baber/WOPTO huggingface dataset:
Patent CA-2179457-C (CA)
Title: Method and apparatus for measuring a liquid level using a liquid level gauge having reed switches to determine the position of a magnetic float
Inventor: FRASER GEORGE DAVID
IPC: G01F23/76
Filed: 1996-06-19
Granted: 2000-08-29
Abstract: A method and apparatus for measuring a liquid level using a liquid level gauge having reed switches to determine the position of a magnetic float. Firstly providing an elongate float having an axial bore defining a longitudinal axis. The float has a plurality of magnets axially spaced along the longitudinal axis to form magnetic layers. Secondly, providing a tube having a first end and a second end. A plurality of magnetically activated reed switches are equally axially spaced from the first end to the second end. The tube extends through the axial bore of the float. Thirdly, determining which of the plurality of magnetically activated reed switches have been activated by the axially spaced magnetic layers of the float and interpolating float position in relation to the activated reed switches.
Patent CA-2181051-C (CA)
Title: Warming blanket for pediatric use
Inventor: METZLER PHILIP M
IPC: A61F7/02
Filed: 1995-01-25
Granted: 2009-04-07
Abstract: The present invention relates to a blanket (10) for use with forced air convection systems, wherein the blanket (10) is sized to accommodate pediatric patients The blanket (10) according to the present invention may be used both over and under the patient, thereby facilitating use in the operating room or outside of the operating room. The present invention also relates to a blanket (10) for use with forced air convection systems which is non-flammable and laser resistant. In addition, the present invention relates to methods of prevention of hypothermia and hyperthermia and to a method of making a blanket for use with forced air convection systems.
Patent CA-2185266-C (CA)
Inventor: TAO LIANG-CHE
IPC: A61B17/42
Filed: 1996-09-11
Granted: 2007-10-23
Abstract: A uterine endometrial tissue sample brush includes a flexible core having a distal core end and a cylindrical brush member carried adjacent the distal core end. The core is formed from a spirally wrapped pair of wires and includes an atraumatic tip. The brush member is about 3 to 5 cm long and has a free outside diameter, preferably about 5.08 to 7.62 mm (0.2 to 0.3 in.), suited to maintain patient comfort yet comprehensively contact the undilated uterine canal. The brush member includes a plurality of resilient bristles axially spaced about 0.5 .to 1.5 mm apart. The bristles have a stiffness equivalent to that possessed by nylon-6,12 at a diameter of about 0.076 to 0.152 mm (0.003 to 0.006 in.). This stiffness is critical and unexpectedly gives the brush good exfoliating and collecting abilities simultaneously, in contrast to prior devices which may possess either good exfoliating or good collecting abilities, but not both abilities at the same time. The bristles are preferably composed of nylon-6,12 of about 0.127 mm (0.005 in.) diameter, and are retained between the pair of wires so that they are spirally arrayed. The brush also preferably includes a flexible sheath adapted to slidably receive the core and brush member therein, to prevent the collection of undesired exocervical or vaginal fluid or material during introduction or removal of the brush. The brush especially useful for routinely and repeatedly collecting samples for cancer screening or for monitoring ongoing estrogen replacement therapy.
Patent CA-2191759-C (CA)
Inventor: SCHNABEL GERHARD
IPC: C07D251/12
Filed: 1995-05-17
Granted: 2006-10-31
Abstract: Compounds of the formula (I) (see formula I) is which R1 is H, a substituted or unsubstituted hydrocarbon radical or an unsubstituted or substituted heterocyclic radical, R2 is H, (C1-C6)-alkyl or (C1-C6)-alkoxy, R3 is halogen, (C1-C6)-alkyl. (C1-C6)-alkoxy, (C1-C6)-haloalkyl, (C1-C6)-haloalkoxy, NO2, CN, NH2, (C1-C4)-mono- or dialkylamino, each independently of other radicals R3 if n is 2 or 3, n is 0, 1, 2 or 3, W is an oxygen atom or a sulfur atom, X and Y independently of one another are halogen, (C1-C6)-alkyl, (C1-C6)-alkoxy or (C1-C6)-alkylthio, each of the three last-mentioned radicals being unsubstituted or substituted by one or more radicals selected from the group consisting of halogen, (C1-C4)-alkoxy and (C1-C4)-alkylthio, or are (C3-C6)-cycloalkyl, (C2-C6)-alkenyl, (C2-C6)-alkynyl, (C2-C6)-alkenyloxy, (C2-C6)-alkynyloxy, mono- or di[(C1-C4-alkyl)]amino, and Z is CH or N, are suitable as herbicides and plant growth regulators.      The compounds (I) can be prepared by processes of claim 4 [lacuna] 7, it being possible to use novel sulfonamides (II).
Patent CA-2197653-C (CA)
Inventor: WHITTAKER ROBERT
IPC: C12N15/09
Filed: 1995-08-16
Granted: 2009-04-28
Abstract: The present invention provides a method for in-troducing nucleic acids into cells. The method involves exposing the cells to a compound having formula (1), in which w is a nucleic acid, x is a peptide or amino acid, y is a linker having a chain length equivalent to 1 to 20 carbon atoms or is absent, R4 is H or CH2O - R3; and R1, R2 and R3 are the same or different and are either hy-drogen, methyl, ethyl, hydroxyl or an acyl group derived from a fatty acid having a carbon chain of 3 to 24 carbon atoms saturated or unsaturated, with the proviso that at least one of R1, R2 and R3 is an acyl group derived from a fatty acid, or to a compound having the formula (2): w.....xy NHCH2CH2OR5, in which w is a nucleic acid, x is a peptide or amino acid, y is a linker having a chain length equivalent to 1 to 20 carbon atoms or is absent, R5 is an acyl group derived from a fatty acid having a carbon chain of 3 to 24 carbon atoms saturated or unsaturated. The invention also relates to these compounds.
Patent CA-2200798-C (CA)
Inventor: WOODGATE RAYMOND MAXWELL
IPC: B07B1/46
Filed: 1997-03-24
Granted: 2005-11-29
Abstract: A shielding device 23, 24, in apparatus 1 for screening ore or like material comprises an elongate body portion 25 for location over the top surface 7 of a support beam 3 of a support frame for screen panels 6. The shielding device includes at least one skirt 26 projecting from a side of the body portion 25.  The device is locatable between the screen panels 6, a fixing member 13 for the screen panels and the beam 3 and provides a surface 27-27a for collecting fines material that ingresses between the screen panels 6 and fixing member 13 and deflecting it away from the beam 3. Use of the shielding devices reduces wear on the support beams 3 due to the abrasive fines material. The shielding devices are consumable items and can be replaced.
Patent CA-2204420-C (CA)
Inventor: MURPHY MICHAEL T
IPC: E04H3/04
Filed: 1997-05-02
Granted: 2005-09-20
Abstract: A drive-through window station of a restaurant has a food preparation area adjacent a food preparation viewing window. A driveway exterior the window positions a customer in a vehicle at an enhanced elevation whereby the customer may look inward and downward to view and direct the food selection, preparation and packaging by continuous communication using one or more spaced two-way speaker-microphones units. A canopy over the driveway enables proper lighting to view the interior food preparation. Sensor activated lighting increases the interior and/or exterior illumination when a vehicle enters the driveway, and decreases the interior and/or exterior illumination when a vehicle exits the driveway.
Patent CA-2205596-C (CA)
Inventor: CARR IAN T
IPC: E21C25/10
Filed: 1995-10-10
Granted: 2000-07-18
Abstract: A mining apparatus (10) includes a frame (12), a mechanism for cutting (16) an arched opening in a seam and winning the cut mineral, and a propulsion system (14, 15). The cutting mechanism (16) includes a boom (20) supported mineral cutting drum (18) having a barrel or bulging cylindrical shape. The propulsion system (14) is canted on the frame (12) at an angle from the horizontal in order to match the floor of the arched opening being cut by the drum (18).
Patent CA-2206346-C (CA)
Title: Contoured-tub fermi-threshold field effect transistor and method of forming same
Inventor: DENNEN MICHAEL WILLIAM
IPC: H01L29/08
Filed: 1995-12-05
Granted: 2007-08-07
Abstract: A Fermi-threshold field effect transistor includes a contoured-tub region of the same conductivity type as the source, drain and channel regions and having nonuniform tub depth. The contoured-tub is preferably deeper under the source and/or drain regions than under the channel region. Thus, the tub-substrate junction is deeper under the source and/or drain regions than under the channel region. The diffusion capacitance is thereby reduced compared to a tub having a uniform tub depth, so that a high saturation current is produced at low voltages. The contoured-tub may be formed by an additional implant into the substrate using the gate as a mask.
Patent CA-2212285-C (CA)
Title: Start-up control method for a fluidized-bed polymerization process
Inventor: TAPLEY STEPHEN ALLEN
IPC: C08F2/34
Filed: 1996-12-23
Granted: 2007-02-13
Abstract: The present invention relates to a start-up process of a continuous gas fluidised bed process for the polymerisation of olefin monomer selected from (a) ethylene, (b) propylene, (c) mixtures of ethylene and propylene, and (d) one or more other alpha-olefins mixed with (a), (b) or (c), in a fluidised bed reactor by continuously recycling a gaseous stream comprising at least some of the ethylene and/or propylene through a fluidised bed in the reactor in the presence of a polymerisation catalyst under reactive conditions, cooling at least part of the gaseous stream withdrawn from the reactor to a temperature at which liquid condenses out, separating at least part of the condensed liquid from the gaseous stream, and introducing at least part of the separated liquid directly into the fluidised bed using a liquid injection means, characterised in that at least part of the gaseous recycle stream by- passes the hereabove cooling/condensing/separating steps, and is reintroduced as the recycling gaseous stream passing through the reactor. The present process provides improved levels of productivity, and the use of the by-pass stream achieves fine control over otherwise deleterious fluctuations in the reactor temperature during start-up.
Patent CA-2217038-C (CA)
Inventor: BIEGEL CHARLES H
IPC: H04L12/56
Filed: 1996-11-29
Granted: 2001-09-25
Abstract: In a mobile satellite system, a system for providing satellite communication between multiple users in a virtual network arrangement includes first and second mobile earth terminals (METs) responsively connected to and registering with the mobile satellite system. The first MET selects a virtual network identifier (VN ID) representing a virtual network group including the first and second METs to establish voice communication therewith and transmits the VN ID to a central controller. The central controller receives the VN ID from the first MET, validates the first MET for communication, validates the VN ID, allocates a frequency for the virtual network group, and broadcasts the message to the virtual network group including the second MET informing the virtual network group of the allocated frequency and the voice communication associated therewith.      The second MET tunes to the frequency in response to the message broadcast by the central controller.
Patent CA-2217269-C (CA)
Title: Swaged pin end of pipe connection
Inventor: REED JOHN F
IPC: F16L15/00
Filed: 1997-10-01
Granted: 2002-05-28
Abstract: A swaged male element of a pipe connection of the type having a frusto-conical sealing surface adjacent to but separate from the load threads.  The swaging is effected prior to final machining of the end of the pin and is followed by a cutting operation to remove surplus material from the interior surface of the pin. The swaging extends from the distal end of the pin proximally to include at least the distal end of the effective sealing surface, and preferably extends proximally to a point coinciding generally with the terminating proximal portion of the effective sealing area of the pin.
Patent CA-2224095-C (CA)
Title: Revetement retroreflecteur du type carrele
Inventor: SMITH KENNETH L
IPC: G02B5/124
Filed: 1996-06-06
Granted: 2007-03-27
Abstract: L'invention se rapporte à un revêtement rétroréflecteur à éléments en forme de trièdre trirectangle et du type carrelé dont les caractéristiques rétroréfléchissantes sont améliorées au moins dans un plan sensiblement parallèle à un bord du revêtement, et de préférence dans au moins deux plans. Ce type de revêtement présente une surface structurée composée d'une pluralité d'alignements d'éléments en forme de trièdre trirectangle orientés selon des angles prédéterminés par rapport au bord du revêtement. On détermine les angles de manière à aligner au moins un large plan d'angle de projection à peu près parallèlement au bord du revêtement, et de préférence de manière à aligner un autre large plan d'angle de projection à peu près perpendiculairement au bord du revêtement.
Patent CA-2224747-C (CA)
Inventor: SCHUTTE PETER TODD
IPC: F04C28/26
Filed: 1997-12-12
Granted: 2001-09-18
Abstract: Normally closed valve structure is located in a fluid path between the suction and discharge sides of a compressor. The valve structure opens upon a small pressuredifferential when the higher pressure is in the normal suction side which is indicative of reverse operation. Additionally, relief valve structure opens when the discharge pressure becomes excessive.
Patent CA-2238161-C (CA)
Inventor: STOWE MARK S
IPC: B29C45/14
Filed: 1998-06-25
Granted: 2008-02-19
Abstract: A one-piece nipple/collar includes a rigid collar having an exterior surface and an interior surface with a fastener thereon for detachably connecting the same with a nurser bottle or the like. A flexible nipple is molded over at least a portion of the exterior surface of the collar to form an integral, one-piece unit. The nipple extends along at least a portion of the exterior surface of the collar to a termination point that is spaced apart from the interior surface of the collar to avoid interference with the fastener.
Patent CA-2238537-C (CA)
Inventor: SORKIN FELIX L
IPC: E04C5/20
Filed: 1996-11-26
Granted: 2001-08-14
Abstract: A bolster (10) for use in construction including a plurality of leg members (12, 14, 16) arranged in parallel relationship and a beam (18) integrally formed with the plurality of leg members and extending across the plurality of leg members. Each of the plurality of leg members has a foot (42) for contacting an underlying surface. Each of the leg members includes a central body portion (36), a first leg (38) extending downwardly from one side of the central body portion. The foot is formed at an end of each of the first and second (40) legs opposite the central body portion. The foot includes a plurality of pin-like projections (50, 52) extending outwardly from a bottom surface thereof. The beam has a waveform pattern formed across a top surface (28) of the beam and a rectangular cross-section in a plane parallel to the plurality of leg members. The beam includes a male connector (32) formed at one end and a female connector (34) formed at an opposite end for receipt within a connector of an adjacent bolster.
Patent CA-2242288-C (CA)
Inventor: HUGHES STEPHEN J
IPC: E05D5/02
Filed: 1997-01-02
Granted: 2001-12-11
Abstract: La présente invention concerne un organe rigide de raccordement (1) pour une porte (2) pourvue d'un cadre fait de profilés (6) et de rails (8) et dans lequel repose un panneau (2). Cet organe de raccordement comprend un étrier (14) dont le corps (24) présente une forme générale plane et comporte des parois latérales (26) perpendiculaires définissant un canal, des lèvres (28) orientées vers l'intérieur étant disposées le long d'une partie intermédiaire. Une paroi d'extrémité (30) est disposée entre les parois latérales à l'une de leurs extrémités. Un rebord d'extrémité (32) disposé à l'autre extrémité et orienté en sens opposé comporte des languettes (34) sur lesquelles s'engage le rail (8). Les parois latérales (26) comportent également, au voisinage de leurs extrémités, des rebords latéraux (42, 44) tournés vers l'extérieur et comportant au voisinage du rebord d'extrémité (32) une languette (66) s'engageant dans l'extrémité du profilé. L'autre rebord latéral (44) comporte une languette (50) s'engageant dans une fente (10) de la paroi du profilé (6). Un élément (16) de montage de galet, en appui coulissant dans l'étrier et capable de mouvement de coulissement sur l'étrier, transfère les charges vers la paroi d'extrémité. Un galet (18) est monté rotatif sur l'élément de montage, un ergot de butée (98) reposant dans une gorge de l'élément de montage de galet limitant le déplacement de l'ensemble de montage sur l'étrier.
Patent CA-2253812-C (CA)
Title: Biodegradable synthetic ester base stocks formed from branched oxo acids
Inventor: DUNCAN CAROLYN B
IPC: C09K8/54
Filed: 1997-05-21
Granted: 2005-07-26
Abstract: A biodegradable lubricant which is prepared from: about 60-99 % by weight of at least one biodegradable synthetic ester base stock which comprises the reaction product of: a branched or linear alcohol having the general formula R(OH)n, wherein R is an aliphatic or cyclo-aliphatic group having from about 2 to 20 carbon atoms and n is at least 2; and at least one branched oxo acid having a carbon number in the range between about C5 to C10, provided that said branched oxo acid does not include 2-ethylhexanoic acid; wherein the ester base stock exhibits the following properties: at least 60 % biodegradation in 28 days as measured by the Modified Sturm test; a pour point of less than -25 °C; and a viscosity of less than 7500 cps at -25 °C, about 1 to 20 % by weight lubricant additive package; and about 0 to 20 % of a solvent.
Patent CA-2263758-C (CA)
Inventor: WHITE THEODORE BAXTER
IPC: F04D29/18
Filed: 1997-09-16
Granted: 2007-11-20
Abstract: An impeller pump for moving large volumes of liquid against heads of up to 1 meter is formed by a substantial circular housing having its axis substantially vertical in which an impeller is mounted for rotation on the central axis. The impeller has a maximum diameter substantially equal to the inside diameter of the housing and is formed with a hub and the plurality of blades symmetrically positioned around the hub. Each blade extends radially outward of the hub from a root to a tip and has a foil shaped cross section with a lift to drag ratio at least 75 to 1 at a Reynolds number of under 106. Each of the blades is skewed rearward in the direction of blade rotation so that the apparent aspect ratio of blade is increased and to reduce operating noise.  Each blade has an angle of attack of between 2 and 6° has a rake in the direction of flow through the impeller of between 3 and 7°. The impeller lifts water through the housing and directs it into the fish farm.
Patent CA-2267817-C (CA)
Inventor: INJEYAN HAGOP
IPC: H01S3/23
Filed: 1999-03-31
Granted: 2002-02-05
Abstract: An optical amplifier which includes an elongated slab of solid state lasing material, such as a rare earth doped yttrium-aluminum-garnet (YAG). In order to provide a relatively increased absorption length and thus a higher overall efficiency, the optical amplifier in accordance with the present invention incorporates end pumping in which the pumped light is coaligned with the amplified light resulting in relatively longer absorption lengths and higher overall efficiencies. The coaligned pumped sources are directed to lateral faces of the slab which include windows, formed from an insulating coating such as an anti-reflection coating, at the pump wavelength. In order to cause internal reflection of the pump beam along the lasing axis, the end faces are formed at about a 45° angle relative to the longitudinal axis which causes the pumped light to be reflected within the slab co-axially with a amplified light. In order to confine the absorption of the pumped light to the center portion of the slab, the opposing end portions of the slab may be undoped while the center portion of the slab along the longitudinal axis is doped. Such a configuration provides relatively low residual thermal lensing with virtually no birefringence.
Patent CA-2272111-C (CA)
Title: Method and apparatus for winding a material web
Inventor: BEISSWANGER RUDOLF
IPC: B65H18/10
Filed: 1999-05-17
Granted: 2008-08-05
Abstract: A winding machine and process for winding a material web onto a reel. The material web is guided around a carrying drum, in which a nip is formed between the carrying drum and the reel. One of the reel and the carrying drum may be cyclically inclined in relation to a travel direction of the material web by a drive device or press device in order to achieve an axial changing of the material web in a winding roll.
Patent CA-2273037-C (CA)
Title: Procede de multiplexage statistique de communications atm
Inventor: LAMPE DOROTHEA
IPC: H04L12/70
Filed: 1997-11-07
Granted: 2006-02-14
Abstract: Une pluralité de liaisons ATM sont transférées sur une section de connexion. Si une autre installation émettrice exprime le désir d'être reliée, il convient d'abord de vérifier s'il est encore possible de multiplexer cette nouvelle liaison ATM sur ladite section de connexion. En l'état actuel de la technique, on utilise à cette fin l'algorithme dit de la règle sigma. Pour mieux utiliser la capacité de transfert, la catégorie utilisée selon l'état actuel de la technique est subdivisée en plusieurs sous-catégories, d'où la possibilité d'opter pour la catégorie de transfert la moins coûteuse.
Patent CA-2276053-C (CA)
Title: Procedes conferant aux plantes, par manipulation genetique, une resistance aux herbicides inhibant ppo
Inventor: SATO RYO
IPC: C12Q1/26
Filed: 1996-12-27
Granted: 2007-10-23
Abstract: La présente invention porte sur des procédés conférant aux plantes de grande culture une résistance aux herbicides inhibant un protoporphyrinogène. On confère aux plantes cette résistance en les manipulant génétiquement de façon à exprimer l'ADN cloné codant une oxydase protoporphyrinogène résistant aux herbicides porphyriques. Si l'on produit ce type de plantes de grande culture résistant aux herbicides, il est alors possible d'utiliser ces herbicides sur les champs. Cela permettrait d'éliminer plus simplement et avec plus d'efficacité les mauvaises herbes et d'accroître l'effet de ces herbicides destinés à être utilisés en agriculture. Cette invention porte en outre sur des plantes, des algues, des cellules végétales et des cellules algaires que l'on a rendu résistantes aux herbicides inhibant l'oxydase protoporphyrinogène à l'aide des procédés précités en utilisant un gène de cette oxydase protoporphyrinogène obtenu par génie génétique. L'invention porte également sur des procédés destinés à évaluer les effets inhibiteurs de composés tests sur l'activité de l'oxydase protoporphyrinogène, ainsi que sur des procédés d'identification d'inhibiteurs de l'oxydase protoporphyrinogène parmi les composés tests. L'invention porte encore sur des fragments d'ADN cloné codant les enzymes oxydases protoporphyrinogènes résistant aux herbicides porphyriques.
Patent CA-2279230-C (CA)
Inventor: GILL RICHARD AUSTIN
IPC: A61N2/00
Filed: 1998-09-21
Granted: 2005-11-22
Abstract: A device for treating human beings or animals, e.g. horses, may be attached to a strap and has a first disc-shaped magnet (1) rotatably mounted on pins (6) within a second annular magnet (3), and held in place by a plate (8). The upper surface of the second magnet (3) is a south pole and the lower surface is a north pole. The first magnet can be rotated through 180 degrees so that its top surface can be chosen to be a north or south pole. The whole device can be removed from its strap and inverted so that different poles can be adjacent the skin in use. A uniform magnetic field of either polarity, or an alternating field can thus be applied to the wearer.