baber/WOPTO huggingface dataset:
Patent CA-1245293-A (CA)
Title: Transceiver for multi-drop local area networks
Inventor: HILL LAWRENCE W
IPC: H04L12/40
Filed: 1985-03-05
Granted: 1988-11-22
Abstract: TRANSCEIVER FOR MULTI-DROP LOCAL AREA NETWORKS                      ABSTRACT    A multi-drop local area network utilizes alternating current power lines as a transmission channel.   Identical transceivers are used as a master and as up to 255 slaves. Each transceiver comprises modulator and demodulator units and a microprocessor control unit which may be connected to a host.  The modulator and demodulator are connected to the alternating current power line through a high pass filter comprising a split bobbin, iron core transformer having an air  gap  which  also  provides  impedance  matching.   The demodulator  includes  a  clipper  and  analog  circuitry providing a band pass filter and generating a square wave corresponding  to  the  received  carrier.   A  state machine acting  as  a  digital  filter  produces  a  received  carrier signal only when each half cycle of the carrier square wave is of the proper duration and the carrier signal has existed for  slightly more  than one half  of  the  transmitted bit duration, which is a predetermined number of carrier cycles.     The microprocessors are programmed to provide for block ahead acknowledgment, alternate transmissions between master and slaves; each block message comprises an acknowledgment non-acknowledgment bit,  a message sequence bit,  a polling sequence  bit,  and a  longitudinal  redundancy  check.   The carrier frequency utilized lies in the range of 20 to 40 KHz and preferably within the range between 27 and 33 KHz for a power  line  transmission  channel.   Error  free  1200  Baud transmission  rates  are  achieved  in  full  duplex.   Higher carrier frequencies and transmission rates are possible over less noisy transmission channels such as wire pairs.
Patent CA-1242839-A (CA)
Inventor: CHANG WEN-HSUAN
IPC: C09D161/32
Filed: 1985-03-18
Granted: 1988-10-04
Abstract: Abstract of the Disclosure Disclosed is an ungelled, curable, synthetic thermosetting resin, and a method of making the resin.  The ungelled resin is a reaction product of components comprising:  an aminoplast, a hydroxyl-containing carboxylic acid, an alkylenimine, and optionally a polyol.  The disclosure is also directed to a coating composition comprising the ungelled, thermosetting resin.
Patent CA-1230434-A (CA)
Inventor: KOMURO ISAKU
IPC: H04M3/42
Filed: 1985-03-25
Granted: 1987-12-15
Abstract: ABSTRACT OF THE DISCLOSURE      In a key telephone system, when it is impossible to set at a time the entire operation data stored in a memory device of a key station unit by using a key of a specific key telephone set among a plurality of key telephone sets connected to the key station unit, the entire data of respective operation items are divided into a plurality of data sets and then the setting of the data of respective data sets are independently set.  The division of the data of respective operation items is made corresponding to the output state of a hook switch, for example.
Patent CA-1244795-A (CA)
Inventor: DEANE RICHARD
IPC: C25C7/00
Filed: 1985-03-25
Granted: 1988-11-15
Abstract: ABSTRACT OF THE DISCLOSURE          A system for bypassing the current to one or more electrolytic cells of a series of electrolytic cells is disclosed.  A portable assembly includes a rectanglular frame of bus bars capable of carrying the current supplied to a row of cells, means permitting transfer of the assembly by a crane and permitting selectively locating of the assembly in relation to electrolytic cells in a cell house, and contact means for establishing electrical contact between the bypass assembly and electrode contact bars.
Patent CA-1271022-A (CA)
Inventor: TANIKAWA KOICHI
IPC: A44B19/02
Filed: 1985-05-08
Granted: 1990-07-03
Abstract: ABSTRACT OF THE DISCLOSURE     A fluid-tight slide fastener comprises a pair of slide fastener halves each including a support tape, a row of continuous coupling elements extending longitudinally along the inner edge of the tape on one side thereof, and an elastomeric sealing member overlying on the other side of the tape.  The tape has a longitudinal ridge substantially defining the inner edge and supporting the row of coupling elements laterally longitudinally by means of stitching threads.  A portion of the threads is disposed adjacent to the ridge to prevent the latter from moving remotely from the coupling elements row for thereby supporting the ridge intimately enough to ensure the abuttment of opposed sealing edges of the tapes when the fastener halves are coupled together.  The invention simplifies the structure of a fluid-tight slide fastener.
Patent CA-1233546-A (CA)
Inventor: BEATTY ROBERT M
IPC: H02J3/10
Filed: 1985-05-17
Granted: 1988-03-01
Abstract: REMOTE LOAD CONTROL RELAY PROCESSOR                      ABSTRACT OF THE DISCLOSURE         An improved relay actuating processor for a system that remotely control distributed electrical loads. The relay module is a part of a transceiver decoder that receives commands from a central controller for controlling the state of latching relays for controlling the power circuits of the loads.  The improvements include:  the use of a progressively variable pulse length relay actuation signal to shorten perceived response time; the provision of automatic power and reset detective and annunciation; a matrix arrangement for pulsing relays that minimizes the number of relay drivers required for a given number of relays to be controlled; utilizing a power clamp limiting circuit for protecting relay drivers from overcurrent; automatic verification of a control actuation command from the central controller; the use of an improved watch dog reset including AC coupling; warning (flicker) mode operation which provides a warning that lights in a given area will soon go off; and a multi-mode reset arrangement permitting the automatic testing of relays.
Patent CA-1231347-A (CA)
Inventor: LANDAUER FRANZ
IPC: C07C51/363
Filed: 1985-06-18
Granted: 1988-01-12
Abstract: Abstract of the disclosure:   2-Chloropropionic acid is prepared in a high yield and purity by chlorinating propionic acid in the presence of propionic anhydride as the sole additive and with the exclusion of free radical-formers and light, at tempera-tures between about 115 and 140°C.  The reaction product is a valuable intermediate in a variety of fields.
Patent CA-1245972-A (CA)
Inventor: CHEUNG HARRY
IPC: F25J3/04
Filed: 1985-06-20
Granted: 1988-12-06
Abstract: Hybrid Nitrogen Generator With Auxiliary Column Drive ABSTRACT        A cryogenic rectification process to produce nitrogen at relatively high purity and yield employing multiple defined feeds to a main rectification column to allow for increased product removal off the top of the main column.
Patent CA-1249137-A (CA)
Inventor: BECONCINI PAOLO
IPC: D04B15/96
Filed: 1985-06-26
Granted: 1989-01-24
Abstract: ABSTRACT OF THE DISCLOSURE:            Device and process for pulling with reversing for circular knitting frames, consisting of a cylindrical shell coaxial with the cylinder or the cylinders of the frame, and positioned above the plane of formation of the knitted fabric,  of a cylindrical sleeve coaxial with the shell, and suitable to coaxially slide inside it, and of an expandable tensioning piston, coaxial with the sleeve, which, actuated from the bottom, clamps the knitted tubular fabric, by means of its expandable member, inside the sleeve, dragging in its axial movement upwards the sleeve itself, as well as the tubular knitted fabric, on which it exerts the action of pulling with reversing.
Patent CA-1249099-A (CA)
Inventor: KOYANAGI SHUNICHI
IPC: C08F14/06
Filed: 1985-07-17
Granted: 1989-01-17
Abstract: ABSTRACT            Process for production of vinyl chloride polymer This process is a process for production of a vinyl chloride polymer by suspension polymerization or emulsion polymerization of vinyl chloride monomer or a mixture of vinyl chloride monomer with a vinyl monomer copolymerizable with said vinyl chloride monomer in an aqueous medium, characterized in that the polymerization is carried out in a polymerizer, the inner wall surface and portions of the auxiliary equipment thereof which may come into contact with the monomer during polymeri-zation being previously coated with a scaling preventive comprising at least one selected from dyes, pigments and aromatic or heterocyclic compounds having at least 5 conjugated .pi. bonds, while controlling the chloride ion concentration in the reaction mixture to not higher than 100 ppm.  According to said process, scaling onto the inner wall surface of a polymerizer, etc. during polymerization can be prevented effectively and surely.
Patent CA-1238920-A (CA)
Inventor: BEXTEN LUDGER
IPC: C07F15/00
Filed: 1985-08-28
Granted: 1988-07-05
Abstract: NOVEL RECOVERY PROCESS                     ABSTRACT OF THE DISLCOSURE           A process for the purification of salts of at least one member of the group consisting of diphenylphosphine-phenyl -m-sulfonic acid, phenylphosphine-di-(m-phenylsulfonic acid) and triphenylphosphine-tri-(m-sulfonic acid) from aqueous solu-tions thereof comprising adding at least a molar equivalent amount of at least one member of the group consisting of di-(n-pentyl)-amine, di-(n-hexyl)-amine and water-soluble salts of said amines to an aqueous solution containing at least one member of the group consisting diphenylphosphine-phenyl-m-sulfonic acid, phenylphosphine-di-(m-phenylsulfonic acid), triphenylphosphine-tri(m-sulfonic acid)and salts thereof to adjust the pH value to ?7, recovering the precipitate, washing the precipitate and dissolving the same in an aqueous basic solution.     -A-
Patent CA-1244472-A (CA)
Inventor: SINGH BALWANT
IPC: B01J27/00
Filed: 1985-11-14
Granted: 1988-11-08
Abstract: IMPROVED PROCESS FOR PREPARING              PHENYLISOPROPYLUREA COMPOUNDS  ABSTRACT OF THE DISCLOSURE         A new and improved process for making phenyl-isopropylurea derivatives having the formula:       wherein R1 is selected from hydrogen, halogen, alkyl, alkenyl, haloalkyl or R2 groups and R2 is selected from phenyl, alkyl-substituted phenyl alkoxy-substi-tuted phenyl or haloalkyl-substituted phenyl is disclosed.  The process comprises reacting a substituted urea of the formula:                   with an alkenyl aromatic compound of the formula:       in a polar aprotic solvent, in the presence of an acid catalyst, preferably, sulfuric acid, substituted sulfonic acids or Lewis acids, and stirring the reaction mixture at a temperature of about 20  to 80 C until formation of the precipitated phenylisopropylurea derivative is substan-tially complete.
Patent CA-1234782-A (CA)
Inventor: KREISEDER WALTER J
IPC: B65D47/36
Filed: 1985-11-19
Granted: 1988-04-05
Abstract: ABSTRACT OF DISCLOSURE   An end closure for a container comprising an end cap and a cover rotatable with respect to the end cap. The end cap has a raised portion connected to the main part of the end cap by a thinned, severable wall. The raised portion fits within an opening in the end cap, which opening is defined at least in part by a knife edge. Upon rotation of the cover relative to the end cap, the knife edge will cut through the severable wall and sever the raised portion from the end cap. A pour opening is defined in the end cap when the raised portion is severed. When the opening in the cover is aligned with the pour opening in the end cap, the contents of the container may be dispensed. When the opening in the cover is out of registry with the pour opening in the end cap, no contents may be discharged. Complementary inter-engaging flanges on the end cap and cover retain the parts in assembled relationship. In one embodiment of the invention, the opening in the cover includes a flat wall adapted to abut the raised portion and preclude rotation of the cover in one direction until the raised portion is removed. Another embodiment of the invention includes cooperating means on the cover and on the end cap to preclude retrograde motion or reverse motion of the cover with respect to the end cap once cutting of the severable wall begins.
Patent CA-1258029-A (CA)
Title: Assay for nucleic acid sequences, particularly genetic lesions
Inventor: TAUB FLOYD
IPC: C12Q1/68
Filed: 1985-11-22
Granted: 1989-08-01
Abstract: Abstract Lesions in genetic sequences, for example, the sickle cell anemia mutation in the beta globin gene, are detected by means of interactive labels in a nucleic acid hybridization assay. A signal is generated only if the labels are in physical proximity, which is made dependent on whether a predetermined normal or abnormal sequence is present by exposure to appropriate conditions such as restriction enzyme digestion or stringent hybridization.
Patent CA-1246743-A (CA)
Inventor: JENNINGS ANDREW T
IPC: G06F11/25
Filed: 1986-04-03
Granted: 1988-12-13
Abstract: ABSTRACT OF THE DISCLOSURE  AN ARRAY FOR SIMULATING COMPUTER FUNCTIONS         FOR LARGE COMPUTER SYSTEMS           An array of various types of processors for the purpose of simulating computer functions for large computer systems.  These functions may vary from simple AND, OR and other functions to large arithmetic logic units and even random access memories.  The simulation array is a tree-type array where the leaves of the tree are the actual logic simulation processors with the other processors serving as nodes which route change of value notices among the various logic simulation processors.
Patent CA-1255843-A (CA)
Inventor: BISHOP TIMOTHY E
IPC: C08G18/81
Filed: 1986-04-24
Granted: 1989-06-13
Abstract: ULTRAVIOLET CURABLE BUFFER COATINGS FOR OPTICAL GLASS FIBER BASED ON LONG CHAIN          OXYALKYLENE DIAMINES       ABSTRACT An ultraviolet curing liquid coating composition is provided which, when cured with ultraviolet light in the presence of an appropriate photoinitiator, provides a buffer coating for optical glass fiber having adequate strength at room or expected elevated temperature and stability at such elevated temperature, a high index of refraction above 1.48, and a low tensile modulus which remains low to resist microbending difficulties down to around -60°C.  This coating composition consists essentially of a linear acrylate-terminated polyurethane oligomer including urea groups introduced by the presence in the oligomer of the reaction product with isocyanate functionality of about 30% to about 90% by weight of the acrylate-terminated oligomer of a polyoxyalkylene diamine having a molecular weight in the range of from about 1000 to about 8000 in which the alkylene group contains from 2-4 carbon atoms.
Patent CA-1269199-A (CA)
Inventor: SCHILLER JOST H
IPC: C08J9/14
Filed: 1986-05-30
Granted: 1990-05-15
Abstract: POLYMERIZED FOAMED OR REINFORCED TRANSLUCENT      PANELS AND PROCESS FOR MAKING SAME                      ABSTRACT         This invention is directed to a novel trans-lucent polymerized panel which can be used as is or be foamed or reinforced with glass fibre or other types of fibre, or reinforcing materials.  These panels have good light transmitting, weathering and insulating qualities and do not yellow upon prolonged exposure to ultraviolet light.  The invention is directed to a process of pro-ducing an acrylic product which is susceptible to foam-ing upon the application of heat, if a blowing agent is incorporated therein, or can be used with glass fibre reinforcement as a laminating panel. The process com-prises:  mixing an acrylate or methacrylate monomer, a vinyl monomer, vinyl acetate monomer, polyvinyl chloride monomer, or co-monomers thereof, a polymerization initi-ator, a molecular weight controlling agent, a catalyst and a metal substituted organic initiator, and polymer-izing the mixture to produce a polymerized solid clear product.  If required, a blowing agent may be incor-porated in the mixture and the product can be reinforced with glass fibre.
Patent CA-1248147-A (CA)
Inventor: BLAIR JAMES R
IPC: E02F3/36
Filed: 1986-06-06
Granted: 1989-01-03
Abstract: ABSTRACT   A method and apparatus for measuring the quantity of material delivered per cycle by a shovel loader having a bucket 22 that is moved between loaded and unloading positions. During the movement of the bucket in either direction between said positions, determinations are made of the location of the bucket with respect to two spaced points 27 and 17 on the  structure 15 supporting the bucket.  At the  same  time determinations  are made as to the strain at a particular location  in the support  structure 15, that strain being related to total weight of the bucket  and  its contents.  The bucket position determinations  and the strain determinations are each provided as inputs to a processor 95 programmed to calculate  therefrom the weight  of  the  bucket  and contents,  when  loaded  and loaded to thereby provide  the weight  of material delivered.
Patent CA-1263120-A (CA)
Inventor: BOD PETER
IPC: A61P1/04
Filed: 1986-08-22
Granted: 1989-11-21
Abstract: (2-GUANIDINO-THIAZOL-4-YL-METHYLTHIO)-PROPION-AMINIDE     ABSTRACT OF THE DISCLOSURE     A new process is disclosed for the preparation of N-sulfamyl 3-(2-guanidino-thiazol-4-yl-methylthio)-propionitrile (famotidine) of the formula :                    (I) by S-alkylation of 2-guanidino-thiazol-4-yl-methane-thiol obtained from S-(2-guanidino-thiazol-4-yl-methyl)-isothiourea dihydrochloride of the formula:                                       (III) by in situ treatment with a base.  The S-alkylation is carried out with an N-sulfamyl-3-halo-propionamidine of the formula:                     (II) wherein each X stands for halogen.  Famotidine prepared by the process of the invention is useful as an anti-ulcer agent.
Patent CA-1264854-A (CA)
Inventor: SANSONE RONALD P
IPC: G07B17/00
Filed: 1986-12-19
Granted: 1990-01-23
Abstract: MAIL PROCESSING SYSTEM WITH MULTIPLE WORK STATIONS   Abstract of the Disclosure A system for processing batch mail in which the need for on-site inspection is unnecessary.  The mail sender purchases postage from a central station thereby authorizing him to send mail equal to the amount of postage purchased.  The mail sender processes batches utilizing a plurality of work stations.  Each batch is accompanied by a statement summarizing the type and number of mail pieces sent and amount of postage for each batch.  The statement contains data that allows mail payment verification.
Patent CA-1271885-A (CA)
Inventor: WANG CHUN S
IPC: C08G59/06
Filed: 1987-02-10
Granted: 1990-07-17
Abstract: ABSTRACT        Advanced epoxy resin products are prepared by reacting a triglycidyl ether of a trihydric phenol such as the triglycidyl ether of 1,1,1-tri(hydroxyphenyl)-methane with a dihydric phenol such as bisphenol A. These advanced epoxy resins are non-sintering solid resins useful in the preparation of electrical potting or molding compositions.     34,592-F
Patent CA-1257419-A (CA)
Inventor: CORWIN DANIEL W
IPC: H04M3/54
Filed: 1987-03-17
Granted: 1989-07-11
Abstract: Abstract Identifiers for events occurring at a network node are generated responsive to the time of the event, to a telephone number associated with the node, and to an event characteristic.  In a network all of whose nodes use this method, an identifier can be generated at one node without reference to any other node, which will be unique over the network.  An identifier generated by this method can be decomposed to recover the time of the event, the telephone number associated with the node at which the event occurred at the time of occurrence, or the event characteristic.
Patent CA-1260080-A (CA)
Inventor: YUKAWA AKIRA
IPC: H03F3/45
Filed: 1987-09-09
Granted: 1989-09-26
Abstract: TITLE OF THE INVENTION  "OPERATIONAL AMPLIFIER CIRCUIT HAVING WIDE OPERATING   RANGE"            ABSTRACT OF THE DISCLOSURE    An operational amplifier circuit operable with a common-mode input voltage variable over a substantially full range between given source voltages, wherein complementary first and second  differential  transistor  pairs  each  consisting  of transistors having current input terminals connected together are arranged with current mirror circuits and constant-current source devices so that, the first differential transistor pair is  turned off and the  second differential transistor pair operates as input devices for a load circuit when the common-mode input voltage approximates the lower sopurce voltage.  An increase in the common-mode input voltage causes the first differential transistor pair to turn on and gives rise to a decrease in the current flowing through the second differen-tial transistor pair, in which instance the first differential transistor pair compensates for the reduction in the current through the second differential transistor pair by the action of the current mirror circuit associated with the two transis-tor pairs.  The voltage applied to the load device is main-tained  constant  without  respect  to  the  common-mode  input voltage supplied to the differential transistor pairs so that there are no noises generated during transition of the common-mode input voltage through a certail voltage level.
Patent CA-1274131-A (CA)
Inventor: WAKEMAN RUSSELL J
IPC: F02B1/04
Filed: 1988-09-21
Granted: 1990-09-18
Abstract: ABSTRACT     An especially adapted engine valve (28) includes structure which damps motion of the valve (28) during its final closure to seat.  A spool portion (38) of the valve (28) establishes with its associated guideway (42), a damping chamber (40) into which oil under pressure may be admitted via a feed passageway (47).  Oil is discharged through a flow-restricted bleed passageway (48) during closure of the valve (28) so as to create beneficial pressure buildup within the damping chamber (40) and thus reduce the valve's closing velocity.  Since the damping functions occur passively (i.e. dependent only upon the relative location of the valve within its guideway), gentle closing of the valve (28) can occur at any point on the cam (12) lobe thereby making it especially well suited for use in "lost motion" valve control systems.
Patent CA-1095161-A (CA)
Inventor: PATTERSON FRANKLIN G
IPC: G01S7/52
Filed: 1960-08-13
Granted: 1981-02-03
Abstract: ABSTRACT OF THE DISCLOSURE             An improved underwater object locating system uses reflected acoustic signals to guide a torpedo with respect to an object. The system employs a transducer consisting of two halves arranged vertically and twisted about a vertical axis with respect to each other. The transducer thus transmits a signal in the form of two horizontally angularly-displaced overlapping acoustic lobes. A zimuth information concerning the object is provided in terms of the relative magnitude of signals received by the two halves . Elevation information is provided in terms of the relative phase between the two signal. Each half of the transducer has a plurality of magnets-strictive elements, each having multiple windings thereon. Corresponding first windings on an elements or each half are connected in series, the windings of the two halves being connected in parallel for transmission of a signal. For reception of a signal the two halves are used separately, corresponding second windings on all elements of each half being connected in series and in series with additional windings of selected elements of the other half of the transducer.
Patent CH-495148-A (CH)
Title: Artificial teeth
Inventor: BENJAMIN DAVID HALPERN
IPC: A61K6/06
Filed: 1969-01-27
Abstract: Teeth are formed of an outer sheel of porcelain and a core of reinforced coarse porcelain or synthetic resin or combination of coarse porcelain and resin, the synthetic resin core in contact with the porcelain being bonded chemically to the porcelain using a polymerisable organic silicon compound.