baber/WOPTO huggingface dataset:
Patent CA-2264770-A1 (CA)
Title: An arrangement relating to high-speed tools
Inventor: LIND BJOERN
IPC: B23Q11/00
Filed: 1997-08-28
Abstract: An arrangement relating to high-speed tools, such as milling tools and drilling tools, includes a drive unit (2) having a high-speed spindle (4), a drive-unit connected adapter (1) that has a supportive part (17), and a tool that includes a cutting head (24). The tool is provided with a bearing surface (26) in the close proximity of the cutting head and a fastener means (27) which is located remote from the cutting head and which is guided and driven by the spindle (4). The supportive part (17) on the adapter (1) has a bearing (18) which takes up cutting forces acting radially on the tool and which coacts with the tool-carried bearing surface (26).
Patent CA-2265728-A1 (CA)
Title: Treatment of chlorine dioxide generator effluent and feed streams with fixed-resin bed
Inventor: PALEOLOGOU MICHAEL
IPC: C01D5/16
Filed: 1997-10-09
Abstract: A process employing a fixed-resin bed Acid Retardation Unit (ARU) to separate spent acid from chlorine dioxide generators into a de-acidified sodium sulfate component and a purified sulfuric acid component. The de-acidified sodium sulfate produced is returned to the chemical recovery cycle of the kraft mill in place of acidic chlorine dioxide generator effluent thereby avoiding the destruction of alkalinity in pulp mill liquors. In addition, sulfuric acid is purified providing an opportunity for reuse in various mill applications, and/or concentrated and recycled to the generator. Alternatively, to avoid high evaporation costs, the purified acid can be used to regenerate a cation-exchange unit (CEU) used in the conversion of sodium chlorate to a sodium chlorate/chloric acid mixture which is fed to the generator in place of sodium chlorate and sulfuric acid. Using this approach, the sulfuric acid requirement of chlorine dioxide generators and, in turn, the amount of acidic generator effluent can be reduced. The process is applicable to both atmospheric and subatmospheric chlorine dioxide generators. In the latter case, the concentration of the purified sulfuric acid from the ARU or any other acid separation system can be increased by using a portion of it to dissolve the sodium sesquisulfate by-product from such generators.
Patent CA-2265968-A1 (CA)
Inventor: FISCHER ALAN
IPC: D01F11/16
Filed: 1997-09-04
Abstract: A method of treating carbon fibrils and carbon fibril structures such as assemblages, aggregates and hard porous structures with a plasma to effect an alteration of the surface or structure of the carbon fibril or fibrils. The method can be utilized to functionalize, prepare for functionalization or otherwise modify the fibril surface via a "dry"  chemical process.
Patent CA-2267628-A1 (CA)
Title: Gas flow silencer
Inventor: FREDERIKSEN EYVIND
IPC: F01N1/12
Filed: 1997-09-30
Abstract: A device (a silencer) for silencing a flow of gas, such as an exhaust gas, comprises at least one acoustic chamber (1, 2, 3) through-flowed by gas, at least one inlet pipe (6) for leading gas into the device and at least one pipe or passage (4, 12, 13) interconnecting two chambers or a chamber and an exterior environment or chamber and is designed with such features, including such cross-sectional area transitions between pipes or passages (4, 6, 12, 13) and the chambers (1, 2, 3) that the sound attenuation achieved by the device is high while the pressure drop across the silencer is low and that high attenuation at low characteristic frequencies of flow systems comprising the device are obtained. One or more diffusers (10a, 12a, 13a) for diffusing at least part of the gas flow, e.g., at the inlet to the chambers may be comprised in the device. One or more monolithic bodies or catalysers may be comprised in the device. Devices with curved or helical passages (Fig. 5) allowing a low natural frequency and embodiments having resonance chambers (Fig. 10a, b) attenuating at selected frequencies are disclosed. The device may be used for vehicles, including ships or boats and for stationary installations, such as power plants or stationary engines. A method for designing and/or dimensioning the device for a given desired sound attenuation over a given frequency spectrum at given spatial restrictions is disclosed.
Patent CA-2270582-A1 (CA)
Inventor: LAMERANT JEAN-MICHEL
IPC: C01F7/442
Filed: 1997-11-03
Abstract: L'invention concerne un procédé de fabrication d'alumine pour céramique par calcination de trihydrate d'alumine en présence d'un minéralisant tel qu'un composé halogéné et/ou un composé du bore, ladite alumine calcinée étant constituée d'agglomérats friables de particules élémentaires ou cristallite d'alumine alpha dont la taille moyenne est réglée à la demande avec une distribution unimodale resserrée des tailles de cristallite caractérisé en ce que la calcination en four industriel, sous atmosphère oxydante renouvelée, de la charge de trihydrate d'alumine à une température comprise entre 800 ~C et 1300 ~C pendant une durée de 1/2 heure à 4 heures est effectuée en présence simultanément d'un composé halogéné faisant office de minéralisant et d'un modificateur de recristallisation de l'alumine, à base de silice, uniformément et intimement réparti dans la charge de trihydrate d'alumine.
Patent CA-2271241-A1 (CA)
Title: Continuous sintering plant integrated with glove box for maintenance use
Inventor: AONO SHIGENORI
IPC: G21F7/04
Filed: 1998-09-21
Abstract: A continuous sintering plant for use in sintering nuclear fuel pellets or the like, having an integrated structure where the upper part of a sintering furnace is incorporated in a glove box for maintenance use. The furnace consists of a furnace body and a freely detachable top cover which can be opened within the glove box while the enclosed state is maintained. A furnace member accommodated inside the furnace comprises a combination of furnace member units and can be drawn out of the furnace into the glove box for maintenance work. An overhead traveling crane is disposed in the upper part of the glove box, and a space for temporarily placing the top cover and a working space for maintenance are secured. The working space is preferably provided with a rotary table on which the drawn-out furnace member units can be placed.
Patent CA-2273945-A1 (CA)
Inventor: OKADA HIROHARU
IPC: B42D15/10
Filed: 1997-12-08
Abstract: A non-contacting type IC card (100) is provided with a plurality of coil sheets (11, 12, ..., 1n). On the surfaces of the coil sheets (11, 12, ..., 1n), conductive layers (L1, L2, ..., Ln) patterned in coil-like states are respectively formed. When the coil sheets (11, 12, ..., 1n) are superimposed upon each other, an antenna coil (L) is formed. In a method for manufacturing the card (100), tape-like coil sheets (110, 120, 130, ...) on which pluralities of conductive layers (L1, L2, L3, ...) are respectively formed in rows by arranging the layers (L1, L2, L3, ...) at intervals in the lengthwise direction and in which pluralities of perforations (110b, 120b, 130b, ...) are arranged in rows in the lengthwise direction at intervals are used. The coil sheets (110, 120, 130, ...) are pulled out by using a roller (31) having projections which are engaged with the feed holes (110b, 120b, 130b, ...).
Patent CA-2274878-A1 (CA)
Title: Ink jet cartridge, ink jet head and printer
Inventor: ABE TSUTOMU
IPC: B41J2/175
Filed: 1993-07-21
Abstract: An ink jet cartridge includes a first chamber for accommodating a negative pressure producing material and provided with air communication part for communication with ambient air, wherein a part of the negative pressure producing material does not contain ink adjacent the air communication part; a second chamber which is substantially closed except for a fine communication part for communication with the first chamber at a position away from the air communication part, wherein the second chamber directly accommodates the ink to be supplied to the first chamber.
Patent CA-2277467-A1 (CA)
Title: Cell disruption method using sonication
Inventor: LLORIN OSCAR J
IPC: C12N13/00
Filed: 1999-07-13
Abstract: The present invention relates to a method for disrupting cells by subjecting the cells to ultrasonic energy in the absence of beads. The present invention also relates to the enhancement of cell disruption methods using ultrasonic energy by reducing the surface tension of the liquid in which the cells are located.
Patent CA-2279989-A1 (CA)
Inventor: KODALI DHARMA R
IPC: C05G3/20
Filed: 1998-01-20
Abstract: A coated granular inorganic substance and a method for producing the coated substance are provided. The coated granular inorganic substance includes inorganic particles having outer surfaces at least partially coated with an organic layer which includes a phosphorus-containing, amphiphilic component. A  coating composition which includes a phosphorus-containing, amphiphilic component and a fertilizer spreader containing fertilizer particles having outer surfaces substantially coated with an organic layer which includes the phosphorus-containing, amphiphilic component are also provided.
Patent CA-2280406-A1 (CA)
Title: Apparatus for and method of coating particulates
Inventor: FLOWER ARNOLD B
IPC: B05C3/08
Filed: 1999-08-16
Abstract: The invention provides an apparatus and method for creating dry coated particulates from particulates and a liquid. A mixer receives the particulates and liquid and creates a wet mixture which is then subjected to hot air from a hot air generator to dry the mixture and produce the dry coated particulates. In a preferred form the apparatus includes a floating coupling between the mixer and the generator to permit some relative movement, and load cells are used to control the amount of particulates loaded into the mixer. There is similar control of the liquid and a control console is provided to receive data and send instructions to cause the apparatus to cycle through repetitive batch processes in a continuous process. The mixer preferably includes structure to cause the hot air to enter the mixture as it moves downwardly in the mixer for enhanced drying.
Patent CA-2282511-A1 (CA)
Inventor: HART CHARLES C
IPC: A61F2/90
Filed: 1998-01-09
Abstract: Cet extenseur (30) se compose d'un conduit souple et de forme allongée, à paroi très mince et à diamètre et longueur préformés. Cet extenseur est construit à partir d'une structure tubulaire tissée de multiples brins ou éléments et mise en forme par la chaleur, afin de présenter un diamètre et une longueur déterminés et que l'état naturel ou "au repos" de la structure tubulaire soit prévisible. On peut former un élément de rétention ou de support (48) au niveau de l'une ou des deux extrémités de l'extenseur, et on peut réduire le diamètre de cet élément pour pouvoir l'insérer dans un passage corporel. La structure tubulaire tissée constitue un trajet permettant aux fluides de s'écouler dans et autour de l'extenseur, lors de la réalisation d'une lumière libre, et elle permet d'étendre ou d'étirer l'extenseur sur un fil de guidage ou sur un autre élément non compressif, afin de réduire le diamètre de l'extenseur et pouvoir insérer celui-ci dans un passage corporel.
Patent CA-2282925-A1 (CA)
Title: Process for manufacturing shaped packaging
Inventor: ZEITER PATRIK
IPC: B29C51/14
Filed: 1999-09-15
Abstract: Process for manufacturing cold formed shaped packaging having at least one recess mane from a metal-plastic laminate 20. Examples of such shaped forms of packaging are the base parts of push-through packs or blister packs. The process is such that the laminate 20 is held between a retaining tool 5 and a die 1. The die 1 exhibits at least one opening 8 and a stamping tool 6 is driven into the die opening 8 causing the laminate to be shape-formed into the said packaging and, correspondingly, exhibiting one or more recesses. The die 1 and the retaining tool 5 exhibit facing edge regions 11,12, and within the edge region 11 the die 1 exhibits a shoulder region 13 that surrounds the die opening 8 or openings 8. The surface of the shoulder region 13 lies 0.01 to 10 mm lower than the surface of the edge region 11 of the die 1. A first stamping tool with low-friction shape-forming surface forms the metal-plastic laminate in one or more steps down to 100 % of the final depth of the recess and subsequently the same or a second stamping tool 6 likewise with low-friction shape-forming surface effects the final forming of the pre-formed laminate 20 in one or more steps to at least 100 % of the final depth of the recess.
Patent CA-2283708-A1 (CA)
Title: Biodegradable tissue retractor
Inventor: POFF BRADLEY C
IPC: A61M31/00
Filed: 1998-03-20
Abstract: This invention describes novel methods and devices for stabilizing and retracting tissue during surgery, in particular internal tissue. Patches of material, preferably biodegradable, are adhered to tissue surfaces. By manipulation of the patches, for example directly with forceps, or via sutures attached to the patches, tissues can be retracted or otherwise manipulated with minimal trauma to the tissues. The method is especially useful in minimally-invasive surgery.
Patent CA-2285253-A1 (CA)
Title: Media wall for displaying financial information
Inventor: NOBLE PAUL
IPC: G09G5/00
Filed: 1997-04-04
Abstract: A system dynamically displays graphic identifier information, such as corporate logos, and value information for financial instruments, such as recent trade information, on a video wall having several monitors arranged to form a larger display. The system has input ports to receive feeds with identifiers and corresponding values of financial instruments, a filter to extract the identifiers and corresponding values of the financial instruments, a memory to store the extracted information and a table associating the financial instrument identifiers with graphic symbols, and processors to form a display signal with the graphic symbols and values.
Patent CA-2286095-A1 (CA)
Inventor: HARTMAN MICHAEL G
IPC: F04D29/00
Filed: 1998-03-31
Abstract: Provided in accordance with the principles of the present invention, in one preferred embodiment, is a pumping system (90). The system includes a housing (108) rotatably supporting a tube (112), with a plurality of magnets (116) located around the tube. The magnets create magnetic forces that cause the tube to rotate. The system further includes a pump (94) connected to the tube. When the tube rotates, the pump receives rotational mechanical energy, which operates the pump. Additionally, the tube and pump are connected in fluid communication such that fluid flows through the pump and the tube, when the system operates to pump a fluid. Preferably, the outlet end (98) of the pump connects to the tube in the system so that fluid first flows through the pump, and then through the tube.
Patent CA-2288249-A1 (CA)
Inventor: ROSSON JOEL C
IPC: G02B6/38
Filed: 1999-11-02
Abstract: A gender selectable fiber optic connector is provided which can be readily converted between male and female configurations following assembly and polishing of the connector. The gender selectable fiber optic connector includes a housing, a ferrule operably connected to the housing such that a forward portion of the ferrule extends beyond the housing, and a shroud adapted to be mounted upon the forward portion of the ferrule such that the forward portion of the ferrule extends through a passageway defined by the shroud. In order to alter the gender of the fiber optic connector, the shroud has both male and female configurations. In this regard, the male configuration of the shroud includes at least one guide pin extending lengthwise through the passageway defined by the shroud for engaging a lengthwise extending alignment groove defined by the ferrule in order to produce a male fiber optic connector. In contrast, the female configuration of the shroud is free of guide pins such that mounting the female configuration of the shroud upon the ferrule produces a female fiber optic connector. In addition to the gender selectable fiber optic connector and the associated shroud, a method of fabricating the gender selectable fiber optic connector is provided. Moreover, an outlet assembly is also provided for receiving a fiber optic connector having a rectangular shape in lateral cross-section, such as an MT connector or the gender selectable fiber optic connector having a rectangularly-shaped shroud, and for precisely aligning the rectangularly-shaped fiber optic connector with a substantially cylindrical ferrule, such as a DC  or QC ferrule, so as to increase the flexibility with which different types of ferrules can be interconnected as well as the precision of the resulting interconnection.
Patent CA-2288676-A1 (CA)
Title: Once-through steam generator of double-flue design
Inventor: WITTCHOW EBERHARD
IPC: F22B29/06
Filed: 1998-04-27
Abstract: A once-through steam generator of double-flue design has a first vertical gas flue (4) with ascending conduct of fuel gas. In this generator, the combustion chamber rear wall (7) is inclined inwards relatively to the combustion chamber (8) in an upper part region (11) and thereby forms, with the bottom (12) of the adjoining horizontal gas flue (5), a nose which projects into the combustion chamber (8). Some steam generator tubes (9C) of the lower part region (14) of the combustion chamber rear wall (7) are lead upwards, uninclined, as supports for the said rear wall, as far as a supporting structure (15) located outside the conduct of the fuel gas.
Patent CA-2290903-A1 (CA)
Title: Procede pour rendre les leurres de peche luminescents
Inventor: BELANGER DANIEL
IPC: A01K85/01
Filed: 1999-11-23
Abstract: Tous leurres de pêche sur le marché (pouvant dégager une luminescence) so nt recouverts de peinture ou d'une matière luminescente. Une fois exposé à une lumière intense, ils peuvent éclairer dans le noir d'une faible intensité, d'une période de une à deux heures sans être très efficaces. Cette technique ne s'emploie que sur certaines surfaces. Dans la présente invention (procédé pour rendre les leurres de pêc he luminescents) nous utilisons une substance chimique pour obtenir la luminescence. Ce mélan ge est inséré dans le leurre qui est plus ou moins transparent (selon le cas). Un tel procédé permet une luminosité 5 a 7 fois supérieur en intensité et duré. Le procédé peut s'appliquer au modèle de leurre populaire sans vraiment modifier leur aspect  d'origine.
Patent CA-2296316-A1 (CA)
Inventor: BYUN IL-SUK
IPC: C07B61/00
Filed: 1998-06-17
Abstract: The present invention relates to the process for the preparation of chiral 3,4-epoxybutyric acid expressed by formula (1) and the salt thereof, wherein (S)-3-activated-hydroxybutyrolactone as a raw material and other inexpensive reactants are utilized so as to undergo an efficient ring-opening reaction and epoxydation with an inversion of chiral center.
Patent CA-2298017-A1 (CA)
Title: Multiple functionalities within an array element and uses thereof
Inventor: MOYNIHAN KRISTEN
IPC: C12Q1/6837
Filed: 1998-07-21
Abstract: The present invention provides arrays of oligonucleotides on a solid substrate wherein a discrete area has at least two oligonucleotides with different sequences. These arrays are useful in hybrization assays, especially in conjunction with cleavable mass spectrometry tags.
Patent CA-2300299-A1 (CA)
Inventor: NYDAM KENNETH P
IPC: F02M25/07
Filed: 1998-10-05
Abstract: A valve assembly (10) for introducing exhaust gas into the intake manifold of an internal combustion engine, preferably, an electric exhaust gas recirculation valve assembly. The valve assembly (10) includes an actuator (16) having a centered solenoid assembly (18) that reciprocates a floating valve mechanism (14) to provide a substantially constant flow rate of exhaust gas regardless of the reciprocating direction of the floating valve mechanism (14). That is, the valve assembly (14) delivers a gas flow rate that is substantially free of hysteresis because the valve assembly provides substantially the same exhaust gas flow rate for a given percentage of a pulse width modulated duty cycle when the floating valve mechanism (14) is reciprocating in a valve opening direction or a valve closing direction.
Patent CA-2304614-A1 (CA)
Inventor: ROSENSTROM BO RICHARD
IPC: B65G27/32
Filed: 1998-12-01
Abstract: The control system is particularly usable with extended vibration conveyors and permits the installation of multiple vibratory drive units (18, 20) comprised of one or more vibratory modules. Each module comprises a motor (34, 42), one or more shafts (22, 24, 26) mounting eccentric weights (50, 52, 54, 56), and a shaft encoder device (58) monitoring the relative position of each shaft (22, 24, 26). One shaft, a master shaft, is driven continuously at a predetermined speed from which the actual relative positions of the shafts are compared.  A control device (68) is programmed with the predetermined relative shaft positions and receives signals from the various encoder devices (58) indicative of the actual relative positions of the shafts (22, 24, 26) and causes one or more motor control devices to alter the speed of each motor (34, 42) until the actual relative position essentially matches the programmed relative position.
Patent CA-2305452-A1 (CA)
Inventor: CERWALL CARL PATRIK
IPC: H04W72/04
Filed: 1998-09-29
Abstract: This invention relates to methods of initiating a reconfiguration of a cell regarding the number of signalling channels in relation to the number of traffic channels. Each signalling channel (SDCCH/8) contains a number of dedicated control channels (SDCCH). The invention can be divided into two parts, an increase condition in which a traffic channel (TCH) is converted to a signalling channel (SDCCH/8) and a decrease condition in which a signalling channel is reconverted to a traffic channel. These two conditions can be performed independently of each other. In the increase condition, the conversion to a signalling channel is done based on three conditions (1, 2, 3; Fig 3) depending on the number of idle dedicated channels (SDCCH) and the number of traffic channels (TCH).  In the decrease condition, the conversion (Fig 4; Fig 5) is based on the number of signalling channels (SDCCH/8) and the dedicated control channels (SDCCH) in the cell.
Patent CA-2306035-A1 (CA)
Title: Connector for electrical isolation in a condensed area
Inventor: ORTEGA JOSE L
IPC: H01R12/72
Filed: 2000-04-18
Abstract: A connector system having a header connector and a receptacle connector. The header connector has an array of pins. The modular receptacle connector comprises a ground receptacle contact that contacts adjacent mating surfaces of a pin, and a signal receptacle contact for engaging another pin.
Patent CA-2307995-A1 (CA)
Title: Mitigation of co-channel interference in synchronization bursts in a multi-beam communication system
Inventor: CASO GREGORY S
IPC: H04L7/00
Filed: 2000-05-10
Abstract: In a cellular satellite system such as Astrolink, where same frequency, same polarization (same "color") signals are used in multiple ground cells, there exists the possibility of interference and false reception of uplink Synchronization Bursts (SB) in systems employing TDMA access of the frequency in question. In such systems, a SB transmitted from one terminal may be received in more than one satellite beam. The reception of the signal from a terminal in an undesired beam (330) is erroneous and may adversely impact the time synchronization (360) of the desired terminal. For example, a system may employ Maximal Length (ML) Pseudo-Noise (PN) sequences (410) for its SBs wherein every beam may use the same sequence. To minimize false reception, the ML PN sequences (410) of each SB may be cyclicly shifted a different amount for each beam to generate sequences (410, 420) having low crosscorrelation with each other. By choosing ML PN codes having low crosscorrelation (410, 420) for the different beams, the interference from undesired beams may be minimized (530).