baber/WOPTO huggingface dataset:
Patent CA-2154690-A1 (CA)
Title: Expansion joint assembly having load transfer capacity
Inventor: HU KUO-KUANG
IPC: E01C11/14
Filed: 1994-01-28
Abstract: A prefabricated roadway expansion joint/load transfer assembly (10) is provided which accommodates normal expansion and contraction between adjacent slabs (90a, 90b) while transferring vertical shear loads and minimizing stress cracking of the surrounding concrete (90). The assembly (10) includes a plurality of X-configuration bar units (12) including crossed, unconnected metallic bars (20, 22) whose ends (24, 30, 28, 26) are embedded within the adjacent slabs (90a, 90b). The bar ends (24, 30, 28, 26) are coupled within the corresponding slabs (90a, 90b) through use of respective U-shaped coupling assemblies (14) each having spaced legs (38, 40) and a bight (42), and vertical tie rods (44). The individual bar units (12) are joined by laterally extending connecting rods (56-70). A central spacer (18) is supported by the bar units (12) and supplementary spring supports (76) and extends the full width of the assembly (10). In use, the cage-like assembly (10) is placed across a prepared road bed (88), and concrete (90) is poured over the assembly (10). The spacer (18) creates the necessary joint without the need for subsequent sawing of the concrete (90).
Patent CA-2157359-A1 (CA)
Title: New o-sulfated gangliosides and lyso-ganglioside derivatives
Inventor: MANEV HARI
IPC: C07H15/10
Filed: 1994-03-04
Abstract: Derivatives of gangliosides and of N-acyl-N-lyso-gangliosides of N'-acyl-N'-lyso-gangliosides and N,N-di- or poly-acyl-NN'-di-lyso-gangliosides, in which at least one of the hydroxyl groups in the saccharide, sialic or ceramide residues is esterified with sulfuric acid, functional derivatives thereof, and their salts with either inorganic or organic bases and the acid addition salts, except persulfonated derivatives at their hydroxyl, sialic and ceramide groups of the GM1, GD1a, GD1b, and GT1b gangliosides. Such compounds have antineurotoxic and neuritogenic activity and may therefore be used in pharmaceutical preparations. Also a marked modulating effect on the expression of the CD4 molecule in immune system cells has been shown.
Patent CA-2160241-A1 (CA)
Title: Reinforcing elements for castable compositions
Inventor: SANDERS JAMES F
IPC: C04B20/00
Filed: 1994-05-03
Abstract: Methods and articles for reinforcing castable compositions through the use of reinforcing elements (22) maintained in a close-packed alignment in a dispersible containment means (24).
Patent CA-2160286-A1 (CA)
Inventor: EVANS JAMES GIFFORD
IPC: H01Q9/04
Filed: 1995-10-11
Abstract: In an antenna having a conductor of a length L and a dielectric material with a dielectric constant .epsilon.r1 contacting the conductor, a matching dielectric layer .epsilon.r2 less than .epsilon.r1 matches the dielectric constant to free space.  Preferably .epsilon.r2 =   ,  L=   .    The depth d of the second dielectric is a quarter wavelength in the matching layer.  Multiple matching layers with successively decreasing dielectric constants forms embodiments.  In one embodiment the resonant conductive arrangement is a microstrip patch antenna with the dielectric material supporting a patch and matching layer covering the dielectric material.
Patent CA-2160708-A1 (CA)
Title: Apparatus for drilling a curved bore
Inventor: ROMANO JACK W
IPC: A61B17/16
Filed: 1994-05-05
Abstract: A method and apparatus for drilling a curved bore are disclosed, wherein the apparatus includes a handle (20) and a removable cartridge (174) in which cutting bits (240) are disposed to produce the bore.  The handle includes a trigger (66, 66', 66") which the user squeezes toward a grip (24) of the handle to both energize a pneumatic motor (42) and to advance the opposed cutting bits in curved arcs at different rates. As the trigger is squeezed, a curved guide arm (234) conveying one of the cutting bits (240) is advanced more rapidly than the other curved guide arm (234), passing a median point is the bore and then being withdrawn as the other curved guide arm and cutting bit are advanced past the median point. Thus interference between the two cutting bits is avoided and a clean bore hole is produced. In addition, the removable cartridge (174) minimizes breakage of a flexible drive cable (238).
Patent CA-2161963-A1 (CA)
Inventor: LACCHIA ADRIEN
IPC: B05B7/14
Filed: 1994-05-19
Abstract: Dans une installation de revêtement, le dispositif d~alimentation en produit pulvérulent est refroidi en permanence pour éviter la détérioration de la poudre qui pourrait être causée par une température trop élevée. L'air de fluidisation de la poudre contenue dans le réservoir (1) est un air froid et sec. Un échangeur de chaleur (30) alimente un circuit en boucle fermée comprenant une chambre annulaire de refroidissement (32) et un serpentin (33) placé sur le trajet de la poudre. L'axe de la vis sans fin peut aussi être refroidi.
Patent CA-2163802-A1 (CA)
Inventor: NORTIER RICHARD A
IPC: F16K31/02
Filed: 1995-11-27
Abstract: A splashproof enclosure for use in mounting the electrical control circuits for connecting electric power to a sensor operated electric actuator for a toilet room plumbing device such as an electronic faucet includes a base and a cover mounted on the base.  The base is formed and adapted to mount on a toilet room wall and has a power cord opening so that a power cord may enter said enclosure from the rear.  There are spacing channels on the side of the base facing the toilet room wall to space the base from the wall to allow fluid to flow behind the enclosure.  There is a dam positioned on the upper side of the power cord opening and extending toward the toilet room wall to divert fluid around the power cord opening.  The cover is attached to the base and there are seal elements between the cover and base preventing the entry of fluid into the interior of the enclosure.  There are cable entrance ports in the cover and the base providing a plurality of openings for cables for the sensor and electric actuators.  Each of the cable entrance ports include ribs for securing the cables to the enclosure.
Patent CA-2164438-A1 (CA)
Title: Gas detection, identification and elemental and quantitative analysis system
Inventor: FURUE HIROSHI
IPC: G01N27/407
Filed: 1994-06-06
Abstract: A system, an apparatus and a method are provided for measuring the concentration of a sample gas in an oxygen-containing carrier gas, and for analyzing the chemical constitution of an oxygen-containing gas. The system includes two gas detectors, and a flame ionization detector. Each gas detector includes a central, solid electrolyte inner detector tube, the central, solid electrolyte inner detector tube comprising an oxide of a tetravalent metal which has been doped with an oxide of an element having a valence less than four. A first inlet tube into, and a first outlet tube from, the central, solid, electrolyte inner detector tube permits the oxygen-containing gas to flow through the detector tube while substantially eliminating back-diffusion of air into the detector tube. An internal electrode is in contact with the interior of the detector tube, and has a first, electrically-conductive output lead. An external electrode is in contact with the exterior of the detector tube, and has a second, electrically-conductive output lead. First and second interfaces between the electrode and the detector tube are maintained at a predetermined temperature. Means provide the first interface with continuously-flowing, oxygen-containing carrier gas which also contains the sample gas whose concentration is to be measured. An outer, concentric non-porous tube is spaced apart from the central, solid electrolyte inner detector tube, to provide an annulus therebetween. A second inlet tube into the annulus and a second outlet tube from the annulus allow the reference gas to flow through the annulus while substantially eliminating back-diffusion of air into the annulus. A second external solid electrolyte is maintained at the predetermined temperature as first interface. Means bathe the second interface with the reference gas. Means seal the various tubes to provide a sealed unit. Means are for measuring an electrical signal between said electrodes, the electrical signal being directly proportional to the concentration of said sample gas to be determined, thereby to determine the concentration of the sample gas directly as a linear correlation of said electrical signal. These means provide a direct measurement of the amount of CO2, H2O and C, and the measurements are converted to equations which are solved electrically to give the carbon, hydrogen and oxygen contents of the gas.
Patent CA-2165103-A1 (CA)
Title: Method for preventing monitoring of data remotely sent from a metering accounting vault to digital printer
Inventor: NACLERIO EDWARD J
IPC: H04L9/10
Filed: 1995-12-13
Abstract: The method for preventing monitoring of postage indicia data which is sent from a postage metering vault to a remotely located digital printer over a communication link between the meter vault and the digital printer. The meter is provided with an encryption engine for encrypting postage indicia data utilizing a encryption key. The digital printer includes a decryption engine for decrypting postage data received from said meter utilizing the same encryption key and then prints a postage indicia pursuant to the decrypted postage indicia data. The postage meter also includes a key manager for generating a new encryption key pursuant to a token which is either randomly generated or generated pursuant to an algorithm by a similar encryption key manager located in the digital printer which token is also used to generate the decryption key for the decryption engine. As a result the encryption keys are the same.
Patent CA-2165705-A1 (CA)
Title: An interactive system for communications between a cordless telephone and a remotely operated device
Inventor: AUGUST KATHERINE GRACE
IPC: H04M1/72502
Filed: 1995-12-20
Abstract: An interactive communication system includes a portable unit of a cordless telephone for providing wireless telephone communications and integrating telephone functions and control of remotely operated devices, such as television sets, video cassette recorders and cable converters. The portable unit advantageously provides controlling information to a remotely operated device in response to voice and data communications occurring over the telephone network.
Patent CA-2165882-A1 (CA)
Title: Photochromic particles, process for production thereof, and optical member containing the same
Inventor: NAKAMURA TORU
IPC: C09K9/00
Filed: 1995-12-21
Abstract: A photochromic particulate material comprises microcrystalline silver halide having an average particle diameter ranging from about 50 to about 300 .ANG., an inorganic oxide layer coating the microcrystalline silver halide, and an organic substance layer coating at least a part of the inorganic oxide layer.
Patent CA-2167083-A1 (CA)
Title: A method and apparatus for testing the thermal stability of an (aviation) fuel
Inventor: CLARK RICHARD HUGH
IPC: G01N25/02
Filed: 1994-07-13
Abstract: A method and apparatus for testing the thermal stability of an (aviation) fuel. Under pressure a fuel sample to be tested is supplied to a small-bore capillary tube (2) of a test section and the fuel in the test section is allowed to be heat stressed. The fuel sample in the test section is under turbulent flow regime. The thermal degradation of the test fuel within the section is monitored by measuring by means of contactless thermometry the outer wall temperatures along the test section and subsequent increases in these temperatures, promoted by the insulation effect of fuel degradation products. From the temperature data, thus obtained, information on the thermal stability of the fuel is derived.
Patent CA-2167913-A1 (CA)
Title: Process for recovering organic acids
Inventor: LEHNHARDT WILLIAM F
IPC: C07B63/00
Filed: 1994-07-25
Abstract: An organic acid can be recovered from a fermentation broth by clarifying the broth to remove at least a substantial portion of the impurities therein, producing a clarified feed; acidulating the clarified feed by adding a quantity of a mineral acid effective to lower the pH of the feed to between about 1.0 and about 4.5, producing an acidulated feed which is substantially saturated with respect to at least one electrolyte selected from the group consisting of MHSO4, M2SO4, M3PO4, M2HPO4, MH2PO4, and MNO3, where M is selected from the group consisting of Na, NH4, and K; extracting the acidulated feed with an extraction mixture which includes (a) water, (b) a mineral acid, in a quantity effective to maintain the pH of the feed between about 1.0 and about 4.5, and (c) an oxygenated solvent which has limited miscibility with water and the acidulated feed, the oxygenated solvent having from 4 to 12 carbon atoms and having at least one functional group selected from the group consisting of hydroxyl, ester, keto, ether, carbonyl, and amido, with the extraction producing a solvent extract and a first raffinate; and back extracting the solvent extract with an aqueous liquid, thereby producing an organic acid-rich aqueous extract and an organic acid-depleted solvent raffinate.
Patent CA-2168371-A1 (CA)
Inventor: SPANDAU KAI HENNING
IPC: A61F5/01
Filed: 1994-08-01
Abstract: L'objet de l'invention est de créer une articulation à blocage automatique, notamment une articulation d'orthèse, qui puisse être débloquée avec peu d'effort, de sorte que même des patients invalides puissent débloquer l'articulation. A cet effet les raccords (1, 2) ont des profils courbes (5, 6) qui se coupent selon un angle si large que lorsqu'un des raccords (1, 2) est mis en rotation à l'encontre de l'autre raccord, un corps de roulement (7), guidé dans les deux profils courbes (5, 6) et dont l'axe se situe au point d'intersection des lignes médianes (10, 11) des profils courbes (5, 6), se déplace sans contrainte le long des lignes médianes (10, 11) des profils courbes (5, 6). L'articulation est bloquée par blocage automatique lorsque l'angle  alpha  entre les tangentes imaginaires des lignes médianes (10, 11) qui passent par leur intersection s'approche de zéro et que la ligne qui relie les centres des cercles de courbure des deux profils courbes (5, 6) ne passe pas par l'axe de rotation (4) de l'articulation au point de croisement ou de contact en position bloquée.
Patent CA-2168666-A1 (CA)
Inventor: JOFFE ALEXANDER
IPC: H04L12/56
Filed: 1994-08-17
Abstract: A multi-port shared memory system is provided which includes multiple ports for transferring data; a plurality of memory access buffers; and an interconnection matrix circuit for distributing subsets of data between the ports and the buffers.
Patent CA-2169832-A1 (CA)
Title: Entropy based signal transmission, reception and signal analysis method and apparatus
Inventor: HUGHES MICHAEL S
IPC: G01S7/40
Filed: 1994-08-17
Abstract: An entropy based signal transmission (50), reception (58) and analysis method and apparatus in which the entropy of time dependent signals is determined by utilizing a selected Green's function relationship. Information with respect to a medium with which the signals have interacted is derived by comparison of the entropies of the signals. In a preferred embodiments, the density distribution functions of selected digitized time segments (58, 62) of the signals to be analyzed (68) are determined by using the selected Green's function relationship and the entropies of the signals are then determined from the density distribution functions and compared with each other (70) to derive the desired information.
Patent CA-2170420-A1 (CA)
Inventor: KYLE NORMAN A
IPC: G10D9/02
Filed: 1996-05-03
Abstract: A drone reed includes a tubular polymer plastic body having a first end and a second end.  The first end has an exterior surface with threads, whereby the body is screwed into a bagpipe drone.  This drone reed is not effected by moisture. It can be securely screwed into the drone reed seat of the drone.   It is preferred that the a bullet shaped plug be positioned in second end of the tubular body in order to reduce the possibility of double toning.
Patent CA-2172369-A1 (CA)
Title: Anterior cervical plate holder/drill guide and method of use
Inventor: COATES BRADLEY J
IPC: A61B17/70
Filed: 1994-10-26
Abstract: This invention is a holder drill guide apparatus (150) for holding a spinal plate (20) and for drilling and tapping the bone. The holder drill guide comprises two arms (151, 152) which pivot with respect to each other, and a foot (157) attached at the end of each arm (151, 152). Each foot (157) has a hook (161) which is adapted to securely grasp a spinal plate (20), and each foot (157) has a pair of thru-holes (158). Each thru-hole (158) is aligned with a screw bore (27) in the spinal plate (20) when the holder drill guide (150) is engaged to the plate (20). The system further includes a number of double headed fixation pins (170), which hold the plate (20) in position against the cervical spine during drilling and tapping. In another embodiment a drill and tap guide system (100) can be mounted on a bone plate (20) to provide a firm foundation for accurately drilling and tapping screw holes into vertebra to be instrumented. The drill and tap guide system (100) includes an assembly support (101) which is engaged to the plate (20) by way of positioning screw (105) to the guide body (110). A tap sleeve (102) and drill guide (103) can then be supported by the assembly support (101), which both thereby provide accurate positioning for a drill (104).
Patent CA-2175799-A1 (CA)
Title: Improved Multifunctional Viscosity Index Improver-Dispersant Antioxidant
Inventor: PATIL ABHIMANYU ONKAR
IPC: C08F8/46
Filed: 1994-12-21
Abstract: Oleaginous compositions, particularly lubricating oil compositions, exhibiting improved antioxidant properties containing a viscosity index improving amount of a viscosity index improver-dispersant comprised of the reaction products of: (a) an oil soluble ethylene copolymer comprising from about 15 to 90 wt. %  ethylene and from about 10 to 85 wt. % of at least one C3 to C28 alpha-olefin, having a number average molecular weight of from about 20,000 to 500,000, grafted with an ethylenically unsaturated carboxylic acid material having 1 or 2 acid or anhydride moieties; (b) an organic polyamine having at least two primary amino groups; (c) an aldehyde; (d) a hydroxy aromatic reactant having at least one -OH- group attached to the aromatic ring; and, optionally, (e) an amount effective to provide a V.I. improver-dispersant exhibiting improved low temperature viscometric properties of high functionality long chain hydrocarbyl substituted dicarboxylic acid material having a functionality of at least 1.3.
Patent CA-2177117-A1 (CA)
Inventor: LAROSE JEFFREY A
IPC: F23D1/00
Filed: 1996-05-22
Abstract: A diffuser for a coal burner has a coal nozzle with an axis  and  an  inner  surface.  The  diffuser  comprises  a reducing  area  cone  which has  tapering  upstream  and downstream ends, for positioning in a coal nozzle at the coal nozzle axis.  A frusto-conical shroud has a small diameter upstream end and a large diameter downstream end, positioned around the reducing area cone. A plurality of support legs is connected to the reducing area cone and extends radially outwardly through the shroud for connecting to the coal nozzle. Each of the support legs is inclined at an acute angle to the axis of the coal nozzle for evenly spreading pulverized coal supplied through the coal nozzle and past the diffuser.
Patent CA-2179361-A1 (CA)
Inventor: PEDERSEN J RGEN WERNGREEN
IPC: G02B6/126
Filed: 1996-06-18
Abstract: Integrated optical mode converter provided with a channel-shaped waveguide comprising a periodic concatenation of two wave-guiding subsections (P) and (Q) defined by a strip-shaped structure supported by a substrate. The waveguide profiles of the subsections (P) and (Q) are defined by two different partial strips, of which at least one is, but preferably both are, provided with a slot (SP, SQ) running in a longitudinal direction of the partial strip in question. The slots have been applied in such a manner that only the field distribution of one of the two guided modes involved in the mode conversion is affected. Purpose: increased conversion per interface; and lower attenuation in specific embodiments.
Patent CA-2180892-A1 (CA)
Title: Styrenic polymer composition
Inventor: HAVRILIAK STEPHEN JR
IPC: C08L25/06
Filed: 1996-07-10
Abstract: Syndiotactic polystyrene can be impact-modified by a blend of (a) polystyrene- hydrogenated polybutadiene block copolymers and (b) one or more core/shell modifiers based on a lightly or non-crosslinked rubber core, and with at least one shell or intermediate shell stage which is predominantly polystyrene, to produce a material of higher impact strength than the better value of either additive singly at the same total impact modifier level.
Patent CA-2187348-A1 (CA)
Inventor: SAITO SHIGERU
IPC: G01N33/68
Filed: 1995-04-07
Abstract: Un procédé de diagnostic de risque d'accouchement prématuré par les sécrétions vaginales ou le mucus cervical d'une femme enceinte consiste à déterminer la teneur en interleukine-8 du fluide concerné. Ce procédé permet un diagnostic très précis, et présente un intérêt pour la détection et le traitement des cas d'accouchement prématuré.
Patent CA-2188219-A1 (CA)
Title: Rotating Slide-N-Snap
Inventor: RUTKOWSKI GREGORY M
IPC: F16C1/10
Filed: 1996-10-18
Abstract: A fitting (26) for rotatably supporting a conduit (22) in a bulb-shaped slot in a wall (20). The fitting (26) has a pair of spaced parallel flats (38, 40) defining a minor dimension for sliding into the narrow entrance (14) to the circular seat (16) of the slot and a larger circular major dimension (36) for rotating into a locked position crossways the entrance (14) to prevent removal of the fitting (26) from the slot.  A radial web acts as a stop (50) to prevent backward insertion of the fitting into the slot and for engaging the edge of the entrance (14) in the locked position to prevent the retention arm (46) from overriding the retainer recess (18).
Patent CA-2188692-A1 (CA)
Title: Device to regulate the flow of atm cells within an atm packet switch
Inventor: GRENOT THIERRY
IPC: H04L12/56
Filed: 1996-10-23
Abstract: The disclosed device, placed within an ATM packet switch, is of the type comprising a multiplexer associated with a specified number of input and output buffers and a device to control the internal flows of ATM cells informing the input buffers of the state of congestion of the output buffers.  This device further comprises means to convert the flow of sporadic point-to-multipoint cells, arriving at the input of the input buffers, into a regular flow of point-to-multipoint cells towards the multiplexer irrespective of the outgoing direction taken by the cells and independently for each input.
Patent CA-2189531-A1 (CA)
Title: Methods and Compositions for Preparing Rigid Foams with Non-Chlorofluorocarbon Blowing Agents
Inventor: WILLIAMS STEVE
IPC: C08G18/16
Filed: 1995-05-04
Abstract: Disclosed are methods and compositions for preparing rigid foams by contacting a polyisocyanate with a polyol mixture comprising (a) from about 40-95% by weight of a polyester or polyether polyol; (b) a catalytic amount of a catalyst system comprising a primary catalyst and an amino acid salt catalyst derived from sarcosine; and (c) a non-chlorofluorocarbon blowing agent.