baber/WOPTO huggingface dataset:
Patent CA-2049282-A1 (CA)
Title: Earth boring rotary reamer
Inventor: CROOKS DALE G
IPC: E21B10/30
Filed: 1991-08-15
Abstract: Abstract Conventional earth boring reamers use a series of three or more hard-surfaced rollers which rotate upon a shaft and ream a previously drilled hole in the earth to a prescribed diameter. Normally,  such shaft and roller combinations are held in place within the reamer body by bearing blocks.  The bearing blocks fix the rollers at the proper position and provide surfaces to bear the axial thrust of the rollers.  In this invention the bearing blocks are eliminated.  The shafts are fixed within the reamer body using a primary and a secondary locking mechanism.   Hardened thrust washers are utilized to counter the axial load of the rollers.    The utility of this reamer design is:   a smaller diameter body, matching the diameter of the drill string, can be utilized; there is no need for the construction of bearing blocks and the metal removal from the body needed to accommodate such blocks: and the use of thrust washers allows the roller shaft to be of a single diameter and reversible.
Patent CA-2049654-A1 (CA)
Title: Membrane, e.g. for use in an ileostomy bag
Inventor: STEER GRAHAM E
IPC: A61F13/15
Filed: 1991-08-21
Abstract: A method of making a gas-permeable liquid-impermeable membrane includes the steps of perforating a film of linear low density polyethylene (or other suitable polyolefin) in such a way as to yield an array of holes each having an average diameter of approximately 350 , and then solution coating the needled film with a porous polyurethane material having pores of a pore size of 1 to .      Such a film is advantageously embodied in an ileostomy bag, and is fixed to a bag wall thereof in a location to prevent faecal material contacting the ~  bag filter, by a heat or RF wedding operation by which the polyolefin is welded to the bag wall which carries the filter. In use, the polyurethane is exposed to the bag contents, and permits gases to pass but prevents any liquid reaching the filter.
Patent CA-2051121-A1 (CA)
Title: Phase-locked circuit and frequency multiplier obtained
Inventor: MARBOT ROLLAND
IPC: H03L7/081
Filed: 1991-01-30
Abstract: The frequency multiplier (20) consists of a phase-locked circuit having a phase comparator (11) for the control of a plurality of lag elements (130-137) supplying successively shifted phase signals (CL0-CL7) to a logical adder (16) made of exclusive OR gates.
Patent CA-2052084-A1 (CA)
IPC: E03F7/04
Filed: 1991-09-23
Abstract: A back water valve system to be installed at  the  entrance of  the  city  sewer  system  into  a dwelling   eliminates   a   series   of secondary conventional  back  water  valves.  The  valve  system includes  a  one-way  check  valve  and  an  opening thereabove partly obstructed by a screen for allowing for free circulation of sewer gases through the valve system.  The screen prevents  the entrance  into the dwelling of small animals such as rats from the city sewer system. A pair of upper flappers each provided with a float are pivotally mounted on the dwelling side  and on  the  city  sewer  side  of  the  opening. Therefore, the one-way check valve prevents spillage into  the  dwelling  of  sewer  back-ups.  The  upper flapper on the city sewer side is adapted to close the opening and its screen also upon sewer back-ups to prevent spillage on the dwelling side of the valve system and also to prevent fouling of the screen. The flapper located on the dwelling side of the opening is adapted to close the opening and its screen when there is a sufficient flow of waste water coming from the dwelling for preventing fouling of the screen. Therefore, the opening and its screen allow for free passage  of  the  sewer  gases  while  protecting  the dwelling against intrusion of rats or other pests. The  one-way  check valve  includes  a  double-hinge flapper which is  normally closed and protects  the dwelling  against  sewer back-ups  while  facilitating the use of fish wires when cleaning the valve system.
Patent CA-2052315-A1 (CA)
Title: Cyclobutane derivatives
Inventor: NAGAI MASASHI
IPC: C07C223/04
Filed: 1991-09-26
Abstract: ABSTRACT         Cyclobutane derivatives represented by the formula (1)                (1) wherein B is a nucleic acid base derivative, R1 denotes a lower alkyl group of 1 to 6 carbon atoms, and R2 and R3 each independently denote hydrogen atom or a protect-ing group for hydroxyl, and physiologically acceptable salts thereof.  These compounds are expectedly useful as medicinal agents such as antiviral agent, carcinostatic agent and the like.
Patent CA-2055456-A1 (CA)
Title: Machine with mobile grid for the elimination from channels and similar of solid products transported by a liquid flow
Inventor: SERNAGIOTTO EMILIO
IPC: B01D33/03
Filed: 1991-03-04
Abstract: ABSTRACT OF THE DISCLOSURE            Machine (1) with a mobile grid for the elimination of solid products,  transported by a liquid flow,  from channels and similar is of a type comprising a first mobile group  (2)  and a second  fixed group  (3)  of elements in the form of  steps,  said groups  (2,  3) being enclosed between a pair (4, 4) of lateral plates connected by upper (5) and lower (5') crossbeams and the elements of the mobile group being joined together by  crossbeams  (6)  which  are  in  turn  fixed  to longitudinal  members  (7,  7')  and is  essentially characterised  in  that  the  said mobile  group is connected to suitable driving means (8-11) by a system of  arms  situated  externally  on  said whole  unit constituting said second fixed group, and the movement is transferred to said first mobile group by a series of pairs of pistons  (18,  19)  respectively situated substantially vertically and horizontally.
Patent CA-2056156-A1 (CA)
Inventor: MCKNIGHT DARWIN T
IPC: F16L37/60
Filed: 1991-11-25
Abstract: A central vacuum system wall valve spacing plate is described which includes bosses of varying sizes so as to be adaptable to a variety of spacing requirements for the components of the wall valve.
Patent CA-2057536-A1 (CA)
Inventor: DUNN JOHN J
IPC: C07K19/00
Filed: 1991-12-12
Abstract: A method is provided herein for preparing highly expressed and soluble recombinant variations of Borrelia lipoproteins such as Borrelia burgdorferi outer surface protein A (OspA). The method includes synthesizing a set of oligonucleotide primers, amplifying the template DNA utilizing the polymerase chain reaction, purifying the amplification products, cloning the amplification products into a suitable expression vector, transforming a suitable host utilizing the cloned expression vector, cultivating the transformed host for protein production and subsequently isolating and purifying the resulting protein. Also provided are soluble, recombinant variations of Borrelia burgdorferi outer surface protein A (OspA) as well as the cloned pET9 plasmid, pET9-OspA.      Transformed E. coli host BL21(DE3)/pLysS, pET9-OspA, is also disclosed.
Patent CA-2057655-A1 (CA)
Title: Radial saw arm construction
Inventor: HENNING MARK R
IPC: B27B5/20
Filed: 1991-12-13
Abstract: Abstract of the Disclosure A radial saw assembly (10) includes a base (14) and a column (22) extending vertically upward from the base.  A saw arm (24) is attachable to the column and extends horizontally outwardly therefrom.  The arm is vertically movable relative to the column and supports a cutting assembly (26) for cutting a workpiece.  The cutting assembly is horizontally movable relative to the saw arm.  The saw arm is made by a roll forming process with a minimal number of secondary operations being performed to provide openings (44a-44d, 58, 70a-70c, 74, 92, 94 100) for installing the arm on the column and other components to the arm.
Patent CA-2058854-A1 (CA)
Title: Hot/iced beverage maker and method
Inventor: MYERS TERRY L
IPC: A47J31/10
Filed: 1992-01-07
Abstract: Terry L. Myers Docket No. 0076 ABSTRACT    An ADC coffee maker of the conventional type is also utilized for making iced tea while enabling the iced tea to be retained in the coffee maker for a period of time until the carafe of the unit has been emptied.   Heat transfer from the ADC warmer. plate is isolated from the carafe during and after brewing of the tea.
Patent CA-2060798-A1 (CA)
Title: Process for the delignification of cellulosic fibre raw materials
Inventor: BRODERSEN KARL-HEINZ
IPC: D21C3/20
Filed: 1992-02-06
Abstract: SUMMARY     A process for the delignification of cellulosic fiber plant raw material for the production of pulp by means of alcohol and alkali being produced. The pulp produced has very good properties because different amounts of alcohol are being used in the impregnation stage and in the delignification stage.
Patent CA-2066433-A1 (CA)
Title: Chicken-specific immunoglobulin g-producing hybridoma
Inventor: MATSUDA HARUO
IPC: C12N5/16
Filed: 1991-07-10
Abstract: ABSTRACT OF THE DISCLOSURE      A thymidine kinase-lacking hybrid cell having an Ig-producing ability in which chicken B lymphoblast with immunized chicken spleen cell, a method of obtaining the above hybrid cell which comprises mutating chicken B lymphoblast cell, isolating a thymidine kinase-lacking cell using a culture medium containing a thymidine analog, fusing it with immunized chicken spleen cell, mutating the hybrid cell, and isolating a thymidine kinase-lacking hybrid cell using a culture medium containing a thymidine analog, a hybrid cell having an IgG-producing ability in which a chicken spleen cell immunized with an antigen is further fused with the above hybrid cell, a method of producing a chicken IgG which comprises culturing the above hybrid cell having an IgG-producing ability in a culture medium.  The antibody-producing cell of the invention can produce chicken IgG stably for a long period, and thereby it opens the way for the massproduction of chicken IgG.
Patent CA-2066897-A1 (CA)
Title: Fiber treatment agent
Inventor: MIKAMI RYUZO
IPC: C08L67/00
Filed: 1992-04-23
Abstract: A fiber treating agent which is a silicone modified polyester in which a polyester has a polyorganosiloxane grafted thereto. The grafted polyester is the reaction product of an allyl ether containing polyester and a polyorganosiloxane wherein at least one of the silicon atoms of the polyorganosiloxane has a hydrogen atom attached thereto. Preferably, the hydrogen atom is attached to one terminal end of the polyorganosiloxane. The reaction product is modified by reacting the reaction product with a polycarboxylic anhydride, and the amine salt of the modified reaction product may be formed by reacting the modified reaction product with an aminoalkylalkoxysilane. Methods of treating fibrous materials are also described.
Patent CA-2067802-A1 (CA)
Inventor: VAN DEN BERGH JOHANNES W H
IPC: E21B23/00
Filed: 1990-11-20
Abstract: 2067802 9108370 PCTABS00005 Apparatus for directing and steering the foremost part of a drillstring at earth drillings, which apparatus is provided with a piston (43) contained in a housing, and which piston under steering of the mass flow of the drilling fluid is displaceable between two or more end positions, and wherein the piston is coupled to at least one set member, which cooperates with means for steering the end of the drillstring.
Patent CA-2068408-A1 (CA)
Inventor: FETCENKO MICHAEL A
IPC: C01B3/00
Filed: 1990-11-20
Abstract: Disclosed is a reversible, electro-chemical cell (10) having a high electro-chemical activity, hydrogen storage negative electrode (12). The negative electrode is formed of a reversible, multicomponent, multiphase, electrochemical hydrogen storage alloy. The hydrogen storage alloy is capable of electrochemically charging and discharging hydrogen in alkaline aqueous media. In one preferred exemplification the hydrogen storage alloy is a member of the family of hydrogen storage alloys, derived from the V-Ti-Zr-Ni-Cr and V-Ti-Zr-Ni-Cr alloys in which the V, Ti, Zr, Ni and Cr are partially replaced by one or more modifiers, and the alloy has the composition:      V y'-yNiy-Ti x'-x Zr x Cr z)a M'b M'' cM''' dM'''e, where x' is between 1.8 and 2.2, x is between 0 and 1.5, y' is between 3.6 and 4.4, y is between 0.6 and 3.5, z is between 0.00 and 1.44, a designates that the V-Ni-Ti-Zr-Cr component, as a group is from 70 to 100 atomic percent of the alloy, b, c, d, e, ..., are the coefficients on the modifiers, and M', M", and M i are modifiers which may be individually or collectively up to 30 atomic percent of the total alloy.  The modifiers, and M', M'', M iii, and M iv are modifiers which may be individually or collectively up to 30 atomic percent of the total alloy. The modifiers, M', M'', M iii, and M iv are chosen From Al, Mn, Mo, Cu, W, Fe, Co, Si, Sn, Zn and combinations thereof.
Patent CA-2072112-A1 (CA)
Inventor: YOKOYAMA SEIICHIROU
IPC: G02F1/1335
Filed: 1991-08-30
Abstract: A black matrix (2) and a taking out electrode (3) are formed on a glass substrate (1), using a light-shielding conductive film made of a metal or the like. On this film, an insulating film (4) is formed. At the same time, a taking out electrode window (5) is formed on the portion of the insulating film (4) corresponding to the taking out electrode (3). Then, an electrode for forming a coloring matter layer (ITO electrode) 6 is formed on the insulating film (4). Then, the taking out electrode window (5) is filled with an ITO  electrode material, to electrically connect the taking out electrode (3) and the ITO electrode (6). Then the outer electrode was connected to the taking out electrode (3). The electricity was turned on the outer electrode to form a coloring matter layer (8) on the ITO electrode (6).
Patent CA-2072710-A1 (CA)
Title: Improved cleaning device
Inventor: FURCRON KENT J
IPC: A47L11/03
Filed: 1992-06-29
Abstract: An improved cleaning system of the type which applies a cleaning fluid to a surface to be cleaned and then vacuums the dirty cleaning fluid from said surface is provided. The system includes a cleaning fluid pump for delivering pressurized cleaning fluid to spray nozzles attached to either a floor nozzle ar a hand tool. Both the floor nozzle and the hand tool are connected to the suction and cleaning fluid connectors of the main cleaner unit by a one-step connection which connects both fluid and suction lines in a single motion. The hand tool, which is attached to the main unit by a hose assembly, has its own pinch valve for controlling the application of cleaning fluid to the surface to be cleaned. When the hand tool is being used the trigger which actuates the pump may be locked in the "on" position.
Patent CA-2073957-A1 (CA)
Inventor: KRUMMHEUER WOLF R
IPC: B60R21/16
Filed: 1992-07-15
Abstract: Abstract:         Industrial fabrics of controlled air permeability < 120 l/dm2 x min and a very good ageing resistance. The air permeability value does not change by more than 15 % in the course of the ageing test. This fabric is produced by  accurately  adapting  the  production  conditions  in weaving, in wet processing and in particular in hot air' treatment. The process is particularly suitable for the manufacture of air bag fabrics.            Sometimes when the figure f followed a figure AVK dic-tated "f" and sometimes "dtex". Please standardise which ever one is right.
Patent CA-2076222-A1 (CA)
Title: Pick-up for the inductive production of a measurement signal
Inventor: MEHNERT WALTER
IPC: G01D5/20
Filed: 1992-08-14
Abstract: A pick-up for the inductive production of a measurement signal reproducing the relative position of first and second bodies which are movable relative to each other includes at least one exciter coil operable with alternating current for the production of a magnetic flux, a measurement coil arrangement at which voltages from which the measurement signal is derived can be taken off, and a flux guide means of ferromagnetic material for carrying the magnetic flux produced by the excites coil on a closed measurement path in such a way that at least a part of the magnetic flux passes through the measurement coil arrangement, and at least one of the voltages which can be taken off at the measurement coil arrangement changes in dependence on the movement of one of the bodies relative to the other. To achieve a high degree of measurement accuracy and characteristic fidelity, the measurement signal is formed as a quotient of first and second intermediate signals of which at least one depends on the instantaneous position of one of the bodies relative to the other, and each of the intermediate signals involves differences of voltages which the measurement coil arrangement supplies.
Patent CA-2076827-A1 (CA)
Title: Additives for lead-free frits
Inventor: JOHNSON RONALD E
IPC: C03C8/16
Filed: 1992-08-25
Abstract: This invention is drawn to a method for eliminating the grayish discoloration which customarily develops when lead-free and cadmium-free glass frits are applied to substrates employing an organic vehicle and which are thereafter fired to fuse the frit particles into a glaze.      The grayish hue results from a carbonaceous residue left upon thermally decomposing the organic vehicle. The inventive method comprises five general elements: (a) glass frit particles of a desired composition are prepared; (b) a coating of an organic compound containing at least one sulfur oxide group as an oxidizing agent is adsorbed on the surface of the particles; (c) the coated particles are mixed with an organic vehicle; (d) that mixture is coated onto a surface of a substrate; and (e) that coated substrate is fired to fuse the frit particles into a glaze, the oxidizing agent eliminating the carbonaceous residue left upon thermal decomposition of the organic vehicle.
Patent CA-2077118-A1 (CA)
Title: Method and apparatus for using hazardous waste to form non-hazardous aggregate
Inventor: KENT JOHN M
IPC: B01D53/50
Filed: 1992-08-28
Abstract: Apparatus for converting hazardous waste into non-hazardous, non-leaching aggregate comprises means (10) for burning the hazardous waste to produce particulate solid materials, volatile gases and gaseous combustion by-products, oxidising means comprising at least one refractory-lined water-cooled, metal-walled vessel (26), means (76) for introducing the particulate solid materials, volatile gases and gaseous combustion by-products into the oxidising means (26), means (36,38) for inducing combustion in the oxidising means (26), the heat of combustion forming molten slag and non-combustible fines from non-combustible material. The slag (40) is accumulated at the bottom of the oxidising means (26). The non-combustible fines are accumulated in an accumulator (84) and introduced through conduits (102,103,105) into the molten slag to form a substantially molten mixture. An injector (117) is arranged to inject the non-combustible fines into the molten slag beneath its surface. The molten mixture is then removed into a slag box (108) and is cooled by cooling means (106) to form the non-hazardous aggregate.
Patent CA-2077977-A1 (CA)
Title: Tree stand
Inventor: CARRIERE STEVEN N
IPC: A01M31/02
Filed: 1992-09-10
Abstract: This invention relates to a removable load supporting stand for temporary attachment to a tree trunk or the like for use while hunting for example. According to the invention a stand is provided including a platform extending laterally outwardly from the tree trunk. The platform has a load supporting portion between opposing sides. Engaging means on an inward portion of the platform function to releasably engage an adjacent segment of the tree trunk. A chain at each of it's ends is secured to an opposing side of the platform. The chain releasably encompasses the tree trunk upward of the segment and defines a plane transverse an axis of the tree trunk. The chain is flexible in the plane and resistant to flexure perpendicular to the plane. Biasing means engage the chain and urge the chain in a direction of the plane to disengage the tree trunk. Preferably the chain is comprised of two parallel spaced apart rows of overlapping links transversely interconnected by pins disposed substantially normal to the plane, such that the links and pins define a longitudinal series of apertures therebetween. The biasing means preferably comprise an elongate flexible member having an inherent tendency to assume a selected configuration when unstressed.
Patent CA-2078457-A1 (CA)
Title: Bisphenol a production using acidic clay catalysts
Inventor: KNIFTON JOHN F
IPC: B01J21/16
Filed: 1992-09-17
Abstract: BISPHENOL A PRODUCTION USING ACIDIC                       CLAY CATALYSTS    (81, 140-F) ABSTRACT OF THE DISCLOSURE Disclosed is a one step method for synthesis of bisphenol A which comprises reacting phenol with acetone in the presence of a catalyst comprising an acidic montmorillonite clay having the structure:                               where M represent the interlamellar, balancing cation (normally sodium or lithium), and x, y and n are integers, wherein the acidic clay has been pretreated with an acid and optionally has deposited thereon an acid selected from the group consisting hydrogen fluoride, a fluorosulfonic acid or a mineral acid, at a temperature of from 20°C to 200°C and a pressure of from near atmospheric to about 1000 psi.          CLK:pg 81140.APP
Patent CA-2079538-A1 (CA)
Inventor: WATANABE TOSHIYA
IPC: C01B13/11
Filed: 1992-09-30
Abstract: A method of manufacturing a corona discharge device suitable for use as an ozonizer capable of producing a controlled small amount of ozone throughout a prolonged service life. A foreproduct of corona discharge device (50) is first prepared which is provided with first and second planar electrodes (54; 56) capacitively coupled, with each other by a third floating electrode (64) which is coated by a protective layer (68) of chemically-resistive electrically-insulating material. A high frequency alternating voltage having a voltage level higher than an initial minimum flashover voltage level of the foreproduct is then applied until the protective layer is aged. Aging of the protective layer is effective in lowering the initial minimum flashover voltage of the final product thus obtained as well as in reducing any fluctuation of the initial minimum flashover voltage that would otherwise occur from product to product.      Various other features are also disclosed.
Patent CA-2085496-A1 (CA)
Inventor: POIRIER GILBERT
IPC: B60Q1/44
Filed: 1992-12-16
Abstract: Circuit électronique se connectant sur le systeme électrique déjà existant d'un véhicule routier, servant de dispositif d'alerte de freinage qui, une fois activé à pour fonction de faire clignoter les feux d'avertissement à lampes incandescantes, de façon à augmenter leur intensité lumineuse, les rendants par le fait-même, plus visibles.
Patent CA-2090773-A1 (CA)
Title: Hearing aid providing an information output signal upon selection of an electronically set transmission parameter
Inventor: SAUER JOSEPH
IPC: H04R25/00
Filed: 1993-02-25
Abstract: ABSTRACT OF THE DISCLOSURE           A hearing aid to be worn behind ear of a user includes a microphone. An earphone is also provided.  The microphone and earphone are electrically connected by a signal path.  An electronic setting circuit is provided in the signal path for electrically setting at least one transmission parameter in the signal path.  The electronic setting circuit is controlled by a switch of the hearing aid. A signal output device is also provided, and is controlled by the switch.  The signal output device provides information to the user regarding the transmission parameter selected.  The signal output device outputs at least one signal that is characteristic of every electronically set transmission parameter.