baber/WOPTO huggingface dataset:
Patent CA-2091298-A1 (CA)
Title: Method and apparatus for increasing two tier macrocell/microcell subscriber capacity in a cellular system in which microcell access by a mobile is dependent on a mobile's vehicular speed
Inventor: BENVENISTE MATHILDE
IPC: H04W36/04
Filed: 1993-03-09
Abstract: A particular method for enabling the service of mobiles by a microcell, in a two tier cellular system, involves identifying a microcell coverage area and offsetting microcell signal strength for a time sufficient to allow a fast moving vehicle, desiring service and having entered the microcell serving area, to exit the microcell coverage area before the call is set up or handed off forcing the controlling macrocell to handle the call setup or handoff. Hence only the mobile radiotelephones of stationary and relatively slow moving vehicles are served by the microcell.      There is a substantial offset-coverage overlap period between the locations where a mobile may be found during the offset interval or duration of the apparent reduced signal strength of the microcell and the microcell coverage area. Calls that could be serviced by the microcell are instead serviced by the macrocell because the mobile radiotelephone responds to the strongest signal.      This loss in capacity is solved by reducing the offset-coverage overlap. Offset-coverage overlap is reduced by starting the offset or timed duration in response to a broadcast signal sent by the microcell at some predetermined point before the mobile enters the microcell coverage area and by increasing the length of the offset duration or interval by some predetermined increment to prevent service by the microcell to a vehicle exceeding a cutoff speed. Far slow moving vehicles then is a net shift to a reduced offset period within the microcell coverage area and hence proportionately more call setup and handoff requests of slow moving vehicles can be accommodated.      Service permissions for call setup with microcells may also be based on certain identification associated with mobile radiotelephones.
Patent CA-2091749-A1 (CA)
Title: Liquid density monitoring apparatus
Inventor: GLASSEY EUGENE A
IPC: G01N9/22
Filed: 1993-03-16
Abstract: [PATGGLAS92.C17]     ABSTRACT     A liquid bulk density monitoring apparatus which is particularly suitable for monitoring suspended sediment levels has a plummet suspended from one end of a balance beam and submerged in a vessel containing a liquid to be monitored.   A sensor detects tilting of the beam from a reference or balance position as a result of variation in the sample bulk density,  and produces an output to an output  device  for  recording  density  variations.    The apparatus is designed to compensate automatically for any changes in temperature, for example by making the plummet of a material having a coefficient of thermal expansion substantially the  same  as  that  of  the  liquid  being monitored.
Patent CA-2094360-A1 (CA)
Title: Fiber-optic amplifier with feedback-insensitive pump laser
Inventor: HEIDEMANN ROLF
IPC: H01S3/06
Filed: 1993-04-19
Abstract: Abstract Fiber-Optic Amplifier with Feedback-Insensitive Pump Laser Prior art fiber-optic amplifiers which are used in  a fiber-optic link to amplify the light signals to be transmitted have the disadvantage that the semicon-ductor lasers employed as pump lasers are highly sensitive to feedback, so that the stability of the light-signal transmission is impaired by pump light reflected back into the pump lasers.           According to the invention, the operating current for such pump lasers (4) contains a noise current, so that the pump laser emits its pump light in many modes, which makes it insensitive to feedback.   To prevent the noise component of the pump light which is caused by the noise current from affecting the amplification of the light signals to be transmitted, the noise cur-rent is filtered in such a way that its spectral components have frequencies which lie above the re-ciprocal lifetime of that energy level of the active laser medium which causes the amplification of the light signals.            (Fig. 1)
Patent CA-2097467-A1 (CA)
Title: Window blinds
Inventor: VAN DER WIELEN FRANCISCUS J
IPC: E06B9/262
Filed: 1993-06-01
Abstract: WINDOW BLINDS                           ABSTRACT         The blind has first pairs of planar members 21,22 hinged together at 23, and second pairs at 25,26 hinged together at 27, the members of one pair being connected to the members of the other pair by connectors 28,29 to form a zig-zag array and operating cords 42,43 pass through apertures 40,41 in the members, the cords passing freely through alternate members and physically engaging the other alternate members so that when longitudinal movement is between the cords 42,43 in one direction the first and second members are folded towards one another and the third and fourth members away from one another and when in the opposite direction the first and second members are folded away from one another and the third and fourth members folded towards one another to give two entirely distinct visual appearances.  At least some of the members may be translucent to give an effect similar to that of a venetian blind.
Patent CA-2097927-A1 (CA)
Title: Radionuclide labelled particles useful for radiation synovectomy
Inventor: NOSCO DENNIS L
IPC: A61K51/12
Filed: 1991-04-11
Abstract: Novel radiation synovectomy compositions and their use for ablating the inflamed synovium of the synovial joint of an individual suffering from arthritis.
Patent CA-2098164-A1 (CA)
Title: Bumpering device for bowling lanes
Inventor: GREINER BRIAN D
IPC: A63D5/00
Filed: 1993-06-10
Abstract: ABSTRACT OF THE DISCLOSURE          The present invention provides a new and improved bumpering system for guarding the channels (gutters) of a conventional bowling lane.  The bowling lane is of the type having a longitudinal bowling lane bed, a pair of elongated channels parallel to and abutting each side of the bowling lane bed, an approach and foul line at one end of the bowling lane bed and a pin deck at the other end thereof.  The bumpering device comprises deflection means permanently mounted within the channel, the deflection means having associated therewith extension and retraction means for extending the deflection means to an upright position thereby abutting the bowling lane bed for deflecting bowling balls that may be directed toward the channel and retracting the deflection means to a nested position within the channel thereby permitting bowling balls directed toward the channel to fall thereinto.
Patent CA-2105850-A1 (CA)
Title: Method and apparatus for producing metal objects
Inventor: MAJONEN HARRI
IPC: B22D1/00
Filed: 1993-09-09
Abstract: ABSTRACT OF THE DISCLOSURE         The present invention relates to a method and apparatus for producing a metal object, alloyed with at least one alloy ingredient, by means of casting.  According to  the  invention,  the principal  metal  and  the  alloy ingredient flows are conducted so that the alloy ingredient is fed into the flow of molten principal metal between a smelting furnace, used for smelting the principal metal, and a casting mould.
Patent CA-2108507-A1 (CA)
Title: Low-calory soluble glucose polymer and process for preparing this polymer
Inventor: DUFLOT PIERRICK
IPC: C13K1/00
Filed: 1993-10-15
Abstract: LOW-CALORY SOLUBLE GLUCOSE POLYMER AND PROCESS FOR     PREPARING THIS POLYMER                        ABSTRACT         The  invention  relates  to  a  soluble  glucose polymer predominantly composed of 1-6 bonds, having a content of reducing sugars of less than 0.5 %, as well as a content of products of molecular weight less than or equal to 182 g, of less than 1 %. The invention also relates to the process for preparing this glucose poly-mer,  consisting in subjecting a glucose polymer to a hydrogenation stage and to a molecular sieving stage so as to remove the products of molecular weightless than or equal to 182 g. (no figure)
Patent CA-2113396-A1 (CA)
Inventor: KIMURA ETSUJI
IPC: G01K1/10
Filed: 1994-01-13
Abstract: ABSTRACT OF THE DISCLOSURE      A refractory material is disclosed for use in protecting furnace components from extreme temperatures and which provides satisfactory erosion resistance against basic melts.  The refractory material includes a composite oxide having magnesium oxide as its main component, together with a secondary oxide which forms a high-melting-point composite oxide with magnesium oxide and iron oxides by reacting with iron oxides in a melt or calcined mass.  On contact with a basic melt, oxides in the melt combine with the magnesium oxide and secondary oxide of the refractory material to form a solid-solution composite oxide which covers the refractory surface and prevents penetration by the melt.  Bricks and tubes for use in smelting furnaces and the like which have been prepared having a layer of the composite oxide on a refractory substratum, exhibit excellent thermal shock resistance as well as erosion resistance against basic melts.
Patent CA-2114142-A1 (CA)
Title: Modem
Inventor: HEEP JERRY J
IPC: H04L29/10
Filed: 1992-06-30
Abstract: Method and apparatus for effecting mode switching from a transmission mode to a command mode of an intelligent modem operatively coupled to a digital data device and a telephone line is disclosed. A termination of the modem's transmission mode (400) is effected after a predetermined silent time interval (406) in which no data is received from the device and prior to the transmission of additional data on the line. Operation of the modem switches to a buffer mode (410) in which data sent from the device is temporarily stored instead of being transmitted on the telephone line. If the stored data is a proper escape sequence (424) operation of the modem switches to the command mode. If a proper escape sequence is not received, operation of the modem switches to a purge mode (418) in which the stored data is transmitted on the telephone line. The apparatus comprises a data interface, a novel modem controller and a modem engine. The modem controller (20) includes the data buffer (60) for storing the data received from the digital data device (22) when operating in the buffer mode.
Patent CA-2116823-A1 (CA)
Title: Assembly for converting in-line roller skate to ice skate
Inventor: SHING LAWRENCE
IPC: A63C17/18
Filed: 1994-03-02
Abstract: A conversion assembly for converting an in-line roller skate to an ice skate for use on ice. The roller skate is of a type having a boot with a sole and a frame structure mounted thereto. The frame structure includes two longitudinally extending, spaced apart parallel support members provided with at least three sets of transversely aligned bores longitudinally spaced apart thereon. At least three wheels are disposed longitudinally between the support members and rotatably mounted thereto by fastening means which includes a fastening element for extending through each wheel and related set of aligned bores in the support members.      The conversion assembly comprises a thin longitudinally extending skating blade having a sharp bottom edge adapted to engage the ice and at least three upstanding tab portions longitudinally spaced apart along the top thereof At least three sets of first and second clamping elements are adapted to be disposed between the support members in place of the wheels and have opposed clamping surfaces for frictionally engaging the tab portions.      The clamping elements are provided with aligned holes therein through which the fastening elements extend to securely clamp the skating blade to the frame structure.      The tab portions of the skating blade and the clamping elements have cooperative mating means to resist movement of the skating blade relative to the frame structure.
Patent CA-2121121-A1 (CA)
Inventor: ERDILE LORNE F
IPC: C12Q1/00
Filed: 1992-10-16
Abstract: Highly-purified immunologically-effected recombinant protein encoded by a gene of a full-length wild-type Borrelia lipoprotein, particularly the OspA encoded by the ospA gene of B.burgdorferi, useful in vaccines and test kits for Lyme disease, is prepared by inducing protein production from a host organism transformed by a plasmid vector containing the cloned gene and subsequently recovering and purifying the protein. The grown organism is lysed and contacted with a surfactant, particularly Triton X-114, which selectively extracts the desired protein from the lysed cells. Upon heating the resulting mixture to mildly-elevated temperature, a detergent phase separates out and is recovered separate from the other phases. The detergent phase is further purified from residual protein by column chromatography.
Patent CA-2121727-A1 (CA)
Inventor: WEISS PAUL
IPC: B23D79/00
Filed: 1994-04-20
Abstract: ABSTRACT OF THE DISCLOSURE     A tool provided with a head tapering stepwise toward a front side. Each step of the head has a cylindrical area for calibrating a pipe end and, joining it, a conical area for deburring the pipe end. Each step of the head corresponds to a usual pipe size. When the head is pushed into a pipe end to be processed, the pipe end is first calibrated and subsequently deburred in one operation. The pipe end is centered in relation to the longitudinal axis of the head due to the calibration at the cylindrical area, which guarantees accurate deburring at the conical area. Each conical area has a plurality of cutting edges, which are formed by chip grooves. The tool is especially suitable for preparing pressed connections on composite pipes.
Patent CA-2122567-A1 (CA)
Title: Bias control and method for electro-optic modulators
Inventor: LE PHAT
IPC: H04B10/524
Filed: 1994-04-29
Abstract: An electro-optical modulation system comprising optical modulator means for pulse-modulating an incoming light beam in response to a pulsed RF input signal and to a bias signal and for producing a pulse-modulated optical output which is characterized by a plurality of enveloped pulses, optical detector means (17) for producing an electrical signal which is representative of the output from the optical modulator means, average detecting means (19) for producing pulse envelope signals which are representative of the envelopes of the pulses, and a bias control circuit (20), using a plurality of pulse envelope signals, for producing the bias signal as a function of the pulse envelopes.
Patent CA-2123826-A1 (CA)
Title: Two way door security plate
Inventor: DONOVAN NORMAN
IPC: E05B13/00
Filed: 1994-09-07
Abstract: As in security systems this two way security door plate manually operated known to grasp inside face of door. Mould to contour of edge of door passing between door and door frame. Follow contour of door frameand across of door frame face three quarters of distance to an anchor plate, mounted on face of frame with door closed. Turn knob of existing lock to extract door bolt. Slide security plate down to hook into anchor plate on outside face of frame. RElease door knob allowing bolt to pass through hole in security plate and into existing striker plate of frame. Security plate is now locked into position and cannot be removed until existing door lock is open to retract existing door bolt allowing security plate to be raised up cut of anchor plate  and in turn allowing door to be opened. Remove moulded security plate. Set aside until needed again. This procedure can be used when leaving your home unattended or when at home. Security plate can be put into place from inside of home as well as from outside for added security when sleeping at night etc. A child could put this security plate in place when needed.
Patent CA-2124075-A1 (CA)
Title: Ultrasonic holography imaging method and apparatus
Inventor: GARLICK GEORGE F
IPC: G01H3/12
Filed: 1992-11-20
Abstract: A preferred embodiment of this invention is illustrated in Fig. 4 showing an offset and tilted object transducer (50) being rotated about a system axis (51) to sequentially insonify the object from various acute incident angles .THETA. to the system axis to pro-vide images of the out-of focus structures at spaced locations at the hologram detection surface (18) at different spaced times. If the pulse rate of the object transducer is greater than the fusion of the eye, the eye is able to average two or more images into a single perceived image. Likewise, video equipment that receives images at a rate greater than 30 Hertz will average two or more images and display the image at a rate of approximately 30 Hertz.  Additionally, external video processing may be utilized to elec-tronically average two or more images electronically to obtain an averaged image at any time constant desired by the operator. Such a system effectively neutralizes or blends the out-of-focus structure of an object spaced from a selected focus plane (27) while maintaining the structure within the plane in sharp consistent contrast to provide consistent, quality images of the internal structure of an object (12).
Patent CA-2124913-A1 (CA)
Title: Camera with an information display
Inventor: KIM SEONG-TAE
IPC: G03B7/08
Filed: 1994-06-01
Abstract: A camera with an information display and control method that enables a user to easily review camera functions and selectively use the functions.
Patent CA-2127890-A1 (CA)
Inventor: TEMPLE VICTOR ALBERT KEITH
IPC: H01L23/049
Filed: 1993-01-19
Abstract: A semiconductor device package (40) including a cup-like base (16) having an encircling side wall having at its upper end, a laterally, outwardly extending metal flange (2). A lid (44) for the package comprises a plate-like member (42) having, at the lower, peripheral edge thereof, an outwardly laterally extending metal flange (48) which overlaps and is bonded to the base flange in a solderless bond. In one embodiment of the invention, the lid has apertures therethrough which are sealed by metal foils bonded to the lower surface of the lid. The metal foils overlie and are bonded to electrodes on the upper surface of the chip within the package. In another embodiment of the invention, in which the lid also has apertures therethrough, a hollow tubing extends into each aperture in hermetic fit with the aperture wall. The chip within the package includes terminal leads extending into the tubings and hermetically bonded to the tubing inner walls.
Patent CA-2128107-A1 (CA)
Title: Radio coverage in closed environments
Inventor: KALLANDER STEFAN E P
IPC: H04B5/02
Filed: 1993-11-19
Abstract: ABSTRACT OF THE DISCLOSURE      A repeater system in a communication system including a base station and a mobile unit provides a communications link between the base station and the mobile unit when the mobile unit is located in an environment that is substantially closed off to high radio frequency communication between the base station and the mobile unit.  The repeater system has a first linear two-way frequency converter including a high frequency port for two-way coupling to the base station and a low frequency port for two-way coupling to a low frequency signal that is capable of distributing radio frequency power through the closed environment.  The low frequency port is connected to a cable which propagates and receives low radio frequency power within the closed environment.  The repeater system also includes a first antenna for wireless coupling to the cable, and a second linear two-way frequency converter having a low frequency port connected to the first antenna for two-way coupling to a low frequency signal and a high frequency port for two-way coupling to a signal that is compatible with the high radio frequency signal used by the communications system.  A second antenna is connected to the high frequency port of the second linear two-way frequency converter for wireless coupling of the second linear two-way frequency converter to a nearby mobile unit.
Patent CA-2129756-A1 (CA)
Title: Rotary fluid displacement apparatus
Inventor: HENNESSY DAVID
IPC: F01C20/14
Filed: 1993-02-10
Abstract: A rotary fluid displacement apparatus (100) with an orbiting toothed ring member (30) is shown with an improved casing (60) and rolling support between the faces of the valve discs (46,47) and the first arid second fluid transfer elements (21,35).  Particulary, needle bearings (106,112) ace sandwiched between thrust washers (108,114} and then between the valve discs (46,47) and the fluid transfer elements (21,35), with one of he needle bearings (106) being piloted in an annular groove (110) formed in the annular plate (23) of the first fluid transfer element (21) and the other of the needle bearings (112) being piloted on the hub (35) of the second fluid transfer element (35), The casing (60) includes two pieces, i.e. a generally cylindrical portion (62) and an end cap (64). The portion (62) includes four cavities (70, 72, 74, 76}, with the hub (35') of the second fluid transfer element (35) being in a sliding; rotatable, and sealing relation with the axially inner cavity (76) and the end cap (64} being in sliding and sealing relation with the axially outer cavity, (70). The end cap (64}  includes a cavity (90) for slideably, rotatably, and sealing receipt of the hub (24) of the first fluid transfer element (21). Fluid communication is allowed axially through the end cap (64) by an axially extending fluid conduit (94) intersecting with the cavity (90) of the end cap (64) and by an axially extending fluid port (98) which intersects with first and second axially extending fluid bores (82,96) formed in the generally cylindrical portion (62) and the end cap (64) which in turn intersects with a radially extending fluid conduit (80) terminating in the axially inner cavity (76).
Patent CA-2130288-A1 (CA)
Title: Method of making multi-segment plastic components
Inventor: BRESSLER ULRICH
IPC: B29L31/08
Filed: 1994-08-17
Abstract: A core ring assembly for use in production of a plastic injection-molded component is formed by injecting molten metal alloy into core dies to produce two intricately shaped ring type elements - one male, one female. Removing the male and female ring elements from the core dies and combining the two elements in an assembly machine to form a uniform, geometrically symmetrical, integral core ring assembly. The core ring assembly is transported to a plastic molding machine for overmolding the core ring assembly with either thermosetting or thermoplastic material. Then, the core assembly is melted out from the plastic component in a hot oil bath or induction melt-out, and the molten alloy recovered thereby is returned to a molten metal alloy tank for reuse.
Patent CA-2131288-A1 (CA)
Title: Prevention of Oxidation of Carbonaceous and Other Materials at High Temperatures
Inventor: SEKHAR JAINAGESH A
IPC: C04B41/50
Filed: 1993-04-01
Abstract: A body of carbonaceous or other material for use in corrosive environments such as oxidizing media or gaseous or liquid corrosive agents at elevated temperatures, in particular in molten salts such as cryolite, is coated with a protective surface coating which improves the resistance of the body to oxidation or corrosion and which may also enhance the bodies electrical conductivity and/or its electrochemical activity. The protective coating is applied in one or more layers from a colloidal slurry containing reactant or non-reactant substances, or a mixture of reactant and non-reactant substances, in particular mixtures containing silicon carbide and molybdenum silicide or silicon carbide and silicon nitride, which when the body is heated to a sufficient elevated temperature reaction sinter as a result of micropyretic reaction and/or sinter without reaction to form the protective coating.