baber/WOPTO huggingface dataset:
Patent CA-1277787-C (CA)
Title: Method and apparatus for producing a curve image
Inventor: BAKER DAVID C
IPC: G06T11/20
Filed: 1987-05-27
Granted: 1990-12-11
Abstract: METHOD AND APPARATUS FOR PRODUCING A CURVE IMAGE                       Abstract A method and apparatus of providing a visual representation of a curve image wherein curve image data is provided by a B-Spline equation computed with a forward difference technique using scaled integer variables.  The method provides for the scaling of the initial base matrix computation of the geometry vector coefficients followed by the computation of the forward difference interval coefficients using integer arithmetic.  The curve coordinate values for each interval are computed from the forward difference interval coefficient integers descaled by the scaling parameter.  By employing integer arithmetic in a divide approximation technique, the use of floating point arithmetic is avoided.  The apparatus for producing the visual representation of the curve image includes a computational section that provides for pipelined computations of the forward difference interval coefficients to provide high-speed curve coordinate value computation.
Patent CA-1277747-C (CA)
Title: Control system for a crane
Inventor: PUTKONEN ARI
IPC: B66C23/90
Filed: 1987-06-12
Granted: 1990-12-11
Abstract: ABSTRACT OF THE DISCLOSURE           The invention relates to a system for controlling the boom of a hydraulic crane, the crane being provided with at least one load sensor on the basis of which the speed of the boom is controlled so that the greatest permissible speed of the boom increases with decreasing load and correspondingly decreases with increasing load. According to the invention, in order to reduce the dynamic stresses  exerted  on  the  crane,  the  oil  flow  of  the hydraulic  actuating  means  is  controlled  by  directly adjusting the speed of the movements of the valves of the actuating means on the basis of a speed instruction of the boom and on the basis of a load signal and by filtering such  speed  instructions  which  indicate valve movement speeds exceeding a predetermined value.
Patent CA-1284247-C (CA)
Title: Metathesis polymerization of cycloolefins
Inventor: HARA SHIGEYOSHI
IPC: C08G61/08
Filed: 1987-06-15
Granted: 1991-05-14
Abstract: Abstract of the Disclosure A polymer prepared by metathesis polymerizing at least one compound represented by the formula   wherein m is 0 or 1 and R1 and R2 respectively represent hydrogen atom or an alkyl group containing up to three carbon atoms provided that both R1 and R2 are not hydrogen atom at the same time, or a mixture of said compound with at least one other metathesis polymerizable comonomer, a useful molded article, processes for preparing the polymer and the article and a polymerizable composition therefor.
Patent CA-1289848-C (CA)
Inventor: OTTENGRAF SIMON P P
IPC: B01F3/04
Filed: 1987-09-10
Granted: 1991-10-01
Abstract: ABSTRACT          The invention relates to a throttling device for the supply of liquid under high pressure (P1) having a gas dissolved in it into a liquid of lower pressure (P0) said device having a supply orifice (2,7) between the high pressure and low pressure side of a dimension, which only depends on the required flow capacity as well as downstream of said orifice a free floating body (3, 9) of a dimension larger than the orifice (2,7), which body forms a slit (5,10) through which the high pressure flow is deflected into the space of lower pressure, said slit having sufficient length to generate a low flow pressure which, together with the low pressure of the low pressure space, keeps the body in equilibrium with the pressure forces acting at the supply side.  The body can have different forms and adjusts itself depending on the circumstances.         The invention also relates to a method of supplying the throttling device in a process which requires a mist of gas bubbles as well as a device for performing the method, said device comprising a tube which stabilizes the generated mist.
Patent CA-1280833-C (CA)
Title: Radiolucent body panel
Inventor: ROTTERMANN ROBERT
IPC: A61N5/10
Filed: 1987-09-11
Granted: 1991-02-26
Abstract: Abstract The body panel can be inserted, as part of the couch top, into a treatment couch intended for radiation therapy.  It consists of an H-shaped frame (1) with two parallel spars (2, 3) which are connected to one another by means of a middle web (4).  The supporting surfaces (5, 6) separated by the middle web are equipped with a transparent string covering (7, 8) which is anchored solely to the two spars (2, 3).  The outer edges of the body panel which are parallel to the middle web (4) of the frame are free of radiation-absorbing frame parts, so that dynamic radiation treatment is possible without interruption when the radiation direction changes from one side of the panel surface to the other.
Patent CA-1309258-C (CA)
Title: Composite grinding wheel
Inventor: BOUCHARD WILLIAM L
IPC: B24D5/14
Filed: 1987-10-28
Granted: 1992-10-27
Abstract: ABSTRACT           A two zoned grinding wheel is disclosed having a lower section or zone composed of bonded abrasive grain and an upper zone or section made up of bonded particles of a material that is softer than the abrasive grain and therefore less abrasive.  The wheel is especially suitable for being held in clamps or a chuck when being used, with the clamps or chuck contacting the wheel on the upper less abrasive section thus greatly reducing wear on said clamp or chuck.
Patent CA-1312715-C (CA)
Title: Process of and apparatus for treating a shaped product
Inventor: IBAR JEAN-PIERRE
IPC: B29C71/00
Filed: 1987-12-15
Granted: 1993-01-19
Abstract: ABSTRACT     A cylindrical product, such as a hollow tube or solid rod,  is subjected to a series of manu-facturing processes. The cylindrical product is moved longitudinally through a sequence of stages,   each stage having an opening through which the cylindrical product passes.  The plurality of stages are arranged in a series to perform a specific rheological pro-cess.   Each  stage  includes  means  for  applying  a preselected temperature,  pressure,  and vibration to the cylindrical product.
Patent CA-1296055-C (CA)
Title: Power supply
Inventor: LAIDLER GRAHAM A
IPC: H02M3/337
Filed: 1988-02-01
Granted: 1992-02-18
Abstract: ABSTRACT POWER SUPPLY       A power supply receives and rectifies mains voltage using bridge D1-D4.  This is used by a pair of transistors Q1 and Q2 to alternate the supply to a transformer T via capacitor C8. Outputs are available from secondary windings T2, T6 and T7.  Further windings T4 and T5 provide an internal power source for system circuitry which includes optical regulation via IC1 and optical switching control using IC2.
Patent CA-1300229-C (CA)
Title: Watthour meter socket adapter
Inventor: BELL JOHN C
IPC: H01R33/95
Filed: 1988-03-04
Granted: 1992-05-05
Abstract: WATTHOUR METER SOCKET ADAPTER                 ABSTRACT OF THE DISCLOSURE         A socket adapter for converting a conventional bottom connected watthour meter housing to a socket-type watthour meter housing.  The adapter includes a housing having a watthour meter receiving portion including a plurality of electrical contacts which removably receive the blade terminals of a watthour meter.  The contacts are connected via electrical conductors to terminals mounted in an integral terminal portion of the housing.  A cover member is removably mountable over the terminal portion of the housing to provide access to the terminals.  The terminal portion and the cover cooperate to form guide surfaces which direct the building conductors into engagement with the terminals within the adapter.  A surge protector in the form of a pair of wires embedded within the peripheral surface of the watthour meter receiving portion of the housing are connectable through a connector mounted on the back wall of the housing to earth ground.
Patent CA-1291875-C (CA)
Title: Fingerprinting compositions, systems and methods
Inventor: VASSILIADES ANTHONY E
IPC: A61B5/1172
Filed: 1988-03-14
Granted: 1991-11-12
Abstract: ABSTRACT OF THE DISCLOSURE A self-contained liquid composition for use in making fingerprints comprising the reaction product of at least one leuco or non-leuco chromogenic compound and at least one color-developing substance in a liquid vehicle that is a solvent for said chromogenic compound and reaction product and a solvent or dispersant for said color-developing substance.  The method of fingerprinting and a fingerprinting system utilizing the liquid composition are also disclosed.
Patent CA-1330025-C (CA)
Title: Small animal housing
Inventor: FROSTAD JOSEPH R
IPC: A01K1/02
Filed: 1988-05-18
Granted: 1994-06-07
Abstract: ABSTRACT OF THE DISCLOSURE          In general,  cages for young pigs or other animals are either unsanitary or do not provide protection from the elements,  i.e.  a warm dry and draft  free environment.   A simple solution to these problems is provided by a unitary two-piece housing with a generally rectangular base,  a feed trough  on  the  top  front  end  of  the  base,  a  removable perforate floor which is easy to wash, a liquid waste storage and a controlled discharge drain outlet, a cover mounted on the base with an open front end, and a skeletal rod or wire gate for closing the open front end slidably and pivotally mounted in the cover for movement between a closed position in the open front end and an open position permitting easy access to the animals.  The gate prevents soiling of the feed trough  by  the  animals  in  the  housing,  and  the  stall configuration reduces competition at feeding times.  The feed trough is further designed to distribute liquid feed equally along the length of the housing.
Patent CA-1340513-C (CA)
Title: Antitumor and antiviral alkaloids
Inventor: CROSS SUE S
IPC: C07D403/14
Filed: 1988-06-21
Granted: 1999-04-27
Abstract: This invention relates to antitumor and antiviral alkaloid compositions, a process of producing the compositions and a method for inhibiting tumors and viruses utilizing the compositions. More particularly, the compositions are antitumor and antiviral bis-indole alkaloids which are derived from marine organisms, i.e., the marine sponge genus Spongosorites.
Patent CA-1324033-C (CA)
Inventor: NISKANEN TOIVO
IPC: D21B1/22
Filed: 1988-06-23
Granted: 1993-11-09
Abstract: ABSTRACT OF THE DISCLOSURE The invention relates to a method and an apparatus for treating high-consistency fiber suspension.  The method and apparatus according to the invention are especially suitable for short distance conveyances of thick fiber suspensions having consistency of more than 15%, in pulp and paper industry, for example for discharge of mass towers either with a pump or without any actual pump. The treatment of fiber suspension having consistency of more than 15% is not possible with the known technique without a displacement type of pump, which is expensive and easy to break.  Additionally, in discharging of the mass tower, drop leg, etc. fiber suspension causes trouble by arching. According to the invention, a feed apparatus (31) is arranged in the pulp chamber, which feeds fiber suspension to a fluidizing rotor (21), which fluidizes the fiber suspension, whereafter the suspension flows onwards.  On the other hand, the feeder apparatus is characterized in that it is to raise the pressure of the fiber suspension sufficiently for the fluidization, but not too high, in which case the operational members would be stressed redundantly.  For said reason fiber suspension is fed excessively to the rotor (21), whereby the feeding pressure of fiber suspension is controlled by throttling devices (34) which are arranged separate from the feeder apparatus in the back-circulation duct or passage.
Patent CA-1341223-C (CA)
Title: Adn clone de l'inhibiteur du facteur tissulaire
Inventor: BROZE GEORGE JOHN JR
IPC: A61P7/02
Filed: 1988-07-22
Granted: 2001-05-01
Abstract: Un clone d'ADNc ayant une séquence de base pour inhibiteur du facteur tissulaire (IFT) humain a été développé et caractérisé et la séquence d'acides aminés de ITF a été déterminée.
Patent CA-1339450-C (CA)
Title: Stable oxapenem-3-carboxylic acids
Inventor: PFAENDLER HANS RUDOLF
IPC: C07D205/08
Filed: 1988-07-29
Granted: 1997-09-09
Abstract: Compounds of the structural formulae (see fig.I)   or  (see fig.II) and their pharmaceutically acceptable salts, esters and amide derivatives, in which R1 and R2, independently of one another, denote hydrogen or pharmaceutically acceptable groups which have 1 to 10 carbon atoms and are bonded to the remaining part of the molecule via carbon-carbon single bonds, and in which R3, R4 and R5, independently of one another, denote pharmaceutically acceptable groups which have 1 to 10 carbon atoms and are bonded to the remaining part of the molecule via carbon-carbon single bonds, are useful antibiotics.      The trisubstitution by three groups R3, R4 and R5, which are bonded via carbon-carbon single bonds, results in a noticeable increase in the hydrolysis stability and thus also in the antibacterial action of oxa-penemcarboxylic acids.
Patent CA-1330627-C (CA)
Title: Process for the extraction of valuable metals
Inventor: ROBINSON LEE F
IPC: C22B3/06
Filed: 1988-08-12
Granted: 1994-07-12
Abstract: Abstract:           To remove valuable metal from ore, slime, tailings or the like, the matter is caused to pass in the form of a slurry along a pipeline, one or more reagents are supplied to the pipeline so that leaching takes place in the pipeline and the valuable metal is recovered at a recovery plant downstream of the pipeline.
Patent CA-1292332-C (CA)
Title: Digital signal multiplexing apparatus
Inventor: TAKASE AKIHIKO
IPC: H04J3/16
Filed: 1988-08-26
Granted: 1991-11-19
Abstract: Abstract:          A digital signal multiplexing apparatus comprises variable multiplexers each of which can alter a multi-plexed channel format every call in compliance with a subscriber's request.  A fixed multiplexer has a multi-plexing capacity an integral number of times as large as the total multiplexing capacity of the variable multi-plexers, the multiplexed channel format of which is fixed. Fixed multiplexed signal demultiplexers each fixedly demultiplexes signals in a capacity an integral number of times as large as that of each of the variable multiplexers into signals of a capacity equal to the total capacity of the variable multiplexers.  The outputs of the fixed multi-plexed signal demultiplexers are distributed to the variable multiplexers through a distributing switch network, and the outputs of the variable multiplexers are multiplexed by the fixed multiplexer.  The result is a system of greater flexibility in terms of various subscrihers' differing requirements and also in terms of facilitating future expansion.
Patent CA-1323678-C (CA)
Title: Plastic container inspection process
Inventor: HARWICK WARREN J
IPC: G01N1/10
Filed: 1988-09-01
Granted: 1993-10-26
Abstract: ABSTRACT OF THE DISCLOSURE      A container inspection process and apparatus is provided for detecting the presence of contaminants present on or absorbed into the walls of plastic containers.  The process flushes all volatiles from within the container by injecting an inert gas, subsequently draws a vapor sample from within the container and analyzes the sample for newly formed volatiles by ionization techniques.
Patent CA-1301031-C (CA)
Title: Woodworking machine with floating tool and work carriages
Inventor: DUCATE JOHN S SR
IPC: B27C5/00
Filed: 1988-09-21
Granted: 1992-05-19
Abstract: ABSTRACT OF THE DISCLOSURE         A woodworking method and apparatus including a work carriage having a base mounted on a bed for rectilinear sliding movement along a first axis in a first plane and a work platform mounted on the base for rectilinear sliding movement along a second axis parallel to the first axis and in a second plane parallel to the first plane.   A tool carriage carrying a motor driven rotary cutting tool is mounted on the bed for rectilinear sliding movement along a third axis transverse to the first and second axes.  Levers are provided for actuating movements of the base, the platform, and the tool carriage.  A gas spring may be connected with the tool carriage to counterbalance the weight of the tool carriage assembly.  A template and following stylus also may be provided for guiding the tool carriage relative to the work carriage in accordance with a predetermined pattern.   The work surface supporting a workpiece may be tilted relative to the rotational axis of the cutting tool.   Various clamping devices allow adjustment of the tool carriage,  the work carriage and their actuators.
Patent CA-1308003-C (CA)
Title: Compositions and process for metal treatment
Inventor: GRIFFITH EDWARD J
IPC: C23C22/78
Filed: 1988-09-29
Granted: 1992-09-29
Abstract: 43-21(6694)A         COMPOSITIONS AND PROCESS FOR METAL TREATMENT            ABSTRACT Compositions and processes for activating metal surfaces prior to coating with a phosphate compound are disclosed.  Colloidal alkyl benzene sulfonate salts are disclosed as a novel class of activating materials to replace titanium containing Jernstedt salt baths for treatment of metal surfaces prior to coating with a protective phosphate material.
Patent CA-1325409-C (CA)
Inventor: LARSSON LENNART
IPC: B29L7/00
Filed: 1989-02-10
Granted: 1993-12-21
Abstract: ABSTRACT OF THE INVENTION      A machine  for  applying  adhesive  on  one  side  of  an elongate  sheet  material,  and  comprising  an  adhesive containing trough     , an adhesive application roller and a driven pressure roller     . The sheet material      is being passed through the nip between said rollers and the width  of  the  rollers  surpasses  the  width  of  the sheet material.  The contact surface of the pressure roller upon the sheet     , consists of an endless belt     . The belt      runs via at least one guide roller      through a trough     , containing rinsing fluid     . In said trough the belt       runs past at least one further guide roller , and past a brush roller      which is mounted in the trough     , adjacent the outer side of the endless belt loop . The brush roller is being driven in counter rotation to the direction of movement of the belt. The belt then runs back to the pressure roller     , so that the section of the endless belt loop which has been driven past the rinsing fluid trough      and the brush roller     , returns to the-nip free from adhesive
Patent CA-1336487-C (CA)
Inventor: TAKASU HIROSHI
IPC: C08L23/00
Filed: 1989-03-08
Granted: 1995-08-01
Abstract: A cleaning resin composition by the use of which it is possible to effect color exchange inside various molding machines by exchanging the composition for the preceding colored resin or to clean the inside of the machines or to effect resin exchange for the preceding resin inside the machines, in a small quantity of the composition, in a simple operation and in a short time is provided, which composition comprises a polyolefin resin such as polyethylene, polypropylene, etc. and a neutral salt of an alkylbenzenesulfonic acid, an inorganic filler and a water-repellent compound blended with the polyolefin resin.
Patent CA-1319949-C (CA)
Title: Method and apparatus for controlling the magnetic flux of an induction motor
Inventor: WATANABE EIJI
IPC: H02P23/07
Filed: 1989-03-28
Granted: 1993-07-06
Abstract: ABSTRACT OF THE DISCLOSURE:           This invention relates to an induction motor magnetic flux control method and apparatus in a vector control device in which a primary current is supplied to the induction motor in response to an excitation current command value and a torque current command value and the  frequency is controlled as a function of the magnetic flux calculated from the voltage and current applied to the motor, in which the magnetic flux is calculated as a function of the voltage,  current of the motor and a magnetic flux command signal by using a primary delay circuit, the time constant of the primary delay circuit is set equal to that of the secondary circuit of the motor. According to this invention, it is possible to minimize the phase error with respect to the true secondary magnetic flux included in the secondary magnetic flux value,  which leads to an accurate torque control.
Patent CA-1341007-C (CA)
Title: Alkyl- and alkenylsulfonylureas which are substituted in the heterocycle, processes for their preparation, and their use as herbicides or plant growth regulators
Inventor: BAUER KLAUS
IPC: C07D251/46
Filed: 1989-04-07
Granted: 2000-05-30
Abstract: Alkyl-and alkenylsulfonylureas which are substituted in the heterocycle, processes for their preparation, and their use as herbicides or plant growth regulators Compounds of they formula I, their stereoisomers or their salts (see formula I) where in A denotes >C(R4)2 or >C=C(R5)2; R1 denotes H, an optionally substituted aliphatic or cycloaliphatic radical, furfuryl, tetrahydrofurfuryl or (substituted) phenyl;      R2 denotes H, alkyl, alkenyl, alkynyl or alkoxy; R3 denotes a radical of the formulae (see formula II to IX) X denotes O, S or NR12 and Y denotes O or S, possess excellent herbicidal and plant-growth regulating properties.
Patent CA-1326130-C (CA)
Inventor: EPPERLY WILLIAM R
IPC: B09B3/00
Filed: 1989-06-08
Granted: 1994-01-18
Abstract: METHOD AND COMPOSITION FOR THE REDUCTION     OF AMMONIA EMISSIONS FROM NON-ACIDIC RESIDUE                      Abstract A  method  and  composition  for  reducing  ammonia emissions  from  non-acidic residue from the combustion of   a   carbonaceous  fuel,  such  residue  containing ammonium  salts  or absorbed ammonia, is presented, the method  comprising  applying  to  the  residue either a physical   barrier   composition,  a  chemical  barrier composition,  or  both,  under  conditions effective to reduce the emission of ammonia from the residue.
Patent CA-1324929-C (CA)
Title: Hay bale feeder
Inventor: THIESSEN CORNELIUS
IPC: A01K5/01
Filed: 1989-06-28
Granted: 1993-12-07
Abstract: ABSTRACT      This invention is a livestock feeder, particularly to feed cylindrical bales to cattle.   The basic form has an upper circular rail to receive a bale and a lower larger circular rail which may rest on the ground, connected by an array of inclined struts to form animal feeding spaces.  The animals do not tend to catch their heads with the upper rail, as in prior art devices, and move the feeder. Similarly there is less ground contact, than in prior art devices, so the feeder can be moved without breaking when the ground is frozen.  Two optional features are a sheet metal base surround, which enables the feeder to be used for cut feed and silage, as well as bales, and a top guide or throat to receive and support the bale.  The top guide can be heightened so that the feeder can contain two bales at a time.
Patent CA-1319033-C (CA)
Inventor: TAMAMORI HIDEO
IPC: F16D65/28
Filed: 1989-08-18
Granted: 1993-06-15
Abstract: (Case No. 8550) ABSTRACT OF THE INVENTION   A force transfer mechanism including a force lever through which an input force is transmitted to an output member with mechanical advantage only after the output member encounters sufficient resistance to overcome a friction connection between an input member and the output member indicative of the input member having moved from a retracted position to an operative position.  The resultant movement of the input member relative to the output member in the absence of the frictional connection therebetween allows the input member to engage the end of force lever that is normally spaced-apart therefrom and to accordingly drive the output member with a force corresponding to the input force multiplied by the ratio of the force lever only in the operative position of the input member.