baber/WOPTO huggingface dataset:
Patent CA-2082146-C (CA)
Title: Communications security and trusted path method and means
Inventor: HAYMAN KEN
IPC: G06F21/00
Filed: 1992-11-04
Granted: 2005-11-15
Abstract: A trusted path device is described which may be used stand alone or may be retrofitted to a users untrusted computer console or workstation so that an untrusted data input may be displayed on an untrusted display and verified by the user, following which the trusted data can be output to an untrusted or trusted device or network. The output may be encrypted or not, by means of an encryption device which may or may not use a 'one time pad' key provided from a structured array of retrievable "one time pad" keys having associated uniquely there with, a serial number which itself need not be encrypted but with which the input data and encrypted output data are uniquely associated. Sufficient "one time pad" keys are provided on a commonly available and physically manageable medium so as to allow much simplified key management procedures while still maintaining high levels of correctness and effectiveness of the encryption processes. Trusted devices as per ITSEC Level 6 may be used to implement the trusted path and encryption devices since the apparatus according to the invention are inherently simple in functionality thereby simplifying conformance with the relevant ITSEC and security equivalent requirements.
Patent CA-2087285-C (CA)
Title: Rf repeaters for time division duplex cordless telephone systems
Inventor: BEASLEY ANDREW
IPC: H04B7/26
Filed: 1993-01-14
Granted: 1996-06-18
Abstract: An RF repeater for interfacing with a base station for exchanging transmit and receive signals in a time division duplex cordless telephone system comprises a multicarrier amplifier having an input and an output and a transfer switch connected to the amplifier output and the amplifier input and having first and second switch states. The switch means connects receive signals from the handset to the amplifier input and the amplifier output to the base station in the first switch state, and connects the base station to the amplifier input and transmit signals from the amplifier output to be broadcast to the handset in the second switch state. The operation of the switch is controlled so that the transmit and receive signals are alternately amplified by the amplifier. Thus, only a single amplifier is required.
Patent CA-2090698-C (CA)
Title: Rear dumping vehicle
Inventor: DICKERSON ALAN WILLIAM
IPC: B60P1/28
Filed: 1991-08-26
Granted: 2003-10-28
Abstract: A very large rear dumping vehicle of the type used in mining operations, comprising: a main frame, front wheels and rear wheels carried by the main frame, a rear dumping load carrying body pivotally mounted to the main frame at transversely spaced rear supports for pivotal movement about a pivot axis between a tipping position and a lowered position, means for tipping the body about the pivot axis, said body comprising a floor, side walls and a forward end wall defining a load carrying region, whereby said rear dumping load carrying body is supported in said lowered position on said main frame only at the transversely spaced rear pivot locations and at transversely spaced forward support points of the body disposed in the proximity of said end wall; characterised in that said means for tipping the body comprise hydraulic cylinders connected to mounting points of the body disposed in the proximity of said end wall and to mounting points on the main frame which are close to above a line between the centres of the front wheels of the vehicle and in that the floor of the load carrying body comprises longitudinally extending strengthening beams and a single transverse reinforcing beam, said single transverse reinforcing beam being connected to said spaced rear pivot supports.
Patent CA-2091306-C (CA)
Title: Medical solution tubing
Inventor: MUELLER WALTER BERNDT
IPC: B65D35/08
Filed: 1993-03-09
Granted: 2003-06-10
Abstract: A medical solution tubing useful in combination with medical solution packages and pouches includes an outer layer of polypropylene, ethylene propylene copolymer, or modified ethylene propylene copolymer; an intermediate layer comprising a polymeric elastomer, a blend of a low melt index EVA and a high melt index EVA, EnBA, or blends thereof, or a blend of an EVA-based polymeric adhesive and an elastomeric polyester; and an inner layer comprising EVA, a blend of a low melt index EVA and a high meld index EVA, EMA, E.nBA, or blends thereof, or PVC.
Patent CA-2094277-C (CA)
Title: Processing of yeast refuse and resulting product
Inventor: GREENSHIELDS RODERICK
IPC: A23L27/60
Filed: 1991-10-17
Granted: 2002-11-26
Abstract: Yeast refuse having a solids content not exceeding 20 % by weight is digested with a food grade alkaline salt such as sodi-um bicarbonate, whole cells are separated from the extracted refuse so as to produce a material rich in disrupted ceU. walls which is then treated with an alkaline extraction agent and bleached either before or after the separation step, followed by lowering the pH of said bleached material using a food grade acid such as dilute hydrochloric acid. The product comprises a yeast beta-glucan which is substantially free of yeast cells, and which predominantly comprises a multiplicity of yeast ghosts or shells comprising substantially uncollapsed yeast cell walls. The yeast ghosts or shells contain a substantially lower quantity of yeast cell contents relative to the whole cells of the yeast refuse.
Patent CA-2096874-C (CA)
Title: Variable wall concrete molding machine
Inventor: DEL MONTE ERNEST J
IPC: B28B7/42
Filed: 1993-05-25
Granted: 2004-05-11
Abstract: A portable concrete molding apparatus for forming concrete structures of a predetermined configuration, either on-site or at a central manufacturing facility. The apparatus includes a trailer having furnace plenum bounded by a pair of fixed walls. Each fixed wall cooperates with a movable wall for forming a mold therebetween.      Each movable wall includes a concrete inlet for introducing concrete into the bottom portion of the mold. The fixed and movable walls include push-off valves for ensuring separation of a concrete structure from the mold walls, as the mold walls are separated.
Patent CA-2103207-C (CA)
Inventor: CANDORE AMEDEO
IPC: B65H41/00
Filed: 1993-11-16
Granted: 2000-05-23
Abstract: Featured for removing the cover sheet from a dry film laminated on a board is the combination of a knurling wheel action and an air blowing injector which work together in a single stroke to separate the cover sheet from the edge of the dry film, with which combination a sucking roll is provided in cooperative relation, and which, upon touching the surface of the board, starts to rotate whereby the cover sheet, already separated in an area thereof from the dry film, is sucked and peeled from the dry film by the sucking roll and with continued rotation of the sucking roll is removed in its entirety from the dry film.
Patent CA-2105366-C (CA)
Title: Environmental test apparatus
Inventor: UEDA ICHIRO
IPC: G01M99/00
Filed: 1993-09-01
Granted: 1998-06-30
Abstract: An environmental test apparatus comprising a substrate on which a test specimen is mounted securely, a cover disposed on the substrate for housing the test specimen within a tightly closed space thereof, a temperature/moisture adjusting means for adjusting temperature and moisture in the tightly closed space, a memory means for storing control data such as accumulated past data or various kinds of environment reproducing data, a control means for controlling the temperature/moisture adjusting means based on the control data stored in the memory means and a data measuring means for measuring and recording various kind of data for environmental test.  Since the test specimen is disposed in the tightly closed space and temperature and moisture in the space are controlled based on the control data such as the past accumulated data or various kinds of environment reproducing data, test, for example, on transportation, storage or accumulation can be conducted with no actual experience of such an environment but under simulated environmental conditions relevant thereto, so that the effects of the environmental conditions on the cargos can be specified scientifically and accurately.
Patent CA-2111798-C (CA)
Inventor: HUYBRECHTS ROBERT
IPC: C08L33/10
Filed: 1993-12-17
Granted: 2010-03-23
Abstract: An article made from a thermoplastic composition such as customizable mouldable parts of articles such as dental plates or hand grips or sports equipment which composition is set below 37°C and is conformably mouldable between about 50°C and 95°C. Such a composition includes a methacrylate polymer which may soften or become liquid in the range of 50°C to 95°C and may be mixed with another such polymer which is set at that temperature range so that a mouldable mass is formed, for example by warming in warm water. The invention includes a method of forming the composition.
Patent CA-2114662-C (CA)
Inventor: SCHAFFNER JAMES H
IPC: G02F1/355
Filed: 1994-02-01
Granted: 1999-06-01
Abstract: In accordance with the teachings of the present invention, an enhanced performance opto-electric modulator (30 or 70) is provided herein which compensates for phase velocity mismatches between optical modulation and an RF electric signal. The modulator (30) includes an optical waveguide (38, 40) formed in a substrate (32) and coupled to an optical input (56).  An RF waveguide (46, 48)  is formed on the substrate  (32)  for applying an electric field  (59)  to a modulation region  (50)  adjacent  the optical waveguide so as to modulate an optical signal. The  substrate  (32)  has  a  ferroelectric  domain  which includes periodically inverted and non-inverted regions (54)  and  (52)  which compensate  for phase differences within  the modulation  region  (50).    In  a  preferred embodiment,   the   optical   waveguide   includes   two substantially parallel optical waveguides (38) and (40) which have outputs combined to provide for an amplitude modulated (AM) optical output signal (60).
Patent CA-2122859-C (CA)
Title: Intake manifold construction for an internal combustion engine
Inventor: DOEHRING KLAUS
IPC: F02B29/02
Filed: 1994-05-04
Granted: 1998-12-29
Abstract: An intake manifold for an internal combustion engine includes a rigid intake pipe having a flow-through passage, and an adjustment structure for adjusting the size of the flow-through passage. The adjustment structure is a check valve which opens only in direction of the internal combustion engine and includes a valve body and a valve seat which are movable relative to each other and are selectively interengageable for the closing of the flow-through passage. The check valve prevents a backflow of gases from the internal combustion engine into the intake manifold thereby increasing the engine's power output especially at low engine speeds.
Patent CA-2125230-C (CA)
Inventor: EKINS ROBERT
IPC: C21C7/068
Filed: 1994-06-06
Granted: 2002-12-10
Abstract: Suivant ce procédé: on distille de l'air dans un appareil de distillation associé à une ligne d'échange thermique dans laquelle on fait circuler un fluide calorigène sous haute pression: on alimente un stocakge, au moins de façon intermittente, en gaz sous forme liquide; et on amène à une pression de vaporisation du gaz sous forme liquide soutiré du stockage, et on le vaporise sous cette pression dans la ligne d'échange thermique. Application à l'alimentation en oxygène, en azote et en argon sous pression d'installations de production d'acier inoxydable telles que les fours à arc électriques associés à un procédé AOD.
Patent CA-2125267-C (CA)
Title: Device for applying a voltage to an electronic circuit, particularly to an electronic circuit associated with a current sensor on an electrical line
Inventor: MONCORGE JEAN-PAUL
IPC: H02M3/158
Filed: 1994-06-06
Granted: 1997-09-16
Abstract: Device for supplying a power supply voltage to an electronic circuit, the said device comprising a current transformer having a primary circuit (10) and a secondary circuit (11), a rectifier bridge (12) at the terminals of the secondary circuit, and, at the output terminals (P, Q) of the rectifier bridge, a first capacitor (C1) in parallel with a first resistor (R1) at the terminals of which the said power supply voltage (U) is picked off, a first switch (I1) being arranged between the output terminals (P, Q) of the rectifier bridge, characterised in that, between the output terminals (P, Q) of the rectifier bridge, it comprises a branch comprising, in series, a second capacitor (C2), a second switch (I2) and a second resistor (R2), the first switch (I1) being controlled by a first threshold detector (DS2) at the terminals of the second capacitor (C2), the second switch (I2) being controlled by a second threshold detector (DS1) at the terminals of the first capacitor (C1). <IMAGE>
Patent CA-2128931-C (CA)
Title: Touret pliable
Inventor: GEORGES PIERRE
IPC: B65H75/22
Filed: 1994-07-27
Granted: 1999-02-23
Abstract: Il comporte des joues associées à un tambour comportant des éléments articulés comportant chacun deux parties et ayant des faces extrêmes sensiblement perpendiculaires à une direction longitudinale de ces parties, ces parties ayant des extrémités en regard reliées entre elles et des extrémités opposées reliées aux joues par des organes élastiques.
Patent CA-2129381-C (CA)
Title: Method and apparatus for registration of a seal
Inventor: SAINDON STEPHEN A
IPC: B31B23/00
Filed: 1994-08-03
Granted: 2005-10-25
Abstract: A plastic bag making machine including a cylindrical drum with a variable diameter is disclosed. A plurality of seal bars, substantially parallel to the drum's rotational axis, define the circumference: of the drum. Bags are made from a film that includes registration marks detected by a detector disposed near the film's path. A detector detects the revolution of the drum and an encoder provides signals indicative of the position of the film. A controller determines the distance between the registration marks using the output of an encoder as a position signal and adjusts the diameter of the drum in response to the determined distance. The controller also determines the position of the seal bars relative to the registration marks and adjusts the diameter of the drum in response to the relative position.
Patent CA-2129903-C (CA)
Inventor: LECORNEY DAVID COLIN
IPC: H04M3/22
Filed: 1993-03-05
Granted: 2001-05-15
Abstract: L'invention se rapporte à un dispositif qui réagit lorsque des erreurs surviennent dans un processus industriel. Ladite technique consiste à extraire des informations du processus industriel et à déterminer les événements normaux et les erreurs (10), à transmettre les informations extraites à un filtre d'erreurs (26, 28) qui comprend un dispositif à fuite avec une taille de pas, un seuil et un plafond d'erreurs définis (22), et à transmettre une alarme lorsque le taux d'erreurs dans le processus industriel sort du pas, du seuil et du plafond (24) d'erreurs définis. Comme mentionné précédemment, ladite invention prévoit également une méthode rigoureuse de détermination des paramètres (16) dans l'algorithme d'un dispositif à fuite.
Patent CA-2130009-C (CA)
Title: Olefin polymerization catalyst and process for preparing polypropylene and propylene block copolymer
Inventor: SHINOZAKI TETSUNORI
IPC: C08F4/02
Filed: 1994-08-12
Granted: 1998-09-22
Abstract: The present invention provides olefin polymerization catalysts and processes for preparing  a polypropylene and propylene block copolymer using said olefin polymerization catalysts.    The olefin polymerization catalyst (1) of the invention is formed from:    [I-1] a contact product obtained by contacting:        (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (C) a specific organosilicon compound;   [II-1] (D) a specific polyether compound; and optionally, [III] an organometallic compound catalyst component The olefin polymerization catalyst (2) of the invention is formed from:    [I-2] a contact product obtained by contacting:      (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (D) a specific polyether compound;    [II-2]  (C) a specific organosilicon compound; and optionally, [III] an organometallic compound catalyst component.    The contact product [I-1] or [I-2] may be replaced by one which is obtained by prepolymerizing an olefin of 2 or more carbon atoms in the presence of the catalyst components for the contact product [I-1] or [I-2] in such a way that the amount of the prepolymer formed is 0.01 to 2,000 g based on 1 g of the solid titanium catalyst component (A).    In the processes for preparing  a polypropylene according to the invention, propylene is polymerized in the presence of the above-mentioned olefin polymerization catalysts.  According to the invention, highly isotactic polypropylene can be prepared.    The processes for preparing a propylene block copolymer according to the invention comprises the steps of polymerizing propylene to form a polypropylene component and copolymerizing ethylene and an .alpha.-olefin of 3 to 20 carbon atoms to form an ethylene/.alpha.-olefin copolymer component, in an optional order, in the presence of the specific polymerization catalysts.    In the propylene block copolymer obtained by the invention, the polypropylene component is highly isotactic and the rubber component has a high intrinsic viscosity [n].
Patent CA-2131448-C (CA)
Title: Tuyere de decapeuse pour le decapage sans poussiere des surfaces lisses
Inventor: KIESS KARL HEINZ
IPC: B05B3/06
Filed: 1993-11-08
Granted: 1999-04-13
Abstract: Une buse de sableuse pour le décapage sans poussière de surfaces lisses comprend un corps tubulaire (1) pourvu d'une tête (3) de buse tournante pouvant être raccordée à un tuyau de décapage (2). La tête (3) de buse est recouverte d'une plaque terminale (4) pourvue d'orifices inclinés (7) afin que ladite tête (3) tourne sous l'effet de la projection du matériau de décapage au sable. Afin que le dispositif s'adapte à différentes nécessités de nettoyage, chaque orifice (7) est pourvu d'un conduit de décapage (9) monté pivotant, avec un raccord à emboîtement (10) au niveau de la plaque terminale (4).
Patent CA-2134811-C (CA)
Title: Dmd display system
Inventor: SAMPSELL JEFFREY B
IPC: H04N5/74
Filed: 1994-11-01
Granted: 2005-02-01
Abstract: A digital video display system (100). The system receives digital data from either broadcast video (102) or an alternate source (107), in either analog or digital form. The system processes the data into display data and loads the data onto a digital micromirror device (112). The data is either formatted for color-sequencing or separated into color data for separate devices. The data causes the individual cells on the device to respond and then they are illuminated. The light coming from deflected cells is displayed on a display surface.
Patent CA-2139701-C (CA)
Inventor: ROBISON CLARK
IPC: E21B33/12
Filed: 1995-01-06
Granted: 1999-08-17
Abstract: A packer for a subterranean oil and/or gas well. The packer has a control signal bypass passage incorporated in the packer body. The control signal bypass passage may be opened and closed via reeled tubing to selectively allow and disallow passage of a control signal through the packer. The packer supports an electric submersible pump for enhancing flow of well fluids. The control signal bypass passage of the packer connects with a control line from the surface and with a separate control line extending downhole from the packer in the well. The control line, downhole from the packer, connects with a safety valve operable by control signal passed from the surface, through the packer, and downhole through the control signal bypass passage of the packer.
Patent CA-2143983-C (CA)
Inventor: PANTTILA VAEINOE
IPC: F16H57/025
Filed: 1995-03-06
Granted: 1999-09-21
Abstract: A drive gear for a group of cylinders and a method in the drive of cylinders in which the drive gear has a box frame including a front plate, a rear plate, and side plates, and to which box frame, rotational drive is introduced from outside the gearbox through a shaft.  Rotation of the shaft causes rotation of a cogwheel and further, two other cogwheels are rotated which are in contact with this cogwheel, and the drive is transferred to both sides of the gearbox and further to the cylinders.  The box frame of the gearbox is stationarily supported on a foundation which receives the weight of the gearbox shafts and cogwheels and the weight of the box frame.  The load arising from the weight of the gearbox is transferred to the foundation through the box frame of the gearbox.  Two cylinders and their shafts can be operated so that, between the shafts and the gearbox, there is a floating coupling which permits certain angular changes for the shafts of the driven cylinders.  In this manner, torsion arising from faults in the directions of the shafts is not transferred from the cylinders to the gearbox or from the gearbox to the cylinders.
Patent CA-2148124-C (CA)
Inventor: TAYLOR DELBERT
IPC: E04H15/28
Filed: 1993-10-28
Granted: 1999-06-01
Abstract: A collapsible shelter or tent (10) commonly known as an umbrella tent, that includes an integral frame (11) and cover (12), the frame including tent poles formed of interconnected tent pole section (15) whose ends (66, 67) are telescoped together and are urged in their telescoped coupling by an elastic cord (68) that is maintained, under tension, within each tent pole. Each tent pole (15) is pivotally connected at a top end to extend radially from a crown (14), with the opposite tent pole end maintained to a web strap (46) that extends from a base of which cover, with a number of slides (50) mounted to slide along each tent pole (15) that individually connect to and extend from loops secured at verticalintervals to extend outwardly from which cover. Both the crown (14) and an erecting ring (16) each receive a center pole (13) fitted to slide axially therethrough, and the erecting ring (16) pivotally mounts a rib end (18) thereto that pivotally couples at its opposite end to the tent pole at an intermediate point therealong. When the crown (14) and erecting ring (16) are slid together along the center pole (13), each rib (18) pivots outwardly urging the connected tent pole (15) into a bowed attitude, providing an umbrella type opening of the shelter, that can then be collapsed by pulling the erecting ring (16) away from which crown (14) slide, collapsing the frame. Whereafter the individual tent poles (15) can be disconnected by pulling them apart and folding them together into a bundle for rolling in the tent material.