baber/WOPTO huggingface dataset:
Patent CA-2011319-C (CA)
Title: Packing container for liquid, especially pressurized contents
Inventor: BJORCK BENGT
IPC: B65D5/74
Filed: 1990-03-02
Granted: 1998-09-15
Abstract: A packing container comprising an end wall (3) and an emptying opening (4) incorporated in the end wall which is covered by means of a cover strip (5) applied detachably to the outside of the end wall.  The cover strip (5) as well as the end wall (3) consist of a plastic-coated metallic material and are attached to one another along a sealing joint formed by surface fusion around the whole emptying opening .
Patent CA-2012969-C (CA)
Title: Magnetic reproducing head amplifier
Inventor: IWAMURA SOICHI
IPC: H03F1/34
Filed: 1990-03-23
Granted: 1994-03-08
Abstract: ABSTRACT OF THE DISCLOSURE    A magnetic reproducing head amplifier according to the present invention comprises a differential amplifier referred to as one of these three types: a balanced input type, a balanced output type, or a balanced input/output type.   The  amplifier  comprises  at  least  one  positive feedback circuit for passing a positive feedback current to the differential amplifier and at least one negative feedback circuits for passing a negative feedback current to the same, and is configured so that a positive feedback and a negative feedback are simultaneously performed by the positive  feedback circuit  as well  as the negative feedback circuit.  A resonance peak characteristic at the input part of the differential amplifier is dumped by the negative  feedback  current,  and  therefore  a  frequency characteristic as well as a group delay characteristic of the   output  of   the  differential   amplifier  becomes flattened.   Moreover,  the use of  the positive feedback current from the positive feedback circuit permits  the charging  current  from  the  signal  source  to  the  input capacitance of the differential amplifier to be reduced, that is to say, an effective input capacitance is reduced, and thereby a resonance frequency at the input part of the differential amplifier can be shifted to the vicinity of the upper limit of the transmission band.  Consequently, a stable  amplification  operation can be  achieved  for  FM carriers for carrying wide frequency signals, such as HDTV signals.
Patent CA-2016981-C (CA)
Title: Temperature control device and reaction vessel
Inventor: DEVANEY MARK J JR
IPC: B01L3/00
Filed: 1990-05-17
Granted: 1994-09-27
Abstract: TEMPERATURE CONTROL DEVICE AND REACTION VESSEL                        ABSTRACT         A combination is provided of a reaction vessel and apparatus for processing it.  Preferably, the latter features a temperature control device comprising two surfaces to contact a reaction vessel sandwiched between them, a heater element being disposed of one side of one of the surfaces, a cavity being provided at the heater element, and pressure means for delivering cooling gas to the cavity and the heater element and for removing the air after it has cooled the heater element.  Most preferably, there is further included means for providing relative movement between the control device and a reaction vessel so sandwiched between the two surfaces.
Patent CA-2021592-C (CA)
Title: Fibre optic waveguide elements
Inventor: SHAHIDI FERRYDON
IPC: G02B6/00
Filed: 1990-07-19
Granted: 1995-01-17
Abstract: A fibre optic element is disclosed capable of a wide range of uses,  including illumination,  lighted fixed or variable signs, and decorative applications. The element is formed in one piece of transparent material and has one or more generally planar areas with integral extensions from one or opposite sides formed as a number of separable filaments such that the filaments can be bunched to form a flexible light conducting cable. Except for light escape zones via which light can escape from the planar area or areas, and the distal ends of the filaments, the element is covered by an internally  reflective  cladding  layer  such  as  to  enable propagation of light through the filaments from the light source and in the plane of the planar areas, which rather than being strictly planar can be curved into various shapes. The light escape  zones may be  formed by replacing the cladding layer in those zones by a transparent layer of higher refractive index than the material of the element, or by using a diffusive or phosphorescent layer to divert or reradiate light out of the plane of the element.
Patent CA-2024382-C (CA)
Title: Method and apparatus for finding the best splits in a decision tree for a language model for a speech recognizer
Inventor: NADAS ARTHUR
IPC: G06T7/00
Filed: 1990-08-31
Granted: 1994-08-02
Abstract: ABSTRACT OF THE DISCLOSURE            A method and apparatus for finding the best or near best binary classification of a set of observed events, according to a predictor feature X so as to minimize the uncertainty in the value of a category feature Y.  Each feature has three or more possible values.  First, the predictor feature value and the category feature value of each event is measured.  From the measured predictor feature values, the joint probabilities of each category feature value and each predictor feature value are estimated.  The events are then split, arbitrarily, into two sets of predictor feature values.  From the estimated joint probabilities, the conditional probability of an event falling into one set of predictor feature values is calculated for each category feature value.  A number of pairs of sets of category feature values are then defined where each set SYj contains only those category feature values having the j lowest values of the conditional probability.  From among these pairs of sets, an optimum pair is found having the lowest uncertainty in the value of the predictor feature.            From the optimum sets of category feature values, the conditional probability that an event falls within one set of category feature values; is calculated for each predictor feature value.  A number of pairs of sets of predictor feature values are defined where each set SXi(t + 1) contains only those predictor feature values having the i lowest values of the conditional probability.  From among the sets SXi a pair of sets is found having the lowest uncertainty in the value of the category feature.  An event is then classified according to whether its predictor feature value is a member of the set of optimal predictor feature values.
Patent CA-2024693-C (CA)
Title: Articulated ski boot allowing physiological ankle movements
Inventor: RHENTER JEAN-LUC
IPC: A43B5/04
Filed: 1990-09-05
Granted: 2001-07-10
Abstract: The application describes a ski boot comprising an articulating device mounted between the leg which also supports the astragalus and the swell to allow relative angular deflection of the shell and of the leg accommodating, at least in part, the eversion and inversion movements permitted by the sub-astragalus ankle joint.
Patent CA-2028138-C (CA)
Inventor: PESENDORFER FRITZ
IPC: A24C5/352
Filed: 1990-03-01
Granted: 2000-01-18
Abstract: 2028138 9009925 PCTABS00002 Method and apparatus for compiling deformable, substantially cylindrical bodies and for packing them, comprising vibrating said bodies being positioned at pile delivery substantially parallel adjacent and superposed to each other and being aligned in at least one row of parallelly positioned bodies adjacent to each other, whereafter this row is loaded into a substantially parallelepipedic magazine (6) that is substantially spaceless charged with bodies and thereafter transferred to a magazine discharge station (E) and positioned below a substantially similar transfer magazine (12), into which the bodies are transferred and which is thereafter transversely shifted above a reception space (14) for said bodies into which the bodies enter by gravity and are divided into streams moving downwardly into the area of two or more adjacent discharge devices (17) from which the bodies being compiled to predetermined groups are conveyed at the same time into cups of a cup conveyer.
Patent CA-2028229-C (CA)
Title: Boite a oeufs
Inventor: LEMAIRE REAL
IPC: B65D85/32
Filed: 1990-10-22
Granted: 2003-01-07
Abstract: Une boîte à oeufs comprenant un premier contenant ayant au moins un compartiment, lequel définit une cavité, un fond inférieur, et une ouverture de compartiment supérieure, ce contenant comportant aussi un rebord de périphérie entourant une grande ouverture; un second contenant ayant un nombre de compartiments identiques au premier compartiment et de construction sensiblement identique à celui-ci; et un troisième contenant ayant un fond, des parois de côté ayant un rebord de périphérie et une grande ouverture légèrement plus grande que les grandes ouvertures correspondantes des premier et second contenants. Les second et troisième contenants sont pivotés à deux côtés opposés du premier contenant par leurs rebords de périphérie. Le second contenant est ainsi destiné à se refermer sur le premier contenant sur leurs rebords; et le troisième contenant est destiné à se refermer contre les fonds du second contenant, pour ainsi définir une position fermée de la boîte à oeufs.
Patent CA-2028247-C (CA)
Title: Modular unscrewing mold apparatus
Inventor: FOX ALTON L
IPC: B29C45/26
Filed: 1990-10-25
Granted: 1995-01-24
Abstract: ABSTRACT            MODULAR UNSCREWING MOLD APPARATUS A modular unscrewing injection mold and core assembly therefor includes a mold base, a core receiving opening extending through the mold base, the core assembly being removably mounted in the core receiving opening and including first and second core shells that may be secured together to receive a rotating core therebetween; a mold core rotatably mounted between the shells; a pinion gear formed on the mold core for being driven by a rack in the mold base, for rotating the mold core; the core assembly being releasably secured in the base.
Patent CA-2034216-C (CA)
Title: Magnetic shield
Inventor: KOSUGE SHIGEYOSHI
IPC: C23C30/00
Filed: 1991-01-15
Granted: 1992-12-29
Abstract: MAGNETIC SHIELD          ABSTRACT OF THE DISCLOSURE      A magnetic shield which comprises: a plurality of metallic cylinders connected to each other in the axial direction thereof, each of the plurality of cylinders having at one end thereof an engaging section for receiving an end of an adjacent metallic cylinder to be connected thereto; and a film of a composite oxide superconducting material containing a CuxOy-radical, formed on the entire inner surface of each of the plurality of cylinders, including the inner surface of the engaging section thereof.  The above-mentioned magnetic shield can easily be scaled up and has a high magnetic shielding effect.
Patent CA-2041924-C (CA)
Title: Method for determining the transmission quality of a home traffic connection in a mobile radio system
Inventor: BORG LARS UNO
IPC: H04B7/26
Filed: 1991-05-07
Granted: 2001-07-10
Abstract: A base station (BS1) in a mobile radio system has connection in a first cell (1) with a mobile station (MS1) on a two-way channel (K1) having two carrier frequencies. A base station (BS2) and a mobile station (MS2) in a second cell (2) remote from the first cell are mutually connected on the channel (K1) disturbing the connection in the first cell (1) through signals (Fl, R1). The combined signal strength of the disturbing (F1, R1) and the home connection (K1) is measured. The signal strength of solely the disturbing connection (F1, R1) is also measured, the carrier frequency of home connection being closed down. The quotient between these signal strengths is a measure of connection quality.      The stations (MS1,BS1) may include means for closing down their respective carrier frequencies when no information is transmitted, the receiving station then measuring the disturbing signal strength. In time-shared systems, the disturbing signal can be measured during time slots which belong to connections other than. the home connection.
Patent CA-2044498-C (CA)
Title: Process for the preparation of dialkyl, pyridine-2,3-dicarboxylates and derivatives thereof from dialkyl dichlorosuccinate
Inventor: CEVASCO ALBERT ANTHONY
IPC: C07D213/803
Filed: 1991-06-13
Granted: 2002-06-11
Abstract: There is provided a process for the preparation of substituted and unsubstituted-2,3-pyridinedicarboxylate compounds by reacting a dialkyl dichlorosuccinate with a dehydrohalogenating agent, an ammonia source and an appropriately substituted .alpha.,.beta.-unsaturated aldehyde or ketone.
Patent CA-2046200-C (CA)
Title: Method and apparatus for debagging dust-containing or hazardous materials
Inventor: MIKKELSEN ALAN R
IPC: B65B69/00
Filed: 1991-07-04
Granted: 1995-02-07
Abstract: A method and apparatus for removing dust-containing or hazardous material from bags includes a vertical bag feeding chute having one or more vertically disposed knife blades fixed (no moving mechanical parts) in the chute to slice open the bag as it falls through the chute.  The sliced bag is caught in a downwardly angled perforated basket disposed below the bag feeding chute where an operator operating through a glove box removes solid material from the interior of the sliced bag after most of the bag contents have fallen through the perforated receiving basket and into a mixing tank.  The apparatus and method are particularly useful for debagging acrylamide monomer in the production of polyacrylamide homopolymers and copolymers.
Patent CA-2049491-C (CA)
Title: Projection cathode-ray tube with uniform optical multiple interference film
Inventor: IWASAKI YASUO
IPC: G02B5/28
Filed: 1991-08-19
Granted: 1996-10-22
Abstract: A projection cathode-ray tube for use in  a projection television  set.   Usually,  three  tubes  for  three  primary colors R, G and B are used.  In the projection cathode-ray tube provided with an optical multiple interference film in order to effectively concentrate light beam emitted from a fluorescent plate onto a screen, the uniformity of the film thickness of the optical multiple interference film affects white uniformity of an image.  By determining a short edge length  /  a long edge length of a face  panel  glass  0.85, .DELTA..lambda.50 is reduced.
Patent CA-2052082-C (CA)
Title: Hexitol derivatives
Inventor: SUZUKI FUMIO
IPC: A61K8/00
Filed: 1991-09-26
Granted: 1997-05-27
Abstract: A hexitol derivative represented by formula (I)          (I) wherein R represents hydrogen, unsubstituted or lower alkyl-substituted cycloalkyl, lower alkenyl, lower alkoxy, lower alkanoyl, piperidyl or       wherein each of m and n independently represents an integer of 0 to 3; each of X, Y and Z independently represents hydrogen, lower alkyl, lower alkoxy, lower alkanoyl, lower alkanoyloxy, hydroxyl, halogen or nitro or a pharmaceutically acceptable salt thereof.
Patent CA-2052964-C (CA)
Inventor: TANAKA TOSHIHIRO
IPC: B29C51/26
Filed: 1991-10-08
Granted: 1999-03-16
Abstract: A method of manufacturing three-dimensional parts using sheets of a thermoplastic resin high-performance fiber-reinforced composite material includes the steps of supplying the sheet of the high-performance resin-reinforced composite material which uses as a matrix a thermoplastic resin and in which reinforcing fiber is oriented, clamping an end portion of the sheet by a sheet clamping device, conveying the sheet to a heating/forming zone, heating the sheet to a predetermined temperature, clamping the sheet by upper and lower frames by driving cylinders, forming the three-dimensional part by operating a mold and thereby deep drawing the clamped sheet inwardly according to a stroke of the mold, and repeating the above-described series of steps continuously.
Patent CA-2055717-C (CA)
Title: Paper having crossdirectional regions of variable basis weight
Inventor: ALLEN JEFFREY L
IPC: D21H27/00
Filed: 1991-11-15
Granted: 2006-06-13
Abstract: This invention describes paper having crossdirectional regions (11) with increased basis weight, and a method and machine for producing same. Paper of this kind has a uniform weight basis and is particularly useful as a wrapping material for smoking articles, as it promotes even burn characteristics of the smoking article. The paper may be produced by depositing additional material onto a moving base web (16) in a papermaking machine (10). This additional material is deposited by way of a rotating drum (21) containing a number of slits through which the additional material passes.
Patent CA-2058057-C (CA)
Inventor: FARMER PETER HARRINGTON
IPC: C08J7/04
Filed: 1991-12-19
Granted: 1999-09-21
Abstract: A plastic sheet, preferably of plasticized partial polyvinyl butyral, for a laminated safety glazing, having means dispersed on its surface, preferably comprising a multiplicity of spaced projections, capable of resisting adhesion to a rigid panel, such as glass, of such a glazing when the sheet is laminated to the panel, the area of the sheet surface without such dispersed means having high affinity for adhesion. The projections physically block adhesion of a dispersed area of the sheet to the panel in that the means on the sheet surface have no or weak interfacial adhesion.      The multiplicity of space projections also have low or no affinity for adhesion when in blocking contact with each other or with another plasticized partial polyvinyl butyral surface and thereby increase blocking resistance.
Patent CA-2060674-C (CA)
Inventor: TAGAWA MASAHIRO
IPC: G11B9/00
Filed: 1992-02-05
Granted: 1996-10-01
Abstract: A driving apparatus for driving an object comprises a pair of piezoelectric elements, one of them being arranged on the one side of the object while the other of them on the other side of the object, and the respective electrode arrangement directions of the pair of piezoelectric elements being substantailly identical to each other, and a control circuit which applies a predetermined voltage across the outer electrodes of the pair of piezoelectric elements respectively, gives an equipotential to the inner electrodes thereof, and causes the pair of piezoelectric elements to drive the object by varying the value of the potential given to the inner electrodes.  Hence, the increased amount of a voltage applied to one piezoelectric element is exactly identical to the decreased amount for the other so as to make the extended and contracted amounts of the piezoelectric elements on both sides of the object the same.  Consequently, no useless stress is given to the piezoelectric elements for the prevention of the deterioration of the elements to implement a precise fine driving over a long period.
Patent CA-2067610-C (CA)
Inventor: SAVARD DONALD D
IPC: F16L55/17
Filed: 1992-04-29
Granted: 1996-02-27
Abstract: The assembly comprises a pair of semi-circular steel shells. The  inner surface of one  shell  forms a centrally located,  circular recess and a concentric groove positioned between the recess and the side edges of the shell.   A flat cylindrical annular seal element is seated in and fills the recess.   The element is resilient and deformable.   It has concentric protruding ribs on its top and bottom surfaces.  The seal element is adapted to circumscribe a leaking small hole or crack in the wall of an internally pressurized pipeline.  The shells are then circumferentially clamped against the pipeline to cause the element to seal around the leak and to effect tight shell-on-pipe  contact.   The  steel  side wall  of the recess confines the compressed seal element.   The side edges of the shell   are   then   welded   together   longitudinally   and circumferentially to create a permanent pressure vessel sealing and containing the leak.  The concentric groove acts as a heat sink to impede the transfer of heat from welding through the shell wall toward the seal element.
Patent CA-2071483-C (CA)
Title: Oligonucleotide analogs with novel linkages
Inventor: MATTEUCCI MARK
IPC: A61K48/00
Filed: 1990-10-24
Granted: 2001-04-17
Abstract: The instant invention is directed to oligonucleotide compounds wherein on or more phosphodiester linkages between adjacent nucleotides are replaced by a formacetal/ketal type linkage. The nucleotides of the present invention are resistant to nucleases and do not need to exhibit the diastereomerism characteristic of many other oligonucleotide compounds and thus are capable of strong hybridization to target RNA or DNA. These oligonucleotide compounds are useful in therapies which modulate gene expression using antisense or other specifically binding oligomers.
Patent CA-2076960-C (CA)
Title: Frequency scaler for synchronous digital clock
Inventor: SASAKI LAWRENCE HIROMI
IPC: H03K23/66
Filed: 1991-04-24
Granted: 1996-02-06
Abstract: A frequency scaler comprising a plurality of flip-flops, varies its frequency division to correct phase by 0.5 clock cycle.   Each flip-flop is continuously and synchronously responsive to either a rising or a falling edge of the clock pulses.  Normally, the scaler's state transits along one of two loops, which generate output pulses having identical repetition rates.   When a control signal is applied, the scaler's state transits from one loop to the other, generating at least one output at an alternative repetition rate.   The alternative repetition rate is either lower or higher than the identical repetition rate by an integral number of half cycles of the input clock pulses.   Where there are two control signals, a lower or higher alternative repetition rate can be selected.  Since the flip-flops are responsive to either edge of the clock pulses without clock gating interruptions, there is no jitter and the scaler's robustness is improved.  Also the clock frequency can be effectively halved.               -i-
Patent CA-2078512-C (CA)
Title: Scale for fast determination of weights
Inventor: FEINLAND SEYMOUR
IPC: G07B17/00
Filed: 1992-09-17
Granted: 1996-07-09
Abstract: A scale for fast determination of weights including a platform and a load cell transducer.  Output of the transducer is converted to a digital signal, processed by a low pass digital filter, and weights computed as a function of the sequence of digital signals by means of an algorithm which compares a first estimate of the weight to the break points of a postal rate chart and uses the first estimate if it is not within a predetermined distance of a break point, and otherwise determines a second, more accurate estimate.  The platform and transducers are combined to form a structure which does not have any significant resources below the cut-off frequency of the filter.
Patent CA-2087794-C (CA)
Inventor: BILLINGS ROBERT LEONARD
IPC: H01F41/04
Filed: 1993-01-21
Granted: 1998-09-29
Abstract: Magnetic circuit elements, e.g. for inclusion on circuit boards including one or more windings about a toroidal core are produced by joinder of mating sheets, one or both recessed to hold the core, and each containing partial windings. Joinder is by use of an anisotropically conducting adhesive layer. The layer is applied as an uncured thermosetting adhesive containing spherical conducting particles of suchsize and distribution as to statistically result in electrical completion of windings while avoiding turn-to-turn shorting.
Patent CA-2090738-C (CA)
Title: Use of paf
Inventor: HASHEMI SOFIA
IPC: A61K31/685
Filed: 1993-02-24
Granted: 1996-05-21
Abstract: The use of platelet-activating factor (PAF) to increase the levels of von Willebrand factor and/or Factor VIII in blood is disclosed.  The use of PAF has particular application in the treatment of von Willebrand disease and haemophilia A.