baber/WOPTO huggingface dataset:
Patent CA-2048333-A1 (CA)
Inventor: BARNES HAROLD K
IPC: D04H1/46
Filed: 1991-08-01
Abstract: A hydraulically needled nonwoven pulp fiber web is disclosed. This nonwoven pulp fiber web has a mean flow pore size ranging from about 18 to about 100 microns, and a Frazier porosity of at least about 100 cfm/ft2. The web may also be characterized by a specific volume ranging from about 8 to about 15 cm3/g. The nonwoven pulp fiber web may contain a significant proportion of low-average fiber length pulp and still have a total absorptive capacity greater than about 500 percent and a wicking rate greater than about 2 centimeters per 15 seconds.      The hydraulically needled nonwoven pulp fiber web may be used as a hand towel, wipe, or as a fluid distribution material in an absorbent personal care product. Also disclosed is a method of making the hydraulically needled nonwoven pulp fiber web.
Patent CA-2049332-A1 (CA)
Title: Active sound and/or vibration control
Inventor: EATWELL GRAHAM P
IPC: G05B13/02
Filed: 1990-04-20
Abstract: An active sound or vibration control system for compensating noise or vibration arising from a periodic source of changing periodicity, wherein sensors (6) sense the existing noise and vibration, the sensor signals are sampled several times per cycle by an ADC (8) triggered by a signal output from a sensor (3) detecting the position of the source in its cycle, the sampled signals are transformed into compensation actuator drive signal values by a series of transform and adaptation modules (11 to 13, 15) based on algorithms dependent on the frequency of the source, and the drive signal values are stored in a memory means (1) continually updated by the values derived from the sampled sensor signals.
Patent CA-2049959-A1 (CA)
Title: Initiators for polymerization
Inventor: NYANDER JOHAN
IPC: C07D333/14
Filed: 1990-03-20
Abstract: Use of compounds as initiators for cationic polymerization by means of thermal activation or photochemical activation (UV-irradiation) or activation by electron bombardment (EB) is described. The polymerization-initiator consists of a heterocyclic, arylsubstituted or with aryl-ring fused sulfonium salt in combination with a non-nucleophilic anion. During the activation of the initiator, a carbon-sulfur bond is broken via a ring-opening reaction leading to formation of a sulfide and a carbocation (carbenium ion) within the same molecule. The carbocation initiates the polymerization. Since the activation does not lead to fragmentation of the initiator-molecule into smaller molecules, no molecular sulfur-containing decomposition products form that otherwise would evaporate or migrate from the polymer causing bad smell. Some compounds described are also novel compounds per se. The polymerization initiator according to the present invention has one of structural formulae (I) or (II).
Patent CA-2051053-A1 (CA)
Title: High resolution parts handling system
Inventor: DEAN ARTHUR L
IPC: G01B11/26
Filed: 1991-09-10
Abstract: Abstract of the Disclosure A high resolution article handling system serves as an article discriminator or identifier by creating an object silhouette.  The objects are singulated on a conveyor and scanned by a linear array of CCD units (2048 pixels per inch) at a scan rate of 10 MHz.  Pixel transitions corresponding to object edge points are converted to a single count value from a counter which is synchronized with the scanner.  A microprocessor with a first in, first out buffer memory needs only a capacity to handle the count value rather than all data from the pixels.  Article orientation is corrected in response to signal generated by determining the count value difference between a reference value and a work article value at only the scan slice windows at equally spaced positions along the article length where differences have been predetermined to be a maximum.
Patent CA-2052119-A1 (CA)
IPC: A01B15/02
Filed: 1991-09-24
Abstract: A mounting frame for a moldboard of a motor grader is provided with first and second retainers having V-shaped notches that cooperate with V-shaped engagement portion located on the mounting rails of the moldboard.  Each of the V-shaped notches are provided with first and second wear strips defining the wings of the V-shaped notch. The wear strips have a sliding surface in sliding contact with the mounting rails and a contact surface which contacts the adjoining wear strip in the V-shaped notch. Locating protuberances are located at each end of the wear strips and cooperate with retainer clips to hold the wear strips in proper position.  The ends of the wear strips are also provided with abutment surfaces which contact the base of the retainer clips.
Patent CA-2053379-A1 (CA)
Inventor: TRAISE JOHN E
IPC: B43M5/04
Filed: 1991-10-11
Abstract: ABSTRACT      A pressure sealer for sealing pressure sensitive adhesive strips on business forms or the like is simple and straight forward, for use primarily in manual operations.  First and second driven rollers convey business forms during sealing, and are driven by a single motor driven gear meshing with Delrin* gears integral with the rollers.  Pressure applying rollers are mounted above and in alignment with first and second rollers, and are biased by an adjustable spring mechanism to provide the necessary pressure to effect sealing.  The spring force applying mechanism can also be disabled so that no force is applied to allow ready inspection and/or replacement of the components, by utilizing a particular procedure including replacing one bolt with a longer thinner bolt.  Pinching of the operator's fingers is prevented by a flap disposed in association with a lead-in platform for the forms, just prior to the rollers.  The second roller in the direction of form conveyance may a slightly larger diameter than the first roller to effect pull-up of a document feeding from the first roller to the second roller.            *Trade-mark
Patent CA-2054960-A1 (CA)
Title: Forward control tube with sequenced ignition
Inventor: WARREN JOHN B
IPC: F42B5/045
Filed: 1991-11-05
Abstract: A cased telescoped ammunition with a perforated forward control tube in which the main propellant gas and flame front ignites a propellant surrounding the tube through the perforations. Seals form annular segments of consolidated propellant surrounding the tube separated from each other and the main propellant charge. these seals prevent gas and flame front propagation from the main or rearmost charge of propellant, except through the control tube perforations or ports which have beers passed by the obturator.
Patent CA-2055047-A1 (CA)
Title: Hdtv encoder with forward estimation and constant rate motion vectors
Inventor: KNAUER SCOTT C
IPC: H04N19/94
Filed: 1991-11-06
Abstract: HDTV ENCODER WITH FORWARD ESTIMATION AND       CONSTANT RATE MOTION VECTORS Abstract A motion compensated encoder where motion vectors are selected based on the prediction error generated in localized areas of the encoded image and based on an available bit budget. The motion vectors are created by dividing the imageinto blocks of two sizes and by considering the best mix of large and small sizeblocks, and their associated motion vectors, that minimize the overall prediction error, within the constraints of the bit budget. For convenience, the image division is arranged so that a given number of small sized blocks forms one large sized block (e.g. 16:1). Also, the block sizes are arranged so that employing only large sized blocks does not exceed the given bit budget, while employing only the small sized blocks does exceed the given bit budget.
Patent CA-2055950-A1 (CA)
Title: Pyridyl derivatives, pharmaceutical compositions containing these compounds and processes for preparing them
Inventor: SOYKA RAINER
IPC: A61K31/4418
Filed: 1991-11-21
Abstract: Abstract Pyridyl Derivatives This invention relates to new pyridyl derivatives of formula I     ( I)   (wherein R1 to R6, A, X and n are defined as in claim 1) the isomers and addition salts thereof, which have valuable pharmacological properties, particularly antithrombotic activity and thromboxane-mediated activities.  The new compounds have an effect on PGE2-production and are also simultaneously thromboxane antagonists (TRA) and thromboxane synthesis inhibitors (TSH).
Patent CA-2056011-A1 (CA)
Title: High speed rock bit
Inventor: DENTON ROBERT
IPC: E21B10/25
Filed: 1991-11-22
Abstract: HIGH SPEED ROCK BIT            Abstract of the Disclosure A rock bit for drilling subterranean formations has improved dynamic O-ring seals for retaining lubricant around the rock bit bearings during operation at more than 50 meters per minute surface speed on the O-rings.  Such a bit has a plurality of journal pins,  each having a bearing surface, and a cutter cone mounted on each journal pin  and  including  a  bearing  surface.    A  pressure-compensated grease reservoir is in communication with such bearing surfaces for maintaining a grease adjacent to the bearing surfaces.  The grease is sealed in with dynamic O-ring seals comprising a perfluorinated terpolymer of tetrafluoroethylene, perfluoro(methyl vinyl ether) and a cure site monomer for introducing crosslinking sites. Preferably the cure site monomer is selected from the group consisting of trifluoroethylene, vinyl perfluoro-alkyls  and monomers  including a perfluoroalkyl  ether group.
Patent CA-2057151-A1 (CA)
Title: Material level sensor with removable optics
Inventor: SECORD JOHN R
IPC: G01F23/292
Filed: 1991-12-05
Abstract: Abstract of the Disclosure A system for sensing the presence of or level of material within a vessel that includes a light transmitting probe extending into the vessel through a wall of the vessel from externally thereof. The probe has a lens with a closed end within the vessel for contact with the material sought to be detected, and a light source/sensor unit positioned externally of the vessel.   The light source/sensor unit directs light energy through the lens of the probe to the closed end of the lens, which is within the vessel.  The source/sensor unit detects the presence of material in contact with the closed end of the lens as a function of light energy reflected back to the source/sensor unit.  The light source/sensor unit is removably mounted on the lens so that the source/sensor unit may be removed from the lens for service without removing the lens itself from the vessel wall.
Patent CA-2057927-A1 (CA)
Title: Steam and fuel oil supply and purge valve with cooling steam feature
Inventor: BUCHANAN BASCOM F
IPC: F23K5/18
Filed: 1991-03-04
Abstract: A steam and fuel oil supply and purge valve has a steam valve (42) and actuator member (48) which provides for a closed position, a purge operation with communication established between a steam supply line (26) and a discharge line (28) leading to an oil burner, a burner operation position wherein the actuator portion of the member engages and opens an oil supply valve member (82) and thus establishes communication between an oil supply line (92) and an oil discharge line (40) io the burner. Oil recirculation is also provided together with a "cooling" steam feature. The latter is provided by the steam valve and actuator at an additional position where a metered flow (79) of "cooling" steam is provided for inoperative burner tips when other burners remain in operation.
Patent CA-2058075-A1 (CA)
Inventor: YAMAKAWA AKIRA
IPC: C04B35/581
Filed: 1991-12-19
Abstract: This invention provides composite ceramic powder comprising matrix ceramic powder and fine particles of ceramic, metal or metal compound which are different from the matrix ceramic powder and dispersed in the matrix ceramic powder. The composite  ceramic powder is produced by mixing matrix ceramic powder or its precursor with fine particles to be dispersed therein and then heating the resulting mixture. The composite ceramic powder is also produced by dispersing matrix ceramic particles or precursor thereof in an organic solvent with an organic compound as a dispersoid particle precursor and separating and recovering the organic solvent.  The composite ceramic powder is suitable for producing sintered bodies having excellent properties, especially with respect to thermal conductivity, flexural strength and light transmittance, by a conventional ceramic fabrication process.
Patent CA-2061890-A1 (CA)
Inventor: ROUNDS JERRY L
IPC: B25B23/10
Filed: 1992-02-26
Abstract: ABSTRACT OF THE DISCLOSURE An automatic stud driving tool having greater concen-tricity and reduced run-out includes a cylindrical hollow body; a carriage disposed within the body including jaws for selectively gripping a stud; a driven head rotatable within the body and selectively engageable with the car-riage;  a snap ring assembly;  and an annular retaining groove located on the inside of the hollow body.   The driven head, located partially within the hollow body, is retained within the body by inserting the snap ring assem-bly into the retaining groove.
Patent CA-2062800-A1 (CA)
Inventor: CORNAY PAUL J
IPC: F16D3/42
Filed: 1990-06-28
Abstract: A universal joint (310) includes a substantially hemispherical cup-shaped ~oke (311) in which is disposed a cross trunnion (312) and which is disposed in a ring (315). Pins (321, 322) connect the ring to t~~ cross trunnion and to the yoke. Lubricant in an annular channel (319) in the ring provides lubrication for the pins (321, 322), whose ends disposed in the ring (315) are surrounded by needle bearings (31). A first shaft (340) is integrally connected to the cross trunnion (312), and a second shaft (513) is integrally connected to the yoke (311). By joining the yokes (311) of two such joints (310) with a common shaft (313), a composite joint (300) can be formed.
Patent CA-2063134-A1 (CA)
Title: Method for regulating the temperature of a medium by means of a temperature control loop, and a temperature-regulating device for implementing the method
Inventor: BENDTSEN CHRISTIAN
IPC: F24F11/02
Filed: 1992-03-16
Abstract: A method for regulating the temperature of a medium and a temperature-regulating device for implementing that method makes use of a temperature control loop which comprises a coolant circuit with a compressor arrangement (1), makes use of or contains a temperature detector (7) for generating a measuring signal representing the temperature actual value, a comparator (10) for comparing the measuring signal with the upper and lower limit (To, Tu) of a neutral zone extending on both sides of a temperature desired value, and a switch mechanism (9) by which an output stage of the compressor arrangement (1) is switched on or off by way of two time-delay elements (11, 12) when the measuring signal exceeds or falls below the neutral zone.   One of the time-delay elements (11) is actuated when the change in the measuring signal alters from falling to rising.   The other time-delay element (12) is actuated when the change in the measuring signal alters from rising to falling.   If the measuring signal exceeds the upper limit (To) beyond the running time of the one time-delay element (11), an output stage of the compressor arrangement is switched on, and if the measuring signal falls below the lower limit (Tu) beyond the running time of the other time-delay element (12), a compressor output stage is switched off.   In this manner, severe overswings are avoided and a stable control within narrow limits is achieved.
Patent CA-2063777-A1 (CA)
IPC: C05F9/02
Filed: 1992-03-23
Abstract: In a process of treating waste materials  for an anaerobic digestion of the biogenic organic constituents of the garbage, particularly of the source separated organic waste, the non-recycable fraction of the domestic waste, the residual waste and the commercial wastes, an easily dewaterable suspension of the biogenic organic substances is formed in a pretreating stage by a mechanical treatment including a selective dissolution and defibration of the biogenic organic substances. In dependence on the adjusted solids concentration the action of flow-dynamical forces  is  so  controlled  that  the  not  biogenic  organic substances, are not subjected to an appreciable disintegration before they are removed at the end of the pretreatment. Non-digestable substances are removed. The suspension is converted to biogas by an anaerobic digestion and to a compost-like residue. In the apparatus in accordance with the invention a gentle treatment of adhering solids in the crude waste is ensured in the pretreating stage in that the speed of the impeller 14 in the pulping vessel 13 is controlled in dependence on the solids concentration. This will also result in a distinct saving of energy and in a high efficiency.
Patent CA-2064760-A1 (CA)
Title: Coin testing device
Inventor: MEEKS ALAN M G
IPC: G07D5/00
Filed: 1990-07-03
Abstract: A coin testing device comprising two parts (2, 4) which in an operating, closed, condition of the device define between them a narrow space (6) in which coins travel edgewise, and one or more coin sensor elements (12, 12', 14, 14', 16, 16') mounted on at least one of the parts, the two parts being capable of relative movement apart from each other for access to the space between them, characterised in that the two parts are provided with location-defining  features (20, 20', 22, 22', 24, 24') at three positions which are spaced apart to form a triangle, that when the two parts are being brought together from their apart position they are sufficiently displaceable relative to each other to be able to adopt final closed positions determined only by contact between the location-defining features, and that means (28, 56) is provided for urging the parts towards each other at a position within said triangle. Accurate location of the two parts relative to each other is achieved despite manufacturing tolerances.
Patent CA-2065778-A1 (CA)
Inventor: VERMA SURENDRA K
IPC: C08L71/02
Filed: 1992-04-10
Abstract: CERAMIC COMPOSITIONS AND PROCESSES             FOR THE MANUFACTURE AND USE THEREOF      Abstract This invention relates to ceramic compositions comprising a ceramic material such as alumina, clay, a dispersant and one or more block polymers characterized by an ABCBA structure as a binder, and to ceramics produced therefrom.  This invention also relates to processes for the production of ceramic compositions and for the manufacture of ceramics.  By using one or more block polymers characterized by an ABCBA structure as a binder, polymers of relatively high molecular weight can be used, thereby giving good green strength in the greenware, while still keeping the slurry viscosity relatively low.  The ceramic compositions exhibit good green density, good mold release and gentle burnout character.
Patent CA-2066754-A1 (CA)
Title: Apparatus for making plastic tubing including mold blocks hingably openable and closeable
Inventor: LUPKE MANFRED A A
IPC: B29C33/36
Filed: 1990-10-29
Abstract: The invention concerns apparatus for molding tube (20) utilizing a travelling mold tunnel. The tunnel is made up of mold blocks (16) each comprising parts (13, 15) which are hinged together to be closeable to form the tunnel and openable to release tube from the tunnel. The opened mold blocks (16) from the downstream end of the tunnel are opened and returned to the up-stream end without change in their orientation to reform the tunnel about an extrusion nozzle (18) for thermoplastic extrudate.
Patent CA-2067798-A1 (CA)
Title: Hydrophilic pressure sensitive adhesive for topical administration of hydrophobic drugs
Inventor: HOLMBLAD CAROLANN M
IPC: A61L15/44
Filed: 1991-06-11
Abstract: Novel hydrogel formulations useful as adhesive reservoirs for topical or transdermal drugs employ as the polymer base a crosslinked polymer or copolymer of 2-acrylamido-2-methylpropane sulfonic acid or a salt thereof. The gels are prepared from polymerizable compositions comprising: 20 % - 50 % of a monofunctional monomer component, at least 75 % of said component comprising 2-acrylamido-2-methylpropane sulfonic acid or a salt thereof, the balance being selected from the group consisting of acrylic acid, water soluble acrylic functional monomers and vinyl pyrrolidone; 30 % - 50 % of a glycol component selected from the group consisting of compounds of the formula: HO-(C2H4O)n-H, HO-(C3H6O)m-H  and mixtures thereof, where n is in the range of about 4 to about 16 and m is 1-4; between about 0.02 % and about 0.20 % of a crosslinking monomer; an amount of a free radical polymerization initiator effective for initiating polymerization of said monofunctional monomer and crosslinking monomer components; and a therapeutically effective amount of a topically or transdermally deliverable drug, at least about 60 % of said drug being dissolved in the formulation.
Patent CA-2067869-A1 (CA)
Inventor: PARHAM ROBERT L
IPC: B02C15/04
Filed: 1992-05-01
Abstract: A substantially one-piece cast plunger can structure and a mated spring compressor system.  The plunger can includes a removable plunger bearing on one end that is attached to the plunger can with both interlocking lugs and bolts and is designed for removal with a spring compressor that holds it in place.
Patent CA-2068958-A1 (CA)
Title: Feeding device
Inventor: AHO MIKKO
IPC: B25H1/00
Filed: 1992-05-19
Abstract: Abstract A feeding device for installation work, such as dril-ling  or  equivalent,  the  feeding  device  having  a tubular body (2) and a feed rod (3) within it, mov-able in the longitudinal direction of said body (2). The feed rod (3) includes a chain (3b) recessed in-wardly from its outer surface,  being fixed at its ends immovably to the feed rod (3). A sprocket wheel (5a) extending to the chain (3b) is fixed to the body (2),  and  a  feed  lever  (6)  provided  with  a  pawl mechanism  is  connected  to  the  arm  (5b)  of  the sprocket wheel (5a).            (Figure 1)
Patent CA-2069110-A1 (CA)
Title: Aerodynamic probe internal constructions
Inventor: HEDBERG ERIC A
IPC: G01L19/00
Filed: 1990-11-08
Abstract: ABSTRACT OF THE DISCLOSURE         A short, strut-mounted, multifunction air data sensing probe (20) providing reduced drag, weight and radial cross section has a modular internal construction providing a multiple passageway pressure assembly (35) to transfer sensed pressure signals from individual sensing ports  (25,31,32)  on a probe barrel  (21)  to pressure carrying conduits (57,62,66,73,74) extending into the mounting strut (30) of the probe (20).  The modular construction eliminates the need for having interior chambers made by fixing a series of difficult to locate bulkheads on the probe interior, with separate lines running from each of the chambers to provide the pressure signal from each of the ports.  The modular construction also permits mounting a deicing heater (95) on internal parts other than the outer probe shell so that the manufacture of the probe  (20)  is  further simplified, and the types of material used for the probe shell (21) can be changed without concern about heater mounting.
Patent CA-2071078-A1 (CA)
Title: Thermoplastic photodegradable and biodegradable polymer blend
Inventor: FOSTER TERRY
IPC: C08L9/00
Filed: 1992-06-11
Abstract: ABSTRACT         A photodegradable and fully biodegradable plastic material, which can be molded using conventional molding techniques, and which has relatively good properties includes a blend of polyisoprene and polycaprolactone resins.  The material biodegrades in soil and sea water environments.  All blend ingredients are completely decomposed by microorganisms.         Polyisoprene is a natural polymer present in a large variety of plant species.  Polycaprolactone is a synthetic polymer resin known to be decomposed by microorganisms.  The plastic material has thermoplastic properties which permits processing of the material using conventional plastic-working techniques.