baber/WOPTO huggingface dataset:
Patent CA-2205728-A1 (CA)
Title: Inflatable packer with port collar valving
Inventor: STOKLEY CHARLES O
IPC: E21B34/14
Filed: 1997-05-20
Abstract: An inflatable packer 10 includes a sliding collar 86 which opens and closes port 94 to control pressurization of the inflatable packer element 120 with a cementatious fluid. The collar 86 is axially moveable by a setting tool 20 suspended in the well from a work string WS. An annular passageway 76 in the packer body extends from the inlet port 94 to the packer element 120 to provide for reliable inflation with the cementatious fluid. The collar 86 provides metal-to-metal sealing engagement with the radially inner sleeve 76 of the packer body to reliably seal the inflation chamber from the well fluids when the collar 86 is moved closed.
Patent CA-2209079-A1 (CA)
Title: Polybenzimidazole compounds in solution and a process for the preparation thereof
Inventor: MURATA MAKOTO
IPC: C08L79/04
Filed: 1997-06-25
Abstract: Improved process for producing a polybenzimidazole compound in solution by dissolving a fully dried polybenz-imidazole of the following general formula (1) or (2) in N,N--dimethylacetamide of a sufficiently reduced water content at an elevated temperature of 260°C or higher in an inert gas atmosphere and a solution of the polybenzimidazole compound produced by the process. The solution remains useful for an extended time without using metal salts or any other stabilizers:   (see formulas 1 and 2) where R1, R2 and R5 are tetra-, di- and trivalent aromatic groups, respectively; R3, R4 and R6 are each independently a hydrogen atom, an alkyl group or an aryl group; n is an integer of 2 or more.
Patent CA-2213096-A1 (CA)
Inventor: WIENER MICHAEL JAMES
IPC: H04L9/08
Filed: 1997-08-14
Abstract: The invention allows for transporting, in different degrees of security strength, a symmetric key encrypted using an asymmetric encryption technique, and along with this transporting ciphertext derived from plaintext encrypted under this symmetric key. The encryptor encrypts the plaintext using a symmetric whose strength is commensurate with the trust level of the environment in which the encryptor is located. The encryptor encrypts this symmetric key for one or more intended recipients using an asymmetric technique commensurate with a high-trust environment. In the case of the encryptor residing in the low-trust environment, additionally encrypts this symmetric key using an asymmetric encryption public key of the originator itself (or alternatively, that of a third party). Decryption equipment in all environments uses the decryption process corresponding to an algorithm identifier included by the originator. In all cases, the asymmetric encryption/decryption process used for each specific recipient is of a strength commensurate with the trust level of that recipient's own environment.
Patent CA-2214619-A1 (CA)
Title: Clip
Inventor: SATO HISAO
IPC: B42F1/02
Filed: 1997-09-04
Abstract: A clip which is made from a band-like metal plate having spring characteristics, in which opening of the clip can be performed by a considerably weak force, in which setting is less even if sheets of paper having a stack thickness nearly equal to the maximum clipping thickness, and which comprises a body including a back portion formed at a longitudinal center portion of the band-like metal plate so as to have a length substantially corresponding to the maximum clipping thickness, and abutment portions formed adjacent to the back portion so that the respective free ends of the abutment portions form abutting edges which abut against each other for clipping sheets of paper; a pair of finger grips for opening the abutting edges of the abutment portions, the finger grips being attached to the abutment portions respectively in a manner so that each of the finger grips is formed into a U-shape and respective free ends of the U-shape of the finger grip are rotatably inserted into lock portions formed at each of the abutting edges of the abutment portions; at least three bent portions formed in the body for giving elastic forces to the abutment portions so as to make the abutting edges of the abutment portions elastically contact with each other; and an opening provided in a widthwise center portion of the back portion so that corner part of sheets of paper can be projected out of the opening, the opening being extended into the abutment portions.
Patent CA-2215482-A1 (CA)
Title: Suction box with side fillers
Inventor: FEILER BRUNO
IPC: D21F1/52
Filed: 1997-09-12
Abstract: A suction box for a machine for manufacturing a fiber web extends transverse to the travel direction of a porous belt and applies suction to the belt and the fiber suspension on the belt. The suction box has an open side toward the belt. At least two and more usually a plurality of support strips contact and extend transverse to the travel direction of the belt. Each adjacent pair of strips defines a suction slot. At one or both lateral side zones of the belt, a respective filler limits each slot, and the fillers establish the length of the slot across the belt. A respective filler extension extends inward from each of the fillers. The extensions are pervious to the fluids being suctioned, such as water and air, by being narrowed or wedge shaped or by being perforated. The fillers with their extensions are adjustable in position transverse to the direction of travel.
Patent CA-2216558-A1 (CA)
Title: Process and apparatus for controlling gravity settling system
Inventor: DOUCET JEAN
IPC: B01D21/30
Filed: 1996-04-16
Abstract: A testing device is described for use in determining optimum operating conditions for a full size industrial continuous gravity settling unit and for the design of such settling unit. The testing device comprises an elongated, cylindrical settling column having concentric, inner and outer transparent cylindrical walls forming an annular space therebetween filled with transparent heat exchange liquid, with the inner wall defining a cylindrical settling cell. A cylindrical feedwell extends downwardly into the top end of the settling cell, an overflow outlet opening is provided in the inner wall at a location above the bottom end of said feedwell, a solids discharge opening is provided at the bottom of the settling cell and a rotating rake is provided at the bottom of the settling cell for compacting collected solids. The device also includes pump means for providing smooth, continuous flows of slurry and flocculant, mixing means for mixing together the slurry and flocculant, and means for measuring and controlling flow rates and temperatures. The testing device is utilized by observing the position and shape of a stream of agglomerated solids leaving the bottom of the feedwell of the settling column and adjusting the flow rate of at least one of the flow rate of the stream of suspended solids and the flow rate of the stream of flocculating agent to the settling column such that the stream of agglomerated solids leaving the feedwell displays hindered settling, and utilizing the adjusted flow rates of the suspended solids stream and the flocculant stream to determine the optimum operating conditions for an industrial settling unit.
Patent CA-2216740-A1 (CA)
Title: Cervical muscle evaluation apparatus
Inventor: HANOUN REED
IPC: A61B5/11
Filed: 1997-09-29
Abstract: A cervical muscle evaluation apparatus comprises a head station which is adjustable to different head sizes and shapes, a body positioning unit which positions the user's body for head placement in the head station and an indicator which indicates cervical muscle controlled head movement of the user's head within the head station.
Patent CA-2218217-A1 (CA)
Title: Reduced complexity signal transmission system
Inventor: WUPPERMANN FRIEDHELM
IPC: G10L19/12
Filed: 1997-01-31
Abstract: In a CELP coder a comparison between a target signal and a plurality of synthetic signals is made. The synthetic signal is derived by filtering a plurality of excitation sequences from a one-dimensional codebook by a synthesis filter having parameters derived from the target signal. The excitation signal which results in a minimum error between the target signal and the synthetic signal is selected. The search for the best excitation signal requires a substantial computational complexity. To reduce the complexity a preselection of a small number of excitation sequences is made by selecting only every L th codebook entry for preselecting a plurality of excitation sequences. With this small number of excitation sequences a full complexity search is made in which all excitation sequences surrounding the preselected ones are involved in the selection.
Patent CA-2219760-A1 (CA)
Title: Method and apparatus for automatically extracting and retracting an antenna in a wireless telephone
Inventor: LEE HAN-SANG
IPC: H04M1/03
Filed: 1997-10-31
Abstract: When an operation such as opening or closing of a front flip cover or a key operation of communication-start or communication-end occurs, a controller acquires information for extraction or retraction of an antenna. Basing on the above information, the controller controls a motor driving by intermittently supplying motor driving signal by which the motor can rotate clockwise or counterclockwise during a preset time necessitated for fully extracting and retracting an antenna. While motor driving, if a blocking force applied to an antenna, the controller repeatedly stops supplying of the driving signals to the motor for a predetermined interval and then resumes supplying the signals. A gear unit is tightly coupled in a body with the motor, receives a rotating force from the motor shaft, and extracts and retracts an antenna. In addition, there is further provided a fixing element for fixing the motor and the gear unit to an antenna housing, which is able to absorb external impact transferred to the motor and the gear unit through an antenna and to absorb a vibration of the motor. When a front flip cover is opened or a communication-start key is pushed by a user to use a wireless telephone, the antenna is automatically extracted from the antenna housing, while when the front flip cover is closed or a communication-end key is pushed, the antenna is automatically retracted into the antenna housing.
Patent CA-2219845-A1 (CA)
Inventor: LAURICHESSE CHRISTIAN
IPC: B65D3/22
Filed: 1997-11-21
Abstract: L'invention concerne un procédé d'emballage d'adhésif thermofusible réactif qui consiste à verser la composition adhésive à l'état fondu directement dans un conteneur (1) revêtu d'un matériau (2) anti-adhérent sur sa face interne et d'un matériau (3) à l'épreuve de l'humidité sur sa face externe, ledit conteneur étan t muni d'au moins une amorce d'ouverture facile; et fixer un couvercle (4) à l'épreuve de l'humidité sur la face libre du conteneur. Elle concerne également les adhésifs emballés ainsi obtenus.
Patent CA-2220097-A1 (CA)
Inventor: GARTH HARALD
IPC: B21D51/10
Filed: 1996-03-19
Abstract: Un dispositif de cintrage (10) comporte deux poinçons de formage (12, 14) munis de chambres de formage (22, 24), se présentant de manière à effectuer un cintrage d'un flan (26) autour d'un noyau (16). Chacune des longueurs périphériques des deux chambres de formage (22, 24) est supérieure à la moitié de la périphérie de la boîte. Au cours d'une étape de préformage, le noyau (16) pénètre dans une première chambre de formage (22) sur une distance supérieure au rayon de la boîte. Le flan (26) est ainsi façonné en U. Au cours d'une étape de formage intermédiaire, un noyau auxiliaire (18) est monté sur le noyau (16), de manière à ce que lorsque le second poinçon de formage (14) descend, seules les extrémités des branches du U de l'ébauche de flan (26) soient cintrées en arc de cercle. Après éloignement du noyau auxiliaire (18) et d'une partie (20) du premier poinçon de formage (12), a lieu l'étape de formage final de la boîte, au cours de laquelle le second poinçon de formage (14) passe également au-dessus du centre de la boîte. Ce procédé de cintrage en trois étapes permet de cintrer des boîtes de manière très précise, sans les altérer.
Patent CA-2226732-A1 (CA)
Title: Dispositif scelle pour interconnexion
Inventor: SWETT JAMES ELMS JR
IPC: H01R4/70
Filed: 1996-05-06
Abstract: Ce dispositif d'interconnexion électrique (2) comprend un élément électrique (6) et un élément de scellement (8) disposés dans un corps (4). Celui-ci est composé d'une première (19) et d'une deuxième (12) parties fixées l'une sur l'autre pour former une enceinte recevant l'élément électrique et l'élément de scellement. Des passages scellés (18) partent de l'élément de scellement jusqu'à l'élément électrique. Des substrats (26) sont introduits au travers de l'élément de scellement (8) dans ces passages (18) pour se connecter à l'élément électrique (6).
Patent CA-2227618-A1 (CA)
Title: Couche de recouvrement et d'extraction de la lumiere a surface structuree et systeme d'illumination
Inventor: LUNDIN DAVID J
IPC: F21V8/00
Filed: 1996-07-02
Abstract: Cette invention concerne une couche de recouvrement (10) permettant d'extraire la lumière d'un endroit voulu sur un guide de lumière (30), laquelle couche comprend un substrat optique (14) sensiblement transparent possédant une surface de base (14) ainsi qu'une surface structurée opposée (16) à la surface de base (14). La surface structurée (16) comprend des éléments optiques (18) ayant des surfaces optiques (20, 22) lisses et disposées selon un angle relatif par rapport à la surface de base (14). Les éléments optiques (18) possèdent de préférence un revêtement en matériau à réflexion spéculaire, et peuvent être séparés par des parties sensiblement planes (24) de la surface structurée (16). Lors du fonctionnement, la surface de base (14) se trouve en couplage optique avec une partie de la surface d'un guide de lumière (30), de sorte que la lumière puisse être transmise de la fibre optique (30) dans le substrat (12). Les rayons lumineux qui heurtent une partie plane (24) de la surface structurée (16) sont réfléchis dans la fibre (30) selon un angle qui est supérieur à l'angle critique nécessaire à une propagation continue dans le guide de lumière (30), et continuent donc à se propager le long de ladite fibre optique (30). Les rayons lumineux qui heurtent un élément optique (18) sont réfléchis dans la fibre (30) selon un angle qui est inférieur à l'angle critique nécessaire à une propagation continue dans le guide de lumière (30), et sont donc transmis depuis la surface du guide de lumière (30).
Patent CA-2227887-A1 (CA)
Title: Pharmaceutical compositions of conjugated estrogens and methods for their use
Inventor: HUBER HAROLD E
IPC: A61K31/56
Filed: 1996-07-26
Abstract: This invention relates to novel pharmaceutical compositions and methods for their preparation containing conjugated estrogens for the treatment of peri-menopausal, menopausal and post-menopausal disorders in women. The novel pharmaceutical compositions comprise a carrier base material and conjugated estrogens formed into a solid unit dosage form possessing a regular incremental release of the medicament upon oral administration. Further, the invention comprises the combination of conjugated estrogens with progestogens in a solid, shaped dosage unit. Specifically, the invention comprises the use of an organic excipient such as high molecular weight hydroxyalkyl alkylcelluloses. The use of an organic excipient such as hydroxypropylmethylcellulose in a stable, solid dosage formulation containing either conjugated estrogens alone or in combination with a progestogen is described.
Patent CA-2228497-A1 (CA)
Title: Fuel pellet and method of making the fuel pellet
Inventor: ANDREWS MICHAEL R
IPC: C10L5/40
Filed: 1996-08-02
Abstract: A fuel pellet and a method of manufacturing a fuel pellet capable of burning in either a stoker or pulver furnace, comprising from about 0 to about 80% by weight of cellulosic material, from about 1% to about 50% by weight of densified thermoplastic material, and from about 0 to about 50% by weight of coal. The cellulosic material, densified thermoplastic material and coal are ground from about 80 Mesh to about 200 Mesh, and then blended into a mixture wherein the contents are evenly distributed throughout. Following the blending process, the mixture is forced through a pelletizer. As the pellets are removed from the pelletizer they are immediately cooled so that the densified thermoplastic particles do not melt. The resulting fuel pellets produce from about 10,000BTU per pound to about 16,000 BTU per pound and leave an ash deposit of about 0 to about 6% by weight, and a sulfur dioxide output of about 0 to about 3% by weight.
Patent CA-2229344-A1 (CA)
Inventor: WAHL GUENTER
IPC: B01J31/18
Filed: 1996-09-04
Abstract: L'invention concerne des catalyseurs de la formule (I) pour l'expoxydation d'oléfines. Dans cette formule (I) M représente un métal du 4ème au 7ème sous-groupe de la classification périodique des éléments, L<1> représente un ligand aminoxyde, phosphanoxyde, arsanoxyde, pyridin-N-oxyde ou pyridine de la formule (II), (III), (VII) ou (VIII); L<2> représente un ligand auxiliaire usuel ou un autre ligand L<1> ou un site de coordination libre; X représente de l'oxo-oxygène ou des ligands imido; m vaut 1 ou 2 et n vaut 1, 2 ou 3.
Patent CA-2230519-A1 (CA)
Title: Body rest structures
Inventor: LEUNG PATRICK WAI-CHUNG
IPC: A47C20/02
Filed: 1998-02-25
Abstract: A body rest structure includes a torso support for supporting the torso of a human body in a prone, elevated position which serves to induce a mild stretch of the user's thoracic and lumbar vertebrae. The support includes an upper chest and shoulder support platform and a lumbar support platform. An open region extends longitudinally between theplatforms to provide room for at least a portion of the weight of the chest below the shoulders to pull down on the body between the platforms. The support may include a rear supporting surface to provide lifting support from below the hips and abdomen of the body. A head support for supporting the head of the body in a downwardly facing position. is also disclosed. The head support includes a front portion for providing lifting support to the forehead of the body, and parallel opposed side portions for supporting opposed sides of the face, and may be sized and positioned to cooperate with the torso support to enable a mild stretch of the user's cervical vertebrae.
Patent CA-2231563-A1 (CA)
Title: Products and methods for circulatory system valve repair
Inventor: LOVE JACK W
IPC: A61F2/24
Filed: 1996-10-03
Abstract: A standardized and reproducible method and instruments related thereto for repair of atrio-ventricular, aortic and pulmonary valves is provided.
Patent CA-2232665-A1 (CA)
Title: Screening arrangement
Inventor: FREDRIKSSON BOERJE
IPC: B01D29/25
Filed: 1996-09-26
Abstract: An arrangement for screening pulp suspensions, comprising a casing (1) with an inlet (5) for inject and outlets (16, 18) for accept and reject. Between a stationary screening member (2) located in the casing (1) and a drum-shaped rotor (3) located inside the screening member, a screening zone (4) is formed. The inject inlet (5) is provided for the supply of the pulp to the lower portion of the inside of the rotor (3). At least one opening (6) is provided in the upper portion of the rotor (3) for transferring the pulp to the screening zone (4). The inside of the rotor (3) is formed for moving heavy impurities to a chamber (8, 13) in connection to one end of the rotor (3).
Patent CA-2233217-A1 (CA)
Title: A system and method for loading applications onto a smart card
Inventor: LISIMAQUE GILLES
IPC: G07F7/10
Filed: 1997-08-29
Abstract: A system for loading an applet and its associated use rights into a smart card having other applets with associated use rights with values that change as the application is used is provided that stores, remotely from said smart card, an applet and use rights with a predetermined initial value, associated with the applet, and has a smart card having a processing unit, and a memory unit, the memory unit being connected to the processing unit and storing a second application having use rights. The smart card may be connected to said remote storage means, and the application, having use rights with a predetermined value, may be loaded from said remote storage means into said smart card. A  smart card is also provided having a processor for executing an application, a memory, connected to the processor, for storing multiple applications, including a first application having first use rights and having first values associated with the first use rights, the first value changing from a predetermined initial value with use of the first use rights, a system for loading in the smart card a second application from a remote location over an interface, the second application having second use rights, a system for storing said second application into said memory in said smart card, and a system for changing the use rights of said first application and said second application. A method of replenishing the use rights in a smart card is also provided.
Patent CA-2233750-A1 (CA)
Inventor: MARSHALL CARL J JR
IPC: C04B20/10
Filed: 1998-04-02
Abstract: An  improved  finely  divided  rubber-reinforcing  clay mineral composition can be produced by employing a hydrous kaolin clay surface treated with a functional silane,  a methylene donor compound such as hexamethylenetetramine, and a multifunctional methylene acceptor such as resorcinol. A novel process of preparation is provided.   The  improved reinforcing,  treated  clay  filler  can  be  combined  with natural or synthetic elastomer compositions which can be cured to elastomer products which have improved physical properties, such as modulus, tensile, tear, wear resistance and/or resistance to heat build-up.
Patent CA-2234515-A1 (CA)
Inventor: ZWAAL ARIE
IPC: G01N21/88
Filed: 1996-09-26
Abstract: L'appareil de mesure selon l'invention comprend une base annulaire (11) entourant une plaque témoin Plaque témoin (Pla) contaminée par des particules, à laquelle sont fixées, équi-réparties, des diodes électroluminescentes (D1, Dx), émettant sur une longueur d'onde de 630 nm. Dans une variante préférée, ces diodes (D1, Dx) sont au nombre de douze et illuminent la surface supérieure de la plaque témoin (Pla) sous faible incidence. La structure annulaire inférieure (11) supporte une enceinte optique cylindrique (10), surmontée d'une structure supérieure annulaire (12). Cette dernière supporte un détecteur du type "CCD" (122) mesurant la lumière diffusée par les particules et un filtre optique (124) centré sur la longueur d'onde 630 nm. Le filtre (124) et le détecteur (122) sont amovibles de manière à pouvoir les remplacer par un microscope.
Patent CA-2234836-A1 (CA)
Inventor: RONALD DAVID A
IPC: B66F9/08
Filed: 1998-04-14
Abstract: A carriage suspension system for use with a lift truck having a tractor  a mast including a vertical track and a carriage suspended from the track for movement therealong. The carriage is raised and lowered via chains,  one end of each chain being secured via a compressible spring which isolates the carriage from tractor vibrations and oscillations.  The track restricts lateral carriage movement.