baber/WOPTO huggingface dataset:
Patent CA-2026333-C (CA)
Title: Diversity coding for transparent self-healing communications networks
Inventor: AYANOGLU ENDER
IPC: H04L25/49
Filed: 1990-09-27
Granted: 1997-12-16
Abstract: This invention is a technique for the susbtantially instantaneous self-healing of digital communications networks. Digital data streams from each of N nearby sources are combined and encoded to produce N+M coded data streams using a coding algorithm. The N+M coded data streams are then each transmitted over a separate long haul communications link to a decoder where any N of the N+M coded data streams can be decoded uniquely to produce the original N data streams. The original N data streams are then distributed to their respective separate end destinations. If any M or less of the N+M long haul communications links fails, i.e. as in a telephone line that gets cut or a long distance switch that fails, no rerouting of traffic need be done. Rather, the receiver detects loss of carrier on the failed link(s), and immediately supplies the missing data by decoding the data from the at least N remaining links. The technique overcomes a long felt problem of trying to reroute traffic by using sophisticated resource allocation techniques when a communications link fails.
Patent CA-2026643-C (CA)
Inventor: DIETSCHI HANS GEORG KARL
IPC: B32B17/04
Filed: 1990-10-01
Granted: 1998-04-21
Abstract: In the inventive polymeric waterproofing membranes an upper layer and a lower layer penetrate an in between lying carrier material in such a way that they are heat-sealed together. The upper layer and the lower layer are built up on the basis of at least one copolymer, which is built up of the monomer ethylene and a comonomer, selected from the group, consisting of vinylesters of a C2- to C3-alkane carboxylic acid and C1- to C4-alkyl esters of the acrylic acid.           There are also described processes for the preparation of the polymeric waterproofing membranes.           These polymeric waterproofing membranes may be used for the sealing of buildings and constructions.
Patent CA-2028780-C (CA)
Title: Rotary type injection orientation blow molding machine
Inventor: TAKEUCHI SETSUYUKI
IPC: B29C49/12
Filed: 1990-10-29
Granted: 1994-12-13
Abstract: The present invention discloses a rotary type injection orientation blow molding machine which comprises a horizontal plate vertically movably provided on a machine bed with required portions of a peripheral edge thereof inserted into tie bars stood upright on the machine bed, a transfer plate rotatably mounted on the underside of the base plate and having hold molds at these locations of the lower surface thereof, a drive device located in the central portion in the upper portion of the base plate to intermittently rotate the transfer plate by a predetermined angle, a vertical clamping device and an injection mold with stop positions of the hold molds serving as an injection molding portion, an orientation blow molding portion and a releasing portion, respectively, a blow mold and orientation blow device, and a releasing device.
Patent CA-2029732-C (CA)
Title: Electrophotographic apparatus with multiple speed mode
Inventor: ROMAN RONALD THOMAS
IPC: G03G21/00
Filed: 1990-11-13
Granted: 2001-01-30
Abstract: An electrophotographic copying apparatus having an electromechanical optical scanner, optical reflecting and focusing assembly, photosensitive latent electrostatic imaging assembly, electrostatic charge generator and applicator, and electrostatic toner applicator, wherein the scanner and photosensitive assembly have selectably variable operational speeds and the electrostatic charge and toner applicators have substantially constant application rates, and furtrher wherein the speeds of the scanner and photosensitive assembly may be selectably varied to maximize copying rate while minimizing electrostatic charge generation and electrostatic toner consumption.
Patent CA-2031286-C (CA)
Title: Methods for the biological inactivation of nucleic acids
Inventor: BROKER MICHAEL
IPC: C12P19/30
Filed: 1990-11-30
Granted: 2001-05-29
Abstract: The invention relates to methods for the biological inactivation of nucleic acids. The material which results from biotechnological production processes and which is contaminated with the genetically manipulated microorganisms used (residual fermentation broth, aqueous washings etc.) is collected in containers and broken down by autolysis and/or deliberate contamination with naturally occurring bacteria, yeasts or saprophytic fungi or by addition of purified, immobilized or non-immobilized nucleases.
Patent CA-2044608-C (CA)
Title: Motion converting mechanism and rotary tool
Inventor: INOKUCHI KATSUHISA
IPC: B25B13/46
Filed: 1990-09-20
Granted: 1994-12-13
Abstract: A motion converting mechanism wherein two sets of one-way clutch mechanisms are added to a mechanism for converting a rectilinear reciprocating motion into a rotary motion through a rack and pinion combination.  The two sets of one-way clutch mechanisms include one that engages during the forward movement of the rack and the other that engages during the reverse movement of the rack, both of which rotate an otput shaft in the same direction when they engage.  With this arrangement, the motion converting mechanism according to the present invention can rotate the output shaft in the same direction during both forward and reverse movements of the rack, thereby improving efficiency in converting the reciprocating motion into the rotary motion as compared with the conventional one.          Thus, various rotary tools utilizing this motion converting mechanism can be provided.  One of these rotary tools is a ratchet type socket wrench, in which an arm is reciprocated, so that the output shaft can be rotated in the same direction during both the forward and reverse movements of the arm. Another one is a rotary tool, such as a screwdriver, in which a grip is grasped and released, so that the output shaft can be rotated in the same direction during both actions.
Patent CA-2046588-C (CA)
Title: A forming apparatus
Inventor: TURNER JAMES ARTHUR
IPC: D21F1/52
Filed: 1990-01-17
Granted: 1996-04-02
Abstract: A forming apparatus (10) is disclosed for forming a web (W) from stock (S) ejected through a slice lip (12) of a headbox (14). The apparatus (10) includes a first wire (16) which extends in an endless loop (18) past the slice lip (12) such that the stock (S) is ejected through the slice lip (12) onto the first wire (16). A second wire (20) extends in a further endless loop (22) with the second wire (20) cooperating with the first wire (16) for defining therebetween a forming section (24) having a first and a second end (26, 28) such that the web (W) is formed during passage of the stock (S) through the forming section (24). A first and a second turning bar (30, 32) are disposed respectively within the endless loop (18) and the further endless loop (22) adjacent to the first end (26) of the forming section (24) such that the slice lip (12) is disposed in close proximity to the first end (26) of the forming section (24). The apparatus (10) also includes a curved drainage device (34), a first slot (36), a box (38), a second slot (42) and a further curved drainage device (44). The curvature of the curved drainage device (34) and the box (38) is opposite to the curvature of the further curved drainage device (44) such that the stock (S) is progressively drained through both wires (16, 20) during pas-sage through the forming section (24) from the first (26) towards the second end (28) thereof.
Patent CA-2051281-C (CA)
Title: Process for the preparation of triazolyl isopropanols
Inventor: BENIGNI FULVIO
IPC: A61K/
Filed: 1991-09-13
Granted: 1998-07-07
Abstract: An  improved  method  for  the  preparation  of fluconazole is described,  by reacting an halohydrinic intermediate  with  4-amino-1,2,4-triazole  compound  of formula II       wherein X is fluorine, chlorine, bromine or iodine and subsequent deamination with nitrous acid.  Fluconazole is useful as a antimycotic drug.
Patent CA-2052911-C (CA)
Title: Power transmission belt and method of fabricating the same
Inventor: MISHIMA KYOICHI
IPC: B29K105/10
Filed: 1991-10-07
Granted: 1996-10-01
Abstract: A power transmission belt with a belt body having a compression section, a load-carrying section, inside and outside surfaces,  and laterally spaced pulley-engaging side surfaces.  A fabric cover layer is provided on one of the  inside,  outside  and  laterally  spaced pulley-engaging side surfaces.  The fabric cover layer has an uninterrupted, substantially uniform-thickness-over the entire extent of the fabric layer on the one of the inside, outside and laterally spaced pulley-engaging side surfaces to which it attaches.
Patent CA-2054049-C (CA)
Title: Apparatus and method for removing distortion in a received signal
Inventor: KAZECKI HENRY L
IPC: H04L27/01
Filed: 1991-10-23
Granted: 1996-02-06
Abstract: In a receiver an apparatus and method substantially reduces time dispersion and multipath distortion in a received signal. An equalizer (109), including taps having gain coefficients, produces an equalized signal (110) responsive to the received signal (107) and an adaptive process signal (137), wherein the gain coefficients are adjusted responsive to the adaptive process signal (137). A first mixer (111) mixes the equalized signal (110) and a reference carrier signal (115) to produce a recovered modulated signal (119). A detector (112) detects an estimate signal (129) responsive to the recovered modulated signal (119). An error signal generator (139) generates an error signal (141) responsive to a difference between the recovered modulated signal (119) and the estimate signal (129). A second mixer (147) mixes the error signal (141) and the reference carrier signal (115) to produce the adaptive process signal (137). In a preferred embodiment, a third mixer (153) mixes the estimate signal (129) and the reference carrier signal (115) to produce a feedback signal (135) for at least one tap. The present invention advantageously permits the equalizer (109) and the detector (112) to optimally perform their respective functions while coupled together to maximize the receiver's performance.
Patent CA-2059493-C (CA)
Inventor: INOUE YOSHIYUKI
IPC: H04B10/80
Filed: 1992-01-16
Granted: 1996-11-12
Abstract: A feeding system for supplying a current to repeaters  on  communication cable including a feed line for conducting a current to the repeaters, comprising: a plurality of branching units provided on the communication cable; terminal stations each being connected through at least one of the repeaters to one of the branching units, each of the terminal stations feeding a current through the feed line to the repeaters; each of the plurality of branching units having at least one switching circuit for switching to connect the at least one of the repeaters to the communication cable or to the ground, depending on the amount of current conducting through the feed line in the communication cable; the current thresholds of the switching circuits in the plurality of branching units being different from each other.
Patent CA-2061170-C (CA)
Title: Field installable choke tube
Inventor: SCHUH DAVID N
IPC: F01N1/00
Filed: 1992-02-13
Granted: 2001-05-15
Abstract: A field installable choke tube apparatus and a method for installing the choke tube into a pulsation dampener of a compressor. The choke tube is insertable into the pulsation dampener through the opening between the nozzle and the pulsation dampener with a plurality of support arms in a retracted position. The support arms are extended after insertion of the choke tube to maintain the choke tube in a secure and predetermined position within the dampener.
Patent CA-2061646-C (CA)
Title: Wave soldering in a protective atmosphere enclosure over a solder pot
Inventor: HAGERTY LAWRENCE JOHN
IPC: B23K31/02
Filed: 1992-02-21
Granted: 1996-09-24
Abstract: A short hood for enclosing and providing a protective atmosphere over not more than the solder pot of a machine for wave soldering printed circuit boards.  Other operative areas of the machine are exposed to air.  The entrance and exit openings to the hood for the circuit boards are covered by electrically conductive curtains of thin material cut into vertical strips.  The process employs a thin layer of no-clean flux and allows up to 5% oxygen content in the protective atmosphere.
Patent CA-2070087-C (CA)
Title: Recovery of cyanide from precious metal tailings
Inventor: PFEFFER HENRY ALBERT
IPC: C02F1/20
Filed: 1992-05-29
Granted: 1997-08-19
Abstract: Process for recovering cyanide values from a mill tailings stream remaining after gold and silver have been leached from an ore, by treating the tailings stream containing both ore insolubles and remaining cyanide leachant, without a preliminary filtration, to acidification with an acid to a pH of at least 4, stripping the cyanide values therefrom with a stripping gas in a stripping column such as a baffle plate column wherein the average residence time of the column is sufficiently low that the pH of the stream does not rise above 4 and the ore insolubles do not plug the column, introducing the stripping gas and stripped cyanide values into an absorbing column containing an alkaline liquor to absorb the cyanide values, recovering the absorbed cyanide values, and removing a stripped tailings stream reduced in cyanide values.
Patent CA-2070589-C (CA)
Title: Method of preparing a nonwoven web of poly (vinyl alcohol) fibers
Inventor: RHIM HANNONG
IPC: A61F13/15
Filed: 1992-06-05
Granted: 2000-11-28
Abstract: A method of preparing a nonwoven web of poly(vinyl alcohol) fibers which involves the steps of (1) preparing an aqueous polymer solution of a defined polyvinyl alcohol); (2) extruding the resulting polymer solution under defined conditions through a die having a plurality of orifices to form a plurality of threadlines; (3) attenuating the resulting threadlines with a defined primary gaseous source to form fibers under conditions of controlled macro scale turbulence and under conditions sufficient to permit the viscosity of each threadline, as it leaves a die orifice and for a distance of no more than about 8 cm, to incrementally increase with increasing distance from the die, while substantially maintaining uniformity of viscosity in the radial direction, at a rate which is sufficient to provide fibers having the desired attenuation and mean fiber diameter without significant fiber breakage; (4) drying the attenuated threadlines with a defined secondary gaseous source; and (5) depositing the resulting fibers randomly on a moving foraminous surface to form a substantially uniform web, the moving foraminous surface being from about 10 to about 100 cm from the opening from which the last gaseous source to contact the threadlines emerges, which fibers have a mean fiber diameter in the range of from about 0.1 to about 30 µm and are substantially free of shot, with the attenuating and drying steps being carried out under conditions of controlled macro scale turbulence.
Patent CA-2080831-C (CA)
Title: Crosslinkable fluorinated aromatic ether compositions
Inventor: MERCER FRANK W
IPC: C08G81/00
Filed: 1991-04-15
Granted: 2001-10-16
Abstract: Fluorinated polyether compositions having reactive end groups, such as formula (I) (see formula I) can be crosslinked to produce cured films useful as dielectrics for microelectronic applications. Other reactive end groups such as allyl, benzocyclobutyl, N-phenyl-maleimido, alkynylphenyl, styryl, allylphenyl, cyanophenyl, and triazenophenyl are also suitable.
Patent CA-2081572-C (CA)
Inventor: STEARNS STANLEY D
IPC: G01N30/64
Filed: 1992-02-28
Granted: 1997-12-30
Abstract: La présente invention a pour objet un appareil de détection d'étincelle, comprenant une chambre fermée (21) destinée à recevoir un gaz porteur (12) circulant à travers la chambre entre des entrées (18) et des sorties (36), et le gaz porteur (12) est exposé à une paire d'électrodes (31, 32) formant une étincelle à travers la chambre (21) et à travers le gaz porteur. Des composés intéressants sont en interaction avec l'étincelle. Il y a diffusion d'électrons ou d'ions durant l'étincelle et après. La chambre (21) comprend une électrode de détection (26) espacée de l'étincelle. Des particules à grande mobilité (principalement des électrons) sont observées presque en même temps que l'étincelle alors que les particules ioniques à faible mobilité sont diffusées plus lentement après l'étincelle. Grâce à un gaz porteur inerte (12), des molécules métastables à haute énergie sont dispersées et libèrent de l'énergie après l'étincelle. L'énergie est obtenue de l'électrode (27) durant, immédiatement, après ou longtemps après l'étincelle. Une autre émission est obtenue à partir du spectre observé durant et après l'étincelle.
Patent CA-2082802-C (CA)
Title: Method for expressing polypeptides in cyanobacteria
Inventor: HAGIWARA HIDEAKI
IPC: C12R1/89
Filed: 1992-03-11
Granted: 2003-07-29
Abstract: A method for expressing a physiologically active polypeptide in cells of a blue-green alga by transforming the cells of a blue-green alga with a recombinant DNA containing a structural gene encoding the polypeptide, characterized in that as the recombinant DNA is used a recombinant DNA which contains a structural gene encoding the physiologically active polypeptide, the transcription initiation region of the RuBisCO gene of Anacystis nidulans located upstream of the structural gene, and the transcription termination region of the RuBisCO gene located downstream of the structural gene.      According to this method, physiologically active polypeptide can efficiently be expressed using blue-green algae.
Patent CA-2086185-C (CA)
Title: Dual stator winding connection
Inventor: HERZOG GORDON W
IPC: H02K3/28
Filed: 1992-12-23
Granted: 1999-11-16
Abstract: There is disclosed a dynamoelectric machine having a dual stator winding comprising a pair of windings each connected in a three phase star configuration from a respective neutral. The three phases of each of the pair of windings are normally displaced from each other by 30 electrical degrees. The improvement includes first and second terminals at the midpoint of each of the three phases of each of the pair of windings which terminals are normally connected to each other. This allows the dynamoelectric machine to be connected to a twelve pulse LCI source.      Alternatively, the first terminal of each three phase windings may be connected to the second terminal of its corresponding phase winding to provide cross connected windings having zero electrical degrees displacement. The line terminals of the corresponding cross connected windings may be connected to a conventional power source.
Patent CA-2087633-C (CA)
Title: Electronic exchange apparatus
Inventor: FUJITSUKA SHUJI
IPC: H04Q3/62
Filed: 1993-01-20
Granted: 1999-08-31
Abstract: An electronic exchange apparatus includes a plurality of extension circuits having terminals to which a plurality of extension terminals are connected, a memory table in which a plurality of extension numbers corresponding to the extension circuits are registered, and a control circuit for retrieving an extension number of a destination of an incaming signal from the memory table.      The electronic exchange apparatus comprises a change request detector for detecting a change request signal supplied from one of the extension terminals to request a change in contents registered in the memory table, and a memory table changing section for changing the contents registered in the memory table, based on the change request signal detected by the change request detector and information supplied from the extension terminals and representing a content to be changed.
Patent CA-2092294-C (CA)
Title: Continuous, self-contained mowing system
Inventor: COLENS ANDRE
IPC: A01B69/00
Filed: 1991-09-23
Granted: 2002-12-10
Abstract: The invention relates to an automatic, self-contained machine for continuously mowing grass. The machine is powered by means of photovoltaic cells (10) and can be wheeled (15) or tracked. A device comprising a microcomputer programmed by an algorithm allows to search for spots where the grass must be cut and to detect the boundaries of the surface to be mown. The ob-stacles (92) are detected and passed around by analysis of relative movements of an upper panel (9) comprising the photovoltaic cells (10) and a lower frame (1).
Patent CA-2095619-C (CA)
Title: A biodegradable chain bar lubricant
Inventor: NAEGELY PAUL C
IPC: C10N10/04
Filed: 1992-10-08
Granted: 2003-07-08
Abstract: A lubricant composition is described which is useful as a chain bar lubricant for chain saws. The composition comprises (A) at least one triglyceride, (B) at least one viscosity modifying additive, and (C) at least one tackifier.      Optionally, the composition may also contain (D) at least one pour point depressant and (E) at least one antiwear agent.
Patent CA-2101023-C (CA)
Inventor: GARDNER THOMAS J
IPC: A21D13/00
Filed: 1993-07-21
Granted: 1996-06-18
Abstract: A method and apparatus for treating a sheet of pastry dough to cause it to have a woven,  lattice-work appearance by cutting a plurality of polygonal openings through the sheet in a predetermined pattern with sides of each opening being aligned with sides of adjacent openings to produce aligned rows of openings and deforming the sheet in  the  portions  remaining  between  the  openings  by depressing grooves aligned with sides of the openings into the sheet to make it appear that the sheet is comprised of overlapping dough strips.
Patent CA-2101480-C (CA)
Title: Injection molding nozzle which retains a thermocouple element
Inventor: GELLERT JOBST ULRICH
IPC: B29C45/27
Filed: 1993-07-28
Granted: 2001-09-11
Abstract: An injection molding nozzle upon which a thermocouple element can be removably mounted and be self-retained in place. The nozzle has a front portion and a larger diameter rear collar portion with a thermocouple element duct therethrough. A thermocouple element bore extends rearwardly from the front end of the nozzle and a thermocouple element groove extends outwardly across the rear end from the thermocouple element duct. A front portion of a suitably bendable and retentive thermocouple element is inserted into the bore in the front end and bent to extend rearwardly to the duct through the rear collar portion. A rear portion of the thermocouple element is bent into place in the groove in the rear end. The thermocouple element securely retains itself in this position while the nozzle is being installed in the mold.
Patent CA-2102032-C (CA)
Inventor: LUM SANFORD S
IPC: H04N1/41
Filed: 1993-10-29
Granted: 1998-05-12
Abstract: ABSTRACT          The present invention relates to a method of enhancing a digital color video image comprised of separating a source pixel into individual component parts, for each component part, generating a random number having the same length as the corresponding component part, adding each random number to its corresponding component part to form resultant component parts, and combining the resultant component parts to form a destination pixel.
Patent CA-2102568-C (CA)
Inventor: CLOUTIER SYLVIE
IPC: D21H13/14
Filed: 1993-11-05
Granted: 2003-10-14
Abstract: Strong discontinuous fibres formed from polyethylene are disclosed. The fibres have a length of 1-25 mm, a fibre diameter of less than 30 microns and a handsheet zero span strength of greater than 3 kg/15 mm. The fibres may be in the form of a polyethylene pulp having a surface area of at least 4 m2/g, a Pulmac defect value of less than 3% and a handsheet zero span value of at least 3 kg/15 mm. Polyethylene sheet may be formed from the strong discontinuous fibres. The fibres and sheet may be used in blends with cellulose fibres, fillers, thixotropic agents and as synthetic paper.