baber/WOPTO huggingface dataset:
Patent CA-2105118-C (CA)
Title: Stereoscopic display apparatus
Inventor: SATO NORIKO
IPC: G03H1/22
Filed: 1993-08-30
Granted: 1999-01-05
Abstract: A space light modulating apparatus and a stereoscopic display apparatus which are used in a rewritable hologram stereoscopic display.  A solid image can be properly displayed by a phase distribution of a low spatial frequency.  A plurality of flat space light modulating units each having a predetermined area for converting a wave front conversion while setting a position near the position of a cross point (center position) of a normal line from a virtual display surface of a non-flat shape to display the phase distribution into a producing position of a solid image are arranged along the virtual display surface such as cylindrical surface or spherical surface.
Patent CA-2106870-C (CA)
Inventor: BORTAS MATS OLA
IPC: H01B11/10
Filed: 1993-01-08
Granted: 2001-12-11
Abstract: The present invention relates to an electric cable which includes at least one cable part and at least one shield which surrounds at least one cable part, and which further includes a plastic or a rubber sheath which embraces the cable part or parts and the shield, wherein each cable part includes a conductor made of copper wire or some other electrically conductive material, and a plastic or a rubber insulating layer. According to the invention, the shield is comprised of one or more prefabricated, woven or braided bands which are placed longitudinally around the cable part or parts. The total width of the shield band or bands is roughly equally as large as the perimeter of the underlying construction.
Patent CA-2111040-C (CA)
Inventor: WATERMAN DAVID J
IPC: G01G13/00
Filed: 1993-12-09
Granted: 1999-04-13
Abstract: A method and apparatus is disclosed for use in weighing products having circular or oval footprint configurations.   A conveyor having a pair of parallel conveyor elements arranged to underengage the footprint only adjacent the periphery thereof transports the products one at a time across a planar surface of a weigh pan or scale device.  The surface of the weigh pan is shaped and the transverse spacing between the conveyor elements is adjustable in order to permit lengths of the surface of the weigh pan engaged by the conveyor elements to be selected to correspond essentially to dimensions of differently sized products to be weighed.
Patent CA-2114579-C (CA)
Inventor: DE SOUZA EULER M
IPC: G01B7/16
Filed: 1994-01-31
Granted: 2005-04-12
Abstract: Apparatus for detecting or measuring movements in geological and other formations and capable of carrying out such measurements on a three-dimensional basis. The apparatus has a housing acting as a support and an elongated arm, e.g., a stiff measuring rod of adjustable length, projecting from the housing and acting as a movement following element. One end of the rod is secured within the housing by sliding and pivoting connections so that the remote end of the rod may move freely in three dimensions relative to the housing. Three movement sensors are positioned within the housing. A first one of the sensors measures translational motion of the rod in the axial direction. A second sensor measures rotation of the rod about the pivot in a first plane. A third sensor measures rotation of the rod about the pivot in a second plane which intersects the first plane at right angles. The first movement sensor is preferably a linear potentiometer and the second and third sensors are preferably rotary potentiometers. The signals from the sensors may be subjected to mathematical transformations for conversion to spatial positions of the remote end of the rod, making it possible to detect and measure three-dimensional ground displacements.
Patent CA-2121122-C (CA)
Inventor: ZOVATH PETER J
IPC: H01H9/08
Filed: 1992-10-15
Granted: 1999-03-16
Abstract: An arrangement is provided which is associated with a shaft of a device for indicating an operative or an inoperative state for the device. The arrangement includes a switch mechanism including a unitary enclosure having a cavity and a magnetic proximity switch in the cavity for producing electrical signals upon actuation thereof. A mounting assembly is provided for supporting the switch mechanism as a unit. A shaft position indicator and control structure is associated with the mounting assembly and the switch mechanism and such structure includes magnetic elements. Structure is provided for coupling the shaft position indicator and control structure to the shaft of the device. The unitary enclosure of the switch mechanism substantially encloses the cavity and the proximity switch in the cavity. The mounting assembly includes structure for positioning the switch mechanism in the vicinity of the magnetic elements of the shaft position indicator and control structure. The shaft position indicator and control structure further includes structure which is connected to the shaft coupling structure for rotating the magnetic elements of the shaft position indicator and control structure to cause the magnetic elements of the indicator and control structure to travel adjacent to the magnetic proximity switch of the switch mechanism for actuation of the switch upon movement of the shaft of the device during the operative state of the device.
Patent CA-2127859-C (CA)
Inventor: ECKERT C EDWARD
IPC: B22D41/54
Filed: 1994-07-12
Granted: 2005-12-06
Abstract: Disclosed is an improved casting tip (14) for a nozzle of a continuous caster, the tip designed for transferring molten metal (4) from a molten metal reservoir (2) to a continuously advancing mold as formed, for example, by twin belts (18), rolls (24) or block casters (28) for casting molten metal into solid form (22). The casting tip (14) is comprised of a top wall (44). a bottom wall (46) oppositely disposed from the top wall, a first side wall, and a second side wall oppositely disposed from the first side wall, the first and second side walls joined to the top and bottom walls to form a passage therebetween having an entrance and an exit. The passage has a top wall inside surface (52) having a first portion (56) that first converges towards the bottom wall starting at the entrance and has a second portion (60) that diverges from the bottom wall to the exit, the top wall first portion having a length less than the top wall second portion length. Further, the passage has a bottom wall inside surface (54) having a first portion (58) that first converges towards the top wall starting at the entrance and has a second portion (62) that diverges from the top wall to the exit, the bottom wall first portion having a length less than the bottom wall second portion length. The top wall and bottom wall converge and diverge about substantially an equal amount from a center line from the entrance to the exit of the passage.
Patent CA-2130070-C (CA)
Title: Ring interworking between path-switched ring transmission systems
Inventor: KREMER WILHELM
IPC: H04L12/46
Filed: 1994-08-12
Granted: 1999-11-02
Abstract: The possibility of passing off apparent "good" higher level digital signals that may include corrupted or failed lower level digital signals because of inter-ring grooming of the lower level digital signals from one path-switched ring to another path-switched ring employing at least a first shared node and a second shared node is minimized by dual feeding communications circuits from one path-switched ring to the other via the shared nodes and by provisioning at least one inter-ring groomed communications circuit from a secondary ring node of one of the shared nodes (secondary communications circuit) of a particular ring to be supplied to a primary ring node in the other shared node of the same ring. The at least one secondary communications circuit is obtained in the primary ring node and demultiplexed so that the lower level digital signals in the at least one communications circuit can be evaluated on a one-to-one pairwise basis with corresponding lower level digital signals in the corresponding at least one communications circuit (primary communications circuit) being supplied from the inter-ring grooming apparatus associated with the primary ring node. The the "best" of the lower level signals in each are selected and are combined into a "new"  primary communications circuit which is dual fed in the primary ring node in one direction to its termination ring node and in the other direction through the secondary ring node to the termination ring node. transmission path. A selector in the secondary ring node is revertively biased to normally select the "new" primary communications circuit to be supplied to the termination ring node. However, in the case of a primary communication circuit failure because of an interconnect or other failure in the primary ring node, the selector will then select the secondary communication circuit to be supplied to the termination ring node for the primary ring node.  The provisioning of the primary ring node and the secondary ring is such that the demultiplexing to obtain the lower level digital signals, their evaluation and selection, and multiplexing only need to be done in the primary ring node and not in both.
Patent CA-2134926-C (CA)
Title: Method and apparatus for ablative processing of elastomeric products
Inventor: WILER DONNA M
IPC: B44B7/00
Filed: 1994-11-02
Granted: 2006-04-25
Abstract: A method and an apparatus for ablating selected surfaces of an elastomeric product or an attached work piece. A tire is positioned beneath a laser system such that a laser beam is cast upon the tire sidewall or applied work piece. A microprocessor controls the directing of the laser beam and the position of the tire with respect thereto such that various informational and/or decorative designs and configurations may be ablated into the surface impinged by the laser beam. The dwell time of the laser beam upon the surface and other factors control the depth of ablation. In certain embodiments of the invention, a multi layered work piece is employed such that the depth of ablation will correlate to contrasting or complimentary colors or will effect a desired relief appearance.
Patent CA-2135791-C (CA)
Title: Method and apparatus for performing inbound calling in a wireless communication system having fixed communication units coupled to a telephone system by a telephone line shared in common
Inventor: PICKERT WILLIAM FREDRICK
IPC: H04M11/00
Filed: 1993-05-12
Granted: 2000-04-18
Abstract: A method and apparatus handles an incoming call and performs hand-off in a wireless communication system including a portable communication unit (PCU](120) having a PCU identification code, and fixed communication units (FCUs] (102) having radio coverage areas (108, 110, 112) associated therewith. The FCUs (102) are coupled to a telephone system (114) by a telephone line (116) shared in common by the FCUs (102) for handling calls to and from the PCU (120), and the PCU (120) is associated with the telephone line (116) for receiving the incoming call. The FCUs (102) are coupled to the telephone line (116) in response to the incoming call, and signals are transmitted thereafter from the FCUs (102) for establishing a wireless communication link with the called PCU (120). The link is established between one of the FCUs (102) and the called PCU (120) in response to the one of the FCUs (102) receiving a responding transmission from the called PCU (120). Thereafter, the link establishment signals transmitted from the FCUs (102) are ended.
Patent CA-2142553-C (CA)
Inventor: MILLER JEREMY PAUL
IPC: A23L3/36
Filed: 1995-02-15
Granted: 2001-04-17
Abstract: A turbulence inducing fan blows cold gaseous nitrogen through ducts disposed to either side of a conveyor carrying product to be frozen through a freezing tunnel.      The cold gaseous nitrogen is deflected downwardly onto product on the conveyor by a baffle having, in cross section, the form of a cusp. The cold gaseous nitrogen forms two counter-rotating vortex. The cold gaseous nitrogen travels across the product and then passes into an intake cowl primarily via inlets disposed adjacent both edges of the conveyor. The intake cowl collects the cold gaseous nitrogen which is sucked into the intake of the turbulence inducing fan. This arrangement provides excellent heat transfer to the product being frozen.
Patent CA-2145222-C (CA)
Title: Multistandard video decoder and decomposition system for processing encoded bit streams including start codes and methods relating thereto
Inventor: WISE ADRIAN PHILIP
IPC: H04N7/50
Filed: 1995-03-22
Granted: 2002-09-10
Abstract: A pipeline video decoder and decompression system handles a plurality of separately encoded bit streams arranged as a single serial bit stream of digital bits and having separately encoded pairs of control codes and corresponding data carried in the serial bit stream. The pipeline system employs a plurality of interconnected stages to decode and decompress the single bit stream, including a start code detector. When in a search mode, the start code detector searches for a specific start code corresponding to one of multiple compression standards. The start code detector responding to the single serial bit stream generates control tokens and data tokens. A respective one of the tokens includes a plurality of data words. Each data word has an extension bit which indicates a presence of additional words therein. The data words are thereby unlimited in number. A token decode circuit positioned in certain of the stages recognizes certain of the tokens as control tokens pertinent to that stage and passes unrecognized control tokens to a succeeding stage. A reconfigurable decode and parser processing means positioned in certain of the stages is responsive to a recognized control token and reconfigures a particular stage to handle an identified data token. Methods relating to the decoder and decompression system include processing steps relating thereto.
Patent CA-2148583-C (CA)
Title: Viscoelastic surfactant based foam fluids
Inventor: WATKINS EDWARD K
IPC: C09K23/00
Filed: 1992-11-04
Granted: 2001-01-30
Abstract: A foam-fluid composition for use in foam fracture applications and foam slurry transport comprises a thickening amount of a viscoelastic surfactant composition, a functionally effective amount of a surfactant composition capable of forming a foam, and an aqueous liquid. Foam-fluid formulations are easily prepared, reusable, shear stable, easily pumped and form stable foams over a wide temperature range and exhibit high viscosities even at relatively high temperatures.
Patent CA-2152324-C (CA)
Inventor: HINING LARRY DEMAR
IPC: A01D78/00
Filed: 1995-06-21
Granted: 1999-09-14
Abstract: A side-delivery rake includes a main frame comprising right- and left-hand frame members which diverge rearwardly and are interconnected at their forward ends by a front support assembly and are further interconnected by front, intermediate and rear braces.  The intermediate brace is constructed of a cylindrical tubular member and is bent to include opposite end sections that are respectively disposed at right angles to the right- and left-hand main frame members.  Identical bell cranks are mounted for rocking about opposite ends of the intermediate brace and include first arms respectively connected, by suspension chains, to identical upstanding brackets fixed to a rake reel support basket extending beneath the main frame, and second arms respectively connected to right- and left-hand lift cranks.
Patent CA-2152412-C (CA)
Inventor: PRUYSSERS ADRIAAN C
IPC: A61F5/02
Filed: 1995-06-22
Granted: 2007-04-24
Abstract: A polycentric hinge for orthopaedic braces includes a pair of rigid support arms having cooperating, interlocking proximal ends, a pair of pivot pins and a hinge plate. The arms are rotatably coupled at their proximal ends to the hinge plate through the pivot pins and are rotatable between an adjustable extension position and an adjustable flexion position. The hinge plate has a plurality of adjustment apertures therein adapted for selective reception of an extension limit pin and a flexion limit pin to selectively restrain rotation of the arms beyond a final extension position and a final flexion position. The pins are secured to the hinge assembly by elastomeric tethers and are positionable between the apertures to selectively adjust the range of motion of the arms. A flip-top cap covers the pins to prevent inadvertent displacement of the pins from the selected apertures.
Patent CA-2160891-C (CA)
Title: Method and installation for removing smoke from a monitored space
Inventor: SUNDHOLM GORAN
IPC: F24F7/00
Filed: 1994-05-06
Granted: 2006-10-31
Abstract: The object of the invention is to provide a new method and a new installation for fighting fire, which more effectively than earlier known methods and installations prevent fire smoke from spreading and causing damage, in particular for relatively large units, such as hotels, passenger ships and various public spaces, e.g. restaurants. The object is achieved by producing, utilizing at least one sprinkler or spray head spraying high pressure liquid in the form of small droplets, like a fog, into an out-going ventilation or air condition duct of said unit, a suction from a monitored space into said outgoing ventilation or air condition duct, in order to remove smoke gases from the monitored space.
Patent CA-2164819-C (CA)
Inventor: PEACH DAVID LESLIE LLOYD
IPC: H02M5/293
Filed: 1994-06-14
Granted: 1998-11-10
Abstract: Switching circuitry for use with an autotransfortner for the smooth transition of voltage output from a circuit of either d.c. or a.c., between a higher and a lower voltage. The circuit includes at least one, preferably two, variable resistors (13) comprising a first solid state switch (10), an inductor (11) and a resistor (12), in which the variable resistor (13) is connected to the conductance side of the switch and wherein the circuit is connected to the voltage ouput of an autotransformer. If the solid state switch used are FETs the variable resistor (13) is placed within a bridge rectifier (D2-D5). Transition time for movement of the voltage between two levels is approximately one second.
Patent CA-2173330-C (CA)
Title: Bipolar electrochemical battery of stacked wafer cells
Inventor: KLEIN MARTIN
IPC: H01M50/409
Filed: 1994-10-07
Granted: 2006-04-11
Abstract: The subject invention relates to electrode structures that are adaptable for primary and electrically rechargeable electrochemical wafer cells.  A flat wafer cell is disclosed that includes conductive, carbon-filled polymeric outer layers that serve as electrode contacts and as a means of containment of the cell.  Multi-cell, higher voltage batteries may be constructed by stacking individual cells.  Specially formulated electrodes and processing techniques that are compatible with the wafer cell construction are disclosed for a nickel-metal hydride battery system.  This invention is further directed to fabrication of electrodes from electrochemically active material prepared by coating non- to low-conductive particles of a metal hydroxide or metal oxide powder with nickel using a electroless nickel coating process.  The cell design and electrode formulations provide for individual operation of a vented or low pressure sealed cell and/or for operation of these cells in a stacked array in an outer battery housing.
Patent CA-2186119-C (CA)
Inventor: KONIJN GERRIT
IPC: B01D3/18
Filed: 1995-03-21
Granted: 2007-01-02
Abstract: Column (1) for counter-currently contacting gas and liquid having a gas inlet and a liquid outlet arranged in its lower end and a liquid inlet and a gas outlet arranged in its upper end, which column is provided with a plurality of horizontal contact trays (5, 6, 7, 8) arranged axially spaced apart in the column (1), each contact tray (5, 6, 7, 8) being provided with passages and a downcomer (10, 11, 12, 13) opening below the contact tray (5, 6, 7, 8), and with a plurality of horizontal separation trays (15, 16, 17) provided with swirl tubes (20, 21, 22) and with means (29, 30, 31) for removing liquid from the separation tray (15, 16, 17), each separation tray (15, 16, 17) being arranged above a contact tray (6 7, 8), wherein each swirl tube (20, 21, 22) is provided with an annular U-turn deflector (34, 35 36) arranged over the upper end of the swirl tube (20, 21, 22).
Patent CA-2186628-C (CA)
Title: A method and apparatus having time dependent sleep modes
Inventor: PATSIOKAS STELIOS J
IPC: H04B1/16
Filed: 1995-04-18
Granted: 2001-01-02
Abstract: A remote meter reading system (10) includes a group of meter interface units in which each meter interface unit (12) operates between periods of activity and inactivity. The meter interface unit has stored first (400) and second (500) operational schedules, and a third schedule (600) which is used to determine whether to use the first (400) or second (500) schedule. The first (400) and second (500) schedules inform controller (26) when to provide a control signal to power control circuit (27) in order to stop the flow of battery energy from battery (25) to communication unit (24), thereby conserving valuable battery energy during those periods of time when the meter interface unit (12) is not likely to be interrogated by meter reading device (15).
Patent CA-2189668-C (CA)
Inventor: SAWA YOSHITAKA
IPC: B21B27/00
Filed: 1996-03-06
Granted: 2001-01-30
Abstract: A centrifugal cast roll shell material composed of a granular MC carbide, graphite and C: 2.5 to 4.7%, Si: 0.8 to 3.2%, Mn: 0.1 to 2.0%, Cr: 0.4 to 1.9%, Mo: 0.6 to 5%, V: 3.0 to 10.0% and Nb: 0.6 to 7.0%, satisfying the following formulae (1), (2), (3) and (4): 2.0 + 0.715 V + 0.10 Nb ~ c (%) ...(i) 1.1 ~ Mo/Cr ...(2) Nb/V ~ 0.8 ...(3) 0.2 ~ Nb/V ...(4), the remainder being Fe and inevitable impurities, wherein the pouring temperature is 1,400.degree.C or higher.
Patent CA-2193748-C (CA)
Inventor: SILVERMAN DAVID PHILLIP
IPC: G06Q20/42
Filed: 1996-12-23
Granted: 2001-01-16
Abstract: A secure communication mechanism for communicating credit card or other sensitive information between a user terminal and a server which communicate over a data network (e.g., Internet). For secure or private communication of sensitive information over a data network, a telephone connection is established between the originating server to which the user is connected for access to the data network and the SP to which the sensitive information is directed. The method and system provide for a secure electronic commercial transaction between a user and a service provider which charges for information and/or services and/or goods, wherein sensitive information includes credit card information transmitted from the user to the service provider, and/or electronic information or services transmitted from the service provider to the user in exchange for payment received from the user.
Patent CA-2197748-C (CA)
Inventor: DUNSBERGEN KIRK M
IPC: D06F34/06
Filed: 1997-02-17
Granted: 2001-11-20
Abstract: A timer mechanism for an appliance such as a clothes dryer includes a pulser cam and a timer cam. The timer cam has a notch along its perimeter while the pulser cam has a step formed in its perimeter. The cams rotate in opposite directions with a cam follower biased against the cams. A clapper is connected to the cam follower and is adapted to strike a chime if the cam follower is aligned with the notch in the timer cam and the cam follower drops off the step in the pulser cam as the pulser cam rotates past the cam follower. The pulser cam is connected to the timer motor and continuously rotates at a first speed throughout a cycle while the timer cam is connected to the timer motor and the timer dial of the appliance and rotates in the opposite direction at a second slower speed.