baber/WOPTO huggingface dataset:
Patent CA-2014551-A1 (CA)
Title: Optical branching equipment and optical network using the same
Inventor: AIDA KAZUO
IPC: H04B10/278
Filed: 1990-04-12
Abstract: ABSTRACT OF THE DISCLOSURE        In optical branching equipment which is supplied with an optical signal of a first wavelength band from a trunk line terminal equipment via a trunk line cable and is inserted in the trunk line, the optical signal is normally provided to the trunk line cable after being bypassed from a branching circuit to branch line terminal equipment connected to a branch line cable, and when trouble develops in the branch line, the optical signal is delivered to the trunk line cable via a short circuit. In the short circuit there is inserted an optical limiter amplifier which is capable of amplifying light of the first and second wavelength bands.  Normally the optical limiter amplifier is saturated by control light of the second wavelength supplied from the branch line terminal equipment via the branch line cable, and consequently, the optical signal of the first wavelength band is suppressed.  When the supply of the control light is stopped by some cause, the optical limiter amplifier amplifies the optical signal of the wavelength band provided to the short circuit and provides the amplified optical signal to the trunk line cable.
Patent CA-2021333-A1 (CA)
Title: Thermal printing apparatus and tape supply cartridge therefor
Inventor: PAQUE MICHAEL W
IPC: B41J35/28
Filed: 1990-07-17
Abstract: A thermal printing device and tape supply cartridge therefor which includes a printing mechanism having a print head incorporated within the machine and a separate printing platen embodied within the cartridge. An alignment mechanism is also provided for insuring printing alignment between the cartridge embodied platen and the print head. The cartridge also includes a mechanism for laminating a film of protective material over the printed tape and a fully incorporated, manually operated tape cut-off mechanism.
Patent CA-2026095-A1 (CA)
Title: Y-delta conversion switches on dual stator induction motor
Inventor: SATAKE TOSHIHIKO
IPC: H02K17/36
Filed: 1990-09-24
Abstract: An induction motor of the invention,  including a single rotor formed in one-piece and first and second stators disposed side-by-side, has a phase-changing device for varying the phase difference between the rotational magnetic field generated by the first stator and that generated by the second stator. The phase-changing device comprises a first connection-changing  switch  which,  in  its  closed  state,  makes  the interconnection of respective stator windings of the stators a first series delta-connection in which the phase difference is 0°.    The  phase-changing  device  also  comprises  a  second connection-changing switch which, in its closed state, makes the interconnection of respective stator windings of the stators a second series delta-connection in which the phase difference is 120°.   When both the first and second connection-changing switches are closed, the interconnection of the stator windings becomes a parallel star-connection in which the phase difference produced is 60°.  During the motor operation, at least one of the first switch and the second switch is always kept in its closed state.  The motor exhibits three different torque curves suitable for starting operation, intermediate speed operation, and normal or steady-state operation by the switching operation of the first and second switches.
Patent CA-2027305-A1 (CA)
Inventor: VAL MICHEL
IPC: D06B11/00
Filed: 1990-10-10
Abstract: Method of artificial aging of textile articles. 
<??>It is characterised in that instead of making use of bodies 2 of a material known for its abrasiveness, the articles are stirred with bodies 2 which, at least over a thick peripheral layer if not entirely, have a homogeneous structure made of a relatively flexible material which has a Shore hardness of between 50 and 70 and a compression value of 55 to 80 and preferably of 65 to 70. 
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Patent CA-2027312-A1 (CA)
Title: Garden tool
Inventor: WEBB NANCY A
IPC: A01D11/06
Filed: 1990-10-11
Abstract: A combination cultivator, rake and hoe having cultivator tines of uneven length parallel to one another and inclined with respect to the handle. A hoe blade, preferably with a sharpened forward edge is connected on one or both ends of the row of cultivator tines extending substantially parallel to the tines and to the handle. Rake tines directed oppositely to the cultivator tines are offset upwardly toward the handle. The uneven lengths of the cultivator tines. reduce the initial force needed to be applied to penetrate the soil and the blade or blades exert substantially no drag when the tines are moved forwardly or backwardly through the soil. The hoe blade or blades can be used with the tool rotated 90° from the cultivating position. The blade is pushed against the stem of weeds or other growth to be removed, slightly below the soil surface.
Patent CA-2027941-A1 (CA)
Inventor: UNDERHILL KENNETH R
IPC: A01F15/07
Filed: 1990-10-18
Abstract: ABSTRACT OF THE DISCLOSURE A method of wrapping cylindrical bales of crop material with sheet material, such as net or plastic film, includes gripping a tail of the sheet material in a dispensing mechanism during formation of a cylindrical bale in a bale forming chamber of an agricultural baler.  After the bale is completed, the dispensing mechanism is moved from a retracted position to a dispensing position and the tail of the sheet material is inserted into the bale forming chamber of the baler.  The sheet material is wrapped circumferentially around the bale while it is disposed in the bale forming chamber, and the dispensing mechanism is returned to the retracted position after one or more layers of the sheet material have been wrapped around the bale.  When the dispensing mechanism has returned to the retracted position, the sheet material is cut by a cutting mechanism.
Patent CA-2028429-A1 (CA)
Title: Process for preparing polyimide composites
Inventor: BOYCE RICHARD J
IPC: C08L79/08
Filed: 1990-10-24
Abstract: TITLE          Process for Preparing Polyimide Composites ABSTRACT Low void composites with high Tg polyimide matrices are prepared from stoichiometrically unbalanced precursors.     XXIV-1.3
Patent CA-2031972-A1 (CA)
Title: Procedure for the production of pulp
Inventor: VAHERI MARJA
IPC: D21H11/08
Filed: 1990-12-11
Abstract: ( 57 ) ABSTRACT OF DISCLOSURE            The  invention relates to a procedure for the  production of mechanical pulp from a fibrous  product. To improve the strength properties,  the  fibrous product is sub-jected  to  a  chemical  and/or enzymatic treatment  in  which  a  binding agent is linked  with  the  lignin  in the fibrous product.  The  bond  between  the binding agent  and the fibre is created either by using   oxidizing  enzymes  or  oxidizing chemicals producing radicals.
Patent CA-2032033-A1 (CA)
Inventor: HOCHSTRASSER FERDINAND
IPC: E03C1/04
Filed: 1990-12-12
Abstract: ABSTRACT OF THE DISCLOSURE           A sanitary fitting includes a fitting housing which has a fixed housing part which is overlapped by a jacket element which can be swivelled about an axis.  Projecting toward the front from the jacket element is a nozzle in which a guide bush is inserted.     Together with the inner wall of the nozzle, the guide bush bounds a jacket space which is connected to the surroundings by a passage.          Furthermore,  the jacket space is communicated by an aeration passage to an annular channel which is communicated by an aeration line to an aeration aperture of a safeguard mechanism.  Water fed through a feed line is mixed in a control cartridge and flows through the safeguard mechanism,  connected downstream from the control cartridge, and through a pipe into a hose to a shower.  In the case of conditions permitting backflow of water into the feed line, the safeguard mechanism prevents backflow and aerates the pipe and the hose while exposing an aeration aperture.  Any water thereby escaping through the aeration aperture is conducted through an aeration channel into a deeper part of a sink.
Patent CA-2033136-A1 (CA)
IPC: E04G3/30
Filed: 1990-12-24
Abstract: A knock-down swing stage base includes a pair of extruded aluminum beams with generally C-shaped cross-sections. The beams are oriented parallel to one another and joined by identical aluminium cross-members. Each cross-member is integrally extruded with paired ribs defining a set of screw receiving passages in a predetermined spacing arrangement. Sets of apertures are formed in the webs of the beams at regular intervals, each set observing the spacing arrangement characteristic of the set of screw-receiving passages. Each cross-member is located with its set of screw-receiving passages simultaneously registered with a set of aperture in one beam and a corresponding set in the other beam. Screws are used to releasably secured the cross-members to the beams. A combination of left-hand and right-hand screws are used to enhance resistance of the base to twisting. Brackets are shaped to receive and slide along an upper flange extruded with each beam. Each bracket carries an upwardly-directed length of pipe for receipt of a vertical post associated with an enclosing structure, such as a hand rail.
Patent CA-2035465-A1 (CA)
Inventor: TANBO NORIHITO
IPC: C02F11/12
Filed: 1990-07-03
Abstract: A method for efficiently thickening and dewater-ing a slurry sludge in a short period of time without the necessity of a vast site, which comprises the steps of: stirring a slurry sludge added with a coagulant in a stirring tank to convert the slurry sludge into a floc; supplying the floc and a supernatant liquid, which are produced in the stirring tank, onto an inlet side of an inclined endless travelling filter cloth of an endless travelling filter cloth type dewatering unit, which comprises a dewatering tank and the above-mentioned inclined endless travelling filter cloth arranged in the dewatering tank; continuously travelling the thus supplied floc, on the endless travelling filter cloth, toward an exit side thereof; thickening the floc on a portion of the endless travelling filter cloth, which portion is located in the supernatant liquid in the dewatering tank, and dewatering the thus thickened floc on a portion of the endless travelling filter cloth, which portion is located above the surface of the supernatant liquid in the dewatering tank.
Patent CA-2038342-A1 (CA)
Title: Automatic bagging machine with bag stabilizing discharge mechanism
Inventor: WETTER BRUNO
IPC: B65B5/08
Filed: 1991-03-15
Abstract: AUTOMATIC BAGGING MACHINE WITH BAG             STABILIZING DISCHARGE MECHANISM                 Abstract of the Disclosure An  automatic  bagging  machine  for  positioning articles in a bag and conveying the bag from the machine in a controlled stabilized manner.    The machine comprises a collector for receiving a predetermined number of articles to be placed in a single bag.  A releasable gate is provided under the collector.   A plurality of collapsed bags,  which have an open top end,  are supported adjacent the releasable gate.    An opener flap is provided to draw open the mouth opening of an outermost one of the bags to position its open end  under  the  releasable  gate.     The  releasable  gate discharges the predetermined number of articles in the bag.          A control gate and a pusher element are provided under the collector to maintain the bag with the articles therein in an upright manner and to move the bag into a bag engaging device which engages the bag under the open top end and maintains the bag upright.
Patent CA-2038725-A1 (CA)
Inventor: BIONDETTE MARIO
IPC: F16C13/00
Filed: 1991-03-20
Abstract: In a controlled deflection roll comprising a roll shell rotatable about a stationary support and braced or supported by support elements at the stationary support, a rotational moment is intentionally exerted at the opposite ends of the roll shell by force-exerting elements. These force-exerting elements extend in axial direction of the controlled deflection roll but are offset in spaced relation with respect to the lengthwise axis of the controlled deflection roll. These force-exerting elements operate in pairs in opposite directions with respect to one another. A lever arm is formed by the distance or spacing between the force-exerting elements and such lever arm exerts a greater rotational moment in the presence of modest space requirements and without deformation of the roll shell.
Patent CA-2039184-A1 (CA)
Title: Magna light level
Inventor: BROWN BRUCE
IPC: G01C9/24
Filed: 1991-03-27
Abstract: ABSTRACT OF THE DISCLOSURE       An improved leveling device is provided and consists of an elongated rectangular body having two parallel sides.          Three bubble vials are disposed in a spaced apart relationship within the body in which the first one is a plumb vial, the second one is a horizontal vial and the third one is a forty five degree vial.  A magnetic strip is affixed to one side of the body which will keep the body in place and steady for an accurate read out when working on a magnetic metal surface.  A scale ruler is on the opposite side of the body so that the body can be used to measure distances.  A mechanism is also provided for illuminating all of the bubble vials so that the vials can be seen in low lighting conditions.  In one embodiment the light source for lighting the level bubble vials can alternately removed and double as a flashlight.
Patent CA-2039867-A1 (CA)
Inventor: REBEAUD JEAN-CLAUDE
IPC: B31B1/12
Filed: 1991-04-05
Abstract: A suction table which, in a machine converting sheets into package, transfers the last, lowermost sheet of a batch to a subsequent processing station. The table is provided with numerous blowing and sucking nozzles and is fitted on a hollow frame movable with regard to a fixed distributory housing which provides sucking and blowing action. The housing comprises a distributory shaft and tubes movable with respect to the table and thereby sliding within corresponding guides formed in the frame. The shaft and tubes are provided with cooperating ducts which will allow the nozzles to suck or blow as required by the angular position of the distributory shaft and the position of the table.
Patent CA-2040310-A1 (CA)
Inventor: SOBIE ROBERT A
IPC: A47C27/08
Filed: 1991-04-12
Abstract: WATERBED MATTRESS HAVING IMPROVED    ANCHORING OF FLOATING INSERTS  Abstract of the Disclosure According to the present invention, an improved method of anchoring floating waterbed mattress inserts is provided. A vinyl tether is provided which is secured at one end thereof to the floating insert. The other end of the tether is welded to a section of fibre mat which in turn is welded to the bottom of the mattress.
Patent CA-2042149-A1 (CA)
Title: Copolycarbonate resin
Inventor: FOX DANIEL W
IPC: C08G64/00
Filed: 1991-05-09
Abstract: COPOLYCARBONATE RESIN ABSTRACT OF THE DISCLOSURE     A copolycarbonate resin is derived from bisphenol-A, l-phenyl-1,1-bis(4-hydroxyphenyl)ethane and a carbonate precursor. Thick films of the copolymers can be readily cast from methylene chloride solutions without haze formation.
Patent CA-2044727-A1 (CA)
IPC: B01D53/22
Filed: 1991-06-17
Abstract: HYBRID PREPURIFIER FOR CRYOGENIC AIR SEPARATION PLANTS                 Abstract of the Disclosure Feed air to a prepurifier adsorption system/cryogenic air separation system for dry, high purity nitrogen and/or oxygen production is dried in a membrane dryer preferably characterized by a countercurrent flow path.  Drying is enhanced by the use of purge gas on the permeate side of the membrane dryer, with adsorption system or cryogenic air separation system product or waste gas, dried feed air or ambient air being used as purge gas. Two membrane materials are employed in the membrane dryer, in a single stage or in two stages, for enhanced removal of water and carbon dioxide from the feed air.     D-16,348
Patent CA-2045497-A1 (CA)
Title: Method in the manufacture of cellulose pulp
Inventor: SAMUELSON HANS O
IPC: D21C9/10
Filed: 1990-01-16
Abstract: The present invention solves the problem of delignifying technical cellulose pulp in a selective manner which will result in very low residual contents of lignin in the pulp and a correspondingly high quantity of lignin dissolved in spent liquors, which are recovered in the chemical recovery system of the pulp mill. The invention constitutes a method and comprises activating liquid-containing lignocellulosic material in the presence of nitrate with a gas that contains nitrogen dioxide, followed by the alkaline delignification of the lignocellulosic material, and measuring the acidity of the liquid accompanying the material on at least one occasion during the activation. The method is characterized in that the acidity of the liquid is measured subsequent to bringing the time derivative of the nitrate concentration of the liquid, expressed as millimols per litre of liquid per minute, to a level beneath +0.2, and by using the measured acidity value to establish the optimum amount of mineral acid for continuation and termination of the activation, and by charging the whole of this quantity or a part of this quantity of mineral acid to the lignocellulosic material.
Patent CA-2047218-A1 (CA)
Title: Process for producing organized powders by spraying from at least two sets of particles, and organized powders thus obtained
Inventor: MEYBECK ALAIN
IPC: C08L1/00
Filed: 1990-08-03
Abstract: Process  for producing organized powders by spraying from at  least two sets of particles, and organized powders thus obtained.     Invention:  Alain MEYBECK             Philippe ANTOINE     L V M H  RECHERCHE     ABSTRACT OF THE DISCLOSURE           The   invention  relates  to  a  process  for   producing organized powders.          This  process for producing organized  powders,  obtained from particles of different sizes belonging to at least two sets of particles    of   substantially   homogeneous sizes,   comprising respectively  at  least one set of core particles and at least  one set  of  satellite particles, is characterized in that, in a  first step, a substantially homogeneous dispersion of each set is made in a  dispersing  liquid;  and, in a second step, said  dispersion  is sprayed  in  suitable  conditions  to cause the  formation  of  the organized powder.          This  process  makes  it  possible  to  obtain  organized powders  which are characterized by a very unifor covering oof  the core particles whatever their shape, in large quantities and at low costs.
Patent CA-2048297-A1 (CA)
Inventor: TOMKO REVATHI
IPC: C04B41/48
Filed: 1991-08-01
Abstract: Low VOC penetrating compositions for staining and protecting porous substrates such as wood, concrete, cement, brick and the like, comprising aqueous dispersions of polyurethane-ureas.
Patent CA-2051046-A1 (CA)
Title: Bleaching composition
Inventor: NUNN CHARLES C
IPC: C11D17/04
Filed: 1991-09-10
Abstract: ABSTRACT     A bleaching composition in concentrated form is provided that includes a peroxygen compound and an organic bleach precursor. The precursor is selected from esters and carbonates having a leaving group whose conjugate acid has a pKa of greater than 13. Particularly preferred are quaternary ammonium functionalized compounds.  Absent preconcentration of the components, poor bleaching would result.  Concentrated compositions may be achieved through use of encapsulation or by way of a sachet.
Patent CA-2051197-A1 (CA)
Title: System for resetting a postage meter
Inventor: KIM HYUNG-KUN P
IPC: G07B17/00
Filed: 1991-09-11
Abstract: A system for automatically remotely recharging a postage meter.  The system includes an integrated circuit microcontroller which establishes communication with existing electronic postage meters to obtain information necessary for automatic recharging using existing remote data processing system for the automatic recharging of postage meters, compiles that information with other information already contained within the system to form a message, transmits that message to the remote data processing system and receives in response a recharging code.  The system then transmits the recharging code to the electronic postage meter which in turns test the code and, if the code is found valid, increments the meter descending register to effect the recharge.  In one embodiment the system includes a communications unit and a base unit where the base unit is permanently connected to the meter and the communications unit may be separated from the base unit. This embodiments allows one communications unit to be used to recharge a number of meters and also allows the communications unit to be physically transported to a remote telephone line.
Patent CA-2056079-A1 (CA)
Inventor: IKENAGA YOSHIHIRO
IPC: F02B3/06
Filed: 1991-11-18
Abstract: An apparatus for removing SO2 and/or NO x from an exhaust gas formed by the combustion of oil is provided herein. The apparatus includes a conduit for discharging the exhaust gas to the open air, and a screen portion fitted to the conduit across the conduit. The screen portion accommodates an activated carbon which comprises both carbon microcrystals which are irregularly arranged and difficultly-graphitizable carbon which includes crosslinking lattices in the gaps among carbon microcrystals. The activated carbon has a pencil hardness of from B to 6B, a pore size of 100-400 .ANG., a specific surface area of 150-500 m2/g, and a pore volume of 1.3-5.0 ml/g. A first end of the screen portion is open to the outside, and has a means for feeding new activated carbon thereinto. A second end of the screen portion is also open to the outside, and includes a means for discharging used activated carbon therefrom near the second end opening. Means are provided for controlling the feeding of the new activated carbon and the discharging of the used activated carbon by detecting the amount of the discharged used activated carbon.
Patent CA-2056579-A1 (CA)
Title: Electret filters
Inventor: MATSUURA SATOSHI
IPC: B01D39/16
Filed: 1991-11-28
Abstract: ABSRACT      An electret filter made of a resin whose angle of contact upon wetting with pure water is no smaller than 95 degrees, as well as an electret filter made of a resin whose angle of contact upon wetting with pure water has been adjusted to no smaller than 95 degrees by addition of silicone oil.  Those electret filters have high trapping efficiency and their ability to trap particulates, especially cigarette smoke, will not deteriorate even if they are continuously used.  Therefore, they can advantageously be used as filter media in many applications such as home and industrial air conditioners, air cleaners, fan heaters, vacuum cleaners, and air conditioning systems for common equipment.
Patent CA-2056843-A1 (CA)
Inventor: SHIGEKAWA BRIAN L
IPC: G01N33/547
Filed: 1991-12-03
Abstract: LIGAND GOLD BONDING     ABSTRACT OF THE DISCLOSURE     Gold sol coated with alkanethiols and alkanethiol derivatives, which provide groups on the sol available for the linking of binding moieties such as antibodies, antigens or ligands to the gold sol.  Di- and tri-thiol compounds bound to gold sol also facilitate the adsorption of antibodies, antigens or ligands to the sol.  The coating process, and test kits incorporating the coated sols are also included.