baber/WOPTO huggingface dataset:
Patent CA-1291358-C (CA)
Title: Method and apparatus for preventing cabin depressurization
Inventor: GOODMAN ROBERT B
IPC: B64D13/04
Filed: 1988-03-31
Granted: 1991-10-29
Abstract: Abstract Method and Apparatus for Preventing Cabin Depressurization An environmental control system (ECS) (10) utilizes an override valve (25) to prevent accidential aircraft cabin (16) depressurization.  An ECS override valve (26) determines the difference between the pressure of air in a cabin and the pressure of air input to the cabin.  If the pressure of the air input to the cabin is less than a given amount more than the pressure of the air in the cabin, the valve interrupts a lower pressure signal provided by the pilot so that the pressure of the air input to the cabin is greater than the given amount more than the pressure of the air in the cabin.
Patent CA-1302683-C (CA)
Title: Process on or with liquid
Inventor: DODSON CHRISTOPHER E
IPC: B01F33/40
Filed: 1988-04-08
Granted: 1992-06-09
Abstract: ABSTRACT                                  (Figure 2) PROCESS ON OR WITH LIQUID      A method of carrying out a process on or with liquid  comprises  moving  a  bed  of  the  liquid  in a band 28 continuously along an annular path defined in  a  chamber  12  by  passing  fluid  38  having both circumferential   and   vertical   components   through the  bed  along  the  path  during  the  carrying  out of the process.
Patent CA-1298849-C (CA)
Title: Aromatic diamines containing sulfonic acid aryl esters, a process for their production and their use in the production of polyurethane plastics
Inventor: SANDERS JOSEF
IPC: C07C309/73
Filed: 1988-04-21
Granted: 1992-04-14
Abstract: Mo-3031 AROMATIC DIAMINES CONTAINING SULFONIC ACID ARYL ESTERS, A PROCESS FOR THEIR PRODUCTION AND THEIR USE IN THE         PRODUCTION OF POLYURETHANE PLASTICS             ABSTRACT OF THE DISCLOSURE The present invention is directed to new aromatic diamines containing sulfonic acid aryl esters corresponding to the formula   wherein R1  represents hydrogen, an optionally branched C1-C6 alkyl radical (preferably a methyl group), a C1-C6 alkoxy radical or a halogen atom (preferably chlorine) and R2 and R3 which may be the same or different, represent hydrogen, an optionally branched C1-C20 (preferably C1-C6) alkyl radical, a C1-C6 alkoxy radical or a halogen atom (preferably chlorine).    The present invention is also directed to a process for the production of the above aromatic diamines containing sulfonic acid esters by the reaction of optionally substituted sulfochlorides with optionally substituted phenols followed by hydrogenation.         Finally, the present invention is directed to the use of aromatic diamines containing sulfonic acid aryl esters as a synthesis component for the production of polyurethane plastics by the isocyanate polyaddition process.          Le A 25 211
Patent CA-1310222-C (CA)
Title: Hitch adapter for use in connecting semi-integral, pto-driven implements to tractor three-point hitch
Inventor: STEPHENSON ROGER D
IPC: A01B71/06
Filed: 1988-05-18
Granted: 1992-11-17
Abstract: HITCH ADAPTER FOR USE IN CONNECTING SEMI-INTEGRAL, PTO-DRIVEN             IMPLEMENTS TO TRACTOR THREE-POINT HITCH                  Abstract of the Disclosure A hitch adapter couples a semi-integral, PTO-driven implement to a quick coupler carried by a tractor three-point hitch.  The hitch adapter includes a drawbar located significantly below the level of the connection of lower three-point hitch link with the quick coupler and a parking stand is integral with the bottom of the drawbar.  Lowering of the three-point hitch from a normal working position results in the stand engaging the ground to prevent interference between the hitch and the drive shaft coupling the implement to the tractor PTO shaft.  Once the stand engages the ground, the hitch adapter can be disconnected from the quick coupler hooks by releasing latches associated with the lower hooks and lowering the three-point hitch.
Patent CA-1316948-C (CA)
Title: Sintered ceramic product
Inventor: SONNENBERG NEVILLE
IPC: C04B35/48
Filed: 1988-06-23
Granted: 1993-04-27
Abstract: ABSTRACT OF THE DISCLOSURE            The invention provides a sintered ceria/zirconia ceramic and a method of making it. The product comprises a substantially homogeneous mixture of 76 - 92 mole % zirconia, 8 - 20 mole % ceria and 0.1 - 4 mole % lanthana and/or praesodymia. The method involves heating an artifact comprising said mixture to a temperature in the range 1200- 1700°C.
Patent CA-1288121-C (CA)
Title: Dual fluid atomizer
Inventor: BAILEY RALPH T
IPC: B01F25/46
Filed: 1988-06-24
Granted: 1991-08-27
Abstract: ABSTRACT           An atomizer comprises a cylindrical mixing chamber with open entry and discharge ends.  An inner barrel for a slurry or fluidized dry powder is connected to the entry end for supplying the slurry or fluidized fine powder into the mixing chamber.  One or more atomizing gas ports extend at an angle into the mixing chamber for supplying atomizing gas to be thoroughly mixed with the slurry or fluidized dry powder in the mixing chamber.  The atomizing gas ports are spaced upstream from the discharge end by from one to five times the diameter of the mixing chamber, and downstream from the entry end.  A larger diameter volume chamber communicates with the discharge end of the mixing chamber and has at least one nozzle which permits the homogenized mixture to exit therefrom.  An impact surface is positioned opposite the discharge end.  The at least one nozzle is positioned around the impact surface.   Critical dimensional and positional  features  for the mixing and volume chambers, the atomizing gas ports, and the at least one nozzle produce efficient atomized sprays even at low flow velocities for the slurry or fluidized dry powder and the atomizing gas.
Patent CA-1313337-C (CA)
Title: Fuel pre-heater for liquid fueled engine
Inventor: REISER PETER
IPC: B60H1/22
Filed: 1988-06-30
Granted: 1993-02-02
Abstract: ABSTRACT OF THE DISCLOSURE      A heating device for pre-heating liquid fuel,  especially diesel fuel and for heating devices of a low heating performance which are independent from a motor have a heating performance which is suitable for mounting into vehicles, which are driven by the liquid fuel.  The pre-heating is effected by a transmission of heat of the exhaust gas to the fuel of the heating device, the fuel being lead through a continuous tubular wrapping in one layer or through a hollow cylinder formed or positioned around the exhaust pipe. This wrapping or hollow cylinder is part of the fuel main from the fuel tank to the fuel supply pump of the heating device.  A pre-heating of the content of the tank is effected by the return of the pre-heated,  but not burnt fuel through  a  fuel  return  main  back  into  the  tank.    A  heat transmitting  jacket  is  advantageously  disposed  between  the wrapping, or a hollow cylinder and the exhaust gas pipe.
Patent CA-1330963-C (CA)
Title: Process for electroplating metals
Inventor: BROWN CRAIG J
IPC: C25D21/12
Filed: 1988-07-07
Granted: 1994-07-26
Abstract: ROGERS, BERESKIN & PARR                        C A N A D A     Title: PROCESS FOR ELECTROPLATING METALS               Inventor: CRAIG J. BROWN     ABSTRACT OF THE DISCLOSURE        A process for electroplating metals in an electro-plating bath having an anode and a cathode. The cathode is formed by a workpiece to be plated and the anode includes soluble material in the form of the metal to be plated and insoluble material in  a proportion  selected  so  that  the anode efficiency equals the cathode efficiency This avoids metal salt build-up in the bath. Metal salt solution carried out of the bath with the workpiece is recovered and recycled to the bath, avoiding loss of metal to the system and waste disposal problems.
Patent CA-1330224-C (CA)
Title: Release mechanism for a high speed circuit breaker
Inventor: DUFFOUR HENRI
IPC: H01H71/50
Filed: 1988-07-21
Granted: 1994-06-14
Abstract: ABSTRACT OF THE DISCLOSURE           A release mechanism for a high speed circuit breaker comprises a roller rotatably supported on an axle in a mobile contact bridge.  A jack is acting in the circuit closing direction on the roller, and the frontal side of the jack is in the form of a slide.  The force of a disconnecting spring acts on the contact bridge in a disconnecting direction.  The release mechanism to be provided with the connected contact bridge is capable of very rapid release, so that high short circuit currents may be interrupted very rapidly.  This is obtained by the slide having a configuration such that in the connected state of the contact bridge the frictional forces acting on the roller are compensated.
Patent CA-1317784-C (CA)
Title: Laser-doppler-anemometer
Inventor: DOPHEIDE DIETRICH
IPC: G01P5/26
Filed: 1988-08-04
Granted: 1993-05-18
Abstract: Abstract of the Disclosure A laser Doppler anemometer with at least two laser  beams  pass  to  a  region  of  a  fluid  flow containing  particles.    The  scattered  light  is frequency shifted by the Doppler frequency resulting from  the  flow  speed.    The  construction  is  very compact and permits a high signal-to-noise ratio for the measurement signals.  The laser beams consist of high-frequency pulses,  the  frequency of the pulse sequence  of  which  is  a  multiple  of  the  Doppler frequency.
Patent CA-1330335-C (CA)
Inventor: VAN DIJK NICOLAAS
IPC: B01J29/90
Filed: 1988-09-09
Granted: 1994-06-21
Abstract: A B S T R A C T             PROCESS FOR THE REGENERATION OF     A HYDROCRACKING CATALYST      Process for the regeneration of a hydrocracking catalyst containing a faujasite-type zeolite, one or more metals of Group VIB and one or more metals of Group VIII, and a carbonaceous material, which process comprises burning off at least part of carbonaceous material using an oxidizing gas having an oxygen content of at least 12% by volume at a temperature of 150-300 °C.
Patent CA-1309668-C (CA)
Title: Anti-static non-metallic pipe or fitting
Inventor: BROADHURST HENRY N
IPC: F16L11/12
Filed: 1988-09-26
Granted: 1992-11-03
Abstract: ABSTRACT            AN ANTI-STATIC NON-METALLIC PIPE OR FITTING          A non-metallic pipe or fitting has its surface coated or treated with an electrically conductive composition. network of grooves or corrugations is formed in the surface of the pipe or fitting.  This helps to ensure that even though the pipe or fitting may be subjected to a high degree of surface wear a latticework of electrical conductive paths remain, protected against wear by the ridges of the grooves or corrugations.
Patent CA-1302739-C (CA)
Title: Copper-tungsten metal mixture and process
Inventor: OENNING JAMES B
IPC: B22F3/00
Filed: 1988-09-27
Granted: 1992-06-09
Abstract: COPPER-TUNGSTEN METAL MIXTURE AND PROCESS     ABSTRACT     A copper-tungsten mixture net-shaped product produced using powder metallurgical techniques with injection molding and liquid phase sintering.  The product has a very low leak rate in helium gas, a high thermal conductivity and a rate of thermal expansion which is substantially the same as some glass and ceramic materials.
Patent CA-1289622-C (CA)
Inventor: SIWIAK KAZIMIERZ
IPC: H04J13/18
Filed: 1988-11-17
Granted: 1991-09-24
Abstract: ABSTRACT OF THE DISCLOSURE An acknowledge back (ack-back) paging system is provided which includes a central station which transmits a group of message signals to an group of ack-back pagers which are addressed as a group. The users of the group of addressed ack-back pagers indicate a response to their respective papers thus providing ack-back data. The payers in the group of addressed ack-back pagers then simultaneously transmit back to the central station their ack-back signals using different respective pseudorandom code , a different pseudorandom code being dynamically allocated to each of the pagers in the group.
Patent CA-1315880-C (CA)
Title: Method for reproducing signal from magneto-optical recording medium
Inventor: ARATANI KATSUHISA
IPC: G11B11/10
Filed: 1988-11-25
Granted: 1993-04-06
Abstract: ABSTRACT OF THE DISCLOSURE    A method of reproducing a signal from a magneto-optical recording medium is disclosed in which the medium is formed of a first magnetic film, a second magnetic film and a third magnetic film magnetically coupled to one another at room temperature TRT, wherein the Curie points Tc1, Tc2 and Tc3 of the first, second and third magnetic films are in the relationship of TC2 > TRT, Tc2 < Tc1, and Tc2 < Tc3, and the coercive force Tc1 of the first magnetic film is sufficiently small in the vicinity of the Curie point Tc2 of the second magnetic film, while the coercive force Hc3 of the third magnetic film is sufficiently greater than a required magnetic field intensity within a temperature range between the room temperature TRT and a predetermined temperature TPB higher than the Curie point Tc2 of the second magnetic film.    In reproducing a signal from the magneto-optical recording medium, the medium is heated to the predetermined temperature TPB to interrupt the magnetic coupling between the first and third magnetic film under an application of magnetic field to cause change of domain size in said first magnetic film, thus providing higher resolution of signal and improved S/N to enable high density recording.
Patent CA-1319992-C (CA)
Title: Method of detecting defects in pneumatic tire in non-destructive manner
Inventor: TSUJI NAOTAKA
IPC: G01M17/02
Filed: 1988-12-13
Granted: 1993-07-06
Abstract: 62-338,897 METHOD OF DETECTING DEFECTS IN PNEUMATIC TIRE IN NON-DESTRUCTIVE MANNER                Abstract of the Disclosure Defects such as separations formed within a pneumatic tire are detected in the non-destructive manner by rotating the inflated tire with respect to a pair of displacement sensors which are urged against an outer surface of the tire at a substantially zero pressure and a higher pressure, respectively, measuring displacement values of the sensors over one revolution of the tire, and deriving differences between displace-ment values at corresponding measuring points on the tire surface.  The defects can be detected precisely without being affected the deformation and radial runout of the tire itself.
Patent CA-1321208-C (CA)
Title: Method for preparation of alkyl glycolates
Inventor: BRILL ROBERT V
IPC: C07C69/675
Filed: 1989-01-24
Granted: 1993-08-10
Abstract: 43-21(6601)A      METHOD FOR PREPARATION OF ALKYL GLYCOLATES         Abstract of the Disclosure A method of carbonylation of formaldehyde is disclosed. In the method, an aqueous formaldehyde concentrate comprising between about 60% by weight and about 85% by weight formaldehyde, carbon monoxide and sulfuric acid are brought together in the absence of an effective amount of added Group IB cocatalyst in a reaction zone under a carbon monoxide partial pressure in the reaction zone of not greater than about 1.72 X 107 N/M2.  A carbonyla-tion reaction is thereby effected in which a carbonylation product is produced comprising at least about 2% by weight sulfuric acid and a mixture of compounds of the formula:          HO(CH2COO)nH wherein n is a positive integer of at least 1.  Also disclosed is a method for preparation of an alkyl glycolate by esterification of the carbonylation reaction mixture.
Patent CA-1338873-C (CA)
Inventor: STACK DENNIS P
IPC: D04H1/64
Filed: 1989-01-27
Granted: 1997-01-21
Abstract: Non-formaldehyde emitting binders for nonwoven cellulosic materials comprise a solution copolymer of an olefinically unsaturated organic compound having at least one carboxylate group, which is reacted with a primary or secondary amide of an olefinically unsaturated carboxylic acid.   The product of said reaction is admixed with a non-formaldehyde-containing latex carrier which has been formulated  with   a   non-formaldehyde-forming   reactive monomer to produce binder compositions which reach sub-stantially fully cured wet strength in 8 seconds or less.
Patent CA-1337892-C (CA)
Title: Method for installing a replacement pipe in an existing conduit
Inventor: STEKETEE CAMPBELL H JR
IPC: B29C48/90
Filed: 1989-04-12
Granted: 1996-01-09
Abstract: A substantially rigid thermoplastic pipe, manufactured in a flattened and folded form so as to have a memory in this condition is stored in such form, heated to make it pliable for installation and positioned in an existing pipe.  The new pipe is rounded by placing heated fluid in the passages along the folds of the pipe while its leading end is restricted.  The leading end may be restricted by an end clamp which enables a hot fluid to pass completely through the pipe and thus heat its full length, or by an inflatable plug.  Alternatively, an inflatable plug may be propelled to the leading end of the new pipe after its insertion and then fully inflated to block such end and thereby enable full rounding and expansion of the remainder of the new pipe.
Patent CA-1317252-C (CA)
Title: Screening arrangement
Inventor: FREISSLE MANFRED F A
IPC: B07B/
Filed: 1989-04-26
Granted: 1993-05-04
Abstract: ABSTRACT     The invention provides for a screening element  which is predominantly of a synthetic plastics material and which has a screening surface formed by a plurality of ribs extending within a surround across the element, the ribs each being of a zig-zag configuration and the ribs being spaced from each other to define between them screening apertures, the ribs being resiliently deformable.
Patent CA-1326880-C (CA)
Inventor: TAKANASHI ITSUO
IPC: G01R29/14
Filed: 1989-05-09
Granted: 1994-02-08
Abstract: ABSTRACT OF THE DISCLOSURE           A voltage is electrostatically induced at a sensing device in correspondence with a surface potential of a measured object.  In the case where the sensing device uses a field effect transistor in transferring detected information, there are some factors decreasing the accuracy of detection.  Various new arrangements prevent such decreases in the accuracy of detection.  In the case of the surface potential of the measured object corresponds to an optical image, new arrangements ensure accurate detection of the optical image.  In some cases, color component signals are obtained on the basis of a detection signal.
Patent CA-1326651-C (CA)
Inventor: ISHII SUSUMU
IPC: A44B19/36
Filed: 1989-05-23
Granted: 1994-02-01
Abstract: ABSTRACT OF THE DISCLOSURE     A key holder includes a holding strap composed of a row of coupling elements attached to a flexible core cord, each of the coupling element having a coupling head which is symmetric in shape about a longitudinal axis of said coupling element, an end stop mounted across opposite ends of the holding strap for connecting them while keeping the holding strap bent into a closed loop with the respective coupling heads of the coupling elements directed inwardly of the looped holding strap, and a slider slidably mounted on and movable along opposed ones of the coupling elements for taking them into and out of interdigitating engagement.          With this construction, the loop of the holding strap can be adjusted by moving the slider to such an extent as to meet the user's desire or to conform to the number of keys to be held on the key holder.
Patent CA-1329992-C (CA)
Title: Hypersonic scramjet engine fuel injector
Inventor: LEE CHING-PANG
IPC: F02K7/14
Filed: 1989-06-01
Granted: 1994-06-07
Abstract: HYPERSONIC SCRAMJET ENGINE FUEL INJECTOR             Abstract of the Disclosure A fuel injector for a hypersonic scramjet engine is described. The fuel injector has a horizontal top wall with a fuel injection orifice, an inclined bottom wall, a vertical end wall with a plurality of spaced apart convergent-divergent fuel outlet nozzles and vertical side walls, whereby the injector housing defines a substantially right angled cross-section. A plurality of fuel injectors are connected to the top portion of the combustor of an scramjet engine and are particularly designed to provide sufficient cooling protection against the hypersonic-speed impingement of the compressed inlet air.
Patent CA-1312090-C (CA)
Title: Hydroxyalkylcysteine derivative and expectorant containing the same
Inventor: ITOH YOSHIKUNI
IPC: C07C323/58
Filed: 1989-06-08
Granted: 1992-12-29
Abstract: ABSTRACT OF THE DISCLOSURE      Novel hydroxyalkylcysteine derivatives of the following formula (I) and an expectorant comprising the same are disclosed.                        (I) wherein n represents an integer of 5 to 24.  The expectorant is stable,  has little side effects and toxicity, and exhibits an excellent expectorant effect.
Patent CA-1323708-C (CA)
Inventor: TEXIER MICHEL
IPC: G06F3/048
Filed: 1989-06-21
Granted: 1993-10-26
Abstract: PROCEDE POUR LA GENERATION DE FENETRES DE DIALOGUE VISUALISABLES SUR L'ECRAN D'UN SYSTEME INFORMATIQUE ET DISPOSITIF POUR METTRE EN OEUVRE CE PROCEDE. Procédé pour la génération de fenêtres de dialogue visualisables sur l'écran d'un système informatique travaillant en mode graphique multi-fenêtres, le procédé étant caractérisé en ce qu'il comporte les opérations suivantes : 1. On organise le formulaire en une ou plusieurs pages matérialisables chacune par une fenêtre d'écran, 2. On définit dans une page, au moins une zone active, page ou partie de page (P1 à P7), susceptible de réagir à un évènement extérieur, 3. On associe à ladite zone active un ensemble de fonctions "éditeur", comportant au moins une fonction de réaction de la zone active à une activation par un évènement extérieur. L'invention est applicable à la génération de masques de saisie et/ou d'affichage de données. L'invention concerne également un dispositif pour mettre en oeuvre le procédé défini ci-dessus.
Patent CA-1334739-C (CA)
Title: Gear reduction and braking means in a motor driven elevating system
Inventor: HEIKKINEN URHO
IPC: B66B11/04
Filed: 1989-07-06
Granted: 1995-03-14
Abstract: An elevator machine has a drive motor, a drive shaft driven by the motor, a traction sheave transmitting the motion to an elevator car by means of ropes and a gear assembly to reduce the rotational speed of the motor for the traction sheave.  The gear assembly is located inside the traction sheave, the drive shaft passes through the traction sheave, the drive motor is coupled to one end of the drive shaft and the brake is mounted on the other end of the opposite side of the traction sheave.
Patent CA-1336819-C (CA)
Inventor: MOTOLA SOLOMON
IPC: A61K9/00
Filed: 1989-07-12
Granted: 1995-08-29
Abstract: A liquid water base ibuprofen composition for oral administration is described, the ibuprofen being maintained in suspension by a combination of primary suspending agents and being taste masked by primary taste masking agents, the composition also containing a buffer acid preferably in an amount sufficient to adjust the pH of the composition to between 1.5 and up to about 4.1 and to provide a buffer capacity within the range of 0.03 to 0.05 between the initial pH and a pH which is 1.0 pH unit higher than the initial pH.
Patent CA-1324134-C (CA)
Title: Process for preparing (rs)-2-(2,3-dihydro-5-hydroxy-4,6, 7-trimethylbenzofuranyl) acetic acids and 2-(2,3-dihydro-5-acyloxy-4,6,7-trimethylbenzofuranyl) acetic acids and esters thereof, useful as mucoregulator and antihyschaemic drugs
Inventor: BRUFANI MARIO
IPC: A61P11/10
Filed: 1989-07-31
Granted: 1993-11-09
Abstract: ABSTRACT OF THE DISCLOSURE:            The invention relates to a process for preparing (RS)-2-(2,3-dihydro-5-hydroxy-4,6,7-trimethylbenzofuranyl)  acetic acids,2-(2,3-dihydro-5-acyloxy-4,6,7-trimethylbenzofuranyl) acetic acids and esters thereof.  The invention also relates to the so prepared compounds which useful as mucoregulators and antihyschaemic agents.