baber/WOPTO huggingface dataset:
Patent CA-2020989-C (CA)
Title: Snowplow deflection system protecting snowplow vehicles and windshields
Inventor: PEASE WALTER G
IPC: E01H5/04
Filed: 1990-07-12
Granted: 1997-07-15
Abstract: A  snow  deflection  system  for  use  with  vehicle propelled snowplows  is designed to deflect snow which passes over the plow or moldboard away from the propelling vehicle.  The top margin of the moldboard has permanently attached to it belt means which extends  forwardly and downwardly  to  control  and  maintain  the  position  of generally all of the snow in general close proximity with the moldboard.  By mounting arcuate foil means in spaced apart relationship above the top margin of the moldboard and  the  belt  means,  an  airflow space  is  defined therebetween,  thereby effectively directing the flow of snow above the moldboard through the airflow space and directing it downwardly away from the snowplow vehicle.
Patent CA-2021715-C (CA)
Title: Metal roof reroofing system and method
Inventor: KARRFALT HENRY A
IPC: E04G23/02
Filed: 1990-07-20
Granted: 2000-01-18
Abstract: A reroofing system and method for weatherproofing the metal parcels which are attached to an existing roof desk by series of fasteners. A tape laminate formed of butyl rubber and unvulcanized EPDM is applied over the series of fasteners and over the seams formed by adjacent and overlapping panels to provide a weatherproof seal therefor.      The butyl rubber has sufficient natural tackiness to secure the EPDM to its top surface and to secure the bottom surface of the tape to the metal panels. The tape laminate has an elongation of approximately 600% and thus is unaffected by panel and building movements. A casting of an acrylic paint may be applied aver the tape laminate and remaining surfaces of the roof panels to increase the weatherproofing effectiveness thereof and to provide an aesthetically pleasing appearance.
Patent CA-2024491-C (CA)
Title: Heat exchanger
Inventor: KWOK TAI W
IPC: F28F19/01
Filed: 1990-08-31
Granted: 1994-03-15
Abstract: Abstract A shell-and-tube heat exchanger with a tube sheet having false partition grooves which allows the periodic rotation of a removable heat exchanger tube bundle, as well as a method of performing such rotation.
Patent CA-2031083-C (CA)
Title: Molded case circuit breaker exhaust barrier
Inventor: KELAITA JOSEPH BENJAMIN JR
IPC: H01H9/02
Filed: 1990-11-29
Granted: 2002-01-01
Abstract: An exhaust gas barrier is arranged within the line terminal compartments of molded case circuit breakers of dissimilar design that are double-branch-connected within electric power distribution panelboards to pre-vent the occurrence of inter-phasal faults. The exhaust gas barrier incorporates three line terminal plugs that are interconnected by means of a three-way flexible rib. Box-like projections integrally-formed within the exhaust gas barrier extend into the line lug compartments of an opposing circuit breaker sharing the same branch strap connections. The box-like projec-tions are removable to facilitate double-branch connec-tion between two circuit breakers of similar design.
Patent CA-2042749-C (CA)
Title: Automatic return mechanism for hydrostatic transmission pressure release valve
Inventor: HUNT KENNETH E
IPC: F16H63/40
Filed: 1991-05-16
Granted: 1993-09-14
Abstract: AUTOMATIC RETURN MECHANISM FOR HYDROSTATIC TRANSMISSION PRESSURE RELEASE VALVE: A hydrostatic transmission pressure release valve control mechanism is provided to enable an operator to quickly release the transmission pressure and manually move the vehicle when the engine is not operating. The pressure release mechanism, which permits vehicle movement for repairs, maintenance and similar activities, is automatically deactivated to restore transmission pressure as the vehicle brake is depressed in preparation for restarting the engine.
Patent CA-2043733-C (CA)
Title: Aromatic compounds
Inventor: ISENRING HANS PETER
IPC: A01N37/06
Filed: 1991-06-03
Granted: 2003-08-19
Abstract: The invention relates to novel compounds of the formula   in which R1 is C1-4alkyl and (Y-X) is CH2, C1-2alkylthio-CH= or C1-2alkyl-ON=  and Z is an aldimino or ketimino group, and to their preparation, as well as fungicidal compositions with such compounds as active substances. The compounds can be employed for controlling fungi in agriculture, in horticulture and in wood preservation.
Patent CA-2045239-C (CA)
Title: Reliable superconducting link for superconducting thin film components and a method for fabricating the contacts
Inventor: AHONEN ANTTI ILMARI
IPC: H01R43/00
Filed: 1991-06-21
Granted: 2002-04-09
Abstract: A reliable superconducting contact for superconducting thin film components, based on soft superconducting materials, and a method for making the contacts. The joint, according to this invention, consists of a thin bonding slab having its end longitudi-nally cut so that double or multiple parallel joints can be made. In the method, a wire blank is squeezed to a thin plate and then this plate is cut to slabs used in the bonding. The ribbon-like character and the thinness of the bonding slab permit a precise control of the bonding temperature and reduce the strain and bending forces caused by thermal contraction, preventing the contact from peeling off while cool-ing the superconducting component to the operational temperature.  Corresponding prior-art methods have proven unreliable especially on such applications where the simultaneous faultless operation of several tens of contacts is essential.
Patent CA-2059622-C (CA)
Title: Pipe coupling
Inventor: BLOSE THOMAS LAYTON
IPC: F16L15/00
Filed: 1992-01-17
Granted: 1996-06-25
Abstract: A pipe coupling or connection comprises  a  female coupling component and a mating male coupling component.  Each component is matingly threaded for coupling engagement, and each is provided with an adjacent frusto-conical sealing surface.  The sealing surface is provided with a controlled surface roughness, viz. very shallow fine surface variations, preferably formed as microgrooves at a pitch small relative to the pitch of the threads.  The slope of the frusto-conical surface of the sealing area of the male component is slightly mismatched with that of the sealing area of the female component to simulate the bearing force vs. axial distance characteristic of shrunk-fit circular cylindrical sealing surfaces.  The slight mismatch enables the sealing pressure to be above a design minimum throughout the entire sealing area yet higher at each end of the sealing area.          As the coupling is assembled, thread interference in the vicinity of the sealing surface lags the occurrence of  interference between the sealing surfaces.  Load threads are provided with negatively inclined load flank faces.
Patent CA-2063860-C (CA)
Title: Purification of sulfur hexafluoride
Inventor: HARDWICK STEVEN J
IPC: C08F8/34
Filed: 1992-03-24
Granted: 1996-12-03
Abstract: Impurities such as oxygen and moisture can be removed from sulfur hexafluoride by contacting the impure gas with the reaction product of sulfur hexafluoride and a lithium-substituted macroreticulate polymer.
Patent CA-2068064-C (CA)
Title: Fibrinogen receptor antagonists
Inventor: DUGGAN MARK E
IPC: C07D211/76
Filed: 1992-05-06
Granted: 2001-01-02
Abstract: Fibrinogen receptor antagonists of the formula   are disclosed for use in inhibiting the binding of fibrinogen to blood platelets and fox inhibiting the aggregation of blood platelets.
Patent CA-2069600-C (CA)
Title: Fatty acid compositions
Inventor: HORROBIN DAVID F
IPC: A61K8/96
Filed: 1992-05-26
Granted: 2004-05-04
Abstract: A natural or synthetic glycerol oil which comprises at least 20% by weight, preferably at least 25% of di-linoleoyl-mono-gamma-linolenyl-glycerol (DLMG), is used to supplement foods, nutritional compositions and in skin and hair care compositions.
Patent CA-2071002-C (CA)
Title: Perforatrices hybrides pneumatiques/a percussion
Inventor: FU CHUEN-CHENG
IPC: E21B4/14
Filed: 1990-12-26
Granted: 1997-10-14
Abstract: Perforatrice à percussion hydraulique dans la roche comprenant un manchon d'usure (12) et un piston placé dans le manchon d'usure où il peut coulisser. Des surfaces de pression d'avancement (58) et de retour (32) polarisent le piston entre des positions d'avancement et de retour respectivement. Un orifice de haute pression (18) est inclus. Une chambre de retour (22) est exposée à la surface de pression de retour (32). Une chambre d'avancement (36) est exposée à la surface de pression d'avancement (58). Une soupape sensible à la pression (42) peut se déplacer entre une position ouverte et une position fermée. Quand la soupape (42) est en position ouverte, l'orifice de haute pression (18) est raccordé à la chambre d'avancement (36). La soupape (42) comporte une première surface de pression (48) pour exposition à la chambre d'avancement et une deuxième surface de pression (46) pour exposition à l'orifice de haute pression. Une troisième surface de pression (50) de la soupape est exposée à un orifice de pression d'échappement (54). Le volume de fluide se déplace entre l'orifice de haute pression (18) et la chambre d'avancement (36) losrque la soupape (42) est en position ouverte et il peut être limité à volonté pour différentes applications de forage. L'utilisation de la soupape (42) pour contrôler la haute pression dans la chambre d'avancement (36) a aussi pour résultat un état souhaitable pour le forage dans la roche. Cet état permet à l'orifice de haute pression (18) de ne pas être raccordé à la chambre d'avancement (36) pour la plus grande partie de la course de retour du piston, mais d'y rester raccordé pour la plus grande partie de la course d'avancement du piston.
Patent CA-2079914-C (CA)
Title: Austenitic, non-magnetic, stainless steel alloy and articles made therefrom
Inventor: DULMAINE BRADFORD A
IPC: C22C38/58
Filed: 1991-04-11
Granted: 2000-08-29
Abstract: An austenitic, non-magnetic, stainless steel alloy is disclosed which, in the wrought condition, is essentially ferrite-free and has a relative magnetic permeability of less than about 1.02, a room temperature 0.2 % yield strength of at least about 100 ksi, and good resistance to stress corrosion cracking in chloride environments, Broad, intermediate, and preferred ranges are disclosed in the table (I), the balance being iron. The alloy is balanced to be essentially ferrite-free and to provide goad chloride SCC resistance in accordance with the following relationships: w/o N ~ w/o Mn + w/o Cr-21.9/20; w/o Ni + 2(w/o Cu) ~ w/o Cr + w/o Mo-14.6/1.5; and w/o Mn < w/o Cr + w/o Mo.
Patent CA-2082132-C (CA)
Title: Dental cement
Inventor: RHEINBERGER VOLKER
IPC: A61K6/00
Filed: 1992-11-04
Granted: 1998-10-27
Abstract: The invention relates to a dental cement, a process for its preparation and its use.  The cement contains a polymerisable mono or polyfunctional carbonyl compound which corresponds to one of the following general formulae:             (see fig. I) (see fig. II) or (see fig. III) in which R1 may be an alkyl,  cycloalkyl,  alkoxy or aryl group or a combination thereof, R2 may  be  an  alkyl,  cycloalkyl,  alkoxy  or  aryl group,  a combination thereof or hydrogen, R3 may  be  an  alkyl,  cycloalkyl,  alkoxy  or  aryl  group,  a combination thereof or hydrogen, and X is either not present or may be O, NR, NH or S, where R may be an alkyl,  cycloalkyl,  alkoxy or aryl group or a combination thereof, and at least one of the groups R1, R2 or R3 is also substituted by a group Y containing at least one polymerisable vinyl group, except for  compounds  containing  naphthyl  groups substituted  with carboxylic acid anhydride functions.
Patent CA-2083790-C (CA)
Title: Process for the production of 2-substituted 4,6-dialkoxypyrimidines
Inventor: ESCHER ANDRE
IPC: C07D239/545
Filed: 1992-11-25
Granted: 2001-04-03
Abstract: A process is disclosed for the production of 2-substituted 4,6-dialkoxypyrimidines of the formula:   (see formula I) wherein R1 and R2 each independently represent a lower alkyl group, and R3 represents an R4-O-, R4-S- or   group, in which R4 is lower alkyl and R5 is hydrogen, lower alkyl or phenyl. The process includes cyclizing a cyanimidate of the general formula:   (see formula II) with a hydrogen halide to form a halopyrimidine derivative of the general formula:   (see formula III) The latter is then converted either with a compound of the formula:        M-R3     (IV) or with an alkyl amine of the general formula:     (see formula V) into the end product of general formula I.
Patent CA-2085258-C (CA)
Title: Method for growth promotion of animals and powder compositions containing killed microbial cells of bacteria belonging to genus clostridium
Inventor: KONO KAZUMI
IPC: A61K35/742
Filed: 1992-12-07
Granted: 2002-11-12
Abstract: The invention provides a method for the growth promotion of animals, comprising orally administering into animals killed microbial cells of bacteria belonging to the genus Clostridium, and also provides a powder composition, which comprises as essential ingredients killed microbial vegetative cells of bacteria belonging to the genus Clostridium, together with saccharides and/or starches.
Patent CA-2086161-C (CA)
Title: Inflatable borehole plug assemblies
Inventor: ROBBINS GEOFFREY
IPC: F42D1/18
Filed: 1992-12-23
Granted: 2004-05-18
Abstract: The invention relates to inflatable borehole plug assemblies and to means to control the time required for their inflation. In particular the invention enables inflatable borehole plug assemblies to be lowered to a preselected depth in a borehole before inflation occurs. The inflatable borehole plug assemblies of the invention comprise a sealed gas-tight inflatable container (10) containing a pressurised vessel (2) having pressure releasing means (7).   The pressurised vessel contains an inflating substance (4) and a tithe delay liquid (5), and is adapted so that on operation of the pressure releasing means (7): (i) the time delay liquid (4) is discharged from the pressurised vessel (2), thereby causing a time delay between the operation of the pressure releasing means (7) and release of the inflating substance (4) from the pressurised vessel (2), and (ii) after the time delay liquid (5) has been discharged the inflating substance (4) is discharged, thereby inflating the inflatable container (10) to form a borehole plug.
Patent CA-2088917-C (CA)
Title: Therapeutic ribozyme compositions
Inventor: ALTMAN SIDNEY
IPC: C12N15/54
Filed: 1991-08-15
Granted: 2002-11-12
Abstract: It is possible to target any RNA molecule for cleavage by RNase P by forming a hybrid region consisting of a short se-quence of base pairs followed ay a terminal 3'-NCCA sequence. In the preferred embodiment, the region is formed by addition of an external guide sequence consisting of a nucleotide sequence complementary to the targeted site which includes a 3'-NNCA, wherein the sequence hybridizes to the targeted RNA to form a short sequence of double-stranded RNA under conditions pro-moting cleavage of the substrate at the nucleotide at the 5' side of the base-paired region by the RNase P. Specificity is deter-mined by the complementary sequence. The sequence is preferably ten to fifteen nucleotides in length and may contain non-com-plementary nucleotides. These embodiments are particularly useful in the treatment of viral diseases and disorders associated with expression of specific proteins from mRNA.
Patent CA-2100771-C (CA)
Inventor: BARKER ALLAN
IPC: G09F11/23
Filed: 1991-11-22
Granted: 2001-01-02
Abstract: An apparatus (10) for counting the number of times a container has been opened or some other event has occurred, with particular usefulness in medicine bottles and the like. An outer cover portion (100) with a set of teeth (12) holds an indicator wheel (200) with an engaging pawl (220) and another set of teeth (230) and a ratchet wheel (300) with another pawl (320). The pawls and teeth in combination with a slot (150) for engaging the ratchet wheel result in a lost motion drive in which the outer cover (100) wilt turn relative to the indicator wheel (200) each time the container is opened or closed or some other event occurs. Various embodiments of the invention include means for using the cap with child-resistant containers, means for attaching the cap to containers, and means to facilitate the manufacture and assembly of the device.
Patent CA-2106370-C (CA)
Title: Antibiotic compounds
Inventor: BETTS MICHAEL J
IPC: C07D487/04
Filed: 1993-02-02
Granted: 2003-11-25
Abstract: The present invention relates to carbapenems and provides a compound of formula (I) or a pharmaceutically acceptable salt or in vivo hydrolysable ester thereof wherein: R1 is 1-hydroxyethyl, 1-fluoroethyl or hydroxymethyl; R2 is hydrogen or C1-4alkyl; R3 is hydrogen or C1-4alkyl; R4 and R5 are the same or different and are selected from hydrogen, halo, cyano, C1-4alkyl, nitro, hydroxy, carboxy, C1-4alkoxy, C1-4alkoxycarbonyl, aminosulphonyl, C1-4alkylaminosulphonyl, di-C1-4alky-laminosulphonyl, carbamoyl, C1-4alkylcarbamoyl, di-C1-4alkylcarbamoyl, trifluoromethyl, sulphonic acid, amino, C1-4alky-laxnino, di-C1-4alkylamino, C1-4alkanoylamino, C1-4alkanoyl(N C1-4alkyl)amino, C1-4alkanesulphonamido and C1-4al-kylS(O)n; wherein n is zero, one or two; with the proviso that there is no hydroxy or carboxy substituent in a position ortho to the link to -NR3-. Processes for their preparation, intermediates in their preparation, their use as therapeutic agents and pharmaceutical compositions containing them.
Patent CA-2114094-C (CA)
Title: Engine and method for turbo boosted operation of a mechanically assisted turbocharger in a two cycle engine
Inventor: GOTTEMOLLER PAUL
IPC: F02B3/06
Filed: 1994-01-24
Granted: 1999-01-12
Abstract: A two cycle, preferably diesel, engine has a turbocharger with an exhaust driven turbine and supplemental mechanical drive maintaining a fixed minimum turbine/engine speed ratio with fuel efficient freewheeling (fully exhaust sustained) turbine operation at higher speeds and loads.  A turbo boost system provides freewheeling turbine operation at intermediate speeds where it might or will not otherwise occur.  When an intermediate speed is reached at which freewheeling can be sustained but is not occurring, the system 1) temporarily increases engine speed to a predetermined higher level to accelerate the turbine and increase engine air flow, 2) increases engine fuel input to a higher level capable of sustaining freewheeling, and 3) reduces engine speed to the selected intermediate speed while maintaining a fuel input level adequate to maintain turbine freewheeling. Methods and means for providing and controlling intermediate speed freewheeling operation are disclosed.
Patent CA-2117057-C (CA)
Title: Pellicule plastique faconnee dans le moule; procede de fabrication
Inventor: RACKOVAN MITCHELL J
IPC: C09J7/29
Filed: 1992-09-09
Granted: 1999-04-27
Abstract: L'invention se rapporte à un film polymère orienté (10) pour opérations d'étiquetage dans le moule, qui est constitué par une feuille de film auto-enroulée sans enduit, recuite et étirée à chaud et qui comporte une couche de face (12) pour l'impression et une couche de base (14) contenant un adhésif thermoactivable. L'aptitude au thermorétrécissement du film (10) est équilibrée en épaisseur, pour réduire au minimum les gondolements et pour permettre l'impression du film (10) dans des presses d'impression d'étiquettes classiques. Un agent antistatique peut être inclus uniquement dans la charge pour la couche de base (14) qui contient l'adhésif thermoactivable. Dans la fabrication de récipients moulés par soufflage et étiquetés, on peut procéder à la manipulation de feuilles et d'étiquettes formées à partir dudit film à des vitesses élevées tout en conservant un alignement précis et une intégrité de dimensions et de position, même en l'absence de toute doublure de renforcement, les étiquettes ainsi produites conservant toutefois un comportement bon sur des récipients déformables tels que des bouteilles de shampoing.
Patent CA-2118352-C (CA)
Title: A signaling system for broadband communications networks
Inventor: LA PORTA THOMAS F
IPC: H04Q11/04
Filed: 1994-10-18
Granted: 2000-04-25
Abstract: A network architecture is designed to allow a communications service subscriber to select a signaling provider independently of a) the transport carriers which control the local loops for particular communications services, and b) the providers of those services. Upon the establishment of a signaling connection from a subscriber's terminal device to the signaling provider's network, the latter requests those services from the service providers selected by the subscriber for delivery over the local loops of the transport providers.
Patent CA-2120414-C (CA)
Inventor: HOCHSTRASSER FERDINAND
IPC: F16K15/14
Filed: 1994-03-31
Granted: 1998-06-16
Abstract: In a valve space surrounded by a housing is arranged a sleeve-shaped valve body made of elastomeric material.  The valve body is fastened with a fastening end thereof to the housing, and a flow channel thereof is flow-connected to an inlet orifice.  The valve body bears, with a middle portion of the valve body spanning a ventilation orifice, on a ventilation-valve seat formed on the housing.  There adjoins the middle portion a bead which the end portion, bearing under prestressing on the valve-seat element, adjoins on the other hand.  With water flowing in the direction of flow and also with an equal pressure prevailing on the inlet side and outlet side, the valve body bearing on the ventilation-valve seat prevents the outflow of water through the ventilation orifice.  With a negative pressure prevailing on the feed side, the middle portion lifts off from the ventilation-valve seat, in order to ventilate the outlet orifice.
Patent CA-2120795-C (CA)
Inventor: MALLOY GARY J
IPC: B29C33/76
Filed: 1994-04-07
Granted: 1998-09-15
Abstract: Reusable core apparatus (10, 12, 14, 16) for a casting mold (1) is disclosed. The apparatus includes a first core mechanism (10, 12) for being disposed in a casting cavity (2) of the mold to define a first internal casting surface within the cavity, a second core mechanism (14, 16) for being disposed in the casting cavity to define a second internal casting surface in the casting cavity, and an aligning and securing mechanism (22, 24, 30, 32, 36, 42) for securing the first and second core mechanisms together in a predetermined engaging relationship within the casting cavity. The aligning and securing mechanism comprises cooperating joint members formed integrally with the first and second core means. The cooperating joint members maintain the first and second core mechanisms in the predetermined engaging relationship while an article is being cast in the mold and permit the first and second core mechanisms to be moved away from each other out of the predetermined engaging relationship after the casting process so that the first and second core mechanisms may be directly and easily disengaged with each other and from the cast article and subsequently reused in casting additional articles. The apparatus also includes a mechanism, including a magnet disposed with one of thecooperating joint members, for maintaining the first and second core mechanisms in a temporary engaging relationship as the core mechanisms are being assembled together.
Patent CA-2123566-C (CA)
Inventor: SHIMIRAK GERALD L
IPC: H04Q1/02
Filed: 1992-12-03
Granted: 2003-04-01
Abstract: An environmentally protected electrical socket (20) and plug (50) assembly retains environmental security throughout re-peated connections and disconnections. The socket and plug assembly includes a socket containing an electrical conductor and adapted to insertably receive a plug, an environmental sealant (90) at least partially filling the socket so that the sealant is at least partially displaced from the socket when the plug is inserted into the socket, and an elastomeric containment means (30) for con-taining displaced sealant when the plug is inserted into the socket and for urging the sealant back into the socket when the plug is removed.