baber/WOPTO huggingface dataset:
Patent CA-2015414-A1 (CA)
Inventor: LAPORTE ERIC
IPC: H04B1/713
Filed: 1990-04-25
Abstract: The transmitter in a power line communications system applies to the power line encoded logical-one and  logical-zero  bit  signals  consisting  of  signals formed  respectively  of  predetermined  different sequences of frequencies.  The receiver, coupled to the power line,  includes a first homodyne,  non-coherent, quadratic demodulator for demodulating the logical-one bits  and a  second for demodulating  the logical-zero bits.  The first demodulator produces, locally, and in first  and  second  channels,  respectively,  a  first reference signal that is a replica of the logical-one bit  sequence  of  frequencies  and  a  second reference signal that is the replica in quadrature.  The second demodulator produces, locally, and in third and fourth channels, respectively, corresponding third and fourth reference signals for the logical-zero bit sequence. Each of  the four reference signals  is applied to a corresponding analog multiplier for multiplication by the input signal in each channel.  The output of each multiplier is applied to a low pass filter that passes only the dc component of the product signal which in turn is squared.  The resultant signals in the first and second channels are summed to provide a first output signal, and the resultant signals in the third and  fourth  channels  are  summed to provide a second output signal.   Compensation circuitry cancels error voltages developed in the demodulation channels as a result of component offset, and the two output signals are integrated over a bit period and then compared to each other to detect a logical-one or logical-zero bit.
Patent CA-2017105-A1 (CA)
IPC: G02B6/34
Filed: 1990-05-18
Abstract: ABSTRACT OF THE DISCLOSURE      In an optical coupler for dividing or combining lights of different wavelengths,  at  least one wavelength separating filter connector terminal is provided at least one light input and output terminals.          The wavelength separating filter connector comprises first and second optical fibers which are in contact with each other by placing an optical wavelength separating filter film between the first and second optical fibers, so that an isolation is large between separated lights.
Patent CA-2018012-A1 (CA)
Title: Low closure force emi/rfi shielded door
Inventor: JOHANSEN EIVIND
IPC: H01B5/02
Filed: 1990-05-31
Abstract: ABSTRACT OF THE DISCLOSURE          An EMI/RFI shielded door assembly for use in controlling the movement of EMI/RFI in a shielded room or enclosure.  The assembly has an electrically conductive frame defining a generally rectangular opening.  A conductive door stop is formed on the inner surfaces of the top and side members of the frame to form a pocket into which a shielded door may be held when in its closed position.  The threshold of the frame is preferably flat.  A series of cam or drop hinges are used to mount the door to the frame.  The hinges cause the door to be raised or lowered to or from the threshold as it is rotated on the hinges from a closed to an open position and vice versa.  A low closure force gasket, e.g. less than 5 pounds per linear inch preferably formed of a conductive elastomer, is used to fill any gap that may exist between the door and the frame.  Optionally, a rotatable EMI/RFI shielding means mounted in a hollow of the bottom of the door and comprised of a flap or flipper like blade attached to a rotatable rod can be used to seal the gap between the door and the threshold.
Patent CA-2021013-A1 (CA)
Inventor: STARCH MICHAEL S
IPC: C11D3/37
Filed: 1990-07-12
Abstract: A dispersible silicone antifoam composition for providing controlled foaming laundry detergent formulations effective in both the wash and the rinse cycles of a washing machine. The antifoam includes a non-aqueous emulsion of primary and secondary silicone antifoam agents, at least one nonionic silicone surfactant for emulsifying the primary and secondary antifoam agents in a solvent, a first organic surfactant dispersing agent for assisting in dispersing the emulsified primary and secondary antifoam agents in the laundry detergent and a second dispersing agent of a nonionic difunctional block-copolymer terminating in primary hydroxyl groups for further assisting in dispersing the emulsified primary and secondary antifoam agents in the laundry detergent.
Patent CA-2023132-A1 (CA)
Title: Device for facilitating the folding of a raisable curtain
Inventor: KRAEUTLER BERNARD
IPC: A47H5/14
Filed: 1990-08-10
Abstract: A goods-handling door comprises a raisable curtain which folds concertina-like and which is stiffened by reinforcing bars 2 having rings 4 through which lifting straps 3 are passed, which straps are wound onto a top shaft 5. During lifting and while the curtain is folding, it is desirable for the curtain to fold regularly and in a preferred direction.      Flexible and inextensible elements 11 are placed between adjacent bars in order to limit the spacing between the bars, and they are given a structure which facilitates folding in the desired direction.
Patent CA-2024820-A1 (CA)
Title: Infrared drying system
Inventor: TRELEVEN ROBERT E
IPC: F26B13/10
Filed: 1990-09-07
Abstract: INFRARED DRYING SYSTEM               ABSTRACT OF THE DISCLOSURE An  infrared  drying  system  for  monitoring  the temperature,  moisture  content,   or  other  physical property at particular zone positions along the width of a traveling web,  and utilizing a computer control system to energize and control for finite time periods a plurality of infrared lamps for equalizing physical property  and  drying  the  web.    The  infrared  drying system  is particularly  useful  in  the  graphic  arts industry, the coating industry and the paper industry, as well as any other applications requiring physical property  profiling  and  drying  of  the  width  of  a traveling web of material.  The infrared drying system profiles a physical property across the width of the web by a sensor head which travels on a belt supported above  the  web,  and  inputs  the  information  into  a computer  to  generate  signals  corresponding  to  the measured physical property for each particular segment portion along the width of the web above or below a setpoint.     A  control  computer  generates signals corresponding to the particular segment portion of the web and the particular power to be applied to heat that segment portion of the web.   A lamp control computer controls lamps in opposing lamp units,  through power controller signals for energizing individual infrared heating lamps for finite time periods during each power cycle for drying the traveling web.
Patent CA-2025179-A1 (CA)
Title: Nucleic acid probes and methods for detecting cryptococcus neoformans
Inventor: WEISBURG WILLIAM G
IPC: C12Q1/68
Filed: 1990-09-12
Abstract: Abstract Nucleic acid probes are described for detecting yeasts capable of causing cryptococcosis, specifically Cryptococcus neoformans.  The preferred probes are complementary to the ribosomal ribonucleic acid sequences unique to Cryptococcus neoformans, and as such can detect the rRNA, rDNA, or polymerase chain reaction amplification products of these genes.  The detection of the etiological agent of human cryptococcosis, and tests for making a clinical diagnosis of this disease utilizing specific rRNA or rDNA probes are now possible.
Patent CA-2025918-A1 (CA)
Inventor: GUILLEMINOT ODILE
IPC: F25B9/00
Filed: 1990-09-21
Abstract: L'air comprimé entrant est en partie détendu dans une turbine haute pression, puis une partie de l'air ainsi détendu est de nouveau détendue dans une turbine basse pression. La température d'admission de cette dernière est nettement supérieure à celle de la turbine haute pression. Application à la production d'azote liquide et d'oxygène liquide.
Patent CA-2026344-A1 (CA)
Title: Segmented cover system
Inventor: MERLOT VINCENT J JR
IPC: B60J7/06
Filed: 1990-09-27
Abstract: The present invention provides a segmented cover system utilizing a series of cover sections, which can be of any size, and shape, and a series of curved or straight supporting bows to form a cover assembly which allows for the easy replacement of a cover section or a bow without disassembling the entire cover system. The present cover assembly preferably utilizes a series of standard cover sections which are detachably secured to the two adjacent supporting bows. Preferably, the supporting bows are curved and consist of a bow center section and two easily removable bow end sections. The unique design, construction and interaction of the cover sections, the bow center sections and the bow ends enable damaged cover sections and bows to easily be removed and replaced without disassembling or removing the cover system from its location. A drive assembly can be used to extend and retract the segmented cover system of the present invention.
Patent CA-2031375-A1 (CA)
Title: Adjustable diaper
Inventor: QUADRINI GIUSEPPE
IPC: A61F13/15
Filed: 1990-12-03
Abstract: An adjustable diaper is provided with a pair of VELCRO tapes  on the inner and outer surfaces of the upper ledge of the front lap extending along  an adjacent the upper edge thereof.  A strip of cloth is fixed to the upper edge of the front lap and is adapted to cover alternately one or the  other of the above-mentioned VELCRO tapes. The VELCRO tape on the outer  surface of the diaper is used to obtain a larger size diaper while the strip of cloth covers the VELCRO tape on the inner face. For smaller size diaper, the strip of cloth is flipped from the tape on the inner face to the tape on the outer face to uncover the tape on the inner face.  The upper  ledge of the front lap is subsequently folded to  forwardly  expose the tape on the inner face.     The  diaper is size adjustable and the strip of  cloth  prevents the inner VELCRO tape to come in contact tact with the skin.
Patent CA-2032797-A1 (CA)
Inventor: CARR ALBERT A
IPC: A61K31/00
Filed: 1990-12-20
Abstract: The present invention is directed to a new class of piperidinyl medicinal agents of the formula:   (see formula I) wherein X is CO or SO2 which are useful as antithrombotic agents and as serotonin 5HT2 antagonists.
Patent CA-2033494-A1 (CA)
Inventor: KRISHNAKUMAR SUPPAYAN M
IPC: B29C49/00
Filed: 1991-01-02
Abstract: ABSTRACT OF THE DISCLOSURE     This relates to the packaging of a hot liquid product  in  a  container  having  little  resistance to internal vacuum wherein immediately after the container has   been   filled,   the   container   is   internally pressurized and closed.  This particularly relates to an  injection  molded  preform  formed  of  a  suitable polyester resin which is of a configuration related to an  intended  blow  mold  cavity  whereby  the  desired biaxial orientation is obtained in the various portions of  the  resultant container and the wall thickness of the container base is increased so as to prevent undue stress   enlargement   and   creep  at   high   internal pressurization.    Internal   pressurization   on   the order of 40-45 psig is envisioned.
Patent CA-2034295-A1 (CA)
Title: Data processing apparatus with display device
Inventor: INOUE HIROSHI
IPC: G09G5/36
Filed: 1991-01-16
Abstract: On a data processing apparatus comprising a host processor including a multitasking unit in a time sharing manner, and a scheduling unit for scheduling drawing requests to a graphics device from the plurality of user processes and forming a single sequence of commands each associated with each of the drawing requests, a scheduling unit monitors the execution status of drawing commands at the graphics device processor, and reserves the scheduling of the drawing request from the user process until the execution status advances to a predetermined stage.
Patent CA-2034606-A1 (CA)
Inventor: RAYNALD GAGNON
IPC: B63B17/00
Filed: 1991-01-21
Abstract: PRECIS:            Lorsque des chasseurs ou pêcheurs transportent des armes à feu ou cannes à pêche à bord d'une embarcation de type chaloupe ou canot, on sait qu'il est dangereux de laisser l'arme à feu tout simplement appuyée au fond de l'embarcation ou sur un siège de l'embarcation.  De plus, le ballottement de l'embar-cation causé par les vagues font souvent bouger l'arme à feu, ce qui cause des égratignes sur la crosse ou le canon et peut aussi faire déclencher le mécanisme de sécurité.  Dans la présente invention, les chasseurs ou pêcheurs peuvent remiser l'arme ou la canne à pêche sur le rebord de l'embarcation, évitant ainsi des bris et des accidents causés par l'arme à feu elle-même ou la personne qui peut s'accrocher les pieds sur l'arme ou la canne à pêche et ainsi tomber de l'embarcation en voulant y débarquer.
Patent CA-2034918-A1 (CA)
Title: Rotational member of a centrifuge
Inventor: SCHMIDT GERHARD
IPC: B04B7/16
Filed: 1991-01-25
Abstract: ABSTRACT OF THE DISCLOSURE An improvement in a rotational member of a centrifuge. The  rotational  member  has  a  top,  an open bottom,  and a circumferential frame which extends between the top and the bottom.  A screen is mounted on the circumferential frame.  A deflector is centrally positioned adjacent the top of the rotational member such that liquids flowing into the hollow central cavity of the rotational member are deflected by the deflector toward the screen.  Solids are retained within the hollow central cavity by the screen and liquids pass through the screen striking sidewalls of a containment housing and flowing down the side walls to a liquids outlet.  The solids pass by force of gravity along the screen to the open bottom of the rotational member which serves as a solids outlet.
Patent CA-2035741-A1 (CA)
Title: Edge sealing devices for membrane roof
Inventor: KIRBY RALPH
IPC: E04D13/15
Filed: 1991-02-05
Abstract: EDGE SEALING DEVICE FOR MEMBRANE ROOF            ABSTRACT OF THE DISCLOSURE   An assembly is provided for forming  a roof edge on a  building structure when  the  assembly is  installed  thereon, with  the  building structure having a horizontal roof  surface and a vertical face  surface, with a sheet-like  roofing material extending  along the horizontal  roof surface and overlapping a portion of the vertical face surface.  The roof edge assembly includes a relatively thin, but relatively rigid,  clamping member, a  portion  of which  has  a generally  L-shaped  lateral  cross-sectional shape. The horizontal leg of the clamping member is adapted to engage the horizontal roof surface, and the vertical leg is adapted to engage the vertical face portion of the building structure, with the sheet-like roofing material clamped between the building structure and the clamping member.  The horizontal leg includes an upper edge portion configured so as to be spaced away from the horizontal roof surface, and similarly the vertical leg includes a lower edge portion configured so as to be spaced away from the vertical face of the roof.
Patent CA-2039857-A1 (CA)
Title: Process for producing epoxyalcohols of high optical purity
Inventor: PO-SUM SHUM WILFRED
IPC: C12N9/20
Filed: 1991-04-05
Abstract: ABSTRACT OF THE DISCLOSURE      A process for enriching or improving the optical purity of an asymmetric epoxidation reaction mixture is provided wherein the chiral epoxy alcohol enantiomer present in minor amounts is effectively separated from the predominant chiral epoxy alcohol enantiomer.  The minor enantiomer is converted to an epoxy ester by stereoselective transesterification using a carboxylic acid derivative such as an enol ester and a lipase enzyme.  The desired major chiral epoxy alcohol enantiomer is then recovered or reacted in situ to form a chiral epoxy alcohol derivative.
Patent CA-2040936-A1 (CA)
Inventor: BRADLEY PIERO J
IPC: G02F1/35
Filed: 1991-04-22
Abstract: An   optical   polarization   modulator   has   an interferometric structure including, in at least one of two branches, a device causing the signal fractions in the two branches to assume an amplitude ratio depending on the value taken by a control signal, and a desired relative phase.   In one embodiment, the amplitude modulators are multiple quantum well asymmetric cavity Fabry-Perot devices biased in a complementary manner by binary signals, the levels of which are associated with voltage values such as to bring the devices to maximum absorption or maximum reflectivity conditions respectively; thus for each signal level only one of the two cavities reflects part of the received radiation.  The optical signal to be modulated is applied to one of the cavities with a first polarization state that is  maintained in the reflected radiation, and to the other cavity in a polarization state resulting in a second state of polarization in the reflected radiation.
Patent CA-2045488-A1 (CA)
Inventor: CHAVKIN LEONARD
IPC: A61K47/02
Filed: 1990-01-02
Abstract: 2045488 9007343 PCTABS00001 Orally ingestible liquid compositions for suspending therein orally administrable pharmaceutically active compositions comprising triglycerides, propylene glycol ester, or monoacetylated glycerides of medium chain length alkanoic acids, polyglycerol esters, and colloidal silicon dioxide.
Patent CA-2045595-A1 (CA)
Title: Breath sampler
Inventor: GLASER ROBERT A
IPC: G01N1/40
Filed: 1990-02-02
Abstract: An apparatus (200) for sampling volumetric quantities of human exhaled breath has three conduits and may be provided in a Y- or T-shaped configuration. The free end of conduits (262) is adapted to connect with the mouth of the subject being tested. Another of the conduits (214) is adapted to pass air to the subject, this conduit being provided with a suitable filtering mechanism (230) such as a charcoal inhalation canister, and an inlet check valve (215). The third (218) of the three conduits supports an appropriate sampling canister (250) for receiving exhaled breath from the subject, and this conduit is also provided with a one way check valve (217).
Patent CA-2045708-A1 (CA)
Inventor: WILEN ALLAN S
IPC: B32B27/16
Filed: 1991-06-26
Abstract: ABSTRACT "MICROWAVEABLE PACKAGING COMPOSITIONS"      Microwaveable packing compositions exhibiting improved temperature control are provided.  These compositions comprise a dielectric substrate having at least a portion of at least one of its surfaces coated with a matrix composition containing susceptor particles as well as particles of a blocking agent selected from the group consisting of calcium salts, zinc salts, zinc oxide, lithopone, silica and titanium dioxide.  Also disclosed is a microwaveable ink composition useful for the preparation of such packaging compositions as well as a process for manufacturing such packaging compositions.
Patent CA-2048770-A1 (CA)
IPC: E04D13/068
Filed: 1991-08-08
Abstract: A rain gutter assembly including an elongated trough-like rain gutter having a rear wall, a trough and a leaf guard integrally connected by a pair of living hinges, grommets adapted to house a fastener for supporting the rain gutter, and a connector for sealingly connecting a pair of closely-spaced, aligned rain gutters.
Patent CA-2050607-A1 (CA)
Inventor: PARISI GIUSEPPE
IPC: C03C25/1065
Filed: 1991-09-04
Abstract: Apparatus  for  measuring  and  controlling  the eccentricity of a coloured coating layer on optical fibres allows continuous on-line measurement of the eccentricity of the coloured layer and high-speed control of apparatus used for its deposition in order to make any necessary corrections.  The measurement is carried out by launching onto the fibre monochromatic light beams of a wavelength in the near infrared and analyzing the resulting interference patterns obtained by means of TV cameras sensitive to such wavelengths.
Patent CA-2053296-A1 (CA)
Title: Hot gas defrost refrigeration system
Inventor: LAMMERT PAUL F
IPC: F25B13/00
Filed: 1991-02-25
Abstract: A hot gas defrost refrigeration system has a compressor (10), a condenser (20), a receiver (60), an evaporator (40), interconnected by fluid passage means and incorporating valve means to cause refrigerant to flow sequentially through the compressor, condenser, receiver and evaporator to the compressor during the refrigeration cycle. The refrigeration system includes a superheater (70) and defrost passage means (126, 136, 139, 106, 140, 142, 128), including valve means (96, 138, 88), connecting the evaporator outlet (52) to the condenser inlet (26) and connecting the condenser outlet (28) through the superheater (70) to the compressor inlet (12), bypassing the receiver (60). The passage means connecting the compressor outlet (14) with the evaporator inlet (48) includes a superheat passage (78) in heat exchange relationship with the superheater (70) for transferring heat from the refrigerant discharged from the compressor outlet (14) to the refrigerant delivered to the compressor inlet (12) during the defrost cycle. During the defrost cycle, refrigerant flows sequentially from the compressor (10) to the evaporator (40), then through the defrost passage means (126, 136, 139) to the condenser (20) and then to the superheater (76) to the compressor (10). The condenser (20) is utilized as a reevaporator during defrost and the superheater exchanges heat between compressor inlet (12) and suction refrigerant to enhance system operation during the defrost cycle.
Patent CA-2054950-A1 (CA)
Title: Slump retaining agent
Inventor: OGAWA HIDEO
IPC: C08L35/08
Filed: 1991-11-05
Abstract: A polymeric composition which reduces the loss of flowability of a cementitious composition comprises at least one polymer as a salt thereof having the form of a copolymer of (a) a maleic anhydride half-ester with a compound of the formula I      RO(AO)m H (I) where R is a C1-20alkyl group, A is a C2-4alkylene group and m is an integer from 2-16; and (b) a monomer having the formula II      CH2=CHCH2-(OA)n OR (II) where n is an integer from 1-90.      In a preferred embodiment, there is present a polycarboxylate salt which is at least one polymer or copolymer comprising at least one of the monomers acrylic acid, methacrylic acid, maleic anhydride, maleic acid and maleic acid monoester, polymer and polycarboxylate salt being blended in the proportion of 0.1-10 parts of weight of polymer per part of polycarboxylate salt.      Cementitious compositions such as concrete in which such polymeric compositions are included maintain their slump properties.
Patent CA-2054996-A1 (CA)
Title: In-line folded microwave filter
Inventor: SLEIGH PHILIP D
IPC: H01P1/208
Filed: 1991-11-06
Abstract: Abstract An in-line folded microwave filter comprises a plurality of resonant cavities connected in a series between an input and an output at opposite ends of the filter.   The resonant cavities are arranged in two parallel sub-series with the signal path proceeding from the input to a first cavity in one sub-series, then to a first cavity in the second sub-series, then to a second cavity in the second sub-series, then to a second cavity in the first sub-series, and so on through the cavities up to the output.
Patent CA-2057944-A1 (CA)
Inventor: PONS PIERRETTE
IPC: C04B35/589
Filed: 1991-12-18
Abstract: L'invention concerne des polysilazanes réticulés, caractérisés en ce qu'ils sont constitués par une pluralité de motifs de formule (I): (I) réunis par au moins un pont de formule = Al X entre les atomes d'azote desdits motifs, les valences disponibles des atomes de silicium ou d'azote pouvant porter un atome d'hydrogène, un radical alkyle ayant de 1 à 6 atomes de carbone, un radical vinyle ou allyle, un radical cyclohexyle, un radical aryle, alkylaryle ou aralkyle ayant jusqu'à 18 atomes de carbone, le symbole X représentant un groupement -NHZ dans lequel Z représente un atome d'hydrogène ou un métal ou métalloïde, X pouvant également représenter Si ?. Ces produits réticulés présentent un rendement élevé en céramique après pyrolyse. L'invention concerne également un procédé de préparation des polysilazanes réticulés, des compositions de polysilazanes réticulables et des matériaux céramiques.