baber/WOPTO huggingface dataset:
Patent CA-2000367-A1 (CA)
Title: Single input to differential output amplifier
Inventor: FERRER ENRIQUE
IPC: H03F3/30
Filed: 1989-10-10
Abstract: Abstract of the Disclosure A single input, differential output amplifier (50) includes two Gallium Arsenide field effect transistors: one arranged to form a common gate amplifier (55) to provide a non-inverting output (60), and the other arranged to form a common source (65) amplifier to provide an inverting output (61). The input of each FET is connected to receive an input signal simultaneously thereby minimizing phase delay in the differential output signals. In another aspect of the invention, the non-inverting stage (55) is incorporated into the biasing network for the inverting amplifier (65).
Patent CA-2001081-A1 (CA)
Inventor: RUTHERFORD DAVID B
IPC: B61L3/00
Filed: 1989-10-20
Abstract: A vital microprocessor-based rate decoder for use in a vital processing system in on-board main line railroad and rapid transit automatic train protection systems; the design is such that a method is incorporated for tolerating specific kinds of signal disruption and in such a way that the probability of a wrongside failure has a calculable upper bound. A pickup coil transmits external or wayside signals to an arrangement which involves two channels and which provides period and duty cycle measurement of the pulses resulting from demodulation of the external signals. A counter is employed in each of the channels and a tolerance accumulation rate decoding device is included, the maximum amount of tolerance accumulated, and the minimum time required to accumulate it, being functions of the rate code selected.
Patent CA-2001543-A1 (CA)
Title: Flap wheel assembly
Inventor: HUPPERT JAMES C
IPC: B24D13/06
Filed: 1989-10-26
Abstract: Abstract of the Disclosure A hub for a flap wheel assembly adapted to finish an arcuate convex surface.  The hub has a central cross section around its axis with a circular periphery of a first diameter, opposite circular end cross sections axially spaced on opposite sides of the central cross section and having circular peripheries of second diameters substantially larger than the diameter of the central cross section, and a peripheral surface comprising a multiplicity of generally straight elongate surface segments extending between the peripheries of the end cross sections across and contacting the periphery of the central cross section with each segment crossing at a different radius of the central cross section from the axis of the hub and being disposed at the same angle with respect to the axis measured about the radius crossed by the surface segment.  A plurality of slots along and generally parallel to the segments each are adapted for holding a straight edge portion of a generally rectangular flap member with the width of the flap member projecting outwardly of the hub.
Patent CA-2002903-A1 (CA)
Title: Raised image plate construction and method
Inventor: PRITTIE ALLAN R
IPC: B41M1/02
Filed: 1989-11-14
Abstract: In a raised-image printing process, a plate construction includes a plate portion (11, 31, 50, 56) with an upper printing surface (18, 34) for printing an image on a substrate, the image including areas of greater ink coverage (16) and areas of lesser ink coverage (20). Regions of greater and lesser stiffness are incorporated in the construction such that greater contact pressure is applied under image areas of greater ink coverage (16), and lesser contact pressure is applied under areas of lesser ink coverage (20).
Patent CA-2003471-A1 (CA)
Title: Feed waveguide for an array antenna
IPC: H01Q21/06
Filed: 1989-11-21
Abstract: A improved feed waveguide 15 for an antenna 10 is disclosed which reduces coupling junction phase errors. The improved feed waveguide 15 of the present invention includes first and second slotted parallel walls 35 and 37 along the length thereof.  The first wall 35 includes a first elongate slot 27 therethrough having a first longitudinal axis 44.  The second wall 37 includes a second elongate slot 32 which is  located on the second wall 37 opposite the first slot 27 on the first wall 35. The second slot 32 has a longitudinal axis 42 which is orthogonal to the longitudinal axis 44 of the first slot 27.
Patent CA-2004666-A1 (CA)
Title: Recording material
Inventor: KLUG GUNTER
IPC: B41M5/155
Filed: 1989-12-05
Abstract: Recording material Abstract Pressure-sensitive reactive recording material containing a)   as  the  colour-forming  agent,  a  tetraindolyl-heptamethine ether or alcohol of the formulae I/1, I/2, I/3 or I/4                                    I/2                                I/4 Le A 26 425 - Foreign countries b)   and, as the colour developer, the salt of a poly-valent metal and an aromatic carboxylic acid having at least 10 carbon atoms, of the formula (II)            (II) wherein A, B, D and E denote   and the other radicals have the meanings given in the description, produces light-stable copies which can also be read by machines (OCR).     Le A 26 425
Patent CA-2011033-A1 (CA)
Inventor: SEKI FUMIO
IPC: A41H37/10
Filed: 1990-02-27
Abstract: Button Feeder for Button Applicator ABSTRACT OF THE DISCLOSURE   A feed path for transporting a button body with the front face of a buttonhead facing upward is disposed between a trough, which is formed longitudinally on the underside of an upper member and has a receiving surface on its one side receiving a part of the periphery of the buttonhead, and a pressuring surface of a lower member, which faces the receiving surface and is urged resiliently upward. According to a preferable embodiment, the pressuring surface is inclined relatively downward and away from the periphery of the rear face of the buttonhead and has a recess on its side to allow a tongue to rotate. While the button body is pushed by the pusher along the feed path, a part of the periphery of the buttonhead is pressed by the pressuring surface. Accordingly, friction force is increased there to facilitate that the button body can be transported while it rotates about its axis. In this case, the tongue is also transported while it rotates in the recess freely without interference of an edge of the pressuring surface.
Patent CA-2011893-A1 (CA)
Title: Pharmaceutical product for the treatment of immunoregulatory disorders
Inventor: JONKER MARGREET
IPC: C12P21/08
Filed: 1990-03-09
Abstract: Pharmaceutical Product for the Treatment of Immunoregulatory Disorders Abstract of the Disclosure A pharmaceutical product comprises an antibody to tumour necrosis factor and an antibody to interferon-.gamma. as a combined preparation for simultaneous separate or sequential use.  The product is particularly suitable for treating immunoregulatory disorder such as organ transplant rejection or graft rejection.  While antibody to tumour necrosis factor or antibody to interferon-.gamma. alone have little or no effect on rejection, the combination of antibodies produces a surprising prolongation of graft or transplant survival.
Patent CA-2017780-A1 (CA)
Inventor: MIHAITA ION
IPC: F41G1/08
Filed: 1990-05-29
Abstract: A fire arm includes a body and a handle carried thereby as well as first and second barrels secured to the body.  The second barrel is secured below the first barrel. A first loading mechanism is located in the body for loading the first barrel and a second loading mechanism is located in the body for loading the second barrel.  A first magazine is selectively secured to the body for supplying the first loading mechanism and a second magazine is selectively secured to the body for supplying the second loading mechanism.  The second magazine is spaced from the first magazine.  A firing mechanism, which is located in the body allows a sequential firing of the first and second barrels.
Patent CA-2020454-A1 (CA)
Title: Durable infrared target having fast response time
Inventor: BATES KENN S
IPC: F41J2/02
Filed: 1990-07-04
Abstract: DURABLE INFRARED TARGET HAVING FAST RESPONSE TIME               ABSTRACT OF THE DISCLOSURE     A fast infrared target is disclosed, which provides for conversion of near IR to far IR, far IR to near IR, IR to visible,  and  visible  to  IR radiation.   The  target includes  a  layer  of  low thermal  conductivity material applied to a thermally conductive layer.  The low thermal conductivity material may be Gold-black, Welsbach or other material.  The thermally conductive layer may be a metal. The fast IR target provides the advantages of permitting fast refresh of information emitted by the target and of providing an  IR target which  is durable,  and able  to withstand  high  powers  of  absorbed  radiation  and  high ambient temperatures.
Patent CA-2021203-A1 (CA)
IPC: E21D9/06
Filed: 1990-07-13
Abstract: A direction correcting device for a shield tunnelling machine having a shield body (12) provided with a head portion (14) and a tail portion (16) following the head portion is adapted to correct the direction of the head portion relative to the tail portion. The device comprises three jacks (38,40,42) respectively having two connecting portions relatively displaced in the axial direction of the tail portion, and a connecting body (36) for interconnecting the head portion and the tail portion so as to permit the head portion and the tail portion to swing, while preventing the head portion and the tail portion from relatively displacing in the axial direction of the tail portion. Each of the jacks is connected at one connecting portion to the head portion, while being connected at the other connecting portion to the tail portion, and the jacks and the connecting body are disposed around the axis of the tail portion at angular intervals.
Patent CA-2027801-A1 (CA)
Inventor: KAWAI HIROAKI
IPC: F23G5/027
Filed: 1990-10-17
Abstract: A method of stopping combustion in a restrained combustion furnace in which wastes to be incinerated is gasified and then burnt with an air amount lower than a theoretical combustion air amount, in case of emergency, the method comprises steps of shutting off a combustion air supply line connected to the restrained combustion furnace, simultaneously feeding inert gas to lower portions and an outlet side of the furnace, and opening a bypass line connected to an upper portion of the furnace to flow gas in the furnace through a filter to a waste gas stack, thereby stopping the combustion in the restrained combustion furnace in safety in case of emergency.
Patent CA-2029887-A1 (CA)
Title: Process for manufacturing pelletized materials for use in chemical reactions in industry or agriculture
Inventor: BOGUSLAWSKI ZBIGNIEW
IPC: C05D3/02
Filed: 1990-03-21
Abstract: ABSTRACT          The present invention concerns pelletized materials for use in chemical conversion processes in industry or agriculture, in which alkaline compounds in powder form are pelletized with hydroxides of substances having highly different solubility products in a manner such that initially in a first stage with the addition of small quantity of pelletizing water nuclei of a size of 0.05 to 0.15 mm are formed and that subsequently the nuclei formed are combined into pellets by the addition of more pelletizing water, and a process for their preparation.  To the initial material in the first stage a quantity of pelletizing water sufficient for hydrating, but not substantially exceeding said quantity, is added and following the onset of nucleation the further addition of water is interrupted until the initial materials are completely hydrated.  The pelleting water required for the continuation of nucleation is added only after said hydration. For the preparation of pellets for the elimination of nitrogen impurities and in connection with it of phosphorus impurities and possibly heavy metals, hydrogen-phosphate salts of phosphates of a cation of the second principal and secondary groups of the periodic system are used as the initial active substances.
Patent CA-2029922-A1 (CA)
Inventor: SHAW RONALD D
IPC: E04F15/14
Filed: 1990-11-14
Abstract: Slip and non-slip dowel placement sleeves are disclosed. The slip dowel placement sleeve generally comprises a tubular dowel receiving sheath having a closed distal end and an open proximal end. A connecting means of perpendicular flange is formed around the proximal opening of the sheath to facilitate attachment of the sheath to a concrete form. Smooth sections of dowel rod may then be advanced through holes drilled in the concrete form and into the interior compartment of the sheath.      Concrete is poured within the form and the dowel rod remains slidably disposed within the interior of the sheath. Variations of the basic slip dowel placement sleeve of the invention includes a tapered "extractable" sleeve and a corrugated "grout tube" for placement of non-slip dowel or rebar.
Patent CA-2031773-A1 (CA)
Title: Tamper proof system for disposable liquid reservoir and cooperating accurate metering system
Inventor: SMITH TIMOTHY J N
IPC: A61M5/148
Filed: 1990-12-07
Abstract: ABSTRACT   A portable liquid reservoir and delivery assembly particularly suited to ambulatory patients in which liquid under pressure from an expansible container is metered through a valve system under electronic control which includes valve means for filling and emptying a dosage chamber for metering the liquid.  The reservoir can be filled initially through an elastic septum, which is protected by a tamper proof cap, which prevents re-use of the reservoir, and which ensures that delivery of medicament can only take place if the cap is properly Installed.  A sensor for the dosage chamber allows accurate delivery of liquid, regardless of minor variations in assembled location between the reservoir/valve pack and the electronics control unit.  A priming key for the system which overrides the inherent safety features to allow initial flow and elimination of air from the system is also described.
Patent CA-2032134-A1 (CA)
Title: Cutting device with at least two cutting elements
Inventor: SCHIEFELE GEORG
IPC: B28B11/12
Filed: 1990-04-05
Abstract: The cutting device has two cutter components. It is  especially suitable for split plain tiles. The cutter carriers (25) may be pivoted into their inoperative and operative positions. Each cutter (25) is connected to a spindle (29, 30), the spindles being arranged coaxially (40) one within the other. Thus the cutter carriers pivot about the same axis (40) at the same time in the manner of scissors. The cutter carriers (25) are forked and the cutters (26) are in the form of wires and interchangeable. This cutting device is permanently installed on the extruding press belt. It is nevertheless easy to regulate, can be monitored and operates reliably.
Patent CA-2033174-A1 (CA)
Inventor: SAKATA KOJI
IPC: C08J7/00
Filed: 1990-05-21
Abstract: Disclosed herein is a sulfo-group-containing heat-resistant high-molecular material containing sulfo groups in an amount of not less than 1 wt.$ in terms of sulfur content and having an ammonia adsorptivity of not less than 10 mg/g, formed by heat-treating at a temperature of 250 - 500°C a starting composition composed mainly of a sulfo-group-containing aromatic high-molecular compound which comprises unit constituents of an aromatic sulfonic acid compound or a salt thereof and is soluble in aqueous solvents, and a preparation process thereof.
Patent CA-2033708-A1 (CA)
Title: Environmental protection method for reducing pollution of substrate surfaces
Inventor: HINSPERGER PETER
IPC: A01G13/02
Filed: 1991-01-07
Abstract: The invention discloses a protective method suitable for reducing the environmental impact of treatments in an area such as turf areas by applying a protective layer of a flexible material to the area to be protected. The protective layer is a length of thermoplastic sheet material free from apparent apertures when in a lay-flat condition but which has slits formed in the material to permit the passage of moisture such as would be encountered in a rainfall; the material is of a type which permits the passage of sunlight through to the protected area to permit it to grow.
Patent CA-2035085-A1 (CA)
Title: Process for producing titanium dioxide
Inventor: WATANABE MORIO
IPC: C01G23/053
Filed: 1991-01-28
Abstract: ABSTRACT           The invention is concerned with a process for producing titanium dioxide which discharges no waste. In a first step of the process according to the invention, a sulfuric acid solution containing titanium ion together with one or more kinds of metal ions is brought into contact with a first organic solvent to extract the titanium ion as a sulfuric acid complex from the sulfuric acid solution, and the organic solvent contain-ing the extracted titanium in a form of a sulfuric acid complex (titanyl sulfate) is brought into contact with an aqueous liquid to strip the titanium in a form of sulfuric acid complex into the aqueous liquid and to regenerate the first organic solvent for recycling for extraction. In a second step, the aqueous liquid contain-ing the titanium in a form of sulfuric acid complex stripped from the organic solvent is subjected to a hydrolysis to form insoluble titanium hydroxide, and the titanium hydroxide is washed with dilute sulfuric acid and or clear water. In a third step, a part or whole of raffinate of extraction in the first step is brought into contact with a second organic solvent to extract the titanium ion as a sulfuric acid complex from the raffinate, and the organic solvent containing extracted titanium in a form of sulfuric acid complex is brought into contact with water, dilute sulfuric acid solution or a dilute titanyl sulfate solution to strip the tita-nium in a form of sulfuric acid complex to regenerate the organic solvent for recycling to extraction.
Patent CA-2036268-A1 (CA)
Title: Polymeric compounds
Inventor: POTTS RODNEY M
IPC: C08F8/34
Filed: 1991-02-13
Abstract: ABSTRACT POLYMERIC COMPOUNDS A polymeric compound is derived from a polyhydric material and has pendant sulphonate groups of the general formula   and pendant alkyl urethane groups of the formula   where X is an aliphatic, aromatic, carboxylic or heterocyclic group; Y is hydrogen, halogen or an alkyl, aryl, alkoxy, aryloxy or aralkyl group, CO2-Z+, CO2R or SO3-Z+; Z+ is a cationic counter ion and R is hydrogen alkyl, alkylene, aryl or aralkyl group.
Patent CA-2037841-A1 (CA)
Inventor: CAILLE GERARD
IPC: H01Q21/24
Filed: 1991-03-08
Abstract: Le  système  d'antenne  imprimée  active  à  haut rendement pour  radar  spatial  agile  comprend  plusieurs milliers de circuits intégrés hyperfréquences de type MMIC identiques émettant tous et toujours la même puissance.  La présente invention peut être adaptée notamment aux radars spatiaux.
Patent CA-2039781-A1 (CA)
Inventor: WILBER JAMES A
IPC: H04N3/16
Filed: 1991-04-04
Abstract: In a deflection system, a passive network is coupled to a source of flyback pulses for generating from energy in the flyback pulses a horizontal rate drive signal substantially independent of amplitude variations in the flyback pulses and having a substantially constant DC voltage reference level. An amplifier is coupled for receiving the horizontal rate drive signal as an input and has an output control signal for driving a deflection coil. The control signal has a DC voltage reference level corresponding to the DC reference level of the horizontal rate drive signal. A feedback stage for a signal related to deflection current is coupled between the coil and an input of the amplifier. A waveform generator develops a vertical rate waveform which is coupled to the amplifier as an input, for pulse width modulating the control signal. The deflection system may be, for example, a switched mode vertical deflection system or a switched mode pincushion correction system. In a switched mode vertical deflection system, the horizontal rate drive signal and the vertical rate waveform are ramp signals and the flyback pulses are horizontal flyback pulses. The passive network is DC coupled between the source of flyback pulses and the amplifier. The passive network comprises a Zener diode, a capacitor and a resistor connected in parallel.
Patent CA-2045196-A1 (CA)
Title: Fluorine-free phosphate glasses
Inventor: AITKEN BRUCE G
IPC: C03C3/17
Filed: 1991-06-21
Abstract: Abstract of the Disclosure This invention is drawn particularly to the production of glasses having essentially fluorine-free compositions consisting essentially, in mole percent, of:      Li2O          5-10   P2O5                   30-36 Na2O          5-15   Al2O3                   0-5 K2O         0-6    CeO2                    0-2 Li2O+Na2O+K2O     15-25    SnO              0-20 ZnO          10-33    PbO                    0-20 CaO        0-20  Sb2O3                    0-12 SrO           0-20  Bi2O3         0-6 BaO           0-20  SnO+PbO+Sb2O3+Bi2O3      0-20. CaO+SrO+BaO  12-25
Patent CA-2048713-A1 (CA)
Title: Pesticides
Inventor: KRISTIANSEN ODD
IPC: A01N43/54
Filed: 1991-08-08
Abstract: Pesticides Abstract Compounds of formula I               (I) wherein: R1 is hydrogen; C1-C5alkyl that is unsubstituted or substituted by halogen or byC1-C3alkoxy or by S(O)p-C1-C3alkyl; C2-C7alkenyl that is unsubstituted or substituted by halogen; C3-C7cycloalkyl; halogen; or C2-C4alkynyl; R2 is hydrogen; hydroxy; C1-C5alkyl that is unsubstituted or substituted by halogen or by C1-C3alkoxy; C1-C5alkoxy; S(O)p-C1-C4alkyl; halogen; nitro; cyano; amino; NHR3; N(R3)R9; or N=C(R9)R10; R3 is hydrogen; C1-C5alkyl; benzyl; -CO-R6; or -S-R7; R4 and R8 are each independently of the other hydrogen; C1-C5alkyl that is unsubstituted or substituted by halogen or by C1-C3alkoxy; or C3-C7cycloalkyl; R5 is halogen; C1-C3alkyl; C1-C3alkoxy; C2-C6alkoxyalkyl; C1-C3haloalkyl; C1-C3alkylthio; C1-C3haloalkoxy; C1-C3haloalkylthio; CN; NO2; or an -X-phenyl group that occurs once at the naphthyl ring and that is unsubstituted or mono- to tri-substituted by identical or different substituents selected from halogen, C1-C3alkyl and C1-C3alkoxy; R6 is C1-C5alkyl; or phenyl that is unsubstituted or substituted by halogen and/or by C1-C3alkyl; R7 is phenyl or benzyl each of which is unsubstituted or mono- or di-substituted in the ring by identical or different substituents selected from halogen, nitro and cyano; or C1-C5alkyl that is unsubstituted or substituted by halogen or by cyano; R9 is C1-C5alkyl;     R10 is hydrogen or C1-C5alkyl; R13 is hydrogen; C1-C4alkyl that is unsubstituted or substituted by halogen or by C1-C3alkoxy; cyclopropyl; halogen; C1-C3alkoxy; C1-C3alkylthio; or -N(C1-C3alkyl)2; X is oxygen or sulfur; m is 1,2 or 3; n is 0, 1,2 or 3; and p is 0, 1 or 2.   The novel compounds have valuable biocidal properties. They can be used in crop protection for protecting cultivated plants against attack by pests, and for controlling those pests.
Patent CA-2051355-A1 (CA)
Title: Range taking service entrance connector
Inventor: SACKS NORMAN
IPC: H01R4/34
Filed: 1991-09-13
Abstract: ABSTRACT      A service connector includes unitary extruded connector having a crown portion and depending cooperating spring elements for forming a connection in which the conductor groove provides resilient contact pressure between connector elements.
Patent CA-2051413-A1 (CA)
Inventor: BRUYLANTS PETER P
IPC: C08F230/08
Filed: 1990-04-06
Abstract: A curable silane resin, and a process for making same, having at least one of two units selected from the group consisting of a prepolymer (C) and a prepolymer (F): the prepolymer (C) having formula (1): and the prepolymer (F) having formula (III). The curable resin of our invention has excellent flexibility, solvent resistance and adhesion to organic materials. Furthermore, our process for preparing the resin is simpler, more easily reproducible, and results in less unwanted by-products than earlier processes for preparing similar silane resins.
Patent CA-2053951-A1 (CA)
Inventor: PHAM VAN D
IPC: H01H33/16
Filed: 1991-10-22
Abstract: Dielectric gas high-voltage circuit-breaker characterised in that it comprises a condenser (45A) arranged inside the cutoff chamber, possibly with a varistor in parallel, these elements being associated with a mechanism (37, 23) permitting their insertion during an opening and closing manoeuvre of the circuit-breaker. 
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