baber/WOPTO huggingface dataset:
Patent CA-2063356-C (CA)
Inventor: ASHIZUKA NORIHIRO
IPC: G01C19/00
Filed: 1992-03-18
Granted: 2001-07-10
Abstract: A fiber optic rotation sensor includes a logic circuit which is supplied with an ambient temperature from a temperature sensor, a light output from an optical fiber sensing loop, and at least two correlation maps from a memory. The correlation maps are prepared at predetermined temperatures by light output values and angular velocities corresponding to the light output values. The logic circuit selects two correlation maps of two temperatures, between which the detected ambient temperature ranges, and provides an angular velocity in accordance with the two temperatures, the detected ambient temperature, and the light output by using the selected two correlation maps.
Patent CA-2075202-C (CA)
Title: Nonreturn valve, in particular for medical infusion appliances
Inventor: FORBERG HANS-JUERGEN
IPC: A61M5/168
Filed: 1991-11-16
Granted: 2001-07-24
Abstract: A nonreturn valve has a housing (1) provided with a central chamber (9) into which open an inlet channel (6) and an outlet channel (7) that may be separated by a seal-ing membrane (10) provided with a flow passage (18). The membrane (10) has a marginal part (16a) clamped in the housing (1), a central sealing part (16b) and a thinner annular wall (17) that links both parts (16a,16b). In order to obtain a nonreturn valve that has a reliable operation even at the smallest differential pressures, a central crater-like sealing formation (13,14), for example, is provided in the membrane (10). The inflow from the inlet channel (6) to the membrane (10) takes place outside the crater-like sealing structure (13,14) and the flow passage (18) of the membrane (10) is located within the crater-like sealing structure (13,14). The thinner annular wall (17) of the membrane (10),that generates a sealing pre-stress, has a shaped cross-section and its open junc-tures (17a,17b) adjacent to the marginal part and to the central sealing part (16b) of the membrane (10) are located at least approximately in the same plane, that coincides with the sealing plane, or is parallel thereto.
Patent CA-2075511-C (CA)
Title: Degradation of pesticides by ferric reagents
Inventor: PIGNATELLO JOSEPH J
IPC: C02F1/72
Filed: 1992-08-07
Granted: 2000-10-10
Abstract: A method for mineralizing pesticides, notably aromatic pesticides, using ferric ion in an acid aqueous solution at room temperature is disclosed. In a preferred embodiment, the ferric ion is employed in the presence of hydrogen peroxide; degradation occurs in the light or in the dark, although light accelerates the degradation. The method also is functional in the absence of hydrogen peroxide, but light and oxygen is required in this method. Preferred degradation methods are conducted in the presence of hydrogen peroxide and light, and in the absence of large concentrations of organic solvents, chloride, and sulfate.
Patent CA-2081292-C (CA)
Title: Process for the electrochemical recovery of bismuth from an ion exchange eluent
Inventor: BALTAZAR VARUJAN
IPC: C25C1/22
Filed: 1992-12-16
Granted: 1998-09-29
Abstract: A process  is  provided  for  the  recovery of bismuth from an ion exchange eluent solution consisting of at least 50% sulfuric acid maintained at a temperature of 95-100~C.      The   process   comprises   the   step   of electrowinning bismuth from the sulfuric acid solution in an electrochemical cell at a current density up to 30 A/m2 using an insoluble anode and a cathode that is impervious to the highly corrosive environment of hot sulfuric acid, for a time interval such as to reduce the bismuth content of the solution down to about 3-5g/L.
Patent CA-2081384-C (CA)
Title: Apparatus for extracting a substance in the divided state and for metering it out by volume
Inventor: PAJOT ALAIN D
IPC: B65G47/19
Filed: 1992-10-28
Granted: 2004-06-08
Abstract: The invention relates to apparatus for extracting a substance stored in the divided state in a silo and for metering out the powder or granular substance by volume. The apparatus comprises de-bridging means inside a converging bottom portion of the silo; a decompression enclosure disposed at the bottom of the silo and having a diameter greater than the diameter of the end section of the converging portion of the silo; and a drive assembly for driving the substance along a direction substantially perpendicular to the axis of the silo and in communication with the bottom end of the decompression enclosure, together with means for keeping the drive assembly loaded so long as the divided substance is flowing, which means are disposed in the zone where the decompression enclosure opens out into the drive means.
Patent CA-2081427-C (CA)
Title: Dimensionally accurate expanded foam casting pattern
Inventor: BISHOP GARY E
IPC: B29C44/44
Filed: 1992-10-26
Granted: 1997-08-05
Abstract: A method is disclosed for heating pre-expanded foundry pattern molding beads of polystyrene or the like in a stream of hot air to reduce the vapor-forming expansion agent content for the purpose of producing more dimensionally accurate, molded foam bead casting patterns.
Patent CA-2082260-C (CA)
Title: Wide screen television
Inventor: ALTMANSHOFER ROBERT DALE
IPC: H04N5/44
Filed: 1991-05-29
Granted: 2002-01-22
Abstract: A video display has a first format display ratio. A mapping circuit maps an adjustable picture display area on the video display. A signal processor generates first and second video signals from input video signals having one of different format dis-play ratios. A switching circuit selectively couples video signal sources as the input video signals. The signal processor can manip-ulate data from the input video signals by selective interpolation and cropping. A synchronizing circuit synchronizes the first and second signal processors with the mapping circuit. A selecting circuit selects as an output video signal between one of the first and second processed video signals and a combination of the first and second processed video signals. A control circuit controls the mapping circuit, the first and second signal processors and the selecting circuit to adjust in format display ratio and image aspect ratio each picture represented in the output video signal. One of the different format display ratios of the input video sig-nals can be the same as the first format display ratio of the video display. The mapping circuit can comprise a raster generating circuit for a cathode ray tube or an address matrix generator for a liquid crystal display.
Patent CA-2085000-C (CA)
Title: Reaction products of a boron compound and a phospholipid, and lubricants and aqueous fluids containing same
Inventor: LUCIANI CARMEN V
IPC: C10M173/02
Filed: 1992-02-27
Granted: 2002-10-08
Abstract: This invention relates to a composition prepared by reacting (A) a boron compound and (B) a phospholipid. These phos-pholipids are useful as lubricant additives for oil-base and water-base functional fluids. These materials act as anti-wear and/or extreme pressure agents. Further, these materials when incorporated into aqueous compositions have beneficial bacteriostatic ef-fects, i.e., controlling bacterial growth.
Patent CA-2085262-C (CA)
Title: Apparatus for cleaning postage meter printing indicia
Inventor: MURPHY CHARLES F III
IPC: G07B17/00
Filed: 1992-12-14
Granted: 1996-03-26
Abstract: A postage meter is insertable into and removable from a mail machine base receptacle.  The postage meter includes a shutter bar which is slidably mounted to the meter.  The shutter bar is positionable between a first position where the shutter bar is located opposite and blocking external access to the indicia plate of the meter and in a second position, the shutter bar is laterally positioned from said indicia plate.  The receptacle is pivotally mounted to mailing machine base and includes a shutter bar locking mechanism for engaging the shutter bar in the shutter bar's first position and for slidably positioning the shutter bar between the first and second position.  A brush assembly is mounted to the shutter bar for brushing or sweeping the indicia plate upon reciprocal displacement of the shutter bar between the first and second positions.
Patent CA-2089238-C (CA)
Inventor: APPLEBAUM PETER F
IPC: A61F9/00
Filed: 1993-02-10
Granted: 1997-11-18
Abstract: An aspiration control system includes a motor (18) and vacuum pump (22) which are controlled by a system  controller  (26),  in  accordance with  input commands to provide a precise,  continuously variable vacuum or negative pressure within a vacuum chamber (38) and surgical handpiece (70).  The resulting vacuum is proportional to the control signal sent from the system controller (26) to the motor (18).  A transducer (36) samples the vacuum output and produces a signal fed to the  system controller  (26).   The  signal  is compared with a variable input signal set by a potentiometer (34)  or other signal source activated by the input commands so that the transducer signal tracks the voltage source signal.  Therefore, the vacuum output of the vacuum pump and motor relates directly and predictably to the input commands.   In one embodiment the motor is a brushless DC motor.   The system may also include a pinch valve (76) provided on a fluid aspiration conduit communicating between the surgical hand-piece (70) and vacuum chamber (38) so that the fluid aspiration at the handpiece  (70)  may be  controlled independently from the negative pressure level created in the vacuum chamber (38).
Patent CA-2090307-C (CA)
Title: Empty/load changeover valve for railway car
Inventor: MCKAY ALBERT A
IPC: B60T15/18
Filed: 1993-02-24
Granted: 1996-04-02
Abstract: An empty/load changeover valve device for a railway car having a proportioning valve via which the car control valve supplies brake cylinder pressure.  The proportioning valve comprises a balance piston having equal opposing pressure areas and a combined supply and release check valve,  one pressure area of the balance piston being subject to air pressure supplied to the brake cylinder under all conditions of loading.   The opposing pressure area  of  the  balance  piston  is  either  pressurized  or depressurized depending upon the car being in an "empty" or "load"  condition,  thereby  establishing  either a  non-proportioning or a proportioning mode of brake control.          Integrating the release check valve with the supply valve so as to have a smaller effective pressure area,  the release check valve can be opened with low force to exhaust brake  cylinder pressure  during brake  release,  thereby making possible a reduced size empty/load changeover valve device.
Patent CA-2092786-C (CA)
Title: Synchronization method and device realizing said method
Inventor: MEYLEMANS PHILIPPE
IPC: H04L7/00
Filed: 1993-03-26
Granted: 1999-05-25
Abstract: The synchronization method realizes synchronization of a digital input data signal with a digital clock signal with which the data signal is rate synchronous.       The method consists in sampling the input signal, grouping these samples in successive sets of a plurality of successive ones of said samples, detecting in each of said sets possible value transitions of said samples, determining for each current transition in a set the theoretical position thereof in a corresponding set assumed to be obtained by sampling a nominal data signal which is the input data signal but with pulses having a width equal to the width of the clock signal period, and in using the latter theoretical position and the end value of the transition to generate the synchronized input data signal.
Patent CA-2092840-C (CA)
Title: Integrated optical package for coupling optical fibers to devices with asymmetric light beams
Inventor: CHO ALFRED YI
IPC: G02B6/30
Filed: 1993-03-29
Granted: 1999-11-23
Abstract: This invention embodies an integrated optical package including an optical component having an asymmetric modal output, and a lens integrated with the component for coupling to another optical component having a large modal area. The coupling is achieved by the use of a Polymeric Elongated Waveguide Emulating (PEWE) lens. In the exemplary embodiment the first optical component is a modulator, and the other optical component is an optical fiber. A facet of the modulator is etched by reactive ion etching (RIE) which allows integration of the PEWE lens on a common substrate. The lens is manufactured using a polymer film on a dielectric cladding layer. The fabrication relies on the remelt and reflow properties of polymer films to provide a smooth adiabatic mode contraction from a circular (optical fiber) mode (=6µm in diameter) to a semiconductor (=1µm) over a length of 250 µm. The PEWE lens permits coupling with an insertion loss of 0.5 dB and 80 percent coupling efficiency, even though the lens is butt-coupled to a fiber without any external lens. The PEWE lens allows the realization of better than 80 percent direct fiber butt-coupling efficiencies to semiconductor lasers, photodetectors, optical modulators, switches and amplifiers with a simultaneous order of magnitude relaxation of the alignment tolerances typically needed for the coupling of semiconductor devices with single-mode fibers.
Patent CA-2095317-C (CA)
Title: Granulated ammonium nitrate products
Inventor: OLIVER RAYMOND
IPC: B01J2/14
Filed: 1993-04-30
Granted: 2003-09-16
Abstract: A process for the production of explosives grade ammonium nitrate prill (EGAN) comprises the steps of (A). producing seed ammonium nitrate prill as substantially monosized prills; and then (B). fattening using melt/solution of ammonium or mixed nitrates, with drying and thermal treatments, the seed prill in an inclined rotating jacketed pan granulator or a cascade of such pans to produce a final fattened EGAN prill product preferably having at most about 4 mm diameter.
Patent CA-2097606-C (CA)
Inventor: VAN GEMERT BARRY
IPC: G03C1/685
Filed: 1991-11-27
Granted: 1997-09-16
Abstract: n décrit de nouveaux composés photochromiques réversibles de naphtopyrane à substituants sur la portion naphtyle, au niveau de l'atome de carbone qui jouxte l'atome d'oxygène du noyau pyrénique et, par exemple, un groupement acétoxy. On décrit également des substances hôtes organiques contenant ou recouvertes de ces composés. On décrit également des articles comme des lentilles cornéennes ou d'autres articles de matières plastiques transparentes incorporant les nouveaux composés de naphtopyrane ou certaines de leurs combinaisons avec des composés photochromiques complémentaires, p. ex., des composés du type spiro(indolino)-oxazine.
Patent CA-2099942-C (CA)
Title: Method and apparatus for drawing glass preform for optical fiber
Inventor: HOSHINO SUMIO
IPC: C03B20/00
Filed: 1993-07-06
Granted: 2004-10-26
Abstract: A glass preform for an optical fiber is effectively drawn by connecting dummy rods to both ends of the glass preform and connecting the dummy rods to fitting members.
Patent CA-2100294-C (CA)
Inventor: BOWMAN DAVID FREDERICK
IPC: B01D53/52
Filed: 1993-07-12
Granted: 2003-08-19
Abstract: Removing hydrogen sulphide from a gas (3) comprising contacting the gas (3) in a contactor (1) with an aqueous reactant solution (6) including a coordination complex of Fe(III) with a chelating agent to produce a purified gas (7) and spent aqueous solution (9) containing solid sulphur and having an increased content of coordi-nation complex of Fe(II) with the chelating agent, and regenerating the spent aqueous reactant solution (9) by contacting in a first contact vessel (10) the spent aqueous reactant solution (9) co-currently with air (13) to produce partly regenerated aqueous reactant solution (15) followed by contacting in a second contact vessel (18) partly regenerated aqueous reactant solution (15) counter-currently with air (21) to produce regenerated aqueous reactant solution (24) which is removed from the lower part of the second contact vessel (18).
Patent CA-2101578-C (CA)
Inventor: CAUPIN HENRI-JEAN
IPC: C02F1/00
Filed: 1993-07-29
Granted: 1999-01-12
Abstract: L'invention a pour objet l'usage des esters de l'acide undécylénique, à savoir des esters alkyliques, polyoxyalkyléniques renfermant 2 à 10 motifs oxyalkylène, alkyliques en C1-C12 et des esters de polyoxyéthylène, polyoxypropylène et poly(oxyéthylène)(oxypropylène) comme désodorisant des effluents de papeterie. L'invention concerne également des compositions caractérisées en ce qu'elles sont constituées soit d'un mélange d'au moins deux de ces esters, soit d'un de ces esters associé à un excipient acceptable.
Patent CA-2102523-C (CA)
Inventor: WALLING DAVID WILLIAM
IPC: A23L25/10
Filed: 1992-05-07
Granted: 1998-07-28
Abstract: The invention is a reduced fat nut or oilseed butter composition which contains: (a) from about 40 % to about 67 % nut solids, between 65 % and 80 % of said solids having a particle size less than 18 microns and a SPAN of greater than 2.5 and not more than 5.0; (b) from about 33 % to about 45 % oil; (c) from 0 % to about 3 % stabilizer; (d) from 0 % to about 40 % bulking agent; (e) from 0 % to about 8 % flavorant; and (f) from 0 % to about 3 % emulsi fier; where the product has a Casson plastic viscosity of between 2 and 15 poise and a yield value below 300 dynes per square centimete r. The invention also relates to a composition as described above which is whipped to contain dispersed gas bubbles, where at l east 90 % of the bubbles have a diameter less than 300 microns. Processes for making these compositions are also describe d.
Patent CA-2110171-C (CA)
Title: Composition for high pressure casting slip, high pressure casting slip and method for preparing the composition and slip
Inventor: SATO RITSU
IPC: C04B33/28
Filed: 1993-03-24
Granted: 1997-06-03
Abstract: An object of the present invention is to shorten the working time for high pressure slip casting.  There is provided a composition for high pressure casting slip essentially consisting of first starting powder forming a frame of a mold body and second starting powder forming the frame of the mold body and acting as a plastic agent, wherein the first and second starting powder is uniformly mixed in a dry condition.  "Slip" of a minimum water con-tent is easily prepared by the composition to effect opti-mal fluidity of the slip so that the water is removed from the slip in a short time during a casting process.
Patent CA-2111496-C (CA)
Title: Device for the implantation of a self-expanding endoprosthesis
Inventor: HOFMANN EUGEN
IPC: A61F2/95
Filed: 1993-12-15
Granted: 2004-09-28
Abstract: The endoprosthesis (1) is inserted under tension in a recess of a flexible inner catheter (6) and secured by means of a tube-shaped outer catheter To release the endoprosthesis (1) into a vessel, the outer catheter (6) is pushed back over the recess. The recess is formed by a connector piece (9) that connects a tip (7) to a piece of tubing of the inner catheter (6). The inner catheter (6) can be designed with a smaller outer diameter in the region of the recess than was previously the case with at least the same flexibility and resistance to buckling.
Patent CA-2113634-C (CA)
Title: Dental tray
Inventor: HART ADRIAN
IPC: A61K6/893
Filed: 1992-07-15
Granted: 1995-04-18
Abstract: A gel tray (I) for holding a medicament to be applied to the teeth and gums of a patient includes a handle (18) and an opposing buckle (20). In one embodiment, the buckle (20) includes a tongue portion (22) and a retainer strip (26) surrounding the tongue portion so as to define a narrow space (30) be-tween the tongue portion (22) and the retainer strip (26), the narrow strip hav-ing a width less than the thickness of the handle (18). The handle (18) has a tongue reception groove (18b) extending transverse to its length at a position such that the tongue reception groove (18b) is engaged by the tongue when the tray is folded. The tray can be combined with or preloaded with a treatment agent such as from 0.05 to 5 wt.% of a soluble fluoride, either in an acidic gel or a neutral.
Patent CA-2120226-C (CA)
Inventor: WATANABE MASAO
IPC: B60T8/172
Filed: 1994-03-29
Granted: 1997-12-30
Abstract: A brake pressure control apparatus for regulating a brake pressure for braking a wheel of a motor vehicle, including a device for  obtaining  a rotating  speed  of the  wheel,  a pressure regulator for regulating the brake pressure, on the basis of the the wheel wheel, a running speed of the vehicle and an optimum slip amount  of the wheel,  a device  for estimating a future speed of the wheel, on the basis of values of the wheel speed which have been obtained by the wheel speed obtaining device,  and a device for reflecting the future speed of the wheel on the determination of a point of time at which the wheel brake pressure is regulated by the pressure regulator.
Patent CA-2121870-C (CA)
Inventor: SAVASTANO LOUIS
IPC: A61K9/24
Filed: 1994-04-21
Granted: 2005-05-17
Abstract: An oral drug delivery device for delivering a drug either intermittently or to a pre-selected region of the gastro-intestinal tract, particularly to the colon, consists of an a solid core comprising an active agent coated with a delay jacket, then coated with a semi-permeable membrane which is optionally drilled to provide a release orifice, and then optionally further coated with an enteric material. The device delivers substantially all of the active agent to the targeted site.
Patent CA-2122278-C (CA)
Inventor: AMAGAI MASAZUMI
IPC: C09J7/38
Filed: 1994-04-27
Granted: 2005-04-12
Abstract: Disclosed is an adhesive sheet for wafer comprising a substrate film and a radiation curable adhesive layer formed thereon, said adhesive sheet being used in a process for preparing a semiconductor device comprising the steps of adhering a back surface of a wafer, a front surface of which has been formed a circuit, onto the radiation curable adhesive layer, dicing the wafer into chips, rinsing, drying, irradiating the adhesive layer with radiation to cure said adhesive layer, expanding the adhesive sheet if necessary to make the chips apart from each other, then picking up the chips, mounting the picked chips on a lead frame, bonding, and molding to give such a structure that the back surfaces of the chips are partially or wholly in contact with a package molding resin, wherein the radiation curable adhesive layer comprises 100 parts by weight of an acrylic adhesive composed of a copolymer of an acrylic ester and an OH group-containing polymerizable monomer and 50 - 200 parts by weight of a radiation polymerizable compound having two or more unsaturated bonds, and the radiation curable adhesive layer has an elastic modulus of not less than 1 × 10 9 dyn/cm2 after curing by irradiation with radiation.
Patent CA-2131237-C (CA)
Inventor: CHUDY ANDRZEJ M
IPC: B65B13/30
Filed: 1994-08-31
Granted: 1998-10-13
Abstract: A strapping tool is disclosed of a type used to apply a steel strap in a tensioned loop around a package and to join the strap via a series of interlocking joints comprising interlockable shoulders punched into overlapped ends of the strap.  A base of the strapping tool extends longitudinally and defines a pair of recesses.  A frame upstanding from the base is mounted integrally to the base.  In a mechanism for admitting the overlapped ends into the tool, for retaining the overlapped ends, and for releasing the overlapped ends from the tool, a pair of latches having hooked ends are mounted pivotably to the base so as to be pivotable between closed positions wherein the latches are positioned with the hooked ends extending into the recesses to retain the overlapped ends between the latch and the base and between the hooked ends and the frame and opened positions wherein the latches are displaced angularly from the closed positions to admit the overlapped ends into the tool and to release the overlapped ends from the tool.  The latches are biased into the closed positions.  Coacting elements including a lever, which can be manually squeezed toward an actuating handle of the strapping tool, and a camming member, which is arranged to cam the latches, are provided for pivoting the latches from the closed positions into the opened positions.