baber/WOPTO huggingface dataset:
Patent CA-2201765-A1 (CA)
Title: Fluid leak detector mechanism
Inventor: LAMB MARK EDWARD
IPC: G01M3/32
Filed: 1997-04-03
Abstract: A fluid leak detector mechanism having a main fluid tank an expansion tank for receiving fluid therefrom as the fluid becomes heated and expands and a sensing chamber operatively coupled with the main tank. A signalling mechanism signals to an operator when the level of fluid in the sensing chamber has dropped significantly to alert the operator of the presence of a leak. An oil return valve is operatively coupled between the main tank and the expansion tank and has an open position that allows fluid to flow back to the main tank from the expansion tank and a closed position that blocks oil from flowing from the expansion tank to the main tank. A temperature sensor senses the temperature of fluid. A control mechanism shifts the oil return valve to its open position when the temperature sensor detects a significant drop in fluid temperature thereby allowing the fluid levels to be reset with changes in fluid temperature.
Patent CA-2202361-A1 (CA)
Title: Fluid treatment system
Inventor: CHURCH GARRY
IPC: C02F1/52
Filed: 1995-10-13
Abstract: It is known to use a streaming current detector (SCD) in a system for monitoring the charge condition of a sample fluid and for controlling the addition of a flocculating/coagulating agent to the fluid. It is further known to arrange the SCD to monitor a sample taken from the fluid supply, and to connect the SCD in a feedback loop to directly control the dosing of the flocculating agent into the fluid supply. Difficulties arise in complex systems, and improper control over flocculant dosing results from the effect of dosing adjustment being overshadowed by other charge-varying influences. The invention proposes a solution in which a secondary feedback loop involving dosing of a chemical (which may be the same as that added to the main supply) into the sample supply is provided aroung the SCD itself. In this way, the corrective effect of the secondary dosing is not overwhelmed by the other influences.
Patent CA-2203107-A1 (CA)
Inventor: DU REES STEPHAN
IPC: B62B5/04
Filed: 1996-09-03
Abstract: L'inventon concerne un dispositif de freinage (1) pour fauteuil roulant, comprenant au moins deux jambes de freinage (2, 3) qui peuvent être abaissées ou montées par rapport à une sous-structure, tout en étant guidées dans leur mouvement par des éléments tubulaires (4, 5) fixés au cadre de la chaise, ces mouvements verticaux des jambes étant provoqués par des moyens de sollicitation (6, 7) situés au-dessus des jambes de freinage respectives, les moyens en question effectuant un mouvement de rotation grâce à un arbre (8) auquel ils sont fixés, ce mouvement dans une direction assurant l'arrêt de la chaise grâce au mouvement descendant des jambes (2, 3) vers leur position de freinage et le mouvement dans la direction opposée provoquant un mouvement ascendant des jambes vers leur position inactive. Le moyen de sollicitation comprend des cames (9; 10) dont l'axe de rotation (11) coïncide avec l'axe longitudinal de l'arbre (8) auquel elles sont fixées, les profils (12; 13) de ces cames ayant la forme d'un S allongé, et coopère avec les parties supérieures (16, 17) des jambes pour soulever au maximum les extrémités libres (14, 15) des jambes.
Patent CA-2203552-A1 (CA)
Title: Modified sol-gel alumina
Inventor: GARG AJAY K
IPC: C04B35/111
Filed: 1995-08-30
Abstract: Alpha alumina abrasive grits with grain boundaries modified with at least one of yttria and a rare earth metal oxide, and one or more oxides selected from the oxides of magnesium and/or transition elements, perform at enhanced levels if at least the yttria and/or rare earth metal oxide modifiers are present within the body of the grit in concentrations at least as high as their concentrations at the surface of the grit.
Patent CA-2205248-A1 (CA)
Title: Hybrid fiber-coax system having at least one digital fiber node and increased upstream and downstream bandwidth
Inventor: DAIL JAMES E
IPC: H04N7/173
Filed: 1997-05-13
Abstract: Increased upstream bandwidth and reduced ingress noise in a shared hybri d fiber-coax transmission system (100) are obtained by modulating at least a portion of upstream signals received from subscribers to a high frequency band (e.g., 750-1000 MHz), thereby increasing the upstream bandwidth. The high frequency upstream signals are then digitally regenerated in the coaxial cable (200) plant prior to receipt at a  fiber node (180). At the fiber node, the high-frequency upstream signals are again digitally regenerated and are then transmitted optically in a baseband digital format between the fibe r node (180) and a head end ( 120). The digital regeneration of the high frequency upstre am signals, and the optical transmission of such signals in a baseband digital format reduces the incidence of ingress noise.
Patent CA-2207927-A1 (CA)
Title: Packaging cell lines for generation of high titers of recombinant aav vectors
Inventor: ALLEN JAMES M
IPC: C07K14/47
Filed: 1995-12-06
Abstract: AAV vectors may have utility for gene therapy but heretofore a significant obstacle has been the inability to generate sufficient quantities of such recombinant vectors in amounts that would be clinically useful for human gene therapy application. Stable AAV packaging cell lines have been elusive, mainly due to the activities of Rep protein, which down-regulates its own expression and can negatively affect the host cell. This invention provides packaging systems and processes for packaging AAV vectors that effectively circumvent these problems and that allow for substantially increased packaging efficiency.
Patent CA-2210176-A1 (CA)
Title: Lenticular optical system
Inventor: ROSENTHAL BRUCE A
IPC: G02B30/27
Filed: 1996-01-17
Abstract: A lenticular optical system is described in which a composite image formed by combined image strips (88) is viewable through a lens sheet (80) from a first angle and an object or image (74) is viewable from a second angle. Optical designs and alignment processes are disclosed which make possible the economical production of thin materials which facilitate the manufacturing and utilization of the optical system in packaging and the like.
Patent CA-2212209-A1 (CA)
Inventor: BERFIELD ROBERT C
IPC: A01D34/416
Filed: 1996-06-04
Abstract: A rotary flail feeding device includes a head (12) having an annular line storage cavity (46), a central post (34) and an annular line feeding passage (78) extending radially inwardly from the cavity to an annular outlet opening (76) at the end of the post. A coil of flail line is wound in the cavity and extends inwardly through the passage, around the post and out the opening. The device automatically shortened flails.
Patent CA-2212552-A1 (CA)
Title: Hepatitis b vaccine
Inventor: GARCON NATHALIE MARIE-JOSEPHE
IPC: A61K39/295
Filed: 1996-02-15
Abstract: A novel vaccine formulation is provided, compromising a hepatitis B component, particularly hepatitis B surface antigen, in combination with aluminum phosphate and 3 de-O-acylated monophosphoryl lipid A.
Patent CA-2212743-A1 (CA)
Title: Open hole straddle system and method for setting such a system
Inventor: SERAFIN VITOLD P
IPC: E21B33/124
Filed: 1996-12-04
Abstract: A set of inflatable well packing elements (11, 13) are separated by a variable length of tubing and are set in a well to isolate a segment of the annulus by applying fluid under pressure through a tubing string to the well packing elements. The flow of the fluid under pressure to the inflatable packing elements is regulated by a flow control valve (10) which automatically cuts off the fluid flow at a predetermined tubing to annulus pressure differential and opens communication between the tubing string (96) and the isolated well zone. Fluid may thereafter be pumped into or swabbed from the isolated zone. Upon completing the zone servicing, pulling the tubing string up slightly will both equalize the pressure across the inflatable packing elements, and deflate the packing elements. Thereafter, the tubing string may be retrieved from the well or, if desired, moved to another location which can be serviced in the same manner.
Patent CA-2215561-A1 (CA)
Title: Covered sample well for use in nucleic acid assays and immunoassays
Inventor: LAWRENCE NATHAN P
IPC: B01L3/00
Filed: 1997-09-15
Abstract: An improved sample well is provided for carrying out a biological or chemical process, such as a nucleic acid assay or an immunoassay, on a liquid sample. The sample well includes a cap with a restricted aperture sufficient in size to receive the distal end of a disposable pipette tip. The pipette tip is initially inserted into the aperture to introduce a liquid sample into the sample well, and is allowed to remain within the aperture while the sample reacts with a reagent contained within the sample well. In this way, the pipette tip effectively closes off the sample well while the reaction is taking place, thereby reducing evaporative loss of the sample and avoiding cross-contamination with samples contained in adjacent sample wells. The sample wells may also be constructed of, or include therein, different materials which perform different functions in the biological or chemical process, thereby permitting assembly of different groups of sample wells for different assay formats.
Patent CA-2217448-A1 (CA)
Inventor: HAMILTON RICHARD J
IPC: B05B15/00
Filed: 1997-02-27
Abstract: A quick disconnect nozzle comprising a nozzle body, a spray tip, and an annular sealing member interposed therebetween. The tip is adapted to be inserted axially into the body and then rotated. When the tip is rotated, camming lugs on the tip and body coact to draw the tip axially toward the body and compress the sealing member. Detents in the form of flexible curved ribs are carried by the tip and resiliently pop into curved pockets in the body to releasably hold the tip in its installed position. The sealing member is an O-ring which is carried by the tip and which is removable from the body as a unit with the tip. An inner seal is provided between mutually converging tapered walls of the nozzle tip and nozzle body adjacent the inner end portion of the nozzle tip.
Patent CA-2217705-A1 (CA)
Inventor: ZAVARTSEV JURY DMITRIEVICH
IPC: H01S3/16
Filed: 1997-02-14
Abstract: The invention pertains to quantum electronics and is useful for developing materials for laser techniques for use in solid state lasers with emitting wavelength of between 2.8 microns to 3.1 microns.   The technical problem addressed by the invention is that of raising the gain of laser material, lowering the generation stimulation threshold, increasing the generation efficiency and widening the available range of industrial generating systems with continuously variable emission wavelengths in the range 2.8 microns -3.1 microns, including those operating in short-pulse generation and amplification modes. The invention is also aimed at preventing fissures forming in the crystal, reducing scattering, improving radiation durability, decreasing dissipation and reducing passive absorption in specific embodiments.   The laser material has a garnet structure and contains between 0.025 formula units (f.u.) and 2.95 f.u. of holmium and in addition at least one of the following elements: Li, Be, B, Na, Ca, Mg, Si, K, Ti, V, Mn, Fe, Co, Ni, Cu, Zn, Ge, Rb, Sr, Zr, Nb, Mo, W, Ta, Hf, Bi in quantities of between 1 x 10 17 cm-3 to 5x10 20 CM-3.
Patent CA-2221087-A1 (CA)
Title: Diesel fuel and dispersant compositions and methods for making and using same
Inventor: MALFER DENNIS J
IPC: C10L1/14
Filed: 1997-11-13
Abstract: A diesel fuel additive composition comprising a mixture of a dispersant and a carrier, preferably a liquid carrier fluid. The dispersant comprises at least one member of the group consisting of polyalkylene succinimides and polyalkylene amines, the polyalkylene succinimides being the reaction product of polyalkylene succinic anhydride and a polyamine, the polyalkylene amine being the reaction product of a polyalkylene moiety and amine selected from the group consisting of monoamine and polyamine. The carrier comprises at least one oxygenate selected from the group consisting of polyalkoxylated ether, polyalkoxylated phenol, polyalkoxylated ester and polyalkoxylated amine. The additive composition reduces injector deposits in internal combustion-compression ignition engines. Diesel fuels containing a major portion of a hydrocarbon-based compression ignition fuel and a minor portion of the diesel fuel additive composition, as well as methods of making and using these diesel fuels are also included in the present invention.
Patent CA-2222130-A1 (CA)
Title: Radial intrastromal corneal insert and a method of insertion
Inventor: PROUDFOOT ROBERT A
IPC: A61F9/00
Filed: 1996-06-07
Abstract: The subject invention relates to an intrastromal corneal insert designed to be meridionally situated in an interlamellar pocket or channel made within the cornea of a mammalian eye. The insert has a shape which, when inserted into the cornea, has a significant meridional dimension and may be used to adjust corneal curvature and thereby correct or improve vision abnormalities such as hyperopia. The inserts may also have a cirumferential component to their configuration to allow concurrent correction of other vision abnormalities. The radial insert may be made of a physiologically compatible material, e.g., one or more synthetic or natural, soft, firm, or gelatinous polymers. In addition, the insert or segment may be used to deliver therapeutic or diagnostic agents to the corneal interior or to the interior of the eye. One or more of the radial inserts of this invention typically are inserted into the cornea so that each subtends a portion of the meridian of the cornea outside of the cornea's central area, e.g., the area through which vision is achieved, but within the cornea's frontal diameter. Typically, the insert is used in arrays of two or more to correct specific visual abnormalities, but may be used in isolation when such is called for. The invention also includes both a minimally invasive procedure for inserting one or more of the devices into the cornea using procedures beginning within the cornea as well as procedures beginning in the sclera.
Patent CA-2223018-A1 (CA)
Inventor: MILLER LARRY
IPC: H04N7/173
Filed: 1996-06-06
Abstract: An electronic program schedule system having virtual channels which includes  a receiver for receiving broadcast, satellite or cablecast television programs  for a plurality of television channels and a tuner for tuning a television receiver to a selected one of the plurality of channels. A data processor receives and stores in a memory television program schedule information for a plurality of television programs to appear on the plurality of television channels. A user control apparatus, such as a remote controller, is utilized  by a viewer to choose user control commands and transmit signals in response  to the data processor which receives the signals in response to user control  commands. A television receiver is used to display the television programs a nd virtual channel programming. A video display generator receives video contro l commands from the data processor and generates and displays a plurality of virtual channels, each virtual channel being accessible as a channel and associated with a service delivered on a subset of the channels.
Patent CA-2223733-A1 (CA)
Inventor: KUNSCH CHARLES A
IPC: A61P27/02
Filed: 1995-06-05
Abstract: L'invention concerne un facteur de croissance dérivé de l'hépatome humain et l'ADN (ARN) codant ce polypeptide, ainsi qu'un procédé pour produire ledit polypeptide par des techniques de recombinaison. L'invention concerne également des procédés d'utilisation desdits polypeptides pour la stimulation de la réparation et la croissance des tissus. L'invention concerne également des antagonistes de ces polypeptides et leur utilisation thérapeutique pour retarder la croissance de tumeurs et favoriser la cicatrisation. L'invention concerne également des méthodes diagnostiques pour détecter les mutations dans la séquence de codage et les modifications de la concentration de polypeptides dans un échantillon prélevé sur un hôte.
Patent CA-2223916-A1 (CA)
Inventor: DE BOCK JAN JULIEN IRMA
IPC: B41J27/16
Filed: 1997-12-05
Abstract: The toner image (500) is heated to a temperature sufficient to reduce the viscosity thereof to less than 50 Pa s.  The transfer member (594) carrying the toner image (500) is brought into contact with the substrate (541).  The transfer member (594) is forcibly cooled to a temperature below the glass transition temperature Tg of the toner while the transfer member (594) remains in contact with the substrate (541).  Thereafter the transfer member (594) is separated from the substrate (541).
Patent CA-2225028-A1 (CA)
Title: Sanitary articles with dual layer topsheet having a selected distribution of large apertures
Inventor: DIVO MICHAEL
IPC: A61F13/15
Filed: 1996-05-17
Abstract: The present invention relates to absorbent articles particularly sanitary napkins having layered topsheets. In particular a first layer receiving the liquids to be absorbed comprises aperture of at least 1.4 mm2 area in a film.  Theses large apertures provide exceptionally good liquid intake performance for the absorbent article. A second layer provides a liquid receiving volume reservoir by having and resiliently maintaining a minimum thickness of 0.3 mm.  Additionally the second layer provides visual masking of absorbent liquids in the area of the large apertures of the first topsheet layer.
Patent CA-2225968-A1 (CA)
Inventor: LLORENS JAIME FERRI
IPC: A63H3/20
Filed: 1997-12-24
Abstract: The doll has the peculiarity that the movement towards the right or towards the left of one of its arms carries with it the same movement of the head and also of the eyes.      Likewise, the movement upwards or downwards of the arm carries with it the movement upwards and downwards of the head. Both movements can be made in combination, whereby any object (dummy, feeding bottle or similar) held in the hand of the driven arm, is carried towards the upper-front part, in such a way that if it is a feeding bottle this one is applied to the mouth of the doll and a miction of the doll is produced. Such movements are achieved as a consequence that the driven arm and the head are assembled on the body of the doll, through both ball joints, existing a series of levers, axles and forks as means of transmission of the movements of a main lever associated to the ball joint of the arm, up to the ball joint itself of the head. Fig. 1.
Patent CA-2230252-A1 (CA)
Title: Improved comfort melamine fabrics and process for making them
Inventor: BURLONE DOMINICK A
IPC: D06M101/16
Filed: 1998-03-30
Abstract: Fabrics made of melamine fibers are made more comfortable by submerging them for at least 20 minutes in a dyebath or mock dyebath that is at least 70°C.
Patent CA-2231494-A1 (CA)
Title: Self-forming socket
Inventor: MARKS JOEL STEVEN
IPC: B25B13/10
Filed: 1996-10-10
Abstract: A self-forming socket having a plurality of retractable pins (16) bundled in parallel within a housing (20). The bundled pins may displace longitudinally and are biased by spring force away from a frame (20) on which the pins are slidably held. A spacer pin (30) may be positioned at the centre of the socket and is similarly biased away from the frame under spring force. When the socket is forced over a fastener, nut, or bolt head, groups of pins are pushed inwards towards the frame and into the housing thereby conforming the pins to the contours of the fastener. Each pin has a circular cross section and the interior walls of the housing containing the bundled pins has a hexagonal shape and does not contain any right angles. The pins are packed in a hexagonal arrangement.
Patent CA-2231650-A1 (CA)
Inventor: YATABE TOSHIAKI
IPC: G02B5/02
Filed: 1997-08-04
Abstract: A film of the present invention is an oriented film having a light-scattering property varying with an incident angle and is useful e.g. as a viewing angle improvement film effective for improving the picture quality of a liquid crystal display device, especially for expanding the viewing angle. This oriented film is composed of a thermoplastic polymer and contains a number of micro voids participating in the above scattering property in the film. It can be produced by uniaxially drawing a film composed of a thermoplastic polymer under temperature and draw-ratio conditions to form grooves on the surface of the film perpendicular to the drawing direction.
Patent CA-2232177-A1 (CA)
Title: Aluminium matrix composite material and process of producing same
Inventor: FEIKUS FRANZ JOSEF
IPC: C22C49/14
Filed: 1998-03-16
Abstract: The invention relates to  an aluminium matrix composite material consisting of a porous fibre preform which is embedded in an aluminium alloy and which has a higher strength and an improved wear behaviour as compared to the aluminium matrix, wherein the fibre preform consists of  a  shaped  fibre member which  comprises  a metallic and/or intermetallic structure and into which there is infiltrated a silicon-containing aluminium alloy melt, with the Si-content of the melt amounting to 5 - 14 % by weight. Furthermore, the invention relates  to a process of producing an aluminium matrix composite material which consists of a porous fibre preform infiltrated   with  an aluminium alloy.
Patent CA-2232420-A1 (CA)
Inventor: HIRAO YUTAKA
IPC: C07K1/36
Filed: 1998-03-18
Abstract: An  immunoglobulin  preparation  comprising  an immunoglobulin, wherein the preparation contains, as a contaminant, serum albumin in an amount not greater than 10 µg per 50 mg of immunoglobulin; and/or wherein said preparation is free of fine particles which can serve as a nucleus of insoluble foreign matter, and processes for preparing the immunoglobulin preparation are described.
Patent CA-2234815-A1 (CA)
Title: Rubber composition and tire having tread thereof
Inventor: ZIMMER RENE JEAN
IPC: C08K5/00
Filed: 1998-04-16
Abstract: A rubber composition comprised of elastomer(s), carbon black reinforcement and coupling agents. In one aspect, a modified carbon black may be used.          A tire having a component of such rubber composition such as, for example, a tread, is also provided.
Patent CA-2235935-A1 (CA)
Inventor: RHODES NEIL
IPC: G06Q10/06
Filed: 1998-04-27
Abstract: L'invention est un système d'ordonnancement informatisé qui utilise des données de définition d'activités pour ordonner les opérations d'un matériel. La méthode d'ordonnancement de l'invention peut être utilisée dans un système informatisé à réseau qui reçoit des données de définition représentant une activité, telle qu'une partie de volley-ball ou une réunion d'un conseil d'administration, qui se déroule dans un immeuble. Ces données sont stockées dans une base de données et sont utilisées par une multiplicité de noeuds. Les données de définition d'activité peuvent être constituées de données textuelles ou graphiques qui donnent le nom de l'activité, de données représentant une liste de zones touchées par l'activité et de données représentant le mode de fonctionnement possible de chaque zone de l'immeuble touchée par l'activité en cause. La méthode de l'invention ajoute aux données d'activité des données de mode de zone qui sont utilisées pour contrôler automatiquement les ressources disponibles dans l'immeuble afin de réaliser le mode de fonctionnement affecté aux données de définition de l'activité.