baber/WOPTO huggingface dataset:
Patent CA-2002428-A1 (CA)
Inventor: TAKATA HARRY H
IPC: B05B7/14
Filed: 1989-11-07
Abstract: VENTURI SYSTEM FOR AGRICULTURAL SPREADERS OF SOLID PARTICLES          ABSTRACT OF THE DISCLOSURE        An improved  system for  pneumatic  spreader  systems  for distribution of particulate material upon agricultural fields, and wherein the  spreader system  employs a number of elongated hollow delivery or discharge booms.  The IMPROVED feature of  the present invention comprises  a venturi which is mounted within each of the booms, with the Venturi being positioned immediately  adjacent and upstream from  the point  at which particulate materials are being fed into the boom. The  Venturi includes  a throat  portion which extends along  and across  a chordal  line of  the hollow delivery boom, and in addition includes a blade means which is in generally opposed  relationship  to  the  Venturi  throat.    The  blade  is angularly   positioned   within  the   boom,  and   in  converging relationship with  the distal  tip of  the boom and is arranged to define a substantially rectangular opening between the tip  of the blade means and the top surface of the Venturi throat.
Patent CA-2006020-A1 (CA)
Title: Production of phosphorothioate salts
Inventor: JAMES BARRIE D
IPC: C07F9/177
Filed: 1989-12-19
Abstract: PRODUCTION OF PHOSPHOROTHIOATE SALTS                 ABSTRACT OF THE DISCLOSURE     Amine salts of phosphorothioic acids, useful for example in lubricant compositions, are made by forming a mixture of sulphur and an amine, and then adding a phos-phite ester.  The reaction is controlled by the rate of addition of the ester.
Patent CA-2008617-A1 (CA)
IPC: D04H1/64
Filed: 1990-01-25
Abstract: A two stage polymerization process for preparing a vinyl acetate emulsion copolymer containing a monomer which is normally incompatible with vinyl acetate.  In the first stage the vinyl acetate, desirably ethylene and, optionally, an active crosslinking comonomer and/or latent crosslinking comonomer are free radical polymerized in the presence of a stabilizing system to yield a first stage polymer emulsion.  When the free vinyl acetate monomer content of the first stage emulsion is less than about 5%, the second stage polymerization begins by adding the incom-patible monomer.  Preferably, there is no cessation of the addition of the free radical source during the transition from the first stage to the second stage polymerization.  No additional stabilizing system is added to the reaction in the second stage.     Vinyl acetate/ethylene/incompatible comonomer/latent crosslinking comonomer copolymers prepared by the two stage polymerization process are suitably used as binders for making nonwoven products.
Patent CA-2009600-A1 (CA)
Inventor: NIED HERMAN F
IPC: F28F21/04
Filed: 1990-02-08
Abstract: RD 17,386 METAL-CERAMIC STRUCTURE WITH INTERMEDIATE          HIGH TEMPERATURE REACTION BARRIER LAYER                         ABSTRACT    A Si - SiC ceramic layer is bonded to a non-porous SiC substrate with the Si etched from the layer to form a relatively porous surface on the otherwise non-porous high strength SiC substrate.  A quartz layer is softened by heating and forced into the pores of the porous layer to form a mechanical bond to the SiC substrate.  A refractory metal layer is bonded to the quartz layer to complete the joint.  A refractory metal support component is then bonded to the refractory layer whereby the quartz serves as a high strength, high temperature reaction barrier between the metal of the refractory layer and the silicon of the SiC substrate.
Patent CA-2010169-A1 (CA)
Inventor: UEKITA MASAKAZU
IPC: G03F7/09
Filed: 1990-02-15
Abstract: Abstract of the Disclosure A multi-layer resist comprising (A) a layer of a Langmuir-Blodgett film, (B) a layer of at least one thin film and (C) a substrate, said layer (B) being placed between said layer (A) and said substrate (C). The multi-layer resists of the invention are applicable to ultra fine processing on the order of submicron, half-micron or quater-micron, and the number of defects can be remarkably decreased.
Patent CA-2010673-A1 (CA)
Title: Current chopping strategy for switched reluctance machines
Inventor: MACMINN STEPHEN R
IPC: H02P6/06
Filed: 1990-02-22
Abstract: A method and apparatus are provided for controlling the switching devices in a switched reluctance machine bridge inverter having at least two switching devices per phase. One switching device is used for hysteresis band current chopping to regulate phase current magnitude, while the other switching device, in combination with a flyback diode, provides a circulating path for phase current. Alternatively, current chopping and circulating are alternated between both switching devices during each conduction interval of the corresponding machine phase. Ripple current is decreased, thereby reducing the required size of the DC link capacitor.  Switching losses are also reduced.
Patent CA-2012115-A1 (CA)
Title: Iodinated somatostatins
Inventor: ECK CHARLES R
IPC: A61P25/28
Filed: 1990-03-14
Abstract: An octapeptide of the formula:    wherein each A1 and A2, independently, is H, C1-12 alkyl, C7-10 phenylalkyl, R1CO (where R1 is C1-20 alkyl, C3-20 alkenyl, C3-20 alkynyl, phenyl, naphthyl, or C7-10 phenylalkyl), or R2OCO (where R2 is C1-10 alkyl or C7-10 phenylalkyl), provided that when one of A1 or A2 is R1CO or R2OCO, the other must be H; A3 is CH2-A6 (where A6 is pentafluorophenyl, naphthyl, pyridyl, phenyl, or o-, m-, or, more preferably, p-substituted phenyl, where the substituent is a halogen, NH2, NO2, OH, or C1-3 alkyl); (I) indicates that tyrosine is iodinated on the phenyl ring at its 3 or 5 carbon positions; A5 is Thr, Ser, Phe, Val, .alpha.-aminobutyric acid, or Ile, provided that when A3 is phenyl, A1 is H, and A2 is H, A5 cannot be Val; and A7 is Thr, Trp, or .beta.-Nal; or a pharmaceutically acceptable salt thereof.
Patent CA-2012858-A1 (CA)
Title: Method of producing corrugated fiberboard article
Inventor: SAKURABASHI RYOETSU
IPC: B60R13/02
Filed: 1990-03-22
Abstract: A corrugated fiberboard article having no wrinkles in the surface thereof is produced by previously forming slits or/and notches in at least one linerboard of corrugated fiberboard at predetermined positions, temporarily tacking the linerboard to the rest of the corrugated fiberboard with a fusible adhesive interposed therebetween, temporarily tacking an auxiliary sheet to the linerboard with a fusible adhesive interposed therebetween to form a corrugated fiberboard blank.  The auxiliary sheet has an integral structure including covering portions which cover the slits or notches and cut portions each defined between each pair of adjacent covering portions.  The corrugated fiberboard blank is formed by a forming die under heating.
Patent CA-2013500-A1 (CA)
Inventor: KAMINS KATHRYN A
IPC: C08L9/00
Filed: 1990-03-30
Abstract: TITLE THERMOPLASTIC BLENDS CONTAINING ETHYLENE TERPOLYMERS AND THE PREPARATION THEREOF        ABSTRACT OF THE DISCLOSURE                        Terpolymers of various amounts of polymer repeat units of ethylene, acrylate ester, and carbon monoxide are intimately admixed with acrylonitrile/butadiene/styrene (ABS) resin to form a blend with a flex modulus of at least 1700 MPa.  The resulting blend has enhanced impact strength properties over the resin alone.  Such blends are useful as molding resins.  The process for preparation of the blend involves admixing the terpolymer with the ABS resin.
Patent CA-2013939-A1 (CA)
Title: Base for roadway marker and method for making same
Inventor: MONTALBANO ANTHONY J
IPC: E01F9/06
Filed: 1990-04-05
Abstract: BASE FOR ROADWAY MARKER AND METHOD FOR MAKING SAME               ABSTRACT OF THE DISCLOSURE   A pavement marker base is provided having a generally planar bottom support surface with an array of downwardly facing open chambers molded therein.  Deformations are formed on the bottom surfaces of at least some of the walls dividing the chambers, and also preferably in the peripheral support surface of the marker base to provide additional downwardly facing surface area to mate with an adhesive material used to adhere the marker base to a roadway surface.  These deformations may be characterized by a variety of surface shapes, such as arcs, rectangular notches, and dovetails.  In the preferred embodiment, chamber walls include outwardly directed lips to engage the adhesive material.  In another embodiment of the invention, a wire mesh covers at least some of the bottom surface of the marker base, and is imbedded within the bottom surface of the chamber walls and peripheral support surface.  The mesh engages with the adhesive to provide a strong means of anchorage.
Patent CA-2014438-A1 (CA)
Title: High energy and high power lithium storage batteries, and method for producing same
Inventor: PISTOIA GIANFRANCO
IPC: H01M10/058
Filed: 1990-04-11
Abstract: HIGH ENERGY AND HIGH POWER LITHIUM STORAGE BATTERIES, AND METHOD FOR PRODUCING THE SAME                               ABSTRACT      High energy and high power lithium storage batteries,  com-prising and anode of lithium or lithium alloy, a non-aqueous elec-trolytic solution containing a lithium salt in one or more organic solvents or a solid electrolyte consisting of a lithium salt/polymeric material complex, and a cathode based on a lithium-vanadium oxide of nominal  stoichiometric  formula  LiV3O8,  which  is  obtained  in  the amorphous form by means of a new process of synthesis  in aqueous solution. The choice of the amorphous form for the cathode material provides better performance with respect to the corresponding material in the crystalline form.
Patent CA-2014715-A1 (CA)
Title: Bias tire for aircraft
Inventor: OOTANI TAKAO
IPC: B60C19/00
Filed: 1990-04-17
Abstract: ABSTRACT     A bias tire for aircraft has a carcass composed of a plurality of carcass ply groups and a cap ply layer. Each of the carcass ply groups comprises at least one carcass ply extending from a tread through a side-wall part to the bottom surface of a bead core. The carcass ply groups are distinguished by the folding direction of the carcass plies at the bead core, or the bead cores at which the carcass plies are folding in the case that plural bead cores are employed. The cap ply layer is disposed inward the tread part and between the carcass ply groups, of which outer both end are terminated outward in the radial direction of the bead core.
Patent CA-2015255-A1 (CA)
Inventor: LANGDON ALBERT K
IPC: F16B2/08
Filed: 1990-04-24
Abstract: ELECTRIC METER SOCKET SEALING RING                     ABSTRACT OF THE DISCLOSURE         A sealing ring for an electric meter socket has first and second spaced ends.   A tongue with R plurality of linearly spaced apertures extends linearly outward from the first end of the sealing ring.   A housing is counted on the second end of the sealing ring and includes  a passage for receiving the tongue therethrough.  A threaded fastener is mounted in the housing and engages successive apertures in the tongue to advance and retract the tongue through the housing to connect  and disconnect  the sealing ring about the electric meter socket.   At least one and preferably two seal tabs extend outward from the second end of the band and engage the apertures in the tongue.   A seal member is emplaceable through the seal tabs to indicate a sealed mounting on the sealing ring on the electric meter socket.
Patent CA-2016735-A1 (CA)
Title: Reduced banding in bidirectional ink jet printing
Inventor: HOISINGTON PAUL A
IPC: B41J2/01
Filed: 1990-05-14
Abstract: Reduced Banding in Bidirectional Ink Jet Printing Abstract In the particular embodiments of the invention described in the specification, the banding effect resulting from bidirectional printing in an ink jet printer is eliminated by interlacing the lines (26,27) produced by the ink jet head (23) during motions in opposite directions so that the combination of the spacing between adjacent lines and the edge raggedness (32) or color contrast of the lines is less than the lower limit required for visual detection of banding. (Fig. 4)
Patent CA-2020858-A1 (CA)
Inventor: KATAYAMA SAKAE
IPC: F22D11/00
Filed: 1990-07-10
Abstract: A water treatment agent for boilers which comprises .as active ingredients a compound which can release aliphatic hydroxycarboxylic acid ions in water and a.polyamine represented by the following formula (I) or an acid addition product thereof:      H2N(CH2CH2NH)n H ... ... (I) (wherein n denotes an integer of 2 to 5), and a water treatment method for pure water boilers or soft water boilers using the above active ingredients to prevent corrosion of the ferrous metal in the water system of the pure water boilers or soft water boilers.
Patent CA-2022215-A1 (CA)
Title: Method of handling nonexistent memory errors
Inventor: BRUCKERT WILLIAM
IPC: G06F11/34
Filed: 1990-07-30
Abstract: ABSTRACT      In a fault tolerant computer system using dual data processing systems each having dual rails and a single memory for each system, handling errors caused when the memory fails to respond during a memory operation.  When the memory fails to respond the system classifies the error as a NXM          (nonexistent momory) error.  The handling of a NXM error involves distinguishing between three situations, i.e., when the error is detected during boot time sizing of the memory, when the error is due to an invalid address generated by software, and when the error is due to a hardware error in memory.
Patent CA-2022528-A1 (CA)
Inventor: GROSZ IMRE
IPC: G01C9/28
Filed: 1990-08-02
Abstract: A snap-in vial cover for retaining a level-indicating vial on the web of a frame includes first and second vial cover members.  The vial cover members are substantially identical in construction.  A vial is adapted for placement within a pair of oppositely disposed notches formed in an opening provided in the web of the frame.  The first and second members are securable to each other for retaining the vial on the web of the frame.
Patent CA-2022841-A1 (CA)
Title: Dual capacity fluid pump
Inventor: HALEY WILLIAM J
IPC: F04C14/02
Filed: 1990-08-08
Abstract: ABSTRACT         A dual capacity pump having at least two gear pump stages with a common fluid inlet passage, each pump stage having a discharge port, the discharge port for one stage communicating with a fluid pressure load through a flow delivery passage and the discharge port for the other stage communicating with the flow delivery passage through a one-way flow valve, and speed responsive flow control valve means for connecting the discharge side of the other stage to the common fluid inlet passage during operation in a first operating range of low driving speeds for the pump and to said flow delivery passage through the one-way flow valve during operation in an operating range of high driving speeds for the pump.
Patent CA-2024281-A1 (CA)
Title: Machine-aided method for the selection of roofing systems and the generation of specifications thereof
Inventor: BLANCHARD WILLIAM K
IPC: G06F17/50
Filed: 1990-08-30
Abstract: ABSTRACT    A machine-aided method for selecting roofing systems to match particular building roof design features.   Logic branches are employed to guide a machine to the determination of an appropriate roofing system on the basis of design feature data entered by a user.  Specification generation means are also disclosed wherein a roofing specification may be generated which corresponds to the selected  roofing  system.    An  illustrative  example  is  also described.
Patent CA-2024531-A1 (CA)
Inventor: GARTLAND ROBERT J
IPC: C08L9/00
Filed: 1990-09-04
Abstract: Tires having white sidewalls are very popular in the United States and Canada. This invention discloses a process for preparing such tires having decorative appliques thereon. By practicing the process of this invention, tires having better uniformity can be built at lower costs than when standard tire building techniques are utilized. This invention specifically relates to a method of preparing a pneumatic rubber tire having a decorative design on the sidewall thereof which comprises (a) applying the decorative design to the sidewall of a cured tire and (b) binding the decorative design to the sidewall by the application of heat and pressure; wherein the decorative design is comprised of from about 25 weight percent to about 75 weight percent syndiotactic 1,2-polybutadiene or blends of SPED having melting points which are within the range of about 70°C to about 160°C and from about 25 weight percent to about 75 weight percent of at least one polydiene rubber which is blended with said syndiotactic 1,2-polybutadiene, at least one pigment or colorant, sulfur, and zinc oxide.
Patent CA-2025669-A1 (CA)
Inventor: LEBLANC JEAN-FRANCOIS
IPC: A61J11/02
Filed: 1990-02-08
Abstract: PCT No. PCT/FR90/00123 Sec. 371 Date Oct. 9, 1990 Sec. 102(e) Date Oct. 9, 1990 PCT Filed Feb. 8, 1990 PCT Pub. No. WO90/09161 PCT Pub. Date Aug. 23, 1990.The variable-flow feeder (1) of the invention is meant to be fitted in particular onto a milk bottle and comprises at the end of its nipple (2) a slit (3) with two arms (3a, 3b) subtending between them an angle, and is characterized in that the angle subtended by the two arms of the slit (3) is an obtuse angle GAMMA  between 165 DEG  and 95 DEG  of which the vertex lies on the feeder axis, in that the lengths l1 and l2 (l1>l2) of the slit arms form such a ratio l1/l2 that it falls between a value of 1 and  delta , the value of  delta  increasing from 1 to 10, preferably from 1 to 4.5, when the angle  GAMMA  decreases from 165 DEG  to 95 DEG , said arms of the slit (3) being determined by cutting lines which do not remove material and issuing at their non-adjacent ends into a hole (4b, 4c) of small cross-section.
Patent CA-2026173-A1 (CA)
Title: Container for dispensing carbonated liquids
Inventor: PARKER RODERICK M
IPC: B67D1/04
Filed: 1990-09-25
Abstract: ABSTRACT OF THE DISCLOSURE         CONTAINER FOR DISPENSING CARBONATED LIQUIDS        A container, such as a soda siphon, comprises a vessel (2) of blow-moulded plastics material, such as PET.  A valve assembly (20), similar to those commonly used with aerosol containers, is received in a neck (6) of the vessel (2).  A dispensing head (8) is fitted to the neck (6) over the valve assembly (20).  The head (8) has an actuating element (28) which fits over an outlet tube (24) of the valve assembly (20).  The actuating element (28) is hinged (at 34) to the rest of the dispensing head (8) and has a passageway (32) which communicates with an outlet nozzle (12).  Depression of the actuating element (28) causes the valve to open, and the carbonated liquid flows through the outlet tube (24), the passageway (32) and the outlet nozzle (12). The construction of the container means that its components can be made economically, so that at least the vessel (2) and the valve assembly (28) (and possibly also the dispensing head (8) may be disposable when the contents have been used.
Patent CA-2027921-A1 (CA)
Title: Bone cement composition, cured product thereof, implant material and process for the preparation of the same
Inventor: NAKABAYASHI NOBUO
IPC: A61K6/838
Filed: 1990-10-18
Abstract: Disclosed is a bone cement composition comprising polyalkyl methacrylate derived from methacrylate having an alkyl group of 1 - 4 carbon atoms, hydroxyapatite, alkyl methacrylate having an alkyl group of 1 - 4 carbon atoms, 4-(2-methacryloyloxyethyl)trimellitic acid or anhydride thereof, and a polymerization initiator. Also disclosed are a cured product of the composition, an implant material using the composition and a process for the preparation of the implant material
Patent CA-2028576-A1 (CA)
Inventor: ANDERSSON HENRY
IPC: G01S11/02
Filed: 1990-10-25
Abstract: A method for measuring the velocity (v) of a moving target (A). Radio signals are transmitted by means of radio transmitter-receiver arrangements of both the measuring station (B) and the target station (A) and received at the opposite stations (A, B), the frequencies of which signals include Doppler shifts (fd) to be observed both at the measuring station (B) and in the measuring target (A). On the basis of the Doppler shifts (fd), the escape and/or approach velocity (v) ofthe target to be measured is determined relative to the measuring station (B). Radio signals are transmitted from the measuring station (B) and the target station (A), the frequencies of which signals deviate from each other by a relatively small frequency difference (fk) or by a Doppler frequency shift (fd),the absolute value of which small frequency difference remains at least as high as the absolute value of the largest expectable Doppler frequency shift (fdmax).A difference frequency or difference frequencies (fb, fa) of the frequency including the Doppler shift (fd) and received at the measuring station (B) and the target station (A) and of the reference frequency of essentially the signal frequency range developed locally are formed in such a way that a low-frequen-cy or possibly a zero-frequency signal at the target station is obtained as the difference frequency or frequencies (fb, fa). On the basis of the difference frequencies (fb, fa), the Doppler frequency shift (fd) is determined, by means of which the velocity (v) of the target (A) is obtained.
Patent CA-2030973-A1 (CA)
Title: Wireless sensing/monitoring system
Inventor: MARCU MIHAIL I
IPC: H04B7/26
Filed: 1990-11-28
Abstract: ABSTRACT                  WIRELESS SENSING/MONITORING SYSTEM             The system contains magnets placed on containers, which energize stationary coils feeding NiCD batteries which feed sensors and radio emmiting means which send the signals to a monitoring system placed away:the cables are eliminated.
Patent CA-2031566-A1 (CA)
Title: Liquid additive metering
Inventor: MATHESON JOHN
IPC: F04B13/02
Filed: 1990-12-05
Abstract: Dosing apparatus for adding a matered quantity of liquid additive to slurry or other flowable material handled by a ram-type positive displacement main pump (10) includes a positive displacement metering pump (32) whose outlet (44) connects into a material carrying portion of the main pump e.g. its inlet (22).  The metering pump is driven by a rocking lever (48) connecting it to the main pump ram (14) through adjustment means comprising a lead screw (62) along an arm (50) of the lever for selectively shifting a slide block (68) linked to the metering pump piston rod (42); the slide block being secured against movement on the lever arm once adjustment has been effected by clamping means (74).
Patent CA-2031686-A1 (CA)
Inventor: KOBER REINER
IPC: C07D521/00
Filed: 1990-12-06
Abstract: 1-Bromo-3-chloro-1,2-diaryl-2-propanols of the general formula I    where n and m are each 1, 2 or 3, and R1 and R2 are each hydrogen, haloalkyl, alkoxy, haloalkoxy, t-butyl or an aromatic radical which may be substituted, are prepared and converted into azolylmethyloxiranes.
Patent CA-2032323-A1 (CA)
Title: Process for the preparation of 2,2-dimethylpropane-1,3-diol
Inventor: DAMBKES GEORG
IPC: C07C29/80
Filed: 1990-12-14
Abstract: A process for the preparation of 2,2-dimethylpropane-1,3-diol by an addition reaction between isobutyraldehyde and formaldehyde in the presence of tertiary amines as the catalyst, hydrogenation of the reaction mixture, and subsequent distillation. Before the distillation, formaldehyde is added to the hydrogenation product to remove unwanted basic impurities.
Patent CA-2032927-A1 (CA)
Title: Synthesis of the carbanion 1,1,2-tricyano-2-(3,4-dicyano-5-imino-2,5-dihydro-1h-pyrrol-2-ylidene) ethanide
Inventor: FLAMINI ALBERTO
IPC: C09B55/00
Filed: 1990-12-21
Abstract: SYNTHESIS  OF THE CARBANION  1,1,2-TRICYANO-2-(3,4-DICYANO-5-IMINO-2,5-DIHYDRO-IN-PYRROL-2-YLIDENE) ETHANIDE            ABSTRACT OF THE DISCLOSURE            A  process is described for preparing the carbanion of the title as its sodium salt with quantitative yields and at a high level of purity,  by a two-stage reaction between disodium-tetracyano-ethylene,  Lewis acids and water.  Metal complexes used as dyes in industrial applications are prepared fron said carbanion.