baber/WOPTO huggingface dataset:
Patent CA-2075127-C (CA)
Title: Integrated circuit sampled-and-hold phase detector with integrated current setting resistor
Inventor: ICHIHARA MASAKI
IPC: H03D13/00
Filed: 1992-07-31
Granted: 1997-05-20
Abstract: A sample-and-hold phase detector comprises a first charge/discharge circuit for charging a first storage capacitor with a constant current for a duration corresponding to a phase difference between an input pulse and a reference pulse and discharging it after it is sampled. A first sample-and-hold circuit samples the voltage developed in the first storage capacitor to represent the phase difference between the input pulse and the reference pulse. A second charge/discharge circuit periodically charges a second storage capacitor with a constant current for a fixed time interval and discharges it after it is sampled. A second sample-and-hold circuit samples the voltage developed in the second storage capacitor. A current setting circuit, in which a current setting resistor is provided, is connected to both charge/discharge circuits to determine their constant charging currents. A differential integrator provides differential integration on the voltage from the second sample-and-hold circuit with respect to a reference voltage to control the current setting circuit in a feedback loop.
Patent CA-2076201-C (CA)
Title: Shielding gases for arc welding
Inventor: HARVEY GRANT
IPC: B23K9/16
Filed: 1992-08-14
Granted: 2000-05-16
Abstract: A shielding gas far flux cored arc welding. The specific gas combination is intended to promote significantly lower fume emission levels while providing equivalent or better welding performance.
Patent CA-2079608-C (CA)
Title: Time indicating device
Inventor: BOND ANDERS
IPC: G04B45/00
Filed: 1992-10-01
Granted: 2002-12-10
Abstract: A device for indicating time comprises means arranged to display the number of equally large time increments of a predetermined size, for instance 15 minutes, remaining until a predetermined occurrence is intended to take place.
Patent CA-2082768-C (CA)
Inventor: KAIRI MATTI
IPC: B32B7/03
Filed: 1992-11-12
Granted: 2003-05-06
Abstract: The invention relates to a diagonal veneer laminate structure consisting of several superposed veneer layers (1a, 1b, 1c...) glued to each other. In each veneer layer (1a, 1b, 1c...), the main grain (S1 or S2) is disposed to form a crossing angle (.alpha.) with the main grain (S2 resp.      S1) of immediately adjoining veneer layers (1b; 1a and 1c) which is in the range of 3° to 60°.
Patent CA-2089612-C (CA)
Title: Downfired boiler having vertical heat transfer tubes
Inventor: MOSCONE ROBERT T
IPC: F24H1/28
Filed: 1993-02-16
Granted: 2004-01-06
Abstract: A water-heating boiler of the tube-shell type is designed, so that the heat transfer tubes are vertically oriented. During movement of the hot combustion gases, from the large combustion tube into the smaller heat transfer tubes, the directional change in the gas, is augmented, by a changing effect of gravitational forces on the combustion gas stream. Inertia effects, in combination with velocity changes, produce a relatively high turbulence in the flowing combustion gas, with a corresponding increase in the scrubbing effect on the heat transfer tube walls.
Patent CA-2090232-C (CA)
Title: Silver recovery element and method
Inventor: MC GUCKIN HUGH GERALD
IPC: G03C5/31
Filed: 1992-06-25
Granted: 1997-02-25
Abstract: A silver recovery element (10) for treating a photographic developer solution containing silver ions comprises a substrate (20) having thereon a hydrophilic colloid layer containing physical development nuclei. The invention also comprises a process for recovering silver from a photographic developer solution containing silver ions, such process comprising contacting the solu-lion with the silver recovery element. The contacting is for a time sufficient to reduce the concentration of silver in the solution to a desired level. The recovery element and process for its use are useful in treating a a seasoned photographic developer solution containing silver ions.
Patent CA-2092456-C (CA)
Title: Multiparameter ecm and control therefor
Inventor: ARCHER WILLIAM R
IPC: F24F11/00
Filed: 1993-03-25
Granted: 2001-05-15
Abstract: A system which drives a component of a heating, ventilating, and/or air conditioning (HVAC) system in response to a system control signal such as a temperature signal provided by a thermostat. The system include s a motor having a stationary assembly and a rotatable assembly.      The rotatable assembly is in magnetic coupling relation to the stationary assembly and as in driving relation to the component. The motor drives the component in response to a control signal generated by a microprocessor. The micro-processor is responsive to parameters representative of the system and to the system control signal. The parameters are stared in a memory and are defined in response to a parameter select signal. The control signal provided by the micro-processor controls the sped grad torque of the motor. The system further includes an instruction memory for storing instructions controlling the operation of the microprocessor.
Patent CA-2096015-C (CA)
Title: Process for manufacturing reinforced duroplastic pipes in a centrifugal process and installation for carrying out the process
Inventor: RATHEISER REINHART
IPC: B29C41/36
Filed: 1992-10-20
Granted: 2000-08-08
Abstract: In order to eliminate material distribution inaccuracies, which are inevitable when tubes are centrifugally cast with known devices, a new process and plant are disclosed. The plane has at least two cylindrical centrifuging drums (1) that serve as matrices and an injection carriage (12), provided with a charging arm (11), movable in two mutually perpendicular directions. The novelty of the invention consists of mounting the carriage on a frame (9) movable in a transverse direction to the axis of the matrix (10), on the bottom (8) of tire housing; and the carriage can move on the frame transversely to the travelling direction of the latter. The carriage has a sand working silo (13) of relatively small volume linked by a first hope (19) to a large silo (20) out of which it is practically continuously refilled by pneumatic transport. Both silos are provided with weight measurement cells connected with a calculating, and controlling device (30) which controls the supply of sand, resin and glass fibers according to a programme that is specific for each tube design.
Patent CA-2098148-C (CA)
Inventor: BUENDIA JEAN
IPC: C07J71/00
Filed: 1993-06-10
Granted: 2004-05-04
Abstract: The invention relates to a new process for preparing the compounds of formula (I): <IMAGE> in which the rings A and B represent a 3-keto- DELTA <4>-6-R3, optionally in a form protected in position 3, or 3-keto- DELTA <1,4>-6-R3, R is methyl or -CH2OR' where R' is hydrogen or an ether or ester residue, R1 and R2 form a  beta  epoxide, a second bond, or R1 is hydrogen, ketone, or hydroxy in  alpha  or  beta , optionally in etherified or esterified form, and R2 is hydrogen, or R1 is hydrogen and R2 is  alpha -hydroxy, or R1 is  beta -hydroxy optionally etherified or esterified and R2 is a fluorine or a bromine in  alpha , and R3 is hydrogen, fluorine or methyl in  alpha  or beta , according to which a  DELTA <16(17)> derivative is treated with a methylating agent, followed by intermediate hydrolysis and the enol thus obtained is oxidised by molecular oxygen in the presence of an appropriate reducing agent. The compounds (I) are known anti-inflammatory agents or possible precursors.
Patent CA-2103973-C (CA)
Title: Ethylene recovery in direct-oxidation ethylene oxide processes
Inventor: PENDERGAST JOHN G
IPC: C07D301/32
Filed: 1993-08-12
Granted: 1998-11-03
Abstract: A direct-oxidation ethylene oxide process of the type comprising a) reacting a feed gas stream including ethylene and a commercially-pure oxygen in one or more reactors and b) absorbing out ethylene oxide from the product stream from the one or more reactors in a first absorption zone, unreacted ethylene is recoverd from an ethylene-rich argon purge gas stream via an absorber and a stripper in combination, the recovered ethylene is recycled to the feed gas stream, and an ethylene-lean argon purge gas stream is purged.
Patent CA-2106320-C (CA)
Inventor: EHRSTROM JEAN-CHRISTOPHE
IPC: C22F1/00
Filed: 1993-09-16
Granted: 2003-11-18
Abstract: Alloy of the 7000 series and a specific heat treatment with a view to the manufacture of hollow bodies under pressure and, in particular, of metal bottles for compressed gases. The alloy contains, in weight %:  6.25 </= Zn </= 8.0  Mn </= 0.20  1.2 </= Mg </= 2.2  Ti </= 0.05  1.7 </= Cu </= 2.8  0.10 </= Zr </= 0.25  others, each </= 0.05  Fe </= 0.20  '' total </= 0.15  Si+Fe </= 0.40  remainder: Al  Cr </= 0.05. The final annealing is preferably performed in 3 stages:     - 1st stage between 105 and 120 DEG C for 6 to 12 h   - 2nd stage: between 170 and 190 DEG C for 0.5 to 20 h - 3rd stage: between 105 and 120 DEG C for 12 to 36 h.
Patent CA-2108049-C (CA)
Inventor: BENSON CARL L
IPC: A61M5/31
Filed: 1993-10-08
Granted: 1999-11-30
Abstract: A needle stopper for use with a hypodermic syringe such as an arterial blood gas syringe includes a shell having a bottom, an open top and a needle-receiving chamber therebetween. The bottom is configured to support the needle stopper in an upright orientation. The needle-receiving chamber is dimensioned to receive needle cannula and to engage a needle hub connected to the cannula. The chamber is at least partly filled with a sealing material that can occlude the tip of a needle cannula. The upright orientation of the needle stopper enables one-handed insertion of the needle cannula into the needle-receiving chamber for occluding the needle tip. Engagement of the needle stopper with the needle hub enables safe and convenient separation of the needle hub and cannula from the syringe barrel for disposal. The tip of the syringe barrel then may be capped and sent to a laboratory for analysis of fluids therein.
Patent CA-2110312-C (CA)
Title: Two-layer sheets of thermoplastic elastomers
Inventor: UCHIYAMA AKIRA
IPC: C08L23/16
Filed: 1993-11-30
Granted: 1999-09-07
Abstract: ABSTRACT    Provided herein is a two-layer sheet of thermoplastic elastomer comprising a skin layer [I] composed of a partially crosslinked thermoplastic elastomer containing 90-40 parts by weight of an .alpha.-olefin copolymer rubber (A) and 10-60 parts by weight of a polyolefin resin, with the proviso that the total sum amount of (A) and (B) is 100 parts by weight, and a back surface layer [II] composed of a non-crosslinked  thermoplastic elastomer containing 80-30 parts by weight of an .alpha.-olefin copolymer rubber (A) and 20-70 parts by weight of a polyolefin resin (B), with the proviso that the sum total amount of (A) and (B) is 100 parts by weight.    The two-layer sheets of thermoplastic elastomer thus obtained in accordance with the present invention have such an effect that they are capable of providing molded bodies excellent in vacuum forming properties and also low in surface glossiness.
Patent CA-2114120-C (CA)
Inventor: BUCKSBEE JAMES H
IPC: B61F5/30
Filed: 1992-07-23
Granted: 2000-10-31
Abstract: An improved service-life, low-profile, elastomeric mounting (18) for placement between the side-frame-pedestal-jaw roof (22) and the axle-box or axle-bearing adapter crown (20) on a three-piece, railroad-car truck. The mounting (18) minimizes the damaging compression induced edge strains resulting from the cocking motions imposed on the elastomeric mounting (18) during railroad car braking and rocking. The addition of shims (28), specialized elastomer contouring (40), graded thicknesses (t1;t2) of the elastomeric layers (30, 31) in combination with high shape factor of the elastomeric layers (30, 31) allows the compression induced edge strains to be significantly reduced and results in extended service-life of the elastomeric mounting (18).
Patent CA-2118541-C (CA)
Title: Appareil servant a choisir des conducteurs d'appareils d'eclairage, et methode permettant de cabler rapidement lesdits appareils d'eclairage
Inventor: MARDER WILLIAM WADE
IPC: H02G3/20
Filed: 1994-10-20
Granted: 1999-12-28
Abstract: Des connecteurs enfichables destinés principalement à connecter des appareils d'éclairage dans la circuiterie du système, les connecteurs comprenant des mécanismes de sélection qui permettent la sélection d'un conducteur ou de conducteurs directs nécessaires à la mise sous tension des appareils d'éclairage. Les connecteurs de l'invention permettent la sélection d'un circuit spécifique sur le chantier plutôt que le précâblage d'un appareil d'éclairage à un circuit spécifique lors du montage en usine, un appareil d'éclairage donné étant ensuite rapidement installé en branchant le connecteur dans une prise de câbles électriques s'étendant entre les appareils d'éclairage dans une installation. Le mécanisme de sélection de l'invention agit principalement pour modifier la configuration de câblage de l'appareil d'éclairage associé, le pied ou les pieds directs de l'appareil étant mobiles pour s'adapter à un circuit spécifique souhaité. L'invention englobe également l'utilisation de l'appareil de l'invention dans une méthode de câblage rapide d'appareils d'éclairage à une circuiterie d'un système, entraînant ainsi des économies de coût de main-d'uvre et de revient. Alors que l'invention est particulièrement utile pour le raccordement des appareils d'éclairage DHI à la circuiterie du système, les connecteurs de l'invention peuvent également servir dans les systèmes utilisant de l'éclairage incandescent et fluorescent ainsi que pour d'autres charges électriques appropriées.
Patent CA-2121840-C (CA)
Inventor: SUTHERLAND THOMAS LANGLEY
IPC: A47L23/26
Filed: 1992-10-26
Granted: 1999-02-23
Abstract: Entrance matting includes a flexible base layer (12) and a flexible upper layer (14) comprising spaced, upstanding strips (16) and defining slots (18) therebetween. Strips of carpet and the like (20) are fixed in the slots (18). The matting is located on a floor at a building entrance with the strips (16, 20) perpendicular to the direction of traffic over the matting for use in scraping dirt and talking moisture from the feet of people entering the building.
Patent CA-2122561-C (CA)
Inventor: KARAM GEORGES
IPC: H04L25/06
Filed: 1994-04-29
Granted: 1999-02-09
Abstract: An  adaptive  threshold  decision  device  for  multistate modulation produces, at a symbol frequency, symbols dependent on the levels of a received demodulated baseband signal.   It comprises a voltage divider, an adder for adding the baseband signal to a midpoint voltage which is substantially the mean of lower  and  upper  voltages  applied  to  the  terminals  of  the voltage  divider  to  produce  a  transposed  signal,  plural comparator  means  for  comparing  the  transposed  signal  with plural voltages at terminals of the voltage divider thereby producing comparison result signals,  an encoder for deriving control words according to the comparison result signals, and control means for respectively and independently controlling at least the lower and upper voltages according to the control words.
Patent CA-2124223-C (CA)
Inventor: CREERON RICHARD F
IPC: B60K11/02
Filed: 1994-05-24
Granted: 1998-11-17
Abstract: The present invention features a kit and method for replacing used antifreeze/coolant in the cooling system of an automobile.  The kit is composed of inexpensive parts, consisting of: (1) a plastic, flexible capture tank; (2) a flexible plastic drain sleeve for directing fluid from a cooling system hose to the capture tank: (3) a funnel for introducing fluids into the cooling system via said radiator; (4) a hose adaptor for placement of a funnel into the hose line; (5) differently-sized hose menders for re-establishing a severed radiator hose line; and (6) metal clamps for tightening the severed hose portions about one of the appropriately sized hose menders.
Patent CA-2124490-C (CA)
Inventor: FULLER TIMOTHY J
IPC: G03G9/08
Filed: 1994-05-27
Granted: 1999-08-03
Abstract: Disclosed is a process for preparing a liquid or dry electrophotographic developer comprising: (a) forming a melt mixture comprised of a polymer resin or resins, a colorant, a charge director, and a nonaqueous solvent to obtain a first suspension of colored polymeric particles with a volume average diameter of from about 5 to about 100 microns; and (b) homogenizing with a dairy piston homogenizer said first suspension under pressure of from about 100 to about 500 Bars to obtain a second suspension containing colored polymeric particles with a volume average diameter of from about 0.1 to about 5 microns.
Patent CA-2127207-C (CA)
Title: Blood culture sensor station utilizing two distinct light sources
Inventor: BERNDT KLAUS W
IPC: C12M1/34
Filed: 1994-06-30
Granted: 2000-11-21
Abstract: A method for determining whether a particular sample vial has bacterial growth includes the steps of introducing a first light into the sample vial and measuring the intensity of the reemerging light. One then introduces a second light which is different from the first light and has either a different wavelength, or is introduced at a different location than the first light. The reemerging intensity from the second light is also measured. A ratio quantity is calculated based on the two reemerging intensities, and the calculated ratio is compared to expected ratios for both positive and negative samples. It has been found that a comparison of the reemerging light intensities provides a very good indication of whether a particular sample is a positive or negative sample.  Various methods and formulas for calculating the ratios may be utilized.      Graphs associated with the particular methods and formulas are developed experimentally to allow one to compare a particular calculated ratio value to expected values for positive and negative cultures.
Patent CA-2130071-C (CA)
Inventor: SIMARD MARCEL
IPC: F16K27/00
Filed: 1994-08-12
Granted: 2001-04-10
Abstract: Ce joint de forme circulaire ayant des rainures empêchant l'eau, le silt ou tout autre élément non désirable, de s'infiltrer à l'intérieur de la cheminée de la boî te de vanne enveloppant la vanne d'opération du réseau d'aqueduc municipal. L'espace ent re la partie interne de la cheminée à la base et le boulon carré supérieur de la vanne, doit être tel que l'outil servant à opérer la vanne, puisse s'insérer entre ces deux parties e t qu'aucun corps non désirable puisse empêcher le fonctionnement. Le joint d'étanchéité pour boîte de vanne étant situé autour du couvercle et appuyé sur la partie, interne supérieure de la cheminée, étanche la boîte de vanne municipale.
Patent CA-2134108-C (CA)
Title: In-line foam generator for hydrocarbon recovery applications
Inventor: SOUTHWELL GEORGE P
IPC: B01F5/06
Filed: 1993-05-25
Granted: 1996-12-31
Abstract: A foam generator is provided for in-line installation within a surface tubing network. The generator has a foaming cham-bel (10) with a plurality of permeable screens (52) positioned in series along a continuous flowpath through the foaming chamber. The screens are separated from one another by spacers (76, 78) that define the radial boundaries of the flowpath. According to one embodiment, the screens and spacers are mounted in a cartridge that fits into the foaming chamber to maintain proper screen alignment and facilitate removal of the screens from the chamber for maintenance. In an alternate embodiment, the screens and spacers are mounted directly in the chamber. In both embodiments, the screens are aligned orthogonal to the flowpath enabling the generator to produce a properly textured foam from shear-sensitive fluids with relatively little shear degradation. The foaming chamber exhibits a substantially uniform incremental pressure drop along any segment of its length and a minimum total pres-sure drop across its entirety as a function of the number of screens in the foaming chamber, the size and pattern of the openings through the screens, and the cross-sectional area of the flowpath delineated by the spacers.
Patent CA-2134432-C (CA)
Title: Infrared heated differential thermal analyzer
Inventor: DANLEY ROBERT L
IPC: G01N25/20
Filed: 1994-10-26
Granted: 1998-11-17
Abstract: The present invention is an infrared-heated differential thermal analyzing instrument.  The instrument uses an actively cooled heat sink, and a heat flow restricting element connecting the heat sink to a differential thermal analysis sensor.  An IR heater directs IR radiation onto the lateral surfaces of the heat sink and the heat flow restricting element.  These lateral surfaces are polished and coated with a high IR reflectance coating, so that heat absorption is minimized.  The IR heater preferably uses either elliptical or parabolic mirrors to focus the IR radiation onto the heat sink and the heat flow restricting element.         A second embodiment of the invention uses two heat sinks, and two heat flow restricting elements, mounted on either side of the differential analysis thermal sensor.
Patent CA-2136788-C (CA)
Inventor: BRITTON THOMAS CHARLES
IPC: C07F7/18
Filed: 1994-11-28
Granted: 2005-01-25
Abstract: A process for preparing 2,2-difluoroketene silyl acetals and .alpha.,.alpha.-difluoro-.beta.-silyloxy-1,3-dioxolane-4-propanoic acid esters using these acetals.
Patent CA-2142603-C (CA)
Title: Traitement de surfaces, de type verre, de substrats compatibles avec les polymeres vinyliques
Inventor: GIRGIS MIKHAIL M
IPC: C03C25/32
Filed: 1993-08-13
Granted: 2001-04-03
Abstract: Composition de traitement chimique, surfaces traitées du type verre, et substrats compatibles avec un polymère à addition vinylique présentant de telles surfaces traitées, la composition de traitement comprenant au moins cinq constituants non aqueux. Ces constituants comprennent, en pourcentage en poids du constituant non aqueux, les éléments suivants: au moins un amidon, en une teneur comprise entre environ 1 et un peu plus de 50 environ, au moins une cire en une teneur telle qu'elle présente un rapport cire/amidon allant d'environ 0,9 pour 1 à une teneur excédentaire de cire ou des teneurs supérieures à 1 pour 1; au moins un lubrifiant cationique en une teneur comprise entre environ 3 et environ 20; au moins un agent de couplage organométallique en une teneur comprise entre environ 1 et environ 5; au moins un matériau tel qu'un second polymère filmogène compris entre environ 1 et environ 15, mais dont la teneur est toujours inférieure à celle de la cire, et/ou des produits de condensation de polyamides et d'acides gras en une teneur comprise entre environ 1 et environ 20 % en poids des constituants non aqueux, et/ou un promoteur d'adhésion des polymères tel que des esters d'anhydrides et/ou d'acides carboxyliques tels que: adipates, sébacates, azélates, esters phtaliques, esters trimellitiques et esters d'acide dicarboxylique cyclique et/ou aliphatique, présents en une teneur ne dépassant pas environ 20 % en poids des constituants non aqueux. Dans cette formulation, la teneur en cire est toujours supérieure à la teneur en chaque constituant non aqueux individuel autre que l'amidon, tandis que, par rapport à l'amidon, elle peut présenter un rapport légèrement inférieur à 1 pour 1. Le traitement chimique est appliqué à des surfaces du type verre, par exemple du verre même, le substrat pouvant se présenter sous n'importe quel profil ou forme, tel que sous forme de fibres présentant une très bonne adhérence à des polymères matriciels tels que des polymères d'addition vinylique et leurs plastisols ou organosols, pour produire des substrats ou éléments de renforcement polymères destinés à l'encapsulation, l'imprégnation ou le revêtement.