baber/WOPTO huggingface dataset:
Patent CA-2055756-C (CA)
Inventor: TSANG CHIH-HAO MARK
IPC: F02B3/06
Filed: 1991-11-18
Granted: 1996-05-07
Abstract: In a preferred method, particles of amorphous silica are used to provide a silica coating suitable for carrying dispersed catalyst particles for the treatment of diesel engine exhaust emissions.  The silica coating is formed from a mixture consisting essentially of two groups of the fine silica particles of respective average sizes and size ranges which are virtually non-overlapping.  The particles of the first of the two groups have a first average size sufficient to permit the particles of the first group (smaller group) to occupy voids between the particles of the second group (larger group) in a packed arrangement, and preferably the second group has a second average size which is at least 20 times greater than the first average size.          Although particles of amorphous silica are preferred for use in forming a coating with improved adherence suitable for the treatment of diesel exhaust, the method of the invention is also useful to improve the adherence of coatings formed of other ceramics, such as alumina, titania, zirconia and zeolite.
Patent CA-2062577-C (CA)
Title: Apparatus and process for drying cellulosic and textile substances with superheated steam
Inventor: CURRY DONALD P
IPC: F26B21/00
Filed: 1992-03-10
Granted: 2002-04-23
Abstract: Apparatus and process for the removal of moisture from cellulosic products such as pulp, paper and molded articles, and textile products, wherein gaseous water (steam) in a superheated state is utilized in an energy efficient manner as the drying medium. The apparatus is an enclosed system that operates continuously to dry the products while preventing air contamination from entering the apparatus and thereby reducing its drying efficiency. The apparatus comprises a plurality of drying sections wherein the number of drying sections connected in series is a function of the type and volume of the product or products to be dried. Within each drying section there exists indirect steam heating means, steam-recirculation means, an individual steam-supply chamber, and sections of a steam-return chamber which is open and common to all drying sections in the series. Air/vapor lock chambers at both ends of the apparatus prevent air incursion into the drying sections and at the same time permit a slight amount of excess steam from within the drying sections to vent out of the apparatus. Steam-condensing means located substantially entirely within the drying sections of the apparatus is utilized to recover a large percentage of the energy of the heat of vaporization. The process described herein involves conveying the products into the apparatus and directing the drying steam from the steam-supply chamber onto the products and drawing the spent steam away from the products. The spent steam, which comprises the drying steam in combination with the steam formed by the liberation of moisture from the products, is partially recirculated past the indirect heating means and back into the steam-supply chamber, and partially condensed by the internal steam-condensing means. The velocity at which the drying steam is directed onto the products can be varied in accordance with the type of product to be dried.
Patent CA-2065199-C (CA)
Title: Polyphase divider/combiner
Inventor: DITTMER TIMOTHY W
IPC: H03F3/60
Filed: 1992-04-06
Granted: 1996-01-23
Abstract: A polyphase divider/combiner is provided and which includes a common input/output port and a plurality of N output/input ports, wherein N is an even integer greater than two.  N electrical signal transmission paths are provided with each extending from the common input/output port to a respective one of the N output/input ports.  The N electrical signal transmission paths are of N different electrical lengths such that the output/input ports are out of phase relative to each other by 180/N degrees.
Patent CA-2070200-C (CA)
Title: Nickel processing
Inventor: MOTTERAM GEOFFREY MAYFIELD
IPC: C22B3/08
Filed: 1992-06-02
Granted: 2001-04-10
Abstract: A method of processing intermediate nickel bearing products, the method comprising subjecting the intermediate nickel bearing products to an acid leach in order to dissolve substantially all of the acid soluble magnesium bearing minerals contained therein to provide an upgraded nickel bearing residue and a leach solution. The method is particularly suitable where the intermediate nickel bearing products are nickel sulphide concentrates or nickel iron oxide calcine.
Patent CA-2071338-C (CA)
Inventor: HAMEN ILKKA OLAVI
IPC: B03C1/14
Filed: 1992-06-16
Granted: 1998-02-24
Abstract: The invention relates to a method which pertains to the separation of pulp which contains magnetic constituents in a wet-magnetic, low-intensity separator of the concurrent type, in which a cylindrical, horizontally mounted rotatable drum coacts with non-rotating magnets disposed in the drum in a manner to convey magnetic constituents in contact with the drum surface to an outlet for magnetic concentrate, and in which method pulp which is depleted of magnetic constituents is separated as waste at a region remote from the concentrate outlet in a direction opposite to the direction in which the drum rotates.  The invention is characterized by the combination of delivering the pulp to the separator so as to bring the pulp into contact with the drum at or close to the highest level of the drum; delivering water to the separator in the vicinity of the concentrate outlet such that water will flow in contact with the pulp constituents that accompany drum rotation; and removing the water from the drum together with the waste.            The invention also relates to a wet-magnetic separator for carrying out the method, which is characterized by means for delivering pulp to or close to the highest level of the drum, water intake means arranged essentially along the whole length of the drum in the vicinity of the magnetic concentrate outlet.
Patent CA-2071624-C (CA)
Inventor: NAITO TAKAO
IPC: H03D3/22
Filed: 1992-06-18
Granted: 1998-09-29
Abstract: In a frequency discriminator in which it is adapted such that a signal to be subjected to frequency discrimination is divided into two signals and mixed together after one of the divided signals has been given a delay time, the frequency discriminator disclosed is additionally provided with a filter, of which cutoff frequency is set up according to the delay time, disposed in the front stage and, thereby, both improvement of accuracy in frequency identification and expansion of the capture range can be attained.
Patent CA-2072669-C (CA)
Title: Acoustic emission leak simulator
Inventor: ROBERTSON MICHAEL OWEN
IPC: G01M3/24
Filed: 1992-06-29
Granted: 1998-12-08
Abstract: An acoustic emission leak simulator (10) for a nondestructive simulation of a leak in a structure employs a fluid supply with variable means (18) for controllably releasing the fluid to create a simulated leak source (20).  An acoustic waveguide (22) acoustically coupled to the variable means (18) couples the sound waves into the structure (12) for simulation of a leak signal.  Detecting means (30) positioned at a predetermined distance from the simulated leak source (20) characterize the leak signals for a leak detection system.
Patent CA-2072905-C (CA)
Title: Process for producing oxygen enriched product stream
Inventor: HIROOKA EIJI
IPC: B01D53/02
Filed: 1992-07-02
Granted: 1999-08-31
Abstract: A two bed pressure swing adsorption process is disclosed having high yield and high production rate. the process utilizes fine or normal sire seolite sieve material and reaatively short cycle times. A power saving can be obtained by sequencing the various steps of the process to provide substantially continuous use of a vacuum pump.
Patent CA-2088036-C (CA)
Title: Refrigerated dough product with topping and method of manufacture
Inventor: RAY MADONNA M
IPC: A21C9/04
Filed: 1993-01-25
Granted: 2004-03-30
Abstract: A method for applying and embedding dry toppings to both rolled and biscuit-like dough products and the resulting dough piece of the method. The method comprises applying dry toppings on the surface of the dough product in a sheeting line. Then, the roll pairs in the sheeting line embed the dry toppings into the surface of the dough product.
Patent CA-2090195-C (CA)
Title: Self propelled submersible suction cleaner
Inventor: SEBOR PAVEL
IPC: E04H4/16
Filed: 1993-02-23
Granted: 2004-09-14
Abstract: A self-propelled submersible suction cleaner as used to clean the surfaces of a swimming pool transfers a vibratory movement of an oscillator located within the flow path of a suction chamber for propulsion over the submerged surface of the pool. This vibratory movement of the oscillator is also converted to a unidirectional rotational motion used in conjunction with a gear train to cause the cleaner to rotate through at least a 90 angle allowing the cleaner to improve on the random path taken by the cleaner and to maneuver away from obstacles such as pool steps potentially stopping the cleaner movement. The cleaner includes a elevation limiter that keeps the suction chamber submerged as the cleaner climbs a vertical wall and attempts to rise above the water level in the pool. A pressure relief valve eliminates the concern over debris blocking the suction and causing potential damage to the pool pump and motor. Additional features including a shoe dimensioned to improve the forward movement resulting from the vibratory motion, shoe skirts in combination with a shoe flap to control suction, and bellows configurations to aid in better execution of sharp turns up a vertical wall as well as a smoother movement of the cleaner are disclosed.
Patent CA-2102732-C (CA)
Inventor: FRICKER ROBERT
IPC: A47J31/44
Filed: 1993-11-09
Granted: 2007-01-30
Abstract: A device (10) to prepare foamy milk for cappuccino-coffee or the like beverages is preferably provided with a resistance passage member (20) in it, at their inlet heated milk or the like and air or the like are fed under pressure by means of a pump (55) and at the outlet the produced foam is led from an opening (22) into a chamber (23) with an outlet opening (25), whereby in the chamber (23) the foam is seperated from the still liquid part. The resistance passage member (20), which is preferable consisting of plastic, comprises a cylinder (26) and in it a rod formed element (27) is fixedly arranged, which is shaped at the circumference by means of a labyrinth passage (27'), which is known for preparing cream. This device (10) enables the preparing of foamy milk for cappuccino-coffee or the like beverages in a easiest and very reliable manner.
Patent CA-2104480-C (CA)
Title: Security identification badge
Inventor: HAAS DAVID J
IPC: B42D15/10
Filed: 1992-02-04
Granted: 1999-01-26
Abstract: A self-expiring Security Identification Badge is provided. The badge includes a base substrate (11) having a void indicia area (14). Also included is an ink substrate (30) having an expired indicia area (34) of a soluble ink and an adhesive surface (32). Also included is an overlay substrate (40) having an ink dissolver (42) and a di splay surface (44). When the I.D. Badge is issued, the inked substrate (30) is attached to the base substrate (11), with the inked substrate (30) covering the void indicia area (14). The overlay substrate (40) is then placed over and attached to the inked substrate ( 30), with the ink dissolver (42) in contact with the soluble ink (34) of the inked substrate (30). The ink dissolver (42) of the over lay substrate (40) contacts and coats with the soluble ink (34) of the inked substrate (30) to dissolve the ink and allow the ink to mi grate through the overlay substrate (40) to the display surface (44), where it can be visually perceived, in a preselected time interval.
Patent CA-2108113-C (CA)
Inventor: JENSEN SUSAN E
IPC: C12N1/21
Filed: 1993-10-08
Granted: 2006-12-05
Abstract: DNA sequences are provided which encode the enzymes required for clavulanic acid synthesis. A process is provided for producing clavulanic acid in a transformant of a non-clavulanate-producing host.
Patent CA-2110015-C (CA)
Title: Wall water hydrant having backflow and back siphonage preventor
Inventor: ALMASY LAWRENCE
IPC: E03B9/02
Filed: 1993-11-25
Granted: 1998-11-10
Abstract: A wall mounted water hydrant (10) has an elongated hollow housing (12) with water inlet and outlet ends, and a center axis; an inlet valve in the housing adjacent to the inlet end, including a valve seat (39) and a valve body (42); a water outlet port (24) in the housing (12) adjacent to its outlet end; a valve operating rod (30) in the housing (12) with its inner end secured to the valve body (42) and extending along the center axis to the outlet end of said housing (12), terminating in an outer end; a handle (28) attached to the rod outer end, which when rotated in one direction closes the valve body (42) against the valve seat (39), and in the other opposite direction moves the valve body (42) away from the seat (39), thus allowing pressurized water from the inlet to flow downstream through the housing (12) and outlet port (24); and a backflow preventor (44) secured to the valve downstream from its seat (39).  The elastomeric backflow preventor (44) has a bell shape comprising a cylindrical body (46) smaller than the interior of the housing and thin flexible side walls (48 and 51) extending from the body outwardly and downstream to end in a lip portion (52) which normally engages the interior walls of the housing (12).  The construction of the preventor (44) permits it to deflect toward the axis of the housing (12) when water is flowing in a downstream direction and to engage the interior surface of the housing if backpressure urges water to flow in an upstream direction, thus sealing the valve means against backflow.
Patent CA-2110634-C (CA)
Title: Antenne active a synthese de polarisation variable
Inventor: CAILLE GERARD
IPC: H01Q21/24
Filed: 1993-12-03
Granted: 2000-02-15
Abstract: L'invention concerne un circuit hyperfréquence d'émission/réception (E/R) pour antenne réseau avec synthèse de polarisation, notamment pour antenne radar. Selon l'invention, la polarisation voulue est obtenue en appliquant deux signaux à un élement rayonnant de l'antenne, sur deux voies d'accès orthogonales, ayant un déphasage commandable entre les deux voies, et les deux voies fonctionnant simultanément. Dans une réalisation préférée, les deux voies d'émission sont équipées de deux amplificateurs de puissance qui amplifient chacun un signal provenant d'un diviseur de puissance en phase ou d'un coupleur hybride, avec un déphasage commandable d'un ou deux bits, qui ajoute un déphasage de 0, 90, ou 180.degree., permettant la synthèse de polarisations orthogonales linéaires ou circulaires. Selon une réalisation préferentielle, le circuit selon l'invention est réalisé en partie ou en totalité en technologie monolithique (MMIC). L'invention porte également sur une antenne comportant un circuit E/R ayant les caractéristiques ci-dessus. Figure à publier : 3
Patent CA-2112472-C (CA)
Title: Methode et dispositif servant a extraire des matieres de l'interieur d'un vaisseau ou canal de l'organisme
Inventor: PHAN CU NGOC
IPC: A61F2/01
Filed: 1992-07-24
Granted: 2000-10-24
Abstract: Cathéter de retrait (10) servant à retirer des matériaux délétères (S) de canaux corporels et comprenant un corps de cathéter allongé (12) pourvu d'un filet mou (26) situé à son extrémité distale (16). On peut plier ledit filet mou, afin de faciliter son introduction dans le canal corporel et l'ouvrir in situ, afin de permettre la prise et le retrait des matériaux délétères. L'invention décrit un procédé servant à retirer des calculs urétéraux de l'uretère.
Patent CA-2114378-C (CA)
Title: Disc recording and/or reproducing apparatus
Inventor: FUKUYAMA YUTAKA
IPC: G11B33/02
Filed: 1994-01-27
Granted: 2002-12-10
Abstract: A recording and/or reproducing apparatus for a magneto-optical recording medium housed within a disc cartridge includes a casing, a recording and/or reproducing unit, a transporting unit and a driving unit. The casing includes an opening for introducing and ejecting the disc cartridge. The recording and/or reproducing unit includes a magnetic head for applying a perpendicular magnetic field on the magneto-optical recording medium and is housed within the casing. The transporting unit loads the disc cartridge inserted via the opening on the recording and/or reproducing unit. The transporting unit includes a holding section for holding the inserted disc cartridge and, a pair of cam members for moving the holding section in the horizontal direction in the casing and in the vertical direction in the casing in continuation to the movement in the horizontal direction. The driving unit causes the cam members to be moved in the horizontal direction in the casing.      The cam members are moved in a first direction as a result of insertion of the disc cartridge and set the driving unit into operating states as a result of insertion of the disc cartridge.      The cam members cause the holding section to be moved in the horizontal direction by a movement of the cam members in a second horizontal direction consecutive to the movement in the first horizontal direction by the driving unit. The cam members cause the holding section to be loaded on the recording and/or reproducing unit by a movement of the cam members in a third horizontal direction consecutive to the movement in the second horizontal direction by the driving unit.
Patent CA-2116321-C (CA)
Title: Seat suspension for watercraft
Inventor: HARVEY JOHN ALBERT
IPC: B63B35/73
Filed: 1994-02-24
Granted: 1999-09-07
Abstract: In a personal recreational watercraft, an improvement resides in a suspension mechanism, which permits greater maneuverability and stability, and reduces driver fatigue. To overcome the strong forces, a suspension system is employed which permits up and down vertical movement, while resisting lateral movement and torsional forces. The suspension apparatus also reduces shock effects caused by choppy or rough water.
Patent CA-2118988-C (CA)
Inventor: CALEIX CLOVIS
IPC: E21B43/29
Filed: 1994-03-14
Granted: 1995-07-18
Abstract: There is described a method of excavating an underground area liable to flooding or collapsing during excavation, wherein the area is susceptible to disaggregation by high pressure water jet and is located above rock of strength suitable for drifting a gallery. The method comprises drifting a gallery in the rock beneath the area, freezing at least a perimeter of the area to form a frozen perimeter, and excavating material from within the frozen perimeter using a high pressure water jet and access means, eg. borehole(s) between the gallery and the area. Preferably the whole area is frozen for excavation.
Patent CA-2128371-C (CA)
Inventor: MCKENNA GREGORY B
IPC: E06B3/273
Filed: 1994-07-19
Granted: 2005-06-14
Abstract: An insulating composite frame member is disclosed which comprises an elongated gutter member and an elongated face member disposed in parallel, spaced apart relation. First and second facing flanges project toward one another from the gutter member and the face member respectively. A thermal isolator comprised of a thermally insulating material has first and second jaw-like clamps formed on opposite sides thereof which engage the first and second facing flanges respectively to secure the gutter member and the face member to the isolator. The frame member further includes means formed on the gutter member and the face member for crimping against the clamps of the isolator to lock the isolator to the gutter member and the face member. In the disclosed embodiment the isolator is adhesively bonded to the gutter member and to the frame member in addition to the mechanical coupling provided by the jaw-like clamps of the isolator. Also in the disclosed embodiment mutually engaging surfaces of each of the jaw-like clamps and their respective flanges are knurled to provide enhanced resistance to longitudinal shear forces.
Patent CA-2135049-C (CA)
Inventor: CUSHNER STEPHEN
IPC: B41C1/05
Filed: 1993-05-10
Granted: 1998-08-11
Abstract: Procédé de fabrication consistant à renforcer et à graver au laser un cliché d'impression flexographique monocouche.
Patent CA-2135102-C (CA)
Title: Integrated catalytic cracking and olefin producing process using plug flow regeneration
Inventor: KERBY MICHAEL CHARLES
IPC: C10G11/18
Filed: 1994-11-04
Granted: 2004-05-25
Abstract: Disclosed is a method which combines catalytic cracking and olefin production using a coked catalytic cracking catalyst as a dehydrogenation catalyst to dehydrogenate an alkane feed stream and form an olefin rich product stream.  The method uses a plug flow regeneration system to form the dehydrogenation catalyst and to fully reactivate deactivated cracking catalyst for reuse in the cracking reaction.  The catalyst preferably comprises a crystalline tetrahedral framework oxide component.
Patent CA-2135112-C (CA)
Inventor: GUILMETTE VICTOR RICHARD
IPC: A47J45/02
Filed: 1994-11-04
Granted: 2004-10-26
Abstract: A kitchen appliance has a working unit with a motor and a mounting bracket for pivotably mounting the working unit under a kitchen cabinet. The working unit has a housing with a working area at a first face and a decorative second face. In a first position of the working unit, the working area is exposed at a first location. In a second position of the working unit, the working area is concealed by the mounting bracket and the decorative second face is exposed at the first location. Deflectable cantilevered detents are provided to stationarily hold the working unit at the first and second positions until moved by a user.
Patent CA-2146048-C (CA)
Title: Adaptive video coder with dynamic bit allocation
Inventor: HARTUNG JOHN
IPC: H04N7/30
Filed: 1995-03-31
Granted: 1999-03-23
Abstract: A method of coding a video signal at a fixed bit rate with use of a vector quantization codebook, wherein advantageous codebook updates are determined by comparing a coding error associated with a first provisional coding of a frame with a coding error associated with a second provisional coding of the frame. The firstprovisional coding uses a fixed available number of bits to code a frame with use of the unmodified codebook, whereas the second provisional coding uses a modified codebook to code the same frame. However, the second provisional coding codes both the frame and the codebook updates with the fixed available number of bits.The provisional coding having the smaller coding error is selected as the coding of the frame which will be adopted. In addition, the codebook may be replaced with the modified codebook when the second provisional coding is selected. In this manner, the coder will adapt the codebook to the characteristics of the scene.