baber/WOPTO huggingface dataset:
Patent CA-2022879-A1 (CA)
Inventor: TAYLOR WILLIAM R
IPC: G10H5/12
Filed: 1990-08-08
Abstract: ELECTRONIC PIANO TONE CIRCUIT           Abstract Apparatus for generating an enveloped tone signal includes a digital portion for generating an alternating logical wave form at the desired frequency, and a start pulse for initiating the tone; and an analog portion responsive to the alternating logical wave form and the start pulse for creating the tone, the analog portion including charge storage means responsive to the start pulse for storing a charge and switching means connected to the storage means and responsive to the alternating logical wave form or repeatedly bleeding off a portion of the charge from the storage means in synchronization with the alternating logical wave form, and a transducer connected to the storage means for producing the enveloped tone signal.
Patent CA-2024283-A1 (CA)
Title: 3,4,5,6-tetrahydro-2h 1,7,4-benzodioxazonines as cardiovascular agents
Inventor: LUMMA WILLIAM C JR
IPC: C07D273/01
Filed: 1990-08-30
Abstract: 3,4,5,6-TETRAHYDRO-2H-1,7,4-BENZODIOXAZONINES AS CARDIOVASCULAR AGENTS This invention relates to novel 3,4,5,-tetrahydro-2H-1,7,4-benzodioxazonines and their pharmaceutically acceptable salts. The compounds of the invention are cardiovascular agents and especially Class III anitiarrhythmic agents.
Patent CA-2025047-A1 (CA)
Inventor: BELGIORNO CARLO
IPC: A01G9/10
Filed: 1990-09-11
Abstract: IMPROVED ROOT SEPARATING MEANS FOR PLANT CONTAINER            ABSTRACT OF THE DISCLOSURE            A root separator structure adapted for disposition in a container having peripheral walls to facilitate insertion of the root system of a plant into and removal from the container, to hold the plant stably in the container, and to enhance root growth in the container.  The structure has a shell-like body with coplanar radial arms defining compartments in the container.  The radial arms terminate in steps elevated above the plane of the arms, to contact and hold the root system of the plant in upright position.  The steps have inclined faces which help guide the root system into and out of the container. The steps can be integrally joined to the peripheral walls, or the body can be separate to be removed from the container with the plant to facilitate spreading the divided root clumps.
Patent CA-2026045-A1 (CA)
Title: Method for contact-free drying of a paper or board web
Inventor: SALMINEN SIMO
IPC: D21F5/18
Filed: 1990-09-24
Abstract: METHOD FOR CONTACT-FREE DRYING    OF A PAPER OR BOARD WEB                     ABSTRACT OF THE DISCLOSURE          A method for contact-free drying of a paper or board web (W).  In the method both infrared radiation and drying air jets are used for drying, the web (W) moving through the dryer (10, 20) being, at the same time, supported free of contact with the dryer by means of the drying air jets.  In the method the web (W) is first passed into an infrared drying gap or gaps (10VA, 10VB) and thereupon into an airborne web drying gap (20V).  In the method the infrared radiators 105 in the infrared drying unit or units (10A, 10B) are cooled by means of air flows (FAin, FBin).  In the method, before the airborne web dryer (20), an infrared dryer unit or units (10A, 10B) is/are used that are closed in such a way that cooling air is not, at least not to a substantial extent, passed into the infrared drying gap (10VA, 10VB).  The drying cooling air which has been heated in the closed air circulation in the infrared drying unit or units (10A, 10B) is conducted through the nozzles (251, 252) of the airborne web dryer (20) following after the infrared dryer to constitute drying and supporting air blowings in the drying gap (20V) in the airborne web dryer,  The thermal energy (Q) recovered in the cooling air of the infrared dryer (10) is substantially completely conducted to the airborne web dryer (20) to constitute heating energy at the side (302) of the airborne web dryer (20) which side (302) is placed at the dry side opposite to the coated wet side (P) of the web (W) to be dried.
Patent CA-2026375-A1 (CA)
Title: Light-emitting or receiving device and method for preparing the same
Inventor: KAUCHI KAKUTARO
IPC: H01L31/02
Filed: 1990-09-27
Abstract: ABSTRACT OF THE DISCLOSURE     A light-emitting or receiving device comprising a light-emitting or receiving element coated with a silicone resin composition and an encapsulating means for encapsulating said light-emitting or receiving element, said encapsulating means comprising a polymer of a monomer, an oligomer or a mixture thereof comprising a diallyl compound.  The device has improved weatherability, chemical resistance, hardness, optical properties such as transparency, and moisture resistance.
Patent CA-2026619-A1 (CA)
IPC: C07B61/00
Filed: 1990-10-01
Abstract: This invention relates to a method for producing 1,1-diarylethanes expressed by the following general formula (III):                              (III) wherein R1-R5 each stand for a hydrogen atom or an alkyl group having 1-3 carbon atoms.  This method comprises the reaction of styrenes expressed by the following general formula (I) with an alkylbenzene expressed by the following general formula (II), and is characterized in that the catalyst used is an HL type zeolite with a SiO2/Al2O3 ratio of at least 4, or a zeolite modified by exchanging said HL type zeolite with a bi- or tri-valent metal ion.                            (I)                      (II) wherein R1-R5 have the same meanings as defined above.
Patent CA-2026683-A1 (CA)
Title: Mould closing apparatus for an injection moulding machine
Inventor: HOGSETH KJELL
IPC: B22D17/26
Filed: 1990-10-02
Abstract: ABSTRACT        Mould closing apparatus for an injection moulding machine having at least one injection mould, comprises first and second injection mould halves displaceable respectively on a first fixed plate 11 and a mould carrier plate 13 which is moveable on at least two rails 14 extending between the first fixed plate 11 and a second fixed plate 12.  Displacement is effected by means of at least one long-stroke moving cylinder and piston device for rapid opening and closing of the mould halves, and a high pressure short-stroke pressure cushion device for closing the injection mould halves under high pressure.  The piston 16 of the pressure cushion device is annular with at least one recess in its inner surface. A rod 17 is fixedly connected to the moveable mould carrier plate 13 and is axially moveable in the annular piston 16.  The rod 17 carries a multiplicity of coupling members in the form of spreader flaps 26 which are pivotable into and out of the recess of the annular piston.
Patent CA-2028443-A1 (CA)
Inventor: MAH STANLEY H
IPC: D21F7/00
Filed: 1990-10-24
Abstract: A paper tail ripper having a pair of rotatably mounted knives, air motors which counter-rotate the knives, and an air jet which deflects the paper tail toward the knives.   The knives traverse closely spaced overlapping circles as they counter-rotate.   The air jet blows the paper tail onto a transfer mechanism which transfers the paper tail away from the ripper, so that the tail may be threaded through a calender stack, etc.   The ripper is pivotally mounted on the transfer mechanism for movement between storage and operating positions.  A funnel-shaped housing is positioned over the knives to guide the de-flected paper tail into a narrow feed channel centred over the knives.
Patent CA-2028762-A1 (CA)
Inventor: MATSUKI KOHICHI
IPC: H04N5/225
Filed: 1990-10-29
Abstract: The present invention comprises a switching mechanism for a video lighting apparatus operating in response to a signal generated by a video camera upon the operation of the video camera.          Thus, the lighting apparatus provides light only for the periods needed, i.e., during the actual camera operation.
Patent CA-2029039-A1 (CA)
Title: In-ground securement of pipelines and the like
Inventor: HILL MICHAEL F
IPC: F16L1/24
Filed: 1990-10-31
Abstract: ABSTRACT OF THE DISCLOSURE    Pipelines are maintained in subterranean location by a plurality of weighting devices which include an elongate central raised region enclosing the pipeline and generally planar flanges extending outwardly from the central raised region in a common plane.  Backfill overlaying the flanges provides an increased resistance to upward movement  of the buried pipeline under the influence  of  an  encompassing  fluid  medium  or  other force.
Patent CA-2029675-A1 (CA)
IPC: H04L27/227
Filed: 1990-11-09
Abstract: ABSTRACT OF THE DISCLOSURE           Supplied  with  an  input  signal  into which  a carrier signal is modulated at a frame period by a data signal   and  unique  words   periodically   interspersed throughout  the  data  signal,  a  demodulating  circuit quadrature demodulates the input signal into an output signal.   A cross-correlating circuit calculates a cross-correlation coefficient between the output signal and a locally known unique word.  A frame synchronizing circuit compares   the   cross-correlation   coefficient  with   a predetermined threshold value and delivers an aperture when the   cross-correlation   coefficient   is   below   the predetermined threshold value.  A phase calculating circuit calculates phase errors between a recovered carrier signal recovered from the output signal and a regenerated carrier signal which is a correct reproduction of the carrier signal.  The phase errors are set in a carrier regenerating circuit to render the recovered carrier signal identical with  the  regenerated  carrier  signal  at  the  aperture interval.   Preferably,  a frequency calculating circuit calculates frequency errors between the recovered and the regenerated carrier signals for use in making the recovered carrier  signal  identical with  the  regenerated  carrier signal not only as regards phase but also as regards frequency.
Patent CA-2033303-A1 (CA)
Title: 2-aminopyrimidine-4-carboxamide derivatives, their preparation and their application in therapeutics
Inventor: GEORGE PASCAL
IPC: A61P15/00
Filed: 1990-12-27
Abstract: ABSTRACT      A compound of formula (I)                 (I) in which: n denotes 2, 3, 4 or 5, p denotes 0 or 1, R1 denotes a hydrogen atom or a methyl group, m denotes 0, 1, 2, 3, 4 or 5, and fluorine, chlorine, methoxy, isopropyl or cyclopropyl, in the form of a free base or an acid addition salt.
Patent CA-2035611-A1 (CA)
Inventor: ROTGANS PETRUS J
IPC: G01S7/41
Filed: 1991-02-04
Abstract: The invention relates to a radar apparatus provided with a detection unit, which determines the positions (12) of objects incorporating fast moving parts, such as helicopters. The detection unit thereto comprises a first range-azimuth area (3), a trend estimation and standard deviation calculation unit (5), a threshold (8), a second range-azimuth area (9) and a clusterer (11).
Patent CA-2038070-A1 (CA)
Inventor: BERNHARDT RAINER
IPC: G08B15/00
Filed: 1991-03-12
Abstract: A b s t r a c t :            A  protective  casing  for  optical  instruments,  particularly  a weatherproof casing with a casing shell (2), a casing axis A-A, a front wall (3) and a backwall (4) located on each end of the casing shell, and a casing support (9) located on the underside, which is attached to a stationary base (12). With at least one electric cable  (23a)  leading to a connector plug  (11)  located on the backwall (4). A detachable cable casing (20) is provided to house the cables out of sight, which extends from the base (12) to the connector plug (11), and together with the wall elements of the protective casing forms a closed cable conduit (21). At least one electrical  cable  (23a)  runs  inside the cable  casing  (20).  A particular advantage is that the cable casing first runs between the casing support (9) and the cable casing (20) parallel to the surface of the casing shell (2), forming the first segment (21a) of the cable conduit (21), and then is led in an angle around the back bottom edge (22) of the backwall (4). From there it runs forming the second segment (21b) of the cable conduit (21) to the connector plug (11), overlapping the same.            (Figure 1)
Patent CA-2039852-A1 (CA)
Title: Waste collection device
Inventor: GALEAZZI GIANCARLO
IPC: B65F1/12
Filed: 1991-04-05
Abstract: ABSTRACT OF THE DISCLOSURE      The waste collection device comprises a structure having a base and a cover which are suitable for delimiting a portion of space for the accommodation of a container. The structure is connected to lifting means suitable for providing movement between a position in which the structure is concealed within a pit and a position in which it protrudes completely from the pit. A hollow column is rigidly associated with the cover and is connected to the container for the insertion of waste.
Patent CA-2039929-A1 (CA)
Title: Toilet vent adaptor
Inventor: BOISVERT PAUL J
IPC: E03D9/05
Filed: 1991-04-08
Abstract: ABSTRACT OF THE DISCLOSURE            A flat wall adaptor installed invisibly between the toilet water tank and the back wall from which an air suction device removes fumes and odors from within the toilet bowl as it passes through the water tank overflow pipe and is expelled into the back wall of the toilet.
Patent CA-2043383-A1 (CA)
Inventor: SCHILLING CURTIS L JR
IPC: C07F7/18
Filed: 1991-05-28
Abstract: Novel silanes having sterically hindered aminohydrocarbyl groups of the formula X3SiRCR'2NR"2 and having utility as coupling agents and a process for their preparation are described.
Patent CA-2044126-A1 (CA)
Title: Precast insulated concrete panel for prefabricated building structure
Inventor: MAYRAND PAUL
IPC: E04C2/288
Filed: 1991-06-07
Abstract: Title: PRECAST INSULATED CONCRETE PANEL              FOR PREFABRICATED BUILDING STRUCTURE                    Abstract of the Disclosure A precast insulated concrete panel and a method of forming same and a building structure incorporating such panel is described.   The precast insulated concrete panel is comprised of an outer insulating skin formed by a rigid layer of insulating sheet foam material connected to a concrete inner wall layer cast on the inner surface of the insulating material.    The inner surface of the insulating  material  has  connecting  cavities  formed therein so that the concrete flows into the cavity and connects  to  the  rigid  insulating  material  through integral plugs of concrete which are set formed within the connecting cavities.   Connectors axe also formed in the  concrete  and  in  the  insulation  to  connect  and manipulate  the  panels  and  to  attach  outer  finishing building materials to the insulation.   These panels may be utilized in a tilt-up construction method and connect to floor slabs to form building structures of more than one storey.
Patent CA-2044291-A1 (CA)
Title: Non-yellowing polyurethane adhesives
Inventor: RUMON KENNETH A
IPC: D06M101/16
Filed: 1991-06-11
Abstract: A non-yellowing urethane adhesive based on a polyurethane prepolymer which is prepared by reacting a specific combination of polyhydroxy compounds and an isocyanate compound. The polyhydroxy compounds include a polyalkylene ether diol, a polyalkylene ether triol, and a polyester polyol. The combination of these polyhydroxy compounds and an isocyanate compound results in an adhesive composition which has exceptionally good resistance to high temperature, humidity, and sustained UV radiation, particularly when applied to fabric-like materials.
Patent CA-2045842-A1 (CA)
Title: Dna capable of site-specific integration into mycobacteria
Inventor: JACOBS WILLIAM R
IPC: A61P31/04
Filed: 1991-06-27
Abstract: ABSTRACT OF THE DISCLOSURE A DNA for integrating DNA into a mycobacterium chromosome which includes a first DNA sequence which is a phage DNA   portion   encoding   bacteriophage   integration   into   a mycobacterium chromosome, and a second DNA sequence encoding a protein or polypeptide heterologous to the mycobacterium in which the DNA is to be integrated.   Such DNA may be integrated into mycobacteria, which may then be administered as a vaccine and/or therapeutic agent.
Patent CA-2046438-A1 (CA)
Title: Synthetic crystalline aluminosilicate for the catalytic conversion of hydrocarbons in petrochemical processes
Inventor: THOME ROLAND DR
IPC: B01J29/70
Filed: 1991-07-08
Abstract: ABSTRACT       Synthetic crystalline alaminosilicate of the pentasil type and method for using the same as catalysts or catalyst components in petrochemical processes for the catalytic conver-sion of hydrocarbons and their derivatives into useful organic compounds and intermediates.
Patent CA-2048965-A1 (CA)
Title: Heater
Inventor: CURHAN JEFFREY A
IPC: H05B3/14
Filed: 1991-08-12
Abstract: HEATER            Abstract of the Disclosure A heater particularly adapted for use in automotive applications as a passenger compartment heater or the like has a housing with an opening and has a plurality of heat-exchanging fin members and self-regulating electrical resistance heater discs of positive temperature coefficient resistivity disposed in the housing to heat air or other fluid which is passed through the housing opening in heat-transfer relation to the fin members. Springs resiliently position fin members and heater discs in thermally and electrically conductive relation to each other between terminals accessible from the housing exterior to retain the fin members and heater discs engaged during thermal expansion and vibration for reliably energizing the heater discs to heat the fin members over a long service life.
Patent CA-2051754-A1 (CA)
Title: Stabilized pvc products and their production
Inventor: LEVIN GIDEON
IPC: C08F14/06
Filed: 1991-09-18
Abstract: Abstract Crosslinked  plasticized or unplasticized PVC products having gradient  crosslinking  density,  with  a  high  crosslinking density  on  the outer surface and a low or none crosslinking density at the bulk of the product, are prepared by immersing the PVC product in a hot water  solution  of  a  crosslinking material  and  a  phase  transfer  catalyst.    The  products obtained provide controlled release  of  substances  occluded within  the  PVC   matrix,   thus   preventing   leakage   of plasticizers, stabilizers and other additives, and permitting controlled  slow  release  of  substances like   pesticides, fertilizers,  drugs  and  the  like,  into  the   surrounding environment.
Patent CA-2051836-A1 (CA)
Inventor: FLYNN RICHARD M
IPC: B42D15/10
Filed: 1991-09-25
Abstract: A personal data card (10), also known as a smart card, comprises a lamination of thermoplastic sheets. One sheet (140) is a circuit board made frompolyester film having metallic interconnection paths (144) on its surface formed by etching. Smart card circuitry, including one or more frangible semiconductor chips (200), are mounted on the circuit board. Another sheet (130) is a structural (strength) member which comprises polyester film that has been heat-stabilized and includes a heat-activated adhesive (133) on both sides (131, 132). The structural member has through-holes (136, 137) for receiving components (200, 500) mounted on the circuit board when these sheets are brought together, and for admitting an epoxy encapsulant (300, 400) poured therein. When the encapsulant cures, it is much more rigid than the polyester card body and thus protects the semiconductorchips from breaking when the card is bent. Top and bottom sheets (110, 150) of the smart card comprise thin films of polyvinyl chloride that protect the card from external contaminants and have identical thermal expansion characteristics so that the laminated structure does not warp with changing temperatures.
Patent CA-2053417-A1 (CA)
Inventor: MASTERS JOHN V
IPC: B60W30/18
Filed: 1991-10-15
Abstract: A hand operated automobile brake and accelerator operation assembly for the handicapped can be readily transferred from car to car without tools and is adaptable to various models of cars.  It is installed by clamping onto the brake pedal shaft with manually operable wing nuts or the like as the sole fixed connecting bracket on the car.  The brake pedal and accelerator pedals are respectively operated by pushing and pulling by hand an operating rod to move an operating lever fulcrumed on a pivot axis fixed relative to the brake pedal shaft.  This operating lever moves an accelerator operating shaft into contact with the accelerator pedal to depress it as the hand operated rod is pulled. Conversely when pushed the hand operated rod depresses the brake pedal and release the accelerator.  To accommodate different car models an accelerator operating shaft has a manually operated lock to fix its length, and the accelerator assembly distance from the brake is adjustable.  Thus the assembly can be installed and changed from car to car with few or no tools.
Patent CA-2053705-A1 (CA)
Title: Piperazine derivatives
Inventor: CLIFFE IAN A
IPC: C07D307/54
Filed: 1991-10-18
Abstract: Piperazine derivative of formula (see formula I) and the pharmaceutically acceptable acid addition salts, where A is an alkylene chain of 1 or 2 carbon atoms optionally substituted by one or more lower alkyl groups; m is 0, 1 or 2, R is hydrogen or lower alkyl, R1 is aryl or a mono o.r bicyclic heteroaryl radical, R2 is hydrogen or lower alkyl, R3 is a heteroaryl radical, R4 is hydrogen, lower alkyl or aryl, and R5 is hydrogen, lower alkyl, cycloalkyl, cycloalkyl(lower)alkyl; aryl, or aryl(lower)alkyl or R4 and R5 together with the nitrogen atom to which they are both attached represent a saturated heterocyclic ring which may contain a further hetero atom are 5-HT1A- binding agents and may be used, for example, as anxiolytics.
Patent CA-2056517-A1 (CA)
Title: Acoustic waveguides with reduced trailing echoes
Inventor: JEN CHENG-KUEI
IPC: G10K11/24
Filed: 1991-11-29
Abstract: ABSTRACT   Acoustic buffer rods are useful in the nondestructive ultrasonic evaluation of materials. In order to reduce the occurrence of spurious signals in the reflected acoustic waves forming an acoustic "image" of a sample, it is proposed to design buffer rods such that their radial acoustic velocity profile is graded, preferably having a parabolic shape. The lowest acoustic velocity of the buffer rod is in its centre, i.e. at the longitudinal axis of the rod. This design is applicable to both uncladded buffer rods as well as to the core of cladded ones.
Patent CA-2057915-A1 (CA)
Title: Floor waste fitting support
Inventor: WOODS ROBERT J
IPC: E03F5/04
Filed: 1991-03-01
Abstract: A floor waste fitting support comprising a body (1), a passageway (5, 6, 7) through the body from an inlet end (2) to a discharge end (4) of the body, a first passageway part (5) adjacent the inlet end (2) larger than the waste fitting to be supported, positioning means including an intermediate passageway part (6) and stop means (38) to position a waste fitting in the support, and water bypass means (9, 10) within the passageway to bypass the positioning means (6, 38) and place the first passageway part (5) in permanent communication with the passageway part (7) downstream from the positioning means (6, 38).
Patent CA-2058500-A1 (CA)
Title: Cryogenic process for producing ultra high purity nitrogen
Inventor: AGRAWAL RAKESH
IPC: F25J3/04
Filed: 1991-12-27
Abstract: ABSTRACT   This invention relates to a cryogenic process for the separation of air utilizing an integrated multi-column distillation system wherein an ultra high purity nitrogen product is generated.  In the cryogenic distillation separation of air,  air is initially compressed  pretreated and cooled for separation into its components.  Ultra high purity  e.g.  nitrogen having less than 0.1 ppm of light impurities is generated with enhanced nitrogen product recovery by withdrawing liquid nitrogen from a first column at an intermediate point and charging that fraction as feed to the second column  withdrawing a nitrogen stream which is rich in volatile contaminants from the top of the first column  partially condensing that nitrogen stream against crude liquid oxygen  and removing the uncondensed portion which has been concentrated in volatile contaminants as a purge stream.  An ultra high purity nitrogen product is obtained from a second column.