baber/WOPTO huggingface dataset:
Patent EP-0254349-A3 (EP)
Title: Process for the production of silicon tetrafluoride
IPC: C01B33/107
Filed: 1987-07-08
Abstract: A continuous process is disclosed for the production, with a high yield, of high purity silicon tetrafluoride, by starting from an aqueous solution of fluosilicic acid, which comprises:   a) the reaction of an aqueous solution of fluosilicic acid with concentrated sulphuric acid, carried out with a short residence time and preferably under fluido-dynamic conditions of turbulence, inside a reaction zone; b) the separation of a gaseous stream containing silicon tetrafluoride from a liquid stream of aqueous sulphuric acid, carried out inside a separation zone, directly connected with the reaction zone; c) the washing, with concentrated and cold sulphuric acid, of said gaseous stream, carried out inside a washing zone, for the purpose of separating a gaseous stream of purified silicon tetrafluoride; and, possibly d) the further purification of said gaseous stream of purified silicon tetrafluoride, by means of techniques of adsorption on an adsorbent solid material. o
Patent EP-0267635-A3 (EP)
Title: Display card for numerical information
IPC: G09F1/02
Filed: 1987-10-07
Abstract: Display card for numerical information with at least a base surface of background colour and at the front thereof, in mirror image, one or more numerical markings consisting of seven segments of another colour, which markings each essentially have the form of an eight. A layer of clear transparent material, which can be written on, extends at the front on top of the numerical markings and the base surface so that any desired number can be displayed by covering particular segments of the numerical markings by means of ink of the background colour. The ink is of a composition which is removable so that any numerical display can be altered. Alongside the base surface with numerical markings, other surfaces with text and/or symbols may be vided between the back surface and the layer which can be written on.
Patent EP-0239237-A3 (EP)
Title: Simplified universal drawer guiding system
IPC: A47B88/14
Filed: 1987-02-23
Abstract: The drawer mounting and guiding system includes only two metal tracks, one located on each side of the drawer and secured to the cabinet in the space between the side of the drawer and the cabinet wall. Rollers are secured to the rear of the drawer using a universal bracket design which will fit on both the left and the right-hand rear corners of the drawer, and either at the top or the bottom of the drawer. Two more rollers are mounted on the cabinet adjacent the front face of the cabinet and under the edges of the drawer. These last mentioned rollers are normally of relatively small vertical extent so that extra height is not required between adjacent drawers.
Patent EP-0252738-A3 (EP)
Title: Foam meter
IPC: G01N13/00
Filed: 1987-07-09
Abstract: This invention relates to a foam meter which has a 
thermostatically controlled column open at one end with a mesh at 
the other end. The mesh is of a uniform pore size and gas is 
sparged through the pores onto a liquid placed on the mesh whereby 
the liquid foams. The volume of foam generated is measured by 
graduations on the column. The meter is used for measuring the 
foamability of crude oil and to determine the performance of 
antifoams used during crude oil recovery.
Patent EP-0257867-A3 (EP)
Title: Vertical tube water heater
IPC: F24H1/28
Filed: 1987-08-05
Abstract: A vertical tube water heater comprising a water tank (22) within which are located a plurality of tubes (25) and a vertical combustion tube (26) provided at its upper end with a burner (29), the bottom ends of said tubes (25) and combustion tube (26) being in communication with a chamber (28) located at the bottom of the tank (22) and the upper ends of the tubes (25) being in communication with a header chamber (27) located at the upper end of the tank (22) and which is in communication with an exhaust duct (32,33), the arrangement being such that when the water heater is operating at low temperature settings any condensation formed within the tubes (25,26) is evaporated or drained and can not reach the burner (29) to extinguish it or its pilot light.
Patent EP-0269413-A3 (EP)
IPC: H05B6/06
Filed: 1987-11-24
Abstract: In an induction heating circuit for a cooking 
appliance, a pan heating coil (L2) is powered at values 
determined by the state of conduction of a gate turn-off 
thyristor (VT1). To reduce the amplitude of current flow 
through the thyristor at turn-on, a circuit responsive to 
the voltage across a capacitor (CR) that resonates the pan 
coil (L2) is employed. The circuit is coupled to the 
resonant circuit comprising pan coil (L2) and capacitor 
(CR) by a saturating transformer (T1) and senses the 
instant when the voltage across capacitor (CR) reaches 
a minimum and this information is used to turn-on the 
thyristor (VT1).
Patent EP-0273775-A3 (EP)
IPC: C11D3/50
Filed: 1987-12-31
Abstract: Protected additives for use in cleaning compositions such as 
liquid laundry detergents comprises an optical brightener, bleach, 
photoactive bleach, perfume, blueing agent or dye dispersed in, or 
coated with, a hydrophobic substance such as silicone oil or a 
hydrocarbon, which is insoluble in concentrated liquid detergent but 
which is disrupted under normal cleaning conditions.
Patent EP-0281850-A3 (EP)
Title: Ratio control technique for continuously variable transmission
IPC: B60W30/19
Filed: 1988-02-24
Abstract: A ratio control system for use in a continuously variable transmission is disclosed in conjunction with an improved technique for operation thereof. Individual gain schedules provide proportional gain in response to a selected one of a number of modes dependent upon clutch input speed, transmission belt ratio, or engine set point. Engine speed set point is determined as a function of a set point schedule (114) in conjunction with a limiter (116) and a filter (120) to provide a gradual response to rapid changes in a throttle input or driver demand signal and vehicle speed. The error signal generated as an output of any of the proportional gain loops is integrated (154) and combined (in 104) with a null signal (N0) to provide a signal (e4) to generate a duty cycle for a pulse width modulation controlled electrohydraulic control valve to control the pressure to the primary sheave in a continuously variable transmission system for modifying the belt ratio. The integration function (154) may be used or bypassed at appropriate times to account for physical limitations in the possible range for the belt ratio. Full low and full overdrive conditions are provided through an open loop gain corresponding to maximum and minimum duty cycle signals.
Patent EP-0284787-A3 (EP)
Title: Displacement and/or position indicator
IPC: G06K11/06
Filed: 1988-02-27
Abstract: In a displacement and/or position indicator, it is proposed, in order to achieve an inexpensive, compact and soiling-resistant construction, that a conductor foil (5), which can be elastically resiliently pressed against the resistance track (4), is arranged, held at a distance from the latter above the resistance track, and that the slider (8) is displaceably arranged above the conductor foil (5), pressing the latter against the resistance track (4), the conductor foil preferably being electrically connected to a conductor track (2) extending in parallel to the resistance track (4) at a distance from the latter and electrically isolated from the latter. 
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Patent EP-0286976-A3 (EP)
IPC: B02C17/16
Filed: 1988-04-07
Abstract: A vertical microsphere mill for dispersing a pigment in 
a fluid medium, wherein a rotor (31) provided with impellers 
(41) with different diameter and thickness interspaced by 
shaped spacers (42) also with different diameter and 
thickness, is inserted in a truncated-cone chamber (12) 
defined in a casing (2) wherein there is contained a 
grinding means, for example microspheres or sand, and 
wherein said chamber is continuously fed with a mixture of 
pigment and of fluid medium.
Patent EP-0290790-A3 (EP)
IPC: H03H17/00
Filed: 1988-04-09
Abstract: Die Erfindung betrifft eine Filterbank zum Frequenzdemultiplexen bzw. 
-multiplexen von L Kanalsignalen, für L > 0 und L eine natürliche Zahl, 
bestehend aus L Transversalfiltern (nichtrekursive Filter, Filter mit 
endlich langer Dauer der Impulsantwort (FIR)), mit komplexwertigen Koef­
fizienten, für reellwertige Eingangssignale und mit komplexwertigen Aus­
gangssignalen bzw. umgekehrt, mit am Ausgang um den Faktor M reduzierter 
bzw. erhöhter Abtastrate und ist dadurch gekennzeichnet, daß mindestens 
eines der L Filter durch eine Kaskadierung von mindestens 2 Filtern mit 
jeweils komplexwertigen Koeffizienten realisiert ist, daß bei jedem die­
ser Filter die Abtastrate um den Faktor M q  > 1 reduziert bzw. erhöht 
ist, mit 
  
daß die Eingangsfilter der Kaskade jeweils ein 
reellwertiges Eingangssignal aufnehmen und ein komplexes Ausgangssignal 
abgeben und die anderen Filter der Kaskade jeweils ein komplexwertiges 
Eingangssignal aufnehmen und ein komplexwertiges Ausgangssignal abgeben 
(Figur 3) bzw. daß die ersten Q-1 Filter der Kaskade jeweils ein kom­
plexertiges Eingangssignal aufnehmen und ein komplexwertiges Ausgangs­
signal abgeben und die Ausgangsfilter der Kaskade jeweils ein komplex­
wertiges Eingangssignal aufnehmen und ein reellwertiges Ausgangssignal 
abgeben.
Patent EP-0301532-A3 (EP)
Title: Solvent free acrylic acid type thickening agents and a method of making same
IPC: C08F120/04
Filed: 1988-07-29
Abstract: A copolymer having no (zero) organic solvent 
is suitable for use as a thickening agent comprising 
an acrylic acid polymer crosslinked with from about 
0.1 to about 6% by weight, based upon the weight of 
the acrylic acid polymer, of a copolymer, the 
copolymer having at least two terminal allyl groups. 
The copolymer at a 0.2 weight percent level dispersed 
in distilled water has a mucilage viscosity of at 
least 1000 cps. A method for making a solvent-free 
copolymer suitable as a thickening agent is also 
disclosed which comprises the steps of: 
   a) charging into a reactor acrylic acid 
monomer, a comonomer, carbon dioxide, and a chemical 
initiator;    b) polymerizing the acrylic acid monomer 
with the comonomer at a preselected temperature and 
pressure to produce a fine, fluffy acrylic acid 
copolymer; and    c) separating totally and completely the 
acrylic acid copolymer from the carbon dioxide thus 
producing an organic solvent-free acrylic acid 
polymer. The amount of chemical initiator employed 
in the method ranges from about 0.25% to about 4% by 
weight based upon the weight of the acrylic acid.
Patent EP-0344357-A3 (EP)
Title: Closure for a bottle-type container, especially one for a rinsing liquid or the like
IPC: B65D1/02
Filed: 1988-08-12
Abstract: In a closure for a bottle-type container, in particular for rinsing liquid or the like, with a formed-on closure cap comprising a protecting cap which can be screwed onto a thread on the container neck over the closure cap, the protecting cap being connected releasably to an axially fixed original sealing ring by means of corresponding projections and undercuts, and, after release of the protecting cap from the original sealing ring, the latter being pressable against the closure cap by means of further screwing, so that the closure cap is torn off from the container along a predetermined breaking place, it is envisaged, in order to achieve a hermetic sterile seal on the one hand and easy handling on opening on the other hand, that the original sealing ring (16) has on its upper edge (18) a larger free diameter (D2) than the protecting cap (15) on its underside, tear-off connecting tabs being arranged between original sealing ring (16) and protecting cap (15), and that, below the lower edge (17) of the protecting cap (15), an annular shoulder (5) with a conical abutting surface (6) is arranged. <IMAGE>
Patent EP-0291251-A3 (EP)
Title: Liquid dispenser
IPC: B67D3/02
Filed: 1988-05-06
Abstract: A liquid dispenser (1) for dispensing metered aliquots of a liquid is provided, which dispenser (1) comprises a chamber (2) having an inlet bore (7) for liquid and an outlet bore (8) for liquid, a valve (3) in the chamber (2) for controlling dispense of liquid from the dispenser (1), and valve operating means (4), said valve (3) having first and second valve stems (9,10) for reception respectively within said inlet bore (7) and within said outlet bore (8), said first valve stem (9) being provided with sealing means (16) for sealing said inlet bore (7), and first, second and third resilient sealing means (22,23,24) being provided for sealing said outlet bore, the arrangement being such that during movement of the valve (3) from a position in which it entirely seals the outlet bore (8) to a position in which liquid within the chamber (2) is free to flow through the outlet bore, (7) the inlet bore is sealed before a said flow of liquid can occur.
Patent EP-0292189-A3 (EP)
Title: Updating cannonic signed digit filter coefficients updating cannonic signed digit filter coefficients
IPC: H03H17/02
Filed: 1988-05-11
Abstract: A method of selectively incrementing and decrementing the decimal values of digital filter tap coefficients is disclosed. Each tap coefficient is represented by a plurality of cannonic signed digit (CSD) encoded "nibbles". The combined CSD-encoded values of the individual nibbles bear no direct relationship to the decimal-valued tap coefficient, the range of each nibble is restricted to allow such a direction relationship. Each CSD-encoded value is adjusted by incrementing, decrementing or placement at an endpoint of its range and direction reversed, whereby the resulting decimal value will be incremented or decremented. The sign and direction of movement within the range of each nibble is readily ascertained by reference to a set of simple rules.
Patent EP-0293175-A3 (EP)
IPC: H05K13/04
Filed: 1988-05-25
Abstract: A parts mounting apparatus includes a rotary-index 
table (60) having vacuum suction devices (70) on a 
periphery thereof. A removable suction piece (93) is 
attached to each of the vacuum suction devices so as to 
perform picking and placing operations of parts (1). A 
suction piece stocker (230) is disposed across a 
detaching station (K) and an attaching station (L). A 
detaching device (248) is arranged at the detaching 
station (K), wherein the suction piece is come to be 
detached from the vacuum suction device and held by a 
stocker (230) when the vacuum suction device is lowered 
and then raised. When the vacuum suction device which 
has lost the suction piece is lowered at the attaching 
station, a suction piece is attached to the vacuum 
suction device. When the vacuum suction device is 
raised in that state, the suction piece is pulled out 
from the stocker. Thus, exchanging of suction piece can 
be performed.
Patent EP-0323219-A3 (EP)
Title: Process for preparing heterocyclic copolymers
IPC: C08G18/83
Filed: 1988-12-28
Abstract: Process for preparing a heterocyclic 
copolymer having recurring units [A] and [B] 
  
obtained by hydrolizing reaction products of 
specific diisocyanate compounds with tolidine 
diisocyanate and hydrogen cyanide.  
     The copolymers are excellent in mechanical 
strength, heat resistance and solvent resistance.
Patent EP-0327825-A3 (EP)
Title: Moulding machine
IPC: B22C13/06
Filed: 1989-01-13
Abstract: A moulding machine for the prodn. of sand moulds has a work table which can be swivelled around a vertical axis and carries a moulding box and a pattern plate for the top half and a moulding box and a pattern plate for the bottom half of the mould, on opposite sides. One moulding box is situated in the sand filling station and another in the sand compacting station.
Patent EP-0338507-A3 (EP)
IPC: C07C215/68
Filed: 1989-04-18
Abstract: The present invention relates to an ophthalmic solution for 
intraocular pressure adjustment comprising as an active ingredient 
either a compound of formula I 
   
     wherein each Hal is chlorine or bromine,  
R₁ is hydrogen or hydroxyl,  
R₂ and R₃ are each hydrogen or alkyl, and  
R₄ and R₅ are each hydrogen, lower alkyl, lower alkenyl, 
lower alkinyl, hydroxy-lower alkyl, lower alkoxy-lower alkyl, 
di-lower alkyl-amino-lower alkyl, cycloalkyl, phenyl, 
benzyl or adamantyl; or, together with each other and the 
nitrogen atom to which they are attached, pyrrolidino, lower 
alkyl-pyrrolidino, piperidino, lower alkyl-piperidino, piperazino, 
N′-lower alkyl-piperazino, morpholino, lower alkylmorpholino, 
hexamethyleneimino, lower alkyl-hexamethyleneimino, 
camphidino or lower alkyl-camphidino;  
or a racemic mixture or optically active antipode of a compound 
of formula II 
   
  
     wherein  
R₁ is hydrogen, fluorine, chlorine, bromine, iodine or 
cyano,  
R₂ is fluorine, trifluoromethyl, nitro or cyano, and  
R₃ is alkyl, hydroxyalkyl, cycloalkyl of 3 to 5 carbon 
atoms, 1-(3,4-methylenedioxy-phenyl)-2-propyl or 1-(p-hydroxy-phenyl)-2-propyl;  
or a compound of the formula III 
   
     wherein  
R₁ is hydrogen, halogen or cyano, 
R₂ is fluorine, cyano, trifluoromethyl, nitro or alkyl, 
R₃ is alkoxy, alkenyloxy, aryloxy, aralkoxy or -NR₅R₆, 
where R₅ and R₆ are each hydrogen, alkyl, alkenyl, aryl 
or aralkyl, and  
R₄ is cycloalkyl or alkyl,  
or a non-toxic, pharmacologically acceptable acid addition 
salt thereof.
Patent EP-0342646-A3 (EP)
IPC: D21F11/00
Filed: 1989-05-17
Abstract: Hand or wiper towels are made according to a process which includes the steps of: forming a furnish of cellulosic fibers; depositing the furnish on a traveling foraminous belt , thereby forming a fibrous web on top of the traveling foraminous belt ; subjecting the fibrous web to non-compressive drying to remove the water from the fibrous web; and removing the dried fibrous web from the traveling foraminous belt . These hand towels possess high levels of absorbent capacity, absorbent rate, softness and strength . Embossing of the hand or wiper towels enhances the superior qualities of the towels. In a preferred embodiment of the present invention, the transfer of the fibrous web from a foraminous belt of a higher speed to a foraminous belt of a lower speed produces a towel with enhanced strength and softness.
Patent EP-0383992-A3 (EP)
Title: Transverse connector for spinal column corrective devices
IPC: A61F2/44
Filed: 1989-06-22
Abstract: An apparatus comprising a pair of corrective devices 
for a spinal column. A member is extendable between the 
corrective devices in a direction transverse to the 
longitudinal central axes of the corrective devices. A 
first portion of the member is connected with one of the 
corrective devices and a second portion of the member is 
connected with the other of the corrective devices. The 
locations at which the corrective devices are connected 
with the member may be changed to enable the member to 
interconnect the corrective devices spaced different 
distances apart and at different orientations.
Patent EP-0358966-A3 (EP)
IPC: B25J15/00
Filed: 1989-08-16
Abstract: An improved robotic end effector (10) is disclosed. 
The end effector of the present invention possesses a novel 
breakaway clutch (100), which is combined with mechanically 
linked finger joints (72, 74) to significantly reduce control 
complexity while retaining the ability to accomplish 
enveloping grasps. In another embodiment, a finger using 
compliant tendons (320) to accomplish enveloping grasps is 
disclosed. A novel palm/finger configuration which further 
increases the versatility of the disclosed end effector 
without unduly increasing complexity is also disclosed. 
Methods of manipulating an object are also disclosed.
Patent EP-0356853-A3 (EP)
Title: Homogeneous mixture of epoxy resin and carboxyl-containing olefin polymer
IPC: C09D163/00
Filed: 1989-08-19
Abstract: A composition useful in the preparation of low 
gloss coatings is disclosed which consists essentially 
of an unreacted, homogeneous mixture of (A) one or more 
epoxy resins having an average of more than one vicinal 
epoxy group per molecule and (B) one or more polymers 
resulting from polymerizing (1) one or more α-olefins, 
(2) one or more polymerizable ethylenically unsaturated 
acids and (3) optionally one or more polymerizable 
ethylenically unsaturated monomers other than (1) or 
(2).
Patent EP-0360123-A3 (EP)
IPC: G06F12/00
Filed: 1989-09-11
Abstract: A fast access high capacity data storage system includes 
a disk-based storage system employing a plurality of storage 
surfaces (2). Selected storage surfaces of the plurality 
thereof include a plurality of data access heads (4) in data 
communication therewith. Means (6) is provided for allowing 
concurrent data transfers through this plurality of data ac­
cess heads (4). Performance is further improved by monitoring 
frequently accessed data records and transferring them to re­
cording surfaces less frequently in use. Means (48, 49) is al­
so taught for moving the data access heads (4) of the plurali­
ty to other recording surfaces (2) to decrease access bottle-­
necks thereon.
Patent EP-0363913-A3 (EP)
Title: Reusable oxygen inhaler
IPC: A62B21/00
Filed: 1989-10-10
Abstract: An oxygen inhaler in which a chlorate candle (1) is replaceable, so that the oxygen inhaler can be used repeatedly by simply replacing the chlorate candle, and in which the replacement of the chlorate candle can be done easily and accurately without danger. The oxygen inhaler includes an oxygen generating core (10) having a gypsum (7) layer surrounding at least a portion of a side face of the chlorate candle; and water absorptive protection cylinder (9) surrounding a side face of the gypsum layer, having such a shape that a distance (H) between one ends of the chlorate candle and the protection cylinder is different from a distance (L) between another ends of the chlorate candle and the protection cylinder.
Patent EP-0357100-A3 (EP)
IPC: G01R33/50
Filed: 1989-07-11
Abstract: Die Erfindung betrifft ein Kernspintomographieverfahren, 
bei dem zwei schichtselektive Hochfrequenzimpulse die 
Kernmagnetisierung in einer Schicht beeinflussen. Durch 
weitere schichtselektive Hochfrequenzimpulse, die zu der 
genannten Schicht senkrechte Teilschichten anregen, werden 
in dem streifenförmigen Schnittbereich zwischen der 
jeweiligen Teilschicht und der Schicht stimulierte Echo­
signale erzeugt. Die mit den weiteren Hochfrequenzimpulsen 
verknüpften FID-Signale werden durch ein nachgeschaltetes 
magnetisches Gradientenfeld unterdrückt. Damit dieses 
nicht auch die gewünschten stimulierten Echosignale 
dephasiert, wird zwischen dem ersten und dem zweiten Hoch­
frequenzimpuls ein magnetisches Graidentenfeld mit 
gleichem zeitlichen Integral eingeschaltet.
Patent EP-0352034-A3 (EP)
IPC: C07C41/22
Filed: 1989-07-14
Abstract: 2-(difluoromethoxy)-1,2,2,2-tetrafluoroethane (CHF₂OCHFCF₃), a known 
inhalation anaesthetic, is prepared by a synthetic route in which a first 
and novel intermediate:  
p-CH₃C₆H₄CHF₂OCHFCF₃  
is prepared by reacting methyl hemiacetal (CF₃CH(OH)OCH₃) with para-toluene 
sulphonyl chloride in the presence of an organic base such as 
triethylamine at room temperature. The resulting novel tosylate 
intermediate is then converted to a second intermediate CF₃CHFOCH₃ by 
reaction at elevated temperature with a fluorinating agent such as caesium 
fluoride. The second intermediate is converted by known means to 
CHF₂OCHFCF₃ (eg by photochemical chlorination) followed by fluorination of 
the resulting compound with HF in the presence of SbCl₅.