baber/WOPTO huggingface dataset:
Patent CA-1203293-A (CA)
Inventor: SMOOT LANNY S
IPC: H04B10/158
Filed: 1983-07-08
Granted: 1986-04-15
Abstract: ABSTRACT          IMPROVEMENTS IN OR RELATING TO TRANSIMPEDANCE AMPLIFIERS    A transimpedance amplifier allows an optical transmitter and receiver to be in close proximity to each other without fear of overloading the receiver. The improvement increases the dynamic range of the transimpedance amplifier and thereby the operating range of the receiver.  A peak detector (22) at the output of an inverting amplifier (11) within the transimpedance amplifier turns on a field effect transistor (FET) circuit (23) when an AC component of an electrical signal becomes so large that the inverting amplifier would otherwise go into saturation whereby the FET circuit (23) acts as an AC shunt impedance at the input of the inverting amplifier and diverts the excess AC current to ground (30).  Also, the FET circuit (23) acts as a DC resistance in concert with sense and sink current mirrors (21) and (24) to effectively divert an excessive DC component of the electrical signal away from the input of the inverting amplifier (11).  Although the dynamic range of the transimpedance amplifier is increased, the optical sensitivity and the performance of the receiver remain unchanged.
Patent CA-1191962-A (CA)
Inventor: LEGRESLEY BARRY P
IPC: H03M13/00
Filed: 1983-08-11
Granted: 1985-08-13
Abstract: PARALLEL CYCLIC REDUNDANCY CHECKING CIRCUIT         ABSTRACT OF THE DISCLOSURE          A parallel cyclic redundancy checking circuit which determines the validity of digital, binary, cyclical data.  The parallel structure of this circuit enables it to check high frequency data.  Shift reg-isters are used to store sequentially occurring par-allel groups of data and a feedback network comprising exclusive-or gates provide a coding arrangement which produces a resultant data pattern to indicate the validity of the cyclical parallel input data.
Patent CA-1203521-A (CA)
Inventor: JOHNSON LOUIS W
IPC: F16C33/08
Filed: 1983-09-12
Granted: 1986-04-22
Abstract: Abstract of the Disclosure An annular seat member is supported between an annular base member and a load receiving member.  The seat member is tapered toward its upper end and projects into an inverted V-shaped recess in the load receiving member.  The tapered surfaces of the seat member have a plurality of annular grooves.  Inserts are mounted in projecting relation from these grooves and are formed of a material which provides a long wearing bearing surface with the metal of the load receiving member.
Patent CA-1212384-A (CA)
Inventor: SAKAMOTO TERUHISA
IPC: C07C29/04
Filed: 1983-10-12
Granted: 1986-10-07
Abstract: PROCESS FOR PREPARATION OF ALCOHOLS BY                       HYDRATION OF OLEFINS     ABSTRACT OF THE DISCLOSURE     Olefins are hydrated to the corresponding alcohols in the presence of at least one crystalline alumino-silicate selected from offretite, ferrierite and erionite.  The offretite, ferrierite and erionite are preferably characterized by Xray diffraction patterns shown in Tables 1 and 7; Tables 2, 8 and 9; and Table 3, respectively.  At least a part of the exchangeable cations in the offretite, ferrierite and erionite may be exchanged with at least one cation selected from a hydrogen ion, an alkaline earth metal ion and a rare earth metal ion.  Furthermore, at least a part of the exchangeable cations in the erionite may be exchanged with an ammonium ion and/or an alkali metal ion.
Patent CA-1222856-A (CA)
Inventor: CRABTREE LARRY V
IPC: B29C33/02
Filed: 1983-11-02
Granted: 1987-06-16
Abstract: ABSTRACT OF THE DISCLOSURE         A mold for use in heat expanding prefoamed polystyrene beads to form a part of a predetermined shape is disclosed.  The mold comprises a cavity defined by separable mold wall portions.  Each mold wall portion has on its exterior a chamber into which a heating medium is introduced to heat the mold walls and also into which cooling medium is introduced to cool the walls. A plurality of nozzles are provided in the mold walls and a corresponding plurality of flexible tubes interconnect the nozzles to a manifold located in the corresponding chamber.  A pressurized heating medium is introduced to the manifold whereby the heating medium is injected into the cavity to expand prefoamed polystyrene beads in the cavity.  The mold construction provides for an economical, readily manufactured unit.
Patent CA-1220264-A (CA)
Inventor: JOHNSON EDWIN A
IPC: F02D41/24
Filed: 1983-11-10
Granted: 1987-04-07
Abstract: Abstract:             FUEL REDISTRIBUTION CONTROL FOR AN    INTERNAL COMBUSTION ENGINE      A fuel redistribution control for an internal com-bustion engine having a fuel control computer and fuel delivery means for delivering fuel to the engine in response to electrical signals.   A signal generator generating first signals indicative of the incremental rotational  velocity  of  the  engine's  output  member resulting from the torque impulses imparted to the output member by the individual cylinders, averaging means for generating from said first signal an average rotational velocity signal, a circuit for generating a difference signal indicative of the difference between said first signals and said average rotational velocity signal, integrator  means  for  individually accumulating  said difference signals to generate a correction signal for each cylinder, means for averaging said correction signal to generate an average correction signal, means for sum-ming said correction signal with the base fuel quantity signals  generated  by  the  fuel  control  computer  to generate  intermediate fuel quantity signals,  and means for summing the correction signals to said intermediate fuel quanity signal to generate a corrected fuel quantity signal activiating the fuel delivery means to deliver a quanity of fuel to each cylinder tending to eqaulize the contribution of each cylinder to the total output torque of the engine.
Patent CA-1246592-A (CA)
Inventor: KOLESKE JOSEPH V
IPC: C08L63/00
Filed: 1983-11-24
Granted: 1988-12-13
Abstract: Abstract This invention is directed to adducts of at least two poly(active hydrogen) organic compounds and a polyepoxide comprising the reaction product of at least two poly(active hydrogen) organic compounds differing as to classification and a polyepoxide containing two or more epoxy groups per molecule. said poly(active hydrogen) organic compounds being employed in an amount at least sufficient to effect substantially complete reaction of the epoxy groups of the polyepoxide.  The adducts are useful in the formulation of high solids coating compositions, polyurethane elastomers, inks, sealants, adhesives and the like.
Patent CA-1210077-A (CA)
Inventor: JONES MARSHALL G
IPC: B23K26/02
Filed: 1983-11-25
Granted: 1986-08-19
Abstract: LASER MATERIAL PROCESSING THROUGH A FIBER OPTIC       Abstract of the Disclosure Pulse laser energy in the near infrared and visible spectrum is passed through a single fiber optic at power levels required for material and metal processing.          A neodymium-YAG used in pulsed mode is coupled to the end of a quartz fiber optic which transmits peak powers in the kilowatt range.  The beam at the output of the fiber optic is focused to achieve power densities capable of cutting, drilling, etc.  The main advantage is greater flexibility of laser beam manipulation.
Patent CA-1192956-A (CA)
Inventor: CLEVELAND DIXON
IPC: B23K11/25
Filed: 1983-12-07
Granted: 1985-09-03
Abstract: METHOD AND APPARATUS FOR DETECTING EDGE  WELDS DURING RESISTANCE SPOT WELDING Abstract of the Disclosure During a weld period the weld parameters are monitored and data representing the weld resistance curve and the power curve are acquired and stored for analysis by a suitably programmed computer.  The derivative of R, ? is calculated and stored and the function is divided by power P to obtain ?/P,  The resistance curve is searched to obtain the maximum value Rm which occurs during the heating phase and the function ?/P is searched prior to the time of Rm to find the maximum of that curve representing the highest rate of resistance increase.  Then the ?/P curve is searched subsequent to its maximum to deter-mine when the function reaches a specified percentage of the maximum.  That value occurs at the knee of the resistance curve and approximates the onset of melting in the weld.          A prediction of whether a weld is a nugget or a sticker is made by calculating the ratio of weld energy after the onset of melting to the total weld energy, the ratio of the resistance drop after the resistance peak to the peak resistance, and then a weighted sum of the energy ratio and resistance drop ratio.          An edge weld geometry is detected by calcu-lating from the resistance and power curves the weld energy during the period of expulsion, if any, divided by the cumulative energy between the onset of melting and the end of expulsion, a measure of expul-sion intensity based on the  maximum degree of resis-tance inflection, and then a weighted sum of the energy value and the inflection value.
Patent CA-1219679-A (CA)
Title: High-accuracy four-quadrant multiplier which also is  capable of four-quadrant division
Inventor: GILBERT BARRIE
IPC: G06G7/163
Filed: 1984-01-16
Granted: 1987-03-24
Abstract: ABSTRACT OF THE DISCLOSURE           A four-quadrant analog multiplier comprising a first pair of transistors to handle one multiplier input and second and third pairs of transistors interconnected with said first pair to effect multiplication.  Resistors are connected to the bases of the second and third pairs of transistors, and current which is proportional-to-absolute-temperature is caused to flow through the resis-tors.  The resistors are laser-trimmed until VBE mismatch distortion is nulled.  An op amp is used to drive the bases of all three pairs of transistors.  A current source is connected to the first pair of transistors, and is separ-ately controlled so as to provide for four-quadrant divi-sion.  A number of additional features are incorporated to further minimize distortion and to improve performance in other respects.
Patent CA-1203855-A (CA)
Inventor: ISHIKAWA FUMIO
IPC: H03F3/50
Filed: 1984-01-26
Granted: 1986-04-29
Abstract: ABSTRACT OF THE DISCLOSURE           A buffer circuit having a main buffer circuit section formed of a pair of complementary input side transistors the bases of which are connected together and a dummy circuit section having the same circuit construction as the main buffer circuit section. A feedback signal formed on the basis of the output from the dummy circuit section is supplied to the dummy circuit section and the main buffer circuit section so as to make the output of the dummy circuit section equal to a predetermined value,
Patent CA-1226460-A (CA)
Inventor: TAKAGI MITSUO
IPC: E01F13/00
Filed: 1984-03-30
Granted: 1987-09-08
Abstract: ABSTRACT OF THE DISCLOSURE      A marker rope to be stretched around a danger zone such as a site of road repairs to warn trespassers off, having a plurality of cords.  Each cord has a plug end and a socket end so as to be connected to each other and is provided with a plurality of luminous bodies and a sound producing unit which are water tightly sheathed in a colored transparent protecting tube.
Patent CA-1210050-A (CA)
Title: Tete d'impression electrostatique
Inventor: PLAYE PATRICE
IPC: B41J2/395
Filed: 1984-05-08
Granted: 1986-08-19
Abstract: Tête d'impression électrostatique, qui comprend au moins une rangée d'électrodes disposées à pas régulier et réparties en n groupes, sur la rangée et une contre électrode constituée par un matériau résistif s'étendant face aux électrodes de cette rangée dans lequel n + 1 pistes conductrices définissent n résistances en série équipées de leurs connexions d'accès, pour la sélection des différents groupes d'électrodes. Cette tête d'impression est utilisable en impression électrostatique directe ou indirecte.
Patent CA-1215737-A (CA)
Inventor: IBRAHIM EL-ERAKY A
IPC: H02K55/04
Filed: 1984-05-24
Granted: 1986-12-23
Abstract: ABSTRACT OF THE INVENTION         A radiation heat shield which comprises a plu-rality of helical  grooves  distributes possible  thermal expansions  around  its  circumference.   These  potential thermal expansions could be caused by transient conditions or other abnormal operational modes which could reduce the flow of coolant through particular fluid passages of the radiation shield.  By incorporating a plurality of helical fluid passages,  these potential  thermal  expansions  are distributed  around  the  circumference  of  the  radiation shield and the resulting distortion moments tend to cancel each other and, provided that a sufficient number of turns is possible, eliminate the imbalance.
Patent CA-1232160-A (CA)
Inventor: EWERT DALE L
IPC: B25B23/02
Filed: 1984-05-28
Granted: 1988-02-02
Abstract: ABSTRACT     The invention relates to an attachment for a power tool which improves stability particularly when used with self-drilling fasteners having heads with beveled integral washers.  The attachment has a generally frustoconical end surface which abuts the beveled integral washer of a fastener head causing the fastener to center itself.  The attachment also causes standard fasteners with flat integral washers to center themselves during driving by virtue of the contact between the outer perimeter of the washer with the frustoconical end surface.
Patent CA-1242221-A (CA)
Inventor: TEMPLER DAVID A
IPC: C07C29/76
Filed: 1984-06-14
Granted: 1988-09-20
Abstract: -i-PATENT APPLICATION OF                    David A, Templer, John E. Schuler, Robert C. Mahar and Robert W. Percival for ALCOHOL PURIFICATION                 Abstract of the Disclosure A method for purification of a lower alkanol containing corrosion-producing impurities selected from organic acids and metal salts by contacting the alkanol with two or more ion exchange resins, at least one of which is a cation exchange resin and another of which is an anion exchange resin.
Patent CA-1229543-A (CA)
Inventor: SMITH MERRILL M
IPC: B32B37/00
Filed: 1984-08-10
Granted: 1987-11-24
Abstract: ABSTRACT          An improved process is disclosed for forming tiles that are embossed in register with a printed design.  A printed design is first applied to a base coat and a wear coat is laminated over the design.          Advantageously, the wear coat is applied to the printed web before it is heated for lamination.  Before embossing occurs, the laminated product is cooled until partial setting occurs, and the embossing roll is sprayed with water in order to minimize the likelihood that the laminated product will adhere to the embossing roll.  To avoid distorting the web during lamination and embossing, proper web tension is maintained by controlling the rotational speeds of the laminating drum and the embossing roll so that a desired ratio is preserved.  The web is then cut into oversized tiles that shrink to size during annealing.
Patent CA-1229745-A (CA)
Inventor: BURTSCHER HEINZ
IPC: G01N27/64
Filed: 1984-08-20
Granted: 1987-12-01
Abstract: ABSTRACT OF THE DISCLOSURE          In a combustion process a fuel is mixed with an oxygen-contai-ning gas in an adjustable ratio. This fuel-gas-mixture is burned and thereby an exhaust gas is produced. At least a part of the exhaust gas is collected and exposed to an ultra violet radia-tion source, thereby generating positive and negative charge carriers in the exhaust gas by means of a photoelectric charge separation process. The kind or amount of the positive and/or negative charge carriers is detected to produce a measurement value which reflects the amount and/or the charge of the charge carriers. Therefrom a control signal is derived and the mixture-ratio of the oxygen-containing gas and the fuel, the so-called .lambda.-factor,is adjusted in response to said control signal in order to improve the efficiency of the combustion and to reduce the emission of toxic substances.
Patent CA-1233955-A (CA)
Inventor: MORANDI CESARE
IPC: E03D9/08
Filed: 1984-10-19
Granted: 1988-03-15
Abstract: ABSTRACT A toilet bowl is fitted with devices to spray warm water intended for washing after a bowel movement and to blow warm air for the subsequent drying.  To heat the water, the toilet is fitted with a rapid heat exchanger consisting of many tubes arranged in clusters of concentric coils radially spaced among themselves, contained in a tubular chamber in which the air in-tended for drying is blown to lap the tubes.  The rapid heat exchanger is located in a receptacle in the bowl or in the fixed portion of the toilet seat.
Patent CA-1265713-A (CA)
Inventor: COOKE GEORGE
IPC: F22B37/40
Filed: 1984-10-19
Granted: 1990-02-13
Abstract: ABSTRACT In a water tube boiler comprising a housing enclosing tubes bent to form vertical chambers successively traversed by rising hot combustion gases, the tubes being connected at the bottom to a cold water manifold and at the top to a stearn manifold, the manifolds project beyond the housing with a downcomer outside the housing connecting the top of the lower manifold and the lowest part of the upper manifold, thereby permitting the boiler to operate with a shallow level of water in the upper manifold, speeding up circulation of water and its heating, and permitting substantially dry steam to be discharged from the upper manifold.  The chambers may include baffles which are angled so that the hot gas hits them at an angle less than 90° so as to be deflected thereby in the direction of its advance, thereby avoiding hot spots. Advantageously successive chambers from bottom to top are reduced in volume to make up for the reduction in volume as the hot gas cools, thereby keeping the gas velocity high and maintaining turbulence which helps heat exchange. For efficient fuel utilization, notwithstanding fluctuations in demand, the operator can monitor the oxygen content of the exiting combustion gas and adjust the baffling to maintain it substantially constant.
Patent CA-1220075-A (CA)
Inventor: BOUDREAUX DONALD P
IPC: A23L27/24
Filed: 1984-10-29
Granted: 1987-04-07
Abstract: CHEESE-FLAVORED SUBSTANCE                          Abstract of the Invention A two-stage process for producing a cheese-flavored substance is claimed. A flavor development medium is fermented with a source of lipase/ protease; the source of lipase/protease is inactivated and the flavor development medium is fermented by at least one lactic acid-producing microoganism which is thereafter inactivated.  The source of lipase/pro-tease is preferably a microorganism, especially Candida lypolitica ATCC 20234.  The cheese-flavored substance produced by the process and foods containing the cheese-flavored substance produced by the process are also claimed.
Patent CA-1228776-A (CA)
Title: Dual mode automatic injector
Inventor: SARNOFF STANLEY J
IPC: A61M5/32
Filed: 1984-12-14
Granted: 1987-11-03
Abstract: DUAL MODE AUTOMATIC INJECTOR               ABSTRACT OF THE DISCLOSURE          A dual mode automatic injector having a dual mode safety device for preventing the release of the stressed spring assembly except when it is desired to operate the medicament injecting assembly by the stressed spring assembly.  The dual mode safety device comprises a first part including a pin portion disposed in a safety position extending through a central aperture in the rear wall of the housing assembly of the injector in release preventing relation with the stressed spring assembly for removal therefrom in response to a relative rearward movement with respect to the rear wall so as to permit an actuating movement to release the stressed spring assembly.  The first part includes an automatic removal portion fixed to the rearward end of the pin portion.  The automatic removal portion is of a size greater than the pin portion but less than the rear wall so as to present a forwardly facing surface spaced rearwardly from the rear wall operable to be engaged by a holding member while a moving member is moved forwardly into engagement with the rear wall to provide both a relative rearward removal movement for the pin portion and an actuating movement for the stressed spring assembly.  The dual mode safety device also includes a separate second part and a connection between the first and second parts for (1) enabling the second part to be connected with the first part while the pin portion of the latter is in its safety position in a manual mode position wherein the first part is in rearward motion transmitting relation to the second part and (2) enabling the second part to be removed from the manual mode position while the pin portion of the first part is retained in its safety position.  The second part includes a cap portion of a size and shape to be conveniently manually grasped by a user and moved rearwardly with respect to the housing assembly in order to effect the removal of the pin portion from its safety position when the second part is in its manual mode position.
Patent CA-1244786-A (CA)
Inventor: SMITH LLOYD M
IPC: C12N15/09
Filed: 1984-12-19
Granted: 1988-11-15
Abstract: ABSTRACT OF THE DISCLOSURE        The invention consists of a method for the synthesis of oligonucleotides which contain free aliphatic amino group(s).          The synthetic method is general, permitting amino groups to be placed on oligonucleotides of any composition or length which is attainable by current DNA synthetic methods.
Patent CA-1254694-A (CA)
Inventor: HARRIS JAMES E
IPC: C08L69/00
Filed: 1985-03-01
Granted: 1989-05-23
Abstract: Abstract Cookware prepared from polycarbonates containing repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl)sulfone (TMBS), optionally a dihydric phenol such as 2,2-bis-(4-hydroxyphenyl)propane (Bisphenol A), and a carbonate peecursor.  The cookware can be used in essentially all cooking oven applications.
Patent CA-1257073-A (CA)
Inventor: PRALUS CHRISTIAN
IPC: C01B15/047
Filed: 1985-04-03
Granted: 1989-07-11
Abstract: A stabilized acidic aqueous composition comprising hydrogen peroxide, metallic ions, and 3-amino-1,2,4-triazine, said triazine being present in an amount sufficient to improve the stability of said composition against decomposition of said peroxide and the methods of utilizing such composition to treat metallic surfaces and to precipitate hydrated uranium peroxide from a solution containing uranium dissolved therein.
Patent CA-1235962-A (CA)
Inventor: GORDON ROY G
IPC: B05D1/02
Filed: 1985-05-13
Granted: 1988-05-03
Abstract: ABSTRACT OF THE DISCLOSURE    A  rapid  process  for  depositing  anti-iridescent  base layers on glass comprising spraying an anhydrous solution of an aluminum alkoxide-chelate material and another refraction-modifying chelate reactant onto a hot glass surface.
Patent CA-1262799-A (CA)
Inventor: SCHOOLNIK GARY K
IPC: C07K7/08
Filed: 1985-06-06
Granted: 1989-11-07
Abstract: BROAD SPECTRUM VACCINE AGAINST GONORRHEA                         Abstract Vaccines comprising peptide sequences corresponding to immunorecessive determinants in gonorrhea pilus protein are disclosed.  The vaccines are effective in protecting human subjects against infection by a wide range of gonorrhea strains by raising antibodies which interfere with the colonization of the epithelium by the infecting bacteria or which enhance phagocytosis.