baber/WOPTO huggingface dataset:
Patent CA-2204970-A1 (CA)
Title: Microprocessor based motor control system with phase difference detection
Inventor: NEHRING DANIEL A
IPC: H02H7/093
Filed: 1997-05-09
Abstract: The present invention involves a control system for a motor having a main winding and an auxiliary winding disposed on a stator. A microprocessor determines the phase difference between the line voltage and the voltage between the main winding and the auxiliary winding to determine the rotational status of the rotor. In a moving rotor, a measurable phase difference exists. This phase difference can be measured by monitoring the zero crossings of the respective voltages. One method of measuring the phase difference is to check the logic state corresponding to the voltage between the main and auxiliary windings when a predetermined time period has elapsed after a zero crossing of the line voltage. Another method measures the time delay between the zero crossings of the two voltages. The control system of the present invention is particularly adapted for use with single phase AC motors having a main winding and an auxiliary winding disposed electrically out of phase on the stator. The control system of the present invention is also particularly adapted for use with compressors and appliances associated with a refrigeration system having a cabinet temperature detector. The refrigeration system of the present invention includes a motor housing detector to deenergize and prevent motor start if an overheat condition exits, and a user setting device to allow a user to manually add an offset to the temperature setting. Additional control functions can be easily added using extra input and output leads provided on the microprocessor.
Patent CA-2206830-A1 (CA)
Title: High rise steel column
Inventor: VINCENT RICHARD
IPC: E04C3/34
Filed: 1997-05-15
Abstract: The composite steel/concrete column comprises a longitudinally extending H-shaped steel assembly having a pair parallel flange plates and a web plate interconnecting the flange plates and defining two opposite channel-shaped spaces. A plurality of spaced-apart transversal tie bars are disposed along the steel assembly on each side of the web plate for interconnecting the flange plates. A mass of concrete is filling the channel-shaped spaces. The column steel concrete column is characterized in that the ratio of the cross-sectional surface area of the steel assembly with respect to the total surface area of the composite steel/concrete column is less than 9%, preferably 2% to 5%. The column is principally to be utilized in structural steel high-rise buildings which have the advantage of shop prefabrication resulting in rapid on site construction. The column shows a steel to concrete ratio greatly reduced as compared to prior art composite columns, thereby greatly reducing the production cost and the size of the column and also greatly reducing its construction time.
Patent CA-2210921-A1 (CA)
Title: Process for modifying surfaces
Inventor: SIRVIO LARRY M
IPC: C08J7/043
Filed: 1996-01-16
Abstract: A process for modifying a surface of an article that includes treating the surface with: (a) a first water-soluble polyalkylene amine (b) a water-soluble polymeric anionic compound and (c) a second water-soluble polyalkylene amine in the absence of crosslinking agents to create a modified surface.
Patent CA-2215056-A1 (CA)
Title: Improved vest design for a cardiopulmonary resuscitation system
Inventor: TSITLIK JOSHUA E
IPC: A61H31/02
Filed: 1996-03-15
Abstract: An improved vest design (10) for cardiopulmonary resuscitation is disclosed.  The vest (10) includes an inflatable bladder (22) capable of radial expansion to first conform to a patient's chest dimensions and then to apply circumferential pressure. The improved vest design (10) affords ease of placement on a patient without concern for how tightly the vest (10) is initially applied. Also disclosed are various vest designs (88, 90, 92) that reduce the amount of compressed air that must be used for each compression/decompression cycle of the vest (10). These improvements lower the energy consumption and make smaller and portable cardiopulmonary resuscitation systems possible.
Patent CA-2217840-A1 (CA)
Title: Synchronization system multiple modes of operation
Inventor: FERLAND ROGER
IPC: H04L7/00
Filed: 1997-10-09
Abstract: An improved local synchronization module which uses Frequency-phase adaptive double locked loop (FPADLL) to control a stable controllable oscillator is disclosed. A single physical feedback loop is implemented which can operate in either a phase locked loop mode or a frequency locked loop mode. The sync module includes a controller which determines in which mode the feedback loop operates. The controller also uses slipping information from a network reference recovery interface to reduce slipping. Also effects of ageing of the stable controllable oscillator are predicted and compensated for.
Patent CA-2219144-A1 (CA)
Inventor: CARROLL PHILLIP PATRICK III
IPC: B60N2/42
Filed: 1995-07-17
Abstract: Disclosed is an energy absorbing structure (10) for decelerating an object (12) that impacts the structure. The structure has at least one energy absorbing member (20). Each member includes a stranded structure such as expanded metal (22) which provides the energy absorbing structure (10) with the characteristic of energy absorption according to a near square wave characteristic.
Patent CA-2219843-A1 (CA)
Title: Procede de frittage de tubes ceramiques
Inventor: GILLOT JACQUES
IPC: F27D5/00
Filed: 1997-11-20
Abstract: La présente invention a pour objet un procédé de frittage de tubes-ébauches (2) dans un four en vue de l'obtention de tubes en céramique présentant une grande rectitude, dans lequel, au cours du frittage, les tubes-ébauches (2) sont placés à l'intérieur de tubes-supports (1) en matière céramique, lesdits tubes-ébauches ( 2) ayant un diamètre intérieur compris entre 1,8 et 2, 2mm et un diamètre extérieur compris entre 3mm et 4mm et les tubes-supports (1) ayant un diamètre intérieur supérieur à 4,5mm. Ainsi, la surface intérieure des tubes-supports (1) ne s'éca rte pas sensiblement d'un cylindre idéal, le défaut de rectitude de cette surface étant inférieur à 0,1mm sur une longueur de 90mm.
Patent CA-2220892-A1 (CA)
Title: Closure system for an air intake port in the combustion chamber of a ramjet
Inventor: HALLAIS MICHEL
IPC: F02K7/18
Filed: 1997-10-28
Abstract: This invention concerns a closure system for an air intake port in the combustion chamber of an auxiliary booster rocket (14) for a ramjet.  According to the invention, this closure system includes an elastic system (28, 29, 31, 32)m, connected to the closure trap (20A, 20B) and a fastening element (33) to hold the said elastic system in the said strung state during the initial rocket operation stage, said fastening element being sensitive to the hot gases emitted by the said auxiliary booster rocket (14) so that, at the end of its consumption, the said fastening element (33) liberates the said elastic system which changes spontaneously from its strung state to its released state, resulting in the said trap moving from its closed position to its open position.
Patent CA-2223340-A1 (CA)
Inventor: GROVER DONALD D
IPC: F16G11/12
Filed: 1997-12-03
Abstract: A power drive assembly is provided for an elongated turnbuckle-type cable tightener having an elongated sleeve with a driven gear wheel on it, and two loop-defining cable end anchors respectively threadedly engaged in its opposite ends. A drive unit is adapted to be coupled to the sleeve and has a motor-driven gear engageable with the driven gear for rotating the sleeve. Two right-angle reaction bars couple the frame of the driven unit to the cable anchors, each reaction bar having one end slidably received in openings in the driven unit frame and another end received through the loop of the associated cable anchor.
Patent CA-2224544-A1 (CA)
Inventor: SHEW JERRY D
IPC: F16K1/00
Filed: 1997-12-09
Abstract: A fluid flow control valve is provided comprising a valve seat inside a housing for defining a passage opening in the housing and a valve seal positioned against the valve seat for closing off fluid flow. A push rod extends from the valve seal and through the passage opening. The push rod is moveable for moving the valve seal off the seat to open the valve. The valve seal is restricted to substantially axial movement, preferably by a spring biasing the valve seal against the valve seat which spring is sized so as to engage the walls of the passage. A cam shaft rotatably mounted in the housing is provided for moving the push rod upon rotation of the cam shaft. A handle is non-rotatably connected to the shaft for rotating the cam shaft. A latch may be provided for releasably locking the handle in a position where the valve is open. A safety may also be provided on the latch arm so as to prevent the handle from being moved accidentally. A manipulator accessible through an opening in the handle operates to both effect engagement of the latch and release the safety. The valve is configured for maximizing fluid flow by allowing fluid to flow around the outside rather than through the inside of the valve assembly. Moreover, a substantial portion of the cam shaft is positioned out of the passage to maximize fluid flow around the shaft when the valve is open.
Patent CA-2228018-A1 (CA)
Inventor: FISCHER ANDREAS
IPC: F41G3/26
Filed: 1998-01-23
Abstract: Method and system for determination and display of a miss hit when firing at an airborne target (10, 10') by means of a projectile (16) fired through a gun (12). Using an image pick-up system (14.1 to 14.4), two sequences of images both of the airborne target (10) and of the projectile (16) are recorded respectively, and synchronously to this, two sequences of angle pairs are recorded respectively, which define the respective positions of the airborne target (10, 10') and the projectile (16). Using an image processing system (20.1 to 20.4) and a computer system (22.1, 22.2), a respective time-space flight path is calculated for the airborne target (10, 10') and for the projectile (16) from the sequences of the images and angle pairs, and these flight paths are compared in order to determine therefrom. the miss hit defined as the minimum distance between the airborne target (10, 10') and the projectile (16). The miss hit is then displayed at the location of the gun (12). Determination of the miss hit is partly a real time process, partly a quasi real time process, and display of the miss hit is a quasi real time process.
Patent CA-2228542-A1 (CA)
Inventor: LAMARIANO MIGUEL LAZPIUR
IPC: H05K13/08
Filed: 1998-02-04
Abstract: A component insertion machine for inserting electrical components into printed circuits integrates the functions of three previously separate machines into a single machine. The inventive machine includes the necessary functions of moving the printed circuits into and out of the machine, manipulating the printed circuits within the machine and inserting the appropriate components into the printed circuits. The inventive arrangement includes a first conveyor for transporting the printed circuits into the machine and an elevator associated with the conveyor for moving the printed circuits from the conveyor to a coordinates table. While on the coordinates table, an insertion head performs the task of inserting the necessary components into the printed circuits. The coordinates table moves to facilitate completely automatic insertion of all components. A second elevator moves the printed circuits onto a second conveyor that then transports the printed circuits out of the machine.
Patent CA-2228726-A1 (CA)
Title: Thin film wound dressing with removable foraminous backing layer
Inventor: ELLINGSON ERIC D
IPC: A61F13/02
Filed: 1998-03-06
Abstract: A thin film wound dressing is disclosed in which a thin, transparent, vapor-transmitting elastomeric film is coated along its underside with a suitable pressure-sensitive adhesive  for  securing the dressing  to  a patient's skin.  Prior to use, the adhesive layer is protected by a removable release liner.  The opposite (upper)  surface of the film has a removable backing layer with a multiplicity of wide openings or foramina separated from each other by connecting strip portions, and at least some of the strip portions preferably terminate in free ends along a peripheral edge of the film.
Patent CA-2232699-A1 (CA)
Title: Prestressed resilient compressor mount apparatus
Inventor: JAKOBS DIANE M
IPC: F04B39/00
Filed: 1998-03-19
Abstract: An elastomeric compressor mount has a hollow convex cylindrical head portion which is passed upwardly through a corresponding opening in a support foot portion of the compressor to place an annular portion of the foot in an annular mount groove which is disposed between its head portion and a larger cylindrical base portion of the mount. When  a  securement  bolt  is  passed  axially  through  a fastening opening  in the  mount  and tightened  into  an underlying base pan opening, the convex mount head portion is downwardly and radially outwardly deformed to cause the annular foot portion to be resiliently squeezed between the head portion and the underlying base portion of the mount. In a second embodiment of the mount its convex cylindrical head portion is of a solid configuration, and is joined to the  mount  base  portion  by  an  annular  flange  section coaxially disposed therein.  When the securement bolt is tightened the head portion is pushed downwardly relative to the mount body portion in a manner axially flexing the flange section and squeezing the annular compressor foot portion between the head and base sections of the mount. In a third embodiment of the mount its head section is cylindrical and has a depending,  reduced diameter stem section which is telescoped within the underlying mount base section to permit relative axial movement between the head and base sections of the mount when the securement bolt is tightened.
Patent CA-2232823-A1 (CA)
Title: Carton de congelation comportant des reperes interieurs et son procede de montage
Inventor: SCHOU ROAR BENDTSEN
IPC: B65D5/42
Filed: 1996-08-23
Abstract: Carton de congélation et procédé de montage dudit carton. Ce dernier comprend une partie avant (2), un fond (3) pourvu de parties latérales (4, 5) et une partie arrière (6), ainsi que des rabats (12, 139 situés dans les coins. Ces rabats (12, 13) sont pourvus de repères (14) sur le côté opposé vers l'intérieur du carton quand celui-ci est monté, lesdits repères visuels étant utilisés pendant le montage afin de vérifier si ce dernier a été effectué correctement. Ceci signifie que ces repères (14) sur les rabats (12, 13) deviendront déjà visibles pendant le montage du carton dans un cadre de congélation. De ce fait, le technicien peut vérifier rapidement la fermeture correcte du carton avant de le remplir avec du poisson ou tout autre produit.
Patent CA-2233221-A1 (CA)
Title: Magnetic switching element for controlling a surgical device
Inventor: SJOSTROM DOUGLAS D
IPC: A61B19/00
Filed: 1996-10-31
Abstract: An apparatus for controlling a surgical device includes a housing (105) and a magnetic switching element (400) mounted on the housing (105). The magnetic switching element (400) includes a magnet (405), a magnetic sensor (500) configured to produce a control signal for controlling the surgical device, and an actuator (410) mounted on the housing (105) for movement between a first position in which a magnetic field of the magnet is decoupled from the magnetic sensor (500) and a second position in which the magnetic field is coupled to the magnetic sensor (500) so as to change a value of the control signal produced by the magnetic sensor (500). The magnetic switching element (400) may also include magnetically soft material positioned so that movement of the actuator causes relative movement between the magnet and the magnetically soft material.
Patent CA-2234379-A1 (CA)
Inventor: MCMILLEN TROY A
IPC: A61B17/12
Filed: 1998-04-06
Abstract: A Suture cartridge assembly is disclosed. The cartridge assembly has a partially tied surgical knot formed from a suture filament for facilitating the fastening of body tissue. It also has a core tube to which the partially tied knot is secured. Further, the assembly has a suture cartridge which contains a tube slot for receiving the core tube. The assembly makes it easier to convert the partially tied surgical knot into a non-slip knot to securely and consistently fasten tissue. It is simple in construction, and it is readily adaptable to inclusion on various surgical instruments. When a first partially tied surgical knot is converted to a completed knot, the completed knot and its core tube can be removed from the cartridge, and a second partially tied knot secured about a new core tube can be received into the suture cartridge to enable multiple knot placements.
Patent CA-2234630-A1 (CA)
Inventor: GARCERA DANIEL
IPC: B01D63/06
Filed: 1998-04-07
Abstract: A macroporous support is disclosed, the permeability of the support varying in the direction of flow of a fluid to be  treated,  mean porosity increasing  in the direction of flow.  A method for preparing it and its use for cross-flow filtration are also disclosed.
Patent CA-2235783-A1 (CA)
Title: A stent
Inventor: BURPEE JANET
IPC: A61F2/82
Filed: 1998-04-24
Abstract: A stent for use in a lumen in a human or animal body, has a generally tubular body formed from a shape memory alloy which has been treated so that it exhibits enhanced elastic properties with a point of inflection in the stress-strain curve on loading, enabling the body to be deformed inwardly to a transversely compressed configuration for insertion into the lumen and then revert towards its initial configuration, into contact with and to support the lumen. The shape memory alloy comprises nickel, titanium and from about 3 at.% to about 20 at.%, based on the weight of the total weight of the alloy composition, of a ternary element selected from the group consisting of niobium, hafnium, tantalum, tungsten and gold. The ratio of the stress on loading to the stress on unloading at the respective inflection points on the loading and unloading curves is at least about 2.5:1, and the difference between the stresses on loading and unloading at the inflection points at least about 250 MPa.
Patent CA-2238192-A1 (CA)
Inventor: SOEDERKVIST JAN ERIK
IPC: H03H17/02
Filed: 1996-11-15
Abstract: A log-polar digital filter for processing a digitized log-polar signal that is a magnitude signal (rin) and an angle signal (PHIin), has a first converter for converting the log-polar signal into a converted linear Cartesian signal that includes an in-phase signal (Iin) and a quadrature signal (Qin). A linear Cartesian digital filter, coupled to the first converter, generates a filtered linear Cartesian signal from the converted linear Cartesian signal. The first converter may adapt a linearization of rin and compensate for gain errors introduced in an analog circuit that supplies a signal from which the digitized log-polar signal is derived. In another feature, a second converter may also be provided for converting the filtered linear Cartesian signal into a filtered log-polar signal that includes a filtered magnitude signal (rfilt) and a filtered angle signal (PHIfilt).
Patent CA-2238487-A1 (CA)
Title: Appareil produisant des fonctions optiques logiques et de commutation
Inventor: EVANS ALAN F
IPC: G02F1/35
Filed: 1996-12-11
Abstract: On utilise la diffusion Raman intra-impulsionnelle pour produire des dispositifs optiques qui peuvent être adaptés pour remplir diverses fonctions logiques et de commutation. Dans une forme de réalisation à porte logique de l'invention, plusieurs impulsions (16, 18) de même longueur d'onde centrale sont couplées pour produire une impulsion de sortie (24) dont le niveau de puissance est égal à la somme des niveaux de puissance des entrées. Lorsque le niveau de puissance d'une impulsion de sortie suffisamment étroite dépasse le seuil Raman, l'impulsion de sortie subit un décalage de longueur d'onde d'une ampleur pouvant être commandée par le réglage de la puissance d'entrée. Un filtre optique (14) bloque sélectivement les impulsions de sortie du coupleur en fonction du fonctionnement logique désiré du dispositif. Dans un commutateur (10) propre à l'invention une impulsion d'entrée (18) et une impulsion de commande (16) sont couplées et la diffusion Raman de l'impulsion de sortie est stimulée. L'impulsion de sortie (4) est appliquée à plusieurs lignes de sortie qui comportent chacune un filtre centré au niveau d'une bande passante prédéterminée. L'impulsion d'entrée est ainsi envoyée sur une ou des lignes de sortie sélectionnées en fonction de l'ampleur de l'impulsion de commande.
Patent CA-2239275-A1 (CA)
Inventor: KWOK ALEXANDER KING WAI
IPC: B61D7/26
Filed: 1998-05-29
Abstract: A wagon has hoppers 40,42 extending along its longitudinal axis 44 with doors 80,82 operated by opening lever 46 and closing lever 48 fixed to the opposite ends of a shaft 50 substantially perpendicular to the longitudinal axis 44.  Levers 46,48 carry wheels 47 and 49 respectively to engage an associated trackside cam for opening or closing the door(s) 80,82.  A driving arrangement 52 located approximately between the hoppers 40,42 converts the rotation of the transverse shaft 50 into rotation of the longitudinal shaft 54 which runs substantially along the centreline 44.  The driving arrangement 52 in one embodiment comprises bevel gears 56,58 on the respective shafts 50,54.  The doors may open outward or inward of the centreline.  For opening, the driving arrangement may be assisted by or replaced by the action of a flipper arm fixed to the transverse shaft engaging the linkage.
Patent CA-2241000-A1 (CA)
Title: Audio signal waveform emphasis processing device and method
Inventor: KAKUMOTO JUN-ICHI
IPC: H03H11/04
Filed: 1997-10-22
Abstract: Input audio signals are subjected to integration of the order of an even number by one or plurality of even order integrators and the input audio signals are subjected to differentiation of the order of an even number by one or plurality of even order differentiators. The even order integration signals subjected to the even order integration and the even order differentiation signals subjected to the even order differentiation are added to the input audio signals with the same phases or opposite phases. Thus, the expected frequency-gain characteristics can be obtained while the phase relations between the frequency components of the input audio signals in particular the intermediate audio frequency range, a part of the low audio frequency range near the intermediate audio frequency range, and a part of the high frequency range near the intermediate frequency range are maintained, so that the high grade sound quality can be achieved.
Patent CA-2241394-A1 (CA)
Inventor: WRIGHT PAUL J
IPC: C05F9/00
Filed: 1998-06-22
Abstract: A process is disclosed for converting shredded money and food stamps withdrawn from circulation into a fertilizer compound, namely a pumpable fiber mulch including nitrogenous plant nutrients which can be applied to the soil as fertilizer.  Finely chopped currency or food stamp residues are digested with mineral acid and the resulting slurry is neutralized with ammonium hydroxide to produce pumpable slurries useful in hydraulic seeding.