baber/WOPTO huggingface dataset:
Patent CA-2052150-C (CA)
Title: In-line gas/liquid dispersion
Inventor: CHENG ALAN T
IPC: B01J19/26
Filed: 1991-09-24
Granted: 1994-09-27
Abstract: IMPROVED IN-LINE GAS/LIQUID DISPERSION               Abstract of the Invention The dispersion of a gas in a liquid is enhanced by the use of an adjustable conical mixer to control the flow of a gas/liquid mixture to a venturi device used to accelerate the mixture to a supersonic velocity with subsequent deacceleration to subsonic velocity to produce sonic shock waves in the mixture.
Patent CA-2053579-C (CA)
Title: Release of pin-clutch mechanism in theft-deterrent device
Inventor: LYNCH JOHN L
IPC: E05B73/00
Filed: 1991-10-16
Granted: 2002-04-02
Abstract: An apparatus for releasing locked components of a theft-deterrent device in-cludes a seat for receiving a component of the theft deterrent device that contains a clutch and a ferromagnetic anvil that is positioned by a spring to fore the clutch to apply pressure against an inserted pin that is anchored in another component of the device so as to restrain the pin from release from the clutch; and a magnet with a pole piece coupled thereto, with the magnet and the pole piece being disposed for movement between a protracted position and a retracted position. When the magnet and the pale piece are in their protracted positron the pole piece is disposed about the sides of the clutch-containing component and applies magnetic flux from the magnet that is directed to overcame the farce of the spring and reposition the ferromagnetic anvil to thereby relax the pressure applied against the gin by the clutch so That the pin-anchoring component can be released from the clutch-containing component. The magnet and the pole piece are forced into their protracted position by a spring; and a flange is attached to the pole piece for enabling the magnet and the pole piece to be moved to their retracted position by applying pressure against the flange to overcome the force of the spring. When the magnet and the pole piece are in their retracted posi-tion, the attraction between the magnet and the anvil is less and the sides of the clutch-containing component are exposed so that the clutch-containing component can easily be gripped at its sides and removed from the seat. Also, when the magnet and the pate piece are in their retracted position, the releasing apparatus does not then enable the pin-anchoring component to be released from the clutch-containing component;  and the releasing apparatus further includes a lock for locking the magnet and the pole piece in their retracted position to prevent unauthorized use of the releasing apparatus.
Patent CA-2053957-C (CA)
Title: Alkoxysilylamines as curing agents for plastics precursors containing acetoacetate or acetoacetamide groups
Inventor: SCHAFER WALTER
IPC: C09D201/06
Filed: 1991-10-23
Granted: 2002-08-13
Abstract: The present invention is directed to a novel composition and the use thereof in various coating applications. The composition broadly comprises: a) an organic compound containing a primary amino group and an alkoxysilane group, and b) a plastic precursor containing at least two acetoacetate and/or acetoacetamide groups per mole-cule.
Patent CA-2055234-C (CA)
Title: Apparatus for crating or uncrating containers
Inventor: KRONSEDER HERMANN
IPC: B65B21/14
Filed: 1991-11-08
Granted: 1999-05-11
Abstract: The invention relates to an apparatus for packing or unpacking containers, particularly bottles, into and from carrying crates, respectively, comprising a rotation element mounted for rotation about a horizontal axis and having suspended therefrom, in the manner of gondolas and at locations spaced from its axis of rotation, a number of container pickup heads adapted to repeatedly travel through a closed loop path including a pickup position and a grip release position. The solution accord-ing to the invention is characterized in that each con-tainer pickup head is connected to the rotation element by suspension means permitting the pickup head to move relative to the rotation element in a substantially vertical plane, and that a drive and control mechanism is provided for the movement of the pickup heads relative to the rotation element in a manner to generate the loop path in a desired configuration.
Patent CA-2056943-C (CA)
Title: Substrate of improved plasma sprayed surface morphology
Inventor: CARLSON RICHARD C
IPC: C23C8/02
Filed: 1991-12-04
Granted: 1997-11-11
Abstract: A metal surface is now described having enhanced adhesion of subsequently applied coatings.  The substrate metal of the article, such as a valve metal as represented by titanium, is provided with a highly desirable surface characteristic for subsequent coating application.  This can be achieved by a plasma sprayed coating of well defined surface morphology, the plasma spraying being with one or more metals usually valve metals.  The metal of the coating may be the same or different from the metal of the substrate.  Subsequently applied coatings, by penetrating into the coating of well defined surface morphology, and desirably locked onto the resulting metal article and provide enhanced lifetime even in rugged commercial environments.
Patent CA-2060427-C (CA)
Title: Optical functioning glass and apparatus using the same
Inventor: ONISHI MASASHI
IPC: G02F1/355
Filed: 1992-01-31
Granted: 1997-08-19
Abstract: An optical functioning glass for enabling optical amplification at 1.3-µm wavelength band or increasing efficiency of the amplification is disclosed.  The optical functioning glass contains Nd3+ as an active material and uranium, both of which are doped in a multi-component function glass serving as a host glass.          Since uranium is doped in the optical functioning glass, light emission of Nd3+ in the 1.06-µm wavelength band can be absorbed by uranium.  A decrease in efficiency of induced emission in a 1.3-µm wavelength band can be prevented, and an optical functioning glass suitable for optical amplification in the 1.3-µm wavelength band can be obtained.  When a fiber is formed using the optical functioning glass as a core, a low-threshold, high-gain fiber amplifier, fiber laser, and the like can be obtained.
Patent CA-2061144-C (CA)
Title: System for efficiently exchanging heat or cooling ground water in a deep well
Inventor: HARRELL JAMES ELTON JR
IPC: F24J3/08
Filed: 1992-02-13
Granted: 2002-05-28
Abstract: A novel ground water heat transfer system is provided for low cost and high efficiency heat pumps and includes a deep well filled with water. An insulating sleeve which is smaller than the diameter of the deep well is placed in the center of the deep well so as to separate the well water into two portions. A water pump is suspended preferably below the water level and pumps the water from inside the insulating sleeve to the space between the insulating sleeve and the wall of the deep well in a manner which eliminates the dynamic lifting head. In an open loop system the water from the pump is first pumped to an heat exchanger and returned to the space between the insulating sleeve and the wall of the deep well. In a closed loop system the water from the water pump is pumped directly into the space between the insulating sleeve and the wall of the deep well and the fluid supplied the heat pump is pumped through a closed loop which is submersed in the space between the insulating sleeve and the wall of the deep well.
Patent CA-2068488-C (CA)
Title: Hybrid public key algorithm/data encryption algorithm key distribution method based on control vectors
Inventor: PRYMAK ROSTISLAW
IPC: G09C1/00
Filed: 1992-05-12
Granted: 1998-05-19
Abstract: The  patent  describes  a  method  and  apparatus  for securely distributing an initial Data Encryption Algorithm (DEA)  key-encrypting  key  by  encrypting  a  key  record (consisting   of   the   key-encrypting   key   and   control information associated with that key-encrypting key) using a public  key  algorithm  and  a public  key belonging  to  the intended recipient of the key record.  The patent further describes a method and apparatus for securely recovering the distributed  key-encrypting  key  by   the   recipient  by decrypting the received key record using the same public key algorithm and private key associated with the public key and re-encrypting the key-encrypting key under a key formed by arithmetically combining the recipient's master key with a control vector contained in the control information of the received key record.   Thus the type and usage attributes assigned by the originator of the key-encrypting key in the form of a control vector are cryptographically coupled to the key-encrypting key such that the recipient may only use the received key-encrypting key in a manner defined by the key originator.  The patent further describes a method and apparatus to improve the integrity of the key distribution process by applying a digital signature to the key record and  by  including  identifying   information  (i.e.,   an originator identifier) in the control information of the key record.   The  integrity  of  the  distribution  process  is enhanced by verifying the digital signature and originator identifier at the recipient node.
Patent CA-2068587-C (CA)
Title: Information reading and recording using a scanning tunnel microscope
Inventor: SAKAI KUNIHIRO
IPC: G01B7/34
Filed: 1992-05-13
Granted: 1997-12-02
Abstract: There is disclosed an information recording/ reproducing apparatus utilizing a probe electrode and a recording medium, based on the principle of scanning tunnel microscope.  When a track groove on the recording medium is detected, the distance control between the probe electrode and the recording medium is suspended.  Consequently, the tip of the probe electrode does not enter the track groove, and is prevented from collision with the recording medium.   The scanning speed of the probe electrode can, therefore, be increased without the danger of such collision.
Patent CA-2074502-C (CA)
Title: Vaccines
Inventor: SPIBEY NORMAN
IPC: C07K14/145
Filed: 1991-01-25
Granted: 2001-07-17
Abstract: A recombinant adenovirus acting as a vector for an antigen-producing gene (e.g. a rabies glycoprotein gene) comprises a CAV-2 strain modified to contain the promoter-gene sequence within the region from the SmaI site close to the end of the invert-ed terminal repeat up to the promoter for the early region 4 (E4). To assist replication the recombinant virus is transfected into a cell line expressing Ela proteins. The recombinant virus is used for the production of a corresponding vaccine.
Patent CA-2084364-C (CA)
Title: Synchronous circuit
Inventor: ISHIHARA TOMOHIRO
IPC: H04J3/00
Filed: 1992-12-02
Granted: 1998-04-14
Abstract: A synchronous circuit includes a first block operating in synchronism with a first clock signal, and a second block operating in synchronism with a second clock signal having a frequency lower than that of the first clock signal.  The first block includes a frame synchronizing circuit for detecting a synchronous pattern contained in input data having a frame format having a supervisory control data part and an information part, the supervisory control data part including pointer information indicative of a beginning of the information part.  The first block includes a synchronizing unit for generating, from the synchronous pattern, a synchronizing control signal for synchronizing the second block operation with the first block operation.  The first block includes a pulse generator for generating a first frame pulse signal from the first clock signal and a second frame pulse signal having a frequency lower than that of the first frame pulse signal.  The second block includes an information part detecting unit for generating the second frame pulse signal from the second clock signal and the synchronizing control signal, the first frame pulse signal being synchronized with the beginning of the information part.
Patent CA-2084545-C (CA)
Title: Apparatus for monitoring bronchial electrocardiogram
Inventor: KAJIWARA NAGAO
IPC: A61F2/958
Filed: 1992-12-04
Granted: 1999-11-02
Abstract: An intrabronchial catheter has an inflatable balloon with the bronchial ECG lead electrodes. Upon inserting the intrabronchial catheter into the trachea or bronchus of a human body, air is supplied to the balloon so that the balloon is stably retained in the trachea or bronchus, thereby bringing the bronchial ECG lead electrodes in close contact with the internal wall surface of the trachea or bronchus so as to effectively monitor bronchial electrocardiogram.
Patent CA-2085316-C (CA)
Title: High impact strength polymer blends
Inventor: SIOL WERNER
IPC: C08L51/04
Filed: 1992-12-14
Granted: 2001-07-03
Abstract: This invention relates to high impact strength polymer blends containing at least two two-phase or multiphase polymers P1 and P2, which in turn contain at least one toughness phase A1 or A2 and at least one hardness phase B1 or B2. B1 and B2 differ in chemical structure and are thermodynamically compatible with one another. The polymer blend optionally contains another thermoplastic polymer B'3 and/or another two-phase or multiphase polymer P4 contain at least one toughness phase A4 and at least one hardness phase B4, provided that B'3 and/or B4 are different from B1 and B2 and are thermodynamically compatible with B1 and B2.
Patent CA-2086975-C (CA)
Title: Saw blade
Inventor: KULLMANN JOERG H
IPC: B23D61/02
Filed: 1993-01-08
Granted: 2000-01-18
Abstract: A saw blade having a basic body (1) and unset teeth (2 1, 2 2, ect.) has recurring cycles of teeth, each cycle having at least one group of teeth with a height decreasing from tooth to tooth and width at the same increasing. The teeth (2 1, 2 2, ect.)  are formed symmetrically with respect to a longitudinal center plane (8) through the basic body (1). The effective cutting edges or cutting-edge sections (6 1, 12 1; 14 1, 12 2, ect.) of all the teeth (2 1, 2 2, ect.)  are in each case formed by a jutting-out cutting edge, the inner section (6 1, 6 2, ect.) of which runs approximately perpendicularly with respect to the longitudinal center plane (8) and which is adjoined externally by a phase (7 1, 7 2, ect.)  inclined toward the basic body (1). The widest tooth (2 4) in the group of teeth has an angle greater than 90° between phase (7 4) and flank (10 4).
Patent CA-2087523-C (CA)
Title: Method of processing an image
Inventor: SHACKLETON MARK ANDREW
IPC: G07C9/00
Filed: 1991-07-17
Granted: 1997-04-15
Abstract: A method of processing an image comprising the steps of: locating within the image the position of at least one predetermined feature; extracting from said image data representing each said feature; and calculat-ing for each feature a feature vector representing the po-sition of the image data of the feature in an N-dimen-sional space, said space being defined by a plurality of reference vectors each of which is an eigenvector of a training set of like features in which the image data of each feature is modified to normalise the shape of each feature thereby to reduce its deviation from a predeter-mined standard shape of said feature, which step is car-ried out before calculating the corresponding feature vector.
Patent CA-2087838-C (CA)
Title: Communication receiver providing displayed operating instructions
Inventor: KUNG PATRICK S
IPC: G08B5/22
Filed: 1991-08-15
Granted: 1997-09-23
Abstract: A communication receiver (12) includes control elements (82) for controlling one or more operational receiver functions, and a table of receiver operating information describing the receiver operation being controlled which is stored in a memory (67) within the receiver (12). The receiver operating information for each operating function is recallable by the user for presentation on the receiver's display (84) which is normally used to display received messages. Locally and remotely, or over-the-air programmable, operational functions can be provided within the receiver (12). The table of receiver operating information stored in memory (67) describes the receiver functions which are currently programmed for operation. When new operational features are locally or over-the-air programmed, the corresponding receiver operating information is updated, and the user is sensibly alerted via an annunciator (80) of the operational changes.
Patent CA-2088461-C (CA)
Title: Method for determining the propagation time between a remote terminal station and a central terminal station in a point-multipoint bidirectional transmission network
Inventor: MARCEL FRANCOIS
IPC: H04B7/24
Filed: 1993-01-29
Granted: 1997-06-10
Abstract: This method including a measurement, by the central station (OLT), of the time interval separating a reference instant of transmission of information signals by the said central station, from the reception, by this central station, of a so-called positioning signal (SW) emitted by a remote station (ONT), a delay time after a reference instant of reception of the said information signals by this remote station, so that the said positioning signal is received, by the central station, within a time period, termed the positioning window, which is not allocated to the reception, by this central station, of information signals, is such that the said delay time is, for any one remote station, liable to vary over time from an initial value (Tri) such that the positioning signal is not necessarily received within the said window (Tf), and the said emission of positioning signal is then, for any one remote station, liable to be repeated, until the said positioning signal is actually received by the central station within the said window. 
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Patent CA-2090394-C (CA)
Title: Gas hold up tool for use in cased well boreholes
Inventor: GARTNER MICHAEL LEONARD
IPC: E21B47/10
Filed: 1993-02-25
Granted: 1999-09-07
Abstract: For use in a well producing mixed phase fluids and flowing up the cased well, a device for measuring the gas hold up fraction is disclosed.      Briefly a low energy gamma ray source irradiates the flowing fluid and counts are measured by a detector crystal. The metal casing shields the formations from the gamma radiation so that the detector response is determined primarily by the mixed phase fluids flowing in the well. By calibration, gas/liquid ratios can be measured for specific diameter casing.
Patent CA-2092124-C (CA)
Inventor: HOULE REJEAN
IPC: A63B59/70
Filed: 1993-05-11
Granted: 1999-12-28
Abstract: Un bâton de hockey pour les gardiens de but. Le bâton comprend un manche et une palette reliés par un épaulement. Un côté de la palette comprend un renfoncement, au niveau de l'épaulement, pour accommoder le doigt du gardien de but. Le haut du renfoncement a un crochet au bout arrondi à sa jonction avec l'épaulement pour retenir le doigt.
Patent CA-2092305-C (CA)
Inventor: SPADA ALFRED P
IPC: C07H19/16
Filed: 1991-09-25
Granted: 2003-02-11
Abstract: This invention relates to adenosine derivatives and analogs which possess adenosine agonist activity and are useful as anti-hypertensive and anti-ischemic agents, to pharmaceutical compositions including such compounds, and to their use in treating hypertension and myocardial ischemia, and to methods and intermediates used in the preparation of such compounds.
Patent CA-2096334-C (CA)
Title: Method for drying a particulate material
Inventor: ERIKSSON LENNART
IPC: F26B3/10
Filed: 1991-11-14
Granted: 2002-01-15
Abstract: In a method for drying a particulate material, the materi-al is supplied into a first drying conduit (5) where it is dried and transported to a first cyclone (6) by means of drying air. The material is separated from the drying air in the first cyclone (6). The separated material is supplied into a second drying conduit (17) where it is dried and transported to a second cyclone (18) by means of drying air. The material is separated from the drying air in the sec-ond cyclone (18). The drying air is discharged from the respec-tive cyclone (6, 18). The major part of the dating air dis-charged from the first cyclone (6) is conveyed to a condenser (11) so as to be subsequently supplied into the first drying conduit (5), while the remainder thereof is discharged. An amount of the drying air discharged from the second cyclone (18), which corresponds to this remainder, is conveyed to the condenser (11) to be supplied into the first drying conduit (5). The remainder of the drying air discharged from the second cyclone (18) is supplied into the second dying conduit (15). Are amount of fresh air, which corresponds to the remainder of the drying air discharged from the first cyclone (6), is supplied into the second drying conduit (17).
Patent CA-2097957-C (CA)
Inventor: LEVER ALFRED B P
IPC: G01N27/333
Filed: 1993-06-08
Granted: 2004-02-17
Abstract: A macrocyclic compound coated electrode may be used advantageously to detect and measure the concentration of sulfide in aqueous samples. The electrode is substantially unaffected by other interfering species which may be present in the aqueous sample. Use of the electrode provides for fast, accurate, on-line monitoring of sulfide concentration in aqueous effluents from, inter alia, pulp and paper plants, and oil and gas refineries.
Patent CA-2099170-C (CA)
Title: Congestion control in high speed networks
Inventor: COLE ROBERT G
IPC: H04L12/56
Filed: 1993-06-25
Granted: 1999-12-14
Abstract: Congestion control is implemented at the resources that actually suffer from congestion and, moreover the congestion control is performed within the network as well as at its access points. In a particular embodiment, congestion control is continuously performed at each resource. Use of each resource is controlled according to a head-of the-line weighted round-robin service discipline thereby assuring fairness and full use of bandwidth for all active channels. Also, in order to control conditions of congestion, the queue of data elements waiting for service at each resource is regulated by a global congestion indicator for the entire queue. The data elements of each channel that are waiting for service are further regulated in response to specific local congestion indicators that are individualized for each channel. The global and local congestion indicators are used to guarantee predetermined levels of service for each channel. The values employed for tie head-of the-line weighted round-robin service discipline are developed as a function of at least the contracted-for bandwidth for each channel. The developed values are replicated for each resource subject to congestion control.
Patent CA-2099837-C (CA)
Title: Extrusion die assembly
Inventor: JOHNSON ROGER D
IPC: B29C48/50
Filed: 1993-07-05
Granted: 1998-12-29
Abstract: An extrusion die assembly (10), adapted to be secured to the discharge end of an extruder (14), for producing extruded products having different sizes and/or shapes from a single extruder without interrupting the operation of the extruder. The die assembly includes a block (11) having an inlet duct to receive thermoplastic material discharged from the extruder, and a pair of discharge ducts which diverge axially from the inlet duct and terminate in a pair of spaced die plates (15, 16). A cylindrical diversion valve (38) is rotatably mounted in the die assembly at the convergence of the outlet ducts and the inlet duct, with the valve having an angled passage extending therethrough for directing the flow of thermoplastic material from the inlet duct into one of the outlet ducts. The diversion valve enables thermoplastic material to be diverted from one die plate to the other without interrupting the operation of the extruder.