baber/WOPTO huggingface dataset:
Patent CA-2019946-A1 (CA)
Inventor: SAVARD DONALD D
IPC: F16L55/11
Filed: 1990-06-27
Abstract: The plug is formed of fibrous material held together by a wax binder in the form of a cylindrical body.  The body is adapted to fit closely into the bore of an open-ended pipeline.          The body has a reduced diameter inner end portion.  A thick band of asphalt-base sealant is applied to the inner surface of the pipe at the location to be taken up by the reduced diameter portion.   The vertical inner end surface of the plug is also coated with the sealant.   When the plug is inserted into the line,  its close fit holds it in place and the sealant seals across  the  bore.    The  plug  functions  to  isolate  residual hydrocarbon vapours in the line while a new section of pipe is tied  in.    The  plug  disintegrates  when  contacted with  the subsequent oil flow.
Patent CA-2025070-A1 (CA)
Title: Recombinant aprotinin variants genetically engineered process for the microbial preparation of homgeneously processed aprotinin variants and the therapeutic use thereof
Inventor: EBBERS JURGEN
IPC: A61P7/00
Filed: 1990-09-11
Abstract: An aprotinin with a deletion of the amino acid proline in position 2 or an addition of alanine-(-2)-glutamine-(-1). Such aprotinin is useful as an active ingredient in medicaments.
Patent CA-2025345-A1 (CA)
Title: Process for treating fatty acids
Inventor: HEYNEN ANTONIUS J M
IPC: C07C51/42
Filed: 1990-08-22
Abstract: ABSTRACT      A mixture of branched fatty acids containing 18 carbon atoms such as commercial iso-stearic acid is treated to lower the freezing point to below -10°C, by mixing with urea and a lower alcohol, such as methanol, and filtering.  The product is useful in the production of low freezing point esters for use as lubricants.
Patent CA-2028247-A1 (CA)
IPC: B29C45/26
Filed: 1990-10-25
Abstract: ABSTRACT            MODULAR UNSCREWING MOLD APPARATUS A modular unscrewing injection mold and core assembly therefor includes a mold base, a core receiving opening extending through the mold base, the core assembly being removably mounted in the core receiving opening and including first and second core shells that may be secured together to receive a rotating core therebetween; a mold core rotatably mounted between the shells; a pinion gear formed on the mold core for being driven by a rack in the mold base, for rotating the mold core; the core assembly being releasably secured in the base.
Patent CA-2028342-A1 (CA)
Inventor: TAMBAY JEAN P
IPC: B62D53/10
Filed: 1990-10-23
Abstract: ABSTRACT OF THE DISCLOSURE      An anti-jackknifing coupling device, for an articulated vehicle such as a tractor-trailer combination, comprises a base member for mounting upon the tractor.   A turntable member is rotatably mounted upon the base member, and a trailer support member is supported upon, and rotatable with, the turntable. The trailer support member, usually called a "fifth wheel", serves to releasably couple the trailer.  A piston-and-cylinder device is connected at its one end to the turntable and at its other end to  the  base  member,  so  that  it  extends  substantially diametrically across the turntable member when the vehicle is straight.  As the tractor and trailer pivot, the trailer support member and turntable rotate together relative to the base member, causing contraction of the piston-and-cylinder device.   The trailer support member will usually be able to tilt relative to the turntable about a lateral pivot axis. The piston-and-cylinder device preferably extends in the same vertical plane as this pivot axis,  when the vehicle is straight.   The piston-and-cylinder device may be connected to an accumulator, conveniently containing a resilient medium to provide a restoring force as the vehicle straightens.  Flow restrictors and valves restrict fluid flow as the tractor and trailer pivot out of alignment, but not when the vehicle is straightening.
Patent CA-2029450-A1 (CA)
Title: Inside corner bead for wall plastering
Inventor: ABREU CARLOS G
IPC: E04F13/06
Filed: 1990-11-07
Abstract: ABSTRACT     An interior corner bead for drywall interior corners comprises a thin, elongate strip with three lengthwise extending parallel folds.  The strip has a cross-section including two flanges forming an interior angle ranging from 90 degrees to 135 degrees between one another.  The flanges are separated from one another and are connected together by two similar curved sections, each extending between a respective two of the folds.  Each of the curved sections is convex on the inside of the angle.  In a preferred form of bead, each curved section extends to a central one of the three folds located about 1/8 inch from the plane of the flange immediately adjacent to the respective curved section.
Patent CA-2029459-A1 (CA)
Inventor: COLUMBUS RICHARD L
IPC: B04B11/00
Filed: 1990-11-07
Abstract: BLOOD COLLECTION DEVICE            ABSTRACT A device is disclosed that causes phase separation of whole blood, using much lower centrifugal forces.  As a result, lymphocytes are separated from blood cells having specific gravities of 1.08 g/ml or higher.  The device features a separation chamber arranged so that its long dimension or axis is parallel, not perpendicular, to the spin axis, and a valve that allows automatic removal of the lighter phase(s).  The valve is constructed to respond only to the head of liquid pressure generated by an increased centrifugal force, and not to that incresed force alone.
Patent CA-2030567-A1 (CA)
Title: Photo doll
Inventor: HUSSAIN MUKARRAM
IPC: A63H3/00
Filed: 1990-11-22
Abstract: ABSTRACT        THERE ARE THREE WHEELS AT THE BOTTOM; ONE IN FRONT AND TWO AT THE BACK.  THE FRONT WHEEL IS PERMANENTLY SET TO MOVE THE DOLL IN A CIRCULAR WAY, WITH A DIAMETER OF ABOUT 20 INCHES.  THE DOLL IS PROGRAMMED TO STOP MOVING AFTER EVERY FIVE SECONDS OR SO, SUBSEQUENTLY CAUSING THE ARMS WITH THE CAMERA TO BE RAISED.  THE CAMERA WOULD FLASH ONLY AFTER THE ARMS ARE RAISED TO THE DESIRED HEIGHT, CAUSING A SWITCH ON THE INSIDE TO BE HIT AND CON???UENTLY ACTIVATING THE FLASH.
Patent CA-2030991-A1 (CA)
Title: Vehicle with axle suspension device with gas spring suspension, and control system therefor
Inventor: ZANTINGE JOHAN MICHIEL
IPC: B60G21/02
Filed: 1990-11-28
Abstract: ABSTRACT       In an axle suspension device for a vehicle with gas spring suspension and roll stabilisation an essentially rigid stabilizer body is used which is hingedly connected in two points to the axle to be stabilized, each near one end thereof, and in two points to the  vehicle  frame,  which  latter  connections  are  formed  by substantially vertical hydraulic cylinders with piston rods, having a sliding bearing in the cylinders, which can absorb transverse forces, the cylinders or piston rods thereof being connected to the frame by rigid connections.      A  control  system  for  such  cylinders  has  a pressure transformer with a larger surface, which is directly or indirectly under the pressure of the gas in the gas spring system, and has a smaller surface, on which the hydraulic pressure in said cylinders acts in the opposite direction, said surfaces being connected for common movement, A control pressure exerted by a fluid acting on the other side of said larger surface in the same direction as said hydraulic pressure being variable to control this  system depending on  one  or  more  parameters  on  the  basis  of  driving or  road conditions.      All this allows a simple and reliable design,  safety and adaptation of roll stabilizing to different conditions for maximum comfort.
Patent CA-2035628-A1 (CA)
Title: Flexible pouch with folded spout
Inventor: DUNTON DAVID P
IPC: B31B19/84
Filed: 1991-02-04
Abstract: ABSTRACT OF THE DISCLOSURE     A flexible pouch formed from a single sheet of plastic material folded over upon itself along an umbrella like fold assembly to provide the opposed walls of A chamber for storing a product and an optional second sheet to form the bottom of the chamber.  The walls and the bottom are sealed along their periphery to form the chamber.  The pouch has a self-opening spout formed in part by the fold assembly which expands and springs open when the sealed end of the spout is cut off.  The fold assembly not only provides a large spout opening, but also provides a spring force which keeps the spout open so that all the product may be emptied from the chamber.
Patent CA-2036522-A1 (CA)
Title: Postcard blank, postcard blank assembly and an in-line postcard imaging system
Inventor: MICHLIN IRVING
IPC: B42D15/02
Filed: 1991-02-18
Abstract: ABSTRACT OF THE DISCLOSURE    The multiple postcard blank assembly can be fed through imaging machines to obtain imaging of multiple postcards in a simultaneous manner.  Each blank of the assembly is provided with heat resistant glue to provide for the bonding of the foldable sections of the blank together.  The blanks may be used for one way mailing or may be provided with a business reply region for two way mailing.  An in-line postcard imaging system is used to image, separate, fold and seal the postcards in a single continuous manner.
Patent CA-2036643-A1 (CA)
Title: Sulfur-containing esters as synergists of amine and phenolic antioxidants
Inventor: STURM BUDD H
IPC: C08K5/13
Filed: 1991-02-19
Abstract: The present invention relates to thioesters having the structural formula:   see Formula wherein R X is selected from the group of formulae consisting of:   see Formulae R1, R2 and R3 are independently selected from the group of radicals consisting of hydrogen or methyl; R4 and R5 are independently selected from the group of radicals consisting of hydrogen, alkyls having 1 to 18 carbon atoms, aryls having 6 to 10 carbon atoms, aralkyls having 7 to 9 carbon atoms, and radicals of the formula:   see Formula and R6 is selected from the group of radicals consisting of alkyls having 1 to 24 carbon atoms, aryls having 6 to 12 carbon atoms and aralkyls having 7 to 12 carbon atoms.      These thioesters are particularly useful as a synergist for conventional phenolic and amine antioxidants.
Patent CA-2039559-A1 (CA)
Inventor: CLARKE JOHN T
IPC: B32B7/03
Filed: 1991-04-02
Abstract: An oriented strand board product is provided. The board is comprised of a baseboard having three wood strand layers, the wood strands being oriented in space with respect to a board forming machine such that a core layer is comprised of wood strands oriented generally in a random or cross-machine direction and each adjacent layer is comprised of coarse and fine wood strands oriented generally in the machine direction and wherein the wood strands comprising each adjacent layer are formed with the coarsest strands located nearest the core layer and the finest strands are located nearest the outer surfaces of each outer board layer. The OSB board product is clad with a dry felted wood fiber overlay on one planar surface of the baseboard.
Patent CA-2041135-A1 (CA)
Title: Method for the photochemical isomerisation of organic compounds under the influence of a photosensitizer
Inventor: PAULI LOUIS F
IPC: C07J7/00
Filed: 1991-04-24
Abstract: The invention relates to a method for the photochemi-cal isomerisation of organic compounds, in particular for the photochemical conversion of tachysterol compounds into previtamin D compounds and of trans-vitamin D compounds into cis-vitamin D compounds, under the influence of radiation, by exposing a solution of the organic compound to be converted in the presence of a non-polymeric photosensitizer to light with approx. 300-1,000 nm wavelength, and by then isolating the resulting product, wherein a substituted thiophene derivative having a substantial absorption in said wavelength region is used as the photosensitizer. The invention also relates to a new photosensitizer to be used for said isomerisation reaction.
Patent CA-2042389-A1 (CA)
Title: Dual current sensing driver circuit
Inventor: HOFFMAN JOHN P
IPC: H02M3/155
Filed: 1990-10-09
Abstract: Abstract of the Disclosure Dual Current Sensing Driver Circuit A driver circuit (10) for an inductive load (12), such as a solenoid winding (16), includes flyback and energization current sensors (28,40) which respectively sense the current through the coil during flyback and energization.  The flyback current sensor (28) includes a flyback current resistor (30) disposed in the flyback current path of the winding (16) for producing a flyback signal proportional to the flyback current.  The energization current sensor (40) includes an energization current resistor (42) disposed within the energization current path of the winding (16).  The energization current resistor (42) is adapted to produce an energization signal in response to the energization current flowing through the winding (16).  Control of the solenoid winding (16) is effected by a switch (24) which connects and disconnects the winding (16) from a power source (VB) in response to the duty factor of a control signal.  A first summing amplifier (54) receives the flyback and energization signals and produces an actual current signal in response to the received signals.  A second summing amplifier (60) receives the actual current signal and a desired current signal and produces an error signal in response to a difference between the actual and desired current signals.  A first comparator (68) receives the error signal and produces the control signal responsive to the error signal, wherein the duty factor of the control signal is responsive to the magnitude of error signal.  The duty factor of the control signal is constantly adjusted in this manner to maintain the solenoid current at the desired level.
Patent CA-2043401-A1 (CA)
Title: Magazine for a firearm
Inventor: CHESNUT M GAINES
IPC: F41A9/69
Filed: 1991-05-28
Abstract: ABSTRACT    A magazine  (10)  stores a plurality of cartridges for  sequential  loading  into  a  firearm  (12).    The magazine  (10)  comprises  a  storage  zone  (32),  a transition zone  (34),  and a loading  zone  (36).   The cartridges are configured in a double-X pattern in the storage zone (32) and a straight stack configuration in the loading zone (36).   Rails (146-148) hold nose end portions of the cartridges while allowing rim ends of the cartridges to spread apart into contact with the sidewalls  (42-44)  of the storage zone  (32).   As the cartridges pass through the transition zone (34)  the inwardly sloping sidewalls  (56-58)  bring the rim ends back together into the straight stack configuration.
Patent CA-2044588-A1 (CA)
Inventor: UZAN MICHEL
IPC: B01L99/00
Filed: 1990-11-16
Abstract: A washing device is provided which can be used in solid phase heterogeneous immunoassays, using a solid support in the form of magnetic balls. The washing device includes four means for application of a magnetic field to the lower part of a plurality of test tubes containing a sample to be analysed and at least one reagent appropriate to assays to be carried out. One of the reagents consists of magnetic balls which are covered with a substance binding specifically to a substance to be detected, in suspension in a suitable liquid. The magnetic balls consist of an organic matrix enclosing a magnetic charge. The magnetic balls have a magnetizable-material-mass/non-magnetizable-material-mass ratio greater than, or equal to, 45%. Each of the means for the application of a magnetic field consists of a pair of magnets arranged face-to-face and on both sides of two consecutive test tubes. Each pair of magnets is connected to a metallic armature for channelling magnetic flux lines of the magnets so that application of the magnetic field is limited solely to the two consecutive test tubes at a time. The washing device also includes a washing head which includes the following on a means holder, namely four suction means for suction of the liquid contained in the test tubes, three washing means distribution means for distribution of a washing liquid to the test tubes, and one enzyme substrate distribution means for distribution of an enzyme substrate. The suction means and the distribution means are arranged so that the first suction means is necessarily used first when starting the assay and the last means is the distribution means of the enzyme substrate.  The washing device is fixed along a horizontal axis.
Patent CA-2044928-A1 (CA)
Title: Structural concrete brick and method of construction using same
Inventor: KUCHMA DENNIS
IPC: E04C1/00
Filed: 1991-06-18
Abstract: ABSTRACT           A prefabricated concrete brick for building construction and a method of constructing walls utilizing the said prefabricated concrete brick is disclosed and claimed herein.   The brick is a self-aligning concrete brick designed to be precision moulded but light in weight and easily installed but at the same time provide for a structual carrying wall.
Patent CA-2046604-A1 (CA)
Title: A method for breeding poultry and livestock with superior meat and skin quality, or for maintaining healthy pets
Inventor: TAKAHASHI SHIYUSHICHI
IPC: A23K1/16
Filed: 1990-12-20
Abstract: This invention concerns a method for producing fine, firm, tender and tasty (in case of skin, high in quality) meats and skins of poultry and livestock, for maintaining healthy pets by lowering excess subcutaneous and internal organ fat and for producing pets having a good complexion and hair coat.  By this invention, it becomes possible to raise poultry and livestock with superior traits such as "find texture", "firmness", "tenderness" and "tastiness" (in case of skin, "high quality"), to produce meat and skin comparable to those of wild poultry and game animals as food and/or leather products, to maintain healthy pets by lowering excess subcutaneous and internal organ fat and to product pets having a good complexion and hair coat.
Patent CA-2049909-A1 (CA)
Title: Sulfoxides of alkylthiomethylphenols
Inventor: MEIER HANS-RUDOLF
IPC: C10N30/08
Filed: 1991-08-26
Abstract: Sulfoxides of alkylthiomethylphenols Abstract of the disclosure: Sulfoxides of alkylthiomethylphenols of the formula I       in which R1 is hydrogen, C1-C20alkyl, C2-C18alkenyl, C5-C7cycloalkyl, C5-C7cyclo-alkenyl, phenyl or C7-C9phenylalkyl, R2 is hydrogen, C1-C20alkyl, C2-C18alkenyl,C5-C7cycloalkyl, C5-C7cycloalkenyl, phenyl, C7-C9phenylalkyl or a radical -CH2-SO-R5, in which R5 is C8-C20alkyl which may be interrupted by -O-, -S- or-SO- groups, mono- or dihydroxy-substituted C2-C12 alkyl, phenyl, benzyl, -(CH2)nCOOR6 or -CH(CH3)COOR6, in which R6 is C1-C20alkyl and n is 1 or 2, R3 is hydrogen or a group -CH2-SO-R5, in which R5 is as defined above, and R4 has the same meanings as R2, with the proviso that only one of the radicals R2, R3 or R4 is the group -CH2-SO-R5 and that, if R4 is-CH2-SO-R5 and R1 and R2 are simultaneously tert-butyl or tert-amyl, R5 is not C8-C14alkyl, or mixtures of these compounds with the corresponding non-oxidised compounds are suitable for stabilising organic materials which are sensitive to oxidative, thermal and/or light-induced degradation.
Patent CA-2053675-A1 (CA)
Title: Braille and tactile reproduction-(new material; process and method of application of same)
Inventor: SOKYRKA HAROLD W
IPC: B41J3/32
Filed: 1991-10-17
Abstract: OTTAWA ONTARIO                       PATENT APPLICATION         ABSTRACT:       A MATERIAL & PROCESS OF APPLICATION OF SAID MATERIAL FOR THE PRODUCTION & REPRODUCTION OF BRAILLE AND TACTILE IMAGES, FOR THE BENEFIT OF THE BLIND, VISUALLY IMPAIRED, LEARNED DISABLED, AND TEACHERS OF THESE INDIVIDUALS.         IN THIS INVENTION THE IMPROVED PROCESS UTILIZES A NEWLY DEVELOPED MATERIAL THAT HAS VARYING DEGREES OF CONSISTENCY & COLORS; WHICH IS DISPENSED ON TO A SUBSTRATE WITH THE AID OF COMPUTER ASSISTED ROBOTICS, TO PRODUCE BRAILLE TEXT, (DOTS) AND TACTILE IMAGES (GRAPHIC IMAGES).         THE NEW MATERIAL, ONE APPLIED, IS THEM CURED RAPIDLY USING ULTRA VIOLET RAYS, THUS CREATING A PERMANENT BOND TO THE SUBSTRATE.   THE FINISHED PRODUCT ENABLES THE USER TO BENEFIT FROM A MUCH IMPROVED TEXTURE & CLARITY OF THE BRAILLE & TACTILE IMAGES.  SINCE THE MATERIAL CURES SO RAPIDLY, THE BENEFIT ALSO EXISTS TO PRODUCE THE TEXT IN MASS PRODUCTION DUE TO THE NATURE OF THE SPEED AND ACCURACY OF THE ROBOTICS.         BY INCORPORATING FLORESCENT COLOUR PIGMENT TO THE MATERIAL; THOSE INDIVIDUALS THAT HAVE PARTIAL SIGHT & WHO ARE LEARNED DISABLED WILL BENEFIT & RESPOND MORE QUICKLY TO THE IMAGES & TEXT.
Patent CA-2054227-A1 (CA)
Title: Preparation of diphenyl ether
Inventor: BUCHANAN ROBERT A
IPC: C07C255/54
Filed: 1991-10-25
Abstract: PREPARATION OF DIPHENYL ETHER                           ABSTRACT            A process for the production of diaryl ethers which comprises heating a compound of the formula   wherein X and Y may be selected from the group consisting of H, CN, CO2H, CO2R, CHO, COR, NO2, NR3+, CF3, provided that both X and Y may not simultaneously be H, in a solvent, in the presence of an inorganic base selected from the group consisting of the alkali metal carbonates and bicarbonates, and in the presence of a catalyst selected from the group consisting of benzoic acid, substituted benzoic acids, C2 -C14 aliphatic carboxylic acids, and alkali metal salts of said acids.  A novel dinitrodiphenyl ether, a novel diaminodiphenyl ether, and polyimide resins are also disclosed.
Patent CA-2054813-A1 (CA)
Inventor: PANSTER PETER
IPC: C08G77/58
Filed: 1991-11-01
Abstract: Formed spherical polymeric complexes of metals of the 8th subgroup of the periodic system with ligands of an organosiloxane copolycondensate, optionally cross-linked by means of cross-linking agents containing Si, Ti, Zr and/or Al (statistical, block-shaped or mixed).  This copolycondensate consists of the units (see fig. I)                     (see fig. II) and wherein        (see fig.  III)     , wherein R5 stands for alkylines with C1 - C10 linked directly to P or N, respectively, cycloalkyls with C5 - C8 or (see fig. IV)            respectively  (see fig. V) The ratio between the molar number of units (II) and the molar number of the bonded metal atoms amounts to 1:1 to 1000:1, and the ratio between the units (I) and (II) preferably is 10:90 to 95:5 mole %.  The polymeric complex compounds are present macroscopically as spherical particles with diameters of 0.01 to 3.0 mm, with a BET-surface of >0 to 1000 m2/g, a specific pore volume of 0.01 to 6.5 ml/g, and a bulk density of 50 to 1000 g/l.  Several processes for preparing the substances are provided, with special secondary treatment stages, and use of the polymeric metal complexes as catalysts in organic chemistry are described.
Patent CA-2055723-A1 (CA)
Title: Second-order predistortion circuit for use with laser diode
Inventor: CHILDS RICHARD B
IPC: H01L33/00
Filed: 1991-11-18
Abstract: SECOND-ORDER PREDISTORTION CIRCUIT     FOR USE WITH LASER DIODE             ABSTRACT      A second-order predistortion circuit for linearizing a nonlinear device having a transfer function of the form F = C1I1 - C2(I1)2, where I1 is a current applied to an input of the nonlinear device,  and C1  and C2  are constants.  The nonlinear device is typically a laser diode.  The predistortion circuit includes a field effect transistor biased for square law operation.   An Input voltage is applied between the gate and source electrodes of the field effect transistor.  An amplifier is connected between the drain electrode of the field effect transistor and the input of the nonlinear device.  The gain of the amplifier is selected to minimize second-order distortion in the output of the nonlinear device as a function of the input voltage to the field effect transistor.