baber/WOPTO huggingface dataset:
Patent CA-2249877-A1 (CA)
Inventor: RUSCH LESLIE ANN
IPC: H04B1/713
Filed: 1998-10-08
Abstract: An improved method and apparatus for optical and radio frequency implementation of a fast frequency hopping spread spectrum communication for code division multiple access systems is disclosed. The method avoids the frequency hopping synthesizer requirements in the transmitter as well as in the receiver. In a system where a pool of CDMA users share a channel characterized by a number of F  available frequencies (or frequency bands), each user is assigned a subset of M (M less than or equal to F) frequencies from the F available frequencies, selected and ordered in time as prescribed by his own code (or address). In the transmitter, the information bit sequence modulates a broadband source so that the energy assigned to a data bit is concentrated on just a short interval of the bit period which is less than or equal to the so-called chip interval. The data modulated signal enters equipment which simultaneously or sequentially performs three functions: 1) spectral slicing of the input signal into chip pulses, 2) a chip-pulse modulation and 3) a chip-pulse delaying.  The output is an FFHSS signal composed from M    sub--pulses (or chip-pulses), each of which is centered at different frequency and ordered in time as fixed by the FFH code. In an optical implementation, a broadband source and a set of in-line fiber Bragg gratings performs the FFHSS encoding and decoding operations with ASK chip-modulation. The gratings can be tuned to allow the programmability of the encoding/decoding system.
Patent CA-2250392-A1 (CA)
Title: Dual lamp fixture with integral control
Inventor: POPIG DARYL A
IPC: B60Q1/26
Filed: 1997-03-27
Abstract: A dual lamp fixture (10) having an integral power supply and control circuit. The dual lamp fixture (10) utilizes stroboscopic and incandescent lamps (20, 22) mounted near the focus of a parabolic reflector (16) which may be actuated alternately, individually or simultaneously. Multiple lamps may be connected in parallel to a DC power bus (100) and a differential line, twisted-pair communication bus (42) to achieve a variety of controlled flashing patterns. Each lamp (20, 22) will perform its given tasks when an appropriate command signal is placed on the communication bus. To take full advantage of this distributed control and the advantages in bus-wiring topology, the power supply (100) is located in close proximity to its controller (43) and light fixture (10).
Patent CA-2253514-A1 (CA)
Title: Process for the preparation of a terpolymer of ethylene, an .alpha.-olefin and a diene
Inventor: WINDMULLER PETER JOZEF HUBERT
IPC: C08F4/659
Filed: 1997-05-01
Abstract: The invention relates to process for the preparation of a terpolymer of ethylene, an .alpha.-olefin and a diene, and which comprises the use of a transition metal complex and a co-catalyst. The invention is characterized in that the polymerization is conducted using a transition metal complex consisting of a reduced transition metal complex, chosen from groups 4-6 of the Periodic Table of the Elements, with a multidentate monoanionic ligand and with two monoanionic ligands, at a temperature of between -10 and 220 ~C. In particular the reduced transition metal in the complex is titanium (Ti).
Patent CA-2255253-A1 (CA)
Title: Reduced shock landing collar
Inventor: HIRTH DAVID E
IPC: E21B21/10
Filed: 1998-12-03
Abstract: A landing collar is disclosed which defines a sealed cavity around its periphery.   The landing collar has a seat to accept a sphere. Upon application of pressure on the sphere, the pressure rises on fluid in the chamber which surrounds the landing collar. At a predetermined pressure in the chamber, a rupture disc breaks which allows the fluid in the chamber to escape through a restrictor, thus regulating the rate of movement of the landing collar to expose gradually a bypass opening around the landing collar. Because the movement of the landing collar is regulated by the orifice adjacent the rupture disc, shock to the formation below is eliminated.   In the event of sticking of the landing collar, an emergency release is possible since the landing collar is configured in two parts which can be pinned together.  Upon an application of pressure higher than the pressure to break the rupture disc, the shear pins fail and a portion of the landing collar with the sphere disconnects to allow communication to the formation below.
Patent CA-2259055-A1 (CA)
Title: Load power reduction control and supply system
Inventor: POLETTI FRANCO
IPC: H05B41/40
Filed: 1999-01-14
Abstract: The invention is a load voltage and power control and supply system for the supply of power to a load for which, over particular periods of time, usually on a daily basis, it is desired to reduce power. The invention has particular application to street lighting systems in which, for a period of several hours during the night (when traffic is minimal and many people are asleep), the luminaires of the lighting system can operate at reduced power. The power control system is able to act as a voltage stabilizer as well as a controlled power reduction system. The power control system may operate the bank of spaced luminaires from a single control location. Moderately reduced power (say a 30% reduction in power) supplied to luminaires does not noticeably diminish the adequacy of the illumination provided. Further, the power control system reduces power in stepwise decrements each of which reduces power by a small amount insufficient to diminish noticeably the ambient illumination.
Patent CA-2265838-A1 (CA)
Inventor: ROLLAND ALAIN
IPC: C12N15/88
Filed: 1997-09-11
Abstract: L'invention porte sur des compositions et des procédés de libération de gènes dans les voies respiratoires. Elle porte plus particulièrement sur des compositions contenant un complexe acide nucléique/agent stabilisant en aérosol et sur des procédés dans lesquels on utilise ces complexes pour libérer des gènes dans les voies respiratoires. De tels complexes se présentent de préférence sous forme d'aérosols soniques.
Patent CA-2266544-A1 (CA)
Title: Machine for digging under pipes and caterpillar traction device
Inventor: IBRAGIMOV MARAT SH
IPC: E02F5/10
Filed: 1997-09-25
Abstract: The present invention is for a machine for digging under pipes, wherein the machine comprises a frame having a caterpillar drive; traction device mounted thereon, as well as left and right end effectors. The end effectors are each made in the shape of a mount which is attached to the frame and capable of forced rotation about the vertical axis. These end effectors also comprise a cylindrical endless-screw-type driving cutters as well as a cylindrical blade attached to the mount co-axially behind the cutter. The cutter is mounted at a lower end and on the side of the mount so that its rotation axis is horizontal. The machine further includes a transversal stabilization device comprising two stabilization mechanisms, wherein each mechanism comprises an adjustable-height support member that rests on the bottom of the trench.  The traction device includes a frame as well as a caterpillar that comprises rigid brackets and flexible support members. The brackets extend outwardly from the external surface of the caterpillar central part. The flexible support members are connected to the brackets so as to be incapable of linear displacement and are made short enough so as to stretch about the profile of the pipe cross-section.
Patent CA-2268035-A1 (CA)
Title: Lubricity additives for fuel oil compositions
Inventor: LE DEORE CHRISTOPHE
IPC: C10L1/18
Filed: 1997-09-15
Abstract: Specific substituted aromatic amide salt compounds are useful as lubricity additives for middle distillate fuel oils.
Patent CA-2270649-A1 (CA)
Inventor: KIM YONG-SUK
IPC: H04W28/06
Filed: 1999-04-29
Abstract: A device for data communications between a Wireless Application Protocol (WAP) terminal and a WAP server, and a data communication method thereof. The data communications device includes: a plurality of WAP terminals each having a protocol stack in which a Circuit Switch Data service (CSD) protocol layer is laid under a Wireless Transaction Protocol (WTP) layer and a Wireless Datagram Protocol (WDP) layer, for generating WAP data which is service request data; a plurality of WAP servers each having a protocol stack in which a Transmission Control Protocol (TCP) layer and an Internet Protocol (IP) layer are laid under a WTP layer and a WDP layer, for providing the WAP terminals with WAP server data according to the WAP data; and an interworking function (IWF) unit having a CSD protocol layer connected to the CSD protocol layers of each WAP terminal, and a TCP layer and an IP layer which are connected to the TCP and IP layers of each WAP server, for mapping the WAP terminals to the corresponding WAP servers, wherein each WAP terminal communicates with the IWF unit though a single Internet Protocol/Peer-to-Peer Protocol (IP/PPP) layer included in its own CSD protocol layer, and the IWF unit communicates through the Internet with each WAP server. Because there is no redundancy of IP/PPP protocol layers in the WAP terminal, overhead is considerably reduced. Also, the IWF unit is directly connected through the Internet to the WAP server, not through the PSTN and the ISP, so that connection time and costs can be reduced.
Patent CA-2272100-A1 (CA)
Title: Method for preparation of metal intercalated fullerene-like metal chalcogenides
Inventor: HOMYONFER MOSHE
IPC: G02F1/1524
Filed: 1997-11-27
Abstract: A method for the preparation of nanoparticles of metal oxides containing inserted metal particles and to metal-intercalated and/or metal-encaged "inorganic fullerene-like" (hereinafter IF) structures of metal chalcogenides obtained therefrom is provided, which comprises heating a metal I material with water vapor or electron beam evaporation of said metal I material with water or another suitable solvent, in the presence of a metal II salt, and recovering the metal II-doped metal I oxide, or proceeding to subsequent sulfidization, yielding bulk quantities of metal II-intercalated or metal IIencaged IF structures of the metal I chalcogenide. The metal II salt is preferably an alkaline, alkaline earth or transition metal salt, most preferably an alkali chloride. The intercalated and/or encaged IF structures are useful as lubricants. They also form stable suspensions, e.g. in alcohol, and electrophoretic deposition from said suspensions yields thin films of the intercalated IF materials, which have a range of potential applications.
Patent CA-2272945-A1 (CA)
Title: 1,4-dihydropyridine derivatives
Inventor: TANABE HIROKAZU
IPC: C07D471/04
Filed: 1997-11-25
Abstract: 1,4-Dihydropyridine derivatives of general formula (I); and antagonists against carcinostatic tolerance and potentiators for carcinostatics containing the derivatives or pharmacologically acceptable salts or hydrates thereof as the active ingredient, wherein R1 is optionally substituted phenyl or heterocyclic group; R2 is C1-C5 lower alkyl; R3 is optionally substituted C2C8 alkyl, alkenyl or alkynyl or optionally substituted cycloalkyl; R4 is -A-R5; A is C2-C8 alkylene or optionally substituted C2-C8 alkenylene; and R5 is optionally substituted pyridyl, pyridylcarbonyl or piperazinyl.
Patent CA-2273202-A1 (CA)
Inventor: WILLIAMS LISA
IPC: G01N33/53
Filed: 1997-12-01
Abstract: A transmembrane protein located at tight junctions is disclosed. The protein is expressed in endothelial cells, epithelial cells, megakaryocytic cells and platelets. This protein is called junctional adhesion molecule (JAM). The amino-acid sequence of human JAM and of murine JAM are presented. In addition, the DNA sequences, the genes and recombinant proteins or peptides expressed by the genes or fragments of the genes are disclosed. Furthermore, antibodies binding specifically to JAM or a part of JAM and modifiers, i.e. inhibitors and inducers, of the polymerization of the transmembrane JAM are disclosed, together with the antibodies and the modifier as reagents in diagnostic kits, as well as applications of the modifier as vaccine adjuvant and as active ingredient in medicaments. Finally, transgenic animals or cells overexpressing or lacking JAM are comprised by the disclosure.
Patent CA-2273515-A1 (CA)
Title: Wet/dry vacuum
Inventor: HOSHINO KIYOSHI
IPC: A47L5/24
Filed: 1999-06-02
Abstract: A vacuum appliance is disclosed, comprising a collection canister and a powerhead housing a motor and impeller assembly for establishing vacuum pressure within said canister. In one embodiment, the appliance is of the wet/dry variety. A filter assembly comprising a rigid filter cage around which a filter is disposed. The filter cage is supported on an underside of the powerhead and extends into the collection canister such that the bottom of the filter assembly is at or substantially near the bottom of the collection canister. As a result, deflection of the collection canister as a result of vacuum pressure built up in the canister is resisted by the rigidity of the filter cage. In one embodiment, a frame within the powerhead serves the dual functions of supporting the motor and defining one wall or surface of an impeller chamber in which an impeller rotates to create the vacuum pressure. Barbed latches projecting from the powerhead function to removably secure the powerhead over the open top of the collection canister by engaging notches formed in the side of the canister. Substantially flat surfaces are formed in the vacuum's powerhead to facilitate the actuation of the latches, which is intuitively and ergonomically accomplished by a user resting his or her palm, thumb, or fingers on the substantially flat surfaces and grasping the latches with his or her free fingers.
Patent CA-2275962-A1 (CA)
Title: Method for purifying a cryogenic fluid by filtration and adsorption
Inventor: CASTELLANET FREDERIC
IPC: F17C7/00
Filed: 1997-12-18
Abstract: The invention concerns a method for purifying a cryogenic fluid selected from the group formed by helium, hydrogen, deuterium, argon, neon, xenon or krypton in liquid state, diphase, gaseous or supercritical, having a boiling point Pe, in one at least of its impurities having a boiling point Pe', with Pe' > Pe, comprising at least: a step of filtering at least one impurity in solid state using a mechanical filter; and a step of adsorption of at least one impurity in liquid or gaseous state; and in which at least part of the cryogenic fluid at least partially purified is recuperated, said fluid containing not more than 1 ppb of impurities. The invention also concerns a device for implementing the method.
Patent CA-2276494-A1 (CA)
Title: Method and apparatus for correcting errors in computer systems
Inventor: KEPPEL DAVID
IPC: G06F11/28
Filed: 1998-02-13
Abstract: A computer implemented process for detecting errors in a computer system including the steps of executing sequences of instructions of a software program (12) on each of a reference system (16) and a test system (15), detecting and recording state of the reference system (16) and the test system (15) at comparable points in the execution of the program (12), and comparing the detected state of the reference system (16) and the test system (15) at selectable comparable points in the sequence of instructions including the end of the sequence of instructions. In a particular embodiment, the execution of portions of the sequence of instructions between selectable comparable points on each of the reference system (16) and the test system (15) is automatically replayed if a difference in the compared state of the systems is detected.
Patent CA-2278598-A1 (CA)
Inventor: NEUBAUER GERHARD
IPC: B29C49/56
Filed: 1998-01-14
Abstract: Disclosed is a device (10) for producing cross-finned pipes, which exhibits molding cheek halves (12) lying adjacent to each other along a common molding segment and forming a molding channel (18) in-between the latter. A stationary linear guiding device (42) is provided along the molding segment in order to guide the molding cheek halves (12). Said device exhibits an elongated central sliding body (44), preferably made of a sliding metal alloy, and two guiding oil-lubricated bodies (46) placed laterally adjacent to the sliding body (44), said bodies being made preferably of an abrasion-resistant metal.
Patent CA-2279219-A1 (CA)
Inventor: STENGEL FRANCIS A JR
IPC: H01Q5/15
Filed: 1999-07-30
Abstract: The present invention provides an antenna system having one or more of the following characteristics or features:      Disguised Antenna System;      Dual band operation:      Broad band operation;      Isolation between transceivers to eliminate the need for change over switches or relays; and Built in broadcast coupler The foregoing can be provided by decoupling the antenna mast for multiple bands by use of a quarter wave decoupling stub or by the use of a frequency relative trap. As a result the antenna has multiple resonances simultaneously. The foregoing also can be accomplished by selecting antenna mast lengths that are harmonically related to provide a single element with multiple resonances without external devices. A diplexer comprising the combination of high and low pass filters and a broadcast coupler can be connected to the antenna feed point with transceivers operating in the different bands being connected to the high and low pass filters.      The simultaneous multiple resonances ensure a matched impedance at the antenna feed point so that when a communications device is connected by a length of coax to the antenna feed point the matched impedance will be maintained at the feed point regardless of the length of the coax.
Patent CA-2279996-A1 (CA)
Inventor: MITRANI EDUARDO N
IPC: C12M3/04
Filed: 1998-01-09
Abstract: A device for performing a biological modification of a fluid, particularly in order to assist or replace the functioning of an organ which normally performs this modification, including a collection of liver micro-organ cultures. The device of the present invention is preferably directly connected to a subject for performing this modification.
Patent CA-2283297-A1 (CA)
Title: New formulation
Inventor: SZAMBIEN OLIVER
IPC: A61K31/655
Filed: 1998-03-13
Abstract: The invention provides a unit formulation which comprises a 2-hydroxy-5-phenylazobenzoic acid derivative which is particularly sodium balsalazide dihydrate which formulation has a density of at least 0.9 mg/mm3 and its use in the treatment of gastrointestinal diseases.
Patent CA-2284124-A1 (CA)
Title: Procede permettant de fabriquer un feuillard d'acier a resistance et a malleabilite elevees
Inventor: ENGL BERNHARD
IPC: C21D8/02
Filed: 1998-03-10
Abstract: Procédé permettant de produire un feuillard d'acier hautement résistant d'au moins 900 MPa et présentant une bonne malléabilité. Ledit acier contient (en % en masse) 0,10 à 0,20 % de C, 0,30 à 0,60 % de Si, 1,50 à 2,00 % de Mn, au plus 0,08 % de P, 0,30 à 0,80 % de Cr, jusqu'à 0,40 % de Mo, jusqu'à 0,20 % de Ti et/ou de Zr, et jusqu'à 0,08 % de Nb, le reste étant constitué de fer et des impuretés inévitables. Il est élaboré, coulé en brames et enfin laminé à chaud. La température finale de laminage est supérieure à 800 ·C, la vitesse de refroidissement sur le train à rouleaux d'évacuation est d'au moins 30 ·C/s et la température de dévidoir de 300 à 600 ·C.
Patent CA-2284424-A1 (CA)
Title: Box making machines and method of retrofitting
Inventor: PHILLIPS DANIEL CUNNINGTON III
IPC: B31B50/07
Filed: 1999-09-30
Abstract: An existing box-making machine is retrofitted by first removing the pull rolls and impression cylinder and other associated parts and cross-ties. However, the heavy duty side frames and drums, including the print cylinder are left intact in the box-making machine. A vacuum transfer machine is then inserted in the box--making machine and mounted to the existing frame to replace the pull rolls that were removed. The vacuum transfer machine includes a hood enclosure having an impression cylinder for printing, and transport rolls on opposite sides of the impression cylinder for conveying the corrugated boards through the impression and print cylinders and to the die cutter. The boards are held against the transport rolls and the impression cylinder by vacuum generated in a vacuum chamber in the hood which also contains the transport rolls and the impression cylinder. The vacuum chamber contains a plurality of vacuum dampers for controlling the vacuum area in accordance with the size of the boards being processed. For creating vacuum in the vacuum chamber, high performance "volume blowers" are included on the top of the vacuum transfer machine. Exhaust air from the vacuum chamber is dispersed through filters located adjacent to the blowers. The hood is suspended from a cross-tie which is part of the vacuum transfer machine and adapted to be mounted to the opposite side frames of the existing box-making machines. The cross-tie has a vertically adjustable portion for adjusting the nip of the impression cylinder.
Patent CA-2285102-A1 (CA)
Title: Spark resistant structure, in particular for aircraft
Inventor: AVENET JEAN-PIERRE
IPC: B64D45/02
Filed: 1998-06-10
Abstract: The invention concerns a spark resistant structure, in particular for aircraft, characterised in that the external element (1) comprises, under a surface conducting coat (5), an electrically conducting strip (20) extending longitudinally in the direction (L-L) of the fixing means (14, 18) alignment, traversed by said fixing means (14) and in electric contact therewith, and the electric contact between, on one hand, each of said fixing means (14, 18) and the surface conducting coat (5) and, on the other, with the conductive strip (22), is obtained by an amount of electrically conductor paste (17) inserted in said external element (1) holes (11).
Patent CA-2285852-A1 (CA)
Title: Pharmaceutical tablet comprising lisinopril disodium and microcrystalline cellulose
Inventor: SHERMAN BERNARD CHARLES
IPC: A61K9/20
Filed: 1999-10-26
Abstract: A solid pharmaceutical composition for oral administration comprising lisinopril as the disodium salt and microcrystalline cellulose, and process for making same.
Patent CA-2286657-A1 (CA)
Title: Automatic swimming pool cleaners and associated components
Inventor: VAN DER MEYDEN HENDRIKUS JOHAN
IPC: E04H4/16
Filed: 1998-03-16
Abstract: The systems include an automatic swimming pool cleaner (10) incorporating one or more curved wipers protruding from its lower surface. The wipers and flat bottom of the cleaner induce a vortex as fluid flows to its central inlet, entraining debris in the flow. A fluted throat surrounding the inlet additionally assists the interior of the base of the cleaner in retaining debris when opened for cleaning, additionally providing an improved flow path for enhanced debris pick-up.  Alternate embodiments incorporate a rudder and resistance plate for enhancing movement of the cleaners in the presence of obstacles. Also disclosed is a valve useful for controlling and indicating the rate of fluid flow to a cleaner. Included within the valve is a plunger attached to a spring, with the spring force opposing fluide flow through the valve. Flow sufficient to overcome the spring force compresses the spring, however, thereby moving the plunger within the tube and providing a dynamic indication of the rate of fluid flow. A diffuser and fluid release ports permit the valve to be adjusted to achieve a desired flow rate.