baber/WOPTO huggingface dataset:
Patent CA-2023491-C (CA)
Title: Making rotor and stator pole assemblies
Inventor: BURNS WILLIAM
IPC: H02K15/02
Filed: 1990-08-17
Granted: 1995-09-26
Abstract: Complementary laminations for a stator pole assembly and a cooperating rotor pole assembly of an electric motor or generator are produced simultaneously from a plate of magnetic material. The plate is stamped to produce an outer peripheral edge corresponding in shape to the exterior of an annular stator yoke and to produce a central aperture shaped to be received by an indexing element of an indexing table. The plate is then repeatedly indexed about its centre point in equal angular increments and a punch is displaced in areciprocating rectilinear fashion synchronized with the indexing to punch a multiplicity of identical apertures equally-spaced circumferentially. The apertures are shaped to define internal edge surfaces in the plate correspondingin shape to radially inner surfaces of the stator yoke and to radially outer surfaces of a central hub of the rotor pole assembly and to define a multiplicity of identical radial webs. The multiplicity of webs is cut with a circular punch such that the plate is divided into a stator pole assembly lamination with radially-inward projections corresponding in shape to stator poles and a rotor pole assembly lamination with radially-outward projections corresponding in shape to rotor poles.
Patent CA-2025641-C (CA)
Title: Oleopneumatic intensifier cylinder
Inventor: WOLFBAUER MICHAEL H III
IPC: F15B11/032
Filed: 1990-09-18
Granted: 1999-05-11
Abstract: An oleopneumatic load intensifier apparatus for creating a rapid advance of a tool carrying piston rod followed by slow advance of the piston rod at an increased load.  The apparatus has a master cylinder and an actuating cylinder that can assume different positions with respect to the master cylinder while maintaining fluid communication therewith.  An enclosed hydraulic system is shared by the master and actuating cylinders.  Pneumatic pressure actuates a piston within the master cylinder that causes a rapid advancement of a hydraulically fed piston within the actuating cylinder, causing a piston rod and a tool associated therewith to contact a workpiece.   Pneumatic pressure then causes a piston and associated piston rod, located in the master cylinder, to increase the hydraulic pressure in the line to the hydraulically fed piston located within the actuating cylinder, thus, increasing the load delivered to the workpiece.
Patent CA-2027251-C (CA)
Title: Tread buffing method and apparatus
Inventor: MAJERUS NORBERT
IPC: B24B5/36
Filed: 1990-10-10
Granted: 2003-03-18
Abstract: A method and apparatus for buffing a tread is described. The method comprises mounting a tread on an apparatus capable of buffing the casing engaging surface of said tread, the apparatus buffing the tread such that the grooves are formed on the buffed tread surface. The grooves angularly intercept a tread edge.
Patent CA-2028293-C (CA)
Title: Method for treating zinc-containing sulfate solution
Inventor: BOATENG DANIEL A D
IPC: B01D61/44
Filed: 1990-10-23
Granted: 1996-07-16
Abstract: There is provided a method for treating zinc-containing sulfate solutions which comprises an acid removal for the recovery of a substantially pure sulfuric acid solution and a solution low in acid and containing the zinc and metal impurities from the sulfate solution.  The acid removal is carried  out  by  a  membrane  process  that  consists  of dialysis,  electrodialysis  or  dialysis  integrated  with electrodialysis.  The dialyzate or diluate is subjected to a   dual-circuit,   side-by-side,   simultaneous   solvent extraction of zinc and sulfuric acid.   In one circuit sulfuric acid is extracted from the dialyzate or diluate and the raffinate from the zinc extraction with an amine-containing extractant.  Acid is stripped from the loaded organic  with  water  or  an  alkaline  substance,  and  is recovered as sulfuric acid or as a sulfate, preferably as ammonium sulfate.  In the other circuit, zinc is extracted from the raffinate from the acid extraction with an organic phosphoric-,  phosphinic-,  phosphonic- or  thiophosphinic acid-containing extractant.  The zinc is stripped from the loaded  organic  with  acid,  and  is  recovered  as  a concentrated zinc sulfate solution.  A residual solution substantially containing the impurities is removed from the process.  The extraction and stripping may be carried out in one or more stages.
Patent CA-2031939-C (CA)
Title: High density cordierite ceramic articles formed from specified zeolites
Inventor: BEDARD ROBERT L
IPC: C01B33/26
Filed: 1990-12-11
Granted: 1997-09-16
Abstract: A substantially crystalline cordierite ceramic article which is especially suited for electronic applications is formed by taking a shaped article which has been formed either from a magnesium exchanged zeolite powder or from a calcined product thereof, the zeolite selected from the group consistig of phillipsite, harmotome, gismondine, zeolite B, zeolite ZK-19 and zeolite W, and sintering theshaped article at a temperature of about 1,000°C to 1,350°C for about 1 to about 6 hours. The magnesium exchanged zeolite has a SiO2/Al2O3 ratio of about 2.3 to about 2.8 and a sodium content less than 0.5 weight percent. The ceramic articlethat is formed has a substantially crystalline cordierite phase and has a density of at least 90% of its theoretical density. A preferred process involves calcining themagnesium exchanged zeolite powder at a temperature of about 600-800°C tocollapse the zeolite framework and give upon sintering a cordierite ceramic article which is substantially crack free. A preferred magnesium exchanged zeolite is magnesium exchanged zeolite B.
Patent CA-2033872-C (CA)
Inventor: APPRIOU ALAIN
IPC: G01C21/00
Filed: 1991-01-09
Granted: 2000-10-03
Abstract: Le système embarqué, pour déterminer la position d'un véhicule aérien, comprend une première mémoire contenant les caractéristiques générales de différents types d'amers discrets et une seconde mémoire contenant la position géographique de tels amers sur le territoire à survoler, un dispositif pour extraire, des signaux délivrés par des moyens sensibles, les caractéristiques générales des différents types d'amers discrets se trouvant sur le territoire en cours de survol, et un dispositif pour calculer à partir des signaux délivrés par les moyens sensibles les positions relatives du véhicule par rapport aux amers reconnus, qu'il adresse à des moyens à filtre de KALMAN.
Patent CA-2038577-C (CA)
Title: Utilization and delivery of enzymes
Inventor: BEGGS THOMAS S
IPC: A61K38/44
Filed: 1991-03-19
Granted: 2001-06-19
Abstract: One or more vehicles, which may be acceptable to enter the mouth, contain at least one of two cooperating enzymes plus an antibody or antibody fragment which binds to a target site. There are means to attach both enzymes to such antibodies or fragments thereof, so as to bind the enzymes to the vicinity of the target.      One enzyme generates an intermediate which is used by the other enzyme to generate a substance, preferably hypohalite, which acts at the target site.
Patent CA-2041099-C (CA)
Title: Lawn mower height-adjust systems
Inventor: HESS KRISTOFFER A
IPC: A01D34/74
Filed: 1991-04-24
Granted: 1996-01-30
Abstract: Lawn mower height-adjust systems include three embodiments.  Two permit the user to adjust the position of the deck relative to each wheel individually.  The third permits the user to adjust the positions of all four wheels simultaneously, aided by a counterbalance system.  A modification of the third embodiment is available to automatically bypass the height-adjust mechanism in the event an abnormally high load is placed on the deck.  One of the two individual systems permits an operator to adjust the position of a respective wheel simply by removing a single nut and washer from an axle bolt.  The second individual height-adjust system permits the operator to adjust the height of an individual wheel by using one hand, and without having to disassemble the mechanism.  The system which adjusts all four wheels simultaneously links front and rear axle subassemblies with a connecting rod, and indexes all four wheels simultaneously through a release handle which is recessed in a cavity formed in the lawn mower deck.  When the operator lifts the release handle, he or she may simultaneously grasp a portion of the deck with the same hand and easily raise or lower it to a desired position. A single unitary plastic deck is the foundation for each of the three height-adjust systems, thereby significantly reducing the cost otherwise incurred by manufacturing three separate types of lawn mowers.
Patent CA-2043546-C (CA)
Title: Sealing device for a rotating propeller shaft of a ship
Inventor: PIETSCH GUENTER
IPC: B63H23/32
Filed: 1991-05-30
Granted: 1997-10-21
Abstract: A lubrication system for a rotatable propeller shaft of a ship.  The system includes a seal for sealing lubricant adjacent the shaft and at least one annular chamber defining a hose-shaped inflatable body.  A ring line supplies a fluid heat transfer medium, such as air, to the at least one annular chamber.  The heat transfer medium is heated by a heat source.  The heat transfer medium may also act as a pressure medium to inflate the inflatable body.  The heat transfer medium can be circulated so that when the propeller shaft is stationary in an extremely cold liquid medium, such as icy sea water, the inflatable body is inflated by the heat transfer medium so that the inflatable body expands to within a major portion of the at least one annular chamber while, simultaneously, heating lubricant in the remaining portion of the annular chamber. Such heating causes the lubricant viscosity to approximately equal the viscosity of the lubricant when the propeller shaft rotates and the lubricant is not heated. During rotation of the propeller shaft, the inflatable body is deflated out of the annular chamber.
Patent CA-2052615-C (CA)
Title: Pharmaceutical composition in gel form in a dispensing package
Inventor: TACHON PIERRE
IPC: A61K47/30
Filed: 1991-10-02
Granted: 2001-01-16
Abstract: An active principle normally presented as a bottled syrup is prepared in a pseudoplastic gel-form excipient which is packed in a dispenser pack incorporating a metering pump so that the therapeutic dose is delivered by one or two depressions of the pump per therapeutic dose.      This method of presentation provides for exact doses and is easy, hygienic and safe to use, particularly for babies, nursing infants, young children and geriatrics.
Patent CA-2055105-C (CA)
Title: Multi-channel digital receiver for global positioning system
Inventor: FENTON PATRICK
IPC: H04B1/707
Filed: 1991-11-07
Granted: 1995-05-02
Abstract: A receiver for pseudorandom noise (PRN) encoded signals consisting of a sampling circuit and multiple channel circuits, with each channel circuit including a carrier and code synchronizing circuit and multiple digital correlators with dynamically adjustable code delay spacing.   The sampling circuit provides high-rate digital samples of the incoming composite signal to each receiver channel.  Within each channel, the synchronizing circuit detects cycle slips in a locally generated carrier reference signal as well as phase drift in a locally generated PRN code signal.  The correlators compare the digital samples with a locally generated PRN code to produce early, late, and/or punctual correlation signals which are used to adjust the local PRN code.  A non-linear sampling technique may be used to provide increased sensitivity in the presence of continuous wave interfering signals.
Patent CA-2065730-C (CA)
Title: Gels
Inventor: SUTHERLAND ALISTAIR A P
IPC: C08L53/00
Filed: 1990-10-02
Granted: 2002-01-01
Abstract: Gels of hard-elastomer-nard block copolymers with at least 300 parts of extender liquid per 100 pans of the copolymer contain at least 50 parts (per 100 parts of copolymer) of a stabilising additive which resists migration of PVC plasticisers into the gel when in contact with a plasticised PVC article. Styrene-ethylene-butylene)-styrene triblock copolymers with organic phos-phate stabilisers are preferred, these stabilisers,tending to raise the gel softening temperature.
Patent CA-2066372-C (CA)
Title: Artificial mulch chips
Inventor: HEDGES GARY W
IPC: A01G13/02
Filed: 1992-04-16
Granted: 1995-07-18
Abstract: Chip-like mulching material having a specific gravity greater than 1 is formed from various plastics. The surface of the chips is embossed with a design providing additional surface area, thereby facilitating the diffusion to the surrounding environrnent of fugitive active ingredients when the same are contained therein including, for example, animal repellents, insecticides, or odorants. In a preferred embodiment, the chips are made from thermoplastic material, embossed and colored to simulate bark chips from a tree.
Patent CA-2070283-C (CA)
Title: Cross-lamination injection molding
Inventor: SORENSEN JENS OLE
IPC: B29L9/00
Filed: 1990-12-07
Granted: 1997-01-21
Abstract: A plastic product (16) having a cross-laminated section (17) including a first plastic layer (13) and a second plastic layer (15) is injection molded in a mold system that includes a first mold cavity with a first-layer-defining mold-cavity-section and a second mold cavity with a second-layer-defining-mold-cavity-section tht has a second-cavity-section-wall. The product is molded by injecting a quantity of first plastic into the first mold cavity so that the first plastic flows in the first layer-defining-mold-cavity-section in a first predetermined general direction (12); solidifying at least partly the flowed first plastic in the first-layer-defining-mold-cavity-section to thereby form said first plastic layer; adjusting the mold system to provide the second mold cavity, with the second-cavity-section-wall including the first plastic layer; injecting a quantity of second plastic into the second mold cavity so that the second plastic flows in the second-layer-defining-mold-cavity-section in a different second predetermined general direc-tion (14), whereupon the second plastic in the second-layer-defining-mold-cavity-section fuses with the first plastic layer.
Patent CA-2071833-C (CA)
Title: Red blood cell storage solution
Inventor: PAYRAT JEAN-MARC
IPC: A01N1/02
Filed: 1991-10-30
Granted: 1998-11-03
Abstract: The present invention provides an improved aqueous solution for suspending and storing red blood cells. The solution includes sodium citrate, a combination of sodium biphosphate and sodium phosphate dibasic, adenine, and mannitol. The solution is formulated at a low osmolarity and has a physiological pH of approximately 7.4. The solution simultaneously maintains stored red cells ATP and 2,3-BPG.
Patent CA-2073053-C (CA)
Inventor: AMES WILLIAM G
IPC: G01S5/12
Filed: 1990-11-30
Granted: 2000-01-18
Abstract: A method and system for determining the position of an object (12) using a fixed station (10) and a plurality of earth orbit satellites (S1, S2) whose positions are known. Separate periodic signals (20, 22) are transmitted from the fixed station (10) via first and second satellites (S1, S2) to the object (12) whose position is to be determined.       The phase offset in periodic characteristics of the periodic signals as received from the first and second satellites is measured at the object. The phase offset corresponds to a relative time difference in propagation of the signals traveling two different paths to the object. The object (12) transmits via the first satellite (S1) a return signal (24) indicative of the measured relative time difference. This return signal is activated some time in the future according to the object local time, which is slaved to receipt of the periodic signal sent through the first satellite. This future time is the start of the particular time period as decided by the fixed station's schedule. At the fixed station (10), an instantaneous round trip delay, determined by the time offset of the current transmission clock time relative to the receive clock time of reception of the return signal (24), along with the measured relative time difference sent back on the return signal (24), is used to calculate the distances between the first and second satellites (S1, S2) to the object (12).  From these distances the position of the object (12) is calculated.
Patent CA-2076932-C (CA)
Title: Multiplex transmission apparatus
Inventor: HASHIMOTO KYOSUKE
IPC: B60R16/02
Filed: 1992-08-26
Granted: 1996-12-17
Abstract: A multiplex transmission apparatus in accordance with the present invention is interconnected with other multiplex transmission apparatuses via common transmission lines, and it is used for a multiplex transmission system which performs data transmission.  The multiplex transmission apparatus comprises voltage converting circuits which detect voltages of the transmission lines, the first comparator which compares the detected voltages, the second comparator which compares one voltage of the detected voltages with a reference voltage, and the third comparator which compares the other detected voltage with a reference voltage.  The comparators supply the comparison results to differential circuits, respectively, set the output of the differential circuit linked to a comparator, which is connected to a faulty line, for "L", and determine the logical sum of the outputs of the differential circuits by a logical synthesizing circuit.  By applying the determined logical sum to a multiplex transmission control circuit, the apparatus makes it possible to reduce wasteful message transmission and successfully cope with faults in the transmission lines without causing delay in transmission of messages which require quick responses and without increasing the traffic volume of the transmission lines.  The multiplex transmission control circuit detects signals on the transmission lines according to the comparison results of the comparators.
Patent CA-2080050-C (CA)
Title: Power supply controller and frequency synthesizer using the same
Inventor: NORIMATSU HIDEHIKO
IPC: H03L3/00
Filed: 1992-10-07
Granted: 1997-01-21
Abstract: A power supply control circuit is responsive to a control signal for intermittently supplying voltage from a built-in battery to a frequency synthesizer so as to prevent charge depletion of the built-in battery.   In order that a charge on a capacitor of an active LPF, inserted between the built-in battery and the frequency synthesizer to constitute the power  supply control circuit,  is not released toward the synthesizer side during suspension of voltage supply to the synthesizer, a switching means responsive to the control signal is added.  This power supply control circuit advances the rise of the supply voltage, and accordingly the stabilization of the output frequency of the synthesizer,  on resumption of the voltage supply.
Patent CA-2081661-C (CA)
Title: Process for coating electrically conductive substrates and aqueous cathodically precipitable electro dipcoat enamel
Inventor: RUEHL DIETER
IPC: C09D5/00
Filed: 1991-04-25
Granted: 1996-03-26
Abstract: The invention relates to aqueous electrocoating paints which contain 2 to 10% by weight of an anti-corrosive pigment based on zinc silicate in combination with 1 to 15% by weight of a very fine quartz powder or cristobalite powder coated with epoxysilane or amino-silane, the percentages by weight being based on the total solids content of the electrocoating paint and the anti-corrosive pigment being preparable by fusing together 35 to 65% by weight of ZnO, 15 to 35% by weight of SiO2 and 0 to 20% by weight of B2O3 and/or 0 to 20% by weight of WO3 and/or 0 to 20% by weight of MoO3 and/or 0 to 20% by weight of SnO2, the components being fused together using at least one of the cited oxides besides ZnO and SiO2 in such a manner that the percentages by weight always total 100.
Patent CA-2082238-C (CA)
Title: Process and apparatus for the continuous production of helical or annular corrugated metal tubes
Inventor: HOFFMANN ERNST
IPC: B21D15/06
Filed: 1992-11-05
Granted: 1995-08-15
Abstract: In a process for the continuous production of helical or annular corrugated, thin-walled, in particular longitudinally welded metal tubes, in which a freely rotating roller ring in a turntable corrugation head, which is eccentric with respect to the smooth metal tube, rolls against the smooth surface of the metal tube to produce the corrugation, and the metal tube is transported by a traction device that grips the smooth and/or corrugated metal tube, the force acting on the roller ring is constantly measured, and the rotation speed of the head is controlled as a function of the measured force.
Patent CA-2082636-C (CA)
Inventor: RADISSON XAVIER
IPC: A61P31/04
Filed: 1991-07-15
Granted: 2002-05-21
Abstract: PCT No. PCT/FR91/00579 Sec. 371 Date Jan. 4, 1993 Sec. 102(e) Date Jan. 4, 1993 PCT Filed Jul. 15, 1991 PCT Pub. No. WO92/01692 PCT Pub. Date Feb. 6, 1992.Method for preparing (dialkylamino-2 alkyl)sulphonyl-26 pristinamycin IIB having general formula (I)    <IMAGE>  (I)  by oxidation of (dialkylamino-2 alkyl)thio-26 pristinamycin IIB with 3,5 to 20 of hydrogenperoxide equivalent, in the presence of alcaline metal tungstate, in a 2-phase medium, at a temperature between 10 DEG  and 25 DEG  C.
Patent CA-2083861-C (CA)
Inventor: SO GIN PANG
IPC: H05B41/285
Filed: 1992-11-26
Granted: 1998-07-07
Abstract: A circuit  is  disclosed to  implement  an  energy  saving electronic ballast (1A) for driving a fluorescent lamp or tube (2).  The circuit is characterized by a high power factor, low harmonic distortion and minimized radio frequency interference.          The circuit includes a unique DC power supply (4) comprising a high pass filter (8), which receives an AC input signal, a diode bridge rectifier (6) and a high speed diode rectifier (D2) which cooperates with the bridge rectifier to provide the power supply with first and second rectification stages. A current regulating capacitor  (C4)  for driving the fluorescent lamp or tube is connected to the DC power supply between the first and second rectification stages.  A trigger and high frequency oscillator are provided after the second rectification stage of the power supply to provide the DC current necessary to operate the ballast circuit.  A protection circuit (30) is connected to the ballast and operable to disable the oscillator and thereby prevent damage to the ballast in the event that the tube or lamp is defective or disconnected  from the ballast  or  subjected  to  abnormal operating conditions.
Patent CA-2091166-C (CA)
Title: Method of recording picture information, record carrier, and picture retrieval and reproduction device for reading the record carrier
Inventor: TIMMERMANS JOSEF MARIA KAREL
IPC: H04N7/00
Filed: 1991-09-13
Granted: 2000-10-10
Abstract: A method is disclosed for recording picture information, in which pictures (2) on an image carrier (3) are scanned and converted into a picture information signal, the picture information signal being converted into a coded picture, which is recorded on a record carrier (184). For a plurality of scanned pictures the information signal is converted into n independently coded pictures (TV/ 16, TV/4, TV) for each picture scanned, n being greater than or equal to two. The resolutions of the picture representations defined by these n coded pictures are different. For each of said plurality of scanned pictures (2) the associated coded pictures (TV/16, TV/4 TV) are recorded on the record carrier (184). Moreover, a picture retrieval and reproduction device (11) for reading the record carrier (184) thus obtained is disclosed.