baber/WOPTO huggingface dataset:
Patent CA-2259548-A1 (CA)
Inventor: FERRARO EUGENE L
IPC: G01H9/00
Filed: 1999-02-09
Abstract: A technique for interrogation of fiber optic interferometric sensors wherein an optical signal is modulated by an array of fiber optic sensors in response to acoustic pressure. Modulated signals (channels) from each sensor are multiplexed onto a single fiber optic cable and the multiplexed signal is input to a polarization diversity detector having at least two outputs. The optical signal is converted into a digital, electrical signal. A plurality of digital down converters demultiplex and demodulate the separate channels and output in-phase data and quadrature phase data for each of the signal channels. A system controller connects to the digital down converters and to a calibration digital down converter. The calibration digital down converter, controlled. by the system controller, mimics an operation of each digital down converter in turn in order to determine optimal digital down converter settings for each digital down converter. The system controller updates the optimal settings for each digital down converter such that the digital down converters are dynamically calibrated according to the optimal settings. The in-phase and quadrature phase data output of the digital down converters are then processed with an acoustic signal processor.
Patent CA-2262567-A1 (CA)
Inventor: HOLDEN ROBERT L
IPC: B24D3/00
Filed: 1997-09-05
Abstract: A molded bonded abrasive grinding wheel adapted for relatively rough grinding operations is provided with a plurality of protuberances spaced in a predetermined pattern along the peripheral surface thereof and extending substantially orthogonally therefrom to define a textured grinding face. The protuberances are molded integrally with the grinding wheel and are perfomed by placing a perforated, or textured annular insert in a grinding wheel mold during molding wherein the insert is molded in-situ about the peripheral surface of the grinding wheel. The insert is removed from the peripheral surface after molding or during grinding to expose the protuberances defined by the perforations of the insert.
Patent CA-2264424-A1 (CA)
Inventor: PERRIN HENRI
IPC: B62K27/12
Filed: 1999-03-02
Abstract: A coupling device for coupling a leading bicycle to a trailing bicycle which includes an elongated assembly having a first connecting device located at one end of the elongated assembly for connecting to the shaft of a handle bar of the trailing bicycle, a second connecting device located at an opposite end for connection to a leading bicycle about a seat post thereof, and an interconnecting portion extending between the first connecting device and second connecting device, the interconnecting portion having a rigid segment and a flexible segment, the rigid segment having a telescopic arrangement for length adjustment, the flexible segment permitting movement in all planes including a torsional or rotational movement while being substantially inextensible in the longitudinal axis. The arrangement permits both bicycles to be ridden at the same time in a tandem type arrangement.
Patent CA-2266217-A1 (CA)
Inventor: PADOVANI PIETRO
IPC: B29C51/42
Filed: 1999-03-18
Abstract: Process for the selective zonal heating of a thermoformable sheet material or matrix, a process which provides for, in sequence, appropriately identifying at least one marked and/or decorated area having a well-defined perimeter on said sheet material, advancing said sheet material stepwise along a working track, heating the said sheet material along said working track only in relation to one side of one or a group of areas for thermoforming leaving the rest of the sheet material or matrix which is not heated relatively cold and therefore not subject to thermal deformation, and stepwise thermoforming along the said working track only in those areas so heated located in the said cold matrix.
Patent CA-2266953-A1 (CA)
Title: Nonaqueous drag reducing suspensions
Inventor: LEE YUNG N
IPC: C09K3/00
Filed: 1997-09-12
Abstract: This invention relates to improving the flow of flowing streams of hydrocarbons, such as petroleum or finished products, in a conduit such as a pipeline. The present invention also relates to a stable, nonagglomerating nonaqueous suspension suitable for improving flow of hydrocarbons in conduits, particularly finished product hydrocarbons in conduits.
Patent CA-2267265-A1 (CA)
Title: Electrochemical processing of liquid such as water
Inventor: STOLLARD ROSALYN JEAN
IPC: C02F1/00
Filed: 1997-09-29
Abstract: A method of electroprocessing liquid such as water comprises providing an electrolyser with cathode and anode chambers, each having respective electrodes. An electric current source is provided for the electrodes. Liquid is passed through an inlet of the cathode chamber (76) and passes from the cathode chamber at least partly to an inlet of the anode chamber (80) with the remainder passing along a further flow path to an outlet (88). Apparatus is provided for carrying out the method including a hydraulic valving arrangement to allow control of flow of liquid from cathode to anode and along the further flow path.
Patent CA-2269618-A1 (CA)
Title: Method of transferring funds employing a three-node real-time electronic interlock
Inventor: MCSWEENEY JOSEPH C
IPC: G06Q20/10
Filed: 1997-10-21
Abstract: A method of transferring funds electronically, is per-formed by a group of N computers X(1) thru X(N) which are intercoupled to each other, and to another computer Y, by a communication channel. Each computer of the group includes multiple customer accounts, and the computer Y includes a net account for each computer of the group. To initiate the transfer of funds between two customer accounts, a customer sends an input request to one of computers X(i) of the group; and this in-put request specifies that funds F(z) be transferred in a particular direction between a customer account A(r) in computer X(i) and a customer account A(s) in another computer X(j) of the group.  For each input request that is received by computer X(i), a respective sequence of electronic control messages is sent on the communication channel among the computers X(i), X(j) and Y.  By this sequence of control messages, computer X(i) tests the status of customer account A(r); computer X(j) tests the status of customer account A(s); and computer Y tests the status of the net accounts for computers X(i) and X(j). If all of the tests by the computers X(i) and X(j) are satisfied, then those computers both authorize computer Y to transfer the funds F(z) between the net accounts for computers X(i) and X(j); and if all of the tests by computer Y are satisfied, then computer Y authorizes the computers X(i) and X(j) to transfer the funds F(z) between the customer accounts A(r) and A(s). This authorization from all three computers eliminates the need to reverse a transfer of funds; and consequently, the transferred funds are available for withdrawal immediately after the sequence of messages is com-pleted successfully.
Patent CA-2269872-A1 (CA)
Title: A method of manufacturing a semiconductor optical waveguide array and an array-structured semiconductor optical device
Inventor: KUDO KOJI
IPC: H01S5/0625
Filed: 1999-04-22
Abstract: In a method of manufacturing a semiconductor optical waveguide array in an ultra-high integration, the device yield per wafer is considerably increased and uniform and improved characteristics are obtained. In this method, there is manufactured a semiconductor optical waveguide array including a plurality of optical waveguides in an array structure in stripe-shaped growth regions enclosed by dielectric thin films on a substrate. The waveguides are fabricated through a selective crystal growth process and include a semiconductor multilayer structure including a quantum well layer or a semiconductor multilayer structure including a bulk layer. Namely, there is formed a plurality of stripe-shaped growth regions elongated parallel to each other, the regions being enclosed with a dielectric thin film. In each growth region, a semiconductor multilayer structure is selectively grown by metallo-organic vapor phase epitaxy (MOVPE). In the selective growth, the growth regions are parallel to each other with an interval therebetween, the interval being less than a diffusion length of a source material in a reactive tube during the crystal growth. Assuming that the dielectric thin film arranged between the respective growth regions has a width Wa and a first outer-most dielectric thin film and a second outer-most dielectric thin film arranged respectively outside of outer-most ones of the growth regions respectively have widths W m1 and W m2, there is satisfied a relationship of W m1 > Wa and W m2 > Wa.
Patent CA-2271189-A1 (CA)
Inventor: SHORE T MICHAEL
IPC: B21B31/24
Filed: 1999-05-06
Abstract: A housingless roll stand has a pair of work rolls supported between bearing chocks for rotation about parallel axes. The bearing chocks are mechanically engaged by nuts which in turn are threadedly engaged by opposite hand screw segments on spindles. The spindles serve both to effect symmetrical roll parting adjustments, and to provide a short stress path loop for absorbing roll separating forces during rolling. The nuts and associated adjusting spindles are separable from the bearing chocks, thus enabling them to remain as permanent on line fixtures when making roll changes.
Patent CA-2271329-A1 (CA)
Title: System for mixing bulk windshield washer liquid for both cold and warm climates
Inventor: CAIN WILLIAM O
IPC: B01F3/08
Filed: 1999-05-07
Abstract: A system for mixing bulk windshield washer liquid for both cold and warm climates utilizing a pair of mixers and means for selectively actuating these mixers.  A high concentrate educter is used to mix the warm weather mixture and a high volume educter is used to mix the cold weather mixture. A three way water valve is used to direct water to the high concentrate educter and to the high volume educter. A float valve is used to maintain an essentially constant level of windshield washer liquid within the system. Detergent and alcohol are drawn from their respective storage containers solely in response to fluid flow through the educters, thereby eliminating the need for electrical pumps or metering equipment.
Patent CA-2272364-A1 (CA)
Title: Membranes semi-permeables polysulfones filees par fusion et leurs procedes de fabrication
Inventor: NGUYEN THANH
IPC: C08L81/06
Filed: 1997-12-30
Abstract: L'invention concerne, en premier lieu, une composition qui permet de fabriquer une membrane semi-perméable homogène. Ladite composition comprend (1) un composé polysulfone, (2) un solvant, tel que sulfolane, antipyrine, .delta.-valérolactam, diéthyl phtalate et des mélanges de ces produits, et (3) une substance non solvante, telle que poly(éthylène glycol), di(éthylène glycol), tri(éthylène glycol), glycérol et des mélanges de ces produits. Selon un autre aspect, la présente invention concerne des procédés permettant de fabriquer des membranes semi-perméables en mélangeant de façon homogène la composition de composé polysulfone, le solvant et la substance non solvante, en faisant fondre ladite composition et en filant par fusion la composition fondue. Selon un autre aspect encore, la présente invention concerne des membranes semi-perméables, homogènes et filées par fusion, particulièrement utiles pour les procédés de séparation de liquide, tels que, mais pas exclusivement, la microfiltration, l'ultrafiltration, la dialyse et l'osmose inverse.
Patent CA-2274266-A1 (CA)
Inventor: LANG HEINRICH
IPC: B60R1/08
Filed: 1999-06-08
Abstract: A mirror pane for a front surface mirror, suitable for rearview mirrors on motor vehicles, includes a front side and a back side, a reflection coating applied to the front side of a carrier plate, and a transparent, scratch resistant protective coating applied on the front side as the outermost coating on the reflection coating. The protective coating may be dirt and water repellent, and may be an inorganic-organic nano-composite, gradient coating with fluoridized organic side chains.
Patent CA-2275721-A1 (CA)
Inventor: COCKRELL ERIC
IPC: H04N7/173
Filed: 1997-12-19
Abstract: Multimedia distribution and broadcast systems and related processes are provided for transmitting multimedia contents and control information from a central uplink facility to a remote downlink via a satellite. The system is preferably implemented in order to generate sequences of multimedia that are broadcast from the remote downlink facility to viewers. The display arrangements of the multimedia sequences are varied and customized by each downlink facility using the control information in order to better inform and entertain viewers.
Patent CA-2275816-A1 (CA)
Inventor: HALLER DAVID K
IPC: F01C1/02
Filed: 1999-06-21
Abstract: A scroll compressor having a suction chamber into which fluid is received substantially at suction pressure and a discharge chamber from which the fluid is discharged substantially at discharge pressure, including mutually engaged fixed and orbiting scroll members, in fluid communication with the suction and discharge chambers, an intermediate pressure chamber defined in part by one of fixed and orbiting scroll members, an oil reservoir, an electric motor, and a shaft operably coupling the motor and the orbiting scroll member. The shaft is provided with a longitudinal passageway extending longitudinally therethrough, the longitudinal passageway in fluid communication with the oil reservoir and provided with oil therefrom. The shaft is provided with a first passage in fluid communication with the longitudinal passageway and which extends substantially laterally outward from the longitudinal passageway to a radially outer surface of the shaft. A roller is disposed about the shaft radially outer surface, the orbiting scroll member linked to the shaft through the roller. The roller is provided with inner and outer circumferential surfaces and a second passage extending therebetween, the first and second passages in fluid communication, whereby oil from the oil reservoir is provided to the roller outer circumferential surface through the longitudinal passageway and the first and second passages. A bearing is disposed between the roller outer circumferential surface and the orbiting scroll member. An oil receiving space is provided adjacent the bearing, the oil receiving space defined in part by a surface provided on the orbiting scroll member which is opposite its substantially planar surface, an axially facing surface of the roller, and an end surface of the shaft. The intermediate pressure chamber and the oil receiving space are substantially out of fluid communication. Oil is provided from the second passage to the oil receiving space through the bearing. A third passage extends between the oil receiving space and an intermediate pressure space between the fixed and orbiting involute wrap elements, and oil is provided to the intermediate pressure space from the oil receiving space through the third passage.
Patent CA-2276370-A1 (CA)
Title: Dispositif de detection d'inversion de cellules dans des batteries rechargeables
Inventor: GOW PHILIPPE H
IPC: G01R31/00
Filed: 1998-01-05
Abstract: Cette invention porte sur un dispositif de contrôle d'un bloc-batterie possédant plusieurs batteries rechargeables connectées en série. Ce dispositif comporte un organe de détection d'inversion de cellules ainsi qu'un équipement de protection du bloc-batterie en cas de détection d'inversion de cellules.
Patent CA-2276406-A1 (CA)
Title: High oleic acid electrical insulation fluids and devices containing the fluids
Inventor: OOMMEN THOTTATHIL V
IPC: C10M105/42
Filed: 1998-01-05
Abstract: High oleic acid triglyceride compositions that comprise fatty acid components of at least 75 % oleic acid, less than 10 % diunsaturated fatty acid component; less than 3 % triunsaturated fatty acid component; and less than 8 % saturated fatty acid component; and having the properties of a dielectric strength of at least 35 KV/100 mil gap, a dissipation factor of less than 0.05 % at 25 ~C, acidity of less than 0.03 mg KOH/g, electrical conductivity of less than 1 pS/m at 25 ~C, a flash point of at least 250 ~C and a pour point of at least -15 ~C are disclosed. Electrical insulation fluids comprising the triglyceride composition are disclosed. Electrical insulation fluids that comprise the triglyceride composition and a combination of additives are disclosed. Electrical apparatuses comprising the electrical insulation fluids and the use of electrical insulation fluids to provide insulation in electrical apparatuses are disclosed. A process for preparing the high oleic acid triglyceride composition is disclosed.
Patent CA-2278921-A1 (CA)
Title: Frameless access door
Inventor: SZYJKOWSKI JERZY
IPC: E06B3/72
Filed: 1999-07-26
Abstract: An access door incorporating a hinge for installation without a frame, in openings in paneling and brick or concrete structures of building constructions, special purpose vehicles, boats, ships etc. The said frameless access door comprises an integrated or attached hinge, preferably having the mounting flange beat inwards for easy alignment with a stud or the edge of an opening. The opposite side incorporates one or more holes for fastening of the opening side, using a one or more screws, which should be adequate to the material in which the opening is made. This access door may be used for all different shapes of openings in almost all kinds of construction materials. This access door incorporates the rigidness and simplicity of installation, provides for easy multiple access found in common access doors, along with clean, esthetic look and low cost of production.
Patent CA-2280410-A1 (CA)
Title: Water valve for dental handpiece
Inventor: LACHAPELLE CLAUDE
IPC: A61C1/00
Filed: 1999-08-11
Abstract: The water valve links a dental handpiece to its tubing. The tubing conventionally has a high-pressure air tube in which air will flow when the handpiece is selectively activated, a cooling water tube for cooling the handpiece head and the patient's tooth during use of the handpiece head, a cooling air tube for converting the cooling water flow into an atomized water spray, and a discharge tube, in which part of the high-pressure air flow are carried away from the dental handpiece. The water circulation device includes a valve which has four inner conduits each operatively linking the respective tubes to the dental handpiece. Furthermore, a bypass channel is formed in the valve, between the valve member water conduit and discharge conduit. A piston is movable in the bypass channel, between a first unobstructive position in which the water is free to flow from the water conduit into the discharge conduit, and a second obstructive position in which the piston blocks in a fluid-tight fashion the bypass channel, to prevent the water from flowing into the discharge conduit. A spring continuously forces the piston towards its first unobstructive position. Thus, in the handpiece inoperative condition, when no high-pressure air flow runs through the high-pressure air conduit, the water is free to flow in the valve from the water conduit into the discharge channel, thus not reaching the handpiece and continuously flowing to prevent the water from stagnating. When the handpiece is activated, the high-pressure air flow forces the piston through an air channel communicating with the piston channel, against the action of the spring towards its second limit position, thus blocking the bypass channel and allowing the water to flow conventionally into the handpiece.
Patent CA-2280577-A1 (CA)
Title: Acoustic ink printing method and system for improving uniformity by manipulating nonlinear characteristics in the system
Inventor: HADIMIOGLU BABUR B
IPC: B41M5/00
Filed: 1999-08-23
Abstract: An acoustic ink method and system are provided for improving the uniformity in an acoustic ink printing system by manipulating nonlinear characteristics of the system. The method includes operating the system at a power level that is above the power level at which the nonlinearity of the system is initiated.
Patent CA-2282184-A1 (CA)
Inventor: RUNGE FRANK
IPC: A23L33/105
Filed: 1999-09-10
Abstract: The invention relates to stable, pulverulent lycopene formulations, comprising lycopene having a degree of crystallinity of greater than 20%, processes for their preparation and their use as an additive to foodstuffs, cosmetics, pharmaceuticals and animal feedstuffs.
Patent CA-2282876-A1 (CA)
Title: Method and apparatus for transmitting an internet protocol (ip) packet within a fiber optic network
Inventor: SAUNDERS ROSS ALEXANDER
IPC: H04B10/556
Filed: 1999-09-20
Abstract: An embodiment includes an optical source, an optical receiver, and an interconnecting optical fiber. A data sequence is received and encoded or formatted as an IP packet using an encoding format capable of returning a. signal representing the IP packet to a predetermined value at the beginning of each bit period of the IP packet at a physical layer of the network. The encoded IP packet is then transmitted directly over an optical layer of the network without adapting the IP packet to another encoding format or using an adaptation layer in the network (e.g., at a data link layer or higher). The optical receiver receives the IP packet and then a clock signal is extracted without the overhead and costs associated with additional adaptation or encoding of the IP packet. When the optical source is in an idle state, a mark-hold state (more generally called a filler signal) is formatted with the same encoding format and transmitted to the optical receiver directly over the optical layer in order to maintain a synchronous clock during the idle state.
Patent CA-2284622-A1 (CA)
Inventor: NIKIFOROV THEO T
IPC: B01D61/56
Filed: 1998-03-30
Abstract: L'invention concerne des procédés servant à améliorer le transport et la direction de matériaux dans des systèmes fluidiques, ce qui consiste à mettre en application des systèmes d'écoulement électro-osmotiques (E/O), afin d'exercer une influence sur le transport et la direction de ces matériaux. Ces procédés sont basés généralement sur une concentration efficace d'au moins un composé zwitterionique dans le fluide contenant le matériau à transporter ou à diriger.
Patent CA-2284804-A1 (CA)
Inventor: SIMON CURTIS J
IPC: B60P1/43
Filed: 1999-09-30
Abstract: A ramp assembly (20) for mounting in a low floor bus (22) or other vehicle. The ramp assembly (20) includes a rectangular enclosure (24) that fits underneath the chassis of the low floor bus (22). The ramp assembly (20) includes a reciprocating mechanism (26) for moving a ramp platform (28) between a fully deployed position and a fully stowed position. During this movement, the reciprocating mechanism (26) raises the trailing end of the ramp platform (28) in one translational movement with the extension of the ramp platform., such that the trailing end of the ramp platform, when deployed, is raised to the floor level of the low floor bus (22).
Patent CA-2286002-A1 (CA)
Title: Gaz syringe and package therefor
Inventor: DEJUAN EUGENE M D JR
IPC: A61M5/178
Filed: 1998-04-10
Abstract: A unit dose, gas-filled syringe (12) is provided which is filled with a gas and packaged in a gas barrier material (10) prior to use to increase shelf-life, that is, to minimize gas leakage and dilution of the contents of the syringe. The syringe (12) is filled with a selected gas and sealed inside a container (10) made from a high gas barrier material.  The container is also filled with the selected gas. The container material is selected to have a gas transmission rate sufficient to prevent the selected gas from diffusing out of the container into the atmosphere. The volume of the gas in the container is greater than the atmospheric pressure to prevent the atmospheric contaminants from entering the container and syringe.