baber/WOPTO huggingface dataset:
Patent CA-2247108-A1 (CA)
Title: Methods and devices for attaching and detaching transmission components
Inventor: WHIPPLE GARY
IPC: A61B19/00
Filed: 1997-12-12
Abstract: One surgical device includes a transducer assembly (82) adapted to vibrate at an ultrasonic frequency in response to electrical energy. A first transmission component (84) is adapted to receive and transmit the ultrasonic vibration from a first end to a second end. A second transmission component (86) is adapted to receive and transmit the ultrasonic vibrations from a first end to a second end. A torque limiting device (130) coupled to the second transmission component (86) limits the torque when the second end of the first transmission component (84) is coupled to the first end of the second transmission component (86). A method of attaching a transmission component is also provided. A method in accordance with the present invention includes the steps of providing a handpiece assembly (50) having an integral torque limiting mechanism (130) and a first transmission component (84), and threading a second transmission component (86) onto the first transmission component (84) of the handpiece assembly (50). The method also includes the steps of rotating a sleeve of the andpiece assembly (50) until the second transmission component (86) has been tightened to a predetermined torque on the first transmission component (84) of the handpiece assembly (50).
Patent CA-2247748-A1 (CA)
Title: Resorcinol derivatives
Inventor: HU LAN
IPC: A61K8/14
Filed: 1998-09-21
Abstract: Disclosed is new use of certain resorcinol derivatives as skin lightening agents.  The resorcinol derivatives have the formula:                 (see fig. I) where X is:    (1) hydrogen;    (2) OR1 wherein R1 represents hydrogen, (C1-C6)alkyl, aryl-(C1-C6)alkyl, or COR2 wherein R2 represents (C1-C6)alkyl, aryl-(C1-C6)alkyl or phenyl;    (3) halogen;    (4) (C1-C6)alkyl;    (5) aryl-(C1-C6)alkyl;    (6) SR3 wherein R3 represents hydrogen, (C1-C6)alkyl or aryl-(C1-C6)alkyl; or (7) NHR1 wherein R1 is as defined above; n is 0 to 3; and the dashed line represents an optional double bond.
Patent CA-2247849-A1 (CA)
Inventor: SIEMIONKO ROGER KEITH
IPC: D01F6/06
Filed: 1997-03-06
Abstract: A process for producing plexifilamentary products by spinning from a solution of a primary solvent selected from the group consisting of methylene chloride and 1,2-dichloroethylene and a co-solvent, and a spin solution of a polyolefin dissolved in a primary solvent selected from the group consisting of methylene chlorine, and a 1,2-dichloroethylene, and a co-solvent.
Patent CA-2249915-A1 (CA)
Inventor: NEMOTO HIROSHI
IPC: H01M50/457
Filed: 1998-10-09
Abstract: A lithium secondary battery includes: a battery case, and an internal electrode body 1 contained in the battery case and including a positive electrode 2, a negative electrode 3, and a separator 4 made of porous polymer. The positive electrode and the negative electrode are wound and laminated through the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other. The battery case is composed of pure aluminum or aluminum alloy in which one or more components selected from manganese, magnesium, silicon and copper is added in aluminum. The lithium secondary battery has high weight energy density, is superior in safety, and is used for, particularly, an electric vehicle.
Patent CA-2250772-A1 (CA)
Title: Ball controller for checking the diameter of a golf ball
Inventor: JOHNSEN ERLING
IPC: G01B5/00
Filed: 1997-04-16
Abstract: A ball controller (10) is in the form of a rigid mat having a central cavity (12) for the reception of a golf ball (11) for checking the diameter of a golf ball (11), the ball controller (10) having sectionally (13, 14, 15) differing wall thicknesses (a, b, c) in the radial direction of the controller (10) and preferably having an optimal thickness in a radially innermost, annular portion (15) around the cavity (12).        The cavity (12) has a cylindrical inner face (14a) having an axial dimension (1) of 3 mm minimum.
Patent CA-2251141-A1 (CA)
Inventor: SELWYN FREDERICK PHILIP
IPC: F04F7/02
Filed: 1997-04-02
Abstract: A fluid pressure amplifier comprises a pipe for flowing fluid and having an array of holes formed therein through which fluid can flow from within the pipe in use and resiliently-movable obturator means adjacent the pipe and operatively responsive to fluid inlet pressure in the pipe, in which fluid inlet pressure causes the obturator means to oscillate between conditions which alternately permit and prevent fluid from passing through the holes, whereby the fluid leaving the pipe has a pulsed increased pressure. The amplifier is intended for use especially to increase the pressure of water flowing through a pipe submerged in a river, to provide a pumping action to a higher level.
Patent CA-2252126-A1 (CA)
Title: Internet protocol (ip) communication over multiple networks and network resources
Inventor: BRITNEY CHARLES W
IPC: H04L45/125
Filed: 1998-10-28
Abstract: A method for analyzing internet packets and selecting a communication line that provides a desired Quality-of-Service. Quality-of-Service can include such characteristics as throughput, latency and error rate.
Patent CA-2254255-A1 (CA)
Inventor: COUPEZ JEAN-PHILIPPE
IPC: H01Q5/357
Filed: 1998-12-10
Abstract: The side mounted coupling input is direction sensitive and matched to a slot input on the upper substrate face.
Patent CA-2254907-A1 (CA)
Title: Methods and apparatus for the detection of dental caries
Inventor: LOS PRZEMYSLAW
IPC: A61C19/04
Filed: 1997-05-13
Abstract: An apparatus for the electronic detection of dental caries comprises at least one probe electrode (10) placed in electrical contact with the surface of a patient's tooth, and a second electrode (12) placed in electrical contact with another part of the body of the patient; an alternating electrical current is passed between the probe (10) and the second electrode (12). The frequency of the alternating current is varied over a predetermined frequency range and the electrical impedance between the electrodes (10, 12) is measured for a number of frequency values within the range. A variety of probe designs to suit different types of teeth and different tooth surfaces generally comprise an insulating substrate (120) of hydrophobic material, such as Goretex, and one or more electrodes (122), preferably of a conductive, hydrophobic material such as carbon-impregnated Goretex.
Patent CA-2257506-A1 (CA)
Title: Weight-lifting apparatus and method
Inventor: TRURAN THOMAS M
IPC: A63B21/072
Filed: 1999-01-19
Abstract: A weight-lifting apparatus includes a plurality of weights each having a central hole and a slot extending from the central hole to a perimeter of the associated weight, the slot having a width less than the diameter of the central hole. The apparatus further includes a shaft having opposing ends defining a diameter about equal to the central holes, and a sleeve positioned on the shaft. The shaft is shaped to rotatably engage the central holes and is rotatable to different positions. The shaft further has a plurality of recessed surfaces on the opposing ends corresponding to the different positions that extend different longitudinal lengths, the recessed surfaces defining with other surfaces on the shaft a reduced dimension about equal to the width of the slot. Further, the shaft and the weights are configured so that by rotating the shaft, the recessed surfaces are selectively positioned to allow the shaft to slide along one or more of the slots, thus selectively releasing the weights. A method related to the above apparatus includes providing a weight-lifting apparatus having a plurality of weights and a shaft shaped to selectively engage one or more of the weights, rotating the shaft to selectively engage a desired number of the weights, and lifting the weight-lifting apparatus with the selected weights held on the shaft. A person using the weight-lifting apparatus can easily rotate the shaft to select a desired number of weights without interrupting their exercise routine.
Patent CA-2258249-A1 (CA)
Inventor: PECKHAM DAVID RONALD
IPC: F16D33/00
Filed: 1999-01-08
Abstract: A stepless infinitely variable transmission system has a casing with inlet (or outlet) holes, the casing housing an inlet and output shaft which are connected by series of concentric cages, alternate cages being connected to the inlet and outlet shafts alternately whilst remaining free to rotate on the other shaft respectively.  The cages comprise or includes series of blades which interact with a transmission medium which is moved in a direction or directions in the casing between inlet and outlet so that the blades experience changes in angular momentum of the transmission medium, the blades being curbed oppositely in sense in relation to whether their cage is an inlet or outlet connected cage.
Patent CA-2258530-A1 (CA)
Inventor: KOCH NORBERT
IPC: H01B17/00
Filed: 1997-05-28
Abstract: Device for transmitting light between two points with a different electric potential and process for manufacturing such a device. The device contains a high-voltage insulator (2) with an inner cavity (3) which receives optical fibres (4, 5) and is filled with a plastic foam (6), preferably polyurethane foam.
Patent CA-2258813-A1 (CA)
Inventor: FISCHER WOLFGANG
IPC: C09D4/06
Filed: 1999-01-05
Abstract: The present invention relates to coating compositions containing a) a urethane-(meth)acrylate containing; (meth)acryloyl groups and free isocyanate groups, b) optionally a polyisocyanate other than a), c) a UV initiator which initiates free radical polymerization and d) a compound containing isocyanate-reactive groups. The present invention also relates to a process for preparing a coating from this coating composition.
Patent CA-2259275-A1 (CA)
Inventor: DIECKMANN MICHAEL
IPC: G01N21/552
Filed: 1997-06-18
Abstract: La présente invention concerne un dispositif pour mesurer la pression partielle de gaz dissous dans des liquides. Ce dispositif comporte (a) un point de mesure (15) qui est partiellement isolé par une membrane perméable aux gaz (11), laquelle est perméable au gaz à déterminer; (b) une source d'émission lumineuse (6) pour produire un faisceau lumineux assurant une interaction avec le liquide dans le point de mesure (15) et présentant une longueur d'onde qui est absorbée par le gaz à déterminer; et (c) un système de mesure (7) permettant de déterminer la lumière quittant le point de mesure (15). Ce dispositif est caractérisé en ce que (d) le point de mesure (15) est en contact avec l'interface d'un élément photoconducteur (14), et (e) la lumière est guidée à travers ledit élément (14) de telle manière que sa réflexion totale est affaiblie au niveau de l'interface.
Patent CA-2259900-A1 (CA)
IPC: G01N21/17
Filed: 1999-01-22
Abstract: Propagation of light in a homogeneous scattering slab is conveniently modelled with a diffusion equation. This approach can be extended to a heterogeneous slab through a perturbation analysis. Within Born's approximation, the effect of an inclusion on the transmitted light is described by space-time integrals. Closed-form time integration is possible, which reduces the perturbation expressions to volume integrals over the inclusion. These can be useful to model small inclusions over which the integrand can be considered as constant. In the case of cubic inclusions with sides parallel and perpendicular to the boundaries of the surrounding slab, closed-form volume integration over the inclusion can be performed instead. Only time integrals are left, which reduces the numerical work. Numerical examples are presented. It is shown that inclusions with different volume and contrast with regards to the surrounding medium can produce the same effect on the transmitted light and are thus indistinguishable. The perturbation analysis has been used to assess the possibility of obtaining some longitudinal localization of an inclusion by using source beams and detectors of different sizes. Calculation results are also compared to experimental measurements to illustrate the validity of this analysis in the presence of small perturbations.
Patent CA-2262021-A1 (CA)
Title: Natural wood fabric
Inventor: TRI JINNA
IPC: B32B9/00
Filed: 1999-02-16
Abstract: A fabric consisting essentially of a mixture of white pine wood fibers and fibers of another natural material derived from plant materials. The fibers of white pine wood comprise at least 20% of the mixture, and the other material is preferably cotton.
Patent CA-2263053-A1 (CA)
Title: Differential optical signal receiver
Inventor: AGARWAL DIWAKAR
IPC: H04B10/43
Filed: 1999-02-26
Abstract: A differential optical signal receiver includes an interference-rejecting circuit to provide enhanced interference signal rejection. The differential optical signal receiver includes a differential optical signal detector for detecting a received differential optical signal and converting it to a differential electrical signal. An interference-rejecting differential electrical circuit, including a common source load, processes the differential electrical signal so as to reject any electrical interference signal other than said differential electrical signal.
Patent CA-2263973-A1 (CA)
Inventor: PROKOPY RONALD J
IPC: A01N25/00
Filed: 1997-08-18
Abstract: The present invention is a device for delivering pesticide to pests, comprising: (a) an outer layer comprising a porous water-insoluble polymeric; (b) an inner layer in contact with the outer layer, the inner layer comprising a water-soluble feeding stimulant and a carbohydrate which is at least partially gelatinized; and (c) a toxicant which is present on or in the outer layer, the inner layer, or both. The types of pests for which the device may be used to deliver pesticide are any pests which are able to be controlled by the toxicants used in the device and that can be attracted to an object to feed and/or lay eggs, such the apple maggot fly, the Mediterranean fruit fly, the house fly, the oriental fruit fly, the blueberry fruit fly, the olive fruit fly, the melon fruit fly, and the Mexican fruit fly as well as other flies, beetles, wasps, moths, cockroaches, and any other insect that can be lured to a device for feeding or egg laying. The porous water-insoluble polymeric materials are paints, shellacs, linseed oil and other water-soluble or water-suspendible material that becomes insoluble upon drying. Examples of water-soluble feeding stimulants are sugary products chosen from the group consisting the sucrose, glucose, fructose, molasses, maltodextrins, and corn syrup as well as corn flour, gluten or other sugary or proteinaceous and lipid materials for insects other than flies. Examples of carbohydrates are corn flour, cornstarch, wheat starch, and potato starch. Toxicants which may be used are dimethoate, phyloxine B, avermectin, azinphosmethyl, diazinon, permethrin, Imidacloprid, Malathion, Methomyl, or other insecticides available in sufficient quantity to kill insects upon feeding or alighting on the sphere. A high boiling liquid such as glycerin may optionally be added to the carbohydrate/first layer of the device to prevent cracking.
Patent CA-2265315-A1 (CA)
Title: Fixed network rf communications compliant with cebus protocol
Inventor: MASON ROBERT T JR
IPC: H04Q9/00
Filed: 1999-03-15
Abstract: The CEBUS protocol is employed in an automatic meter reading (AMR) fixed network RF system while maintaining commonality and compliance with other CEBUS equipment. The AMR system comprises a plurality of utility meters, each meter comprising a radio frequency (RF) module for transmitting and receiving RF CEBUS message packets in accordance with a prescribed CEBUS protocol, wherein the CEBUS message packets contain embedded AMR message packets in accordance with a prescribed AMR protocol. In addition, the system includes a node(s) for accessing data stored by any one or a group of the utility meters via RF communications using the CEBUS protocol.
Patent CA-2270587-A1 (CA)
Inventor: GAROLFI SERGIO J
IPC: C03C27/10
Filed: 1999-04-30
Abstract: An improved process and apparatus for manufacturing an insulating glass panel assembly having at least two glass panels spaced apart one from the other by and adhered to a moisture resistant sealant composition, said process comprising the steps of (a) applying said sealant composition to a portion of at least one of said glass panels; (b) suitably positioning said glass panels one to the other in spaced apart relationship with said sealant therebetween; (c) heating said sealant to effect adhesion to said glass panels; and (d) cooling said sealed insulating glass assembly; the improvement comprising selectively heating the sealant by selectively irradiating said sealant at an effective sealant absorbing but relatively low glass absorbing infrared wavelength selected from 0.8 - 1.3 microns, preferably, 1.1 - 1.2 microns, to effect selective heating of said sealant by said radiation. The process and apparatus obviates the need to provide a temporary aperture for air movement into and out of the air space in the assembly during manufacture and, accordingly, reduces expensive labour, time and storage costs. The invention further allows for large lite assemblies to be treated.
Patent CA-2271939-A1 (CA)
Inventor: COAD MICHAEL T
IPC: G06F21/31
Filed: 1997-11-13
Abstract: A system for user-programming of system parameters of a cellular telephone (100). Data values for the system parameters are stored in a nonvolatile memory (112) within the cellular telephone. A password storage area (116) stores one or more predetermined passwords. After purchasing the telephone (100), the end-user calls a predetermined telephone number and receives one of the predetermined passwords. The user enables a programming mode and enters the predetermined password using the cellular telephone keypad (20). If the user-entered password matches the stored predetermined password, the cellular telephone (100) allows user access to at least a portion of the system parameters in the nonvolatile memory (112). A counter (120) tracks the number of user-programming attempts and terminates the programming after either a predetermined number of failures or successful programming of all the desired system parameter values.
Patent CA-2272096-A1 (CA)
Title: Systeme de gestion integree de messagerie et de communications
Inventor: FREISHTAT GREGG S
IPC: H04M7/00
Filed: 1997-11-17
Abstract: L'invention concerne des systèmes permettant à un utilisateur d'accéder grâce à une interface intégrée à des services de communications basés sur le téléphone et un réseau d'ordinateurs. Un utilisateur peut accéder aux systèmes par téléphone ou par ordinateur (via un modem ou Internet). L'utilisateur peut accéder aux messages qui lui sont adressés par des moyens divers, tels qu'un courrier électronique, une boîte à lettres vocale, un fax etc. L'utilisateur peut répondre à ces messages par les mêmes moyens ou des moyens différents, y compris par des communications en temps réel telles qu'un appel téléphonique direct ou une conférence téléphonique. L'interface permet également à l'utilisateur d'avoir recours à une page Web contenant des informations sélectionnées par l'utilisateur. Le système peut consister en un système autonome connecté à Internet et au réseau téléphonique. Le système peut également être intégré dans des infrastructures existantes de gestion de communications téléphoniques.
Patent CA-2275555-A1 (CA)
Inventor: HOFMANN HANS
IPC: C25B9/00
Filed: 1997-12-17
Abstract: The invention relates to an electrolyzer for the electrolysis of water in hydrogen and oxygen with a number of electrolytic cells, each containing an anode and a cathode, connected in series in a cell block (1) surrounded by a pressure vessel (2). At one end of the cell block (1) is a first electrode (anode 3), and at the opposite end of the cell block is a second electrode (cathode 4). Both are connected with leading-in cables (5, 6), which run through the pressure vessel (2) and conduct the electric current to the cell block (1), the interior of the pressure vessel (2) being filled with pressurized water (7) surrounding the cell block (1). In accordance with the invention, it is envisaged that the first electrode (3) is placed inside the cell block (1) so as to be electrically isolated, by encapsulation, with respect to the pressurized water (7), and that there is a channel (8), sealed against the pressurized water (7), that leads from the cell block through the pressurized vessel (2) to the outside. Through this channel, the leading-in cable (5), which is connected with the first electrode (3), is led to said first electrode (3).
Patent CA-2276471-A1 (CA)
Title: Disposable thermal neck wrap
Inventor: KIMBLE DAWN MICHELE
IPC: A61F7/00
Filed: 1997-12-17
Abstract: The present invention relates to disposable thermal neck wraps (10) having one or more thermal packs (50) comprising a unified structure having at least one continuous layer of semirigid material, which has different stiffness characteristics over a range of temperatures, and a plurality of heat cells (26), wherein the heat energy is applied to specific areas of the upper back, neck and shoulders. More particularly, the present invention relates to disposable thermal neck wraps (10) having good conformity to user's upper back, neck, and shoulders which provides consistent, convenient, and comfortable heat application.
Patent CA-2280984-A1 (CA)
Inventor: PRADEL JEAN-LAURENT
IPC: C08K5/3445
Filed: 1999-08-26
Abstract: L'invention se rapporte aux formulations polyuréthane à base de polybutadiène hydroxylé catalysées par un dérivé de l'imidazole N-substitué. Ce type de catalyse remplace avantageusement les catalyseurs classiques à base de sel de mercure. En effet, il ne pose pas de problème écologique et permet une montée de viscosité particulière autorisant un temps de travail allongé et une prise rapide.
Patent CA-2284559-A1 (CA)
Title: Agglutrimetric assays in blood
Inventor: HILLMAN ROBERT S
IPC: G01N33/543
Filed: 1998-03-20
Abstract: Methodology is provided for determining a characteristic of a sample, wherein problems associated with interference from whole blood, and oxygenated whole blood in particular, are avoided. Particularly, small particles are employed to which is bound a reagent, which interacts directly or indirectly, with a component related to the characteristic to be determined, which particles absorb in the infrared. By employing a protocol which results in the agglutination of the particles, the change in light absorption characteristics of the sample can be directly correlated with the presence, and as appropriate, function of the component related to the characteristic of interest in the sample.
Patent CA-2284689-A1 (CA)
Title: Animal model for evaluation of vaccines
Inventor: CHANG LUNG-JI
IPC: G01N33/48
Filed: 1998-04-09
Abstract: The present invention provides animals and methods for the evaluation of vaccines. In particular, the present invention provides humanized animal models for the evaluation of vaccines designed to confer immunity against human pathogens, including vaccines directed against the human immunodeficiency virus. The present invention further relates to HIV vaccines. In particular, the present invention provides attenuated replication-competent HIV vaccines and replication-defective HIV vaccines. In addition, the invention provides modified Leishmania cells expressing HIV proteins.
Patent CA-2285474-A1 (CA)
Title: Label or wrapper with premium
Inventor: WITKOWSKI DANIEL D
IPC: G09F3/02
Filed: 1997-10-10
Abstract: This invention relates to the application of premiums positioned on consumer packaging to provide value to the advertising label stock. The premiums (36) preferably are integral with the labeling material (34) such that the label (34) has an essentially uniform thickness that does not create a problem for automated application of the label stock to the consumer product.