baber/WOPTO huggingface dataset:
Patent BG-50459-A1 (BG)
Title: Extensometer for high temperature measurements
Inventor: SANKEV ZAKHARI B
IPC: G01B5/30
Filed: 1987-08-28
Abstract: The extensometer is used in measuring equipment, for measuring linear elongations and cross contraction of bodies subjected to stretch. It affords a reliable fixation of the sample body during measurement, retains the precision, while at the same time measures the temperature at which the test has been conducted. The extensometer comprises a body (13), with two tensiometric measurement beams (8 and 1), for longitudinal and cross deformation respectively. A top (5) and bottom (11) sensor for longitudinal deformation and a sensor (6) for cross deformation are adjustably hinged to the beams. At the top of the upper sensor, a hook fitted to a wedge connection (15), in which two spikes (16) of high rigidity and heat resistance material are fitted. The sensor for cross deformation, ending in a front and hind prismatic edge, is passed coaxially to the longitudinal channel of the top sensor. The hind edge is hinged to a prismatic bed, formed in the beam for cross deformation, and connected to the beam for longitudinal deformation with a strip (2). At the end of the bottom sensor, a V-shaped bracket (19) is fitted with a wedge connection (21), at the shoulders of which two other spikes (18) are hinged, while, in the longitudinal channel of the same sensor (11), a coaxial, thermal pair (22), the front edge of which is formed as a ram, built out of spherical ribs and ending in a prismatic concave head (9) hinged in the testing body, is made. The hind edge of the thermal pair (22) is hinged through a spring (23) to the bottom sensor (11).
Patent BG-50986-A1 (BG)
Title: Petrol steams catcher
Inventor: ILIEV PETKO B
IPC: B67D7/04
Filed: 1991-03-01
Abstract: This device is used for supplying gasoline storages, reservoirs, etc. It is simple and reliable and it effectively catches and recycles the gasoline vapours back to the supplying reservoir. The device contains an injector (4), in which there is a transverse (6) and a longitudinal (7) aperture, a piston rod (8), an injection space (9), a second aperture (10) and a valve (11).
Patent WO-0161993-A1 (WO)
Title: Attenuation de bruit pour signaux video
Inventor: WARD RABAB K
IPC: H04N5/21
Filed: 2000-02-17
Abstract: L'invention concerne un procédé d'atténuation de bruit pour signaux vidéo qui consiste à traiter les pixels d'une trame de traitement d'un signal vidéo en conjonction avec un nombre choisi de trames traitées préalablement pour déterminer les valeurs pour les pixels cibles dans la trame de traitement, et ce par l'application d'un détecteur de mouvement temporel pour déterminer si un pixel cible a un statut de repos ou de mouvement et pour continuer le traitement des pixels ayant un statut de mouvement au stade de reconnaissance des impulsions afin de déterminer ultérieurement si le pixel doit être classé comme possédant un statut de repos ou de mouvement. Les pixels sont ensuite vérifiés à un stade de détection de mouvement spatial, et ce pour obtenir une valeur d'index de mouvement pour les pixels; cette valeur d'index de mouvement est utilisée dans un filtre adaptatif temporel de mouvement pour définir la valeur de pixel du pixel de repos. La valeur d'index de mouvement des pixels est utilisée pour fixer un seuil dynamique dans un filtre spatial actif de mouvement détaillé afin de définir la valeur de pixels pour les pixels de mouvement. Le système peut être intégré à un boîtier de convertisseur pour convertir les signaux numériques en signaux analogiques à des fins d'utilisation conjointe avec les services de télévision analogique utilisant des signaux numériques.
Patent WO-0116399-A1 (WO)
Title: Commande du differentiel de pression dans une cellule electrolytique
Inventor: FAIRLIE MATTHEW J
IPC: C25B1/08
Filed: 2000-05-03
Abstract: L'invention concerne un procédé amélioré de production d'hydrogène à partir d'une cellule électrolytique ayant une solution d'anolyte présentant un niveau de liquide anolyte; une solution de catolyte présentant un niveau de liquide catolyte; de production d'oxygène à une pression d'oxygène supérieure à celle du niveau d'anolyte; de production d'hydrogène à une pression d'hydrogène supérieure à celle du niveau de catolyte; l'amélioration consistant à détecter au moins un des niveaux de liquide anolyte et catolyte sous la forme de données de niveau d'anolyte et de niveau de catolyte; à introduire les données de niveaux dans un moyen de traitement central; à déterminer le différentiel de pression entre les niveaux à partir des données de niveaux et des données d'ajustement de pression par le moyen de traitement central; et à fournir les données d'ajustement au moyen de commande de pression pour maintenir le différentiel de pression à l'intérieur d'une gamme sélectionnée. Le procédé offre une méthode de commande à faible coût du différentiel de pression à l'intérieur de 2cm WC d'une valeur de consigne.
Patent CA-2000264-A1 (CA)
Inventor: BEUTLER SCOTT D
IPC: F16C11/06
Filed: 1989-10-06
Abstract: A multipurpose hinge apparatus for a foldable telephone is disclosed. The flip element is held in the closed and open positions by an enclosed cam element which follows recesses in one shaft securing the hinge elements. The hookswitch is activated by another enclosed cam which follows a recess in a second shaft.
Patent CA-2000515-A1 (CA)
Title: Recovery of alumina from bauxite
Inventor: MOODY GILLIAN M
IPC: C01F7/47
Filed: 1989-10-12
Abstract: Red mud in Bayer process liquors are flocculated using dextran and synthetic anionic polymer in the same stage, usually added separately to the liquor. The liquor may be the primary settler slurry, the secondary clarification liquor or one or more of the red mud washing stages. The process is of particular advantage where the liquors are high in carbonate content and/or total alkalinity.
Patent CA-2001233-A1 (CA)
Title: Process for producing silicon carbide whiskers
Inventor: HO PHILLMAN N
IPC: C30B29/36
Filed: 1989-10-23
Abstract: PROCESS FOR PRODUCING SILICON CARBIDE WHISKERS    ABSTRACT OF THE DISCLOSURE         A process for producing silicon carbide whiskers in which a source of silica is mixed with a residual oil or crude petroleum and the resultant mixture is heated in a substantially nonoxidizing atmosphere at temperatures suf-ficiently high to carbonize the residual oil or crude petro-leum, thereby forming an intimate mixture of carbon and sil-ica.  The intimate mixture is then heated in a nonoxidizing atmosphere in the presence of a seeding component comprising an element selected from the group consisting of boron, the rare earths, Group IA, Group IB, Group VB, Group VIB, Group VIIB and Group VIII of the Periodic Table of Elements at tem-peratures sufficiently high to induce the reaction between carbon and silica to form silicon carbide.  The resultant silicon carbide product will contain a relatively high con-centration of silicon carbide whiskers.
Patent CA-2002567-A1 (CA)
Title: Radar apparatus and side-lobe suppression unit suitable for application in such a radar apparatus
Inventor: GELLEKINK BERNARD
IPC: G01S7/28
Filed: 1989-11-09
Abstract: ABSTRACT            The invention relates to a radar apparatus provided with a main directional antenna (1), a first coherent receiver (2) connected to the directional antenna for obtaining first receiving signals, an MTI unit connected to said receiver, and a coherent side-lobe suppression unit (3). This unit (3) is provided with an auxiliary antenna (4), a second receiver (5) connected to the auxiliary antenna (4) for obtaining second receiving signals, and a signal weighting and combination unit (6) connected to the second receiver (5). This unit (6), supplied with the first and second signals, generates an output signal to be supplied to the MTI unit and comprising such a combination of the first and second receiving signals that interference signals received via the side lobes of the main directional antenna and present in the first signals are suppressed in the output signal. The auxiliary antenna (4) has a minimum in sensitivity at least in the direction coinciding with a direction in which the main directional antenna (1) has a maximum in sensitivity. In this way an attenuation of the signals received by the auxiliary antenna in this direction is achieved while maintaining phase correlation. This solves the problem of degraded performance of the MTI unit because less decorrelated clutter signals received by the auxiliary antenna are being injected into the output signal.
Patent CA-2002798-A1 (CA)
Inventor: KOPP CLINTON V
IPC: B01D69/08
Filed: 1989-11-10
Abstract: A method of making a porous polymeric material by heating a mixture of a thermoplastic polymer and a cationic or non-ionic surfactant having a hydrophilic-lipophilic balance range of 4.0 to 6.0 to a temperature and for a time sufficient for the polymer and surfactant to mutually dissolve. The mixture is then cooled to a temperature so that non-equilibrium liquid-liquid phase separation takes place to form a bi-continuous matrix of the polymer and surfactant so that the polymer and surfactant form two intermingled separate phases of large interfacial surface area. The surfactant. is then removed from the polymer.      The porous polymeric material produced by the above method has a lacey or filamentous structure consisting of a plurality of polymer strands connected together at spaced apart locations along each strand.
Patent CA-2002909-A1 (CA)
Title: Projection display using liquid crystal device with reflective color filters
IPC: H04N5/74
Filed: 1989-11-14
Abstract: A color liquid crystal device for use in projected panel displays, VIDs and head-up displays for automotive and other applications is disclosed.  The liquid crystal device employs reflective dielectric color filters at the display  elements,  resulting  in  substantially  decreased power consumption in the liquid crystal device.
Patent CA-2002981-A1 (CA)
IPC: B60B39/00
Filed: 1989-11-15
Abstract: A traction device is formed from three plates of expanded metal with the edges of the expanded metal turned downwardly at the sides to engage the ground.  The plates are connected by 8-shaped hook members which allow the  device  to  articulate  or  to  fold in a way which prevents it from being thrown out from under the tire.          The front edge of the front one of the plates extends forwardly of the side edges to define a tongue which can be tucked under the tire.
Patent CA-2003373-A1 (CA)
Title: Envelope flap profiling apparatus
Inventor: TOLMIE ROBERT J JR
IPC: B43M5/04
Filed: 1989-11-20
Abstract: Apparatus and method for mapping the profile of an en-velope flap using an array of sensors of the optical reflective type in which certain optical emitters and certain optical detec-tors are activated in a sequence to accurately detect and record multiple edge points on a moving flap.
Patent CA-2005713-A1 (CA)
Title: Self oscillating power stage for inverted rectifier power supply
Inventor: FLACHENECKER GERHARD
IPC: H02M3/338
Filed: 1989-12-15
Abstract: A d.c.-to-d.c. converter is equipped with a switching regulator in which the energy storage, instead of being a storage choke, is a series-resonant circuit, the input side of which is switched alternately between two different voltages, one of which may be ground potential. The switching is performed by an electronically controlled switch. A current converter is interposed in series between a series-resonant circuit and a full-wave rectifier which charges a capacitor connected across the load circuit. The current converter has an output providing an alternating voltage in phase with the current in the series circuit. After simple processing this alternating voltage is fed back to control the electronic switch, but it is first passed through a correlation circuit in which a regulating voltage at times causes the feedback to be interrupted. The regulating voltage is typically a binary error signal derived by comparison of the output voltage with a reference voltage. The advantage of this regulator is that the switching times of the electronic switch may coincide with the null transitions of the current of the series-resonant circuit, thus providing high efficiency. The converter contains an inverted rectifier power supply which is also usable for other purposes, e.g. as a high frequency generator for a high frequency surgical apparatus. This power supply comprises the series resonant circuit, phase detector means and feedback means for applying switching pulse flanks to the electronic switch. Excitation of oscillation in the inverted rectifier is produced which occurs as accurately as possible at the frequency of resonance of the series resonant circuit. A regulating voltage only blocks or passes the output voltage of a pulse shaping means contained in the phase detector means to input stages of the electronic switch at such times, at which the current in the series resonant circuit is zero or at least as far as possible close to zero.
Patent CA-2007160-A1 (CA)
Inventor: GILLBERG-LAFORCE GUNILLA E
IPC: B29C55/02
Filed: 1990-01-04
Abstract: The   process   for   forming   a   microporous    polymeric semi-crystalline film, involving  the steps  of cold  compressive extruding a precursor film, preferably  in a biaxial fashion,  so as to compress the film by a factor  of about 2 to 1 to about  10 to 1, stretching the film  by about  100 to  about 500  percent, preferably in  a  biaxial  fashion,  and  heat  annealing  either before, during;  or preferably  after the  stretching step  at  a temperature up to the alpha transition temperature of the polymer for a time  sufficient to maintain  the microporous character  of the final film.
Patent CA-2007488-A1 (CA)
IPC: D04H1/485
Filed: 1990-01-10
Abstract: A method for producing a nonwoven fibrous, flexible panel having a textured outer surface, including the steps:  of providing a needled web comprised of interengaged first fibers and second thermoplastic fibers; needlepunching the web to produce the textured outer surface; and passing a fluid, at a temperature sufficient to melt at least a portion of the second thermoplastic fibers, through the web in a direction from the textured outer surface to produce a plurality of weld joints of the melted second thermoplastic fibers, the textured outer surface thereafter being substantially free of the second thermoplastic fibers.  A nonwoven fibrous panel produced by the methods characterized herein is also described.
Patent CA-2007850-A1 (CA)
Title: Pressure washer with spring-less outlet to inlet bypass
Inventor: PAIGE CLIVE R
IPC: B08B3/02
Filed: 1990-01-16
Abstract: SV-247 (CIP) (35-PRESSURE WASHER WITH SPRING-LESS OUTLET TO INLET BYPASS            ABSTRACT OF THE DISCLOSURE            A pressure washer for delivering a liquid under high pressure has an inlet conduit connected to a liquid supply and an outlet conduit coupled to a spray nozzle which can be operated to control the delivery of liquid through the spray nozzle.  Liquid, e.g., water, is pumped from the inlet to the outlet conduit, elevating its pressure significantly.  A bypass conduit enables recirculation of the liquid from the outlet to the inlet conduit.  A bypass system, disposed between the outlet conduit and the bypass conduit, includes a shuttle valve which moves between first and second positions at which it respectively blocks or opens the liquid path from the outlet conduit to the bypass conduit.  The shuttle is such that, when the liquid pressure on the side of the shuttle facing the spray nozzle is approximately equal to or greater than the liquid pressure in the outlet conduit, the shuttle moves to a position which unblocks the bypass conduit, approximately equalizing the pressure across the shuttle and protecting the washer's components and enhancing its operability.  A nozzle seal arrangement in the pressure washer's pump comprises a pair of seals between each piston and cylinder wall of the pump.  One of the seals pivots in response to side to side wobbling of the piston while maintaining proper sealing conditions.
Patent CA-2008867-A1 (CA)
Inventor: TERHUNE MIKE
IPC: F25C3/04
Filed: 1990-01-30
Abstract: SNOW GUN                            ABSTRACT    A snow gun for making snow by atomizing water and projecting the atomized water by compressed air into an atmosphere having an ambient temperature below about 32 degrees F has a one piece body member with a first water opening through one side and ending within the body member. A pair of second water openings extend through  the  opposite  side  of  the  body  member  and  are  in communication with the first water opening. Water outlet ports extend from the pair of second water openings and at an angle and through the front of the body member.  An air opening extends through one side of the body member and terminates within the body member. Air outlet ports extend from the air opening through the front of the body member adjacent and between the water outlet ports. A pattern plate is attached to the front of the body member and has a slot in communication with the air and water outlet ports. Clean out plugs close the pair of second water openings at the side of the body member. Water is introduced to the body member at the first water opening and leaves the body member at the water outlet ports. Compressed air is introduced to the body member and leaves the body member at the air outlet ports. The compressed air atomizes the water and projects it through the pattern plate into the atmosphere to form snow.
Patent CA-2011941-A1 (CA)
Title: Ring laser gyroscope frames and method for making
Inventor: TAYLOR MARK P
IPC: C03C10/02
Filed: 1990-03-12
Abstract: Abstract of the Disclosure This invention provides a method for forming ring laser gyroscope frames without extensive machining.  Parts of necessary configurations for such frames are so fashioned that they can be sealed together into a unit.  Those parts are prepared from very low expansion glass-ceramics of particular compositions and are sealed together with low expansion, thermally devitrifiable sealing glasses, also of particular compositions.
Patent CA-2014062-A1 (CA)
Title: Pyridine derivatives
Inventor: CLIFFE IAN A
IPC: C07D221/04
Filed: 1990-04-06
Abstract: Pyridine derivatives of formula (see formula  I) their heteroaromatic N-oxides and their pharmaceutically acceptable acid addition salts are disclosed. In the formula z is 0, 1 and 2 and R,R1,R2 and R2 have specified meanings. The compounds exhibit activity as 5-HT1A agonists, antagonists or partial agonists and are useful for the treatment of CNS disorders eg anxiety, as antihypertensives and in treating anorexia.
Patent CA-2015550-A1 (CA)
Title: High molecular weight dispersant additives
Inventor: EMERT JACOB
IPC: C09K23/22
Filed: 1990-04-26
Abstract: ABSTRACT OF THE DISCLOSURE               The present invention is directed to improved oil soluble  dispersant materials which comprise members selected from the group consisting of oil soluble salts, amides, imides, oxazolines, or mixtures thereof, of polyolefin-substituted mono and dicarboxylic acids or their anhydrides covered as per claim 1 wherein the polyolefin is characterized by number average molecular weight of from about 1,500 to 2,500 and a molecular weight distribution of less than about 3.0,  and wherein the dispersant additive contains within its structure an average of from 0.7 to 1.3 mono- or dicarboxylic acid producing moieties  (preferably acid or anhydride moieties)  covered as per claim 1 per polyolefin molecule,  and wherein the dispersant material contains  from 0.5 to 4 equivalents of secondary amine groups per equivalent of the mono- or dicarboxylic acid producing moieties per molecule, with the proviso that the dispersant material is further characterized by a Z factor of from 4,000 to 6,000, wherein the Z factor is determined by the expression:                        wherein [N] is the total nitrogen content of the dispersant material  expressed  in wt% and ?n is the polyolefin number average molecular weight.
Patent CA-2016931-A1 (CA)
Title: Process for the preparation of ethylene (co) polymers
Inventor: LUKER HARTMUT
IPC: C08F10/02
Filed: 1990-05-16
Abstract: A catalyst which consists of an aluminumtrialkyl and the entire product from the reaction of a ground magnesium alcoholate with a tetravalent titanium compound and a halogen-containing organoaluminum compound its used for the homopolymerization of ethylene or the copolymeriza-tion of ethylene with other 1-olefins. A polymer of coarse particle size and high bulk density is obtained.
Patent CA-2018183-A1 (CA)
Title: Irrigation nozzle, particularly for large - diameter pipes
Inventor: ROMAN GIANFRANCO
IPC: B05B1/12
Filed: 1990-06-04
Abstract: "Irrigation nozzle, particularly for large-diameter pipes".                        * * * * * A B S T R A C T    The nozzle comprises first means for the creation of a main jet having variable length and conformation and second means for the creation of a plurality of secondary jets, at reduced pressure, which surround the main jet.  The first means comprise an internal tubular casing which can be supplied with a delivery liquid at one extremity and provided with radial openings for the outflow of the liquid at the other extremity and an external sleeve which can be screwed on and unscrewed from the internal casing to open and closed a central passage for the outflow of the liquid.  The second means comprise a terminal wall of the sleeve provided with a plurality of circumferentially spaced holes over which there is rotatably superimposed a cap provided with a similar plurality of circumferentially spaced holes, which can be aligned or otherwise with the holes of the terminal wall of the sleeve for their opening or closing in relation to the angular position of the cap.
Patent CA-2019042-A1 (CA)
Title: Pallet construction
Inventor: LYNCH TERRY
IPC: B65D19/32
Filed: 1990-06-14
Abstract: ABSTRACT OF THE DISCLOSURE     A pallet for use in the shipment and storage of merchandise includes a platform panel for supporting material made from two parallel spaced-apart sheets and an interposed compression resistant core of lightweight material securing the sheets together. A number of leg members support the platform panel and are distributed in rows on the lower surface thereof to form passageways for the forks of a lift truck to be entered between the leg members.  Elongate runners or a unitary bottom panel connect together the leg members at the bottom ends thereof. The preferred leg members are steel cylinders lined with high compressive strength cardboard cylinders. In an alternate embodiment, the core between the sheets of the upper panel comprises high compressive strength cardboard rings arranged side-by-side each other.  In one preferred embodiment having metal sheets, the core comprises high compressive strength metal honeycomb material.
Patent CA-2022221-A1 (CA)
Title: N-n'-disubstituted and n,n,n'-or n,n',n'-trisubstituted thioureas
Inventor: DESCHLER ULRICH
IPC: C07F7/10
Filed: 1990-07-30
Abstract: The invention provides N,N'-disubstituted and N,N,N'- or N, N',N'-trisubstituted thioureas with additional organyloxysilyl and tertiary amine functions, and a process for their production, of the general formula (see formula I) in which: b is 0, 1 or 2;      R is alkyl with 1 to 6 carbon atoms, cycloalkyl with 5 to 7 C atoms, aryl or aralkyl;      X is -CH2- when a = 1, 3, 4, 5 or 6; or X is (see formula II) when a = 1;      R1 and R2 are both hydrogen; or R1 is hydrogen and R2 is (see formula III) or R1 is or (see formula IV) (CH2)n-NR3 2 and R2 is hydrogen;      R3 is alkyl with 1 to 3 C atoms; and n is 1 to 6
Patent CA-2023514-A1 (CA)
Title: Multicomponent alloy having one glass transition temperature
Inventor: BREKNER MICHAEL-JOACHIM
IPC: C08L71/00
Filed: 1990-08-17
Abstract: Abstract Milticomponent alloy having one glass transition temperature Alloy of homogeneously mixed polymers, containing (a) at least one polyaryl ether ketone, (b) at least one polymide and (c) at least one polyaryl ester.         The alloys have not only higher glass transition temper-atures but also lower melt viscosities than the polyaryl ether ketones alone.