baber/WOPTO huggingface dataset:
Patent CA-2040067-C (CA)
Title: Method and apparatus for analyzing the operating condition of a machine
Inventor: SCHUH DAVID N
IPC: F04B51/00
Filed: 1991-04-08
Granted: 1998-08-25
Abstract: A method and apparatus for analyzing the operating condition of a machine, such as a reciprocating compressor (10), is provided.  The method comprises testing for fluid flow across the closed suction and discharge valves (30 - 33), as well as leakage across the piston (16), when the machine is in a non-operating condition.  The test apparatus may be removable attached externally to the machine by connection to the Kiene head end indicator cock (22) and the crank end indicator cock (24) or the apparatus may be built in internally of the machine.
Patent CA-2042744-C (CA)
Title: Syndiotactic propylene copolymer, method for preparing same, and its use
Inventor: ASANUMA TADASHI
IPC: C08F255/02
Filed: 1991-05-16
Granted: 1995-08-01
Abstract: A syndiotactic graft copolymer is here disclosed in which a radical polymerizable unsaturated compound is grafted on a propylene homopolymer or copolymer, and this graft copolymer is obtained by heating a homopolymer having a substantially syndiotactic structure of pro-pylene or a copolymer having a substantlally syndiotactic structure of propylene and another .alpha.-olefin and a radical polymerizable unsaturated compound such as an unsaturated carboxylic acid or an unsaturated silane in the presence of a radical initiator up to the decomposition tempera-ture or more of the radical initiator.  This kind of graft copolymer can be used as a composition for adhe-sion.  The graft copolymer in which the radical poly-merizable unsaturated compound is a hydrolyzable unsatu-rated silane can be converted into a crosslinked polymer by heating in the presence of water, and it can also be converted into a water-crosslinkable resin composition by adding various additive thereto.
Patent CA-2043062-C (CA)
Inventor: HUMMEL JOSEPH
IPC: D02G3/18
Filed: 1991-05-22
Granted: 2001-12-11
Abstract: Yarn and a knitted safety glove or other article made of the yarn, which has a care of at least one strand of high strength liquid crystal polymer fiber such as Vectran HS fiber surrounded by one or two wrappings of high strength synthetic fiber, preferably high strength liquid crystal polymer fiber such as Vectran HS fiber or high strength aramid fiber, or high strength stretched polyethylene fiber, or a combination of high strength fibers. One embodiment of the yarn includes a wire strand in the core. In one embodiment the fiber care strand is of 200 to 1500 denier and has one to fifty filaments of 4 to 500 denier. In another embodiment, a second high strength synthetic core strand is included.
Patent CA-2044438-C (CA)
Title: Mobile communications
Inventor: MAUGER RAY HAROLD
IPC: H04W4/029
Filed: 1991-06-12
Granted: 2002-05-14
Abstract: A mobile communications network comprises a PCN network (60-64) including a plurality of radio cells under the jurisdiction of an MSC (mobile-services switching centre). One or more of said cells comprise a fixed base (60, 61) for a mobile subscriber (71). Location information regarding the fixed bases being stored in a fixed location register (FLR). When the mobile subscriber roams into such a fixed base location (60, 61) a respective service type is provided. In particular, the fixed base may be a business site (60) with a PABX network. When the mobile subscriber roams into the business site, calls involving him are routed via the PCN network or rather the base station controller (BSC) thereof, which is intelligent in that it has MSC functionality located thereat. Thus a mobile phone can act as a desk phone, with all the same services provided, whilst the mobile subscriber is within the business fixed base.
Patent CA-2045000-C (CA)
Inventor: SPADAFORA ROBERT J
IPC: G10D3/16
Filed: 1991-06-19
Granted: 1994-02-01
Abstract: ABSTRACT            The invention provides an improved clip for use with a violin bow guide.   The bow guide is of the type having a rod guide which is supported on a stand above the violin strings, and a rod which slides through a bore in the rod guide, the ends of the rod being attached to the violin bow.  A pair of the improved clips is used for attaching the rod to the violin.   The clip has a body with a bore for receiving an end of the rod, means to stop the rod from passing through the bore in the body and gripping means to hold the back of the bow.  The bore is configured to permit the rod to move up and down therein, and means are provided to selectively restrict such movement.
Patent CA-2050497-C (CA)
Title: Process of desulfurizing a gas mixture which contains h2s and s2 with recovery of said composites in the form of sulfur
Inventor: VOIRIN ROBERT
IPC: B01D53/48
Filed: 1991-02-11
Granted: 1999-12-07
Abstract: A method for desulphurising a gaseous mixture which contains a low overall concentration of H2?S and SO2? in a mol ratio of H2?S:SO2? of about 2:1, and recovering said compounds in the form of sulphur, wherein said gaseous mixture is contracted with a catalyst which is a promoter of the sulphur-forming CLAUS reaction between H2?S and SO2? and comprises at least one end portion consisting of a composite catalytic mass obtained by combining alumina with at least one compound of a metal selected from titanium, yttrium, lanthanum and rare earth metals having an atomic number between 58 and 71. The gaseous mixture to be desulphurised is brought into contact with the catalyst at a temperature which is lower than the dew point of the sulphur thereby produced, preferably at between 120 C and 170 C, so that the sulphur is deposited on the catalyst.
Patent CA-2054037-C (CA)
Inventor: MAURER UELI
IPC: H04L9/08
Filed: 1991-10-23
Granted: 2001-06-12
Abstract: A secret key generator for a trusted authority means in a cryptographic system comprising means for receiving a publicly-known user identity IDA for a user A; and further comprising secret key generator means for transforming the publicly-known user identity ID A into secret key s A for the user A with the inverse of the exponentiation function a s A ~ (ID A)2 (mod m), that is solved for s A, where a is a publicly-known base parameter, where m is a publicly-known modulus parameter and m = p1 * P2 ~~~ * Pr, and where p1, P2, ..., pr are secret system prime numbers. The inverse of the exponentiation function is infeasible to compute in order to calculate the secret key s A without knowing the prime numbers p1, p2, ..., Pr. The secret key s A enables user A to communicate securely to a user B having publicly-known user identity ID B with a mutual secure cipher key K AB, defined by the equation:                   K AB ~ (ID B) 2s A (mod m).         The mutual secure cipher key K AB is determined without previous interaction with the user B.
Patent CA-2056156-C (CA)
Title: Central vacuum system wall valve spacing plate
Inventor: MCKNIGHT DARWIN T
IPC: A47L5/38
Filed: 1991-11-25
Granted: 1999-10-05
Abstract: A central vacuum system wall valve spacing plate is described which includes bosses of varying sizes so as to be adaptable to a variety of spacing requirements for the components of the wall valve.
Patent CA-2056728-C (CA)
Title: Tractor draft force sensor
Inventor: SPENCER KEITH LOUIS
IPC: B60D1/58
Filed: 1991-11-29
Granted: 1995-09-26
Abstract: An articulated tractor has left and right laterally spaced apart, for-and-aft extending side frame members which are rigidly attached between front and rear drawbar supports. The tractor also includes left and right draft links, each draft link having a front end coupled to a corresponding one of the side frame members and a rear end for coupling to an implement.  A draft force sensing mechanism includes a displacement transducer mounted on one of the side frame members.  A lever is pivotally mounted near the transducer and carries a plunger or shaft which operatively engages the transducer.  A rod has a first end fixed to the other side frame member and a second end coupled to the lever so that changes in draft force cause deflection of the side frame members and movement of the lever relative to the transducer. The transducer responds by generating a signal representing the draft force.  Movement of the rod is amplified by the lever.
Patent CA-2059478-C (CA)
Title: Beta alumina sintered body and method of manufacturing the same
Inventor: ICHIKAWA SHUICHI
IPC: C01F7/028
Filed: 1992-01-16
Granted: 1996-08-06
Abstract: A beta alumina sintered body having a wide optimum sintering temperature range and a high sodium ion conductivity essentially includes  8.0-10.0 wt% of sodium oxide, 3.0-5.5 wt% of magnesium  oxide, 0.01-1.0 wt% of tin oxide, and the remainder of aluminum oxide.  This sintered body is manufactured by mixing raw material consisting essentially of 8.0-10.0 wt% of sodium oxide, 3.0-5.5 wt% of magnesium oxide, 0.01-1.0 wt% of tin oxide, and the remainder of aluminum oxide to obtain raw material powder; forming the raw material powder to obtain a formed body; and sintering the formed body to obtain a beta alumina sintered body.
Patent CA-2062323-C (CA)
Title: Sampling bag with enclosed wire ends
Inventor: NIEMEYER WILLIAM PHILLIP
IPC: B65D33/30
Filed: 1992-03-05
Granted: 1999-07-13
Abstract: A sampling bag such as for sampling of liquids or other material is provided with an improved wire-type closure.  A pair of wires are connected to the front and rear walls of the bag, and extend outwardly beyond the side edges of the bag.  Facing adhesive strips are secured to the front and rear walls of the bag along the length of the wires, and the ends of the adhesive strips extend beyond the ends of the wires.  The adhesive strips are secured to each other beyond the wire ends, to enclose the wire ends. In this manner, contact of the wire ends with the walls of the bag is prevented when the wire ends are bent inwardly to close the bag.
Patent CA-2063390-C (CA)
Title: Feeding system for a lime reburning kiln
Inventor: AHVENAINEN ARTO
IPC: F27B7/32
Filed: 1990-06-28
Granted: 1995-08-08
Abstract: A method and apparatus for heat treatment of lime mud com-prises drying of the lime mud to be introduced into the lime reburn-ing kiln (5) in a pneumatic dryer (3) by means of flue gases dis-charged from the lime reburning kiln in order to regenerate the lime content of the lime mud. From a drying filter (6), the lime mud thickened to a dry solids content of over 75 %, preferably to 80 %, is introduced into a feed chamber (2) through which an adjustable por-tion of the flue gas is conducted. Depending on the gas amount, 100 % or less of the lime mud is entrained with the gas into the dryer (3), the remaining portion falling into the lower section (14) of the feed chamber, wherefrom it is further transferred into the lime reburning kiln (5).
Patent CA-2063591-C (CA)
Inventor: PIKULIN MICHAEL A
IPC: D21C9/14
Filed: 1990-05-17
Granted: 1998-02-03
Abstract: A process for delignifying and bleaching a lignocellulosic pulp without the use of elemental chlorine by partially delignifying the pulp to a K No. of about 10 or less and a viscosity of greater than about 13 cps; and further delignifying the partially delignified pulp with an effective amount of ozone for a sufficient time to obtain a substantially delignified pulp having a K No. of about 5 or less, a viscosity of greater than about 10, and a GE rightness of at least about 50 %. The substantially delignified pulp may be brightened by the addition of a bleaching agent such as chlorine dioxide or a peroxide to obtain a final product having a GE brightness of at least about 65 %, preferably abovt 70 % to as high as 90 %. Because of the absence of a elemental chlorine in this sequence, filtrate from all stages but the chlorine dioxide stage (if used) can be recovered without sewering. Major environmental improvements are thus achieved.
Patent CA-2064839-C (CA)
Inventor: LEACH ROGER JOHN
IPC: C08L67/06
Filed: 1990-08-14
Granted: 2001-02-13
Abstract: In manufacture of a glass architectural panel (Fig 1) and aluminium foil (4) is bonded to a glass sheet (1) via a layer (2) of thermosetting polyester powder coating material, The powder is deposited (12) on the foil as the foil unrolls (11) and is melted (13) to provide a fused layer (2) which is then cooled (14) to solidify the layer and arrest progress of curing.      The solidified layer is sprayed (15) with a silane adhesion promoter, before being heated momentarily to enable the foil with its adhering and solidified, by uncured, layer, to be rolled up for storage (16).      The rolled foil is transferred nearer (17) to a float-glass production line (18), where, after being heated to allow it to be unrolled, it is fed onto a hot glass sheet (1) emerging from the line (18). The fused layer melts as it is brought down with the backing foil to contact the glass sheet (1) and fulfil the cure of the powder material so as to establish the bond. Instead of a single foil, several may be provided overlapping one another (Fig 3). Decorative effects can be obtained using different pigmentations of powder and partial metalization of the glass (Fig 4). The technique of interrupting the cure is applicable to provision of a glass window (Fig 5) and a glass laminate (Fig 6).
Patent CA-2067937-C (CA)
Title: Movable chair
Inventor: OCHIAI SHIGEYOSHI
IPC: A61G5/10
Filed: 1992-05-04
Granted: 1994-07-26
Abstract: A movable chair includes a chair main body and a pair of left and right traveling devices.  The chair main body has a seat portion.  The traveling devices are disposed on left and right sides of the chair main body and are designed to move the chair main body while supporting the chair main body.  The traveling devices includes traveling frames disposed along a traveling direction, endless rail portions respectively disposed around the traveling frames, endless tracks respectively wound around the endless rail portions, a driving section for driving the endless tacks, and a control section for allowing a sitting person to control the driving section.  The endless tracks includes endless driving belts, and a plurality of ground-contact feet mounted on the endless driving belts and having different shapes.
Patent CA-2069921-C (CA)
Title: Hand-held ultrasonic probe
Inventor: STASUK DAVID G
IPC: G01N29/265
Filed: 1991-10-04
Granted: 1994-10-04
Abstract: A hand-held ultrasonic probe (18) for measuring the thickness of a conduit (10), such as a boiler tube, from the tube inside surfae. The probe (18) is slidable and rotatable relative to the longitudinal axis of the conduit (10) under investigation. The probe (18) may also be manually skewed relative to the conduit longitudinal axis to measure corroded regions which are not parallel to the centerline of the conduit (10).
Patent CA-2070629-C (CA)
Inventor: COLVILL ROBERT HARRY
IPC: G06T11/60
Filed: 1991-01-31
Granted: 2000-01-11
Abstract: L'appareil décrit, qui sert à gérer des représentations numériques de documents destinées à comporter un certain nombre d'images, comprend une première mémoire (3) de stockage des données numériques définissant le contenu image de chaque pixel de chaque image; ainsi qu'un générateur de données de couleurs (4) produisant des données définissant, indépendamment des données du contenu image, la couleur de chaque pixel de chaque image ou d'une combinaison d'images, comme définie par l'utilisateur. Un processeur (1) combine sélectivement les données de contenu image et les données de couleur pour permettre la visualisation des images sélectionnées séparément ou en combinaison, comme autorisé par la structure d'organisation en couches fournie.
Patent CA-2070826-C (CA)
Title: Fermentation process for the production of pyrimidine deoxyribonucleosides
Inventor: MCCANDLISS RUSSELL J
IPC: C12N9/10
Filed: 1990-12-05
Granted: 2001-10-30
Abstract: DNA coding for at least one enzyme that causes the accumulation of a pyrimidine deoxyribonucleoside is used, in con-junction with metabolic mutations or heterologous DNA coding for metabolic enzymes that also increase pyrimidine deoxyribon-ucleoside production, to engineer cultured cells to express a pyrimidine deoxyribonucleoside (PdN) in recoverable quantities, pro-viding a commercially useful fermentation source for PdNs.
Patent CA-2072239-C (CA)
Title: Error based zone controller
Inventor: SHAH DIPAK J
IPC: G05D23/19
Filed: 1992-06-24
Granted: 1999-12-14
Abstract: The present invention describes an apparatus and method for balancing and controlling the temperature and a plurality of comfort zones within a house or commercial building. The invention contemplates a series of zone control devices which are selectively opened or closed to allow heating and/or cooling to individual zones. The temperature in each zone is sensed and compared to a preferred setpoint temperature to determine an error temperature for each zone. The respective error signals for each zone are used to determine the zone of greatest thermal error. The zone of greatest thermal error is used to turn the heating/cooling plant on and off. The remaining zones or zones of lesser thermal error have their zone control devices closed or opened, depending upon the error signal for their respective zones.  In this manner, all zones are synchronized to the cycle of the zone of greatest thermal error.
Patent CA-2072373-C (CA)
Title: Reseau de communication a saut de frequence a porteuse commune
Inventor: KOTZIN MICHAEL D
IPC: H04J13/00
Filed: 1991-02-20
Granted: 1998-10-06
Abstract: L'invention est un mécanisme de communication à sauts de fréquence utilisant une porteuse commune pour réseaux cellulaires AMRT. Ce mécanisme affecte au moins une porteuse parmi une multiplicité de porteuses à sauts de trame MRT, cette affectation étant basée sur les trames dans le diamètre de réaffectation d'une zone de couverture (A-I) durant certains créneaux temporels, et, d'après les trames présentes sur cette porteuse, à affecter ce diamètre de réaffectation à une autre zone de couverture (A-I) durant certains autres créneaux temporels essentiellement non en chevauchement avec cette porteuse à sauts de trame, le tout essentiellement en synchronisme sans parasitage avec toute réaffectation de cette porteuse dans le voisinage, ce qui procure les avantages des sauts de fréquence. En d'autres termes, ce mécanisme affecte à un instant donné dans le diamètre de réaffectation d'une zone de couverture (A-I) au moins une porteuse parmi une multiplicité de porteuses à sauts de trame et, au même moment, affecte, dans le diamètre de réaffectation de porteuse d'une autre zone de couverture (A-I), une autre porteuse parmi cette pluralité, le tout en synchronisme avec toute réaffectation de cette porteuse dans le voisinage. Les porteuses de commande et d'accès peuvent être incluses dans cette pluralité, de sorte que certains créneaux temporels peuvent faire l'objet de sauts dans des suites différentes. La multiplicité des porteuses à sauts de trame est de plus partagée en groupes de saut entre les sites cositués, ce qui réduit les besoins de synchronisation intrasystème. Pour résoudre le problème associé à la distance, les créneaux temporels aux limites des frontières de saut sont affectés aux utilisateurs mobiles les moins éloignés dans la concrétisation privilégiée de l'invention.
Patent CA-2077818-C (CA)
Title: Method and apparatus for aligning multiple image print bars in a single pass system
Inventor: CORONA STEPHEN C
IPC: H04N1/29
Filed: 1992-09-09
Granted: 2000-11-28
Abstract: An image bar recording system, which, in a preferred embodiment, utilizes a plurality of LED image bars to provide a plurality of latent images which may subsequently be developed in different colors.     The print bars are initially aligned so that each color image is precisely registered at the same relative position along the exposed area of a photoreceptor belt. The alignment is accomplished by adding non-image fiduciary pixels to the ends of each print bar and by forming a pair of opposed alignment apertures in the surface of the belt. Y-axis alignment of the print bars is accomplished by detecting edge locations of a first pixel and using this location to select a centrally located fiduciary pixel. The X-axis alignment is then obtained by rotating the print bar to bring a second selected image pixel into alignment as sensed through a second aperture.      Once the initial X and Y-axis alignments are complete, subsequent alignment is maintained through subsequent passes by checking the positions of the previously identified pixels as they advance past additional lead edge apertures formed in the process direction along the belt surface.
Patent CA-2079189-C (CA)
Inventor: PEGLION JEAN-LOUIS
IPC: C07D491/056
Filed: 1992-09-25
Granted: 2001-10-23
Abstract: Compounds of formula (I): 
<IMAGE>
 in which p and q, which are identical or different, represent 0, 1 or 2 provided that the sum p + q is equal to 1 or 2. 
<??>These compounds are useful in the treatment of cardiovascular ailments.
Patent CA-2081491-C (CA)
Title: Housing for cable mounted power line monitoring device
Inventor: SCHWEITZER EDMUND O JR
IPC: G01R1/04
Filed: 1992-10-27
Granted: 1999-12-07
Abstract: A housing and clamp assembly for mounting a circuit condition monitoring device on a monitored electrical cable includes a body member for housing device circuitry, a first relatively non-resilient clamp arm, and a second relatively resilient clamp arm. The clamp arms are biased closed around the conductor without pre-configuration of the clamp arms by parallel-spaced helical springs, which also serve to hold the cable against an indexing surface on the first clamp arm to minimize the effect of cable diameter on the spacing between the cable and the condition monitoring device and hence the calibration of the monitoring device.
Patent CA-2082431-C (CA)
Title: Method and apparatus for timing recovery in digital data communications systems
Inventor: CAPKUN EDWARD ANTHONY
IPC: H04L7/033
Filed: 1991-05-23
Granted: 2001-04-10
Abstract: In apparatus for receiving digital data signals in a digital communication system; especially an Integrated Services Digital Network, timing recovery problems associated with erratic zero crossing when multiple terminals transmit to a common receiver are mitigated by detecting the rate of change of the digital data signal between tyro predetermined positions (C1, C2) and controlling sampling of the digital data signal in dependence upon the difference between such rate of change and a reference. The rate of change conveniently corresponds to the trailing "corner" of a framing pulse (F), i.e, the point at which the signal commences the transition from one polarity to the other. The "corner" is much more stable; i.e. less susceptible to variation due to multiple terminal effects, than the zero-crossing which follows it, since the zero crossing may vary relative to the "corner". The transition may be determined by sampling the digital data signal at two discrete positions and determining when the two resulting samples differ in amplitude by a predetermined amount. One of the two pulses (C1, C2), namely the one with the targer amplitude (1), may then be used for data recovery.
Patent CA-2083579-C (CA)
Inventor: VASLIN JEAN-PHILIPPE
IPC: B64C25/30
Filed: 1992-11-23
Granted: 1997-03-18
Abstract: L'invention concerne un système d'actionnement du vérin de manoeuvre d'un train d'atterrissage d'avion, comportant une génération hydraulique capable d'envoyer du fluide sous pression vers l'une ou l'autre des deux chambres du vérin de manoeuvre. Conformément à l'invention, le système d'actionnement comporte un dispositif de sécurité permettant d'eviter toute surcharge sur la tige du verin sous l effet de pointes de pression : ce dispositif comporte deux clapets de surpression , le premier clapet limitant la pression délivrée dans la chambre annulaire étant en outre pilote par la pression de la chambre de pleine section , et le second clapet de surpression , du type différentiel, contrôlant en permanence l'écart de pression entre les deux chambres du vérin. Application à la réalisation de systèmes d'actionnement à haute sécurité pour atterrisseurs d'avion. Figure unique.