baber/WOPTO huggingface dataset:
Patent CA-1145168-A (CA)
Inventor: BOYER ARTHUR L
IPC: G02B27/42
Filed: 1981-07-24
Granted: 1983-04-26
Abstract: A B S T R A C T Method and apparatus for producing a fringe pattern corresponding to height and depth gradients of an illuminated object with the fringe pattern lines used to define edges of stacked sheets provided as a filter for X-ray dosage tailoring.  A camera is provided to produce the fringe pattern on a photographic film using a compact arrangement of light sources, lenses and gratings all within a convenient housing facilitating use yet at the same time providing sufficient resolution through separation of projection and imaging optics.  A laser range finder is additionally provided to insure placement of the object to be X-rayed, typically a portion of the human torso, at a standard distance so that the ultimately produced X-ray filter will be properly sized.  The filter is produced by cutting a set of lead sheets with edges corresponding to each of the separate contour lines in the exposed and developed film receiving the fringe pattern.  Projection techniques are employed in order to size the film record of fringe patterns to a size appropriate for use as an X-ray filter, typically less than life size.
Patent CA-1181796-A (CA)
Inventor: SHERMAN ELI H
IPC: H05B41/04
Filed: 1981-08-12
Granted: 1985-01-29
Abstract: ABSTRACT OF THE DISCLOSURE      A generator for the starting and thereafter maintaining energization and operation of a load which has a relatively high impedance during starting and a substantially lower impedance after starting and during operation thereof.  The load may be an ionic conduction lamp including a phosphor excitable lamp in the nature of a fluorescent lamp, or electroluminescent lamp,or vapor lamp.   The generator includes a mechanism for generating electrical power with a relatively high voltage and impedance so as to match the relatively high impedance of the load before starting and generization of electrical power of a substantially lower voltage and impedance so as to match the lower impedance of the load during the energization and operation of the load.  The mechanism for generating the electrical power may be an inductive member, such as a coil, and a solid state element, such as a transistor, to develop a voltage over the coil.  The coil may be coupled to the lamp through some agent developing a capacitance, e.g., a conductor with a capacitor or stray capacitance between the lamp and the coil.          Further a tap intermediate the ends of the coil may be coupled to the load.  The capacitance which couples the generator to the lamp before starting is effectively electrically inoperable and out of the circuit after starting of the load.  The agent developing the capacitance is located such that the full voltage developed across the coil is delivered to the load during starting, but after starting and during operation only a portion of the voltage de-veloped between one terminal and the tap of the coil is used to drive the load.  The generator thereby eliminates the need of a conventional ballast and starting mechanism.  In this way, energi-zation of the lamp can be maintained with substantial energy savings compared to prior art ballasts used with ionic conduction lamps.  Further energy savings are achieved by generating current and voltage pulses for operating the lamp where the voltage pulses have a greater decay rate to a zero level than the current pulses which have a more gradual decay.  Thus, the lamps may be driven by an electric signal where the current pulses are driven by a sub-stantially reduced voltage level for a substantial period of time.
Patent CA-1171399-A (CA)
Inventor: CONOLLY ROBERT C
IPC: B02C/
Filed: 1981-08-26
Granted: 1984-07-24
Abstract: ABSTRACT OF THE DISCLOSURE           The invention relates to a beater, also known as a hammer, for use  in vertical shaft impact crushers, also known as fiberiser mills, to crush asbestos ore and release the asbestos fibers.  The hammer comprises an elongated shaft having a coupling end and a free end opposite the coupling end, and a wear resitant head adjacent the free end of the shaft and extending along a major portion there-of towards the coupling end.  This two-piece construction enables one to select for the shaft a material providing the necessary tensile strength and elongation independently of the material used for the wear resistant head to provide the necessary hardness and wear resistance required for the hammer head.
Patent CA-1170115-A (CA)
Inventor: ELERT KARL
IPC: B21D51/26
Filed: 1981-09-23
Granted: 1984-07-03
Abstract: APPARATUS FOR FORMING A DOMED                BOTTOM IN A CAN BODY Abstract of the Disclosure An apparatus for forming an inward dome in the bottom wall of a metal can body having a beveled peri-pheral edge bordering the bottom wall.  The apparatus includes a housing which supports a convex die member adapted to engage the bottom wall of the can body to form the dome.  A pressure ring is disposed radially outward of the die member and is mounted for sliding movement with respect to the die member.  The pressure ring is provided with a beveled surface which is adapted to be engaged by the beveled edge of the can body to prevent deformation of the bevelled edge as the dome is formed in the bottom wall.  The pressure ring is con-nected to an air spring which provides uniform resist-ance to movement of the ring relative to the die member. In addition, the housing and die member are connected through a second air spring to a fixed support and after the dome has been formed, continued axial movement of the can body will result in compression of the second air spring to insure full formation of the dome.
Patent CA-1174475-A (CA)
Inventor: RASTAS JUSSI K
IPC: C22B19/00
Filed: 1981-09-24
Granted: 1984-09-18
Abstract: ABSTRACT OF THE DISCLOSURE            A hydrometallurgical process for the treatment of a raw material which contains oxides and ferrites of zinc, copper and cadmium is disclosed, wherein the raw material is neutral leached by means of a sulfuric-acid-bearing solution to leach the oxides without substantial dissolving of the ferrites, a ferrite-bearing residue is separated, and a sulfuric-acid-bearing or ferrisulfate-bearing solution is mixed with the residue in order to leach the ferrite and to precipitate the iron in the form of jarosite in the presence of alkali or ammonium ions under atmospheric conditions at 80-105°C, and the solid phase is separated from the solution. The sulfuric-acid-bearing or ferrisulfate-bearing solution is added to the ferrite-bearing residue in such an amount that approximately 50-60 % of the ferrite dissolves and its iron is precipitated as jarosite, and the slurry of the solid phase is treated at such elevated pressure and temperature that the zinc of the solid phase is converted to zinc sulfate and the iron to hematite in accordance with the following reaction:            (5)   3ZnFe2O4(s) + 2A[Fe3(SO4)2(OH)6](s) ? 3ZnSO4(aq) +       A2SO4(aq) + 6Fe2O3(s) + 6H2O(aq)     (A=K, Na, NH4)
Patent CA-1170938-A (CA)
Inventor: SEGAL DAVID
IPC: A61B17/72
Filed: 1981-10-16
Granted: 1984-07-17
Abstract: ABSTRACT OF THE DISCLOSURE           Fixation of a long bone is accomplished by drilling a small opening into the medullary cavity, inserting a deflated flexible bladder into the medullary cavity through the opening, inflating the bladder with sterile air through an opening accessible outside the bone, sealing the opening, unsealing the opening after the fracture has healed, removing the bladder and then filling the opening.  The flexible bladder of the present invention is made of material from the group consisting of natural rubber-like material, synthetic rubber-like material and flexible plastic.  The bladder also has an opening therein for the admission of an inflating fluid.
Patent CA-1180863-A (CA)
Inventor: BECKER JOSEF
IPC: B05D5/06
Filed: 1981-11-05
Granted: 1985-01-15
Abstract: ABSTRACT OF THE DISCLOSURE:         A process for the production of decorated molded articles wherein a base article is produced by casting and/or compression molding from a hardenable substance containing a minor amount of a thermosetting synthetic resin and a hardener therefor, and a major amount of at least one inert filler, and, optionally, accelerators, colorants and other auxiliary materials and by providing the article with a surface layer of hardenable lacquer resin.
Patent CA-1170335-A (CA)
Inventor: FUNK GARY L
IPC: G05D9/12
Filed: 1981-11-13
Granted: 1984-07-03
Abstract: NONLINEAR CONTROL OF LIQUID LEVEL Abstract of the Disclosure In a process in which liquid flows to a vessel and is then withdrawn from the vessel, method and apparatus is provided for implementing nonlinear liquid level control by providing a variable set point to a conventional level controller. The variable set point is a nonlinear function of the actual liquid level in the vessel. The variable set point enables the vessel to absorb disturbances in the flow rate of the liquid flowing to the vessel while the actual liquid level in the vessel remains between a desired high and low limit thus providing a smooth flow of liquid from the vessel.
Patent CA-1172624-A (CA)
Inventor: FOSTER DEREK
IPC: B66D1/38
Filed: 1981-11-18
Granted: 1984-08-14
Abstract: ROGERS, BERESKIN & PARR                   C A N A D A     ABSTRACT OF THE DISCLOSURE           A power winch has a spool, a drive for rotating the spool to collect windings of cable, and a level wind to provide orderly placement of the windings.   The point of receipt of cable on the spool is varied by a cable guide supported by the framework of the level wind and driven in a reciprocating fashion parallel to the axis of the spool.          The cable guide is timed from the spool drive to advance a fixed distance with each rotation of the spool.  Ideally the fixed distance corresponds to the diameter of the cable, but in practice the cable diameter may vary significantly. In such a context the invention provides a regulator which permits the level wind to accommodate variations in cable diameter.  The regulator comprises an electic motor and a gear assembly which combines rotational power received from the electric motor and the spool drive and applies the rotational power so combined to the drive assembly and the cable guide to obtain the reciprocating motion.  The spool drive remains the primary source of rotational power (effectively driving and timing the cable guide), and the electric motor is selectively activated to accelerate  or retard the motion of the cable guide in response to observed or detected irregularities in winding placement, particularly irregularities occasioned by variations in cable diameter.
Patent CA-1184297-A (CA)
Title: Record carrier having an optically readable  information structure
Inventor: DIL JAN G
IPC: G11B7/007
Filed: 1982-01-07
Granted: 1985-03-19
Abstract: ABSTRACT:                   A record carrier is described in which infor-mation is recorded in an optically readable information structure of track-wise arranged information areas which alternate with intermediate areas. The adjacent infor-mation track portions are situated at different levels, so that the information density can be increased sub-stantially.
Patent CA-1167743-A (CA)
Inventor: LAMPIETTI BERNARD P
IPC: B21F3/04
Filed: 1982-01-13
Granted: 1984-05-22
Abstract: ABSTRACT OF THE DISCLOSURE        A cyclically operable spring coiling machine includes a pair of feed rolls for intermittently advancing wire longi-tudinally to a coiling station at an upper portion of a vertical front frame of the machine.  A coiling arbor and a coiling tool at the station cooperatively form leading end portions of the wire to a coil spring configuration and an improved cut-off means severs the coiled leading end portions of wire to provide individual coil springs.  The improved cut-off means includes a pair of tool holders on opposite sides of the coiling arbor movable toward and away from the arbor and wire coiled thereabout and generally in opposition to each other.  The holders are employed selectively depending on the hand of the spring being coiled and are respectively mounted on pivot shafts extending rearwardly through the front frame of the machine and geared together at rear end portions.  A continuously rotating horizon-tal shaft forming a part of the coiling machine drive mechanism has a front end portion projecting through the vertical front frame of the machine.  An eccentric on the front end portion of the shaft drives an oscillable arm which in turn has a pivotal connection with a lowermost tool holder through an adjustment means.  The adjustment means comprises complementary threaded members operable to adjust the movement of the tool holders and thus to vary throw of a cut-off tool thereon toward and away from the coiling arbor.
Patent CA-1167621-A (CA)
Inventor: MATTHEWS WESLEY D
IPC: E04F11/025
Filed: 1982-02-05
Granted: 1984-05-22
Abstract: ABSTRACT OF THE DISCLOSURE   This application discloses a modular stairway system for circular structures or other structures having non-linear walls.  The invention comprises a plurality of first stringer means with a plurality of first connecting means integral to said first stringer means for joining the first stringers, a plurality of second stringer means horizontally spaced from and parallel to the first stringer means with a plurality of adjust-able second connecting means integral to said second stringer means for adjustably joining the second stringers such that the first and second stringers conform to the curvature of the structure.  A plurality of stairs are horizontally interposed between the first and second stringers, and a stair mounting means for securing the stairs to the first and second stringers are provided.  Also provided are mounting means securing the first stringers to the structure and for supporting the second stringer to the structure, whereby there is obtained a revers-ible sectional stairway system which can be easily installed on circular structures or other structures having non-linear walls.
Patent CA-1171325-A (CA)
Inventor: MIZUNO CHIAKI
IPC: C09D5/23
Filed: 1982-03-02
Granted: 1984-07-24
Abstract: ABSTRACT OF THE DISCLOSURE A magnetic recording medium comprising a non-magnetic flexible base and a magnetic recording layer formed thereon which is mainly composed of fine ferro-magnetic particles and a binder.  The binder contains both a vinyl chloride/vinyl acetate/vinyl alcohol copolymer and a vinyl chloride/vinylidene chloride copolymer.
Patent CA-1187339-A (CA)
Inventor: LEIKERT KLAUS
IPC: F23Q9/00
Filed: 1982-03-12
Granted: 1985-05-21
Abstract: ABSTRACT OF THE DISCLOSURE          A method is provided herein for igniting a pulverized-coal pilot-burner flame for a pulverized-coal annular burner flame having an internal back flow region, with the ignition energy being introduced centrally into the interior of the back flow region of the pulverized-coal annular burner flame.  To ignite the pilot-burner flame during the process of the initial ignition, at constant primary and secondary air flow and an air coefficient ?  = 1.1 to 0.4, one or more times a powder-laden air/powder mixture is supplied to the pilot-burner at a powder-laden air/powder weight ratio of 1.0 to 0.2.          After ignition has been effected, a specified coal flow is continuously added to the pilot-burner flame at the fixed air coefficient ? = 1.1 to 0.4.  This procedure minimizes the initial ignition energy and, at the same time, assures a reliable and stable ignition.
Patent CA-1188524-A (CA)
Inventor: TAYLOR JACK R
IPC: F23R3/06
Filed: 1982-04-22
Granted: 1985-06-11
Abstract: LOW NOx COMBUSTOR                   ABSTRACT OF THE DISCLOSURE    A combustor having an annular first stage, a generally cylindrically-shaped second stage, and an annular conduit communicably connecting the first and second stages. The conduit has a relatively small annular height and a large number of quench holes in the walls thereof such that quench air injected into the conduit through the quench holes will mix rapidly with, or quench, the combustion gases flowing through the conduit. The rapid quenching reduces the amount of NOx produced in the combustor.
Patent CA-1191475-A (CA)
Inventor: FELLNER THEODORE F
IPC: B65G47/51
Filed: 1982-05-17
Granted: 1985-08-06
Abstract: ABSTRACT OF THE DISCLOSURE      This invention relates to a power-driven conveyor system for transporting and accumulating a plurality of items along a path of movement from a source to a destination.   The system includes a horizontally oriented section for accumulat-ing the items along the path and an apparatus for transporting the items therealong.  The apparatus may be either a plural-ity of parallel, spaced-apart endless belts or a plurality of conveying sections interconnected together to form an endless carrier.  Each section of the carrier may constitute itself a device for directly carrying one of the items.    The invention provides an effective horizontal accumu-lator for items on a production or an assembly line operating at a relatively high speed.  The accumulator operates on the FIFO principle so that, upon a malfunction of either upstream or downstream equipment, dated or otherwise sequentially marked items are stored in such a manner that the first item into the system is the first item to come out.    Additionally, the invention provides an effective horizontal accumulator for items with irregular shapes or of fragile nature.  Production line backpressure does not exist so that the risk of locking or wedging of items being transported is reduced.  There is also a reduced risk of breakage or quality damage.    Additionally, the invention provides an effective horizontal accumulator for items requiring a particular orientation as delivered by the source.  The items are maintained and delivered according to the needs at the des-tination.
Patent CA-1218910-A (CA)
Inventor: HAYES NORMAN J
IPC: C04B24/22
Filed: 1982-08-05
Granted: 1987-03-10
Abstract: ABSTRACT OF THE DISCLOSURE A composition of matter, useful as a dispersing agent, and method of making thereof.  The composition comprises certain alkali metal salts of a condensation product of naphthalenesulfonic acid and formaldehyde. The composition of matter is useful for pigment dispersions, emulsion polymeri-zation, leather tanning, water treatment, cement fluidization and many other applications.  The composition remains stable when stored in liquid form at low temperatures.
Patent CA-1196605-A (CA)
Inventor: SCHNEIDER RUDOLF
IPC: B23H1/08
Filed: 1982-11-15
Granted: 1985-11-12
Abstract: Abstract In swinging wire guides for the electroerosive finishing of generally conical surfaces, the problem exists of maintaining reliable automatic coaxial positioning of the guide axes according to the particular angular position of the wire electrode in the workpiece finishing zone.  As a solution, the wire guides, supported for universal movement on support elements, are joined by a coupling device, which has a guide member similarly supported in the support elements. The latter is set by relative movement of the wire guides to the desired angular position of the wire guides.  Through swinging coupling mechanisms the angular position of the guide member is transmitted to the wire guides.  These coupling mechanisms preferably incorporate a parallelogram linkage including a torsionally rigid member for the trans-mission of two perpendicular swinging movement components from the guide member to the wire guides, so as to provide total biaxial forced coupling of the guide member to the wire guides.
Patent CA-1193045-A (CA)
Inventor: DIETHELM HERMANN
IPC: C08F4/00
Filed: 1982-12-21
Granted: 1985-09-03
Abstract: Abstract A mixture consisting of a polymaleimide and a co-polymerisable monomer or a prepolymer formed from these two compounds contains, as the polymerisation catalyst, an ethane which is substituted by aromatic groups and hydroxyl groups or halogen such as benzpinacol. The mixture is stable on storage and heat-curable.  It can be cured, while at the same time being shaped to give mouldings, sheet-like structures, laminates, adhesive bonds or foams, for example by casting or compression moulding.
Patent CA-1202022-A (CA)
Inventor: OMURA SATOSHI
IPC: A23K20/195
Filed: 1983-02-23
Granted: 1986-03-18
Abstract: ABSTRACT 20-Amino derivatives of tylosin, and like macrolides, are active against bacteria and Mycoplasma.
Patent CA-1197145-A (CA)
Inventor: PARMENTIER JAN A
IPC: B63H9/06
Filed: 1983-02-23
Granted: 1985-11-26
Abstract: ABSTRACT OF THE DISCLOSURE         A sail batten, seen in transverse sectional view, con-sists of several adjacent cavities for receiving close-fitting inserts.  In this manner the stiffness of the batten can be changed gradually, because the inserts in the cavities have a different length.  The rod-like inserts are substantially con-stant in cross sectional dimension throughout their length and consequently are easy and cheap to manufacture.
Patent CA-1228255-A (CA)
Title: Self-attaching fastener and method of securing same  to sheet material
Inventor: SAWDON EDWIN G
IPC: B23P19/06
Filed: 1983-03-28
Granted: 1987-10-20
Abstract: ABSTRACT OF THE DISCLOSURE          An assembly is disclosed having a simple, standard fastener secured to sheet material such as sheet metal. A support strap is integrally formed in an offset relationship with the sheet material, and opposite sides of the fastener are deformed to interlockingly engage the remainder of the sheet material. A method and apparatus are also disclosed for securing the fastener to the sheet material in substantially one operation, including alternate manual and automatic means for feeding fasteners to such apparatus.
Patent CA-1196137-A (CA)
Inventor: KOZAK HENRY A
IPC: C09D5/08
Filed: 1983-03-30
Granted: 1985-10-29
Abstract: TWO-COMPONENT COATING COMPOSITION FOR RUSTY STEELS   Abstract A two-component coating composition comprises a Component A and Component B.  Component A contains an undiluted liquid polyglycidyl ether of a bisphenol, having an epoxy equivalent weight of 170-200, and an aluminum paste.  Component B contains a polyamide resin and a fatty diamine salt.  One or both of Components A and B also contains a coumarone-indene resin having a softening point between 40°F (4°C) and 60°F (15°C).
Patent CA-1195312-A (CA)
Inventor: HEINERMAN JACOBUS J L
IPC: C07C5/27
Filed: 1983-04-06
Granted: 1985-10-15
Abstract: A B S T R A C T     The activity of nickel synthetic mica-montmorillonite (Ni-SMM) for hydrocarbon conversions (e.g. cracking and isomerization) is improved by an after-treatment with a releasable active halogen other than fluorine, preferably with hydrochloric acid. Preferably the catalyst contains palladium.
Patent CA-1185070-A (CA)
Title: Process for rapid conversion of fluoroanhydrite to  gypsum
Inventor: PALMER JAY W
IPC: C04B11/02
Filed: 1983-04-11
Granted: 1985-04-09
Abstract: Process for Rapid Conversion of Fluoroanhydrite to Gypsum Abstract of the Disclosure A process for making an industrially usable gypsum from fluoroanhydrite in which fluoroanhydrite is contacted with a fluid reaction medium slurry containing soluble sulfate ions and a substantial proportion of small gypsum seed crystals to rapidly hydrate a large proportion of the fluoroanhydrite to a coarser, substantially pure gypsum. The slurry is clarified to separate coarse purified gypsum reaction product, and the reaction medium is reconstituted and recycled containing gyp-sum crystals less than the desired reaction product size and constituting about 50-90% of the total solids of the recon-stituted fluid reaction medium.