baber/WOPTO huggingface dataset:
Patent CA-1298647-C (CA)
Title: Polarizing apparatus and method utilizing an optical fiber
Inventor: SORIN WAYNE V
IPC: G02B6/10
Filed: 1987-02-25
Granted: 1992-04-07
Abstract: POLARIZING APPARATUS AND METHOD               UTILIZING AN OPTICAL FIBER Abstract of the Invention An apparatus selectively transmits light in one of two orthogonal  polarizations  in  an  optical  fiber.    The apparatus has a facing surface formed at one location on the fiber  to expose the evanescent field of an optical signal in the fiber.  A nematic liquid crystal is placed in  contact  with  the  facing  surface  so  that  it  is  in communication with the evanescent  field of  the optical signal.   The nematic crystals have a first orientation state which presents a first refractive index to light traveling  in  one  polarization  and a  second  refractive index to light traveling in the other polarization.  The light traveling in one polarization is well guided while the light traveling in the other polarization is radiated at  the  facing  surface.     Thus r only  light  of  one polarization continues  to propagate through  the  fiber. The nematic crystals have a second orientation state in which  the  relative  refractive  indices  for  the  two polarizations   of   light   are   changed   so  that   the polarization which was originally well guided is radiated at  the  facing  surface  and  the  polarization which  was originally radiated is well guided.   The change in the orientation states of the nematic crystals is accomplished by applying an electric field between two electrodes so that  the  nematic  crystals  align  themselves  with  the electric field.           UA-46B:cc2/dmw3
Patent CA-1284174-C (CA)
Title: Storage battery having a protective shield
Inventor: ABRAHAM CARL J
IPC: H01M50/147
Filed: 1987-05-04
Granted: 1991-05-14
Abstract: STORAGE BATTERY HAVING A PROTECTIVE SHIELD        Abstract of the Disclosure A storage battery (10,40) provided with a cover (20,53), having an inverted generally U-shaped cross-section, located over the top wall (11,43) of the battery casing, both ends of the cover being open.  The cover may be formed integrally with the casing top wall, or it may be a separate member.  If a separate member, resilient straps (30) or other retaining elements are employed to secure the cover to the battery casing, and ribs (23) or other positioning elements carried by the cover engage the casing and space the cover from the casing top wall.  Preferably, the cover is semi-cylindrical, is imperforate, and if a separate element, may be flexible.
Patent CA-1296945-C (CA)
Title: Processing paper and other webs
Inventor: BOWMAN KENNETH ALBERT
IPC: B41F5/06
Filed: 1987-05-13
Granted: 1992-03-10
Abstract: PROCESSING PAPER AND OTHER WEBS                ABSTRACT OF THE DISCLOSURE    A printing apparatus has an array of cartridges for printing a web of e.g. paper passing through the array, and one or more units containing printing medium.  The cartridges each are capable of transferring the printing medium from the unit(s) to the web.  The unit(s) and the cartridges of the array are relatively movable, to allow the unit(s) to interact successively with at least two of the cartridges.  In this way it is possible to change printing from one cartridge to another, allowing changes to be made to what is printed, without halting the movement of web significantly.  The present invention also proposes that the cartridges may have printing cylinders of different sizes, and furthermore that a mobile unwind stand may be used to move web material to the printing apparatus, and the web output from the printing apparatus processed by sheet folding techniques.
Patent CA-1326660-C (CA)
Inventor: BAILEY THOMAS F
IPC: E21B10/20
Filed: 1987-08-12
Granted: 1994-02-01
Abstract: ABSTRACT OF THE DISCLOSURE       An  underreamer  including  a  body  having  a  bore therethrough, an arm mounted at its upper end to the body, a sleeve member detachably secured to the lower end of each arm and adapted to receive the frictional wear caused by the rotation of the conical cutter mounted thereto. Bearings and seals disposed between the cutter and the sleeve member provide smooth rotation of the cutter.  In addition, means extending between the arm and the sleeve member  secure  the  sleeve  on  the  arm.   The  arms  are pivotally mounted in slots  in the body and means are provided for moving the arms to their cutting position with their lower ends positioned radially outward from the body.
Patent CA-1276694-C (CA)
Title: Operational amplifier
Inventor: ROESSLER BERNWARD
IPC: H03F3/45
Filed: 1987-09-24
Granted: 1990-11-20
Abstract: ABSTRACT OF THE DISCLOSURE     An operational amplifier of the folded-cascode type with: push-pull output terminals; a differential-input transistors; a load impedance in the form of a cascode current source coupled to the differential-input, and a dynamic common-mode negative feedback.  A current source transistor in the cascode current source is incorporated into the dynamic common-mode negative feedback.
Patent CA-1282817-C (CA)
Title: Compressor terminal block and overload protector assembly
Inventor: ORTIZ ARTURO L
IPC: H02H7/085
Filed: 1987-10-01
Granted: 1991-04-09
Abstract: ABSTRACT A terminal block (40) and overload protector for a compressor assembly for connection to the terminal pin assembly (28) of a compressor located on the inside wall of a compressor casing (12).  The assembly includes a housing (42) with three apertures (44) therein into which three of the terminal pins are disposed.  Electrical connector clips (46) are disposed in the housing for connection to the terminal pins.  The housing also includes a space in which a motor protector (56) is secured.  The motor protector has two terminal pins (64, 66) which are secured to slip-on quick-connect terminals (82, 84). The motor protector housing has a third connector clip secured thereto. Each of the three connector clips has a knurled inside surface for gripping and retaining of the respective terminal pins.
Patent CA-1323189-C (CA)
Inventor: FEL JEAN-LOUIS
IPC: A43C15/00
Filed: 1987-10-09
Granted: 1993-10-19
Abstract: Dispositif antidérapant fixable à une chaussure au moyen de sangles, comprenant essentiellement une surface anti-dérapante solidaire d'un patin. La surface antidérapante est constituée d'au moins une couche de matériau alvéolaire élastique à cellules ouvertes et de faible densité.
Patent CA-1290292-C (CA)
Inventor: MUNTHE BERT A
IPC: B65D47/06
Filed: 1987-11-23
Granted: 1991-10-08
Abstract: ABSTRACT OF THE DISCLOSURE         This invention relates to improvements in valve-controlled apparatus used to deliver liquids from bottles, cans, and other containers.          According to a recently developed system for mixing concentrates with a solvent, the concentrates are delivered from large containers to a mixing vessel by means of tubes which are connected to both the containers of concentrate and the mixing vessel.  In order to replace an empty container, the tube is detached from the container, the container is disposed of, and a full container is reattached to the tube.  During the interval of time that the container is being replaced, it frequently happens that residual concentrate in the tube leaks onto the floor where the concentrate-containing containers are located.          This invention provides a system for storing and transferring liquid comprising a container for storing liquids, a delivery tube assembly for drawing liquids from said container and transferring said liquids to a second vessel, and, disposed at one end of said delivery tube assembly, a shut-off valve that comprises a casing having a first opening at one end thereof for allowing liquid to enter said casing, a valve head which is normally covering said opening, and a means for biasing said valve head toward said first opening in order to cover same.  The container has an actuating means, e.g. a projection, formed on or near the bottom portion thereof, which means actuates the valve head to allow the shut-off valve to open, thereby allowing liquid to be drawn into the first opening in the casing, pass through the casing, and then pass through a second opening in the casing to enter the delivery tube assembly.  When the delivery tube assembly and shut-off valve are removed from the container, the valve head closes over said first opening, thereby preventing residual liquid present in the delivery tube assembly from leaking from the tube.
Patent CA-1298470-C (CA)
Title: Air conditioner and method of dehumidifier control
Inventor: SHAW ALLAN
IPC: F24F11/02
Filed: 1987-11-24
Granted: 1992-04-07
Abstract: A B S T R A C T     An air conditioner dehumidifier comprising coil portions cooled by chilled water or refrigerant. The number of coil portions which are active is related to the extent of sensible cooling required over an air conditioning environmental range, increasing to meet more sensible cooling requirements. Coolant flow decreases towards shut-off in one active portion upon reduction of sensible cooling requirements, whereupon controls effect increased coolant flow in the remaining coil portions, increasing the heat transfer coefficient and thereby dehumidification so that the ratio of latent to sensible cooling is increased.
Patent CA-1296638-C (CA)
Title: Agent for prophylaxis and treatment of heart failure
Inventor: KUBO MASAMI
IPC: A61K31/415
Filed: 1987-12-08
Granted: 1992-03-03
Abstract: Abstract:         The present invention is directed to novel agents for the prophylaxis and treatment of heart failure, which comprise as active ingredients a 2-oxo-imidazolidine compound of the formula:                        (I) wherein R1 and R2 are the same or different and each represent a lower alkyl group, R  is a phenyl-substituted lower alkyl group, and R4 is a hydrogen atom or a lower alkyl group, or a pharmaceutically acceptable salt thereof.
Patent CA-1305059-C (CA)
Title: Stabilized menadione bisulfite formulations and their preparation
Inventor: KIEFER HANS
IPC: A61K31/12
Filed: 1988-01-11
Granted: 1992-07-14
Abstract: O.Z. 0050/38905 Abstract of the Disclosure:  Powdered and/or granulated menadione sodium bisulfite formulations additionally con-tain a physiologically tolerated organic or inorganic acid.        The novel formulations possess good water solu-bility and stability.
Patent CA-1302488-C (CA)
Inventor: NORTH JOHN M
IPC: H01M10/052
Filed: 1988-02-08
Granted: 1992-06-02
Abstract: ABSTRACT OF THE DISCLOSURE      A solid polymer electrolyte for a solid state electro-chemical cell comprises a complex of a solid polymer such as poly(ethene oxide) and an alkali metal salt such as LiClO4, which polymer is capable of forming donor: acceptor type bonds with alkali metal ions and is capable of conducting alkali metal ions, the complex being associated with a mixture of more than one 1,3-dioxolane--2-ones, for example ethylene carbonate and propylene carbonate, such that the electrolyte possesses satisfactory ambient temperature ionic conductivity (eg 10-3 to 10-4 ohm-1 cm-1) and a cell including the electrolyte substantially maintains its discharge capacity at ambient temperature after repeated charge/discharge cycling.
Patent CA-1304198-C (CA)
Inventor: COUDERC PIERRE
IPC: C10C3/00
Filed: 1988-03-18
Granted: 1992-06-30
Abstract: This binder pitch, which has a KS softening point of between 60 DEG C and 80 DEG C and a content of quinoline-insoluble substances lower than or equal to 7% by weight, is characterised in that its filterability index is higher than or equal to 4.5. To prepare it, a tar or a pitch which has a KS softening point of not more than 60 DEG C and a content of quinoline-insoluble substances lower than or equal to 7% by weight is subjected to a heat treatment capable of removing a substantial proportion of its constituents with a molecular mass lower than 1200.
Patent CA-1286538-C (CA)
Title: Vertical hydro-hoist and method of operating the same
Inventor: UCHIDA KENJI
IPC: B65G53/30
Filed: 1988-03-21
Granted: 1991-07-23
Abstract: ABSTRACT OF THE DISCLOSURE    A vertical hydro-hoist for conveying a slurry under pressure by using a liquid obtained from a chemical process as a driving liquid and method  for operating the same,  the hydro-hoist includes at least one feed chamber and a detector for detecting a relationship of specific gravities between a driving liquid, a slurry and a float desporent in the at least one feed chamber.          A holding member is provided for holding the float and a device, provided  for  supplying  or  discharging  a  specific  gravity adjusting liquid into and out of the float.  After temporarily holding the float in the feed chamber, the adjusting liquid is supplied into or discharged out of the float in accordance with the relationship detected by the detector.
Patent CA-1300587-C (CA)
Title: Functional fluids
Inventor: MILES PETER
IPC: C10M169/04
Filed: 1988-05-19
Granted: 1992-05-12
Abstract: 3-16478/1+2/=/MA 1900 Abstract of the Disclosure Functional Fluids A functional fluid comprising:   a) a base fluid selected from one or more of i) a phosphate fluid and ii) a carboxylic acid ester; and b) as hydrolytic stabiliser, at least one compound having the formula I:               A-NHC(=X)NHZ                            (I), in which A is hydrogen, C1-C12alkyl, C3-C18alkenyl, C6-C10aryl, C7-C13-alkaryl, C7-C13aralkyl or C5-C12cycloalkyl; X is oxygen, sulphur or NH; and Z is H, NH2 or -N=CR1R2 in which R1 and R2, independently, have any of the meanings assigned to A, or R2 is H, or R1 and R2, together with the carbon atom to which they are each attached, may form a C5-C12 ring.
Patent CA-1283707-C (CA)
Title: Receiver for a phase-shift keyed carrier signal
Inventor: JANSSEN GERARDUS J M
IPC: H04L27/227
Filed: 1988-05-30
Granted: 1991-04-30
Abstract: PHN 12.144                                           24.05.1988 Abstract: "Receiver for a phase-shift keyed carrier signal."     A receiver for a PSK-signal includes a demodulator (DEM) for obtaining demodulated data signal which after regeneration in regeneration means (HL, DR, TU) is applied to a remodulator (REM) for PKS-remodulation of the received PSK-signal to produce thereby a carrier component that is applied as an input signal to a phase-locked loop (PLL) in which a local carrier generator (VCO1) is included. The reliability of the carrier recovery for low SNR-values can be improved by implementing the regeneration means (DR, TU) also for the generation of delayed (.ANG.L) and advanced (âE) versions of the regenerated data signal (âR), and by providing the receiver in addition with means (CTU), responsive to the received PSK-signal, the local carrier and the delayed and advanced data signal versions (.ANG.L, âE), for generating a control signal (RL-RE) for a local clock generator (VCO2) connected to the regeneration means (TU, DR).
Patent CA-1309404-C (CA)
Title: Process for purifying caprolactam
Inventor: SENNI PAOLO
IPC: C07D223/10
Filed: 1988-07-26
Granted: 1992-10-27
Abstract: ABSTRACT OF THE DISCLOSURE:           The present invention relates to a process for purifying   caprolactam   (CL)   obtained   by   Beckmann transposition or by nitrosation of cyclohexylic compounds, characterized in that it is performed in the following steps:  (a)  the caprolactam oil is treated with ammonia up to a pH comprised between 8 and 10 and at least one surface-active agent is added;   (b)   the caprolactam in aqueous-ammoniacal  solution  obtained  in  (a)  is  extracted  with toluene;  (c)  the caprolactam in toluene solution according to (b) is extracted with water;  (d) the product extracted in (c) is dehydrated by water distillation and is rectified in vacuum, in packed columns, with separation of the low-boiling  and  high-boiling  byproducts  in  two  successive phases;   (e)   the caprolactam obtained in (d) is treated with (a), an alkaline and/or alkaline-earth hydroxide, until an a/CL weight ratio  comprised between 0.0125 and 0.100 equivalents  of  (a)  per  kg  of  CL  is  obtained,  and  is subsequently kept under mixing in an inert-gas atmosphere mixing for at least 150' at a temperature comprised between 80°  and  160°C;    (f)   the mixture obtained  in  (e)  is rectified in vacuum, obtaining pure caprolactam.
Patent CA-1297274-C (CA)
Title: Methods and apparatus for making electrical cable
Inventor: PAN ALI
IPC: H01B13/26
Filed: 1988-08-24
Granted: 1992-03-17
Abstract: METHODS AND APPARATUS FOR MAKING ELECTRICAL CABLE   Abstract of the Disclosure In the making of an electrical cable, a metal shield is formed by wrapping metal strip around a cable core with longitudinal edges of the strip overlapping.  The strip is corrugated with the corrugations nesting in the overlapped regions.  A shield gap filler is provided by extruding a heated molten plastics material and directing it between the overlapped regions.  Upon cooling, the filler hardens and bonds the edges together.  A cable jacket is extruded around the shield.     - i -
Patent CA-1313936-C (CA)
Title: Transverse pocket forming machine
Inventor: FARRINGTON ALLAN P
IPC: A61F13/15
Filed: 1988-09-20
Granted: 1993-03-02
Abstract: ABSTRACT A pad is formed by feeding separate supplies of fibrous material  into contact with two separate  lickerins that are parallel to each other and rotated toward each other.   The fibers from the two lickerins pass through a mixing zone and are accumulated in pocket molds moving on a conveying screen that is moved parallel to the axes of the lickerins.  A baffle plate may be inserted into the mixing zone and acts to control the lateral or cross-sectional composition of a web formed by the fibers accumulated in the molds.   When different fibrous materials  are  fed to the lickerin  along their length,  the vertical composition of the web is altered.   Because of the pocket  molds  the  pads  are  formed  as  individually  shaped products.
Patent CA-1327951-C (CA)
Title: Isolates of bacillus thuringiensis having activity against the alfalfa weevil, hypera brunneipennis
Inventor: SOARES GEORGE G
IPC: A01N63/23
Filed: 1988-10-25
Granted: 1994-03-22
Abstract: Abstract of the Disclosure Novel  Bacillus  thuringiensis  (B.t.)  isolates  are disclosed and claimed.   These novel B.t.  isolates have activity against the Egyptian alfalfa weevil,  which is known to cause heavy agricultural losses.
Patent CA-1332099-C (CA)
Inventor: HORVATH EDUARD
IPC: F16F9/44
Filed: 1988-10-28
Granted: 1994-09-27
Abstract: ABSTRACT OF THE DISCLOSURE    A hydraulic controller for the motion of the prosthetic joint comprises a piston-and-cylinder unit whose working chambers on opposite sides of the piston are connected to each other by a connecting passage and to a compensating chamber which stores a volume of hydraulic fluid to compensate for the difference in the volumes of the cylinder chambers resulting from the fact that the piston rod passes through one of them.  Regardless of the direction of movement of the piston in the cylinder, utilizing checkvalves and adjustable throttle elements, the flow is controlled between the chambers so the separate throttle elements can effectively control the opposite movements while checkvalves permit filling of chambers.
Patent CA-1313577-C (CA)
Title: Low temperature recovery of kraft black liquor
Inventor: VAN HEININGEN ADRIAAN R P
IPC: D21C11/12
Filed: 1988-11-17
Granted: 1993-02-16
Abstract: ABSTRACT         A kraft black liquor recovery system utilizing three separate reactors for liquor pyrolysis, sulfate reduction and carbon plus organics combustion, respectively.  Oxidized black liquor is pyrolyzed in a fluid bed reactor.  The temperature in the fluid bed reactor is 600°C or lower.The resulting char, containing Na2CO3 and Na2SO4 and a significant amount of carbon,  is separated from the pyrolysis gases and introduced in an indirect heated reactor where reduction of Na2SO4 to Na2S takes place in the solid state under an atmosphere generated by the reduction.   The reduced char is cooled and leached to produce green liquor.  The leached char and gases from the pyrolysis and reduction reactors are burned in a fluid bed combustion unit operating below the melting point of mixtures of Na2CO3 and Na2SO4.  The fluid bed particles, consisting mainly of Na2CO3 and Na2SO4, serve to remove the volatile oxidized sulfur species formed by combustion of the pyrolysis gas.  The overflow of pellets are ground and dissolved in the incoming heavy black liquor feed.
Patent CA-1312414-C (CA)
Inventor: COOMBS CHRISTOPHER E
IPC: A42B3/00
Filed: 1988-12-19
Granted: 1993-01-12
Abstract: ABSTRACT OF THE DISCLOSURE There is disclosed an improved protective helmet assembly including an outer shell and an inner impact attenuation liner assembly wherein a chinstrap assembly is mounted to the inner impact attenuation liner assembly and the inner impact attenuation liner assembly is mounted within the outer impact shell to detach under predetermined load conditions from the outer impact shell.
Patent CA-1317742-C (CA)
Title: Medical fastening and clamp system
Inventor: HAJDUCH JAMES D
IPC: A61M39/00
Filed: 1989-01-16
Granted: 1993-05-18
Abstract: MEDICAL FASTENING AND CLAMP SYSTEM          ABSTRACT OF THE INVENTION     An improved pressure clamp is disclosed which comprises first and second frame portions, a cradle system secured to the second frame portion and being capable of acting to hold a member, e.g., human extremity, on which pressure is to be applied; and a pressure head capable of being secured to the first frame portion at different positions along the length of the first frame portion and being capable of acting to contact the member being held by the cradle system whereby the desired pressure is applied to the member.
Patent CA-1339025-C (CA)
Inventor: ASANUMA TADASHI
IPC: C08F297/06
Filed: 1989-02-28
Granted: 1997-03-25
Abstract: This invention provides a block copolymer of propylene obtained by polymerizing .alpha.-olefins mainly comprising propylene in the presence of a catalyst comprising a transition metal catalyst and an organo-metal compound and thereafter copolymerizing .alpha.-olefins mainly comprising propylene and ethylene, in which polymerization steps an alkenylsilane is copolymerized, and a process for the production thereof.
Patent CA-1328770-C (CA)
Inventor: BONIELLO BARBARA
IPC: A23L27/24
Filed: 1989-03-07
Granted: 1994-04-26
Abstract: NATURAL BUTTERY COFFEE FLAVOR BY FERMENTATION    ABSTRACT   A buttery and/or winey flavor of which diacetyl and acetoin are the major flavor constituents is produced by the fermentation of a coffee substrate.  The process involves forming a nutrient media containing water and soluble coffee solids as the nutrient component, the soluble solids concentration being at least 0.5%.  A microorganism which is either a strain of lactic acid producing bacteria or yeast capable of producing diacetyl is added the nutrient media and the combination is mixed and simultaneously placed into an environment of a pH of from 4.0 to 7.0 a temperature of from 16 to 37°C, for a period of time effective to produce diacetyl and aeration conditions wherein the nutrient media contains sufficient oxygen to allow for diacetyl production.  The afore-mentioned process will produce diacetyl and acetoin.  The diacetyl which is produced is recovered and or concentrated and added to a coffee product.
Patent CA-1302463-C (CA)
Title: Cable-actuated electrical safety switch device
Inventor: PICCOLI JEAN-LUC
IPC: H01H15/10
Filed: 1989-03-22
Granted: 1992-06-02
Abstract: ABSTRACT           CABLE-ACTUATED ELECTRICAL SAFETY SWITCH DEVICE          A piston operated by a cable stretched out within hand reach along a dangerous zone actuates a tappet whose movements is transmitted to the switch. A slider compresses a spring until in a first phase a pawl prevents the return of the tappet whereafter in a second phase the force of the spring exceeds the force necessary to retract the pins of a striker which is therefore released abruptly to operate the switch. To restore the device to its standby state, a lock plug carrying a cam adapted to release the pawl from the groove in the slider is rotated by means of a key, whereby the device indicates any operation it has made, in order to make it impossible to simulate a stoppage without leaving any trace.