baber/WOPTO huggingface dataset:
Patent CA-1304449-C (CA)
Title: Polarographic oxygen sensor with glass seal
Inventor: KOCH CAMERON J
IPC: G01N27/409
Filed: 1987-11-05
Granted: 1992-06-30
Abstract: ABSTRACT OF THE DISCLOSURE           The cathode sub-assembly of a polarographic sensor comprises an elongate housing with a longitudinal opening therethrough and with noble metal wires extending completely through the opening,  the wires held symmetrically in the longitudinal opening by an extensive plug of glass which is solidified in situ in sealing contact with the wires and with the wall of the longitudinal opening.   A suitable tubular anode is provided through which the cathode sub-assembly protrudes, and a flexible membrane of an inert material, which is permeable to gas and impermeable to water vapour and other than gaseous dissolved solutes, is secured in sealed relationship over the anode and the cathode, with a film of electrolyte bathing the anode and the cathode and contained by the membrane.
Patent CA-1283841-C (CA)
Title: Seat slide structure
Inventor: REES RICHARD W A
IPC: B60N2/07
Filed: 1987-12-21
Granted: 1991-05-07
Abstract: ABSTRACT OF THE DISCLOSURE     A seat slide structure is provided for supporting a vehicle occupant seat on a vehicle.  An elongate channel is provided having a cylindrical guideway and an elongate slot.  A generally cylindrical slide tube is coaxially received in the guideway with a planar support coupled to the tube and extending via this slot out through the channel member.  Ring bearing means are provided within the channel member between the channel member and the slide tube to locate the slide tube coaxially slidable within the guideway.  End caps are provided coaxially about each end of the channel member and serve to couple the channel member to the vehicle floor with improved resistance to failure under stress load conditions.
Patent CA-1338687-C (CA)
Title: Catalysts, method of preparing these catalysts and polymerization processes wherein these catalysts are used
Inventor: TURNER HOWARD WILLIAM
IPC: C08F4/42
Filed: 1988-01-19
Granted: 1996-10-29
Abstract: A catalyst is prepared by combining, in a suitable solvent or diluent, at least one first component consisting of a bis(cyclopentadienyl) derivative of a Group IV-B metal containing at least one ligand capable of reacting with a second component, which second component comprises a cation which will irreversibly react with at least one ligand in said first component and a stabilizing anion comprising a plurality of boron atoms which anion is bulky and stable to any reaction involving the cation of the second component and sufficiently labile to permit displacement by an olefin, diolefin, and/or acetylenically unsaturated monomer, and (b) maintaining the contacting in step (a) for a sufficient period of time to permit the cation of said second component to react with said ligand in said first component thereby forming an active catalyst either as a direct product or as a decomposition product thereof. Many of the catalysts thus formed are stable and isolable and may be recovered and stored.  The catalysts may be preformed and then used to polymerize olefins or the catalysts may be formed in situ during polymerization by adding the separate components to the polymerization reaction.  The catalyst will be formed when the two components are combined at a temperature within the range from about -100°C to about 300°C.  The catalysts thus prepared afford better control of polymer molecular weight and are not subject to equilibrium reversal.  The catalysts thus produced are also less pyrophoric than the more conventional Ziegler-Natta olefin polymerization catalysts.
Patent CA-1314041-C (CA)
Title: Vortex ring mixers
Inventor: LATTO BRIAN
IPC: F15D1/00
Filed: 1988-03-18
Granted: 1993-03-02
Abstract: ABSTRACT         The invention discloses mixing equipment including a  plate  having  an  orifice,  and  means  for  producing reciprocating relative motion at right angles to the plane of the plate between the plate  and a  fluid in which it is immersed to generate a ring vortex through the orifice, the orifice plate and orifice being positioned such that the ring vortex is projected into the fluid to be mixed, the orifice in the plate and the stroke of the plate are defined by the relationship 1.5 ? L/d ? 3.5, where L is the stroke of the plate and d is the diameter of the orifice.
Patent CA-1326151-C (CA)
Inventor: AUTIO MARKKU
IPC: D21F3/04
Filed: 1988-04-14
Granted: 1994-01-18
Abstract: STRUCTURAL FRAME FOR SEPARATE NIPS IN A PRESS SECTION        ABSTRACT OF THE DISCLOSURE        Structural frame for a press section in a paper machine in which there are two or three succeeding, separate press nips substantially dewatering a web.  The nips are each formed between two opposite press elements, such as press rolls.  The web runs supported by a dewatering and/or transfer fabric through the nips.  The structural frame comprises a front frame and a rear frame separate from one another, with a space open at the top being provided therebetween.  This space is arranged so as to be utilized in replacement of both upper press and/or transfer fabrics and of the press rolls.  At least the upper roll of the first or second nip is attached in connection with the rear part of the front frame.  At least the upper roll of the second or third press nip is fitted in conjunction with a front part of the rear frame.
Patent CA-1319371-C (CA)
Title: Polyalkylene polyamines via vapor phase reaction
Inventor: TURCOTTE MICHAEL G
IPC: C07C209/16
Filed: 1988-05-05
Granted: 1993-06-22
Abstract: ABSTRACT      This invention pertains to an improved process for preparing noncyclic polyalkylene polyamine compounds in high selectivity by reacting an alkanolamine and an alkylene amine in the presence of an acidic catalyst.  The improvement resides in effecting the reaction under fixed bed catalytic conditions and maintaining the reaction conditions such that a vapor phase condition exists for the reaction mixture comprising both reactants and products.  To accomplish the formation of vapor phase conditions, sufficient alkylenediamine is injected into the feedstream along with alkanolamine, temperature is maintained from 200-280°C, and pressure ranges from about 0 psig to 150 psig so that the dew point temperature of the reaction product mix is below the reaction temperature at reaction pressure.
Patent CA-1285664-C (CA)
Inventor: LIN BURN J
IPC: G03F1/00
Filed: 1988-05-26
Granted: 1991-07-02
Abstract: LITHOGRAPHIC PROCESS USING MASK WITH SMALL OPAQUE OR TRANSPARENT ELEMENTS                         Abstract A lithographic process having improved image quality by employing a mask that includes  a plurality of opaque elements or transparent elements that are smaller than the resolution of the lithography to be employed in order to  control  the  transmittance  of  the  actinic  light exposure area.
Patent CA-1301114-C (CA)
Title: Apparatus for storing and displaying jewellery
Inventor: GERMAIN SYLVIA
IPC: B65D73/00
Filed: 1988-05-31
Granted: 1992-05-19
Abstract: ABSTRACT           An apparatus for displaying or storing jewellery, comprising in combination a support means and successive layers of spacing means, a backing and a retention medium.
Patent CA-1283665-C (CA)
Title: Method for producing p-alkylstyrene
Inventor: SHIMIZU ISOO
IPC: C07C15/46
Filed: 1988-07-21
Granted: 1991-04-30
Abstract: ABSTRACT OF THE DISCLOSURE           A method for producing p-alkylstyrene which is characterized in that side reaction scarcely occurs, catalyst and unreacted material are easily recovered for the reuse, the p-position selectivity is excellent and yield of aimed product is high.  In the method, monoalkylbenzene having an alkyl group with 3 or more carbon atoms is reacted with acetaldehyde in the presence of hydrogen fluoride catalyst under the conditions of a temperature of 0°C or lower, a molar ratio of 2 to 100 in "alkylbenzene/acetaldehyde", the other molar ratio of 1.7 to 300 in "hydrogen fluoride/acetaldehyde", the proportion of hydrogen fluoride to the sum of hydrogen fluoride and water in the reaction system of 65% by weight or higher, and the concentration of acetaldehyde in the reaction system of 1.0% by weight or lower to obtain 1,1-bis(p-alkylphenyl)ethane, and then subjecting it to catalytic cracking at a temperature in the range of 200 to 650°C in the presence of an acid catalyst.
Patent CA-1304335-C (CA)
Title: Metering valve temperature compensation
Inventor: PERKINSON ROBERT H
IPC: F02M37/00
Filed: 1988-08-19
Granted: 1992-06-30
Abstract: Abstract Metering Valve Temperature Compensation An apparatus for correcting the weight flow of fluid passing through a fuel control is shown.  A bimetallic probe is placed within a metering spool to sense temperature variation of the fuel passing therethrough.  A feedback mechanism senses changes in the probe and nulls the spool.  The spool cooperates with specially shaped windows in a sleeve so that a percentage change in temperature allows a corresponding percentage change in fuel flow thereby offsetting changes in fuel density (and weight flow) caused by temperature changes.  The probe is comprised of a rod and a perforated shell.
Patent CA-1332757-C (CA)
Title: Loading system for tape cassette in recording and/or reproducing apparatus
Inventor: KUMAGAI TAKAO
IPC: G11B15/675
Filed: 1988-11-09
Granted: 1994-10-25
Abstract: ABSTRACT OF THE DISCLOSURE   A magnetic tape cassette loading system is provided with a tape cassette holder which is movable between a first position in which the tape can be withdrawn from the tape cassette and disposed in a tape path including a record replay head, and a second position in which the cassette can be removed or inserted into the holder. A detent mechanism is provided for cooperation witha cam formed integrally with the cassette holder to define an intermediate position between the first and second positions of the holder In the intermediate position the cassette cannot accidentally fall out of the tape cassette loading system. When the tape cassette is to be removed from the tape cassette loading system the holder is manually actuated from the intermediate to the second or fully open position and the tape is removed manually. With this construction theneed for a heavy cassette holder damping unit is eliminated.
Patent CA-1326260-C (CA)
Inventor: DOUGHERTY LAWRENCE W
IPC: H01J9/20
Filed: 1988-11-10
Granted: 1994-01-18
Abstract: ABSTRACT         A process is disclosed for use in the manu-facture of a color cathode ray tube having a rectangular flat faceplate.  The process comprises positioning the faceplate in a predetermined x-y plane by referencing faceplate a-b-c reference areas on two adjacent edges or sides of the faceplate with complementary a-b-c reference points on a faceplate locating fixture; the fixture also has three spaced six-point precision index-ing means.  With the faceplate a-b-c reference areas and the faceplate locating fixture a-b-c points mutually referenced, six-point precision indexing means are at-tached to the faceplate in registration with the precision indexing means on the faceplate locating fixture.  Using the precision indexing means attached to the faceplate, a shadow mask is registered with the faceplate through the use of complementary precision indexing means to pro-vide a faceplate shadow mask assembly in mutual precise registry.  Using the registered faceplate-shadow mask assembly, a pattern of phosphors is photodeposited on the faceplate by photoexposure means.  The registry of the pattern of phosphors and the shadow mask is accomplished according to the invention with a precision made pos-sible by the use of the six-point precision indexing means, and the location of the patterns on the faceplate is made possible by the use of the a-b-c referencing of the faceplate and the faceplate locating fixture.
Patent CA-1324949-C (CA)
Inventor: TENN TREVOR I
IPC: F23G7/06
Filed: 1988-12-22
Granted: 1993-12-07
Abstract: ABSTRACT            Injection Nozzle A process and apparatus for the combustion in an incineration device of noxious noncondensable gases produced in a pulp mill comprising the use of a novel injection nozzle, said nozzle comprising a tubular conduit means, an insulating inner jacket surrounding said conduit means, and an outer cooling jacket surrounding said inner jacket. Increased nozzle life is obtained.
Patent CA-1296846-C (CA)
Title: Crib cover
Inventor: LAMANTIA MARK A
IPC: A47D7/00
Filed: 1989-01-12
Granted: 1992-03-10
Abstract: BJ/GLG/mc ABSTRACT     A cover for a crib or playpen includes a tent-like canopy having a pair of panels extending downwardly from two opposite ends which lie against the inside of a pair of sides of the crib or playpen and are tied in place by straps which extend about the sides.  The cover leaves the other sides of the crib or playpen exposed.  Ties are provided along the other side edges of the canopy for securing those edges to the tops of those sides.
Patent CA-1332167-C (CA)
Title: Carbonaceous adsorbents from pyrolyzed polysulfonated polymers
Inventor: MAROLDO STEPHEN G
IPC: C01B31/02
Filed: 1989-01-16
Granted: 1994-09-27
Abstract: PATENT APPLICATION OF                      Stephen G. Maroldo Noah Borenstein and William R. Betz for CARBONACEOUS ADSORBENTS FROM PYROLYZED        POLYSULFONATED POLYMERS     Abstract of the Disclosure Carbonaceous adsorbant particles having multimodal pore size, including micropores and macropores, with improved adsorptive and separative properties, are prepared by partial pyrolysis or polysulfonated macroporous precursor resins, said resins being in turn derived from macroporous poly(vinylaromatic) resins. The particles may be further treated by activating with reactive gases or by functionalization.                             -i-
Patent CA-1327385-C (CA)
Inventor: TOMPKINS JOHN C
IPC: H02J7/02
Filed: 1989-01-17
Granted: 1994-03-01
Abstract: ABSTRACT    A rechargeable, emergency, portable battery charger for starter motor storage batteries.   The device includes a sealed  lead  acid battery as  a  source of energy.   An oscillator circuit connected to a transformer generates 3 V in its secondary.   This voltage is rectified and added in series to the 12 V of the self-contained battery to provide charging current  to  a  starter motor  storage  battery.          Connection is made via a cigarette lighter socket in the disabled vehicle.   Current is limited to approximately 4 amps  so as to limit heat dissipation to a safe level.          Furthermore,  a voltage sensing circuit determines if the voltage  of  the  starter  storage  battery  is  below approximately 6 V or is shorted to ground.  In either case, output current is further limited to the point of cut-off.          Recharging the self-contained battery is made possible by a switch that connects the cigarette lighter of a running car directly to the self-contained battery of the charger.  This switch also permits connection of any 12 VDC device directly to the self-contained battery.  An ammeter monitors current flow in this power pack mode as well as the charging and recharging modes.  A light emitting diode circuit indicates when the charging of the starter motor storage battery is complete.
Patent CA-1320950-C (CA)
Title: Macrolide compounds
Inventor: RAMSAY MICHAEL V J
IPC: A23K20/195
Filed: 1989-01-27
Granted: 1993-08-03
Abstract: ABSTRACT MACROLIDE COMPOUNDS       Compounds are described of formula (1)                 (1) and salts thereof wherein R1 is a methyl, ethyl or isopropyl group; R2 represents a hydrogen atom ox a group OR4 (where OR4 is a hydroxyl group or a substituted hydroxyl group having up to 25 carbon atoms) and R3 represents a hydrogen atom, or R2 and R3 together with the carbon atom to which they are attached represent  >C=CH2,  >C=0 or  >C=NOR5 (where R5 is a hydrogen atom or a C1-8 alkyl group and the group >C=NOR5 is in the E configuration).       These compounds may be used for controlling insect, acarine, nematode or other pests.
Patent CA-1323422-C (CA)
Title: Optical recording
Inventor: KEENS ANDREW P
IPC: G11B7/135
Filed: 1989-02-03
Granted: 1993-10-19
Abstract: ABSTRACT OF THE DISCLOSURE      A single channel optical recording system is described, which system does not require a second rotating optical element.  The system uses focus error correction components located outside the rotating drum.  Light transmitted to and from the drum is at all times axially symmetric, thus circumventing the problem of image rotation.  Lateral error correction takes place entirely within the drum, requiring only the transmission of d.c. electrical power across the rotating interface.  Preferably the physical distribution of optical components within the drum is symmetric to ensure mechanical balance.  A dual beam tracking system to write data in compact form in a single-channel optical tape recorder is also described.  The tracking is achieved in the drum and without any additional optical elements.  Passive or active alignment of the two beams before entering the drum is achieved using an extended anamorphic prism pair and without introducing additional optical surfaces into the beam path.
Patent CA-1329254-C (CA)
Inventor: DHIRENDRA ROY C
IPC: B60R11/00
Filed: 1989-03-07
Granted: 1994-05-03
Abstract: ABSTRACT OF THE DISCLOSURE     Resilient Electrical Component Housing Bracket A unitary resilient bracket (1) for mounting a plurality of electrical component housings (70, 76) to a mounting surface (80) in a space saving vertical arrangement using a minimum of individual fasteners while allowing access to the components located within the housings.      Bracket (1) includes keyways (21, 23, 25, 27, 29) for accommodating a multiplicity of keys (74, 78) located on housings (70, 76 respectively) in combination with housing retaining members (60) and flange lock (4) interacting with flange (72) to secure the housings to the bracket.      Bracket (1) is secured to mounting surface (80) by fasteners passing through fastening flanges (2) and a primary lock tab (62) which is disposed in a receiving slot (82) located in mounting surface (80).
Patent CA-1299032-C (CA)
Title: Closed cell foam seals for automotive body seams, method and apparatus for making same
Inventor: TURNER HERMAN E JR
IPC: F16J15/14
Filed: 1989-03-08
Granted: 1992-04-21
Abstract: CLOSED CELL FOAM SEALS FOR AUTOMOTIVE BODY SEAMS METHOD AND APPARATUS FOR MAKING SAME      Abstract of the Disclosure Method and apparatus are disclosed for sealing automotive body seams by forming directly in place a closed cell foam structure with a multitude of fine cells containing gas thereby sealing the body against moisture, dust and noise intrusion.
Patent CA-1329629-C (CA)
Title: Separating sheetlike structures from piles
Inventor: MELZER JAROSLAV
IPC: B65H3/46
Filed: 1989-03-16
Granted: 1994-05-17
Abstract: Abstract of the Disclosure:  Individual sheetlike struc-tures are efficiently lifted from a pile by means of a vacuum lifter and deposited again at a processing sta-tion, the pile including as an alternate interlayer a sheet of air impermeable material.
Patent CA-1298651-C (CA)
Title: Antenne a balayage electronique
Inventor: LENORMAND REGIS
IPC: H01Q21/00
Filed: 1989-03-17
Granted: 1992-04-07
Abstract: L'invention concerne une antenne à balayage électronique comprenant un réseau de sources élémentaires, un réflecteur focalisant l'énergie et une électronique d'alimentation et de commande. Le réseau est situé dans la zone focale du réflecteur, l'électronique d'alimentation et de commande comprenant plusieurs circuits d'atténuateur et de déphasage pilotés par une unité de commande, ces circuits étant reliés en sortie à au moins un combineur. La présente invention peut être appliquée notamment au domaine des télécommunications spatiales.
Patent CA-1335972-C (CA)
Inventor: SMITH GARY W
IPC: C25D5/02
Filed: 1989-03-23
Granted: 1995-06-20
Abstract: An electroplating apparatus for rapidly depositing a metal onto a selected surface of a workpiece, which appara-tus comprises an anode having an active surface with a se-lected shape to combine with the selected surface of the workpiece to define an elongated gap of at least about .050 inches, means for supporting this anode in a fixed position to define the elongated gap; solution circulating means for forcing an electroplating solution with metal cations through the gap in a generally closed path at a velocity to exchange electroplating solution in the gap at a rate of at least 25 times per minute; and, means for applying current flow between the selected workpiece surface and the active surface of the anode through the gap at a current density in excess of 2.0 amperes/in2.  The invention also involves the method of using this apparatus to rapidly deposit metal, such as nickel, onto the inner cylindrical surface of a bore on a complex part such as an aircraft landing gear forging.
Patent CA-1305922-C (CA)
Title: Method of myocardial imaging
Inventor: MOHIUDDIN SYED M
IPC: A61K49/00
Filed: 1989-04-18
Granted: 1992-08-04
Abstract: 68299-99 (S) ABSTRACT OF THE DISCLOSURE Disclosed is a new use of adenosine; functional adenosine receptor agonists which include 1-methyl-2-phenylethyl-adenosine, 5-ethyl carboxamide adenosine, cyclopentyl adenosine and 2-chloro adenosine; metabolic precursors or by-products of adenosine which include adenine and inosine; and phosphorylated derivatives of adenosine including adenosine monophosphate, adenosine diphosphate and adenosine triphosphate, as a coronary artery dilating agent in conjunction with various invasive and noninvasive diagnostic techniques to detect the presence or assess the severity of vascular disease in humans. The diagnostic techniques include for example myocardial perfusion imaging using adenosine or its related substance.
Patent CA-1298637-C (CA)
Inventor: MOORE ROBERT H
IPC: G01C19/66
Filed: 1989-04-20
Granted: 1992-04-07
Abstract: ABSTRACT         A method and apparatus for aligning the light path of a square ring laser gyroscope wherein the alignment method includes directing two input beams of light into the cavity of the gyroscope.  Next, the input beams are intercepted prior to their incidence upon the input mirror with a pair of polarizers.  Subsequently, the extinction ratios of the first and second output beams of light are measured at the exit mirror.  The curved mirrors of the gyroscope are then translated in opposite directions and equal amplitude so as to change the extinction ratios of the output beams.  Such translations are repeated until the measured extinction ratios are substantially equal.
Patent CA-1320252-C (CA)
Title: Measuring the straightness of tubes
Inventor: LUEBKE JOHN T
IPC: G01B7/28
Filed: 1989-07-19
Granted: 1993-07-13
Abstract: ABSTRACT OF THE DISCLOSURE      An apparatus for use in measuring the straightness of a tube includes a flat support surface made of electrically insulative material and a plurality of strips of electrically conductive material oriented parallel to one another on the support surface.  The strips are substantially uniform in shape and thickness, and a layer of dielectric material covers each of the strips of conductive material.  The layers of dielectric material are of uniform thickness along the length of the strips and are adapted to support a tube to be tested for straightness so that a capacitor is formed by each of the strips and the tube.  An oscillators is provided for generating pulses each having a pulse width proportional to the capacitance between at least one of the strips and the tube and representative of the size of gap between the at least one strip and the tube.  These pulse widths are measured and compared with a preset value representative of a limit pulse width in order to determine the acceptability of the tube straightness.  A method of measuring the straight-ness of a tube by measuring capacitances along the length of the tube as it rolls along a support surface is also disclosed.