baber/WOPTO huggingface dataset:
Patent CA-2165744-A1 (CA)
Title: Process for continuously providing a scratch resistant finish on polycarbonates
Inventor: BIER PETER
IPC: C08J7/04
Filed: 1995-12-20
Abstract: Process for coating polycarbonate mouldings, characterised in that the surface of a moulding made from a polycarbonate based upon a diphenol of the formula (I)                        (I) in which R1 and R2 mutually independently mean hydrogen, halogen, preferably chlorine or bromine, C1-C3 alkyl, C5-C6 cycloalkyl, C6-C10 aryl, preferably phenyl, and C7-C12 aralkyl, preferably phenyl-C1-C4-alkyl, in particular benzyl, m    means 4 or 5, R3 and R4 individually selectably for each X, mutually independently mean hydrogen or C1-C6 alkyl and X    means carbon, providing that on at least one atom X, R3 and R4 simultaneously mean alkyl, is provided with a coating of silicone lacquers with a viscosity of 5 to 10,000 mPa-s to a thickness of 2 to 200 µm and the lacquers are then cured in conventional devices at temperatures of above 145°C, preferably of above 185°C in particular of above 190°C and in a period of under 20 minutes, preferably of under 10 minutes and in particular of under 6 minutes.
Patent CA-2166528-A1 (CA)
Title: A control arm for use in a vehicle wheel suspension system
Inventor: KELLY DAVID E
IPC: B60G7/00
Filed: 1996-01-03
Abstract: A control arm (30) comprises a first member (32) with a first portion (42) connectable to a vehicle frame (38).          A second portion (56) of the first member (32) is connectable to a steering knuckle (14).  A connecting portion (64) interconnects the first and second portions (42, 56) of the first member (32).  A second member (34) includes a third portion (68) connectable to the vehicle frame (38) and a rod portion (84) extending from the third portion (68).  The rod portion (84) includes a terminal end (86) rigidly connected to the connecting portion (64) of the first member (32) to prevent relative movement between said first and second members.
Patent CA-2167947-A1 (CA)
Title: Downhole milling tool
Inventor: LYNDE GERALD D
IPC: B23B5/16
Filed: 1994-01-21
Abstract: A tool (22) for cutting or milling casing in a well is disclosed. It includes a plurality of blades (36) extending outwardly to a substantially radial position for cutting the walls of casing strings and removing a predetermined length of the casing strings in a cutting action. The blades have cutting elements (66) positioned on leading faces (68) of the blades to engage the casing strings in a cutting action without tripping or removal from the bore hole. The cutting element (66) has surface irregularities (78) to cause the metal chips cut from the casings to break off at short lengths. The cutting element (66) can also have stress relieving grooves (80) to prevent the propagation of a crack across the face of the element.
Patent CA-2168519-A1 (CA)
Title: Single impact rapping hammer system and method for cleaning tube units
Inventor: EISINGER FRANTISEK L
IPC: F23J3/00
Filed: 1996-01-31
Abstract: A rapping hammer system adapted for periodically rapping and cleaning tubes of a heat exchanger unit to remove undesired deposits from outside the tubes, A plurality of rapping hammers are each pivotably attached to a radial arm extending outwardly from and spaced apart along a rotatable shaft. A spring device is attached to each radial arm and arranged to contact the rapping hammer with sufficient force so as to substantially restrain repeated striking movements of the rapping hammer against an impact stem of the heat exchange unit following an initial impact of the hammer, A method is also disclosed for operating the rapping hammer system for periodically rapping and cleaning the outside surface of heat exchanger tubes such as boiler tubes of accumulated ash and soot deposits.
Patent CA-2168738-A1 (CA)
Title: Fused tricyclic heteroaromatic derivatives as dopamine receptor subtype ligands
Inventor: COLLINS IAN JAMES
IPC: C07D405/14
Filed: 1994-09-06
Abstract: A class of fused tricyclic heteroaromatic compounds of formula (I), or a salt thereof or a prodrug thereof containing a fused pyrazole ring are ligands for dopamine receptor subtypes within the body and are therefore of use in the treatment and/or prevention of disorders of the dopamine system, such as schizophrenia.
Patent CA-2169449-A1 (CA)
Title: Secret key exchange
Inventor: LEIGHTON FRANK THOMSON
IPC: H04L9/08
Filed: 1994-08-12
Abstract: The present invention describes a method for enabling users of a cryptosystem to agree on secret keys.  In one embodiment, a trusted agent chooses at least one individual key for each user, with at least a portion of such individual key being secret.  At least some of the individual keys are then stored in physically secure devices, and the pair of users i and j use their individual keys to compute a common secret key.  In another embodiment, each trustee of a group of trustees chooses at least one individual key for each user, with at least some portion of such  individual key being secret.  The keys chosen by a sufficiently small number of such trustees, however, are insufficient  for computing the common secret key of the users.  Other hardware and software key exchange protocols based on these two techniques are also disclosed.
Patent CA-2172108-A1 (CA)
Title: Fiberglass preform compression process
Inventor: HORLING TIMOTHY J
IPC: B29B11/00
Filed: 1996-03-19
Abstract: A method for forming a fiber preform for use in a resin transfer molding process, the method comprising the steps of providing a hollow form having open first and second opposite ends, placing in the form a predetermined amount of fibrous material and binder, closing the first end of the form with an end cap, compressing the fibrous material and binder by inserting a ram into the second end of the form and moving the ram through a predetermined distance, and curing the binder to produce the preform.
Patent CA-2172179-A1 (CA)
Title: Tubular turbine plant
Inventor: SCHWANDA JOSEF
IPC: F03B13/10
Filed: 1996-03-20
Abstract: The combined supporting and guide bearing (10) for a tubular turbine plant has an axial guide bearing, having two bearing-supporting surfaces (20, 21) running in an annular groove (19) of the shaft (4).      The bearing segments (22, 23) are each fastened to the radially inner section of a common supporting beam (24) which is detachably fastened to the bearing support (11) and enters into the said annular groove (19).      A bearing of such a construction is readily accessible, and the segments are easy to adjust and can also be easily exchanged.
Patent CA-2173269-A1 (CA)
Inventor: ETO SHUNJI
IPC: C02F3/20
Filed: 1996-04-02
Abstract: In a polluted water purifying method and apparatus,  a purification treatment tank is filled with massive purifying members in a purifying region, each massive purifying member including plural opening portions having an equivalent diameter of 1 to 5cm which are provided on the surface thereof, and plural interconnecting channels which intercommunicate with one another and provided inside of the members, and each opening portions continuously intercommunicating with at least one of the channels.  Polluted water containing SS,  BOD,  etc.  is supplied through the purifying region of the tank to be brought into contact with the massive purifying members. At the same time,  oxygen-contained gas is jetted as fine bubbles at a predetermined interval from the bottom portion of the purifying region into the polluted water so that the stream of the flowing polluted water flowing in the purifying region, so that the fine bubbles of the oxygen-contained gas are contacted with the polluted water in a substantially perpendicular direction to each other, whereby an aerobic treatment and an anaerobic treatment are rapidly and efficiently performed on the surface of the purifying members and inside of the purifying members respectively.
Patent CA-2174861-A1 (CA)
Inventor: SCHOESS JEFFREY N
IPC: G01N17/02
Filed: 1995-01-13
Abstract: A smart fastener having corrosion detection features. Within the fastener is a corrosion detecting array that receives an electrolyte that corrodes sacrificial materials formed on electrodes of the corrosion detecting array. The materials are the same as those materials which are secured, fastened, or attached by the fastener. There is parallel corrosion of the sacrificial materials and the attached materials since the electrolyte which is channeled via capillary tubes into the corrosion detecting array is the same electrolyte that is in the environment of the fastened materials. Other electrodes sense various properties of the electrolyte. Information sensed by the corrosion sensing electrodes of the array is in the form of very small electrical signals which are amplified and stored in an analog storage memory. A clock and addressing device time stamps and address the signals. An interface circuit enables a user to electronically access corrosion and related signals without removing or in any way dismantling the fastener.
Patent CA-2177818-A1 (CA)
Title: An improved airfoil structure
Inventor: FREY GARY A
IPC: F01D5/14
Filed: 1995-10-24
Abstract: Past airfoil (44) configurations have been used to improve aerodynamic performance and engine (10) efficiencies. The present airfoil (44) configuration fur-ther increases component life and reduces maintenance by reducing internal stress within the airfoil (44) itself. The airfoil (44) includes a chord (62) and a span (60). Each of the chord (62) and the span (60) has a bow (70, 72) being summed to form a generally "C" configura-tion of the airfoll (44). The generally "C" configuration includes a compound bow (70, 72) in which internal stresses resulting from a thermal temperature gradient are reduced. The structural configuration reduces in-ternal stresses resulting from thermal expansion.
Patent CA-2179834-A1 (CA)
Inventor: GILMAN ROBERT REAGAN
IPC: H04M3/42
Filed: 1996-06-25
Abstract: A switching system (100) inserts H.320 multi-media protocol-terminating resources (156) into an existing call dynamically, only when the resources are needed, and also removes the resources from an ongoing call dynamically, when the resources are no longer needed, whereby the switching system can provide call features such as hold, conference, disconnect, drop, andtransfer, to an H.320 multi-media call and can do so spontaneously, whenever desired during the call, without tying up the resources for the duration of the call even when they are not needed. To extend these capabilities to both single-channel and multi-channel multi-media ISDN BRI calls, the switching system associates a plurality of calls that constitute the individual channels of a multi-channel call and treats the associated calls identically and in unison for purposes of insertion and removal of resources and the providing of features.
Patent CA-2179898-A1 (CA)
Inventor: SAHATJIAN RONALD A
IPC: A61F2/958
Filed: 1994-12-16
Abstract: L'invention a pour objet le traitement d'un patient, et plus précisément, le prélèvement d'un échantillon corporel depuis l'intérieur du corps du patient, et la collecte de ce prélèvement à l'extérieur de son corps pour faciliter le traitement. Une sonde d'échantillonnage (2) est prévue sous forme d'un cathéter allongé (4) dont une partie proximale reste à l'extérieur du corps et une partie distale peut être placée à l'intérieur du corps. La partie distale comprend un ballon (8) recouvert de polymère (16), prévu pour recevoir un quantité importante de ce prélèvement.
Patent CA-2180215-A1 (CA)
Inventor: MIZUSHIMA YUTAKA
IPC: A61K38/00
Filed: 1996-06-28
Abstract: A medicament for nasal administration to be used for disease prevention or treatment comprising a vaccine or a pharmacologically active peptide compounded with ion exchange resin powder whose mean particle size is not larger than 200µm is produced.
Patent CA-2180548-A1 (CA)
Inventor: TANABE MASATO
IPC: C07J21/00
Filed: 1995-01-05
Abstract: Nouveaux agents antiandrogènes dont l'un des groupes types présente la formule (I) où R?1¿ à R?10¿, a et b sont définis ici. Préparations pharmaceutiques à base des composés de formule (I) et leur mode d'utilisation en vue du traitement d'états cliniques liés aux androgènes et méthodes et préparations utilisant ces composés comme agents contraceptifs.
Patent CA-2182647-A1 (CA)
Title: Electron-emitting device and electron source and image-forming apparatus using the same as well as method of manufacturing the same
Inventor: SHIBATA MASAAKI
IPC: H01J1/316
Filed: 1996-08-02
Abstract: An electron-emitting device comprises a pair of oppositely disposed device electrodes and an electroconductive film electrically connecting the device electrodes and having an electron-emitting region formed as part thereof.  The electroconductive film is partly or entirely covered by a metal oxide coat containing as principal ingredient with a melting point higher than that of the material of principal ingredient of the electroconductive film.  The electroconductive film has also a deposited layer comprising carbon, a carbon compound or a mixture thereof.
Patent CA-2185913-A1 (CA)
Title: Programmable cable adaptor
Inventor: KREFT KEITH A
IPC: G01R31/00
Filed: 1995-04-07
Abstract: A programmable cable adaptor including a housing containing an internal circuit board having a plurality of conductive traces, an input connector with multiple pins, and an output connector with multiple pins or pin receiving sockets. On the circuit board, there is a card edge receptacle with key-contacting pins, electrically connected to the conductive traces, arrayed along at least one side of the card edge receptacle. A "key" with contacts on both sides, which are coupled to another such contact on the opposite side of the key, is inserted into the card edge receptacle to selectively couple pairs of key-contacting pins.
Patent CA-2186067-A1 (CA)
Title: Fuel Injection System for Combustion-Powered Tool
Inventor: ROBINSON JAMES W
IPC: B25C5/00
Filed: 1996-09-20
Abstract: A fuel system is provided for a combustion-powered tool having a self-contained internal combustion power source with a combustion chamber, and constructed and arranged for driving a drive blade to impact a fastener and drive it into a workpiece. The tool includes a housing having a main chamber enclosing the power source and having a first end adjacent a nosepiece wherein the fasteners are positioned prior to driving, and a second end opposite the first end and adjacent the combustion chamber. A fuel cell chamber is in communication with the main chamber and has a first chamber end corresponding to the first end of the main chamber and a second chamber end corresponding to the second end of the main chamber. A fuel metering valve is disposed in the fuel cell chamber at the first end so that a fuel cell having a fuel outlet end operationally inserted into the fuel cell chamber will engage the valve so that fuel is dispensed into the valve in a location closer to the first chamber end than to the second chamber end.
Patent CA-2186697-A1 (CA)
Title: Method and apparatus used in treatment of melt
Inventor: ENGDAHL HOLGER
IPC: D21C11/12
Filed: 1996-09-27
Abstract: A method of regulating the temperature in a chemical melt dissolving tank, where chemical melt produced in combustion of spent liquor of a cellulose pulp mill is dissolved in liquid, producing green liquor, provides excellent heat economy, while minimizing the amount of liquid needed to dissolve the melt to produce green liquor at a temperature below boiling.  Green liquor produced in the dissolving tank is expanded (and thereby cooled) in a vacuum tank, and at least a significant part of the cooled liquor is returned to the dissolving tank, for regulating the temperature in the tank. The heat energy contained in the generated expansion steam may be used in many different ways, for example, for indirectly heating (e.g. in a heat exchanger acting as a condenser) water or other liquid to a sufficiently high temperature so that the liquid is useful elsewhere in the pulp mill. The vacuum tank may be positioned above the dissolving tank to receive liquor directly from it, and the condenser may be positioned in it to return condensate directly to the dissolving tank.  Alternatively the vacuum tank and condenser may be remote from the dissolving tank and connected to the dissolving tank by a conduit.
Patent CA-2189193-A1 (CA)
Title: Process for producing all trans-form polyprenols
Inventor: ASANUMA GORO
IPC: C07D303/22
Filed: 1996-10-30
Abstract: An all trans-form polyprenol is obtained by;     (A) subjecting a 3,7-dimethyl-6-hydroxy-7-octen-1-ol derivative to five-carbon lengthening reaction m-times which comprises reacting with 2-methyl-3,3-dimethoxy-1-butene and reducing the carbonyl group of the resulting compound, to obtain an allyl alcohol derivative;     (B) halogenating the hydroxyl group of the allyl alcohol derivative to convert it to form an allyl halide derivative;     (C) allowing the allyl halide derivative to react with a polyisoprenyl sulfone derivative to form a sulfonated polyprenol derivative; and (D) subjecting the sulfonated polyprenol derivative to desulfonylation to obtain the all trans-form polyprenol.
Patent CA-2190486-A1 (CA)
Title: Method of clustering multi-dimensional related data in a computer database by combining the two vertices of a graph connected by an edge having the highest score
Inventor: POPPEN RICHARD F
IPC: G06F17/30
Filed: 1995-05-17
Abstract: A method of clustering multi-dimensional related data performed by identifying features from a collection of data, each of said features being represented by a vertex (31, 32, 33, 34, 35), selecting pairs of features that it is desirable to cluster together, connecting the pair of vertices representing every selected pair of features by an edge (40, 41, 42, 43), assigning a score to every edge according to a predetermined formula, selecting an edge having the highest score, creating a new vertex by merging the vertices connected by the selected edge (17), creating new edges between the new vertex and the vertices previously connected to the merged vertices, and repeating this procedure until every edge has a predetermined score.
Patent CA-2193995-A1 (CA)
Title: Predetermined crack joint rail
Inventor: SCHMID RENE P
IPC: E02D29/16
Filed: 1995-06-23
Abstract: Contraction joint rail for fitting in a wall (4) to be concreted and the use of such a rail which consists of a strip-like bar (1) with a device fitted to it forming an injection channel (2) extending over the length of the bar (1).      The bar (1) may consist of a thin-walled plastic component, sheet zinc or the like. The device forming the injection channel (2) may be a foam strip (12) applied to the bar (1).      The bar (1) may be fitted on both sides with a device forming an injection channel (2) and/or have perforations (5) permitting the penetration of a sealing material. The contraction joint rail of the invention is applied to an area of the wall (4) to be concreted and extends over the entire height of the wall (4), whereby after the wall (4) has been concreted, sealing material is sprayed into the injection channel (2) thus formed.
Patent CA-2195308-A1 (CA)
Inventor: BLOCK PETER C
IPC: A61F2/24
Filed: 1995-07-18
Abstract: An inflatable prosthetic cardiovascular valve which is constructed so as to be initially deployable in a deflated "collapsed" configuration wherein the valve may be passed through the lumen of a cardiovascular catheter and subsequently inflated to an "operative" configuration so as to perform its intended valving function at its intended site of implantation within the cardiovascular system. The inflated valve may be held in place by mechanical means (e.g., hooks, projections), by chemical adhesive or through biological assimilation by the heart tissue.
Patent CA-2195433-A1 (CA)
Title: Procede de fixation d'un element metallique tubulaire dans une ouverture et outil pour ce faire
Inventor: SUMMERS DENNIS ARTHUR
IPC: B21D39/04
Filed: 1995-06-19
Abstract: Un procédé de fixation d'un élément métallique tubulaire dans une ouverture consiste à placer l'élément métallique tubulaire dans l'ouverture et à déformer le métal de l'élément tubulaire pour dilater et étirer celui-ci dans les limites de cette ouverture, cette dernière pouvant être formée par maçonnerie. L'invention concerne également un procédé de fixation de deux éléments métalliques tubulaires consistant à placer un premier élément métallique tubulaire (10) dans une ouverture transversale (12) d'un second élément métallique tubulaire (11), et à déformer le métal du premier élément (10) pour dilater (13) et étirer celui-ci dans le passage longitudinal du second élément (11) à l'emplacement de l'ouverture transversale traversante (12). Un outil utilisé pour réaliser ce procédé est également décrit.
Patent CA-2197390-A1 (CA)
Inventor: LIU YANMING
IPC: G02B6/036
Filed: 1997-02-12
Abstract: A single mode optical waveguide having large effective area is disclosed. The large effective area is achieved by using a segmented core profile design which includes at least one segment, or a part of one segment, having a refractive index less than the minimum refractive index of the clad layer. The large effective area serves to reduce or eliminate detrimental non-linear optical waveguide effects which limit regenerator spacing and bit rate. The large effective area is achieved while maintaining bend resistance at least as good as that of standard step index single mode waveguide fiber.
Patent CA-2197606-A1 (CA)
Title: Cutting tip
Inventor: GALITZER BARRY D
IPC: A61B17/86
Filed: 1997-02-14
Abstract: A new cutting tip and a very simple method for making the tip are given. The tip has no flutes but has a built-in chip clearance. It is self-drilling, self-tapping, and self-locating and can be positioned on a threaded or unthreaded member. When it is the tip on a suture anchor, it maximizes holding strength of the anchor.
Patent CA-2197898-A1 (CA)
Inventor: SEGURA BADIA MARCELO
IPC: A61M5/31
Filed: 1997-02-18
Abstract: The improvements are applicable to connections of the type comprising a central body which receives, at one end, the terminal for connection to the perfusion container and, at the other end, the terminal of the duct carrying the catheter, so that the terminal carrying the needle is provided with external guide means arranged symmetrically with respect to the needle, in a position encasing the needle, and capable of being guided in the central body carrying the disinfecting element, which is joined to the parts which are connected, respectively, to the duct connected to the perfusion container and to the duct connected to the catheter in a leakproof and non-releasable manner, thus achieving improved guiding of the needle and a high level of asepsis in the connection.
Patent CA-2198608-A1 (CA)
Inventor: SOLLINGER HANS-PETER
IPC: B65H18/00
Filed: 1996-06-26
Abstract: The invention relates to an improved blasting media which has a lattice fiber structure which is used as a carrier for other desired components. Desired abrasive components (6), polishing components (8), and/or absorptive components (10) are attached to the strands of the carrier components (4) with an adhesive (27) or a binder (11) in order to form a plurality of individual, discrete granules which are readily propellable by conventional blasting equipment against the surface to be treated. The latticed fiber carrier component has improved integrity over prior art media carriers as it is not prone to readily break down during use and thereby facilitates regeneration of the blasting media once the effectiveness of the media has been substantially reduced. The invention also relates to an improvement in equipment for propelling the blasting media against a desired surface, the addition of moisture to the blasting media impacting a surface to be cleaned, and a method of regenerating the blasting media once its effectiveness has been substantially reduced.