baber/WOPTO huggingface dataset:
Patent CA-2063003-A1 (CA)
Title: Secondary radar system
Inventor: HOEFGEN GUENTER
IPC: G01S13/93
Filed: 1992-03-13
Abstract: Conventional secondary radar systems use mechanically rotating antennas to radiate a concentrated beam that rotates in a horizontal plane. Data exchange between ground stations and airborne transponders can only take place if the aircraft is struck by the antenna lobe.      The distance from the aircraft to the ground station is determined from the signal transit time.      Directional information is derived from the an-tenna position. The secondary radar system according to the invention uses an omnidirectional antenna, so that data can be exchanged between ground station and air-craft at any time. To determine the position of the aircraft, interrogation signals are transmitted by a single active ground station such that the reply signal from a transponder falls within the common system time frame of the ground station. The times of arrival of the reply signals at different ground stations are then directly proportional to the distances from the aircraft to these ground stations.
Patent CA-2065960-A1 (CA)
Title: Press section of a papermaking machine
Inventor: BRAUN HEINZ
IPC: D21F3/02
Filed: 1992-04-14
Abstract: A press section of a papermachine for dehydrating a paper web contains two separate, series-arranged broad-nip pressing points (1 and 2). Both pressing points (1,2) each have at least one felt band which is passed through the pressing points together with the web. The paper web is passed forward from the first pressing point (1) to a take-off device (15) which is in contact with the upper felt (13) of the second pressing point (2) and from which the web can then reach the second pressing point (2). 
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Patent CA-2066193-A1 (CA)
Title: Method of producing a thin silicon-on-insulator layer
Inventor: GODBEY DAVID J
IPC: G03F1/22
Filed: 1990-09-28
Abstract: 2066193 9105366 PCTABS00004 A process for fabricating thin film silicon wafers using a novel etch stop composed of a silicon-germanium alloy (24) includes properly doping a prime silicon wafer (20) for the desired application, growing a strained Si1-x Gex alloy layer (24) onto seed wafer (20) to serve as an etch stop, growing a silicon layer (26) on the strained alloy layer with a desired thickness to form the active device region, oxidizing the prime wafer (20) and a test wafer (30), bonding the oxide surfaces of the test (30) and prime wafers (20), machining the backside of the prime wafer (20) and selectively etching the same to remove the silicon (20 and 22) removing the strained alloy layer (24) by a non-selective etch, thereby leaving the device region silicon layer (26). In an alternate embodiment, the process includes implanting germanium, tin, or lead ions to form the strained etch stop layer (24).
Patent CA-2066770-A1 (CA)
Title: Process for producing polyolefin
Inventor: YAMAGUCHI YOSHIHISA
IPC: C08F2/34
Filed: 1991-07-26
Abstract: A process for producing polyolefin with a vapor-phase fluidized-bed reactor, wherein the reaction is started after filling the reactor with particles which contain moisture and/or molecular oxygen and can form a fluidized bed in order to prevent the formation of molten resin which is liable to occur at the start of the reaction and to attain a smooth operation of the reactor.
Patent CA-2070212-A1 (CA)
Title: Compositions for iron control in acid treatments for oil wells
Inventor: PERTHUIS HERVE
IPC: C09K8/528
Filed: 1992-06-02
Abstract: ABSTRACT OF  THE DISCLOSURE       The invention relates to iron control in an acid medium for  forestalling  the  formation  of  precipitates  known  as "sludges"  (asphaltic products) in contact with certain crude oils.  Use  is  made  of  compounds  comprising  a  mercaptan function, and, in combination, a selection of catalysts. Application to acid treatments for oil, gas, water, geothermal and analogous wells, as well as to industrial cleaning.
Patent CA-2073667-A1 (CA)
Inventor: MARTIN-COCHER JEAN-PAUL C
IPC: B65B11/04
Filed: 1992-07-10
Abstract: A method for wrapping a palletized load bounded by a vertical lateral face which is closed on itself and two,  upper and lower, end faces, by means of  film made  from  plastic.   An  initial outermost portion of a band of film coming from a reel of film is  attached  to  the  lateral  face  of the  load.  A relative pivoting movement of the axis of the reel of film and of the load is performed about a first axis which is substantially coincident with the vertical axis of the load and which has a vertical general direction and, as a result of this movement, the band of film is progressively laid over this lateral face. Film is laid over the upper end face to be covered; the band of film is cut transversely and the terminal outermost portion of the band is firmly secured to the laid film or to the load,  wherein film coming from the reel of film is laid over the upper end face to be covered and, for this purpose, when the band of film is in the vicinity of the upper end face.  At least one pass is carried out in which the relative pivoting movement about the first axis is stopped. A relative  pivoting  movement  of  the  order  of  one quarter or of three quarters of a turn of the axis of the reel of film and of the load is performed about a second axis which has a horizontal general direction and the reel of film is thus brought from a sub-stantially vertical position which is parallel to and close to the lateral face of the load to a general position close to and parallel to the upper end face to be covered.  The axis of the reel of film then being substantially orthogonal to the second axis; in this situation at least one relative sliding movement of the axis of the reel of film and of the load is performed substantially along the second axis over a travel of the order of the longitudinal dimension of the upper end face of the load measured along the second axis  until it  is covered with the film. A relative  pivoting  movement  of  the  order  of  one quarter or three quarters of a turn of the axis of the reel of film and of the load is then performed about the  second axis  until  the reel of  film is brought into a position substantially parallel to and close to the lateral face of the load.
Patent CA-2075952-A1 (CA)
Inventor: OELFKE CLIFFORD M
IPC: A47J39/00
Filed: 1991-02-11
Abstract: An apparatus for storing, refrigerating and heating food items in serving containers includes a rethermalization cart (12) having a plurality of shelves (44a, 44b). Each of the shelves (44a, 44b) support one of a plurality of food trays (16) thereon. Each tray (16) has a plurality of food compartments (52a, b, c, d, and e) and openings for supporting one of the serving containers (56a, b, c). Each (54a, b, c) serving container (56a, b, c) containing food to be heated includes a cover (58a, b, c). Each shelf of the cart has at least three heating pads (64a, b, c) conforming to the openings of the tray (16) when the tray (16) is inserted in the shelf (44a, 44b). The cart (12) also includes a plurality of individual switches (110, 112, 114) each controlling all of the heater pads (64a, b, c) of each tray shelf (44a, b) as a set. Each switch (110, 112, 114) is provided within a channel (136) recessed from the exterior surface of the cart (12). The cart may also include a hinged work station (120) attached to the exterior surface (38b).
Patent CA-2076873-A1 (CA)
Title: Method and apparatus for producing polymeric films
Inventor: GRADY CLYDE C
IPC: B29C48/10
Filed: 1991-02-27
Abstract: An apparatus and method for the production of polymeric films by a blown film process is disclosed. Polymeric films produced from crystallizable linear polymers are extruded through a die extruder, expanded by the injection of a gas inside the tubular film (14), cooled at the point of extrusion from the die (11), and further cooled at the point of maximal expansion or the frost line (18) to produce a film having substantially enhanced optical characteristics.
Patent CA-2079052-A1 (CA)
Inventor: RICHARDSON ORVILLE H
IPC: B62D53/08
Filed: 1992-09-24
Abstract: An inner member and outer member enclose a trailer kingpin. The inner member has an outer shell with a laterally extending slot for receiving the kingpin. Plates are mounted transversely of the shell adjacent to the slot edgesfor preventing axial movement of the inner member relative to the kingpin. Padlock shackles are fixedly mounted to and extend radially from the inner member. A padlock body has a key cylinder for locking the padlock body onto the shackles. An outer sleeve member has an open end for receiving the inner member and shaft end, and a side opening positioned and sized to receive the padlock body during locking of the padlock body onto the shackles. The padlock body extends through the side opening when the padlock body is locked onto the shackles, whereby the inner member is fixed axially relative to the outer member and the shaft end is captured in the device.
Patent CA-2083723-A1 (CA)
Title: Process for removing sterols from vegetable and animal fat
Inventor: PETER SIEGFRIED
IPC: A23D9/007
Filed: 1992-11-25
Abstract: ABSTRACT   Described is a process for the removal of sterols, in particular cholesterol, from, or, respectively, the enrichment of sterols in vegetable and animal fat, in which the sterol-containing fat is mixed with a mixture consisting of a hydrocarbon, a water miscible solvent and water. The two phases forming are then separated to give a hydrocarbon-enriched phase containing substantially the fat essentially freed from the sterol(s) and an alcohol-enriched phase containing the dissolved sterol(s). The process is preferably carried out continuously in a countercurrent.
Patent CA-2085079-A1 (CA)
Title: Method for increasing wet hiding power
Inventor: FASANO DAVID M
IPC: C09D7/00
Filed: 1992-12-10
Abstract: ABSTRACT OF THE DISCLOSURE   This invention relates to a method for increasing the hiding power of a wet paint film. The method of this invention includes admixing a wet paint and an amount of at least one transient colorant effective to increasing the wet hiding power, and applying the admixture to a substrate. Suitable transient colorants must diminish in color during or after the drying of the paint film containing the transient colorant.
Patent CA-2089488-A1 (CA)
Title: Pathogen-specific ctl therapy
Inventor: LIEBERMAN JUDY
IPC: A61K35/14
Filed: 1991-09-06
Abstract: Disclosed is a method for the treatment of a patient infected with an intracellular pathogen, involving administering to the patient an intracellular pathogen-specific, cytotoxic T  lymphocyte-stimulatory antigen, or a preparation of the patient's lymphocytes enriched for intracellular pathogen-specific cytotoxic T  lymphocytes.
Patent CA-2090061-A1 (CA)
Title: Low impact exercise apparatus
Inventor: JEROME HENRY M
IPC: A63B22/14
Filed: 1993-02-22
Abstract: ABSTRACT        An  exercise  apparatus  for  simulating  stair climbing, stair hopping and downhill skiing is disclosed. The apparatus includes a base with a vertical  support extending upwardly therefrom and a handrail supported by the vertical  support.   Two  foot  pedals  are  pivotally connected to the vertical support.  Each foot pedal has a roller chain connected at one end to the foot pedal.   A spring is connected between the other end of each roller chain and the foot pedal at a position spaced from the point of connection of the roller chain.  The two roller chains are looped over drive chain sprockets which are rotatably mounted by clutch bearings on a shaft in spaced apart relation.   The drive shaft extends through and is rigidly secured to a friction drum.   A chord is looped around  the  drum  between  a  spring bias  and  a  length adjustable  rod  thereby  forming  a  variable  resistance mechanism.   Depressing the foot pedals results  in the clutch bearings engaging the shaft thereby rotating the friction drum.   The force required to depress the foot pedals  is  set,  by  adjusting  the  resistance  mechanism.          Releasing the foot pedal causes the bearing to disengage from the shaft and the bias springs return the pedal to the up position.  Both pedals can be depressed simultaneously to simulate stair hopping, or separately to simulated stair climbing.  Downhill skiing can be simulated by attachment of a platform to the foot pedals having a rotatable table mounted thereon. Hopping and twisting simulates skiing.
Patent CA-2093755-A1 (CA)
Title: Crisp edible material and method of preparing same
Inventor: DAVIES ALAN P
IPC: A23L7/157
Filed: 1993-04-08
Abstract: ABSTRACT      Crisp edible material predominantly comprising 40 to 70% pure gluten protein and starch having an amylopectin to amylose ratio ranging from 8:1 to 25:1.      A method of preparing an expanded crisp food material by extruding a mixture of predominantly 40 to 70% of pure gluten  protein  and  30  to  60%  of  starch  having  an amylopectin to amylose ratio of from 8:1 to 25:1 and up to 30 parts water per 100 parts solids at temperatures between 100 and 150°C and drying the extrudate.
Patent CA-2094269-A1 (CA)
Title: Scalable parallel vector computer system
Inventor: OBERLIN STEVEN M
IPC: G06F9/38
Filed: 1991-10-04
Abstract: The specification discloses a scalable parallel vector computer system including a multiple vector processor network, a common memory, and communication network for communicating between the vector processors and the common memory. The communication network is designed such that information transmitted suffers variable latencies. These latencies are substantially hidden through the use of context switching vector processors containing multiple instruction threads. These vector processors execute the instructions in one thread until an issue block is encountered, then context switch to the next thread, continuing this process until all instructions are executed. This context switching significantly reduces processor idle time. As a result, the system of the present invention may be scaled to virtually any number of processors by simple replication without substantially impacting individual processor performance.
Patent CA-2096679-A1 (CA)
Inventor: WHITE THEODORE B
IPC: C02F3/06
Filed: 1993-05-20
Abstract: The water filtration apparatus is based on the principles of swirl-separation, flow-straightening and biological filtration. The waste stream is introduced into a swirl chamber. Overflow from the swirl chamber is introduced into a biological chamber in the form of a vertically-oriented tube bundle, where it is straightened, its velocity is reduced and it is allowed to contact a biologically active media. The overflow from the tube bundle is then removed. Underflow is removed from the bottom of the swirl chamber.
Patent CA-2100718-A1 (CA)
Title: Process for the preparation of isocyanates by the decomposition of n,n,n'-trisubstituted ureas
Inventor: HACKL KURT A
IPC: C07C209/62
Filed: 1993-07-16
Abstract: Abstract A process  for the preparation of  isocyanates which  is characterized  in that N,N,N'-trisubstituted ureas of the formula            I     in which R1, R2 and R3 are identical or different and are a linear, branched or cyclic (C1-C2,)-alkyl radical which is unsubstituted or substituted by (C1-C6)-alkoxy, option-ally substituted phenyl, halogen or other radicals which are inert under the reaction conditions used, or R2 and R3 together are a heterocyclic non- aromatic ring which can optionally contain further heteroatoms, are decomposed, in  a  diluent  which  is  inert  under  the  reaction conditions, at elevated temperature, to an isocyanate of high volatility of the formula R1NCO and to a secondary amine of low volatility of the formula R2R3NH, whose boiling point is above that of the isocyanate and above the reaction temperature used, after which the isocyanate is drawn off at the top by means of a stream of carrier gas.
Patent CA-2105789-A1 (CA)
Title: Rigid smoke suppressed polyvinyl chloride compounds
Inventor: GREENLEE WILLIAM S
IPC: C08K3/00
Filed: 1993-09-08
Abstract: ABSTRACT            Improved PVC compounds formulated for exhibiting low smoke generation and having high processing stability and impact resistance comprising polyvinyl chloride, an effective amount of at least one smoke suppressant selected from the group consisting of molybdenum, iron, copper, zinc, vanadium, lithium, sodium, potassium, magnesium, calcium, barium, zirconium, manganese, phosphorous, aluminum, chromium, boron, tin and titanium based smoke suppressants, including mixtures, and a lubricant system comprising an ester of a long chain carboxylic acid, a chemically modified paraffin wax, and alkyl ester of an alkyl polyol, and optionally a C8 to C30 substituted or unsubstituted carboxylic acid and a hydrocarbon wax.  The compounds disclosed exhibit an improved combination of properties for a rigid compound exhibiting a heat distortion temperature of at least 60°C, including dynamic thermal stability, impact strength and reduced smoke density in both the flaming and non-flaming mode per NFPA 258.  Preferably, an impact modifier system is included and is selected from the group consisting of an acrylic polymeric impact modifier, an MBS impact modifier, and an ABS impact modifier.  A primary stabilizer is included and a preferred stabilizer system comprises a tin compound and a co-stabilizer selected from epoxidized materials.   The compounds are useful substitutes for engineering thermoplastics in large and/or intricate shaped articles including shower stalls, wall panels, tub enclosures, refrigerator panels, appliance housings, electrical housings, sporting equipment, plumbing ware, automotive components, business machine components and housings.
Patent CA-2106199-A1 (CA)
Title: Diamino-alpha-alkylstilbenes
Inventor: HEFNER ROBERT E JR
IPC: C09K19/38
Filed: 1992-01-31
Abstract: Diamino-alpha-alkylstilbene compounds are prepared which compounds contain a mesogenic moiety. These compounds are useful as curing agents for epoxy resins.
Patent CA-2107908-A1 (CA)
Title: Device for trawl
Inventor: LARSEN ROGER B
IPC: A01K73/02
Filed: 1992-04-14
Abstract: A sorting device for fish trawls to be placed close to the codend (2) including two sorting grids (3 and 3'), which includes a frame (10 and 10') whereto separate bars (11 and 11') are fastened (welded). The main sorting grid (3) has an angle of attack of 25 ·  or more lengthwise to the trawl and is jointed (7) to the second sorting grid (3'), which has a small angle or is parallel lengthwise to the direction of the trawl. At position (8) the second sorting grid (3') is jointed to the stop section (6). The distances between the bars (11 and 11') are adjusted to the wanted separation on fish sizes, thus making it possible to fish below a certain size to escape the trawl during the fishing operation. The sorting grids (3 and 3') should be made of stainless steel (18.8).
Patent CA-2108019-A1 (CA)
Inventor: CHANG GEE-KUNG
IPC: H03F3/345
Filed: 1992-02-05
Abstract: A wideband transim-pedance amplifier utilizing a differential amplifier cir-cuit structure whereby the differential pair is bridged by a signal detector (50 which, as an example, would be a photodetector when the transimpedance amplifier is employed with-in an optical receiver. In or-der to bias the signal detec-tor the differential pair is operated asymmetric with respect to the DC voltage but the circuit maintains a symmetric AC response to the signal detector current input. The circuit is de-signed to operate at the un-ity gain frequency. The sig-nal detector is placed be-tween the source (or emitter) electrodes (32) of the tran-sistors (30) which helps to reduce the impact of gate (or base) capacitance on circuit response speed. These factors combined maximize the bandwidth capa-bilities of circuit. The circuit is responsive to a current input to produce two voltage outputs (15a and 15b) equal in magnitude but opposite in phase.
Patent CA-2110286-A1 (CA)
Title: Device for a detachable securing of formwork boards
Inventor: WALSER HANS-PETER
IPC: E04G5/04
Filed: 1993-03-11
Abstract: ABSTRACT         Proposed for detachably securing formwork panels, formwork boards, insulation and facade panels, breastbars (41), scaffolding brackets (61), etc., is a holding device (1) designed to be embedded and fixed in place in the concrete structure of the building.  This holding device has one or more sockets (17,19) in which matching parts (33,40,51a,63) of the securing, support and/or gripping elements mentioned can be detachably inserted.
Patent CA-2111004-A1 (CA)
Inventor: SINGER ALFRED R E
IPC: C23C4/08
Filed: 1992-06-11
Abstract: Protection of a metal surface is carried out by applying a coating of vitreous enamel to the surface so that the enamel forms a strong bond with the metal and then spraying a coating of an atomized protective metal on the enamel. Preferably a peening operation is carried out on the surface of the sprayed metal simultaneously with or immediately after the spraying of the metal. The method is particularly advantageous in protecting steel marine structures against corrosion and, where the protective metal is cupro-nickel, fouling by marine creatures. The vitreous enamel forms an electrically insulating layer preventing galvanic action between the steel and the cupro-nickel in the presence of sea water.
Patent CA-2113883-A1 (CA)
Inventor: TARASSOFF SERGE
IPC: B61B12/00
Filed: 1994-01-20
Abstract: 11 Une installation de transport en site propre comporte des sections de voie 21,22 de longueur ou de débit différent, chacune équipée d'un câble tracteur 23,24,25 pour déplacer les véhicules 18 sur la section de voie correspondante. Le véhicule est accouplé successivement à des câbles différents et chaque câble l'accélère, le déplace, le freine et l'arrête en station où intervient le changement de câble. La ou les sections de voie 22 les plus longues sont équipées de deux ou de plusieurs câbles tracteurs pour le déplacement simultané de plusieurs véhicules sur cette section de voie. Figure 1
Patent CA-2118291-A1 (CA)
Inventor: PEULVE JACQUES
IPC: B22D19/00
Filed: 1994-10-17
Abstract: Procédé de moulage de pièces en fonte ou en tout autre métal présentant une température de fusion élevée. L'invention concerne un procédé pour mouler des pièces en fonte au moyen d'une enveloppe collaborant en acier. Ce procédé consiste à : - réaliser une enveloppe par assemblage et soudage de tôles en acier, - disposer des granulats autour d'une enveloppe, - couler la fonte en fusion dans ladite enveloppe, et - après refroidissement et solidification de la fonte, retirer les granulats pour obtenir une pièce en fonte collaborant avec les tôles d'acier. Application à la réalisation de conteneurs de déchets radioactifs, d'éléments de structure et de protection biologique. Figures 1 et 2.
Patent CA-2120623-A1 (CA)
Inventor: MARSHALL IAN W
IPC: H04B10/27
Filed: 1993-01-15
Abstract: 2120623 9314604 PCTABS00024 An optical code recognition unit (OCRU) for recognising a predetermined n-bit optical code has an n-way splitter (7) having an input and n parallel outputs (7a). A plurality of cominbers (8a, 8b, 8c) are associated with the splitter outputs (7a), and a respective gate (9a, 9b, 9c) is controlled by the output of each of the combiners. Each of the splitter outputs (7a) is subject to a different delay of from 0 to (n-1) bit periods, and each combiner (8a, 8b, 8c) receives an input from at least one of the splitter outputs (7a). The OCRU is such that all the gates (9a, 9b, 9c) are turned on if a predetermined optical code is applied to the splitter input.