baber/WOPTO huggingface dataset:
Patent CA-1286901-C (CA)
Title: Air shower apparatus and method
Inventor: ASHMORE GREGORY J
IPC: D21F7/06
Filed: 1987-02-13
Granted: 1991-07-30
Abstract: ABSTRACT OF THE DISCLOSURE    A hooded  air  shower  system  for  controlling  the diameter profile of a rotating cylinder  is disclosed. Air  is supplied to an air chamber  and then channeled into  a  plurality  of conduits  that  correspond  to  a plurality of cross-machine zones of the cylinder.   The air  temperature  is  regulated within each conduit and separate  channeling  is  maintained  until  the  air  is directed  to  the  cylinder,    An obstructing  device substantially restricts movement of the air along  the cylinder to one circumferential direction, and a given portion of directed air moves along substantially the entire  circumferential range of  the cylinder  that is subtended by the hood.
Patent CA-1275382-C (CA)
Title: Fuel vapor storage canister
Inventor: FORNUTO JOSEPH
IPC: F02M25/08
Filed: 1987-03-19
Granted: 1990-10-23
Abstract: FUEL VAPOR STORAGE CANISTER            Abstract of the disclosure A canister adapted to store fuel vapor discharged from a fuel tank has an inlet chamber that forms a trap for liquid fuel.  Fuel is purged from the canister through a purge tube that has a small liquid purge hole at the bottom of the chamber and a large vapor purge hole spaced above the bottom of the chamber.
Patent CA-1294894-C (CA)
Title: Acoustic transducer for a borehole logging tool
Inventor: SIMS CLAUDE C
IPC: G01V1/52
Filed: 1987-04-30
Granted: 1992-01-28
Abstract: AN ACOUSTIC TRANSDUCER FOR A BOREHOLE LOGGING TOOL          ABSTRACT OF THE DISLCOSURE     A bender acoustic transducer has a flat, piezoelectric element 26 affixed to a flat, elongated inert element 27. The ends of the inert element 27 are hinged on a supporting rectangular frame 28 which has a rectangular opening.  Opposite surfaces of the transducer are exposed so that when a voltage is applied, a dipole acoustic wave is generated by the transducer.
Patent CA-1309016-C (CA)
Title: Homogeneous fluoroassay methods employing fluorescent background rejection and water-soluble rare earth metal chelate fluorophores
Inventor: WIEDER IRWIN
IPC: E21B47/00
Filed: 1987-06-16
Granted: 1992-10-20
Abstract: ABSTRACT OF THE DISCLOSURE          Homogeneous assays for determining quantitatively the extent of a specific binding reaction can be carried out effectively on very dilute solutions using measurements of fluorescence if a fluorescence measurement scheme that is capable of rejecting short-lived background fluorescence is employed and if the fluorescent group being measured has the following properties: a. the group being measured must be a rare earth metal chelate complex combination; b. the chelate must be water-soluble; c. the complex combination must also be stable in extremely dilute aqueous solutions, that is, the measured chelate must have at least one ligand having a metal-to-ligand binding constant of at least about 1013M-1 or greater and it must have a fluorescent emission that is  long-lived compared to the longest decay lifetime of ambient substances and have a half life of from 0.01 to 50 msec.
Patent CA-1278105-C (CA)
Title: Staggered radial-fin heat sink device for integrated circuit package
Inventor: GABUZDA PAUL G
IPC: H01L23/40
Filed: 1987-06-29
Granted: 1990-12-18
Abstract: ABSTRACT OF THE DISCLOSURE         A radial fin heat sink whereby a spreader plate supports a series of radial fins which are staggered around a central open cylindrical area designed to receive a flow of air by impingement.  The radial fins comprise a pattern of variable lengths which follow In succession from a major length to a minor length to an intermediate length which pattern repeats around the periphery of the spreader plate.
Patent CA-1295014-C (CA)
Title: Digitally controlled a.c. to d.c. power conditioner that draws sinusoidal input current
Inventor: HENZE CHRISTOPHER P
IPC: H02M7/12
Filed: 1987-06-29
Granted: 1992-01-28
Abstract: ABSTRACT     An A.C. to D.C. power conditioner, which draws sinusoidal input current utilizes digital proportional-integral control to provide output voltage regulation by adjusting the gain of a current program loop. The current program loop controls the state of a power switch to force the instantaneous average current in an inductor to follow the instantaneous rectified line voltage.  Variable hysteresis control provides noise immunity by increasing the ripple current in an iron-cored filter inductor when the instantaneous input voltage is high.  Digital proportional-integral (PI) control provides output voltage regulation by adjusting, in discrete steps, the gain of the current program loop.  A multiplying digital-to-analog converter serves as an interface between the voltage regulation loop and the current program loop.  The sampling rate of the PI controller is determined by the input line frequency, which allows good transient response to be obtained.  The current program loop forces the current drawn by the power conditioner to follow the input A.C. line voltage, thereby electronically emulating a resistor.
Patent CA-1286862-C (CA)
Inventor: BROCKHAUS ERNST
IPC: E05D5/12
Filed: 1987-12-01
Granted: 1991-07-30
Abstract: ABSTRACT OF THE DISCLOSURE    A removable door hinge for motor vehicle doors including two hinge portions to be fastened to the motor vehicle body and the motor vehicle door, respectively.  The hinge portions have eye portions defining eye bores.  When the hinge is assembled, the eye portions mesh with each other and a hinge pin extends through the eye bores.  The two hinge portions are secured against unintentional separation over the permissible pivoting range of the hinge by means of meshing projections and recesses arranged alternatingly on the hinge portions.          The hinge pin is divided into two bolt-like halves which are each non-rotatably fastened in an eye portion of one of the hinge portions.  A recess serving for the hinge against unintentional separation is provided in the hinge portion to be fixed to the door immediately adjacent the upper eye portion of this hinge portion.
Patent CA-1287719-C (CA)
Title: Method of manufacturing molded articles
Inventor: TWILLEY IAN C
IPC: B29C67/00
Filed: 1987-12-29
Granted: 1991-08-20
Abstract: Method for manufacturing a molded article, for use, for example as a fluid filter or as a preform for a structural composite, is prepared from a batt of nonwoven structural fibers and a binder material, such as binder fibers or a thermoresponsive resin. The batt is stabilized by exposing it to a temperature slightly below the melting point of the binder material, so that the binder material becomes tacky and bonds the fiber materials at the surface of the batt. By exposing the batt to the heat for only a few seconds, only the binder material at the surface of the batt bonds the structural fibers; the structural fibers within the batt remain unbonded. Accordingly, the batt is "skinned", so that it is stiff enough to be handled, but is still flexible enough that it can be molded into complex shapes. The molding is effected in a mold in which heated air is drawn through the batt to force it to assume the contours of the mold.
Patent CA-1341628-C (CA)
Title: Devices and systems comprising ba-cuprate superconductor
Inventor: BATLOGG BERTRAM JOSEF
IPC: C01G3/00
Filed: 1988-01-07
Granted: 2012-03-06
Abstract: A class of superconductive materials containing copper-oxygen bonding and with mixed cation-occupancy designed with a view to size and valence consideration yield useful values of critical temperature and other properties. Uses entail all applications which involves superconducting materials such as magnets and transmission lines which require continuous superconductivity paths as well as detectors (e.g., which may rely on tunneling).
Patent CA-1284941-C (CA)
Title: Kerb climbing device
Inventor: SINGLETON JOHN M
IPC: A61G5/00
Filed: 1988-01-11
Granted: 1991-06-18
Abstract: Abstract:          KERB CLIMBING DEVICE     A kerb climbing device for a wheelchair having a pair of wheels of relatively small diameter comprises a guide arm and a lifting arm mounted centrally between the wheels for pivotal movement about a horizontal axis extending between opposed sides of the wheelchair. The guide arm and lifting arm extend forwardly of the wheels in an operative position of the device in which the free end of the lifting arm is spaced above the free end of the guide arm.  The free end of the guide arm is arranged for locating against a kerb and the lifting arm is pivotal in response to engagement of the free end of the guide arm with the kerb to lower the free end of the lifting arm onto the kerb and lift the wheels of the ground thereby facilitating mounting of the kerb.
Patent CA-1312684-C (CA)
Title: Electrodeposition coating composition containing modified epoxy resin having chargeable groups
Inventor: YAMADA MITSUO
IPC: C08G59/14
Filed: 1988-01-28
Granted: 1993-01-12
Abstract: ABSTRACT OF THE DISCLOSURE           Anodic  electrodeposition  compositions  are disclosed  which  contains  A water-soluble  or  water-dispersible modified  epoxy  resin  derived  from an epoxy resin having two epoxide groups and at least one alcoholic hydroxy group at the terminals and the middle of the resin backbone, respectively.   The modified epoxy resin has at least  one  polymeric  side  chain  block  bound  to  said alcoholic hydroxy group and at least one acid group derived from said terminal epoxide group.  The compositions possess improved film forming properties.
Patent CA-1300660-C (CA)
Title: Segmented pipe joint retainer glands
Inventor: SHUMARD DENNIS D
IPC: F16L21/04
Filed: 1988-02-08
Granted: 1992-05-12
Abstract: ABSTRACT OF THE DISCLOSURE    A segmented retainer gland assembly for holding pipe joints and the like together, including at least two gland segments in the shape of a circular arc forming together a circular gland for securing around a circular pipe, each of the segments having end flanges projecting substantially perpendicular to one side face of the gland segment, a clamping bracket having an inside face provided with a recess sized and shaped to receive the two end segment end flanges when adjacent ends of the gland segments are positioned together, each of the clamping brackets and gland segments having bolt holes and each of the clamping brackets having corresponding bolt holes which align with the bolt holes in the gland segments when the segments are positioned together, and bolts and nuts for securing the clamping brackets on the gland segments to hold the segments together at the end flanges to form a circular gland when the flanges are assembled together.          Tapered, circular, and square configured gland segment end flanges and clamping bracket inside recesses are provided in dif-ferent embodiments.  A joint restraint harness is also disclosed including two gland asemblies, one on a pipe spigot end and the other on a bell of a joint, held together by axial tie rods.
Patent CA-1312974-C (CA)
Title: Polyurethane foam catalysts that eliminate polyurea-containing polyol based masterbatch cure drift
Inventor: PETRELLA ROBERT G
IPC: C08G101/00
Filed: 1988-02-08
Granted: 1993-01-19
Abstract: ABSTRACT    In the preparation of a high resiliency polyurethane foam by react-ing a polyisocyanate with a polyurea dispersion-containing polyol based masterbatch composition also containing a tertiary amine catalyst for the polyurethane reaction, the improvement for eliminating cure draft of such stored polyol compositions which comprises employing a catalyst composi-tion consisting essentially of 5 to 15 wt% triethylenediamine, 20 to 35 wt% 4-(2-dimethylaminoethyl) morpholine, 20 to 35 wt% N,N,N',N'-tetramethyl-1,2-diamino-2-methylpropane, 10 to 25 wt% bis(dimethylaminoethyl)ether, and to 40 wt% of an N-hydroxyalkyl quaternary am-monium acid salt.
Patent CA-1304393-C (CA)
Title: Cyanomethyl acid halides of phosphorus, process for their preparation and their precursors, alkyl esters of cyanomethyl-methylphosphinic acid
Inventor: KLEINER HANS-JERG
IPC: C07F9/42
Filed: 1988-03-09
Granted: 1992-06-30
Abstract: Abstract of the Disclosure Novel compounds of the general formula I                                             (I) in which R1 represents Hal or C1-C3-alkyl and Hal represents a halogen having an atomic weight of 35 to 80 are disclosed.  Also disclosed is a process for the preparation of such compounds by reacting a compound of the general formula II                                                (II) in which R2 represents C1-C3-alkyl or OR3 and R3 represents C1-C8-alkyl, preferably C1-C3-alkyl, with an acid chloride of the formula MHal2 (III), in which M represents SO, CO or PHal3 and Hal represents a halogen having an atomic weight from 35 to 80, which process, if M is CO, is carried out in the presence of a catalyst which is customary for the phosgenation of diesters of phosphonic acid.  The compounds of the invention are useful as intermediates for the preparation of aminocarbonylmethyl phosphonic acid and alkyl-aminocarbonylmethylphosphinic acids.
Patent CA-1292112-C (CA)
Title: Tongue and groove profile
Inventor: PARASIN ALEXANDER V
IPC: E04F15/04
Filed: 1988-03-16
Granted: 1991-11-19
Abstract: ABSTRACT OF THE DISCLOSURE      A tongue and groove plywood panel in which the tongue comprises a protruding lip having a triangular cross-section extending along the length of a first essentially convex edge.  The essentially convex edge is formed by sloping surfaces that slope away from the junctions of the tongue and the first edge to the upper and lower veneers of the panel. The groove comprises a triangular cavity formed in a second essentially concave edge opposite the first essentially convex edge.  The second essentially concave edge is formed with inwardly sloping surfaces that slope inwardly from the upper and lower veneers of the panel to the groove to form a shallow essentially concave channel along the second edge to guide and direct the tongue into the groove.  When the panel is joined to a similar panel, the tongue of one panel engages the groove of the other and the veneers of the joined panels are spaced slightly at the joint due to the sloping surfaces of the first essentially convex edge sloping away from the adjacent sloping surfaces of the second edge of the joined panel.  Such an arrangement allows for swelling of the tongue and groove joint of the present invention due to moisture without the buildup of internal stresses which would tend to cause buckling at the joint.
Patent CA-1339208-C (CA)
Title: Fusion proteins containing a hinge region for enhanced cleavage
Inventor: HUSTON JAMES S
IPC: C07K19/00
Filed: 1988-03-18
Granted: 1997-08-05
Abstract: Disclosed is a method for the isolation and purification of polypeptides expressed in host cells by recombinant DNA techniques.  A fused polypeptide is produced containing a desired polypeptide fused to additional amino acids.  The additional amino acids define a leader sequence having properties exploitable in purification, a hinge region, and a cleavage site.  The hinge region is cysteine-free and has a secondary structure which serves to expose the cleavage site to a selected endopeptidase.  The method of the invention involves the production of a fused polypeptide which may be efficiently isolated by exploiting the properties of the leader sequence, and then efficiently cleaved at the cleavage site in an appropriate aqueous environment by virtue of the influence of the hinge on the cleavage agent/cleavage site reaction and other properties of the fused polypeptide.
Patent CA-1314797-C (CA)
Inventor: DAVISSON JACK A
IPC: B60C9/22
Filed: 1988-04-05
Granted: 1993-03-23
Abstract: Abstract of the Disclosure REINFORCING PLIES FOR TIRES    A radial carcass, belted tire (10) comprises an overlay ply (18) which provides the tire with high speed endurance without adversely affecting the uniformity of the tire.  The overlay ply (18) comprises textile reinforcing elements consisting of successively aligned cord sections (21) arranged in parallel rows.  Each cord section has a length which is comprised between 1/4 and 1/8 of the corresponding circumferential development of the tire.  The cord sections (21) in each row have substantially equal length and are separated by interruptions (22) of a width such that the total width of the interruptions per circumferentially extending row of cords is less than 4% of the corresponding circumferential development of the tire.
Patent CA-1284676-C (CA)
Title: Optical transmission apparatus
Inventor: ODAGIRI YUICHI
IPC: H01L33/00
Filed: 1988-04-22
Granted: 1991-06-04
Abstract: ABSTRACT OF THE DISCLOSURE   An optical transmission apparatus is operable without being effected by ambient temperaure by combining the control over output light of a semiconductor light emitting element, which constitutes a semiconductor laser unit, and the control over the temperature of the light emitting element. The apparatus is usable in an extended range of ambient temperatures.
Patent CA-1306266-C (CA)
Inventor: WILLMOTT COLIN B
IPC: E05D15/38
Filed: 1988-05-18
Granted: 1992-08-11
Abstract: ABSTRACT        An adjustable speed garage door operator which has a longitudinal rail with a trolley mounted on the rail and connected to a door to open and close it.  A chain is connected to the trolley and is mounted on a front idler sprocket and can be selectively mounted on different drive sprockets which have different numbers of teeth so as to vary the speed of the door.
Patent CA-1340601-C (CA)
Title: Diesel fuel compositions
Inventor: SEXTON MICHAEL DAVID
IPC: C10L1/30
Filed: 1988-05-26
Granted: 1999-06-22
Abstract: A diesel fuel composition containing a diesel fuel and a minor proportion by weight of a quaternary ammonium salt soluble therein. The quaternary ammonium salt is effective in reducing fouling of injector nozzles and in improving combusion chamber and piston cleanliness of diesel engines.
Patent CA-1292526-C (CA)
Title: Electric safety socket
Inventor: AVITAN SAIMON
IPC: H01R13/703
Filed: 1988-06-02
Granted: 1991-11-26
Abstract: ABSTRACT           An electrical safety socket in which the neutral and live socket outlets are electrically isolated until substantially parallel pins of a two- or three-pin plug are inserted therein.  The neutral and live socket outlets are resiliently biased into a non-parallel disposition such that insertion of a plug into the socket rotates them  into a mutually parallel orientation, at the same time causing laterally disposed abutting means to impinge on a switch assembly,  thereby  closing neutral  and  live  switches connected between the live and neutral feeders and the respective socket outlets, Also disclosed is a safety lamp socket having a split collar which is splayed apart upon insertion of a lamp.   Armatures attached to respective collar components are thereby pivotally displaced about pivots fixed to the socket housing, opposite ends of the armatures impinging on neutral and live switch contacts so as  to close the corresponding switches and connect the neutral and live feeders to the respective socket outlets.
Patent CA-1316647-C (CA)
Title: Toothbrush
Inventor: KEY JOHN R
IPC: A46B9/04
Filed: 1988-10-04
Granted: 1993-04-27
Abstract: Abstract An improved toothbrush design incorporating a bristle head including a fixed obtuse angle.  This toothbrush is designed to be the sole implement needed for dental hygiene.  The angled bristle head provides superior cleansing of the lingual, buccal, embrasure, and distal aspects of the teeth and gums.
Patent CA-1320735-C (CA)
Title: Process for the production of nitriles and anhydrides
Inventor: RAMACHANDRAN RAMAKRISHNAN
IPC: C07C57/145
Filed: 1988-10-07
Granted: 1993-07-27
Abstract: ABSTRACT     PROCESS FOR THE PRODUCTION                 OF NITRILES AND ANHYDRIDES     An improved process is provided for the production of anhydrides and nitriles from hydrocarbons by reaction with an oxygen-containing gas comprising oxygen, air or a gas enriched in oxygen relative to air and  ammonia where  a nitrile is desired,  in the presence of a suitable cata-lyst.   In  the  process,  a  selective  separator  provides recycle  of  a  substantial  portion  of  the  unreacted hydrocarbon  as  well  as  for  a  controlled  amount  of  a gaseous flame suppressor in the system.  The gaseous flame suppressor  comprises  a  substantially  unreactive  hydro-carbon containing 1 to 5 carbon atoms, carbon dioxide and nitrogen when present  in the feed  to  the  ammoxidation/ oxidation reactor.  The use of air or oxygen-enriched air in  the  feed  to  the  ammoxidation/oxidation  reactor  is particularly  advantageous  from  an  economic  view  in combination with a pressure swing adsorption unit as the selective separator.  The process is characterized by high selectivity to the formation of the product.
Patent CA-1307758-C (CA)
Title: Conveying system
Inventor: MEIER JACQUES
IPC: B65G17/42
Filed: 1988-10-19
Granted: 1992-09-22
Abstract: ABSTRACT            Conveying system with one or more driving members, conveying chains in operative connection therewith and means arranged on said chains and receiving the conveying loads, the conv-eying chains being guided in chain channels, one or more tracks connecting satellites with one or more central stations. A track comprises a driving station with an associated track and a conveying chain (drag chain) without a return strand running parallel to said track and on whose one end is arranged a conveyed product-receiving means, whilst the other end is freely movable.  The track connects said driving station (satellite) with a central station or another driving station (satellite).       (Fig.1)
Patent CA-1308275-C (CA)
Inventor: MASUMOTO TSUYOSHI
IPC: C09D7/61
Filed: 1988-11-03
Granted: 1992-10-06
Abstract: ABSTRACT OF THE DISCLOSURE        The present invention provides an additive powder for coating materials or plastics, comprising a particle of a metal or glass, comprised of a particle having a thickness of 0.5 to 5 µm, a minor axis/major axis of from 5 to 500 µm, an aspect ratio (ratio of the major axis to the thickness) of not less than 5, and a ratio of the minor axis to the major axis, of from 1 to 10, and having the shape of a leaf as a whole.  This powder can be prepared by melting a metal or glass, bringing the resulting melt to flow out from a nozzle and jetting a gas to the melt to form droplets of the melt, and bringing said droplets, before they solidify, to collide against the surface of a rotating cooling member having the shape of an cone or horn and provided in the direction of the flow of said droplets, followed by cooling to effect solidification.  This powder can readily cause the leafing phenomenon when added in coating materials and coated, and hence the coating surface can be effectively covered with the powder, so that it can impart superior corrosion resistance and weathering resistance as compared with conventional powders.  It can also impart superior electromagnetic shielding properties when added in plastics or rubbers.