baber/WOPTO huggingface dataset:
Patent CA-2209353-A1 (CA)
Inventor: KOZYCKI LAWRENCE V
IPC: B01D45/12
Filed: 1997-06-30
Abstract: An apparatus to recover at least a portion of small particles of gold from a slurry material is provided.  The apparatus comprises a) a cylinder having a top end, an opposite bottom end, a longitudinal axis and a cylinder wall circumscribing the longitudinal axis; b) separating means; c) means, disposed adjacent the cylinder wall within the cylinder, for holding the gold directed toward the cylinder wall; d) discharge means for directing the centrifugally-separated slurry material from the cylinder; and e) means for powering the separating means. The separating means can comprise pumping means for directing the slurry material through the bottom end of the cylinder and into the cylinder, and spinning means for applying a centrifugal force to the slurry material within the cylinder so that at least a portion of the gold within the slurry material is directed toward the cylinder wall. The powering means can comprise a motor producing a rotational output, and a drive shaft having a first end connected to the motor and a second end connected to the separating means, so that the rotational output of the motor is translated to the separating means.
Patent CA-2209553-A1 (CA)
Title: Survey apparatus and methods for directional wellbore wireline surveying
Inventor: WRIGHT ERIC
IPC: E21B47/022
Filed: 1997-07-04
Abstract: A wellbore survey method and apparatus which includes a gyroscope, wherein the gyroscope has a spin axis, aligned with the instrument axis, and further having two sensitive axis orthogonally related to the spin axis and to each other. In addition, the wellbore survey apparatus contains a drive means, functionally connected with the gyroscope, to rotate the gyro about the instrument axis. The wellbore survey apparatus also contains a set of accelerometers, wherein the sensitive axis are aligned orthogonally to each other, and said drive means is functionally connected to the accelerometers to rotate the accelerometers about the instrument axis. Sensors determine the azimuthal direction of inclination of the wellbore at a first location therein and while traversing from said first location. Attitude references of the wellbore with regard to said first location are determined while the tool is continuously traversing through the wellbore.
Patent CA-2215539-A1 (CA)
Inventor: SIGG REINHARD
IPC: C07C69/82
Filed: 1997-09-15
Abstract: Disclosed are a catalyst for cleaning a pressurized off-gas obtained after the oxidation of para-xylene with air in the liquid phase in the preparation of dimethyl terephthalate, which comprises: a)  at least one oxide of titanium, and b)  at least one elements form subgroup VIII of the Periodic Table of the Elements in the metal or oxide form, a process for preparing the catalyst by applying the component b) to a shaped article which comprises at least the component a), individually or in a mixture by dip impregnation or spray impregnation, and a method of cleaning a pressurized off-gas obtained after the oxidation of para-xylene, in which the pressurized oxygen-containing off-gas from the oxidation is led first via a single-stage or multistage condensation, a single-stage or multistage absorption and subsequently, with or without the supply of oxygen, via a catalytic afterburner operated under pressure employing the catalyst.
Patent CA-2216652-A1 (CA)
Inventor: RENKEN RICHARD K
IPC: B65G53/52
Filed: 1997-01-28
Abstract: La présente invention concerne un système (10) de transport de glace depuis un bac primaire (12) vers un ou plusieurs bacs satellites (20, 25, 26). Un distributeur (13) réalise, dans une chambre de pré-charge (15), une charge de glace qui est transférée par pression d'air vers un tube de débit (T). Un piston (21) qui vient au contact de la charge de glace, la déplace vers un bac satellite (20, 25, 26). Ce piston (21) est mu dans le tube (T) par la pression d'air fournie par la même source que celle qui sert au transfert de la charge à partir de la chambre de pré-charge (15). Avant d'atteindre les bacs satellites (20, 25, 26), le mouvement de navette du piston (21) le fait reculer jusqu'à sa position de départ. Les bacs satellites (20, 25, 26) étant montés en série, le débit de la charge dans un bac intermédiaire (25, 26) résulte du mouvement de désalignement d'un segment de tube (T3, T') par rapport au tube de débit (T). La lubrification et le nettoyage continu sont assurés par le piston (21) qui racle l'eau résiduelle provenant de la glace en fusion. Un contrôleur (110) qui coordonne le fonctionnement du système, assure la surveillance et la reprise de tous les paramètres.
Patent CA-2217406-A1 (CA)
Title: Suture anchor installation system with disposable loading unit
Inventor: LEE DANIEL R
IPC: A61B17/04
Filed: 1997-10-03
Abstract: A suture anchor installation system includes a suture anchor, a loading unit, and a suture anchor installation tool. The suture anchor includes an elongated setting pin at least partially mounted within a longitudinal bore of a socket and slidably movable between a distal first position wherein at least a portion of the setting pin is distal to the socket and a proximal second position, the socket having at least two proximally pointing legs which are radially expandable in response to movement of the setting pin to the proximal second position. The loading unit includes a housing and a collet movably mounted within an axial bore in the housing, the collet having arms for releasably gripping the suture anchor. The suture anchor inserter has a first tubular member for engaging the collet, and a second tubular member for releasably engaging the socket of the suture anchor.
Patent CA-2217839-A1 (CA)
Title: A windowing technique for blind equalization
Inventor: YANG JIAN
IPC: H03H15/00
Filed: 1997-10-09
Abstract: A blind convergence technique is restricted to using a subset of equalizer output samples. Illustratively, a receiver implements a windowed MMA approach. In this windowed MMA approach, a sample window overlays the two-dimensional plane representing the set of equalizer output samples. Only those equalizer output samples appearing within the sample window are used during filter adaptation.
Patent CA-2218698-A1 (CA)
Inventor: ENGIBAROV EDDY
IPC: B23B31/16
Filed: 1997-02-06
Abstract: A chuck jaw assembly (12) includes a base (14) and a removable jaw (16). A  tongue and groove interconnection (18) is provided between the base (14) and the jaw (16) in the form of a longitudinally tapering dovetail (20, 22). As the tongue (22) is pushed along the groove (20), its sides (34, 36) are tightly wedged within the groove (20). At the same time, the tongue (22) is pulled downwardly into the groove (20) so as to firmly seat the jaw (16) on the base (14).
Patent CA-2219302-A1 (CA)
Title: Process and plant for improved heat efficiency by condensation of vapour in concentrated solutions
Inventor: WICKSTR M PETER
IPC: B01D5/00
Filed: 1996-04-24
Abstract: A process of improving the heat efficiency by condensation of vapour in concentrated chemical solutions, according to which vapour and a concentrated chemical solution are introduced into an absorber comprising a cooler/condenser. In accordance with the invention, the condensate formed in the condensation process is utilised to dilute the concentrated chemical solution in the absorber, and the heat of condensation and the heat of solution generated from the dilution step are recovered by heat exchange thereof with a heat-absorbing medium. A plant for performing the process is described, comprising an absorber (1) and a cooler (condenser) associated therewith, and at least one heat exchanger (3) having an inlet and an outlet for supply and withdrawal of a heat-absorbing medium. The plant has at least one inlet to the absorber (1) for supply of concentrated chemical solution, at least one inlet to the absorber (1) for the supply of vapour, and at least one outlet from the absorber for withdrawal of a diluted chemical solution obtained through condensation of vapour and the chemical solution in the absorber (1).
Patent CA-2221665-A1 (CA)
Title: Method of mutual authentication for secure wireless service provision
Inventor: DALY BRIAN KEVIN
IPC: H04M3/38
Filed: 1997-11-20
Abstract: A mutual authentication process assures that a subscriber does not provide sensitive activation information to an imposter network and a network does not provide sensitive activation information to an imposter subscriber.  The mutual authentication is facilitated by a pair of passwords that are communicated between the activation center of the network and the subscriber via a secure channel.
Patent CA-2222661-A1 (CA)
Title: Implementation of dissolved solids profiling
Inventor: MARCOCCIA BRUNO S
IPC: C08B1/00
Filed: 1994-07-20
Abstract: Digester systems for producing paper pulp from comminuted cellulosic fibrous material take into account the level of dissolved organic materials (DOM), such as lignin, hemi-cellulose, and cellulose, maintaining the DOM level at about 100 g/l throughout the cook (particularly kraft cook). In order to make sure there is sufficient liquid to slurry the material in the feed system of a two vessel system, some liquid is withdrawn from the circulation conduits between the digester and impregnation vessel, cooled, and fed to the feed system. In a vapor phase digester, the level of liquid at the top of the digester is more precisely controlled by circulating some of the withdrawn liquid from a circulatory loop of the digester to the level tank associated with the feed system. An in-line drainer may be provided in the feed system between a make-up liquor pump and a liquid inlet conduit leading to the top of an impregnation vessel. Within the digester, a set of extraction/dilution screens is provided specifically positioned and spaced from each other, and with respect to a reintrodcution conduit opening, so that mixing of different DOM concentration liquids is minimized.
Patent CA-2224238-A1 (CA)
Title: Communication system for superimposing data onto a video signal
Inventor: WRONSKI DANIEL M
IPC: H04N7/16
Filed: 1996-06-14
Abstract: A data communication system transmits a data signal that includes data that may be grouped into one or more packets. The packets may be further grouped into sessions where a session identifier for the session corresponds to the data contained in the session and a receiver can use the session identifier to decide to ignore the corresponding data. The system may include a provision for checking and correcting errors in digital data by partitioning the data into original data portions, applying an error-correction algorithm to provide error-corrected portions corresponding to the original data portions, and rearranging and concatenating the error-corrected portions to provide a string of bits. The communication protocols of the transmitter and receivers may be automatically and dynamically set by constructing a packet of data containing communication protocol parameters, transmitting the packet of data to the receivers, and adjusting communication protocol attributes according to the communication protocol parameters contained in the packet. Each of the receivers may include a board ID which, once assigned, cannot be ascertained and which allows selection of a subset of the receivers to receive the data.  The data signal can be transmitted by being superimposed onto a conventional video signal, such as an NTSC video signal.
Patent CA-2224727-A1 (CA)
Title: Laser drive circuit
Inventor: WALKER STUART DOUGLAS
IPC: H01S5/0683
Filed: 1996-06-20
Abstract: A laser diode (1) is driven by a first, integrating, amplifier (5) receiving a d.c. reference voltage Vref, input data Vin, and negative feedback from a back-facet photodiode (2), and by a second, wideband, amplifier receiving the data and the negative feedback.
Patent CA-2225488-A1 (CA)
Inventor: ANDERSSON HANS
IPC: E06B9/86
Filed: 1996-06-18
Abstract: Roller blind having a closure device (1) arranged in the opened position of the blind to be collected in a cartridge or similar, and in the closed position to be rolled down from the cartridge. The device has an upper edge arranged to be attached to the cartridge. Side edges (4, 5) of the device stretch from the cartridge and terminate with a lower edge (7). Along the side edges and preferably also the lower edge there are arranged a plurality of locking locations, such as holes (6, 8). Along the edges provided with locking locations, there are arranged elongated locking means (10-12) having a plurality of catch members (19) which are arranged to be operated between a free position, with the catch members disengaged from the locking locations, and a locking position with the catch members (19) engaged in the locking locations (6, 8).
Patent CA-2226294-A1 (CA)
Inventor: FISHER-STAMP JOHN THOMAS
IPC: C02F1/72
Filed: 1996-11-28
Abstract: Appareil (10) de purification de liquide adapté pour employer la combinaison des effets purificateurs des métaux lourds que sont l'argent et le cuivre en conjonction avec le peroxyde d'hydrogène et la réaction catalytique de cette substance. Un corps (11, 12) définit un passage (13) d'écoulement doté d'un orifice d'entrée (14) de liquide à une extrémité et d'un orifice de sortie (16) de liquide à l'autre extrémité. Le passage (13) d'écoulement possède une première unité électrolytique (60) contenant au moins une anode (22) à base de cuivre et une seconde unité électrolytique (62) contenant au moins une anode (25) à base d'argent située de manière espacée en aval par rapport à la première unité électrolytique (60). Un circuit électrique (32) fournit du courant de fonctionnement à ces unités et le passage (13) d'écoulement comporte un orifice d'entrée (34) pour l'introduction régulée de H¿2?O¿2? du réservoir (51) dans le passage (13) d'écoulement entre les première (60) et seconde (62) unités électrolytiques.
Patent CA-2226396-A1 (CA)
Title: Method and arrangement for producing a basic element of a multi-element optic cable
Inventor: PAEIVINEN TEUVO
IPC: B29C48/06
Filed: 1996-07-03
Abstract: The invention relates to a method and an arrangement for producing a basic element of a multi-element optic cable, comprising a coating tool (6) for forming a tubular sheathing around a fibre (3) or a fibre bundle formed of several optical fibres (3), and a pulling device (8) placed after the coating tool (6) for pulling forward a unit formed by the sheathing and the fibres. In order to produce a stable product, the tension (t3) of the fibres (3) passed to the coating tool (6) is arranged to be kept continuously at a controlled level. The direction of travel of the fibres and the sheathing is arranged to be kept straight before the pulling device (8), and the pulling device (8) is placed from the coating tool (6) at a distance depending on the production rate of the production line, so that the desired sliding of the fibres (3) inside the sheathing is provided at the pulling device (8).
Patent CA-2226838-A1 (CA)
Inventor: FILOSA MICHAEL P
IPC: G03C8/06
Filed: 1997-05-14
Abstract: There is described a photographic system wherein development of an exposed photosensitive element is carried out in the presence of an acylpyridine-N-oxide compound.
Patent CA-2227130-A1 (CA)
Title: Rollable window screen guide assembly
Inventor: BUHR TERRY J
IPC: E06B9/54
Filed: 1998-01-15
Abstract: A preferred fenestration assembly includes a roll  screen and a guide body presenting channels for receiving the respective side edges of the screen.  During movement of the screen toward the closed position, the side edges are gripped between a shiftable gripper and gripping  surfaces  of  the  guide body.    The  gripping components are configured to release the side edges if excessive force is applied to the screen to prevent damage while retaining the side edges with a minimum level of force to withstand wind loading.
Patent CA-2230117-A1 (CA)
Inventor: LEE HENRY J
IPC: D21F1/00
Filed: 1998-03-26
Abstract: An  open ended papermaker's  fabric  having a  system of transverse yarns interwoven with a system of longitudinal yarns wherein the longitudinal yarns form seam loops and integral edge tiebacks at each end of the fabric.
Patent CA-2232499-A1 (CA)
Title: Benzyloxy-substituted, fused n heterocycles, process for their preparation, and their use as bradykinin reception antagonists
Inventor: HEITSCH HOLGER
IPC: C07D215/26
Filed: 1998-03-18
Abstract: Benzyloxy-substituted, fused N heterocycles, process for their preparation, and their use as bradykinin receptor antagonists The invention relates to compounds of the formula (I) (see fig. I) in which B, D, R1 and R2 have the meaning indicated in the patent claims, processes for their preparation and their use as therapeutics for the treatment and prevention of liver cirrhosis or Alzheimer's disease.
Patent CA-2232722-A1 (CA)
Inventor: SHEAHAN CHRISTOPHER
IPC: H04M3/58
Filed: 1996-09-25
Abstract: La présente invention concerne un équipement de répartition automatique des appels, qui comprend plusieurs opérateurs(trices) récepteurs d'appels, associés à une entité de service, et dont chacun a un accès téléphonique classique au réseau téléphonique commuté public (RTPC). Une unité de commande (18) du centre d'appels reçoit initialement la communication d'un demandeur en provenance du RTPC et destinée à l'entité de service, et choisit l'un des opérateurs(trices) récepteurs d'appels pour traiter la communication du demandeur sur la base de la disponibilité des opérateurs(trices). L'unité de commande du centre d'appels (18) coordonne l'établissement d'un itinéraire de communication direct, pour cet appel, entre le RTPC et l'opérateur(trice) choisi, qui est indépendant de l'unité de commande du centre d'appels (18). En d'autres termes, après qu'elle a établi la liaison d'appel directe, l'unité de commande du centre d'appels n'est pas un élément intermédiaire dans la communication proprement dite entre le demandeur et l'opérateur(trice), et elle n'y participe pas d'une autre manière. Un point important est le fait que l'unité de commande du centre d'appels établisse la liaison directe d'appel entre l'appel qui arrive et un opérateur(trice) de traitement d'appels disponible qui a été choisi, sans qu'un autocommutateur privé (PBX) séparé ou un commutateur de répartition automatique des appels soit nécessaire.
Patent CA-2234594-A1 (CA)
Inventor: HANSEN FREDERICK M
IPC: E04F13/08
Filed: 1998-04-14
Abstract: A method of forming a base formed of a concrete, plaster or like material from aflowable, settable composition and having a decorative surface comprising a first base portion having a first distinctive surface and a second base portion having a second distinctive surface; said method comprising (i)   preparing a surface to receive at least two flowable, settable compositions; (ii)  positioning at least a first template on at least a first portion of said surface at a first desired position; said template having peripheral portions or inner portions defining a first desired shape; (iii) pouring a first flowable, settable composition on at least a first portion of said surface around at least the whole or a part of said peripheral portions or said inner portions; (iv)  effecting setting of said first composition to obtain said first base portion; (v)   removing all or a first portion of said first template to provide a first cavity; (vi)  filling said first cavity with a second flowable, settable composition; and (vii) effecting setting of said second composition to obtain said second base portion. The method provides an easy, cost-effective, reliable way of making a base having a surface bearing a plurality of distinct designs.  Examples of such bases are swimming pool bottoms and sides.
Patent CA-2235610-A1 (CA)
Title: Light weight rust resistant body assembly
Inventor: YOUNG CHARLES E
IPC: B62D33/04
Filed: 1996-11-07
Abstract: A body assembly (20) for attachment to a tow truck chassis (22) includes a left body unit (24) and a right body unit (26). Each body unit has a structural unit (28) and a plurality of exterior panels attached to the structural unit. The structural unit is preferably formed from flanged aluminum panels that are attached using adhesive disposed on the flanges. The exterior panels are preferably formed from molded composite panels. The exterior panels are removably attached to allow for simplified repair.
Patent CA-2236094-A1 (CA)
Inventor: SCHIER JOHANNES
IPC: B64C39/06
Filed: 1996-10-23
Abstract: A torque-balanced aircraft comprises (coaxially-arranged) an annular wing, a central propeller, a drive motor for driving the central propeller, a useful-load container and servo-drive means arranged between the drive motor and the useful load container for displacing the useful-load container relative to the drive motor. The annular wing serves as a torque-balancing means. At least one of the drive motor and the annular wing is rotatable in a direction opposite to a rotational direction of the propeller, and both the drive motor and the annular wing are rotatable relative to the useful-load container.
Patent CA-2237787-A1 (CA)
Inventor: FEISTEL NORBERT
IPC: F16J9/20
Filed: 1996-11-06
Abstract: L'invention concerne un segment de piston (10), notamment pour un compresseur à pistons, constitué d'un premier et d'un second corps (10a, 10b) annulaires avec des points de jonction (10e, 10f). Les segments (10a, 10b) sont disposés de façon concentrique par rapport à l'axe C. Le premier segment (10a) présente une section sensiblement en forme de L, avec une première branche (10h) parallèle à l'axe C et une seconde branche (10g) orientée vers l'extérieur radialement par rapport à l'axe C. La première branche (10h) présente une surface intérieure (10n) et la seconde branche (10g) une surface intérieure (10l), laquelle est inclinée dans le sens radial. De plus, les faces (10m, 10k) du second segment (10b) faisant face au premier segment (10a) sont en contact par liaison de forme avec les surfaces internes (10m, 10l) du premier segment (10a).
Patent CA-2241909-A1 (CA)
Title: Cache coherent network, network adapter and message protocol for scalable shared memory processing systems
Inventor: OLNOWICH HOWARD THOMAS
IPC: G06F12/0813
Filed: 1998-06-29
Abstract: A shared memory parallel processing system interconnected by a multi-stage network combines new system configuration techniques with special-purpose hardware to provide remote memory accesses across the network, while controlling cache coherency efficiently across the network. The system configuration techniques include a systematic method for partitioning and controlling the memory in relation to local versus remote accesses and changeable versus unchangeable data. Most of the special-purpose hardware is implemented in the memory controller and network adapter, which implements three send FIFOs and three receive FIFOs at each node to segregate and handle efficiently invalidate functions, remote stores, and remote accesses requiring cache coherency. The segregation of these three functions into different send and receive FIFOs greatly facilitates the cache coherency function over the network. In addition, the network itself is tailored to provide the best efficiency for remote accesses.