baber/WOPTO huggingface dataset:
Patent CA-2005295-A1 (CA)
IPC: B60T15/42
Filed: 1989-12-12
Abstract: (Case No. 8351) ABSTRACT OF THE DISCLOSURE   A  continual  type  quick service valve adapted to be independently  mounted on a railway car to provide local, supplemental  venting  of the car brake pipe pressure, as long  as  the brake pipe pressure continues to be reduced externally.    This  quick  service  venting of the brake pipe  pressure  is  achieved  utilizing  a  single piston actuated     exhaust     valve     that     is     either cyclically-operated  between open and closed states or is held  open  continuously  depending  upon  the  degree of brake  application  in  effect.  By selective tuning, the open  duration of the exhaust valve can be made to exceed the  duration  the  exhaust  valve  is closed during each cycle  of operation or to remain open for the duration of the  external  brake  pipe  pressure reduction to achieve high operating efficiency.
Patent CA-2007107-A1 (CA)
Title: 6,7 dihydropyrrolo(3,4-c) pyrido(2,3-d) pyrimidine derivatives
Inventor: WATANABE KYOICHI A
IPC: C07D471/14
Filed: 1990-01-04
Abstract: 6,7 DIHYDROPYRROLO [3,4-c] PYRIDO[2,3-d]         PYRIMIDINE DERIVATIVES            Abstract of the disclosure The  present  invention  concerns  compounds  of  the formula:                       wherein R is a lower alkyl group, an aryl group or an alkylaryl group and X and Y are the same or different, and each is OH, NH2, or SH.  The aryl group or the aryl moiety of the alkylaryl group may be unsubstituted, monosubstituted,  disubstituted or trisubstituted.   If substituted,  each substituent may independently be an alkyl group, an alkyloxy group or a halogen.            The  present  invention  also  provides  methods  for synthesizing the compounds described above.
Patent CA-2008658-A1 (CA)
IPC: F16L37/12
Filed: 1990-01-26
Abstract: ABSTRACT OF THE DISCLOSURE          A tubular arthroscopic sheath having improved irrigating fluid flow characteristics and having a quick coupling socket adapted to quickly connect to and disconnect from an associated arthroscopic tool provided with a mateable, generally cylindrical plug member.  The fluid flow is enhanced by centering projections on the sheath interior and by turbulence minimizing fluid ports. The socket comprises an open ended cylindrical housing provided with a plurality of annularly spaced, cylindrical locking pins slidable within throughbores in the housing wall, the throughbores extending radially from the housing axis and axially skewed with respect thereto.  Each pin is provided with a notch in its cylindrical surface adjacent the most radially outward end of the pin.  A pair of slidable coaxial cylindrical actuating members is adapted to engage all the notches and capture the pins.  Moving the slidable actuating members away from the open end of the housing causes the pins to slide radially outwardly in the throughbores.  Allowing a bias means to urge the actuating members toward the open end of the housing causes the pins to slide radially inwardly.                               - ?? -
Patent CA-2008727-A1 (CA)
Title: Method and apparatus for monitoring a fluid conduit system for leaks
Inventor: STENSTROM THEISS
IPC: F17D5/02
Filed: 1990-01-26
Abstract: ABSTRACT           A method and apparatus are proposed for monitoring a fluid conduit system for leaks.  To detect a leakage flow of less than 25 1/h, after closing a main valve (4), the time is measured that is taken by the pressure in the conduit system (12, 13) to drop to a predetermined first value.  On reaching this value, a shunt valve (6) is opened and the time is measured that is required by the pressure to rise to a second predetermined value.  The leakage flow is calculated from the two times and the two pres-sures together with known constants for the conduit system. Fig. 1
Patent CA-2011546-A1 (CA)
Title: Pressure reduction device for particle sampling from compressed gases
Inventor: WANG HWA-CHI
IPC: G01N1/22
Filed: 1990-03-06
Abstract: ABSTRACT OF THE DISCLOSURE    Disclosed is a device for particle sampling from compressed gases.  The device allows for analyzing particles from compressed gases of a pressure ranging from 20 psi to 3000 psi.  In the device, the formula Ds = Dt ? (Qs/Qt) is applicable wherein Ds and Dt are the probe diameter and the chamber diameter, respectively, Qs is the sampling flow rate required by monitoring  instruments, and Qt is the total flow rate determined by the orifice diameter and pressure whereby the sampling velocity substantially matches the local flow velocity at the probe.  In addition, a distance between the orifice and the probe is greater than L wherein L = Dc/ (2 tan .alpha. ) where Dc is the chamber diameter and a is the half angle of jet expansion.
Patent CA-2012169-A1 (CA)
Title: Ignitor device
Inventor: HYDE KING W
IPC: F23G7/08
Filed: 1990-03-14
Abstract: IGNITOR DEVICE     ABSTRACT     The present invention provides an ignitor device having a burner tube, a nozzle, an expansion tube leading between them, and a means to spark an air/fuel mixture introduced into said burner tube.  The ignitor is used to ignite waste gases exiting from an attached flare pipe.  A baffle plate is also provided to prevent flame from damaging the ignitor or flare pipe.  A bonnet with internal vanes is also provided to protect the combusting waste gas from high winds and to swirl the flame for stability.
Patent CA-2012636-A1 (CA)
Inventor: ASTON STEPHEN C
IPC: B65D5/54
Filed: 1990-03-20
Abstract: The invention provides a packaging container which is formed from a blank of cut and creased sheet material. The container is rectilinear in nature and is sealed. It has a flip top lid which is opened by engaging a tear tab with the finger and by removing a tear strip to release the flip top lid to gain access to the contents.
Patent CA-2013667-A1 (CA)
IPC: A47C9/10
Filed: 1990-04-02
Abstract: ABSTRACT OF THE DISCLOSURE    A tree climbing stand utilizing two climbing elements. Also provided is a spring actuated mechanism for locking the tree stand in its expanded, operational position, a retractable safety bar for supporting the back of the climber, and a readily removable cleat, which may be included or excluded at the discretion of the user, for engaging the tree.
Patent CA-2015302-A1 (CA)
Inventor: KIOKA MAMORU
IPC: C08F299/00
Filed: 1990-04-24
Abstract: Abstract Proposed herein is a process for preparing thermoplas-tic elastomers, which comprises bringing polymer particles, each composed of a portion comprising a crystalline olefin polymer  and  portions  comprising  an  amorphous  olefin polymer, in contact with a crosslinking agent optionally in the presence of a crosslinking auxiliary and/or a mineral oil softening agent a temperature below the higher one of the melting point of the crystalline olefin polymer and the glass  transition  temperature  of  the  amorphous  olefin polymer to obtain a thermoplastic elastomer crosslinked within the particles.  Also proposed herein is a process for preparing thermoplastic elastomers,  which comprises bringing polymer particles,  each composed of a portion comprising  a  crystalline  olefin  polymer  and portions comprising an amorphous olefin polymer, in contact with a radical initiator and a graft modifier optionally in the presence of a crosslinking agent, a crosslinking auxiliary, a swelling solvent and/or a mineral oil softening agent at a temperature below the higher one of the melting point of the crystalline olefin polymer and the glass transition temperature of the amorphous olefin polymer to obtain a thermoplastic elastomer graft modified and crosslinked within the particles.
Patent CA-2017135-A1 (CA)
Title: Substituted (quinolin-2-yl-methoxy)phenyl-acyl-sulphonamides and -cyanamides, processes for their preparation and their use in medicaments
Inventor: RADDATZ SIEGFRIED
IPC: A61P29/00
Filed: 1990-05-18
Abstract: A quinolin-2-yl-methoxy)phenylacyl-sulphonamide or -cyanamide of the formula (SEE FORMULA I) in which A, B, D, E, L and G are identical or different and - represent hydrogen, hydroxyl, halogen, carboxyl, Nitro, trifluoromethyl, trifluoromethoxy or a group of the formula -NR3R4, in which R3 and R4 are identical or different and denote hydrogen, straight-chain or branched alkyl having up to 8 carbon atoms or aryl having 6 to 10 carbon atoms, - represent straight-chain or branched alkyl, alkoxy or alkoxycarbonyl in each case having up to 12 carbon atoms, - represent aryl having 6 to 10 carbon atoms, R1 - represents cycloalkyl having 3 to 8 carbon atoms, R2 - represents hydrogen or - straight-chain or branched alkyl having up to 10 carbon atoms, - represents an alkali metal, - represents cycloalkyl having 3 to 8 carbon atoms, X - represents a group of the formula -SO2-R5, in which R5 - denotes trifluoromethyl or straight-chain or branched alkyl having up to 10 carbon atoms, or - denotes aryl having 6 to 10 carbon atoms, or X - represents cyano and physiologically acceptable salts thereof.      The (quinolin-2-yl-methoxy)phenylacylsulphonamide or -cyanamide is useful as an active compound in medica-ments, particularly as a lipoxygenase inhibitor.
Patent CA-2018376-A1 (CA)
Title: Retaining and/or pouring means for tanks for metal melting baths
Inventor: COMES HEINRICH
IPC: B22D41/08
Filed: 1990-06-06
Abstract: ABSTRACT                RETAINING AND/OR POURING MEANS FOR TANKS FOR METAL MELTING BATHS         The invention relates to means for retaining contaminations in metal melting baths, e.g. a tundish containing molten metal.           Contaminations,  e.g.  from  slag  and  other covering layers on the metal surface, can pass through the outlet of the tundish and hence contaminate the cast metal.  The invention aims to avoid this problem by  providing  an  annular  buoyancy  body  (2)  which surrounds the outlet (4),  the body (2) being in the form of a protective ring preventing particles (10, 11) floating on the surface of the metal (12) from entering outlet  (4).    The  body  (2)  may  be  constrained  to surround a starting tube (1) which surrounds outlet (4) and to float up the starting tube (1) with increasing depth of molten metal (12).   Pouring openings (3) in the starting tube (1) are thereby effectively closed by body (2) as the slag-covered surface of the metal (12) rises above the openings (3) and the openings (3) are then exposed to allow molten metal (12) to flow through only after layers (10, 11) of potential contaminations have safely passed.
Patent CA-2019114-A1 (CA)
Inventor: HAUVILLE FRANCOIS P
IPC: B01D46/10
Filed: 1990-06-15
Abstract: An apparatus for removing contaminants generated in a volume of air contained within a work structure includes a housing, an inlet aperture disposed in the housing for receiving the contaminated air generated in the structure, an outlet aperture for passing of filtered air disposed in another portion of the housing removed from the inlet aperture and a plurality of removable interchangeable filter units disposed in the housing in spaced relationship between the inlet and outlet apertures thereby forming a plurality of chambers each defined by adjacent filter units and the housing. A detector device is engaged with at least the first chamber adjacent the inlet aperture for detecting the level of concentration of contaminants in the air passing through the chamber. The apparatus also includes a fan device to direct the contaminated air from within the work structure through the inlet aperture of the housing whereby the contaminated air passes through each filter unit and intermediate detection chambers for removal of at least a portion of the contaminants, and then to direct the filtered air through the outlet aperture. In a preferred embodiment the fan device is positioned adjacent the inlet aperture for the purpose of increasing the pressure of air passing through the filter units to thereby optimize the filter capacity of the filter units.
Patent CA-2019161-A1 (CA)
Title: Lime metering device
Inventor: STRANDBERG ANDERS
IPC: B01J4/00
Filed: 1990-06-18
Abstract: Abstract of the Disclosure A lime feeder includes a metering driving vessel divided into two chambers arranged below a water inlet so that, alternatively one and the other chamber is filled with water and tilts between two end positions.  The tilting movement is conducted by a carrier bar fastened in the metering vessel, to carriers that, in turn, drive a disk back and forth.  The disk, in turn, feeds lime from a lime hopper with a movement back and forth.  The lime powder is thereby brought to fall into the chamber of the metering vessel that has already been emptied.  In this way, the lime will be wetted so that when it arrives in the stream of water, it is already suspended, which results in a more efficient dissolving of the lime.--
Patent CA-2020712-A1 (CA)
Inventor: DAIKUZONO NORIO
IPC: A61B17/22
Filed: 1990-07-09
Abstract: ABSTRACT OF THE DISCLOSURE       A laser catheter for the treatment of lesions and plaque deposits in arteries and other narrow paths having a radiation assembly affixed to a flexible conduit.   The conduit generally includes multiple lumens for the passage of an optical fiber, a guide wire, a cooling medium therethrough, or fluid for inflating an angioplasty balloon.   The radiation assembly is of  short longitudinal profile and includes a generally spherical laser contact member retained within a housing, the latter affixed to the flexible conduit.   The radiation assembly provides a dual-mode ablation/melting treatment regime.   A longitudinal channel  is provided through and along one side of the contact member thereby to permit guide wire positioning of the laser catheter while routing the guide wire away from the laser energy to avoid damage thereto.  A balloon, in fluid communication with a catheter lumen, may  be  positioned  rearwardly  of  the  radiation  assembly  for secondary balloon angioplasty operations.
Patent CA-2021481-A1 (CA)
Title: Method of subcarrier multiplication which preserves am information in fm systems
Inventor: ROVIRA LUIS A
IPC: H04N5/38
Filed: 1990-07-18
Abstract: A METHOD OF SUBCARRIER MULTIPLICATION THAT   PRESERVES AM INFORMATION FOR USE IN FM             SYSTEMS          ABSTRACT OF THE DISCLOSURE       A multiplication circuit for use in an FM television transmitter and receiver is provided. The multiplication circuit includes a limit-ing circuit for limiting a subcarrier supplied thereto and a dividing circuit coupled to the limiting circuit and dividing the output of the limiting circuit by a predetermined factor. A mixer is coupled to the dividing circuit and mixes the output of the dividing circuit with the subcarrier.
Patent CA-2030423-A1 (CA)
Title: Method and apparatus for direct high velocity preparation of completion/workover systems
Inventor: RICHARD BENNETT M
IPC: E21B21/06
Filed: 1990-11-21
Abstract: METHOD AND APPARATUS FOR DIRECT HIGH VELOCITY   PREPARATION OF COMPLETION/WORKOVER SYSTEMS                   ABSTRACT OF THE DISCLOSURE         An apparatus is provided for direct high velocity, consistent, uniform preparation of completion/workover systems for use in subterranean wells.  The system has a screw type conveyor extending through a mixing housing which is in direct communication with a pump.  Passageways are provided through the housing for the screw type rotatable conveyor and through the mixing chamber housing in axial alignment with openings in the pump  such that the diametric area between the interior of the mixing housing and the exterior of the conveyor housing provides sufficient transport velocity for the carrier fluid and the solid particulate matter from the point of mixing in the annulus, through the annulus and to the inlet of the pump.
Patent CA-2031993-A1 (CA)
Title: Variable stroke metering pump with damping and pump cycle duration control
Inventor: SANTI FRANCO
IPC: F04B9/125
Filed: 1990-12-11
Abstract: Pump units comprising a metering reciprocating pump with adjustable length of stroke are used in packing machines for filling of packing containers with a metered quantity of flowable contents, e.g. yoghurt.            Adjustments in the length of stroke in order to adapt the amount of filling goods to the volume of the packing container interferes with the breaking sequence at the extreme position of the piston and alters the time for each pumping stroke.            These drawbacks are avoided by means of an arrangement which includes a movable braking device (16) for the piston (6) as well as a valve arrangement (10,11) which is linked to the braking device (16) and serves to adapt the speed of the piston to the length of stroke.
Patent CA-2033095-A1 (CA)
Inventor: ISHII HIROMITSU
IPC: C08G63/60
Filed: 1990-05-17
Abstract: An elastic polyester is continuously prepared by continuously supplying an aromatic polyester and a lactone compound into an extruder which has (A) a cylinder having a shape of 3  L/D  70 (where L represents the length of the cylinder and D represents the inner diameter of the cylinder) and (B) at least one screw and wherein (C) the occupancy ratio of the space in the inner volume of the cylinder in the screw-attached state is not larger than 70%, and reacting the aromatic polyester with the lactone compound while performing melting, delivery and kneading in the extruder, according to this process, the reaction time can be shortened, and an elastic polyester can be easily prepared at a high efficiency by simplified apparatus and operations.  The obtained elastic polyester has an excellent durability represented by heat resistance and weatherability and has an excellent rubbery elasticity and mechanical properties.  Accordingly, this elastic polyester can be widely used for the production of automobile parts, electric and electronic parts, machine parts and the like.
Patent CA-2034149-A1 (CA)
Title: Method and apparatus for chlorinating water with liquefied chlorine
Inventor: JONES WALTON B
IPC: B01F3/08
Filed: 1991-01-15
Abstract: METHOD AND APPARATUS FOR CHLORINATING     WATER WITH LIQUEFIED CHLORINE     ABSTRACT    A liquefied gas, such as liquefied chlorine, which is injected into a liquid stream such as an aqueous stream in the liquid state, is prevented from causing the liquid stream to freeze by cooling the liquefied gas to a temperature below its boiling point at the pressure of the liquid stream.
Patent CA-2036412-A1 (CA)
Title: Optical head
Inventor: FUJITA SHUICHI
IPC: G11B7/1359
Filed: 1991-02-15
Abstract: ABSTRACT OF THE DISCLOSURE     A separate-type optical head having a fixed unit equip-ped with a light source and a photo-detecting system separ-ated from a movable unit equipped with a light reflecting system which reflects and converts a light from the light source to be a light incident upon an optical disk perpend-icularly and returns the reflecting light from the optical disk to the fixed unit, wherein a prism having reflecting surfaces being at angles of 45°  to each other is arranged for the reflecting system in the movable unit for reflecting the light from the light source so as to a light incident upon the optical disk perpendicularly even in the case where the movable unit inclines to the optical disk.
Patent CA-2037850-A1 (CA)
Title: Laser apparatus with preionization
Inventor: FURUYA NOBUAKI
IPC: H01S3/097
Filed: 1991-03-08
Abstract: TITLE OF THE INVENTION            LASER APPARATUS WITH PREIONIZATION                 ABSTRACT OF THE DISCLOSURE      A laser apparatus with preionization comprises: a laser medium; main electrodes for produce a glow discharge therebetween; an optical resonator; a first capacitor for storing a first charge used for production of the glow discharge; a preionizing circuit including a spark gap and a second capacitor connected to the spark gap in series for illuminating the laser medium around the electrodes with sparks developed between the spark gap in response to charging of the second capacitor through the spark gap with a second charge, the preionizing circuit being connected to the first capacitor in parallel; and a charging circuit responsive to a control signal for charging the first and second capacitors with the first and second charges received from a high voltage source.  The second capacitor is provided only for discharging, thus the current flows in the spark gap is reduced, so that wear of the spark gap is reduced.  Inductance associated with glow discharge is reduced because the spark gap is removed from the discharge circuit including the first capacitor, so that the discharge glow starts rapidly.  A coil may be inserted in the preionizing circuit in series to control a current flowing therein.
Patent CA-2038624-A1 (CA)
Title: Coating compositions including blocked basic catalysts
Inventor: NOOMEN ARIE
IPC: C08F4/00
Filed: 1991-03-19
Abstract: ABSTRACT OF THE DISCLOSURE       COATING COMPOSITIONS INCLUDING BLOCKED BASIC CATALYSTS         A thermosetting coating composition is provided, which composition is based upon (A) an activated unsaturated group-containing compound, (B) an activated CH group-containing compound and (C) a strong basic catalyst, wherein the strong basic catalyst is blocked with a [particular] carboxylic acid which is volatile and/or undergoes decarboxylation under curing conditions.   These coating compositions possess extended potlife, good curing speed, and a good balance of physical and mechanical properties making them especially well suited for a variety of coatings uses such as in paint, impregnating, sealing and bonding compositions.
Patent CA-2039871-A1 (CA)
Title: Shock absorbing ski pole
Inventor: SUGIYAMA KAZUO
IPC: A63C11/22
Filed: 1991-04-05
Abstract: ABSTRACT           A ski pole that can accomplish the following capabilities: (1) absorb little shocks caused when the ski pole tip is thrust into snow, thereby protecting members of the human body and minimizing fatigue for short and long terms, (2) quick returning and removal from snow within hundredths of a second, (3) high thrusting capability of the pole tip into ice, (4) minimum sticking of the pole tip to heavy or solid snow, (5) effective propelling action by the repulsing force of the bumping spring when of descending and sliding, thereby helping to shorten time, (6) workable, depending on use and skill level of a skier, in alpine descending and nordic sliding, and (7) safeness against dangers of falling, collision, and similar occasions.
Patent CA-2041393-A1 (CA)
Title: Systeme d'articulation de panneaux et application aux portes sectionnelles
Inventor: ESNAULT PAUL
IPC: E06B3/48
Filed: 1991-04-29
Abstract: ABREGE DESCRIPTIF SYSTEME D'ARTICULATION DE PANNEAUX ET APPLICATION AUX PORTES SECTIONNELLES L'invention concerne un système d'articulation de deux panneaux du type comprenant une charnière flexible (4) et des profilés (1, 2 ; 3) de bordure de panneaux conformés pour maintenir ladite charnière flexible. Selon l'invention, la charnière flexible (4) est composée d'un boudin central (13), agencé au voisinage du plan médian des panneaux, et de deux ailes (14, 15) adaptées pour s'encliqueter dans les profilés de bordure ; ces derniers comprennent des logements (L1, L2) permettant cet encliquetage et des surfaces de guidage (Sx, Sc ; Sax, Sac, AL) agencées de part et d'autre du plan médian des panneaux, en vue de guider leur pivotement autour d'un axe de rotation passant par le boudin central de la charnière flexible. L'invention peut en particulier s'appliquer pour réaliser des portes sectionnelles.