baber/WOPTO huggingface dataset:
Patent CA-2229531-A1 (CA)
Title: Rapid prototyping method
Inventor: THOMAS CHARLES L
IPC: B29C67/00
Filed: 1996-08-21
Abstract: A rapid prototype modeling system operates to first electronically decompose a discrete part represented by a stereolithography file into thick layers (36), which are then electronically sliced into cross-sectional slices (39) the thickness of a sheet (38) of construction material. The slices (39) are cut from sheets (38) of the construction material in a pattern which permits construction of the layers (36) by stacking the sheets (38). The layers (36) are then stacked appropriately to create a physical model of the discrete part.
Patent CA-2229716-A1 (CA)
Inventor: ALLEN ROBERT DAVID
IPC: B64G1/40
Filed: 1998-02-16
Abstract: A spacecraft (10) has combined propulsion and active thermal control systems. A propellant storage tank (20) couples to a pressurant storage tank (18). A working fluid (52) resides in the pressurant storage tank (18) and propels propellant when needed while concurrently acting as a thermal working fluid. The working fluid (52) is expanded then routed to selected cooled components (64). After passing by the cooled components (64), the working fluid (52) is compressed and passed by selected heated components (82). A controller (36) monitors temperature sensors (88) and controls valve assemblies (60, 78) to determine the components (64, 82) to which the working fluid (52) is routed.
Patent CA-2231344-A1 (CA)
Title: Automatic bag-dispenser
Inventor: VARICHON FREDERIC
IPC: A47F9/04
Filed: 1996-09-16
Abstract: The invention concerns an automatic bag-dispenser which comprises a supply of bags (30) arranged flat in a stack (3), and two rotary devices (1, 2) which have parallel axes, are located adjacent each other and are covered with a non-slip material. The rotary devices (1, 2) rotate in counter-rotation at linear speeds which differ at their periphery. At least one of the rotary devices (1, 2) can come into contact with one of the two end bags (30) in the stack (3) in the region of the bottom (32) of the bag (30) such that it can be driven between the rotary devices (1, 2). At least one of the rotary devices (1, 2) comprises a central part which is not rotated and opposite which devices (4) for gripping the centre part of the bag (30) are active.
Patent CA-2233081-A1 (CA)
Inventor: SCALES BERT F
IPC: E21B7/06
Filed: 1996-09-25
Abstract: The present invention is directed to a method for the entry of a tool from a cased wellbore (11) into a lined and sealed completed lateral (12) which includes the steps of measuring the distance from at least one apex (36) of the ellipse formed by the intersection of the completed lateral and the wellbore to a fixed point in the wellbore and aligning a re-entry device (70) from the fixed point to allow the tool to enter the lateral from the cased wellbore. The fixed point in the wellbore may be a keyway (40) in a joint of the casing or the keyway (48) in a packer (54) positioned in the wellbore. The invention further includes the apparatus for measuring the distance from the fixed point which includes an inflatable packer (42) with an outside memory-retention surface and a tail joint (46) having a guide key which seats in the key slot.
Patent CA-2234575-A1 (CA)
Title: Security container
Inventor: HITCHINGS GLENN EDWARD
IPC: G11B23/023
Filed: 1996-10-10
Abstract: A container (1) includes a receptacle portion (3) and a lid (2) butt ends thereof being hingeably connected one to the other; one or more resiliently mounted teeth (4) are formed which extend upwardly from a forward end of the receptacle portion (3), and which include a body portion with a recess (5) extending therethrough; a plurality of laterally spaced apart protrusions (6) are provided and extend inwardly from a forward end of the lid (2), such that on the lid being hinged over the receptacle portion, the protrusions contact and move over the resiliently mounted teeth (4) so as to releasably engage within the recesses and so as to releasably lock the receptacle portion (3) and lid (2) together. Recess means (10) are provided and extend through an upper surface of the lid (2), adjacent a front face thereof, so as to allow for the insertion of release means (11) therethrough and between said one or more teeth (4) and a forward end of said lid (2) and into contact with a movable release bar (9) which acts to deflect the teeth (4) away from the front face of the lid, so as to allow for disengagement between said one or more teeth (4) and said one or more protrusions (6) and subsequent release of said lid (2) from said receptable portion (3).
Patent CA-2235852-A1 (CA)
Title: Gas/vapor delivery from solid materials
Inventor: HAHS MICHEAL
IPC: A61L2/20
Filed: 1996-10-28
Abstract: A system to deliver gas/vapor from solid materials. Specifically, the delivery system for the use of gas or vapor released from a solid material, such as a non-aqueous/solid hydrogen peroxide complex. The system is comprised of a delivery system that is configured to receive a plurality of disks containing the solid material and provide these disks into an injector. The injector heats the disks to produce a gas or vapor that is then provided into a chamber. The sterilization process can be done by gas or vapor alone, or in combination with plasma or ultra violet radiation. In particular, a control system automatically induces the delivery system to provide the injector with a disk and then remove the disk once the injection sequence is complete.
Patent CA-2236320-A1 (CA)
Title: Service creation apparatus for a communications network
Inventor: RAND JEFFREY KEVIN
IPC: G06F3/048
Filed: 1996-11-04
Abstract: A service creation system for a communications network of the intelligent network type has 3 different levels at which service creation activities can be carried out, these being SCE1, SCE2 and SCE3. The use of separate levels allows access to the service creation system to be kept functionally separate for users having different interests in the network. Hence, features which have to be installed at the network element level for a selected service to be available can be created in SCE1. Marketable service features, which give a view of features in that they encapsulate call handling logic thereof together with support and management descriptions of the feature, can be created in SCE2. Service packages, which permit collection of marketable service features to meet requirements of a service together with service-specific support and management information, can be created in either of SCE2 or SCE3. The service provider at SCE2 creates and tests edit graphs which comprise ordered sequences of marketable service features. These are then made available to the customer at SCE3. Profiles, which list the features relevant to a service for a user and provide data slots for the data necessary to each feature, can be provisioned and modified in SCE3 by the creation of execute graphs from edit graphs. In addition to marketable service features, metafeatures can be embedded in edit graphs. These are similar to marketable service features but have no associated screen information. This allows the user to generate execute graphs from what appears to be a blank screen but in practice has embedded constraints by means of the metafeatures, thus ensuring that the execute graph is still within tested constraints.
Patent CA-2237509-A1 (CA)
Inventor: MATSUOKA MITSUO
IPC: B21D22/22
Filed: 1998-05-11
Abstract: An object is to provide a structure for a drawing die, which can reduce, as low as possible, a noise generated when a die abuts against a thing plate on a blank holder of the drawing die.   A structure for a drawing die, comprises: a punch, a blank holder vertically movably supported by a cushion pin fitted over the punch, and a die disposed such as to oppose to the punch for moving the die up and down, in which a thin plate lifted by the cushion pin is placed on the blank holder, and the die is lowered to clamp the thin plate by the blank holder and the die, thereby drawing the thin plate, wherein a sub-blank holder is disposed between the cushion pin and the blank holder, a resilient material is interposed between the sub-blank holder and the blank holder, a run-up clearance is provided between the sub-blank holder and the blank holder, a run-up lever is rotatably mounted to the sub-blank holder for pressing the blank holder to allow the blank holder to run-up before the die collides against the thin plate on the blank holder, an operation cam for driving the run-up lever is disposed on the die at a location thereof opposed to the run-up lever, and the die collides against the thin plate on the blank holder after the blank holder runs up.
Patent CA-2243783-A1 (CA)
Inventor: BROWN STEPHEN JOHN
IPC: C08F4/06
Filed: 1998-07-21
Abstract: Organometallic complexes having two phosphinimine ligands and at least one activatable ligand are catalyst components for olefin polymerization. Preferred polymerization systems are prepared by combining the organometallic complexes with an ionic activator and/or an alumoxane. Preferred catalyst components contain titanium, zirconium, or hafnium and are activated with an ionic activator to form catalysts for ethylene polymerization.
Patent CA-2245096-A1 (CA)
Title: Adjustable ceiling and wall cover plate
Inventor: STEWART STEPHEN
IPC: H02G3/14
Filed: 1998-08-12
Abstract: A cover plate for ceiling or wall mounted electrical devices which follows the contour of the surface of the ceiling or wall about such devices. A mounting plate which can be mounted to a suitable box in the ceiling or wall has two sets of tongues to engage locking members on the cover plate. The locking members are flexible tabs which establish notches therebetween to receive the tongues of the cover plate and thus fix the cover plate to the mounting plate. The two detent posts with their associated tongues are independently applied so that the cover plate can more nearly match the contour of the ceiling or wall.
Patent CA-2245367-A1 (CA)
Title: Two-component bandwidth scheduler having application in multi-class digital communication systems
Inventor: HUNG ANTHONY
IPC: H04L47/2475
Filed: 1998-08-19
Abstract: The method for servicing queues holding messages, such as ATM data packets, for subsequent processing or transmission to a resource such as a communications link having a finite processing capability comprises the steps of servicing each queue by forwarding the messages thereof to the resource at time intervals corresponding to a guaranteed service rate of the queue, provided the queue is non-empty; and, during time intervals when none of the queues have messages being forwarded to the resource in conformance with the above step, servicing the queues in accordance with a proportion of a remaining or idle resource bandwidth allocated to each queue. The method is preferably carried out by a hierarchical scheduler comprising an exhaustive sub-scheduler servicing a plurality of lower level sub-schedulers in accordance with non-equal priority levels assigned thereto;  M non-work conserving shaper sub-schedulers feeding the exhaustive sub-scheduler; and N  work conserving idle bandwidth sub-schedulers feeding the exhaustive sub-scheduler.  In such a scheduler, a queue concurrently contends for service by one of the shaper sub-schedulers and one of the idle bandwidth sub-schedulers, wherein the shaper sub-scheduler servicing the queue has a higher priority level with respect to the exhaustive sub-scheduler than the idle bandwidth sub-scheduler servicing the same queue.  The technique distributes the idle bandwidth of the resource in a way which is de-coupled from the guaranteed service rates of the queues, thereby providing a more efficient bandwidth distribution.
Patent CA-2245764-A1 (CA)
Inventor: BUETER JOSEF
IPC: F15B15/14
Filed: 1997-01-04
Abstract: The invention relates to a screwable pressure medium actuated operating cylinder ha-ving closure elements for coupling the cylinder tube.   It is the object of the invention to develop a screwable pressure medium actuated opera-ting cylinder, which operates with secure sealing performance in the high pressure ran-ge, even with an aggressive atmosphere, which can be produced economically and which, using mainly non-machining manufacturing technology, is simple to manufactu-re, and has advantages resulting from these.   In accordance with the invention, the problems are solved in that the sealing is achieved by pressing together of conformal elastic guide closure element sealing surface (10), bottom closure element sealing element surface (11), cylinder. tube sealing surface (12) and inner housing sealing surface (22), which are provided on the guide closure element (2), bottom closure element (3) and cylinder tube (4) involved in the screwing-up, which are produced by non-cutting forming in the vicinity of the sealing surfaces (10; 11; 12; 22) by rolling up the thread and the sealing chamfers on the pressure elements and which preferably have a slope between 6 degrees and 12 degrees, where the pressure on the parts within the elastic region is so high that the axial and radial displacements pro-duced by the operating pressures will be within the elastic region, where the modulus of elasticity of the materials of the sealing surfaces in operating contact (10;  11; 12; 22), over the temperature range 0°C to 200°C is in the range of values of 60 to 250 ac 10 3 N/mm2 ~ 10 %, and the maximum load is determined by the particular limits of extensi-on of the materials employed is between 200 N/mm2and 1050 N/mm2.
Patent CA-2246048-A1 (CA)
Inventor: BOUSSIBA SAMMY
IPC: C12P23/00
Filed: 1997-01-30
Abstract: A process for cultivating Haematococcus cells for the large scale production of astaxanthin-enriched Haematococcus cells comprises: (a) cultivating said Haematococcus cells under conditions suitable for optimal vegetative growth of said cells, wherein said conditions comprise growing the cells under a light intensity in the range of about 30-140 .mu.mol photons.m-2.S-1 and at a temperature of between about 15-28 ~C; and (b) collecting the cells grown according to (a) and cultivating them further under conditions suitable for optimal induction and accumulation of astaxanthin in said cells, wherein said conditions comprise inoculating said cells of (a) into a growth solution containing essentially a carbon source and growing said cells at a temperature of below 35 ~C.
Patent CA-2250610-A1 (CA)
Inventor: ROEDER JUERGEN
IPC: H02J17/00
Filed: 1998-10-15
Abstract: The device for contact-free transfer of electrical signals between components rotating relative to each other, in particular in a steering wheel between steering column assembly and steering wheel, with an electrical circuit carrier with signal transmission and signal reception elements, said carrier is on the stator-side and an electrical circuit carrier with signal transmission and signal reception elements, said support is on the rotor-side wherein the stator-side and rotor-side electrical circuit carriers are axially or radially adjacent to each other with their signal transmission and signal reception elements, and thesignal transmission and signal reception elements of the adjacent stator-side and rotor-side circuit carriers are positioned relative to each other and with their perimeter extension they are configured so that bi-directional signal transmission is possible between stator-side circuit carrier and rotor-side circuit carrier in any possible relative rotational position of the rotor-side circuit carrier with respect to the stator-side circuit carrier.
Patent CA-2253169-A1 (CA)
Inventor: FURLONG JONATHAN W
IPC: F02N15/06
Filed: 1998-11-02
Abstract: A pinion gear retainer assembly for an electric internal combustion engine starter having a two piece keeper and a spring retainer which interface on correspondingfrustoconical surfaces and are urged into contact by a compression spring disposed over and extending along the starter shaft and abutting the pinion gear. The cooperative engagement of the frustoconical surfaces of the keeper and spring retainer permit the easy assembly and disassembly of the pinion retainer assembly without fasteners and/or their related tools.
Patent CA-2254455-A1 (CA)
Inventor: BONIN JACQUES LOUIS
IPC: F16C13/00
Filed: 1998-11-24
Abstract: A system for the connection of an annular tire (1) to a rotary drum (10) comprising blocks (2a, 2b) bearing upon the  side  faces  of  the  tire  and  held  in  place  by retaining elements  fastened to  the drum,  said blocks comprising a portion  (8)  inserted underneath the tire, the blocks being connected in pairs by clamping means (13)  independent of the tire and extending through the block portions  inserted under  the  tire,  the clamping control means  (4)  of  the  successive pairs  of blocks being arranged alternately on either side of the tire.
Patent CA-2255189-A1 (CA)
Inventor: TERRY ELDON J K
IPC: A01B61/04
Filed: 1998-12-02
Abstract: There is provided a disc unit for mounting a plurality of discs to an outer end of a mouldboard of a grader. The disc unit includes a mounting bracket for securing to a rear face of an outer end portion of the mouldboard. A frame is pivotally mounted on the mounting bracket and supports an axle which mounts the discs thereon. A hydraulic cylinder pivots the frame supporting the discs in relation to the mounting bracket for raising and lowering the discs to engage the ground at various depths of cut. A cushion valve releases the hydraulic cylinder in the case of an obstruction engaging the discs. The discs include a concave inner surface which are arranged to face towards the grader and partially in the direction of travel for urging particulate material away from the shoulder and towards a center of the road.
Patent CA-2256063-A1 (CA)
Title: Externally installable ball return crossover systems for ball nut and screw assemblies and methods of constructing and installing them
Inventor: BABINSKI JAMES A
IPC: F16H25/22
Filed: 1998-12-15
Abstract: A ball nut and screw system has a ball nut with adjacent helical groove turns providing a helical raceway with a screw for load bearing balls received in the raceway. The nut has an opening extending from its exterior to its interior to permit balls to be fed into the raceway. A compressible snap-in crossover, sized for compressed insertion into the opening, provides an axially diagonal, ball return passage in its underface for channeling balls from one portion of one of the adjacent turns over an intervening land surface on the screw to a portion of another turn to recirculate them. The crossover has opposed portions with nut groove entering projections thereon shaped to be snapped into the turns to define unoccupied turn portions on opposite sides of ball-occupied turn portions when the projections clear the opening upon insertion. For some purposes, wedging retainers can be received in the crossover once it is installed.
Patent CA-2260830-A1 (CA)
Inventor: MARSHALL LARRY R
IPC: A41D31/00
Filed: 1997-08-19
Abstract: This invention relates to improved synthetic sheet material useful in protective apparel, which material has a hydrostatic head pressure of at least about 75 cm of water, a Gurley Hill Porosity of less than about 15 seconds, and a Handle-o-meter stiffness of less than 28 mN/g/m2. The sheet material also demonstrates excellent bacteria and particulate barrier properties. The improved sheet material properties are obtained by reducing the ratio of polymer to the spin agent during spinning and by increasing the temperature of the spin solution such that smaller and less cohesive fibers are spun and laid down to form the fabric.
Patent CA-2265585-A1 (CA)
Title: Element d'amorcage/allumage avec un cavalier d'allumage installe sur une puce electronique
Inventor: BREDE UWE
IPC: F42C19/12
Filed: 1997-09-11
Abstract: La présente invention concerne un élément d'allumage doté d'un boîtier (1) dans lequel passent des lignes de raccordement électrique reliées à un cavalier d'allumage (3) monté sur une puce électronique (2) pourvue d'au moins un bloc d'allumage (4a, 4b). Pour permettre l'utilisation universelle de l'invention et éviter une décharge involontaire, il est proposé de concevoir les lignes de raccordement sous forme de pointes (pins) amenées dans le boîtier (1) par une traversée de verre (6), que le fond du boîtier (1) soit un corps métallique (7) présentant des alésages (8) dans lesquels pénètrent les traversées de verre (6), et que le corps métallique soit en liaison de forme avec le corps de plastique (9) qui recouvre la paroi périphérique du boîtier (1) et enveloppe les extrémités des pointes (5) ressortant de la traversée de verre (6).
Patent CA-2265879-A1 (CA)
Title: Liquid detergents containing proteolytic enzyme and protease inhibitors
Inventor: MCKILLOP KIRSTEN LOUISE
IPC: C12N9/99
Filed: 1997-09-19
Abstract: Aqueous liquid detergent compositions are described which comprise a proteolytic enzyme wherein the proteolytic activity is reversibly inhibited by a protease inhibitor selected from the group consisting of aldehydes and trifluoromethyl ketones.
Patent CA-2267250-A1 (CA)
Title: Separation of solids from aqueous suspensions
Inventor: ERIKSSON INGER VIKTORIA
IPC: D21F1/66
Filed: 1997-10-07
Abstract: Cellulosic fines and cellulosic fibres are separated from a suspension containing the fines, the fibres and hydrophobic materials by screening the suspension to remove the fibres, and then subjecting the resultant filtrate to dispersed air flotation in the presence of calcium and generally a separation aid to form an upper Reject fraction in which the hydrophobic material is concentrated and a lower Accept fraction in which the cellulosic fines are concentrated.
Patent CA-2267781-A1 (CA)
Title: Path to provide otdr measurements of an optical transmission system that includes optical isolators
Inventor: KIDORF HOWARD D
IPC: H04B10/2581
Filed: 1997-10-15
Abstract: A path couples a pair of optical fibers in an optical transmission system. The transmission system includes a plurality of optical amplifiers (17, 18) placed along the transmission line (10, 12). Associated with these optical amplifiers are optical isolators (21) that limit the flow of optical energy to a single direction. The path allows reflected or scattered light from one optical fiber after the optical isolator to be returned via the other optical fiber. This enables an OTDR device to obtain measurement information along the length of the fibers between optical isolators (21).
Patent CA-2269424-A1 (CA)
Title: Hybrid active-passive noise and vibration control system for aircraft
Inventor: ROSSETTI DINO J
IPC: G10K11/178
Filed: 1997-07-10
Abstract: A hybrid active-passive system (20) for reducing noise within a passenger compartment and vibration of a fuselage of a vehicle, such as an aircraft (turboprop, turbofan, or helicopter). The hybrid active-passive system (20) includes, in combination: an active acoustic producer such as a loudspeaker (35), Active Vibration Absorber (AVA) (34), or active absorber assembly (39) for producing antinoise within the compartment (42), and a passive resonant device, such as a passive Tuned Vibration Absorber (TVA) (36), or passive TVA assembly (37) for controlling vibration of the fuselage or structural supports interconnecting the disturbance source (e.g. power plants (26), propellers (28a), gearbox (57), main rotor (28m), tail rotor (28t)) and the fuselage wall (25).