baber/WOPTO huggingface dataset:
Patent CA-2030296-A1 (CA)
Title: Pump holder
Inventor: RODRIGUES JOSE
IPC: B67D7/50
Filed: 1990-11-20
Abstract: ABSTRACT    The product is used to hold open the lever of the fuel pump handle at an auto service station.  It is a small plastic gasoline resistant device which is inserted into the pump lever, perpendicular to the nozzle that inserts into the fuel tank.  The device holds the fuel pump lever at the persons desired flow position.  The device is composed of two triangular shaped wedges, joined together by a dove tail joint.  Sliding the wedges together, raises their height, thus lifting the fuel lever to any flow postion desired.
Patent CA-2031180-A1 (CA)
Title: Solid state telephone line circuit
Inventor: PATEL LALIT O
IPC: H04M19/00
Filed: 1990-11-29
Abstract: A SOLID STATE TELEPHONE LINE CIRCUIT                      ABSTRACT A solid state telephone line circuit is disclosed which is connected via a subscriber loop to a subscriber station and via a PCM bus to a central office switching system.  The solid state telephone line circuit of the present invention includes an interface circuit, having a voltage to current converter connected to the subscriber loop.  The voltage to current converter converts feed voltage from a central office battery to loop feed current on the subscriber loop.  A differential amplifier circuit connected to a sensing network, develops an output voltage that is proportional to the voltage dropped across the subscriber loop and sensed by the sensing network.  A control circuit having a loop current shaping circuit is connected to the differential amplifier circuit.  The loop current shaping circuit receives the differential amplifier circuit voltage and applies to the current converter a control voltage which operates the voltage to current converter to apply feed current to the subscriber loop, that is proportional to loop resistance.  A PCM conversion circuit is also included that is connected to the PCM bus.  The PCM conversion circuit converts PCM encoded speech signals received on the PCM bus, into analog speech signals for transmission to the subscriber station and alternatively, converts analog speech signals received from the subscriber station to PCM encoded speech signal for transmission on the PCM bus.  A receive voice path includes a receive coupling network connecting the PCM conversion circuit to a summing amplifier on the interface circuit.  The output of the summing amplifier is fed to the voltage to current converter were the receive analog voice signals are superimposed on the feed current of the subscriber loop.  In the transmit voice path, analog speech signals from the subscriber station, appear as differential speech signals on the subscriber loop.  The analog speech signals are picked up by the sensing network and fed to the differential amplifier circuit were the differential amplifier circuit converts the differential speech signals into single ended analog speech signals.  The analog speech signals are coupled to an amplifier circuit on the control circuit.  The amplified analog speech signals are then routed to the PCM conversion circuit, converted to PCM encoded speech signals and transmitted to the PCM bus.
Patent CA-2031636-A1 (CA)
Title: Method of producing cmos transistor
Inventor: AOKI KENJI
IPC: H01L21/8238
Filed: 1990-12-06
Abstract: ABSTRACT OF THE DISCLOSURE     The method of producing a CMOS transistor device.  A pair of device regions are formed and separated relation from each other by a field oxide film on a pair of corresponding well regions formed in a semiconductor substrate.  A gate insulating film and a gate electrode are sequentially formed on each of the device regions. The gate insulating film is removed through a mask of the patterned gate electrode to expose a silicon active surface at least in one of the device regions.  A diborane gas containing P type boron impurity       is applied to the silicon active surface to form thereon a boron adsorption film.  N type arsenic impurity      is doped into the other device region by ion implantation to form N type source and drain regions while masking the one device region.  The boron is diffused from the adsorption film into the one device region to form P type    source and drain regions by annealing of the substrate.
Patent CA-2035417-A1 (CA)
Title: Strand braking apparatus
Inventor: BERGES DIETRICH
IPC: B65H59/16
Filed: 1991-01-31
Abstract: Abstract of the Disclosure An apparatus for imparting a braking force to an advancing strand is disclosed, and which includes a mechanical compensating arm brake followed in series by a movement dependent brake.  The movement dependent brake may take any one of several forms, including an eddy-current brake which is directly connected to a roll which is driven by the strand, a hysteresis brake which is directly connected to a roll which is driven by the strand, or a brake of any type which is connected to a roll which is driven by the strand via a clutch, such as a centrifugal clutch, which is operated as a function of the speed of the movement of the strand.
Patent CA-2038593-A1 (CA)
Title: Apparatus for the unwinding of flexible sheet-like structures from a roll
Inventor: HONEGGER WERNER
IPC: B65H5/28
Filed: 1991-03-19
Abstract: ABSTRACT OF THE DISCLOSURE An unwinding apparatus has a vertically adjustable bearing arrangement for bearing a winding unit.  A winding core carries a roll of printing products, wound up together with a winding band. For unwinding the printing products and circumferential driving of the winding unit, the latter is lowered onto round bands, which can be driven in arrow direction A. A band reel thereby comes into contact with the circumference of the roll at the winding band.  The band reel is arranged to seize and take up the outer end of the winding band.  As a result, it is no longer necessary to release the winding band end from the roll and fasten it to the band reel manually.     DOC. NO.:  wp/WAW26/3092-28.PAT
Patent CA-2038605-A1 (CA)
Inventor: PINCHUK LEONARD
IPC: A61L27/18
Filed: 1991-03-19
Abstract: An especially crack-resistant yet elastomeric and pliable polyurethane is provided as a polymer which is especially suitable for medical prostheses, implants, roofing insulators and the like. The polymer is a polycarbonate urethane polymer which is substantially completely devoid of ether linkages.
Patent CA-2040265-A1 (CA)
Title: Improvements in seed meter for row crop planter unit
Inventor: DECKLER HARRY C
IPC: A01C7/04
Filed: 1991-04-11
Abstract: A seed meter for a row crop planter unit having a seed disc rotating in a vertical plane includes improvements for seating individual seeds in seed cells on the periphery of the seed disc as the seed disc rotates through the seed reservoir. The improvements also include a barrier brush for preventing seeds from entering the delivery tube directly from the reservoir, and a brush holder which limits the effective width of a peripheral retainer brush so that the retainer brush cannot retain two seeds simultaneously in the same seed cell.
Patent CA-2040873-A1 (CA)
Inventor: BOUSSIGNAC GEORGES
IPC: A61F2/958
Filed: 1991-04-19
Abstract: A B R E G E - Cathéter pour conduit morphologique. - Selon l'invention, ce cathéter est caractérisé en ce qu'il comporte un manchon gonflable (6), entourant l'extrémité distale (2) dudit cathéter et relié à l'extrémité proximale dudit cathéter par au moins un conduit de gonflage (8) susceptible d'être relié à un dispositif de gonflage et en ce que ledit manchon gonflable (6) peut prendre soit un état dégonflé pour lequel il est plaqué contre ladite extrémité distale dudit cathéter, soit un état gonflé pour lequel il est plaqué par sa paroi externe contre la paroi interne (3a) dudit conduit morphologique (3) en ménageant alors un espace annulaire (12) entre sa paroi interne et ladite extrémité distale dudit cathéter. Figure 3.
Patent CA-2041213-A1 (CA)
Title: In-vitro method for producing antigen specific human monoclonal antibodies
Inventor: GOROFF DIANA KEENAN
IPC: C12N5/10
Filed: 1991-04-25
Abstract: AN IN-VITRO METHOD FOR PRODUCING ANTIGEN SPECIFIC HUMAN MONOCLONAL ANTIBODIES                ABSTRACT OF THE DISCLOSURE      A method of amplifying production of IgG, IgA and IgM antigen specific human monoclonal antibodies from transformed, T-cell depleted, human peripheral blood lymphocytes through the use of an adjuvant system consisting of 8-mercaptoguanosine and at least one of the cytokines interleukin-4 and interleukin-6.  Also included in the invention is the adjuvant system and a kit comprising the system.
Patent CA-2044573-A1 (CA)
Title: Polyamic acid structures, and methods of fabrication thereof
Inventor: DAVIS CHARLES R
IPC: B29K79/00
Filed: 1991-06-13
Abstract: ABSTRACT OF THE DISCLOSURE      A structure comprising a free-standing polyamic acid film substantially free of phthalic acids.  A method of fabricating such a structure which comprises applying a polyamic  acid  solution  to  a  substrate,  partially  or substantially completely removing the solvent from the polyamic acid solution by heating the same, removing the free-standing  polyamic  acid  film  which  is  free  from phthalic acids,  laminating the film to a substrate at elevated temperature and pressure and thermally curing the laminated,  free-standing polyamic acid film to the corresponding polyimide. A structure comprising one or a plurality of such free-standing polyamic acid films with electrically  conducting  layers  therebetween  is  also disclosed as is a method of fabricating such a structure. Further disclosed is the use of a thermoplastic polyimide adhesive precursor which permits 2nd  level multilayer packaging  applications  and  a method  for  forming  such packaging.
Patent CA-2044581-A1 (CA)
Inventor: SEIMIYA KOUICHI
IPC: B24B37/00
Filed: 1990-10-30
Abstract: An electro-abrasive polishing process of the inner surface of pipes to an extra-smooth mirror finish com-prises a preliminary-polishing process and a subsequent mirror-finishing process. The preliminary-polishing process is continued until the roughness of the inner surface of the small-diameter pipe is reduced to at least 0.5 µm Rmax or less by electro-abrasive polishing process of the inner surface of the small-diameter pipe by inserting a preliminary-polishing tool electrode comprising a core electrode wrapped with a non-woven nylon sheet in the small-diameter pipe to be polished and passing a small amount of current through the elec-trolyte between the small-diameter pipe that serves as the anode and the tool electrode that serves as the cathode and, at the same, time, by mechanically polishing the inner surface of the small-diameter pipe by rotating the tool electrode and axially reciprocating it or the small-diameter pipe relative to each other. In the subsequent mirror-finishing process, similar polishing operations are repeated using a mirror-finishing tool electrode that comprises a core electrode wrapped with urethane sheet. The preliminary-polishing process is switched to the subsequent mirror-finishing process in appropriate timing. As the electrolytic decomposition by the preliminary-polishing and mirror-finishing tools and the rotation of the tools and axial reciprocation of them or the small-diameter pipe relative to each other in the two processes work so effectively that the original surface roughness of approximately 3 µm Rmax is reduced to a mirror finish level of approximately tens of nanometer.
Patent CA-2045266-A1 (CA)
Inventor: WILLIAMS DAVID R
IPC: A61K8/22
Filed: 1991-06-21
Abstract: An oral composition is provided in the form of a clear gel dentrifice containing hydrogen peroxide and a polyoxyethylene-polyoxypropylene copolymer.  The gel is stabilized against loss of viscosity at low temperatures by the presence of glycerol in amounts more than 30% but less than 50%.  The weight ratio of glycerol to copolymer must range from 1:0.7 to 1:0.4.  Advantageously for peroxide stability, the composition has a pH of less than 3.          Phosphoric acid is beneficial as the acidifying agent.
Patent CA-2045866-A1 (CA)
Title: 17-beta-acyl-3-carboxy-androsta-3,5-dienes as testosterone 5 alpha-reductase inhibitors
Inventor: RASMUSSON GARY H
IPC: C07J51/00
Filed: 1991-06-27
Abstract: TITLE OF THE INVENTION          17.beta.-ACYL-3-CARBOXY-ANDROSTA-3,5-DIENES AS TESTOSTERONE 5.alpha.-REDUCTASE INHIBITORS            ABSTRACT OF THE INVENTION          17.beta.-ACYL-3-CARBOXY-ANDROSTA-3,5-DIENES AS TESTOSTERONE 5.alpha.-REDUCTASE INHIBITORS OF THE FORMULA:    wherein R is C1-C6 linear or branched alkyl; C3-C8 cycloalkyl, which can be substituted with C1-C4 alkoxy or  C1-C4 linear/branched alkyl; C6-C12 aryl, which can be substi-tuted with one or more of: -OH, -OC1-C4 alkyl, C1-C4 alkyl, -(CH2)mOH, -(CH2)n COOH, including protected -OH, where m 18 1-4, n is 1-3, and pharmaceutically acceptable salts or esters thereof. Also described is a pharmaceutical formulation.  The above compounds are active as testosterone 5a-reductase inhibitors and thus are useful topically for treatment of acne, seborrhea, female hirsutism, and systemically in treatment of benign prostatic hypertrophy.
Patent CA-2047590-A1 (CA)
Title: Door Latch Assembly
Inventor: ADAMS RICHARD
IPC: E05B63/16
Filed: 1991-07-23
Abstract: A latch assembly comprising a housing; a latch element retractably mounted in said housing;  a spindle extending transversely  through  the  housing  and  rotatably  mounted therein; an operative connection between the spindle and the latch element whereby the latch element is retracted into the housing in response to turning movement of the spindle comprising two hub elements relatively rotatably mounted on the   spindle,   an  operating  plate  arranged   to  move longitudinally of  the housing  in response  to  rotational movement of the hub elements,  a drawbar attached to the latch element for movement therewith, and a latch lever through which movement of the operating plate is translated to the drawbar; and a pawl for selective engagement with one or the other or neither of said hub elements.
Patent CA-2051701-A1 (CA)
Title: Apparatus and method for measuring length of moving elongated object
Inventor: JIN DONG Z
IPC: G01B11/02
Filed: 1991-02-28
Abstract: ABSTRACT     Disclosed are a length measuring apparatus for accurately measuring the length of a communication cable or other elongated object in the moving state and a method for the same. The preferable length measuring apparatus is a combination of a marking system and encoder system. The marking system counts the number of times a cable (1) moves by a standard length measurement distance (S) using that standard length measurement distance as one unit. To detect the conveyance of the cable by standard length measurement distances, a marker (43) makes marks (44) on the cable surface and the marks are detected by a laser switch or other sensor (46). The fine differences in distance between the standard length measurement distance and the mark interval  (MS), that is, the surplus lengths (C,), are detected from the value of an encoder at the timing of detection of the marks. The length measuring apparatus body (51) controls the marker and sensor and calculates the final distance of movement of the cable, that is, the measured distance of the cable, by adding the product of the standard length measurement distance and the count to the sum of the above-mentioned surplus lengths.
Patent CA-2053197-A1 (CA)
Inventor: MAURICKX THIERRY
IPC: C22C38/08
Filed: 1991-10-10
Abstract: Steel with improved weldability, exhibiting a good resistance to cracking in the case of high welding energies, a good cold resilience and requiring no preheating before welding. 
<??>The weight composition of the steel is the following: 
 
  - from 0.07 to 0.11 % of carbon, 
  - from 1.40 to 1.70 % of manganese, 
  - from 0.20 to 0.55 % of nickel, 
  - from 0 to 0.30 % of copper, 
  - from 0 to 0.02 % of niobium, 
  - from 0.005 to 0.020 % of titanium, 
  - from 0.002 to 0.006 % of nitrogen, 
  - from 0 to 0.15 % of silicon, 
 the remainder being iron.
Patent CA-2053919-A1 (CA)
Inventor: EDWARDS JEFFREY C
IPC: F16K5/06
Filed: 1990-04-17
Abstract: Once a new oil well has been drilled and cased, a test string is set in place for the purpose of evaluating the production potential of the chosen formation.  One way of controlling the operation of the various tools included in the test string is by changes in the pressure differential between the tubing and the annular space which surrounds it in the well, and an essential component of the test string to be controlled in this way is the sub-surface; control valve, which may conveniently be a ball valve. However, a problem is experienced where the pressure of fluid acting on the upstream side of the ball is very high; the frictional forces caused by the ball being pressed up against the seating cm its downstream side may be so high as to make the ball stick. The invention seeks to avoid this by enabling the actuating force to be applied to the ball, via a differential thread force multiplier.        Another problem experienced when employing a biased-closed valve is that the annulus pressure; needed to keep the valve open may have to be maintained for extended periods. The invention solves this one by providing latch means whereby the valve actuating sleeve may be retained in the valve-open position even when the applied annulus pressure is removed, a first pulse of applied annulus pressure causing the valve to open and then, as the pressure is removed, become latched in the open state, and thereafter a second pulse of applied annulus pressure unlatching the valve and allowing it to close once the pulse has ended.
Patent CA-2056008-A1 (CA)
Inventor: GALET VINCENT
IPC: C07C391/02
Filed: 1991-11-22
Abstract: Composés de formule générale (I) : (I) où R1, R2, R4, A et B sont définis dans la description. Médicaments.
Patent CA-2057800-A1 (CA)
Inventor: LLOYD MARK A
IPC: H01M10/625
Filed: 1991-12-17
Abstract: BATTERY WARMER        ABSTRACT OF THE DISCLOSURE        A battery blanket of the type comprising an outer cover,  an heating element adjacent one surface of the outer cover and an insulating material between the heating element and the other surface of the outer cover is modified by the provision of  an  insulating material which has an R value greater than 2.0 and an uncompressed thickness less than 0.6 inches.  This  enables an improved blanket for fitting in reduced areas and for better folding of the blanket to follow the contours of the battery.
Patent CA-2058447-A1 (CA)
Title: Exercise and toning apparatus
Inventor: GRENFELL HUGH W
IPC: A61H1/02
Filed: 1990-06-04
Abstract: An apparatus for exercising and/or toning the muscles of the waist, hips and thighs of a user, comprises an e.g. circular support (1) for the user to sit upon, the support (1) resting at its centre on a mount (2) which enables the support to tilt in selected radial directions relative to a vertical axis. The support (1) may be arranged so that its periphery rests on a base (3) and the point of contact between the support (1) and a base (3) moves in a circle around the base as the user causes the direction of tilt to progress around in a circle by a circular movement of the hips.  In a modified apparatus a drive means is provided to cause the direction of tilt of the support to progress around in a circle.
Patent CA-2060995-A1 (CA)
Title: Data processing system and method for handling interchangeable image objects for documents having a plurality of sizes
Inventor: THOMAS PAUL G
IPC: G06T3/40
Filed: 1992-02-11
Abstract: A DATA PROCESSING SYSTEM AND METHOD FOR HANDLING INTERCHANGEABLE IMAGE OBJECTS  FOR DOCUMENTS HAVING A PLURALITY OF SIZES                               Abstract A   data   processing   system   and   method   handles interchangeable image objects for documents having diverse sizes  and  formats.   This  enables  storing,  printing  and displaying images of documents having a variety of sizes on different types of equipment in the same system.  Compressed A and B size document images are stored in a first type image  file  which  is  Mixed  Object  Document  Content Architecture format (MO:DCA-P), having a field for the size of the document image. C to E size document images are each divided into component tile images which are each compressed and stored in a second type image file which has a format interchangeable with the format of the first image file, but includes map data relating the tile images to the document image.  A preview image can be included in the image file, which can be immediately displayed or printed while the tile images are being decompressed.  The second image file is in a second type Mixed Object Document Content Architecture format (MO:DCA-X), which has the same overall format as the MO:DCA-P format.  The preview image is concealed in a NoOP field and is used typically by those  I/O devices in the system which are capable of handling C to E size documents. This enables the two types of image files to be commingled in    a    common    system    storage,    permitting    the interchangeability of the image objects for documents of diverse size.
Patent CA-2062203-A1 (CA)
Title: Denitrifaction of septic tank effluent
Inventor: ROBERTSON WILLIAM
IPC: C02F3/28
Filed: 1992-03-03
Abstract: Water draining from a septic tank contains ammonium, which traditionally is oxidised to nitrate in an aerobic soakaway. When the effluent enters the groundwater, the resulting nitrate concentration can be troublesome. A body of organic carbon, eg wood chppings, is provided, and the nitrate-laden effluent is passed through the carbon. The carbon is placed in the ground so as to be anaerobic: for example, the carbon may be placed below the water table; or the carbon may be mixed into a layer of fine silt, which is maintainedin a state of tension-saturation by the affluent. Under anaerobic conditions, the nitrate is reduced by micro-biological action. The carbon is located such that the effluent naturally flows through the carbon, no pumps etc being required. The carbon may be located directly below the soakaway, or the carbon may be in a trench positioned to the side if the groundwater has a lateral component of flow.
Patent CA-2062590-A1 (CA)
Title: Submersible pump protection for hostile environments
Inventor: JOHNATAKIS JOHN
IPC: H02K9/19
Filed: 1992-03-10
Abstract: ABSTRACT OF THE DISCLOSURE                The present invention is directed to the protection of submersible electric pump motors against hostile environments involving corrosive, abrasive and erosive fluids. The invention includes an elastomeric boot or sleeve which substantially envelops the motor and which is sealed at its mouth to the periphery of the motor at one end. The interior of the boot between the motor and the boot wall is substantially filled with a heat transfer fluid such as ethylene glycol or a mixture of same and water.
Patent CA-2063276-A1 (CA)
Inventor: KILICARSLAN NEVZAT
IPC: F16M13/02
Filed: 1992-03-18
Abstract: Project # ATHS-83 ABSTRACT : In this invention, four clamps added to the four side of an air fan to eliminatenailing or screwing requirements of an air fan far easier installation by a non-professional person and provide virtually noiseless fan operation for washrooms, bathrooms and/or kitchen ranges. Therefor, the fan will be clamped to the ceiling (mostly dry wall) and the possible vibration will be absorbed by the ceiling without passing any of the other foundation of the construction. When coupled with ASLAN tech's duct with air-tight flap and gasket (patent applied) these type of air fans will provide easier installation and substantial energy savings wherever being used.