsabschnitts muß der Raum innerhalb 
der Innenschalung (7) frei bleiben. Deshalb werden während des 
Umsetzens eines Schalungsringes (10) vom Ende an den Anfang des 
durch die Innenschalung (7) geschalten Bereichs die Reaktionskräfte 
des Schildes (1) mittels längenverstellbarer Abstützungen (16) im 
Schildschwanz (15) über die nahe der Stirnfläche (11) auf der 
Außenfläche des vordersten Schalungsringes (9) angeordnete 
Knaggen (17) in die Schalung eingeleitet.
Patent EP-0355665-A3 (EP)
Title: Block-copolymerized-rubber-modified styrene copolymers
IPC: C08F279/04
Filed: 1989-08-15
Abstract: The present invention relates to rubber-modified styrene 
copolymer that exhibits excellent rigidity, impact strength, 
external appearance and fluidity, while retaining rigidity, 
impact properties and external appearance, and when prepared by 
copolymerizing a maleimide monomer, has high heat resistance and 
therefore is suitable for materials for components of electric 
equipments, electronic equipments, automobiles and business 
machines.
Patent EP-0355851-A3 (EP)
Title: Dynamic ram for storing video frame
IPC: H04N5/907
Filed: 1989-08-25
Abstract: A dynamic RAM for storing video frame comprises 
a first memory cell array (20₁) for storing an odd field 
of the video frame, a second memory cell array (20₂) for 
storing an even field of the video frame, a circuit (2, 
4, 5, 22, 24 and 25) for receiving address signals and 
accessing a memory cell specified by the address signals 
in one of the first and second memory cell arrays, and a 
circuit (25, 23₁ and 23₂) for executing precharge of the 
other one of the first and second memory cell arrays 
which does not contain the memory cell specified by the 
adress signals. When a memory cell in one of the first 
and second memory cell arrays is being accessed, 
precharge is executed in the other array. Then when a 
subsequent memory cell is accessed, the access can be 
immediately executed because the precharge of the cell 
has already been finished.
Patent EP-0360074-A3 (EP)
IPC: C08F279/04
Filed: 1989-09-07
Abstract: Pfropfpolymerisate aus einem teilchenförmigen, wenig­
stens partiell vernetzten Dienkautschuk (Pfropfgrund­
lage) und einem in Gegenwart des Dienkautschuks poly­
merisierten Styrol/Acrylnitrilgemisch, worin 
   1. die mittleren Durchmesser der Dienkautschukteilchen 
50 bis 600 nm betragen    2. der Dienkautschuk Polybutadien ist, das bis zu 2 
Gew.-% eines mehrfunktionellen vernetzenden Mono­
meren einpolymerisiert enthalten kann    3. das Styrol/Acrylnitrilgemisch 0 bis 30 Gew.-% 
Acrylnitril enthält    4. die Pfropfausbeute der Pfropfpolymerisation min­
destens 65 % ist    5. der Gesamtkautschukgehalt X der Pfropfpolymerisa­
tion in Gew.-% entspricht 
 
    
X = 
  
worin A eine Zahl ist gemäß 57,5 < A < 65 und a den 
Gehalt der Pfropfhülle an Acrylnitril in Gew.-% be­
deutet    
sowie Gemische dieser Pfropfpolymerisate mit Polyvinyl­
chlorid oder Tetraalkylbisphenol A Polycarbonat.
Patent EP-0364773-A3 (EP)
IPC: B23K26/06
Filed: 1989-09-27
Abstract: Es wird ein Faserbündel zur Übertragung von Strahlung hoher Leistung, insbesondere von 
Leistungslasern, beschrieben, bei dem mit minimalem Materialaufwand die Strahlung ohne 
wesentliche Verschlechterung der Strahlqualität (des Strahlproduktes) übertragen werden 
kann. Formeln zur Errechnung der Dicke des Faserbündels, der Numerischen Apertur 
sowie der Kern- und Mantelstärke der Einzelfasern werden angegeben.
Patent EP-0361513-A3 (EP)
IPC: G02B7/28
Filed: 1989-09-29
Abstract: A lens accormmadation device for a camera 
comprising a camera body and a lens unit 
interchangeably mounted to the camera body. The lens 
unit is provided with means for providing data to the 
camera body, the data representing whether a 
photographic lens thereof is accommodatable. The 
device comprises means for driving the photographic 
lens of the lens unit in a direction in which the 
photographic lens is accommodated under a predetermined 
condition in case the photographic lens of the lens 
unit mounted to the camera body is accomodatable one.
Patent EP-0368186-A3 (EP)
Title: A vertically adjustable, retrofittable workstation
IPC: A47B9/06
Filed: 1989-11-06
Abstract: A vertically adjustable, retrofittable work 
station including a first pair of vertically 
oriented, spaced rails (5) having engaging teeth (10) 
protruding therefrom so as to be stationarily mounted 
on an existing wall panel (1) of a conventional work 
station, a second pair of vertically oriented rails 
(6) individually, slidably, interlockingly disposed 
in the first pair of rails (5), a pair of support 
brackets (3) having engaging teeth (17) protruding 
therefrom so as to be individually mounted on the 
second pair of rails (6), a work surfaces (4) 
supported by the support brackets (3), a pair of 
interconnecting channels for respectively 
interconnecting the first and second pairs of rails 
(5,6), and a drive mechanism coupled between the 
interconnecting channels to move the channels toward 
or away from each other so as to attendantly displace 
the work surface (4).
Patent EP-0371336-A3 (EP)
Title: Method and apparatus for electrostatic discharge testing of machines which repetitively execute a stored program with a plurality of program steps
IPC: G06F11/24
Filed: 1989-11-16
Abstract: The present invention employs random electrostatic 
discharges to stress test electrical machinery, 
particularly digital computer systems running 
repetitive diagnostic programs. There is provided an 
interactive capability which allows the user to 
determine test duration either in terms of a fixed time 
or in terms of a specified confidence level, the latter 
case being one in which the system provides the user 
with an indication of the run time required. 
Significant improvements over deterministic "zapping" 
devices result.
Patent EP-0374508-A3 (EP)
Title: Method for preparing polycarbonate-polysiloxane block copolymers
IPC: C08G64/08
Filed: 1989-11-23
Abstract: A method for preparing polycarbonate-polysiloxane 
copolymers by reacting oligomeric carbonate bischloroformate 
and oligomeric bisphenol A-terminated dimethylsiloxane in 
the presence of a polycarbonate formation catalyst, an 
organic liquid, and an aqueous phase containing an alkali 
metal or an alkaline earth metal base.