baber/WOPTO huggingface dataset:
Patent CA-2182843-A1 (CA)
Title: Pressure equalization valve
Inventor: BHIDE YESHWANT K
IPC: F16K11/074
Filed: 1996-08-07
Abstract: A pressure equalization valve for alternatingly equalizing pressures between a first fluid source and at least two second fluid sources is disclosed. The pressure equalization valve includes a valve body, which includes a first port in fluid communication with the first fluid source and at least two second ports in fluid communication with the at least two second fluid sources, respectively, and a valve gate movable between a first equalizing position, wherein the valve gate allows fluid flow through one of the second ports and restrains fluid flow through another of the second parts to equalize substantially the fluid pressure between the first fluid source and one of the second fluid sources, and a second equalizing position, wherein the valve gate restrains fluid flow through the one of the second ports and allows fluid flow through the other of the second ports to equalize substantially the fluid pressure between the first fluid source and another of the second fluid sources. The valve further includes a chamber in the valve body between the first part and the second ports, wherein, as measured in planes perpendicular to the central axis of the first port, a largest cross sectional area of the chamber is at least 10 times larger the smallest cross sectional area of the first port.
Patent CA-2183022-A1 (CA)
Title: Process for the batchwise preparation of poly-p-phenylene terephthalamide
Inventor: BANNENBERG-WIGGERS ANGELICA EL
IPC: B29B9/02
Filed: 1995-02-09
Abstract: Process for the batchwise preparation of poly-p-phenylene terephthalamide polymer by means of reacting approximately equimolar amounts of p-phenylene diamine and terephthaloyl dichloride in a solution containing N-methyl-2-pyrrolidone and calcium chloride, with the reaction being carried out in a cylindrical reaction vessel equipped with a single mixing gear used as stirrer and granulator. the contents of the reaction vessel being whirlingly mixed as terephthaloyl dichloride is added, the formed polymer being crumbled, and the reaction and the crumbling taking place in one and the same reaction vessel. The whirling mixing ensures that the terephthaloyl dichloride is very thoroughly mixed into the solution of N-methyl-2-pyrrolidone, calcium chloride, and p-phenylene diamine before the reaction between the reactants causes a very rapid increase in viscosity. The quality of the product obtained by this process is very high.
Patent CA-2183851-A1 (CA)
Title: Membrane and method for the separation of aromatic hydrocarbons from a mixture of various aromatic hydrocarbons or from a mixture of such aromatic hydrocarbons and non-aromatic hydrocarbons
Inventor: TINNEMANS ALOIJSIUS HENRICUS A
IPC: C08G63/193
Filed: 1996-08-21
Abstract: The invention relates to membranes and to a method for the separation of aromatic hydrocarbons from a mixture of various aromatic hydrocarbons or from a mixture of such aro-matic hydrocarbons and non-aromatic hydrocarbons. According to the invention the membrane is formed from aromatic poly-esters on the basis of aromatic diacid chlorides in combina-tion with either bisphenol-A-like bisphenols, or a bisphenol which is completely built up of aromatic centres.         Preferably the membrane is formed from aromatic polyesters on the basis of aromatic diacid chlorides such as terephthaloyl chloride, isophthaloyl chloride, 5-t-butyliso-phthaloyl chloride, or PIDA in combination with bisphenol-A-like bisphenols, such as 4X-BPN, 4X-BPT, 4X-BPI.
Patent CA-2186117-A1 (CA)
Title: Flip side box with moisture barrier
Inventor: CANNON BILLY P
IPC: B65D5/72
Filed: 1995-03-24
Abstract: A package (10, 40) especially suited for shipping and storing unwrapped sheets of paper comprises a box (11) having a lid (12) that may be removed and one side (20, 20') which may be pivoted down when the lid (12) is removed to facilitate access to the contents of the box (11) for ease of unloading of paper from the box (11) and ease of reloading. A preferred construction employs a moisture barrier (38) to maintain the moisture content of the paper in the box (11) within acceptable limits when the package (10, 40) is subjected to adverse environmental conditions. In accordance with another aspect of the invention, the package (10, 40) is recyclable.
Patent CA-2187163-A1 (CA)
Title: Method and equipment for treatment of a liquid flow to be cleaned and passed into a flotation plant or equivalent
Inventor: JARVENPAA VILJO
IPC: B01F25/60
Filed: 1995-04-04
Abstract: The invention concerns a method and an equipment for treatment of a liquid flow to be cleaned and passed into a flotation plant or equivalent. In the method, a part of the liquid flow to be cleaned that flows along the flow line, or cleaned liquid coming from the outlet of the flotation plant, is passed along a first branch line as a liquid flow into a pump. The suction capacity of the pump is regulated so that the pump sucks gas as a flow, the gas that has been sucked into the pump being mixed with the liquid flow flowing in the first branch line, and further mixing of the gas and liquid take place in the discharge pipe of the pump. The mixed flow of gas and liquid is passed along the discharge pipe of the pump into a mixing part, where the discharge pipe of the pump ends in a pressure release. The rest of the liquid flow to be cleaned is passed along a second branch line as a liquid flow into the mixing part, where the liquid flow flowing along the second branch line is mixed with the liquid flow flowing in the discharge pipe of the pump, in which case, in the mixing part, out of the flow that is discharged from the pressure release, the gas bubbles in the liquid flow that contains dissolved gas are released. The liquid flow discharged from the mixing part is passed as a flow along a mixing duct into the flow line of the liquid flow to be cleaned and further as a flow into the flotation plant or equivalent.
Patent CA-2189292-A1 (CA)
Inventor: PATELLI QUINTO
IPC: F16B7/14
Filed: 1996-10-31
Abstract: A device for mutual locking concentrically, overlapping telescopic tubes which is actuated and maintained by axial pressure. The mutual locking device may be used to provide telescopic handles for floor brushes, brooms, mops and the like.  An internal tubular section with a pin mounted to the end thereof is concentrically inserted within an external tubular section. A wedge-shaped tongue projects axially from the pin. Positioned circumferentially around the pin is an expansion bush provided with a wedge-shaped slot extending at least partially along the length of the bush and ending at a proximal end with asymmetrical entrance shoulders. Upon sliding the internal tubular section into the external tubular section, the tongue causes the bush to expand to lock the two tubular sections together by friction. The protruding entrance shoulder of the bush being offset in an axial direction relative to the other, ensures that torsional movement by the user causes the tongue to intercept the protruding shoulder while axial thrusts by the operator causes the tongue to slide further into the wedge-shaped slot, both of which actions cause the bush to expand further. As a result the bush diametrically expands causing the shell to contact the inner surface of the external tubular section generating friction which, in turn, mutually locks the tubular sections.
Patent CA-2189678-A1 (CA)
Title: Dynamic balancing method and apparatus
Inventor: TAYLOR GARY R
IPC: F16F15/36
Filed: 1995-05-19
Abstract: A counterbalancing apparatus for dynamically balancing an out of balance rotating member. A first series of weights having identical size and weight are mounted to freely move within a first groove or race when the apparatus is rotating after being mounted to a shaft or other rotatable member. A second series of weights having identical size and weight are similarly mounted to freely move within a second groove or race located inside of the first race. The first series of weights is different in size and weight from the second series of weights. A locking apparatus locks and releases the weights at predetermined angular velocities. Fluids of different viscosities and race configurations are additionally used to vary weight dynamics.
Patent CA-2193925-A1 (CA)
Title: Compounds containing cyclic amidine and uretdione groups, a process for their preparation and the use thereof
Inventor: GRAS RAINER
IPC: C07D403/12
Filed: 1996-12-24
Abstract: Compounds containing cyclic amidine and uretdione groups, a process for their preparation and the use thereof Compounds containing cyclic amidine groups and uretdione groups, havingthe following composition:     (see figure I)                        ?, in which X   is O or NR~, R        is the hydrocarbon radical of isophorone diisocyanate:     (see figure II) R1       is a substituted (cyclo)alkylene radical which is substituted with 0 - 3 CH3 groups and has 2 -14 carbon atoms;          R~ and R3 are identical or different (cyclo)alkyl radicals having 1 - 10 carbon atoms or are phenyl radicals, n        is 0-5, and B        is 0 -1 NCO group and/or 1 - 0 imidazoline-blocked NCO group:     (see figure III)
Patent CA-2197175-A1 (CA)
Title: Head mounted display optics
Inventor: MARSHALL IAN
IPC: G02B27/00
Filed: 1995-08-10
Abstract: A head mounted display for use in virtual reality applications and typically in the form of a slim visor is provided with binocular magnifying optics which permit the binocular viewing of an image displayed by a single miniature LCD video screen (501) magnified at infinity focus at left and right exit pupils (507). A vertically offset beamsplitter is provided having two elements (502, 508) being substantially mutually perpendicular planar semi-reflecting mirrors (in the illustrated embodiment) disposed respectively above or below the horizontal optical axis of the LCD (501). A single image viewed from the LCD (501) passes through the semi-reflecting mirrors (502, 508) to be reflected off a concave mirror (503). On reflection part of the image is reflected off element (502) and then by a right hand fold mirror (510) toward the right hand exit pupil (507). Another part of the image is similarly reflected off element (508) and left hand fold mirror (510) toward the left hand exit pupil (507). Magnification and/or optical correction of the images viewable at eyepoints (507) can be effected by a respective one of lens arrays (505). In other embodiments of the invention the disposition of optical elements permits the use of vertically offset beamsplitters which are wholly reflective, i.e. not semi-transmissive.
Patent CA-2198258-A1 (CA)
Title: Amino acid chelates having improved palatability
Inventor: PEDERSEN MARK
IPC: A23L27/20
Filed: 1995-08-21
Abstract: A palatable metal amino acid chelate for administration to humans and other warm-blooded animals is disclosed wherein there are sufficient ligands to provide ionic and coordinate covalent bonds equal to the coordination number of the central metal ion while, at the same time, maintaining charge balance in the chelate molecule. There must be at least one ligand of the polydentate type which must be an .alpha.-amino acid with the further proviso that any unidentate or polydentate ligand(s) must be charge balanced organic ligands.  Charge balancing may be accomplished by means of an organic acid and dicarboxylic, hydroxycarboxylic, hydroxydicarboxylic or hydroxytricarboxylic acids in particular, which maintains the chelate molecule as an optimum pH for purposes of stability and palatability.
Patent CA-2202980-A1 (CA)
Title: Expendable underwater vehicle
IPC: B63B22/00
Filed: 1995-06-06
Abstract: An expendable underwater vehicle for use in training naval forces in anti-submarine warfare in ocean waters, including shallow waters, is between about three to five feet in length and about five inches in diameter, and it includes various improvements which make successful operations in shallow ocean waters, and improved operation in all ocean waters, possible. The improvements include a one-piece nose cup which allows the expendable underwater vehicle to be air launched into shallow water, a scuttle plug which allows water to fill the expendable underwater vehicle after the vehicle is expended and drops to the bottom of the ocean, and rudders and elevators of increased surface area which improve controllability of the vehicle in the water.
Patent CA-2204490-A1 (CA)
Title: Breast prosthesis
Inventor: WILD HELMUT
IPC: A61F2/52
Filed: 1996-10-14
Abstract: The invention relates to a breast prosthesis consisting of a shell-shaped body made from a soft and elastic plastic which is welded into plastic films and so forms a first chamber and of a second chamber filled with a different filling material facing the wearer during wear and connecting to the first chamber. In accordance with the invention, the filling material of the second chamber consists of a thixotropic material.
Patent CA-2204603-A1 (CA)
Title: Pacemaker tachy determination based on 2:1 sensing
Inventor: HESS MICHAEL F
IPC: A61N1/362
Filed: 1996-09-13
Abstract: Some false tachy detection prevention algorithms miss blocked 2:1 sensing and therefore miss some true tachy situations. Here an algorithm that uses sensed far field R waves to determine whether to search for blocked 2:1 sensing is implemented and a search algorithm is also described.
Patent CA-2205958-A1 (CA)
Title: Magnetic arrangement for therapeutic application
Inventor: BAERMANN HORST
IPC: A61N2/06
Filed: 1996-07-23
Abstract: The object of the invention is a magnet arrangement for the treatment of skin or tissue regions of the human body close to the surface, having several mechanically connected magnetic mouldings (M1, M2) forming an effective surface at or near which use is made of the magnetic field there. Use has long been made in therapeutics of flexible magnets of plastic-bonded hard ferrite having at least one north and one south pole on their effective surface facing the patient, where the pole configuration is differently arranged in accordance with the therapeutic purpose. It is thus possible to generate magnetic inductance only in regions of the skin or tissues close to the surface. A magnet arrangement of several magnetic mouldings of high coercive field strength with different energy densities is proposed to attain locally limited higher magnetic inductances.
Patent CA-2210496-A1 (CA)
Title: Borabenzene based olefin polymerization catalysts
Inventor: ETHERTON BRADLEY P
IPC: C08F10/00
Filed: 1995-12-20
Abstract: Disclosed is a catalyst having general formula (I), where Q is a ligand containing the ring (II), R is hydrogen, N(R')2, OR', or R', each R' is independently selected from alkyl from C1 to C10, aryl from C6 to C15, alkaryl C7 to C15, and aralkyl from C7 to C15, each X is independently selected from hydrogen, halogen, alkoxy from C1 to C10, dialkylamino from C1 to C10, methyl, (III), each R1 is independently selected from halogen, alkoxy from C1 to C10, and R', L is (IV), (V), (VI), (VII), (VIII), Q, or X, where L can be bridged to Q, B is an optional base, "n" is 0 to 5, and M is titanium, zirconium, or hafnium.
Patent CA-2210511-A1 (CA)
Title: Improved nutritive composition resulting from the soaking of corn and its production process
Inventor: SANIEZ MARIE HELENE
IPC: A23L7/104
Filed: 1997-07-11
Abstract: Nutritional composition produced by steeping of corn (maize) comprises a ratio of concentrations of inorganic, and total phosphorus (Pi:Pt) 35:95%, a protein concentration, as determined by the C test, of ≤ 5 and a total content of reducing substances of ≤ 0.9%.
Patent CA-2216303-A1 (CA)
Title: Crosslinkable surface coating
Inventor: ESSER RICHARD J
IPC: C08F8/32
Filed: 1993-02-09
Abstract: A novel storage stable crosslinkable aqueous polymeric formulation comprising an aqueous carrier; at least two polymeric ingredients, one of which has acid-functional pendant moieties and the other of which has entamine-forming pendant moieties; a non-polymeric polyfunctional amine having at least two amine-functional moieties; and base. The amount of base contained within the formulation is effective for inhibiting gellation.
Patent CA-2220031-A1 (CA)
Title: Double heterojunction light emitting diode with gallium nitride active layer
Inventor: EDMOND JOHN ADAM
IPC: H01L33/00
Filed: 1996-04-15
Abstract: A double heterostructure (24) for a light emitting diode (20) comprises a layer of aluminum gallium nitride a first conductivity type (25); a layer of aluminum gallium nitride having the opposite conductivity type (27); and an active layer of gallium nitride (26) between the aluminum gallium nitride layers, in which the gallium nitride layer is co-doped with both a Group II acceptor and a Group IV donor, with one of the dopants being present in an amount sufficient to give the gallium nitride layer a net conductivity type, so that the active layer forms a p-n junction with the adjacent layer of aluminum gallium nitride having the opposite conductivity type.
Patent CA-2225686-A1 (CA)
Title: Reusable fluid filter and adapter
Inventor: SMITH GERALD F
IPC: B01D35/143
Filed: 1996-06-27
Abstract: A fluid filter which comprises a canister having an open end and a closed end, the canister sealing to an adapter body to prevent leakage between the canister and the adapter body, the adapter body having a plurality of angled fluid inlet ports extending through the adapter assembly body into the cavity formed by the canister and the adapter body assembly, a threaded fluid outlet port extending through the adapter body, a threaded ring adapter for adapting the outlet port to a variety of filter receptacles, a multistage wire mesh filter element having a weave which is designed to prevent fluid contaminants from passing through the filter element while inhibiting the contaminant particles from becoming lodged in the filter mesh, the fluid inlet ports in the adapter body being formed at an angle to create a tornado type turbine fluid motion within the canister to suspend contaminants which are blocked from passage through the screen in the fluid and allow such contaminants to settle in the canister out of the flow path of fluid being filtered, a sediment chamber formed in the canister by a sediment trap, a relief valve assembly in the canister to allow fluid to bypass the filter element in the event the filter element becomes clogged, an anti-siphon valve in the fluid filter to prevent unfiltered fluid from being flushed from the filter, a switch for warning of a filter which needs to be removed and cleaned, and a magnetized drain plug to assist with contaminant removal from the fluid and allow the canister to be drained prior to removal to reduce injury and spillage.
Patent CA-2226288-A1 (CA)
Inventor: POLLITT CLIFFORD BRUCE
IPC: E04F15/00
Filed: 1996-08-13
Abstract: A method of forming a tiled floor without adhesive beneath the tiles comprises laying the tiles, applying filler between adjacent tiles after laying, and holding the tiles in relative position. A flexible sheet (140) with apertures (141) can be laid on a substrate (9) and the apertures filled with grouting material and the tiles (143) laid on the sheet (140), the spaces (146) between the tiles receiving filler material. The tiles (111) may have a groove (113) in peripheral sides to provide a keying effect for the filler material. The filler material may be settable after application and hold the tiles in position.
Patent CA-2226543-A1 (CA)
Title: Coupe circuit avec mecanisme de verrouillage de la manette de commutation
Inventor: SIEBELS RANDALL LUTHER
IPC: H01H9/28
Filed: 1997-05-14
Abstract: Cette invention porte sur un mécanisme de verrouillage pour commutateur électrique interdisant tout mouvement à une manette de commutation. Cette manette, qui est enfermée dans une coque ou boîtier, se déplace, en cours d'utilisation, le long d'une trajectoire, entre une première et une seconde position, pour ouvrir ou fermer des contacts électriques servant eux-mêmes à ouvrir ou à fermer un circuit. Un premier et un second évidement ont été moulés dans la coque afin de loger un mécanisme de fermeture sur le trajet de la manette de commutation. Ce mécanisme de verrouillage comporte une première et un seconde branche, pourvues d'un montage à pivot comme il en est d'une paire de ciseaux. La première branche comporte un premier pied, solidaire de la branche, en saillie par rapport à la seconde branche et la seconde un second pied, solidaire de la branche, en saillie par rapport à la première branche, à l'exemple des extrémités des lames d'une paire de ciseaux pourvue de saillants opposés. La première et la seconde branche possèdent, chacune une ouverture opposée au premier et au second pied, respectivement, comme les branches d'une paire de ciseaux en quelque sorte. Le premier pied vient s'insérer dans le premier évidement et le second pied dans le second évidement. Une tige de verrouillage, un cadenas ou un élément fileté, vient se fixer dans l'ouverture afin de maintenir les pieds en contact avec les évidements. Ce mécanisme de verrouillage est, de la sorte, positionné en travers du trajet de la manette de commutation, ce qui permet de bloquer celle-ci dans la position désirée. Il devient ainsi possible de maintenir le circuit sous tension ou hors tension et ce, jusqu'à décision contraire.
Patent CA-2230854-A1 (CA)
Title: Forced call disruption in wireless telephone systems
Inventor: MCKERNAN RANDOLPH W
IPC: H04W12/00
Filed: 1996-08-30
Abstract: A method and apparatus which provide the ability to disrupt normal completion of a specific call made through a wireless telephone system. The specified call can be forced to be immediately ended, re-routed immediately to a selectable destination, or linked to a local voice frequency interface. The disruption of the call can occur at any point in time over the duration of the call. The decision to disrupt the call, as well as which action to take against the call, can be selected manually by a human or automatically through a standard data interface provided. The call disruption apparatus can be interfaced to the wireless system through a circuit physically connected to the wireless telephone system equipment, or through a modulated radio frequency interface.
Patent CA-2231057-A1 (CA)
Title: Belt tensioner
Inventor: OBERG H W
IPC: F16H7/12
Filed: 1998-03-03
Abstract: A belt tensioner of the Zed type with a base member, a pivot-arm, a pivot-pin, a pulley attached to the pivot-arm, a torsional spring attached between the base member and pulley, and wherein the base member has a "tube pan" shape with a cantilevered inner wall that supports the pivot-pin, a cantilevered outer wall, and a bottom wall interconnecting the inner and outer walls and oriented with the bottom wall juxtaposed the pivot-arm. Optionally, the spring connected to a damping mechanism that generates a reaction force in generally the same direction as a belt force or hub load. In another embodiment, a second, damping spring generates a reaction force in generally the same direction as the belt force and a constant damping force.
Patent CA-2231327-A1 (CA)
Title: Improved gate change facility
Inventor: SEAL MARTIN SEDGLEY
IPC: B62D65/00
Filed: 1996-08-23
Abstract: A vehicle body framing station includes tooling gate supports movable along paths towards and away from the framing station to pick up tooling gates from racks adjacent the paths and present the tooling gates to opposite sides of the framing station, and return the tooling gates to their racks to permit other tooling gates to be picked up and presented instead. In one arrangement the racks are mounted on carousels rotatable to present tooling gates carried thereon in a position from which they can be picked up by the support means for transfer into the framing station and vice versa, wherein other tooling carried by other racks on the carousels is simultaneously presented for tool change or repair.