baber/WOPTO huggingface dataset:
Patent CA-2029049-C (CA)
Title: Extendible waste hose system
Inventor: MERCER ALBERT E
IPC: F16L11/00
Filed: 1990-10-31
Granted: 1994-05-31
Abstract: ABSTRACT OF THE DISCLOSURE         A system for extending and retracting the waste hose for  a  waste  disposal  system  that  is  typically found  on recreational vehicles and includes power or crank-driven hose extender means  for extending the collapsible hose from its collapsed mode stored on-board the recreational vehicle, to its extended configuration which it is used for dumping waste from an RV holding tank into an inlet of an RV waste dump station.          The system includes a specialized hose extension and retraction mechanism,  and a universal coupling at the end of the hose which will fit waste station inlet pipes of all the commonly used sizes,  which run from 3" to 4-1/2 " in diameter.   In addition, a special structure is used to create a 90 degree bend  in  the  outboard  end  of  the  hose,  and  an  optional unidirectional cuff around the hose will hold tension on the hose so it can be stretched between the recreational vehicle and the inlet, but will permit the hose to be manually pushed back through the cuff without substantial resistance.
Patent CA-2029947-C (CA)
Title: Railroad hopper car outlet gate end tube assemblies
Inventor: FRITZ WILLIAM E
IPC: B65D90/54
Filed: 1990-11-14
Granted: 2000-05-30
Abstract: An end tube assembly for the outlet gate of a railroad hopper car includes an end tube and an end tube cap for closing the end tube. The cap is pivotally connected to the end tube and there is a diammetrically opposed latch between the cap and end tube. The cap has a guide which extends toward and over the end tube and there is a ramp on the end tube in alignment with the guide to coaxially direct the guide and cap on the end tube during closure. There is a lock on the end tube adjacent the ramp to prevent relative circumferential movement between the cap and end tube. The end tube mounts a gasket which faces the end tube cap. The cap has a rim extending outwardly therefrom for contact with the gasket. The extension of the rim gradually varies from at least one area of greatest extent to at least one area of lesser extent to compensate for distortion of the cap when it is latched onto the end tube.
Patent CA-2033856-C (CA)
Title: Polarization converter application for accessing linearly polarized satellites with single- or dual-circularly polarized earth station antennas
Inventor: ENGLISH WILLIAM J
IPC: H01Q3/00
Filed: 1991-01-09
Granted: 2000-08-15
Abstract: A single- or dual-circularly polarized earth station antenna is converted into a single- or dual-linearly polarized earth station antenna for accessing linearly polarized satellites. In a first embodiment, a free-space meander line polarizer providing a 90° differential phase shift between two orthogonal polarizations is disposed in front of the earth station antenna feed system. In a second embodiment, a power dividing (transmit) or power combining (receive) network operates in conjunction with differential phase shift circuits to achieve the polarization conversion.
Patent CA-2041725-C (CA)
Title: Grinder discharge chute
Inventor: FORD DAVID F
IPC: A47J42/40
Filed: 1991-05-02
Granted: 1994-07-26
Abstract: Abstract of the Disclosure A coffee grinder discharge chute for use with a coffee grinder operatively attached to a discharge opening in the grinder.  The chute is comprised of a generally vertical elongate channel-shaped body having a generally tubular upper section and a channel-shaped lower portion.  A grind directing cover is hingedly attached to the chute body over the channel-shaped lower portion to adjustably enclose the flow of ground coffee discharged through the chute thereby shielding the discharged ground coffee from ambient air currents.  An end of the chute has sides which are cut back to provide increased grind flow therethrough and an inwardly directed end portion against which the coffee exerts a force to open the hingedly attached cover member.  A chaff suppressing grinder discharge cleaning baffle is attached generally in the upper portion of the chute body.  The baffle includes a plate member to which is attached a plunger and a clean-out lever.  The plunger extends into the discharge opening of the grinder to remove ground coffee which cakes therein and to knock loose any coffee accumulations.  The plunger is automatically moved through the discharged opening by attachment to the plate member which is biasedly moved by a prespecified amount of ground coffee.  The clean-out lever provides manual movement of the plate member and attached plunger.
Patent CA-2041838-C (CA)
Title: Process for preparing benzyl methacrylate and its halogenated or alkyl derivatives on the aromatic ring
Inventor: VANHOYE DIDIER
IPC: C07C67/10
Filed: 1991-05-03
Granted: 1996-09-24
Abstract: This process for the manufacture of benzyl methacrylate and of its halogenated or alkylated derviatives by the reaction of benzyl chloride or of one of its halogenated or alkylated derivatives with an alkali metal methacrylate is characterized in that the reaction is carried out in the presence of not more than 3 mol %, based on the benzyl chloride or a derivative, of a tertiary amine. The alkali metal is chosen especially from lithium, potassium and sodium. The tertiary amine is preferably a tertiary diamine of general formula: <IMAGE> (1)  in which n is an integer ranging from 1 to 10 and R1, R2, R3 and R4, which are identical or different, are alkyl, cycloalkyl or aryl radicals containing from 1 to 12 carbon atoms, functionalized if appropriate and, if appropriate, such that they form a heterocyclic ring with the nitrogen atom(s) carrying them.
Patent CA-2045960-C (CA)
Title: Generic encryption technique for communication networks
Inventor: HAWE WILLIAM R
IPC: H04L29/06
Filed: 1991-06-28
Granted: 1994-03-08
Abstract: GENERIC ENCRYPTION TECHNIQUE FOR COMMUNICATION NETWORKS                        ABSTRACT OF THE DISCLOSURE          A method and related cryptographic processing apparatus for handling information packets that are to be cryptographically processed prior to transmission onto a communication network, or that are to be locally cryptographically processed and looped back to a node processor. A special cryptographic preamble is included in each information packet that is to be subject to cryptographic processing.  The cryptographic preamble contains an offset value pointing to the starting loca-tion of information that is to be processed, and com-pletely defines the type of cryptographic processing to be performed. The cryptographic processor can then per-form the processing a  specified in the preamble with-out regard to a specific protocol. If the packet is to be transmitted onto the network,  the preamble is stripped from the packet after cryptographic process-ing, so that the formats of packets transmitted onto the network will be unaffected by the preamble. Crypto-graphic processing modes include encryption of data for outbound transmission,  encryption of a cipher key for loopback to the node processor,  encryption or decryp-tion of data for loopback to the node processor, and computation of an integrity check value for loopback to the node processor.
Patent CA-2047170-C (CA)
Inventor: BROGI GIULIO
IPC: G08B/
Filed: 1990-12-19
Granted: 1998-02-10
Abstract: Capteur d'infrarouge particulièrement efficace pour la détection d'incendie, comportant un détecteur de flammes (1), un filtre de régulation de la bande passante (2), un dispositif optique pour capter le signal (3), un amplificateur / processeur électronique de signaux (4), un contenant scellé (5) et un socle (6) permettant le libre déplacement du capteur en position élevée. L'utilisation d'une plate-forme rotative appropriée et d'un processeur de signaux permet d'utiliser le capteur pour détecter des sources de chaleur à des températures de 200 à 300 degrés Celsius plus élevées que la température ambiante. Les données fournies ont trait notamment à la direction d'où provient le signal détecté, à son amplitude et à sa variation en fonction du temps. Le capteur est d'une sensibilité spectrale telle que, dans une application privilégiée, il peut contribuer à la protection d'environnements naturels contre les risques d'incendie. Dans des conditions météorologiques normales, le capteur peut détecter une zone d'incendie de six mètres dans un rayon de 10 km.
Patent CA-2051205-C (CA)
Inventor: OLIVER JOHN F
IPC: B41M5/50
Filed: 1991-09-12
Granted: 1996-08-13
Abstract: Disclosed is a receiver sheet which comprises a substrate and a coating which comprises a pigment and a binder comprising polyvinyl alcohol and an additional binder component selected from the group consisting of styrene-butadiene latices, cationic polyamines, cationic polyacrylamides, cationic polyethyleneimines, styrene-vinyl pyrrolidone copolymers, styrene-maleic anhydride copolymers, polyvinyl pyrrolidone, vinyl pyrrolidone-vinyl acetate copolymers, and mixtures thereof. When the receiver sheet is a coated paper, the paper substrate has a Hercules sizing degree of at least about 50 seconds and a basis weight of less than about 90 grams per square meter. When the receiver sheet is a transparency, the substrate is substantially transparent. The receiver sheet is particularly suitable for printing with aqueous based inks, such as those employed in ink jet printing systems.
Patent CA-2051836-C (CA)
Title: Personal data card construction
Inventor: FLYNN RICHARD MICHAEL
IPC: B42D15/10
Filed: 1991-09-25
Granted: 1996-07-23
Abstract: A personal data card (10), also known as a smart card, comprises a lamination of thermoplastic sheets. One sheet (140) is a circuit board made frompolyester film having metallic interconnection paths (144) on its surface formed by etching. Smart card circuitry, including one or more frangible semiconductor chips (200), are mounted on the circuit board. Another sheet (130) is a structural (strength) member which comprises polyester film that has been heat-stabilized and includes a heat-activated adhesive (133) on both sides (131, 132). The structural member has through-holes (136, 137) for receiving components (200, 500) mounted on the circuit board when these sheets are brought together, and for admitting an epoxy encapsulant (300, 400) poured therein. When the encapsulant cures, it is much more rigid than the polyester card body and thus protects the semiconductorchips from breaking when the card is bent. Top and bottom sheets (110, 150) of the smart card comprise thin films of polyvinyl chloride that protect the card from external contaminants and have identical thermal expansion characteristics so that the laminated structure does not warp with changing temperatures.
Patent CA-2054506-C (CA)
Inventor: KLEMMER ROBERT A
IPC: H01R43/20
Filed: 1991-10-30
Granted: 2001-07-31
Abstract: A modular press block assembly for use in a press tool to mount an electrical connector assembly having a housing and depending terminal pins into a printed circuit board. The modular press block assembly includes a pair of end holders and at least one modular press block positioned between the end holders for engaging the connector assembly and pressing the terminals into the printed circuit board.      The invention contemplates a plurality of the modular press blocks of different sizes to form a set thereof for accommodating a plurality of different sizes of connector assemblies. Complementary interengaging keys are provided between the end holders and the modular press blocks and between the press blocks themselves to define proper positioning of the press blocks between the end holders and to maintain that positioning when the end holders are held against the sides of the press block. Spacer blocks also can be used between adjacent press blocks. Tie rods span the end holders to hold the end holders against the sides of the outermost press blocks. The tie rods are located outside the bounds of the press blocks whereby the press blocks can be located between the end holders without removing the tie rods.
Patent CA-2055784-C (CA)
Title: Hierarchical memory controller
Inventor: KOKOSZKA DARYL J
IPC: G06T15/00
Filed: 1991-10-22
Granted: 1998-05-19
Abstract: A memory apparatus including a circuit for receiving and serially storing a plurality of instructions and a plurality  of buffer memories  each  including  a buffer controller for regulating access to that buffer.   Also included  is  a  circuit,   connected  to  each  buffer controller and said receiving circuit, for accessing one or more of said buffers in response to at least one other serially  stored  instruction,  accessing  at  least  one remaining buffer.
Patent CA-2057617-C (CA)
Title: Communications signal
Inventor: WEDDING BERTHOLD
IPC: H04B10/50
Filed: 1991-12-13
Granted: 1999-01-19
Abstract: In a transmitter including a carrier source (TQ) an input signal (a) is present which contains the information to be transmitted and is composed of signal components (a1) having amplitudes less than a predetermined threshold value (U0) or equal to the threshold value (U0) and signal com-ponents (a2) whose amplitudes are less than the threshold value (U0) or equal to the threshold value (U0).  For the purpose of identification, the two signal components (a1, a2) are sampled in different ways, for example at different frequencies (f1, f2), and are combined into a modulation signal (f) in such a manner that the two signal components have the same sign.  In a receiver (E), a circuit arrangement is provided which identifies the sign of the partial signals on the basis of their different sampling frequencies (BP1, BP2), demodulates envelope curves and combines them into an output signal (m) which corresponds to the signal (a).    The transmitter and receiver (L, E) are advantageously components of an analog optical transmission system. They prevent the clipping effect while simultaneously increasing the degree of modulation.
Patent CA-2064759-C (CA)
Title: Storage head for a blow moulding machine
Inventor: LANGOS PETER
IPC: B29C48/475
Filed: 1991-05-28
Granted: 1998-01-20
Abstract: The invention relates to a storage head for a blow moulding machine used for the intermittent production of multi-layer co-extruded and blow-moulded thermoplastic hollow bodies.  To improve the product quality and to increase throughput, each distributor is designed as a spiral channel distributor which distributes the individual molten plastic streams uniformly at the periphery.  The ejector consists of a least two concentric tubular pieces and the peripherally distributed plastic streams issue from the front face of the ejector through an annular gap into the storage space in the storage head housing below the injector.
Patent CA-2068036-C (CA)
Inventor: BRADY FRANCIS
IPC: D04H1/4291
Filed: 1992-05-05
Granted: 1997-07-15
Abstract: Nonwoven assemblies bonded with water dispersible or sensitive hot melt adhesives comprising 50-100 parts of a graft copolymer of 40-85% of at least one vinyl monomer and 15-60% of at least one water soluble polyalkylene oxide polymer, and 0-50 parts by weight of tackifying resin.  The compositions may also be employed as water sensitive binders in the manufacture of the nonwoven. Vinyl acetate is the preferred vinyl monomer whereas ethylene oxide homo- or copolymers are the preferred polyalkylene oxide.  The use of tackifying resin is optional and may be undesirable for many of the applications.
Patent CA-2068065-C (CA)
Inventor: KLEINBERG WILLIAM THOMAS
IPC: F25J3/04
Filed: 1992-05-06
Granted: 1996-12-03
Abstract: The present invention is an improvement to a process for the separation of air into its constituent components in a cryogenic distillation column system having a high pressure column and a low pressure column which are thermally integrated with each other.  The improvement for producing both nitrogen and oxygen products at a medium pressure comprises the following steps: (a) operating the low pressure column at a pressure of between 10 to 75 psig and the high pressure column at a pressure which is about 60 to 160 psi higher than the low pressure column; (b) removing and subsequently warming at least a portion of the lower pressure nitrogen overhead from the top of the low pressure column and recovering the warmed, lower pressure nitrogen overhead portion as medium pressure gaseous nitrogen product; and (c) recovering medium pressure gaseous oxygen product from the low pressure column.  There are two alternative ways to recover the medium pressure oxygen product of step (c).  In the first, a portion of the liquid oxygen bottoms can be removed from the low pressure column and boosted in pressure, and then subsequently vaporized.  This vaporized, boosted pressure, liquid oxygen is recovered as medium pressure gaseous oxygen product.  In the second, a portion of the vaporized liquid oxygen bottoms is removed from the low pressure column and warmed.  This warmed, vaporized liquid oxygen bottoms would be recovered as the medium pressure gaseous oxygen product.
Patent CA-2070668-C (CA)
Title: Address processor for a signal processor
Inventor: ANDRE TORE MIKAEL
IPC: G06F5/06
Filed: 1990-12-05
Granted: 1996-06-18
Abstract: The invention relates to an address processor for a signal processor. This address processor comprises means for address calculation in a read/write memory containing at least one circular buffer for storing state variables of digital filters. This means comprises a set (S) of registers for storing the current folding address (mod pointer) for each circular buffer relative to the absolute start address of the buffer. Furthermore, a calculation unit (+) is included for (1) adding the current folding address to the displacement (dataaddr,writeaddr) of a selected state variable relative to the corresponding buffer start address, (2) reducing the sum obtained in step (1) with the corresponding buffer length (modnumb) if the sum exceeds or is equal to this buffer length, and (3) adding the buffer start address to the result obtained in (2) for obtaining the absolute address of the selected state variable.
Patent CA-2071146-C (CA)
Title: Taste preserving, mild oral hygiene compositions
Inventor: CHANG TIANG-SHING
IPC: A61K8/64
Filed: 1992-06-12
Granted: 1999-06-08
Abstract: This invention relates to a mild oral hygiene composition such as a toothpaste, dental gel, mouthrinse or toothpowder containing a mild surfactant, protein fatty acid condensate or acid hydrolyzed, hydrolyzed animal protein or the mixtures thereof, and in combination therewith, mild high foaming surfactant, e.g., disodium cocoamido MIPA sulfosuccinate or disodium oleamido PEG-2 sulfosuccinate or disodium lauryl sulfosuccinate or the mixtures thereof; or a natural emulsifier, e.g., lecithin, or both a mild surfactant and a natural emulsifier.
Patent CA-2071410-C (CA)
Title: Separator
Inventor: STAMP JEFFREY
IPC: B01D50/00
Filed: 1992-06-17
Granted: 2000-01-18
Abstract: A separator which can be used for separating water from an air/water mixture in an aircraft where the air is to be supplied to electronics equipment comprises a chamber containing a generally tangential inlet tube through which a mixture is supplied to a curved side wall section of the chamber to separate water from the air by centrifugal action. The efficiency of the unit is improved either by moving the filter unit away from the centre of the chamber or by providing a guide plate between the filter unit and the curved side wall on which the water coalesces. In this latter case, the filter unit can also be offset from the centre of the chamber to give even greater improvement and efficiency.
Patent CA-2071621-C (CA)
Title: Aldehyde derivatives
Inventor: HOSODA AHIHIKO
IPC: C07C333/08
Filed: 1992-06-18
Granted: 1996-08-06
Abstract: Aldehyde derivatives with a specific calpain inhibiting activity and a platelet-aggregation inhibiting effect with formula (I) or formula (II):       (I) wherein R1 represents an aromatic hydrocarbon group, a heterocyclic group, or a group of -X-R3 in which X represents O, -S(O)m- (m = 0, 1, or 2), and R3 represents an aromatic hydrocarbon group, a heterocyclic group, or an alkyl group; Z represents R4-Y- or R6O-CH(R5)- in which Y represents a 3- to 7-membered nitrogen-containing saturated heterocyclic group, or a single cyclic saturated hydrocarbon group, R4  represents an alkyl group, an alkenyl group, an alkynyl group, an acyl group, a sulfonyl group, an alkoxycarbonyl group, a carbamoyl group, or a thiocarbamoyl group, R5  represents hydrogen, an alkyl group, or an aromatic hydrocarbon group, and R6 represents an acyl group, a carbamoyl group, a thiocarbamoyl group, or an alkyl group; and n is an integer of 1 to 5.       (II) wherein R7, R8, R9, and R10 are defined in the specification.
Patent CA-2087705-C (CA)
Title: Hydraulic control system
Inventor: FRENETTE REAL NOEL
IPC: E02F9/20
Filed: 1991-07-12
Granted: 2001-07-24
Abstract: An articulated arm employs a controller to generate .delta.r, .delta..THETA. and .delta.z signals for controlling the movement of the arm in r, .THETA. and z directions to produce movement of an end point from an initial location along a desired path toward a desired location. The actual location is determined by sensing the relationships between the arm segments and determining the actual location of the end point. The actual location is continuously compared with the desired location represented by the r, a and z signals and, if the difference between the actual location and desired location exceeds preselected limits, the .delta.r, .delta..THETA. and .delta.z are scaled down thereby redefining the desired location to ensure that the actual arm movement does not lag an unacceptable amount relative to the desired location.
Patent CA-2088986-C (CA)
Title: Dental crown
Inventor: FUNG JOHN
IPC: A61C5/77
Filed: 1991-07-05
Granted: 2000-09-12
Abstract: A construction applicable to dental crowns, facings, inlays, and the like including a stainless steel wire mesh (3) shaped to fit closely over a prepared tooth remnant (1), and being integrally bonded to a cavity (111 of a crown body (4) so as to form an integral crown (5) ready for use. The integral crown (5) can be adhered to the remnant (1) in a conventional manner, for instance by using dental filler. The body (4) and mesh (3) are very strongly joined by a mechanical interlock action by virtue of the mesh texture.
Patent CA-2089678-C (CA)
Title: Process and apparatus for disposing of dust-form substances from combustion plants
Inventor: BULLMANN GUIDO
IPC: C22B4/08
Filed: 1993-02-17
Granted: 1996-06-25
Abstract: Dust like substances which are recovered from a garbage or refuse incinerator are destroyed, eliminated or disposed of by smelting in a low shaft electric furnace having at least one electrode heating a slag melt therein.  The dust is introduced into the melt by a lance opening beneath the melting surface and gas produced by the  smelting process is subjected to cleaning.   The slag may be continuously or discontinuously withdrawn and slag formers may be compensatorily added.  A metal bath consist-ing predominantly of iron may be provided below the slag melt to protect metallic components of the dust upon the smelting there-of.
Patent CA-2092238-C (CA)
Title: Decreased sodium sulfate production in chlorine dioxide generation
Inventor: BECHBERGER EDWARD J
IPC: C01B11/02
Filed: 1993-05-12
Granted: 1999-03-30
Abstract: Chlorine dioxide is produced from sodium chlorate, sulfuric acid and methanol in a boiling reaction medium while a subatmospheric pressure is applied, with the concomitant production of a decreased quantity of sodium sulfate by-product. The sodium sesquisulfate produced in the chlorine dioxide generator is metathesized to neutral form and feed solution for the chlorine dioxide generator is electrolyzed to acidify the same and remove sodium ions as useful sodium hydroxide by-product.  A decrease of up to 70% in by product sodium sulfate can be attained without increasing the evaporative load on the chlorine dioxide generator.