baber/WOPTO huggingface dataset:
Patent CA-1155187-A (CA)
Inventor: DAVIS JAMES A
IPC: H03K17/74
Filed: 1980-12-22
Granted: 1983-10-11
Abstract: Davis-7 CONTROL CIRCUITRY USING TWO BRANCH     CIRCUITS FOR HIGH-VOLTAGE SOLID-STATE SWITCHES             Abstract of the Disclosure To switch a first gated diode switch to the "OFF" state requires a voltage applied to the gate which is more positive than that of the anode or cathode and a sourcing of current into the gate of substantially the same order of magnitude as flows between the anode and cathode of the first switch.  Control circuitry, which uses a second gated diode switch coupled by the cathode to the gate of the first switch, is used to control the state of the first switch.  The control circuitry also comprises a first branch circuit coupled to the anode of the GDSC and to a first potential source V1 and a second branch circuit coupled to the anode of GDSC and to a second potential source V2 which is of a lower potential than V1.  The second branch circuit has a high voltage and high current capability switch in series between V2 and the anode of GDSC.  The first branch circuit has a high voltage but modest current handling switch in series between V1 and the anode of GDSC.  The second branch circuit is used to provide a surge of current if and when needed during the current break operation to turn GDSL1 to an OFF state and the first branch circuit is used to maintain the state of the load switch.  The second branch circuit can be shared by many control circuits.
Patent CA-1142169-A (CA)
Inventor: STOCKMAN RICHARD F
IPC: F28D19/04
Filed: 1981-01-28
Granted: 1983-03-01
Abstract: TURNDOWN INDICATOR FOR ROTARY REGENERATIVE HEAT EXCHANGER            ABSTRACT OF THE DISCLOSURE          A rotary regenerative heat exchange apparatus having a rotor 10 carrying a mass of heat absorbent material that is ultimately exposed to a hot and a cold fluid in order that heat absorbed from the hot fluid may in turn be transferred to the cold fluid.  The rotor 10 is surrounded by a housing 18 including a sector plate 30 at the hot end of the rotor that separates the fluids.  A turndown indicator 40 operatively associated with the hot end sector plate 30 is provided so that the operator may at any time determine the amount of turndown of the rotor thereby permitting adjustment of the sector plate or other sealing means to reduce to a minimum any fluid leakage between the hot and cold fluids throughout a wide range of temperature variation and thermal expansion.
Patent CA-1140161-A (CA)
Inventor: MULASKEY BERNARD F
IPC: C10G69/08
Filed: 1981-02-23
Granted: 1983-01-25
Abstract: ABSTRACT OF THE DISCLOSURE Processes for selectively converting adsorbable hydrocarbon feeds containing straight-chain and slightly branched-chain hydrocarbons to olefins by contacting the feeds with crystalline silicates and with low-sodium crystalline silicates are disclosed.
Patent CA-1188452-A (CA)
Title: Disposable surgical apparel and method of producing  it
Inventor: COATES DAVID A
IPC: A42B1/04
Filed: 1981-05-13
Granted: 1985-06-11
Abstract: ABSTRACT       DISPOSABLE SURGICAL APPAREL AND METHOD OF PRODUCING IT     Disposable apparel, especially disposable surgical apparel comprises, as a protective barrier layer, a nonwoven web including or consisting of fibrillated electrect fibers e.g. of polypropylene, the electret fibers in said web having a weight of not more than 75 g/m2, preferably not more than 50 g/m2, and said fibers having an average width or diameter of at least 10 microns.   The apparel may include   support means for the protective barrier layer such as two webs of nonwoven fabric retaining the protective barrier layer therebetween.     A method of  producing the apparel is described in which the protective barrier layer is provided by laying a web of fibrillated electret fibers by air-laying means.
Patent CA-1182275-A (CA)
Inventor: PETERSSON STIG A
IPC: C01B17/76
Filed: 1981-06-11
Granted: 1985-02-12
Abstract: A B S T R A C T            A method for manufacturing sulphuric acid from sulphur-dioxide con-taining gas, particularly furnace gas obtained from metallurgical processes by oxidation to sulphur trioxide in the presence of a catalyst and conversion of the sulphur trioxide to sulphuric acid. The sulphur dioxide is first separated from the gas preferably con-verted to liquid form and is then subsequent to being vaporized in a stoichiometric excess oxidized with oxygen.
Patent CA-1189769-A (CA)
Inventor: KAHN ANDREE
IPC: C30B29/20
Filed: 1981-07-10
Granted: 1985-07-02
Abstract: ABSTRACT OF THE DISCLOSURE      Mixed aluminium oxide, wherein it has the following formula.                            in which X1 and X2, which can be the same or different, represent a metal in the group of rare earths, provided that X1 and x2 are different when X1 or X2 stand for cerium, lanthanum or gadolinium and provided that when X2 stands for gadolinium,  lanthanum, europium, terbium or dysprosium X1 stands for a metal of the group of rare earths other than cerium; M1  and M2, which can be the same or different, stand for a metal chosen from the group including magnesium and divalent transition metals; M3 stands for a trivalent transition metal; x1 stands for a number between 0.8 and 1; y1 stands for a number between 10 and 12; and x2, y2 and z2, which can be the same or different, stand for a number between 0 and 1 and wherein they have a crystalline structure of the magnetoplumbite type.     The invention also relates to process for producing such a mixed oxide.    Particular applications of a monocrystal of such a mixed oxide are to power lasers emitting in the infrared and to telecommunications by optical fibres.
Patent CA-1156459-A (CA)
Inventor: FINDLAY HUGH T
IPC: B41M5/26
Filed: 1981-10-09
Granted: 1983-11-08
Abstract: POLYURETHANE RIBBON FOR NON-IMPACT PRINTING                   Abstract A ribbon for thermal printing comprising a transfer coating and a substrate which is a polyurethane resin containing electrically conductive carbon black.
Patent CA-1177535-A (CA)
Inventor: MORIARTY ROBERT M
IPC: H02M7/527
Filed: 1981-10-09
Granted: 1984-11-06
Abstract: Selective Commutation Circuit For An Inverter Abstract A selective commutation technique used with an inverter eliminates one of the two commutation pulses at those points at which there is a particular rela-tionship of inverter operating characteristics.  If the power factor angle .theta., the voltage phase angle .delta., and the voltage pattern notch angle .beta. are sensed to determine this particular relationship.  Because at the switching point there is no current flowing through the conducting thyristor, the conducting thyristor can then be transitioned to the noncon-ducting state merely by the removal of its gate signal. A single makeup pulse is then rung through the system to initialize the commutation capacitors for the next switch point.
Patent CA-1181888-A (CA)
Title: Surface coating compositions of increased light  transmission
Inventor: SWERDLOW MARTIN S
IPC: C08J7/054
Filed: 1981-11-03
Granted: 1985-01-29
Abstract: ABSTRACT OF THE DISCLOSURE     Coating compositions suitable for application to optical surfaces to reduce surface misting and light reflection without creating haze comprise:     (a)  an inorganic particulate component selected from colloidal silica particles, colloidal alumina particles, or a mixture thereof wherein the silica or alumina particles have a small particle size represented by an average particle size in the range 7 to 50 nm and the particles comprise 0.5 to 2.5% weight/volume of the total composition; (b)  another inorganic particulate component also selected from colloidal silica particles, colloidal alumina particles, or a mixture thereof wherein the silica and alumina particles have a large particle size represented by an average particle size in the range 75 to 150 nm and the particles comprise 0.2 to 1.0% weight/volume of the total composition; (c)  0.1 to 1.0% weight/volume of a polymeric binder; and  (d)  a volatile liquid medium.      The coating compositions provide especially beneficial properties when applied to thermoplastic films and sheets, such as polyethylene terephthalate films. Such films are suitable as coverings or claddings for horticultural growing houses, cold frames and cloches.
Patent CA-1171466-A (CA)
Inventor: KOSENSKI ROBERT L
IPC: B23H7/30
Filed: 1981-11-04
Granted: 1984-07-24
Abstract: ABSTRACT OF THE DISCLOSURE         The disclosure teaches an EDM machine hav-ing a base supporting a workpiece, a ram reciprocable on the base and a plurality of electrodes carried by the ram to engage and drill the workpiece.  In accordance with the invention, a limit switch limits the retraction movement of the ram in combination with an actuator magnetically held on and movable on the ram and an automatic stop device.  The stop device includes a member on the base in a position to engage the actuator during the drilling movement of the ram to adjust the position of the actuator on the ram.
Patent CA-1172846-A (CA)
Inventor: WILLIAMS PAUL
IPC: G01B13/06
Filed: 1982-02-11
Granted: 1984-08-21
Abstract: ABSTRACT      An apparatus such as a caliper gauge can be utilized in performing a measurement, such as a  thickness measure-ment, of a traveling sheet or the like.  The apparatus comprises a surface follower body (18, 72, 74) adapted to be constrained during the measurement for movement along a surface follower path intersecting the path of the sheet (10, 80) and urged by a force toward one surface of the sheet.  The body has a gas confining wall (aye, 90, 104) bounded by uniformly distributed pressurized gas supply means (46, 92, 106) for pressurizing a gas bearing region (48, 108, 110) contiguous to the sheet surface with sufficient pressure against the sheet and the wall to levi-tate the body against the urging force.  The pressuriza-tion is effected without producing substantial amounts of high velocity gas flow over the surface of the sheet within the gas bearing region.  The body is maintained at a distance from the sheet surface that is substantially constant and relatively unaffected by variations in the roughness of the surface.
Patent CA-1181991-A (CA)
Inventor: DAVIS CHARLES W
IPC: F02M41/14
Filed: 1982-03-24
Granted: 1985-02-05
Abstract: ABSTRACT OF THE DISCLOSURE      A fuel injection pump is provided with an improved spill control mechanism to accurately supply  a desired fuel charge to an internal combustion engine.  The fuel pump includes a rotor having a charge pump for pressurizing measured charges of fuel for delivery to the engine and a cam ring adapted to rotatably receive the rotor and to actuate the charge pump upon rotation of the rotor.  The cam ring is angularly adjustable to control the timing of the pressurized fuel delivery to the engine.  A spill collar mounted adjacent to the cam ring and adapted to rotatably receive the rotor includes a spill port for diverting fuel flow from the charge pump upon registration of a spill passage in the rotor with the spill port in the collar.  A pivotal crank mounted on the cam ring and engageable with the spill collar is provided for adjusting the angular position of the spill collar relative to the cam ring to control the amount of fuel diverted from the charge pump.  The fuel pump preferably includes a governor mechanism operable upon rotation of the rotor and operatively connected to the crank for automatically adjusting the angular position of the spill collar to maintain a desired engine speed.
Patent CA-1200743-A (CA)
Inventor: JONES DONALD W
IPC: G01N30/90
Filed: 1982-03-25
Granted: 1986-02-18
Abstract: IMPREGNATED SUBSTRATE FOR CHROMATOGRAPHIC ASSAYS                 Abstract of the Disclosure A test and test article for carrying out thin-layer chromatography for the detection of drugs in a physiological medium is diclosed.  The chromatographic plate for carrying out the test is impregnated with a vanadium salt which chemically reacts with a broad range of basic amine-containing drugs in the presence of concentrated sulphuric acid to produce a characteristic color on the chromatographic plate. The steps of extracting the drug from the physiological medium, introducing the drug to the chromatographic plate and developing the chromatographic plate are conventional.  By including the vanadium salt on the chromatographic plate, however, the detection of the drugs thereon is carried out by exposure to sulphuric acid alone.
Patent CA-1179995-A (CA)
Inventor: NOWACKI ULRICH G
IPC: B65B11/20
Filed: 1982-03-25
Granted: 1984-12-27
Abstract: ABSTRACT     Automatic wraparound packaging machinery comprising a carton blank feeding station, can accu-mulator, lowerator platform and gluing and sealing station is provided with a loading head adapted for receiving the supply of articles (e.g., cans) to be packed and for forming the articles into discrete groups.  The apparatus further comprises a retract-able loading curtain associated with the loading head and means associated with the loading head for retracting the loading curtain to release the group of articles formed in the loading head and for returning the loading curtain to its normal position for supporting the next group of articles formed in the loading head.  In one embodiment, the articles are packed in the carton in one tier.  In another embodiment, releasable lifting means are provided for lifting every other group or articles to form an upper and a lower tier of articles, thus producing a two-tiered arrangement of articles to be packed.
Patent CA-1181366-A (CA)
Inventor: CHRISTIAN WAYNE
IPC: B03B4/06
Filed: 1982-05-03
Granted: 1985-01-22
Abstract: GRAIN CLEANING DEVICE     Abstract of the Disclosure A grain cleaning device is provided which separates foreign material from grain by aspiration.  The aspiration force is developed by a fan which is attached to the grain cleaning device.  The device includes a housing, a grain inlet in said housing, a louvered grain slide located within said housing, an opening within the housing which is compatible with the fan, air intake holes within the housing and adjustable covers for said air intake holes.  The grain enters the grain cleaning device through the grain inlet and travels down the louvered grain slide.          The fan which is located above the louvered grain slide acts as an  aspirator and removes the foreign material from the grain which has a density less than the density of the grain.  The foreign materials are drawn up through the fan and out an exhaust vent.  The housing includes a grain slide housing and a chimney, the chimney being attached to the top  of the grain slide housing The grain slide and grain inlet are located in the grain slide housing and the fan is attached to the chimney.  The grain slide extends from below the grain inlet at an angle to the bottom of the grain slide housing.  The grain after being cleaned falls out of bottom of the grain slide housing into a pit, grain elevator skirt, etc.
Patent CA-1211387-A (CA)
Inventor: FORT EDWARD S
IPC: F16J13/18
Filed: 1982-05-12
Granted: 1986-09-16
Abstract: ABSTRACT OF THE DISCLOSURE        In order to provide a lid for a pressure vessel which avoids the problems involved in the manufacture of known lids and which is more economical to make the present invention provides a lid comprising an inner skin and an outer skin, both of which are formed as pressings.  The inner skin has a circumferential seal groove formed as part of the pressing operation.  The proviso of the one piece inner skin avoids the need for any welding to be performed within the sealed area whilst the combination of the inner and outer skins ensures that the required strength is achieved.
Patent CA-1190742-A (CA)
Inventor: SAWYER EDGAR W JR
IPC: C10L1/32
Filed: 1982-05-14
Granted: 1985-07-23
Abstract: Abstract of Disclosure There is disclosed a novel fuel slurry comprising a mixture of finely ground coal constitut-ing 65 to 70 percent of the fuel, water, a wetting/ dispersing agent for the coal constituting 0.5 to 5 percent of the fuel and a suspending agent for stabi-lizing the fuel slurry which agent constitutes a clay such as attapulgite clay in the dry, pregelled or predispersed form.  Other clays can be employed as a stabilizer, as a predispersed non-gelling montmorilla-. nate clay. If the coal slurry is to be used imme-diately the clay or other gelling agent is not necessary to maintain suspension stability.
Patent CA-1191998-A (CA)
Inventor: TOMURA YASUSHI
IPC: C08F2/00
Filed: 1982-07-27
Granted: 1985-08-13
Abstract: ABSTRACT        IMPROVED PROCESS FOR PREPARING ETHYLENE POLYMER           A process for preparing an ethylene polymer by polymerization of ethylene or its mixture with at least one other copolymerizable monomer at an elevated temperature under an elevated pressure, characterized in that the polymerization is carried out in the presence of an ionic polymerization catalyst in at least two autoclave reactors, including a first autoclave reactor and a second autoclave reactor, connected in series by means of a connecting pipe(s) and provided with a cooler on the connecting pipe between the first autoclave reactor and the second autoclave reactor, and the polymerization is initiated in the first autoclave reactor to a certain extent, the reaction mixture is discharged therefrom through the connecting pipe, cooled in the cooler and sent to the second autoclave reactor, and the polymerization is further continued therein.
Patent CA-1215021-A (CA)
Inventor: SUGIMOTO KENJI
IPC: C04B41/63
Filed: 1982-08-19
Granted: 1986-12-09
Abstract: ABSTRACT OF THE DISCLOSURE           Disclosed is a process for the preparation of an electron beam cured gypsum panel which comprises subjecting a hydrated gypsum slurry which may contain an additive, fibrous material, fine aggregates and water to defoaming, setting and drying to form a gypsum substrate, coating an electron beam curable resin composition on the surface of the gypsum substrate to form a coated film, and irradiating the coated film with an accelerated electron beam to effect curing.
Patent CA-1181308-A (CA)
Inventor: NEVENS CHARLES
IPC: A61M1/02
Filed: 1982-09-02
Granted: 1985-01-22
Abstract: PLASMAPHERESIS ASSEMBLY AND   ASSOCIATED FLUID MANIFOLD     ABSTRACT OF THE DISCLOSURE           A plasmapheresis assembly includes a fluid manifold which interconnects the phlebotomy needle of the assembly with a pair of blood collection containers. The manifold includes a removably insertable plug member which when inserted, blocks fluid flow through the manifold to retain anticoagulant solution in the containers prior to use and which, after removal, affords fluid flow through the manifold and permits the attachment of a recipient set to the manifold.
Patent CA-1196142-A (CA)
Inventor: FESKO DONALD G
IPC: C08J5/24
Filed: 1982-09-29
Granted: 1985-10-29
Abstract: ABSTRACT          A new composition of matter comprises the product of the amassment of two or more arrays of glass roving or other  suitable  filaments,  each  of  which  array  has  been coated or impregnated with one of two complementary resin systems, preferably thermosetting polyester resin systems. Each such    complementary    resin    system   comprises substantially the same or  functionally similar resin and each further comprises a curing agent,  for example,  in the case of polyester resin an organic peroxide, which curing agent differs  from  the  curing  agent  in  the other  resin system.  The resin system of each array further comprises suitable accelerator which is substantially ineffective to promote the curing agent of the resin system in which it is  incorporated,  but which does  effectively  promote  the curing  agent  of  the  other,  complementary  resin  system. Upon amassment of the separate arrays the two accelerators act synergisticly in the combined resin system.  Thus, the resulting   novel   composition  of   matter   provides extremely rapid cure resin system, wherein curing agent is dispersed substantially uniformly throughout the resin to be cured.  The invention is applicable to filament winding techinques and the like to provide extremely rapid curing even at room temperatures and to provide products having improved physical properties.         Related  aspects  of  the  invention  provide  novel methods of preparing and novel methods of using the novel composition of matter.
Patent CA-1199027-A (CA)
Inventor: HARGREAVES RODNEY B
IPC: C07D417/04
Filed: 1982-11-02
Granted: 1986-01-07
Abstract: ABSTRACT                   Heterocyclic Compounds Heterocyclic compounds of the formula:-  wherein A is a direct link, or is alkylene of 1 to 4 carbon atoms or alkenylene of 2 to 4 carbon atoms; wherein either X is -CR1R2- and Y is -O-, -S- or -NR3-, wheren R1, R2 and R3, which may be the same or different, each is hydrogen or alkyl of up to 4 carbon atoms; or X is -O-, -S- or -NH- and Y is -CR1R2- wherein R1 and R2 have the meanings stated above; and wherein Het is a 5- or 6- membered heterocyclic ring containing 1, 2 or 3 heteroatoms selected from nitrogen, oxygen or sulphur atoms, which ring may be unsubstituted or may bear one or two substituents as set out in claim 1, provided that when X is -CR1R2- and A is a direct link, Het is not unsubstituted 2-furyl; and salts thereof where appropriate;  processes for their manufacture and pharmaceutical compositions containing them.  The compounds possess cardiotonic and/or antihypertensive activity.
Patent CA-1172457-A (CA)
Inventor: CAPOLUPO DAVID F
IPC: A44C5/14
Filed: 1982-11-17
Granted: 1984-08-14
Abstract: WRISTWATCH ATTACHMENT WITH INTERCHANGEABLE END PIECES     Abstract Of The Disclosure An  interchangeable  end  piece  member  for  removably  connecting  a watchband to a wristwatch case so as to accommodate watchbands universally to watchcasings having various spacings and configurations between the lugs for spring bars of different lengths.  The end piece member has at least one tongue which slides into a mating longitudinal groove in a retainer clip attached to the watchband.  A resilient tab locks the tongue in the groove, with means to release the tongue by deflecting the tab.
Patent CA-1200716-A (CA)
Inventor: TAZAKI SHIGEMITSU
IPC: G06K15/10
Filed: 1982-11-19
Granted: 1986-02-18
Abstract: ABSTRACT OF THE DISCLOSURE        A multicolor serial dot printer has memories for storing printing data, which memories number the same as the recording colors.  A bar graph, for example, is printed in staggered patterns and numerals and the like are superposed on it.  For printing in black and red, for example, the graph data to be printed in red is stored in a memory, while the numeral data to be printed in black is stored in another memory.  A control section controls read/write operations of the printing data into and from the memories, and also controls the operation of a printer control section.  Under the control of the control section, the printer control section drives ink jet nozzles to print in accordance with the printing data read out from the memories.     The printed graph is easy to see, and printing paper sheets are saved.
Patent CA-1191604-A (CA)
Inventor: NAKANO KENJI
IPC: G11B5/09
Filed: 1982-11-23
Granted: 1985-08-06
Abstract: ABSTRACT OF THE DISCLOSURE         A method and apparatus for recording and reproducing an information signal comprised of a video signal and an audio signal in a plurality of successive parallel tracks on a magnetic tape, each track including a first audio section followed by a video section, by converting the audio signal into a PCM digital audio signal; compressing the PCM audio signal; frequency modulating the compressed PCM audio signal to produce an output PCM audio signal; and recording the output PCM audio signal and the video signal in the plurality of successive tracks such that one field interval of the video signal is recorded in the video section of each track and the output PCM audio signal corresponding to one field interval of the video signal is recorded in the audio section of each track and corresponds to the video signal in the leading portion of the previous successive track and the video signal in the trailing portion of the previous alternate track, wherein the audio signal recorded in each track is delayed by a maximum of .5 field intervals from the video signal to which it corresponds.