baber/WOPTO huggingface dataset:
Patent CA-2080932-C (CA)
Title: Soliton generator
Inventor: KOROTKY STEVEN K
IPC: H04B10/18
Filed: 1992-10-20
Granted: 1997-11-11
Abstract: It has been determined that optical fibers possess a small amount of nonlinearity and, therefore, they are not exactly linear waveguides. This small amount of nonlinearity enables certain special pulse shapes to establish themselves and travel long distances without changing shape. These special pulse shapes arecalled solitons. This invention relates to a device for generating solitons by amplitude modulating an optical signal with separate in-phase electrical signals of different harmonically related frequencies. Specifically, an amplitude modulatorsuch as a Y junction Mach-Zehnder interferometer has multiple sets of distributed electrodes The interferometer has a set of electrodes for each electrical signal of a specific frequency. Thus, if three separate signals of harmonically related frequencies are used to amplitude modulate an optical signal, then the interferometer has three sets of electrodes located between the Y junctions of the Mach-Zehnderinterferometer. The structure of a separate set of electrodes for each of the signals results in a soliton generator which avoids the prior art problem of signal loss caused by combining many high frequency signals into a composite signal and the resulting need for a relatively expensive amplifier capable of uniformly amplifying the multi-octave composite signal.
Patent CA-2081149-C (CA)
Title: Integrated optical component
Inventor: DIEMEER MARTINUS BERNARDUS JOH
IPC: G02B6/126
Filed: 1992-10-22
Granted: 2000-09-12
Abstract: The invention relates to an integrated optical component which comprises an adjustable Mach-Zehnder interferometer. The waveguide structure of the component is fabricated on the basis of potable unpoled material, the material in one (2) of the branches (2, 3) of the MZ interferometer being poled in a certain area (7). In the case of maximum poling in advance, the degree of poling of the poled material can subsequently be adjusted under conditions of accelerated thermal relaxation. Advantage: the component can first be fabricated, as far as its structure is concerned, using fabrication techniques which are standard far the selected material without additional attention to correct sizing, after which the interferometer section can then be adjusted in a simple manner to the optical pathlength differences required for the specific function of the component. As an example, a passive polarisation splitter is described.
Patent CA-2082842-C (CA)
Title: Nucleic acid target generation
Inventor: WALKER GEORGE T
IPC: C12Q1/68
Filed: 1992-11-13
Granted: 2001-01-09
Abstract: The invention is a method for generating nucleic acid sequences ends which comprises; (a) hybridizing a primer to a nucleic acid sequence, (b) hybridizing a primer to the nucleic acid sequence in (a) located 5' to the primer in (a), and (c) polymerizing both primers so that the primer in (a) is displaced from the nucleic acid sequence.      The invention provides a method for generating target nucleic acid sequences for subsequent amplification. The method is applicable to both DNA and RNA.
Patent CA-2084082-C (CA)
Title: 1-pyperidinyl alkanoylarysulfonamide derivatives
Inventor: CARR ALBERT A
IPC: A61K31/451
Filed: 1991-05-15
Granted: 2002-03-19
Abstract: The present invention is direct to a new class of 1-piperidinyl alkanoylarylsulfonamides and their use as antiarrhythmic agents.
Patent CA-2086516-C (CA)
Inventor: BUCHHOLZ DONALD H
IPC: A61K35/18
Filed: 1992-04-27
Granted: 2002-11-12
Abstract: A blood processing method provides a red blood cell product that is free of microorganisms like Yersinia enterocoli-tica during storage periods over 24 hours. The red blood cell product is collected in a first container (16), where it is refrige-rating to cool the blood product to a temperature of about 3 to degrees C. The refrigerated product is transferred from the first container (16) into a storage container (34) through a pre-scribed filter medium (44) that comprises a mass of synthetic fibers having an average fiber diameter of about 10 microns or less and a bulk density of about 0.7 gram per cubic centimeter or less. The filtered product is retained in the storage container (34) at a temperature of about 3 to 5 degrees C for a storage pe-riod over 24 hours after filtration. Using the filter medium (44), microorganisms like Yersinia enterocolitica present in the red blood cell product at the time of collection are depleted. The filtered blood product remains free of clinically significant numbers of microorganisms throughout refrigerated storage up to time of transfusion:
Patent CA-2089852-C (CA)
Title: Foamed polyvinylchloride saddle-cloth
Inventor: ARNOLD SIDNEY ARTHUR
IPC: B68C1/12
Filed: 1993-02-12
Granted: 2005-05-10
Abstract: A saddle-cloth for interposition between an animal's back and a saddle comprises a layer of foamed polyvinylchloride of a density of between 130 and 160 kg/m3. One side of the layer has a plate finished surface. When the saddle-cloth is placed on a horse the plate finished surface is juxtaposed the horse's back and it remains in frictional engagement with the horse's back even when the horse warms-up and begins to sweat. The other side of the mat retains good frictional contact with the saddle thus substantially preventing any slippage of the saddle on the horse's back. Typically, the mat is between 4 and 12mm thick and is shaped and configured to conform generally to the lower surface of the saddle, whether it be a racing saddle, a show jumping type saddle a rodeo or western style saddle or any other type of saddle.
Patent CA-2089893-C (CA)
Title: Hearing protective earplug having alternative modes of insertion
Inventor: GARDNER ROSS JR
IPC: A61F11/10
Filed: 1991-08-16
Granted: 1998-12-22
Abstract: A hearing protective earplug which permits alternative push-in and roll-down modes of insertion. The earplug (100) includes a soft, smoothly contoured, resilient, homogeneous viscoelastic polymeric foam main body element (1) adapted in size and shape to be inserted into a human ear canal, and an elongate stem (10) extending rearwardly and outwardly therefrom. In one embodiment, the main body element (1) transitions into a terminal flared end portion (12) lying at the outboard end. The stem (10) is typically of such length that the free end (9) thereof extends beyond the body element (1).
Patent CA-2098132-C (CA)
Inventor: LOWE GRAHAM DESMOND
IPC: B01D46/52
Filed: 1993-06-10
Granted: 2000-10-17
Abstract: A heat and moisture exchange filter comprises a layer of hydrophobic media together with a layer of a hydrophilic media. The filter may be used in the medical field in open breathing systems with the hydrophilic material downstream of the patient in the exhalation path. The hydrophobic material prevents the passage of water droplets and globules in known manner and also has a bubble point sufficiently high to trap micro-organisms. The hydrophilic material captures water vapour that passes through the hydrophobic material thereby allowing more moisture to be retained by the filter. This moisture is picked up by the inhaled gases and serves to provide additional humidity for the inhaled gases.
Patent CA-2099135-C (CA)
Inventor: TJUGUM ODD
IPC: C04B24/22
Filed: 1991-12-30
Granted: 2002-09-17
Abstract: In a method for blending of admixtures in a concrete mass which is transported through pipes/hoses to a casting site and in which the mass shall have a consistency which is suitable for casting of the mass on wall or roof surfaces there are used admix-tures consisting of two components which react with each other. The two components are mixed into the mass at different points in time, possibly in combination with normally used additional admixtures for the mass.
Patent CA-2099804-C (CA)
Inventor: FRANO FRANCIS G
IPC: A44B11/26
Filed: 1993-07-05
Granted: 1996-10-22
Abstract: A buckle including a female receptacle member having a tubular body, an interior channel therethrough and being open to the channel on a portion of the tubular body, a male latch member having at least one arm member for insertion within the channel through the open end of the female receptacle member and a latch member formed between the tubular body and the arm member for releasable locking engagement of the tubular body and the arm member upon insertion of the arm member within the channel and for providing a resistance force in opposition to and alignment with an arm member removal loading force between the tubular body and the arm member.
Patent CA-2100088-C (CA)
Inventor: GYGAX RALPH ALLEN
IPC: B65D1/02
Filed: 1992-05-14
Granted: 1998-06-16
Abstract: A retortable high panel strength plastic container (10) that includes a sidewall (11) and a bottom wall (12). The container (10) has a recessed circular center portion (17) in the bottom wall (12) that is designed to facilitate the volumetric changes that occur in the container during sterilization. These volumetric changes occur with out catastrophic failure. Examples of containers having this feature are disclosed as well as the cross-sectional profile of the recessed circular center portions of the bottom walls of the containers.
Patent CA-2100669-C (CA)
Inventor: BISHOP ARTHUR ERNEST
IPC: B62D5/083
Filed: 1992-04-30
Granted: 1996-06-04
Abstract: A hydraulic power steering rotary valve of generally conventional construction characterized in that the on-centre charac-teristics of the valve are governed by an arrangement of rolling elements (22) and notched elements (10, 20) arranged to produce a detent action between the input shaft (1) and the sleeve or driven member (2), the rolling elements (22) rolling between opposite surface contours of a pair of opposed notched elements (10, 20), the contours each including a convex surface the shape of which is such that a centering torque between the input shaft (1) and the sleeve or driven member (2) is produced which decreases for increasing amounts of rotation away from a neutral condition of the rotary valve.
Patent CA-2102275-C (CA)
Inventor: EBELING KEITH R
IPC: B25H3/06
Filed: 1993-11-02
Granted: 2003-01-07
Abstract: A plate-like device has six recesses in its top surface for holding in face up relation a set of six commonly used micrometers of from 0-25.4 mm (0-1") through 127.0-152.4 mm (5-6"). The width and length dimensions of the holder are approximately 187.325 mm (7-3/8") by 625.476 mm (24-5/8"), respectively, and the recesses are specifically arranged to be contained in an area of this size as well as being arranged in continuously ascending order from one end to the other. The particular dimensions of the device allow it to be inserted in and removed from a conventional tool box drawer in a snug fit.      It is rigid so as to be self-standing and supporting when out of a tool box drawer and has finger notches for manual handling and removal and a side edge taper and bottom edge rounding for efficient insertion and removal relative to a drawer. The top surface of the device also has auxiliary recesses for holding calibrating standards and one or more adjusting wrenches. Finger wells are provided in the recesses to facilitate clearance for grasping the items in the recesses.
Patent CA-2102505-C (CA)
Inventor: LAURO GEORGE L
IPC: G01C21/00
Filed: 1992-04-17
Granted: 1995-11-14
Abstract: An electronic direction finder (10) includes a navigation receiver (28) and a compass (32) to generate a bearing signal that indicates that direction of a desired destination. The bearing signal is received by a display driver (34) which causes an electronic display (14) to generate a visible image of a rotatable pointer that points in the direction of the user's desired destination. Prefer-ably, the display also shows an electronic compass card indicating the direction of north.
Patent CA-2105381-C (CA)
Title: Target channel verification in a radiotelephone system
Inventor: HULSEBOSCH THOMAS G
IPC: H04W36/08
Filed: 1992-02-25
Granted: 1998-05-05
Abstract: A radiotelephone system verifies the carrier/interference (C/I) of a selected target channel before handoff. The subscriber (125), communicating to a source base-station (130) on a source channel, measures the received signal strength indication (RSSI) of a target channel at a target base-station (135) when the channel is keyed (transmitting) and dekeyed (not transmitting). The subscriber (125) transfers the measurements to a source base-station (130) which determines the ratio of the RSSI with the keyed channel (C) to the RSSI with the dekeyed channel (1). If the ratio is greater than a predetermined threshold, the source base-station (130) transfers the subscriber (125) from the source channel to the target channel at the target base-station (135).
Patent CA-2106774-C (CA)
Title: Method for the preparation of feed pellets
Inventor: HAMSTRA REINDER SIETZE
IPC: A23K20/179
Filed: 1993-01-25
Granted: 2005-01-04
Abstract: The present invention discloses a method for obtaining feed pellets. The method comprises the addition of active ingredients to feed pellets after the pellets have been extruded. The method further comprises the addition of a solution or suspension of the desired feed or ingredient in a water or oil phase to the pellets under reduced pressure and subsequently increasing the pressure. The method results in pellets with a high degree of loading and in which the active ingredients are homogeneously distributed.
Patent CA-2108853-C (CA)
Inventor: JOHANSON JERRY R
IPC: E04H7/26
Filed: 1993-10-20
Granted: 2003-09-09
Abstract: In a chip bin or similar cylindrical upright vessel for storing particulate material the interior generally vertical wall of the vessel has a surface configuration which reduces compression of particulates within the vessel so as to substantially prevent pluggage or particulate bridging. Three or more right circular cane frustums having a larger diameter at higher portions than at lower portions are provided along the interior generally vertical, either one immediately adjacent the other without significant spacing between them, or in a discontinuous manner being spaced from each other a significant distance. The frustums ensure that the vertical pressure level throughout the vessel is less than about 250 psf (e.g. less than about 200 psf). The vessel may be constructed of concrete using slip forms, with the concrete providing both the exterior and interior of the vessel, or a steel shell may comprise the exterior. The bottom of the vessel includes a hopper, or a vibrating discharge, and if the vessel is a chip bin steam is added at various points within the vessel.
Patent CA-2117588-C (CA)
Title: Hydrogels photopolymerisables, biodegradables utilises comme materiaux de contact tissulaire et vehicules a liberation controlee
Inventor: PATHAK CHANDRASHEKHAR P
IPC: A61K35/12
Filed: 1993-03-01
Granted: 1998-08-25
Abstract: L'invention porte sur des hydrogels de macromères polymérisés et réticulés, renfermant des oligomères hydrophiles avec des extensions monomères ou oligomères biodégradables; ces dernières sont terminées sur leurs extrémités libres par des monomères ou des oligomères polymérisables et réticulables. Le noyau hydrophile peut lui-même être dégradable, combinant ainsi les fonctions de noyau et d'extension. Les macromères sont polymérisés par des radicaux libres, initiateurs, sous l'effet d'un rayonnement UV de grande longueur d'onde, par excitation à la lumière visible, ou encore par application d'énergie thermique. La biodégradation intervient au niveau des liens à l'intérieur des oligomères d'extension et produit des fragments non toxiques, facilement éliminés par l'organisme. Parmi les applications les plus intéressantes pour ces hydrogels, on peut citer la prévention de processus d'adhérence indésirables après des interventions chirurgicales, la libération prolongée de médicaments et d'autres espèces bioactives, la protection temporaire ou la séparation de surfaces de tissus, l'adhérence de tissus de scellage, et la prévention de la fixation de cellules aux surfaces de tissus.
Patent CA-2123197-C (CA)
Title: Vacuum sizing apparatus with controlled vacuum
Inventor: PREIATO ERNEST J
IPC: B29C48/90
Filed: 1994-05-09
Granted: 1998-02-10
Abstract: TITLE: Vacuum Sizing Apparatus With Controlled Vacuum ABSTRACT: A vacuum sizing apparatus with a controlled vacuum is provided.  The vacuum is precisely controlled by the use of a variable speed motor driven vacuum pump and a step motor controlled vent valve.  An electrical circuit containing a mirco-processor coordinates the speed of the motor driven vacuum pump with the position of the vent valve to give precise vacuum control within the vacuum chambers of the sizing apparatus.  A closed sump tank contains water for the water system of the apparatus and is maintained at the same vacuum level as the vacuum chambers within the sizing apparatus.
Patent CA-2125973-C (CA)
Inventor: VANCE JEFFREY D
IPC: A61B17/22
Filed: 1992-12-02
Granted: 1998-04-28
Abstract: An atherectomy catheter device (10) provided with an improved high speed rotatin g cutting head (17) is disclosed in which the cutting head has a generally ovalshaped nose portion which includes a plural ity of radially disposed excising openings (24) extending along and rearward from a point near the center of the nose. The openi ngs are elongated but do not extend beyond the elliptical portion of reduced diameter, and, therefore, do not damage the lining of the vessel involved.
Patent CA-2128978-C (CA)
Inventor: ROSEN HAROLD A
IPC: B64G1/28
Filed: 1994-07-27
Granted: 1999-09-14
Abstract: A  system  and  related  method  is  provided  for  rapidly repointing spacecraft through the application of a high torque, of a gyroscope in which braking means  (20,  22) provided on a gimbal (16, 18) is actuated simultaneously with the actuation of the  torque  motor  (24,  26)  to  achieve  amplification  of  the control moment imparted to the gyroscope (10).  Because only one brake  (20,  22) may be actuated at a time in a double gimbal gyroscope system having a single spin wheel (12), actuation of the brake  (20,  22)  for each of  the  two axes  is  sequential. However  in a system having redundant torque motors  (24,  26), re-pointing  of  the  spacecraft  may  be  achieved  using  the simultaneous  braking  and  torque  application  method  of  the present  invention  without  increasing  the  repointing  time  by applying torque to a gimbal (16) rotating about one axis of the first spin wheel (12) at the same time that torque is applied to a  gimbal  (18)  rotating  around  the  orthogonal  axis  of  the redundant spin wheel (12).
Patent CA-2131339-C (CA)
Title: Electronic power converter circuit arrangement and method for driving same
Inventor: GERSTER CHRISTIAN
IPC: H02M1/088
Filed: 1994-09-01
Granted: 2005-02-08
Abstract: A method and a device for driving a series circuit of power semicondutor switches (2) are specified. In this case, the voltage loading of the individual switches of the series circuit is balanced by providing that the voltage (Ucel ... Ucen) across each switch of the series circuit is measured as the controlled variable, and that this measured voltage is used to vary the switching instants in such a way that the voltage loading during switching is essentially equal for all the switches. In addition, the level of the control voltage (Ugeoff1 ... Ugeoffn) in the blocking state can be influenced with the aid of the measured voltage in such a way that the blocking voltages of the switches are essentially equal. The advantage of the invention is to be seen in that the voltage loading of the individual semiconductors can be balanced not only during switching, but also in the blocking state. In addition, the control also balances influences of parameter differences and parameter changes, as well as influences of the circuit. As a result, the switches can be optimally utilized in terms both of power and of frequency.
Patent CA-2135786-C (CA)
Title: Improved drilling arrangement and method
Inventor: MCINNES MALCOLM BICKNELL
IPC: B25D17/06
Filed: 1993-05-12
Granted: 2005-12-20
Abstract: A drilling arrangement is provided having a reciprocating piston hammer which hammers a drill bit for hydraulic down-the-hole piston hammer drilling. The drilling arrangement uses a liquid for driving the reciprocating piston hammer with respective impacting facing surfaces between the hammer and the drill. The respective impacting facing surfaces are formed such that at the moment of impact some of the liquid is forced between the impacting surfaces. This substantially reduces if not eliminating altogether the cavitation which might otherwise develop.
Patent CA-2138519-C (CA)
Title: New lipase variants for use in detergent applications
Inventor: VAN DER LAAN JAN METSKE
IPC: C12N1/21
Filed: 1994-04-27
Granted: 2007-06-12
Abstract: Modified lipases are disclosed whereby at least the methionine at a position corresponding to position 21 in wild-type Pseudomonas pseudoalcaligenes lipase is substituted by another amino acid, which lipases exhibit a desired property change, in particular improved wash performance. Preferred embodiments are substitutions of said methionine by leucine, serine or alanine.
Patent CA-2144378-C (CA)
Inventor: FITZPATRICK JOHN
IPC: E02B17/02
Filed: 1995-03-10
Granted: 2000-03-21
Abstract: An offshore structure is disclosed for placement on a sea floor foundation located in a body of water containing moving ice masses and water waves. The offshore structure has a foundation base which contacts the sea floor foundation and at least three stepped stages which are stacked above the foundation base. Each stage has an outer hull to engage moving ice masses and water waves. Additionally, each stage has an outer horizontal diameter which is smaller than the outer horizontal diameter of the stage immediately below it.
Patent CA-2144970-C (CA)
Title: Bus management method
Inventor: MATSUNO KATSUMI
IPC: H04L12/64
Filed: 1994-07-19
Granted: 2004-09-28
Abstract: A bus management node 11 has a register for channels in use REG1 and a bus capacity register REG2. Before starting the synchronous communication, each node 12 transmits a read-out command to the register for channels in use REG1 and the register for channels in use REG1 in order to read out their contents for ascertaining the number of the un-used channel and the residual capacity. If there is any un-used channel and any residual bus capacity, the node 12 transmits write commands to these registers REG1 and REG2 so that the number of the channel to be in use and the capacity of the bus to be in use will be stored in the register for channels in use REG1 and the bus capacity register REG2. This enables bus management to be achieved easily in a system performing synchronous communication between plural nodes connected to the bus.
Patent CA-2146453-C (CA)
Inventor: COLEMAN JOHN E
IPC: B65D21/02
Filed: 1993-11-04
Granted: 2002-12-31
Abstract: For convenient packaging of plastic bookbinding strips (16), cassettes which may be securely stacked one upon the other are provided. The end edges of each strip are received in chan-nels (50) formed in opposed side rails (110). The rails are att-ached to transverse spacer bars (120) which are preferably deta-chably connected to the side rails and are interchangeable to accomodate strips of different lengths, e.g., 8 1/2 inches, 11 inches, etc. Cassettes may be securely stacked one upon the other by mating stack struts (23, 25) extending upward and downward, respectively, from the side rails. Very short stacking struts may be used when packaging flat female binding strips in the cas-sette. The cassette is especially useful in equipment which me-chanically assembles punched sheets and strips preparatory to binding a book in a machine. Projections (15) from the side rails may be used by such equipment to guide and center the cassettes within the machine.