baber/WOPTO huggingface dataset:
Patent CA-2058655-A1 (CA)
Title: Method and apparatus for cleaning thermoplastic material for reuse
Inventor: TEENY PARRY
IPC: B29B17/02
Filed: 1991-12-31
Abstract: METHOD AND APPARATUS FOR CLEANING          THERMOPLASTIC MATERIAL FOR REUSE                      ABSTRACT Apparatus and a method for its use in cleaning comminuted thermoplastic material for reuse in manufacture of molded plastic products.  Batches of plastic including adherent label materials and adhe-sives are agitated by a rotor until frictionally heated to a predetermined temperature.  A flow of air is used to carry away loosened labels and adhesives.  A small amount of water is introduced as a spray to dissolve adhesives and soften remaining label materials further, while loosened pieces continue to be removed in a stream of air.  Thereafter, remaining adherent par-ticles are removed in an aspirator providing a multi-stage cascade through counter currents of air, and the particle-carrying air is then cleaned in a cyclone separator.
Patent CA-2058794-A1 (CA)
Inventor: KANAI TSUNEO
IPC: G02B26/02
Filed: 1992-01-06
Abstract: In  an  optical  MDF  (main  distributing  frame)  for interconnecting external  subscriber optical lines  (122) with  office  optical  lines   (131)   through  jumpering operation, a matrix waveguide  (128,  129,  130) having a plurality of crosspoints coupled with external lines and office lines is used. The matrix waveguide has a groove (235 in Fig.4A) at each crosspoint so that said crosspoint is switched ON or OFF depending upon whether said groove is filled with matching oil or not, so that one of the external lines is connected to the selected office line. Said matching oil has the same refractive index as that of waveguides.  Each  crosspoint  groove  is  coupled  with  a respective oil  pool  (236), which supplies matching oil which has essentially the same refractive index as that of a waveguide to said groove. Switching at a crosspoint is carried out in a manner that a light signal in a waveguide goes  straight through the crosspoint when a groove is filled with matching oil, and the light signal changes its direction at the crosspoint through total internal reflection when the groove is empty. A jumpering operation to connect or disconnect a crosspoint is  carried out by a  robot (133), which fills or pulls out matching oil in the oil pool at the designated coordinates. Each external line is branched by using an optical directional coupler (237) for test purposes, and one of the branch lines subject to test is selected by using a similar lxN type matrix waveguide.
Patent CA-2062400-A1 (CA)
Title: Air-activatable polymerisable compositions
Inventor: KNEAFSEY BRENDAN
IPC: C09K3/10
Filed: 1992-03-05
Abstract: ABSTRACT OF THE DISCLOSURE            "Air-Activatable Polymerisable Compositions"   A one-part, air-activatable, polymerisable composition comprising:            (a)   at least one free-radically polymerisable monomer, and (b)   an  activator  system  for  effective  polymerisation  of  the free-radically  polymerisable  monomer, said  activator  system comprising at  least one auto-oxidisable compound of a formula which includes the structure I:-         I where x  is O or 1,  and where the  lines representing unfilled valencies indicate bonds to carbon, hydrogen or hetero atoms, alone or in combination with a weak acid; with the proviso that:   when x = O, the nitrogen atom in structure I is not bonded to a second nitrogen atom; and when x = 1 there is a structure I in the compound in which the ? = ? moiety does not form part of a phenyl ring;   with the proviso that the composition does not contain a peroxide, or a peroxide precursor which produces peroxide in the absence of air or any ingredient which is a significant source of radicals in the absence of air.       Preferred auto-oxidisable compounds are selected from the group consisting of partially hydrogenated pyridines,  condensation products of  cyclic  ketones  and  ureas,  Schiff's  bases,  indoles,  pyrroles, imidazoles,    piperazines,    carbazoles,    tetrahydroquinolines,    and substituted derivatives thereof, particularly dihydropyridines.     The  composition  may  also  contain  a  soluble   ionic  salt, particularly a cobalt or iron salt.   The  compositions  as  described  are  stable  on  storage  in  the absence of air, are activated by exposure to air, and will then cure in either the presence or absence of air.
Patent CA-2065382-A1 (CA)
Title: Environmental sealing
Inventor: PEACOCK DONALD G
IPC: F16J15/14
Filed: 1990-08-14
Abstract: A method of sealing a substrate (7) which comprises positioning adjacent the substrate a moveable wall (23) and providing a material in communication with the wall, the liquid (11) having a vapour pressure sufficient to maintain the wall in sealing engagement with the substrate.
Patent CA-2067691-A1 (CA)
Inventor: BURNS JAMES A
IPC: B65D51/00
Filed: 1992-04-30
Abstract: A combination closure is provided, particularly for evacuated collection tubes for body fluids such as blood, including an elastomer stopper and plastic cover combination with cooperating locking surfaces spaced   around  the  circumference  thereof.    The stopper includes vertically spaced sealing rings for insertion into the open end of the tube.  Also, the stopper  includes  a  plurality  of  circumferentially spaced   protrusions   and   the   cover   or shield cooperating circumferentially spaced indentations or ports to provide a locking force between the pro-trusions  and  indentations.    As  a  result,   the dimensions of the stopper and the plastic cover are reduced, which in turn reduces the penetration force required  to  insert  a  needle through the  stopper. Moreover,  the  reduced  dimension  of  the  closure allows it to be locked to a bead on the tube whether. plastic or glass,  and the  lesser  overall  diameter allows  the closure on  the  tube to  fit more tube holders or containers during and prior to use.   In addition, the smaller dimension reduces the tendency of the closure to "rock" on the tube.   The closure of  the  invention  includes  means  for  containing liquid  droplets  or  aerosol  when  the  needle  is removed from the stopper.
Patent CA-2068437-A1 (CA)
Title: Copper oxide whiskers and process for producing the same
Inventor: NIKKESHI SUSUMU
IPC: C30B25/00
Filed: 1992-05-12
Abstract: Abstract of the Disclosure Novel copper oxide whiskers each consisting of a copper oxide single crystal can be obtained by heating metallic copper at a temperature of 250-700°c in an oxygen-containing atmosphere.          Copper oxide whiskers can be efficiently obtained by heating metallic copper at a temperature not lower than the melting point and then heating it at 250-700°C in an oxygen containing atmosphere.          Copper oxide whiskers can also be efficiently obtained by heating, in an oxygen-containing atmosphere, an alloy which is a uniform mixture of metallic copper and at least one element of the group IIIb of periodic table.
Patent CA-2076455-A1 (CA)
Title: Process for making chromic acid
Inventor: BUCKHOLTZ HARRY E
IPC: C01D3/04
Filed: 1992-08-20
Abstract: Case 6423 RDF/dka IMPROVED PROCESS FOR MAKING CHROMIC ACID Abstract Disclosed is an improvement on a process in which sodium chromate is reacted with sulfuric acid to produce sodium bichromate and sodium sulfate, and the sodium bichromate is reacted with sulfuric acid to produce chromic acid and sodium bisulfate.  In the improvement, the sodium sulfate and sodium bisulfate are reacted with hydrogen chloride to produce sulfuric acid, which is recycled, and sodium chloride.
Patent CA-2077272-A1 (CA)
Inventor: CONNER MIKE H
IPC: G06F9/44
Filed: 1992-09-01
Abstract: A method, system and program for effectively managing class method names by collecting representations of all of the names and additional supporting information in a single data structure. Management is accomplished by the operation of an algorithm in the memory of a processor which employs two mechanisms. First, the class method procedure tables are initialized by class specific procedures. This allows applications to access the methods without requiring externalization of the method names. The information provided by the specific procedures is retained by the class object and is accessible via class methods whenever the information is required. Second, any additional supporting information for methods, in particular the offset in the method procedure table for each method, is recorded in a single externally named data structure. The combination of the two mechanisms eliminates the requirement of external names on a per method basis.
Patent CA-2083028-A1 (CA)
Inventor: MONEREAU CHRISTIAN
IPC: C01B3/50
Filed: 1992-11-16
Abstract: ABR?G? DESCRIPTIF L'installation comporte deux perméateurs montés en série, à savoir un perméateur simple à une entrée et deux sorties et un perméateur à reflux. Le gaz de production est constitue par la réunion des deux perméats. Application à la production d'hydrogène impur.
Patent CA-2084544-A1 (CA)
Title: State-dependent discharge path circuit
Inventor: OHANNES JAMES R
IPC: H03K19/003
Filed: 1992-12-04
Abstract: Attorney Docket No. NS1937 STATE-DEPENDENT DISCHARGE PATH CIRCUIT            ABSTRACT A circuit for use in connection with tristate output buffers in order to provide concurrently for fast discharge of the output pulldown transistor base and at the same time for building in protection against reverse breakdown in the pulldown transistor. The innovation consists of providing two discharge paths to ground for the base of the output pullup transistor. A low-capaci-tance path is activated only while the output buffer is in its active mode. In the preferred embodiment of the invention, this low discharge path consists of two MOS transistors in series (Q23 and Q26), one of which is controlled by the enable signal input E of the buffer circuit and the other by the data signalinput VIN of the buffer circuit. The other path to ground is available whenever the data signal input VIN is low regardless of whether the buffer is in its active or inactive mode. This other path provides discharge protection for the base of the pullup transistor for the buffer in its inactive mode, and has incor-porated into it reverse breakdown protection in the form of voltage drop devices such as forward-biased diodes.
Patent CA-2085261-A1 (CA)
Title: Mailing machine including printing drum control system
Inventor: ECKERT ALTON B JR
IPC: G07B17/00
Filed: 1992-12-14
Abstract: A mailing machine base adapted to have a postage meter mounted  thereon,  wherein  the  meter  includes  a  postage printing drum having a home position, the base comprising, structure for moving the drum, a d.c. motor for driving the drum moving structure,  a microprocessor,  a power  switch connected  between  the  d.c.  motor  and microprocessor,  a comparator connected between the microprocessor and d.c. motor for receiving therefrom a signal corresponding to the back e.m.f.  voltage  of the  d.c.  motor and providing  a comparison   signal   to   the   microprocessor,   and   the microprocessor programmed for, providing a reference voltage signal for the comparator corresponding to a desired hack e.m.f.  voltage for causing the d.c.  motor to drive the postage  printing  drum  at  a  desired  constant  velocity, energizing the power switch with a first signal for causing the d.c. motor to accelerate the drum at a substantially constant rate to substantially the desired constant velocity from the home position thereof during a first predetermined time  interval,  determining  whether  the  back  e.m.f.  is greater than the reference voltage,  energizing the power switch with the first signal for a second predetermined time interval if the back e.m.f. voltage is not greater than the reference voltage, and energizing the power switch with a second signal for a third predetermined time interval if the back e.m.f. voltage is greater than the reference voltage and delaying energizing with the second signal if the back e.m.f. voltage is not greater than the reference voltage, thereby  causing the d.c. motor to continue driving the drum at substantially the desired constant velocity.
Patent CA-2085342-A1 (CA)
Title: Stable aqueous drug suspensions
Inventor: KAPLAN MILTON R
IPC: A61K9/50
Filed: 1991-06-13
Abstract: Finely divided drug particles are coated with a lipid or bioadhesive polymer to form microspheres (226) having a particle size of about 550 micrometers or less, and coated with two or more enteric coatings, at least one of which is water insoluble, to form microcapsules. The resultant microcapsules can be suspended in an aqueous solution to form stable oral doses of the drug.
Patent CA-2086122-A1 (CA)
Title: System for echo cancellation comprising a ghost cancellation reference signal
Inventor: KOO DAVID
IPC: H04L1/24
Filed: 1992-05-07
Abstract: A system for echo cancellation for use in particular in television receivers.  The system features a ghost cancellation reference signal which exhibits improved performance in noisy environments and which exhibits the flat and wide bandwidth necessary for effective channel characterization while exhibiting a higher and more evenly distributed amplitude versus time characteristic than that provided by known, non-cyclic ghost cancellation signals.
Patent CA-2086418-A1 (CA)
Inventor: YAMAGISHI YOSHIYASU
IPC: C08G14/08
Filed: 1991-04-30
Abstract: [ABSTRACT]     It is the object of the present invention to improve the resistances to water, weather and boiling water and the workability of cocondensed resins.  According to the present invention, the foregoing object is attained by providing a cocondensation resin which entails cocondensing urea with a polyvalent phenol.  It is generally difficult to cocondense urea with a polyvalent phenol.  According to the present invention, nevertheless, a cocondensed resin is easily able to be produced by reacting 1 mol of urea with 0.2 to 2.0 mol of a polyvalent phenol and 0.1 to 2.0 mol of an aldehyde donor by heating in a pH range from 4 to 9.
Patent CA-2086544-A1 (CA)
Inventor: MORRISON KYLE E
IPC: B29C65/02
Filed: 1991-07-31
Abstract: Disclosed is a method and apparatus for forming diagonal splices in flexible, fusible materi-al (12, 16) and the material spliced accordingly. The splice is formed by overlapping the material, tensioning (30, 32) the material at the area to be spliced, and heating a strip of the material under tension to its fusion temperature, thereby fusing and separating (24) the material at the strip.  The splice (51) is nearly undetectable to the untrained eye.
Patent CA-2090483-A1 (CA)
Title: Fabrication of multifunctional holographic optical elements and application in photometers
Inventor: COHN GERALD E
IPC: G03H1/00
Filed: 1991-10-03
Abstract: The application of one or more multifunctional holographic optical elements (HOE's) (40, 16) to a photometric apparatus, and a spectrophotometer in particular, is disclosed. Fabrication methods for HOE's especially useful in the foregoing application result in holograms which perform several classical optical (i. e., light gathering and steering) functions. The HOE's so fabricated are useful in a detector mode (16) (i.e., to process light from an illuminated sample for analysis of some portion of its spectrum); in a source mode (40) (i.e., processing light from a source (51) to a focus on a sample); and a combination of source and detector modes.
Patent CA-2090947-A1 (CA)
Title: Mine prop headboard
Inventor: PIENAAR FRANS R P
IPC: E21D15/48
Filed: 1993-03-03
Abstract: The mine prop headboard (10) is used to support an inflatable grout bag (44) and is located transversely on an end of an elongate mine prop (12) which is in use installed upright between a hanging wall and a footwall in a mine working. The headboard includes a chock assembly which is composed of parallel, elongate timber chocks (14). A steel reinforcement sheet is secured to and extends over the support surface of the chock assembly to provide tensile reinforcement a grout bag is placed on the headboard and is inflated with grout under pressure sufficient to apply a compressive axial force to the prop between the hanging wall and the footwall.
Patent CA-2092458-A1 (CA)
Title: Fluoro-organo modified uv-curable epoxy silicone and epoxyfluorosilicone compositions
Inventor: ECKBERG RICHARD P
IPC: C08G59/30
Filed: 1993-03-25
Abstract: ABSTRACT OF THE DISCLOSURE      Epoxysilicones, epoxyfluorosilicones, and organic cycloaliphatic epoxy resins are blended with fluoro-containing   organic   molecules   and   an   iodonium photocatalyst to form a UV-curable composition which exhibits  improved  adhesion  resistance  and  solvent resistant properties upon curing when compared to similar compositions without  the  fluoro-organic molecule.  The co-curable compositions can be cured at very high conveyor speed rates, 3uch as 500 fpm.  The curing also requires much less UV energy than is necessary to cure similar compositions without the fluoro-organic molecule.  By selecting proper fluoro-organic  molecules,  the  fluorine  content  of  the composition can be greatly increased.
Patent CA-2093395-A1 (CA)
Inventor: PLAMPER GERHARD
IPC: A01D34/00
Filed: 1993-04-05
Abstract: A mulching blade for a lawn mower including in combination a diagonal flange on the blade tip upwardly extending at a 20, a neighboring cutout in the back of the blade, and a spaced downwardly extending flange section.      These elements cooperate to recirculate the grass clippings in a circular manner through the region of the cutting edge so as to provide for a low inertia improved efficiency multi-purpose blade.
Patent CA-2096227-A1 (CA)
Title: Card reader apparatus with replaceable card guide
Inventor: ANGLIN NOAH L
IPC: G06K7/015
Filed: 1991-11-22
Abstract: A point of sale terminal (20) having a reader assembly for reading a data card (48) having data stored on at least one data track thereon. The terminal includes a housing defining a guide slot (29) location for the data carrier and a transducer for detecting data stored on the data track. A removable guide element (23) is mounted to the housing at the data carrier slot location. This guide element (23) has at least a bottom wall portion (39) defining a bottom guide surface of a guide slot for the data card and one major sidewall portion (37) defining one side guide surface of a guide slot (29). An access window (50) is formed in the major sidewall portion. A mounting arrangement mounts the transducer at a prearranged location with the access window for accurate detection of data stored on the data track as the data card (48) is manually swiped through the guide slot (29).
Patent CA-2101137-A1 (CA)
Inventor: FISCHER DAN E
IPC: A61C5/04
Filed: 1993-07-22
Abstract: An apparatus for applying coatings to various surface types.  The apparatus includes a dispenser for holding a quantity of the coating material and a delivery tip having adjustable bristles at one end.  The bristles are slidably secured in a spiral passageway formed by a helical ridge inside the delivery tip,  thereby allowing the coating material to be continuously applied without the need to stop  the  procedure  and  rewet  the  applicator.    The applicator  permits  accurate  control  of  the  amount  of coating material applied to the surface.  In this way, the surface receives neither an excessive nor an insufficient amount of the coating material.  Moreover, the bristles may be pushed in to permit the coating material to be applied to a small, irregular surface, such as pits and fissures, or pulled out to permit the  bristles  to  fan out  for application to broad surface areas.  Delivery of relatively viscous coating materials is made easier by providing the spiral passageway around the bristles so that the coating material does not have to flow through the bristles.
Patent CA-2102446-A1 (CA)
Inventor: SMITH PAUL F
IPC: H04B10/2507
Filed: 1993-11-04
Abstract: The apparatus (10) consists of a filter (24) for anti-aliasing the received RF signal.  After filtering, an Analog-to-Digital (A/D) converter (25) converts the received RF signal to a digital signal.  The digital signal is then converted in an optical converter (26) to an optical signal.  At the other end, the received optical, digital signal is first converted (42) to an electrical, digital signal.  The electrical, digital signal is then converted to an RF signal in a Digital-to-Analog (D/A) converter (43).  The method consists of anti-aliasing the RF signal (64).  The RF signal is converted to a digital signal (65) and then converted to an optical, digital signal (68).  At the other end, a received optical, digital signal is converted to an electrical, digital signal (82) which is then converted to an RF signal (85) and filtered (86).
Patent CA-2103533-A1 (CA)
Title: Hcv peptide antigens and method of determining hcv
Inventor: SEIDEL CHRISTOPH
IPC: C07K7/04
Filed: 1993-08-06
Abstract: ABSTRACT   New HCV peptide antigens are described. These peptide antigens are suitable for the determination of HCV antibodies as immunogens for the preparation of antibodies to HCV and as immunogens for the preparation of vaccines to HCV.
Patent CA-2104633-A1 (CA)
Inventor: LIU RONG FAN
IPC: B60L9/08
Filed: 1993-08-23
Abstract: The invention relates to an active filter for filtering the current, and possibly improving the power factor, of a traction unit supplied by a single-phase catenary by means for collecting the voltage supplied by the catenary and distributors for distributing the working voltages to the traction equipment and to the auxiliary equipment (6, 7), characterised in that it comprises a number, greater than or equal to 2, of bridges (10, 11) with forced switching and with a voltage source, the bridges being connected in series on the a.c. side and being supplied with d.c. voltages independently, the active filter (8) also including a control system which forces the switching of the bridges so as to develop, on the single-phase side, an alternating current from various voltage levels resulting from the combination of the d.c. voltage values of the said bridges, this developed current being delivered to the said collector and distributor means in order to compensate for the harmonics generated, and optionally the reactive power consumed, by the traction equipment and the auxiliary equipment, and retransmitted to the catenary. <IMAGE>
Patent CA-2105710-A1 (CA)
Title: Network of hierarchical communication systems and method therefor
Inventor: LEOPOLD RAYMOND J
IPC: H04W16/32
Filed: 1993-09-08
Abstract: NETWORK  OF  HIERARCHICAL  COMMUNICATION  SYSTEMS               AND  METHOD  THEREFOR                  ABSTRACT OF THE  DISCLOSURE       A hierarchical communication network includes primary, secondary, and tertiary communication systems. The primary system uses orbiting satellites as communication nodes and forms a pattern of cells that may cover the entire earth and that move over the earth. A given spectrum is divided among the cells in accordance with a reuse plan.  Any number of secondary, terrestrial-based systems have secondary region areas of coverage that are substantially smaller than the distance to the orbits of the satellites used by the primary system.  Secondary systems monitor the primary system to determine which channels of the spectrum are available for use in their secondary regions.  Any number of tertiary, terrestrial-based systems reside within a secondary region and have tertiary region areas of coverage that are substantially confined within buildings.  Tertiary systems use channels concurrently used by the primary system in the same area where their tertiary regions are located.