baber/WOPTO huggingface dataset:
Patent CA-2236238-A1 (CA)
Title: Methods and devices for controlling the vibration of ultrasonic transmission components
Inventor: KELLOGG SCOTT
IPC: A61B17/32
Filed: 1998-04-27
Abstract: A transducer assembly in accordance with the present invention includes at least one transducer element having a first end and a second end. A first electrode is coupled to the first end and a segmented electrode is coupled to the second end. The segmented electrode is adapted to allow the transducer element to be simultaneously driven by a plurality of electric signals. A generator in accordance with the present invention includes a frequency control loop to generate an electrical signal having a desired level of vibration. A first amplifier having a selected gain receives the electrical signal from the frequency control loop. The first amplifier generates a first output signal to drive the transducer element. A second amplifier having a selected gain receives the electrical signal from the frequency control loop. The second amplifier generates a second output signal to drive the transducer element.
Patent CA-2237180-A1 (CA)
Title: Compositions and methods for promoting blood component survival
Inventor: SADRZADEH S M HOSSEIN
IPC: A01N1/02
Filed: 1996-11-08
Abstract: Compositions and methods for promoting blood component survival are described.  Typically, the compositions include a population of blood components, e.g., RBCs, and an antioxidant, e.g., a lazaroid. The methods of the invention include the steps of contacting, in vitro, a population of oxidatively stressed blood components with an antioxidant in an amount and over a period of time effective to protect against oxidative stress-induced blood component damage or in an amount and over a period of time effective to increase the viability of the blood components, e.g., for a period of time greater than 28 days. Methods for inhibiting oxidative stress-induced leukocyte-mediated damage to a population of blood components are also described. These methods include contacting a population of blood components which includes leukocytes and at least one additional type of blood component with an antioxidant in an amount and over a period of time effective to protect against oxidative stress-induced leukocyte-mediated blood component damage.
Patent CA-2243095-A1 (CA)
Title: Ice skate blade assembly
Inventor: ROWLAND TERRY L
IPC: A63C1/30
Filed: 1998-07-10
Abstract: The skate holder of the present invention is of a design which is suitable for molding and allows a longer runner to be secured for a given size boot.  The skate holder uses a combination of large upwardly opening cavities and smaller downwardly opening cavities to increase the size of the runner that can be received for a given size skate boot.  In addition, the holder allows two different types of runner securement to be used.  One securement arrangement uses vertical ports and the second securement arrangement uses horizontal ports.
Patent CA-2243374-A1 (CA)
Title: Tramp material removal from pulp feed systems
Inventor: WALLEY CRAIG A
IPC: D21C7/00
Filed: 1998-07-17
Abstract: Dense, tramp material, is efficiently separated in a comminuted cellulosic fibrous material feed system, for example in a chemical cellulose digester feed system, in a simple but effective matter. By merely utilizing a generally vertical conduit and a slurry flow within it (which may be augmented by high speed liquid introduction), that is caused to turn in a radiused path, centrifugal force allows separation of the tramp material into a cavity beneath the radius transition without requiring any mechanical element to engage the slurry. Appropriate purges, baffles, and discharge mechanism may be provided. Alternatively, a tramp material separator may be built into an otherwise conventional metering screw in a digester feed system, or one or more centrifugal separators can be provided downstream of the slurry pump in a chip slurry transport system or digester feed system.
Patent CA-2243634-A1 (CA)
Title: Method for reducing sulfur-oxide emissions from an asphalt air-blowing process
Inventor: MIRROW JAY H
IPC: C10C3/02
Filed: 1997-02-10
Abstract: A method for substantially reducing sulfur-oxide emissions from an asphalt airblowing process (51) involves adding an emission reducing additive (53) to the asphalt prior to air blowing, or early in the air-blowing process. The emission-reducing additive includes at least one of metal hydroxide, metal oxide, metal carbonate, or metal bicarbonate, where the metal is sodium, potassium, calcium, magnesium, zinc, copper, or aluminum. The asphalt is subjected to an air-blowing process that produces flue gases, including sulfur containing compounds. The flue gases are passed through a filter (50), preferably of the fiber-bed type, to remove at least a portion of the sulfurcontaining compounds via condensation. After passing through the filter, the flue gases are subjected to an incineration process (55) before being passed into the atmosphere. The combination of filter and emission-reducing additive can advantageously reduce sulfur-oxide emissions from the asphalt air-blowing process by at least 50 % over the same process without the filter and additive.
Patent CA-2244430-A1 (CA)
Inventor: ROBINSON DAVID L
IPC: B60N2/235
Filed: 1998-08-04
Abstract: A seat recliner for adjusting the angular position of a seatback relative to a seat bottom. The seat recliner includes a first member secured to the seat bottom, a second member secured to the seatback and supported for pivotal movement relative to the first member, and a latching mechanism operable in a latched mode for inhibiting pivotal movement of the second member relative to the first member and in an unlatched mode for permitting pivotal movement of the second member. The latching mechanism includes a first gear non-rotatably fixed to the second member, a second gear rotatably supported from the first member and in constant meshed engagement with the first gear, and a third gear in constant meshed engagement with the first gear. A recline actuator mechanism shifts the latching mechanism from the latched mode into the unlatched mode by moving the third gear from a first position whereat it is also meshed with the second gear to a second position whereat it is released from meshed engagement with the second gear.
Patent CA-2245140-A1 (CA)
Title: Apparatus for inflating and deflating a dunnage bag
Inventor: VOLLER RONALD L
IPC: B65D81/05
Filed: 1998-08-12
Abstract: A reusable dunnage bag is provided for placement between or among boxes or packages of diverse products packed or stored for shipment in trailers or containers so as to cushion and protect the products from damage in being transported from one location to another. The bag includes a self closing valve operable to open so as to permit entry of pressurized medium into the bag, but automatically closes when fully inflated. A gun-like device having dual nozzle means is provided for opening the self closing valve for rapid admission of gaseous medium into the bag and for opening the valve to quickly expel the medium therefrom. A discernible difference in noise frequency signals an operator to remove the connection between the gun and the self closing valve when inflation of the bag is complete.
Patent CA-2245737-A1 (CA)
Inventor: DENT PAUL WILKINSON
IPC: H04B7/10
Filed: 1997-03-27
Abstract: A base station (300) for communicating with at least one mobile station in a cellular communications system includes a plurality of receive antennas (322a-322e) wherein each receive antenna is oriented to define a respective receive coverage area. The antennas are supported by a support structure (318) so that a first receive antenna defines a first receive coverage area (352) and a second receive antenna defines a second receive coverage area (354) overlapping a portion of the first receive coverage area (358). First and second wideband receivers (332a, b) are operatively connected to respective first and second antennas (322a, b). The first wideband receiver receives a first plurality of receive channels from the first receive coverage area, and the second wideband receiver receives a second plurality of receive channels from the second receive coverage area. The first and second pluralities of receive channels include at least one common receive channel. The base station also includes first and second channel splitters (336a, b) operatively connected to the respective first and second wideband receivers for separating the first and second pluralities of receive channels. A diversity combiner (338b) is operatively connected to the first and second channel splitters for combining the common receive channel from the first and second channel splitters. Accordingly, an enhanced quality output receive channel is produced.
Patent CA-2246919-A1 (CA)
Title: Ceramics fixing heater containing silicon nitride
Inventor: NATSUHARA MASUHIRO
IPC: G03G15/20
Filed: 1998-09-11
Abstract: A heater for fixing a toner image suffers no cracking of the ceramics substrate thereof, has a high connection reliability between an electrode and a connector thereof and capable of attaining an improved fixing speed and a size increase of a transfer material. The heater, which is adapted to heat and fix a toner image on a transfer material, comprises a ceramics substrate containing silicon nitride and a heat generator formed on the ceramics substrate. The thermal conductivity and the transverse rupture strength of the silicon nitride forming the ceramics substrate are preferably at least 40 W/mK and at least 50 kg/mm2 respectively, and the thickness of the ceramics substrate can be reduced to 0.1 to 0.5 mm.
Patent CA-2247149-A1 (CA)
Title: Methods and devices for joining transmission components
Inventor: DIMATTEO STEPHEN
IPC: A61B17/00
Filed: 1997-12-12
Abstract: A coupling structure releasably attaches a plurality of transmission members to each other. Non-vibratory structures hold a second end of the first transmission member (84, 204, 256, 272) in contact with a first end of the second member (86, 224, 258, 272). A method including the steps of providing a first non-vibratory structure (52, 202, 252) carrying the first transmission member (84, 204, 256), and providing a second non-vibratory structure (122, 222, 253) carrying the second transmission member (86, 224, 258). The method also includes the steps of attaching the first non-vibratory structure (52, 202, 252) to the second non-vibratory structure (122, 222, 253) to hold a coupling end of the first transmission member (84, 204, 256) in contact with a coupling end of the second transmission member (86, 224, 258) without the use of a threaded connection between the first and second components.
Patent CA-2248428-A1 (CA)
Inventor: GAMMON SCOTT
IPC: E04B2/74
Filed: 1998-09-25
Abstract: A lightweight panel for use in modular and free standing office landscape systems. When assembled with other panels, they form free standing partitions, which can be arranged and rearranged into a variety of layouts. Panels can be interconnected in a variety of positions to create a wide variety of panel layouts. There are four types of panels, constructed in each their own way. All the panel types are symmetrical and can be used in any orientation. This is accomplished through the use of the same structural elements on each corner of the panel and along all four sides of the panel.  These structural elements are the connection points to which connectors are affixed in order to attach panels together in an assembly. All panel types have these characteristics in common; the center core of the panel is hollow and can remain as such or can be filled with a material to provide additional structure and/or sound absorption/reflective characteristics, a channel surrounding the perimeter to allow for connectors and trim to affix to the edge of the panel, a flat outer surface onto which a covering may be placed to cover the outer surface of the panel, a channel or edge hidden from the outer surface so that the edge of the covering may be finished by wrapping around the edge or fitting into the channel to complete the finished look of the outer surface, a location along the edge of the panel to insert or screw a glide, and at all four corners of the panel, a connection device to allow for panels to be connected together. The first panel type being a single symmetrical part, plastic molded panel with finished outer surfaces, and molded in any height and width. The second panel type being a two piece panel, having both parts produced from the same mold and being of the same structure. The methods of affixing the two halves includes snap fits, adhesives such as glue or tape, mechanical fasteners such as screws, bolts or staples, and welding. The third type is a single plastic molded part acting as the perimeter frame and having two outer surface panels affixed to the outside perimeter of the frame on both sides, to create a finished structural panel. The panels can be affixed using either adhesives, mechanical fasteners, snap fits, and/or welding. The fourth type of panel being a two piece panel, having both parts of different structure, and produced from different molds. The methods of affixing the two halves includes snap fits, adhesives, mechanical fasteners, and/ or welding.
Patent CA-2251280-A1 (CA)
Title: Amplificateur optique semi-conducteur et source laser integree l'incorporant
Inventor: SALET PAUL
IPC: H01S5/026
Filed: 1998-11-09
Abstract: Pour éviter les phénomènes d'autofocalisation et d'astigmatisme de l'onde amplifiée, l'amplificateur comporte successivement : - un segment d'entrée (SE) muni d'un guide d'entrée (GE) apte à guider une onde d'entrée monomode, - un segment de diffraction (SD) comprenant un premier milieu transparent (5) pour ladite onde d'entrée monomode et apte à l'élargir, - un segment de collimation (SC) , et - un segment d'amplification (SA) muni d'un guide amplificateur (GA) de largeur supérieure à celle dudit guide d'entrée (GE). L'amplificateur permet de réaliser une source laser de forte puissance fournissant une onde à mode fondamental élargi. Application pour produire les ondes de pompe d'amplificateurs optiques à fibre.
Patent CA-2251416-A1 (CA)
Inventor: WONG DANIEL C W
IPC: H04N21/6437
Filed: 1998-10-26
Abstract: A scheme is provided that permits the use of a selectable depacketization module to depacketize data streams. An RTP session manager is responsible for receiving RTP packets from a network and parsing/processing them. A depacketizer module is located using the type of data received on the stream. Thus a specific depacketizer is located at runtime depending on the coding decoding scheme ("codec") used to compress the incoming data stream. A naming convention is followed in order for a specific depacketizer to be located. The depacketizer receives data that has already been parsed and is in a readable form. The depacketizer outputs this data using a well defined interface. This interface has been designed such that it is generic across a number of codecs. The interface passes all relevant information to the decoder where the actual depacketized data stream will be decompressed. The session manager need not know of any codec details since the depacketizer handles all codec specific issues. A default format is described for data that is output by a depacketizer. There is provision for a depacketizer to output data in this pre-defined format. However, there is also a provision for a depacketizer to output data itself in apre-defined format. This data is provided to a handler that is aware of this format, so that the integration of depacketizers is seamless. Thus, a depacketizer can be made available as long as it implements certain defined interfaces.
Patent CA-2257545-A1 (CA)
Title: Binders for cores and molds
Inventor: TSE KWOK-TUEN
IPC: C04B24/04
Filed: 1997-05-23
Abstract: No-bake inorganic binder compositions for binding particulate material and methods for curing such inorganic binders. The inorganic binder compositions are composed of silicate and phosphate components. The no-bake compositions further contain curing catalyst such as a catalyst selected from the group consisting of aliphatic carbonates, cyclic alkylene carbonates, aliphatic carboxylic acid esters, cyclic carboxylic acid esters, phosphate esters and mixtures thereof. The composition produces a binder having the advantageous strength properties of a silicate binder system with the water breakdown properties of a phosphate binder system. Thus, relative to an all-silicate binder system, the present invention has improved mechanical shakeout and improved water collapsibility. Also, relative to conventional all-phosphate binder system, the present invention has superior hot strength, i.e., the foundry cores and molds do not soften at elevated temperatures. Methods of making and using the binder compositions and the resulting products are of particular interest to the foundry art.
Patent CA-2258703-A1 (CA)
Title: Compositions de detergent liquide a faible pouvoir moussant comprenant un supresseur de mousse de savon a base de silicone et un ester d'acide gras
Inventor: BAETS PETER JOHANNES MARIE
IPC: C11D1/04
Filed: 1997-06-23
Abstract: L'invention concerne un détergent liquide comprenant un suppresseur de mousse de savon à base de silicone et un ester d'acide gras de formule (1), dans laquelle R¿1? est une chaîne alkyle ramifiée, linéaire, non saturée ou cyclique à 1 à 20 atomes de carbone, et R¿2? est une chaîne alkyle linéaire, ramifiée ou non saturée à 7 à 25 atomes de carbone.
Patent CA-2260196-A1 (CA)
Inventor: HAWN CLIFFORD W
IPC: E21B31/20
Filed: 1997-07-03
Abstract: Apparatus (1; 100) for retrieving an object (30) from a wellbore (35), the apparatus comprising a hollow body (2; 104) able to be secured at its uphole end to a well string or tube (36), the hollow body (2; 104) having mounted on it an actuator (6, 106) which is movable longitudinally of the body (2; 104) between a rest position and an operative position and is biased towards its rest position by a spring (12, 114) and a plurality of circumferentially-spaced, longitudinally-extending fingers (20; 140) at its downhole end, the fingers (20; 140) having radially-directed ends (145) adapted to engage in an annular recess (31) in the uphole end of the object (30) to be retrieved, the fingers (20; 140) being movable between an inoperative position, in which, in use, the apparatus is able to move longitudinally relatively to the object (30) and an operative position, in which the fingers enter and engage the recess (31) in the object (30) so as to secure the object against relative longitudinal movement, wherein the movement of the fingers is facilitated by movement of the actuator relative to the fingers, which movement is effected by the flow of hydraulic fluid through the body (2; 104) so as to counteract the spring bias. The apparatus may take the form of a spear fishing tool or an overshot fishing tool.
Patent CA-2263699-A1 (CA)
Inventor: GIANNUZZI LOUIS N
IPC: F16B25/00
Filed: 1999-02-26
Abstract: An enhanced strength screw-type, self-tapping masonry anchor for fastening a fixture or other attachment to masonry in which a hole is drilled to receive the anchor.        The anchor is provided with a shank having a root section surrounded by at least one helical male cutting thread whose crest diameter exceeds the diameter of the hole whereby when the anchor is screwed into the hole, the cutting thread then cuts a female thread in the bank of the hole to mechanically retain the anchor therein to impart to the anchor a holding power that resists axial pull-out forces. Formed on the root in the helical land between successive convolutions of the thread is a ridge that is raised above the root to define a compacting zone between the ridge and the bank of the hole.
Patent CA-2267071-A1 (CA)
Title: Panelized spray-cooled furnace roof
Inventor: BELLWOOD ERIC
IPC: F27D1/18
Filed: 1997-09-24
Abstract: Spray-cooled roof for a metallurgical furnace in the form of an assembly of separate hollow metal sections, each of which has a separate spray cooling system.
Patent CA-2272925-A1 (CA)
Inventor: GOLDSTEIN JACK
IPC: A61K35/18
Filed: 1997-11-19
Abstract: The present invention relates to an improved method for enzymatically removing blood type-specific antigens from erythrocytes, comprising titrating the pH of the erythrocytes first to a pH suitable for enzyme activity and then, once the desired extent of antigen removal has been achieved, to a pH appropriate for storage and/or transfusion. The buffers used for titration have pH values significantly above or below the target pHs for erythrocyte conversion or storage/transfusion. The invention is based, at least in part, on the discovery that the structural integrity of the erythrocytes is not substantially disrupted by titration. The present invention further relates to methods wherein the addition of polyethylene glycol improves the efficiency of enzymatic removal of erythrocyte antigens.
Patent CA-2274743-A1 (CA)
Title: Document collector, diverter and stager apparatus and method
Inventor: LUCAS GREGORY T
IPC: B65H39/10
Filed: 1997-08-27
Abstract: The present invention relates to an apparatus and method for collecting sheet articles, diverting or advancing the collected sheet articles and staging and further advancing the advanced sheet articles at a predetermined time.      Conventional article processing apparatuses utilize solenoid divert gates, stop bracket/movable roller arrangements, lugged timing belt conveyors, and metal chain/push pin conveyors, which limited article processing speeds and increased machine complexity and wear. In accordance with the invention, a document collector, stager and diverter apparatus (10) and method are provided for processing sheet articles through first and second stages (20,20') without utilizing the above devices. The first stage (20) receives sheet articles (SA) advanced thereto and collected therein and includes a first transport mechanism (22A, 22B) being operative for selectively diverting collected sheet articles in a divert direction opposite to the conveying direction of the sheet articles. Alternately, the first transport mechanism is operative for selectively advancing the collected sheet articles from the first stage to the second stage. In the second stage, sheet articles can be independently processed and held until a predetermined time when they can be advanced from the second stage by a second transport mechanism (22A',22B'). The first and second transport mechanisms each preferably includes plastic chains each with plastic lugs (LA1-LB4') thereon.  The chains of the first and second transport mechanisms are simultaneously rotatably movable by a motor (M, M') and gears (36A, 36B) or pulleys associated therewith.
Patent CA-2275409-A1 (CA)
Title: Source detection apparatus and method for audience measurement
Inventor: LU DAOZHENG
IPC: H04H60/41
Filed: 1997-05-27
Abstract: A system identifies which of first and second signal sources is supplying a program signal to a monitored receiver. The first and second signal sources and the monitored receiver are located in a household. The system extracts a reference program signature representative of an output of the monitored receiver and first and second source program signatures representative of an output of the first and second signal sources. The system identifies which of the first and second signal sources is a source of the program signal in response to the reference program signature and the first and second source program signatures.