baber/WOPTO huggingface dataset:
Patent CA-1144793-A (CA)
Inventor: DEAN NOEL S
IPC: G02B1/00
Filed: 1981-01-23
Granted: 1983-04-19
Abstract: A B S T R A C T     In an optical communication cable for the transmission of light, the or each optical fibre is so housed that it is capable of limited movement relative to the cable when the cable is flexed, thereby reducing risk of fracture of the optical fibre.  The optical fibre is loosely housed in, and has a diameter less than the diameter of, a bore in an extruded elongate body of insulating material, which body has a transverse cross-sectional shape of elongate form.  The bore has a smooth continuous boundary wall and is of uniform transverse cross-section throughout its length.  To provide reinforcement for the cable, two separate elongate reinforcing members are embedded in the extruded body throughout its length and are arranged on opposite sides of and parallel to the bore.  Because limited movement of the optical fibre can take place within the cable, there is substantially no risk of fracture of or damage to the optical fibre during manufacture and installation of the cable and, as compared with optical communication cables hitherto proposed, the optical cable is simple and inexpensive because no unnecessary material is employed.
Patent CA-1151343-A (CA)
Inventor: EDELMAN ROBERT
IPC: C08G73/10
Filed: 1981-03-11
Granted: 1983-08-02
Abstract: Abstract of the Disclosure The present invention provides an improvement in a process for preparing polyimide compositions from a mix-ture of monomers by the application of heat in two stages. The improvement comprises incorporating a cyclic peroxyketal catalyst, such as 3,6,6,9,9,-pentamethyl-3-(ethylacetate)-1,2,4,5-tetraoxycyclononane, into the monomer mixture prior to reaction.
Patent CA-1147333-A (CA)
Inventor: HALL RICHARD E
IPC: C07D251/32
Filed: 1981-04-01
Granted: 1983-05-31
Abstract: Abstract: PRODUCTION OF A PURIFIED CYANURIC ACID DIHYDRATE   Anhydrous cyanuric acid containing amounts of occluded solvent is recrystallized to a purified cy-anuric acid dihydrate by slurrying the contaminated anhydrous cyanuric acid in an aqueous medium.
Patent CA-1154543-A (CA)
Inventor: MITCHELL MUNI M
IPC: H01L29/06
Filed: 1981-05-05
Granted: 1983-09-27
Abstract: MESH GATE V-MOS POWER FET            ABSTRACT OF THE INVENTION     A power, V-grooved MOSFET having V-grooves extending in two orthogonal dimensions, thereby forming a semi-continuous mesh grid configuration which maximizes the periphery of the MOSFET channels for a given area of silicon, thus providing higher output current and lower "on resistance" for a given area than a conventional, interdigitated V-MOS power transistor having V-grooves running in only one dimension.
Patent CA-1175652-A (CA)
Title: Slidable closure element for slide closures of  metallurgical vessels
Inventor: BAUER GERHARD
IPC: B22D41/08
Filed: 1981-05-15
Granted: 1984-10-09
Abstract: Abstract A slidable closure element for slide closures of metallurgical vessels is composed of a one-piece plate of heat resistant material which is engaged at its two opposite narrow edges by frame members that are drawn together by screws serving to tension them and hold them in contact with the edges of the plate.
Patent CA-1174633-A (CA)
Inventor: MICHALS RICHARD A
IPC: B41J3/26
Filed: 1981-05-20
Granted: 1984-09-18
Abstract: SHORTHAND MACHINE HAVING ELECTRIC PLATEN ADVANCEMENT     Abstract Of The Disclosure A shorthand machine including an electric drive sys-tem to advance the platen.  In accordance with the inven-tion, the platen can be advanced in a fully mechanical, conventional mode, fully electric mode, or by a combina-tion of electric and mechanical drives.  In the electric or electric/mechanical modes, after the shorthand machine operator makes a key stroke and releases the keys,  an electric circuit pulses an electric motor connected to the platen to drive the platen for a predetermined dura-tion of time.  Subsequent to the driving pulse, power to the motor  is  reversed  to quickly brake the motor and bring it to a rapid stop.  The duration of time that the motor is activated may be varied, varying the amount of advancement of the platen, and thus varying the distance between recorded key strokes for each word or part of word generated by the operator of the shorthand machine.
Patent CA-1156301-A (CA)
Inventor: KITAJIMA TOSHIO
IPC: H02K9/08
Filed: 1981-06-26
Granted: 1983-11-01
Abstract: ABSTRACT OF THE DISCLOSURE      A reverse flow cooled dynamoelectric machine is provided with an annular baffle disposed in the gap thereof and spaced from stator core laminations at the end region for improving the cooling of these laminations.          The baffle prevents heated gas flow from the end turn region of the rotor and gas from the cooling passages in the stator assembly from impinging in the gap.
Patent CA-1139153-A (CA)
Title: Valve assembly for high pressure  reciprocating pump
Inventor: PACHT AMOS
IPC: F04B53/16
Filed: 1981-06-26
Granted: 1983-01-11
Abstract: ABSTRACT OF THE DISCLOSURE      A high pressure fluid delivery system including an improved reciprocating pump is disclosed.  The pump has a liquid cylinder block, with a stuffing box mounted on one side and a suction manifold on the other.  A cylindrical passage extends into the liquid cylinder block from the stuffing box side of the block to receive a plunger which is mounted in the stuffing box.  A cylindrical chamber, coaxial with the passage, extends from the passage to the suction manifold side of the liquid cylinder block.  In the suction manifold, a suction port leads to the cylindrical chamber of the liquid cylinder block.     The cylindrical chamber holds a suction valve, with a valve seat and a valve guide.  A discharge valve and valve seat are provided in a cylindrical opening extending from the chamber to an outer wall of the liquid cylinder block. A plug or cover in the cylindrical opening holds the discharge valve elements in place and serves as a guide for the discharge valve.  An opening in the cover communicates with a discharge port for the pump, formed in the liquid cylinder block.     The suction and discharge valve elements of the pump may be accessed by removing, respectively, the suction manifold and the discharge valve cover.  The suction valve seat and its guide, and the discharge valve seat, all are tapped for engagement by a threaded disassembly tool to remove these elements.
Patent CA-1160081-A (CA)
Inventor: FAVRON EMILE
IPC: G10D3/04
Filed: 1981-08-21
Granted: 1984-01-10
Abstract: Abstract A string supporting bridge arrangement for a stringed musical instrument comprises multiple bridges.  Where the bridge arrangement is installed in a stringed musical instrument having a top and bottom resonating panel, one bridge serves to directly transmit vibrations of the strings to the top resonating panel and one bridge serves to directly transmit vibrations to the bottom resonating panel so that the two panels vibrate in opposite direction to each other.
Patent CA-1165177-A (CA)
Inventor: MAILER WERNER H
IPC: B41J13/16
Filed: 1981-08-21
Granted: 1984-04-10
Abstract: FEED MECHANISM FOR CONTINUOUS       AND CUT FORM PAPER            ABSTRACT OF THE DISCLOSURE    A cut form paper transport apparatus in a belt printer includes driven exit friction rollers disposed for rolling engagement with a pressure roller pivotally supported on a pair of support arms which carry a deflector or guide plate spaced above the platen and disposed for engagement with the leading edge of a sheet of paper as it leaves the printing region for deflection of the leading edge into an exit path tangent to the platen and such that the leading edge of the sheet moves between the exit friction rollers and the pressure roller for engagement thereby when the sheet is in the exit path.  Mounted on the deflector plate is a pair of adjustment rollers disposed for rolling engage-ment with the outer surface of the platen for adjusting the position of the deflector plate with respect to the platen.
Patent CA-1128417-A (CA)
Title: Extractable nuclear antigen conjugated to  methylated serum albumin
Inventor: RIPPE DELFIN F
IPC: G01N33/48
Filed: 1981-10-27
Granted: 1982-07-27
Abstract: INSOLUBILIZED DEOXYRIBONUCLEIC ACID (DNA) ABSTRACT OF THE DISCLOSURE      A method of detecting antibodies to native deoxyribonucleic acid (n-DNA), anti-nuclear antibodies, antibodies to non-histone containing protein, rheumatoid factors, antibodies to thyroglobulin, and an immuno-fluorescent assay for such detection is described.  The method comprises incubating an insoluble conjugate of methylated bovine serum albumin (mBSA)-native deoxyribonucleic acid (n-DNA) or other substrates with serum from patients with systemic lupus erythematosus (SLE) or other autoimmune diseases for d sufficient length of time, washing the pre-cipitate or flocculate, separating and discarding therefrom the super-natant fluid, adding a fluorescein labeled anti-immunoglobulin antibody to the washed flocculate and incubating the labeled mixture for a suf-ficient length of time, washing the incubated flocculate and separating therefrom the supernatdnt fluid, suspending the pellet in a liquid medium to determine the fluorescence of the flocculate, which is proportional to the concentration of antibodies to deoxyribonucleic acid and others in serum specimen.  The insoluble conjugate of methylated bovine serum albumin (mBSA)-native deoxyribonucleic acid (n-DNA) retains the double-stranded form of native deoxyribonucleic acid (n-DNA).
Patent CA-1124099-A (CA)
Inventor: WALTON W JAMES
IPC: E04G13/00
Filed: 1981-11-20
Granted: 1982-05-25
Abstract: ABSTRACT OF THE DISCLOSURE           The subject invention is an improved collar form for retaining, during hardening, a cement-like material within the annular region between a pipe and a cement floor through which the pipe vertically extends.  The collar form is comprised of two elements which are quickly fastened together to form a planar configuration which extends to cover one end of the annular region and presents a sealing contact with both the floor and the pipe.
Patent CA-1182047-A (CA)
Inventor: SCHWINN HORST
IPC: A61L2/00
Filed: 1981-11-27
Granted: 1985-02-05
Abstract: Abstract of the disclosure:      A process for the production of a preparation, which is virtually free from the risk of transmitting hepatitis, of blood-clotting factors IX and X by warming, and preparations of these clotting factors obtained in this way are described. In this process, the preparation is warmed in the presence of calcium ions and, if appropriate, an aminoacid and/or a saccharide or sugar alcohol.
Patent CA-1171553-A (CA)
Inventor: SHANNON JOHN M
IPC: H01L29/812
Filed: 1981-12-17
Granted: 1984-07-24
Abstract: PHB 32747                 15                    5.10.1981 ABSTRACT: Schottky barrier field effect transistors, A high-gain AMESFET (i.e. a Schottky barrier FET) has the gate electrode (6) present directly on a semiconductor body (1). A highly doped layer (2), which forms part of the channel of the transistor extends below electrode (6) between source and drain regions (4 and 5) respectively. A highly doped surface region (7) of the opposite conductivity type to layer (2) is present be-tween electrode (6) and layer (2). Region (7), which is so thin that it is fully depleted in the zero gate bias condition, raises the effective height of the Schottky barrier. Layer (2) is so thin that it can support with-out breakdown an electric field greater than the critical field for avalanche breakdown of the semiconductor material of this layer. Thus the doping concentration of layer (2) can be increased so that more charge can be depleted from it. The region (7) extends beyond the gate electrode (6) on the drain side to reduce the surface electric field. The inclusion of a more lightly doped layer (13) of the same conductivity type as layer (2) increases the mobility of the charge carriers in the channel.
Patent CA-1181753-A (CA)
Inventor: KANOJIA RAMESH M
IPC: A61K31/35
Filed: 1982-01-13
Granted: 1985-01-29
Abstract: NOVEL CYCLOHEPTANES     ABSTRACT     The preparation of racemic lR, 4R, SR-5-(4', 8'-dimethyl -5'-hydroxy-7'-nonenyl)-5-methyl-8-oxabicyclo[3.2.1]-octane-l-acetic acid is described.  The cycloheptane compounds are active uteroevacuant agents.
Patent CA-1169760-A (CA)
Inventor: PARRISH DAVID R
IPC: F25J3/04
Filed: 1982-02-18
Granted: 1984-06-26
Abstract: ABSTRACT Disclosed is a method and apparatus for the enhanced recovery of liquid hydrocarbons from underground formations, said method comprising recovering a mixture comprising carbon dioxide and contaminants comprising hydrocarbon, hydrogen sulfide, or mixtures thereof, from an underground formation; combusting said mixture with an oxygen enriched gas to form a concentrated carbon dioxide stream; and inject-ing at least a portion of said concentrated carbon dioxide stream into an underground formation to enhance recovery of liquid hydrocarbon.
Patent CA-1171845-A (CA)
Title: Catalyseur et procede pour le traitement des gaz  residuaires industriels contenant des composes du  soufre
Inventor: DUPIN THIERRY
IPC: C01B17/50
Filed: 1982-03-12
Granted: 1984-07-31
Abstract: La présente invention concerne un catalyseur et un procédé pour le traitement des gaz résiduaires industriels contenant des composés du soufre. Les catalyseurs selon la présente invention sont caractérisés en ce qu'ils comportent de l'oxyde de titane et un sulfate d'un métel alcalinoterreux. Ces catalyseurs sont en particulier utilisables pour le traitement des gaz résiduaires industriels selon le procédé Claus de récupération du soufre à partir de gaz renfermant notamment de l'hydrogène sulfuré, de l'anhydride sulfureux et éventuellement des dérivés organiques du soufre tels que le sulfure de carbonyle, le sulfure de carbone et les mercaptans.
Patent CA-1171877-A (CA)
Inventor: BECK CYRIL
IPC: A61P1/16
Filed: 1982-03-31
Granted: 1984-07-31
Abstract: Abstract:    A procedure is described for the preparation of .alpha.-(3,4,5-trimethoxybenzoylthio)-propionyl glycine by reaction of .alpha.-halogenopropionyl glycine with salts of 3,4,5-trimethoxybenzoyl-thiobenzoic acid or, alternat-ively, by acylation of the glycine with .alpha.-(3,4,5-tri-methoxybenzoylthio)-propionic acid.  The product is useful for the treatment of bronchopathies, hepatopathies and poisoning.
Patent CA-1171410-A (CA)
Inventor: TRUBIANO PAOLO C
IPC: A61K47/36
Filed: 1982-04-19
Granted: 1984-07-24
Abstract: ABSTRACT OF THE DISCLOSURE    Starches useful as tablet disintegrants consist essentially of a free-flowing, crosslinked and pregelatinized starch powder having a moisture content of about 12% by weight or less.  The starch is characterized by its uniformly swollen, virtually non-birefringent granules, by a swelling value in cold water of above 3 ml. and below 25 ml., and by an acid viscosity breakdown of 400 B.U. or less, all of which are correlated to this disintegration performance.  The better starch disintegrants (i.e. the more highly crosslinked) have swelling values of 18 ml. or less and show little or no bredkdown (0-150 B.U.).          The modified stdrches may be used in any tabletting method (e.g. direct compression or granulation), typically in amounts of about 10% by weight or less.
Patent CA-1212138-A (CA)
Inventor: COOK RICHARD C
IPC: B23K35/02
Filed: 1982-04-30
Granted: 1986-09-30
Abstract: ABSTRACT OF THE DISCLOSURE           A method of casting a stud of abrasion resistant metallic material having one generally cylindrical end por-tion engageable with stud welding equipment and an opposite generally cylindrical end portion weldable to a metallic surface.  A mold is provided with two separable parts each having a mold cavity, one mold cavity being shaped to form one end portion of the stud and the other mold cavity being shaped to form the opposite end portion of the stud.  The mold is closed to cause the mold cavities to define a volume corresponding to that of the stud, molten abrasion resistant metallic material is passed into the mold cavities, and the material is allowed to solidify and thereby form a stud.          The mold is then opened and the stud removed.
Patent CA-1194839-A (CA)
Inventor: TACHIBANA MASATAKA
IPC: B07B1/00
Filed: 1982-05-20
Granted: 1985-10-08
Abstract: Abstract:        Apparatus for sorting living eggs from a mixture of live eggs and dead eggs during the process of artifi-cial incubation of salmon, trout, and the like, in which fish eggs fed with water onto a rotary disc are moved radially outwardly to form a row of eggs along a guide plate at the outer periphery of the rotary disc by cen-trifugal force.  A photocell sensor projects light on the row of eggs to detect reflected light to differentiate between the dead eggs and the live eggs, and high speed injection of air moves the dead eggs detected by the sensor to a different radial position on the rotary disc for separating them from the live eggs.  Subsequently, the live eggs flow from the end of the guide plate through a good egg acceptance port into a good egg hopper and the dead eggs separated by high speed air flow through a bad egg acceptance port into a different hopper.
Patent CA-1162299-A (CA)
Inventor: SAITO ETSURO
IPC: G11B17/03
Filed: 1982-05-31
Granted: 1984-02-14
Abstract: ABSTRACT OF THE DISCLOSURE         A magnetic disk assembly is comprised of a magnetic disk and a hub member centrally positioned on that disk and having a non-circular opening for receiving a circular drive shaft which serves to rotatably drive the magnetic disk.          The hub member includes at least two reference surfaces which converge toward each other and which form two respective walls of the opening,  and one or more resilient members having a surface which forms a third wall of the opening.    The three walls are positioned and dimensioned such that when a circular drive shaft is received,  the reference surfaces and the surface of the resilient member all tangentially contact the drive shaft to be rotated thereby when the drive shaft rotates.
Patent CA-1183979-A (CA)
Inventor: GIBSON DAVID V
IPC: C09D5/00
Filed: 1982-06-29
Granted: 1985-03-12
Abstract: ABSTRACT OF THE INVENTION       This invention relates to the preparation of stable aqueous dispersions of particles of film-forming polymer, the particles comprising at least one pre-formed polymer and at least one polymer formed in situ ("multi-polymer particles").      The inadequate stability exhibited by many previously known film-forming systems based on multi-polymer particles especially in the presence of co-solvents, may be overcome by preparing the particles in the presence of a stabilising compound which is an amphipathic compound with a hydrophilic-lipophilic balance (HLB) value of at least 8 and whose lipophilic portion comprises at least one ethylenic double bond. The dispersions of this invention are useful as the film-forming components of coating compositions.
Patent CA-1191905-A (CA)
Inventor: CHOW SHERMAN M
IPC: H04L27/20
Filed: 1982-06-30
Granted: 1985-08-13
Abstract: ABSTRACT     A MODEM for a high frequency radio data link which substantially enhances the recovery of data transmitted via the link in the face of multipath distortion and fading.  A serial digital input signal for transmission is split into odd bit and even bit data streams, having synchronous bit timing.  Each pair of bits, referred to as a symbol, is phase shifted by .pi./4 which encodes its timing, for later clock recovery.  The resulting signal is then twice differentially phase encoded which facilitates the recovery, when demodulated, of the original symbols overcoming the effect of Doppler shift and/or transmitted oscillator center frequency offset.  The resulting signal then phase modulates a subcarrier signal having a frequency much higher than the symbol rate, and the phase modulated subcarrier is converted to a spread spectrum signal for transmission.  This digital signal is provided to a high frequency analog transmitter for transmission with the signal spread over a particular HF channel, to a receive point.  The spread spectrum signal thus substantially reduces or eliminates the effect of multipath fading, the double differential coding of the symbols substantially reduces or eliminates the effect of frequency shift due to slow changing Doppler shifts or other causes, and the phase shifting of each symbol, formed of two binary bits, in effect encodes the clock timing into the signal.
Patent CA-1182751-A (CA)
Title: Anti-inflammatory ophthalmic solution and process for preparing the same
Inventor: MASUDA KIYOSHI
IPC: A61P27/02
Filed: 1982-08-23
Granted: 1985-02-19
Abstract: ABSTRACT           An anti-inflammatory ophthalmic solution containing (A) 2-(2-fluoro-4-biphenylyl)propionic acid or its ophthalmologically acceptable salt and (B) .beta.-cyclodextrin or ?-cyclodextrin.  The ophthalmic solution makes easy operations conducted for diseases in ophthalmic region, and is useful for early  recovery or reduction of inflammation by pre- and post-operative topical instillation thereof or by intraocular perfusion with a perfusate to which the ophthalmic solution is added, or for treatment of inflammatory eye diseases.
Patent CA-1203044-A (CA)
Title: Compositions de polyimides aromatiques presentant une   solubilite elevee et leurs utilisations
Inventor: RABILLOUD GUY
IPC: C08L79/08
Filed: 1982-10-19
Granted: 1986-04-08
Abstract: La présente demande concerne de nouvelles compositions de polyimides aromatiques présentant une solubilité élevée dans de nombreux solvants organiques et d'excellentes propriétés adhésives. Ces compositions sont fabriquées en faisant réagir une diamine aromatique avec un tétra-ester ou un diacide-diester dérivé de l'acide benzhydrol tétracarboxylique -3,3',4,4', la réaction étant poursuivie jusqu'à obtention d'une viscosité inhérente d'au moins 0/1 dl/g et d'au plus 2 dl/g, cette viscosité étant mesurée dans la N-méthylpyrrolidone à 30.degree.C, pour une concentration de 5g de composition par litre de N-méthylpyrrolidone. Les compositions ainsi obtenues peuvent être employées comme liant dans la fabrication des matériaux composites, comme vernis isolant pour le revêtement et l'émaillage des conducteurs métalliques, comme base pour l'élaboration de compositions adhésives, de mousses et matériaux cellulaires et comme films de protection capables de résister à des températures élevées.
Patent CA-1198093-A (CA)
Inventor: HERRINGTON FOX J JR
IPC: B65D33/20
Filed: 1982-11-26
Granted: 1985-12-17
Abstract: ABSTRACT               PROTECTIVE STRIP FOR Z-FOLD BAG CLOSURE          An improved Z-Fold closure For flexible bags such as thermoplastic bags comprising polyethylene Film comprising a pressure sensitive adhesive strip and a protective strip having one or more ribs of sufficient stiffness and dimension so that the strip of adhesive is substantially contacted by only the top portion(s) of the rib(s) when the bag closure is in a stored or "Z" fold position.