baber/WOPTO huggingface dataset:
Patent CA-2225661-A1 (CA)
Title: Implement swivel hitch for use with a quick-coupler
Inventor: PARSONS STEPHEN KENNETH
IPC: A01B71/06
Filed: 1998-02-09
Abstract: An implement hitch is mounted to the forward end of an implement tongue for swivelling about an upright axis. The hitch includes right- and left-hand arm assemblies which each include separate inner and outer arms mounted for swinging about a horizontal transverse axis defined by a connection pin located in respective rear ends of the arms. A first embodiment of the inner and outer arms includes apertured balls universally mounted in forward ends of the arms, with the balls of each adjacent pair of inner and outer arms having a hitch pin extending therethrough which is adapted for being received in the receptacle of the hook of the corresponding side of a quick-coupler carried by the three-point hitch of a tractor. In a second embodiment, radiused apertures are provided in the forward ends of the inner and outer arms in lieu of the apertured balls. In the first, embodiment, the arms pivot vertically relative to each other and the balls swivel within the arms when the quick-coupler tilts relative to the implement swivel hitch whereby the hitch pins also tilt without generating undue loads on the arms. The operation of the second embodiment is similar to that of the first embodiment, however, in this case the radiused apertures in the arms together with the separate movement of the arms permit the pins to tilt without generating undue loads.
Patent CA-2226514-A1 (CA)
Title: Separation de materiaux melanges de differentes densites
Inventor: KNELSON BENJAMIN V
IPC: B04B11/02
Filed: 1996-07-11
Abstract: L'invention concerne un séparateur centrifuge, destiné à la séparation des métaux lourds d'un minerai plus léger, comprenant un bol (10) pivotant autour de son axe et définissant à sa périphérie des surfaces collectrices annulaires (19, 20) en des points axialement espacés. La paroi périphérique (11) de chaque surface comporte une pluralité d'orifices de déversement (29) disposés de manière angulaire, contrôlés par des robinets-vannes à manchon déformable (42) de façon à permettre le déversement radial périodique du matériau collecté. Les robinets-vannes de la première surface collectrice (19) s'ouvrent et se ferment à un rythme différent de celui des robinets-vannes d'une seconde surface (20), ce qui permet de varier la concentration des matériaux collectés dans les différentes surfaces. Les robinets-vannes sont actionnés par un système à liquide sous pression qui est amené aux différentes surfaces grâce à un dispositif de bascule fixé sur la tige longitudinale soutenant le bol.
Patent CA-2227693-A1 (CA)
Title: Method for removing boron from metallurgical grade silicon and apparatus
Inventor: NAKAMURA NAOMICHI
IPC: C01B33/037
Filed: 1998-01-22
Abstract: Method and apparatus for refining metallurgical grade silicon to carry out deboronization rapidly in production of silicon for solar cells, by blowing a mixed gas of water vapor and inert gas on a surface of molten silicon, and wherein a reducing gas is further applied to the molten metal surface, and including the further step of controlling mix ratios of water vapor and reducing gas, the angle of blowing of the gas, and the deboronization parameters.
Patent CA-2229052-A1 (CA)
Inventor: RASMUSSEN ROBERT F
IPC: B21J9/00
Filed: 1995-08-08
Abstract: Un dispositif de surveillance d'une presse (C) comporte un transducteur linéaire à déplacement variable (B) monté sur le bâti, destiné à acquérir des données de contrainte et d'astreinte dans le carter de la presse (A). Les extrémités supérieure et inférieure (28, 30) d'une tige (26) sont fixées au mécanisme axial de la presse en conformité avec celui du bâti à cet endroit. Un transducteur linéaire à déplacement variable (52) est rattaché à l'extrémité fixée coulissante de la tige (30). Un positionnement relatif de la tige agit sur un flux magnétique engendré par un envoi de courant à une bobine de transducteur (64). Le fonctionnement de la presse signale, de la sorte, du fait des contraintes ou efforts existant dans le carter de la presse (A), les caractéristiques d'un fonctionnement particulier de la presse. Un signal analogique, représentatif de ces caractéristiques, et produit par des variations de flux, est envoyé à un traceur en continu (8) tandis qu'une version numérisée de ce signal est transmise ultérieurement à une unité de commande par microprocesseur (90). Une alarme se déclenche lorsque des valeurs caractéristiques prédéfinies sont dépassées.
Patent CA-2229508-A1 (CA)
Title: Phenol tar desalting method
Inventor: SARGE VLADIMIR I
IPC: C07C39/04
Filed: 1998-02-12
Abstract: A tar desalting process wherein the tar containing salts is mixed with dilute aqueous orthophosphoric acid in either a batch or continuous process, allowed to settle into two phases, an organic phase and an aqueous phase containing most of the salts which is then removed from the organic phase.    The process removes a high percentage of the salts from the tar and reduces fouling and corrosion of downstream equipment
Patent CA-2231259-A1 (CA)
Inventor: LAVOIE RICHARD CHARLES
IPC: B26B29/02
Filed: 1998-03-06
Abstract: A hand held cutting tool for slabbing a paper roll comprises a generally planar base member, a cutting blade extending down from the base member, a movable blade guard, and a handle member extending upward from the central portion of the base member. The handle member is shaped to be gripped in the hand and has a rearward facing boss portion adapted to be received in the palm of the hand and transmit a pushing force. A latch means for releasably securing the blade guard is disposed on the boss portion of said handle and located so as to be actuated by said gripping action.
Patent CA-2233373-A1 (CA)
Title: Method and apparatus for coding and decoding moving image signals
Inventor: MACHIDA YUTAKA
IPC: H04N19/91
Filed: 1998-03-30
Abstract: A decoding method and coding method of moving image signal, and a decoding apparatus and coding apparatus using the same, provides for coding or decoding at least two or more motion vectors, relating to the present processing pixel block, compensating the motion of the coded frame corresponding to each motion vector, generating two or more predicted images relating to the present processing image block, and selecting the predicted image for use in reconstruction of the present processing pixel block depending on presence or absence of decoding error contained in these two or more predicted images. Accordingly, if a decoding error occurs due to bit error in the bit stream, propagation of picture quality deterioration in time can be suppressed, so that excellent decoding of digital moving image signal is realized.
Patent CA-2233382-A1 (CA)
Inventor: SUE JIINJEN A
IPC: E21B10/50
Filed: 1998-03-30
Abstract: A steel tooth particularly suited far use in a rolling cone bit includes a parent metal core having an inner gage facing surface, leading and trailing edges, a root region adjacent to the cone and an outer most edge spaced from the root region. A hardfacing layer that includes at least two hardfacing materials having differing wear characteristics is disposed over the parent metal core in an asymmetric arrangement of regions of the first and second materials. A  first of the hardfacing materials has a higher low stress abrasive wear resistance than that of the second material. The second material has a high stress abrasion resistance that is greater than the first material. The first and second materials are applied in generally contiguous regions over the entire gage facing surface of the parent metal core so as to optimize regions of the tooth for the particular cutting duty experience by that region.
Patent CA-2233463-A1 (CA)
Title: An information encryption method
Inventor: BODIN ROLAND
IPC: H04L9/16
Filed: 1996-09-18
Abstract: The present invention relates to various methods of encrypting an information flow (speech or data) which is to be transmitted in a mobile radio system. The mobile radio system transfers information in accordance with the time division multiple access concept (TDMA) between a network (MSC, BSS) and a specific mobile station (MS) from among a plurality of mobile stations. The proposed encryption methods are used when information (B1, B2) of a given user shall be transferred in two or more time slots (TS1, TS2) within a single frame. In accordance with the inventive encryption methods, the various parameters (Kc, FN, PS) used in the encryption process are modified in dependence on the ordinal number of each of the used time slots in a frame. For instance, the encryption key (Kc) and the frame number (FN) are modified in dependence on the ordinal number (TSn) of the relevant time slot and the known encryption algorithm (A5) is used to obtain a modified encryption sequence (PSm'). This obviates the need to make substantial changes to the system signalling protocols and hardware.
Patent CA-2234478-A1 (CA)
Title: Perfectionnements aux cartes a memoire
Inventor: KOWALSKI JACEK
IPC: G07F7/10
Filed: 1996-10-01
Abstract: La présente invention concerne un procédé, une machine logique et un circuit pour produire un code d'authentification (CA), notamment pour l'authentification des cartes à mémoire. Le procédé de l'invention comprend de façon cyclique les étapes consistant à lire un mot binaire dans une mémoire secrète (21) comportant une pluralité de mots binaires, et combiner des mots lus au cours des cycles précédents. Le résultat de la combinaison est utilisé comme mot générateur (GA) de l'adresse du mot à lire au cycle suivant.
Patent CA-2235453-A1 (CA)
Inventor: GOTTDIENER GARY S
IPC: G09F5/04
Filed: 1998-04-21
Abstract: A  sample  book  binding  system  for  retaining  a plurality of sample sheets includes a plurality of rotatably interlocked sheet holding members arranged in side by side relationship.   The sheet holding members are provided with a plurality  of  linking  segments  which  are  interdigitated  to provide an aligned axial bore for receiving a pintle.   At least  two  adjacent  linking  segments  are  spaced  apart  to provide an opening which captures a deformed section of the pintle for releasably locking the pintle within the linking segment.    The  removal  and  insertion  of  additional  sheet holding  members may  be  accomplished  upon  removal  of  the pintle.
Patent CA-2235941-A1 (CA)
Inventor: LIN SZU-MIN
IPC: A61L2/18
Filed: 1996-10-23
Abstract: An apparatus and process for hydrogen peroxide vapor sterilization of medical instruments and similar devices make use of hydrogen peroxide vapor released from an inorganic hydrogen peroxide complex. The peroxide vapor can be released at room temperature and atmospheric pressure; however, the pressure used can be less than 50 torr and the temperature greater than 86 °C to facilitate the release of hydrogen peroxide vapor. Preferred hydrogen peroxide complexes for use in the invention include Na4P2O7.3H2O2 and KH2PO4.H2O2.  The heating rate can be greater than 5 °C. Optionally, a plasma can be used in conjunction with the vapor.
Patent CA-2237702-A1 (CA)
Title: Improved cementitious composition
Inventor: CAMARA ROBERT M
IPC: C04B28/06
Filed: 1998-05-14
Abstract: A cementitious composition including an admixture and the method of making the same, wherein the admixture comprises aluminum oxide, silicon dioxide and zirconium oxide which, when mixed with water, is capable of setting into a hard mass with accelerated initial and final set time, early compressive strength and an increased average rate of heat evolution.
Patent CA-2238183-A1 (CA)
Inventor: HESS ERNST
IPC: A01N43/90
Filed: 1996-11-29
Abstract: The present invention relates to the use of compounds of formula (I) wherein A is an unsubstituted or mono- to tetrasubstituted, aromatic or non-aromatic, monocyclic or bicyclic heterocyclic radical, where one to two of the substituents of A can be selected from the group consisting of halo-C1-C3alkyl, cyclopropyl, halocyclopropyl, C2-C3alkenyl, C2-C3alkynyl, halo-C2-C3alkenyl, halo-C2-C3alkynyl, halo-C1-C3alkoxy, C1-C3alkylthio, halo-C1-C3alkylthio, allyloxy, propargyloxy, allylthio, propargylthio, haloallyloxy, haloallylthio, cyano and nitro, and one to four of the substituents of A can be selected from the group consisting of C1-C3alkyl, C1-C3alkoxy and halogen; R is hydrogen, C1-C6alkyl, phenyl-C1-C4alkyl, C3-C6cycloalkyl, C2-C6alkenyl or C2-C6alkynyl; and X is N-NO2 or N-CN, in the free form or in salt form or, if appropriate, tautomers thereof, in the free form or in salt form, for controlling fish parasites, in particular sea lice.
Patent CA-2238195-A1 (CA)
Inventor: IKONEN PASI
IPC: G01N35/00
Filed: 1996-11-21
Abstract: The subject of this invention is a specimen identifier, which consists of a base section (1), which allows the specimen identifier to be placed on a flat surface, an identifier memory unit (2) for identifying the specimen, which fits conveniently into the base section, and a mounting section (3) for mounting the test tube (4) in the specimen identifier. According to the invention, the specimen identifier includes a middle section (5) between the base section (1) and the mounting section (3), and mounting grips (3) forming the mounting section positioned a short distance from the base section (1) which expand to the sides, are curve-shaped and manufactured from a flexible material, and whose arms are a distance apart from each other and between which the test tube can be mounted.
Patent CA-2238987-A1 (CA)
Title: Wave dampener for floating structures
Inventor: OLSEN FRED
IPC: E02B3/06
Filed: 1996-11-26
Abstract: A dampening device for dampening the vertical wave-induced motion component of a floating structure. A dampener may project as a skirt down below the bottom of the floating structure and includes of a plurality of channels extending substantially horizontally and converge from an inlet to an outlet leading away from the floating structure. When the structure moves downwards water is forced from the underside through the channels and creates a jet effect which acts with dampening effect on the vertical motion of the structure. The dampening device may also be made in the form of an outwardly projecting skirt on the floating structure and consist of a plurality of channels, where a number of first passages extend in a substantially vertical direction and merge into a number of second passages which extend in an at least substantially horizontal direction.
Patent CA-2241544-A1 (CA)
Title: Method and device for recording a refractive index pattern in an optical medium
Inventor: KASHYAP RAMAN
IPC: G02B6/10
Filed: 1997-01-16
Abstract: A device for recording a refractive index pattern in a photosensitive optical fibre consists of a rotary disc (3) formed with a phase mask in a circular pattern, which is rotated by an axis (11). The phase mask is illuminated with laser light in region (5) so that a moving interference pattern is formed. The optical fibre (1) is moved along a path in synchronism with the moving interference pattern so that the pattern becomes recorded in the fibre. The pattern can be formed continuously over long fibre lengths e.g. of the order of one metre.
Patent CA-2242164-A1 (CA)
Inventor: KIMURA YASUYUKI
IPC: G11B19/04
Filed: 1997-11-10
Abstract: A data recording method and device for an optical memory card which is adapted to prevent a recording error due to step-out during a data recording operation, and minimize a decrease in the recording capacity of an optical memory card.      While data are recorded, an output from an SYNC mark detection circuit (2) and an output from an internal synchronization signal generation circuit (3) are compared with each other in a comparator circuit (4). When step-out occurs, a write signal generation circuit (5) is stopped and the data recording operation is interrupted, and a re-recording operation is started at a frame adjacent to the frame in which a recording error occurred, on the basis of the value in a write cycle counter, whereby a decrease in the recording capacity of the optical memory card is minimized.
Patent CA-2243064-A1 (CA)
Title: Lighting fixture display
Inventor: PORTNER JOEL I
IPC: A47F7/30
Filed: 1998-08-28
Abstract: A display is provided for a plurality of electrical fixtures, such as lighting fixtures. The display includes a slat board type mounting panel having a plurality of elongated generally horizontal grooves in the front surface thereof. A plurality of mounting plates are provided having flanges that are adapted to be retained within the grooves of the slat board for removably supporting the mounting plates on the front surface of the panel. An electrical wire is secured to the plates. A male plug attached to one end of the wire. A retainer is provided on opposite sides of the mounting panel to support the panel. The retainer has a U shaped channel therein. A series of electrical receptacles are mounted within the channel. The plug may be inserted into the receptacles for providing electrical power to the mounting plates. The retainer includes an opening therein that mates with the grooves of the slat board. The electrical wire extends along the grooves to the side edges of the panel and then inserted into the receptacle within the retainer. The retainer serves to support the mounting panel as well as retain the electrical connections for the display.
Patent CA-2243867-A1 (CA)
Title: Head and head assembly for a string trimmer
Inventor: YATES JAN B
IPC: A01D34/416
Filed: 1998-07-22
Abstract: A string trimmer head and head assembly include a plurality of arms which connect the head to a hub member.      One or more flails are captured between the head and the hub member and extend outwardly into a cutting plane.
Patent CA-2244171-A1 (CA)
Inventor: VERDONSCHOT WILHELMUS HENRICUS
IPC: F16H61/36
Filed: 1997-01-14
Abstract: A gearbox is provided with a selector shaft (16), which is capable of reciprocating movement for selecting the selector slot and rotating movement for changing gears. A gear lever (1) is connected to a first constructional member (2), provided with a first (7) and a second (8) coupling point, which are positioned on one side of a first axis (6) and on either side of a second axis (5), and a third coupling point (9), positioned on the second axis (5). The selector shaft (16) is provided with a second constructional member (15), with two coupling points (12, 13) positioned on either side of an axis of rotation, and a further coupling point (21). The coupling points (8, 9) on the first constructional member (2) and the coupling points (12, 13) on the second constructional member (15) are interconnected and the third coupling point (9) is connected to the further coupling (21). The connections are made up of power transmission means (10, 11, 22) which can only transmit forces exerted in one direction. This reduces play and results in a lighter, more compact selector mechanism.
Patent CA-2246091-A1 (CA)
Inventor: HJELM RICHARD C S
IPC: A01B1/08
Filed: 1998-09-14
Abstract: In this invention the tool embodies a flat surfaced plate whose perimeter bristles with hardened, sharpened cutting edges. The tool, because of the central, point-of balance placement of a handle stem designed to accept a variety of handle types and lengths, lies horizontally flush with the garden soil surface. Garden cultivation, ie., sowing and unwanted vegetation control may be accomplished without lifting, chopping or excessive bending or stooping. Weed control close to or even within the rows of cultured vegetation is aided by the inclusion of strategically placed hooking/pulling notches within the perimeter of the tool's hardened and sharpened cutting edges. The design and embodiment of the invention herein described allows even physically infirm persons to garden with relative ease.
Patent CA-2250105-A1 (CA)
Inventor: THOMAS NICHOLAS
IPC: C12Q1/68
Filed: 1997-04-03
Abstract: A high volume substrate-based in-situ hybridization assay has been developed, utilizing scintillant containing microplates. The technique has the sensitivity to reliably detect specific mRNA transcripts at the level of 10-20 copies per cell. High specific activity antisense riboprobes specific for c-fos and glyceraldehyde-3-phosphate dehydrogenase (GAPDH), as well as a non-homologous vector derived control probe were used to compare mRNA levels in quiesced rat A-10 smooth muscle cells after stimulation with fetal calf serum (FCS) or platelet-derived growth factor (PDGF). Maximal c-fos induction was shown to occur following stimulation of with 30 ng/ml of PDGF or 10 % FCS, corresponding to a signal from the c-fos probe of 700 cpm. The non-homologous control background of 50 cpm and the GAPDH signals of 1700 cpm were independent of stimulation with PDGF or serum. Using PDGF, at 30 ng/ml, quiesced cells were stimulated at various times to provide an induction time-course for c-fos mRNA which peaked at 30 minutes and decreased to less than 50 % of this by 3 hours; a return to background level expression was apparent after 6 hours. Comparison with parallel northern blotting experiment showed this in-situ assay to be at least a 20-fold more sensitive and much more rapid to perform.
Patent CA-2251195-A1 (CA)
Inventor: ROVTAR STEVEN R
IPC: B60Q1/18
Filed: 1998-10-22
Abstract: An auxiliary driving lamp assembly is mounted at the center of the front bumper of a motorized vehicle.  The lamp assembly includes a lamp unit that produces light and a lens positioned to produce a beam of light from the light of the lamp unit and direct the beam to a position in front of the vehicle to provide illumination for use by a driver of the vehicle.  The assembly may include a license plate holder that is integrally formed with the assembly.
Patent CA-2254719-A1 (CA)
Inventor: BILLAN JEAN-FRANCOIS
IPC: A47H13/14
Filed: 1997-05-07
Abstract: A device for supporting a curtain including a hollow rail which includes a length, a narrowed opening, and an upper attachment surface for attaching the rail to a horizontal support surface. A helically wound spring is disposed inside the hollow rail and includes a plurality of turns, a fixed end, and a moveable end. A plurality of curtain holding members are disposed on the plurality of turns wherein the plurality of holding members can move within the narrowed opening. The hollow rail is attachable via the upper attachment surface to the horizontal support surface so as to support a curtain along the length of the hollow rail.
Patent CA-2254879-A1 (CA)
Inventor: HEILMANN CHRISTIAN
IPC: G06F17/00
Filed: 1997-05-15
Abstract: To process a signal (s(t)), particularly to recognize discontinuity, an orthogonal imaginary signal (s(t)) is first formed based on signal ((s)t). Then, a transformational step follows upon which a differentiation step follows. Processed in this way, the signal (s(t)) shows the discontinuity especially clearly, so that it can be selected and detected. Preferred applications of this process and the devices which operate according to it are telecommunications technology and signal processing in grids, especially in low, high, and medium tension technology.
Patent CA-2255304-A1 (CA)
Inventor: NIEMI WALTER
IPC: B01F29/63
Filed: 1998-12-08
Abstract: A drying and mixing plant for particulate material is provided comprising an inner drum, a middle drum and an outer drum.      The drums are attached concentrically to form a substantially horizontal drum assembly with a first annular chamber between the inner and middle drums and a second annular chamber between the middle and outer drums, and are located such that a first particulate material discharged from the output end of the inner drum is received at a mid-point of the middle drum and is then carried to the output end of the middle drum and received by the input end of the outer drum and then carried through the second annular chamber to the output end of the outer drum and discharged from the drum assembly through a material outlet. Sources of hot air and injectors for asphalt or the like are also included.