baber/WOPTO huggingface dataset:
Patent CA-2058125-C (CA)
Title: Method and apparatus for separation of heavy and light particles from particulate material
Inventor: PARKER MICHAEL PATRICK
IPC: B07B4/08
Filed: 1991-12-19
Granted: 1999-09-14
Abstract: Apparatus for the separation of heavy and light particles from particulate material which includes means for fluidising and agitating the material to cause heavy particles to sink from the acceptable material and comprising a deck adapted to receive material at a reception end and means for vibrating said deck to cause the material to move longitudinally along it to a discharge end, said deck having a number of longitudinally extending troughs separated by peaks and providing an upwardly directed air flow in the troughs characterised by control means for causing the velocity of the upwardly directed fluidising air in each trough to initially increase to a point below the peaks and to then continue upwards at a reducing velocity.
Patent CA-2061290-C (CA)
Title: Sifting drum
Inventor: LANGE WERNER
IPC: D21D5/16
Filed: 1992-02-17
Granted: 1998-05-05
Abstract: A sifting drum which features sifting bars mounted along a cylindrical surface in parallel to the central cylinder axis, with the spaces between sifting bars forming the sifting gaps. The sifting bars are held by supporting rings in an axially equidistant configuration circumferentially to the cylinder circumference in peripherally open recesses in the supporting rings. The invention is characterized by the sifting bars relative to the sight line having lateral surfaces in a direction radial (V) to the sifting drum. At least one of these lateral surfaces in inclined by an angle away from the radius (V), resulting in a conicity between the two lateral surfaces of between 14 and 35° which corresponds at least to a major extent to the corresponding lateral surfaces of the supporting ring recesses. Consequently, when supporting bars of the appropriate length are transformed into supporting rings, the sifting bars are clamped into the supporting rings at these points, with at least one of the lateral surfaces of the sifting bars having at least one projection or one cutout corresponding to an opposing cutout or projection, as the case may be, in the recesses of the supporting ring.
Patent CA-2065593-C (CA)
Inventor: KURODA RYO
IPC: G01P15/08
Filed: 1992-04-08
Granted: 1999-01-19
Abstract: A cantilever unit comprises a cantilever for supporting a probe and a displacement amount detecting means, the displacement amount detecting means being integrated with the cantilever.  An information processing apparatus comprises the cantilever unit and optionally an information recording medium stationed in close vicinity to the unit, wherein an information in the medium is reproduced at a signal on the basis of an displacement amount of the cantilever.  An atomic force microscope and magnetic force microscope comprise the cantilever unit, respectively.
Patent CA-2066326-C (CA)
Title: Novel internal release agents, active hydrogen containing mixtures which contain such agents and the use thereof in a process for the production of molded products
Inventor: MAFOTI ROBSON
IPC: C08K5/17
Filed: 1992-04-16
Granted: 2002-05-28
Abstract: The present invention is directed to a novel internal release agent, a mixture of isocyanate reactive materials containing the release agent and a RIM process using the release agent. The novel release agent is an ester prepared by reacting a specific tetrol with a mixture of a saturated and an unsaturated acid.
Patent CA-2068751-C (CA)
Title: Image coding system
Inventor: MURAKAMI TOKUMICHI
IPC: H04N7/50
Filed: 1992-05-15
Granted: 1998-05-19
Abstract: An image coding system determines an amount a data that is output by a coder of the system and also determines a target code produced amount based on the motion of an input image.  The coder of the coding system encodes the input image.  A record of a data amount of past coded data is used as the inference of the target code amount.  Hence, proper coding can be performed in a sending side.  Further, by converting the data amount into a value with a condition to be standard, accuracy of the inference may be improved.  In addition, an indication of the power amount of the data to be coded is used as a factor for determining a target code produced amount to expedite a combination of a plurality of coding modes.
Patent CA-2070266-C (CA)
Inventor: MCCORMACK ANN L
IPC: D04H1/46
Filed: 1992-06-02
Granted: 2003-01-07
Abstract: Disclosed is a process of making an superabsorbent composite material which contains a hydraulically-needled fibrous web and superabsorbent materials. The method includes the steps of providing a nonwoven fibrous web; hydraulically needling the nonwoven web to enhance its liquid distribution properties; and introducing dry superabsorbent materials into intimate bonding contact with at least one surface of the hydraulically needled fibrous web. Also disclosed is the superabsorbent nonwoven composite material made by the described process. The hydraulically needled fibrous web component of the material may contain pulp fibers, synthetic fibers, natural fibers, bicomponent fibers, continuous filaments or mixtures thereof.      The superabsorbent composite material has a saturation capacity greater than about 500 percent and a wicking rate greater than about 12 centimeters per 15 minutes. The superabsorbent composite material may be used as a liquid management material in an absorbent product or absorbent structure.
Patent CA-2070477-C (CA)
Title: Gear pump for oil for an internal-combustion engine, in particular for motor vehicles
Inventor: HOFFMANN KURT
IPC: F04C2/10
Filed: 1992-06-04
Granted: 2003-09-02
Abstract: The invention relates to a gear pump for oil for an internal-combustion engine, in particular for motor vehicles, comprising a pump housing mounted on the motor and an outer rotor which is arranged in the pump housing, an inner rotor additionally being arranged within the outer rotor or within the pump housing and at least one suction and/or at least one pressure passage being provided in the pump housing, a drive further being present; the pump according to the invention is integrated in a drive wheel or guide pulley of the internal-combustion engine and the outer rotor or the outer rotors are driven by the drive wheel or the guide pulley.
Patent CA-2071323-C (CA)
Title: Apparatus and process for printing large graphics
Inventor: DOCHOVNA RAMI YORAM
IPC: B41J2/01
Filed: 1992-06-16
Granted: 2004-03-30
Abstract: An apparatus for printing large graphics, particularly in colors, comprises at least a printing station, means for supporting a print substrate in continuous sheet form and for imparting thereto an intermittent, incremental, longitudinal feed motion, whereby intermittently to feed it in front of the printing station, means for imparting to the printing station an alternating, transversal, scanning motion relative to the print substrate, means for synchronizing said alternating, scanning and said incremental, feed motions, and means for controlling said printing station to deposit ink dots on the surface of said material in such a way as to produce the desired graphic patterns.
Patent CA-2075247-C (CA)
Title: Cancer therapy system
Inventor: DEGAWA SADAO
IPC: A61N5/06
Filed: 1992-08-04
Granted: 1997-11-11
Abstract: In a solid-state laser, a YAG laser generates a laser beam with a predetermined wavelength in response to which a titanium-sapphire laser is pumped to generate a laser beam with a predetermined wavelength which is administered through a fiberscope to irradiate focuses, treating or destroying the same.
Patent CA-2076994-C (CA)
Title: Impeller for a propeller pump
Inventor: ARBEUS ULF
IPC: F04D29/18
Filed: 1992-08-27
Granted: 1995-09-05
Abstract: The hub is conically formed, and the vanes attached thereto are given a substantially radial direction; consequently, the turning axes of the vanes are situated in the center of the vanes, substantially bisecting the center of the vane chords.  The turning axes are perpendicular to the impeller shaft.
Patent CA-2081218-C (CA)
Title: Method of controlling noxious animals
Inventor: THOMASSEN JAN M
IPC: A01N59/00
Filed: 1992-10-23
Granted: 1998-06-30
Abstract: An agent for controlling parasites on fish consists of an aqueous solution containing more than 1.2 but less than 2.9 g H2O2 per litre. Disclosed are also a method for preparing such an agent and a method for controlling parasites in fish breeding.
Patent CA-2081795-C (CA)
Inventor: OETIKER HANS
IPC: F16L13/02
Filed: 1992-10-30
Granted: 2002-05-14
Abstract: In a connection of two edges of areal parts which extend at least along one common section essentially parallel to one another, at least one retaining element is arranged at the one edge which form-lockingly engages from behind, as viewed in the edge direction, in a recess in the other edge. At least one projection arranged laterally offset at the one edge in relation to the retaining element in the direction of the engagement from behind, abuts form-lockingly at the part with the recess essentially in the edge direction. To reliably secure together the parts, laser beam welding is used along the common sections of at least one of the retaining element and of the projection.
Patent CA-2088026-C (CA)
Inventor: SATO JUNICHIRO
IPC: D21C7/06
Filed: 1993-01-25
Granted: 2003-05-13
Abstract: In an apparatus and method for controlling the position of a rotor in a truncated conical feeder for feeding a feed comprising a lignocellulose material and an alkaline cooking liquor to a pulping digester; the position of the rotor in the feeder is detected by a rotor position detector; and a signal indicating the detected position is input to a control device; the rotor is moved at a distance of 0.03 to 0.4 mm every 0.3 to 4 days by driving an electric motor and moving a shaft of the rotor in response to a signal, when the rotor is moved a predetermined distance, and the rotor-moving motor is stopped by a signal input from the control device.
Patent CA-2088842-C (CA)
Title: Cart for medication
Inventor: BEARDSLEY DUANE
IPC: B62B5/00
Filed: 1993-02-04
Granted: 1998-06-23
Abstract: A medication cart has a base formed of a pair of molded plates interconnected by rails.   The plates have molded grooves and holes  for receiving structural  elements  of  the  cart.   Molded  hollow plastic end panels have horizontal ribs that support drawers.  The end panels are seated in grooves in the base plates.  A top cap covers the top of the cart.          Locking bars which can be made to automatically open are provided to secure the drawers in the cart.
Patent CA-2091341-C (CA)
Title: An advanced overfire air system for no _control
Inventor: MARION JOHN LEONARD
IPC: F23C99/00
Filed: 1991-06-24
Granted: 1995-12-05
Abstract: An advanced overfire air system for NOx control designed for use in a firing system of the type that is particularly suited for use in fossil fuel-fired furnaces and a method of operating such a furnace which embodies an advanced overfire air sys-tem. The advanced overfire air system for NOx control includes multi-elevations of overfire air compartments consisting of a plurality of close coupled overfire air compartments (84, 86) and a plurality of separated overfire air compartments  (94, 96, 98). The close coupled overfire air (84, 86) compartments are supported at a first elevation in the furnace (10) and the sepa-rated overfire air compartments (94, 96, 98) are supported at a second elevation in the furnace (10) so as to be spaced from but aligned with the close coupled overfire air compartments (84, 86). Overfire air is supplied (106, 92) to both the close coupled overfire air compartments (84, 86) and the separated overfire air compartments (94, 96, 98) such that there is a predeter-mined most favorable distribution of overfire air therebetween, such that the overfire (106) air exiting from the separated over-fire air compartments (94, 96, 98) establishes a horizontal "spray" or "fan" distribution (124, 126, 128) of overfire air over the plan area of the furnace, and such that the overfire air (106) exits from the separated overfire air compartments (94, 96, 98) at velocities significantly higher than the velocities em-ployed heretofore.
Patent CA-2093228-C (CA)
Inventor: DENT PAUL W
IPC: H04W88/00
Filed: 1992-07-31
Granted: 2000-07-04
Abstract: Subtractive CDMA demodulation optimally decodes a coded information signal embedded in many other overlapping signals making up a received, composite signal. A radio receiver correlates a unique code corresponding to the desired signal to be decoded with the composite signal. Moreover, after each information signal is successfully decoded, it is recoiled and removed from the composite signal. Subtractive CDMA demodulation is enhanced by decoding the composite signal in the order of strongest to weakest signal strength.      The individual information signals are spread using block error correction codes which are correlated with the composite signal using Fast Walsh transforms. Correlated signals identified as the largest transform component are removed from the composite signal and the remaining composite signal is reformulated using an inverted Fast Walsh transform. Any residual error or interference caused during the extraction of a transform component is removed by correlating the composite signal using the index of that transform component.
Patent CA-2093259-C (CA)
Title: Frequency dependent optical isolator
Inventor: BARNARD CHRIS
IPC: H04B10/17
Filed: 1993-04-02
Granted: 2004-07-06
Abstract: A frequency dependent optical isolator is provided which allows two signals transmitted on a single optical fiber to be isolated in dependence upon their frequencies. A signal having a frequency f1 propagates through the isolator in one direction from a first input/output port to a second input/output port and is prevented from propagating in the reverse direction. A signal having a frequency f2 propagates through the isolator from the second input port to the first input port and is prevented from propagating in the reverse direction. After either of the signals propagates through the isolator from one input/output port to the other, the isolator prevents the respective signal from traveling backwards in a reverse direction through the isolator. The frequency dependent isolator may be used with an amplifier or may amplify one or more of the signals propagating through.
Patent CA-2095710-C (CA)
Inventor: SIMONIAN SAM
IPC: G01F1/7086
Filed: 1993-05-06
Granted: 2003-08-12
Abstract: A method of measuring the flow rate of a continuous phase in a flowing multiphase fluid comprises measuring a velocity of the fluid by thermal anemometry at a location in the flow and simultaneously measuring the passage of a discontinuous phase at the same location using a local probe system, and using the measurement of the discontinuous phase to correct the measurement of the continuous phase so as to derive the flow rate thereof. Apparatus for performing the method comprises a thermal anemometer positioned at a location in the flow, a local probe system at the same location as the thermal anemometer and capable of measuring the passage of a discontinuous phase, and means for using the measurement from the local probe system to correct the measurement from the thermal anemometer so as to derive the flow rate of the continuous phase.
Patent CA-2098919-C (CA)
Inventor: ASHLEY TIMOTHY
IPC: H01L29/73
Filed: 1991-12-19
Granted: 2001-10-30
Abstract: A semiconductor device in the form of a metal insulator field effect transistor (MISFET) (200) is constructed as a heteros-tructure of narrow bandgap In1-x Al x Sb semiconductor materials. The MISFET  (200) is formed from four semiconducting layers (112 to 118) arranged in series as follows: a heavily doped p-type first layer (112), a heavily doped relatively wider bandgap p-type second layer (114), a lightly doped p-type third layer (116) and a heavily doped n-type fourth layer (118). A source (202) and a drain (204) are formed in the fourth layer (118) and a gate (116/205) in the third layer. An n+p- junction (124) is formed between the third and fourth layers and a p+p- junction (122) between the second and third layers. The sec-ond layer (114) provides a conduction band potential energy barrier to minority carrier (electron) flow to the gate (116/205), and is sufficiently wide to prevent tunnelling of minority carriers therebetween. The first and second layers (112, 114) in combination provide a p+p+ excluding contact to the third layer (116). The n+p-junction (124) between the third and fourth layers (116, 118) is an extracting contact; when reverse biased in operation, this junction (124) extracts minority carri-ers from the region of the third layer (116) adjacent the collector (118/204).  In operation, the third layer (116) incorporating the gate (205) becomes depleted of charge earners and therefore exhibits greatly reduced leakage current. In consequence, the MISFET (200) has good dynamic range in terms of controllable drain current. The invention also provides bipolar tran-sistors (300, 400) and related devices.
Patent CA-2100089-C (CA)
Title: Container, in particular container for vegetables, made from plastic material and having foldable side walls
Inventor: UMIKER HANS
IPC: B65D1/22
Filed: 1993-01-15
Granted: 1998-05-19
Abstract: In a container made from plastic material, including a container bottom and four side walls foldable in the inside in direction to the container bottom, the container is formed in one piece and the folding joints of the four side walls are formed by film-like hinges at the lower longitudinal rim of the side walls.
Patent CA-2105768-C (CA)
Title: Process for the manufacture of 2,2,4,4-tetramethylcyclobutanediol
Inventor: SUMNER CHARLES EDWAN JR
IPC: C07C49/39
Filed: 1992-08-19
Granted: 1996-10-22
Abstract: Disclosed is a novel process for the manufacture of 2,2,4,4-tetramethylcyclobutanediol commencing with the pyrolysis of isobutyric anhydride to produce  dimethylketene.   Dimethylketene is absorbed into certain carboxylate ester solvents which func-tion as the process solvents  for  subsequent dimerization of the dimethylketene to 2,2,4,4-tetramethylcyclobutanedione followed by the catalytic hydrogenation of the  dione to the diol product.
Patent CA-2107178-C (CA)
Inventor: WU YULIN
IPC: C08J7/04
Filed: 1993-09-28
Granted: 1997-12-02
Abstract: A process has been developed for treating plastic and plastic composite materials wherein a protective epoxy coating is placed on said material by contacting with a composition comprising an epoxy resin, an effective amount of curing agent for the epoxy resin, an alcohol and a hydrocarbon solvent.  In another embodiment, the protective epoxy coating is applied by a process comprising the sequential contacting of the plastic or plastic composite surface with a first hydrocarbon solution comprised of an epoxy resin and a hydrocarbon solvent, and a second hydrocarbon solution comprised of an alcohol, a curing agent, and a hydrocarbon solvent.
Patent CA-2107544-C (CA)
Title: Method of providing fuel for an iron making process
Inventor: GREENWALT RICHARD B
IPC: C21B13/00
Filed: 1993-10-01
Granted: 1997-07-15
Abstract: The invention provides a method for both disposing of an environmentally undesirable material comprising petroleum coke and the sulfur and heavy metals contained therein and of providing fuel for a process of making molten iron or steel preproducts and reduction gas in a melter gasifier having an upper fuel charging end, a reduction gas discharging end, a lower molten metal and slag collection end, and means providing an entry for charging ferrous material into the melter gasifier; introducing petroleum coke into the melter gasifier at the upper fuel charging end; blowing oxygen-containing gas into the petroleum coke to form at least a first fluidized bed of coke particles from the petroleum coke; introducing ferrous material into the melter gasifier through the entry means, reacting petroleum coke, oxygen and particulate ferrous material to combust the major portion of the petroleum coke to produce reduction gas and molten iron or steel preproducts containing heavy metals freed from combustion of the petroleum coke and a slag containing sulfur freed from combustion of the petroleum coke.
Patent CA-2108071-C (CA)
Title: An activator-frother composition
Inventor: FERNANDEZ HECTOR C
IPC: B03D1/018
Filed: 1993-10-08
Granted: 1999-02-16
Abstract: An activator-frother composition which has good selectivity can be employed as additional reagent for the flotation of minerals of finely divided sulfide type and as sole reagent for the retreatment of flotation tailings. The composition consists of approximately 1% to 10% and preferably 2% to 8% by weight of pine oil,   approximately 10% to 30% and preferably 12% to 20% by weight of sodium sulfide (Na2S) in 10% solution,   approximately 15% to 36% and preferably 22% to 34% by weight of hydrogen peroxide (H2 0 2) in 50% solution,  and approximately 20% to 40% and preferably 25% to 38% by weight of sodium bicarbonate (NaHCo3).
Patent CA-2117699-C (CA)
Title: Propylene polymer compositions
Inventor: HASHIMOTO MIKIO
IPC: C08F4/642
Filed: 1994-01-11
Granted: 2001-05-29
Abstract: A propylene polymer composition comprising a propylene polymer (A1) prepared by using a metallocene catalyst and having a melt flow rate (MFR) of 0.01 to 30 g/10 min and a propylene polymer (A2) prepared by using a metallocene catalyst and having a melt flow rate (MFR) of 30 to 1,000 g/10 min and, if desired, a soft polymer, a ratio [(A2)/(A1)] of the MFR of said propylene polymer (A2) to the MFR of said propylene polymer (A1) being not less than 30.    A propylene polymer composition comprising a propylene polymer prepared by using a titanium catalyst and having MFR of 0.01 to 30 g/10 min and the above-mentioned propylene polymer (A2) and, if desired, a soft polymer.    A propylene polymer composition comprising a propylene polymer prepared by using a titanium catalyst and having MFR of 0.01 to 50 g/10 min and an ethylene/olefin random copolymer prepared by using a metallocene catalyst.    A propylene polymer composition comprising a propylene polymer prepared by using a catalyst containing a specific metallocene compound and at least one synthetic resin selected from a propylene polymer different from the above propylene polymer, an olefin elastomer and an olefin polymer.    These propylene polymer compositions are excellent in heat resistance, mechanical strength, tensile elongation at break, etc., and hence they can be favorably used for various structural materials such as those of automobiles and electrical appliances, daily necessaries, various films and sheets.
Patent CA-2123974-C (CA)
Title: Cigarette and method and system for manufacturing the same
Inventor: OKUMOTO YUTAKA
IPC: A24D1/00
Filed: 1994-05-19
Granted: 1997-12-30
Abstract: A cigarette manufacturing system comprising a cut tobacco supply section including first supply means having a first suction surface travelling in one direction having means for attracting cut tobacco in a layer to the first suction surface  and  delivering  the  attracted  cut  tobacco  layer continuously as the first suction surface travels, folding means for folding the cut tobacco layer from the first supply means into layer portions and piling the layer portions on one another in the direction of delivery of the cut tobacco layer to form a cut tobacco train, and second supply means having a second suction surface traveling in the one direction having means for attracting the cut tobacco train from the folding means  to  the  second  suction  surface  and delivering  the attracted cut tobacco train continuously as the second suction surface travels.  Wrapping means are provided for forming a continuous cigarette rod in a manner such that the cut tobacco train from the second suction surface is received on a paper web traveling in the one direction and is wrapped in the paper web.  Cutting means are also provided for cutting the formed cigarette rod into individual cigarettes.