baber/WOPTO huggingface dataset:
Patent CA-2015521-A1 (CA)
Title: Shroud assembly for axial flow fans
IPC: F04D29/54
Filed: 1990-04-26
Abstract: ABSTRACT OF THE DISCLOSURE     An axial fan is disclosed that includes a hub supported for rotation around the longitudinal axis of the fan, a plurality of impeller blades attached to the hub and extending radially from the axis of rotation, a shroud assembly including a band encircling the blades and spaced from the tips of the blades a sufficient distance to provide ample clearance to avoid contact between the blades and the band during shipment and operation of the fan, the shroud further including an orifice positioned upstream of the blades for preventing air from flowing between the orifice and the band, the orifice having a downstream end located adjacent to but spaced from the impeller blades and having a diameter such that the impeller blades extend outwardly from the hub beyond the orifice so that the flow of air over the tips of the impeller blades is substantially reduced, which increases the efficiency of the fan.
Patent CA-2017515-A1 (CA)
Title: Capillary electrophoretic device employing structure permitting electrical contact through ionic movement
Inventor: ZARE RICHARD N
IPC: G01N27/447
Filed: 1990-05-24
Abstract: ABSTRACT A capillary tube has a structure in its wall that permits ions to flow but no substantial amount of electrolyte  to  move  therethrough.    The  structure therefore  permits  electrical  contact  between  the electrolyte inside the tube and the outside environment without diluting the electrolyte.  The structure forms only a small part of the side wall so that the tube retains its structural integrity and can be used in electrophoresis without requiring structural support. In the preferred embodiment, the structure is formed by drilling a hole in the side wall, filling the hole with glass powder and fused silica and heating the mixture to form a frit structure to plug the hole.   The frit structure permits ions to flow but substantially no electrolyte  to  move  therethrough.    Electrophoretic samples exiting from the end of the tube are not diluted and can be continuously collected, such as on top of a moving plate.
Patent CA-2017522-A1 (CA)
Inventor: HARTLEY JAMES L
IPC: C07H21/00
Filed: 1990-05-25
Abstract: In  the  process  according  to  this  invention,   an amplification  procedure  is performed on a first sample in which  one  or  more  of  the four  normal  ribonucleoside triphosphates  (rNTPs)  or  deoxyribonucleoside  triphosphates (dNTPs)  is  replaced with an exo-sample nucleotide.   After amplification, any contaminating amplified product that may be remaining is subjected to a physical, chemical, enzymatic, or biological treatment which renders nucleic acid containing the exo-sample  nucleotide  substantially  unamplifiable.     The treatment may be done as a separate step or it may be done in the  presence of  a  second  sample  containing  nucleic  acid sequences  to  be  amplified.   The  amplified  nucleic  acid sequences derived from the first sample which contaminate the second sample are not further substantially amplified during amplification of nucleic acid sequences of the second sample.
Patent CA-2021298-A1 (CA)
Inventor: OKIURA KUNIO
IPC: F23D1/00
Filed: 1990-07-16
Abstract: A burner apparatus for pulverized coal comprises a pulverized coal supply pipe, a starter oil burner extending within the pulverized coal supply pipe to define therebetween a tubular passage through which a mixture of combustion air and pulverized coal passes into a furnace, a flame holder provided at an outer periphery of one end of the pulverized coal supply pipe facing to the furnace, a cylindrical member disposed in the tubular passage for dividing a part thereof into two coaxial passage parts, and a valve adapted to close an axial end opening of the cylindrical member for varying a concentration of pulverized coal in a radial outer passage part of the coaxial passage parts.
Patent CA-2021738-A1 (CA)
Title: Method for measuring a physical quantity represented by random pulses or transformable into pulses, and its application to gamma spectrometry
Inventor: BOUDAN MARC
IPC: G01T1/17
Filed: 1990-07-23
Abstract: According to the invention, a measurement chain (20, 22, 40) is used which supplies a result relating to the said quantity, an iterative mathematical simulation is performed taking into account the random variable character of the phenomenon measured, by distinguishing the evolution of single, double, triple events, etc., in the electronic processing means (40) of the chain, which is optimised to this end. During the simulation an approximate result is determined relating to the quantity and the result of the simulation is compared to the result of the measurement. Application to the measurement of the volume activity of radio-active isotopes present in a fluid in circulation. 
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Patent CA-2024193-A1 (CA)
Title: Film extrusion apparatus including a quickly replaceable chill roll
Inventor: MAINSTONE KENNETH A
IPC: B29L7/00
Filed: 1990-08-29
Abstract: Abstract of the Disclosure In extrusion apparatus for producing a continuous film of thermoplastic material, either as part of an extrusion coating or laminating process or to cast a continuous film, a chill roll which receives the film directly from the extruder is mounted on a wheeled carriage whereon it can be moved lengthwise into and out of operating relation with the other components of the apparatus without requiring lifting thereof or of other parts of the apparatus. The carriage may be proportioned to move directly between the apparatus in which it is to be used and the floor of the mill, or it may be mounted on a separate wheeled cart on which it is transported to and from the extrusion apparatus. Particularly in the latter case, provision is made for both vertical and lateral adjustment of the base structure on which the carriage is supported in its operating relation with the extruder.
Patent CA-2024829-A1 (CA)
Title: Elastomeric covering having conformable interior
Inventor: ACKLAND GORDON L
IPC: B29C61/06
Filed: 1990-09-07
Abstract: An elastomeric covering for connections in electrical cables, having improved sealing and filling characteristics. The covering utilizes an elastomeric (pre-stretched) tube which is maintained in a radially expanded state by an inner removable core. A conformable material is interposed between the pre-stretched tube and the core whereby, when the core is removed, the elastic forces in the pre-stretched tube change the shape and dimensions of the material to correspond to the underlying surface. The conformable material may be insulative, with or without dielectric fillers. Various embodiments are disclosed for in-line splices, end-seals and terminal insulators.
Patent CA-2026269-A1 (CA)
Inventor: DUFFIELD DANIEL A
IPC: G06Q40/00
Filed: 1990-09-26
Abstract: A method of assisting an operator in balancing large transactions with subtotals as occurs in the banking industry.  A typical deposit for a bank may include several bundles of checks, with each bundle being wrapped in an adding machine tape which has thereon a total monetary amount for the checks included in that bundle, and it also includes a deposit slip which includes a grand total of the monetary amounts of all the groups of checks associated with the deposit slip.  Balancing such a large transaction is performed on a bank proofing machine.  A Proof Total (associated with the grand total) and a Subtransaction Total (associated with each group of documents being run) are maintained to assist an operator in finding an error when one does occur.  The current "adding machine mode" of balancing is discussed for comparison with the method of this invention.
Patent CA-2026368-A1 (CA)
Inventor: VAN DER VEEN ALBERTUS C
IPC: H04B1/04
Filed: 1990-09-27
Abstract: ABSTRACT         The invention concerns a combination of a transmitter/receiver  (12,  13)  having a predetermined frequency/wavelength and an antenna (15), the antenna comprising a coiled wire portion (16) one end of which is connected to the output (14) of the transmitter/receiver and a straight wire portion (17) one end of which is connected in series to the other end of the coiled wire portion, the combined length of the portions being no more than one quarter wavelength,  the inductive reactance of the coiled wire portion (16) being selected to both substantially tune out the capacitive reactance of the transmitter (12, 13) and the capacitive reactance of the straight wire portion so that the overall impedance of the system is predominantly resistive, and at least the majority of the coiled portion (16) being external to the conductive portion (12) of the transmitter so as to effectively add to the electrical length of at least the straight portion (17) and itself act as a radiator.  The system is particularly designed to be used with no ground plane or only a partial ground plane and with the antenna length less than quarter wavelength.    This is particularly useful in the sport of falconry.  The system of the invention gives a higher output than a conventional quarter wavelength straight antenna with no ground plane.
Patent CA-2026481-A1 (CA)
Title: Intergrated paraffin upgrading and catalytic cracking processes
Inventor: HARANDI MOHSEN H
IPC: C10G63/08
Filed: 1990-09-28
Abstract: ABSTRACT       A process is disclosed for decreasing the emission of airborne pollutants from an oil refinery and for upgrading a paraffinic feedstream to olefins and/or aromatics.  Flue gas from a fluid catalytic cracking process catalyst regenerator is cooled to supply the endothermic heat of reaction for a paraffin upgrading reaction, eliminating the need for an additional process furnace. The process further decreases airborne pollutant emissions by upgrading paraffinic fractions which would otherwise be burned as fuel.
Patent CA-2026646-A1 (CA)
Title: Liquid detergent fabric softening laundering composition
Inventor: MADORE LINDA M
IPC: D06M13/262
Filed: 1990-10-01
Abstract: LIQUID DETERGENT FABRIC SOFTENING LAUNDERING COMPOSITION                     ABSTRACT           A liquid detergent having fabric softening properties and including an improved fabric softening agent. The fabric softening agent is a silicone fabric softening agent selected from the group consisting of a polyorgano-siloxane which is free of reactive organic functional groups and having a viscosity in excess of about 5,000 centistokes measured at 25°C.; a polydiorganosiloxane gum having a viscosity of about two million centistokes, or a mixture of the said gum with either a low viscosity polydiorganosiloxane or with a volatile cyclic silicone such as octamethylcyclo-tetrasiloxane or decamethylcyclopentasiloxane.  Certain emulsions of a highly branched and cross-linked silicone polymer may also be employed.
Patent CA-2026748-A1 (CA)
Inventor: JEPSON CARL T
IPC: G05B19/41
Filed: 1990-10-02
Abstract: A method of eliminating surface gouging in computer-aided control of cutter paths, comprising the steps of: (a) generating three-dimensional computer images of a surface to be emulated and of a revolving cutter head; (b) imposing an x-y coordinate grid work onto each image and assigning a z coordinate to the cutter depth and surface height for each grid; (c) while digitally moving the cutter head over the emulated surface, determining the highest sum of z coordinates for each grid within the superimposed area; and (d) using such highest sum as the lowest z coordinate for a cutter reference point at each such digital position of the cutter, the highest sum being adjusted for any difference between the reference point and cutter depth at such highest sum grid.
Patent CA-2028202-A1 (CA)
Title: Roller elements for playground slides
Inventor: SHIRATORI KOJI
IPC: A63G21/00
Filed: 1990-10-22
Abstract: ABSTRACT 1. A roller element for a slide comprising an outer cylinder,  an  inner pipe and connector members  for making connections therebetween all integrally formed of a material having  a  suitable  elasticity,  wear  resistance,  weather resistance, etc. wherein the outer cylinder has a thickness sufficient  to  make  it  deformable,  and  stopper  slightly shorter than the space formed between the outer cylinder and the  inner  pipe  are provided  to  limit  the  amount  of deformation of the outer cylinder,  alternatively ribs for connector members which are connected to the outer cylinder and  inner  pipe  on  a reduced-diameter  side  of  the  outer cylinder,  and  connected  to  the  inner  pipe  alone  on  an increased-diameter side of the outer cylinder to form a gap of about 2-3 mm between the outer edge of the inner pipe and the inner face of the outer cylinder.
Patent CA-2030066-A1 (CA)
Title: Polymer treatment process
Inventor: BRADFORD WILLIAM G
IPC: C08F6/08
Filed: 1990-11-15
Abstract: A process is provided for removing rhodium-containing catalyst residue from a solution of hydrogenated nitrite rubber. The process utilizes an ion exchange resin which must be both macroreticular and modified with a selected amine, thiol, carbodithioate, thiourea and/or dithiocarbamate functional group. The process is capable of removing rhodium from viscous rubber solutions containing less than 10 ppm rhodium.      In a preferred embodiment, the process is undertaken in an ion-exchange column.
Patent CA-2030263-A1 (CA)
Title: Implantable pharmacological defibrillator with automatic recognition of ventricular fibrillation
Inventor: CAMMILLI LEONARDO
IPC: A61N1/365
Filed: 1990-11-19
Abstract: The invention provides an automatic implantable defibrillator with the following essential characteristics: a) a circuitry (1,2,3,6,7,8) for reliable recognition of a ventricular fibrillation state b) a paumaker (5) for trying to stop the fibrillation if it is an asystole c) if not, effecting defibrillation not by electrical pulses fed to the heart but by a bolus of medicaments (or solutions under particular physical conditions, such as a cold bolus at 30 DEG C) fed by a hydraulic system (12) into the coronary sinus or into a coronary artery by a retrograde path, to rapidly pervade the coronary circuit.
Patent CA-2030674-A1 (CA)
Title: Disinfecting a fluid with ultraviolet radiation
Inventor: SHORT EUGENE N
IPC: C02F1/32
Filed: 1990-11-22
Abstract: A process of exposing a fluid medium, such as machine oil, to radiant energy and a device to carry out that process include providing at least two juxtaposed, elongated radiant energy source, such as ultraviolet germicidal radiation sources, providing a passage between the sources that is typically less than an inch thick and that has walls capable of transmitting the radiant energy, providing for fluid flow in a direction substantially parallel to the radiant energy sources. passing a fluid medium in a thin film through the passage, and simultaneously exposing the fluid medium to the radiant energy by irradiating the fluid medium with the radiant energy sources. Preferably, the passage is in the configuration of an annulus surrounding one of the radiant energy sources, and a plurality of radiant energy sources is arrayed around the passage.
Patent CA-2031363-A1 (CA)
Title: Process for carrying out an inspection round of nuclear installations
Inventor: PETITCLERC JEAN-LOUIS
IPC: G01T1/00
Filed: 1990-12-03
Abstract: DESCRIPTIVE  ABSTRACT            Process for carrying out an inspection or monitoring round of a nuclear site (5) consisting of recording in a central computer (22) connected to a radiofrequency transmitter/receiver or transceiver (24) a combination or sequence of of different collection or reading points (12) grouping sensors (10) constituting the round to be performed. This sequence is copied again into a memory of a portable microcom-puter (26) carried by the watchman during the round and connected to a radiofrequency transceiver (28).  Each connection point (12) is validated and this validation is transmitted to the central computer (22).  The sensors are checked and any abnormal condition is indicated to the central computer (22).  All the checks carried out are recorded in the portable microcomputer (26) and copied again at the end of the round into a central computer (22) in such a way that they can be processed.          (single drawing)
Patent CA-2031507-A1 (CA)
Title: Proteins which regulate the expression of vertebrate mhc class ii genes, dna sequences encoding them and pharmaceutical compositions
Inventor: MACH BERNARD
IPC: C07K14/47
Filed: 1990-04-18
Abstract: PROTEINS WHICH REGULATE THE EXPRESSION OF VERTEBRATE MHC    CLASS  II  GENES,  DNA  SEQUENCES  ENCODING  THEM  AND          PHARMACEUTICAL COMPOSITIONS                     A B S T R A C T            Disclosed are purified proteins which naturally occur in vertebrate cells expressing MHC class II genes, regulate the expression of vertebrate MHC class II genes, and bind to DNA sequences controlling the expression of these MHC class II genes.   Furthermore,  DNA sequences encoding said proteins are disclosed.   Still  further,  recombinant DNA molecules containing  said  DNA  sequences  are  disclosed  as  well  as transformed microorganisms and processes in which these are used  for  the  production  of  said  proteins.    Finally, pharmaceutical compositions  for the treatment of diseases which are caused by an aberrant expression of MHC class II genes are disclosed.
Patent CA-2032546-A1 (CA)
Title: Ester of undecylenic acid used as deodorant for animal manures
Inventor: MENASSA AIME
IPC: A01N37/06
Filed: 1990-12-18
Abstract: The invention relates to a deodorant for liquid manure. This substance comprises an undecenoic acid ester. It represents an effective odour-masking substance right from the storage of the liquid manure and can be spread particularly easily.
Patent CA-2032901-A1 (CA)
Title: Remote control command center
Inventor: GAUTHIER MICHEL D
IPC: A47B81/06
Filed: 1990-12-21
Abstract: ABSTRACT           This invention is designed to be used as a platform for uniting, retaining and protecting electronic remote controls. The invention's angular design eliminates the need to physically handle the remote controls thus allowing their operation from a table top, sofa etc..without picking them up. The remote controls are attached to the invention by way of non-permanent fasteners allowing for removal and replacement
Patent CA-2034019-A1 (CA)
Title: Bag closing apparatus
Inventor: HOLMES JACK H
IPC: B65B51/04
Filed: 1991-01-11
Abstract: BAG CLOSING APPARATUS                 Abstract of the Disclosure An idler rim is freely rotatably mounted adjacent the first closing ring of a bag closing device.   In one embodiment, an idler rim is also placed on a pinch roller that engages the closing ring.  These idler rims allow the package to be brought laterally more closely to the closing station so that the closure can be placed more tightly on the end of the package.   There also is provided a bracket for mounting the entire bag closing device so that the closing device can be adjusted pivotally and linearly toward the conveyor.
Patent CA-2034096-A1 (CA)
Title: Controlled absorption naproxen formulation for once-daily administration
Inventor: BOURKE EDWARD A
IPC: A61K9/54
Filed: 1991-01-14
Abstract: A naproxen formulation for oral administration on a once-daily basis comprises a first portion of the naproxen formulated in a multi-particulate pellet form designed to release the drug at a rate sufficient to maintain therapeutically effective blood levels substantially over 24 hours when administered each day on a once-daily basis and, optionally, a second portion of the naproxen formulated so as to release the drug promptly following administration so as to obtain a relatively immediate therapeutic response.
Patent CA-2035857-A1 (CA)
Title: Leadframe
Inventor: ICHIKI KIKUO
IPC: H01L23/495
Filed: 1991-02-06
Abstract: ABSTRACT A leadframe comprising a thin-walled portion that is formed in a dam bar portion or a portion that extends from the dam bar portion to a pair of inner leads which are adjacent thereto.  By cutting the dam bar portion along the thin-walled portion, the stress that is imposed on a cutting punch is reduced.  Thus, it is possible to extend the lifetime of the cutting punch and also to minimize the shear droop formed on the cut surface.  The leadframe further has a thick-walled portion formed at the position where the thin-wall portion is formed.  The thick-walled portion serves to support the thin-walled portion when the dam bar portion is cut off, thus preventing the dam bar portion from tilting.  Accordingly, the dam bar cutting operation can be conducted stably without undesired movement of the dam bar portion, and the stress that is imposed on the leadframe can be controlled so as to be well balanced.
Patent CA-2037568-A1 (CA)
Title: Separator
Inventor: SMISSON ROBERT P M
IPC: B01D21/02
Filed: 1991-03-05
Abstract: ABSTRACT     There is described a low energy separator for separating solid components out of a liquid mixture, comprising (a) a vessel having a cylindrical outer wall and a base at one end, (b) a body which is provided within the vessel and which defines with the base an annular opening spaced from the outer wall, (c) an inlet for introducing the liquid mixture into the vessel said inlet opening directly into the vessel, (d) an outlet in the upper region of the vessel for removing from the vessel liquid from which solid components have been separated, (e) a primary annular dip plate extending downwardly towards the base from an upper region of the vessel and spaced from the outer wall of the vessel, and (f) means for promoting a rotational movement of liquid and suspended solids within the vessel, said rotational movement being sufficient to cause or enhance an inward sweeping effect towards the annular opening on solids accumulated at the base of the vessel, whilst being of sufficiently low energy that separation of the solids components of the liquid in the vessel is brought about primarily by gravity; characterised in that the separator also includes a central upper chamber and a means for trapping and concentrating buoyant solids material which have already entered the vessel in said central upper chamber.
Patent CA-2038388-A1 (CA)
Inventor: KOSINSKI LEONARD E R
IPC: C08K5/3492
Filed: 1991-03-15
Abstract: POLYACETAL COMPOSITIONS CONTAINING AT LEAST ONE ARYLATED PIPERIDINYL-s-TRIAZINE HINDERED            AMINE LIGHT STABILIZER Abstract of the Disclosure Polyacetal compositions containing 0.05 to 5 weight percent of an alkylated piperidinyl-triazine hindered amine light stabilizer wherein the hindered N4 atom in the piperidine ring of the stabilizer is alkylated with a C1-C6 alkyl group, preferably methyl, said compositions being relatively stable upon exposure to UV light The compositions possess stability during melt processing and do not significantly lose physical properties upon exposure to heat and light.
Patent CA-2040539-A1 (CA)
Title: Lubricating oil composition containing combination of succinimide and mannich base dispersants
Inventor: HARSTICK CHRISTIAN S
IPC: C10N30/06
Filed: 1991-04-16
Abstract: ABSTRACT       Effective prevention of low temperature sludge formation and  significantly reduced wear  is  obtained  utilizing  a lubricating oil composition having a combination dispersant of a hydrocarbon-substituted succinimide and a Mannich condensation product.
Patent CA-2043754-A1 (CA)
Title: Process and a device for coating engine pistons
Inventor: ALT PETER
IPC: B41M1/12
Filed: 1991-06-03
Abstract: A b s t r a c t A process and a device for coating engine pistons The coating of the cylindrical periphery of engine pistons (1) with coating compound, in particular slippery pastes, is performed by means of screen printing. The pistons (1) can be coated in the vertical position around their vertical central longitudinal axis (X) as they rotate past a screen printing stencil (2).            Fig. 2