baber/WOPTO huggingface dataset:
Patent CA-2197931-A1 (CA)
Title: Nuclear magnetic resonance well logging apparatus and method adapted for measurement-while-drilling
Inventor: TAICHER GERSH ZVI
IPC: G01R33/563
Filed: 1997-02-19
Abstract: A nuclear magnetic resonance sensing apparatus including a magnet for inducing a static magnetic field in materials to be analyzed, the magnetic field having uniform field strength around, being substantially rotationally symmetric and perpendicular to a longitudinal axis of the magnet. The apparatus includes means for generating a radio frequency magnetic field in the materials to be analyzed. The radio frequency magnetic field is substantially rotationally symmetric about the longitudinal axis and is parallel to the longitudinal axis within a sensitive volume containing the materials to be analyzed.  The apparatus includes means for receiving a nuclear magnetic resonance signal from the sensitive volume. In a preferred embodiment, the means for generating and means for receiving include an antenna coil wound so that turns of the coil lie in planes perpendicular to the longitudinal axis of the magnet.
Patent CA-2199685-A1 (CA)
Inventor: WONG NELSON J
IPC: A61C5/42
Filed: 1997-03-11
Abstract: A set of endodontic cutting instruments, each having handles and each having a different working tip diameter incrementally increasing in size from one instrument to the next. The set includes a first smaller standard size endodontic cutting instrument having a grasping end with a first color according to a standard color code, a second larger standard size endodontic cutting instrument having a grasping end with a second color according to the standard color code and a non-standard intermediate size endodontic instrument having a size between the first smaller standard size and the second larger standard size and having a grasping end with a color combination including a first portion having the first standard color corresponding to the first smaller standard size and a second portion having the second standard color corresponding to the second larger standard size. Non-standard taper portions on the cutting instruments are provided to smooth stair step root canal cavities. The non-standard taper portions are identified by non-ISO color portions on the handles.
Patent CA-2201704-A1 (CA)
Title: Improved stretcher in calenders for tubular knitted fabrics
Inventor: MILANESE RENZO
IPC: D06C5/00
Filed: 1995-11-07
Abstract: The invention relates to a stretcher for tubular knitted fabrics comprising two separate stretcher arms (5, 6) bearing pulleys (23) in contact with belts (22) for carrying fabric (4), driven by drive wheels (11A, 11B) borne by supports (8) suitable to horizontally move in opposite directions and bearing pairs of support rolls (19, 20) with angled axle (21), each pair (19, 20) supporting on the opposite sides a ring (17) which has a particular profile, is idle on each arm (5, 6) and is in contact with each drive wheel (11A, 11B), wherein the above-mentioned pairs of rolls (19, 20) are motor-driven.
Patent CA-2202203-A1 (CA)
Title: Ultrasonic vibration cutter
Inventor: ISHII RYOICHI
IPC: B24B41/04
Filed: 1997-04-09
Abstract: There is disclosed an ultrasonic vibration cutter having one or more cutter components which can be conveniently replaced if necessary. There is provided an ultrasonic vibration cutter for cutting a workpiece with a cutter installed on a resonator which resonates with ultrasonic vibration having a predetermined frequency.      Since the cutter is installed at the minimum amplitude point or in the vicinity thereof, vibration in a cutting direction can be efficiently given to the cutter so that cutting can be carried out efficiently. The resonator has a large diameter portion and a male screw portion projecting coaxially from one end surface of the large diameter portion. The cutter, having a cutting blade on a disk-shaped peripheral portion thereof, is fitted onto the male screw portion, and a nut is fastened to the male screw portion projecting from this cutter to install the cutter detachably in such a manner that the cutter is located at the minimum vibration amplitude point of the resonator with the nut and the large diameter portion. The cutter can be fixed firmly with the fastening force of the nut.
Patent CA-2204231-A1 (CA)
Title: Endovascular device for protection of aneurysm
Inventor: RICHTER JACOB
IPC: A61F2/06
Filed: 1997-05-01
Abstract: A prosthesis for imparting structural integrity to a blood vessel having an aneurysm comprising a longitudinal member having an external surface, a first end, a second end, and an internal surface defining a longitudinal bore. The internal surface is provided with a constriction to increase the velocity of a fluid passing through the longitudinal bore. A plurality of apertures provide fluid communication between the external surface and the longitudinal bore at the constriction to cause a suction that will diminish the pressure within the aneurysmal sack.
Patent CA-2205047-A1 (CA)
Title: Method for coking coal
Inventor: CALDERON ALBERT
IPC: F27B5/14
Filed: 1995-11-03
Abstract: This invention discloses a new method for the production of coke from coals.  In the present invention, coke is continuously produced by heating a moving charge of coal inside the annular cross-section (13) defined by two concentric tubes (11, 12). The coking chamber (13), which includes a large diameter tube (11) and a concentric smaller diameter tube (12), is force fed with a coal such as metallurgical coal. The coal is bi-directionally heated along a controlled temperature gradient between the inner wall of the small diameter tube (12) and the outer wall of the large diameter tube (11). The coal is transformed to coke as it travels longitudinally along the axis of both tubes.  Coke is discharged from the chamber at the end opposite to which it was charged and is cooled before being exposed to the atmosphere. Gases generated during the coking process are collected and treated. All of these operations are accomplished in a closed system to prevent pollution.
Patent CA-2207754-A1 (CA)
Title: Medical coupling site valve body
Inventor: ATKINSON GORDON E
IPC: F16L29/00
Filed: 1996-01-16
Abstract: The present invention provides a medical coupling site (210) which is adapted to be directly attached to a standard male luer fitting. The coupling site includes a valve element (216) contained within a tubular housing (214). The housing (214) is provided with a threaded portion for engaging the threaded locking collar of a male luer lock whereby the male luer lock will be held in positive mechanical locking engagement with the coupling site (210). The valve element (216) is provided with rib members (244, 246) extending inwardly from an inner wall of the valve elements (216) toward a slit (236) formed in a diaphragm (234) such that the rib members (244, 246) act to bias the slit (236) to a closed position. The housing (214) includes a flange extending radially inwardly over the diaphragm (234) and defining a diameter for frictionally engaging a male luer in locking engagement. In addition, an exposed surface (249, 251) of the diaphragm (234) is formed with surface texturing to define a roughened surface (249, 251). The roughened surface (249, 251) reduces the surface friction between the diaphragm (234) and a male luer as the luer is inserted through the diaphragm (234).
Patent CA-2208561-A1 (CA)
Inventor: CLUZEL GUY
IPC: B60C9/18
Filed: 1995-12-08
Abstract: In order to enhance the fatigue strength of the tread reinforcement (3) of a tyre with an aspect ratio H/S of 0.6 or less, said reinforcement is formed with a triangulation ply (31) extending radially outwards, made of metal cables forming an angle of 60~ or more, with two working tread plies (32, 34) made of non extensible metal cables forming an angle of 10~ to 45~, between which is inserted an additional ply (33) of metallic elements substantially parallel to the circumference of said tyre.
Patent CA-2208979-A1 (CA)
Title: Plastic spring
Inventor: KOENIG HELMUTH
IPC: B65D83/04
Filed: 1995-12-21
Abstract: A plastic spring (1) consists of a spring tongue (4) attached to a spring support (2) by means of a web (3).      For adapting the spring characteristic to different condi-tions independent of the material, the web (3) is rigidly supported with respect to the spring support (2), and at least one auxiliary spring tongue (5, 6) parallel to the spring tongue (4) extends from the web (3) below the spring tongue (4).
Patent CA-2209219-A1 (CA)
Inventor: ABPLANALP ROBERT H
IPC: B65D83/62
Filed: 1996-01-11
Abstract: A dispenser comprising a valued aerosol container (22) and a unitary flexible barrier member (10) having a wall portion (12) terminating in a sealing portion (16).  The sealing portion (12) is joined to the container (22) in either a top seal or a bottom seal relationship. The wall portion (12) has first and second wall portions (14, 17). The second wall portion (17) terminates in a sealing flange (16). The wall portion (12) is steeply frusto-conical and sufficiently thick and rigid to be free-standing before incorporation into a container (22). The barrier member (10) is nestable with like barriers.
Patent CA-2210436-A1 (CA)
Title: Mold assembly for glass articles
Inventor: OLSON DUDLEY T
IPC: C03B11/06
Filed: 1997-07-14
Abstract: A mold assembly (10; 40) for molding a hollow glass article comprising a mold (12) that is made up of a separable pair of mold elements (12a, 12b; 42) and a mold holder (14; 44) that surrounds a portion of the mold of substantial axial length. The mold is separable from the mold holder, and the exterior of each mold segment is provided with a plurality of cooling fins (12e; 42e). The mold holder is made up of a separable pair of mold holder sections (16, 18; 46), and each mold holder section has a fluid flow passage (20; 50) extending therethrough. The fluid flow passage is radially open to permit fluid flowing therethrough to flow inwardly against the fins of an adjacent mold element. Each mold holder section has a perforated screen (26; 56) affixed thereto to vary the distribution of the flow of fluid from the mold holder section against the fins of the adjacent mold element.
Patent CA-2211293-A1 (CA)
Inventor: GAGNE MARC
IPC: A61K38/00
Filed: 1997-07-23
Abstract: The present  invention  relates  to  lysostaphin analogs having a molecular structure preventing post-translational    modifications    while    retaining lysostaphin-like biological activity. Such recombinant lysostaphin analogs have at least one modified site, or a rearrangement of at least one site at the level of the  amino  acid  sequence  of  the  mature  lysostaphin protein.  The invention also relates to DNA sequences encoding  the  lysostaphin  analogs,  and  recombinant plasmids  and  host  cells  for  the  expression  of recombinant lysostaphin analog.
Patent CA-2211402-A1 (CA)
Inventor: VERREAULT ERIC
IPC: G10L19/02
Filed: 1996-03-01
Abstract: Appareil de compression vocale s'utilisant dans le domaine de la téléphonie et comprenant un dispositif de décomposition d'un signal vocal en un groupe de signaux à bande de fréquence étroite, un estimateur servant à estimer le niveau d'énergie instantanée dans chaque bande, un comparateur qui compare le niveau d'énergie dans chaque bande à celui de toutes les autres bandes afin d'estimer le seuil d'audibilité du signal dans chaque bande, ainsi qu'un dispositif destiné à quantifier indépendamment le signal dans chaque bande en fonction du seuil d'audibilité estimé. L'appareil, selon l'invention, présente de faibles délais de traitement et des besoins réduits en puissance de calcul, et peut être utilisé dans des réseaux de télécommunications.
Patent CA-2211539-A1 (CA)
Title: Self flocculating separation medium and method
Inventor: RIEBER ROY S
IPC: B01D21/00
Filed: 1996-02-15
Abstract: Disclosed is a combined flocculating and clarifying medium for flocculating and separating solid particles from waste water comprising a mixture of solid filtering or aggregating particles and a dry flocculating agent effective to flocculate the solid particles to form larger and heavier aggregates with the filtering or aggregating particles in the waste water and filtering or gravity separating the formed aggregate from the waste water. Preferably, the filtering and aggregating particles are silicious particles, such as rice hull ash, diatomaceous earth, and perlite. The flocculating and clarifying medium can be combustible or can chemically fix the aggregated solid particles in a silicious cement, which solid particles can include heavy metal particles in silicious cement.
Patent CA-2215635-A1 (CA)
Title: Use of mannanases as slime control agents
Inventor: VAN SPEYBROECK MICHEL M P
IPC: C11D7/26
Filed: 1996-05-17
Abstract: The present invention relates to a composition for the prevention and/or removal of biofilm on surfaces comprising at least one mannanase, optionally in combination with at least one enzyme from the group consisting of carbohydrases, proteases, lipases, glycoproteases, and the use of the composition for the prevention and/or the removal of biofilm from surfaces.
Patent CA-2215838-A1 (CA)
Title: Shock resistant high efficiency vacuum cleaner filter bag
Inventor: ZHANG ZHIQUN
IPC: A47L9/14
Filed: 1996-03-27
Abstract: There is provided a vacuum cleaner bag (20) with high fine particle removal efficiency under normal and shock loading conditions, shock loading comprising a short term challenge with high particle concentrations (e.g., when a vacuum is used to pick up a pile of debris). The bag also exhibits high loading capacity without significant loss in pressure drop. The bag comprises an outer support layer (2), a fibrous layer (13) that is charged to create electrets, and an inner diffusion layer (14) that is substantially unbonded to the filter layer, except at necessary bag seams (25) required for assembly of the filter bag.
Patent CA-2216424-A1 (CA)
Title: A bed for a household pet
Inventor: MCALISTER JOHN B
IPC: A01K1/035
Filed: 1997-09-25
Abstract: The present invention is a cushion for a pet, preferably a cat, comprising a bed formed from a sheet comprising a plurality of layers of raw unwoven, uncovered polyester. Each layer comprises a solid first fiber and a second fiber that has a core and a sheath surrounding the core. The sheath has a lower melting temperature than the core. The sheet is then heated to the temperature, where the sheath of the second fiber melts and sticks to the adjacent fiber, whether a first or a second fiber, and is then cooled until the second fiber solidifies, attached to the adjacent fiber. The resulting material is a matted web of layered, electrostatic fibers that is subsequently cut into a right cylinder having a closed end of suitable size, such as large enough to accommodate a sleeping cat. The cylinder wall is then folded down on itself from its open end to form an annular upright wall having an inside layer and an outside layer, where the outside layer compresses the inside layer to form a more rigid wall.
Patent CA-2218774-A1 (CA)
Inventor: YOUNG RALPH C
IPC: B23B51/08
Filed: 1997-10-10
Abstract: There is a need for an efficient cutter to cut openings in drywall for electrical switch and outlet boxes.          Existing cutters typically press out an opening and consequently require great hand supplied force and use of a back plate which must be positioned behind the wallboard.          The invention discloses a chain driven electrical box cutter for cutting a rectangular opening in wallboard which comprises:  a housing having a rectangular chain track therearound;  a sprocket positioned centrally within the housing;  a shaft positioned within and secured to the sprocket having a cutting end projecting forwardly through the housing, and a drive end projecting rearwardly through the housing;  a loop of chain positioned within the track and on the sprocket so that it may be driven thereby, said chained carrying cutting teeth adapted to cut in a direction towards the front of the housing;  so that when the shaft is turned its cutting end cuts a guide hole in a wallboard, and its chain teeth thereafter cut a shape in the wallboard corresponding to the rectangular chain track.
Patent CA-2219876-A1 (CA)
Title: Stable variant hk2 polypeptide
Inventor: SAEDI MOHAMMAD S
IPC: A61P37/04
Filed: 1996-05-02
Abstract: An isolated nucleic acid molecule encoding a variant hK2 polypeptide is provided. Further provided is an isolated, purified variant hK2 polypeptide useful in preparing immunogenic compositions and vaccines.  Methods of employing the nucleic acid molecule or polypeptide of the invention are also provided.
Patent CA-2219877-A1 (CA)
Inventor: BUELOW ROLAND
IPC: A61P37/00
Filed: 1996-04-05
Abstract: On inhibe la progression de maladies auto-immunes en administrant des peptides présentant la séquence de domaines .alpha.1 d'antigènes de classe I du CMH. Ces fragments comprennent des acides aminés situés entre les positions 70 et 91 des antigènes de classe I du CMH. On réduit ainsi de manière significative, grâce à ce traitement, l'apparition du diabète sucré insulino-dépendant.
Patent CA-2222777-A1 (CA)
Title: Deck plank
Inventor: CASE GORDON M
IPC: E04C2/20
Filed: 1997-11-28
Abstract: A deck plank in the form of an elongated plastic channel having a mounting base, upright side walls terminating in cap engaging locking means and intermediate support means between the side walls, at least the upright side walls having a honeycomb structure, and a longitudinal generally planar plastic cap for closing the channel having edge formations adapted to engage and interlock with the side wall locking means. In its preferred form the entire channel is of a honeycomb structure, the channel wall cap engaging locking means are arcuate sockets and the cap edge formations are depending arcuate legs adapted to snap into the wall sockets.
Patent CA-2228085-A1 (CA)
Title: Article support
Inventor: MAHEU PATRICK R
IPC: A47B96/02
Filed: 1998-01-28
Abstract: An article support such as a shelf or a table top has a frame that, in its heated state, slidably receives a glass or plastic planar sheet into grooves along two opposing edges of the frame, until an end of the sheet abuts a third edge of the frame that joins the two opposing edges. The edges of the frame have lips that rest on a portion of the top surface of the sheet. When cooled, the frame contracts such that the edges of the sheet are tightly engaged within t:he grooves of the frame and the lips tightly abut the top Surface of the sheet, thereby creating an article support that resists spills around its periphery. The frame may be reheated to expand the material of the frame, permitting removal of the sheet from the frame. Thus, the frame and the sheet may be recycled.
Patent CA-2233774-A1 (CA)
Title: Convertible floating and sledding toy
Inventor: BENTLEY HARRY DOUGLAS
IPC: B63B35/73
Filed: 1998-05-29
Abstract: The invention provides a convertible toy for riding by at least one child while selectively floating on water and downhill sledding, the toy comprising: elongate hull means for buoyantly floating the toy and child riding thereon on a water surface, and for sliding the toy and child downhill on a frozen surface; and steering means housed within the hull for steering the direction of the toy by said child, the steering means including a common human interface portion releaseably connected with mounting means to an interchangeable contact portion, the contact portion being selected from the group consisting of: water propulsion means; and a ski. The water propulsion means comprises: a water jet nozzle mounted to the interface portion of the steering means; and a flexible hose, a first end releaseably connectable with the nozzle and a second end releaseably connectable to an external source of pressurized water. It is contemplated that commercial embodiments of the invention will include water propulsion means comprising velocity control valve means for manually controlling the flow of water to the water jet nozzle and the second end of the hose being releaseably connectable to the water filtration system of a swimming pool.
Patent CA-2234021-A1 (CA)
Title: Assembly of devices for building a green tyre for vehicles
Inventor: REGTERSCHOT MARTINUS
IPC: B29K103/00
Filed: 1997-02-07
Abstract: Assembly for building a green or non-vulcanized tyre for vehicles, such as passenger cars, the assembly being provided with two, separately drivable, building drums (13, 16), in line with each other, for the belt and the tread;  two carcass drums (40, 40') located parallel to each other, mounted on a common, rotatable shaft (39), the rotatable shaft being rotatable such that the one carcass drum (40) and the other carcass drum (40'), respectively, can be in line with the building drums; a first (14) and a second (19) transfer ring, both movably disposed on a transfer track (18), the first transfer ring (14) being movable between the belt building drums (13, 16) and the second transfer ring (19) being movable between the carcass drums (40, 40') and the closest building drum; a breaker ply servicer (30) and a cap ply unit (31) for supplying tyre components to a first building drum (13); a tread servicer (32) and a winding unit (15) for supplying tyre components to a building drum; a bead holding (27) and bead placing unit (21) and a carcass component servicer (29) for supplying tyre components to a carcass drum (22) in line with the building drums, a tread stitcher (28) for stitching an assembly of inter alia a breaker ply and tread against the carcass components provided on a carcass drum (22) in line with the building drums for forming a green tyre; and a removing unit (20) for removing the green tyre from the second transfer ring.
Patent CA-2236381-A1 (CA)
Inventor: WONG LUET-LOK
IPC: C12N15/09
Filed: 1996-11-01
Abstract: Cette invention se rapporte à un mutant de la cytochrome mono-oxygénase P-450cam dans lequel on a supprimé le reste cystéine en position 334.
Patent CA-2239524-A1 (CA)
Inventor: YOON SOON-YOUNG
IPC: H04B1/707
Filed: 1998-06-01
Abstract: L'invention est une méthode servant à assurer un service de transmission de données dans un système de communication comportant un canal de trafic direct incluant un canal fondamental et un canal supplémentaire. La puissance d'émission totale d'une station de base est détectée et, en cas de complémentarité, une donnée de référence est transmise sur une liaison directe par l'intermédiaire d'un canal complémentaire prédéterminé. La donnée complémentaire est reçue de la liaison directe et est traitée dans un terminal.
Patent CA-2240708-A1 (CA)
Inventor: BOUVIER CHRISTIAN
IPC: B61B11/00
Filed: 1996-12-10
Abstract: Un dispositif de traînage de skieurs (13), sur des zones à faible pente, comporte une corde (10) à défilement continu, dont le brin de traînage (14) repose et glisse sur la surface (15) de la neige et dont le brin de retour (19) est maintenu en hauteur par des pylônes de ligne (26). Un dispositif de sécurité (36) provoque l'arrêt de l'installation si un skieur ne lâche par le brin de traînage (14) à temps à l'arrivée.
Patent CA-2243709-A1 (CA)
Title: Rolling mill
Inventor: THOMAS JOHN E
IPC: B21B13/14
Filed: 1997-01-22
Abstract: A rolling mill of the present invention includes a mill stand (11) formed by two spaced apart housings (12, 14). The housings are configured to rotatably hold one of at least two sets of rolls. A hold-down assembly (24) is coupled to the housings. The hold-down assembly includes at least a first pair of holddown screws (26, 26') and a second pair of hold-down screws (28, 28'). The distance between the screws of the first pair of hold-down screws is less than the distance between the screws of the second pair of hold-down screws. Each pair of hold-down screws is selectively adapted to subtantially align with the bearing chocks of an adjacent roll of one of the sets of rolls in the mill stand.