baber/WOPTO huggingface dataset:
Patent CA-1132337-A (CA)
Inventor: TAKAHASHI KIHEI
IPC: A44B19/42
Filed: 1979-11-05
Granted: 1982-09-28
Abstract: ABSTRACT OF THE DISCLOSURE           Apparatus for interengaging a pair of rows of slide fastener coupling elements, operatively associated with a device for producing the tapes with said elements.          The integrating device is of the type including a pair of radially spaced toothed wheels each guiding one respective row of elements, and additional pairs of presser rollers for engaging the respective tapes to press the elements of the two tapes into engagement with each other.  Contrary to prior art wherein the toothed wheels and the presser rollers were generally coaxial, the invention proposes to displace the toothed wheels slightly in upstream direction whereby the location of engagement by the presser rollers is slightly downstream of that of engagement by the toothed wheels.  Thus, the teeth of the toothed wheels do not obstruct the engaging motion of the elements during the pressing operation.
Patent CA-1139049-A (CA)
Inventor: MILOVANOVIC OLGA L
IPC: C08J9/14
Filed: 1979-12-28
Granted: 1983-01-04
Abstract: ABSTRACT OF THE DISCLOSURE          The use of methylene chloride as a blowing agent for resinous foams, particularly urethane foams is improved by incorporating a low molecular weight poly-hydroxy aliphatic compound having more than two hydroxyl groups.  Simultaneously with the addition, the amount of gelling catalyst (e.g., stannous octoate) required to obtain very soft foams, is reduced over that required using the methylene chloride without the polyhydroxy com-pound.  When the polyhydroxy compound is used, smaller amounts of the gelling catalyst are employed for equal foam properties when the fluorinated halocarbons are employed either alone or in combination with the methyl-ene chloride.
Patent CA-1123001-A (CA)
Inventor: BERGMAN LEE H
IPC: C07C69/80
Filed: 1979-12-31
Granted: 1982-05-04
Abstract: PHTHALIC ACID DIESTER PREPARATION WITH WASTE STREAM            PURIFICATION AND RECYCLE     Abstract of the Disclosure A continuous process for the preparation in at least one esterification reactor of phthalate diesters utilizing phthalic acid or anhydride and a stoichiometric excess of at least one saturated aliphatic alcohol con-taining about 4 to about 10 carbon atoms comprises (a) reaction of phthalic acid or anhydride with said alcohol in a reactor zone, (b) purification of the diester in a puri-fication zone in which the reaction product is neutralized with an alkali metal hydroxide, i.e., sodium hydroxide, to separate the diester and the unreacted phthalic acid or anhydride together with said saturated alcohol utilized in the reaction, said reaction product is separated into an organic phase and an aqueous waste phase.  The organic phase is washed with water, steam stripped, treated with activated charcoal and filtered to purify the diester product desired, (c) the aqueous phase containing monoester is separated from said organic phase in step (b) is purified by filtration to remove solid impurities, carbon treated to remove color bodies, and acidified and extracted with the same alcohol used in the esterification to obtain an organic phase which can be recycled to the reaction zone of the process without causing discoloration of the desired diester product of the process.     In the monoester purification process, acidifica-tion is accomplished utilizing a strong organic acid, i.e., sulfuric acid, prior thereto or simultaneously with ex-traction utilizing the same alcohol used in the esterifica-tion process.  Purification of the aqueous waste streams produced in the process can be accomplished using activated charcoal to remove organic wastes and precipitation of inorganic salts to remove inorganic impurities produced in the process.
Patent CA-1150890-A (CA)
Inventor: FABRIS HUBERT J
IPC: C08G65/00
Filed: 1980-01-24
Granted: 1983-07-26
Abstract: Abstract of the Disclosure A thermoplastic, linear and segmented poly-l, 2-propylene ether urethane having a Tg of below about -30°C. for the poly-1,2-propylene ether segments is made by reacting poly-1,2-propylene glycol having a high molecular weight; ethylene glycol, 2,3-butane diol or neopentyl glycol or mixture thereof; and 2,4-tolylene diisocyanate containing from about 55 to 100% by weight of the 2,4-isomer with the balance being the 2,6-isomer.
Patent CA-1133648-A (CA)
Title: Silicone composition which forms a ceramic at  high temperatures
Inventor: MINE KATSUTOSHI
IPC: C08L83/00
Filed: 1980-02-08
Granted: 1982-10-12
Abstract: Abstract What is disclosed is a composition of matter which is a siloxane copolymer, a siloxane polymer, a ceramic forming filler and a peroxide which upon heating to 500°C or greater forms a pliable, flexible ceramic material which is useful as insulative coatings on various electrical conductive substrates such as electric wires and cables.
Patent CA-1135273-A (CA)
Inventor: BOGDANOVIC BORISLAV
IPC: B01J27/128
Filed: 1980-02-18
Granted: 1982-11-09
Abstract: Abstract of the Disclosure A method of preparing a di-organo-magnesium compound of the formula R2Mg in which R is an organic radical bonded to Mg by carbon, comprising reacting magnesium hydride MgH2 or magnesium and hydrogen with an olefin in the presence of a catalyst comprising a compound of a transition metal of the 4th to 8th secondary group and an organometallic compound or a hydride of a metal of the 1st to 3rd principal groups of the periodic system.  Advantageously there is also present a polycyclic aromatic compound or a tertiary amine as activator and the reaction is effected in the presence of tetrahydrofuran as solvent at a pressure of about 1 to 300 bars at about 0 to 200°C, the atomic ratio of Mg : transition metal being from about 104 to 10 : 1, the molar ratio of transition metal compound : organometal compound or metal hydride being from about 0.1 to 10:1, the molar ratio of olefin : magnesium being from about 2 to 10 : 1 and the olefin being of the formula CH2=CHR' wherein R' is H or an alkyl, cyclo-alkyl, aryl or aralkyl group.
Patent CA-1140758-A (CA)
Title: Method and apparatus for manufacturing ammonia synthesis gas from a stream of hydrogen rich gas and a stream of nitrogen
Inventor: MCNEIL BRIAN A
IPC: C01B3/02
Filed: 1980-02-28
Granted: 1983-02-08
Abstract: ABSTRACT Difficulties associated with the operational stability of a conventional cryogenic plant for manufacturing ammonia synthesis gas from a steam rich in hydrogen and a stream of nitrogen are reduced by using three heat exchangers in place of the conventional single heat exchanger. In use, the first heat exchanger, which is preferably arranged with its cold end uppermost, is used to cool the stream of nitrogen to a temperature which: (a) if the nitrogen is above its critical pressure is between 8 and 28°C above its critical temperature; or (b) if the nitrogen is below its critical pressure is between 3 and 9°C above its dew point. Part of the nitrogen leaving the first heat exchanger is passed downwardly through a third heat exchanger where it is further cooled before being introduced into a nitrogen wash column where it acts as reflux. The third heat exchanger is cooled by vapour leaving the top of the nitrogen wash column. After being cooled in the first heat exchanger the stream rich in hydrogen is passed upwardly in a second heat exchanger where it is further cooled before being introduced into the lower portion of the nitrogen wash column. This further cooling is achieved by: (i) the balance of the vapour leaving the top of the nitrogen wash column; and (ii) vapourising the two phase mixture formed by expanding the liquid in the bottom of the nitrogen wash column; and (iii) adding external refrigeration if necessary. The overall layout has the advantage that the stream of nitrogen is passing downwardly in the third heat exchanger which operates in the temperature range where the density of the nitrogen increases rapidly as its temperature falls. In addition the largely liquid two phase mixture from the bottom of the nitrogen wash column vapourises as it passes downwardly through the second heat exchanger thereby reducing the problems associated with slug flow. Although three heat exchangers are used the overall capital cost of the installation is comparable with a conventional install-ation. This is because certain phase separators and distributors can be omitted. A modification is also described which facilitates recovery of most of the small amount of hydrogen in the liquid leaving the bottom of the nitrogen wash column.
Patent CA-1142909-A (CA)
Inventor: LANGER ARTHUR W JR
IPC: C08F10/00
Filed: 1980-03-04
Granted: 1983-03-15
Abstract: ABSTRACT OF THE DISCLOSURE A new improved catalyst system for alpha-olefin type polymerizations, includes at least one metal alkyl compound having the formula RnMr'3-n in combination with a Group IVB-VIII transition metal compound on a support and at least one Lewis base wherein H is selected from the group consisting of C3 to C20 secondary or ter-tiary alkyl, cyclo-alkyl, alkenyl or aralkyl groups; R' is selected from the group consisting of C1 to C20 primary alkyl, alkenyl or aralkyl groups, or a hydride, M is selected from the group consisting of aluminum, gallium, or indium; and n = 0-3.The improved catalyst system provides polymers having increased isotatic stereoregularity as well as lower catalyst residue.
Patent CA-1149274-A (CA)
Inventor: FELTEN GILBERT A
IPC: B29C67/00
Filed: 1980-03-28
Granted: 1983-07-05
Abstract: A TIRE BUILDING DRUM                Abstract of Disclosure A Tire Building Drum having radially expandable shoulder forming means and radially expandable bead seating means.  The drum includes an independently operable pair of annular pistons associated respectively with the shoulder forming means and the bead seating means such that the shoulder forming means can be operated independently in time, in radial extent and in force applied, of the bead seating means.  The latter is in like manner operable independently in time, in radial extent, and in force applied at the bead seating means.
Patent CA-1146268-A (CA)
Inventor: SCHATTEMAN ETIENNE A M
IPC: G11B15/675
Filed: 1980-04-09
Granted: 1983-05-10
Abstract: ABSTRACT OF THE DISCLOSURE           The specification describes a cassette loading apparatus which comprises a movable housing which carries the cassette into engagement with the tape driving means, play back and recording components of the video machine, and a cassette transport mechan-ism which transports the cassette from its insertion or rest position into the housing, the cassette transport mechanism being self-powered by means of a drive motor which moves the transport mechanism and thereby the cassette inward from its insertion posi-tion to an intermediate position within the housing.  The housing is then moved as a unit to carry the cassette into its operative position.  An important feature of the invention is the ability to release a protective door provided on the front edge of the cas-sette to protect the tape, so that the tape is accessible to the tape recording and play-back components of the video machine, and to cause both the cassette to move to its operative position and the protecting door to be displaced free and clear of the cassette automatically as an incident to the housing carrying the cassette into its operative position.
Patent CA-1175526-A (CA)
Inventor: MALINOWSKI CHRISTOPH W
IPC: H04L25/02
Filed: 1980-05-30
Granted: 1984-10-02
Abstract: Abstract of the Disclosure Digital information transmission system components including at least one unit arranged to transmit signal elements in parallel, at least one unit arranged to receive signal elements in parallel, and a corresponding plurality of signal transmission paths connected between such units to each convey a respective one of the signal elements, in which a unit serving to transmit such signal elements is constructed for selectively creating, in each path, a signal element in the form of a signal state representing either one of two binary values or a signal state different from that representing either such binary value; and a unit serving to receive such signals is constructed for producing a response which distinguishes between the appearance, in each path, of either binary value state or the different state.
Patent CA-1145806-A (CA)
Inventor: BIOLIK FELICJAN
IPC: H05B3/03
Filed: 1980-06-30
Granted: 1983-05-03
Abstract: ABSTRACT OF THE DISCLOSURE:         Electric installation for direct heating of a charge, such as a bath of metals and/or salts in melted state and solutions, comprising:  at least one heating element for heating the charge, each heating element being in the form of a vessel or partition made of at least two parts of different physico-chemical properties, these parts being firmly joined to each other and having a portion immersed in the heated bath.  Contact materials are in contact with a first surface of the heating element, a first electrode is dipped at least partially into the con-tact materials, and means are provided for applying an electric potential difference between the electrode and a second electrode located at least partially in the bath. An electric circuit is connected to the heating element and includes current supply means to the electrodes.  The bath is in contact with a second surface of the heating element, and the contact materials are included in the electric circuit of the heating element.
Patent CA-1152254-A (CA)
Inventor: GUILLEMIN GENEVIEVE
IPC: A61L17/00
Filed: 1980-07-11
Granted: 1983-08-23
Abstract: A biodegradable bone prosthesis or implant is made of a coherent material comprising calcium carbonate in crystalline form. The prosthesis or implant is in the form of a filler or replacement part for bone substance. It can also be in the form of a pin or screw.
Patent CA-1152193-A (CA)
Inventor: MATTY THOMAS C
IPC: H02P7/28
Filed: 1980-10-09
Granted: 1983-08-16
Abstract: 48,341 ABSTRACT OF THE DISCLOSURE         A direct current motor controlling apparatus determines the operational speed of one or more direct current motors such as traction motors propel-ling a passenger vehicle along a track.  The speed of the motor is established by changing the on and off conduction ratio or duty-cycle relationship of a switch device to determine the field current and the armature voltage of that motor.  The present apparatus utilizes solid-state switch devices to determine the mode of operation of the motor control apparatus which solid-state switch devices are more reliable and more simple in operation and less expensive to maintain.
Patent CA-1150850-A (CA)
Inventor: JONES CHARLES B
IPC: G03F9/00
Filed: 1980-10-30
Granted: 1983-07-26
Abstract: REGISTRATION PROCESS ABSTRACT OF THE DISCLOSURE     First article registration of a printed image of magnetic toner resist composition on a printed circuit board is achieved by registration holes in art-work which registers the art work with the magnetic film and separate holes in the artwork which registers the artwork with the printed circuit board, thereby regis-tering the magnetic image in the magnetic film with the circuit board.
Patent CA-1170040-A (CA)
Inventor: LUNDSTROEM OVE
IPC: E02F5/10
Filed: 1980-11-17
Granted: 1984-07-03
Abstract: ABSTRACT OF THE DISCLOSURE            For the ditching of drains normally various types of excava-ting machines are used.  This involves problems, however, especially when the ground has poor carrying capacity, for example in wetlands.  According to the invention, therefore, a body is proposed which has substantially V-shaped cross-section and smooth lower sides, and which is advanced through the soil masses to be removed for ditching the drain with a pointed end along the height of the body closed end facing in the direction of advancement, and which simultaneously is subjected to at least downwardly directed striking forces with relatively high frequency, whereby the body is maintained pressed down into the soil masses while it is being advanced.  The soil masses are thereby removed substantially in lateral directions by the side surfaces of the body and compacted.  For effecting the striking forces, preferably a vibrator is provided within the body.
Patent CA-1174103-A (CA)
Inventor: ZBORALSKI JON A
IPC: F24F13/08
Filed: 1980-12-12
Granted: 1984-09-11
Abstract: HORIZONTAL SASH FUME HOOD WITH AUXILIARY AIR CONTROL           ABSTRACT OF THE DISCLOSURE   A laboratory fume hood in which a horizontally slidable sash is coupled to and laterally moves a damper that opens and closes an internal dispensing opening from the auxiliary air source into the fume hood. The coupling structure causes the damper to move in an inverse manner relative to the sash so that as the sash opens, the damper closes, and vice versa.
Patent CA-1155785-A (CA)
Inventor: HAZEN GRETZ L
IPC: A01J25/00
Filed: 1981-01-09
Granted: 1983-10-25
Abstract: CLOSED CHEESE MAKING VAT WITH RECIRCULATING WHEY Abstract of the Disclosure A cheese making vat comprising a closed vessel having a vertical shaft mounted for rotation within the vessel.  The shaft carries a frame that extends radially outward from the shaft, and a series of vertical blades are mounted on the frame and are designed so that when the shaft is rotated in one direction, the blades act to cut the cheese curds and when the shaft is rotated in the opposite direction the blades act to stir or agitate the curds.  During the agitation cycle, whey is continuously withdrawn from the upper end of the vessel and circulated through a heat exchanger to increase the temperature of the whey.  The heated whey is then re-introduced into the lower end of the vessel.  The circulation of whey, in combination with the movement of the agitator blades, provides a gentle agitation for the curds.
Patent CA-1168360-A (CA)
Inventor: MOLL EDWARD W
IPC: G11C7/00
Filed: 1981-01-19
Granted: 1984-05-29
Abstract: MINIMUM SPACE DIGITAL STORAGE      OF ANALOG INFORMATION               Abstract of the Disclosure Analog or digital information, for example an audio input, is converted to a digital representation and encoded prior to storage in a digital form for minimizing the space required for storage of the digital information.          Pauses are eliminated and encoded in a form indicating the occurrence of the pauses.  Data is compared with prior received data such as to detect repetition.  When repetition is detected, a code indication of the period of repetition and the duration of repetition is inserted in the stored data.  Information is restored utilizing decoding networks responsive to the inserted codes which cause reinsertion of the pauses and repetitions.  Also, when the information is restored, background audio may be provided in the silent periods either from a separate memory or, when available, from an audio input circuit.
Patent CA-1167691-A (CA)
Inventor: BOVIO MICHELE
IPC: B41J19/20
Filed: 1981-03-18
Granted: 1984-05-22
Abstract: ABSTRACT  (Fig 8) SERIAL DOT PRINTER FOR OFFICE         MACHINES          The printer comprises a solid or liquid ink jet head 100 arranged to print one dot at a time on paper running over a platen 80.  The head is carried by a carriage 48 movable transversely with simple harmonic reciprocating motion.  In order to reduce the effect of inertial forces when the carriage reverses its movement, the drive is effected by an eccentric peg 70 on a disc 276, the peg engaging in a guide slot 54 of the carriage perpendicular to the direction of reciprocation.  An eccentric cam track 71 in the disc engages a peg 92 on a counterweight 90 for counterbalancing the inertial forces of the carriage.  In order to synchronise the printing operation with the carriage movement, an optical strobe disc 256 is rigid with the disc 276 and has slots 258 disposed at a pitch varying according to the harmonic motion. The platen 80 is rotated intermittently by a helical cam 277 carried by the disc 276 and a peg wheel 280, 281.  In order to compensate for discharge of a smoothing or reservoir circuit feeding the printing head 100, the duration of the pulses applied thereto can be increased in accordance with the rate at which dots are being printed.  In a modification the strobe disc is replaced by a linear transducer of capacitive type, with one part carried by the carriage.
Patent CA-1163765-A (CA)
Inventor: KLEIN REUBEN
IPC: B29B7/00
Filed: 1981-04-21
Granted: 1984-03-20
Abstract: Abstract of the Disclosure A plasticating apparatus operates continuously to plasticate material which is delivered intermittently to a molding device, the plasticating apparatus including a first screw conveyor which rotates in a barrel, a backfeed passage within the first screw conveyor and a second screw conveyor in the backfeed passage arranged to recirculate ma-terial in a circuit extending back through the backfeed pas-sage.  The first screw conveyor reciprocates axially so that during periods of non-delivery of plasticated material, the capacity of the circuit is increased to accommodate the accu-mulation of added plasticated material generated by the contin-uous rotation of the first screw conveyor.
Patent CA-1167558-A (CA)
Inventor: LEW YUNG
IPC: H04N1/40
Filed: 1981-04-22
Granted: 1984-05-15
Abstract: ABSTRACT            System and method for reproducing images having areas of different color density scanned by a beam.  A signal corres-ponding to an average level of color density within the target area of the beam is provided and compared with the signal from the central portion of the target area to detect the boundaries between the areas of different color density.
Patent CA-1172266-A (CA)
Inventor: TAHARA YOSHIYUKI
IPC: A61P35/00
Filed: 1981-04-23
Granted: 1984-08-07
Abstract: ABSTRACT OF THE DISCLOSURE          New nonaprenylamine derivatives having the general formula:          (I) wherein R1 represents a hydrogen atom, a nonaprenyl group or a lower alkyl group, and R2 represents a lower alkyl or alkenyl group optionally substituted with at least one hydroxy or alkylamino group, or a cycloalkyl group, and the pharmaceutically acceptable acid addition salts thereof, are prepared by (a) converting nonaprenol of the formula:            (II) into a corresponding halide or arylsulfonic acid ester which is thereafter reacted with a primary or secondary amino corn-pound having the general formula:                                               (III) wherein R1 and R2 have the aforesaid meanings, in the presence or absence of a base, to obtain the desired nonaprenylamine of the formula (I), or (b) oxidizing nonaprenol to a corre-sponding aldehyde which is then condensed with a primary amino compound having the general formula:                          H2N-R2                (III') wherein R2 has the aforesaid meanings, to form a corresponding imino compound which in turn is reduced to obtain a nonaprenyl-amine of the formula (I) in which R1 is hydrogen and R2 has the aforesaid meanings.  When a pharmaceutically acceptable acid addition salt is desired, the nonaprenylamine  of the formula (I) thus obtained is further reacted with a pharma-ceutically  acceptable acid to provide the desired salt. The nonaprenylamine derivatives of the formula (I) are useful for controlling virus infection of vertebrate animals.