baber/WOPTO huggingface dataset:
Patent CA-2158547-A1 (CA)
Title: Ventricular assist device with valved blood conduit and method of making
Inventor: WOODARD JOHN C
IPC: A61F2/06
Filed: 1995-02-06
Abstract: A ventricular assist device (16) includes a pair of valved conduits (18, 20) and a pumping portion (14) connected by these conduits (18, 20) into the circulatory system of a host patient (10). The pumping portion (14) and valved conduits (18, 20) are constructed and configured to minimize the number of material-surface transitions which blood must cross in flowing through the device (16). Also, the valved conduits (18, 20) include porcine xenograft valves (102), which are externally supported by stending structure (100) located outside of the blood-contacting flow path of the device (16). A  flexible shape-retaining inner wall member (46) of the valved conduits (18, 20) is impervious to blood, but defines a porous inner surface (48) on which a stable biological interface may form. Also, this inner wall member (46) is shaped with sinuses (114) which do not replicate either the porcine sinuses from which the xenograft valves (102) were taken, or human aortic sinuses.  However, the sinuses of the inner wall member (46) are configured to provide effective valve action by the formation of vigorous vortices in the blood flow downstream of these valves, and to avoid the formation of clots on the blood-contacting surfaces of the valved conduits (18, 20).
Patent CA-2165766-A1 (CA)
Title: Low Sudsing Liquid Detergent Compositions
Inventor: SURUTZIDIS ATHANASIOS
IPC: C11D1/22
Filed: 1994-06-27
Abstract: The present invention is a liquid detergent composition comprising a branched anionic surfactant. The compositions according to the present invention are low sudsing and have improved hydrophobic greasy soil removal performance.
Patent CA-2167150-A1 (CA)
Title: Liquid ejecting head, liquid ejecting device and liquid ejecting method
Inventor: KIMURA MAKIKO
IPC: B41J2/14
Filed: 1996-01-12
Abstract: A liquid ejecting method for ejecting liquid by generation of a bubble includes preparing a head comprising an ejection outlet for ejecting the liquid, a bubble generation region for generating the bubble in the liquid, a movable member having a fulcrum and a free end portion; and displacing the free end of the movable member by pressure produced by the generation of the bubble in the bubble generating portion wherein the free end of the movable member is restrained from entering the bubble generation region beyond a first position which is taken by the free end of the movable member before generation of the bubble.
Patent CA-2168744-A1 (CA)
Title: Arthroscopic surgical instruments
Inventor: HAHNEN KEVIN F
IPC: A61B17/28
Filed: 1994-08-03
Abstract: An arthroscopic surgical instrument includes a hollow tube with an actuator coupled to its proximal end and an end effector coupled to its distal end. The actuator and the end effector are coupled by a cylindrical push rod which passes through the hollow tube. The push rod includes a frangible link in the form of a flattened portion with strength reducing semicircular side cuts which breaks when a predetermined force is applied to the end effector by the actuator. The end effector includes a stationary jaw and a movable jaw. The stationary jaw is coupled to the distal end of the tube and receives the push rod. The movable jaw is coupled to the push rod and is pivotally coupled to the stationary jaw by arcuate engaging surfaces on both jaws. The movable jaw is also provided with a pair of serrated knife-like edges with an inner concave surface between them and the stationary jaw is provided with a receiving opening into which the movable jaw fits when the jaws are in a closed position. The receiving opening is defined by a pair of side walls having an upper taper which terminates in a sharp edge and a distal end wall having a concave inner surface. The concavity of the inner surface of the end wall is defined by a radius from the axis of rotation of the movable jaw. An electrical connection to the hollow tube is provided for supplying the jaws with a cautery current.
Patent CA-2171956-A1 (CA)
Title: Peat winning method
Inventor: TUPPURAINEN LEA
IPC: E21C49/04
Filed: 1994-09-16
Abstract: A peat winning method wherein peat sods (6) are produced from a frozen layer of peat. The peat sods (6) are cleaved out of a frozen layer of peat parallel to the varves (5) in the layer of peat at such a depth that the layer of peat is frozen on both sides of the cleaving line parallel to the varves.
Patent CA-2172332-A1 (CA)
Title: Procede de gestion d'appels selectifs cycliques pour la surveillance de ressources informatiques dans un reseau et procede mis en oeuvre par un tel dispositif
Inventor: DOUMARD RAPHAEL
IPC: G06F11/30
Filed: 1996-03-21
Abstract: La présente invention concerne un dispositif de gestion d'appels sélectifs cycliques pour la surveillance de ressources informatiques dans un réseau, remarquable en ce que pour effectuer des requêtes de demandes d'information auprès des différentes ressources du réseau en utilisant un seul traitement et un seul rythmeur, chaque requête étant émise avec une fréquence propre, il comporte une table de données DT, indexée, contenant les données pour chaque requête à émettre ayant son propre index idx ainsi que sa période théorique pr d'émission, une table d'appels sélectifs cycliques PT contenant lesindex idx des requêtes avec les dates d d'émission, la table PT étant triée par ordre croissant des dates, la première ligne contenant la date la moins éloignéedans le temps et une table d'attente WT indexée par les index idx des requêtes émises en attente de réponses et contenant les dates d+pr des prochaines émissions, ledit dispositif mettant en oeuvre un procédé de gestion d'appels sélectifs cycliques exécutant parallèlement un premier sous-procédé déclenché dès qu'un appel sélectif cyclique est placé dans la table PT par un second sous-procédé, le premier sous-procédé vidant la table PT, remplissant la table WT et s'arrêtant lorsque la table PT est vide alors que le second sous-procédé, déclenché dès la réception d'une réponse à la requête en cours, remplit la tablePT, vide la table WT et s'arrête lorsqu'il n'y a plus de requête en attente d'une réponse.
Patent CA-2173172-A1 (CA)
Title: Petroleum jelly with inositol phosphates
Inventor: ZNAIDEN ALEXANDER PAUL
IPC: A61K8/00
Filed: 1996-04-01
Abstract: A cosmetic composition is provided that includes an inositol phosphate dispersed within petroleum jelly through aid of a lipid system. The lipid systemmay include such components as a phosphatide, a sterol, a C10-C22 fatty acid andcombinations thereof.
Patent CA-2174505-A1 (CA)
Title: Liquid dispensing device
Inventor: DONSELMAN EDWARD H
IPC: B67D3/00
Filed: 1994-10-18
Abstract: A liquid dispenser is provided including a cabinet housing a liquid reservoir at its upper end and readily releasable from engagement with the evaporator coil of a refrigeration unit for removal from the cabinet. The reservoir is surrounded by insulation which may be removed in sections. The dispenser also includes a removable valve assembly with inlet openings press-fit to the reservoir outlets and to the inlets and outlets of a hot tank removably suspended below the valve assembly and liquid reservoir. The dispenser may be used as a conventional inverted bottled water cooler or fitted with an adapter including a dispensing feed tube for opening and closing special no-spill type bottle caps.
Patent CA-2174848-A1 (CA)
Title: Twin blower airhouse
Inventor: KISER THOMAS E
IPC: F24F11/02
Filed: 1994-11-01
Abstract: An airhouse (10) for supplying conditioned air to the interior of an enclosed building. Matched twin blowers (25) symmetrically arranged within the airhouse enclosure are operated in unison to insure a balanced air flow into the airhouse and through the blowers. A burner unit (66) mounted intermediate the blowers is flanked by matching outside air inlets (62) having controllable dampers (82) preferably of a canister-type, operable in opposition. A building return air inlet (80) located midway between the blowers likewise has canister-type dampers (84) operable in opposition.
Patent CA-2176538-A1 (CA)
Title: Drill pipe having concave wrenching recesses
Inventor: ANDERSON LLEWELLAN
IPC: E21B17/00
Filed: 1996-05-14
Abstract: A drill pipe has a central axis and comprises a first end and a second end with a portion of the second end being substantially triangular in the lateral cross-section and having three faces.  At least one concave wrench recess is located in each of the three faces of the substantially triangular portion of the second end.  Each of the recesses has a surface with an axially extending center line.  The center line is located a predetermined distance from the central axis, with this predetermined distance being less than or equal to the distance from the central axis of all other axial lines on the surface of the recess.     Each of the recesses may be comprised of two adjoining planes having exterior surfaces, the cross-section of the two adjoining planes forming an angle of less than 180 degrees as measured from the exterior surfaces of the two adjoining planes.          Alternatively, the recesses can be comprised of three adjoining planes.  Finally, the recesses may be comprised of an arcuate segment.
Patent CA-2177213-A1 (CA)
Inventor: GEVAERT STEVEN C
IPC: A47B21/00
Filed: 1996-05-23
Abstract: A utility receptacle assembly for use in combi-nation with a worksurface includes a base mountable to the worksurface and a utility receptacle pivotably and removably mounted to the base.  The base includes a passage within which the utility receptacle member is received, and the base further includes at least one recess located adjacent the passage.  A cover member is secured to the utility receptacle member, and functions to enclose the passage and the recess when the utility receptacle member is in a closed, inoperative position and to provide access to the recess when the utility receptacle member is moved to an open, operative posi-tion.  The utility receptacle member and the base include releasable engagement structure for maintaining the utility receptacle member in its open, operative posi-tion.  The releasable retainer structure is manually engageable by a user for returning the utility receptacle member to its closed, inoperative position.  A cable extends into an internal cavity defined by the utility receptacle member, and a strain relief assembly prevents movement of the cable relative to the utility receptacle member.  The recess includes a bottom section for mount-ing a communication jack having a first mounting configu-ration, and the bottom section is removable and replace-able with a different bottom section for mounting a communication jack having a different mounting configura-tion.
Patent CA-2177219-A1 (CA)
Inventor: SMITH JOHN STEPHEN
IPC: G02F1/136
Filed: 1996-05-23
Abstract: A method and apparatus for assembling microstructures onto a substrate through fluid transport.  The microstructures being shaped blocks self-align into recessed regions located on a substrate such that the microstructure becomes integral with the substrate. The improved method includes a step of transferring the shaped blocks into a fluid to create a slurry.  Such slurry is then dispensed evenly or circulated over the top surface of a substrate having recessed regions thereon.  The microstructure via the shape and fluid tumbles onto the surface of the substrate, self-aligns, and engages into a recessed region.
Patent CA-2177381-A1 (CA)
Title: Novel protease ii
Inventor: TANAKA YOSHIKAZU
IPC: C07K5/072
Filed: 1994-12-06
Abstract: A modified protease is disclosed, which is a mutant of the thermostable neutral metallo-protease having the amino acid sequence of SEQ ID NO:1 wherein the 150th aspartic acid residue is replaced with tryptophan.
Patent CA-2178265-A1 (CA)
Inventor: STRINGER BRADLEY J
IPC: G01B11/04
Filed: 1996-06-05
Abstract: A method and apparatus for measuring the dimensions and determining the three-dimensional, spatial volume of objects, particularly small objects.    Reflected laser light sensors are employed. A stationary measurement embodiment of the apparatus may be employed to measure regular cuboidal objects. A dynamic or in-motion, embodiment may be employed to measure the dimensions of cuboidal objects or a three-dimensional outline of objects of irregular configuration.
Patent CA-2178513-A1 (CA)
Inventor: BREDE PETER
IPC: B21D13/04
Filed: 1996-06-07
Abstract: The  invention  relates  to  a  method  of  manufacturing flattened tubes for heat exchangers.     Known flattened tubes are single-manufactured at high expense.     The achievement comprises the following work steps:   a)   continuously passing an endless strip of sheet metal (7) through the nip (49) of two embossing rolls (2, 3) rotating opposedly, particularly of a driving counter-embossing roll (2) and an embossing roll (3) having protuberances, b)   single-sided embossing of said endless strip of sheet metal (7) in said nip (49) by the embossing roll (3) with adjustable intrerruption of the embossing, c)   said adjustable interruption producing an alternating spacing of said nip (49) between said embossing rolls which in each case results in a non-embossed zone (10) between the embossed zones (39), d)   tube roll-forming of said embossed endless strip of sheet metal (7) into a closable endless flattened tube, e)   closing of said endless flattened tube, f)   parting off of said flattened tubes from said closed endless flattened tube in said non-embossed zone (10).
Patent CA-2179487-A1 (CA)
Title: Polyimide composition having improved properties
Inventor: GEORGE DANIEL EUGENE
IPC: C08K7/06
Filed: 1995-01-19
Abstract: Polyimide compositions containing natural graphite powder, along with carbon or graphite fiber, exhibit an unusual combination of low wear and friction and low coefficient of thermal expansion.
Patent CA-2179802-A1 (CA)
Inventor: SHOULDICE WILLIAM ROSS
IPC: B60B33/08
Filed: 1996-06-24
Abstract: A method of manufacturing a pinless caster comprising the steps of: 1.   selecting the appropriate material capable of being manufactured to a predetermined resistance to wear and fatigue, 2.   forming a first part from said selected materials, 3.   forming a first one-half load carrying raceway extending in substantially a first plane within the first part, 4.   forming a second one-half swivel bearing raceway extending in substantially a second plane disposed at substantially 90 degrees to the first plane within the first part, 5.   forming a second part from the selected materials so as to allow interfitting of the second part with the first part, when assembled, 6.   forming a third one-half load-carrying raceway extending in substantially the first plane within the second part, 7.   forming a fourth one-half swivel bearing raceway extending in substantially the second plane within the second part, 8.   ensuring that the first and second parts interfit so that the first and third load-carrying one-half raceways and the second and fourth swivel bearing one-half raceways compatibly align to form first and second load-bearing and swivel-bearing raceways, 9.   forming a first opening within the caster through the material thereof to proximate the interface between the first and second part when interfit, 10.    forming a second opening into the swivel bearing raceway, 11. if necessary surface treating said first and second parts once formed depending on the selected materials, so as to improve the resistance to wear and fatigue, 12.    providing a closure for said second opening, 13. placing bearings of predetermined resistance to wear and fatigue within the load-carrying raceway prior to interfitting the first part with the second part so as to mate the one-half raceways previously formed, 14. feeding bearings through the second opening into the swivel bearing raceway, 15. sealing the second opening with the closure, 16. preferably fastening a grease fitting into the first opening above mentioned, wherein the caster so formed is held together without the need of a pin thereby providing for the much improved load-carrying abilities of the caster with the load-carrying bearings and the swiveling ability of the caster with the separateswiveling bearings.
Patent CA-2182825-A1 (CA)
Inventor: GREEN DAVID K
IPC: E21B29/08
Filed: 1996-08-07
Abstract: The present invention provides a system for shearing tubing disposed in the flow passage of a gate valve.  The system includes a guillotine reciprocally movable transverse to the flow passage.          A pressure source communicates with an actuating surface of the guillotine, and a separate actuator signals the pressure source to exert sufficient pressure upon the actuating surface to reciprocate the  guillotine,  forcing  an  opposed  shearing  surface  of  the guillotine to flow into the flow passage and shear the tubing.  In a preferred embodiment, the pressure source is an explosive charge.
Patent CA-2184664-A1 (CA)
Inventor: NAD FERENC
IPC: H01R9/26
Filed: 1996-09-03
Abstract: An earthing bracket with particular application to a connecting device for telecommunications and data transmission is adapted to be mounted on a hat-type rail acting as a carrier rail. The advantage of the earthing bracket is its ease-of-replacement when used with connecting devices. Various earthing tasks are simplified by use of the earthing bracket. The earthing bracket has spring elements which resiliently latch into the hat-type rail a contact lug bent out from a bottom of the bracket and fastening elements for attaching the bracket to a bottom of the connecting device.
Patent CA-2184950-A1 (CA)
Title: Road Resurfacing System
Inventor: CULVER LARRY G
IPC: E01C23/082
Filed: 1996-09-06
Abstract: A road resurfacing device has a frame on which is mounted a ripper bar for ripping the road surface, to a controlled depth, and behind it a separator for separating coarse and fine material in the road surface such the coarse material is deposited on fine material. The frame is supported by rollers extending across the frame. The ripper bar has depending teeth in rows on both sides of the ripper bar and is rotatable so that either sets of teeth, which may be at different heights, rip the road surface. The separator is formed of ground turning discs mounted on angled shafts to direct material first to one side and then to the other. The ground turning discs rotate counter to the direction of movement of the frame. A method of resurfacing a gravel road includes ripping the surface of the gravel road to break up fine and coarse material near the surface of the gravel road; and separating coarse material from fine material such that coarse material is deposited on top of the fine material. The road may then be graded. The depth of rip is controlled to rip up gravel and not penetrate the sub-surface of the gravel road. The ripping and separation functions are achieved by moving the road resurfacing device of the invention across a gravel road behind, in front of or under a grader or tractor.
Patent CA-2185528-A1 (CA)
Title: Methods of preserving plant material
Inventor: JENNINGS LAWRENCE
IPC: A01N3/00
Filed: 1995-03-16
Abstract: The invention provides a method of making preserved plant material having the colour and texture of fresh plant material and substantially free from curling or distortion, the method comprising the step of immersing the plant material in an aqueous solution comprising from 40 % to 95 % by weight of one or more C3-C6 dihydric alcohols at a temperature of from 60 ~C to 95 ~C. The dihydric alcohols preferably comprise a major fraction of propylene glycol. The immersion is preferably carried out for from 5 to 90 minutes at a temperature of from 65 to 85 ~C. The aqueous solution may also contain dehydrating alcohols and/or polyethylene glycol. The aqueous solution of the dihydric alcohols exchanges for aqueous sap and juices in the plant material, e.g. cut green foliage or cut flowers, without changing the colour or texture of the material.
Patent CA-2185831-A1 (CA)
Inventor: PARATORE BERNARDO
IPC: H04J3/00
Filed: 1996-09-18
Abstract: In a Time Division Multiple Access (TDMA) communication network, a central office (CO) provides interactive communication between a service provider and a plurality of user terminals.  To synchronize transmissions of the user terminals, a timebase timer in the CO generates modulo N-bit cyclical reference counts as time markers. In a downstream direction to the plurality of user terminals, time marker insertion units in the CO receive both (a) separate digital TDMA transport streams having a predetermined data rate including data packets and Media Access Control (MAC) packets that are interspersed between the data packets at predetermined intervals, and (b) the time markers generated by the timebase timer, and insert a currently received time marker count into a concurrently received MAC packet. The resultant downstream TDMA transport streams with the inserted time marker counts in the MAC packets are transmitted in continuous TDMA output transport stream to the remote user terminals.  The time markers are independent of a data rate, a physical channel, and a channel protocol of the transport  stream. In each user terminal, a network interface module synchronizes itself by comparing received time markers and locally generated time marker counts for correcting a local oscillator frequency. Upstream channel units in the CO are synchronized using the timebase timer generated time markers for receiving and processing upstream data packets upon arrival at their preassigned channel unit.
Patent CA-2186135-A1 (CA)
Title: Automated Detection of Lesions in Computed Tomography
Inventor: GIGER MARYELLEN L
IPC: A61B6/03
Filed: 1995-03-30
Abstract: A method and system for the automated detection of lesions in computed tomographic images, including generating image data from at least one selected portion of an object, for example, from CT images of the thorax. The image data are then analyzed in order to produce the boundary of the thorax. The image data within the thoracic boundary is then further analyzed to produce boundaries of the lung regions using predetermined criteria. Features within the lung regions are then extracted using multi-gray-level thresholding and correlation between resulting multi-level threshold images and between at least adjacent sections. Classification of the features as abnormal lesions or normal anatomic features is then performed using geometric features yielding a likelihood of being an abnormal lesion along with its location in either the 2-D image section or in the 3-D space of the object.
Patent CA-2188301-A1 (CA)
Title: Reaction hydraulic turbine
Inventor: KANG HAN SOL
IPC: F03B17/06
Filed: 1995-04-13
Abstract: A reaction hydraulic turbine used for converting the energy of a flowing stream into mechanical energy of a rotating shaft is disclosed. In the turbine, the blades have a specifically-designed configuration suitable for not only reducing the hydraulic resistance but also for concentrating the energy of the flowing stream onto the blades. The internal surface of each blade has a half-circular curved section, while the external surface has a streamline section, which is smoothly put into or come out of water thus being almost completely free from hydraulic resistance. At the lowermost portion of the turbine, the energy of the flowing stream is effectively concentrated onto the curved internal surface of each blade.