baber/WOPTO huggingface dataset:
Patent CA-2068466-C (CA)
Title: A method of calibrating a step motor
Inventor: KARPOL AVNER
IPC: H02P8/00
Filed: 1992-05-12
Granted: 2000-07-11
Abstract: A method for calibrating a microstep motor comprising a step motor having a plurality of stator coils, a pair of drivers for applying respective driving voltages to the stator coils. Amplitude adjustment means are coupled to each of the drivers for adjusting the amplitudes of the respective driving voltages and offset adjustment means are coupled to each of the drivers for adjusting the d.c. offsets of the respective driving voltages. The method permits compensation for non-linearities associated with the stator coils, and comprises the steps of adjusting at least one of the amplitude adjustment means a predetermined amount, so as to produce a signal having a specified amplitude, measuring an imbalance of the motor, adjusting the offset and amplitude adjustment means as required in order to reduce the measured imbalance, and iteratively repeating the offset and amplitude adjustments as required until no further reduction in the measured imbalance is possible.
Patent CA-2072336-C (CA)
Inventor: GLASTRA HENDRIK
IPC: A61F2/945
Filed: 1992-06-25
Granted: 1996-08-13
Abstract: Expandable ring or cylinder (so-called "stent") for locally supporting or strengthtening a body vessel, particularly a blood vessel, and which is filled with curable material which cures when the stent is brought at the desired position in the vessel by means of a catheter or dotter - like device.
Patent CA-2073769-C (CA)
Inventor: RIPPINGALE JOHN B
IPC: B29C48/09
Filed: 1991-01-30
Granted: 1994-11-15
Abstract: A magnetic marker serving to locate, trace, and identify an elongated hidden object, such as a buried utility pipe, duct, con-duit, or fiber optic cable, is manufactured by applying magnetic material to a substrate (26) that is elongated and by forming from the material a helical or twisted permanent  magnet pattern extending along the length of the substrate. The magnetic material, which may be coextensive with the substrate (26) or applied to a portion only of the substrate, may be formed as a strip (46) coex-truded with the substrate (26) and magnetized in the direction of the width of the strip (46). Alternatively, magnetic material may be mixed with the material from which the substrate (26) is extruded or may be coated on the substrate (26). A strip (104) may also be preformed and applied to an elongated object (100) as the object (100) is buried, or the strip (130) may form a separate warning tape that is buried with the object and that is provided with a desired magnetic signature by twisting the strip (130) lengthwise as it is advanced for burial.
Patent CA-2074674-C (CA)
Title: Process for preparing (2s, 3r)- or (2r, 3s)-3- (alkylphenyl) glycidic acid esters using hydrolase
Inventor: SHIBATANI TAKEJI
IPC: C12R1/785
Filed: 1992-07-27
Granted: 1998-12-08
Abstract: The present invention is directed to a process for preparing optically active 3-phenylglycidic acid esters comprising reacting a racemic trans-3-phenyl-glycidic acid with an alkanol in the presence of a hydrolase to esterify preferentially either (2S, 3R) isomer or (2R, 3S) isomer of said racemic compound and isolating and collecting the resulting optically active 3-phenylglycidic acid ester from the reaction mixture, whereby the optically active ester can be produced in a single step and in a highly pure form.  The optically active 3-phenylglycidic acid esters are useful for the preparation of 1,5-benzothiazepine derivatives having pharmacological activities such as platelet aggregation inhibitory activity.
Patent CA-2076221-C (CA)
Title: Cast formed bi-metallic worm assembly & method
Inventor: DUPPS FRANK N
IPC: B22D19/16
Filed: 1992-08-14
Granted: 1998-05-26
Abstract: A cast-formed bi-metallic worm assembly of a mechanical screw press for expressing liquids from fibrous materials and a method of manufacture therefor and the product produced by the method. The worm assembly is rotatably driven by the press drive shaft and includes an outer flight body having an integral outwardly extending helical flight formed of a relatively brittle, wear-resistant homogeneous cast material and an inner hub tightly fitted and substantially fully mated within, and coextensive with, the outer flight body. The inner hub, cast formed of a more ductile, tougher homogeneous material, includes a hollow cylindrical interior surface structured for slidable engagement around and in driving connection with the drive shaft. The inner hub and outer flight body are securely engaged one to another by cast forming the outer flight body around the precast inner hub. Longitudinal lobes in a smooth undulating in and out clover leaf cross sectional pattern further increase rotational or torsionalstrength of the worm assembly without appreciably increasing internal operating stress between inner hub and outer flight body.
Patent CA-2077218-C (CA)
Title: Process and apparatus for reclaiming waste gas treating chemicals
Inventor: BEASLEY TODD
IPC: B01D53/14
Filed: 1992-08-31
Granted: 1998-04-28
Abstract: Process and apparatus for reclaiming or concentrating waste aqueous solutions of gas treating chemicals, such as alkanolamines, used for removing acid components or water vapor from natural gas.  The process involves heating the waste solution under a high vacuum to form a vapor and a liquid residue.  The temperature and vacuum can be varied to form a vapor consisting mainly of water vapor or a vapor containing both water vapor and vaporized gas treating chemical.  The vapor is subsequently condensed or passed through a wash column to produce a concentrated solution. The liquid residue is heated by passing it through a single-pass, generally co-current heater at a rate which avoids localized overheating of a liquid to a temperature above the decomposition temperature of the gas treating chemical. The heated liquid residue is then used to heat the feed waste solution by being thoroughly mixed with it, thus avoiding overheating of the feed solution.  The production of corrosive elements and the use of prolonged residence times is avoided so that the apparatus may be made of carbon steel rather than more expensive stainless steel.
Patent CA-2079108-C (CA)
Title: Canalicular implant having collapsible section and method
Inventor: HERRICK ROBERT S
IPC: A61F9/007
Filed: 1991-03-29
Granted: 2003-05-27
Abstract: A canalicular implant (20) and method for treating eye condition with the implant by transporting it into the punctum of the eye into the horizontal portion of the canaliculus to occlude the same is shown. The implant comprises an elongated member having a medial end (26), an opposed lateral end (34) and a central member (22) extending therebetween. The medial end (26) has a tapered section which decreases in cross-section towards the medial end. The lateral end (34) has a collapsible flared section (36) which increases in cross-section towards the lateral end (34) and terminates in an edge (40) having a greater dimension than the cross-section of the central member (22). The flared section (36) has a fully extended position and a collapsed position which it changes to with application of a radial force. The collapsible flared section dimension is approximately equal to the dimension of the horizontal section of a canaliculus of an eye adapted to receive the same.
Patent CA-2087011-C (CA)
Title: Supporting wheel
Inventor: HANSSON HANS-ERIK
IPC: B60B21/02
Filed: 1991-06-25
Granted: 1999-11-09
Abstract: A non-pneumatic supporting wheel includes a central part (10) and a wheel-rim (14-16) which is supported by the central part. The wheel-rim has an outer wheel-rim part (14; 15) which is intended to roll against an underlying surface, and an inner wheel-rim part (16) which is located radially inwards of the outer wheel-rim part. At least the inner of the two wheel-rim parts is constructed from a plurality of curved, elongated elements (16) which consist of a resilient material and which are spaced in the circumferential direction of the wheel. When seen in a section taken diametrically through the wheel; each of these elements presents parts (17, 18) which are curved in opposite directions. For the purpose of taking-up forces which act substantially radially between the wheel centre (11) and the region (15) of the wheel in contact with the underlying surface when the wheel is subjected to load, the elements (16) are elastically yielding in the radial direction of the wheel during increased bending of the elements. The circumferentially spaced and bendable elements (16) are constructed so that both the sum of the bending of each small longitudinal section (.DELTA.1k, .DELTA.1m, .DELTA.1j, .DELTA.1n) of the elements when the elements are subject to load in the radial direction of the wheel and the sum of the product of the bending (V j, V n) of each such small section (.DELTA.1j, .DELTA.1n) and the distance of this section (h j, h n) from the underlying surface when the wheel is subjected to normal load is at least essential zero.
Patent CA-2089017-C (CA)
Inventor: YAMANAKA YASUROU
IPC: G05B19/418
Filed: 1993-02-08
Granted: 1999-01-19
Abstract: An image of a wheel hub to which a wheel is mounted is taken by a first camera provided on one side of a vehicle conveyed along an assembly line.  Approximate coordinates of the center of the wheel hub are determined based on the image taken by the first camera.  Second cameras mounted on a wheel-mounting robot are located in front of the wheel and symmetrically with respect to the center of the wheel hub, according to the approximate coordinates of the center of the wheel hub.  Then, revised coordinates of the center of the wheel hub and a rotational displacement of the wheel hub from a standard rotational position thereof, and a turning angle of the wheel hub toward the right or left of the vehicle's progressive direction are determined based on the images obtained by the second cameras.  The wheel is automatically mounted to the wheel hub by the wheel-mounting robot according to these results.
Patent CA-2095759-C (CA)
Title: Offset forming of structural components
Inventor: MENCHETTI ROBERT J
IPC: E04B2/30
Filed: 1993-05-07
Granted: 2001-11-20
Abstract: A laterally stiffened, elongate, roll-formed metal stud, or equivalent structural member having a central web with alternating deformed and undeformed portions.
Patent CA-2096665-C (CA)
Inventor: TALONEN TIMO
IPC: C22B17/02
Filed: 1993-05-20
Granted: 1998-12-15
Abstract: The invention relates to a method for recovering zinc, cadmium, lead and other volatile metals from sulfidic raw materials in a pyrometallurgical process.  In the method, zinc sulfide raw material is fed into molten copper in a reduction furnace under atmospheric conditions and at a temperature in the range of 1,450 to 1,800°C, so that the zinc, lead and cadmium are volatilized while the iron, copper and precious metals remain in the molten metal or in a metal sulfide matte created in the furnace.
Patent CA-2099685-C (CA)
Inventor: NAKAMURA TAKAO
IPC: H01J37/147
Filed: 1993-06-29
Granted: 1998-08-04
Abstract: A focused ion beam implantation apparatus comprises a vacuum chamber, an ion source generating an ion beam, a means for accelerating the ion beam, a means for eliminating unwanted ion species in the ion beam, and a means for focusing the ion beam on a target. The apparatus further includes a means for scanning the ion beam relative to the target and means for inclining the ion beam relative to the target.
Patent CA-2099779-C (CA)
Title: Mixed specificity fusion proteins
Inventor: ARUFFO ALEJANDRO A
IPC: C07K19/00
Filed: 1992-01-24
Granted: 2002-03-19
Abstract: Mixed specificity fusion proteins capable of binding to cellular adhesion molecules have been produced. The fusion pro-teins contain a polypeptide region, such as an IgG constant region, operatively attached to at least two binding regions each of which corresponds to either an extracellular domain of a cell surface receptor for cellular adhesion molecules, or a variable re-gion of an antibody directed to a cellular adhesion molecule. A method of inhibiting inflammation in a patient is disclosed in which the present fusion proteins are administered to a patient to inhibit the attachment of inflammatory cells to vascular endo-thelium. A method of inhibiting metastasis is disclosed in which the present fusion proteins are administered to a patient to inhi-bit the metastasis of responsive tumor cells.
Patent CA-2100225-C (CA)
Title: Spectrum sharing communications system and system for monitoring available spectrum
Inventor: LEMSON PAUL H
IPC: H04B7/08
Filed: 1993-07-09
Granted: 2003-06-17
Abstract: A mobile radio communications network is provided with a system for allocating one or more ranges of transmission frequency to the communications network, in order to prevent the network from interfering with received signals of an incumbent radio system. The allocating system may be provided with a device for receiving and monitoring information indicative of the presence and location of incumbent radio stations. A signal level monitoring system monitors signals transmitted from incumbent radio stations to determine the frequency and degree of RF isolation, with respect to a monitoring antenna of the monitoring system, of the stations.      The monitoring system includes monitoring antennas, a spectrum analyzer, a device for controlling the spectrum analyzer, and a device for processing and correcting the data produced by the spectrum analyzer.
Patent CA-2103065-C (CA)
Inventor: BOYER STANLEY JOHN
IPC: A61B5/022
Filed: 1992-02-19
Granted: 2001-08-28
Abstract: A wrist mount apparatus (30) for placing a tissue stress sen-sor (48) in engagement with the tissue overlaying an artery for use in a system for noninvasively determining the infra-arterial blood pressure of a patient comprises a base portion (32) and a transdu-cer platform (34) which is pivotally and slidingly engaged there-with the apparatus to be used on either wrist of the wearer. A for-ce overload system (66, 74) is provided to protect the wearer from excessive forces applied to the wrist tissue by the apparatus. A quick~disconnect feature (134, 136) allows the tissue stress sensor (48) to be readily removed from the wrist mount apparatus (30). A disposable, anticontamination film (144) is used with each appli-cation of the wrist mount apparatus (30) to minimize transferring contaminants from one wearer to another and preventing a build up of materials on the sensor's face.
Patent CA-2104705-C (CA)
Title: Drilling device for a rock drill
Inventor: MUNDJAR MARJAN
IPC: B28D1/14
Filed: 1993-08-24
Granted: 2003-08-05
Abstract: The invention concerns a rock drill (2) for activating a rotatable and reciprocable drill steel assembly (Fig. 1). A reversible motor (50) is coupled to a striking bar (3) for rotating the drill steel. The striking bar is struck by a percussion piston (10). A rotary fluid valve (15) is operat-ing the piston. A disconnectable coupling (37,38,43) in nor-mal operation couples both the valve (15) and the striking bar (3) with the motor (50). In special modes the motor operates only the percussion piston, e.g. for retracting a drill rod, or only rotates the striking bar (3), e.g. for connecting and disconnecting drill rods.
Patent CA-2105015-C (CA)
Title: Catalyst compositions and process for preparing polyolefins
Inventor: CHABRAND CHRISTINE JACQUELINE
IPC: C08F4/44
Filed: 1993-08-27
Granted: 2007-04-03
Abstract: Catalyst compositions comprising metallocene complexes having polymerisable groups may be used for the preparation of polyolefins.      The catalyst compositions may be in the form of polymers comprising the metallocene complex and may be suitably supported on inorganic supports. Polymers having a broad range of density and melt indices as well as low hexane extractables and excellent powder morphology and flowability may be obtained by use of the catalyst compositions. Preferred metallocene complexes are zirconium complexes in which the polymerisable group is vinyl.
Patent CA-2108160-C (CA)
Title: Chiral tridentate bis(phospholane) ligands
Inventor: BURK MARK JOSEPH
IPC: C07F15/00
Filed: 1992-04-20
Granted: 2002-10-08
Abstract: Chiral tridentate bis(phospholanes) which coordinate as ligands in a meridinal fashion on an octahedral metal or which coordinate in square-planar environments are provided with a method for their preparation. They are represented by formula (I), wherein: R is a radical comprising alkyl, fluoroalkyl or perfluoroalkyl, each containing up to about 8 carbon atoms; aryl; substi-tuted aryl; aralkyl; ring-substituted aralkyl; or CR'2(CR'2)q X(CR'2)p R' wherein q and p are each integers, the same or differ-ent, ranging from 1 to about 8; X is as defined below; and R' is H; F; aryl;  or alkyl,- fluoroalkyl or perfluoroalkyl, each con-taining up to about 8 carbon atoms; n and m are each integers, the same or different, ranging from 1 to about 8; and X comprises O, S, NR", PR", AsR", SbR", divalent aryl, divalent fused aryl, divalent 6-membered ring heterocyclic group, divalent 5-membered ring heterocyclic group, or divalent fused heterocyclic group, wherein R" is hydrogen; alkyl, fluoroal-kyl, or perfluoroalkyl, each containing up to about 8 carbon atoms; aryl;  substituted aryl; aralkyl; ring-substituted aralkyl; or CR'2(CR'2)q Z(CR'2)p R' wherein Z is O, S, NR', PR', AsR' or SbR', and R', p, and q are as defined above.
Patent CA-2108533-C (CA)
Inventor: PULIDO-CEJUDO GABRIEL
IPC: C12N5/18
Filed: 1993-10-15
Granted: 2002-10-08
Abstract: A monoclonal antibody against cytosolic nucleoside diphosphate kinase (NDP-kinase: EC 2.7.4.6) from HL60 cells has been produced. The monoclonal antibody solely recognizes the active oligomeric form of NDP-kinase and does not inhibit NDP-kinase activity. Reduction and alkylation of NDP-kinase oligomer performed under denaturing conditions fully destroyed the antigenic site recognized by the monoclonal antibody.      Western blot analysis after non-denaturing polyacrylamide gel electrophoresis (PAGE) revealed that a single protein oligomer is recognized by the MAb. The protein band showed the same electrophoretic mobility of pure cytosolic NDP-kinase detected by a specific NDP-kinase enzymic staining assay performed after nondenaturing PAGE. Collectively, the results suggest that the MAb recognizes the native form of NDP-kinase.      Searching for the reactivity of the MAb against membrane-bound NDP-kinase it was found that the MAb selectively reacts with a cell-membrane component of monocytes (93%), granulocytes (97%) and 14% of lymphocytes. Two color immunofluorescence showed that the MAb reacted only with CD19+ B cells (93% of CD19+ B cells), which suggest that NDP-kinase may play an important role in normal B lymphocyte function.
Patent CA-2109575-C (CA)
Title: Using allosteric hemoglobin modifiers to decrease oxygen affinity in blood
Inventor: ABRAHAM DONALD J
IPC: A61K31/192
Filed: 1992-05-19
Granted: 2000-02-01
Abstract: A family of compounds has been found to be useful for right-shifting hemoglobin towards a low oxygen affinity state. The compounds are capable of acting on hemoglobin in whole blood. In addition, the compounds can maintain the oxygen-affinity in blood during storage end can restore the oxygen affinity of outdated blood.
Patent CA-2110428-C (CA)
Title: Electronic circuit pack and mounting frame combination
Inventor: DITTBURNER ROBERT C
IPC: H05K7/14
Filed: 1993-12-01
Granted: 2000-02-15
Abstract: Electronic circuit pack and mounting frame combination in which a mating connector joined to conductors coming in for connection to the circuit pack, is held within a connector holder for protection and connection purposes. Straight line action of the connector holder is ensured to ensure proper alignment of the mating connector with the circuit pack connector. It is preferable for the connector holder to be permanently attached to the frame to support the weight of the holder and minimize strain upon the incoming conductors.
Patent CA-2111697-C (CA)
Inventor: HALSKOV SOREN
IPC: A61K47/34
Filed: 1992-06-16
Granted: 2002-08-20
Abstract: Suppositories which may have a considerably higher content of an active drug than ordinary suppositories, are produced by compressing a suppository mass, which contains a considerable amount of a polyethylene glycol having a molecular weight of at least 4000, preferably 6000. The polyethylene glycol constitutes 20-50 % by weight of the suppository mass, which moreover contains microcrystalline cellulose and/or other additives common in the production of drugs. The obtained suppositories are more convenient to store and use, easier to produce and considerably more concentrated with respect to active substance (up to 75 % by weight) than traditional melt-moulded suppositories.
Patent CA-2113549-C (CA)
Title: Intravenous device for the partial or total flattening of a vein
Inventor: VAN CLEEF JEAN-FRANCOIS
IPC: A61B17/12
Filed: 1992-07-16
Granted: 2004-04-20
Abstract: The intravenous device of the invention enables a vein to be partially or totally flattened. The device comprises at least two presser rods which are interconnected by means of at least one spreader element having a spring effect, and each of said rods being suitable for bearing against a respective one of two opposite borders of a vein. Said device is substantially plane when in position in a vein.
Patent CA-2114414-C (CA)
Title: Process and device for recombining and/or igniting hydrogen contained in an h2-air-steam mixture, preferably for nuclear power stations
Inventor: HILL AXEL
IPC: G21C9/00
Filed: 1992-07-28
Granted: 2002-11-12
Abstract: A first partial flow (f11) of the H2-air-steam mixture (f1) is passed through a first channel (R) and recombined by contact with a first channel wall (r1) having a catalytic coating. In addition to the first partial flow (f11), a second partial flow (f12) of the said mixture is passed through a second channel (Z) having a second channel wall (r2) and, in that case, is ignited by being fed past, preferably metallic, ignition elements (z, z1, z2, z3) heated to the H2 ignition tem-perature on reaching or exceeding the ignition limit.      Under these circumstances, the heat liberated during the catalytic reaction in the first channel (R) is, at least partially, transmitted to the second channel (Z) for the purpose of preheating it. The novel process functions both at the lower and at the upper ignition limit and recombines even at unignitable H2 concentrations. - A device with which the process can be carried out is also described.
Patent CA-2115695-C (CA)
Inventor: SPERBER GERHARD
IPC: A42C2/00
Filed: 1994-02-15
Granted: 1998-09-15
Abstract: A bicycle helmet, comprising:  an integrally molded helmet body having an inner shell and an outer shell, the inner and outer shells being concentrically spaced apart and integrally connected to each other by first shell connectors disposed proximate an edge portion of the helmet body.  The inner and outer shells further being integrally connected by second shell connectors disposed proximate an intermediate portion of the shells spaced from the edge portion.  The second shell connectors include an annular wall of a through opening contained in the helmet body between the shells, the annular wall including integrally molded converging wall portion and diverging wall portion in a direction from the outer shell to the inner shell, thereby to reinforce the helmet body, the spaced apart inner and outer shells forming an air passageway therebetween, the air passageway being filled with air.  An air outlet being disposed on the helmet body, the air outlet being in fluid communication with the air passageway, the air in the air passageway being dischargeable through the air outlet in case a shock, impact force results in a pressure on the shells.