baber/WOPTO huggingface dataset:
Patent CA-2021209-C (CA)
Title: Burners for gas appliances
Inventor: MCDONALD BRIAN A
IPC: F23D14/58
Filed: 1990-07-16
Granted: 1993-04-06
Abstract: ABSTRACT    In a metal burner for gas appliances, this invention can create  detailed  flame  patterns  with  a  minimum  of  hole punching. The burner can vary the flame height, width and location of the flames by varying the size of only a few slots. In this invention, a piece of sheet metal with a series of slots that may be inches in length and may vary in size is used as an overlay and attached to a piece of perforated sheet metal stock with a plurality of small uniformly spaced holes. As few as ten of these slots may contain in excess of 1,000 gas outlet ports. This lamination of metal forms part of the body  of  the  burner  which  is  an  enclosed  chamber.  For additional flame control, gas is directed into the burner through a round metal tube which terminates directly in front of a contoured dispersement fitting of approximately the same diameter  of  the  tube.  The  orientation  of  this  tube  and dispersement  fitting affects the dispersement  of the gas inside the burner resulting in changes in flame height.
Patent CA-2023285-C (CA)
Title: Induction heating apparatus and method
Inventor: CIGNETTI NICOLAS P
IPC: B22D41/015
Filed: 1990-08-15
Granted: 1995-07-18
Abstract: An induction melting vessel comprising a refractory crucible having an opened top end and closed bottom end, with a substantially continuous side wall.  A substantially continuous metallic shell surrounds and generally conforms to the side wall and extends for at least a majority of the height of the side wall from the bottom end to the top end. The shell has a bottom end corresponding to the bottom end of the crucible and a top end corresponding to the top end of the crucible.  A portion the shell adjacent the top end thereof and a portion of the shell adjacent the bottom end thereof have discrete physically integral but electrically isolated regions therein for limiting the flow of electric current in the shell.
Patent CA-2023987-C (CA)
Inventor: LENTZ CARL A
IPC: F16H61/02
Filed: 1990-08-24
Granted: 1993-07-20
Abstract: ADAPTIVE POWERED DOWNSHIFT CONTROL    OF AN AUTOMATIC TRANSMISSION            Abstract of the Disclosure In an automatic transmission, clutch-to-clutch powered downshifting is controlled by filling the on-coming clutch at a low pressure while ramping down the off-going clutch pressure until turbine speed is pulled up due to off-going clutch slippage, and then increasing the off-going pressure stepwise to compensate the change from static to dynamic coefficients of friction.  Then the on-coming pressure is gradually ramped up and a closed-loop profile control period starts wherein the slip speed of the on-coming clutch is measured and controlled to a slip speed profile by controlling the off-going clutch pressure.  When synchronization of the on-coming clutch is first detected, a closed-loop sync control period starts wherein the off-going pressure is controlled to minimize the slip and the on-coming pressure is ramped up at a steeper rate to begin clutch engagement during the sync control period. Adaptive control is accomplished for the initial on-coming pressure by an iterative process which decreases that pressure stepwise until flare occurs and then increases the pressure to stop the flare and repeating the changes in smaller steps to approach the flare condition.  Initial off-going pressure is modified when early slip or late slip of the off-going pressure is detected.  A modification of off-going pressure step value is effected when the final pressure in the closed-loop period is greater or smaller than the initial pressure.  The modifications are targeted to fully correct the respective conditions.
Patent CA-2026015-C (CA)
Title: Polymeric compositions and components therefore
Inventor: MCGRAIL PATRICK TERENCE
IPC: C08G59/30
Filed: 1990-09-24
Granted: 2002-01-01
Abstract: PURPOSE:To obtain the titled composition having excellent water-resistant adhesive strength and wood breakage ratio, by adding specific amounts of an epoxy resin and optionally an epoxy resin hardener to a formaldehyde resin such as melamine-phenol-formaldehyde resin. CONSTITUTION:The objective composition is produced by compounding (A) 100pts.wt. of a formaldehyde resin selected from melamine-formaldehyde resin, urea-melamine-formaldehyde resin, melamine-phenol-formaldehyde resin, and urea-melamine-phenol-formaldehyde resin with (B) 1-20pts.wt. of an epoxy resin (e.g, bisphenol A glycidyl ether, etc.) and optionally (C) 0-10pts.wt. of an epoxy resin hardener (preferably an amino compound such as diethylenetriamine, etc.).
Patent CA-2027253-C (CA)
Title: Editing text in an image
Inventor: KOPEC GARY E
IPC: G06T1/00
Filed: 1990-10-10
Granted: 1997-12-16
Abstract: Character level text editing is performed on an image without recognizing characters, by operating on a character-size array obtained from a two-dimensional array defining an image region. A processor, in response to a request for a text editing operation, accesses an edit data structure that includes the image region array and performs the operation. The character-size array is obtained by dividing the image region array when necessary. An image region array that includes more than one line is divided along interline spaces. An image region array that includes one line is divided along intercharacter spaces. Character-size arrays are divided out of larger arrays by finding connected component bounding boxes, and then determining from the bounding boxes whether the connected components are likely to form a character. If so, the connected components are used to obtain the character-size array and spatial data about position, size, and shape of the character. Smaller arrays and spatial data can replace a larger array in the edit data structure. Smaller arrays are obtained only as necessary to perform a requested text editing operation, and if the edit data structure is not otherwise modified, obtaining a smaller array does not necessitate redrawing of the display. In addition to character level editing, a text editing operation can be performed on a sequence of arrays, such as a word, line, or a sequence that begins on one line and ends on another. The spatial data can be used to position arrays after insertion or deletion, to advance a cursor through the text, and to justify a line of arrays. A character-size array can be assigned to a keyboard key, and the key may then be used to insert that array into the text or to request a search for otherarrays matching that array.
Patent CA-2042640-C (CA)
Title: Barbiturate assay, tracers, immunogens, antibodies and kit
Inventor: ADAMCZYK MACIEJ
IPC: G01N33/94
Filed: 1991-05-15
Granted: 2004-07-20
Abstract: The present invention is directed to a fluorescence polarization immunoassay for barbiturates, to the various components needed for preparing and carrying out such an assay, and to methods of making these components.      Specifically, tracers, immunogens and antibodies are disclosed, as well as methods for preparing them and a reagent kit containing them. The tracers and the immunogens are made from substituted barbiturate compounds. A fluorescein moiety is included in the tracer, while a poly(amino acid) forms a part of the immunogen. The assay is conducted by measuring the degree of polarization retention of plane-polarized light that has been passed through a sample containing antiserum and tracer. More specifically, the tracers have the following structure: (see above formulas)
Patent CA-2048496-C (CA)
Title: Flaw detector for metal material
Inventor: HOSOHARA YASUHARU
IPC: G01N27/90
Filed: 1991-08-06
Granted: 1996-07-30
Abstract: The present invention relates to a flaw detector for metal material which can maintain and manage pipelines by means of the remote field eddy current method and a remote field eddy current sensor apt for the above detector.         In the flaw detector for metal material, AC signal having a constant level and shifted in a predetermined phase angle are added with received signal received in receiving coils of the remote field eddy current sensor.  Thus stable phase detection in a normal part of the pipeline to be tested can be obtained and precise diagnosis to the pipeline to be tested can be performed by preventing  generation of abnormal flaw data.  Further, when using an AGC circuit in order to maintain the received signal level provided by the received coils, S/N ratio of the flaw data can be improved by stabilization of the received signal level.         Further, is providing a receiving coils which receive the remote field eddy current and another receiving coil which have fewer number of turns than that of said received coils and are spaced further from the exciting coil than the predetermined distance, a stable data as to both of the gradually flaw progressing part and the local flaw progressing part can be obtained by the remote field eddy current sensor.
Patent CA-2049436-C (CA)
Title: Press section of a paper machine
Inventor: STEINER KARL
IPC: D21F3/02
Filed: 1991-08-19
Granted: 1995-09-05
Abstract: A first endless felt belt (43) which absorbs water from the belt (9) passes through a first press nip (1) and a similar second felt belt (57) passes through a second press nip (II).  The arrangement is such that the web (9) is continuously in contact with at least one transport means (for instance, with one of the felt belts).  In both press nips (I, II) the web (9) is in contact with an endless elastic press element (for instance, press belt or press shell) the water absorption capacity of which is less than that of the felt belts (43, 57).  It is essential that two endless elastic press elements which are independent of each other, namely a first and a second press element (47, 53) are present and that the one side of the web comes into contact with the first press element (47) in the first press nip (I) and the other side of the web comes into contact with the second press element (53) in the second press nip (II). The press section has neither a stone roll nor a suction press roll.
Patent CA-2051322-C (CA)
Title: Thermoplastic elastomer composition
Inventor: TANAKA TERUTAKA
IPC: C08L47/00
Filed: 1991-09-13
Granted: 2002-02-12
Abstract: An olefin thermoplastic elastomer composition prepared by subjecting a composition comprising (a) 100 parts by weight of an ethylene - .alpha.-olefin - non-conjugated diene copolymer rubber having a high molecular weight, the Mooney viscosity (ML 1+4, at 125°C) of a composition consisting of 100 parts by weight of the copolymer rubber and 75 parts by weight of a mineral oil-type softening agent being 40 or more, (b) from 10 to 500 parts by weight of a crystalline ethylene-propylene block copolymer resin having a melt flow rate of 10 to 50, (c) from 3 to 300 parts by weight of a mineral oil-type softening agent, and (d) from 5 to 100 parts by weight of a low-molecular-weight propylene homopolymer resin having a number-average molecular weight of 2000 to 20000, the weight ratio of the low-molecular-weight propylene homopolymer resin to the crystalline ethylene-propylene block copolymer resin being 0.8 or less, to dynamic vulcanization using, as a vulcanizing agent, from 0.5 to 15 parts by weight of a reactive alkylphenol-formaldehyde resin to vulcanize the ethylene - .alpha.-olefin - non-conjugated diene copolymer rubber to a high degree. The elastomer composition is excellent in injection moldability, and a molding prepared therefrom has a good appearance, excellent mechanical properties, high shape recoverability, high oil resistance, and low anisotropy in mechanical properties. The elastomer composition is therefore favorably usable for parts of automobiles and the like.
Patent CA-2058255-C (CA)
Title: Recovery and upgrading of hydrocarbons utilizing in situ combustion and horizontal wells
Inventor: LEAUTE ROLAND P
IPC: E21B43/243
Filed: 1991-12-20
Granted: 1997-02-11
Abstract: Disclosed are a method and appratus for recovering and/or upgrading hydrocarbons utilizing in situ combustion and horizontal wells.  Vertical injection wells are utilized to inject an oxidant into a reservoir for in situ combustion, with the combustion gases vented through vertical wells offset from the injection wells, thus causing the combustion front to travel toward the vertical offset wells.  Production of hydrocarbons is through horizontal wells positioned beneath the vertical offset wells.  Upgrading occurs when the horizontal wells are shut in and hot fluids injected through the offset wells into hydrocarbons that have accumulated at the bottom of the offset wells.
Patent CA-2061450-C (CA)
Title: Bundle foreign object search and retrieval apparatus
Inventor: JENS STEPHEN C
IPC: F22B37/48
Filed: 1992-02-18
Granted: 2003-11-04
Abstract: An apparatus (10) for the location and removal of foreign objects from a difficult to access geometry utilizes a flexible lance (12) formed of individual hose bar segments (14) strung on cables (16) to give a structure that is flexible along its length and fairly rigid in a direction transverse to its length. Extending from working channels (18) of nozzle block (20) of the lance (12) are a pair of multi-prong retrievers (22).      A miniaturized Videoprobe camera (24) is provided in the nozzle block (20) between the two retrievers (22). The retrievers are each connected to an actuating cable (26), which extends through the flexible lance (12) to a manual control (28). The camera (24) is connected by a cable (30) to suitable video processing circuits for generation of images on a video display (32). The cable (30) also houses a fiber optic bundle which conveys light to the area being serviced by the lance (12). The flexible lance (12) extends through a transporter (34), which positions the nozzle block end of the lance (12) opposite a portion of a steam generator or other difficult to access geometry. The transporter (34) moves along a transport rail (36) to move the nozzle block end of the lance (12) into position. The lance (12) is then advanced through the transporter (34) to move the nozzle block end into the difficult to access geometry and retracted to withdraw the nozzle block end from the difficult to access geometry.
Patent CA-2072575-C (CA)
Inventor: ALKER DAVID
IPC: C07D211/70
Filed: 1990-12-18
Granted: 2000-08-08
Abstract: On décrit des antagonistes sélectifs de récepteurs muscariniques de formule (I), où R1 et R2 sont tous deux phényle facultativement substitué, les traits interrompus désignent une liaison facultative, X est (a), (b) ou CH- lorsque la liaison double est absente ou (c) quand la liaison double est présente, X étant lié à un atome de carbone d'A, A est choisi parmi certains groupes pipéridine et pyrrolidine, n est 1 à 3 et R3 est phényle ou thiényle, pyridyle ou pyrazinyle facultativement substitué.
Patent CA-2078389-C (CA)
Title: Telephone line message waiting and ring indicator
Inventor: LEE ALLAN YOOK FOO
IPC: H04M1/82
Filed: 1992-09-16
Granted: 1998-12-08
Abstract: A visual indicator circuit is provided for visually indicating that a telephone is ringing or that a message is waiting.  The circuit includes a visual indicator such as a light emitting diode (LED), a voltage triggering circuit for triggering when a minimum predetermined voltage is applied to the telephone lines, and a current limiting circuit for limiting the current provided to the LED.
Patent CA-2079619-C (CA)
Title: Waste treatment oxidation operations
Inventor: BERGMAN THOMAS J JR
IPC: C02F3/26
Filed: 1992-10-01
Granted: 1998-09-01
Abstract: Bioremediation or other liquid waste biotreatment operations are enhanced by the use of turbulence promoters to create turbulent flow conditions in an oxygen/liquid waste dispersion prior to passage in an improved gas/liquid distribution system for passage through eductors into a lagoon or other holding source of the liquid waste being treated.
Patent CA-2079846-C (CA)
Title: Washer hose arrangement in wiper arm device
Inventor: HOSHINO TAKASHI
IPC: B60S1/46
Filed: 1992-10-05
Granted: 2001-09-11
Abstract: A wiper arm device includes a wiper arm fixed at its base end to a wiper shaft which protrudes from a vehicle body. A washer nozzle provided on the wiper arm discharges washer liquid towards the windshield of the vehicle. A washer hose supplies the washer liquid to the washer nozzle and has one end protruding from a position which is near the wiper shaft and which is clear of the oscillation stroke of the wiper arm. The washer hose extends along the wiper arm so as to be connected at its other end to the washer nozzle. An arm cover is provided on the base end of the wiper arm so as to cover the end portion of the washer hose protruding from the vehicle body.
Patent CA-2080193-C (CA)
Title: Unleaded aviation gasoline
Inventor: HENDERSON DOUGLAS HAROLD
IPC: C10L1/18
Filed: 1992-10-08
Granted: 2003-12-16
Abstract: An unleaded aviation gasoline composition which comprises a blend of hydrocarbons and at least one cyclopentadienyl manganese tricarbonyl compound dissolved therein in an amount such that the composition has a minimum knock value lean rating octane number of 100 as determined by ASTM Test Method D2700 and wherein Motor Method octane ratings are converted to aviation ratings in the man-ner described in ASTM Specification D910-90, the composition being further characterized by having: a) a distillation temperature by ASTM Test Method D86 of 10% evaporated, 167°F maximum temperature; 40% evaporated, 167°F maximum temperature; 90% evaporated, 275°F maximum temperature; and a final boiling point of 338°F maximum temperature; the sum of the 10 and 50% evaporated temperatures being 307°F minimum; the distillation recovery being 97% minimum; the distillation residue being 1.5% maximum; and the distillation loss being 1.5% maximum; b) a heat of combustion by ASTM Test Method D1405 and as calculated from Table 1 thereof of 18,720 btu per pound minimum, or a heat of combustion by ASTM Test Method D2382 of 18,700 btu per pound minimum, the latter method controlling in case of a discrepancy therebetween; c) a vapor pressure by ASTM Test Method D323 or D2551 of 5.5 psi minimum and 7.0 psi maximum; d) a copper strip corrosion by ASTM Test Method D130 of number 1, maximum; e) a potential gum (5-hour aging gum) by ASTM Test Method D873 of 6 mg per 100 mL maximum, or a potential gum (16-hour aging gum by ASTM Test Method D873) of 10 mg per 100 mL; f) a sulfur content by ASTM Test Method D1266 or D2622 of 0.05% by weight maximum; g) a freezing point by ASTM Test Method D2386 of -72°F maximum; and h) a Water reaction by ASTM Test Method D1094 wherein the volume change, if any, does not exceed ~ 2 mL.
Patent CA-2082682-C (CA)
Title: Cast primer and small diameter explosive composition
Inventor: STROMQUIST DONALD M
IPC: C06B45/08
Filed: 1992-11-12
Granted: 2003-01-07
Abstract: A solid explosive composition is made by curing a mixture of a from about 20% to about 50 % by weight of a liquid matrix, from about 50% to about 80% by weight of a dry or monohydrate inorganic chlorate or perchlorate salt, and from 0% to about 22% of a salt selected from the group consisting of nitrate oxidizer salts and inert chloride salts, after transferring said mixture to a mold. The matrix can include from about 50% to about 84% by weight of a non-explosive liquid fuel selected from the group consisting of polyhydric alcohols, lower aliphatic alcohols, ketones, and hydrocarbons; from 0% to about 15% by weight of a nitrate oxidizer salt; from 0% to about 15% by weight water; from 0% to about 15% by weight of a thickener; from 0% to about 5% by weight of an acid; and from 0% to about 2% by weight of a surfactant.
Patent CA-2087105-C (CA)
Title: Non-corrosive composition and methods useful for the extraction of nucleic acids
Inventor: VAN NESS JEFFREY
IPC: C12N15/09
Filed: 1991-07-12
Granted: 2000-09-12
Abstract: This invention relates to safe and effective methods for the extraction of nucleic acids. In particular, methods are described for isolating nucleic acid from a sample containing a biological mixture of nucleic acids and other biological compounds wherein the sample is combined with an extraction solution containing at least one organic compound such as benzyl alcohol or a benzyl alcohol derivative to form an aqueous and non-aqueous phase. The nucleic acid is isolated from the aqueous phase. Preferably, the resulting combined solution also contains bentonite, as defined below. Typically, the sample will first be combined with a lysing agent before extraction. The lysing agents preferred are chaotropic salts such as guanidinium hydrochloride and guanidinium isothiocyanate.
Patent CA-2088828-C (CA)
Title: Electrosurgical trocar assembly
Inventor: GENTELIA JOHN S
IPC: A61B19/00
Filed: 1993-02-04
Granted: 1999-07-20
Abstract: A trocar assembly includes an elongate trocar device and a surrounding cannula.  The trocar device incorporates an electrosurgical cutting element which is used to make a guide hole for the cannula and thus enables the remainder of the trocar assembly to enlarge the puncture.  An electronic control circuit senses the current flow to the cutting element and, when the trocar device breaks through the wall of the organ being cut, this circuit cuts off the connection to the associated electrosurgical generator.  Further control circuitry prevents a surgeon from resuming electrosurgery until a predetermined time period has elapsed.  Multiple trocars of different diameters are provided for the same assembly.
Patent CA-2093460-C (CA)
Title: Extrusion die and an extrusion method using same
Inventor: YANO SADAHIDE
IPC: B21C25/00
Filed: 1993-04-06
Granted: 2003-09-23
Abstract: A female die 3 is composed of a plate-shaped bearing tip 31, a backup block 32 and a cylindrical holder 33 for receiving and setting in place the tip together with the block, in which the bearing tip 31 made of a hard metal and the backup block 32 also made of the hard metal are such that they can be manufactured simply and easily, and in which only the bearing tip 31 need be replaced with a new one if and when the bearing portion of the die has been abraded.
Patent CA-2094027-C (CA)
Title: Osteogenic peptides
Inventor: OPPERMANN HERMANN
IPC: C07K16/00
Filed: 1991-10-18
Granted: 2001-12-25
Abstract: Disclosed are 1) the cDNA and amino acid sequences for novel polypeptide chains useful as subunits of dimeric osteogen-ic proteins, 2) osteogenic devices comprising these proteins in association with an appropriate carrier matrix, 3) methods of prod-ucing the polypeptide chains using recombinant DNA technology, and 4) methods of using the osteogenic devices to mimic the natural course of endochondral bone formation in mammals.
Patent CA-2095065-C (CA)
Title: Secure toll collection system for moving vehicles
Inventor: CLAUS DAVID MICHAEL
IPC: G06Q20/36
Filed: 1993-04-28
Granted: 1999-01-12
Abstract: A secure toll payment system is realized by transmitting a changeable encryption code from roadside equipment at a toll plaza to a moving vehicle. Thereafter, the moving vehicle uses it to encrypt payment information according to the Data Encryption Standard algorithm. The moving vehicle transmits the encrypted payment information to the roadside equipment which performs a credit or debit transaction. Because the encryption code changes from time to time, so too does the nature of the signal which is transmitted by the vehicle; and fraud, ba sed on electronic eavesdropping, is substantially eliminated. The encryption code comprises an 8-bit random number and a time/date number. Vehicle-mounted apparatus includes a transponder unit and a portable smart card which inserts th erein. The roadside equipment includes a pair of spaced-apart antennas that are sequentially located along an express payment lane at a toll plaza and a compute r (Plaza Server) which controls them.