baber/WOPTO huggingface dataset:
Patent CA-2126779-A1 (CA)
Title: Non-contacting, gap-type seal having a ring with a patterned microdam seal face
Inventor: PECHT GLENN G
IPC: F16J15/34
Filed: 1994-06-27
Abstract: ABSTRACT OF THE DISCLOSURE A seal face of at least one ring used in a non-contacting, gap-type mechanical end face seal having a pattern including an optional dam and an annular grooved area.  The annular grooved area has one of several embodiments, including entrance lands which are essentially triangular and have one side contiguous with one circumferential edge of the annular grooved area.  These embodiments further include a set of converging boundary sides of the groove to provide a pressure zone effect.  Seal face patterns include a contiguous groove around the circumference of the seal face and a series of annular bands comprising a repeating pattern of an essentially triangular groove interposed between two adjacent, but oppositely oriented, lands.  One seal face pattern includes a circular or elliptical groove being open to the circumferential edge, thus providing an entrance land effect, and which includes a circular or elliptical land within it so that the boundaries between the lands and groove converge to provide the pressure zone effect.
Patent CA-2130165-A1 (CA)
Title: Protective and warming bonnet for food
Inventor: GERSTER PETER
IPC: A47G19/26
Filed: 1994-08-15
Abstract: ABSTRACT OF THE DISCLOSURE    The protective and warming bonnet for food is provided with two, preferably, semi-circularly curved braces 1,2 whose ends are connected to hinges.          These braces may be pivoted by 0° to a maximum of 180° in relation to one another.  A folding bellows 4 is arranged between the two braces 1,2 such that in the state in which they are pivoted apart, the braces 1,2 form a bellows-like dome.  In one variation, the protective and warming bonnet is provided with a continuous base 14 in the form, for example, of a serving platter on which the braces rest during use.       A carrying handle 13 of round steel or a tube is hooked to the hinges 5,6 on the braces.  This handle rests in a notch or a slot at the hinge while under the pressure resulting from carrying such that it is no longer pivotable in relation to the base.
Patent CA-2130963-A1 (CA)
Title: Controlled heat input combustion-type water heater
Inventor: MOORE HENRY J JR
IPC: F24H1/36
Filed: 1994-08-26
Abstract: A forced draft gas-burning water and/or space heater is provided in which overheating and vaporization are reduced or prevented by a blower adjustment to deliver fuel at a variable and controlled rate to a combustion chamber to allow the burner to produce a preselected heat output. The burner heat output is regulated by control circuitry in response to the rate at which hot water is withdrawn from the tank and cooler incoming water creates a demand for heat.
Patent CA-2133629-A1 (CA)
Title: Method of molding preform in injection stretch blow molding
Inventor: NAKAJIMA HISASHI
IPC: B29C49/64
Filed: 1994-10-04
Abstract: ABSTRACT         A method of molding a preform in an injection stretch blow molding, wherein a gas is entered into the boundary between the preform and an injection core so that the gas pressure causes the preform in an injection mold to be insulated from the injection core, thereby allowing a high-temperature releasing of the preform.
Patent CA-2134661-A1 (CA)
Title: Method of measuring and controlling adhesion/release of a paper web which is removed by a doctor blade from a yankee cylinder and a web tension gauge
Inventor: BERGLUND PER ROODE
IPC: D21G9/00
Filed: 1992-04-29
Abstract: According to the invention, the supply (11) of an adhesion and release agent respectively to the surface of a Yankee-cylinder (1) from which the paper web is removed with the aid of a doctor blade (5) is controlled as a function of a signal from a gauge (20) which measures web tension and which is located between the cylinder (1) and the device (7, 8, 9) by means of which the web is rolled-up. When the degree of crêping is constant, an increase or decrease in web tension indicates that adhesion has increased or decreased respectively, resulting in a change in the setting of the supply device (11, 12). The invention also relates to a suitable web tension gauge to this end.
Patent CA-2137910-A1 (CA)
Title: Use of microcapsules as contrasting agents in colour doppler sonography
Inventor: REINHARDT MICHAEL
IPC: G01S15/89
Filed: 1993-04-24
Abstract: The invention concerns the use of gas-filled or liquid-filled microcapsules as ultrasonic contrasting agents to contrast regions of the body in which substantially no microcapsule movement is observed, the examination being carried out using colour Doppler sonography.
Patent CA-2138396-A1 (CA)
Title: Platinum plating bath electrolyte
Inventor: PLETCHER DEREK
IPC: C25D3/50
Filed: 1993-06-14
Abstract: A platinum plating bath electrolyte for plating platinum or platinum alloys contains a platinum(II) salt, in which the plati-num(II) is present in solution as Pt(H2O)42+, and permits efficient deposition of Pt.
Patent CA-2140595-A1 (CA)
Inventor: GRAMLICH JOHN D
IPC: B65H5/02
Filed: 1995-01-19
Abstract: An idler system that is both self-centering and self-aligning with a drive roll. The idler assembly consists of a pair of rolls connected by a shaft, the shaft being supported in a housing. The housing is retained by a resilient spring member which member allows the axis of rotation of the idler rolls to pivot in more than one plane simultaneously. This pivoting causes the axis of rotation of the idler assembly to align parallel with the drive roll axis. The single spring also provides an even loading of the normal force across the width of the drive nip. As a result of the alignment and even loading, skewing of a sheet is prevented as it is driven through the nip formed by the drive roll and the idler roll. The resilient spring mounting also allows for easy replaceability of the idler assembly and the housing is easily locatable between tabs formed in the frame of the machine for mounting the idler assembly therein. The housing provides a guide from the mounting frame into the nip and from the nip into the downstream paper path for increased capacity to handle curled and/or damaged cut sheet media.
Patent CA-2142339-A1 (CA)
Title: An apparatus for storing and dispensing articles
Inventor: JENKINS ALAN E
IPC: B65F1/00
Filed: 1993-08-13
Abstract: The present invention relates to a method and apparatus adapted to promote the recycling of complex articles, such as, in particular, printer cartridges, toner cartridges and other complex office items. The invention provides an apparatus having storage space arranged to store a number of such complex articles for recycling.  Access to the storage space is controlled by a data processor which interacts with a user byway of a visual display unit and control panel. If the user wishes to store an item, he indicates this by way of the control panel and the apparatus is then operable to open a receptacle to receive the used item. When the used item is placed in the receptacle, in preferred embodiments means are provided to determine that the used item is an article of an appropriate type to be stored. These means preferably employ shape recognition. The article will be rejected if it is not of the correct type and accepted and retained in a storage space if it is of the correct type. The preferred apparatus is also arranged to dispense items on request by the user. A preferred feature is that the apparatus will not dispense a new or recycled item if a predetermined ratio of new items dispensed to used items stored by that user would be exceeded. This encourages recycling.
Patent CA-2144746-A1 (CA)
Title: Process for separating fullerenes
Inventor: MUELLER WOLFGANG
IPC: C01B31/02
Filed: 1993-09-03
Abstract: The invention relates to a process for the chromato-graphic separation of fullerenes using a nonpolar aro-matic solvent as eluant. Coke, anthracite and/or graphite are used as support material. The nonpolar solvent is the main constituent of the eluant.
Patent CA-2149664-A1 (CA)
Title: Low energy fuse and method for its manufacture
Inventor: ANDERSSON LARS
IPC: B29C48/151
Filed: 1993-11-10
Abstract: A low energy fuse, comprising a plastic tube with a channel, the channel containing a reactive material able upon ignition to sustain a shock wave within the channel, the tube comprising at least two layers of plastic materials, a first plastic layer closer to the channel and a second plastic layer outside the first layer, at least the second layer containing a major amount of draw orientable polymer resin. The polymer in the second layer is axially oriented to an orientation degree (as defined) of more than 25 % and less than 90 % and that the polymer of the first layer has an axial orientation degree not exceeding 10 % orientation degree units more than that of the second layer. The tube can be manufactured by a) forming, by extrusion of the first layer plastic, the first layer in the form of a tube, b) introducing the reactive material in the tube channel, c) limiting stretching of the first layer to give a low degree of orientation, not exceeding 10 % (as defined), d) forming, by extrusion of the second layer plastic, the second layer around the first tube, while the first layer have said low degree of orientation, and e) cold-stretching the first and second layers together.
Patent CA-2152446-A1 (CA)
Inventor: LINN C PRESTON
IPC: C12Q1/6816
Filed: 1995-06-22
Abstract: The present invention relates to conjugates of a cyanine dye and an oligonucleotide. When these conjugates hybridize or bind to a target, a detectable increase in fluorescence intensity or change in fluorescence polarization is observed.
Patent CA-2153085-A1 (CA)
Inventor: GOISET PAUL
IPC: A47C1/022
Filed: 1995-06-30
Abstract: Fauteuil comportant un châssis (1) supportant une partie de siège (2), une partie de dossier (2) et deux accoudoirs (9), la partie d'assise et/ou la partie de dossier étant disposées à pivotement sous l'action d'un moyen moteur (4, 5) actionné par un moyen de commande, fauteuil caractérisé en ce que le moyen de commande est constitué par un accoudoir (9) qui est monté mobile sur le châssis (1) et qui est relié au moyen moteur considéré afin de le déclencher lors du déplacement de l'accoudoir.
Patent CA-2163907-A1 (CA)
Title: Taie d'oreiller gardant au chaud
Inventor: HEROUX MARIETTE
IPC: A47G9/02
Filed: 1995-11-28
Abstract: Précis: Taie d'oreiller spéciale pour garder la tête au chaud, conçue avec une enveloppe recouvrant le dessus de la tête. Confectionnée en tissu chaud, cette d'oreiller protège de l'humidité, du froid et des courants d'air, donc élimine les risques qu'engendrent ceux-ci Cette présente invention offre une protection pour la tête, le cou et les épaules.
Patent CA-2164342-A1 (CA)
Title: Method and apparatus for communicating signals from encased borehole
Inventor: SAMDAHL ROGER
IPC: E21B47/12
Filed: 1994-06-03
Abstract: A method and apparatus for wireless communicating of signals within an encased borehole (14) between a downhole tool (18) and the surface (11). The tool includes conductive upper and lower tool housings (21a, 21b) which are respectively in electric contact with the conductive borehole casing. Sensors (69) within the tool generate signals which are applied to a carrier signal. The modulated carrier signal is applied via the housings to the borehole casing. The carrier signal cause a reciprocating current to flow through the borehole casing (14a) between the tool housings, inducing a voltage potential on the outside of the well-casing, which forms a dipolar electromagnetic field (30) in the earth (12) which can be received at the surface.
Patent CA-2165937-A1 (CA)
Title: Process for producing an undenatured whey protein concentrate
Inventor: BOUNOUS GUSTAVO
IPC: A23C9/142
Filed: 1995-12-21
Abstract: A process for producing an undenatured whey protein concentrate as a by-product in making cheese to give a whey protein concentrate having serum albumin content of about 9.5% or more involving microfiltration, ultrafiltration, control of temperature and other factors.
Patent CA-2167996-A1 (CA)
Title: Switchmode Power Converter for Telephone Subscriber Line Interface Circuits
Inventor: SUTHERLAND BRIAN A F S
IPC: H04M19/02
Filed: 1996-01-24
Abstract: A power converter forming part of a telephone subscriber line interface circuit selectively generates a ringing signal waveform, for supply to the line, or a supply voltage for a driver circuit for providing loop current on the line. First and second fixed frequency PWM signals are used to control the power converter, and hence the voltage which it generates, for the ringing signal waveform and the supply voltage respectively. The first PWM signal enables the power converter to provide a high power level needed for ringing signals. The second PWM signal has a lower frequency, and hence results in lower switching losses and power dissipation, and a lower duty cycle, suitable for the lower power level needed for the supply voltage, and is conveniently produced bymasking pulses of the first PWM signal. The frequency of the second PWM signal is greater than 270 kHz, to avoid transmitting spectral energy to the line below this frequency.
Patent CA-2168662-A1 (CA)
Inventor: STONE JAMES JOSEPH
IPC: B23K26/06
Filed: 1994-08-03
Abstract: L'invention concerne un système de marqueur à laser conçu pour faire des marques sur un substrat (146) présentant une façade et une seule source laser (120). La surface du substrat (146) est généralement située au niveau du plan focal de la lentille (140). La source laser unique (120) est placée de sorte que les faisceaux de sortie d'énergie soient orientés parallèlement les uns aux autres. Ladite source unique comporte un moyen réfléchissant segmenté (131) générant une pluralité de faisceaux de sortie d'énergie (139) de manière à créer une colonne de points sur le substrat (146) de définition supérieure. Le moyen réfléchissant segmenté (131) se compose d'un miroir de rétroréflexion constitué d'une pluralité de segments de miroirs différents (131a-131n). Un dispositif est conçu pour déplacer chacun des segments de miroirs entre une position d'émission laser (148) et une position de non-émission laser (150) de manière à faire varier le nombre de faisceaux de sortie d'énergie et ainsi le nombre de points sur le substrat (146).
Patent CA-2168981-A1 (CA)
Title: Blood processing system having spill sensor with fail-safe circuit
Inventor: TOTH RONALD E
IPC: B04B13/00
Filed: 1995-01-09
Abstract: A blood processing assembly (10) includes a centrifuge container (12) within a heated housing or chamber. A fail safe spill or splash detector (30) is located within the inner wall of the housing. The detector includes a pair of parallel electrodes (32, 34) separated from each other by a small gap. The circuit detects a splash or droplet of liquid which conduct current between the electrodes.
Patent CA-2169034-A1 (CA)
Title: Perfluoroalkysulfonates, sulfonimides, and sulfonyl methides, and electrolytes containing them
Inventor: WADDELL JENNIFER E
IPC: H01M10/0565
Filed: 1996-02-07
Abstract: An electrolyte composition that includes a salt disposed in a matrix in which the salt has a formula selected from the group consisting of     in which X- is -O-, -N-SO2Rf3, or (Rf5SO2)-C--(SO2Rf4); Z is -CF2-, -O-, -NRf8-, or -SF4-; Rf1 and Rf2, independently, are -CF3, -CmF2m+1, or -(CF2)q-SO2-X-M+; Rf3, Rf4, and Rf5, independently, are -CF3, -CmF2m+1,  -(CF2)q-SO2-X-M+,   or   Rf8 is - CF3, - CmF2m+1, or -(CF2)q-SO2-X-M+; Rf6 and Rf7, independently, are perfluoroalkylene moieties having the formula -CrF2r; n is 1-4; r is 1-4; m is 1-12; q is 1-4; and M+ is a counterion.
Patent CA-2169106-A1 (CA)
Inventor: VENIER FABIO
IPC: A63C1/30
Filed: 1996-02-08
Abstract: A replaceable blade skate comprises inexpensive, light, easily changed blades adapted to fit to multiple rocker curvatures. A torque limiting device provides for easy replacement and adjustment of blades by consumers. Replaceable toe and heel caps provide protection and colour-coding. The sometimes undesirable gap between the boot and blade portion of the skate can be eliminated with the construction of the skate of the invention.
Patent CA-2170627-A1 (CA)
Title: A novel prostate/colon tumor suppressor gene located on human chromosome 8
Inventor: BOOKSTEIN ROBERT
IPC: C12N15/12
Filed: 1995-05-22
Abstract: This invention provides a novel nucleic acid molecule encoding a prostate/colon tumor suppressor gene product.  The means and methods for detecting mutations and/or loss of prostate/colon tumor suppressor gene are provided.  Also included within the scope of this invention are methods of suppressing the neoplastic phenotype of cancer cells having a defect in the prostate/colon tumor suppressor gene product. The invention also includes the means and methods for treating the cancer by administering the prostate/colon tumor suppressor gene.
Patent CA-2171727-A1 (CA)
Inventor: ZHANG TAI Y
IPC: H04N7/30
Filed: 1994-09-13
Abstract: An adaptive system (10) and method for data storage and communication is primarily used for the storage and transmission of large volumes of data, especially video data, over band-limited communication channels. The video coder (200) of the system (10) uses a prediction video signal which is subtracted from the input image to define a processing region in which image blocks of predetermined dimensions have large prediction error. The prediction image is successively improved by iteratively processing large error image blocks until the error is reduced below a predetermined threshold. At different processing iterations and image blocks, different compression techniques can be used to improve the overall system efficiency.
Patent CA-2174462-A1 (CA)
Title: Dealing with side effects of transactions in data base systems
Inventor: GRIFFIN TIMOTHY G
IPC: G06F17/30
Filed: 1996-04-18
Abstract: Apparatus and methods for reducing the amount of computation required to determine the consequences of a side effect resulting from a transaction on a relation in a data base system. The apparatus and methods use equational reasoning based on a bag algebra representation of a class of transaction and the relation to produce a pre-expression which describes the side effect.  The pre-expression is included in the data base system's data dictionary, and when a transaction of the class is received in the data base system, the pre-expression is used to determine the side effect. The pre-expression is formed with a strongly-minimal pair of delete and insert bags. The apparatus and methods may be used to maintain materialized views, to check for violation of constraints on the data base, and to activate triggers, monitors, and active queries.
Patent CA-2175755-A1 (CA)
Inventor: MAO HUANYU
IPC: H01M10/056
Filed: 1996-05-03
Abstract: The  loss  in delivered capacity upon cycling non-aqueous rechargeable lithium batteries can be reduced by incorporating a small amount of B2O3 additive in the electrolyte.  The B2O3 additive is preferably dissolved in the electrolyte prior to assembling the battery.  The invention is particularly suited to lithium ion rechargeable batteries.
Patent CA-2175862-A1 (CA)
Title: Propoxyphene derivatives for immunoassay reagents
Inventor: WU ROBERTO SUNDORO
IPC: C07C229/38
Filed: 1996-05-06
Abstract: The invention provides hapten derivatives of formula               I     wherein R1 is a saturated or unsaturated straight or branched hydrocarbon of 1-15 carbon atoms when R2 is COR3 or NHR3, or 2-15 carbon atoms when R2 is SR3 or OR3, and R3 is a group X or LX wherein X is a labeling or immunogenic carrier group and L is a linker arm through which X is bound, that are useful for the preparation of antigenic, antibody and label reagents having superior performance characteristics for use in immunoassays for the detection of d-propoxyphene and d-nor-propoxyphene.
Patent CA-2179801-A1 (CA)
Title: Security sensor arrangement with overlapping fields of view
Inventor: DAVIS ANDREW LENNOX
IPC: G08B13/19
Filed: 1996-06-24
Abstract: The advent of CCD's (30) has made high resolution visible wavelength sensors relatively inexpensive. Similar resolution thermal imagers (10) are currently far too expensive for most security sensor applications. In order to make a high performance intrusion sensor combining the two disparate wavelength sensors, it would be beneficial for both sensors to have identical spatial resolution and response times. However a high spatial resolution thermal sensor is very expensive whereas a simple and effective sensor can be made with just two thermal elements in conjunction with an optical lens and/or mirror arrangement to perform image segmentation and overlay functions. This invention provides a means and method to match the field of view (25, 26 and 27) by sectorisation (a-n) (a'-n') and sensor signal output processing (38) of a high resolution sensor (28) eg (visible wavelength) and a low resolution sensor (10) eg (thermal) to provide a low cost detection device which achieves a substantially higher performance than one which only logically combines the outputs of the two individual detectors.
Patent CA-2180124-A1 (CA)
Inventor: ZNAIDEN ALEXANDER PAUL
IPC: A61K8/00
Filed: 1995-01-09
Abstract: Cosmetic compositions are described wherein .alpha.-hydroxyacids, .alpha.-ketoacids and related compounds are formed into amine salts through neutralisation with a multi-amine functionalised polymer. Particularly preferred are glycolic acid and lactic acid salts of poly(ethylenimine).
Patent CA-2181226-A1 (CA)
Title: Motorized janitorial cart with accessories
Inventor: MOORE TERRY D
IPC: A47L11/10
Filed: 1996-07-15
Abstract: A janitorial cart is small, and narrow enough for use indoors, and will pass through conventional-width doorways. The cart is electrically powered, and the batteries are mounted very low so the lower center of gravity will stabilize the cart. The steering mechanism utilizes a single, rear wheel that can be turned about 90° in each direction to give the cart a small turning radius. Accessories can be mounted on the front and/or the rear of the cart. The preferred accessory for the front is a dust mop apparatus for dust mopping large floor areas, but it is contemplated that brushes, burnishers and carpet sweepers will also be used. The rear accessory is contemplated to be a container for materials or supplies.
Patent CA-2181715-A1 (CA)
Inventor: YEN SHAU-FONG
IPC: A61K9/00
Filed: 1995-02-09
Abstract: Disclosed is a sustained release liquid aqueous ophthalmic delivery system and a method of providing a slow and sustained release of ophthalmic treating agents to the eye of a mammal which comprises administering to the eye of a said mammal an effective amount of a homogeneous liquid aqueous ophthalmic pharmaceutical composition, of pH between about 3.0 and about 6.2, which is administrable in drop form and which comprises an ophthalmically effective concentration of a said ophthalmic treating agent and about 0.05 % to about 10 % by weight of the polymer chitosan; said polymer consisting essentially of (A) monomeric .beta.(14)-D-glucosamine linked units and of (B) monomeric .beta.(14)-N-acetyl-D-glucosamine linked units which are scattered randomly in the molecule of the polymer, the numerical proportions of A and B being from about 60 to about 99 % of A and about 1 to about 40 % of B, the viscosity rating being from about 3 to about 3000 cps; in which method, upon contact with the higher pH of the ocular fluid, said liquid formulation is converted to a stiff gel from which the ophthalmic treating agent is slowly released over a prolonged period of time.