baber/WOPTO huggingface dataset:
Patent CA-2055261-C (CA)
Title: High productivity joint compounds
Inventor: PODLAS THOMAS J
IPC: C08L1/28
Filed: 1991-11-12
Granted: 2005-10-18
Abstract: Water demand in an aqueous joint compound composition is increased by incorporating a blend of water soluble polymer (WSP) and crosslinked polyacrylic acid water demand polymer (WDP) with a WSP to WDP blend ratio of 9:1 to 25:1. A preferred WSP is hydrophobically modified hydroxyethylcellulose. This blend may also be used for aqueous tile adhesives.        In the joint compound the thickener. comprising water-soluble cellulose ether(s) and water-insoluble but swellable polyacrylic acid or salt thereof, the acrylic component gives increased joint compound viscosity without the need to decrease water level or increase thickener level.
Patent CA-2056830-C (CA)
Title: High tension cable device
Inventor: YAGI KIYOSHI
IPC: F02P15/00
Filed: 1991-11-28
Granted: 1996-11-12
Abstract: A high tension cable device for use with an ignition system having a discharge tube for forming a series gap therein in an automobile engine or the like.   The device comprises a cylindrical casing having a connecting terminal therein in a firmly engaged form at one end thereof, which connecting terminal being engageable with a terminal of an ignition plug for an engine; an auxiliary functional section composed of one or a plurality of auxiliary functional parts such as the discharge tube which are fixedly inserted into the cylindrical casing, wherein the front end of the auxiliary section  is  connected to the rear end of  the connecting terminal, and the rear end thereof is connected to a terminal of a high tension cable side.   The cylindrical casing is formed by an electrically insulating rigid material and the outer periphery of the auxiliary section is covered with an electrically  insulating  elastic  layer,  which  cylindrical casing and elastic layer form a space between respective inner and  outer  surfaces,  whereby  such  problems  as  creeping discharge, insulation breakdown and so on can be eliminated.
Patent CA-2058948-C (CA)
Title: Processes for the recovery of naturally produced chymosin
Inventor: HEINSOHN HENRY G
IPC: C12R1/685
Filed: 1990-06-13
Granted: 1995-05-02
Abstract: Disclosed  are  methods  for  the  recovery  and purification  of  naturally  produced  chymosin.    In particular, disclosed are methods for the recovery and purification  of  chymosin  from  aqueous  solutions containing chymosin, pepsin and other contaminants.
Patent CA-2059770-C (CA)
Title: Fully-hydraulic steering unit
Inventor: ARBJERG NIELS
IPC: B62D5/083
Filed: 1992-01-21
Granted: 1995-01-31
Abstract: A fully-hydraulic steering unit (1) is described, with a housing (2) which has an internal bore (3) in which, inter alia, a control channel (6) and a tank channel (7) are arranged, with an outer sliding member (4) rotatably mounted in the internal bore (3) and an inner sliding member (5) rotatably mounted in the axial internal bore of the outer sliding member, which inner sliding member has servo openings (8) and tank bores (9).   Furthermore, a pressure slot for receiving a fluid producing a pressure between the inner sliding member and the outer sliding member  is provided.     With a steering arrangement of this kind, there is a risk that a pressure prevailing in the control channel (6) will act from the outside on the outer sliding member so that it jams on the inner sliding member.   Furthermore there is a danger that a pressure acting in the pressure slot will act from the inside on the outer sliding member so that it jams against the housing.   With the present invention, jamming of the outer sliding member is prevented in every operational position.     For that purpose, the pressure slot (12) is permanently in connection with the control channel (6) by way of an open fluid path (10, 11).
Patent CA-2064837-C (CA)
Title: Conduite tubulaire flexible comportant une nappe d'armure agrafee et son procede de fabrication
Inventor: MALLEN HERRERO JOSE
IPC: B29D23/00
Filed: 1991-07-01
Granted: 2004-03-23
Abstract: Conduite tubulaire flexible comportant de l'intérieur vers l'extérieur, un tube ou une gaine d'étanchéité interne, une armure composée d'une pluralité des nappes d'armure. L'armure est constituée par : - une première nappe d'armure (4) sur laquelle prend appui le tube ou la gaine d'étanchéité interne (3), cette première nappe d'armure est constituée par une pluralité des fils agrafés (10) armés avec un angle A1 inférieur à 80.degree. par rapport à l'axe (2) de la conduite tubulaire flexible (1), - un ensemble de nappes d'armures (5) placé à l'extérieur de la première nappe d'armure (4) comportant au moins uns nappe d'armure, les fils (10A) dudit ensemble étant non agrafables et disposés de manière que l'ensemble des angles d'armage desdits fils dudit ensemble des nappes d'armure soit complémentaire de l'angle A1, de façon à obtenir une conduite tubulaire flexible équilibrée.
Patent CA-2066595-C (CA)
Title: Hob for generating face gears
Inventor: CUYPERS MARTINUS HUBERTUS
IPC: B24B3/12
Filed: 1990-09-28
Granted: 2000-04-25
Abstract: A cutter for producing face gears, comprising a disc-shaped cutter body with cutting teeth fitted on periphery. The cutting edge of each cutting tooth lies in a surface of revolution which is produced by turning an imaginary gear wheel of infinitely low thickness about the axis of the cutter and simultaneously about its own axis.      Each cutting tooth of the cutter is of such a shape that the cutting tooth is re-grindable, without the shape of the cutting edge of the cutting tooth changing as a result.      This is achieved through the fact that the profile of each cutting tooth shifts in planes from the cutting edge of the cutting tooth to the rear side thereof in the direction of the axis of the cutter.
Patent CA-2074795-C (CA)
Title: Method and apparatus for extracting particles from containers
Inventor: FORESHEW ALAN LEONARD
IPC: B08B9/093
Filed: 1992-07-28
Granted: 2003-07-01
Abstract: A method and apparatus for extracting particles from containers. The method comprises the steps of con-ducting high pressure air from a source thereof and into the containers to loosen the particles from the contain-ers, and connecting the containers to a low pressure source to withdraw air and loose particles from contain-ers. The apparatus comprises a source of pressurized air, and a high pressure line connected to that source to conduct the pressurized air to the containers to loosen the particles from the containers. The apparatus further comprises a low pressure source, and a low pressure line to connect the containers to the low pressure source to withdraw air and the particles from the containers. Preferably, in both the method and apparatus, the contain-ers are moved beneath one or more caps that are used to generally close the tops of the containers, and each cap is connect to both the high and low pressure sources. With this preferred arrangement, high pressure air is conducted through the cap and into the containers to loosen particles therein, and the containers are connected to the low pressure source by connecting the cap to that source to withdraw air and particles from the containers via the cap.
Patent CA-2077252-C (CA)
Title: Methods of making ureas and guanidines, and intermediates therefor
Inventor: KARIMIAN KHASHAYAR
IPC: C07D405/12
Filed: 1992-08-31
Granted: 2001-04-10
Abstract: Novel methods for the synthesis of substituted ureas and guanidines including Terazosin, Prazosin, Doxazosin, Tiodazosin, Trimazosin, Quinasin and Bunazosin (exemplary of 2-amino substituted Quinazolines), Meobentine and Bethanidine and novel intermediates suitable for use in such methods of synthesis are taught.
Patent CA-2080630-C (CA)
Inventor: AMINI NADER
IPC: G06F13/22
Filed: 1992-10-15
Granted: 1996-10-22
Abstract: A computer system is provided comprising system memory and a memory controller for controlling access to system memory, a central processing unit electrically connected with the memory controller, and a bus interface unit electrically connected to the memory controller by a system bus and electrically connected to a plurality of input/output devices by an input/output bus. The bus interface unit is able to sense when said one of said input/output devices has completed a read or write operation over said input/output bus, and includes a buffer circuit wherein read and write data transferred between the system bus and the input/output bus via the bus interface unit is temporarily stored during the transfer. Arbitration control logic resides in said bus interface unit and interacts with a central arbitration controller which resides on the system bus. The central arbitration controller responds to the arbitration control logic to simultaneously perform (i) arbitration cycles wherein the central arbitration controller arbitrates between the plurality of input/output devices and the central processing unit to determine which of the input/output devices or the central processing unit should be granted control of the input/output bus and (ii) grant cycles wherein the central arbitration controller grants control of the input/output bus and extends control of the system bus to one of the input/output devices or the central processing unit.
Patent CA-2087354-C (CA)
Title: Process for working up a hydrogen fluoride phase from a fluorination reaction mixture
Inventor: EICHER JOHANNES
IPC: C07C17/38
Filed: 1993-01-15
Granted: 1999-12-21
Abstract: A process for working up the hydrogen fluoride phase of reaction mixtures from fluorination reactions comprising contacting the hydrogen fluoride phase with oleum in order to obtain dried hydrogen fluoride, which can be recycled to the fluorination reaction.
Patent CA-2099115-C (CA)
Title: Process for the production of mixtures of 2-hydroxytetrahydrofuran and 4-hydroxybutanal
Inventor: FALLING STEPHEN NEAL
IPC: C07C45/59
Filed: 1992-05-14
Granted: 1997-10-28
Abstract: Disclosed is a process for the production of an equilibrium mixture of 2-hydroxytetrahydrofuran and 4-hydroxybutanal by a two-step process comprising (1) heating 2,5-dihydrofuran in the presence of a catalyst system comprising a phosphine, ruthenium or rhodium to convert the 2,5-dihydrofuran to 2,3-dihydrofuran; and (2) contacting 2,3-dihydrofuran with water in the presence of an acidic catalyst to convert the 2,3-dihydrofuran to a mixture of 2-hydroxytetrahydrofuran and 4-hydroxybutanal. Also disclosed is a process for the continuous production of an aqueous solution of 2-hydroxytetrahydrofuran and 4-hydroxybutanal. The mixture of 2-hydroxytetrahydrofuran and 4-hydroxybutanal may be catalytically hydrogenated to produce 1,4-butanediol.
Patent CA-2102270-C (CA)
Inventor: SHIOZAWA TAKAHIRO
IPC: H01S5/042
Filed: 1993-11-02
Granted: 1999-04-06
Abstract: The output light of a variable-wavelength light source 101 is brought to incidence on an optical resonator 103 having a periodic transmitting characteristic, and the transmitted light is detected by an optical intensity detector 105 and, having the difference from a reference level as the error signal, fed back by an operational amplifier 106 to the variable-wavelength light source 101.  Therefore the output light frequency of the variable-wavelength light source 101 is stabilized at the shoulder of the peak of the transmitting characteristic (the point where the transmittance varies) of the optical resonator 103.  Wavelength switching is accomplished by selecting one out of two variable current sources built into a wavelength control circuit 108.  This variable current source switching forcibly shifts the stabilization point to the shoulder of the peak of another transmittance of the optical resonator 103.  Upon supply of a wavelength designation signal 100-2 from outside, the output current value of the variable current source which is at present in a stand-by state is set at a value corresponding to the designated wavelength.
Patent CA-2108785-C (CA)
Inventor: SANG JEAN VICTOR
IPC: C01F7/473
Filed: 1992-05-01
Granted: 1998-06-16
Abstract: A process is described for removing sodium oxalate from a sodium aluminate liquo r produced through bauxite digestiol using the Bayer process. The novel sodium oxalate removal procedure comprises th e steps of (a) continuously generating new and reactive seed particles of sodium oxalate by mixing together an aqueous solution of sodium oxalate and a portion of said Baye proccss sodium aluminate liquor to achieve a concentration of sodium oxalate wit hin a range to generate spheroidal particles o sodium oxalate (b) adding a suspension of said spheroidal panicles of sodium oxa late as seed to a second portion of said Baye proccss sodium aluminate liquor, to thereby precipitate the remainder of dissolv ed sodium oxalate and (c) sepatining the sodiun oxalate precipitate, leaving a liquor of reduced sodium oxalate contamination. T he spheroidal panicles are formed by controllin the concentration of sodium oxalate at a level about 5% to about 75% above auton ucleation concentration.
Patent CA-2109677-C (CA)
Inventor: MENCHETTI ROBERT J
IPC: E04B2/58
Filed: 1993-11-22
Granted: 2003-04-29
Abstract: A hollow shaft wall with horizontal studs held between corner posts and an intermediate vertical wall support post, which intermediate post has a central reinforcement channel, the reinforce-ment channel has a bottom and two side walls, the channel is filled with strips of gypsum board, and the two side walls have metal channels affixed thereto providing oppositely opening grooves for receiving and supporting the ends of said horizontal studs.
Patent CA-2111906-C (CA)
Inventor: ANDERSON PHILIP A
IPC: B32B5/26
Filed: 1993-12-20
Granted: 2005-03-01
Abstract: A microfibrous sorbent article is provided. The microfibrous sorbent article comprises an elongate boom having a substantially oval cross-section.  The boom is formed of multiple adjacent microfibers layers, the layers being bonded to each other by entanglement of fibers between adjacent layers. Also provided is a method fox making the microfibrous sorbent article.
Patent CA-2114368-C (CA)
Inventor: LOCATI SANTINO
IPC: A47J31/40
Filed: 1994-01-27
Granted: 2005-09-06
Abstract: Automatic coffee machine has ground coffee deposited into an infusion chamber, in which it is compressed between an infuser piston and a filter piston. A packing stabilizes the seal between the infusion chamber and the infuser piston. The infuser piston is divided into two parts, with one part sliding into the other part against an opposing spring resistance.
Patent CA-2115715-C (CA)
Title: Sensor device for measuring vital parameters of a fetus during labor and delivery
Inventor: RALL GERHARD
IPC: A61B5/288
Filed: 1994-02-15
Granted: 2004-07-20
Abstract: A sensor device used as part of a measurement device with a measurement unit for measuring vital parameters of a fetus during labor and delivery. The sensor is attached to the presenting part of the fetus for the duration of labor and delivery. In order to prevent the arterial blood flow in the fetal tissue at the measurement point from being impaired by attachment of the sensor to the fetal tissue, the sensor has an approximately round, curved cup which forms a concavity on its concave side and is subdivided into an attachment zone at the center and an elastic peripheral zone surrounding it where the light emitter and receiver are arranged, whereby the peripheral zone of the cup attached to the fetal tissue rests in a flexible, spring-loaded manner on the fetal tissue.
Patent CA-2118757-C (CA)
Inventor: BALKOVEC JAMES M
IPC: A61K38/08
Filed: 1994-03-10
Granted: 2002-05-14
Abstract: Ceretain aza cyclohexapeptide compounds have been found to have superior antibiotic properties. Novel processes for their preparation are also described.
Patent CA-2119682-C (CA)
Inventor: MZIK JOSEPH
IPC: C09K8/68
Filed: 1994-03-23
Granted: 1997-05-06
Abstract: A  fracturing  fluid composition  is  described  for  use  in fracturing low temperature underground formations, such as oil or gas wells.   It includes at least one anhydrous aliphatic alcohol,  a modified guar gum polymer,  and as a complexor,  a sodium perborate salt.  A gel breaker is also provided, including sodium perborate which acts over a time period to degrade the guar gum cross linked polymer and thereby reduce the viscosity of the gel, to aid in the removal thereof from a well.
Patent CA-2120941-C (CA)
Inventor: DORSEMAINE JEAN-PIERRE
IPC: E03F5/10
Filed: 1992-10-07
Granted: 2001-12-25
Abstract: PCT No. PCT/FR92/00930 Sec. 371 Date Jun. 8, 1994 Sec. 102(e) Date Jun. 8, 1994 PCT Filed Oct. 7, 1992 PCT Pub. No. WO93/07345 PCT Pub. Date Apr. 15, 1993A structure having at least one layer (3.1), for example three layers (3.1, 3.2, 3.3), of a number of juxtaposed sheet blocks, in which the sheets are shaped so as to define between themselves a series of vertical cells for water storage, and a series of horizontal cells in the height of the blocks for water drainage. The horizontal cells communicate with the vertical cells. The structure is light, inexpensive, easy to install without requiring heavy handling means, and is especially useful in underground water reservoirs.
Patent CA-2130688-C (CA)
Title: Recording and/or reproducing apparatus for recording medium and damper mechanism employed in such apparatus
Inventor: YAMADA TOMOHIRO
IPC: G11B25/04
Filed: 1994-08-23
Granted: 2004-02-10
Abstract: The recording and/or reproducing apparatus according to the present invention includes a recording and/or reproducing unit finely movably mounted within a main body of the apparatus via plural damper units. The recording and/or reproducing unit has a holder for the disc cartridge rotatably mounted thereon for holding and loading or unloading the disc cartridge on or from the recording and/or reproducing unit. A rotary member is rotatably mounted on the main body of the apparatus for covering the recording and/or reproducing unit. An engagement member is mounted on the inner surface of the rotary member for engaging with the holder for rotating the holder in a direction of loading and unloading the recording medium by an opening of the rotary member. The engagement member is movably mounted on the rotary member. When the rotary member covers the recording and/or reproducing unit, and the recording and/or reproducing unit is finely moved within the main body of the apparatus, so that the recording and/or reproducing unit is contacted with the engagement member, the engagement member is moved so as to follow up with the fine movement of the rotary member. The apparatus also includes a biasing member for perpetually biasing the engagement member in a direction of being engaged with the holder.
Patent CA-2139526-C (CA)
Inventor: XU MANQUI
IPC: B01F5/04
Filed: 1995-01-04
Granted: 1999-10-26
Abstract: A column flotation system including tailings recirculation. The system includes a column for particle separation and a gas injected reactor providing the site for bubble generation within a treated slurry feed. The reactor may contain a plurality of the spaced internal discs that cause shearing of the slurry to generate and entrain bubbles therein.      The column may contain internal partitions in order to accommodate additional reactors. Recirculation of the tailings permits increased bubble control and improved particle separation.
Patent CA-2156025-C (CA)
Inventor: TISBO THOMAS A
IPC: A47B3/02
Filed: 1995-08-14
Granted: 1999-09-14
Abstract: The present invention is a foldable tray table of modular construction with readily replaceable and interchangeable plastic molded components which can be assembled by hand and include a tray having an underside with a pair of first legs and second legs connected thereto.  The upper end of each first leg has a journal pin operatively adapted for being disposed and snap-fit between one pair of journal mounting brackets formed on the underside of the tray.  When its journal pin is so disposed, each first leg is pivotal relative to the tray.  The second legs are joined together at their upper ends by an integral locking bar. A pivot plug is formed intermediate the ends of and extending from one of each of the first legs and the second legs for interconnecting with a pivot hole formed intermediate the ends of and in the other of each of the first legs and the second legs.  Each pivot plug is operatively adapted for being snap-fit in one pivot hole such that each first leg and second leg so connected are pivotal relative to one another.  Two clips are used to releasably connect the locking bar to the tray.  Each clip is operatively adapted for being snap-fit in a snap-on hole in a clip mounting bracket formed on the underside of the tray opposite to the journal mounting brackets.  The locking bar is releasably retained by each clip.
Patent CA-2157123-C (CA)
Title: Device for producing individual stacks of sheets
Inventor: ZAHN ERICH MICHAEL
IPC: B65H33/02
Filed: 1994-01-27
Granted: 1998-12-15
Abstract: The invention relates to a device for the non-stop operation of e.g. a delivery unit of a rotary printing machine in which sheets (6) in a flow of sheets are collated into individual stacks (10, 10') supported on a stack base (2) with a surface (2.1) interrupted by grooves (2.2) and in which auxiliary stacks (9) are borne by grid rods (12) together forming a rack (11) until their transfer to the stack base (2), said rods (12) penetrating into the grooves (2.2) during transfer. To prevent the stacks (10, 10') from being hampered by their weight, according to the invention a receiving plate (13) catching the auxiliary stack (9) from below is laid upon the grid rods (12) in their reception position.
Patent CA-2161958-C (CA)
Inventor: MOUBAYED AHMAD-MAHER
IPC: C12N5/07
Filed: 1995-03-03
Granted: 2010-02-23
Abstract: An apparatus and method for performing a magnetic cell separation process using paramagnetic beads, and having multiple steps or activities which are required to complete the process successfully includes using a programmable machine to either perform selected ones of the multiple steps itself; or to prompt a human attendant to perform others of the steps in sequence, and to thereafter provide to the machine a verification input that the step to be performed by the human attendant is completed. The repeatability and reliability of the process when performed with the programmable machine is vastly improved in comparison to conventional laboratory practice. Additionally, the programming of the machine may be altered by supervisory personnel to improve the efficacy of the process, or to customize the process for the separation of a particular type of cell.
Patent CA-2174165-C (CA)
Title: A coupling
Inventor: HOLLANDS KEITH G M
IPC: F16L37/088
Filed: 1996-04-15
Granted: 2007-11-13
Abstract: A coupling, which may be an ostomy coupling but could be any kind of tube or pipe coupling, includes a first coupling member 10 and a second coupling member 30 which are mutually interengageable and which surround an orifice 70.    The coupling also includes a resilient split ring 50 which encircles the two coupling members and has a handle member 51 which can be manipulated to cause the split ring to be deformed. This causes the radially-inwardly extending tabs 52 on the ring to be shifted between respective first positions in which the split ring is undeformed and the tabs lock the two coupling members together and respective second positions in which the split ring is deformed in such a way as to shift the tabs radially outwardly to positions where they permit separation of the two coupling members.   The split ring is desirably made of a relatively rigid but springy plastics material, for example an acetal resin. The tabs carried by it are provided with curved or angled ramp surfaces which, when the ring is deformed by a force tending to rotate it relative to the coupling members, cause the tabs to be withdrawn from slots in one of the coupling members so permitting the two coupling members to be separated.