baber/WOPTO huggingface dataset:
Patent CA-1143144-A (CA)
Inventor: KANE GARY
IPC: B65G53/16
Filed: 1980-07-15
Granted: 1983-03-22
Abstract: ABSTRACT                      DUSTING APPARATUS      Apparatus for dusting articles such as electrical cables with a powder such as talc, to prevent the art-icles sticking together, comprises means for agitating powder in a chamber and means for conveying powder-laden air from the chamber to a dusting nozzle.      For efficient dusting of an article, it is impor-tant that a constant uniform flow of powder-laden air is conveyed to the dusting nozzle.      A fluidized bed of dusting powder is created by a fan (22) creating an air flow up through a permeable screen (21).  A conveying nozzle (24) receives some of the air flow, being positioned close to the screen, and comprises  a convergent portion (36) which accelerates the flow of powder-laden air to transport it to a dis-charge portion (30) of the nozzle.
Patent CA-1150078-A (CA)
Title: Method and arrangement for determining the  velocity of a vehicle
Inventor: DIJKMAN MARCELLINUS F H
IPC: G01V3/11
Filed: 1980-07-31
Granted: 1983-07-19
Abstract: ABSTRACT "Method and arrangement for determining the velocity of a vehicle".     With vehicle presence detectors which utilize an inductive loop arranged in the road surface, the presence of a vehicle over the loop is detected by, for example, measuring the frequency variation of an oscillator whose inductive loop is the frequency-deter-mining element. If the velocity of the vehicle must be determined by means of two of these detectors which are arranged at a predetermined distance from one another in the travelling direction, the problem is encountered that the presence of the vehicle can indeed be determined in a reliable manner but that the determination of the instants at which the vehicle activates the loops is relatively inaccurate, so that the velocity derived from these instants is also in accurate. According to the in-vention a first measuring value is measured for each detector for a first measure time interval in which the measuring value exceeds a response threshold and a second measuring value is measured for a predetermined second measuring time interval shifted a predetermined period of time relative to the first measuring time interval, the measuring value in the second measuring time interval being below the response threshold. The instant at which each of the detectors is activated is determined by inter-polation between the first and the second measuring value.
Patent CA-1149036-A (CA)
Title: Flame proof cable end seal with tortuous path  between mating members
Inventor: HUTCHISON JOHN B
IPC: H02G15/04
Filed: 1980-08-07
Granted: 1983-06-28
Abstract: ABSTRACT                  Sealing Cables and Conduits A flameproof cable or conduit seal includes a main gland member and a tubular inner member.  These have mating annular surfaces and shaped to form a tortuous path between them when assembled; this forms the whole or part of a flameproof path between the members.
Patent CA-1142009-A (CA)
Inventor: DAOUST ALBERT JR
IPC: E02D29/14
Filed: 1980-09-02
Granted: 1983-03-01
Abstract: ABSTRACT OF THE DISCLOSURE           A dam structure including a water filled torus of flexible impervious material having a diameter greater than a typical manhole and a membrane extending across the central opening defined by the torus, the dam being easily portable and adapted to sit on a manhole when  the case of a flood or spill so as to prevent seepage into the manhole.
Patent CA-1139412-A (CA)
Title: Light emitting diodes with high external quantum efficiency
Inventor: SPRINGTHORPE ANTHONY J
IPC: H01L33/38
Filed: 1980-09-10
Granted: 1983-01-11
Abstract: LIGHT EMITTING DIODES WITH HIGH EXTERNAL QUANTUM EFFICIENCY     Abstract of the Disclosure A surface emitting light emitting diode (LED) has a reflecting element to redirect light emitted away from the light emitting region towards an exit window.  The LED bottom contact is formed over the reflecting element and a current confining path is set up within the LED to funnel current between the top and bottom contacts around the reflecting element and through the light emitting region.     -i-
Patent CA-1139331-A (CA)
Inventor: STOJEK DIETER
IPC: F16J15/34
Filed: 1980-10-09
Granted: 1983-01-11
Abstract: ABSTRACT OF THE DISCLOSURE A centrifugal pump seal includes a stationary sliding ring urged by a spring against a counter ring. The  sliding  ring  has  a  filter  ring  housed  therein radially outside of its flat sealing surface.  The ring is waterproof and porous to trap grains while enabling water  to  pass  therethrough  and  lubricate  the  sealing surface.
Patent CA-1110254-A (CA)
Inventor: BRENNAN THOMAS M
IPC: A23L27/10
Filed: 1980-10-24
Granted: 1981-10-06
Abstract: A B S T R A C T         The preparation of gamma-pyrones, by a process which comprises reacting a furfuryl alcohol with at least two equivalents of a halogen-containing oxidant, selected from chlorine, bromine, bromine chloride, hypochlorous acid, hypobromous acid or a mixture thereof, and heating the resulting 4-halo-dihydro-pyran intermediate until hydrolysis is substantially complete.
Patent CA-1149195-A (CA)
Inventor: LAPOINTE JOSEPH A
IPC: G01N1/20
Filed: 1980-12-17
Granted: 1983-07-05
Abstract: SAMPLE SPLITTER                 ABSTRACT OF DISCLOSURE            A sample splitter is formed by a chute that is sloped towards its discharge end and is oscillated back and forth on a horiontal path that is substantially perpendicu-lar to the axial centre line of the chute.  The chute itself is substantially symetrical on opposite sides of the axial centre line and the walls are sloped upward so that the ma-terial forming the sample to be split moves along the chute with a sliding or rolling action back and forth across the axial centre line of the chute without significant bouncing of the discrete pieces of the material.  An elongated V-shaped plow is positioned at the discharge end of the chute with the apex of the plow forming a substantially straight line that is in axial alignment with the centre line of the chute at the mid point of the oscillation of the chute. The oscillation motion of the chute causes the material of the sample to slide down the chute and to be projected off the discharge end on one side or the other of said apex of said plow.
Patent CA-1150557-A (CA)
Title: Method and apparatus for selective positioning of  spectral filter during exposure control
Inventor: JOHNSON BRUCE K
IPC: G03B7/16
Filed: 1980-12-30
Granted: 1983-07-26
Abstract: ABSTRACT OF THE DISCLOSURE Method and apparatus usable for automatically controlling exposure of a photographic film by evaluating selected spectral scene light frequencies during certain ambient light portions of an exposure interval and evaluating additional spectral frequencies during a flash portion of the interval.
Patent CA-1150925-A (CA)
Title: Thermoforming process
Inventor: DANFORTH RICHARD L
IPC: B29C51/00
Filed: 1981-03-19
Granted: 1983-08-02
Abstract: Abstract of the Disclosure The present invention comprises an improved process for manufacturing molded articles by thermoforming crystalline polymer sheets, which improvement comprises thermoforming said sheets at a temperature between the melting point of said crystalline polymer and 60°C above said melting point, wherein said sheets have a thickness greater than about 0.1 millimeters and are produced by extruding a mixture of about 45 to 96 percent by weight of a crystalline polymer and about 4 to about 55 percent by weight of a block copolymer additive selected from the group consisting of non-hydrogenated monoalkenyl arene-conjugated diene block copolymers and selectively hydrogenated monoalkenyl arene-conjugated diene block copolymers.  Such molded parts exhibit a capability to form more complex moldings and an improved impact strength, compared with the known crystalline polymers.
Patent CA-1160220-A (CA)
Inventor: KARRER FRIEDRICH
IPC: C08G69/00
Filed: 1981-03-26
Granted: 1984-01-10
Abstract: ABSTRACT OF THE DISCLOSURE         Compounds of the formula I               I     in which m is 0 or 1, n is 1 or 2, X is -OH, -OR3 or -NR4R5, R is H or CH3, R1 is an n-valent radical, R2 to R5 are monovalent radicals or hydrogen and Z is a divalent hydrocarbon group, and also salts of these compounds, are valuable light stabilisers for organic materials, especially for polymers.  The compounds of formula I can be prepared from the corresponding 4-sec.- aminopiperidines by reaction with cyclic dicarboxylic acid anhydrides and appropriate further re-actions.
Patent CA-1172022-A (CA)
Inventor: MAGUIRE EDWARD A
IPC: C30B33/00
Filed: 1981-04-08
Granted: 1984-08-07
Abstract: METHOD OF FORGING SPINEL DOMES     Abstract A method of forging spinel into complex shapes in which a spinel plate is placed in a mold while the spinel plate is heated, in an atmosphere of helium, to a temperature below its melting point and above its solid two phases transition point that allows plastic deformation to take place.  Forging stresses well above the yield point of the spinel are applied to the plate by the mold to reduce the forging time.
Patent CA-1155861-A (CA)
Inventor: PETERSON MARVIN L
IPC: C07D307/36
Filed: 1981-04-28
Granted: 1983-10-25
Abstract: TITLE Preparation of Furan Compounds ABSTRACT      Furan compounds are prepared by converting butenediols, using a redox system which is an aqueous solution containing copper having an average oxidation state of between 1 and 2, a solubilizing agent for Cu+1 ions, and 0.05-2.00 moles per liter of hydrogen ions.
Patent CA-1116189-A (CA)
Inventor: LATIMER JOHN P
IPC: E02F3/88
Filed: 1981-05-08
Granted: 1982-01-12
Abstract: A STEERABLE OCEAN FLOOR DREDGE VEHICLE            ABSTRACT OF THE DISCLOSURE      Disclosed is a dredging system designed and adapted to be towed along the ocean floor via a surface vessel connected thereto by a tow line.  The dredge system includes a dredge vehicle, lower tow connector means secured to the dredge vehicle, and positioning means for pivotally and telescopically securing the lower tow connector to the tow line including a tow-line coupling.  A first and a second longitudinally reciprocally movable steering linkage means extends between the tow-line coupling and opposing first and second sides of the dredge vehicle.  Means are provided for simultaneously but oppositely shortening and lengthening the first and second steering linkages.          Thus, the dredge vehicle can be skewed in a first direction relative to the tow line by shortening the first steering linkage, while simultaneously lengthening the second linkage, and thus pulling the first side of the dredge vehicle towards the coupling, and can be skewed in the opposite direction relative to the tow line by shortening the second steering linkage while simultaneously lengthening the first linkage, and thus pulling the second side of the dredge vehicle towards the coupling.
Patent CA-1156161-A (CA)
Inventor: LANKSTON ROBERT J
IPC: F16L55/16
Filed: 1981-05-14
Granted: 1983-11-01
Abstract: TEMPORARY PIPELINE CAPPING UNIT    AND METHOD OF USING SAME   Abstract of Disclosure A temporary pipeline capping unit wherein the unit is permanently attached over an opening in a pipeline and includes a capped branch line nipple and an internal ele-ment isolating the branch line nipple from the pipeline opening whereby a branch line can be connected to the pipeline by uncapping the branch line nipple and attaching the branch line to this nipple.  The internal element is forced by the fluid pressure in the pipeline to a position communicating the subsequently installed branch line with the pipeline opening.
Patent CA-1158967-A (CA)
Inventor: CARTER JAMES H II
IPC: G01N33/49
Filed: 1981-06-15
Granted: 1983-12-20
Abstract: ABSTRACT      A multipurpose isotonic blood diluent and a method for use of this diluent with a weak lysing reagent system, which is especially suitable for enumeration of traditional hemogram values, and also the determination of lymphoid-myeloid populations of leukocytes, particularly in automatic particle counting systems to yield two-volume leukocyte histograms. This blood diluent is an osmotically balanced aqueous solution of preselected pH containing Procaine hydrochloride for maintaining erythrocyte morphology during operation, N-(2-acetamido)iminodiacetic acid (ADA) as a blood cell stabilizing agent, and bacteriostatic agents including sodium 1-hydroxyphridine-2-thione, dimethylolurea and chlorhexidene diacetate which, together with the ADA, allow preferential determination of myeloid-lymphoid leukocytes, and other hematological values.      The lysing agent is a mixture of an aqueous solution of at least one quaternary ammonium salt, having surface active properties, and an alkali metal cyanide, being present in a concentration range which is effective itself as a lysing agent and to give two volume leukocyte histograms.
Patent CA-1167894-A (CA)
Inventor: HOWE RALPH S JR
IPC: F16C33/78
Filed: 1981-06-30
Granted: 1984-05-22
Abstract: ANTIFRICTION BEARING WITH REMOVABLE SEAL MEANS     ABSTRACT OF THE DISCLOSURE     The invention contemplates a removable-seal configuration for an axial end of an antifriction bearing wherein seal components are fixedly held by the outer bearing ring and position a seal ring in yieldable circumferentially continuous wiping contact with a seal surface on the inner bearing ring.  The component seal parts comprise a stiff annular backing ring, and a stiff removable split ring, with a yield-able annular seal ring compressed between the stiff rings and having the wiping contact with the inner ring.  The outer ring has a shouldered groove to retain the component seal parts, the groove having a section of continuously curving contour and being characterized by a convergent ramp with which a similarly sloped bevel of the split ring has wedging contact to derive the indicated compression of the yieldable seal ring.
Patent CA-1183193-A (CA)
Inventor: SEELEY FREDERICK F
IPC: A47B77/08
Filed: 1981-08-18
Granted: 1985-02-26
Abstract: A B S T R A C T     A cooler case of the evaporative type cooler the elements of which comprise a tank body, opposite side walls, a rear wall and a top wall, the assembly of these elements being effected by barb surfaces on some of said elements interengaging respective adjacent retaining surfaces on others of said elements, thereby reducing the number of metal fasteners used, or totally eliminating metal fasteners.
Patent CA-1182246-A (CA)
Inventor: MARRION ALISTAIR R
IPC: C09D133/04
Filed: 1981-09-02
Granted: 1985-02-05
Abstract: ABSTRACT OF THE DISCLOSURE     A coating composition comprises a hydroxy component having at least two free hydroxyl groups per molecule and an anhydride component which is a polymer-containing cyclic carboxylic acid anhydride groups derived from an olefinically unsaturated cyclic carboxylic acid anhydride, the two components being packaged separately during storage of the composition and being compatible on mixing.  At least one of the components is a film-forming polymer.  The composition includes a catalytically effective amount of amine groups for accelerating the curing reaction between the hydroxyl groups and the anhydride groups.  The amine groups are present in the molecule of the hydroxy component or in a separate amine compound.  The hydroxy component is preferably a film-forming acrylic copolymer having pendent hydroxyl and dialkyl-amino-alkyl groups.  The composition is particularly useful as a glossy pigmented coating for rigid substrates such as vehicle bodies where hardening of the coating at ambient temperature is required.
Patent CA-1145921-A (CA)
Inventor: LUCOUS ROBERT W
IPC: E06B3/30
Filed: 1981-09-25
Granted: 1983-05-10
Abstract: Docket 2573 RETAINER STRIP ASSEMBLY FOR FLEXIBLE SHEET MATERIAL                    Abstract of the Disclosure A flexible sheet of material such as plastic film is attached to a supporting surface by a two-piece retainer strip assembly including a bottom strip member and a top strip member extruded from a semi-rigid plastics material and having the same width.  The bottom strip member has a recess with undercut portions defined by opposing inwardly project-ing protuberances, and the top strip member has an inner portion with outwardly projecting protuberances, one of which is formed with a cam surface.  In one embodiment, the bottom strip member has projecting bottom corner portions which assure an air-tight seal between the bottom strip member and the supporting surface.
Patent CA-1168598-A (CA)
Inventor: CUMMING JAMES C
IPC: F16D55/40
Filed: 1981-09-30
Granted: 1984-06-05
Abstract: IMPROVED FRICTION BRAKE Abstract of the Disclosure An improved brake for a wheel mounted on a spindle is of the type which includes a housing secured to the spindle with a plurality of brake discs carried by the housing for relative rotation therewith.  A plurality of reaction plates are carried by the hub of the wheel for relative rotation therewith and the discs and plates are intervened in an alternating fashion to define a pack.  A first piston is axially, slidably mounted in a bore with the  housing  to  define a  first  expandable  chamber therebetween.  Hydraulic fluid is selectively introduced to  and discharged  from  the  first  chamber  to  produce selective movement of the first piston axially relative to the bore to cause it to produce a compressive force on the  pack.   The  improvement  includes  adding  a  parking brake  feature  by  providing  a  different  backing  plate portion  to  the  housing.   An  annular  cavity  in  the improved backing plate slidably receives a second piston therein.  The second piston is biased to cause an axial extension thereof to contact the first piston to produce a compressive force on  the  pack.   The  introduction of hyraulic  fluid  to  a  second chamber between  the  second piston and the cavity will axially move the second piston away from the pack, overcoming the biasing and preventing it from applying the compressive force to the pack.
Patent CA-1146896-A (CA)
Inventor: REALE LUCIO V LAKE ONTARIO DRI
IPC: C10G1/04
Filed: 1981-10-02
Granted: 1983-05-24
Abstract: ABSTRACT OF THE DISCLOSURE           Tar is continuously separated from tar sand or crushed tar shale by continuously moving the sand or shale along a path of travel; softening the sand or shale by adding water, adding steam to the sand or shale to form a suspension, subjecting the suspension to a striking action using blades rotating in a direction opposite to the direction of movement along the path of travel, and scraping tar from the blades using stationary scrapers on each side of the blades.  The striking and scraping actions are repeated several times to remove as much tar as possible from the sand or shale.
Patent CA-1173718-A (CA)
Inventor: MULLER JEAN C
IPC: A01F12/10
Filed: 1981-12-07
Granted: 1984-09-04
Abstract: S/N 391,660 ABS           In a crop threshing mechanism comprising a threshing cylinder 3 located adjacent a concave thresh-ing grate 6 and driven to thresh crop fed tangentially between the cylinder 3 and grating, a crop conveyor 27, in the form of a roller or continuous band conveyor, is located along the leading edge of the grate 6 with respect to the crop feed direction so that crop passes over it to the cylinder 3 and grating 6, and a change-able speed drive mechanism drives the conveyor 27 and allows its speed to be changed, thereby to control the speed of crop flow.  A crop elevator 5 is supported to pivot about the axis of the cylinder 3 to raise and lower a crop collecting table 4 carried at the bottom of the elevator, the conveyor 27 being located between the upper end of the elevator floor 25 and the leading edge of the grate 6 so as to form a substantially continuous crop flow path with said floor and grate. The grate 6 and conveyor 27 are mounted so as to pivot with the elevator 5 about the axis of the cylinder 3>  A crop guide flap 34 is provided adjacent the conveyor 27 to vary the angle at which the crop is fed to the cylinder 3.
Patent CA-1168904-A (CA)
Inventor: VAN BAKEL BERNARDUS L M
IPC: G01B13/06
Filed: 1981-12-10
Granted: 1984-06-12
Abstract: ABSTRACT:           A device for carrying out measurements on a thin flexible tape material comprises at least one pair of mutually spaced guide elements which, on adjacent sides, are provided with identical curved guide surfaces which extend substantially parallel to each other, between which surfaces a guide channel for the tape material is formed. In the guide surfaces supply ducts terminate for supplying a pressurized gaseous medium to both sides of a tape mater-ial in the guide channel.  In the longitudinal direction the tape material can be guided in the guide channel by means of the medium along a curved path which is substant-ially parallel to and spaced from the guide surfaces.  In each of the guide surfaces a termination of at least one measuring duct is situated, the terminations being arranged at least substantially directly opposite each other, in a pair or pairs which measuring ducts communicates with at least one pressure transducer which is connected to measur-ing means.  By determining the pressure difference on each side of the tape material with the aid of the measuring means the device enables local tensile stresses in the tape material to be measured.
Patent CA-1187782-A (CA)
Inventor: DOHRENDORF HANS A
IPC: B65B9/067
Filed: 1981-12-23
Granted: 1985-05-28
Abstract: FOLDER FOR POLYFILM                       Abstract of the Disclosure A packing machine having a film former for converting a flat, unfolded web of thermoplastic film material into a relatively flat rectangular tube with one major surface of the flat tube having an inwardly turned edge and the other major surface of the flat tube overlapping the turned-in edge. In one embodiment, the former itself comprises a single piece of rigid sheet material which has a generally rectangular portion with an isosceles right triangle integrally formed thereon, the two legs of that triangle being aligned, respectively, with an an end edge and an adjacent side edge of the rectangular piece. The sheet material is then folded over or otherwise formed such that the end edge and its extension, i.e., one leg of the isosceles triangle, are parallel to the adjacent side edge with the plane of the folded portion being generally parallel to the plane of the rectangular portion. The film former has a further notch formed inwardly from the adjacent edge and disposed in the notch is a further folded triangular segment. As the web of film is routed over and through the film former, the flat rectangular tube described above is generated on a continuous basis and the product being packaged is simultaneously fed through the former and into the flat tube as it is generated. A side seal is then created in the overlapping area and, subsequently, transversely extending end seals are formed to totally encapsulate the product while severing the web.
Patent CA-1153608-A (CA)
Inventor: HERZ ARTHUR H
IPC: G03C1/34
Filed: 1982-01-22
Granted: 1983-09-13
Abstract: Abstract of the Disclosure:         Photographic silver halide emulsions are pro-tected against latent image fading by latent image stabilizing compounds having the structure:                        wherein:         R1 is hydrogen, alkyl, or aryl, R2 and R3 are each individually hydrogen alkyl, alkoxy, carbox;, alkoxycarbonyl, or alminocarbonyl;         R4 and R5 are each individually hydrogen, alkyl, aryl, cyano, halogen, formyl, carboxy, alkoxy-carbonyl, aryloxycarbonyl or aminocarbonyl;         n is an integer of 1 or 2; and m?n is a cation of valence n.