baber/WOPTO huggingface dataset:
Patent CA-1093980-A (CA)
Inventor: WHEATON BRUCE M
IPC: B01D46/00
Filed: 1978-04-25
Granted: 1981-01-20
Abstract: Abstract A cleaning system for sleeve-type air filters featur-ing top removal of sleeves of the filtering media and increased filtering capicity, using sharply pulsed back-flushing air of short duration from a single source for cleaning the sleeves which requires substantially less power and simpler mechanical structure than conventional filters of similar capacity   Filter sleeves depend from clean air outlet ports which are arrayed in concentric rings in a porting plate in closely-spaced relation one from the next at uniform circular and radial pitches allowing more sleeves to be packed in the porting plate which separates the clean air section from the dusty air section of said filter and more capacity from the same size filter than was herotofore possible.   A tank is reptitively charged with air to a set pressure by a pump and the pressurized air is released by a pulse generating valve for distribution of the air to said sleeves for backflushing at essentially random frequency.  Each sleeve in the filter receives, on the average, one pulse of cleaning air every 2 to 5 minutes.
Patent CA-1075422-A (CA)
Inventor: LYTTON KENNETH G
IPC: D01G23/00
Filed: 1978-05-31
Granted: 1980-04-15
Abstract: ABSTRACT OF THE DISCLOSURE           A system and apparatus for forming webs from textile fibers entrained in an air stream in a conduit with a perforated plate dividing the interior of a housing into first and second chambers so that the entrained fibers fall to the bottom of the first chamber and the air passes through the plate while a portion of the plate is oscillated.  The passage between the conduit and first chamber increases in cross-section from conduit to first chamber to reduce the velocity of the air and entrained particles.
Patent CA-1099842-A (CA)
Title: Procede de fabrication de copolymeres greffes par polymerisation-greffage en emulsion-suspension
Inventor: DELSARTE JACQUES
IPC: C08F279/02
Filed: 1978-07-11
Granted: 1981-04-21
Abstract: : Procédé de fabrication de copolymères greffés par polymérisation d'un mélange de monomères, composé d'au moins un dérivé vinylaromatique et d'au moins un dérivé acrylique ou méthacrylique, sur un élastomère contenant des liaison éthyléniques.  Dans une première étape, on polymérise en émulsion aqueuse le mélange de monomères en présence de l'élastomère sous forme de latex monodimensionnel jusqu'à ce que le rapport             soit supérieur à 30 %, "x" étant le taux de conversion des monomères introduits exprimé en pour cent de la quantité totale "a" exprimée en parties en poids desdits monomères et "b" étant la quantité d'élastomère exprimée en parties en poids de matières sèches; après un nouvel ajout de latex monodimensionnel complémentaire, on achève la réaction dans une deuxième étape par polymérisation en suspension.  Le procédé selon l'invention permet de fabriquer un produit d'une excellente qualité tant en propriétés mécaniques qu'en aspect de surface.  Il réduit l'agglomération du latex greffé en émulsion au moment de la mise en suspension, ce qui procure la brillance du produit final et permet gr?ce à la nouvelle introduction de latex en fin d'émulsion d'assurer le grossissement d'un nombre suffisant de particules pour assurer de bonnes propriétés mécaniques au produit final, la cohésion de l'ensemble étant assurée par la polymérisation-gref-fage en suspension du reste des monomères.
Patent CA-1113155-A (CA)
Inventor: BIETHAN GUNTER
IPC: H04B1/40
Filed: 1978-09-20
Granted: 1981-11-24
Abstract: ABSTRACT OF THE INVENTION                  DUPLEX MICROWAVE RADIO SYSTEM        The invention concerns a duplex microwave  radio system which serves to transmit analogue or digital data between mobile transmitting-receiving stations which move along given paths and fixed transmitting-receiving relay stations which are arranged at given intervals along these paths and operate in both directions of the path.          The relay stations on a path are connected to a main, central transmitting-receiving station.  Such systems are of use in, for example, railway systems.  The invention provides that each mobile and/or relay station comprises a transmitting section including a microwave oscillator (3), frequency stabilisation and modulation means (4), and a receiving section including a microwave frequency-conversion mixer (5), an amplifier (6) and a demodulator, the output of the transmitting section and the input of the receiving section being connected to first and second arms of a circulator (7) having a third arm lying between the first two, the third arm being connected via a 3-dB coupler (8) to a pair of antennae means (9,10) whose radiation directions are offset by 180°, the arrangement being such that, in use, a signal from the microwave oscillator (3) passes, attenuated from the first to the second arm of the circulator (7) to provide a local oscillator signal for the mixer (5).             (Figure 1)
Patent CA-1106402-A (CA)
Inventor: BREDEWEG ROBERT A
IPC: C07C53/48
Filed: 1978-09-25
Granted: 1981-08-04
Abstract: ABSTRACT OF THE DISCLOSURE             A process for removing bis-chloromethyl ether and l,1,1,2-tetrachloroethane from a mixture comprising these two materials and chloroacetyl chloride by contacting the mixture with a catalytic amount of ferric and/or aluminum cations at a temperature from 50°C to 140°C and a residence time of from 15 to 120 minutes.  This process can remove bis-chloromethyl ether to a concentration of less than 0.5 ppm and 1,1,1,2-tetrachloroethane to a concentration of 0.05 weight percent, both based on the chloroacetyl chloride.     18,465-F
Patent CA-1131116-A (CA)
Title: Method of indicating the presence of an impregnant  in a substrate
Inventor: FENN DAVID J
IPC: D06P5/00
Filed: 1978-09-26
Granted: 1982-09-07
Abstract: ABSTRACT OF THE DISCLOSURE    The invention is a method of indicating the presence of an impregnant, e g. an antimicrobial composition, in cloth to provide visual evidence of the continuing activity of the impregnant.  The antimicrobial composition in the cloth is activated on contact with a liquid such as water and is ionically bonded to the cloth   Small portions of the impregnated cloth are dyed with an indicator dye which bonds preferentially to the antimicrobial composition so that when the antimicrobial composition is exhausted, the dye will disappear from the cloth.  The dye is preferably applied to the cloth in stripes.
Patent CA-1103634-A (CA)
Inventor: SCHUELER ARTHUR P
IPC: E01F9/619
Filed: 1978-10-04
Granted: 1981-06-23
Abstract: ABSTRACT        An improved roadside marker system wherein each individual reflector means is longitudinally spaced from others thereof and is continuously visible by the driver of a vehicle moving along the road at night-time from viewing angle of 0 to 60° where 0° extends substantially parallel to a tangent to the road side portion in the region where each respective one of the reflector means is located. The driver continuously sees retroreflected light at any given instant of time while approaching and passing a group of the reflector means so employed and so located. Also, an improved roadside reflector assembly useful in such system which when mounted alongside a road is continuously visible by retroreflected light by the driver of a vehicle moving along the road at night-time within a viewing angle of from about 0 to 60° relative thereto, where 0° extends substantially parallelly to a tangent to the road in the region where such reflector assembly is located.
Patent CA-1113407-A (CA)
Inventor: OKAMURA YASUSHI
IPC: G11B21/12
Filed: 1977-10-19
Granted: 1981-12-01
Abstract: ABSTRACT OF THE DISCLOSURE         A stationary record player having a turn table and a pickup pivotally secured to the turn table, so as to trace, when rotated together with the turn table, the recording groove of a stationary record medium on which the record player as a whole is placed.  The record player has various novel functions such as an automatic stopping function for automatically stopping the player when the play is finished with the record medium, an automatic returning function for automatically resetting the stylus to the starting position, a lift-stop function for automatically stopping the player when the latter is lifted up from the record medium a slide-stop function for automatically stopping the player when the latter is dis-placed laterally from the correct mounting position on the record medium, a pause state eliminating function for stopping the player when the latter in the pause state is lifted up from the record disc, and so forth.  These functions are effective to prevent the unnecessary wear of the stylus and to protect the latter from any damaging external force.  Further, the force required for turning the player into operation is derived from a motor for driving the turn table, so as to obtain an improved ope-rability of the player.  The playing performance of the player is further improved by an additional provision of an end repeat and optional repeat functions by means of which the playing is performed repeatingly over the full or a desired part of the record medium.
Patent CA-1106059-A (CA)
Inventor: LOPEZ ALFRED R
IPC: H01Q3/38
Filed: 1978-12-05
Granted: 1981-07-28
Abstract: PHASED ARRAY ANTENNA WITH REDUCED     PHASE QUANTIZATION ERROR          ABSTRACT OF THE DISCLOSURE               Phase quantization errors in a phased array antenna are reduced by providing phase control signals which approximate ideal phase functions for symmetrical pairs of elements having an average phase value which is dis-placed from a nominal phase quantiza-tion value by one-quarter the smallest phase step.
Patent CA-1089332-A (CA)
Inventor: COX BRUCE M
IPC: F15B3/00
Filed: 1979-01-08
Granted: 1980-11-11
Abstract: ABSTRACT OF THE DISCLOSURE         An improved differential pressure hydraulic pressure convertor whose ratio of output pressure to input pressure may be easily varied comprising a valve housing, a pump housing having a cylindrical bore therethrough, a power cylinder in-cluding a differential piston located between the valve hous-ing and the pump housing, a piston assembly detachably secured to the differential piston of the power assembly and, option-ally, a sleeve installed in the cylindrical bore in the pump housing slidably receiving the piston of the piston assembly.
Patent CA-1141819-A (CA)
Inventor: STEMMLER HERBERT
IPC: H01F29/04
Filed: 1979-01-29
Granted: 1983-02-22
Abstract: TITLE OF THE INVENTION:     "A VARIABLE PHASE-SHIFTING TRANSFORMER NETWORK"                         ABSTRACT OF THE DISCLOSURE   A variable phase-shifting transformer network including at least one pair of multi-phase transformers, wherein the network transformation ratio and phase shift is step wise adjustable as a result of the provision of plural auxiliary windings located on the core of a preselected secondary winding,each auxiliary winding having plural taps, which are not initially interconnected.  Each transformer phase includes an AC semiconductor switch connected across selected tappings of the respective auxiliary windings via selected watt-less isolating switches.  The voltage vector appearing across a selected secondary winding is varied by connecting a non-ignited semiconductor switch, via the isolating switches associated therewith, to desired tappings of the respective auxiliary windings while the rectifier is non-current conducting.  Thereupon this AC semiconductor switch is ignited and ignition pulses are removed from the pre-viously conducting semiconductor switch.
Patent CA-1103666-A (CA)
Inventor: WINTER WERNER
IPC: C07D239/557
Filed: 1979-03-06
Granted: 1981-06-23
Abstract: ABSTRACT OF THE DISCLOSURE            New l-oxo-lH-pyrimido[6,1-b]benzthiazole derivatives and their process of preparation of formula (I) are provided -  wherein R1, R2, R3 and R4, which may be the same or different, are selected from the group consisting of hydrogen, halogen, hydroxyl, nitro, trifluoromethyl and straight-chain or branched-chain lower alkyl, alkoxy or alkylthio radicals, or R2 and R3 can together represent an alkylenedioxy radical, and X is a hydroxyl group or lower alkoxy or tetrazolyl-5-amino radical, and the pharmaceutically acceptable, pharmacologically compatible salts thereof, the new derivatives when administered parenterally or perorally display anti-allergic action and are useful for combating allergic diseases, for example, allergic asthma, hay-fever and urticiria; further the new derivatives possess anti-oedematous and anti-inflammatory properties.
Patent CA-1124422-A (CA)
Inventor: KAWAMURA TAKAYUKI
IPC: B32B27/10
Filed: 1979-04-17
Granted: 1982-05-25
Abstract: ABSTRACT         Paper coating compositions having an improved combination of properties are prepared by admixing, in the normal proportions and by conventional techniques, one or more conventional paper coating pigments with a particular type of synthetic polymer latex.  In such compositions, the particular latex employed is alkali-sensitive and is prepared by emulsion polymerizing (A) from 10 to 90 parts by weight of a monomer mixture comprising, based upon the weight of such monomer mixture, (1) from 10 to 60 weight percent of an ethylenically unsaturated carboxylic acid monomer and (2) from 40 to 90 weight percent of a copolymerizable monoolefin compound in the presence of (B) from 10 to 90 parts by weight, on a polymer solids basis, of a copolymer latex comprising a monovinylidene aromatic monomer such as styrene and an open-chain aliphatic conjugated diene such as butadiene.
Patent CA-1093455-A (CA)
Inventor: OLSZEWSKI WALTON J
IPC: F25J3/04
Filed: 1979-05-08
Granted: 1981-01-13
Abstract: CRYOGENIC SYSTEM FOR PRODUCING LOW-PURITY OXYGEN                          ABSTRACT   Low purity oxygen is produced by fractional dis-tillation of liquefied air in a double distillation column ant an auxiliary distillation column.  Feed air is supplied at two different pressures.  The disclosed methods of handling intermediate oxygen-enriched liquid produced by the two columns and removing nitrogen-rich gas from the auxiliary distillation column permit the system to operate with lower energy requirements ant smaller column diameter than conventional systems.
Patent CA-1124637-A (CA)
Inventor: JOHNSON LARRY K
IPC: E06B3/48
Filed: 1979-05-14
Granted: 1982-06-01
Abstract: BIFOLD DOOR HINGE ASSEMBLY          Abstract of the Disclosure There is disclosed a hinge structure for a bifold door assembly or the like, which includes first and second leaf members, the first leaf member comprising a generally flat mounting or leaf portion and a knuckle portion.  The knuckle portion includes one or more and preferably a pair of coaxial spaced, knuckle portions which are of a generally semi-circular or U-shaped configuration in cross section, thus defining generally open knuckles.  The second leaf member in-cludes a generally flat mounting or leaf portion and a knuckle portion comprising a generally cylindrical closed knuckle with a pair of rod-like pins extending coaxially therefrom.  The axial length of the closed knuckle is such that it may be dis-posed between the open knuckles of the first leaf member and the outwardly extending pins received in the open, U-shaped knuckle portions.  Upon assembly, the first leaf member is mounted so that the open knuckle portions are offset with respect to the door edge, with a surface portion of the door serving to cooperate with the open knuckle portions to confine the pin members and prevent lateral separation.
Patent CA-1126694-A (CA)
Inventor: BUSHOW ADOLPH G
IPC: C25D17/00
Filed: 1979-05-22
Granted: 1982-06-29
Abstract: ABSTRACT OF THE DISCLOSURE           A plating method which comprise disposing a linear workpiece in a plating bath with the region to be plated immersed in the bath.  A pair of flat thin input streams of electrolyte is then caused to be directed against both sides of the immersed portion simultaneously at substantially the same rate and the electrolyte is withdrawn downwardly from below the workpiece at a rate not in excess of the input rate.          Finally, an electric current is passed through the workpiece as cathode and through the solution to a pair of anodes dis-posed below the workpiece and on either side of it.  An apparatus for carrying out this method is also disclosed.  With this method and apparatus there is no need to mask the portion which is to be left unplated.
Patent CA-1137271-A (CA)
Inventor: SZNOPEK JOHN L
IPC: F16L21/00
Filed: 1979-05-29
Granted: 1982-12-14
Abstract: Abstract of the Disclosure A coupling comprises a body of fiber glass rein-forced plastic which has a rubber sleeve embedded therein. The rubber sleeve is a one piece unit which includes specially shaped sealing gaskets on either end and has a rubber liner spanning the area between these sealing gaskets.  This rubber sleeve is stretched onto a steel and plastic molding mandrel.  This stretching places the rubber liner under tension which reduces the cross-sectional area of the liner and compensates for thermal expansion of the liner during curing.  The mandrel/sleeve combination is rotated in order to wind a thermosetting resin impregnated fiber glass roving around ?? outer circumference of the mandrel/sleeve combination, thus embedding the sleeve in the fiber glass reinforced resin matrix.  The thermosetting resin is cured at elevated temperatures, hardening into a rigid coupling with the embedded rubber sleeves integral therewith.  There-after the hardened coupling is stripped from the steel and plastic mandrel and subjected to a further curing and finishing operation.
Patent CA-1138970-A (CA)
Inventor: NORTON DAVID J
IPC: B61L19/06
Filed: 1979-05-30
Granted: 1983-01-04
Abstract: ABSTRACT The specification discloses an electronic or computer-based railway control signal interlocking system.  Signals representing the settings or conditions of railway control elements e.g. track circuits, signals and points, and their control signals are checked as usual by the interlock equipment to establish route safety.  However failures in the system may only be discovered when a change to a control element setting is attempted.  Since long periods can elapse between changes a failure may lie dormant for some time. In order to reduce dormant wrong side failure periods to a minimum the signals supplied to the interlocking means are periodically switched to a predetermined state chosen to prove that when the interlocking means receives the switched signal that a wrong side failure mode does not exist in the switched signal path.
Patent CA-1119906-A (CA)
Inventor: ROBINSON EDWIN
IPC: F27B15/10
Filed: 1979-05-31
Granted: 1982-03-16
Abstract: ABSTRACT      A boiler wherein -the combustion unit includes a fluidised bed which may be fluidised in a non-uniform manner to effect circulation of bed material by means of air distributors located within the bed.
Patent CA-1119038-A (CA)
Inventor: LESTRANGE RAYMOND J
IPC: G03C1/76
Filed: 1979-07-20
Granted: 1982-03-02
Abstract: Process for Sensitizing Photographic Silver Halide Emulsions ABSTRACT  A process for sensitizing photographic gelatino-silver halide emulsions with glutaraldehyde bisulfite in combination with benzene sulfinic acid.
Patent CA-1114687-A (CA)
Title: Method of coating liquid penetrable  articles with polymeric dispersions
Inventor: FARNAM ROBERT G
IPC: B05D3/02
Filed: 1979-08-06
Granted: 1981-12-22
Abstract: METHOD OF COATING LIQUID PENETRABLE ARTICLES WITH POLYMERIC DISPERSIONS                  Abstract of the Disclosure A liquid penetrable material such as a compac-tible gasket material is coated with a liquid dispersion of polymer or polymers, by first preheating the liquid penetrable material to a temperature sufficient to prevent any substantial penetration of liquid into the material when the material at the preheated temperature is coated with the liquid dispersion of polymer or polymers.  The preheated material is then coated with the liquid disper-sion of polymer or polymers in an amount sufficient to form a fluid-impermeable barrier over the material and the coated material is supported on a plurality of pointed projections through a drying section until the coating is in a tack-free condition.   After drying the material to a tack-free condi-tion, it is supported on a conveyor through a curing station to cure the coating.  Thereafter the material is delivered by suitable conveyors to an inspection and packaging station, but may be passed en route through another coating station, this time to receive a suitable release coating.
Patent CA-1086343-A (CA)
Title: Strip accumulator
Inventor: WEATHERBY ROBERT G
IPC: B65H20/30
Filed: 1979-08-15
Granted: 1980-09-23
Abstract: ABSTRACT OF THE DISCLOSURE           A strip accumulator includes a frame and means for forming and supporting outer and inner sets of convolutions of strip material. The means forming the outer set of con-volutions includes a flexible band which carries rollers thereon, the band being mounted to the frame in such a manner that as the convolutions of strip build up against the rollers, the band will expand. The means forming the inner set of convolutions includes arcuate plates which carry rollers thereon against which the convolutions of strip are formed.  Means are provided to move the plates toward and away from each other.
Patent CA-1109655-A (CA)
Inventor: ARNOLD LEONARD R
IPC: B23B27/14
Filed: 1979-09-06
Granted: 1981-09-29
Abstract: ABSTRACT OF THE DISCLOSURE         A heavy duty, indexable insert for use in single-point and multiple-point negative rake holding devices, which includes a polygonal body having con-junctive sides providing cutting edges bounding a flat, narrow, downwardly inclined land which drops off sharply into a wide pocket which inclines at a very low angle to the center or axis of the insert and also narrows in width from the corners of a particular edge to center.
Patent CA-1145023-A (CA)
Inventor: STILES JOHN C
IPC: H01S3/083
Filed: 1979-11-01
Granted: 1983-04-19
Abstract: ABSTRACT OF THE INVENTION     A laser supporting member having a reduced bore section for suppressing unwanted TEM modes.  The invention makes use of the fact that the gain available from the ex-cited gas of the laser cavity falls off near the walls of the cavity.  Thus, the diameter of the tube enclosing the excited gas is made sufficiently small so that the gain available to both the TEM00 and TEM01 modes is reduced gradually to zero at the cavity wall.  Because of the different light distribution in the two modes, the overall gain for the TEM01 mode is significantly less than for the TEM00 mode, thus preventing the TEM01 mode from oscillating.
Patent CA-1132398-A (CA)
Title: Hole trapping layer comprised of nitrogen containing  electron donors for use in overcoated photoreceptors
Inventor: CHU JOSEPH Y C
IPC: G03G5/02
Filed: 1979-11-27
Granted: 1982-09-28
Abstract: ABSTRACT OF THE DISCLOSURE Disclosed is a novel hole trapping layer and the use of this layer in an overcoated photoresponsive device, this trapping layer being comprised in one embodiment of nitrogen containing electron donating molecules containing aromatic amines selected from the group consisting of those within the following formula:       and               wherein Z is Ar or R, R being an aliphatic radical or a substituted aliphatic radical, and Ar is an aromatic radical or a substituted aromatic radical. This hole trapping layer can be used in an overcoated photoreceptor device comprised of a substrate, overcoated with an injecting electrode layer which in turn is overcoated with a transport layer, followed by a generating layer overcoated with the trapping layer and finally an overcoating of an insulating organic polymer. Polymeric nitrogen containing electron donat-ing molecules are also useful trapping layers.