baber/WOPTO huggingface dataset:
Patent CA-2061964-A1 (CA)
Title: Chimney cleaning tool
Inventor: BREWSTER JOHN S
IPC: B08B9/00
Filed: 1992-02-27
Abstract: ABSTRACT          A chimney cleaning tool for removing accumulations of foreign materials from the interior surfaces of smoke chambers and chimney flues of fireplaces and furnaces.  The invention comprises a hub which is adapted to be rotated by a power driven rod, a single resilient multi-wire cable clamped to the hub and U-bolts with hex nuts for clamping the cable to the hub.  The cable has loop shaped portions arranged in perpendicular relationship to the rotational axle of the hub which extend outwardly from the hub.  When the tool is inserted into a chimney flue, rotated, and brought to bear against the interior surfaces of the flue, the outer portions of loops rapidly remove accumulated materials from the flue without damaging the flue.       The invention can also be used for removing materials which accumulate on the walls of other conduits, such as sewers and oil well casings.
Patent CA-2063441-A1 (CA)
Title: Support de chromatographie cellulosique
Inventor: SCARPA IOANNIS
IPC: B01J20/32
Filed: 1990-06-29
Abstract: L'invention décrite ci-dessus concerne en particulier les particules de cellulose sensiblement sphériques et de haute densité. L'invention concerne également une méthode de fabrication de ces particules et concerne notamment une méthode de formation de cellulose sphérique à partir d'une viscose à poids moléculaire élevé dans une émulsion stable d'un véhicule liquide et des agents émulsionnants.
Patent CA-2063613-A1 (CA)
Title: Recycling system
Inventor: VANDERVALK JAMES H
IPC: B65F5/00
Filed: 1992-03-20
Abstract: ABSTRACT OF THE DISCLOSURE      The present invention relates to an apparatus and a method for processing materials to be recycled, which materials are sorted and retained in individual bins. The apparatus includes a receiving station for receiving the individual bins of material; a material transporting device having a pair of opposed ends; a dumping station in cooperative association with the receiving station and one end of the material transporting device.  The dumping station is adapted to receive the individual bins of material and dump the material from the individual bins onto the material transporting device.  A plurality of separate storage containers are provided and are positioned at the other end of said material transporting device.   The material transporting device is movable to be placed in cooperative engagement with a selected one of the plurality of storage containers.
Patent CA-2064547-A1 (CA)
Title: Bipolar electrosurgical scalpel with paired loop electrodes
Inventor: RYDELL MARK A
IPC: A61M3/02
Filed: 1992-03-31
Abstract: BIPOLAR ELECTROSURGICAL SCALPEL WITH PAIRED LOOP ELECTRODES                 ABSTRACT OF THE DISCLOSURE A bipolar electrosurgical scalpel comprising a handle having pair of loop electrodes extending outwardly from the distal end thereof in parallel, spaced relation, such that the spacing defines a dielectric such as an air gap therebetween.  When a RF voltage of a predetermined amplitude is applied across the two electrodes and they are drawn across tissue, cutting occurs by virtue of the arc established between the two electrodes.   The electrodes may be formed from tungsten wire to withstand high operating temperatures and  are  sufficiently  rigid  to  withstand  the  pressure  forces encountered during electrosurgery without shorting together across the gap.  The electrodes may be formed in various shapes, depending upon the nature of the cutting desired.  Possible configurations include open rounded loops, open elongated loops, open triangular-shaped loops, L- or J-shaped hooks.  The supporting conductors to which these electrodes are affixed may be straight tubular legs or curved hooks formed from flattened lengths of metal tubing.  The loop electrodes may also be ultrasonically vibrated and/or fluid flushed to enhance removal of char and tissue debris during use.          To enhance coagulation properties,  metal surface electrodes of relatively large area may be embedded in an insulating end cap of the scalpel and the loop cutting electrodes are designed to be retracted  therein  such  that  only  the  surface  electrodes  are exposed.  The instrument is controlled by either a hand switch or a standard surgical foot switch.
Patent CA-2065142-A1 (CA)
Title: Inner tube stabilizer for a corebarrel
Inventor: RADFORD STEVEN R
IPC: E21B25/00
Filed: 1992-04-03
Abstract: ABSTRACT A stabilizer bearing assembly is described for maintaining separation between a substantially nonrotating inner tube assembly and a rotating core barrel within which the inner tube assembly is disposed. The bearing assembly comprises a cylindrical tube having a cylindrical sleeve segment concentrically slidably mounted on the tube over an external bearing portion thereof. The tube includes an upper and a lower segment, with the hardened bearing portion over which the sleeve sits being located near the lower end of the upper segments. A flange demarcs the upper edge of the bearing portion. The upper end of the lower tube segments is threadedly attached over the lower end of the upper segment. The sleeve segment is trapped between the flange and the edge of the upper end of the lower tube segment. The inner surface of the sleeve has a plurality of spaced longitudinal furrows and the outer surface of the sleeve has raised ridges corresponding to the furrows. The furrows provide a passage for drilling fluid and debris. The ridges have at their tops flattened bearing surfaces which define an outer circumference whose radius is greater than the radius of the outer circumference of the sleeve segment and the tube. The stabilizer assembly can be detachably inserted between adjacent upper and lower elements of a inner tube assembly. For use, one or more of such stabilizer assemblies would be inserted at spaced intervals in an inner tube assembly.
Patent CA-2065615-A1 (CA)
Title: Prestabilized chromium protective film to reduce radiation buildup
Inventor: ROOFTHOOFT ROGER L A
IPC: C25D5/50
Filed: 1992-04-08
Abstract: Abstract of the Disclosure The buildup of radioactive contaminants on the inside surface of light water reactor water systems is retarded by the use of a chromium coating of at least five hundred Angstroms on the surface exposed to the water system.  In another embodiment, after application to surface to be protected, the chromium coating is passivated by exposure to an oxygen source for about five hours at a temperature between 150° C and 450° C.
Patent CA-2065737-A1 (CA)
Inventor: MURPHY RAYMOND L H
IPC: A61B7/00
Filed: 1990-09-11
Abstract: A system and method for automatically detecting an adventitious sound from a sound signal formed of a plurality of successive sound waves received from a patient including establishing at least one of a predetermined time interval and a threshold signal value based on an average signal value of at least a portion of a sound signal, sequentially comparing the sound waves to at least one of the threshold signal value and the predetermined time interval to identify a first wave having at least one of an amplitude at least as large as the threshold signal value and a duration falling within the predetermined time interval, and identifying an adventitious sound when at least one consecutive wave following the first wave has at least one of an amplitude at least as large as the threshold signal value and a duration falling within the predetermined time interval.
Patent CA-2066006-A1 (CA)
Title: Address caching network interface circuit for transparent bridge
Inventor: DELANEY DAVID M
IPC: H04L12/46
Filed: 1992-04-14
Abstract: ABSTRACT           A data transfer system between local area networks to which stations are connected comprising a transparent bridge, network interface circuits (NICs) connected between the networks and the bridge, at least one NIC comprising cache memory apparatus for maintaining temporary record of the source address of station(s) transmitting data on an associated LAN, apparatus for determining the destination address of frames received on the LAN from a given station or another bridge attached to the LAN, apparatus for transferring (or allowing the transfer of) the frames to the bridge for further transmission to another NIC in the event the destination address is not one of the addresses in the cache memory.
Patent CA-2066358-A1 (CA)
Title: Transport refrigeration system
Inventor: ANDERSON LOWELL M
IPC: B60H1/32
Filed: 1992-04-16
Abstract: 56,754 ABSTRACT OF THE DISCLOSURE A transport  refrigeration system having a frame which supports a refrigerant compressor, a prime mover for the compressor, condenser and evaporator coils, and an air delivery assembly for moving air through the condenser and evaporator coils.   The  air delivery  assembly includes a single shaft having  first  and  second  condenser blowers mounted adjacent  the ends of the shaft, and an evaporator blower mounted on the shaft between  the first  and second condenser  blowers.    A drive  arrangement  for  the air delivery assembly includes a jack shaft  between the shaft of the air delivery assembly and the prime mover, with the prime mover being linked to drive the jack shaft, and with the jack  shaft being linked to drive the shaft of the air delivery assembly.
Patent CA-2068926-A1 (CA)
Inventor: ANDERSON CLEO D
IPC: H04B10/00
Filed: 1992-05-19
Abstract: A relatively simple, low cost apparatus detects the presence and location of faults in an optical transmission system. It is particularly applicable to underwater optical transmissions systems. The optical transmission system contains at least one optical fiber pair extending between two terminals. Optical amplifier based repeaters are located at predetermined positions along fibers. Each repeater has a simple high-loss optical loopback circuit which is used to provide fault identification and location. The loopback circuit couples a portion of the optical signal travelling from a transmitting station through one of the fibers, attenuates that portion of the optical signal, and adds the attenuated signal to the optical signal in the other fiber for return to the transmitting station. Fault location is accomplished by launching a supervisory signal into the fiber from one of the terminals. At each repeater, the loopback circuit causes an attenuated version of the supervisory signal to return to the station from which it was launched, combined with any noise andsignal in the return lines. The supervisory signal is a pseudo-random word whichcan be recovered from the signal and noise in the return line via a correlation technique. The loopback circuit in the repeaters is composed of passive components which may comprise a pair of optical couplers each of which is adjacent one of the two transmission fibers. The optical couplers are connected by a fiber containing a preselected amount of attenuation. There is no need for any sensing circuitry in the repeater to activate the loopback in response to command signals in the supervisory signal. The production of the supervisory signal consequently is simplified because there is no need for command information to be a part of the supervisory signal.Degradation of signals through the optical transmission system is easily detected in a reasonable amount of time at the terminals of the system via the correlation technique. In addition, the correlation technique allows one to easily identify the location of the degradation on the transmission line.
Patent CA-2070802-A1 (CA)
Title: Fabricating one-piece can bodies with controlled side wall elongation
Inventor: SAUNDERS WILLIAM T
IPC: B65D1/26
Filed: 1991-10-15
Abstract: New technology for fabricating a one-piece cup-shaped can body. A  plurality of successive diameter-reduction operations are carried out on a planar blank (84) and cup-shaped work product (96) during which sidewall height is increased and sidewall substrate is decreased in thickness to provide controlled uniformity in sidewall substrate thickness over about 85 % to about 95 % of sidewall height for such can body. The fabricating tooling provides for a preselected clearance between a punch peripheral wall and a die cavity internal wall (88) in each of such plurality of diameter-reduction operations to achieve a desired decrease inside wall thickness as the precoated substrate is moved into a die cavity (86) by relative movement of its respective punch (90).
Patent CA-2072200-A1 (CA)
Inventor: SATO TOSHIO
IPC: C21D9/56
Filed: 1992-06-24
Abstract: A method for controlling coating weight on a hot-dipping steel strip comprises the steps of positioning at least one pair of high-frequency current conducting paths near one side of a steel strip and near another side of the steel strip drawn out of a coating bath, each of the high-frequency current conducting paths being parallel with a surface of the steel strip above the coating bath, and flowing a high-frequency current strong enough to magnetically saturate the steel strip through the at least one pair of high-frequency current conducting paths to induce a high-frequency current of an opposite phase in the steel strip, a magnetic pressure acting on surfaces of the steel strip being generated by interaction of the induced high-frequency current with a high-frequency current of the high-frequency current conducting paths.
Patent CA-2072871-A1 (CA)
Title: Preservation of blood, tissues and biological fluids
Inventor: SHANBROM EDWARD
IPC: A61K35/14
Filed: 1991-09-03
Abstract: The treatment and preservation of blood, blood derivatives and other body tissues, fluids and cells with povidone-iodine to kill pathogenic microbes without destroying the utility of the tissues, fluids and cells is disclosed.
Patent CA-2075439-A1 (CA)
Inventor: ROSTHAL RICHARD A
IPC: G01V3/38
Filed: 1992-08-06
Abstract: The disclosed technique and apparatus utilizes the different characteristic responses of a plurality of signals from a propagation or induction well logging device to determine the vertical and horizontal resistivity of formations surrounding a borehole.  In a disclosed embodiment, a method is set forth for determining the horizontal conductivity and the vertical conductivity of formations surrounding an earth borehole, including the following steps: a) deriving first and second formation conductivity values from measurements taken in the borehole; b) selecting a horizontal conductivity model value and a vertical conductivity model value, c) computing error values from the differences between: (i) first and second composite conductivity values computed as a function of the horizontal and vertical conductivity model values, and (ii) the first and second derived formation conductivity values; d) modifying the horizontal and vertical conductivity model values; e) repeating steps (c) and (d) until predetermined criteria of the error values are met; and f) outputting modified horizontal and vertical conductivity model values.
Patent CA-2078521-A1 (CA)
Inventor: CHOISNET JOEL
IPC: B64D15/20
Filed: 1992-09-17
Abstract: Dispositif pour la détection du givrage des pales d'un rotor d'aéronef L'invention concerne un dispositif pour la détection du givrage des pales d'un rotor d'aéronef. A cet effet, il comprend un capteur d'effort de traction 110) et un capteur de couple (11) pour mesurer la force axiale et le couple s'exerçant sur l'arbre du rotor, des moyens (12) pour calculer le rapport entre ces deux grandeurs, des moyens (12) pour déterminer, en fonction des conditions de vol, la valeur nominale de ce rapport en l'absence de givrage, et des moyens (12) pour comparer le rapport calculé au rapport nominal. Fig. 2
Patent CA-2080080-A1 (CA)
Inventor: NAKAGAWA YOSHIKAZU
IPC: H01L29/812
Filed: 1992-10-07
Abstract: Insulating layers are formed,  for instance, by ion injection, in a multilayer of compound semiconductor layers in regions spaced at predetermined intervals, to leave a plurality of narrow channel layers between the insulating layers.  A gate electrode is formed on the insulating layers and channel layers so as to traverse those layers.
Patent CA-2080611-A1 (CA)
Title: Index-feed machining system
Inventor: FUTAMURA SHOJI
IPC: B21D43/06
Filed: 1992-10-15
Abstract: An index-feed machining system having such a construction that a plurality of machining units on the bodies of which cassettes incorporating a plurality of machining means are detachably mounted are disposed at intervals of mP (m being a given positive integer, P being a workpiece-feeding pitch) in the workpiece-feeding direction, corresponding to a plurality of machining processes; the machining processes being sequentially performed by the machining units at the index-feed pitches of the workpiece, in which drive means for driving the machiming means are provided in the cassettes comprising any machining units.
Patent CA-2080656-A1 (CA)
Title: Saturable core proximity sensor including a flux director
Inventor: DANIELS TED M
IPC: G01V3/08
Filed: 1992-10-15
Abstract: A variable reluctance saturable core proximity sensor assembly comprising a target (22) and a sensor (50). The target consists of a magnet (24) having a high field strength, a base plate (28) having a high relative permeability, and a nonmagnetic metal housing (34, 36) surrounding the magnet and base plate. The sensor consists of a core (52) made from a material having a high relative permeability, a coil (60) surrounding the core and a housing made from a nonmagnetic material surrounding the core and coil. At its distal end of the core is a flux director (120) that intercepts the magnetic field produced by the target. The flux director comprises a plurality of radially extending arms having the same permeability as the core. The flux director has a cross-sectional area selected so that the flux director and core saturate at substantially the same time. The sensor assembly may be used in either a slide-by or head-on mode.
Patent CA-2080663-A1 (CA)
Inventor: GAUTHIER PIERRE
IPC: C01B3/56
Filed: 1992-10-15
Abstract: PROCÉDÉ ET INSTALLATION D'ÉPURATION D'UN GAZ PAR ADSORPTION ABRÉGÉ DESCRIPTIF Dans ce cycle PSA, une partie du gaz résiduaire soutiré à contre-courant des adsorbeurs en cours de régénération est recyclé et mélangé a l'hydrogène impur entrant. Application à l'épuration de mélanges riches en hydrogène, en hélium ou en néon.
Patent CA-2082689-A1 (CA)
Title: Zinc oxide crystal and method of producing same
Inventor: KITANO MOTOI
IPC: C30B29/16
Filed: 1992-11-12
Abstract: A novel zinc oxide crystal has an octahedral nucleus whose faces are alternately zinc faces and oxide faces, and this crystal has such a geometric shape that a needle is grown on each of the faces.  The needle grown on the oxide face is branched into three sections which are disposed in parallel relation, and the needle on the oxide face is shorter than the needle on the zinc face.  This novel crystal having oxide films can be produced in a homogeneous manner by  mixing zinc-tin alloy powder or tin powder with zinc powder, having an oxide film formed on each particle thereof, to form a powder mixture and then by heating the powder mixture at 820°C to 1100°C in an oxidizing atmosphere to oxide the same.  The tin concentration in the power mixture is less than 40 wt.%.
Patent CA-2087465-A1 (CA)
Inventor: BLEIJENDAAL NICOLAAS G J
IPC: F27D99/00
Filed: 1993-01-18
Abstract: In the construction of a hot blast stove, walls are made of pre-formed and baked bricks. At the joint between two walls, cast joining elements of complex shape are incorporated. The cast joining elements may be cast in situ. This avoids the need for pressing joining bricks of a variety of shapes.
Patent CA-2087712-A1 (CA)
Title: Sawc phase-detection method and apparatus
Inventor: DIXON ROBERT C
IPC: H04B1/707
Filed: 1991-07-17
Abstract: A phase-coded surface acoustic wave correlator device (17) is used with a spread spectrum receiver. A data device (13) outputs a data symbol sequence, a code generator (14) repetitively generates a spreading sequence, and a chip modulating device (11) combines the outputs of the data device (13) and of the code generator (14). The output of the chip modulating device (11) is combined with the output of a signal source (16) in a phase modulator (12).  Upon receiving the signal at the surface acoustic wave correlator (17) from the communications channel (15), the signal is demodulated at the surface acoustic wave correlator (17) using appropriate transducer and tapped delay line structures phase-matched to the chip sequence of the received signal. The output of the surface acoustic wave correlator (17) is fed into a phase detector (18) which recovers the data symbol sequence for further use.
Patent CA-2088052-A1 (CA)
Title: Satellite mobile communication system for rural service areas
Inventor: LEE WILLIAM C
IPC: H04B7/185
Filed: 1991-06-13
Abstract: A mobile communications system uses a communications satellite (130) and a Mobile Telephone Switching Office (MTSO) (150) and communicates with mobile units (101, 102) via the satellite (130). A  cell site (140) has a co-located cell site converter (145) which converts satellite signals to signals for the MTSO and vice-versa. Remote converter sites (110-113) communicate with the satellite (130) and with the mobile units (101, 102) in given geographical areas. A single satellite link is sufficient for adequate RSA  service. Frequency and phase differences among signals from the remote sites (110-113) to the satellite (130) are synchronized to avoid frequency -and phase- drift.
Patent CA-2090557-A1 (CA)
Title: Solid-state laser device
Inventor: KOJIMA MINORU
IPC: H01S3/04
Filed: 1992-07-01
Abstract: ABSTRACT    An object of the invention is to provide a solid state laser device design so as to improve a cooling effect in said laser device; whereby an electric power to be applied to an excitation lamp can be increased, a large oscillation power can be obtained, and a thermal lens effect generated in the laser medium can be suppressed.    Therefore, the solid-state laser device includes a laser medium, an excitation lamp for applying excitation light to the laser medium, a transparent first cooling pipe accommodating the laser medium, a transparent second cooling pipe accommodating the excitation lamp, wherein a first cooling system which feeds a cooling water to the first cooling pipe and a second cooling system which feeds a cooling water to the second cooling pipe are independent of each other and the respective systems have a water-feeding pump.  The cooling pipes are formed of cerium-doped quartz glass capable of inhibiting transmission of light having a wavelength not longer than 320 nm.
Patent CA-2090762-A1 (CA)
Inventor: WEDER DONALD E
IPC: C09J7/04
Filed: 1993-02-25
Abstract: A decorative material comprising a sheet of material having a colored sticky element disposed upon a portion of a surface of the sheet of material, the colored sticky element comprising at least a portion of a decoration on the sheet of material. The sheet of material is disposed on a surface or wrapped about an item.
Patent CA-2091588-A1 (CA)
IPC: A22C17/04
Filed: 1991-09-04
Abstract: An apparatus for obtaining nutritive substances by extraction from bones and meat adhering thereon has a receptacle (2) for receiving bones and an extracting liquid, preferably water.  In the receptacle at least one stirring element (7) is provided and the receptacle (2) is tiltable with a horizontal shaft (3) so that is content can be discharged onto a coarse sieve (15) positioned within a trough (14) for separating the bones and the coarse components from the liquid and the fine components.  Below the coarse sieve (15) is a gutter which leads to a rotating sieve (23) the sieve openings of which are smaller than those of the coarse sieve (15).  At least one stripper engages the rotating sieve (23) and below the rotating sieve (23) there is a collecting container (30) for the liquid, a discharge conduit (34) extending from this container.  This results in a space-consuming construction and permits a fractional separation of the useful components of the bones and the meat adhering thereto.