baber/WOPTO huggingface dataset:
Patent CA-2151590-A1 (CA)
Title: Method of Extending the Validity of a Cryptographic Certificate
Inventor: HABER STUART ALAN
IPC: G09C1/00
Filed: 1993-11-17
Abstract: A cryptographic certificate attesting to the authenticity of the original document elements will lose its validity when the cryptographic function underlying the certifying scheme is compromised. The present invention extends the reliability of such a certificate by subjecting the combination of the original certificate and the digital representation of the document to a scheme based on a less vulnerable function using the steps of: obtaining the original document (11); applying the function to the document to create the original certificate (13); combining the original document and the certificate (15); and, applying another function to the combination  to create an extended certificate (17).
Patent CA-2153962-A1 (CA)
Inventor: FREMSTAD GREGORY E
IPC: A47G1/10
Filed: 1995-07-14
Abstract: A frame corner joining apparatus for joining two metal picture frame members at a predetermined angle to form a frame corner. The joining apparatus includes first and second legs disposed at the predetermined angle relative to each other, each leg receivable in a corresponding frame member channel. Each leg includes a fillet surface and a sloping surface, having a slot and a wedge piecewith tab received in the slot. The wedge piece may be in two positions: an unlocked position in which the wedge piece is at the lowest point on the slopingsurface, and a locked or raise position in which the top side of the wedge pieceengages a surface of the picture frame. The wedge piece may be adjusted manually with needle nose pliers or automatically with a pneumatic device until the fillet surface of the frame corner joining apparatus tightly abuts the back lip edge of the picture frame member.
Patent CA-2155411-A1 (CA)
Inventor: FOLINO FRANK A
IPC: F16H35/02
Filed: 1994-01-24
Abstract: Apparatus for reducing backlash in a speed converter using drive face cam (16), retainer slot means (20) with interacting balls (38) reciprocating in the slots and driven face cam (40). The backlash is reduced using axial preload in the form of a spring (27) acting on the back face of the drive face cam (16) or using an external adjusting means (407) acting on a spring (406) which acts upon the basic face of the drive face cam (401).
Patent CA-2156720-A1 (CA)
Title: Geminivirus-based gene expression system
Inventor: KRIDL JEAN C
IPC: C12N15/83
Filed: 1994-02-23
Abstract: A geminivirus-based vector system for obtaining controlled expression of a nucleic acid fragment of interest is disclosed. Tissue specific regulatory regions are identified employing cDNA screening and the resulting tissue specific regulatory regions are manipulated for use in geminivirus constructs to provide for transcription and/or expression of nucleic acid sequences nonindigenous to the geminivirus vector for introduction into plant cells. The vector system may be used to provide transformed plants having cells, tissues or parts with a modified phenotypic property.
Patent CA-2158313-A1 (CA)
Inventor: BELONGIA DAVID C
IPC: A21B7/00
Filed: 1995-09-14
Abstract: An automatic single-loaf bread-maker has a drive mechanism, an oven chamber, a bread pan in the chamber, and a kneading member in the pan and linked to the drive mechanism for mixing bread dough. An automatic controller energises the drive mechanism and regulating the temp. in the chamber. The pan has a single-loaf interior free of partitions and a spaced number of kneading members in it to allow automatic preparation of a single loaf of bread having a risen topside extending along its length. The bread-maker includes two upwardly-extending kneading members. The pan has a bottom which is longer than it is wide and the pair of kneading members are spaced along the length of the pan, whereby dough in the pan will be reached by one or both of the kneading members.
Patent CA-2158619-A1 (CA)
Title: Buoyancy body
Inventor: BOTTEN KNUT
IPC: B63B22/00
Filed: 1995-09-19
Abstract: Buoyancy body, particularly a buoy, for mooring of fish farming and similar applications, with a buoyancy element (12, 22) enclosed by an attachment means ( 14, 15; 23), said attachment means being adapted to be linked to one or more chains or similar mooring means. The attachment means comprises one or more clamps (14, 15, 23) of a ribbon material e.g. steel. The clamps. when more than one is used, are arranged adjacent one another with a mutual distance or angle on the buoancy element. The clamps are arranged on the buoyancy element to be clamped to exert a compressive force against the surface of the element, particularly by using clamping bolts. Means are arranged to prevent sliding of the clamps on the element.
Patent CA-2159225-A1 (CA)
Title: A demodulator for frequency shift keyed signals
Inventor: LA ROSA CHRISTOPHER P
IPC: H04L25/06
Filed: 1995-01-31
Abstract: A demodulator (414) for improving bit error rate performance consists of a zero threshold comparator circuit (502), a first threshold detector circuit (508), and a second threshold detector circuit (504). The first threshold detector circuit (508) compares the frequency information signal to a predetermined threshold, which is selected to optimize bit error rate performance. The second detector threshold circuit (504) is used to ensure that an alternating bit pattern has occurred. The demodulator (414) also includes a control device circuit (516) for coupling a plurality of bits (522) from a zero threshold comparator (502) to the output of the control device as a decision output signal (416) when the frequency information signal falls outside of either the first or second detector thresholds (508, 504). If the frequency information signal falls within both thresholds of the detector devices, then the decision output signal (416) for the control device (516) is formed by inverting the bit decision from the previous bit interval.
Patent CA-2162933-A1 (CA)
Title: Vibration damping for turbine blades
Inventor: ERNST PETER
IPC: F01D5/26
Filed: 1995-11-15
Abstract: In a device for damping blade vibrations of an axial-flow turbomachine,  the ends of the rotating blades form a seal toward the flow-limiting wall of a turbine casing. A ring of permanently magnetic material is attached to this flow-limiting wall of the turbine casing in the radial direction opposite the blade ends, which ring consists of at least one or more sectional rings of the same or different magnetic polarization. The blade ends are each provided with a cover plate which is made of a material which is a good electrical conductor.
Patent CA-2163026-A1 (CA)
Title: Prosthesis delivery
Inventor: RAVENSCROFT ADRIAN C
IPC: A61F2/90
Filed: 1994-05-18
Abstract: This invention provides smooth delivery and accurate positioning of prostheses in the body. In embodiments, systems are provided that include elongate members (16) extending generally along the axis of a supporting catheter (4) to free ends (17). The elongate members (16) extend through openings (10) in the prosthesis (6) to maintain the position of the prosthesis (6) on the catheter (4). The prosthesis (6) can be released from the catheter (4) by relative axial motion of the catheter (4) and the elongate members (16) such that the free ends (17) are removed from the openings (10) in the prosthesis (6). In embodiments, the elongate members (16) hold the distal end of a self-expanding stent (6) at a desired axial location and in radial compaction as a restraining sheath (8) is withdrawn. The friction between the sheath (8) and the stent (6) puts the stent (6) under tension, which reduces the radial force on the sheath wall, allowing smoother retraction. Proximal portions of the stent radially expand and axially shorten.
Patent CA-2163097-A1 (CA)
Inventor: BECHER FRANK
IPC: A61F13/02
Filed: 1994-04-25
Abstract: The invention concerns a method of producing a transdermal therapeutic system for the release of active substances to the skin in the form of a flat multi-chamber or multi-chamber channel system, in which a film containing the active substances is fitted between a top film and a bottom film. Subsequently, the top and bottom films are pressed together at a discrete and/or adjacent points so that the corresponding points between them in the film containing the active substances are displaced and chambers or channels containing the active substances are formed, the top and bottom films being permanently joined, at the same time or later, at the points at which they are pressed together.
Patent CA-2163889-A1 (CA)
Title: Symbolic language teaching and communications system utilizing tactile pattern discrimination
Inventor: MURPHY KEVIN C
IPC: G09B21/04
Filed: 1994-06-09
Abstract: A symbolic language teaching and communication system is disclosed which includes at least one block (10) having a pattern of raised protrusions (16) with rounded top surfaces for tactile discrimination. Each pattern represents an alphanumeric character for recognition by a visually impaired individual. The block has indicia (18) on one of the sides (15) corresponding to the alphanumeric character for recognition by a nonvisually impaired individual. Each block also has a curved region (17) to provide for the proper orientation of the block on a block retaining slate when forming words or sentences. The block retaining slate (40) also has a rounded corner (52) to provide for the proper orientation of the block retaining slate when forming or reading words or sentences. The block retaining slate has a triangular portion (62) between the engaging members to provide for proper alignment and spacing of the blocks on the retaining slate.
Patent CA-2164652-A1 (CA)
Title: Method and device for closing wounds
Inventor: MOUFARREGE RICHARD
IPC: A61B17/03
Filed: 1995-12-07
Abstract: A method and a device for holding together a pair of tissue edges defining a wound in a skin layer of a patient, the skin layer having an epidermic top layer and an underlying dermic layer. The device includes a first locking element, a second locking element, a locking structure positionned on either one of the first or second locking element for locking the first locking element to the second locking element. A first grasping structure is positioned on the first locking element for grasping on a portion of the dermic layer positionned adjacent the first locking element. A second grasping structure is positioned on the second locking element for grasping on a portion of the dermic layer positionned adjacent the second locking element. The first and second locking elements are adapted to be inserted by a puncturing action, on each side of the wound, through the epidermic layer and into the dermic layer, so that the first and second locking elements are completely embedded into the dermic layer of the skin. The first and second locking elements are then adapted to be pushed towards one another until the locking structure locks them together adjacent the tissue edges with the first and second grasping structure respectively grasping onto the portion of the dermic layer positionned adjacent the first locking element and the portion of the dermic layer positionned adjacent the second locking element, the first and second locking element thus closing the wound while being embedded into the dermic layer of said skin. The first and second locking elements are made of bioabsorbable material. Since the operation is effected by a puncturing action into the dermic layer, scarring is reduced to a minimum.
Patent CA-2166028-A1 (CA)
Inventor: DUNLOP GILLIAN MARY
IPC: A61C5/14
Filed: 1995-12-22
Abstract: The present invention relates to aids, such as a guard 1, for use in throat and oral cavity surgical operations, such as tonsillectomies, that require a surgeon to gain access via a patient's mouth, as well a method of surgery utilising such a guard 1. The guard 1 includes a first protection member 2 having a protection surface 3 and a second protection member 4 having a protection surface 5. The protection members 2 and 4 are connected by means of a spine 6. The spine portion 6 being integrally formed with the protection members 2 and 4 provides sufficient elasticity to enable the clamping ends 7 and 8 of members 2 and 3 respectively, to engage the inside and outside surfaces of a patient's mouth region to thereby reasonably attach the guard 1 to a side of a patient's mouth.
Patent CA-2167246-A1 (CA)
Title: Modular office furniture partition
Inventor: EDWARDS JOHN R
IPC: A47B95/00
Filed: 1996-01-15
Abstract: This invention relates to an upright partition for use in a modular office furniture system, the partition comprising: a frame comprising: two vertical posts each having outward opposing faces defining spaced apart parallel forward and rearward planes; a plurality of horizontal beams, at least one beam in each said plane, each beam having an inward face and an outward face, the inward face of each beam being connected to one said outward face of an associated post in an overlapping moment resisting connection; and a plurality of cladding panels each connected to one said beam; whereby an internal cavity is defined inward of the outward faces of said beams, and a raceway is defined outward of said outward post faces and inward of the outward faces of said beams. The invention also relates to systems for joining two or more partitions, a system for providing decorative end coverings over the end of a partition and over the converging ends of a plurality of converging partitions, and a system for hanging cladding panels on a partition.
Patent CA-2167347-A1 (CA)
Title: Hot Runner Nozzle
Inventor: GUENTHER HERBERT DIPL-ING
IPC: B29C45/27
Filed: 1996-01-16
Abstract: A hot channel nozzle (10) has an externally heated tube (16) inserted into a casing (12). At the lower end is the tip of the nozzle (26), with a temperature sensor in this region. Heater and sensor have connections (36, 30) pref. in a side recess (44). The innovation concerns the mounting of the element (20) and sensor into a cast, pref. brass body (24). The insulated, centred, heater winding in the body is surrounded by a steel tube (22). The sensor lies in a channel (40) in a circumferential segment of the body.
Patent CA-2167774-A1 (CA)
Title: Imitation coral and a method of making the same
Inventor: COOPER ROBERT TOM
IPC: B44F9/00
Filed: 1996-01-22
Abstract: Imitation coral consists of a coral shaped body formed out of expandable cellular foam.  The method of manufacturing the imitation coral includes the step of directing an upwardly angled spray of expandable foam through air to fall in an substantially expanded condition onto a collecting surface.
Patent CA-2168681-A1 (CA)
Title: Rf repeaters for time division cordless telephone systems without timing signals
Inventor: BEASLEY ANDREW
IPC: H04W16/26
Filed: 1996-02-02
Abstract: An RF repeater for exchanging digital telephone signals between a basestation and a mobile cordless handset, has an amplifier for amplifying basestation-to-handset signals and handset-to-basestation signals, a timing generator for providing a timing output and a switching arrangement operable in response to the timing output to sample the signals and to connect the sampled signals alternately to the amplifier for amplification thereby. The timing output of the timing generator having a frequency sufficient to effect Nyquist sampling of the signals by said switching arrangement and at least one filter connected to the amplifier for reconstructing the signals from the amplified samples thereof so that said signal timing information is not required.
Patent CA-2171270-A1 (CA)
Title: Method of setting a main controlled variable during the operation of a gas-turbine group
Inventor: HEPNER STEPHAN
IPC: F02C9/28
Filed: 1996-03-07
Abstract: In  a  method  of  setting  a  main  controlled variable during the operation of a gas-turbine group, the   gas-turbine   group   essentially   comprises   a compressor (40), at least one combustion chamber (43), at  least  one  turbine  (41)  and  a  generator  (46).          A desired value (3) is compared with a measured value (4)  and the resulting main control difference  (5)  is hierarchically allocated via a management unit (1) to at least one cascade (9,  18). The cascade (9,  18) is essentially  composed  of  a  main-controlled-variable controller (6, 15) and a downstream variable controller (8, 17) which acts on the respective variable actuator (14, 23).
Patent CA-2171869-A1 (CA)
Inventor: BUBLOT MICHEL
IPC: A61P31/12
Filed: 1994-09-07
Abstract: On décrit des protéines à activité antigénique destinées à être utilisées dans des compositions de vaccins contre les coronavirus. Les protéines à activité antigénique sont des protéines de coronavirus dénommées protéine S et protéines SM. La protéine S présente des régions antigéniques A1, A2 et/ou D modifiées, supprimées ou bien absentes, de manière à empêcher le phénomène de l'intensification dépendante des anticorps. Le peptide de signal de la protéine S peut être également modifié ou supprimé. L'invention concerne des procédés de préparation des séquences de codage de l'ADN codant pour ces protéines à activité antigénique ainsi que des procédés de formulation des protéines ou des séquences de codage de l'ADN codant ces dernières dans des vecteurs pharmaceutiquement acceptables, y compris des vecteurs recombinants vivants destinés à protéger les mammifères contre les infections à coronavirus. Les protéines et les vaccins à activité antigénique ci-décrits sont notamment dirigés contre la péritonite infectieuse féline et permet de protéger les felins contre les infections à virus de la péritonite inféctieuse féline.
Patent CA-2172501-A1 (CA)
Title: Modular device comprising container trays for the storage of food products
Inventor: DE JAEN TOLBA OS RAFAEL
IPC: B65D19/26
Filed: 1995-04-24
Abstract: A modular device in container trays for preserving food, characterized in that it is constituted starting from a plurality of container trays and a support for same, flexible and hinged, the container trays having a rectangular plan shape, and having an internal proportional hollow thickness, each support having at least two containers separated one other, emerging from both faces of the supporting tray, designed to maintain and preserve food, mainly sausages, the containers being ended at their upper part in a hermetic cover and of a transparent material, a semispherical or similar shape emerging from one of the larger branches of support, which are embedded in a similar opening, through a groove situated at a trapezoidal projection emerging from bodies united each other by a flexible element, which allows them to tilt.
Patent CA-2173620-A1 (CA)
Title: Contact-free sheet material diverting device
Inventor: LIZE GREGOIRE
IPC: F26B3/28
Filed: 1994-10-05
Abstract: PCT No. PCT/FR94/01165 Sec. 371 Date Apr. 3, 1996 Sec. 102(e) Date Apr. 3, 1996 PCT Filed Oct. 5, 1994 PCT Pub. No. WO95/10012 PCT Pub. Date Apr. 13, 1995A device for diverting sheet, web or mat material treated continuously uses an air cushion (6) formed about a cylindrical surface (4). Infrared transmitters (7), whose radiation is directed to a portion of the material (1) being diverted, are provided in or under the cylindrical surface (4), in addition to the air-blowing means (5) generating the air cushion (6). The same volume therefore houses means for diverting the material (1) and means for heating it, especially in order to dry it. At the same time that the blown air flow generates the air cushion (6), it also cools the infrared transmitters (7). Application, in particular, in the manufacture, transformation and treatment of materials such paper, fabric and synthetic film.
Patent CA-2174536-A1 (CA)
Title: Polyvinyl butyral tackifier for vinyl chloride polymer compositions
Inventor: MAINO PETER MICHAEL
IPC: C08K3/00
Filed: 1994-09-14
Abstract: A vinyl composition tile formulation is disclosed which comprises polyvinyl chloride, inorganic fillers and from about 0.5 % to about 4 %, by weight of said formulation, polyvinyl butyral, as a tackifier.
Patent CA-2175834-A1 (CA)
Inventor: FAYERMAN JEFFREY TOBIN
IPC: C12N9/48
Filed: 1994-11-16
Abstract: ADN codant la pro-carboxypeptidase B porcine, vecteurs comprenant ledit ADN et cellules hôtes transformées avec lesdits vecteurs, utiles pour la production de carboxypeptidase B porcine.
Patent CA-2177385-A1 (CA)
Title: Process for the stabilization of and stabilizer mixtures for pvdc-containing polyolefin mixtures
Inventor: PFAENDNER RUDOLF
IPC: C08L27/08
Filed: 1994-12-09
Abstract: Plastic mixtures, in particular recycled plastic mixtures, comprising predominantly polyolefins and 0.05-20 % by weight of PVDC can be stabilized against thermo-oxidative degradation by addition of a combination of an organic phosphite or phosphonite and a metal salt of a fatty acid.
Patent CA-2179167-A1 (CA)
Title: Integrated mutli-fabric digital cross-connect timing architecture
Inventor: READ E LAWRENCE
IPC: H04J3/16
Filed: 1994-12-21
Abstract: A timing architecture for integrating broadband, wideband, and narrowband subsystems (14-18) employs a broadland time base (100) having a first frequency, a wideband time base (102) having a second frequency, and a narrowband time base (104) having a third frequency. The broadband, wideband and narrowband time bases (100-104) are independent from one another when the intergrated subsystems (14-18) are not co-located. Frequency justification is provided at the interfaces between the broadband and wideband time bases (100, 102), and between the wideband and narrowband time bases (102, 104). Phase alignment circuitry and methods are used to adjust the phases of signals wherever signal multiplexing and redundant equipment switching are provided within the time bases (100-104).
Patent CA-2181877-A1 (CA)
Title: Polypropylene blown film
Inventor: GIACOBBE JAMES M
IPC: C08L23/10
Filed: 1996-07-23
Abstract: Disclosed is a blown film or sheet material comprising a broad molecular weight distribution propylene polymer material having a molecular weight distribution Mw/Mn, of about 4 to about 60, a melt flow rate of about 0.5 to about 50 dg/min, and xylene insolubles at 25°C of greater than or equal to 94%. A mixture of the broad molecular weight distribution propylene polymer material and a heterophasic olefin polymercomposition can also be used.
Patent CA-2182315-A1 (CA)
Title: Expression of heterologous proteins in attenuated bacteria using the htra-promoters
Inventor: KHAN MOHAMMED ANJAM
IPC: C12R1/19
Filed: 1995-01-31
Abstract: The invention provides a DNA construct comprising the htrA   promoter sequence operably linked to a DNA sequence encoding one or more heterologous proteins, replicable expression vectors containing the constructs, and attenuated bacteria containing the constructs or vectors. The invention also provides a vaccine composition comprising an attenuated bacterium as defined above, or a fusion protein expressed from a construct as defined above, and a pharmaceutically acceptable carrier.
Patent CA-2188668-A1 (CA)
Title: Method and apparatus for controlled contraction of soft tissue
Inventor: FANTON GARY S
IPC: A61B18/14
Filed: 1995-05-05
Abstract: An apparatus and method are provided for control contraction of tissue that includes collagen fibers. The apparatus includes a handpiece, and an electrode with an electrode proximal end associated with the handpiece. A distal end of the electrode has a geometry that delivers a controlled amount of energy to the tissue for a desired contraction of the collagen fibers. This is achieved while dissociation and breakdown of the collagen fibers is minimized. The handpiece, with electrode, is adapted to be introduced through an operating cannula in percutaneous applications. Additionally, an operating cannula may be included in the apparatus and be attached to the handpiece. The apparatus and method provides for a desired level of contraction of collagen soft tissue without dissociation or breakdown of collagen fibers.