baber/WOPTO huggingface dataset:
Patent CA-1291209-C (CA)
Title: Chemical probe and enzyme sensor having anodized aluminum oxide membrane
Inventor: REIMER ERNEST M
IPC: C12Q1/00
Filed: 1987-09-28
Granted: 1991-10-22
Abstract: Abstract A biochemical probe for determining the freshness of fish or meat, or inspecting the nature of other animal tissues, employs a hypoxanthine enzyme sensor located at a sharp end of the probe.  The sensor comprises a reference electrode, a pair of sensor electrodes, and a membrane that extends over these electrodes to form an outer face of the sensor, this face being a continuation of the surface of the shaft of the probe.  The invention is characterized in that the membrane is a thin layer of anodized aluminum oxide which is highly porous and has a large number of small cells extending from the outer face into communication with the electrodes.  The cells contain an electrolyte, and those of them in communication with a first one of the sensor electrodes also contain immo-bilized hypoxanthine oxidase enzymes.  A comparison of the current flowing between the first sensor electrode and the reference electrode, with the current flowing between the second sensor electrode and the reference electrode, provides an indication of the concentration of hypoxanthine at the outer face of the sensor.  If the probe has been inserted into the meat of a fish, a high hypoxanthine concentration would indicate a lack of freshness.  The miniturized nature of the sensor, its mounting on the end of a sharpened probe, and the use of a thin layer of highly porous anodized aluminum oxide as the enzyme matrix, achieve a faster response time than hitherto available.  The inventive use of anodized aluminum oxide can be applied to a wide range of other chemical (including biochemical) enzyme sensors for mounting in probes or other use.
Patent CA-1328530-C (CA)
Inventor: STANISLAWCZYK VIC
IPC: C08F220/12
Filed: 1987-10-19
Granted: 1994-04-12
Abstract: ABSTRACT OF THE DISCLOSURE        A novel latex containing a polymer having an exceptional balance of physical properties is prepared by polymerizing at least one unsaturated dicarboxylic acid with a copolymerizable monomer(s) and, optionally, a crosslinking monomer in the presence of an effective amount of a surfactant and an initiator.  In a preferred embodiment of the process, the unsaturated dicarboxylic acid is placed all initially in the reactor and a premix containing the copolymerizable monomer(s) and crosslinking monomer(s) is metered into the reactor.  The unsaturated dicarboxylic acid employed contains from 4 to about 10 carbon atoms and is used in an amount from about 2 to about 20 weight parts.  The amount of the copolymerizable monomer employed is from about 70 to 98 weight parts, and the amount of the crosslinking monomer, if used, is from about 0.5 to about 10 weight parts.  The novel polymers have a Tg of from about -20°C. to about -60°C., a percent hysteresis loss of less than about 20%, and a raw polymer tensile strength of at least 300 psi and an elongation of at least 350 percent.
Patent CA-1288193-C (CA)
Inventor: BOUNINI LARBI
IPC: C04B28/14
Filed: 1987-11-20
Granted: 1991-08-27
Abstract: ABSTRACT OF THE DISCLOSURE A method for producing a lightweight set cementitious product having excellent strength by forming a aqueous cementitious slurry, incorporating therein expandable polystyrene beads which are less than completely expanded, and heating the slurry to drive off excess water, to cause a cementitious mixture to set, and to further and completely expand the polystyrene beads.  In a preferred embodiment an aqueous slurry of calcium sulfate hemihydrate is produced including expandable polystyrene beads in a state which they are partially but not fully pre-expanded.  The slurry is deposited between two paper cover sheets, and the product is heated to drive off excess water, to set the gypsum to the solid dihydrate state, and to complete the expansion of the polystyrene beads until they reach their fully expanded state, thereby resulting in a strong lightweight gypsum wallboard which has excellent adhesion between the expaned polystyrene beads and the set gypsum.
Patent CA-1312265-C (CA)
Title: Well-type diagnostic plate device
Inventor: MATKOVICH VLADO I
IPC: B01L3/00
Filed: 1987-12-14
Granted: 1993-01-05
Abstract: Abstract A diagnostic test device is provided including a plate having at least one well, preferably a plurality of wells, each with an open bottom across which a composite membrane comprising three layers is placed, with a hydrophobic, liquid-tight seal provided at the periphery of each well.  The composite membrane from the top or upstream side to the bottom or downstream side, in sequence, includes a first reaction or filtration layer formed from a thin, liquophilic, microporous membrane, a second or sealing layer, preferably a hydrophobic material in sheet or fiber form, such as nonwoven polypropylene fibers, and a liquophobic, preferably hydrophobic, barrier layer having one or more apertures which allows liquid to exit the well while eliminating lateral migration of a pendant liquid drop.  The liquophobic seal provided by the liquophobic sealing layer eliminates "cross-talk" by lateral diffusion or wicking.
Patent CA-1322239-C (CA)
Inventor: COOGAN JAMES J
IPC: B60K17/348
Filed: 1987-12-17
Granted: 1993-09-14
Abstract: SYSTEM FOR CONTROLLING TORQUE TRANSMISSION IN A              FOUR  WHEEL DRIVE            ABSTRACT       A control system  (100)  for a full time four wheel drive vehicle (10) having a transfer case (24) including a planetary gear differential (38) and an  electromagnetically actuated clutch assembly  (46)  for biasing torque betwe n the front and rear drive wheels  (12,14)  in response to signals from the control system.   The control system (100) includes apparatus for detecting wheel  lip  (116)  and a device (118), responsive to the detection of wheel slip for calculating a maximum torque level to be established by the clutch assembly  (46)  as a function of the total torque delivered to the transfer case and for programming clutch torque application over a predetermined time period and in a manner biasing torque through the differential to eli-minate wheel slip.
Patent CA-1301292-C (CA)
Title: Method for storing run data of a vehicle in the memory of an electronic tachograph and apparatus for carrying out the method
Inventor: SZEKELY LEVENTE
IPC: G07C5/08
Filed: 1987-12-24
Granted: 1992-05-19
Abstract: ABSTRACT OF THE DISCLOSURE          A method and apparatus are disclosed for storing run data of a vehicle in the memory of an electronic tachograph and displaying these data with a predetermined resolution.  The method comprises the steps of sensing the movement  of  the  vehicle  by  means  of  a  road  sensor, providing digital distance and velocity data from signals of the sensing step proportional to the advance of the vehicle  and the momentary velocity,  respectively,  and reading the digital data in subsequent cells of data memory of  the  tachograph  in  predetermined  regular  periods corresponding to the degree of resolution.  The data are then read in subsequent cells of an accident memory which has a substantially smaller storage capacity than the data memory at a first rate substantially higher than a sampling rate associated with the predetermined regular periods. The maximum and minimum values of the velocity and the value of the distance during each period is determined, and, in the step of reading in the data memory, at lease the minimum and maximum values of the velocity data and the distance value are entered.  The content of the accident memory is shifted forward at the first rate and the content of the data memory is shifted forward at the sampling rate.
Patent CA-1284408-C (CA)
Title: High speed pick-up head
Inventor: YOUNG GARY B
IPC: E01H1/08
Filed: 1988-01-19
Granted: 1991-05-28
Abstract: ABSTRACT OF THE DISCLOSURE      A  high-speed  pick-up head includes  an  air  pressure chamber  and an air suction chamber respectively  associated with an elongated blast orifice and a suction orifice.   The chambers are arranged in side-by-side relationship generally normal  to the direction of vehicle/pick-up head travel  and have  opposite first and second ends.   Each chamber defines an elongated volume corresponding in length generally to the orifice associated therewith with each volume decreasing  in cross-sectional area toward its closed end.   Respective air inlets  and air outlets of the pressure and suction chambers are opposite each other and the blast orifice can be changed in  size and/or shape,  preferably diverging in a  direction away from the pressure chamber air inlet to maintain maximum air  velocity/flow   which blasts or blows sand  or  similar dense  debris from airport runways for  subsequent  removal/ separation at extremely high efficiencies.
Patent CA-1300280-C (CA)
Title: Central processor unit for digital data processing system including write buffer management mechanism
Inventor: RUBINFELD PAUL I
IPC: G06F12/08
Filed: 1988-02-23
Granted: 1992-05-05
Abstract: ABSTRACT OF THE DISCLOSURE     A processor for use in a digital data processing system including a main memory and a write buffer for buffering write data and associated addresses from the processor for storage in the storage locations identified by the associated addresses in the main memory.  In response to selection occurances, such as a context switch, which cannot be detected outside of the processor, the processor asserts a signal which enables the write buffer to transfer all of its contents to the main memory.  The write buffer, in turn, disables the processor while it is transferring data to the main memory.
Patent CA-1296652-C (CA)
Title: Method and apparatus for transforming a monaural signal into stereophonic signals
Inventor: FERNANDEZ JORGE D
IPC: H04R5/027
Filed: 1988-03-11
Granted: 1992-03-03
Abstract: ABSTRACT OF THE DISCLOSURE An adapter converts a monaural microphone unit for stereophonic operation. The adapter has an elongate cylindrical housing including an input jack which rigidly attaches to the microphone and receives the microphone signal and an output jack which makes stereophonic signals available to recording equipment. Two distinct signal transmission channels are present in the adapter for transmission of the microphone signal to the output jack. A gravity-responsive switch selects which of the two transmission channels is active depending on the orientation of the adapter housing relative to vertical. An interviewer maintains the adapter and microphone in a vertical orientation or inclined towards him to record his questions along one channel and tilts the adapter unit towards his subject to record the response on the other signal channel. Resistors couple the two transmission channels to ensure that the non-active signal channel is not silentbut at least carries the microphone signal in attenuated form. Delay circuits prevent sudden activation and deactivation of the transmission channels as by momentary tilting of the adapter and microphone.
Patent CA-1302136-C (CA)
Title: Optical coupling system
Inventor: TODA MINORU
IPC: G02B6/42
Filed: 1988-03-24
Granted: 1992-06-02
Abstract: RCA 82,988 OPTICAL COUPLING SYSTEM               Abstract of the Disclosure An optical coupling system comprises a radiation emitting device and a radiation receiver.  The radiation emitting device has an emitting end face and emits radiation having an optical axis of symmetry which is inclined at an output angle relative to the direction perpendicular to the emitting end face.  The radiation receiver has a receiving axis and a receiving end face which is inclined at a wedge angle relative to a plane perpendicular to the receiving axis and the receiving end face is positioned adjacent the emitting device.  The receiving end face may be first inclined at the wedge angle such that the optical axis of incident radiations is inclined at an angle relative to the normal of the receiving end face.  The receiver is then positioned such that the receiving axis is inclined at a receiving angle relative to the normal of the receiving end face such that the radiation propagates about in the direction of the receiving axis.
Patent CA-1286363-C (CA)
Inventor: LIN CHIA-LUNG
IPC: G01R31/50
Filed: 1988-03-29
Granted: 1991-07-16
Abstract: IMPROVED TECHNIQUE FOR DETERMINING THE VALUES OF CIRCUIT ELEMENTS IN A THREE TERMINAL EQUIVALENT CIRCUIT           Abstract A technique which improves the accuracy of determining the circuit element values in a three terminal equivalent circuit is disclosed. The improvement results from the use of at least one ratio wherein the numerator and denominator of each ratio is a different function of at least one measurement of the three terminal equivalent circuit. Each ratio is representative of the true value of one preselected circuit element to another preselected circuit element value. This technique can be used for DC or AC analysis of the equivalent circuit and can be adapted for different sources of measurement errors.
Patent CA-1307435-C (CA)
Title: Use of graft polymers based on polyesters, polyester urethanes and polyester amides as grayness inhibitors in detergents
Inventor: KUD ALEXANDER
IPC: C11D3/37
Filed: 1988-04-07
Granted: 1992-09-15
Abstract: O.Z. 0050/39110 Abstract of the Disclosure:  Detergents contain graft poly-mers obtainable by grafting a)   polycondensates based on polyesters, polyester ure-thanes and polyester amides and having in each case a number average molecular weight from 500 to 100,000 with b)   from 0.2 to 10 parts by weight, based on 1 part by weight of the polycondensates, of vinyl esters of saturated C1- to C6-carboxylic acids, acrylic and/ or methacrylic esters of saturated monohydric alco-hols containing 1 to 4 carbon atoms.
Patent CA-1283544-C (CA)
Title: Industrial treatment machines with rotating vessel
Inventor: PERROT YVAN
IPC: F16P3/08
Filed: 1988-04-12
Granted: 1991-04-30
Abstract: ABSTRACT OF THE DISCLOSURE        This invention relates to improvements in industrial treatment machines with rotating vessel, wherein the vessel is driven in rotation via the door for obturating the access opening, so that, by switching on the gear motor, said door automati-cally closes, whilst reversal of the direction of rotation provokes opening thereof.
Patent CA-1317058-C (CA)
Title: Drying process
Inventor: BANFORD JONATHAN
IPC: F26B21/14
Filed: 1988-04-14
Granted: 1993-04-27
Abstract: ABSTRACT OF THE DISCLOSURE                         Drying Process When it has been attempted to dry wet polymeric particles in hot air at up to 110°C it has tended to produce discoloration in the product, introduce aggregates into the product, reduce the dispersibility of the product and reduce the integrity of the surface of the particles.     A process of drying has now been developed which comprises heating  to  an  elevated  temperature  the  wet  particles  in  an atmosphere substantially free of oxygen gas so that substantially all  of  the  moisture  is  removed  from  association  with  said particles and under such conditions of time and temperature that any substantial deterioration of said particles is minimised.     Preferably the atmosphere is of nitrogen.
Patent CA-1305432-C (CA)
Title: Automatic loudness control circuit
Inventor: KATO MASAMI
IPC: H03G9/02
Filed: 1988-04-15
Granted: 1992-07-21
Abstract: ABSTRACT OF THE DISCLOSURE           An automatic loudness control circuit for automati-cally  controlling  the  magnitude  of  boosting  of  the  low-frequency component of an audio signal in accordance with the output signal level of a power amplifier for driving a loud-speaker.   The low-frequency component of the output signal from an audio signal source is boosted by a low frequency boosting  circuit to prepare a  low-frequency boost signal, which is then added to the output signal of the source, and the  resulting signal is fed to the power amplifier.   The magnitude of boosting by the boosting circuit is controlled according to the output level of the power amplifier and is therefore increased as the output level lowers.  Consequently, the circuit assures optimum loudness control at all times, permitting the loudspeaker to produce dynamic sounds.
Patent CA-1322011-C (CA)
Title: Welan gum in cement compositions
Inventor: ALLEN FLOYD L
IPC: C08B37/00
Filed: 1988-05-05
Granted: 1993-09-07
Abstract: TITLE OF THE INVENTION    WELAN GUM IN CEMENT COMPOSITIONS      ABSTRACT OF THE INVENTION    Cement  compositions,  i.e.,  mortar,  structured concrete,  pre-cast  concrete,  and  oilfield  cement, comprising 0.01-0.9% (wt/wt) welan gum are described.          The cement compositions exhibit improved workability, suspension  of  aggregates,   air  entrainment,   sag resistance, flow characteristics and resistance to water loss.   These improvements are maintained at elevated temperature.
Patent CA-1305835-C (CA)
Title: Wood preservatives and process for using same
Inventor: HEIN RICHARD W
IPC: B27K3/12
Filed: 1988-06-09
Granted: 1992-08-04
Abstract: Abstract of The Disclosure The  present  invention  provides for a composi-tion  for  preserving  wood  comprising  (A) at least one metal  salt  of  an organic carboxylic acid containing at least  about  6  carbon atoms; (B) an effective amount of at  least  one  oil to disperse and/or dissolve said salt in  said oil; and (C) an effective amount of at least one thickener  to provide said composition with a grease-like consistency.   Optional ingredients include (D) solvent/-diluents;  (E)  surfactants;  and/or (F) wood-stabilizing agents.   The invention further provides for a method for treating  wood  using  the  foregoing  composition;  this method  is  particularly  suitable for treating wood that is  already  in place such as standing poles (e.g., util-ity poles).
Patent CA-1324972-C (CA)
Title: In vitro embryo culture technique
Inventor: PERRY MARGARET M
IPC: A01K45/00
Filed: 1988-06-17
Granted: 1993-12-07
Abstract: ABSTRACT                      CULTURE TECHNIQUES           Avian embryos may be cultured in vitro up to blastoderm formation, during embryonic morphogenesis and/or during embryonic growth to hatch.  The invention may have applications not only in the genetic engineering of poultry, but also in the investigation of fundamental mechanisms of avian development and in the study of deleterious traits.     Moreover,  it may afford a desirable alternative to surgical intervention in the laying hen.
Patent CA-1303325-C (CA)
Title: Water treating apparatus
Inventor: DEMPO FUMIO
IPC: C02F1/48
Filed: 1988-06-24
Granted: 1992-06-16
Abstract: ABSTRACT    To sterilize and purify continuously water in a water tank, a water treating apparatus is provided that comprises a circulating type water pipe for taking the water in the water tank outside the water tank and then for returning the water into the water tank, and an ozone supply apparatus, a filtering apparatus,  and an ultraviolet-light irradiating apparatus that are situated in the course of the water pipe, so that water can be sterilized and purified thoroughly by a three-stage treatment including "an ozone treatment" wherein the decomposition of organic substances, deodorization and inactivation of microorganisms by ozone can be expected, "a filtering treatment" wherein the elimination of foreign matters and microorganisms can be expected, "an ultraviolet treatment" wherein the sterilization by ultraviolet rays can be expected.
Patent CA-1325063-C (CA)
Title: Tracking and resampling method and apparatus for monitoring the performance of rotating machines
Inventor: POTTER RONALD W
IPC: G01M99/00
Filed: 1988-08-08
Granted: 1993-12-07
Abstract: TRACKING AND RESAMPLING METHOD FOR MONITORING THE PERFORMANCE OF ROTATING MACHINES           Abstract of the Detailed Description A tracking and resampling method for monitoring the performance of a rotating machine (10) is disclosed. One or more measuring devices (13) provide rotating machine performance data to a signal processor (14) that samples the performance data at uniform time increments. A digitized waveform of the sampled performance data is interpolated by an interpolation filter. The sampledperformance data is convolved with the impulse response of the interpolation filter to provide a continuous time function waveform depicting the rotating machine performance data. The signal processor (14) resamples the continuous time function waveform at uniform rotating shaft phase angle increments.
Patent CA-1304590-C (CA)
Title: Filter-vessel made of plastic
Inventor: BOECKSTIEGEL JUERGEN
IPC: A47J31/06
Filed: 1988-09-19
Granted: 1992-07-07
Abstract: Abstract of the Disclosure A filter holder for making coffee or tea, includes means for closing the bottom outlet-aperture consisting of a clamping lever mounted pivotably to the upper edge of the holder.   The underside of the lever comprises a clamping  cam  within  the  pivoting  range  of  which  is located a   section   of   a  member,   moulded  to   the closure-rod, running parallel with the pivot axis, with a resilient strip moulded to the underside of that section, running  parallel  with  the  longitudinal  axis  of  the closure-rod  and  passing  through  an  opening  in  the carrying handle of the filter holder.  Actuation of the clamping lever can be done with the thumb of one hand to open or close the filter holder, more conveniently than with prior such devices.
Patent CA-1283680-C (CA)
Title: Microwave c-switches and s-switches
Inventor: ENGEL KLAUS G
IPC: H01P1/12
Filed: 1988-09-28
Granted: 1991-04-30
Abstract: ABSTRACT A microwave switch that is an S-switch or a C-switch or the like has an electromagnetic actuator and a plurality of armatures.  The armatures move simultaneously in a linear path in response to the electromagnetic actuator.  The actuator has one permanent magnet for each aperture and the switch has at least one coil winding.  When an electric current is passed through the winding, the armatures move into a closed or open position, as desired.  The only moving parts in the switch are the armatures themselves.  The switch does not contain any complex mechanical arrangement or return springs that have been found in previous switches.  The mass and volume of the switch as well as the number of moving parts is greatly reduced when compared to previous switches. This is very important when the switch is used in satellites.
Patent CA-1305521-C (CA)
Title: Underground cable testing method
Inventor: CALVERT DOUGLAS D
IPC: G01R31/08
Filed: 1988-11-07
Granted: 1992-07-21
Abstract: Abstract of the Invention Breaks in the bare neutral conductor of an underground electric cable can be located by applying an alternating signal across the neutral conductor and a phase conductor at one end of the cable.  The neutral and phase conductors are connected together at the other end of the cable.  The elec-trical potential of the alternative signal is measured at a series of spaced apart points on the earth's surface along the cable's path.  The potential between points over a cable section with an open in the neutral conductor will be about two orders of magnitude greater than the potential between points above good cable section.
Patent CA-1328200-C (CA)
Title: Combustion of low btu/high moisture content fuels
Inventor: MULLEN WALTER T
IPC: F23G7/02
Filed: 1989-01-09
Granted: 1994-04-05
Abstract: ABSTRACT OF THE DISCLOSURE The present invention discloses a method of combusting low B.T.U., high moisture content fuels wherein the fuels are introduced into a furnace and dried, pyrolyzed and burned therein thereby generating recoverable heat.  The method comprises enriching the process air with which the process products are burned with oxygen in an amount sufficient to increase the rate of reaction of the fuel through oxygen concentration effect and to increase the temperature of combustion to effect an increase in the reaction rate of the fuel and drying rate, the temperature of combustion whereby the rate at which the fuel being combusted may be increased.