baber/WOPTO huggingface dataset:
Patent CA-2008029-C (CA)
Title: Method of working up a raffinate of an extractive distillation of a hydrocarbon mixture and apparatus for same
Inventor: EMMRICH GERD
IPC: C10G7/08
Filed: 1990-01-18
Granted: 1996-11-19
Abstract: In this process the hydrocarbon material of the starting product is separated in an extractive distillation column in which an N-substituted morpholine whose substituents do not have more than seven carbon atoms is used as a selective solvent. The raffinate comes down as a top product of the extractive distillation and is fed through a coalescer in which the sump product comes down with a solvent content of 20 to 75 % by weight at a temperature of 20 to 70°C and subsequent to that is fed into a separating vessel.  There it is separated into a heavier and lighter phase.  After that the heavier phase is conducted into an extractive distillation column and the lighter phase into the raffinate distillation column.
Patent CA-2008546-C (CA)
Inventor: DUTT WILLIAM H
IPC: D21F3/02
Filed: 1990-01-26
Granted: 1994-03-15
Abstract: A belt for use on an extended nip press for dewatering a fibrous web is shown.   The belt includes a base fabric having machine-direction and cross-machine direction yarns and takes the form of an endless loop.   At least one of the machine-direction and cross-machine direction yarns is a spun yarns of staple fibers.  The base fabric is completely coated and impregnated with a polymeric resin, such as polyurethane, to render it impervious to liquids, especially lubricating oil.  The inner surface of the resulting belt slides over the arcuate pressure shoe component of the extended nip press during its operation.   The outer surface of the belt is provided with grooves separated by land areas which together define channels for water pressed from the fibrous web in the press nip.  The land areas are anchored to the belt by means of staple fibers from the spun yarns embedded in the coating and are not susceptible to delamination.
Patent CA-2009398-C (CA)
Title: Preconditioned atf fluids and their preparation
Inventor: PAPAY ANDREW G
IPC: C10L1/22
Filed: 1990-02-06
Granted: 2000-01-11
Abstract: Preconditioned automatic transmission fluids are made by using a preblend formed by heating an alkenyl succinimide or succinamide dispersant with a phosphorus ester and water to partially hydrolyze the ester and then mixing the preblend and other additives with a base oil.
Patent CA-2009878-C (CA)
Title: Dock leveler
Inventor: ALEXANDER JAMES C
IPC: B65G69/28
Filed: 1990-02-13
Granted: 1993-06-22
Abstract: ABSTRACT OF THE DISCLOSURE         A dock leveler having a rigid flat deck and a rigid hinge pin coupling the leveler to a loading dock or leveler frame element.   The deck is supported by a series of  spaced box beams,  each  one  split longitudinally to provide  the  necessary torsional  flexibility to allow a rigid hinge pin.   The use of a box beam geometry still serves to provide the required load support for the deck.
Patent CA-2019471-C (CA)
Title: Child powered bicycle trailer
Inventor: O'CONNOR RICHARD J
IPC: B62K27/12
Filed: 1990-06-21
Granted: 1993-11-09
Abstract: ABSTRACT OF THE DISCLOSURE A single wheeled trailer for carrying an occupant is provided. The frame of the trailer is comprised of tow bar members of rectangular cross section and two non-symmetrical rear fork member which retain the single wheel. A hitch connected to a driving bicycle tows the trailer. A pedal assembly coupled to the frame enables the occupant to power the trailer wheel. The occupant of the trailer is forward facing and may help power the bicycle or be towed by the prime mover. The frame design allows ease of mounting and dismounting of the child.
Patent CA-2024027-C (CA)
Title: Sealed lining tube for lining of pipelines or passageways
Inventor: SMITH EDWARD PETER
IPC: F16L59/147
Filed: 1990-08-27
Granted: 2001-05-08
Abstract: The method provides that a lining tube impregnated with synthetic resin is applied to the inner surface of a pipeline or passageway to line same. A pre-lining tube is either connected to the leading end of the lining tube so that the lining tube can be inserted by everting the pre-lining tube into the pipeline or passageway which pulls the lining tube into position, or the lining tube is connected at its trailing end to an inflation tube which is pulled into position as the lining tube enters the pipeline or passageway and subsequently the inflation tube is everted into the inside of the lining tube to inflate same. In the preferred case the assembly comprises a pre-lining tube connected at the leading end to the lining tube, and an inflation tube connected at the trailing end of the lining tube.
Patent CA-2024530-C (CA)
Title: Edger with belt braking device
Inventor: BRAUN STEPHEN A
IPC: A01D34/47
Filed: 1990-09-04
Granted: 1994-01-25
Abstract: EDGER WITH BELT BRAKING DEVICE                ABSTRACT OF THE DISCLOSURE    The present invention relates to an edger with a belt braking device, including a belt driving device and a cutter blade, which are arranged at the side of an edger vehicle.  A bearing housing portion of the cutter blade is provided for forward and rearward movement, a belt cover for covering the whole driving belt is fixed to the edger vehicle, and a belt braking device is arranged between the front end of the belt cover and the front driven pulley, whereby performing ON-OFF operation of a clutch and engagement/ disengagement of a brake simultaneously is enabled.  In this way, the fixed belt cover can be compact and the operation for changing of working conditions can be simplified.
Patent CA-2025746-C (CA)
Title: Process for the recovery of a water-insoluble epoxy alcohol
Inventor: SHUM WILFRED PRO-SUM
IPC: B01D3/10
Filed: 1990-09-19
Granted: 2001-02-06
Abstract: Water-insoluble crystallizable epoxy alcohols such as phenyl glycidol are recovered from epoxidation reaction mixtures by washing the mixture with water, concentrating the mixture by distillation under vacuum to remove unreacted hydroperoxide and alcohol co-product, and crystallizing the epoxy alcohol from solution. Minimal decomposition of the epoxy alcohol is observed.
Patent CA-2028020-C (CA)
Title: Sieve screen deck and separation method
Inventor: LEES JEREMY JAMES
IPC: B07B1/00
Filed: 1990-09-19
Granted: 1999-03-23
Abstract: A process for the recovery of coal particles having a maximum dimension of less than 2 mm from coal tailings including the steps of forming a slurry (101) of tailings having a pulp density of from 10 to 30% by weight; feeding the slurry into a hydrocyclone (103) to produce an underflow second stream which contains the tailing particles over a predetermined size and some of the gangue particles smaller than that size and an overflow stream containing the coal particles smaller than the predetermined size and the balance of the gangue particles, the hydrocyclone (103) being operated such that the underflow stream has a pulp density of from 40% to 60% by weight; adjusting the pulp density of the second stream if required, to from 20 to 50% by weight; passing the repulped second stream over a rapped or vibrated sieve screen deck (105) having a wedge wire sieve screen with a radius of less than 2  m, an arc angle of from 45° to 60° and a slot aperture of from 80 microns to 500 microns to form a stream of coarse particles substantially all having a particle size greater than 65 microns; and passing the coarse particle stream from the sieve screen deck, after repulping to a pulp density of from 20 to 50% by weight, to a spiral separator (108) for fractionation according to density to separate the coal from the gangue.
Patent CA-2032323-C (CA)
Title: Process for the preparation of 2,2-dimethylpropane-1,3-diol
Inventor: LAPPE PETER
IPC: C07C29/80
Filed: 1990-12-14
Granted: 1998-04-28
Abstract: The invention relates to a process for the preparation of 2,2-dimethylpropane-1,3-diol  by  an  addition  reaction between isobutyraldehyde and formaldehyde in the presence of tertiary amines as the catalyst, hydrogenation of the reaction mixture and subsequent distillation. Before the distillation, formaldehyde is added to the hydrogenation product to remove troublesome basic impurities.
Patent CA-2033282-C (CA)
Inventor: KISHIKAWA KENJIRO
IPC: B65D5/74
Filed: 1990-12-27
Granted: 1999-01-05
Abstract: The present invention relates to a pouring plug used for paper containers filled with juice, milk and the like. The present invention relates to a pouring plug having a flange portion corresponding to a peripheral surface portion of a fitting hole of a container body and being mounted from inside of the container body, in which a plurality of projecting portions are provided, at a height position larger than a thickness dimension of a structural member of the container body from the flange portion, on the peripheral surface portion corresponding to the inner peripheral edge of the fitting hole, whereby when the pouring plug is inserted and arranged in the fitting hole, the projecting portions are completely withdrawn on the surface side of the container body to assume the state where the plug is positively temporarily fixed, and the step of supersonic deposition is carried out without any trouble.
Patent CA-2033307-C (CA)
Title: Reproducing apparatus for a disc
Inventor: MIURA YOSHIHIRO
IPC: G11B7/0037
Filed: 1990-12-27
Granted: 2000-09-12
Abstract: A reproducing apparatus for a disc in which data recorded on an optical disc are read out by an optical pickup and reproduced, is disclosed. Before start of reproduction, it is determined if the disc loaded into the apparatus is a data disc on which information data such as letter or character data or picture data are recorded, or an audio disc on which audio signals are recorded, and the playback mode is automatically selected as a function of the type of the optical disc loaded into the apparatus. At the start time of the reproducing operation from the disc, the type discriminating data recorded on the disc are read out and, as a function of the contents of the type discriminating data, switching is made automatically between the data reproducing operation and the audio signal reproducing operation, while the type of the optical disc is displayed on the display section on the basis of the type discriminating data.
Patent CA-2041229-C (CA)
Title: Projection tv deflection loss protection circuit
Inventor: NORMAN MARVIN N
IPC: H04N3/20
Filed: 1991-04-25
Granted: 1994-03-01
Abstract: ABSTRACT A voltage at a control grid of a cathode ray tube is generated at a blanking level to provide beam current blanking when horizontal deflection loss occurs. The control grid voltage at the blanking level is developed in a capacitor prior to an instant in which the horizontal deflection loss occurs. When the capacitor voltage is applied to the control grid to provide the blanking level, the capacitor is discharged slowly. To maintain the capacitor charged, prior to such instant when horizontal deflection is lost, the capacitor voltage is not applied to the control grid as long as the horizontal deflection is normal, regardless of whether vertical deflection loss occurs. Either horizontal deflection loss or vertical deflection loss will disable a video driver stage that controls the cathode of the cathode ray tube for providing additional beam current blanking capability.
Patent CA-2045133-C (CA)
Title: Ball valve
Inventor: HORVEI KNUT V
IPC: F16K5/06
Filed: 1990-01-12
Granted: 2000-04-04
Abstract: The invention relates to a ball valve of the type comprising a ball member provided with two axially displaceable sleeves adapted to be displaced outwards to sealing engagement against seats provided in the surrounding valve housing in the open position of the valve, so as to form a flow passage through the valve, and which comprises a hollow drive axle for the rotary movement of the ball member between the open and a closed position, and a drive spindle through the hollow drive axle adapted to bringing about the axial displacement movement of the sleeves. On the drive spindle and for rotation together with it there are provided two preferably disc-shaped, first cam members on either side of the sleeves, and the sleeves are provided with corresponding and cooperating second cam members for the axial displacement by rotation of the drive spindle in relation to the ball member. The ball valve has particularly interesting uses in the oil related industry and on oil rigs or the like.
Patent CA-2050058-C (CA)
Title: Recombinant mite allergen
Inventor: OKA SATORU
IPC: C12N15/29
Filed: 1991-08-27
Granted: 2001-06-12
Abstract: The present invention is directed to a recombinant mite allergen obtainable by expression of a mite-body-derived gene, a gene which codes for said allergen, a mite allergen fragment, a polypeptide having an epitope contained in said allergen, an expression vector capable of expressing the gene, a bacterium, yeast or mammalian cell transformed with said expression vector, a method for producing said allergen, and a pharmaceutical composition or a diagnostic reagent for the treatment of mite allergic diseases.
Patent CA-2058942-C (CA)
Title: Modular mass-flow bin
Inventor: JOHANSON JERRY R
IPC: B65D88/28
Filed: 1990-04-13
Granted: 1995-05-16
Abstract: A bin adapted for storing and dispensing particulate materials is formed by joining two or more bin modules (100, 102, 104) of similar shape. The linear di-mensions of the modules increase in a geometric series, with the smallest module(100) being at the bottom. The modules are designed to prevent arching of the par-ticulate material to assure mass flow. Three embodiments of bin modules are de-scribed. In the first and the third embodiments, each module consists of two sec-tions, but in a second embodiment the module consists of four sections. A bin constructed of these modules requires appreciably less head room than does a con-ical bin.
Patent CA-2061928-C (CA)
Title: Gain control circuitry for quadrature amplitude modulation demodulator
Inventor: YAMAMOTO TAKESHI
IPC: H04L27/38
Filed: 1992-02-26
Granted: 1997-03-18
Abstract: In a QAM (quadrature amplitude modulation) demodulator, gain-controlled amplifiers are provided respectively for the in-phase and quadrature channel baseband components of the signal, and a set of data and error signals is recovered from the output of each gain-controlled amplifier.  To determine the location of the signal point of each channel component, the QAM signal constellation is divided along the axis of the channel into two outermost regions A, an innermost region B and two intermediate regions C, and further divided along the axis of the channel into two outer regions E and an inner region D therebetween.  In response to each set of data and error signals, the location of the signal point of each baseband component is determined with respect to the regions A, B and C to produce a first logical output signal and with respect to the regions D and E to produce a second logical output signal.  Each of the gain-controlled amplifiers is controlled in response to the first logical output signal derived from one channel and the second logical output signal derived from the other channel.
Patent CA-2064571-C (CA)
Title: Automated cytological specimen classification system and method
Inventor: RUTENBERG MARK R
IPC: G06K9/00
Filed: 1991-03-28
Granted: 2002-08-06
Abstract: An automated screening system (10) and method of cytological specimen classification in which classifiers (300, 320) are utilized in performance of the classification function. Also included is an automated microscope (12) and associated image pro-cessing circuitry.
Patent CA-2072706-C (CA)
Inventor: SOLHEIM JOHN A
IPC: A63B53/04
Filed: 1992-06-29
Granted: 1994-12-13
Abstract: A wood type golf club includes a head (42) attached to one end of a shaft (56).  The head has a total head weight which is used in calculating a swingweight  for the  golf club.   A face portion (46b) on a body (44) in the club head (42) is  arranged for impacting a golf ball, and a sole plate (46) is attached to a  bottom  portion (44a) of the club head (42).   In  order  to resist twisting movements of the club head (42) when  impacting a golf ball at off-center points (43a, 43b) located on the body face portion (44b),  the sole plate (46) has a majority of  its weight concentrated around its perimeter (46a, 46b,  46c, 46d) by providing a cavity (60) in an interior surface of the   sole plate (46). The body (44) and the sole plate (46) each have  an individual  weight  which is less than the total  head  weight.          The sole plate (46) is selected from a plurality of sole plates formed of identical material but having different weights.  The weight of the selected sole plate (46) is the total head weight minus  the weight of the body (44) thereby eliminating the  use of additional weighted inserts (39, 41) in the body (44).
Patent CA-2077816-C (CA)
Title: Computer form feeding with a universal document feeder
Inventor: MEETZE MURRAY O
IPC: B41J11/48
Filed: 1992-09-09
Granted: 1997-03-18
Abstract: In a universal document feeder with which either conventional cut sheet documents or computer form (CF) web fan-folded documents may be fed to an imaging station, with an upper document loading tray with an associated feeder, but also having a separate side feeding entrance for feeding computer form web to the imaging station, there is provided a CF guide such as a bail pivotally mounted to the document feeder with a web guide surface positionable substantially above the upper document loading tray and adjacent the side of the document feeder having the side feeder entrance. This forms guide provides a path thereover for unfolding and upwardly feeding out CF which is fan-fold stacked in the upper document tray, and then downwardly in a path to the side entrance feeder, defining a web slack loop. The forms guide is spring mounted to pivot in response to variations in web forces, to ensure that the web is pulled gently and unfolds without tearing as, and after, it is pulled by the side entrance feeder, thus enabling the same (RDH) tray to be used for inputting CF as is already provided for normal documents, rather than a separate tray. A latch may be provided for latching the forms guide down in an inoperative storage position substantially flush with the top of the document feeder. The entire bail member is preferably outside of the area of this tray at all times, to provide unobstructed access thereto.
Patent CA-2077953-C (CA)
Title: Injection molded abrasive article and process
Inventor: WIAND RONALD CARLYSLE
IPC: B24D18/00
Filed: 1992-09-10
Granted: 2004-02-10
Abstract: An abrasive article produced by injection molding or the like, utilizing a thermoformable material with abrasive grit intermixed homogeneously therein.
Patent CA-2078089-C (CA)
Inventor: KOCINSKI RICHARD J
IPC: B05B17/06
Filed: 1992-09-11
Granted: 1996-02-06
Abstract: An improved aerosol chamber for an ultrasonic nebulizer which prevents relatively large medicament droplets from being inhaled by a patient.  The chamber has a housing formed from a polycarbonate resin and is generally cylindrically shaped with a spherical top surface.  The chamber includes an air inlet formed in the top surface and an aerosol outlet formed in a side surface. A centrally located mist tube extends coaxial from the air intake downwardly past the aerosol outlet.  A longitudinally extending slot is formed in the mist tube facing the side surface of the housing diametrically opposite the outlet.  The slot extends from a lower edge of the tube upwardly toward the air intake.  A geyser baffle is disposed at an angle within the mist tube above the slot to deflect larger droplets away from the slot.  The baffle includes an upper edge spaced from an adjacent inner surface of the mist tube to define a relatively small gap to allow inlet air to flow through the mist tube.  The air flow entrains nebulized medicament droplets, flows through the slot and through an annular space between the mist tube and the housing to the outlet.  The annular space creates a cyclone effect which causes larger droplets to condense on the interior walls of the housing.
Patent CA-2080240-C (CA)
Title: Integrated hydraulic mount for active vibration control system
Inventor: GOSSMAN WILLIAM E
IPC: F16F15/027
Filed: 1991-04-09
Granted: 1996-09-17
Abstract: An active-controlled vibrating mount (142) permits static forces from a machine (23) to support while decoupling the trans-mission of dynamic vibrational forces. The mount provides a reduction of force losses from a first generating area (152) to a sec-ond force applying area (130,132) to actively control vibrations of a vibrating element (23). These force losses are minimized due to minimization of the mass and velocity of fluid pumped by pumping the fluid through the short large cross-sectional area pas-sageways (144, 146). The device provides for proper channeling of the forces to the vibrating element (23) in a uniaxial direction (x) and constrains the application of forces in non-working directions.
Patent CA-2081972-C (CA)
Title: Electrolytic treatment of an acid solution
Inventor: BISHARA JERIES I
IPC: C25D21/16
Filed: 1992-11-02
Granted: 1999-01-19
Abstract: A method, and apparatus therefor, for the electrolytic treatment of an acidic solution which comprises:  (a) providing an electrolytic cell, the cell comprising:  (i) an anode chamber and an anode therein; (ii) a cathode chamber and a cathode therein; (iii) a diaphragm of a non-isotropic fibrous mat comprising 5-70 weight percent organic halocarbon polymer fiber in adherent combination with about 30-95 weight percent of finely divided inorganic particulate impacted into said fiber during fiber formation, the diaphragm having a weight per unit of surface area of about 3-12 kilograms per square meter; (b) introducing the acidic solution into the cell; (c) applying a DC voltage between the anode and the cathode causing the migration of ions through the diaphragm; and (d) recovering a product of the electrolytic treatment from the anode chamber, or the cathode chamber, or from both chambers. The method, and apparatus therefor, are particularly applicable to the recovery of hexavalent chromium from a dilute chromium electroplating rinse solution.
Patent CA-2092636-C (CA)
Title: Bulk metal chip resistor
Inventor: PERSON HERMAN R
IPC: H01C7/06
Filed: 1993-03-12
Granted: 1997-06-10
Abstract: A bulk metal chip resistor includes an elongated resistor element having terminals at its opposite ends.  The terminals are formed by coating the opposite ends of the resistor element with a conductive material.  Insulative material may be molded around the center portion of the resistor to provide structural support, and the ends of the resistor can be bent downwardly so as to cause the central portion to be raised when the resistor is mounted on a circuit board.  A modified form of the invention includes wrapping the resistance element around the ends of a rectangular substrate so that the substrate provides structural support.  Another modified form includes placing four terminals at the four corners of the resistor element.
Patent CA-2094535-C (CA)
Title: Improvements in or relating to radio communication systems
Inventor: HULBERT ANTHONY PETER
IPC: H04W28/00
Filed: 1993-04-21
Granted: 2001-02-13
Abstract: CDMA (Code Division Multiple Access) can be used in cellular mobile radio systems to provide good spectral efficiency through averaging the interference wherever the number of users per carrier is large (several tens). This is readily practicable for voice users whose data rate requirements are modest but requies large spreading factors for ISDN data service users. This invention proposes an approach in which a multiplicity of CDMA carriers each with relatively low bandwidth are used for the voice services and overlayed with wide bandwidth CDMA carriers whose 'bandwidth occupies the whole (or most) of the band occupied by all of the narrowband CDMA carriers in order to service the data users. This allows the same RF band to service a relatively small number of data service users with wideband (and therefore higher cost) terminals without affecting the cost of terminals for the majority of voice users.