baber/WOPTO huggingface dataset:
Patent CA-1294013-C (CA)
Title: Frequency modulation in phase-locked loops
Inventor: FLUGSTAD BEN
IPC: H03L7/18
Filed: 1988-07-21
Granted: 1992-01-07
Abstract: Abstract A phase-locked loop (PLL) frequency synthesizer having an analog, out-of-band component path and a digital, in-band component path to provide frequency modulation (FM) of the synthesized output signal is described.  The in-band FM component is octave scaled by an analog scaling means and coupled to an analog-to-digital converter to provide a digital number to be decade added to the PLL divide number to change the PLL frequency in response to the in-band FM signal.  The out-of-band FM component is also scaled and applied to a loop summing node and summed with the PLL error signal to vary the PLL frequency.  The scaling in both the in-band component path and out-of-band component path is equalized to provide a flat frequency response.          Additional, the in-band component is scaled to allow use of the analog-to-digital converter over its maximum range to maintain a high signal-to-noise ratio.
Patent CA-1325278-C (CA)
Title: Method of analysing fluid influxes in hydrocarbon wells
Inventor: GAVIGNET ALAIN
IPC: E21B47/10
Filed: 1988-08-02
Granted: 1993-12-14
Abstract: Method of Analysing Fluid Influxes in Hydrocarbon Wells Abstract The invention  relates to a method of analysing fluid influxes into an oil  well  from  an underground formation.  During a drilling mud transient flow  state,  the  successive  values  of  the  rate  Qi  or pressure Pr of injection  of  the  drilling mud into the well and the successive values of the  rate  Qr  or pressure  Pr  of  return  of  the  drilling mud  to the surface  are  measured.    The  changing  values of the rate or pressure of injection  are  compared with  the  changing values of the return rate or pressure.    From this comparison the nature and volume of the fluids that have penetrated into the well are determined.    Application to the drilling of oil wells.            (Figure 1)
Patent CA-1329267-C (CA)
Title: Apparatus and method for determining plant fluorescence
Inventor: VIDAVER WILLIAM
IPC: G01N21/64
Filed: 1988-08-09
Granted: 1994-05-03
Abstract: APPARATUS AND METHOD FOR DETERMINING PLANT FLUORESCENCE     ABSTRACT           An  apparatus  and  method  for  determining  the photosynthetic  activity  of  a  plant  by  determining  the chlorophyll fluorescence of the plant  is provided.   The apparatus includes a light impermeable housing, a light to illuminate the housing, a light intensity in the housing and to adjust the light intensity controller.  The light intensity  may  be  between  zero  and  700  micromoles  of photons per square meter per second.  The monitor may be a photodiode protected by light  filters which permit only light of wavelengths corresponding to plant fluorescence emission to pass to the photodiode.  A computer analysis the  data  obtained,  corrects  for  Dark  and  Straylight signals  in  the  housing  and  normalize  the  data  by correcting  for  the  Fo  fluorescence.    A  method  of estimating Fo  is provided which includes  illuminating a light impermeable chamber housing a plant with light of a pre-determined   intensity,   measuring   the   fluorescence emission, determining the slope of a first regression line prior  to  full  opening  of  the shutter;  determining  the slope of a second regression line of measurements after the   shutter   is   fully  opened   and  determining   the intersecting point between these two lines.  A method of determining  the  corrected  and  normalized  fluorescence emissions  from  a  plant  is  provided  and  includes  the following calculations:            (1)  FVAR(t) = Fmeas(t)-Lst-Ds where:     FVAR (t) is the corrected fluorescence at time t Fmeas(t) is the measured fluorescence at time t Lst is the straylight signal, and Ds is the Dark Signal (2)   where:       FVAR is   the   corrected   and   normalized fluorescence, and FO is the FO fluorescence estimate
Patent CA-1325479-C (CA)
Inventor: MILLAR PAUL C
IPC: G10L15/06
Filed: 1988-08-26
Granted: 1993-12-21
Abstract: ABSTRACT              A speech recognition system comprises a recognizer for receiving speech signals from users.  The recogniser compares each received word with templates of words stored in a reference template store and flags each template that corresponds most closely to a received word.  The flagged templates are stored in a template store.  The recognizer compares the speech pattern from a given user of a second utterance of a word for which a flagged template is already stored in the template store with the templates stored in the reference template store and with the flagged templates in the template store, so as to produce a second flagged template of that word.  The second flagged templates are also stored in the template store.  Sifting means analyze a group of flagged templates of the same word, and produce therefrom a second, smaller group of templates of that word.  These templates are stored in another template store.
Patent CA-1293919-C (CA)
Title: Slat shade operator
Inventor: EVERS ROBERT S
IPC: E06B9/32
Filed: 1988-09-20
Granted: 1992-01-07
Abstract: ABSTRACT OF THE DISCLOSURE     A between-the-glass slatted blind operator includes an enclosure having a housing and a bottom wall.   All of the gears are contained in the housing and the bottom wall is placed over the top of the gears when the operator is being assembled and being locked in place by inwardly deflected tabs on the housing side walls.  The bottom wall has upwardly extending gear supports which oppose the gear supports in the housing.  The bottom wall is unexposed to view when the operator is in its position of use.
Patent CA-1301846-C (CA)
Title: Decoding of signals using cophase and differentiating signal detection
Inventor: VANESS DAVID W
IPC: H04L27/26
Filed: 1988-11-10
Granted: 1992-05-26
Abstract: DECODING OF SIGNALS USING COPHASE AND DIFFERENTIATING SIGNAL DETECTION        Abstract of the Disclosure The disclosed decoder (14) produces an output signal when a receiver (12) signal contains frequencies that are sequentially within a predetermined passband surrounding detection frequencies f1 and f2. The receiver signal is mixed at exclusive-OR logic gates (52, 54) with cophase reference signals R1 and R2, which are produced by a reference tone generator (18) and have a frequency fr that corresponds to the desired tone detection frequency f1 or f2 and a phase difference of 90°. The outputs of gates (52, 54) are applied to low pass filters (56, 58), which produce outputs having a frequency of equal to the absolute value of the difference between the input and reference frequencies fi and fr, provided that .DELTA.f is below the filter's cutoff frequency fc1. A cophase detection circuit (60, 62, 64, and 66) produces a high logic output when signals are passed by filters (56, 58), indicating that the frequency of the receiver signal differs from the desired tone detection frequency by less than fc1. To further enhance the accuracy of tone detection, a differentiating tone detection arrangement (68 through 84) is provided to determine whether .DELTA.f is less than some second cutoff frequency fc2 or greater than fc1. Two differentiating circuits (68, 70) receivethe outputs of filters (56, 58) and produce bidirectional square waves having magnitudes corresponding to .DELTA.f. These square waves are then compared with some predetermined threshold to produce an output only when .DELTA.f is below fc2 or above fc1. The cophase and differentiating tone detection outputs are combined to produce an output when a tone corresponding to the detection frequency f1 or f2 has been detected.
Patent CA-1323385-C (CA)
Inventor: MCGUCKIN JAMES S
IPC: A63B69/40
Filed: 1988-11-23
Granted: 1993-10-19
Abstract: ABSTRACT           The present invention relates to a resilient practice ball comprising at least two regions with respect to deformation upon impact with a surface.  An elongated band forms one region and subdivides the ball into two other areas to opposite sides of the band comprising the second region.  Said band is several times stronger with respect to deformation upon impact than said second region, such that the rebounding characteristics of the ball are dependent upon the area of the ball which impacts upon the surface.  The ball of the present invention can be used in a number of different modes to practice different reflex skills.  Thus, it may be thrown back and forth between two players as in regular practice to develop their skills at catching an erratically thrown ball.  It may also be tethered to a short resilient tether such that upon being swung vertically by an operator and striking the ground it rebounds erratically in simulation of a bad hop to improve reflex action in fielding.  In a further mode of operation while tethered to a longer tether, it may be swung in a horizontal direction by a pitcher such that a batter may practice batting.
Patent CA-1316895-C (CA)
Title: Magnetic socket and tool holder
Inventor: ANDERSEN TIMM
IPC: B25H3/00
Filed: 1988-12-06
Granted: 1993-04-27
Abstract: ABSTRACT OF THE DISCLOSURE      A pair of elongated parallel and laterally spaced apart armature plates are provided between which a plurality of permanent magnets are mounted in positions spaced along the plates and the plates are constructed of ferrous material.  One pair of corresponding longitudinal side edges of the plates may be engaged with a ferrous object for support of the plates and magnets therefrom and the other pair of corresponding side edges of the plates may have tools such as sockets supported therefrom and removably magnetically attracted thereto.  A positioning or abutment plate paralleling the armature plates and spaced slightly outward of the side of one of the armature plates remote from the other armature plate is included on the holder and the marginal portion of the positioning plate corresponding to the second pair of corresponding edges of the armature plates extends appreciably edgewise outwardly therebeyond and may be abutted by the opposing surfaces of the sockets supported from the second pair of corresponding edges of the armature plates, the positioning plate being constructed of non-ferrous material.
Patent CA-1299628-C (CA)
Inventor: ASAHINA TAKASHI
IPC: B01F15/06
Filed: 1988-12-28
Granted: 1992-04-28
Abstract: Abstract A heating and cooking apparatus has a kneading trough detachably installed in a heating chamber of the apparatus.  The trough has a handle for easy carrying by a user.  Both the trough and a mounting portion to be engaged by the trough in the heating chamber are non circular, e.g. rectangular.  As a result, the force in the direction of rotation during operation can be positively received corners, thus enhancing the strength of the apparatus, and avoid rattling, wear or disengagement of the parts.
Patent CA-1318161-C (CA)
Title: Miniature integrated optical beam splitter
Inventor: LEE TIEN-PEI
IPC: G02B6/125
Filed: 1989-01-18
Granted: 1993-05-25
Abstract: ABSTRACT     A minature integrated optical beam splitter comprises a pair of perpendicular intersecting ridge waveguides and a groove extending at an angle of 45 across the intersection of the waveguides, the depth of the groove extending below the ridge and into the waveguide layer to obtain the desired percentage of beam splitting.
Patent CA-1319818-C (CA)
Title: Rotary mace adapter block
Inventor: VANDERJAGT ADRIAN D
IPC: B02C13/28
Filed: 1989-01-24
Granted: 1993-07-06
Abstract: ABSTRACT OF THE DISCLOSURE       An improved rotary mace for striking off extraneous transient projection from, e.g., ferrous castings, the mace having a hub, at least one hammer and means for pivotably securing each of the at least one hammers to the hub, the improved means for securing the hammers including an adapter block for the hammers, each adapter block being removably fixedly attached to a peripheral face of the hub and the hammer being removably pivotably attached to the adapter block, e.g., by a clevis  Preferably, each hammer is supported upon a respective adapter block and each adapter block is provided with means for holding resilient bumper means positioned to receive the impact of the pivotable hammer at either maximal pivotable position.  The novel adapter block also has secure fastening means for releasably securing the means for pivotably attaching each hammer.
Patent CA-1299665-C (CA)
Title: Recepteur pour systeme de transmission par voie hertzienne a diversite d'espace
Inventor: LE POLOZEC XAVIER
IPC: H04B1/16
Filed: 1989-03-17
Granted: 1992-04-28
Abstract: PRÉCIS DE LA DIVULGATION:: Recepteur pour système de transmission par voie hertzienne à diversité d'espace, comprenant un combineur de diversité et un dispositif de commande de diversite, ainsi qu'un egalisateur auto-adaptatif dans la chaine de réception. Le dispositif de commande de diversité comprend un dispositif de calcul saisissant les coefficients de l'égali~eur auto-adaptatif et établissant une valeur de distorsion à partir de ces coefficients, en vue de commander en fonction de catte valeur de distorsion le comblneur de diversité.
Patent CA-1313357-C (CA)
Title: Intermediate plate positioner means for a friction clutch assembly
Inventor: FLOTOW RICHARD A
IPC: F16D13/69
Filed: 1989-03-31
Granted: 1993-02-02
Abstract: ABSTRACT OF THE DISCLOSURE    An intermediate plate positioner means for a multiple disk friction clutch assembly is disclosed.  A plurality of apertures are formed about the periphery of the intermediate plate.  A positioner pin is inserted in each of the apertures extending between the flywheel and the cover of the  clutch assembly.  Each positioner pin is sized relative to its respective aperture so as to provide an interference fit therebetween.  The force required to axially slide each positioner pin through its respective aperture is predetermined to be less than the force generated by clutch springs, which urge the clutch assembly toward an engaged position, but greater than the force exerted by the drive straps of the clutch assembly, which urge the intermediate plate toward a disengaged position. As the friction faces of the clutch assembly wear thinner during use, the position of the intermediate plate relative to the clutch cover in the disengaged position is varied by engagement of the positioner pins with the flywheel clutch cover.
Patent CA-1340061-C (CA)
Inventor: STUEBER WERNER
IPC: C12Q1/56
Filed: 1989-04-06
Granted: 1998-09-29
Abstract: A method for the detection and for the determination of blood coagulation factor XIII in plasma, as well as a kit containing means which can be used in this method, are described. Used in this method are a fibrin-aggregation inhibitor, thrombin, a glutamine-containing peptide as substrate for factor XIII, an amine and a system for detecting ammonia which is formed. The kit containing means which can be used in this method contains a fibrin-aggregation inhibitor and a glutamine-containing peptide, where appropriate in addition to other components necessary for the method.
Patent CA-1313582-C (CA)
Title: Fire expansion joint for ceiling runner
Inventor: OLLINGER JAMES C
IPC: E04B9/08
Filed: 1989-05-01
Granted: 1993-02-16
Abstract: FIRE EXPANSION JOINT FOR CEILING RUNNER               Abstract of the Invention The expansion joint for the runner is formed with two cut-out areas and cuts in the vertical web to permit the horizontal web, enlarged bulb and remaining web by the cut-out aeas to bend outward to absorb expan-sion of the runner when subjected to fire.
Patent CA-1317802-C (CA)
Title: Method for measuring the rotation of an assymetric contact lens
Inventor: HAHN PAUL
IPC: G02C7/04
Filed: 1989-06-05
Granted: 1993-05-18
Abstract: ABSTRACT           A contact lens comprising a corneal section, a vertical axis, and a shape adapted to maintain the lens at an intended orientation.  The lens has either a visible horizontal line segment located in the corneal section perpendicular to the vertical axis and/or three visible radial line segments in the corneal section, the first of the line segments located on the vertical axis, and the second and third segments located on either side of the first segment such that the extensions of the segments would pass through a geometric center of the corneal section forming two 20° angles.  The lens is useful for measuring the rotation of an assymetric lens.  Methods for measuring lens rotation using the inventive lenses are also disclosed.
Patent CA-1339510-C (CA)
Title: 1-olefin isoblock polymer and process for its manufacture
Inventor: DOLLE VOLKER
IPC: C08F4/643
Filed: 1989-07-28
Granted: 1997-10-21
Abstract: 1-Olefin isoblock polymer and process for its manufacture Isoblock polymers of 1-olefins with a narrow molecular weight distribution are obtained when 1-olefins are polymerized using a catalyst consisting of a chiral metallocene, containing bridges, of formula I:     (see fig. I) and an aluminoxane.  The polymers have rubber-like properties.
Patent CA-1331153-C (CA)
Inventor: LAFEVER EDWARD E
IPC: F01L3/08
Filed: 1989-08-18
Granted: 1994-08-02
Abstract: Title METERING VALVE STEM SEAL Abstract of the Invention A valve stem seal provides an elastomeric main valve body having an upper working portion and a lower support portion, the latter for support of the seal on a valve guide member.  The seal contains a central helically threaded internal region adapted to meter  oil  flow  between  the  valve  guide  and  a  valve  stem reciprocally moveable with the guide.  The upper working portion defines a pair of ends, wherein each end contains a non-threaded internal portion defining a plurality of alternately arranged axially extending   grooves and ribs.   The grooves provide oil flow passageways, while the ribs support the ends of the working portion against the reciprocal valve stem member.  In a preferred form,  the   non-threaded  internal  portions  have  axial  lengths within a range of one-tenth to one-third the axial length of the central threaded region.
Patent CA-1340921-C (CA)
Inventor: LAWYER FRANCES C
IPC: C12N15/70
Filed: 1987-07-17
Granted: 2000-03-07
Abstract: A purified thermostable enzyme is obtained that has unique characteristics. Preferably the enzyme is isolated from the Thermus aquaticus species and has a molecular weight of about 86,000-90,000 daltons. The thermostable enzyme may be native or recombinant and may be used in a temperature-cycling chain reaction wherein at least one nucleic acid sequence is amplified in quantity from an existing sequence with the aid of selected primers and nucleoside triphosphates. The amplification process comprises treating separate complementary strands of the nucleic acid with a molar excess of two oligonucleotide primers, extending the primers with a thermostable enzyme to form complementary primer extension products which act as templates for synthesizing the desired nucleic acid sequence, and detecting the sequence so amplified. The steps of the reaction can be repeated as often as desired and involve temperature cycling to effect hybridization, promotion of activity of the enzyme, and denaturation of the hybrids formed. The enzyme is preferably stored in a buffer of non-ionic detergents that lends stability to the enzyme.
Patent CA-1335293-C (CA)
Title: 5-alkyl-tetramic acids and process for their production
Inventor: MEUL THOMAS
IPC: C07D207/38
Filed: 1989-08-29
Granted: 1995-04-18
Abstract: A process is disclosed for the production of 5-alkyl tetramic acids,  some of which are novel,  from 4-alkoxy-3-pyrrolin-2-ones  and  aldehydes  or  ketones.    By basic  catalysis,  5-alkylidene-4-alkoxy-3-pyrrolin-2-ones are  first  formed,  which  are  converted  into  the  target compounds by cleavage of the alkoxy group and catalytic hydrogenation.
Patent CA-1329572-C (CA)
Inventor: ANTOON MITCHELL K JR
IPC: B65D65/38
Filed: 1989-09-15
Granted: 1994-05-17
Abstract: Abstract of Disclosure A container providing controlled atmospheric storage of produce (i.e., fresh fruits, vegetables and flowers) to improve retention of product freshness by adjusting the carbon dioxide to oxygen ratio, for the storage of said produce, can be attained and maintained, thereby retarding premature maturation and spoilage.  The environment is controlled by providing a microporous membrane panel of a uniaxially or biaxially oriented microporous polyolefin coated with a cured silicone elastomer, said panel being of limited carbon dioxide and oxygen permeance on an otherwise substantially impermeable container.  The size of the area of the panel is a function of its permeance, the amount and respiration rate of the contents, and the ratio of carbon dioxide to oxygen desired.
Patent CA-1336271-C (CA)
Inventor: AHVENAINEN JUHA
IPC: C12C7/047
Filed: 1989-09-26
Granted: 1995-07-11
Abstract: The invention relates to a process for the production of beer by fermenting wort comprising malted barley and a concentrated starch solution derived from barley,  for example,  in the form of a side fraction from a barley starch process, or a barley syrup derived from such fraction.
Patent CA-1321780-C (CA)
Title: Packaging apparatus and method
Inventor: LERNER BERNARD
IPC: B65B43/12
Filed: 1989-09-28
Granted: 1993-08-31
Abstract: Packaging Apparatus and Method Abstract of the Disclosure A packaging machine and method for simultaneously loading, sealing and severing bags forming parts of at least two independent chains of bags.  Two juxtaposed nip roll assemblies including axially aligned feed roll portions can be independently actuated in order to selectively feed one or two webs.  A drive motor, having a dual output, is selectively coupled to the nip roll assemblies by clutch/brake units which can be selective-ly actuated.  After a bag or bags are loaded, a sealing mechanism is actuated to seal the loaded bag or bags. sensor monitors movement in a seal unit member and ter-minates the sealing cycle if movement in the seal member occurs prior to a pressure bar reaching a predetermined position.  While a bag or bags are being sealed, a tear off mechanism including a rod-lika member is advanced into and through the web path in order to sever the loaded bag from the remainder of the web.   Actuators operatively connected to distal ends of the member are actuated sequentially in order to move one end of the rod into contact with the web before the other end makes contact.  As a consequence, severance of a bag along a line of weakness begins at one marginal edge of the tag and proceeds towards its opposite marginal edge.  In an alternate embodiment, the stepper motor drive is used to advance bags to a loading station and when using loading funnels, are used to retract the bag in order to have a mouth of the bag engage a loading funnel. In addition, the stepper motor drive can be used to sever loaded bags from the remainder of the web by reverse feeding the webs either concurrently or in a staggered relationship.