baber/WOPTO huggingface dataset:
Patent CA-2025482-A1 (CA)
Inventor: MAUGENDRE STEPHANE
IPC: C03C1/00
Filed: 1990-09-17
Abstract: L'invention a pour objet un procédé permettant de régler le degré d'oxydo-réduction d'un verre lors de son élaboration.      Selon l'invention, qui vise les verres destinés à être transformés en fibres continues ou discontinues contenant au plus environ 1 % en poids de Fe2O3, le degré d'oxydation du verre est obtenu en incorporant dans le mélange de produits vitrifiables au moins deux oxydants, l'un d'entre eux étant un nitrate inorganique, l'autre étant au choix un composé oxygéné du manganèse dans lequel l'état d'oxydation du manganèse est supérieur à 2, le bichromate de potassium et/ou l'oxyde cérique.      L'invention favorise notamment le recyclage de déchets de produits à base de fibres de verre dans le mélange vitrifiable.
Patent CA-2026781-A1 (CA)
Title: Screw and driver
Inventor: SMALL ALAN A
IPC: A61B17/86
Filed: 1990-02-02
Abstract: A screw (20) and driver (50) combination designed so that the screw (20) is releasably axially couplable with the driver (50) and so that the screw (20) is positively rotatably engageable with the driver (50). The screw (20) comprises an axial bore (26) of circular cross section and a counterbore (28) of polygonal cross section. The driver (50) comprises a radially-compressible front portion (66) sized to engage the axial bore (26) of the screw with a minor spring interference fit and an intermediate portion (56) sized to positively rotatably engage the counterbore (28) of the screw (20). The screw (120) and driver (150) may be adapted for use with a guide wire insertion system by providing axial bores (125, 185) extending through the entire lengths of the screw (20) and driver (50). The driver (250) may include a mechanical expansion assembly (297) for causing said front portion to expand radially.
Patent CA-2028269-A1 (CA)
Title: Method and apparatus for sensing loss of regulation in a ferroresonant transformer
Inventor: BOBRY HOWARD H
IPC: G05F3/06
Filed: 1990-10-22
Abstract: A method and apparatus far detecting the loss of regulation in ferroresonant transformer is disclosed. The flux in the magnetic shunts is sensed by a winding. The resulting signal is differentiated. If the differentiated signal contains pulses, regulation is present, if no pulses are found the transformer is not in regulation.
Patent CA-2029796-A1 (CA)
Title: Rotary machine with a rolling piston
Inventor: BOUSSICAULT CHRISTIAN
IPC: F01C1/356
Filed: 1990-11-13
Abstract: ABSTRACT OF THE DISCLOSURE      The rotary machine comprises a cylindrical chamber having a rolling piston rotating therein, the piston rolling against the inside surface of the chamber wall.  In normal operation, springs keep a vane pressed against the periphery of the rolling piston.  A control device for controlling the piston of the vane comprises a control rod lying in the same plane as the vane.  The rod includes a retaining abutment formed at the bottom of the control rod and received in a housing formed inside the vane and including a top wall through which the control rod passes, the top wall co-operating with the abutment and the housing having a vertical extent which is not less than the maximum distance between the peripheral surface of the piston and the casing of the rotary machine, thereby enabling the vane to move freely relative to the abutment when the abutment is in its low position.  Means for selectively controlling the rod enable the vane to be moved to a disengaged position in which it is no longer in permanent contact with the peripheral surface of the rolling piston, thereby preventing the rotary machine from operating at full load.
Patent CA-2032744-A1 (CA)
Title: Internally damped thin-walled, composite longitudinal member having dedicated internal constraining layers
Inventor: SATTINGER STANLEY S
IPC: B32B7/022
Filed: 1990-12-19
Abstract: An internally damped structure having a thin, segmented layer of high modulus composite material acting as a constraining layer and bonded on both sides to layers of viscoelastic damping layers acting as shear layers. The arrangement forms a triple layer sandwich, which is embedded in the wall of the structure. A compliant filler is positioned between adjacent segments of the composite constraining layer.      In an alternate embodiment two such sandwich arrangements are embedded in the wall of the structure.
Patent CA-2037567-A1 (CA)
Title: Edge belt sander with swingable dust hood
IPC: B24B55/08
Filed: 1991-03-05
Abstract: ABSTRACT OF THE DISCLOSURE      A swingable dust hood is provided for use in the dust removal system of an endless belt type working machine.  The dust hood has a jet air cleaner positioned on an inner wall which blows dust and other particles off the workpiece for exhaust via an outlet connected to the dust hood.  A pivot rod is fixed to the outer shell of the dust hood and is rotatably journalled in a pivot receptacle bracketed to the machine support table.  The hood can accordingly be positioned in three primary positions; namely, a first position wherein the hood completely encases a roll when the workpiece does not extend part the form platen; a second position wherein the hood partially encloses the piece when the workpiece is extended past the platen; and a third position wherein the hood is swung back to completely expose the drive roll to permit changing or repair of the endless belt and/or the roll.
Patent CA-2037684-A1 (CA)
Title: Vinyl chloride polymerization process and pvc obtained with said process
Inventor: BORRINI GIANCARLO
IPC: H01B3/44
Filed: 1991-03-06
Abstract: Process for  the  suspension polymerization of vinyl  chloride, either pure or mixed with other monomers, to produce PVC resins. The process uses, as suspending agent, a newly structured polyvinyl alcohol, so as to obtain PVC resins substantially exempt from closed cells and having an improved thermal stability, no electrostatic charges and a low content of ions of alkaline or earthy-alkaline metals, which make them particularly suited for use as insulating materials in the electrical field.
Patent CA-2037802-A1 (CA)
Inventor: IRWIN ROBERT S
IPC: C08G69/28
Filed: 1991-03-08
Abstract: A method is described for preparing high molecular weight polyamides comprising forming a slurry of the dihydrochloride of (see formula) where X is C1, Br or lower alkyl (1-6 C atoms), and y is C1, Br, lower alkyl (1-6 C atoms) or hydrogen in a solvent for the diamine, reacting the dihydrochloride with a tertiary amine in an amount at least equivalent to the HC1 of the dihydrochloride to form free diamine in solution and treating the solution with an aromatic diacid chloride to form the polaymide.
Patent CA-2038048-A1 (CA)
Title: Heavy-load lifting system
Inventor: BACHMEIR XAVER
IPC: F16B21/00
Filed: 1991-03-12
Abstract: ABSTRACT OF THE DISCLOSURE        To lift a heavy load, the load must be coupled to a lifting member, such as a lifting rail.  In accordance with the invention, the coupling is formed by a holder projection (4) with an essentially mushroom-shaped head (10) extending upwardly from the load, for combination and association with a gripper element (5)  extending downwardly from the transport member or rail, positioned to fit over the mushroom-shaped head.  The gripper element includes releasable locking elements.  The gripper element is essentially bell-shaped, with  radial bores through which balls can pass, to fit under the enlarged,essentially mushroom-shaped head (10) and thereby lock the bell-shaped  gripper element and the holder projection together; for unlocking, a sleeve, which  holds the balls in position,is shifted to permit the balls to enter into a recess (9a) into a sleeve, and  permit release of the gripper element from the holder projection. Eight balls, uniformly circumferentially positioned, can lift a load of 20 tons, for example.
Patent CA-2038427-A1 (CA)
Title: Control apparatus
Inventor: TAKAHASHI KAZUNORI
IPC: C02F3/00
Filed: 1991-03-11
Abstract: CONTROL APPARATUS ABSTRACT OF THE DISCLOSURE       A control apparatus controls a system such as a rolling mill or sewage plant on the basis of the data received from that system.  The data is analyzed to derive a characteristic of the data, and then that characteristic is investigated to determine a problem of the system, assuming that a problem exists.  That problem is then automatically analyzed to derive one or more strategies to resolve that problem, and the system may then be controlled on the basis of that strategy.  The analysis may thus be operated automatically, allowing a greater degree of flexibility and responsiveness of automatic control.  A model of the system may be provided in a switchable memory for testing the strategy or strategies derived before applying the optimum strategy to the system.
Patent CA-2040541-A1 (CA)
Title: Method for stripping metals in solvent extraction
Inventor: O'KEEFE THOMAS J
IPC: C22B3/38
Filed: 1991-04-16
Abstract: Aqueous solutions containing metal cations, that may include cations of both desired metal and impurity or secondary metal, are treated with an organic liquid extractant suitable for the extraction of cations of the desired metal, cations of at least one secondary metal being co-extracted. After phase disengagement, the loaded organic phase containing cations of either a desired metal or desired metal together with at least one secondary metal is contacted with a solid metal or solid metal alloy capable of reducing in the organic phase cations of either a desired metal or a secondary metal from a higher to a lower state of oxidation. Depending on the extracted metal(s) and the added solid metal or alloy, cations of the at least ane extracted metal are reduced to the lower state of oxidation and either are deposited (cemented) in the metallic state onto the solid metal or alloy, or are partially reduced in the organic phase to a lower oxidation state with the solid metal or alloy being oxidized in part. The methode of galvanic stripping is carried out at ambient pressures and at ambient or slightly elevated temperatures.
Patent CA-2040714-A1 (CA)
Inventor: DELONG RONALD B
IPC: E04B2/74
Filed: 1991-04-17
Abstract: A  space  dividing  system which includes vertically disposed posts and space dividing panels.  Each post includes  a  center  core  and a plurality of circumferentially spaced, longitudinally extending T-shaped members having  a  stem  or  leg  portion integrally joined to the core, and a flange  spaced outwardly  from the  core.  The space between  the core  and inner surfaces of the flanges defines vertical wire ways.    Each  space  dividing panel has upper  and lower  hook-like connector assemblies fixed to its vertical edges.   The  T-shaped  members  have predetermined portions of their associated flanges removed to define access openings having flange defined support edges for  supporting  the  upper  and lower hook-like connector assemblies.  Flanges of  T-shaped members  not associated with a  space dividing  panel are concealed by one or more post covers having retaining beads which  removably engage lateral edges of predetermined flanges.
Patent CA-2041065-A1 (CA)
Inventor: BECKETT D GREGORY
IPC: B32B15/08
Filed: 1991-04-23
Abstract: ABSTRACT OF THE DISCLOSURE A laminate structure useful for incorporating into a  package  structure  for  the  microwave  cooking  of foodstuffs  for  consumption  comprises  an  outer  layer polymeric  material,  an  outer  layer  of  microwave transparent  material,  a  grid  layer  having  an electroconductive  surface  surrounding  transmissive apertures located between the outer layers, and a thin layer  of  electroconductive  material  of  sufficient thickness so that a portion of incident microwave energy is converted to thermal energy also located between the outer  layers.   The structure is useful in providing controlled surface heating and microwave transmittance to achieve a more uniformly heated product employing less structural material than the prior art.
Patent CA-2042451-A1 (CA)
Title: Halopropargyl compounds, compositions, uses and processes of preparation
Inventor: HSU ADAM C
IPC: C07C323/48
Filed: 1991-05-13
Abstract: ABSTRACT OF THE DISCLOSURE    Compounds of the formula   wherein      A    is selected from the group consisting of (1) phenyl, (2) naphthyl, (3) phenyl substituted with one or more halo, cyano, (C1-C4)alkyl, nitro, (C1-C4)haloalkyl, and (C1-C4)thioalkyl, (4) naphthyl substituted with one or more halo, cyano, (C1-C4)alkyl,nitro, (C1-C4)haloalkyl, and (C1-C4)thioalkyl, (5) thiophene, (6) furan, (7) thiophene substituted with one or more substituents selected from halo and nitro, and (8) furan substituted with one or more substituents selected from halo and nitro;             R is selected from the group consisting of hydrogen, (C1-C4)alkyl and substituted or unsubstituted phenyl wherein the substituents are selected from one or more halo, cyano, (C1-C4)alkyl, nitro, (C1-C4)haloalkyl, and (C1-C4)thioalkyl and R1   is selected from the group consisting of (C1-C4) alkoxy; hydrogerl; optionally substituted phenyl wherein the phenyl substitutents are selected from the group consisting of halo, cyano, (C1-4)alkyl; nitro, (C1-C4)haloalkyl, and (C1-C4)thioalkyl; (C1-C8) alkyl; and optionally substituted heterocycles wherein said heterocycles are selected from the group consisting of thiophene, furan, imidazole, and triazole, which are optionally substituted with (C1-C3)alkyl, halo, and nitro; and X    is selected from the group consisting of I and Br.
Patent CA-2045282-A1 (CA)
Title: Ammonia recovery from purge gas
Inventor: GROTZ BERNARD J JR
IPC: C01C1/12
Filed: 1991-03-28
Abstract: Patent ABSTRACT      A continuous process for recovering ammonia from a purge gas of an ammonia synthesis system wherein the purge gas is scrubbed by an aqueous liquid solution in counter-current flow with continuous cooling which is controlled to maintain temperature levels safely above the freezing point and to produce an aqueous solution of high ammonia concentration which is mixed with an anhydrous ammonia product of the ammonia synthesis system to form a blended ammonia product with a minimum water concentration high enough to provide corrosion protection to carbon steel storage equipment and a maximum water concentration low enough to meet a maximum design specification for the concentration of water in the blended ammonia product.
Patent CA-2045715-A1 (CA)
Title: Error transition mode for multi-processor system
Inventor: STAMM REBECCA L
IPC: G06F12/08
Filed: 1991-06-26
Abstract: ERROR TRANSITION MODE FOR  MULTI-PROCESSOR SYSTEM          ABSTRACT OF THE DISCLOSURE     A pipelined CPU executing instructions of variable length, and referencing memory using various data widths. Macroinstruction pipelining is employed (instead of microinstruction pipelining), with queueing between units of the CPU to allow flexibility in instruction execution times.  A wide bandwidth is available for memory access; fetching 64-bit data blocks on each cycle.  A hierarchical cache arrangement has an improved method of cache set selection, increasing the likelihood of a cache hit.  A writeback cache is used (instead of writethrough) and writeback is allowed to proceed even though other accesses are suppressed due to queues being full.  A branch prediction method employs a branch history table which records the taken vs. not-taken history of branch opcodes recently used, and uses an empirical algorithm to predict which way the next occurrence of this branch will go, based upon the history table.  A floating point processor function is integrated on-chip, with enhanced speed due to a bypass technique; a trial mini-rounding is done on low-order bits of the result, and if correct, the last stage of the floating point processor can be bypassed, saving one cycle of latency.  For CAL type instructions, a method for determining which registers need to be saved is executed in a minimum number of cycles, examining groups of register mask bits at one time.  Internal processor registers are accessed with short (byte width) addresses instead of full physical addresses as used for memory and I/O references, but off-chip processor registers are memory-mapped and accessed by the same busses using the same controls as the memory and I/O.  If a non-recoverable error detected by ECC     circuits in the cache, an error transition mode is entered wherein the cache operates under limited access rules, allowing a maximum of access by the system for data blocks owned by the cache, but yet minimizing changes to the cache data so that diagnostics may be run. Separate queues are provided for the return data from memory and cache invalidates, yet the order or bus transactions is maintained by a pointer arrangement.  The bus protocol used by the CPU to communicate with the system bus is of the pended type, with transactions on the bus identified by an ID field specifying the originator, and arbitration for bus grant goes one simultaneously with address/data transactions on the bus.
Patent CA-2049602-A1 (CA)
Title: Separation process
Inventor: DATTANI PRAVIN K
IPC: C07C17/386
Filed: 1991-08-21
Abstract: SEPARATION PROCESS     Method for separating HFA 134a from a mixture thereof with chlorine-containing halogenated hydrocarbons such as HCFC's 1122, 124, 114, 114a and 133a which comprises adding an extraction agent to the mixture and extractively distilling the mixture in an extractive distillation zone from which HFA 134a containing less than 10 ppm of chlorinated contaminants is recovered.  Suitable extraction agents include trichloroethylene, perchloroethylene, alpha-pinene and cyclohexane.
Patent CA-2052580-A1 (CA)
Inventor: OSBORN CHARLES
IPC: F16H59/74
Filed: 1991-10-01
Abstract: ABSTRACT         A locking mechanism and system for a vehicle shifter in which the shifting lever is locked in a park lock position until the brakes of the automotive vehicle are applied and/or the steering lockout mechanism located in the steering column of the vehicle is released by the ignition key of the vehicle.  In one embodiment of the invention the pawl of the shifting lever is restrained by a lockout arm through which the brake mechanism and the lockout cable extending to the steering column are connected.  In another embodiment, the lockout cable is eliminated by providing two electrical control modules operatively connected to the brake mechanism and the ignition key switch which controls the steering lockout mechanism.  These two modules are connected in a unique circuit 80 that the shifting lever cannot be shifted out of park to other gear positions until the brake is applied and the steering lockout mechanism is released by the ignition key switch.  This system prevents the return of the ignition switch to the lock position until the shifting lever is in the park position.  In other embodiments of this invention, a manual apparatus is provided for retracting the lock pin of a control module to unlocked position.  In still another embodiment, a structure is provided for overriding the extension of the lockout pin of a control module by exerting a greater than normal force on the shifting lever.
Patent CA-2053854-A1 (CA)
Title: Infuser with Balloon for Continuously Infusing Solution of Medicine
Inventor: TSUKADA OSAMU
IPC: A61M3/00
Filed: 1990-02-28
Abstract: An infuser with a balloon for continuously infusing a solution of medicine comprises a tubular main body (1) having a flow path (11) for the solution of medicine which is formed along the longitudinal axis of the body (1). An inlet portion (5) for the solution of medicine having a check valve, an injection port, or a one-way cock (51) is connected to one end of the body (1).  A cylinder (3) with a bottom is slidably connected to the other end of the body (1). The bottom of the cylinder is directed outwardly. The cylinder or the other end of said body is provided with a plurality of holes (31 or 12).  A change-over valve (4) is provided in the flow path (11) at an intermediate portion of the body.  An outlet portion (6) for the solution of medicine is connected to the change-over valve (4).  A control portion (7) for controlling outflow of the solution of medicine is provided in the outlet portion (6).  A balloon (2) made from an elastic material surrounds the holes.  One perimeter (21) of the balloon is air-tightly secured to the outer periphery of the body at a given position and the other perimeter (22) of the balloon is air-tightly secured to the outer periphery of the cylinder at a given position.  In use, a given amount of the solution of medicine is infused into the balloon through the inlet portion.  The solution of medicine in the balloon flows out continuously for a long time through the outlet control portions and a retainer adapted to indwell the human body and attached to the outlet portion.
Patent CA-2054252-A1 (CA)
Title: Process for replenishing metals in aqueous electrolyte solutions
Inventor: DERESPIRIS DONALD L
IPC: C25D3/30
Filed: 1991-10-25
Abstract: PROCESS FOR REPLENISHING METALS IN AQUEOUS ELECTROLYTE SOLUTIONS                            Abstract A method and apparatus are disclosed for replenishing metal ions in an electrolyte depleted of the metal ions.  A preferred example is replenishing tin in the electrolyte of an electrolytic tinning apparatus having an insoluble anode.  The electrolyte thus becomes depleted of tin in the electrotinning process.  The replenishment apparatus comprises an electrolytic cell including a tin anode, a cathode, and an electrolyte chamber for the tin anode and the cathode.  The cathode is a gas diffusion electrode.  An electrical circuit, usually having additional circuit resistance but free of connection to an external power source, connects the anode to the cathode.  The electrolyte chamber has an electrolyte inlet, and an electrolyte outlet which is in flow communication with the electrolytic tinning apparatus.  The gas diffusion electrode is exposed, on its gas side, to a source of gaseous reactant, e.g., oxygen.     When the anode and cathode of the electrolytic cell are connected together electrically, a current flows between the anode and the cathode, without an external power source.  The current flow is at a current density which is effective to dissolve the tin of said tin anode into the electrolyte.  The usual cell cathode reaction involves oxygen reduced to water in an acidic electrolyte.
Patent CA-2057862-A1 (CA)
Title: Filtre respiratoire
Inventor: HICKS RICHARD B
IPC: A61M16/16
Filed: 1990-05-21
Abstract: Un filtre destiné à s'intégrer dans un système respiratoire utilisé en anesthésie et pour la ventilation des patients, se compose d'un boîtier à deux parties (15 et 16) ayant des ouvertures coaxiales (13 et 14) prévues pour la connexion aux tubes respiratoires. Il peut y avoir, accessoirement, un échangeur de chaleur et d'humidité (25) qui traverse le boîtier et qui s'ajoute à un élément de filtre plat (24) situé entre les parties (15 et 16) pour être perpendiculaire à la direction du flux du gaz dans le boîtier. Dans cette invention, des déflecteurs (30 et 19) sont situés près des ouvertures (13 et 14) afin de répandre les gaz d'arrivée sur les surfaces opposées des éléments (24 et 25) afin d'utiliser la totalité de leurs aires de surface, réduisant ainsi la taille globale du filtre et ''l'espace inutilisé de l'appareillage''. Chaque déflecteur possède un trou traversant afin d'utiliser également la zone centrale du filtre. Des ailettes recourbées (26 et 27) tournent dans chaque ouverture (13 et 14). Une autre version de cette invention propose un boîtier avec deux ouvertures situées d'un côté, chacune étant associée à un déflecteur, les ailettes (26 et 27) étant supprimées sur la partie du boîtier comprenant les deux ouvertures.