baber/WOPTO huggingface dataset:
Patent CA-2200441-A1 (CA)
Title: Hollow light guide for diffuse light
Inventor: WHITEHEAD LORNE A
IPC: G02B6/42
Filed: 1995-10-27
Abstract: An outer prism light guide (48) surrounds a cover (52) which in turn surrounds a light source. Guide (48) is formed of prism light guide wall material having uniform shape in cross sections perpendicular to a first octature symmetry direction (44), with its optical centre line (50) parallel to direction (44).  Surfaces of the wall material are substantially in octature relative to direction (44). A surface normal vector (46) at any point on any internal surface of the material is either substantially parallel or substantially perpendicular to a first notional line extending from the point through and perpendicular to optical centre line (50). Cover (52) has cylindrical symmetry about optical centre line (50) to intercept a substantial portion of light emitted by the source. Cover (52) is formed of prism light guide wall material, with surfaces of the cover wall material substantially in octature at any point (54) on cover (52) relative to a second, spatially variable octature symmetry direction (56), which, at point (54), is perpendicular to first octature symmetry direction (44); and, perpendicular to a second notional line (58) extending from point (54) through and perpendicular to optical centre line (50). A surface normal vector at any point on any outer surface of cover (52) is either substantially parallel or substantially perpendicular to first octature symmetry direction (44). Cover (52) is confined to a region sufficiently close to optical centre line (50) to substantially prevent propagation of light rays incident on an inside surface of cover (52) to and through the light guide wall material.
Patent CA-2201033-A1 (CA)
Inventor: BIG CANOE ELLIE
IPC: F16K35/10
Filed: 1997-03-26
Abstract: A Child-proof water tap safety cover that is installed on bathtub/shower, sink and basin faucets by fitting the device over the faucet control handles and by using hand pressure is locked into place over the faucet handles and shower control by means of spring loaded clips. The device is removed by depressing the spring activated buttons on the top and bottom of both sides of the device with hand/finger pressure. This action lifts the securing clips, thus, releasing their grip on the back of the faucet handles. The device is then moved away from the faucets.
Patent CA-2202190-A1 (CA)
Title: Document production machine having a high capacity, high reliability cassette tray sheet feeding assembly
Inventor: MILLER GREGORY P
IPC: B65H3/06
Filed: 1997-04-09
Abstract: A high capacity, high reliability cassette tray sheet feeding assembly for supporting a high capacity stack of sheets, and for feeding such sheets with a high degree of reliability, one at a time, In a sheet using machine. The high capacity, high reliability cassette tray sheet feeding assembly includes a cassette frame for removing and reinstalling into a sheet supply station of the sheet using machine. The cassette frame has a front end over which sheets are fed into the machine, and a forward feed comer snubber that is mounted to one comer of the front end of the cassette frame for preventing the feeding of multiple sheets at a time. The cassette frame includes a fixed position stationary base plate within the cassette frame for supporting a high capacity stack of sheets having a topmost sheet. The high capacity, high reliability cassette tray sheet feeding assembly further includes a variable position sheet receiving path, and a pivotable feed wheel assembly for reliably feeding topmost sheets seriatim from the fixed position stationary base plate into the variable position sheet path. The pivotable feed wheel assembly has a first position for a full stack of sheets, and a second position for an empty base plate. Importantly, the pivotable feed wheel assembly has a constant sheet feeding angle, and a constant sheet feeding normal force, for enabling continuous high reliability feeding of sheets from the first through to the second position thereof.
Patent CA-2206505-A1 (CA)
Inventor: KATO YASUKO
IPC: G10L15/28
Filed: 1997-05-29
Abstract: To construct an inexpensive speech recognition system, a speech recogntion system includes an analyzing unit for extracting a sound, sequentially dividing the sound into a plurality of frames, converting each of the frames sequentially to first data, and sequentially storing the first data to an input pattern memory, a distance calculating unit for reading a predetermined number of the first data from the input pattern memory, reading one of second data from a standard pattern memory, calculating first distances between each of the predetermined number of the first data and the one of the second data, and a judging unit for judging a word representing the sound based on the first distances.
Patent CA-2206808-A1 (CA)
Inventor: BOWES DANIEL R
IPC: B23D61/12
Filed: 1997-06-03
Abstract: A cardboard box containing glass containers is opened by passing the box past a continuously moving bandsaw blade which cuts through lower portions of upright sides of the box.  The bandsaw blade possesses a front surface having only straight (non-set) teeth.  The teeth have forwardly and downwardly inclined cam surfaces on their upper surfaces which cause the bottles to be relatively smoothly raised, with minimal scratching and chipping, as the blade travels therebeneath.
Patent CA-2207738-A1 (CA)
Title: Optical tube and method
Inventor: MARMARO JEFFREY M
IPC: C12Q1/68
Filed: 1996-12-03
Abstract: An improved fluorescence monitoring apparatus for fluorescent emission from a sample in response to sample irradiation by an emission beam is disclosed. The apparatus employs a sample tube having surface roughness characteristics which substantially reduce background fluorescence emission due to contamination of the tube holder in the apparatus. Also disclosed is a method of reducing such background, by texturing of a sample tube to produce desired roughness characteristics.
Patent CA-2208663-A1 (CA)
Inventor: HOUDEN DOUGLAS ROSS
IPC: G06F19/00
Filed: 1997-06-23
Abstract: A method of diagnosing, assessing and managing the dental health of a patient is provided. The method comprises the steps of assessing patient risk factors relevant to the development of caries and risk factors relevant to the development of periodontitis. A risk assessment level is determined incorporating a computerized model and a central database for collection of information. Treatment options are selected based on the risk assessment levels for that patient. The treatment methods teach an ordered stepwise method of managing individual patient care based on patient need and prevention. Cost containment and cost efficiencies are significant.
Patent CA-2208737-A1 (CA)
Title: Portable illumination device for modifying circadian rhythms
Inventor: HAGIHARA HIROSHI
IPC: A61N5/06
Filed: 1996-11-26
Abstract: A portable light treatment device is capable of delivering the illumination which is sufficient in amount but mild to the subject's eyes for assuring effective light treatment without unduly annoying the subject.  The device has a surface illuminating unit having an effective surface region of at least 15 cm2 which emits a visible diffused light of reduced luminance variation. The light is selected to give an illuminance of at least 2000 LUX measured at an eye position of the subject. A mount member is provided to mount the surface illuminating unit to a portion adjacent to eyes of the subject to direct the diffused light to the eyes of the subject. Thus arranged portable illumination device has an advantage of delivering sufficient amount of the light to the subject's eyes without dazzling the subject and therefore administering effective treatment without imposing severe restrictions to the subject's daily activities. Preferably, the diffused light is selected to have an average luminance of from 1,000 to 4,000 cd/m2 and have a maximum luminance of less than 6,000 cd/m2 in order to minimize the dazzling effect. Further, the ratio of a maximum to minimum luminance appearing in the effective surface region is selected to be less than 2.5 and difference in luminance between any two points spaced by 2 mm is less than 100 cd/m2 in order to further minimize the dazzling effect.
Patent CA-2211455-A1 (CA)
Title: Helium recovery for optical fiber manufacturing
Inventor: HEIM CARL JOSEPH
IPC: G02B6/00
Filed: 1997-07-25
Abstract: A method for recovering helium from an optical fiber manufacturing process which allows recovery from most steps in the manufacturing process, including deposition and consolidation steps.  The helium recovered may be refined to an intermediate level and then further refined to high purity and recycled to most steps in the manufacturing process.  All recovered helium may be purified only to an intermediate level for supply to the fiber drawing step.  Alternatively, recovered helium may be purified to an intermediate level and recycled to the fiber drawing step while the remainder is further refined to high purity and recycled to most other steps in the manufacturing process.
Patent CA-2212088-A1 (CA)
Inventor: HELGEDAGSRUD PER ARNE
IPC: A62B1/20
Filed: 1996-01-30
Abstract: Glissière (1) d'issue (21) destinée à l'évacuation de personnes, d'animaux ou d'objets.  Cette glissière est constituée d'un fond (6) et de deux bords latéraux (5, 19, 20) disposés de part et d'autre de ce fond (6) en formant un angle par rapport à lui.  Elle comprend plusieurs sections contiguës (2, 3, 4, 12, 15) reliées les unes aux autres de manière à pouvoir pivoter l'une par rapport à l'autre autour d'articulations simples (11, 17, 17', 18, 18').  Lorsque cette glissière est en position repliée, ces sections (2, 3, 4, 12, 15) sont imbriquées les unes dans les autres.
Patent CA-2213666-A1 (CA)
Title: Flavored cooking oil having reduced room aroma
Inventor: VOLKER DAVID ALAN
IPC: A23L27/00
Filed: 1996-02-20
Abstract: Disclosed are flavored oils for use in deep frying, stir-frying and marinating, which, when heated, exhibit reduced aroma. The flavored oils consist essentially of an edible oil, a flavoring agent and a polyethylene sorbitan monoester.
Patent CA-2216127-A1 (CA)
Inventor: BENDIG JUERGEN
IPC: H01J9/227
Filed: 1997-01-21
Abstract: The invention concerns a black matrix in colour picture tubes, a positive photoresist composition, an agent for protecting a black matrix and a method of producing the latter. The object of the invention is to provide a black matrix which is produced by means of a positive photoresist composition, permits good structuring ability between exposed and unexposed regions, and reduces the method of producing the black matrix to a small number of technological steps. This object is achieved by obtaining a black matrix which consists of a light-absorbent matrix and can be produced from a positive photoresist composition consisting of a suspension which contains one or a plurality of compounds which indirectly or directly release gaseous compounds under the effect of light, a black pigment and suspension-stabilizing additives which enhance wetting and/or render the solution adhesive. The object is further achieved by obtaining an agent for protecting the light-absorbent matrix, which agent can be produced from a negative photoresist composition comprising a water-soluble organic polymer, a cross-linking actinic component, an alkylsilicate and water, said protecting agent having a pH of between 6 and 7.5.
Patent CA-2217566-A1 (CA)
Title: Oxygen producing bandage
Inventor: SCHERSON DANIEL A
IPC: A61F13/00
Filed: 1996-04-10
Abstract: A portable, self-contained device is described for the topical application of oxygen to promote the healing of skin wounds. The device is comprised of wound dressing (66) that incorporates an electrochemical, chemical, or thermal means of generating high purity oxygen (10, 14, 18). The device can regulate the supply of oxygen to an area above the wound at various concentrations, pressures and dosages. The device is driven by a built-in or accessory power source. Ambient air is brought into contact with a gas permeable cathode.  Oxygen present in the air is reduced at the cathode to negative ions (i.e., peroxide, super-oxide or hydroxyl ions) and/or their unprotonic and protonic neutral species. One or more of these species diffuse through an electrolyte and are then oxidized at a gas permeable anode to produce a high concentration of oxygen directly above the wound, oxygen can also be depleted from that same area by reversing the polarity of the power source (50) allowing the supply of oxygen to the wound to be modulated, thereby controlling the rate of healing.
Patent CA-2219238-A1 (CA)
Inventor: NELSON JAMES KELLOGG
IPC: F23D14/26
Filed: 1997-10-23
Abstract: A gas burner assembly for connection to a gas source includes a burner body having a sidewall and a main gas conduit. The burner body further includes a number of primary burner ports disposed within the sidewall, each for supporting a respective main flame, and a simmer flame port disposed within the sidewall adjacent to the primary burner ports for supporting a simmer flame. Additionally, a main fuel chamber is disposed within the burner body to provide fuel to the primary burner ports, and a stability chamber is disposed within the burner body to channel fuel to the simmer flame port. In one configuration, the stability chamber has one or more stability inlets proximate the burner throat which provide the stability chamber with fuel by utilizing the static pressure associated with each stability inlet. In another configuration, the stability chamber has a small feed hole located proximate the burner throat of the main gas conduit. Each configuration creates a comparatively large pressure drop across the stability chamber during fuel flow due to the positioning of the stability inlets or the feed hole proximate the burner throat, thereby reducing the sensitivity of the simmer flame to pressure disturbances.
Patent CA-2221145-A1 (CA)
Title: Self-emulsifying formulations of lipophilic drugs
Inventor: MCCHESNEY-HARRIS LISA L
IPC: A61K9/48
Filed: 1996-05-17
Abstract: Self-emulsifying pharmaceutical pre-concentrate compositions comprising: (a) a lipophilic medicinal compound, (b) d-alpha-tocopheryl polyethylene glycol 1000 succinate (TPGS), and (c) a lipophilic phase as well as pharmaceutical compositions comprising such pre-concentrates in combination with a sufficient amount of water to produce a stable emulsion.
Patent CA-2221372-A1 (CA)
Title: Ice thickness detector
Inventor: RAUCKHORST RICHARD L III
IPC: B64D15/20
Filed: 1997-11-18
Abstract: An ice detector includes a pair of electrodes connected by a pair of leads to a control unit which measures the admittance between leads to thereby sense and detect the presence of ice and other contaminants formed on top thereof utilizing a detection circuit.  The electrodes are integrated into patch which can be placed at different locations on an aircraft.
Patent CA-2221431-A1 (CA)
Inventor: KNEISLEY JOEL D
IPC: B23K9/10
Filed: 1997-11-19
Abstract: Welding apparatus having selectively operable local and remote current setting devices for selecting and controlling the welding current to be applied across an electrode and workpiece at a welding are includes a control circuit for sensing the connection and disconnection of the remote current setting device thereto and respectively setting a remote and local mode of welding current control.
Patent CA-2225279-A1 (CA)
Title: Energy guiding chain
Inventor: BLASE GUENTER
IPC: F16G13/16
Filed: 1997-04-08
Abstract: An energy guiding chain for guiding hoses and the like between two connecting points, the position of at least one of which can be changed, comprises several chain links comprising side elements and cross-members connected to each other in articulated fashion, where the pivoting of adjacent chain links relative to each other is limited by corresponding stops(14) with contact surfaces (15) arranged on the chain links. In order to allow a higher traversing speed and reduce the noise emission of the chain, the chain links are provided with means for reducing the angling speed of adjacent chain links relative to each other.
Patent CA-2226939-A1 (CA)
Inventor: HAGA JOHAN
IPC: F25B3/00
Filed: 1996-07-12
Abstract: A heat pump with a closed cooling medium circuit for transport of heat from one air flow to another, comprises an evaporator (27) provided in one air flow for evaporation of a cooling medium, a compressor for compression of the vaporiform cooling medium, a condenser (28) provided in the other air flow for condensation of the cooling medium, and a return system for condensed cooling medium from the condenser (28) to the evaporator (27). The evaporator (27), the compressor and the condenser (28) are located in a fan casing (32) and arranged to rotate about a common shaft (1), with the compressor in the middle. The compressor works according to the liquid ring principle and comprises a rotating compressor housing (17), an intermediate shaft (2) mounted eccentrically on the outside of the shaft and one or more free-running impellers (3A, 3B), thus causing the compressor housing (17) to transfer rotary energy to the impellers via the liquid ring during operation. The evaporator (27) and/or the condenser (28) each comprises an outer housing which is equipped with surfaces which project into the air flow, with the result that the evaporator (27) and/or the condenser (28) act as fans.
Patent CA-2227267-A1 (CA)
Inventor: PROPP MICHAEL B
IPC: H04N21/61
Filed: 1996-07-17
Abstract: L'invention concerne un système de communication numérique par réseau de câblage non téléphonique (220) (par exemple, réseau de distribution de lignes de transport d'énergie préexistant) permettant de fournir à des utilisateurs (210) les services d'une ligne téléphonique. Le service de ligne téléphonique est "à la demande" dans le sens que n'importe quel utilisateur peut brancher un appareil téléphonique sur le câblage électrique (220) et obtenir instantanément une ligne téléphonique. Ce système permet aux personnes qui ne désirent pas payer une ligne privée de bénéficier de services téléphoniques primaires et secondaires. Pour ces deux types de services, le numéro de téléphone associé à la ligne peut être attribué par la compagnie de téléphone ou l'entreprise publique, ou bien être un numéro unique par raccordement fixe de chaque téléphone à connecter sur le câblage électrique (220). Un identificateur, suffixe par exemple, permettant d'acheminer les appels destinés aux ou provenant des lignes téléphoniques supplémentaires "à la demande", peut être attribué à ces lignes.
Patent CA-2228313-A1 (CA)
Inventor: SALTHOUSE PETER WILLIAM
IPC: C09J7/02
Filed: 1996-07-29
Abstract: A pressure sensitive adhesive tape comprises a tape body coated on one side thereof with an adhesive. The tape body comprises the following components:  (a) from 40 % to 85 % wt. of at least one copolymer of olefin with vinyl- or acrylic esters; (b) from 0 % to 20 % wt. of low density (less than 0.9 g cm-3) polyethylene; (c) from 20 % to 55 % wt. of inorganic filler and/or flame retardant consisting of any of the following either alone or in combination:  aluminum trihydrate filler, zinc borate, an organic polyphosphate, polyammonium phosphate or magnesium hydroxide; and (d) from 0 % to 5 % wt. of a silane coupling agent.
Patent CA-2228524-A1 (CA)
Title: Quinazolinone-containing pharmaceutical compositions for prevention of neovascularization and for treating human malignancies
Inventor: PINES MARK
IPC: A61K31/517
Filed: 1996-08-12
Abstract: The invention provides a composition for attenuating neovasculatization and treating human malignancies, including a pharmaceutically effective amount of a compound of formula (I), wherein n = 1 or 2; R1 is a member of the group consisting of hydrogen, halogen, nitro, benzo, lower alkyl, phenyl and lower alkoxy; R2 is a member of the group consisting of hydroxy, acetoxy and lower alkoxy; and R3 is a member of the group consisting of hydrogen and lower alkenoxy-carbonyl; as active ingredient therein, in combination with a pharmaceutically acceptable carrier and the physiologically acceptable salts thereof.   (see formula I)
Patent CA-2230156-A1 (CA)
Inventor: SHIMOYOSHI OSAMU
IPC: H03M7/30
Filed: 1998-02-23
Abstract: In case codes of old and new standards are recorded on the same recording medium, it is desirable that the signals of the old standard can be reproduced by an old standard accommodating reproducing device, while both signals can be reproduced by the new standard accommodating reproducing device such as to avoid lowering of the signal quality. To this end, if multi-channel signals are recorded in terms of a frame the size of which cannot be controlled, a second encoding circuit encodes signals of a channel reproduced by the old standard accommodating reproducing device, while a first encoding circuit encodes the signals of a channel reproduced by an old standard accommodating reproducing device with a number of bits smaller than the maximum number of bits that can be allocated to that frame. A codestring generating circuit arrays a codestring encoded by the second encoding circuit in a void area of a frame provided by encoding in the first encoding circuit.
Patent CA-2231567-A1 (CA)
Inventor: MAGUIRE WILLIAM H
IPC: E02D29/02
Filed: 1998-03-10
Abstract: Shaped concrete blocks are provided, each having generally parallel top and bottom surfaces, a shaped front face (adapted to be exposed as the wall element), side walls and a rear wall. The top surface of each block is provided with rows of projecting knobs, while the bottom surface of each block is provided wtih shallow parallel grooves. In this manner, successive blocks may be stacked on top of one another with the knobs of one block engaging the grooves of another block.
Patent CA-2232058-A1 (CA)
Inventor: PIKE STEVEN DEREK
IPC: G01N29/36
Filed: 1996-09-19
Abstract: The present invention is a device that simulates both a radioactive and/or hazardous chemical source and a radioactivity and/or hazardous chemical detector, to train individuals in the correct use of a real radioactivity and/or hazardous chemical detector. A passive radio identification device (PRID) is used to simulate the hazardous material source.      The PRID includes a tuned circuit, an energy storage capacitor, a transmitter unit, a microcomputer and a magnet. The simulated detector includes a hall effect device to detect the magnet. When the magnet is detected, (when a trainee moves the simulated detector close to the PRID), the simulated detector outputs a 50ms RF burst. The RF pulse resonates the tuned circuit contained within the PRID, and a voltage is developed across the tuned circuit. This voltage charges the energy storage capacitor through a diode. When the capacitor is charged, the microcomputer is activated by the power supplied by the storage capacitor. Once activated, the microcomputer waits for completion of the 50ms pulse, and then activates the transmitter. The transmitter then transmits a signal that identifies the type of contamination to the simulated detector. The transmitter uses the tuned circuit as an antenna.
Patent CA-2234388-A1 (CA)
Title: A gas appliance for heating fluids
Inventor: SEBASTIANI ENRICO
IPC: F23D14/58
Filed: 1996-10-16
Abstract: The invention relates to an appliance for heating fluids which includes a combustion chamber (20) in which the head (21c) of the burner with flame openings (39) is juxtaposed with a wall (21a, 21b) which separates the chamber from the lower portion of the appliance; in the event of flammable substances bieng present in the environment surrounding the appliance, these can enter the combustion chamber only through the flame openings (39) and similar slots (50) formed in the wall (21a, 21b). This enables the burner flames and/or the ignition element (25) to ignite these substances as soon as they enter the chamber (20), the flames being detached from said wall, thus preventing the formation of unwanted explosive or flammable mixtures in the chamber (20) and any flash back, thereby contributing to the safety of the appliance.