baber/WOPTO huggingface dataset:
Patent CA-2280674-A1 (CA)
Title: Improved inline solid state polymerization of pet flakes for manufacturing plastic strap by removing non-crystalline materials from recycled pet
Inventor: VADNAIS GARY L
IPC: C08J5/18
Filed: 1999-08-25
Abstract: A process for preparing a PET flake mixture for use in connection with the fabrication of high-performance plastic strapping comprises the steps of initially collecting post-consumer and non-post-consumer PET materials having an initially wide range of relatively low intrinsic viscosity (IV) values with a relatively low average intrinsic viscosity (IV) value, and processing the same through solid state polymerization (SSP) so as to obtain a wide range of relatively high intrinsic viscosity (IV) values with a relatively high average intrinsic viscosity (IV) value. The initially collected materials are chopped into flakes and chunks, and the chunks are removed by a suitable destoner so as to render the remaining mixture comprised substantially entirely of flake materials or segments. This is advantageous because the flake segments, as opposed to the chunk segments, are able to be substantially increased in intrinsic viscosity (IV) values and within a relatively short period of time, and in addition, the flake segments are essentially crystalline while the chunk segments are essentially non-crystalline which would otherwise undergo rapid crystallization and generate a substantial amount of heat of crystallization. Such heat of crystallization undesirably raises the temperature of the polymerization process whereby the materials tend to become sticky and agglomerate thereby impeding the flow of the materials being processed as well as tending to clog components of the processing apparatus.
Patent CA-2280966-A1 (CA)
Inventor: DAMIEN CHRISTOPHER J
IPC: A61F2/28
Filed: 1998-02-12
Abstract: L'invention concerne des compositions pour matériau implantable de type mastic, qui permet d'administrer de certains composés actifs à un patient. Plus précisément, l'invention concerne un matériau dont le pH est compris entre environ 3 et 6 et qui possède les propriétés physiques caractéristiques d'un matériau de type mastic, sachant que ledit matériau renferme du collagène et de l'eau. L'invention concerne également un procédé relatif à l'utilisation de ce matériau implantable de type mastic.
Patent CA-2281736-A1 (CA)
Title: Toothbrush having flexible link regions
Inventor: KRAMER HANS
IPC: A46B5/00
Filed: 1998-02-17
Abstract: A toothbrush in which the head comprises a substantially rigid base region adjoining the toothbrush neck and extending from the base end of the head to a resilient flexible link situated between the base end and the tip end, and a tip region extending from the tip end of the head to the link region, both the base region andtip region being bristle bearing, the tip region being flexibly and resiliently linked at the link region to the base region, and between the base end of the head and the neck there is a resilient flexible link.
Patent CA-2284951-A1 (CA)
Title: Method and apparatus for printing on a continuously moving sheet of work material
Inventor: STEIN DARRYL COLBURN
IPC: B41J19/14
Filed: 1999-10-04
Abstract: In an apparatus (10, 110, 210, 310) for printing on a continuously moving sheet of work material (15, 115, 215, 315), a frame (12, 112) is provided and defines a work supporting surface (14, 114, 214) over which a sheet of work material is advanced in a first coordinate direction longitudinally of itself.  An elongated support (16, 116, 216, 316) is mounted to the frame (12, 11.2) and extends transversely across the work supporting surface (14, 114, 214). A print head (28, 128, 228, 328) is mounted to the elongated support (16, 116, 216, 316) and is movable across the support, as well as between a forward and rearward position.     During operation, as the work material (15, 115, 215, 315) is continuously advanced through the apparatus (10, 110, 210, 310), the print head (28, 128, 228, 328) traverses the support (16, 116, 216, 316) and simultaneously moves between the forward and rearward positions, such that the print head has a component of speed in the first coordinate direction approximately equal to the rate at which the work material is advanced. This causes the print head (28, 128, 228, 328) to print successive lineal portions of a graphic oriented approximately perpendicular to the first coordinate direction while the work material (15, 115, 215, 315) is continuously advanced.
Patent CA-2288359-A1 (CA)
Title: Substrate for use of ink jet head, ink jet head, ink jet cartridge, and ink jet recording apparatus
Inventor: INOUE RYOJI
IPC: B41J2/175
Filed: 1999-11-02
Abstract: A substrate for use of an ink jet head that constitutes an ink jet head comprises a plurality of discharge ports for discharging liquid, a plurality of liquid flow paths communicated with the plurality of discharge ports, and first and second heat generating means arranged serially in the liquid flow paths in the flow path direction of the liquid flow paths for generating thermal energy which is utilized for discharging liquid in the liquid flow paths from the discharge ports, the first and second heat generating means being formed on the substrate. For this substrate, the first and second heat generating means are driven at driving frequencies of 4 kHz or more, and the first heat generating means are arranged in parallel in the direction perpendicular to the flow path direction of the liquid flow paths, and at the same time, structured with a plurality of heat generating resistive members electrically connected in series, and the second heat generating means is structured with at least one heat generating resistive member. With the structure thus arranged, this substrate makes it possible not only to stabilize liquid discharges even for the execution of a multi-valued recording, but also, provide the heat generating resistive members and liquid flow paths in higher densities.
Patent CA-2289208-A1 (CA)
Title: Method and apparatus for linear transmission by direct inverse modeling
Inventor: CHEN JAY J-C
IPC: H03F1/32
Filed: 1998-04-30
Abstract: A system for linearly transmitting an amplified output signal using predistortion whereby a straight/direct inverse modeling scheme (503) is used to determined the inverse of the distortion caused by a power amplifier (103).  The predistorter system (407) stores complex coefficients in a LUT (603), which are then used as tap weights of a digital filter (601) implementing the predistorter. The predistortion is done by a non-linear filter (601) which incorporates both instantaneous and average envelope power or magnitude effects thereby compensating for modulation envelope memory effects of the power amplifier (103). The LUT (603) is addressed as a function of the instantaneous power or magnitude of the current sample and a profile of the power or magnitude envelope of previous samples. The LUT (603) is updated with values that are indexed as a function of the powers or magnitudes of past samples and the power or magnitude of the current sample.
Patent CA-2290213-A1 (CA)
Title: Piperazinone derivatives
Inventor: ZAGNONI GRAZIANO
IPC: G03C7/392
Filed: 1999-11-22
Abstract: A compound of the formula (I)   wherein n is preferably 3;     G1, G2, G3 and G4 are independently of one another e.g. C1-C4alkyl;      A1 is e.g. hydrogen or methyl;      A2 is e.g. methylene;      A3' and A3" are e.g. C1-C4;alkyl;      A4 is e.g. C1-C8alkyl;      Y is e.g. a group of the formula (IV)   wherein R1 is e.g. hydrogen or methyl, R2 is e.g. methylene, R3' and R3" are e.g. C1-C4alkyl and R4 is e.g. hydrogen or C1-8alkyl; and Z is e.g. a group of the formula (VI)   with A10' and A10" being independently of one another e.g. hydrogen or C1-C4alkyl and A11' and A11" being independently of one another e.g. C2-C6alkylene, is useful for stabilizing an organic material against degradation induced by light, heat or oxidation.
Patent CA-2292535-A1 (CA)
Title: Method and apparatus for improving classroom amplification systems and other rf-type amplification systems
Inventor: FRANKLIN DAVID
IPC: H04H20/76
Filed: 1998-06-02
Abstract: An RF-type amplification system, such as a classroom amplification system, employs technology adapted from a cordless telephone system to overcome interference. The amplification system includes a portable remote unit (87) and a base unit (82). Remote unit (87) includes: a microphone (151) for detecting a voice and generating corresponding voice signals; a transmitter (160, 161) which generates RF signals containing the voice signals as well as control signals provided by the central processing unit (179) of remote unit (87), and an antenna (168) for transmitting the RF signals and for receiving RF signals from base unit (82). Base unit (82) includes an antenna (107) which receives the RF signals transmitted by the remote unit and a receiver (108, 114, 115, 117) which detects the RF signals and separates the RF signals into the voice signals and control signals. The control signals are identified by a code detector (118) of base unit (82) and evaluated by a CPU (130). If the values of the control signals are as expected, the voice signals are processed through a speech network (121) and provided at a communications interface to an audio power amplifier (147) which amplifies the voice signals and supplies the voice signals to speakers which audibly project the voice signals as sound. Base unit (82) further includes a transmitter (133, 135) for generating RF signals containing control signals but no voice signals, that are transmitted to remote unit (87), thereby effecting one-way transmission of voice signals and two-way transmission of control signals between remote unit (87) and base unit (82).
Patent CA-2295104-A1 (CA)
Inventor: KELLIHER JOHN C
IPC: B29C33/36
Filed: 1997-12-09
Abstract: A method is disclosed for manufacturing a plurality of laminae for use in a mold suitable for use in forming retroreflective cube corner articles. Each lamina has opposing first and second major surfaces defining therebetween a first reference plane. Each lamina further includes a working surface connecting the first and second major surfaces. The working surface defines a second reference plane substantially parallel to the working surface and perpendicular to the first reference plane and a third reference plane perpendicular to the first reference plane and the second reference plane. The method includes orienting a plurality of laminae to have their respective first reference planes parallel to each other and disposed at a first angle relative to a fixed reference axis. At least two groove sets are formed in the working surface. Each groove set includes at least two parallel adjacent Vshaped grooves in the working surface of the laminae. The at least two groove sets form first, second and third groove surfaces that intersect substantially orthogonally to form a plurality of cube corner elements. Each of the plurality of cube corner elements is preferably located on essentially one of the plurality of lamina. The plurality of laminae can be oriented at a second angle relative to the fixed reference axis prior to forming at least one of the groove sets. A mold according to the present invention and a retroreflective article made therefrom are also disclosed.
Patent CA-2295716-A1 (CA)
Title: Ensemble d'elements de construction pour meubles
Inventor: FISCHER LUKAS
IPC: F16B12/40
Filed: 1998-07-06
Abstract: Selon l'invention, pour le montage de meubles, par exemple d'étagères, des profilés de support creux (1, 2, 3) de section transversale rectangulaire sont assemblés au moyen d'armatures angulaires (4), en forme de L, pouvant être introduites dans les extrémités de profilé, et au moyen de tenons (5) pour former des cadres (19, 21), et sont montés au moyen des mêmes profilés (3) sous forme de montants pour former des meubles cubiques. De préférence, d'autres profilés de cadre (23) comportant quatre compartiments sont utilisés sous forme d'arêtes de tablettes (22). Ces profilés de cadre (23) présentent, pour chaque compartiment, une fente (36, 37, 38, 39) dans laquelle peuvent être maintenus de façon facilement coulissante, des éléments de porte coulissante (33, 34) de différentes épaisseurs au moyen d'un profilé élastique (35). Ces profilés élastiques (35) présentent de préférence des rainures (36, 37, 38, 39) de différentes largeurs, servant à recevoir les éléments de porte coulissante (33, 34).
Patent CA-2296785-A1 (CA)
Title: Measurement of hot container wall thickness
Inventor: JUVINALL JOHN W
IPC: G01B11/00
Filed: 2000-01-21
Abstract: A method and apparatus of measuring wall thickness of hollow glass articles, such as molded glass containers having interior and exterior wall surfaces, includes the steps of measuring intensity of radiation emitted by the article at a first wavelength at which intensity varies as a function of both temperature at the surfaces and wall thickness between the surfaces, and at a second wavelength at which intensity varies as a function of temperature at the surface substantially independent of wall thickness between the surfaces. Since the first intensity measurement is a function of both wall thickness and temperature, while the second intensity measurement is a function solely of surface temperature, wall thickness between the surfaces can determined as a combined function of the first and second intensity measurements.
Patent CA-2297002-A1 (CA)
Inventor: ST-LOUIS JEAN-PIERRE
IPC: A61L2/22
Filed: 2000-01-26
Abstract: A liquid flash-dry aerosol disinfectant composition comprising a flash vaporisation component and an effective amount of an antimicrobial agent, said flash vaporisation component being able, once the flash-dry disinfectant composition is sprayed in aerosol form onto a surface, to flash vaporise so as to leave an essentially dry surface having antimicrobial agent deposited thereon.
Patent CA-2297075-A1 (CA)
Title: An electrosurgical instrument
Inventor: GOBLE COLIN CHARLES OWEN
IPC: A61B18/14
Filed: 1998-07-15
Abstract: An electrosurgical instrument is provided for the treatment of tissue in the presence of an electrically-conductive fluid medium. The instrument comprises an instrument shaft (10), a tissue treatment electrode (12) at one end of the shaft, and removal means, the instrument having an apertured portion (20a) through which matter can be aspirated by the removal means from the region surrounding the tissue treatment electrode. The removal means comprises a channel formed within the instrument shaft (10) and leading from the apertured portion (20a). The channel is provided with agitation means (14) for preventing the build-up of sublimation products within the channel.
Patent CA-2297881-A1 (CA)
Inventor: JOHNSON STEPHEN D
IPC: B62D9/00
Filed: 2000-02-03
Abstract: A system is provided for use on a vehicle (10) which allows the relative angle of turn between a first steerable wheel (20) and a second steerable wheel (22) to be established by use of a tie rod assembly (32) which is variable in length. The tie rod assembly (32) includes a hydraulic cylinder assembly to vary the length by introducing or removing pressurized hydraulic fluid. A spring (120) is provided to establish a predetermined length to the tie rod assembly should the hydraulic system fail. The length of the tie rod assembly is controlled by an electronic control (166) which is provided with data from angle sensors (160,162) at each of these steerable wheels. The electronic control can be provided with an electronic table of relative angles for the wheel members and can adjust the length of the tie rod appropriately.  The device allows for establishing the desired relationship between the wheel members at any turn angle. Further, the system can provide continuously accurate Ackerman steering angles between the wheels for all conditions of vehicle operation, including vehicle wheel base, vehicle track, axle weight and vehicle speed.
Patent CA-2299160-A1 (CA)
Title: Electric water heater with simplified phase conversion apparatus
Inventor: POWELL TIMOTHY E
IPC: F24H9/18
Filed: 2000-02-23
Abstract: An electric water heater is provided with simplified phase conversion apparatus including a terminal structure having replaceable line lug portions which are wired to a single phase row of multi-pin connector sockets by single phase routing circuitry, and to a three phase row of multi-pin connector sockets by three phase routing circuitry. Electrical supply wires from sets of fuse holders connected to multiple thermostat/heating element sets are grouped and connected to associated multi-pin connector plugs. To ready the water heater for single phase operation, the plugs are connected to the single phase row of sockets, and to convert the water heater to three phase operation the plugs are simply disconnected from the single phase sockets and connected to the three phase sockets. In this manner the necessity of individually repositioning all of the fuse holder wires on the terminal structure to change from single to three phase operation, or vice versa, is eliminated.
Patent CA-2304101-A1 (CA)
Inventor: BUCAR WOLFGANG
IPC: C09K3/14
Filed: 1998-08-20
Abstract: L'invention concerne un alliage dur obtenu par un procédé de fusion, à base de carbure de titane et comportant des carbures, nitrures ou borures des sous-groupes IVb, Vb et VIb de la classification périodique des éléments. La teneur en carbure de titane est comprise entre 10 et 99,9 mole % et la teneur en carbures, nitrures ou borures se situe entre 0,1 et 90 mole %. L'invention précise également d'autres constituants possibles de l'alliage et concerne en outre des procédés de production appropriés ainsi que des modes d'utilisation.
Patent CA-2304384-A1 (CA)
Inventor: GORODETSKY RAPHAEL
IPC: A61K35/12
Filed: 1998-09-15
Abstract: L'invention concerne des microbilles de fibrine biologiquement actives à base de fibrine (fibrinogène) dont la réticulation est étendue. L'invention concerne aussi un procédé relatif à l'élaboration desdites microbilles. L'invention concerne en outre une composition renfermant des cellules liées aux microbilles en question, ainsi que des procédés permettant la culture et la séparation des cellules au moyen de ces microbilles. Enfin, l'invention concerne des procédés permettant la transplantation de cellules et les opérations de génie tissulaire, au moyen des microbilles considérées.
Patent CA-2306374-A1 (CA)
Inventor: VIKMAN VESA
IPC: D21C9/10
Filed: 1997-10-14
Abstract: The present invention relates to a method and apparatus for heating pulps, in which method low-pressure steam is supplied into the pulp flowing as a plug flow in such a way that in the flowing direction of the pulp, before supplying the low-pressure steam, the pulp is pressurized in such a way that the pulp pressure at the point of the supply of steam is lower than the pressure of the available steam, and that after the supply of steam the pulp is mixed by means of a pressure-raising mixing means either to divide the steam evenly into the pulp and/or equalizing the temperature of the pulp.
Patent CA-2306873-A1 (CA)
Title: Clutch
Inventor: JUPPI EERO ANTERO
IPC: F16D43/21
Filed: 1998-10-23
Abstract: The invention concerns a clutch, comprising a clutch disk connected with a first shaft (A) and a brake device connected with a second shaft (B). By means of the brake cylinder of the brake device, the brake pad can be coupled into engagement with the clutch disk, in which case a movement of rotation between the shafts (A and B) is prevented. In the solution of equipment, between the shaft (A) and the shaft (B), there is a support bearing, which supports the movement of rotation between the shafts (A and B) when the clutch is supposed to slip. According to the invention, in the pressure line, there is a holding pressure maintained by means of accumulators, which holding pressure determines the torque at which the clutch slips.
Patent CA-2306972-A1 (CA)
Title: Particles
Inventor: CLARKE DAVID JOHN
IPC: G01N33/569
Filed: 1998-10-14
Abstract: Lipid vesicle particles capable of being targeted to a cell type of interest, said particle incorporating a peptide which is responsive to a predetermined metabolic signal from the targeted cell so as to modulate the permeability of the particle, said particle further incorporating a species to be targeted to the cell which is activated on said modulation of permeability. The particles may be used in methods for detecting cells, methods of treating cells and also therapeutically.
Patent CA-2309706-A1 (CA)
Title: Radial piston hydraulic motor
Inventor: LEINONEN MAUNO
IPC: F01B1/06
Filed: 1998-11-09
Abstract: The invention concerns a radial-piston hydraulic motor (10), which comprises one or several cylinder groups (1) placed in a stationary position, which cylinder groups contain piston mechanisms (16a1, 16a2,; 17a1, 17a2...) moving radially back and forth. The piston mechanisms (l6a1, 16a2; 17a1, 17a2...) comprise a piston (16a1, 16a2) and a press wheel (17a1, 17a2...). A hydraulic fluid is passed into the cylinder spaces (p1, p2...) of the piston mechanisms so that the press wheels (17a1, 17a2...) of the pistons (16a1, 16a2...) that are at a power stage are pressed with force against the wave-shaped face (12a) of the cam ring (12) and bring the cam ring (12) into a revolving movement. The cam ring (12) is connected with a box frame (11) and the box frame (11) with a distributor valve (13), which controls the pressurized fluid flow at the correct time into the cylinder spaces (p1, p2...) of the pistons (16a,, 16a2...) that are at the power stage, and that, at the same time, the distributor valve (13) connects the cylinder spaces (p1, p2) of the pistons (16a1, 16a2...) that start their return movement to a lower pressure. In the equipment, the sense of rotation of the motor can be reversed by reversing the direction of flow of the fluid through the distributor valve (13). The fluid is passed to the distributor valve (13) through the sets of ducts (e1, e2) in the shaft (14) which is placed in a stationary position together with the cylinder frame(s) (15) of one or several cylinder groups (1). In the distributor (13) in accordance with the invention, there is a duct (31), which communicates with the power pressure and which is opened on the side face (13a) of the distributor (13). In this connection the force is applied, through the fluid at the power pressure, to the side face (13a) of the distributor (13).
Patent CA-2311278-A1 (CA)
Inventor: KARAZIVAN NAIM
IPC: A61C5/85
Filed: 2000-06-09
Abstract: The invention concerns a device for applying a sealant (S) on an interproximal surface of a tooth (DT) comprising a closed surface (SF), positioning means (AL) for positioning the closed surface (SF) against an interproximal surface of the tooth (DT) to be treated, a sealing agent (AS) designed to be generally positioned between the closed surface (SF) and the interproximal surface and to adhere to the interproximal surface, and maintaining means (F, PMT2, C, EO) for maintaining the closed surface (SF) in position against the interproximal surface while the sealing agent (AS) is cured. The sealing agent (AS), when cured, constitutes at least part of the sealant (S) applied on the interproximal surface. The closed surface (SF) is flexible and designed to match at its periphery the interproximal surface so that the sealing agent (AS), when cured, substantially merges without interruption with the general surface of the tooth (DT), the general surface comprising the interproximal surface. The closed surface (SF) is designed to define, when pressed against the interproximal surface, a cavity (FC) designed to receive at least the sealing agent (AS).