baber/WOPTO huggingface dataset:
Patent CA-2047258-A1 (CA)
Title: Removal of contaminants and recovery of metals from waste solution
Inventor: DEVOE IRVING W
IPC: C02F1/42
Filed: 1991-07-17
Abstract: ABSTRACT A method for removal of waste material from waste liquids comprising:     introducing a waste liquid containing the waste material into a first of a plurality of liquid treatment containers;     contacting the waste liquid in the first liquid treatment container with a first quantity of waste recovery medium for removing the waste material from the liquid for a period of time sufficient to achieve a desired efficiency of recovery of the waste material;     cycling the waste liquid from the first liquid treatment container sequentially through each of the plurality of liquid treatment containers to a final liquid treatment container while contacting  the waste liquid in each of the liquid treatment containers with additional quantities of the medium for periods of time sufficient to achieve the desired efficiency of recovery in each of the liquid treatment containers;     cycling at least a portion of the medium from the final liquid treatment container through the plurality of liquid treatment containers to the first liquid treatment container in a direction countercurrent to flow of the liquid as to maintain essentially constant medium concentration in each liquid treatment container;     transferring at least a portion of the medium from the first liquid treatment contained into a medium recycling means;     removing at least a portion of the waste material from the medium in the media recycling means so as to at least partially regenerate the medium; and reintroducing the at least partially regenerated medium into the final liquid treatment container.
Patent CA-2048579-A1 (CA)
Title: Magnetic disk cartridge
Inventor: SAITO TADASHI
IPC: G11B23/50
Filed: 1991-08-07
Abstract: Abstract A magnetic disk cartridge retains a rotational magnetic disk in a case through liners, which contact the associated surfaces of the disk and each have multiple long protrusions formed almost uniformly and almost in parallel to one another on the whole surface on the disk side.  As the magnetic disk rotates, the angle of the disk surface contacting the long protrusions can gradually change, thus ensuring removal of dust from the disk.  In addition, this structure can reduce the frictional resistance between the liner's surface and magnetic disk, which contributes to faster rotation of the disk.
Patent CA-2052074-A1 (CA)
Title: Integrated optics gyroscope sensor
Inventor: VALI VICTOR
IPC: G01C19/72
Filed: 1991-09-23
Abstract: INTEGRATED OPTICS GYROSCOPE SENSOR              ABSTRACT An integrated optical gyro sensor comprising a Sagnac interferometer, having a light source, a plurality of optical waveguides and an optical coupling arrangement inte-grated onto a substrate. The substrate has multiple light waveguides and detectors inte-grated therein. The primary waveguide has a roughly spiral shape with its respective ends disposed approximately 90 degrees to each other. The optical coupling arrange-ment comprises four beamsplitters and a reflector, which couple light signals to the primary waveguide and to two light detectors. The relative phase shift of the counter-propagating light signals in the primary waveguide is detected. The phase shift mea-surement is proportional to the physical inertial rotation of the sensor.
Patent CA-2053693-A1 (CA)
Title: Address protection circuit
Inventor: BRANT WILLIAM A
IPC: G06F21/62
Filed: 1991-10-18
Abstract: An Address Protection Circuit (APC) for cross-checking the integrity of requests to read or write an addressable system memory in a fault-tolerant computer system. in the check mode, the APC checks each address and the source identification code of each memory access request from an address source. The source identication and current bus address are compared to a range of addresses stored in the APC. If the current bus address is within an "authorized" range, access to that range of locations in the memory is allowed to the address source. If a current memory access request is not authorized, the APC asserts an error signal, which may be used to transfer control to a redundant subsys-tem. The APC contains a content-addressable memory element that can be initialized by the subsystem processor with address ranges and type of access allowed for each source. In the setup mode, the APC is first addressed to switch the APC from its check mode to its setup mode. Thereafter, a single value in the APC tables can be changed by the processor. The APC then automatically reverts to its check mode.
Patent CA-2054902-A1 (CA)
Inventor: HOLZWARTH HENRY A
IPC: A61B17/06
Filed: 1991-11-04
Abstract: A suture package is disclosed which is formed of a plurality of panels foldably connected to each other and arranged to fold upon each other to form a suture compartment between pairs of adjacent panels. A generally planar insert member includes portions cut out and lifted from the plane of the insert, respective pluralities of the cut portions being dimensioned and positioned to engage respective portions of a plurality of suture needles positioned thereon to retain the needles in respective fixed spaced positions within the package such that the needles are positioned in one needle compartment and individual flexible suture portions connected to the needles are respectively positioned in individual compartments formed by the remaining adjacent folded panels. In one embodiment portions of certain panels are cut away to reduce the girth of the folded package when loaded. Such portions may either be circular cut-outs or may be provided by dimensioning the length of certain panels less than the others. Apertures are preferably provided to provide access means for packing fluids into the package.
Patent CA-2055207-A1 (CA)
Title: Processing of carbon steel furnace dusts
Inventor: BARRETT EVERETT CLARK
IPC: C22B3/20
Filed: 1991-11-08
Abstract: In a process for the hydrometallurgical treatment of electric arc furnace dusts which includes an acetic acid leach, the acetic acid solution used to perform the leach  is made strong enough to dissolve heavy metal residues in the dusts, the iron-containing residues of which are recycled to a steel producing furnace.  Zinc and other heavy metals are precipitated from hot acetic acid solution  as  useful  products by  the  use  of hydrogen sulphide.  Calcium is then precipitated from the acetic acid solution as a clean gypsum using a deficiency of sulphuric acid, thus avoiding leaving sulphate ions in solution in sufficient concentration to interact with the dust and form sulphates in the iron containing residues when the acetic acid is recycled to the leaching step.
Patent CA-2055775-A1 (CA)
Inventor: FOA MARCO
IPC: C08K5/524
Filed: 1991-11-18
Abstract: ABSTRACT            New organic phosphites of a specific formula are used as stabilizers for polymers and other organic materials.
Patent CA-2055837-A1 (CA)
Title: Wet section for a twin wire papermaking machine
Inventor: BUBIK ALFRED
IPC: D21F9/00
Filed: 1991-11-19
Abstract: ABSTRACT OF THE DISCLOSURE     The wet section of a twin wire papermaking machine is provided with an open forming roll at the lower wire and with the combination of a suction box at the lower wire and a vacuum suction box at the upper wire.  Furthermore, by selecting the elevational position or level of the individual wire sections there can be obtained particularly advantageous conditions for the operation of the papermaking machine throughout a wide field of application, especially heavy types of paper at relatively low operating velocities of the papermaking machine.  Gap-former and hybrid-former  constructions  of  the  papermaking machine  are possible.
Patent CA-2056216-A1 (CA)
Title: Packet data flow control for an isdn d-channel
Inventor: CHI HO CHU MATTHEW
IPC: H04L12/56
Filed: 1991-11-26
Abstract: A plurality of terminals, each responsive to RR (receive ready) and RNR (receivenot ready) messages for respectively enabling and inhibiting the transmission of data packets by the terminal, are coupled to a packet handler via a multiplexed path. In order to limit each terminal to an allocated bandwidth, for each terminal a number is stored representing a number of data bytes which the respective terminal is permitted to transmit within a timed period at its allocated bandwidth, and in each timed period a counter counts down from this number in accordance with the number of data bytes transmitted by the terminal. An RNR message is transmitted to the terminal if and when a zero count is reached, and following such an RNR message an RR message is transmitted to the terminal to enable it for the next time period. The arrangement provides a relatively instantaneous limiting of the bandwidth of each terminal to its allocated bandwidth, and can be applied independently for each direction of transmission.
Patent CA-2057419-A1 (CA)
Inventor: BLASNIK WILLIAM
IPC: A61M13/00
Filed: 1991-12-11
Abstract: Movement of the cover relative to the housing spring loads and latches a piston carrier in the armed position. Inhalation causes a passageway door to open, releasing the carrier latch to permit the carrier to be moved toward the canister by the spring.  The piston moves with the carrier, due to a fluid connection therebetween, applying a compression force on the spring loaded canister valve stem and causing it to dispense the inhalant through an opening in the piston which functions as a nozzle.  After the inhalant is dispensed, the carrier fluid vents permitting the spring of the canister valve stem to move the piston relative to the carrier, and thus release the force applied to the valve stem by the piston.  The sensitivity of the toggle linkage between the door and the carrier latch is adjustable.  The linkage can be manually tripped for testing purposes.
Patent CA-2059155-A1 (CA)
Title: Railroad crossing warning system
Inventor: REED FRED
IPC: B61L29/24
Filed: 1992-01-10
Abstract: RAILROAD CROSSING WARNING SYSTEM          ABSTRACT OF THE DISCLOSURE               A railroad crossing warning system for use at an uncontrolled  railcrossing  intersection  between  a  road  for vehicles  and  a  rail  line  for  trains  comprises  a  first reflective object positioned at the road side on the side of the  track  adjacent  to  an  oncoming  vehicle  and  a  second reflective object positioned at  the  roadside on the opposed side  of  the track  relative  to  the  oncoming  vehicle.    The objects are positioned along two separate sight lines so as to appear as separate distinct objects as the vehicle approaches.          In the presence of a train one of the objects is obscured and the driver is educated to know that upon viewing only a single such  reflective object when approaching a rail crossing,  the second object is obscured most probably by the presence of a train not yet visible on the crossing.
Patent CA-2061957-A1 (CA)
Title: Digital circuit interrupter with an improved sampling algorithm
Inventor: CASSIDY ALICE E
IPC: H02H3/00
Filed: 1992-02-27
Abstract: DIGITAL CIRCUIT INTERRUPTER WITH AN IMPROVED SAMPLING ALGORITHM                 ABSTRACT OF THE DISCLOSURE    A digital circuit interrupter having a keypad and display for entering and viewing the trip parameters utilizes a sampling al-gorithm to periodically sample the current within a protected circuit.  The sampling algorithm allows a real time constant sampling interval independent of wide variations in the power system frequency.
Patent CA-2062887-A1 (CA)
Title: Heat exchanger system
Inventor: MILLER FRANKLIN E
IPC: F02C9/18
Filed: 1992-03-12
Abstract: ABSTRACT An air/fluid heat exchanger is in direct fluid connection with the compressor surge bypass air controlled by the booster bypass door system located between the booster and core engine compressor stages of a fan-jet gas turbine engine in order to eliminate a separate heat exchanger inlet control valve thereby reducing the operating complexity and number of parts of the engine as well as reducing the size of the heat exchanger core so as to be able to locate the heat exchanger within the engine.
Patent CA-2063227-A1 (CA)
Inventor: MORITA YUTAKA
IPC: H01Q1/24
Filed: 1992-03-17
Abstract: An antenna device having a straight shaft extending from a mount member to be attached to an electronic device, and a cylinder member which comprises an antenna member and slidably fitted around the shaft in intimate contact therewith to define a generally airtight chamber by the outer end of the shaft and the inner surface of the cylinder member.  The cylinder member is projectable outward along with the antenna member by an urging force when released from a lock member, the cylinder member being so projectable at a reduced speed by giving a negative pressure to the chamber.
Patent CA-2064094-A1 (CA)
Inventor: MEEKS CRAWFORD R
IPC: F16C39/06
Filed: 1990-05-25
Abstract: A magnetic bearing struc-ture is provided for supporting a rotatable member in suspended position relative to a stationary member (10) including axially spaced apart rings (22) associated with the stationary member (10), which hold a plurality of elec-tromagnetic coils (26) circumfer-entially about and radially spaced from a rotatable shaft (14). At least one cylindrically shaped permanant magnet (18) surrounds a portion of the shaft (14) and is positioned generally between the pair of arcuate rings (22). The permanent magnet (18) is axially polarized and is linked magneti-cally to the arcuate rings (22). All magnetic flux generated by the electromagnetic  coils (26) and the permanent magnet (18) is directed radially through only a pair of air gaps (16) between the shaft and the rings. Position sensors (36, 38), along with a servo control circuit (40), detect and compensate for any radial displacement of the shaft (14) to maintain it in a metastable position relative to the stationary member (10).
Patent CA-2064575-A1 (CA)
Title: Pharmaceutical compositions containing aromatic polymers and therapeutic methods using the same
Inventor: BEN-SASSON SHMUEL
IPC: A61K31/765
Filed: 1990-08-14
Abstract: The present invention describes novel pharmaceutical compositions containing polyaromatic compounds having properties which mimic pharmacological activities of glycosaminoglycans which effect the distribution in tissue of biologically active peptides and proteins normally bound to glycosaminoglycans and to methods of therapy using said pharmaceutical compositions.
Patent CA-2065692-A1 (CA)
Inventor: WILDER WILLIAM D
IPC: A47C9/02
Filed: 1992-04-09
Abstract: A standing aid for use with a checkout counter to assist an operator of the checkout counter while standing above a floor, comprising a base frame adapted to be mounted above the floor adjacent the checkout counter, a buttocks cushion adapted for engaging the buttocks of the operator of the checkout counter while standing, and support means mounted to the base frame for movably supporting the buttocks cushion above the floor in a plurality of vertical positions and in a plurality of lateral positions, the buttocks cushion being pivotally mounted to the support means.
Patent CA-2070774-A1 (CA)
Title: Method of processing spices and other aromatic edible vegetable matter
Inventor: BUTCHERS DAVID J
IPC: A23L27/00
Filed: 1991-04-26
Abstract: A method of preparing an aromatic condiment composition, comprises passing a mixture containing aromatic edible vegetable matter e.g. spices or herbs and at least 2 % by weight, relative to the amount of aromatic edible vegetable matter, of an edible extender substance through an extruder at a temperature and degree of shear sufficiently high to achieve commercial sterility.
Patent CA-2071901-A1 (CA)
Title: Portable electronic device to establish public loyalty to a media or similar
Inventor: AUDEBERT YVES
IPC: G06Q30/02
Filed: 1990-10-18
Abstract: The device (1) validates partic. in a promotion which requires gathering of coded data from a mass communication medium. The device has an optical interface (R) or key pad (8) to allow entry of transmitted data. A processor (4), running a stored (12) program, validates partic. based on numbers entered. A memory (12), managed by the processor, stores processed numbers for a pre-determined period of time. A display (6) shows an output code derived from the entered numbers.
Patent CA-2072997-A1 (CA)
Title: Device and method for absorbing impact energy
Inventor: ROSENZWEIG NACHUM
IPC: F16F7/12
Filed: 1990-11-06
Abstract: ABSTRACT OF THE DISCLOSURE      An energy absorption device comprising; an elongate body (103) arranged along a longitudinal axis to receive an axial impact force at a first end thereof; apparatus arranged adjacent a second end of the body for deformation thereof; die apparatus (104) for producing deformation of the body and ring fixed to the die apparatus (104) and surrounding the body.  Also disclosed is a repeatable energy absorption device including crushing apparatus having threaded apparatus on its outside surface.  Upon receipt of the axial impact, the first end of the body moves outside surface.  Upon receipt of the axial impact, the first end of the body moves from a first position away from the crushing apparatus to a second position closer to the crushing apparatus.  The device additionally includes threaded sleeve apparatus (106) having a first end for supporting the crushing apparatus and for moving the crushing apparatus toward the first end after the axial impact to return the first end of the body to the first position.
Patent CA-2073807-A1 (CA)
Inventor: JUBRAN NUSRALLAH
IPC: B41M5/132
Filed: 1992-07-14
Abstract: ABSTRACT OF THE DISCLOSURE      This invention relates to improved imaging systems based on the formation of yellow colored coordination compounds of transition metals with certain ligands. The formation of colored coordination compounds can be employed to generate images and is important in the manufacture anqueous pressure sensitive transfer papers for preparing carbonless copies.  In particular, this invention relates to certain ethanediimidic acid bis[(arylalkylidene)hydrazide] compounds, and particularly to certain ethanedilmidic acid bis[(o-hydroxyarylalkylidene)hydrazide) compounds, to their coordination compounds with certain transition metals, and to their use in pressure sensitive carbonless copy paper systems.  These compounds have been found to provide excellent yellow colors when used in pressure sensitive carbonless copy-papers wherein the image is formed by the reaction of a color-forming compound with transition metal salts such as those of nickel, cobalt, iron, copper, and similar materials. These yellow color-formers have the advantage of greater solubility in encapsulation solvents and lower volatility than previously used yellow color-formers.     The invention also concerns the admixture of these certain color-formers with N-(monosubstituted)-dithiooxamides and/or N,N'-(disubstituted)dithiooxamides to form images of various colors and preferably black images during the application of appropriate pressure to pressure sensitive imaging constructions such at carbonless paper constructions.            MAL/wp/FN44790.FOR
Patent CA-2074471-A1 (CA)
Inventor: TAKEMOTO TAKATOSHI
IPC: A63F7/02
Filed: 1991-11-25
Abstract: The sensor has a sensing matrix (20) comprising sensing units for sensing objects in the form of a matrix, driving means (40, 50, 63) for receiving the signals representing the states of the sensing units, and sensing means (30) for sensing the existence position of the object on the sensing matrix (20) on the basis of the signals received by the driving means. The sensing means (30) is provided with an offsetting means (30a) for storing the values of the received signal as an offset value for every sensing unit while updating successively, a computing means (30b) for computing the difference between the offset value before updating and the newly received signal value for every respective sensing unit, and a comparing means (30c) for judging the existence of the object by comparing the difference between both of the values with a preset value. <IMAGE>
Patent CA-2075308-A1 (CA)
Title: Pulp and paper mill wastewater color removal
Inventor: SIEFERT KRISTINE S
IPC: C02F1/52
Filed: 1992-08-05
Abstract: Abstract of the Invention The invention provides a method for decolorizing an effluent stream from a pulp mill plant comprising the step of adding an effective amount of a decolorizing composition including a ferrous sulfate and a water-soluble cationic amine polymer.
Patent CA-2075756-A1 (CA)
Inventor: TODA YOSHIFUMI
IPC: H03J7/06
Filed: 1992-08-11
Abstract: A  frequency converter circuit which includes a first frequency conversion unit which mixes a received signal and a first local oscillation signal to produce a first intermediate frequency signal and a second frequency conversion unit which mixes the first intermediate frequency signal and a second local oscillation signal to produce a second intermediate frequency signal. Here, the first frequency deviation included in the first local oscillation signal and the second frequency deviation included in the second local oscillation signal are combined and applied to the reference oscillation unit. The oscillation frequency of the reference oscillation unit is subjected to feedback control so that the combined frequency deviation becomes zero. This feedback is formed so that a first and second local oscillation signals are produced based on reference signals obtained by dividing a reference signal having the oscillation frequency by a first dividing ratio and a second dividing ratio.
Patent CA-2075838-A1 (CA)
Inventor: HOWE PHILIP M
IPC: A42B1/06
Filed: 1991-02-04
Abstract: An article of clothing is disclosed which is made from two outer layers of a knit fabric material and an intermediate layer of flexible windbreak material between the two knit layers. The windbreak material is a woven material which effectively blocks the flow of air and at least some of the threads from which it is woven are threads having an elastic core and staple fibers covering the core, such as spandex. Various articles of apparel may be manufactured from the fabric material, including gloves, hats, socks, suits, and scarves. Also disclosed is a headband that has fasteners for removably attaching to a hat and a narrow portion at the forehead and a wider portion at the ears and back of neck so as to cover the adjacent portions of a wearer's body.
Patent CA-2076933-A1 (CA)
Title: Processor and method of driving the same
Inventor: YAMASHINA MASAKAZU
IPC: G06F1/12
Filed: 1992-08-26
Abstract: ABSTRACT OF THE DISCLOSURE    Data are received from and send to the exterior of a processor  in the same time as the cycle time required  for reading out  data of  an  external  storage  circuit.  and  the circuits involved in the processor is controlled at a speed several times as large as that time, by the function that the input and output operation of the signals  from and to  the external storage circuit is carried out via an input/output circuit operating in synchronism with a clock signal of low frequency which is entered from the exterior to the synchro-nizing circuit,  and  the  signal  is  passed from and  to  the exterior of the processor at a low frequency,  while  it is passed therebetween at a high speed in synchronism with the multiplied synchronizing signal within the processor.  There-fore,  the passage of data to and from the external storage circuit can be carried out in a single cycle,  resulting in small power consumption without degrading the performance of the processor.