baber/WOPTO huggingface dataset:
Patent CA-1211127-A (CA)
Inventor: CORDIER GEORGES
IPC: C07C209/74
Filed: 1981-07-30
Granted: 1986-09-09
Abstract: A B S T R A C T          "PROCESS FOR THE SELECTIVE PREPARATION OF ANILINES SUBSTITUTED IN THE META-POSITION(S) BY CHLORINE"          A process for the preparation of anilines substituted in the meta-position(s) by chlorine by the catalytic hydrogenation, in the liquid phase, under the action of heat and under pressure, in the presence of a noble metal from Group VIII of the Periodic Table of the Elements of an aniline or nitrobenzene derivative of the general formula:                      (I) (wherein Y represents the hydrogen atom or the oxygen atom, X' and X" each represent a chlorine or hydrogen atom, or an optionally substituted alkyl, aryl, aralkyl, alkoxy, aryloxy or aralkoxy radical, at least one of X' and X" representing a chlorine atom, and R', R" and R"' each represent a chlorine or hydrogen atom, or an optionally substituted alkyl, aryl, aralkyl, alkoxy or aryloxy radical, at least one of the three symbols R', R" and R"' representing a chlorine atom) characterised in that the reaction is carried out in the presence of a co-catalyst based on at least one heavy metal belonyiny to one of the columns Ib to Via of the Periodic Table.    The meta-chloroaniline products are useful in the manufacture inter aliah of plant-protection products.
Patent CA-1147501-A (CA)
Inventor: COX MALCOLM F JR
IPC: A42B3/20
Filed: 1981-09-14
Granted: 1983-06-07
Abstract: ROGERS, BERESKIN & PARR                C A N A D A     Inventor:  MALCOLM F. COX, JR.            JOHN EDWARD WARRINGTON     Title:  PROTECTIVE HELMET                  ABSTRACT OF THE DISCLOSURE     A hockey helmet is specifically described and includes an outer shell having a front section, two side sections extending rearwardly from the front section and a centre section which is separate from the side sections and which extends rearwardly from the front section and then downwardly to protect the rear head area of a wearer.  The centre section and side sections include overlapping por-tions which curve laterally towards the neck area of the helmet and the sections are displaceable with respect to one another to vary the extent of the overlap and thereby simultaneously vary both the longitudinal and lateral dimension of the helmet.  Fasteners are provided for securing the overlapping portions of the sections in an adjusted position.
Patent CA-1159738-A (CA)
Inventor: LEVITAN RONALD
IPC: A61B17/00
Filed: 1981-09-29
Granted: 1984-01-03
Abstract: ABSTRACT  OF  DISCLOSURE            A surgical device for accurate sampling of the uterine endometrium comprises a tubular sleeve, a piston which is longer than the sleeve and which slides within the sleeve and means for obtaining an endometrial sample at one end of the piston.   The device is made of plastics with properties such that the sampling means can deform to be received within the sleeve and on, removal from the sleeve restores itself to its original shape.
Patent CA-1163845-A (CA)
Inventor: ROWE WILLIAM A
IPC: H04N5/74
Filed: 1981-11-18
Granted: 1984-03-20
Abstract: ABSTRACT OF THE DISCLOSURE A projection optical system is disclosed that is protractible and retractible within a narrow spatial column for emerging from and nesting in a cabinet of an ultra-compact, rear-projection television receiver.  The system comprises in combination a stationary optical assembly permanently enclosed in a lower portion of the cabinet and having image projection means and first mirror means.  A protractible optical assembly is elevatable as a unit from the cabinet; the assembly includes a mirror and a rear projection screen.  The mirror and screen are at angles effective to reflect and receive, respectively, an aerial image of the television image formed by the image projection means of the stationary optical assembly.  The angles are also effective for nesting the mirror and the screen with components of the stationary optical assembly.  The optical system, when retracted and nested is overall depth-wise-shallow and the receiver is as compact as a conventional, large-screen console television receiver.  When the system is protracted within the narrow spatial column the receiver remain. depth-wise-shallow, yet it is capable of displaying an image with an area greater than three times the image area of the conventional, large-screen console television receiver.
Patent CA-1192149-A (CA)
Inventor: HELINSKI DONALD R
IPC: C12N1/20
Filed: 1982-01-07
Granted: 1985-08-20
Abstract: ABSTRACT OF THE DISCLOSURE Novel compositions and methods for cloning DNA in a broad range of Gram-negative bacteria.  Relatively small vectors are prepared substantially free of DNA sequences coding for transfer functions, while having a broad host range replication function.  While the plasmid is not self-transmissible, it is transmissible by means of a helper plasmid, which desirably has a narrow host range replication function.  Exogenous DNA may be inserted into the first plasmid and conjugally transferred to the target host by means of a convenient bacterial host.
Patent CA-1169703-A (CA)
Inventor: BROOKE MICHAEL E
IPC: E05D15/36
Filed: 1982-02-19
Granted: 1984-06-26
Abstract: APPLICATION FOR LETTERS PATENT       FOR        ENCLOSURE FOR BATHTUB OR SHOWER      HAVING SLIDING DOORS                ABSTRACT OF THE DISCLOSURE    An enclosure for a bathtub or shower having a sliding door assembly and comprising a header or supporting assembly including a front header and a side header operatively connected thereto, each header having a pair of tracks, one for each door, the tracks of the front header communicating with the respective tracks of the side header at a bevel joint, a pair of doors each having hanger assemblies mounted on their upper edge, each hanger assembly having a glider member at its end engaged in one set of said tracks, said doors being adapted to be alternatively positioned in front of the enclosure or to be slid to a storage position along a side wall of the enclosure.
Patent CA-1183400-A (CA)
Inventor: VAN SICE WILLIAM S
IPC: F16P1/02
Filed: 1982-03-01
Granted: 1985-03-05
Abstract: ABSTRACT OF THE DISCLOSURE           An improved safety device or guard for use upon a press or other machine, which has a work zone for receiving a work piece, is provided to protect the operator.  The guard has a base with sloped surfaces leading to the work area and slidable gates positioned adjacent said base.  The operator inserts the work piece by moving it along the sloped surfaces of the base until it contacts the gates and forces the gates upward.  The gates are raised only by an amount which is sufficient to allow the work piece to move into the work zone.  The gates ride upon the top of the work piece and automatically adjust for various thicknesses of the work piece during the operation of the machine. The guard has flange members which are attached to the base for slidably mounting the guard to a machine and has a barrier mounted upon the base which is angled inwardly toward the work zone for permitting the use of work pieces which are shorter than the overall width of the barrier.
Patent CA-1186731-A (CA)
Title: Three-phase inverter
Inventor: BECK WILLIAM H
IPC: H02M7/5387
Filed: 1982-03-30
Granted: 1985-05-07
Abstract: ABSTRACT OF THE DISCLOSURE         A pulse width modulated three-phase inverter is disclosed which controls the harmonic content in the output waveforms by utilizing notches created by the addition of eight extra switching points in the inverter cycle.  The notches, which are symmetrically crated about four locations in the cycle, vary in width to control the amplitude of the fundamental frequency component of the output wave form, while the angles which are the centers of the notches create a unique relationship between the fundamental frequency component and the fifth and seventh harmonics.  the resulting waveforms permit variable frequency, constant volts/Hertz operation of an AC induction motor drive system  without increasing the percentages of fifth and seventh harmonics while varying the fundamental frequency of the system.
Patent CA-1192598-A (CA)
Title: Tube a eclairs a connexions electriques radiales avec   alimentation en gaz
Inventor: BEDU MARCEL
IPC: H01J61/80
Filed: 1982-06-04
Granted: 1985-08-27
Abstract: Tube à éclairs à connexions électriques radiales et à alimentation en gaz. Ce tube comprend des électrodes reliées au tube à décharge par des joints d'étanchéité. Les connexions électriques sont disposées radialement. L'électrode reliée à la terre est percée d'ouvertures communiquant avec un canal permettant l'alimentation en gaz. Application au pompage optique des lasers.
Patent CA-1179731-A (CA)
Inventor: INOMATA KOICHIRO
IPC: H02M3/337
Filed: 1982-06-23
Granted: 1984-12-18
Abstract: Abstract of the Disclosure A high frequency switching circuit comprised of a single-ended switching circuit, rectifying-smoothing circuit and magnetic amplifier which is connected between said single-ended switching circuit and rectifying-smoothing circuit.  The magnetic amplifier includes a saturable reactor which has a coercive force Hc of 0.6 Oe or below and a rectangular ratio Br/Bs of 80% or below at an operating frequency of 20 kHz.  The saturable reactor is prepared from an amorphous magnetic alloy having a composition of (co1-a-b-c Fea Nib Mc)l-d Xd where:     M = one element selected from a group consisting of the elements of Nb, Cr, Mo, V, Ta, Ti, Zr and W     X = B or a compound of B and Si in which the content of Si is set at 25 atomic % or less 0.04 ? a ? 0.15 0 ? b ? 0.10 0.005 ? c ? 0.10 0.15 ? d ? 0.30
Patent CA-1189606-A (CA)
Inventor: OHWAKI HIROTSUGU
IPC: H05K7/02
Filed: 1982-08-24
Granted: 1985-06-25
Abstract: ELECTRONIC SIGNAL PROCESSING APPARATUS                  ABSTRACT OF THE DISCLOSURE     An electronic signal processing apparatus, such as, a personal computer, is basically composed of a power section for providing DC operating power from an AC power source and a main signal processing section operative by the DC operating power for performing the minimal necessary functions. The power and main signal processing sections are mechanically connected for relative sliding movements between closely adjacent positions minimizing the overall dimensions of the apparatus and spread-apart positions in which a space is defined between the power and main signal processing sections for accommodating at least one additional signal processing or handling section by which the func-tional capabilities of the apparatus are expanded.
Patent CA-1182181-A (CA)
Inventor: MILLEKER WILLIAM
IPC: H04B1/10
Filed: 1982-10-28
Granted: 1985-02-05
Abstract: Abstract Data muting apparatus is described that mutes data signals communicated between a central station and mobile and portable radios in a dispatch radio communications system.  A dispatcher at the central station also com-municates with operators of the mobile and portable radios.  The central station includes a base station having an RF transmitter and RF receiver, a dispatcher console, a general communications controller (GCC), a digital communications computer and a display terminal.          The base station transmitter and receiver communicate over an RF duplex channel to the RF receiver and RF transmitter, respectively, of the mobile and portable radios.  The dispatcher console provides for voice communications and is coupled by a transmit signal line and a receive signal line to the base station transmitter and receiver, respectively.  The GCC provides for data communications and is also coupled to the transmit signal line and is interposed between the dispatcher console and the base station receiver in the receive signal line.          The GCC and mobile and portable radios include data muting apparatus embodying the present invention.  The data muting apparatus includes a detector for detecting the presence of a carrier signal and muting circuitry for muting the receiver output for a predetermined time interval when a carrier signal has been detected.  During the predetermined time interval, other circuitry may detect a synchronization word in a received data signal and mute the receiver output until still other circuitry detects the last bit of a following information word in the received data signal and unmutes the receiver output.          Thus, data signals at the beginning of each communication are muted without impairing voice communications. furthermore, since the receiver output is muted until the last bit of the data signal is detected, the muting apparatus can accommodate variable length data signals.
Patent CA-1193613-A (CA)
Inventor: GRASSELLI ROBERT K
IPC: C07C57/04
Filed: 1982-12-08
Granted: 1985-09-17
Abstract: PREPARATION OF UNSATURATED ACIDS AND ESTERS          BY OXIDATIVE CONDENSATION                           ABSTRACT        This invention relates to a novel vapor phase process for the production of unsaturated acids and esters, such as acrylic acid and methyl acrylate, by reacting a primary alcohol with a saturated monocarboxylic acid, ester, or anhydride in the presence of oxygen over a solid catalyst.                     BACKGROUND OF THE INVENTION        Preparation of unsaturated acid derivitives from corresponding saturated compounds by condensation with formaldehyde is known.  For example, U.S. Patent No. 3,701,798 disclosed the production of unsaturated acid derivatives through condensation with formaldehyde over catalysts containing rare earth oxides.  U.S. Patent No. 3,014,958 discloses an improvement for making unsaturated esters from formaldehyde and other esters wherein the feed contains more than 7% of the desired unsaturated ester.  Catalysts used in this reference are phosphates and mixed oxides.          U.S. Patent No. 3,933,888, U.S. 3,578,702 and U.S. 4,165,438 all disclose reactions using formaldehyde over various oxide catalysts such as vanadium-phosphorus, metals of the lanthanide series, or metals found in Groups IIA and Group IIIA of the Periodic Table.     1.
Patent CA-1189619-A (CA)
Inventor: HASEGAWA HIROSI
IPC: H05K5/02
Filed: 1982-12-15
Granted: 1985-06-25
Abstract: ABSTRACT OF THE DISCLOSURE      A cassette-type magnetic-bubble memory apparatus comprising a bubble cassette which houses a bubble memory device and a main apparatus which comprises a holder into which the cassette is inserted.  The contacts of the holder contact the contacts of the cassette in cooperation with the action of inserting the cassette into the holder so that current flows into the bubble memory device.  The main apparatus comprises a detectoring means for detecting the action of inserting and withdrawing the cassette.  The circuit for controlling the current introduced into the magnetic-bubble memory device is constructed so that the current is introduced after the contacts of the cassette and the contacts of the holder are connected and is inter-rupted before the contacts of the cassette and the contacts of the holder are disconnected.
Patent CA-1227141-A (CA)
Inventor: HENDRIKS RUDOLF
IPC: F04D27/00
Filed: 1982-12-21
Granted: 1987-09-22
Abstract: ABSTRACT         The invention relates to a method of improving the part-load behavior of a turbo machine operating with a rotor having fixed vanes.  The said method uses the feature of applying auxiliary fluid injection nozzles near the inlet of the rotor for adding a small amount of fluid to the main fluid flow.  The said additional amount is directed such that a substantial velocity component of the movement of this additional fluid is directed tangentially with respect to the rotation of the rotor.
Patent CA-1190141-A (CA)
Inventor: HUEY WAI J
IPC: E21B33/06
Filed: 1983-01-04
Granted: 1985-07-09
Abstract: WELL BLOWOUT PREVENTER, AND PACKING ELEMENT            ABSTRACT        A well blowout preventer packer unit is characterized by long life, and induced back to front (radial) rubber feeding between metallic inserts to close on well pipe or on a well tool for producing a pressure gradient against the pipe or tool which is greatest at the bottom of the packer extent engaging the pipe, and lowest at the top of the packer extent engaging the pipe.  The preventer piston has at least three, and typically four, frusto-conical surfaces to progressively and sequentially penetrate the packer rubber to effect controlled and enhanced rubber displacement for sealing against the pipe or tool.
Patent CA-1179993-A (CA)
Inventor: MAHAFFY REID A
IPC: B65D5/42
Filed: 1983-01-11
Granted: 1984-12-27
Abstract: IMPROVED EXPANDIBLE PACKAGE  FOR DISPENSING CONTAINERS     ABSTRACT     A sealed package for pressurizing the contents of dispensing containers.  The package con-tains chemicals which react to develop gas pressure to expand the package when in the dispensing container.          A series of sequentially rupturable pockets add further increments of internal pressure as dispensing proceeds.          These pockets, and additional pockets containing chemi-cals for initiating package pressurization, are formed in an outer film heat-sealed to a second outer film to define the package.  The rupturable pockets are covered with a tape to maintain the chemicals isolated until rupture is effected by progressive lift-off of the tape as the package expands.
Patent CA-1223934-A (CA)
Inventor: BOTREL JOSE
IPC: H04N7/14
Filed: 1983-02-03
Granted: 1987-07-07
Abstract: ABSTRACT           An asynchronous transmission system, in particular for interactive videotex systems, in which a parity bit is used for each character with a continuous ARZ-type retransmission method, wherein the data are transmitted in blocks, so-called code words, each code word being comprised of a block of seventeen bytes "1"-"15" constituting the characters to be transmitted encoded by seven bits b1-b7, the 8th bit b8 of each byte being the parity bit, the 16th byte being the check byte of the code word, and the 17th byte being the enbling byte of the code word.
Patent CA-1198628-A (CA)
Inventor: HANSMANN JOHANN
IPC: E01B27/18
Filed: 1983-02-09
Granted: 1985-12-31
Abstract: ABSTRACT OF THE DISCLOSURE     A mobile track leveling machine comprises a pneumatic arrangement for introducing additional ballast into a gap between a track bed and a lifted track, which includes a storage container for the ballast, a vertically adjustable pipe arranged to receive ballast from the storage container and to be immersed in the track bed alongside a longitudinal edge of a respective track tie, the pipe having a tapered end for ready penetration into the track bed and a flattened side defining an outlet for the additional ballast facing the longitudinal tie edge.  Compressed air is delivered into the pipe for moving the additional ballast therethrough and out of the outlet.  A power drive vertically adjusts the pipe, a stop is arranged on the pipe for engagement with the lifted track to limit the immersion depth thereof, and a power-driven metering device is arranged between the storage container and the pipe for delivering a metered amount of the additional ballast from the container to the pipe, the additional ballast amount being metered by the device in response to the lifting stroke to fill the gap between the track bed and the lifted tie.
Patent CA-1185780-A (CA)
Inventor: GOLDIE BRIAN P F
IPC: B01J39/14
Filed: 1983-03-18
Granted: 1985-04-23
Abstract: ABSTRACT OF THE DISCLOSURE           METHOD OF INHIBITING CORROSION USING CATIONS      A corrosion inhibitor comprises particles of an inorganic oxide having cations of yttrium or cations of one or more metals of the lanthanide group chemically bound to the particles by ion-exchange. The cations are released by ion-exchange with other cations and not by the water solubility of the corrosion inhibitor.    The corrosion inhibiting particles may be prepared by contacting particles of the inorganic oxide with an aqueous solution containing the required cations.  Alternatively. the particles of the inorganic oxide may be contacted with an aqueous solution of a alkali metal so that alkali metal ions are exchanged onto the surface of the oxide and then contacting the alkali metal exchanged oxide with a solution of the required cations so that the required cations replace the alkali metal cations.    The corrosion inhibiting particles may be incorporated into protective coatings e.g. paints based on epoxy resins, alkyd resins, vinyl resins or chlorinated rubbers in amounts up to 80% wt based on the dry film weight of the coating.
Patent CA-1193818-A (CA)
Inventor: GELLERT JOBST U
IPC: B29C45/20
Filed: 1983-03-24
Granted: 1985-09-24
Abstract: ABSTRACT OF THE DISCLOSURE         This invention relates to an injection molding system having a valve pin which is hydraulically actuated between an open and a closed position in which its tip end is seated in a gate leading to the cavity.  The act-uating mechanism includes a piston secured to the driven end of the valve pin which reciprocates in a cylinder.          The cylinder has an inner cylindrical member which is brazed in an outer member with a flanged portion.          Separate hydraulic fluid ducts extend from the flanged portion through the outer member, along grooves in the outer wall of the inner member and then through holes through the inner member to conduct hydraulic fluid to opposite sides of the piston.  The flanged portion of the outer member has a pair of passages extending through it, each connected to one of the ducts.  Alternate ends of the passages are sealed off so that hydraulic fluid may be received either from supply lines drilled through the back plate in which the cylinder is seated or an abutting top plate.  This structure provides the advantage that the hydraulic fluid supply lines need not be drilled through the back plate if the system layout is such that there is a danger this could ruin the back plate.
Patent CA-1189346-A (CA)
Inventor: LYNN JAMES B
IPC: G01J5/04
Filed: 1983-05-03
Granted: 1985-06-25
Abstract: COKE OVEN FLUE TEMPERATURE MEASURING PROBE MACHINE         Abstract of the Disclosure A temperature measuring probe and method of detecting infrared radiation from flue walls and trans-mitting the detected infrared radiation through fiber optic cables to photoelectric detection-conversion cells which convert the radiation to electrical signals which are measured and translated into temperatures.          Concentric metallic flexible hose mounted on a carriage for mobility provides water cooling for the fiber optic cable with a portable reeling machine for controlling the movement of the cable, hose, and probe head.  The probe head provides viewing ports for the terminal ends of the fiber optic cable.
Patent CA-1216306-A (CA)
Title: Process for the preparation of 2,3-dimercaptosuccinic   acid
Inventor: LINDEMANN MARTIN K O
IPC: C07C319/04
Filed: 1983-06-06
Granted: 1987-01-06
Abstract: PROCESS FOR THE PREPARATION OF 2,3-DIMERCAPTOSUCCINIC ACID            ABSTRACT OF THE DISCLOSURE   2,3-dimercaptosuccinic acid and esters thereof are prepared by reacting sodium thiosulfate with acetylene dicarboxylic acid in the presence of a strong acid and subjecting the resulting alkylthiosulfate to an acid hydrolysis.  The 2,3-dimercaptosuccinic acids and esters thereof are useful as an antidote for heavy metal poisoning.
Patent CA-1222617-A (CA)
Inventor: ZIMMERMANN HORST
IPC: B23K33/00
Filed: 1983-07-05
Granted: 1987-06-09
Abstract: METHOD OF CONNECTING INSIDE PLATED CYLINDRICAL WORKPIECES                 ABSTRACT OF THE DISCLOSURE            A method of connecting inside plated cylindrical workpiecs comprises arranging the workpieces to be connected in side by side relationship and providing as narrow as possible an asymmetric U-shaped butt groove between the workpieces leaving a root web at the end of the groove so that a minimum amount of welding material has to be introduced into the groove from the difficultly accessible inside of the workpiece and welding the two parts together by superimposing individual beads on one another and welding the remaining cross section of the basic material from the easily accessible outside of the work independently of the inside welding.