baber/WOPTO huggingface dataset:
Patent CA-1040332-A (CA)
Inventor: ANDERSEN BJORN
IPC: H04M9/00
Filed: 1975-10-21
Granted: 1978-10-10
Abstract: ABSTRACT OF THE DISCLOSURE A system for control of speech direction in duplex telephone circuits (e.g. hands-free telephone), derives a switching control signal proportional to both the immediate transmit-channel signal value and a Regulating Value which is the ratio of the Receive-Channel Signal to the Transmit-Channel Signal under no-local-sound-source condition.  Thus the Regulating Value is proportional to the local acoustic feedaround (Overhearing) signal between local loudspeaker to microphone.  The Regulating Value responds to faster variations (caused by speech) to cause direction-switching, but merely compensates for slower variations (caused by movement of people or microphone in the local room).  Switching (Breakthrough) of the microphone to On and the loudspeaker to Off also depends on the magnitude of the closed-channel (non-corrected) microphone signal exceeding that of the open channel.
Patent CA-1037559-A (CA)
Inventor: FRAENZL ALOIS
IPC: B30B11/08
Filed: 1975-11-06
Granted: 1978-08-29
Abstract: ABSTRACT OF THE DISCLOSURE     Battery cell cups are filled with compressed depolarizer mass by performing a plurality of mass insertion and compression strokes for each cup.  In the first stroke, a mass plug remaining from the compression strokes for the preceding cup is introduced into the cell.  Overdosage leaves a mass plug for the next cup. A rotary machine performs the successive strokes at work stations spaced around the periphery.  Numerous cups can be processed simultaneously by the machine.        Automatic control of stroke pressure is provided.
Patent CA-1076286-A (CA)
Inventor: LUNDBERG ROBERT D
IPC: C08L23/32
Filed: 1975-11-17
Granted: 1980-04-22
Abstract: (U.S. 524,512) ABSTRACT OF THE DISCLOSURE This invention relates to blends of sulfonated elastomers with crystalline polyolefins. The sulfonated elastomer comprises from about 0.2 to about 20 mole percent sulfonate groups, at least 95% of which are combined with metal counter ions selected from the group consisting of Groups I and II of the Periodic Table of the Elements, aluminum, and lead; organic amines; and mixtures thereof. The crystalline polyolefin is preferably selected from the group consisting of polyethylene, including high and low density polyethylenes, and polypropylene. The crystalline polyolefin comprises a minor portion of said blends.  The blends have diverse applications, eg. they have excellent infection molding and extrusion properties.  Thus molded shoe soles, automobile parts and extruded articles such as garden hoses may be prepared.
Patent CA-1039202-A (CA)
Inventor: FLETCHER MAURICE C
IPC: B62D35/00
Filed: 1975-12-22
Granted: 1978-09-26
Abstract: Abstract of the Disclosure A  conventional size automobile having lightweight monocoque construction with the outer skin shaped to form a clean external body envelope.  Forces due to air flow around the body shape are used to stabilize the designed vehicle load at desired speeds.  The angle of attack of the body through the air can    be regulated by individual adjustment at each of the four wheels in the vertical position of the vehicle body.  Unsprung weight is reduced by providing individual hydraulic drive on each of the four wheels.  The hydraulic drive system also operates as a braking system.
Patent CA-1079740-A (CA)
Inventor: SPIETSCHKA ERNST
IPC: C09B7/10
Filed: 1976-02-05
Granted: 1980-06-17
Abstract: Abstract of the Disclosure:      Thioindigo and its derivatives are obtained in high yield and excellent purity by oxidizing corresponding 3-hydroxy-thionaphthenes with peroxo-disulfate in an aqueous alkaline solution.
Patent CA-1065997-A (CA)
Title: Alkyd resin manufacturing process by using water or steam to reverse or retard gelation
Inventor: CALLAHAN WILLIAM B
IPC: C08G63/48
Filed: 1976-03-09
Granted: 1979-11-06
Abstract: ABSTRACT OF THE DISCLOSURE         An improved alkyd resin manfacturing process in which the alkyd resin is prepared by esterifying a poly-basic acid and a polyhydric alcohol under reaction temper-ature conditions and water from the esterification is re-moved from the process; in the event gelation of the alkyd resin occurs in the process, the improvement that is used is the addition of sufficient water or steam while the alkyd rosin is maintained at about reaction temperature conditions to reverse the gelation of the alkyd resin to form a gel-free liquid composition of the alkyd resin. Also, water or steam can be used in an alkyd resin manu-facturing process to prevent or retard gelation of the resin.          Alkyd resins are widely used in paints and varnishes which are used for finish for wood, metal, polymer reinforced fiberglass and the like.
Patent CA-1049128-A (CA)
Inventor: TANG CHUNG L
IPC: H01S3/20
Filed: 1976-03-31
Granted: 1979-02-20
Abstract: ABSTRACT OF THE DISCLOSURE          A method and apparatus is described which allows a cw dye laser to be tuned over hundreds of angstroms on a nano-second time scale in spite of the relatively long cavity decay and build up time.  A tuning element is positioned at the mid-point between the reflective mirrors that define the length of the cavity.
Patent CA-1063789-A (CA)
Inventor: DUPRE JEAN
IPC: C08L35/00
Filed: 1976-05-03
Granted: 1979-10-09
Abstract: ABSTRACT OF THE DISCLOSURE    This invention provides a viscous, aqueous, alkaline drilling fluid, substantially free of clay, comprising a mixture of (a) 10-90 parts by weight of an addition polymer of an unsaturated carboxylic acid, the polymer having a molecular weight of 125,000-12,000,000, and (b) 10-90 parts by weight of a water soluble polysaccharide.  The fluid may be used in amounts less than about 5 pounds per barrel (ppb) of 42 U. S. gallons of aqueous liquid as contrasted with 25-35 ppb of clay in conventional systems.
Patent CA-1044552-A (CA)
Title: Procede et dispositif pour la realisation d'un nouveau type de structure filtrante pour filtres a cigarettes, filtres obtenus et cigarettes equipees de ce filtre
Inventor: GOAVEC ERNEST
IPC: A24D3/04
Filed: 1976-06-18
Granted: 1978-12-19
Abstract: L'invention concerne un procédé pour confectionner des filtres  à  cigarettes de haute efficacité en formant un nouveau type de structure filtrants  à  parti d'une nappe de matière fibreuse, cette nappe étant conformée en boudin cylindrique selon un mode deconformation géométrique connu. Ce procédé est caractérisé en ce que l'on met en oeuvre une nappe de matière fibreuse transversalement crêpée, possédant des propriétés absorbantes via-à-vis des produits de la fumée du tabac et que l'on imprime sur certaines plages de cette nappe un relief du genre gaufré, de façon  à  obtenir sur cette nappe deux matériaux différents, après quoi rassemble sous la forme d'une pile, ladite pile étant ensuite conformée géométriquement en un boudin cylindrique de structure homogène.
Patent CA-1076607-A (CA)
Inventor: BRYANT DAVID R
IPC: C07C29/151
Filed: 1976-09-29
Granted: 1980-04-29
Abstract: ETHYIENE GLYCOL EXTRACTION PROCESS               ABSTRACT OF THE DISCLOSURE           There is described a process of extracting ethylene glycol from admixture with tetraglyme containing rhotium values therein using glycerine as the extraction solvent.                     S P E C I F I C A T I O N   1.
Patent CA-1089643-A (CA)
Inventor: MIKOLAS EUGENE A
IPC: G03G15/09
Filed: 1976-11-03
Granted: 1980-11-18
Abstract: A development system in which a powder pattern is formed on a photoconductive surface.  The development system includes a particle transport, operable for a variable selective duration of time, for advancing the particles. A magnetic brush developer roller receives the particles from the particle transport and applies the particles to at least a portion of the photoconduc-tive surface.  When the particle transport is inoperable, the magnetic brush developer roller removes extraneous particles from the photoconductive surface.  An electro-magnet is operatively associated with the magnetic brush developer roller to remove particles therefrom. The electromagnet is operable in response to the particle transport being inoperable.
Patent CA-1089961-A (CA)
Inventor: GOLDIE HARRY
IPC: G01S7/03
Filed: 1976-11-16
Granted: 1980-11-18
Abstract: ABSTRACT OF THE DISCLOSURE An FM/CW radar system which uses a single duplexed antenna, in which high degree of isolation of the transmission signal from the receiver is provided by passive power limiter devices employing the subsidiary resonance mode of narrow linewidth ferrite materials.  In devices which are magnetically biased for operation in the subsidiary resonance mode, strong r.f. fields resonantly couple to spin waves, thus causing power absorption for signals at the frequency of incidence which exceed predetermined threshold. A signal exceeding the threshold is attenuated over a narrow band at the frequency of incidence while the weak FM/CW target echo return signals are transmitted to the receiver with very low loss, provided their frequency displacement is of the order of 15 MHz from the frequency of incidence.
Patent CA-1067641-A (CA)
Inventor: HOMAN GARY R
IPC: C08L83/04
Filed: 1976-12-02
Granted: 1979-12-04
Abstract: Abstract of the Disclosure Mixing a polydimethylsiloxane having terminal vinyl or silacyclopentenyl groups, a mercapto-organopolysiloxane and an organic peroxide provides a composition which cures to an elastomer at room temperature or by heating.  The elastomers are useful as sealants and to produce silicon rubber articles.
Patent CA-1092136-A (CA)
Inventor: VINCENT MICHEL
IPC: C07D295/14
Filed: 1976-12-02
Granted: 1980-12-23
Abstract: La présente invention se rapporte à un procédé d'obtention des composes de formule générale I: I dans laquelle X1 et X3 représentent simultanément ou distinctement, un radical alcoyle inférieur, un radical alcoxy inférieur ou un radical alcoylthio inférieur; X2 et X4 simultanément ou distinctement représentent de l'hydrogène ou un radical alcoyle inférieur; A et B représentent, simultanément ou distinctement, un halogène, un alcoyle inférieur ou un radical alcoxy inférieur; n et n' sont des nombres entiers variant de 0 à 3; Y et Z, simultanément ou distinctement, sont de l'hydrogène, un radical alcoyle inférieur en chaîne droite ou ramifiée, ou forment une chaîne alcoylène avec R4 ayant de 4 à 6 atomes de carbone; R4 représente de l'hydrogène, un radical alcoyle inferieur, un radical alcényle inférieur ou un radical benzyle; R5 représente un radical alcoyle inférieur, alcényle inférieur, aralcoyle inférieur; ou bien R4 et R5 forment ensemble une chaîne alcoylène ayant 4 ou 5 chaînons, dans laquelle un groupe méthylène peut être remplace par un groupe imino              dans lequel R est de l'hydrogène, un alcoyle inférieur, un acyloxy alcoyle inférieur ou un alcoxy alcoyle inférieur ou un hydroxy alcoyle inférieur, caractérisé en ce que l'on condense un acide di-aryl acétique de formule générale II: II dans laquelle la définition des substituants A, B, X1, X2, X4, n et n' demeure inchangée, ou un derivé fonctionnel de celui-ci, avec une éthylène diamine de formule générale III: III dans laquelle les substituants Y, Z, R4 et R5 sont définis comme précédemment, pour obtenir un diarylacétamide de formule générale I. Les composés obtenus selon le procédé de l'invention peuvent se présenter sous forme de base ou sous forme de sels. Lorsque la molécule comporte un atome de carbone asymétrique, ils peuvent être dédoublés en leurs isomères optiques. Les composes obtenus selon le procédé de l'invention sont des médicaments précieux, notamment comme agents anticonvulsivants dans le traitement de l'epilepsie.
Patent CA-1098726-A (CA)
Inventor: KIRFEL HANSKARL
IPC: C07C69/76
Filed: 1976-12-03
Granted: 1981-04-07
Abstract: Bayer 3033-PFF              SELECTIVE HERBICIDAL AGENTS                   Abstract of the Disclosure Synergistic herbicidal combinations comprising: (a)  3-(p-chlorophenyl)-2-chloropropionic acid methyl ester, of the formula                 (I), and at least one of (b)  a surfactant component comprising at least one agriculturally acceptable surface-active agent (c)  an oil component comprising at least one agricul-turally acceptable mineral oil alone or in admixture with a solid or liquid or liquefied gaseous diluent or carrier.         The surfactant is preferably chosen from (A)  sorbitol fatty acid esters and polyoxyethylene sorbitol fatty acid esters (B)  polyoxyethylene alkyl (or arylalkyl) ethers, and alkylpolyglycol ethers; and (C)  silicone based surfactants and the compositions preferably contain all three components (a), (b) and (c).            Le A 16 814
Patent CA-1039742-A (CA)
Inventor: DELATTRE JACQUES
IPC: C07C69/82
Filed: 1976-12-15
Granted: 1978-10-03
Abstract: L'invention concerne un nouveau procédé de transformation de téréphtalate de bis (diol) en téréphtalate de diméthyle.  Il est effectué par interéchange en milieu méthanolique, en présence de méthylate de magnésium comme catalyseur.  Le procédé permet la régénération de téréphtalate de diméthyle à partir de déchets de fils ou films en polytéréphtalates ou copolytéréphtalates pour fabriquer des polytéréphtalates ou copolytéréphtalates utilisables pour la fabrication de fils ou films par exemple.
Patent CA-1180813-A (CA)
Inventor: MOSHIER STEPHEN L
IPC: G10L15/10
Filed: 1976-12-29
Granted: 1985-01-08
Abstract: ABSTRACT OF THE DISCLOSURE         In the speech recognition apparatus disclosed herein, an audio signal is digitized and a succession of short-term power spectra are generated over a time interval corresponding to a spoken word.  The short-term power spectra are frequency band equalized as a function of the peak amplitude occurring in each frequency band over the word interval.  The changes in amplitude in each frequency band are weighted and summed to obtain a cumulative measure of subjective time and then a limited number of frequency band equalized spectra are selected as representing equal intervals of subjective time so as to supress variations in rate of articulation.  The selected spectra are then non-linearly scaled in amplitude and transform-ed so as to maximize the separation between phonetically different sounds.  By means of a maximum-likelihood method, the transformed selected spectra are compared with a data base representing a vocabulary to be recognized.
Patent CA-1077315-A (CA)
Inventor: WHITNEY DONALD B
IPC: G02C7/02
Filed: 1977-02-14
Granted: 1980-05-13
Abstract: ABSTRACT OF THE DISCLOSURE          Corrected ophthalmic lenses wherein off-axis correction is accomplished with a gradation of index of refraction between optical center and edges of the lenses together with proper control of surface curvature and center thickness.          Utilizing regular spherical and/or toric lens surfaces of preselected dioptric values, off-axis corrections of lens aberrations comparable to and improved over those which may be accomplished with aspheric surface design are possible.          The relatively complex and expensive processes of applying aspheric corrections to glass lenses can be avoided without sacrifice of oblique correction quality.  In this connection, a lens base curve may be chosen so as to minimize astigmatism and a refractive index gradient used to control curvature of field.  Still higher degrees of correction are contemplated by using an index gradient along with an aspheric surface and, with careful selection of base curve.  Base curve selection may be made with reduction of distortion in mind, asphericity chosen to minimize astigmatism and a refractive index gradient utilized to reduce curvature of field (power error).
Patent CA-1080072-A (CA)
Inventor: GOTTFRIED MAX
IPC: A61F5/058
Filed: 1977-03-01
Granted: 1980-06-24
Abstract: TITLE OF THE INVENTION           INFLATABLE ANTI SHOCK AND SPLINTING TROUSERS                      ABSTRACT OF THE DISCLOSURE Several embodiments of inflatable trousers and their auxiliary equipment are disclosed whereby the trousers are flatted in a controlled and precise manner.  The form of the garment facilitates application to an infirmed individual by having a front and rear panel which are integral along the inseam of the legs, are separate at the top of an abdominal region, the region of the parineum and at the bottoms of the legs, and are separable along the outer side margins from the top to the bottoms of the legs.  Fasteners such as slide fasteners are provided for selective closure along the outer side margins of thegarment.  One or more inflatable chambers are located within the garment to ex-tend over substantial regions thereof and impose pressure over the enclosed body portion as the entire enclosed abdominal area and both legs or, selectively, the respective legs and an abdominal region.  A relatively rigid outer reinforcing panel militates against ballooning in the abdominal region.  Selective valving between the chambers and the exterior of the garment enables gas pressure adjustments within the respective chambers as where treatment as where requires access to a leg or the lower abdomen.  Aneroid guage couplings and bleed valves either in the pressurizing gas lines or in separate conduits to the chamber interiors facilitate precise adjustment of pressures.  Color coding of controls, guages and conduits and/or their couplings facilitate utilization of polychambered garments.
Patent CA-1095074-A (CA)
Inventor: WEITZ HANS M
IPC: C07D307/08
Filed: 1977-03-16
Granted: 1981-02-03
Abstract: O.Z. 31,903 ABSTRACT OF THE DISCLOSURE: In a process for the manufacture of butenediol-dicarboxylic acid esters by reacting butadiene with oxygen and a carboxylic acid in the presence of a noble metal catalyst containing platinum or palladium, the carboxylic acid is added to the reaction mixture in the form of the ester of the acid with a low molecular weight aliphatic alcohol such as methanol and the reaction is carried out under conditions under which the ester undergoes hydrolysis, or the hydrolysis is carried out before the main reaction. This enables the carboxylic acid obtained on further processing of the butenediol esters to be recycled.
Patent CA-1078056-A (CA)
Inventor: CYR REGINALD J
IPC: G01S15/74
Filed: 1977-03-28
Granted: 1980-05-20
Abstract: ABSTRACT OF THE DISCLOSURE          An arrangement for determining the relative three dimensional positional relationship, including the horizontal separation, location, and orientation between a plurality of underwater transponders.  A plurality of underwater transponders are positioned adjacent the bottom of the body of water and the number of the plurality of transponders for an unambiguous determination comprises at least three.  In one embodiment, each of the trans-ponders is provided with structure to receive a first interrogation frequency signal and generate a unique output signal in response thereto.  Additionally, a first of the transponders also is provided with structure to generate the first interrogation frequency signal in response to a second interrogation frequency signal.  A second of the plurality of transponders is provided with structure to generate the first interrogation frequency signal in response to a third interrogation frequency signal.  A base station which, for example, may be a ship located at first location on the surface of the water within signal range of each of the transponders has structure for generating each of the first, second and third interrogation frequency signals in a predetermined sequence.  The time period from transmission of each interrogation signal to receipt of the unique output signals from each of the plurality of transponders is measured.  The depth below the surface of the water of at least two of the plurality of transponders is measured and from the measured values, the true three dimensional positional relationship be-tween the transponders is uniquely determined.  By moving the ship to a second location and repeating the signal transmissions and time measurements, the orientation of the array with respect, for example, to the earth's magnetic field may be determined.  The time period for the measurements is comparatively short - on the order of one minute or so.  If desired, the first and second transponders which may be termed calibration transponders, may be removed from the array after the absolute value of the three dimensional positional relationship between the transponders and/or the orientation has been determined.  The absolute geodetic position may be determined by utilization of an external reference system.
Patent CA-1094121-A (CA)
Title: Device for holding a boot to a sports article
Inventor: SALOMON GEORGES P J
IPC: A63C9/08
Filed: 1977-04-27
Granted: 1981-01-20
Abstract: ABSTRACT OF THE DISCLOSURE           A device for holding an object (such as a boot) to a means of support (such as a ski) is provided with resilient means to furnish energy to hold the object to the means of support, the resilient means having two parallel pivoting parts spaced from each other and housed in the means of support, these pivoting parts being united by a resiliently deformable loop.
Patent CA-1060788-A (CA)
Inventor: CLAMPITT RICHARD L
IPC: E21B43/24
Filed: 1977-05-02
Granted: 1979-08-21
Abstract: IMPROVED FIRE FLOOD PROCESS                     Abstract of the Disclosure In an underground in situ combustion process for the recovery of oil from formations having high permeabilities, after combustion has been initiated, water containing a surfactant and air are injected under condi-tions such that the water upon contact with the hot formation vaporizes, creating slugs of condensible foam in an amount sufficient to generate a significant resistance factor of at least 5, which improves volumetric sweep efficiency by retarding the mobility of the steam and subsequent slugs of air.  Air and water, including a surfactant, can be injected simultaneously as a mixture or as alternate slugs of water containing a surfactant and air.
Patent CA-1096222-A (CA)
Inventor: FORD JOHN A JR
IPC: C09B33/04
Filed: 1977-05-09
Granted: 1981-02-24
Abstract: ELECTROGRAPHIC LIQUID DEVELOPERS CONTAINING          AZO DYE MARKING PARTICLES                    Abstract of the Disclosure An electrographic liquid developer comprising a carrier liquid and a marking particle which comprises a dye compound having the formula:       wherein:      R1 is H, COOH, CONH2,     -S02NH2 or -S03M where M is Na+ or NH4;         R2 is a lower alkoxy radical, -OCH2CONH2, or   where each of R6 and R7 is a lower alkyl radical; and R3 is H, a lower alkyl radical, a lower alkoxy radical or N02.
Patent CA-1095991-A (CA)
Title: Frequency-modulated data communications receivers
Inventor: GAMMEL JOSEF
IPC: H04L27/14
Filed: 1977-06-02
Granted: 1981-02-17
Abstract: ABSTRACT OF THE DISCLOSURE   A frequency modulated-data communications receiver for use in a system where digital signals are used to frequency modulate a carrier is disclosed.  Any information loss caused by phase or amplitude distortion is detected automatically in two mutually supplementary arrangements.  One supplementary arrangement is in the form of a dynamic distortion corrector including a frequency discriminator and the other is in the form of a static distortion corrector comprising an amplitude demodulator connected in parallel with the frequency discriminator.  The outputs of the demodulator and dis-criminator are connected to respective inputs of a change-over switching cir-cuit under the control of an amplitude modulation-analysis device.  When this device senses that the amplitude modulation level exceeds a given value it causes switching of a common output to the amplitude demodulator and when an excess frequency modulation level is sensed the common output is switched to the frequency discriminator.  The output of the amplitude demodulator is followed by an inverter which operates under control of a polarity integrator to reverse the AM-demodulation product depending on the magnitude of the FM-demodulation product, in the sense to give AM-demodulation of correct polarity.