baber/WOPTO huggingface dataset:
Patent CA-2193204-C (CA)
Title: Delignification of chemical pulp with peroxide in the presence of a transition metal
Inventor: PAREN AARTO
IPC: D21C9/16
Filed: 1995-06-19
Granted: 2005-08-23
Abstract: The invention relates to a process for the delignification of a chemical pulp, such as a sulfate or sulfite pulp, in which process the pulp is treated with a peroxide and/or a peracid in the presence of an activating Ti-, V- or Cr-group transition metal, such as molybdenum, vanadium or tungsten. The essential idea in the invention is that a compound containing at least one heteroatom, such as Si, P or B, which is capable of forming a heteropolyacid with the activating transition metal, is added to the pulp. The feeding of the activating transition metal and the heteroatom into the pulp may take place in one and the same alkaline solution, for example introduced into the solution or in the form of a compound of the silicomolybdenic acid type, formed in the solution. The peroxide and/or peracid treatment may constitute part of the bleaching sequence, which contains as potential other treatment steps, for example, a treatment with oxygen and a chelation for the removal of heavy metals such as iron, manganese and/or copper.
Patent CA-2193787-C (CA)
Inventor: RABY FREDERICK R SR
IPC: F21V7/10
Filed: 1996-12-23
Granted: 2007-09-04
Abstract: A lightweight reflector is fabricated from corrugated plastic sheet by bonding a mirrored film on a cover layer having a great number of closely spaced lengthwise depressions so that a corresponding series of striations form a reflector surface having a multitude of facets, the sheet to be formed into a concavely curved shape which shape may be held with a wire secured crosswise to the sheet at a point intermediate the ends.  In the preferred embodiment, single faced corrugated plastic sheeting is used which can readily be shaped in a curved shape.
Patent CA-2196486-C (CA)
Inventor: SOSZKA ADAM
IPC: E03B7/10
Filed: 1997-01-31
Granted: 1999-08-24
Abstract: An apparatus for purging a water supply line during winter weather conditions using pressurized air includes an air  tank  capable  of  holding  a sufficient  supply  of pressurized air to purge the supply line.   A valve is connected to an air port of the tank and has a valve member movable between open and closed positions to control the flow of air into and out of the air tank. There is an air bleeder mechanism having an air inlet connectible to the supply line and an air outlet. The mechanism permits air, but not water, to pass from the supply line to the air tank and also permits air to flow back through the mechanism into the supply line.  A manually operated valve is used to permit atmospheric air to flow through the air bleeder mechanism to the supply line.
Patent CA-2198974-C (CA)
Title: Wall panel assembly with electrical outlet
Inventor: SMEENGE PAUL ALLEN
IPC: H02G3/10
Filed: 1997-03-03
Granted: 2000-04-18
Abstract: A method and apparatus for installing electrical outlets in a wall panel assembly.  The wall panel includes an open frame structure and front and rear panel inserts removably attached to front and rear faces of the frame structure.  The rear panel insert is removed from the rear face of the frame structure,  a cutout is formed in the front panel insert at a desired location for the outlet, a bracket  is  secured  at  one  end  thereof  to  the  frame structure with another end thereof positioned proximate the cutout in the front panel insert, the outlet is positioned in the cutout in the front panel insert and secured to the other end of the bracket, and the rear panel is replaced against the rear face of the frame structure.
Patent CA-2205575-C (CA)
Title: Continuous extrusion of complex articles
Inventor: RIVIERE V ALFREDO
IPC: B21C23/21
Filed: 1995-11-20
Granted: 2006-06-06
Abstract: An apparatus (20) for continuously extruding shaped articles includes a frictional extrusion source for extruding a feed material (31), a chamber for holding (42, 43) frictionally extruded material received from the extrusion source, a plurality of die chambers (10, 10a), each of the die chambers (10, 10a) receiving extruded material from the holding chamber (42, 43), a conduit (44, 45) for directing extruded material from the holding chamber (42, 43) to each die chamber (10, 10a) for selectively filling each die chamber (10, 10a) with extruded feed material and a monitor (53) for filling of each die chamber (10, 10a) of said plurality of die chambers with extruded feed material. The conduit (44, 45) is responsive to the monitor (53) so that extruded material can be directed from a filled die chamber (10, 10a) to an empty die chamber (10, 10a) for subsequent filling, thereby permitting continuous extrusion.
Patent CA-2210346-C (CA)
Inventor: BROQUIN JEAN-EMMANUEL
IPC: G02B6/122
Filed: 1997-07-23
Granted: 2006-12-12
Abstract: The device integrates on the same glass substrate (1) a passive monomode guide (2b) achieved by ion exchange in the substrate and an active monomode guide with lateral confinement by the substrate formed by an active thin layer (4) deposited on the substrate and covering a zone (2a) in the form of a channel achieved by ion exchange in the substrate. The passive monomode guide (2b) constitutes the extension of the zone (2a) in the form of a channel of the active guide. The thin layer (4) comprises a transition zone enabling adiabatic passage of the light from the passive guide to the active guide and vice-versa. The transition zone can be formed by an edge (5) of the layer (4) cutting the axis (S) of the zone in the form of a channel obliquely or by a zone of variable thickness of the thin layer.
Patent CA-2212194-C (CA)
Inventor: FIELDING WILLIAM S
IPC: H04N7/16
Filed: 1997-08-01
Granted: 2001-02-27
Abstract: A method and apparatus are provided for use in a video transmission network having a number of sites, identified in a database associated with the network, from which v ideo information can be transmitted or to which video information can be sent for controlling acc ess of selected sites in the network to other sites in the network by associating selected sites w ith each other by grouping the sites into a site group in accordance with preselected criteria ; identifying the associated sites by identification information stored in the database for th e sites; associating a subscriber with a selected site group in accordance with preselected criteri a; and granting access to each subscriber to all sites within the selected site group with which it  is associated.
Patent CA-2212967-C (CA)
Inventor: JOHANSSON HANS
IPC: D21H17/68
Filed: 1995-12-01
Granted: 2002-08-27
Abstract: Aqueous anionic sizing dispersion which comprises an anionic dispersion of a  cellulose-reactive sizing agent and colloidal anionic aluminum-modified silica particles. The dispersion is useful in the producti on of cellulose-based products whereby the dispersions i s either added to the stock or applied as a surface size.
Patent CA-2213065-C (CA)
Title: Method of protecting aluminum skins of land vehicles from corrosion
Inventor: VAN ECK DARRELL
IPC: C23F15/00
Filed: 1997-08-14
Granted: 2000-10-10
Abstract: A method is disclosed of protecting a land or roadway vehicle body from surface corrosion which causes pitting, blistering, and other defects in paint at the joints in the skin, where the body surface is comprised of dissimilar metals in its skins and stringers and in the fasteners therefor.      Roadway vehicles such as ambulances and fire trucks often have aluminum skins fastened with stainless steel screws, bolts, or rivets to aluminum structural members to save weight, but corrosion thereof is a persistent problem. The new method comprises using an antioxidant, a heavy grease compound with metallic zinc dispersed therein as dust or powder, such as electrical joint compound, as a bedding compound applied to surfaces of the fasteners or to the insertion apertures therefor before assembly. In one commercial form, the compound comprises about 51-53% by weight zinc, about 36% by weight refined heavy paraffinic distillate, and about 11-13% by weight aluminum stearate. The assembled surfaces will resist corrosion better, and for years longer, than surfaces assembled by other methods.
Patent CA-2213359-C (CA)
Title: Agitator assembly for a seed metering mechanism
Inventor: STUFFLEBEAM F JOHN
IPC: A01C7/04
Filed: 1997-08-19
Granted: 2003-01-14
Abstract: A seed agitating assembly for a seed metering mechanism including a housing with a seed reservoir area wherein a mass of seeds are held and a rotatable seed disc internally carried by the housing.  The seed disc is provide with a circular array of holes or throughopenings for captively transferring seeds from the seed reservoir to a seed discharge area on the seed metering mechanism.  The seed discharge area is typically arranged in spaced relation from the seed reservoir.  A rotary drive shaft extends endwise through the housing for imparting rotational movements to the seed disc.  According to the present invention, a seed agitator assembly is provided for stirring or agitating the seeds in the seed reservoir.  The seed agitating assembly includes a generally circular or plate-like member that is operably coupled to the drive shaft. The seed agitating assembly further includes a plurality of flexible arms carried by and radially extending beyond the periphery of the plate-like member for agitating the seeds in the seed reservoir as the plate-like member is rotatably propelled by the drive shaft.
Patent CA-2213425-C (CA)
Title: Handling device for layered cellulose products, in particular cotton wool pads
Inventor: WOELFEL PETER
IPC: B65B35/04
Filed: 1996-03-05
Granted: 2000-08-01
Abstract: A handling device for conveying layered cellulose products (cotton wool pads 1) formed successively during production between a production station (stamping machine 2) and a packaging station is provided with an intermediate storage system (4) with at least one pair of separate holding chambers (5, 6) for the serial holding of the cellulose products (cotton wool pads 1) delivered successively from the production station (stamping machine 2) in a number corresponding to the packaging unit and for the transfer of the cellulose products (cotton wool pads 1) held in this way as a package (67) into a respective conveying cartridge (10). One holding chamber (5) of the pair, of which there is at least one, can be coupled to the outlet of the production station (stamping machine 2) and at the same time the other holding chamber (6) in a transfer station (11) to the respective conveying cartridge (10) alternately.
Patent CA-2213431-C (CA)
Title: Appat a poissons
Inventor: MORTON PETER
IPC: A01K97/01
Filed: 1996-03-12
Granted: 2006-05-16
Abstract: L'invention concerne un appât à poissons (1) dans lequel des morceaux de substance d'appât (2) sont suspendus et répartis uniformément dans un mélange homogénéisé de substance d'appât et d'agent de gélification (3), le tout étant enfermé dans un filet de support tubulaire (4). On obtient ledit appât à poissons en mélangeant une substance d'appât avec un agent de gélification pour former un mélange sensiblement homogène, en rajoutant encore de la substance d'appât dans le mélange homogène de sorte que celle-ci soit mise en suspension dans ce dernier, en extrudant le mélange en suspension dans un tube à mailles et en laissant ensuite l'agent de gélification durcir. Une fois durci, l'agent de gélification stabilise la structure suspendue de l'appât à poissons et permet la libération et la diffusion des agents attractifs de manière contrôlée. L'agent de gélification est, de préférence, un alginate.
Patent CA-2214963-C (CA)
Inventor: TEICH MICHAEL
IPC: B60G9/02
Filed: 1997-09-22
Granted: 2000-12-12
Abstract: An axle suspension suspends a rigid axle body from a frame of a vehicle. The suspension has a pivot bearing for pivotally supporting the axle body, a spring arrangement for resiliently coupling the axle body to the frame, a thrust arm extending in a longitudinal direction between the axle body and the frame, and a steering arm extending generally horizontally and transverse to the longitudinal axis of the vehicle. The steering arm has one end connected to the frame and a second end connected by the pivot bearing to the axle body. The axle body supports rotatable wheels. According to the present invention, the suspension includes a pivot stop between the axle body and the vehicle frame.  The pivot stop is coupled to the axle at a first joint which is spaced apart from a pivot axis of the axle, and coupled to the frame at a second joint. The line connecting the two joints extends generally parallel to the main axis of the axle body. During pivoting of the axle body about the pivot axis, and during spring deflection, in which the distance between the axle body and the vehicle chassis varies, the joints move with respect to each other. The pivot stop primarily limits the axial distance between the two joints and thereby limits the pivoting angle range of the axle body. Preferably, a line connecting the two joints extends generally horizontally and transverse to the fore-and-aft axis of the vehicle.
Patent CA-2218958-C (CA)
Title: Loading spout hoist mechanism
Inventor: STAFFORD BRIAN T
IPC: B65G11/08
Filed: 1997-10-17
Granted: 2002-09-24
Abstract: A loading spout hoist mechanism comprises a multiple monospiral winch drum.  The drum is located under the top of the loading spout, and the loading spout passes through it.  The multiple monospiral winch drum is supported on two rings, the first of which is located inside the second.  The first ring is fixed to the loading spout support frame, and the second ring is journalled onto to first one.  The second ring also carries a ring gear, which may comprise gear teeth machined into the ring, or a separate ring gear attached to the second ring.  The loading spout support frame carries a pinion drive mechanism which engages the ring gear, and can rotate the second ring in either direction, to raise and to lower the loading spout by winding in or out the loading spout support cables carried in each monospiral of the winch drum.  In a modification, the loading spout is attached to the support frame by motorised pin mechanisms.  The loading spout hoist is compact, permits precise movement of the bottom end of the loading spout, and does not interfere with the feed belts used to deliver solids to the loading spout.
Patent CA-2234326-C (CA)
Inventor: KANEHIRA KOICHI
IPC: C07C29/00
Filed: 1998-04-08
Granted: 2001-07-31
Abstract: Provided according to the present invention is a process for the preparation of a polyprenol represented by the following formula (1):          (see fig. I) wherein Y and Z individually represent a hydrogen atom or are coupled together to form a carbon-carbon bond; R represents a hydrogen atom or a protective group of a hydroxyl group; and n stands for 0 or an integer not smaller than 1, which comprises bringing an organic complex of an alkaline metal into contact with a compound represented by the following formula (2):         (see fig. II) wherein concerning V, W and X, V represents a halogen atom, while W and X are coupled together to form a carbon-carbon bond or X represents a halogen atom, while V and W are coupled together to form a carbon-carbon bond; A represents a protective group of a hydroxyl group; and Y,Z and n have the same meanings as defined above.
Patent CA-2235691-C (CA)
Inventor: GILLESPIE THOMAS E
IPC: C10G29/16
Filed: 1998-04-23
Granted: 2003-07-08
Abstract: A method for upgrading an oil stream containing naphthenic acid and sulfur contaminants which comprises, adding an alkaline earth oxide to the oil stream to form a mixture wherein said alkaline earth oxide is added at an effective amount to convert substantially all naphthenic acid contaminants to corresponding non-acidic compounds and substantially all sulfur contaminants to alkaline earth metal sulfide, heating the mixture under a pressure sufficient to prevent vaporization of the mixture to a temperature sufficient and for a time sufficient to react the naphthenic acid contaminants with the alkaline earth oxide to form the corresponding non-acidic compounds and alkaline earth carbonate and the sulfur contaminants with the alkaline earth oxide to form the alkaline earth sulfide, and separating the alkaline earth carbonate and alkaline earth sulfide.
Patent CA-2237748-C (CA)
Inventor: MEIMARI MAGDY
IPC: B01D53/22
Filed: 1998-05-14
Granted: 2002-11-12
Abstract: A process for recovering SF6 from a gas is provided.          The process includes the step of contacting a gas stream comprising SF6 and at least one of N2, O2, CO2, and H2O with a membrane in at least one membrane separation unit at conditions effective to obtain a retentate stream rich in SF6 and a permeate stream rich in at least one of N2, O2, CO2, ancL H2O. A process for forming solidified Mg metal is also provided.  The process includes recovering and/or recycling of SF6 and/or CO2.
Patent CA-2243213-C (CA)
Title: Boitier a effet de blindage electrique
Inventor: TIBURTIUS BERND
IPC: H05K9/00
Filed: 1997-01-20
Granted: 2002-11-19
Abstract: L'invention concerne un boîtier (1) à effet de blindage électrique destiné à recevoir et à blinder de manière électromagnétique des composants ou des blocs de composants (C) émettant des rayonnements électromagnétiques ou sensibles aux rayonnements électromagnétiques. Ce boîtier comporte au moins deux parties (2, 3) présentant des parois à effet de blindage électrique. Il est prévu un élément d'étanchéité (4) monté fixe sur au moins une partie (2) du boîtier, dans la zone d'un joint avec l'autre partie (3) du boîtier. L'élément d'étanchéité (4) et au moins une section de la partie (2) de boîtier qui le porte, sont réalisés dans un matériau sensiblement non conducteur et sont recouverts, en vue du blindage électromagnétique, d'une couche électroconductrice cohérente (6.1) qui s'étend au moins sur toute la largeur du joint et qui adhère à l'élément d'étanchéité (4) et à la partie du boîtier.
Patent CA-2248020-C (CA)
Inventor: VICARI MAXIMILIAN
IPC: C10G45/36
Filed: 1997-02-27
Granted: 2005-09-27
Abstract: In the process for the selective hydrogenation of dienes in supply flows containing them, such a flow is hydrogenated on a nickel- containing precipitating catalyst at a temperature of between 40 and 100 .degree.C, a pressure of between 3 and 20 bar and a WHSV (weight hourly space velocity) of between 1 and 10 kg/(lxh) in the presence of free hydrogen.
Patent CA-2251887-C (CA)
Title: Radio frequency noise canceller
Inventor: CIOFFI JOHN M
IPC: H04M3/00
Filed: 1997-04-17
Granted: 2005-10-11
Abstract: A receiver or receiver system for high speed data communications having a radio frequency noise canceller (112) is disclosed. The radio frequency noise canceller (112) removes radio-frequency noise from received signals over a transmission medium by adaptively estimating the radio-frequency noise during data transmission. In one embodiment, the radio frequency noise canceller includes: an adaptive filter (208) for producing a noise cancellation signal by filtering a reference noise signal based on filter parameters, a subtractor (202) for subtracting the noise cancellation signal from the first signal to produce the second signal; and an update circuit (204) for enabling, at predetermined times, modification of the parameters of the adaptive filter based on the then existing second signal. A method for removing radio frequency noise is also disclosed.
Patent CA-2254479-C (CA)
Inventor: SUMNER CAROL ANNE
IPC: A61G7/10
Filed: 1998-11-19
Granted: 2005-07-12
Abstract: A transfer aid assists a disabled person in moving from a first seating structure such as a bed to a second seating structure such as a wheelchair.  The transfer aid includes a main arm having a straight portion for alignment with an edge of the bed and a curved portion extending towards the wheelchair for supporting the person's upper torso. The main arm is generally horizontal. A supporting arm extends from the main arm away from the bed to a pedestal whereon the supporting arm is mounted. The supporting arm is adjustable in length for varying the offset of the main arm in relation to the pedestal. The main arm is covered with a layer of foam and a suede cover for cushioning against the person's upper torso. The transfer aid is used in combination with a transfer board extending from the edge of the bed to a front end of the wheelchair for supporting the lower torso of the person.
Patent CA-2258691-C (CA)
Title: Resin and wood fiber composite profile extrusion method
Inventor: PUPPIN GIUSEPPE
IPC: B29C48/32
Filed: 1997-06-11
Granted: 2006-07-04
Abstract: The invention relates to a method for forming a composition comprising a res in and wood fiber in the form of a composite that can be used to form a linear extrudate in the form of a structural member. The linear extrudate can have a profile cross section of any useful engineering shape. The profile is made using extruder processing. A unique extruder configuration is used that optimizes the composite strength by promoting the random orientation of fibers resulting in an isotropic flex modulus, tensile strength, impact resistance and other structural properties. Further, the extruder can include features that can cool the profile interior after leaving an exit die increasing the productivity and quality of the extruder manufacturing process. The method o f the invention can be used with any thermoplastic resin useful in extrusion devices and preferably uses a wood fiber.
Patent CA-2267859-C (CA)
Title: Interdental cleaner and manufacturing process
Inventor: WEIHRAUCH GEORG
IPC: C02F1/72
Filed: 1997-09-18
Granted: 2009-03-10
Abstract: For good dental care, an interdental cleaner is disclosed which consists of a stretch stick-shaped support made of a first plastic material, the surface of which is partly covered with at least one insert or a plating made of a second plastic material softer than the first one. The insert can be placed in a recess built in the support and maintained through form-closure inside same. If the first plastic material of the support and/or the second plastic material of the insert or plating contains one or more additives, the cleaning or hygiene efficiency can vary and be optimized. During the process of manufacturing said interdental cleaner, the second plastic material of the insert or plating can be injected on the first plastic material of the support. The support and the insert or plating can be made according to a two-component injection moulding process.
Patent CA-2267971-C (CA)
Title: Drive head assembly
Inventor: DEDELS RICK
IPC: F04C15/00
Filed: 1999-04-06
Granted: 2006-08-01
Abstract: The present invention provides a pump drive assembly for a deep well, submersible, progressing cavity pump that includes an internal hydraulic pump for slowing the counter rotation of the polished rod induced by recoil in the sucker rod. The pump drive assembly includes a housing enclosing a hydraulic fluid reservoir and a gear chamber separate from the reservoir. A drive shaft extends into the housing and includes a drive gear integral with or keyed to the drive shaft. A main shaft also extends into the housing and includes a main gear integral with or keyed to the main shaft. The main gear is engaged with the drive gear within the gear chamber, where the gear chamber includes an inlet and an outlet channel providing fluid communication between the gear chamber and the reservoir, so that the gears form a reversible gear pump within the housing. The reversible gear pump operates to pump hydraulic fluid from the reservoir into the gear chamber and back into the reservoir. During normal operation of the drive assembly, the gear pump will operate in the forward direction; but when the polished rod is caused to recoil, the gear pump will be caused to operate in the reverse direction. Therefore, the pump drive assembly also includes a flow resistor coupled to at least one of the inlet and outlet channels for retarding the flow of the hydraulic fluid when the gear pump is operating in the reverse direction, thus slowing counter-rotation of the polished rod during recoil.