baber/WOPTO huggingface dataset:
Patent CA-2142852-A1 (CA)
Title: Epoxidation catalyst
Inventor: SIELCKEN OTTO E
IPC: C07D301/19
Filed: 1993-08-16
Abstract: The invention relates to a catalyst for the epoxidation of alkenes using alkylhydroperoxide, the catalyst comprising an ion of one or more of the metals molybdenum, wolfram, titanium or vanadium on an inorganic carrier, characterised in that the metal ion is bound to the carrier via a polydentate organic ligand. The invention also relates to a process for the preparation of an alkene oxide by an alkene having 3 or more carbon atoms with an alkylhydroperoxide, using the catalyst described above.
Patent CA-2143242-A1 (CA)
Title: Gas discharge lamp ballast circuit with reduced parts-count starting circuit
Inventor: ALLISON JOSEPH M
IPC: H05B41/38
Filed: 1995-02-23
Abstract: Disclosed is an electronic ballast circuit for a high pressure gas discharge lamp with a reduced parts-count starting circuit. The circuit comprises an arrangement for supplying d.c. voltage from a d.c. source, and a main inductor for receiving energy from the d.c. source and supplying the energy to the lamp. The main inductor has a plurality of windings. A first winding of the inductor is coupled to receive energy from the d.c. source. Further included is a current-switching arrangement conductive during periodic first part cycles for transferring energy from the d.c. source to the main inductor, and non-conductive during periodic second part cycles. A first part cycle is followed by a second part cycle in successive periods of switching operation of the current-switching arrangement. The first winding of the main inductor has impressed across it substantially the d.c. source voltage during the first part cycles, and reflects substantially the lamp voltage during the second part cycles. The circuit further includes a starting circuit for providing a pulse in excess of 15,000 volts across the lamp to facilitate starting the lamp. The starting circuit comprises a spark gap device, a pulse transformer, and a voltage-generating circuit. The voltage-generating circuit comprises a starting capacitor for storing energy and impressing across a spark gap an increasing voltage, which reaches the breakdown voltage of the spark gap during a lamp start-up period, and also a circuit for charging the starting capacitor with energy from the main inductor during the second part cycles.
Patent CA-2143304-A1 (CA)
Title: Process for the preparation of 2-n-butyl-2-ethyl-1,3-propane diol
Inventor: KULMALA KARI
IPC: C07C31/20
Filed: 1994-06-20
Abstract: The invention relates to a novel process for the preparation of 2-n-butyl-2-ethyl-1,3-propane diol from 2-ethyl hexanal and formaldehyde by using a basic alkali metal hydroxide or earth alkali metal hydroxide catalyst. In the process according to the invention, cationic or neutral phase transfer catalysts are additionally used for promoting the reaction. The correct choice of the sources of the initial material ccomponents is also essential. 2-n-butyl-2-ethyl-1,3-propane diol is used, for example, in the paint industry in the preparation of pulverous paints.
Patent CA-2145326-A1 (CA)
Title: Process and apparatus for processing industrial waste water by electrolysis
Inventor: WITT WILLI
IPC: B03D1/14
Filed: 1995-03-23
Abstract: Electrolysis of water is effected while the water flow is pulsed utilizing pulse direct current in an electrolyzer having a medium flow between pairs of electrodes and a meandering flow from electrode pair to electrode pair, treating waste water and producing a flocculate which is removed in a stilling or settling tank cascade. The efficiency of noxious and toxic substance eliminationis increased and electrode life improved, while overall energy consumption is reduced.
Patent CA-2149339-A1 (CA)
Title: A portable light emitting apparatus with a semiconductor emitter array
Inventor: KENNEDY JOHN
IPC: A61B18/18
Filed: 1994-09-12
Abstract: A hand-hold portable light,emitting device (10) suitable for medical and industrial photocuring and phototherapy applications. The hand-held portable light emitting-device (10) comprises: (a) a portable housing (12) having a front end and rear end; (b) light emitting semiconducting means (14) having a matrix of a plurality of light emitting diode means (22) mounted at said front end, said light emitting diode means (22) being operative to emit light energy suitable for initiating a photo-reaction; (c) power means (20) coupled to said semiconducting means (14) and operative to provide the electrical power for energizing said plurality of light emitting diode means (22) to emit in combination said light energy; (d) control means (48) connected to said semiconducting,means (14) and said power means (20), and operative to vary the level of said light energy; (e) mounting means provided at said front-end of said housing, and (f) an optical assembly (18) mounted to said mounting means, said optical assembly being operative to direct said light energy generated from said light emitting diode means to a photo-reaction location disposed to said optical assembly.
Patent CA-2151519-A1 (CA)
Title: Stormwater quality and quantity catchbasin system
Inventor: GEORGIS FARIS S
IPC: E03F5/14
Filed: 1995-06-12
Abstract: This invention comprises of a two-legged siphon, a number of weepholes covered with filter fabric and perforated covers, and a water collection and distribution unit, all of which are installed inside a stormwater system catchbasin to achieve the following:            -    to reduce stormwater pollution -    to improve erosion in watercoarses, lakes and other recieving bodies of water, by lowering floodlines -    to increase the capacity of the stormwater recieving system by reducing the volume of discharge and by attenuating peak flows -    to increase the recharge of groundwater resources
Patent CA-2153121-A1 (CA)
Title: Apparatus and method for identifying multiple transponders
Inventor: ORTHMANN KURT
IPC: H04B1/59
Filed: 1995-06-30
Abstract: Apparatus and method for identifying a plurality of transponders (10-16) located within an inquiry field (18) of  an  interrogation  unit  (20)  are  provided.    Each transponder (10-16)  is assigned an unique identification code,   and  the  interrogation  unit   (20)   dynamically constructs  and modifies  a  bit  string  used to  solicit responses   from   selected   transponder(s)   until   each transponder  (10-16)   in  the  inquiry  field   (18)   is identified.    The  bit  string  is  transmitted  to  the transponders, which compares it with the least significant bits of their respective identification codes. A mismatch between the identification code and the bit string results in suppressing the response from the transponder.
Patent CA-2153143-A1 (CA)
Inventor: DISANTO FRANK J
IPC: G02F1/1685
Filed: 1994-01-06
Abstract: An EPID electrode configuration includes a pluality of parallel, tined, interdigitized anode (14) and cathode (12) lines deposited upon a faceplate (10). A plurality of guard elements (16) are provided between adjacent pairs of anode (14) and cathode (12) lines. In a first embodiment, grid lines (34) oriented perpendicularly to tbe anode (14) and cathode (12) lines are applied to a rearplate (30) of the EPID. Alternatively, the grid lines (234B) may be deposited on an intermediate coating of silicon dioxide (242) and phostoresist (244).
Patent CA-2155487-A1 (CA)
Title: Asbestos-free gaskets and the like containing blends of organic fibrous and particulate components
Inventor: KAMINSKI STANLEY SIGMUND
IPC: C08J5/14
Filed: 1995-08-04
Abstract: Improved asbestos-free fiber reinforced material for use in the manufacture of gaskets, and the like, comprises (a) an elastomeric binder material and (b) a blend of fibrillated, organic, synthetic polymer, organic synthetic polymer staple and organic synthetic, soluble polymer particles so as to enhance the strength of the gaskets, shock mountings, timing belts, sealants, and the like, made from such materials.
Patent CA-2155693-A1 (CA)
Title: Performance Monitoring and Fault Location in Optical Transmission Systems
Inventor: FISHMAN DANIEL A
IPC: H04B10/17
Filed: 1995-08-09
Abstract: Monitoring of optical amplifiers is accomplished, in accordance with the invention, by an apparatus and method for detecting a power level of a tone modulated upon a signal input to the amplifier, detecting an output power level of the amplifier, and comparing the power level of the tone to the output power level of the amplifier to determine an indication of the performance of the amplifier. In illustrative embodiments of the invention, each of the individual channels within a multiplexed optical signal are modulated with a specific low-frequency tone. The modulating is performed at the transmission site of the optical signal, and the specific tone frequencies are chosen to be lower than the low-frequency cut-off of any other information encoded upon the optical signal. The channel power of each channel is determined after each stage of optical amplification in the network by measuring the power of its respective unique low-frequency tone using a low-cost monitor. The total optical output power of the optical amplifier is also measured by the monitor. The ratio between the tone power and the optical amplifier output power after the first stage of optical amplification in the network is compared to the tone power/output power ratio at each subsequent optical amplification stage. Changes between the first and subsequent tone power/output power ratios reflect changes in network performance. The changes in tone power/output power ratio are strongly correlated to actual changes in optical signal-to-noise ratio. Advantageously, such a monitor may be built-in to each optical amplifier in the network, and no complex calibration of any components in the network is needed. Since each optical amplifier has a dedicated monitor which determines the status of each channel, faults in the network may be readily and quickly located to a specific optical amplifier and a specific channel.
Patent CA-2155909-A1 (CA)
Title: Flyweight with a lateral knob
Inventor: LANDRY JEAN-BERNARD
IPC: F16H55/56
Filed: 1995-08-11
Abstract: The driving pulley is used in a variable-speed belt drive, which comprises, in particular, two radially converging ramps facing each other and coaxial to a shaft, one ramp being rigidly attached to a movable flange and the other ramp being rigidly attached to the shaft in spaced relationship with the movable flange. A plurality of sliding flyweights are symmetrically disposed around the shaft and radially movable between the ramps. The improvement in the driving pulley is that each ramp comprises a contact surface on which the flyweights are in contact wherein at least one contact surface is curved. Each flyweight also comprises a lateral knob engaged with the curved contact surface for ensuring that the contact point of the sliding flyweights with a curved contact surface does not substantially change as the flyweights slide.
Patent CA-2159270-A1 (CA)
Inventor: KOLLAR LUBOR J
IPC: G06F16/245
Filed: 1995-09-27
Abstract: A  method  for  localizing  execution  of  subqueries  and determining collocation of execution of subqueries in a shared-nothing database.  The concept of compatible partitioning is used to localize database operations in order to eliminate excess processes and communication, and thereby improve response time and throughput for the database management system.  The method reduces the number of process by reducing the number of nodes involved  in  processing  a  query  and  by  combining  multiple processes.
Patent CA-2159968-A1 (CA)
Title: Protective member for a vehicle
Inventor: BARTLEY ROBERT WILLIAM
IPC: B60R19/54
Filed: 1995-10-05
Abstract: A device for a vehicle (2) comprising a protective member (1) spanning a section of the vehicle (1), and mounting means to mount the protective member (1) to the vehicle (2). The protective device may be contructed of a plurality of interconnected elements to form a frame (15, 25, 38).
Patent CA-2162103-A1 (CA)
Title: Method for the thermal adhesion of parts made of acrylic plastic and parts made of engineering plastics
Inventor: THEIL ALEXANDER
IPC: B32B27/30
Filed: 1995-11-03
Abstract: The invention concerns a method for the production of a flat composite (5) from plastic parts by means of a thermal adhesion of two plastic parts (1,1'), heated on one side of their surfaces (1a,1a'), consisting of plastics A and B, wherein the surfaces (1a,1a') are heated on the adhesive side to surface temperatures of 10 to 100 K above the Vicat softening points VET (according to DIN ISO 306) of the pertinent plastics A and B, provided that the plastic parts (1,1') retain their original shape during the preheating phase, and are pressed between a pair of rolls (2,3), at an advance rate between 5 and 200 mm/sec and with a pressing force between 10 and 500 N acting on the roll (3); preferably, the plastics (1,1') exhibit engraving or embossing (6,6'), with which composite (5) can be produced with a three-dimensional inclusion (7) of a defined shape; furthermore, a flat or elongated object (8) is embedded between the plastic parts (1,1') to be adhered during the adhesion of the composite (5).
Patent CA-2163469-A1 (CA)
Inventor: THIESSEN DONALD
IPC: E04D13/08
Filed: 1995-11-22
Abstract: The  invention is concerned with an  automatic  down-pipe  extension  assembly for use on the bottom end  of  a vertically  positioned down-pipe.  Water collecting in  a bag located within the assembly actuates the pivoting of a discharge  pipe  from a vertically stored  position  to  a substantially   horizontal   in-use   position,    thereby permitting  discharge  of  water remote  from  a  building foundation.
Patent CA-2164939-A1 (CA)
Title: Rapid detection of analytes with receptors immobilized on soluble submicron particles
Inventor: MOLL FRED III
IPC: G01N33/543
Filed: 1995-04-11
Abstract: Methods are provided for conducting specific binding assays to determine the concentration or presence of at least one analyte in a sample. Dendrimer-reagent preparations with particular analyte specificities are mixed in solution with a sample to form dendrimer-reagent-sample complexes. The complexes are then immobilized on a solid phase. Immobilization is facilitated by coupling specific binding assay reagents such as polypeptide receptors or analytes with water soluble polymers. Such water soluble polymers, for example star polymers such as dendrimers, provide production advantages of lot-to-lot uniformity and homogeneity, and can enhance sensitivity due to low non-specific binding to the solid phase.
Patent CA-2165408-A1 (CA)
Title: Brazing sheet having increased silicon content in aluminium core sheet
Inventor: MILLER SINCLAIR WILLIAM
IPC: B23K35/28
Filed: 1995-12-15
Abstract: Brazing sheet having a core sheet made of an aluminium alloy core material and on at least one side thereof a brazing layer of an aluminium alloy containing silicon as main alloying element, wherein the aluminium alloy of the core sheet has the composition (in weight %) Mn 0.7 - 1.5 Cu 0.2 - 2.0 Mg 0.1 - 0.6 Si > 0.15 Fe up to 0.8 Ti optional, up to 0.15 Cr optional, up to 0.35 Zr and/or V optional, up to 0.25 in total balance Al and unavoidable impurities, with the proviso that (Cu + Mg) > 0.7.        This brazing sheet achieves improved post-brazed strength properties by ageing, e.g. 0.2 % yield strength of at least 70 MPa, and has at the same time a good post-brazed, corrosion resistance as determined in a SWAAT (ASTM G85) corrosion test.
Patent CA-2166519-A1 (CA)
Title: Compact furniture hinge
Inventor: FERRARI FRANCO
IPC: E05D11/10
Filed: 1996-01-03
Abstract: A furniture hinge (10, 110) has a wing (11, 111) and a cup (12, 112) interconnected with each other by a lower link rod (14, 114) and an upper link rod (15, 115). A torsion spring (25, 125) is wound round a pin (21, 121) inside the wing and parallel to the pivots of the link rods so as to have a thrust arm (22, 122) which arts upon a protrusion (20, 120) of the lower link rod facing towards the pin of the spring to push the hinge towards the closed position during a last section of the movement. The pivoting of the lower link rod (14, 114) to the wing is substantially between the pin (21, 121) of the spring and the pivoting of the upper link rad (15, 115) to the wing. The torsion spring advantageously has a reaction arm (223) which rests on the lower link rod (114).
Patent CA-2170428-A1 (CA)
Title: Ball Valve with a Strainer and Integrated Means for Flushing the Strainer
Inventor: PETTINAROLI GIUSEPPE
IPC: F16K5/06
Filed: 1996-02-27
Abstract: A ball valve having a valve body defining a ball valve chamber and having a longitudinal axis defined by inlet and outlet passages.  A ball valve element is rotatably disposed in said valve chamber.  The ball valve element has a diametrically disposed fluid passage and is operatively connected to a control lever for rotating the ball valve element between a closed position and an open position.  A basket strainer is removably mounted in the ball element passage in the ball valve element.  The ball valve is provided with an internal pilot fluid flush passage that connects an inlet port to the ball valve chamber, and a pilot fluid flush discharge port and discharge valve that communicate with the ball valve chamber.  A flow control plug valve is movably mounted in the internal pilot fluid flush passage for selective allowing or preventing fluid flow therethrough.  When the ball valve element is rotated to a closed position, the flow control plug valve may be moved to an open position to allow upstream fluid to flow through the inlet port and internal pilot fluid flush passage and into the ball valve element chamber and through the basket strainer and out the pilot fluid flush discharge port, to reverse flush out debris captured by the basket strainer.
Patent CA-2170513-A1 (CA)
Inventor: LUBIN MICHAEL L
IPC: H04W76/04
Filed: 1994-09-08
Abstract: Un combiné radiotéléphonique portable présente l'aptitude à fonctionner comme un terminal de transfert de données ainsi que comme unposte téléphonique cellulaire analogique d'abonné. Deux modes de fonctionnement sont disponibles dans le combiné, un mode de communication cellulaire analogique et un mode de transmission numérique et cellulaire de données par paquets (CDPD). Une fonction de recherche de personnes destinée à la communication cellulaire analogique d'arrivée est effectuée sur une voie CDPD. Le combiné fait la distinction entre des signaux de recherche de personnes identifiant la communication en mode CDPD et des signaux de recherche identifiant une communication cellulaire analogique. Le combiné donne automatiquement la priorité aux communications cellulaires analogiques, telles que celles effectuées selon une configuration de service téléphonique mobile évolué (AMPS), par rapport aux communications CDPD.
Patent CA-2170702-A1 (CA)
Title: Cf sheet for carbonless copy paper and weather resistant tags incorporating same
Inventor: WILLIAMS RODNEY E
IPC: B41M5/124
Filed: 1996-02-29
Abstract: A coated front sheet useful in carbonless copy forms. The sheet has a moisture resistant coating of latex binder, color developer, and pigment in association with a substrate. The coating is formulated to permit formation of a legible image in use in the carbonless copy form, and to minimize the adverse effects of humid weather conditions. The substrate is resistant to degradation by moisture, and may be a moisture resistant polymer or paper impregnated with the moisture resistant coating.
Patent CA-2173877-A1 (CA)
Inventor: BECKER LUTZ
IPC: F27D99/00
Filed: 1994-10-10
Abstract: A bottom electrode for a metallurgical vessel driven with direct current consists of two parts made of different materials that may be interconnected. A coolant is applied on the part arranged outside of the bottom of the vessel and turned towards the outside of the vessel whereas the part turned towards the inside of the vessel is designed as a wearing part and is in contact with the molten metal inside the vessel. The wearing part consists of a component made mainly of a metallic material comparable to the molten mass, and of a component made of a high temperature resistant material.
Patent CA-2175158-A1 (CA)
Title: Pipe of polyethylene having improved mechanical properties
Inventor: BERTHOLD JOACHIM
IPC: B29C48/32
Filed: 1996-04-26
Abstract: The invention relates to a high strength pipe of ethylene polymer having a bimodal molecular weight distribution. Such pipe has a stress cracking resistance of >= 1400 h, a fracture toughness of >= 7 mJ/mm2 and a modulus of creep in flexure, measured according to DIN 54852-Z4, of >= 1100 N/mm2. The pipe according to the invention is produced from an ethylene polymer in which the ratio of weight of the low molecular weight fraction to the weight of the higher molecular weight fraction is in the range from 0.5 to 2.0 and which has a melt flow index MFI5/190°c of <= 0.35 g/10 min. It is particularly suitable for the trans-portation of gases and water.
Patent CA-2177182-A1 (CA)
Inventor: LEO ANO
IPC: F01M11/03
Filed: 1996-05-23
Abstract: The invention is a spin-on type filter with a reclaimed permanent filter casing and permanent filtering mediums that are washable and reusable. There are three distinct progressive filtering systems that function simultaneously, but separately within one filter housing; one is the full flow filtering at 10 micron capability while the other is in its by-pass fine filtering mode at 1 to 3 micron filtering capability. In addition, a safety full flow filter can be activated to filter the return oil while the main full flow medium is fouled. Each system can be implemented with multi mediums. The main body of the filter, which comprises the filter head and the mediums, can be separated easily for servicing from its casing which is designed to attach to the engine. Fine stainless steel cloths are being utilized as filtering mediums which can last the life of an engine. Further more, magnetic pieces are utilized to trap suspending metal filings in oil flow. The design of the main filter body as such is that any used conventional filter canister can be simply adopted to it or a new filter canister casing can be utilized whichever is the advantage at the time of installation and of in production.
Patent CA-2179460-A1 (CA)
Inventor: VIALL ARTHUR J
IPC: C10L9/00
Filed: 1996-06-19
Abstract: A process for reducing the spontaneous combustion tendencies of thermally beneficiated low rank coals employing heat, air or an oxygen containing gas followed by an optional moisture addition. Specific reaction conditions are supplied along with knowledge of equipment types that may be employed on a commercial scale to complete the process.
Patent CA-2179903-A1 (CA)
Title: Disconnectable and reconnectable coupling device
Inventor: JAKOB HORST
IPC: F16G3/00
Filed: 1995-11-17
Abstract: The invention concerns a disconnectible and reconnectible junction device for conveyor band made up of two flat flexible elements (A, a)~ presenting at the front side complementary shapes capable of interleaving in one same plane, connected rearwardly to the ends of a conveyor band, by sticking, vulcanization, riveting, clamping, thermoplastic molding, or formed directly by moulding over the ends of the conveyor band, each one of the flexible elements comprising at the front side oblong strips (L1, L2, L3, 1 1, 1 2, 1 3) in the longitudinal direction, separated by notches (E1, E2, E3, e1, e2, e3) of a shape complementary to those of the strips, the said strips comprising aligned holes (1) capable of receiving at least two and preferably several linking stems which cross through them in an approximately transversal direction, and being made of an elastomer material reinforced by one or several reinforcement layers (1) to which adheres the elastomer material, the number of junction stems and their spacing in the longitudinal direction being chosen in relation, on the one hand with the forces to be transmitted by the conveyor band and on the other hand by the adherence of the elastomer material surfaces to the reinforcement layer on reinforcement layers surfaces.