baber/WOPTO huggingface dataset:
Patent CA-2097463-A1 (CA)
Title: Variable Control, Current Sensing Ballast
Inventor: LESTICIAN GUY J
IPC: H05B41/282
Filed: 1993-06-01
Abstract: The present invention is directed to an electronic ballast device for the control of gas discharge lamps. The device is comprised of a housing unit with electronic circuitry and related components. The device accepts a.c. power and rectifies it into various low d.c. voltages to power the electronic circuitry, and to one or more high d.c. voltages to supply power for the lamps. Both the low d.c. voltages and the high d.c. voltages can be supplied directly, eliminating the need to rectify a.c. power. The device switches a d.c. voltage such that a high frequency signal is generated. Because of the choice of output transformers matched to the high frequency (about 38 kHz) and the ability to change frequency slightly to achieve proper current, the device can accept various lamp sizes without modification. The ballast can also dim the lamps by increasing the frequency. The device can be remotely controlled.
Patent CA-2098554-A1 (CA)
Inventor: DALLMANN MARY B
IPC: E05B15/00
Filed: 1993-06-16
Abstract: A latch for selectively connecting a sash of a double-hung window to a slide track in a window frame is provided, including a lever including a gear at one end, a latch housing mountable to the sash, the housing including means for pivotally supporting the lever, and a locking member movable between a locked position securing the sash to the track and an unlocked position releasing the sash from the track. The locking member includes a tongue projecting from the latch housing when the tilt latch is in the locked position and lying within the latch housing when the tilt latch is in the unlocked position and a rack engaging the lever gear to move the locking member to locked and unlocked positions in response to pivoting of the lever. The lever gear includes a disk formed along one side, and the locking member includes a channel along the rack receiving the disk during pivoting of the lever. A stop is secured to the latch housing, which stop engages the locking member toprevent overpivoting of the lever arm when the lever arm is moved into the unlocked position. A detent is provided including first and second spaced grooves on one of the lower housing and the locking member and a protuberance on the other of the lower housing and the locking member. The housing includes upper and lower housings which are secured together to mount axially aligned pivots extending from opposite sides of the gear in open notches on one or the other housing members.
Patent CA-2101613-A1 (CA)
Title: Flexible polyurethane foams using chlorinated alkanes
Inventor: LEUNG SIUSUN K
IPC: C08J9/00
Filed: 1993-07-29
Abstract: FLEXIBLE POLYURETHANE FOAMS USING CHLORINATED ALKANES               Abstract of the Disclosure It has been discovered that particular flexible polyurethane foam formulations having a chlorinated alkane incorporated therein have the advantage of improved combustion resistance, but also unexpectedly the additional advantages of improved durability (dynamic fatigue), and better processing in terms of a delayed onset of gel. These results were surprisingly achieved with the use of a chlorinated alkane as the sole component to improve combustion resistance. Incorporation of as much as 34 parts of chlorinated alkane per hundred parts of polyol have been accomplished.
Patent CA-2102258-A1 (CA)
Title: Method of assembly for a north-south automatic transaxle
Inventor: MARTIN BERTHOLD
IPC: F16H57/02
Filed: 1993-11-02
Abstract: ABSTRACT OF THE DISCLOSURE           A  method  of  assembly  for  a  north-south transaxle includes the steps of forming a case with a longitudinal passageway and having an opening generally perpendicular to  the passageway.   The method  also includes forming a head portion and a shaft portion extending from the head portion and installing a front bearing about the transfer shaft and in the passageway.          The method further includes installing the transfer shaft in the passageway, installing a rear bearing about the transfer shaft and in the passageway, and retaining the front and rear bearings and transfer shaft in the passageway.
Patent CA-2105023-A1 (CA)
Title: Fluorescent lamp with improved phosphor blend
Inventor: PAPPALARDO ROMANO G
IPC: C09K11/77
Filed: 1993-08-27
Abstract: A fluorescent lamp comprises at least one layer of a four-component phosphor blend for producing visible illumination having a white color. The quad-phosphor blend comprising a first and second red-emitting phosphor component with each red-emitting phosphor component having different visible emission spectrum principally in the 590 to 630 nm wavelength range. A third blue-emitting phosphor component has an emission spectrum principally in the 430 to 490 nm wavelength range. A fourth no-rare-earth green-emitting phosphor component has an emission spectrum principally in the 500 to 570 nm wavelength range. The relative proportions of the phosphor components are such that an enhanced color rendering index is produced as compared to tri-component blends formed from only three of the phosphor components.
Patent CA-2106068-A1 (CA)
Title: Long chain antiviral compounds
Inventor: SCHWARTZ DAVID A
IPC: C07C/
Filed: 1992-03-11
Abstract: A long chain compound of formula Z-(A)n-Y, wherein each of Z  and Y is a polyheteroalkyl chain of 9 to 32 members or is a polyheterocyclic moiety having from 9 to 32 ring members, providing that one of Z and Y is a chain, and A is a linking atom or group and n is 0 or an integer from 1 to 6, is indicated as an antiviral compound and has shown activity against HIV in standard tests.
Patent CA-2109467-A1 (CA)
Title: Sorbent for sorbing liquid
Inventor: GRADEK THOMAS
IPC: C08G18/76
Filed: 1993-10-28
Abstract: ABSTRACT A process for the preparation of a polyurethane foam material having an open cell structure. The process comprises reacting an isocyanate adduct with a polyol and water to form the foam material, the reaction being carried out in the presence of a catalyst and a surfactant.
Patent CA-2110287-A1 (CA)
Title: Method and apparatus for overcoming turbo lag
Inventor: HALIMI EDWARD M
IPC: F02B37/11
Filed: 1992-05-29
Abstract: ABSTRACT OF THE DISCLOSURE      A method and apparatus for improving the efficiency of turbine assisted internal combustion engine wherein the turbine is operated by an electric motor at a speed somewhat less than its operating speed as a turbine until such time as the turbine is activated as a turbine and in which a separate electric motor means is provided to maintain the rotation of the turbine when it is not actively operating as a turbine and in which the electric motor is coupled to the turbine by one way drive means which only drive the turbine at times when it is rotating at less than full speed under turbine operation.
Patent CA-2111736-A1 (CA)
Inventor: SCHULTZ ROGER L
IPC: E21B34/16
Filed: 1993-12-17
Abstract: An  annulus  pressure  control  system  is  provided  for controlling annulus pressure in a well to send remote command signals to a downhole tool in the well.  The well has associated therewith a high pressure source and a low pressure dump zone.          The system includes at least one control valve having an inlet and an outlet with a variable flow restriction located between the inlet and the outlet.   One of the inlet and outlet is connected to the well annulus and the other of the inlet and the outlet is connected to one of the high pressure source and the low pressure dump zone.   A pressure sensor is provided for generating a pressure signal representative of annulus pressure.          A controller has  information  stored therein describing the command signal which is to be applied to the well and which includes at least one annulus pressure change.  The controller receives  the  pressure  signal  from the pressure  sensor  and controls a position of the variable flow restriction of the control valve in response to the pressure signal and in response to the stored information,  and thereby applies  the desired command signal to the well annulus.
Patent CA-2115092-A1 (CA)
Inventor: NYGAARD NOBLE A
IPC: F16L59/14
Filed: 1994-02-07
Abstract: ABSTRACT      A reusable insulation jacket for tubing elbow and valve connectors carrying extreme hot and cold materials comprises a polygonal fiberglass mat.  The mat is stitched to form a cavity as to completely receive the tubing connector and to overlap itself whereat complimentary releasable fastening means securely hold the mat in place to insulate the tubing connector from fire and to prevent an individual from otherwise being burned from contacting the connector.
Patent CA-2116129-A1 (CA)
Title: Improvements in and relating to gaskets
Inventor: ALLEN KURT
IPC: F16J15/12
Filed: 1992-09-29
Abstract: A spiral wound gasket comprises an annulus constituted by a plurality of superposed turns (12, 13) of a profiled metal strip wound upon itself to form a spiral and, interposed between at least some of said superposed turns, a number of turns of a relatively soft sealant material (11) in strip form, the width of said material strip (12, 13) being selected so that prior to use the wound metal spiral is essentially flush with the surface of an associated guide ring (16) and the width of the strip of relatively soft sealant material (11) be-ing selected so that prior to use, it projects a significant distance on both sides of the gasket from said superposed metal turns (12, 13) axially of said annu-lus. The preferred relatively soft sealant material (11) is exfoliated graphite foil or a fluorocarbon resin; unsintered PTFE being particularly preferred. The sealant material (11) preferably projects from the metal spiral (12, 13) to define an overall gasket thickness on the order of 25 to 40 percent greater than that of the guide ring (16).
Patent CA-2118227-A1 (CA)
Title: Coordinated coding for digital transmission
Inventor: KERPEZ KENNETH JAMES
IPC: H04L1/02
Filed: 1993-03-16
Abstract: Methodology, and associated circuitry, for encoding (e.g., 200) and decoding (e.g., 900) an incoming data stream (201) utilize a coordinated code constellation (e.g., Fig. 3) that effects robust signal detection in the presence of channel interference. The encoder (220) partitions the incoming data stream into contiguous data segments in proportion to the number of levels for a given coordinated code. Each data segment is mapped with reference to the coordinated code to signal levels suitable for transmission over a plurality of channels (e.g., 222, 223). The decoder measures (e.g., 900) the received signals on the channels and estimates noise statistics for the channels.  A metric relationship engendered by the coordinated code is evaluated with reference to the received signals, estimates to the received signals, and the noise statistics. An output data stream is then generated based on the evaluation of the metric.
Patent CA-2119520-A1 (CA)
Title: Sintered spherical plastic bead prepack screen aggregate
Inventor: ARTERBURY BRYANT A
IPC: B01D39/16
Filed: 1994-03-21
Abstract: ABSTRACT OF THE DISCLOSURE A prepack well screen assembly for separating particulate material from formation fluid has inner and outer screens concentrically mounted in radially spaced relation around a perforated mandrel, thereby defining a prepack annulus in which a plurality of spherical plastic members are disposed. The concentric inner screen includes longitudinally extending rib wires spaced circumferentially around the mandrel, and a screen wire wrapped externally about the rib wires in a longitudinally spaced pattern to define spaced screen apertures for conducting formation fluids through the inner screen. The outer screen is a cylindrical fluid-porous, particulate-restricting member which is radially spaced from the inner screen to form the prepack annulus. The particulate-restricting member includes rib wires which are spaced circumferentially around the inner screen within the prepack annulus, and an outer screen wire wrapped externally about the rib wires to define the annulus. The outer screen wire is wrapped about the rib wires in a longitudinally spaced pattern to delineate spaced screen apertures for conducting formation fluids through the outer screen. The spherical plastic members are disposed within the prepack annulus and heated until the spherical plastic members become tacky and bond to each other to form a sintered, homogeneous mass.
Patent CA-2120748-A1 (CA)
Title: Peroral drug delivery system
Inventor: URTTI ARTO O
IPC: A61K9/16
Filed: 1992-10-15
Abstract: This invention describes a device for peroral administration of a therapeutic agent which is capable of existing in an un-ionized therapeutically active form. The device comprises a reservoir comprising the therapeutic agent in ionized form, which reservoir has a wall permeable to un-ionized material and impermeable to ionized material; and a solid material which upon uptake of water is converted to a buffer; the solid material having, on uptake of water, a pH which determines the rate of permeation of the therapeutic agent in un-ionized form through the reservoir wall. The device enables the release of the therapeutic agent to be controlled by the pH of the buffer and, if desired, the composition of the reservoir walls. The composition of the surrounding aqueous medium does not affect the rate of release.
Patent CA-2120924-A1 (CA)
Title: Method and apparatus for sampling air contaminants
Inventor: BURTON ROBERT M
IPC: G01N1/22
Filed: 1992-10-07
Abstract: A sampling apparatus (10) for separating and collecting contaminants contained in an air sample has a first particle separator (18), a second particle separator (20), a coarse filter (22), a denuder (24), a fine filter (26), a semi-volatile organic compound collector (28), a flow rate control device (16), and a vacuum pump (14). The apparatus (10) separates the coarse, intermediate, and fine particles, acid gases, basic gases, volatile organic compounds, and semi-volatile organic compounds at a high flow rate.
Patent CA-2121319-A1 (CA)
Title: Wind powered toy wheel
Inventor: ZEMAN LUDVIK
IPC: A63H33/40
Filed: 1994-04-14
Abstract: ABSTRACT     A toy wheel or disk is disclosed which is adapted to be propelled along by air movement. The wheel or disk has an outer edge (2) for rolling over a surface and opposite faces from which a plurality of flanges (3) extend outwardly to each side. The flanges are shaped to catch air draughts so that the wheel or disk may be propelled in rolling motion on its outer edge by wind force acting on the flanges.
Patent CA-2121792-A1 (CA)
Title: An improved cleaning composition which includes a sulfonated alkylated aromatic surfactant and a nonionic surfactant
Inventor: ROSE GENE D
IPC: C11D1/65
Filed: 1993-08-27
Abstract: This invention is directed to cleaning compositions and methods useful in removing soils, particularly those of oil and grease, from surfaces particularly those of fabric. The composition includes a sulfonated alkylated aromatic surfactant and a nonionic surfactant. The class of sulfonated alkylated aromatic surfactant analogs used in the cleaning composition of the present invention will comprise at least one benzene ring wherein additional benzene rings can be attached in various forms, for example polycyclic aromatic(s) such as naphthalene, anthracene and the like, or via an ether linkage or other linking atoms. The sulfonated alkylated aromatic (SAA) will include at least one sulfonate group; wherein for aromatics consisting of more than one benzene ring, disulfonate is present in less than 50 percent of the total sulfonated alkylated aromatic. The SAA will also contain at least one alkyl group attached to the aromatic moiety of from about C18 up to about C30.
Patent CA-2124361-A1 (CA)
Title: Combination Direct and Indirect Closed Circuit Evaporative Heat Exchanger
Inventor: CARTER THOMAS P
IPC: F28F25/08
Filed: 1994-05-26
Abstract: A heat exchange apparatus is provided with an indirect evaporative heat exchange section and a direct evaporative heat exchange section.  A uniform temperature evaporative liquid is downwardly sprayed into the indirect section to indirectly exchange sensible heat with a hot fluid stream flowing within a series of enclosed circuits which comprise the indirect evaporative heat exchange section.  After the evaporative fluid descends through the entire indirect heat exchange section and absorbs heat, it is distributed across fill media within the direct evaporative heat exchange section for cooling.  Separate streams of ambient cooling air are simultaneously drawn into each of the heat exchange sections to evaporatively cool the evaporative liquid flowing within each section.  The water cooled in the direct heat exchange section is then collected in a sump where it is allowed to mix and resultantly become uniform in temperature before being redistributed.  The initial uniform temperature of the cooling water is operationally the most controlling factor in maximizing the uniformity and performance of the indirect heat exchange section and the tower as a whole.          The indirect heat exchange section is constructed from a series of spaced circuits having a continuous serpentines shape where the internal fluid to be cooled flows upwardly at a uniform rate and temperature from circuit to circuit.  As the water descends, it indirectly exchanges sensible heat with the fluid uniformly from circuit to circuit along the vertical and horizontal heights of the indirect heat exchange section.  An additional gain in the uniformity of circuit to circuit performance and heat exchanged is realized when the cooling air stream passing through the indirect heat exchange section is parallel or concurrent with the cooling water flow.  The apparatus can be used as a fluid cooler, an evaporative condenser, or as a wet-air cooler.
Patent CA-2127192-A1 (CA)
Inventor: HUSSEY ALAN B
IPC: H01L21/822
Filed: 1994-06-30
Abstract: An improved ATE and methods are provided by forming and comparing pattern bursts digitally in gallium arsenide IC's.      A desired burst waveform at the DUT terminal is facilitated by setting into timing generators between bursts in effect a plurality of period waveforms constituting a palette from which by successive choice the DUT-terminal driver and comparator waveforms may be built up, each period driver waveform including a predetermined number (including zero) of rising or falling edges, any particular such edge in any particular period driver waveform being provided by the timing generators and each period comparator waveforms including voltage levels to be compared and edges provided through the timing generators, the timing generators being settable only between bursts, selection of desired palette waveforms being provided for each period by a pattern memory.
Patent CA-2127513-A1 (CA)
Title: Chop/table saw arrangement
Inventor: GARUGLIERI ANDREA
IPC: B23D45/00
Filed: 1994-07-06
Abstract: A circular saw assembly comprises a frame and a table mounted in the frame that is movable between a chop saw and a table saw position in which the depth of the cut may be adjusted. The assembly has a parallelogram never rotatable about a pivot member for permitting the performance of plunge cuts on workpieces when the table is in chop saw position. A rack extends from the end of the parallelogram lever opposite the upper guard so that, when the assembly is converted to table saw position, the rack engages an adjustable worm gear for adjusting cut depth. A spring biasses the saw assembly away from the table when in chop saw position. In table saw position, the spring is releasable by an intermediate toggle lever so that the worn gear may be adjusted without the user having to work against the spring pressure when setting cut depth.
Patent CA-2130237-A1 (CA)
Title: Resequencing system
Inventor: VAN HAUWERMEIREN LUC F
IPC: H04Q11/04
Filed: 1994-08-16
Abstract: ABSTRACT                     RESEQUENCING SYSTEM           A resequencing system is used for resequencing the cells of a cell stream having different input and output peak cell  rates  and  which  is  conveyed  through  the  series connection of : - an input circuit (IM1) controlled by a first time stamp generator (TSG1) and allocating to each cell of the cell stream an adapted time stamp value equal to the sum of a time stamp value then generated by the first time stamp generator (TSG1)  and  a  variable virtual  delay,  and  such  that consecutive  adapted  time  stamp  values  allocated  to immediately consecutive cells differ by a time delay equal to at least the inverse of the output peak cell rate; - a cell switching network (SN); and - a resequencing unit (RSU1) associated to a second time stamp generator  (TSG2)  generating successive second time stamp values at a rate at least equal to the output peak cell rate, and resequencing the cells by subjecting them to an additional variable time delay which is such that the total delay of the cells is equal to the sum of the virtual delay allocated thereto and a predetermined constant value.
Patent CA-2131140-A1 (CA)
Title: Waste collection device
Inventor: GALEAZZI GIANCARLO
IPC: B65F1/14
Filed: 1994-08-30
Abstract: ABSTRACT OF THE DISCLOSURE      Waste  collection device that includes a  pit  provided with  a  lid  that has waste insertion pillars  and  with  a lifting  unit  that is suitable to move at least  one  waste container;   the  device  is  characterized  in   that   the monolithic  lid  is pivoted to the edge of the  pit  and  is kinematically connected to the lifting unit so as to perform the  opening  and closing motions  respectively  during  the ascending and descending movements of the lifting unit.
Patent CA-2134046-A1 (CA)
Inventor: NAKAJIMA HISASHI
IPC: B29C49/64
Filed: 1994-10-21
Abstract: A novel method enabling stretch blow molding in a temperature range preferable for polyethylene, capable of releasing at a surface temperature suited to both releasing of a preform and subsequent stretch blow molding, by disconnecting the core die and the preform in advance by the use of pressure of gas.     This is for injection molding a predetermined preform by filling an injection mold with molten polyethylene, releasing the preform from the cavity die and core die of the injection mold while a mouth portion of the preform is held by the lip die, and transferring the preform into a blow die to stretch blow mold into a hollow molded product of thin wall. Gas is forcedly entered into the boundary of the core die and the preform, before releasing the preform from the injection mold, to isolate the inside wall of the preform from the core die. Releasing is effected while the inside of the preform is not completely cooled and is still at high temperature, and in a temperature range in which the surface temperature of the preform right after releasing is 80 to 90 deg. C. The step of stretch blow molding is performed within the time interval before the surface temperature of the preform which is elevated by the internal heat of the preform reaches 120 deg. C.
Patent CA-2135510-A1 (CA)
Inventor: LECONTE CHRISTIAN
IPC: C21D1/40
Filed: 1994-11-09
Abstract: A conductor roll for use in the annealing of wire, such as copper wire, comprising a conductive substrate, such as copper, coated with a wear resistant layer of tungsten or tungsten based alloy in which the surface of the wear resistant layer has a roughness of at least 2 microns Ra.