baber/WOPTO huggingface dataset:
Patent CA-2019929-A1 (CA)
Title: Process for the preparation of derivatives of 1,3-dioxolane and of 1,3-dioxane
Inventor: WEBER JURGEN
IPC: B01J27/16
Filed: 1990-06-27
Abstract: Abstract of Disclosure A process for the preparation of derivatives of 1,3-dioxolane and 1,3-dioxane from a condensation of 2,2-dialkyl-3-hydroxypropanals in the form of the crude product obtained on the addition reaction of formaldehyde with 2-alkylalkanal in the presence of a tertiary amine, with a diol.
Patent CA-2020653-A1 (CA)
IPC: A61J1/05
Filed: 1990-07-06
Abstract: An autotransfusion bag is provided with semi-rigid side walls and flexible material interconnecting the side walls.          The bag is provided with spreader arms which extend across the top of the bag and across the bottom of the bag engaging retainer elements mounted on the external face of the side walls.  The spreader arms maintain the bag in an open position to permit the bag to be filled with blood.  When the bag is filled, the spreader arms may be removed to permit the bag to collapse as the blood is being reinfused to the patient.
Patent CA-2021446-A1 (CA)
Inventor: GODFRIN HUGHES
IPC: C08J9/20
Filed: 1990-07-18
Abstract: La polymérisation en suspension aqueuse d'au moins un monomère vinylaromatique est réalisée en présence, par rapport au monomère vinylaromatique, de 0,01% à 0,6% environ en poids d'au moins une cire de polyéthylène et de 0,005% à 0,1% environ en poids d'au moins un agent tensio-actif nonionique ayant une valeur HLB comprise entre 7 et 16. Matériaux obtenus à partir des perles expansibles préparées selon ce procédé de polymérisation.
Patent CA-2022225-A1 (CA)
Title: Process and facility for shearing to length steel bars coming from a rolling mill
Inventor: MANTOVAN GIANFRANCO
IPC: B23D33/00
Filed: 1990-07-30
Abstract: "PROCESS  AND FACILITY FOR SHEARING TO LENGTH STEEL  BARS COMING FROM A ROLLING MILL"                         Abstract A  process for shearing to length steel bars  coming from  a rolling mill comprises the steps of   feeding the continuous rolled product to a first collecting  chamber, which is a part of a braking/distributing apparatus which brakes  and distributes the sheared bars and comprises  a plurality of said chambers,  which are stepwise mobile in sequence,  in  phase  with  the  shearing  of  the  bars; shearing  to  length  a first bar  and  introducing  the leading end of a second bar,  following the first bar, to a  second  collection chamber; shearing to length  said second  bar  and,  by means of  the  shifting  of  said collection chambers,  discharging said first,  braked bar onto conveyor means.     A   facility  for  practicing the   above   briefly disclosed  process comprises the combination of at  least one shear (10), for shearing to commercial length the bar exiting the  rolling mill and of a  braking/distributing apparatus  (11)  for  braking  the  sheared   bars  and distributing  them onto conveyor means which perform  the task  of  sending  said bars  sheared  to  length,  while simultaneously cooling them,  to devices where bundles or bars are formed, tied and stored.     The apparatus (11) can comprise,  e g.,  a plurality of  coaxial drums (13) each provided with circumferential seats,  or  collection chambers (16) inside which  a  bar (17)  sheared by the shear (10) is received and braked by means  of braking means.  The operation of the shear  and the  rotation of the drums (13) take place in phase,  so that at each operating cycle a bar is discharged from the drums (13) onto the conveyor means.
Patent CA-2022732-A1 (CA)
Title: Oxazolo pyridine derivatives, process for their preparation and pharmaceutical compositions containing the same
Inventor: GUILLAUMET GERALD
IPC: C07D498/04
Filed: 1990-08-06
Abstract: Compounds of general formula (I):   <IMAGE> (I)  in which: R1 and R2 each represent a hydrogen atom or, with the oxygen and nitrogen, form an -O-CO-N- linkage, W represents a halogen atom or a lower alkyl or alkoxy group optionally substituted with one or more halogen atoms, such as trifluoromethyl, and m being between 0 and 3, A represents a linear or branched lower alkylene group, and Ar represents an aryl or heteroaryl group optionally substituted with one or more halogen atoms or with one or more lower alkyl, hydroxy, hydroxysulfonyloxy, lower alkoxy or aryloxy groups optionally substituted with one or more halogen atoms, such as a trifluoromethyl group, on the understanding that lower alkyl or lower alkyloxy radical is understood to mean a linear or branched alkyl group comprising from 1 to 6 carbon atom, their isomers, epimers and diastereoisomers. Medicinal products useful in the treatment of pain.
Patent CA-2025396-A1 (CA)
Title: Optical device and method
Inventor: BORRELLI NICHOLAS F
IPC: G02B6/124
Filed: 1990-09-14
Abstract: Abstract of the Disclosure This invention is directed to a method of forming optical devices composed of a photonucleable, crystalliz-able, lithium silicate glass body having at least one clear glass lens integral with and rising above at least one surface thereof, the lens being surrounded by a crystallized glass matrix, and optical devices produced by such method. The inventive method comprises subjecting the crystallized body to an ion exchange reaction wherein sodium and/or potassium ions from an external source are exchanged for lithium ions within the surface of the glass lens, the exchange reaction being conducted at a temperature of about 25°-125°C above the annealing point of the glass for a time sufficient to produce a lens having an axial height in excess of 100% greater than that of lenses produced solely by selectively crystallizing a photonucleable, lithium silicate glass body.
Patent CA-2026411-A1 (CA)
IPC: F04D25/08
Filed: 1990-09-27
Abstract: Abstract A roof mountable kitchen grease exhaust blower is constructed with hinged housing elements which can be raised for easy service access to all parts of the unit. Redundant blower drive motors are provided either of which can be easily engaged to the blower wheel in the event of failure of the other. A blower wheel drive belt is equally engageable to either drive motor and changeover from one to the other is easily and quickly made by minimally skilled personnel. The newly engaged drive motor is enabled by a power select switch at the blower control panel.
Patent CA-2026576-A1 (CA)
Inventor: SAMEJIMA SHUNICHI
IPC: C23G5/028
Filed: 1990-02-01
Abstract: A hydrochlorofluorocarbon azeotropic or azeotropic-like mixture comprising at least one member selected from the group consisting of the hydrochlorofluoropropanes 1,1-dichloro-2,2,3,3,3-pentafluoropropane and 1,1-dichloro-2,2,3,3,3-pentafluorpropane, and alcohols having from 1 to 4 carbon atoms. They are useful as a chlorofluorocarbon (CFC) alternative, and particularly as a solvent in cleaning agents.
Patent CA-2027235-A1 (CA)
Title: Intake manifold
Inventor: OGAWA SEIICHI
IPC: F02B27/00
Filed: 1990-10-10
Abstract: An intake manifold adapted for use with an engine having two intake ports for each cylinder and comprising an aluminum plenum chamber having an air inlet and air outlets twice the number of cylinders of the engine in number, and a plurality of branch pipes of wrought aluminum connected to the respective air outlets of the plenum chamber. One of the two branch pipes to be connected to the intake ports for each cylinder is larger in the length of the channel than the other branch pipe. The two branch pipes are equal in the cross sectional area of the pipe channel, or the branch pipe having the longer channel is smaller than the other branch pipe in the cross sectional area of the channel. The roughness of the inner surface of each branch pipe is up to 10 µm, preferably up to 5 µm, more preferably up to 1 µm, in terms of center line average height.
Patent CA-2031868-A1 (CA)
Title: Polyolefin resin composition
Inventor: ABE HIROOMI
IPC: C08J3/20
Filed: 1990-12-10
Abstract: ABSTRACT OF THE DISCLOSURE         A resin composition comprising (A) a thermo-plastic resin, (B) a functional compound having one or more bonds or one or more functional groups selected from the group consisting of organic groups having a non-aromatic carbon-carbon multiple bonds, oxirane groups and substituted carboxyl groups and (C) a diamino compound represented by the following general formula:                   RINH-X-NHRII   wherein RI and RII each represents a hydrogen atom or an alkyl group optionally having one or more inactive substituents, and X represents an alkylene group having 7 to 30 carbon atoms and optionally having one or more inactive substituents.
Patent CA-2033016-A1 (CA)
Inventor: CREAN THOMAS P
IPC: H04N5/14
Filed: 1990-12-21
Abstract: CONSUMER TELEVISION PROGRAM AND PHOTOGRAPH PRODUCTION STUDIO        ABSTRACT OF THE DISCLOSURE             A mobile, automated studio for self-service produc-tion of television programs or video photographs is disclosed.          The television program may be recorded on a vendible recording medium,  such as a laser disc or video cassette,  or may be simultaneously transmitted over a communication network for remote viewing or recording.  Optionally, the consumer may record selected video  images  on photographic prints.   The  studio includes an equipment pod and an adjacent recording area for accommodating at least one customer.  The equipment pod houses a  television  camera  oriented toward the  recording area,  a recording apparatus electronically connected to the camera, an automated unit for storing and handling the recording medium and delivering the recording medium to the customer at the conclusion of the recording session, a video coder/decoder and modem for transmitting video images via the communication network, a touch-sensitive control screen accessible by the customer for optional-ly selecting recordal or transmission of the program to be produced, apparatus for handling payment by the customer by cash or credit card, and a central processing unit for controlling the various operations of the studio.
Patent CA-2033141-A1 (CA)
Title: Method for the debarking of logs
Inventor: VIIKARI LIISA
IPC: B27L1/00
Filed: 1990-12-24
Abstract: ABSTRACT OF DISCLOSURE          A method for the debarking of logs is disclosed, which comprises treating the logs with enzymes to weaken the bonds between the bark and wood.  An apparatus is also disclosed for the debarking of logs, comprising a conveyor for conveying the logs to a debarker, a piping system with nozzles for spraying the logs with an enzyme solution, a device for separating the enzyme solution from the logs and conducting it back into the piping system,  and a feed device for supplying enzyme solution into the circulation system.
Patent CA-2038252-A1 (CA)
Title: Welder's helmet and photovoltaic power transmission circuit therefor
Inventor: STEIN MARC F
IPC: A42B3/00
Filed: 1991-03-14
Abstract: ABSTRACT    A welder's helmet  including a panel of solar cells responsive to light generated by a welding operation to drive a fan incorporated in the helmet structure.  The solar cells are mounted on the helmet above the viewing window and the fan is mounted in front of the mask below the viewing window.  When a welding arc is struck, the light from the torch impinges on the solar panel and generates sufficient electricity to drive the fan.  The fan forces air from the inside of the helmet outward through the  front face  in a velocity controlled stream carefully directed to prevent smoke and fumes from reaching the helmet, and to also blow the smoke away from the weld site in a particular manner so that visibility of the weld remains clear while not over-oxygenating the weld site.  As air is exhausted from the inside of the helmet outward by the fan, fresh air is drawn in around the sides to replace that which is being exhausted to cool the welder and prevent ingestion of fumes and vapors.    Three  fan speed controls are disclosed,  a variable resistance incorporated in series with the solar cell array and the fan motor, an aperture control placed in front of the solar cell array to effectively control the amount of light permitted to reach the array from the weld site,  and a mechanism to control the angle made by incident light from the weld site with the plane of the solar cells array.   Additionally incorporated into the helmet structure are spatter control devices in the form of transparent replaceable panels disposed in front of the viewing window and in front of the solar cell array.    A photovoltaic power transmission circuit is provided to process electrical energy derived from light such as that produced by the arc of an arc welder during a welding operation.    A preferred embodiment comprises an attachable air filtering unit for use with standard welding masks.
Patent CA-2038453-A1 (CA)
Title: Tire removing machine
Inventor: SCHOEN RAIMUND
IPC: B60C25/125
Filed: 1991-03-18
Abstract: TIRE REMOVING MACHINE               ABSTRACT OF THE DISCLOSURE    The tire removing machine has a resting base, a hollow support rigidly connected to the base and provided with a supporting flange for supporting motor vehicle wheels. A hollow securing shaft extends in the base and protrudes from the support, perpendicularly to the flange. A wheel centering and securing cone is anchored to the securing shaft outside the flange. A traction pin is rotatably accommodated in the shaft and extends beyond the centering cone where it ends in a traction head. A tool-holder bar with tool for mounting and removing a tire is at least temporarily coupled to the traction head.
Patent CA-2038516-A1 (CA)
Title: Collapsible bicycle with releasable ground stand
Inventor: BLANCHARD PIERRE
IPC: B62K15/00
Filed: 1991-03-18
Abstract: COLLAPSIBLE BICYCLE WITH RELEASABLE GROUND STAND    ABSTRACT OF THE DISCLOSURE           A collapsible  cycle  comprising  an  elongated  frame having a rear end and a front end,  a rear  wheel carried  by the rear end  of the  frame, a stem, a front wheel carried by one end of the stem, a brace in the general plane of  the frame  having a rear end pivoted to an intermediate portion of same frame about a brace pivotal axis transverse  to  the  frame,  first  and second connectors connecting  to the stem the front end of the frame and of the  brace respectively,  both connectors  shiftable along the stem and  allowing rotation  of the stem relative to the frame in the plane of the latter, the distance between the first connector and  the  brace  pivotal  axis  being  shorter  than the distance between the second connector and the brace pivotal  axis, whereby in the erected position of the cycle, the two connectors are at a predetermined distance apart along the  stem  and  the  latter is maintained  generally  normal  to  the  frame  by  the triangular arrangement of the interconnected stem, brace and frame; shifting of both  connectors along  the stem  in a direction away from the front wheel, and causing the connectors to take a closer distance apart  along  the  stem,  resulting  in rotation of the stem to a position  along  the  side  of  the  frame  corresponding  to the collapsed position  of the  cycle.  A releasable stand enables to support the cycle in either an  erected collapsed  position or an operative, extended, horizontal position.
Patent CA-2039399-A1 (CA)
Title: Dual functioning excipient for metal chelate contrast agents
Inventor: CHANG C ALLEN
IPC: A61K51/00
Filed: 1991-03-28
Abstract: A novel dual functioning excipient for metal chelate contrast agents is disclosed. The present excipient,    Xm[X'(L')]n,   which is the calcium or zinc salt of the calcium or zinc complex of an organic ligand, enhances safety in that it is able to scavenge both free metal ions and free organic ligand.
Patent CA-2039663-A1 (CA)
Title: Coupling for anchor rod and sleeve
Inventor: MCCARTNEY CLIFFORD A
IPC: F16B41/00
Filed: 1991-04-03
Abstract: Docket No. 1015-IR-RD     ABSTRACT OF THE DISCLOSURE     An  apparatus  to  be  inserted  into  a bore formed in a structure,  includes  a  sleeve having an aperture.  A rod is designed  to  be  inserted  into  the aperture.  The coupling maintains  the  rod substantially in axial alignment with the aperture  prior  to insertion of the sleeve into the bore.  A recess,  which  is  adapted to interfit with the rod, is dis-posed  in  the coupling to maintain the axial alignment.  The coupling  will  not  interfere  with the insertion of the rod into  the  aperture.  This insertion will cause the sleeve to be expanded into contact with a side of the bore.
Patent CA-2040371-A1 (CA)
Inventor: ASANO TERUO
IPC: A47B47/02
Filed: 1991-04-12
Abstract: A  rack  assembly  having  a  plurality  of  support  posts, brackets extending from individual  support  posts,  and  bracket rails extending between two  or  more  brackets  and  capable  of supporting goods. Each bracket rail is colored  differently  from the support posts. The bracket rails can be  distinctly  relieved against support posts, whereby the size or number of tiers of the rack can easily be recognized. Any off-position of  stored  goods can readily be founed out. The fork of a forklift  truck  can  be easily and accurately leveled to position.
Patent CA-2041528-A1 (CA)
Title: Acrylic polymers and their use in stain resistant polyamide textile products
Inventor: ALLEN ADRIAN S
IPC: D06M15/263
Filed: 1991-04-30
Abstract: ABSTRACT       Acrylic Polymers and their use in Stain Resistant Polyamide Textile Products Addition  polymers  suitable  for  imparting  stain resistance to nylon carpets and other polyamide products are formed of styrene or other ethylenically unsaturated monomer containing cyclic hydrocarbon groups, sodium vinyl sulphonate or other ethylenically unsaturated strong acid monomer, and ethylenically unsaturated weak acid monomer that is preferably acrylic acid.   The proportions of the monomer are, respectively, 7 to 50%, 1 to 20% and 40 to 90% by weight.
Patent CA-2041723-A1 (CA)
Title: Fiber-optic piezoelectric devices
Inventor: JEN CHENG-KUEI
IPC: G01S7/523
Filed: 1991-05-02
Abstract: Abstract of the Disclosure Efficient, simple, miniature and economical piezo-electric and ultrasonic devices employing optical fibers coated with lead-zirconate-titanate (PZT) thin piezoelectric and ferroelectric films are described.  The PZT thin films are fabricated chemically by a sol-gel method.   Optical fibers can be dipped into the PZT solution, and followed by an annealing and an electric poling process in order to achieve good piezoelectricity in the coated PZT films.  This coating process can be devised as an on-line method and thus coating length can be larger than meters.  Due to the long coating length,  high piezoelectricity, miniature and flexible nature, devices using optical fibers may be used for medical, telecommunication and sensor applications.
Patent CA-2045098-A1 (CA)
Inventor: HOLM DAVID R
IPC: B62D25/10
Filed: 1991-06-20
Abstract: A hood for a powered vehicle having a top piece and a bottom piece coupled to form a chamber through which air passes to the power source's cooling system.  The hood is made by the injecting colored plastic into a mold.  An opening is formed between the top piece and the side portions of the bottom piece through which air passes to enter into the chamber.  Louvers are also formed in the top piece through which air passes to enter the chamber.
Patent CA-2045656-A1 (CA)
Title: Trenching apparatus
Inventor: CAMILLERI PAUL A
IPC: E02F5/14
Filed: 1990-01-29
Abstract: Propulsion apparatus (10) is disclosed for urging a trenching arm (12) forward against the advancing face of an elongate trench be-ing dug by the trenching arm. The propulsion apparatus (10) includes a propulsion member (22) which is engageable with the base wall of the trench such that the trenching arm (12) may be urged forward relative to the engaged propulsion member (22). The propulsion member (22) may then be withdrawn from engagement with the base wall and re-tracted towards the trenching arm (12) before commencing a further propulsion cycle. The propulsion member (22) is also operable to coop-erate with the trenching arm (12) in excavating a starting slot at the be-ginning of a new trench.
Patent CA-2045788-A1 (CA)
Title: Cache arrangement for file system in digital data processing system
Inventor: RAMAKRISHNAN KADANGODE K
IPC: G06F12/08
Filed: 1991-06-27
Abstract: Abstract of the Disclosure A method for caching information needed by application programs from a secondary storage in which the cache memory is organized in multiple levels, each level having multiple entries, the entries of each level receiving information of a predetermined category, each entry being accessible independently.  Links are defined between entries of one level of the cache memory and entries at another level of the cache memory, the links corres-ponding to information relationships specified by a user of information stored in the secondary storage.  The use and reuse of the cache entries is based on the links.  In response to a request to a file system from an application for needed informa-tion, the needed information is fetched into the cache, and in connection with fetching the needed information, other information is prefetched from the system of files which is not immediately needed.  Quotas are established on information which may be fetched from a secondary storage into the cache, the quotas being applicable to file contents within a file and to the number of files within a directory.  The fetching of information from secondary storage into the cache is regulated based on the quotas.      Upon a request from an application program to open a file, an entry is created in a cache corresponding to the file, the entry including file header information.  The file header information is retained in the cache so long as the file remains open, whether or not any file contents of the file remain in cache.  The entries of three level of the cache respectively receive directory infor-mation, file header information, and file contents information.
Patent CA-2045869-A1 (CA)
Title: Fusion proteins with immunoglobulin portions, the preparation and use thereof
Inventor: LAUFFER LEANDER
IPC: C07K1/22
Filed: 1991-06-27
Abstract: The invention relates to genetically engineered soluble fusion proteins composed of human proteins not belonging to the immunoglobulin family, or of parts thereof, and of various portions of the constant region of immunoglobulin molecules. The functional properties of the two fusion partners are surprisingly retained in the fusion protein.
Patent CA-2049233-A1 (CA)
Title: Surgical device
Inventor: SJOSTROM DOUGLAS D
IPC: A61B17/16
Filed: 1991-08-15
Abstract: A surgical device including a handpiece adapted to receive a surgical tool is provided wherein the handpiece a motor driven drive shaft for rotating the tool about an axis, a static seal element for sealed to the motor assembly, and dynamic seal element sealed to the drive shaft, the seal elements having mating sealing portions defining a face seal in a surface transverse to the axis of rotation of the drive shaft.
Patent CA-2050802-A1 (CA)
Title: Dump truck stone slinger
Inventor: GEROW LEONARD
IPC: B60P1/16
Filed: 1991-09-06
Abstract: ABSTRACT     A stone slinger option for a standard dump truck includes a swing arm pivotally connectable to the truck's chassis, an elongated frame pivotally connected to the swing arm and mounting an endless conveyor belt therein, and drive means for independently moving the swing arm and the frame. The frame can be moved from a stowed travel position adjacent the truck's chassis, below the dump body, to a rearwardly extending position in which it can receive material from the dump body for delivery to a dump site remote from the truck. The truck can operate in its standard dump mode or as a stone slinger, reducing costs at construction sites since additional, specialized stone slinger delivery vehicles will not be required.