baber/WOPTO huggingface dataset:
Patent CA-2144368-A1 (CA)
Inventor: KIMURA KATSUJI
IPC: H03F3/45
Filed: 1995-03-10
Abstract: In a MOS operational transconductance amplifier including a MOS transistor differential pair, first to fourth current mirrors are provided between a voltage supply and a reference potential. The second and fourth current mirrors are connected together to a common node to which the channels of MOS transistor differential pair are connected. A first MOS transistor is connected between the voltage supply and a first constant current sink, and a second M0S transistor is connected at one end to the first current mirror and at the other end to the first constant current sink and the second current mirror. A third MOS transistor is connected at one end to the third current mirror and at the other end to the second constant current sink and the fourth current mirror, and a fourth MOS transistor is connected between the voltage supply and the second constant current sink. An input voltage is applied across the gates of the MOS differential pair as well as across first and second terminals to which the gates of the first and third MOS transistors and the gates of the second and fourth MOS transistors are connected. The first and second current mirrors and the second MOS transistor form a bootstrapping loop so that the second current mirror produces at the node a current equal to a sum of a constant current produced by the first constant current sink and a current equal to the drain current of one of the first and second MOS transistors. The third and fourth current mirrors and the third MOS transistor form another bootstrapping loop so that the fourth current mirror produces at the node a current equal to a sum of a constant current produced by the second constant current sink and a current equal to the drain current of one of the third and fourth MOS transistors.
Patent CA-2147607-A1 (CA)
Title: Process and apparatus for welding and other heat treatments
Inventor: RANCOURT YVON
IPC: B23K26/06
Filed: 1993-10-22
Abstract: Method and apparatus for welding a plurality of parallel continuous seams (34) on bellows (10) which comprise  the  steps  of  defining  a welding  station (100, 200)  including a laser beam  (501)  or electron beam (700) welding source and a working plane  (505) spaced from the welding source (500, 700) and wherein the working plane (505) is perpendicular and intersects a plane containing the radiation welding source (501, 700). The welding source 501, 700) spans a welding zone defined at the intersection of the working plane (505) and the plane contains the welding source.  The seams (34) are maintained to be welded spaced apart and par-allel and moving at least one of the welding stations and the several workpieces, in unison, relative to one another such that the seams  (34)  to be welded pass through  the  welding  zone  whereby  welded  seams  are formed continuously on the bellows.
Patent CA-2148125-A1 (CA)
Title: Antenna arrangement for a wireless communication device
Inventor: MOLLER PAUL JOHN
IPC: H01Q1/24
Filed: 1994-08-19
Abstract: An antenna arrangement (402) for a wireless communication device (400) comprises a first element (404) and a second element (406). The first element (404) is coupled to circuitry (408) of the wireless communication device (400). The second element (406) is movable between a first position (see Fig. 4) and a second position (see Fig. 5) relative to the first element (404). The second element (406) is capacitively coupled to the first element (404) when the second element (406) is moved to the first position and inductively coupled to the first element (404) when the second element (406) is moved to the second position.  Further, a variable reactance tuner (505), operatively coupled to the antenna element (406), variably tunes the reactance of the antenna element (406) when the antenna element (406) is moved between the first position and the second position.
Patent CA-2150130-A1 (CA)
Title: Improved audio distribution system with independent audio control
Inventor: FARINELLI ROBERT P JR
IPC: H04M11/02
Filed: 1994-10-07
Abstract: An audio distribution system includes a main control unit for distributing audio signals to a plurality of zones using a remote programming unit and a plurality of zone input panels for commanding the types of audio signals to be routed to the various zones. The remote programming unit includes a plurality of input switches, and a command sending circuit responsive to the input switches for sending a command selected by the switches to control the audio in a selected one of the zones. Each of the zone input panels includes a receiver for receiving the commands from the remote programming unit. The receiver is used to couple the received command to the main control unit. The main control unit receives the command from the zone input panel and controls the audio for the selected zone independently from the other zones.
Patent CA-2151096-A1 (CA)
Inventor: PEGLION JEAN-LOUIS
IPC: C07D491/153
Filed: 1995-06-06
Abstract: 1,4-Oxazine tetracyclic derivatives of formula (I) and their acid addition salts in racemic, optically active or enantiomeric forms are new. X, Y = O or CH2; A-B = -(CH2)2- or -HC=CH-, and when Y = O, then A-B may also be -(CH2)3-, when Y = CH2 then A-B may also be -H2C-CO- or -H2C-CHOH-; R = H, 1-10C alkyl, 3-10C alkenyl, 3-10C alkynyl, all of which opt. substd. by 3-8C cycloalkyl, or by phenyl, thienyl, and pyridyl, each of which may be substd. by one or more halogens, OH, or 1-6C alkyl or alkoxy; n = 0 or 1 when X = CH2, or is 1 when X = O.
Patent CA-2159108-A1 (CA)
Title: Spraying nozzle and device for spraying a mixture of water and aiar using said nozzle
Inventor: GIRARDIN PIERRE
IPC: B05B7/02
Filed: 1994-03-23
Abstract: The nozzle comprises an internal chamber (8) supplied with pressurized fluid which communicates with an annular discharge orifice (5). It comprises an internal channel (2) centered on the annular orifice axis and whose diameter corresponds substantially to the diameter of said annular orifice, said channel providing for a double flow around the nozzle and the fluid film coming out of the orifice. The nozzle may be used to spray all types of fluids: water, fuel, in applications involving high flow rates in the order of 5 to 60m<3>/h, yet in very fine droplets. The spraying device fitted with such nozzle comprises preferably two contrarotary fans (22 and 23). The nozzle (1) may also be provided with nucleators (70) arranged on its periphery so as to provide seeding of the water/air mixture for the production of artificial snow. The disclosed spraying device has the advantage of being particularly compact.
Patent CA-2161052-A1 (CA)
Title: Dynamic cleaning method and system
Inventor: TASTAYRE GILLES
IPC: B08B3/14
Filed: 1995-10-20
Abstract: A method is provided for reclaiming used alkaline or acid cleaning solution and for producing fresh such cleaning solution therefrom. The method includes the step of continuously, or intermittently in sequential bursts, removing a stream of such used cleaning solution from a holding zone containing used such solution and cycling used such cleaning solution to a treating zone. The next step involves adding a treating agent (e.g., a chelating agent) to the used cleaning solution, e.g., in the treating zone. Such treated cleaning solution is continuously, or intermittently in sequential bursts, removed from the treating zone. A stream of such treated solution recycled back to the holding zone. A minor stream of such treated solution is also bled-off. Substantially-simultaneously, fresh such cleaning solution, in an amount which is coordinated with the minor amount of used such cleaning solution which has been bled-off, is added to the stream of used such cleaning solution. The total amount to be added is determined by comparison between a selected parameter (e.g., turbidity) of the used such cleaning solution stream and the same parameter of a fresh stream of such cleaning solution.
Patent CA-2162368-A1 (CA)
Title: A device for fluid blocking in a pipeline
Inventor: WIKENGARD-HEED ANNE
IPC: F16L55/124
Filed: 1994-05-09
Abstract: The invention relates to a device for blocking a flow in a pipeline under pressure, comprising a clamp member for encasing a section of the mantle surface of the pipeline and comprising a pipe socket with a valve, switchable between an open and a closed position, and a hole-making tool for producing a hole in the mantle surface during sealing between the tool and the pipe socket. A blocking means is adapted to be inserted through the produced hole and to expand in the pipeline for the purpose of blocking the flow in the pipeline. The blocking means consists of a body with a member being guided in the pipe socket. Two sliding elements, which are carried by the body, are via the support member adjustable from the outside between an open position, in which it is retracted into the body, and an expanded blocking position, in which it seals against the inner circumference of the pipeline.
Patent CA-2164999-A1 (CA)
Title: Stretch Controlled Forming Mechanism and Method for Forming Metal Blanks
Inventor: MUNZEN WERNER
IPC: B21D24/00
Filed: 1995-12-12
Abstract: The present invention relates to a stretch controlled forming mechanism and method for preventing uncontrolled stretching, wrinkling, or splitting of blanks during forming.  Specifically, a stretch controlled forming mechanism is provided that, in accordance with the present invention, forms and locks the blank between opposed die surfaces along selected portions thereof.  Such locking prevents continued flow of material in those areas during the remainder of the formation process. Thus, with the selected areas restricted from further material flow, the portion of the blank not previously formed can be formed between opposed dies, without damage to the selected seams or the remaining material of the blank.
Patent CA-2165767-A1 (CA)
Title: Thermoplastic elastomeric copolymers and hair and skin care compositions containing the same
Inventor: TORGERSON PETER MARTE
IPC: A61K8/00
Filed: 1994-06-30
Abstract: The present invention relates to water or alcohol soluble or dispersible thermoplastic elastomeric copolymers and to cosmetic and pharmaceutical compositions containing these copolymers. This invention especially relates to copolymers useful for hair styling purposes, and to hair styling compositions containing these copolymers. This invention further relates to copolymers useful for providing cosmetic and pharmaceutical compositions for topical application to the skin. These topical skin care compositions are useful for delivering and/or transdermally transporting active ingredients to or through the skin.
Patent CA-2166255-A1 (CA)
Title: Multi-channel optical transceiver
Inventor: TAGLIONE JOHN V
IPC: H04B10/40
Filed: 1995-12-28
Abstract: A data transceiver employing optical radiation comprises transmitter assembly with an optical emitter operable in a first band and an optical emitter in a second band and a receiver assembly with a wide band optical detector which can receive signals transmitted via both the first and second band.  In a second embodiment, the receiver includes both a wide band optical detector and a second optical detector which is operable in only one of the first and second bands, the receiver subtracting signals received at the second optical detector from those received at the wide band detector to separate signals received via the first and second bands.  In a preferred aspect, the optical radiation employed is infrared radiation and the first and second bands are near and medium infrared bands.
Patent CA-2166818-A1 (CA)
Inventor: DELLA-CIOPPA GUY
IPC: C12N9/02
Filed: 1991-06-28
Abstract: The present invention is directed to a method of making an active tyrosinase which comprises the steps of transforming E. coli cells or a unicellular organism with a DNA fragment containing a coding sequence for tyrosinase and a DNA fragment containing a coding sequence for an activator protein and growing the transformed E. coli cells or unicellular organism in a suitable medium.
Patent CA-2167426-A1 (CA)
Title: Y-shaped stent and method for positioning such a stent
Inventor: GLASTRA HENDRIK
IPC: A61F2/06
Filed: 1996-01-17
Abstract: The invention provides a Y-shaped stent, in particular one which is used to reinforce the bifurcation of the aorta into the arteries leading to the lower limbs respectively, to replace a bifurcation prosthesis implanted during conventional surgery. This Y-shaped stent comprises a first stent arranged inside the aorta at the level of the bifurcation and at least two cylindrical stents, each of which is placed with a first section inside an artery branching off and with the remaining section inside the lumen of the first stent.
Patent CA-2170549-A1 (CA)
Title: Apparatus and methods for selectively reducing a huffman coding rate
Inventor: ROSENBERG JONATHAN DAVID
IPC: H04N7/26
Filed: 1996-02-28
Abstract: Apparatus and methods are provided for generating an output signal representing a selectively reduced coding rate for use in compressing a digital signal.  The digital signal includes a plurality of digital sets wherein at least one of the digital sets are non-unique.  A current coding rate and a threshold coding rate compared to determine whether the current coding rate satisfies a predetermined criteria.  In response to the determination, at least one of the digital sets are selectively discarded, a rate difference resulting from selectively discarding at least one of the plurality of digital sets is determined, and the current coding rate is recalculated using the determined rate difference.
Patent CA-2170785-A1 (CA)
Title: Upstream transmission using multiple transmission tags and downstream acknowledgments in conditional access packets
Inventor: BESTLER CAITLIN B
IPC: H04N7/16
Filed: 1996-03-01
Abstract: Upstream transmissions in a two-way communications network are effected from subscriber terminals in upstream packets having one of a plurality of different separately acknowledgeable acknowledgment tags. Downstream acknowledgments of upstream messages are contained in CA packets multiplexed with product packets to form a transport bitstream.  The transport bitstream is applied to a digital conditional access module (DCAM) in the terminal which is controlled by the conditional access data bits of the CA packets.  The DCAM includes a status register for storing the acknowledgment bits of the CA packets, which bits are coupled by a microprocessor for controlling the upstream transmitter.
Patent CA-2170902-A1 (CA)
Title: Stratified solid cast detergent compositions providing improved properties and methods of making same
Inventor: FLEISHER HOWARD
IPC: C11D7/16
Filed: 1994-08-31
Abstract: Disclosed are detergent compositions for warewashing and methods of making them. The detergent compositions are stratified heterogeneous substantially non-uniform solid cast compositions and contain (a) an active alkalinity source (such as alkali metal hydroxide, carbonate and silicate), (b) a granular inorganic water conditioning material (such as sodium tripolyphosphate, an alkali metal pyrophosphate, etc.) and (c) water of hydration, wherein the amounts of components (a) and (b) vary (typically such that the amount of component (b) increases to descale or delime a washing machine and tableware washed at an end of the detergent compositions).      To produce the composition, component (b) is added to a molten suspension of the other components and the resulting suspension is cast and cooled.
Patent CA-2171510-A1 (CA)
Inventor: PLAMPER GERHARD
IPC: A01D34/82
Filed: 1996-03-11
Abstract: An electric switch operating mechanism is disclosed utilizing a rotating bail and a secondary inward moving interlock, wherein a single multiple function spring rotatively biases the moving bail into an inactive position, biasing the interlock into a non-engaged outward position and in addition operates the switch.
Patent CA-2172302-A1 (CA)
Inventor: BURGER WILLIAM R
IPC: B41J2/01
Filed: 1996-03-21
Abstract: An ink jet printer includes a printhead having a plurality of segments each having ink ejecting nozzles, each segment supplied with ink of a different characteristic. Means are provided for moving the printhead in a direction transverse to the advancing movement of a recording medium. Means are further provided for moving the printhead between two or more positions along the recording medium advance direction. Thus, the printhead can print a swath of ink of a first characteristic from one segment and then be moved to print a second swath from a second segment with ink of a second characteristic. In one embodiment, a printhead has two segments, one printing in black, and the other in color. A shift mechanism is enabled to move the printhead between a black print position and a color print position. The invention contemplates alternate color printing swaths at alternate printing positions along the same printing swath, or a combination thereof.
Patent CA-2177311-A1 (CA)
Inventor: AMELINO VICTOR R
IPC: F41G1/16
Filed: 1996-05-24
Abstract: An optical sight (30) is affixed to a rail (26) on a receiver (22) of a weapon (20) by a torque-limiting weapon mount (40). Force is applied to clamp the optical sight (30) to the rail (26) by the relative movement of two inclined ramps (58, 72), one on a rotating knob (44) and the other on a nut (42)whose turning generates the clamping force. The torque, and thence the force, that can be applied in attaching the optical sight (30) is limited by the selection of a spring (102) and by steps (64, 78) at the ends of the two inclined ramps (58, 72) that prevent a clamping force greater than that permitted by the spring(102) force when the knob (44) is turned.
Patent CA-2180584-A1 (CA)
Inventor: IMOTO KATSUYUKI
IPC: C03B33/09
Filed: 1996-07-05
Abstract: A continuous wave-oscillation CO2 laser beam 3 is converged by a lens 4 and focused at a predetermined place O between the surface of the substrate 1 and a tip of a nozzle of a guide 5. Then it is expanded to be a beam 3a having a beam spot diameter of S at the surface of the substrate 1. A flow of assist gas G0, G1, G2 having a certain constant pressure supplied from a gas intake 6 surrounds the laser beam 3. As the laser beam 3a is defocused, the beam spot diameter S is expanded and its energy distribution is moderated. And as the gas is blown off on the substrate 1 at constant pressure, such moderation is facilitated and expanded, generation of strains due to thermal deformation is suppressed.
Patent CA-2180670-A1 (CA)
Title: Truck-mounted grease collection system
Inventor: ONKEN DONALD R
IPC: B60P3/22
Filed: 1996-07-05
Abstract: An improved container for heating grease in a truck including a waste grease holding tank and a heating tank for immersion of a waste grease container into a vat of hot water for loosening the grease in the waste grease container so that the grease in the waste grease container can be dumped into the grease holding tank of the truck. The vat of hot water includes three double walled sides in which an upper edge of the double walls include a plurality of spaced hot water inlet apertures and the bottom of the double wall include fewer smaller drain apertures. The same three sides include hot water flow areas through which hot water flows in order to heat water in the heating tank. The double-walled sides for chambers which receive overflow hot water when a large waste grease container is placed in the vat. These chambers prevent spilling the hot water over the edges of the tank. When the waste grease container is removed the hot water seeks its own level by the water in chambers of the double walls leaking out through the small outlet apertures at the bottom of the double wall. The vat thus recycles hot water for future use in loosening grease in other waste grease containers.
Patent CA-2181737-A1 (CA)
Inventor: KUESCHALL RAINER
IPC: A61G5/10
Filed: 1996-07-19
Abstract: A collapsible wheelchair (10) with two lateral supports (12, 13) on which respectively a drive wheel (18, 19) and respectively a running wheel (20, 21) are fastened and which are rigidly connected by means of a main transverse support (34) and an auxiliary transverse support (32). The former is constituted by two legs (38, 39) connected by means of a hinge joint, which can be arrested on each other by means of an arresting device. The latter has an arresting protrusion (56) hinged on one leg (38). The arresting protrusion runs up on the stop face (62) respectively located opposite it, which is a section of a stop area (64) formed on the other leg (39). At least one of the legs (38, 39) can be advanced in the direction toward the longitudinal center surface of the collapsible wheelchair (10) by means of an advancement device.
Patent CA-2182047-A1 (CA)
Inventor: PFEIFFER NICHOLAS
IPC: F23D99/00
Filed: 1996-07-25
Abstract: A burner and heat exchanger assembly includes a housing having an interior cavity with an interior burner surface. There is a heat exchanger within the cavity for transferring heat from fuel burning in the burner to a fluid. The housing may include a hollow cylinder with the cavity being cylindrical. The interior burner surface is then a portion of a cylindrical inner wall. The heat exchanger includes a cylinder with a cylindrical outer wall spaced-apart radially from the interior surface of the burner. The housing may include a closed end wall at a first end thereof. The burner is adjacent the second end of the housing. The cylinder of the heat exchanger projects into the burner.
Patent CA-2182506-A1 (CA)
Inventor: BOWDEN MARTIN CHARLES
IPC: C07C67/307
Filed: 1995-03-08
Abstract: Intermediates of formula (I), wherein R is H or CH3; processes for preparing them and their use as chemical intermediates, especially for preparing fungicidal acrylic ester derivatives.
Patent CA-2187645-A1 (CA)
Inventor: MORAN JOHN LEO
IPC: H04L27/00
Filed: 1995-12-14
Abstract: A two-wire modem (200, 500, 600) and a method (1000, 1100) select a carrier frequency and a symbol rate from a predetermined plurality of carrier frequencies and symbol rates to communicate with another modem over a communication media in a full duplex mode based on signal and echo characteristics of the communication media estimated by the modem.
Patent CA-2190859-A1 (CA)
Title: Optical telecommunications network
Inventor: COTTER DAVID
IPC: H04L12/56
Filed: 1995-05-23
Abstract: A packet carried on an optical network is routed by carrying out a logic operation on an address word carried in a packet header, and a predetermined discriminator word. A binary routing decision is made in accordance with the product of the logic operation. The operation may be a bit-wise Boolean AND operation. An additional logic operation may be carried out with an additional discriminator word to determine whether the packet is destined for a remoter region of the network. In this case the packet may be steered directly to the remote region.
Patent CA-2194803-A1 (CA)
Title: Method for improving the properties of paper or cardboard
Inventor: HAMUNEN ANTTI
IPC: C08F251/00
Filed: 1997-01-10
Abstract: The object of the invention is a method for improving the surface properties of paper and cardboard. In the method, the surface of the paper or the cardboard is treated with a material composition, which contains a binder fraction and a pigment fraction, wherein part of the pigment is formed by an aqueous phase polymerization product of po-lymerizable monomers and modified starch. The glass tran-sition point (Tg) of the polymer is at least +50 °C.