baber/WOPTO huggingface dataset:
Patent CA-2015758-C (CA)
Title: Collapsible filter for a fluid power apparatus
Inventor: ISAKSON LARRY EDWARD
IPC: B60T13/16
Filed: 1990-04-30
Granted: 2000-12-12
Abstract: A fluid power apparatus (10) includes a power piston (40) dividing a working chamber (18) from a first chamber (16), the power piston (40) biased toward a rest position by a spring (17) and the piston (40) displaced by means of restricting fluid flow between the working chamber (18) and first chamber (16). In order to keep contaminants from entering the first chamber (16), a collapsible filter (80) is disposed about a piston rod (13) of the power piston (40), the filter (80) having at an end cap (88) with a central opening (91) through which extends the piston rod (13) and at an opposite end member (98) a flange (95) which0 serves as a seat (97) for the spring (17). The end member (98) seats sealingly against the power piston (40) while the end cap (88) has a sealing mechanism (92) about the periphery of the central opening (91) to provide sealing between the end cap (88) and input rod (13). If during operation of the fluid power apparatus (10) the end cap (88) should engage an opposite wall (15) of the first chamber (16), the filter (80) collapses and permits continued full stroke displacement of the power piston (40) without damage to the filter (80). Should the filter (80) become clogged, the spring (17) seated upon the flange (95) permits the flange (95) to lift away from the power piston (40) so that fluid may bypass the filter (80) and effect continued operation of the fluid power apparatus (10).
Patent CA-2017779-C (CA)
Title: Fluid distribution device
Inventor: CROSS DAVID J
IPC: B05B5/04
Filed: 1990-05-29
Granted: 2000-08-08
Abstract: This invention relates to a fluid distribution device in the form of a sprayer. A preferred embodiment of the sprayer uses a rotating fluid conduit which makes use of centrifugal force to break up fluid emerging from the conduit into fine droplets. Air flow though the preferred embodiment may shear the fluid droplets and assist in carrying them to the desired target. Means for placing an electrostatic charge on the droplets may also be used.
Patent CA-2022440-C (CA)
Inventor: LETEMPS BERNARD
IPC: C03B23/025
Filed: 1990-08-01
Granted: 2001-09-18
Abstract: L'invention a pour objet un rouleau de formage pour une installation de bombage de feuilles de verre constitué par un cylindre de révolution entraîné en rotation cintré entre deux plans perpendiculaires à l'axe de symétrie du rouleau, chaque plan coupant le rouleau à proximité d'une de ses extrémités, les deux portions extrêmes extérieures aux plans sécants étant maintenues droites.  Elle concerne également une machine à lit de conformation courbe en direction d'avancement des feuilles de verre, constitué par des ensembles de rouleaux selon 1.degree.invention.  L'invention s'applique à la production de vitrages bombés trempés de forme complexe.
Patent CA-2025434-C (CA)
Title: Method for protecting against the unauthorized use of software in a computer network environment
Inventor: CORBIN JOHN RICHARD
IPC: G06F21/12
Filed: 1990-09-14
Granted: 1995-11-28
Abstract: The present invention provides to the software application the verification and license check out functions which are normally performed by a license server. The encrypted license information is contained in a license token, and is stored in the database controlled by the license server. In contrast to the prior art where the license server either grants or denies the request after verifying the user's credentials, the license server in the preferred embodiment of the present invention finds the correct license token for the software application and transmits the license token to the licensing library. The license access module attached to the application decodes the licensing token. Routines in the licensing library coupled to the software application verify the license information before checking out the license and updating the license token. The license access module then encodes the updated license token before returning it to the license server. Because the verification and check out function of a license token are performed by a software application, the software application rather than the license server becomes the point of attack by unauthorized users. Reverse engineering the license access module is less rewarding than attacking the license server because the license access module reveals the contents of a small fraction of a database of licenses.
Patent CA-2026447-C (CA)
Title: Food product
Inventor: CARRELL REBECCA SUSAN
IPC: A23L29/20
Filed: 1990-09-28
Granted: 1996-04-23
Abstract: A process for the manufacture of a lysophospholipoprotein (LPLP)-comprising foodstuff comprises incorporating dried LPLP or dried LPLP-comprising material, preferably having a moisture content of at most 10 wt%, at a level of 0.1-90 wt.% therein.            Use of dried LPLP as a texture-modifying agent, a glossing agent, a freeze-thaw stabilizing agent, a heat-stabilizing agent and a syneresis-inhibiting agent, as well as the foodstuff per se has also been claimed.
Patent CA-2028465-C (CA)
Title: Novel anthracycline glycoside derivatives and preparing method thereof
Inventor: OK KWANG D
IPC: A61K31/704
Filed: 1990-10-24
Granted: 1999-06-08
Abstract: A compound of the formula (I):                             (see fig. I) wherein  R1  and R2  represent respectively hydrogen atom or together form straight or branched alkylidene group of 1-10 carbon atoms; Y represents (see fig. II)   or     (see fig. III)   , R3 represents hydrogen atom,   C1-10 alkyl group or C1-10 alkoxycarbonyl, R4 and R5 represent respectively hydrogen atom or C1-5 alkyl group,  n represents 0 or an integer of 1-10, and m represents an integer of 1-5, and pharmaceutically acceptable salt thereof are novel and have an excellent antitumor activity.
Patent CA-2028626-C (CA)
Title: Process for producing 5,6,7-trinor-4,8-inter-m-phenylene pgi2 derivatives
Inventor: OHNO KIYOTAKA
IPC: C07C41/16
Filed: 1990-02-27
Granted: 1997-12-09
Abstract: The present invention provides a process for preparing 5,6,7-trinor-4,8-inter-m-phenylene PGI2 derivative [VII] using 3a,8b-cis-dihydro-3H-5,7-dibromocyclopenta[b]benzofuran (1) as a starting material, as well as compounds of the formulae (8) and (11) which are intermediates for the preparation of the compound of the formula (1).     (see fig. I) The processes of the present invention are useful for producing m-phenylene PGI2 derivatives on an industrial scale, which are useful as pharmaceuticals.  The process of the present invention has higher yield and the operations (especially purification) are easier than conventional processes.
Patent CA-2032808-C (CA)
Title: Attitude control device using solar sails for a satellite stabilized on three axes
Inventor: FLAMENT PATRICK
IPC: B64G1/40
Filed: 1990-12-20
Granted: 2000-03-21
Abstract: An attitude control device for a satellite stabilized on three axes including a pitch axis comprises two solar generator wings extending in opposite directions away from a satellite body on respective longitudinal axes at least approximately parallel to the pitch axis. Two drive motors drive these wings independently of each other in rotation about rotation axes at least approximately parallel to the pitch axis to keep the wings facing the Sun with a depointing angle at most equal to a predetermined maximum depointing value.      Sensors measure attitude angles and a computation system commands the drive motors according to the attitude angles. On each wing an additional surface in the form at least one vane extends longitudinally beyond the end of the wing parallel to its longitudinal axis. These additional surfaces have substantially the same surface area and are inclined about this axis relative to the wings in opposite directions by at least approximately the same angle which is less than the 90° complement of the maximum amplitude of wing depointing.
Patent CA-2033770-C (CA)
Inventor: MONTGOMERY FREDERICK J
IPC: A61M16/14
Filed: 1991-01-08
Granted: 1994-07-19
Abstract: An anaesthetic vaporiser 1 for use particularly with anaesthetic agents having a low boiling point comprises an inlet 2 for carrier gas and an outlet 4 for carrier gas and gaseous anaesthetic agents.  A first passage 6 extends between the inlet 2 and the outlet 4.  A flow restrictor 8 is located within the passage 6.  A second passage 10 extends between the first passage 6 at a location upstream of the flow restrictor 8 and a regulator 14.  The regulator 14 controls the pressure of gaseous anaesthetic agent when flowing through a third passage 26 extending from a vaporising chamber 12 containing anaesthetic agent to the first passage 6 at a location downstream of the flow restrictor 8.  A flow control valve 28 is located in the third passage 26.
Patent CA-2033975-C (CA)
Title: Use of .beta.-receptor blocking agents
Inventor: GERUP BENGT
IPC: A61K31/535
Filed: 1990-07-25
Granted: 1993-10-26
Abstract: ABSTRACT            The present invention relates to a novel use of .beta.-receptor block-ing agents for preparation of a drug for treatment of Ménières disease.
Patent CA-2041094-C (CA)
Title: Electrolyzer
Inventor: WUELLENWEBER HEINZ
IPC: C25B9/00
Filed: 1991-04-24
Granted: 2001-02-06
Abstract: In an electrolyzes having bipolar cells, which are arranged in a row and consist each of two metallic partitions, spring-elastic electrodes bearing on the partitions, end a diaphragm, which is disposed between the electrodes end is spaced from the electrodes by spacers, a contact between the spring-elastic electrodes and the diaphragm is prevented in that the spacers of a cell are disposed directly opposite to each other and aligned with the spacers of the other cells.
Patent CA-2042171-C (CA)
Title: High-speed packet switching apparatus and method
Inventor: FRANK STEVEN J
IPC: H04Q11/04
Filed: 1991-05-09
Granted: 2002-12-10
Abstract: An improved digital packet switching apparatus enabling enhanced packet transmission and high bandwidth packet transfer. The digital packet switching methods and apparatus permit selectively switching digital signal packet between a set of nodes. The invention includes multiple processing cells, each having a processor coupled to an associated content-addressable memory element. Packet processors, electrically coupled to the memory elements, selectively receive packets from the nodes and transmit the packets into at least one of the plural memory elements; or receive packets from the memory elements and transmit the packets to at least one of the nodes. One aspect of the invention includes memory management elements, coupled to the memory elements, for accessing one or more of the information-representative signals stored in the plural memory elements. The in-cell processors can include access request elements for requesting access to an information-representative signal. The access request element can also generate an ownership-request signal to request priority access to an information-representative signal. In another aspect of the invention, the memory element associated with the requesting processor includes control elements for selectively transmitting the access-request signal to the memory management element. The memory management elements can also include memory coherence elements. These coherence elements respond to certain ownership-request signals by exclusively allocating physical storage space in the memory element associated with the requesting processor and storing the requested information-representative signal therein.
Patent CA-2047006-C (CA)
Title: Method of determining the drilling conditions associated with the drilling of a formation with a drag bit
Inventor: DETOURNAY EMMANUEL
IPC: E21B44/00
Filed: 1991-07-12
Granted: 2004-02-10
Abstract: This invention is based on a new model describing the drilling process of a drag bit and concerns a method of determining the drilling conditions associated with the drilling of a borehole through subterranean formations, each one corresponding to a particular lithology, the. borehole being drilled with a rotary drag bit, the method comprising the steps of: measuring the weight W applied on the bit, the bit torque T, the angular rotation speed .omega. of the bit and the rate of penetration v of the bit to obtain sets of data (W i, T i, .nu. i, .omega. i) corresponding to different depths;  calculating the specific energy E i and the drilling strength S i from the data (W i, T i, .nu. i, .omega. i); identifying at least one linear cluster of values (E i, S i), said cluster corresponding to a particular lithology; and determining the drilling conditions from said linear cluster. The slope of the linear cluster is determined, from which the internal friction angle .phi. of the formation is estimated. The intrinsic specific energy a of the formation and the drilling efficiency are also determined. Change of lithology, wear of the bit and bit balling can be detected.
Patent CA-2056691-C (CA)
Inventor: TAMURA ITSURO
IPC: F17C13/02
Filed: 1991-11-29
Granted: 1995-02-14
Abstract: A control apparatus for maintaining constant the temperature and pressure of the vapor phase in a very low-temperature controlled liquefied gas container includes a pressure sensor, a temperature sensor, two electromagnetic valves, and a refrigerator. When operation of the refrigerator disturbs measurement at low temperature, the refrigerator is stopped. Gas vaporizes from a liquid phase, and gas is discharged from the container. In this manner, the temperature and pressure of the liquefied gas in the container can be maintained constant. After measurement, the liquid level in the container will be lowered by evaporation, so that the liquefied gas is supplied to the container. In this manner, the liquid level in the container can be maintained constant.
Patent CA-2058896-C (CA)
Title: Rigid contact lenses with improved oxygen permeability
Inventor: MUELLER KARL F
IPC: C08F290/06
Filed: 1992-01-07
Granted: 2004-08-03
Abstract: Hard polymers with extremely high oxygen permeability are described, which consist of the copolymerization product of 1-15 % by weight of a poly-(dimethylsiloxane) bearing multiple polymerizable vinyl groups and having a number-average molecular weight M n of 1000-8000, 20-50 % of an oligosiloxanylalkyl (meth)acrylate, 25-50 % of an at least three fluorine atoms containing vinyl-monomer, 0-30 % of copolymerizable monomers which by themselves as homo- or copolymers have a Shore-D hardness of at least 85, 1-25 % of polyvinyl-crosslinking monomer of 100-1000 molecular weight, and 0-15 % of a watersoluble, copolymerizable monomer. The novel polymers combine a Shore-D hardness of 70-85 with an oxygen permeability of 40-90 barrers, making them outstanding materials for the manufacture and use as rigid, gas-permeable contact lenses.
Patent CA-2063493-C (CA)
Title: External apparatus for monitoring a communication system
Inventor: ASANO MITSUYO
IPC: H04M3/22
Filed: 1992-03-19
Granted: 1998-09-22
Abstract: The  external  monitoring  apparatus  in  a communication system has a configuration comprising a common line signaling unit for separating a message communication function from a communication function and transmitting a data communication signal through an exclusive line, a communication processing unit for processing the communication using the common line signaling unit, and an alarm processing unit for raising an alarm when an abnormal condition has arisen in the communication associated with the common line signal processing unit, the alarm processing unit comprising external communication monitoring means for monitoring an abnormal condition in communication control by the communication processing means.
Patent CA-2063819-C (CA)
Inventor: ANDERSEN CARSTEN
IPC: A61K9/68
Filed: 1990-07-18
Granted: 2000-02-22
Abstract: A chewing gum composition with accelerated, controlled release of active agents comprising one or more active agents, a chewing gum base and optionally conventional auxiliary agents and additives.  The chewing gum is prepared on the basis of a chewing gum base having a resin component containing at least 25 weight % of a particular resin. The accelerated, controlled release of the active agents is obtained by adding at least one solubilizer in a quantity of 0.1-30 weight % to the chewing gum composition.
Patent CA-2064080-C (CA)
Title: Ground fault circuit interrupter having loss of neutral or loss of ground protection
Inventor: MATSUOKA JOSEPH M
IPC: H02H3/14
Filed: 1990-05-17
Granted: 1999-06-08
Abstract: A ground fault circuit interrupter (1) is described which provides protection in the event of loss of neutral (3) or ground (4), excess potential between neutral and ground and reversed input connections.  Separate, independent tripping circuits are used for these latter faults and for ground faults, thus eliminating problems due to interfering signals and reducing reliance on any one or group of components. An opto-emitter (25) and opto-detector (30) arrangement  is used for detecting and causing tripping of a circuit breaker (6) in the event of faults other than ground faults.
Patent CA-2064105-C (CA)
Title: Universal, spring loaded access door
Inventor: SZYJKOWSKI JERZY
IPC: B60J5/00
Filed: 1992-03-23
Granted: 1995-12-05
Abstract: A removable access door for covering small openings in walls and ceilings includes a panel member and at least two devices  for  removably  attaching the panel member to the structure.  Each device includes a clamping member pivotally mounted adjacent a side edge of the panel and an engagement member for pivoting the clamping member from a first position that permits the clamping member to be inserted into the opening towards a second position where the clamping member extends  behind  an  edge  section  of  the  structure.    The engagement member is connected to its respective clamping member and is movable to an initial position to engage and be actuated by an edge section of the structure as the attaching device is inserted into the opening.   A spring biases the attaching devices to swing the clamping members to the second position and releasably clamp the edge sections.  The door can be easily removed with the use of a screwdriver inserted behind the edge of the panel.
Patent CA-2065686-C (CA)
Title: Lightweight and high thermal conductivity brake rotor
Inventor: RHEE SEONG KWAN
IPC: F16D65/12
Filed: 1992-04-09
Granted: 1998-04-28
Abstract: A rotor for use with a caliper in a brake system of a vehicle.  The rotor has a hub with a plurality of openings therein for attachment to an axle which rotates with a wheel of the vehicle.  The hub has spokes which radially extend from the hub to an annular head member. The head member has parallel first and second friction surfaces thereon for engagement with brake pads on actuation during a brake application.  The rotor which is made from a composition having from 50-85 percent by volume of silicon carbide and 50-15 percent by volume of copper has a thermal conductivity of from 280-310 W/mK.
Patent CA-2070163-C (CA)
Title: Hinge lid cigarette carton with innerframe, and blank and method therefor
Inventor: LATIF LINDA S
IPC: B65D85/10
Filed: 1992-06-01
Granted: 2003-11-11
Abstract: A carton for holding several cigarette packs is made so that it generally resembles and functions like a conventional hinge lid cigarette pack. The carton is made from an integral blank including innerframe panels and outer member panels, all arranged in a single side by side series. When the blank is folded to make the carton, the innerframe panels are positioned inside the appropriate outer member panels.      The blank also includes top and bottom tuck flap panels which can be closed in order to close the carton after the innerframe panels have been folded inside the outer member panels as described above. A particularly preferred method of making up the carton is shown. The consumer opens the carton by pivoting an upper portion of the outer member up and to the rear just as with a conventional hinge lid cigarette box. The innerframe interferes somewhat with this lid motion, thereby helping to keep the lid closed as in a conventional hinge lid cigarette box.
Patent CA-2071366-C (CA)
Title: Pretreatment of chromium bearing metal scrap to remove chromium
Inventor: O'CONNELL GARY J
IPC: C22B23/06
Filed: 1992-06-16
Granted: 1997-02-11
Abstract: A process for pretreating chromium-bearing metal scrap comprises charging the chromium-bearing metal scrap with  fayalite  slag into a pyrometallurgical  furnace, heating and melting the charge, and maintaining the charge molten  at  a  temperature  of  at  least  1550°C  for  a predetermined time period to allow an iron oxide/chromium exchange reaction to take place oxidizing and removing chromium to the slag phase while reducing iron to the metal phase to form an alloy product containing Fe along with the Ni and/or Co, and removing the alloy product for further processing for recovery of metal values.
Patent CA-2080510-C (CA)
Inventor: WILLIAMS CHARLES E
IPC: E04G21/14
Filed: 1992-10-14
Granted: 1999-12-21
Abstract: A multidirectional carrier and track generally comprising a disc, a track, and structure on the track defining a disc supporting surface. The disc is supported for rotation about an axis. The disc is in engagement with the disc supporting surface and has first and second ball bearing assemblies. The ball bearing assemblies have inner and outer races, the inner races mounted adjacent one another along the axis. The disc also has an outer cylindrical rim portion, the rim portion having an inner-facing surface, an outer-facing surface and upper and lower surfaces, the inner-facing surface engaging the outer races and the lower surface contacting the track. Structure on the inner-facing surface defines axially spaced faces projecting radially inward towards the axis in step-wise fashion, forming two axially-facing shoulders projecting from the inner-facing surface. The outer races contact the shoulders and are held in the outer rim portion against axial movement in one direction relative to the axis of the support member. A cylindrical reinforcing band surrounds and reinforces the rim portion.
Patent CA-2080545-C (CA)
Title: Salts of hydrazones
Inventor: STANEK JAROSLAV
IPC: A61P31/00
Filed: 1992-10-14
Granted: 2005-11-29
Abstract: The invention relates to acid addition salts of bases of formula I    wherein A, R1, R2, R3, R4, R5, X and Z are as defined in the description, with an acid [PA] that is a mono- or poly-protic acid selected from carbonic acid, alkanoic acids that are unsubstituted or mono- or poly-substituted, with the exception of formic acid, unsubstit-uted acetic acid, lysine and arginine; alkenoic acids that are unsubstituted or substituted, with the exception of unsubstituted fumaric acid; cycloalkylcarboxylic acids, aryl-carboxylic acids, aryl-lower alkylcarboxylic acids, wherein lower alkyl is unsubstituted or substituted, aryl-lower alkenylcarboxylic acids, heterocyclylcarboxylic acids, alkane-sulfonic acids that are unsubstituted or substituted, with the exception of unsubstituted methanesulfonic acid; aromaticsulfonic acids, alkylsulfuric acids, N-substituted sulfamic acids, organic acids without carboxy, sulfo, sulfate or phospho groups, and also selected from pyrophosphoric acid and hydriodic acid; and tautomers thereof. The acid addition salts are used in the treatment of disorders that respond to inhibition of S-adenosyl-methionine decarboxylase.