baber/WOPTO huggingface dataset:
Patent CA-2015506-C (CA)
Title: Method for continuous preparation of polyethylene material having high strength and high modulus of elasticity
Inventor: KOBAYASHI SEIZO
IPC: B29L7/00
Filed: 1990-04-26
Granted: 1995-06-06
Abstract: A method for the continuous preparation of a polyethylene having high strength and high modulus of elasticity is here disclosed which comprises the steps of mixing 100 parts by weight of an ultra-high-molecular-weight polyethylene powder having an intrinsic viscosity of 5 to 50 dl/g in decalin at 135°C with 2 to 50 parts by weight of a liquid organic compound having a boiling point higher than the melting point of the polyethylene, feeding the resulting mixture to between a pair of upper and lower endless belts facing each other, continuously compression-molding the mixture at a temperature less than the melting point of the mixture by pressing means disposed inside the endless belts, and rolling and then drawing the same.
Patent CA-2018502-C (CA)
Title: Integrated semiconductor diode laser and photodiode structure
Inventor: BUCHMANN PETER L
IPC: H01S5/00
Filed: 1990-06-07
Granted: 1994-01-11
Abstract: ABSTRACT      Integrated  semiconductor  structure with optically coupled laser diode and photodiode, both devices having etched, vertical facets. The photodiode has a spatially non-uniform  sensitivity  profile  with  respect  to  the incident light beam emitted by the laser. This is due to the varying distance  from the  laser  facet  and/or  to variations  in  the  angle  of  incidence  and  results  in photocurrents produced by the photodiode that depend on the  intensity  distribution  of  the  light  beam.  The spatially  non-uniform  sensitivity  profile  allows  the measurement of the far-field intensity distribution of the laser and thus on-wafer  screening of  lasers with respect to their mode-stability.
Patent CA-2032425-C (CA)
Title: Process for removing sulfur dioxide from flue gases
Inventor: BENSON LEWIS B
IPC: C01F5/22
Filed: 1990-12-17
Granted: 1998-02-10
Abstract: A  process for removing sulfur dioxide from a flue gas  in a wet  scrubber with  an  aqueous  slurry  formed  from calcium  hydroxide  and magnesium  hydroxide  with  magnesium hydroxide or magnesium oxide recovered therefrom.  A thickened sludge from a thickener containing calcium sulfite solids is separated  and  an  aqueous  sulfite  solution  removed,  with  a first portion of the solution returned to the thickener while a  second  portion  thereof  is oxidized  to  form  a  sulfate solution.     Lime  is  added  to  the  sulfate solution  to precipitate  calcium  sulfate  and  form  an  aqueous  magnesium hydroxide suspension,  with the precipitated calcium sulfate separated from the magnesium hydroxide suspension which may be dewatered to form a magnesium hydroxide product or calcined to produce magnesium oxide.
Patent CA-2032961-C (CA)
Title: Disc player
Inventor: YANAGISAWA TETSU
IPC: G11B7/085
Filed: 1990-12-21
Granted: 2000-04-04
Abstract: A pickup feeding apparatus is comprised of a first rack provided on a pickup supporting member supported so as to become movable along a guide shaft, a second rack provided slidably relative to the first rack, a drive force transmitting gear for transmitting a driving force of a driving source to the first and second racks, a spring member for spring-biasing one of the first and second racks to the other along the guide shaft of the first and second racks in such a direction that gear teeth of a gear of the drive force transmitting means which are meshed with the first and second racks are gripped. A disc player is also disclosed, in which a disc drive motor and a pickup feeding motor are provided on the same chassis and the disc drive motor is located on the chassis at the position above the pickup moving locus fed by the pickup feeding device.
Patent CA-2039302-C (CA)
Title: Filter cell sheet installations
Inventor: NICHOLS WILLIAM R
IPC: B01D24/00
Filed: 1991-03-27
Granted: 1997-02-04
Abstract: Automatic backwash filter systems including a filter tank divided into a multiplicity of seriate cells of substantially the same width by a plurality of vertical rectangular cell sheets are improved by provision of new spacer assemblies to mitigate bowing of the cell sheets during backwashing or other operations applied to the cells. Such spacer assemblies include horizontally aligned bores that extend through each cell sheet adjacent their top, one or more stringers that extend through the bores, and a plurality of tubes of approximately the same length substantially equal to the width of the cells. One of such tubes is positioned in each filter cell surrounding the stringer present in such cell and between the surfaces of the respective cell sheets. Where a plurality of stringers are used in the spacer assemblies arrangements are disclosed for making final connections to complete the assemblies.
Patent CA-2042930-C (CA)
Title: Hay bale basket
Inventor: KUHNS ABE B
IPC: A01D85/00
Filed: 1991-05-21
Granted: 2001-12-04
Abstract: A mobile basket for accumulating and transporting hay bales includes a container mounted on wheels. The container has a pair of side walls which are spaced from each other and the spacing is greater at the rear of the container than at the front thereof. A rear wall of the container is hinged at its top and opens by gravity to discharge the bales from the container. A chute is also provided at the front of the container to receive hay bales directly from a hay baler and discharge them to the container. The rear wall may be opened and shut remotely, and a plurality of the containers may be readily nested with relation to each other for shipment.
Patent CA-2044890-C (CA)
Title: Operator seat base
Inventor: HOLM DAVID R
IPC: B60N2/38
Filed: 1991-06-18
Granted: 1995-02-28
Abstract: A seat base having protruding members fixed to the underside thereof that are positioned within mating recesses formed in the fenderdeck of a vehicle.  The base is clamped to the fenderdeck by a pair of screws.  The screws and mating features defined between the seat base and fenderdeck secure the base to the vehicle to prevent shifting of the seat during operation.  If the screws become loosened during operation, the protruding members will engage side walls of the recesses to prevent the base from shifting fore and aft suddenly and unexpectedly, and to alert the operator that the screws have become loosened.
Patent CA-2047093-C (CA)
Title: Method and apparatus for hot water heater sediment removal
Inventor: MCDONALD GEORGE N
IPC: F24H9/00
Filed: 1991-07-15
Granted: 1995-06-20
Abstract: Sediment can be removed from hot water heaters via the method and apparatus of the invention.  The tank is drained and the drain tube is used for access to the bottom of the tank.  Water jet probes connected via a hose to a water supply are inserted through the drain valve opening, and are directed in such a way that the sediment is forced into suspension and runs out of the tank through the drain tube, around the probe.  Preferably, the water and sediment drain into a pan, and preferably a pump is provided to pump water from the pan to a drain or other remote discharge location.
Patent CA-2055156-C (CA)
Title: Support for a moving part
Inventor: BOLTON JOHN RICHARD
IPC: B24B13/00
Filed: 1991-11-08
Granted: 1995-11-21
Abstract: A device for supporting an article 27 such as a lapping tool for polishing lenses is designed to allow limited motion of the article about a central point. The device comprises a base 1, a mount 2 and a bearing between the base and the mount allowing the said motion of the article when in place on the mount; while previously the joint has been a complicated gimbal arrangement, which is difficult to maintain, in the invention the bearing comprises a ball-and-socket-type joint 9,14.
Patent CA-2056075-C (CA)
Title: Preparation of ortho-phenylenediamine
Inventor: HERKES FRANK E
IPC: C07C209/68
Filed: 1991-11-22
Granted: 2001-11-06
Abstract: A vapor phase process for the dehydrogenation of 1,2-diaminocyclohexane to form o-phenylenediamine using a catalyst containing a palladium metal and an alkali metal hydroxide.
Patent CA-2057916-C (CA)
Title: Apparatus for introducing bulk materials into pneumatic conveying line
Inventor: HERMAN ALVIN
IPC: B65G53/08
Filed: 1991-04-23
Granted: 1993-11-16
Abstract: A portable pneumatic conveyor for various bulk materials includes a hopper (12) which supplies the bulk material to a feed tube (14). The feed tube (14) is provided with a feed auger (24) which advances the bulk material along the feed tube (14) and into a chamber (16) through which a current of air is passed by way of air inlet (18) and air outlet lines (20) connected to that chamber (16). The bulk material which is deposited within the chamber (16) is fluidized by the air current and carried by the air current through the air line outlet (42) and along the outlet conveying line (20) to a storage site, such as a silo. In order to prevent air blow-back through the feed tube (14) and alongside the auger (24), the outlet end of the feed tube (14) is provided with a gate (54) which is intended to at least partly close when the flow of bulk material into the chamber (16) slows down or stops.
Patent CA-2064115-C (CA)
Title: Aseptic valve construction
Inventor: HOOBYAR LUTHER THOMAS
IPC: F16K41/10
Filed: 1992-03-26
Granted: 2002-02-05
Abstract: In an aseptic valve construction, a valve body having an inlet flow passage and at least one outlet flow passage, said valve body having a valve seat surrounding the inlet flow passage, said body having an opening therein in alignment with the inlet passage and in communication with the inlet passage and with said at least one outlet passage, said body having a shoulder providing a shoulder seat surrounding said opening, an actuator sleeve adapted to be secured to said valve body, a shaft, means mounting said shaft in said sleeve to permit axial movement of said shaft in said sleeve, a diaphragm removably secured to said shaft, said diaphragm having a portion movable into engagement with the valve seat surrounding the inlet passage, diaphragm actuator means engaging said shaft for causing axial movement of said shaft for moving said diaphragm between open and closed positions with respect to said valve seat whereby in a closed position said diaphragm interrupts the flow of a liquid from the inlet passage through the outlet passage and in an open position permits the flow of liquid from the inlet passage to the outlet passage and means for preventing rotation of said diaphragm as said shaft is actuated to cause movement of said diaphragm between open and closed positions, said diaphragm having a portion engaging the shoulder seat which is retained in engagement with the shoulder seat during movement of the diaphragm between open and closed positions.
Patent CA-2067180-C (CA)
Title: Semiconductor sensor
Inventor: MOSSER VINCENT
IPC: G01L9/00
Filed: 1990-10-15
Granted: 2001-04-10
Abstract: The invention relates to field effect semiconductors sensors. The sensor according to the invention is comprised of a ring oscillator (3) consisting of an odd number of CMOS reversers and arranged in an area (2) which is sensitive to the physical magnitude to be measured. In order to increase the sensitivity of the sensor, for each CMOS reverser, the channel n of the NMOS transistor is arranged perpendicularly to the channel p of the PMOS transistor.
Patent CA-2082141-C (CA)
Title: Cotter pin spreader with safety lock feature
Inventor: NADHERNY RUDOLPH E
IPC: F16B21/14
Filed: 1992-11-04
Granted: 2003-09-09
Abstract: A device for automatically spreading and locking cotter pins as they are driven into place is provided. The device is an improvement on prior cotter pin spreading devices which can accidentally dislodge or become loosened.    The improved devices have locking extensions which, during the act of driving cotter pins into place, become deformed into locking engagement with the heads on the driven and spread cotter pins. Several forms of locking extensions are disclosed.
Patent CA-2093579-C (CA)
Title: Sliding-type magnetic head for magnetooptical recording
Inventor: TAKAHASHI TOMOYUKI
IPC: G11B11/105
Filed: 1993-04-07
Granted: 2002-11-19
Abstract: A magnetic head for magnetooptically recording information on a magnetooptical recording medium in sliding contact therewith has a head body having a sliding sole for sliding contact with a magnetooptical recording medium, a leaf spring, the head body being supported by the leaf spring, and a support member, the leaf spring having an end fixed to the support member. The leaf spring comprises a first spring system joined to the support member, a second spring system extending from the first spring system, and a third spring system extending from a distal end of the sec-and spring system toward the support member, the head body being supported by the third spring system. The support member has a stopper which holds the distal end of the sec-ond spring system in a position to store a predetermined amount of recovery energy in the leaf spring.
Patent CA-2093700-C (CA)
Title: Disposable diapers
Inventor: TANJI HIROYUKI
IPC: A61F13/511
Filed: 1993-04-08
Granted: 1998-07-14
Abstract: To  prevent  a  part  of  excretions  having  missed  an opening  formed  in  a  skin-contacting  topsheet  14  of  a disposable  diaper  from diffusively  flowing  over  the  top surface of this topsheet  14,  the opening 16 is provided along the laterally opposite sides thereof with a pair of first flaps 17 opposed to and spaced from each other by a relatively small distance and a pair of second flaps  18 similarly  opposed  to  and  spaced  from  each  other  by  a relatively large distance so that the part of excretions having  missed  the  opening  16  defined  by  the  laterally opposite side edges of the first flaps 17 may be reliably dammed by the second flaps  18 and thereby the diffusive flowing of excretion may be avoided.
Patent CA-2095757-C (CA)
Title: Horizontal unitized panel
Inventor: MENCHETTI ROBERT J
IPC: E04C2/38
Filed: 1993-05-07
Granted: 2001-11-20
Abstract: Horizontal panels, each consisting of top and bottom horizontal studs, with gypsum boards affixed therebetween, are stacked vertically, with suitable means for maintaining the wall vertical.
Patent CA-2096459-C (CA)
Inventor: LEGAULT RENE
IPC: A61G5/12
Filed: 1993-05-19
Granted: 1998-05-12
Abstract: The  collapsible  wheelchair  is  alternately  movable between a collapsed position and an open position.  The wheelchair comprises a framework having a pair of opposite side frames. The backrest assembly is pivotally connected at a lower end to the framework and is alternately movable between an open position where it is projecting vertically, and a folded position where it is collapsed against the seat.  Armrests  are pivotally connected to the backrest supports of the backrest assembly.  The rear wheels are removably connected to a corresponding side frame. The front wheels are each provided at a lower end of a corresponding mounting member and mounting swivels are used for pivotally connecting the upper end of the mounting members to the side frames so that each front wheel is alternately movable in a vertical plane between a ground-engaged position, where it is projecting under the framework, and a retracted position where it is set within the framework. The framework may also be provided with a horizontal folding system for further compaction.   The   wheelchair   provides   a   lightweight construction that occupies a minimum space when collapsed for facilitating the manipulation and transportation while still providing the user with comfort in the normal open position. Only the rear wheels need to be removed from the wheelchair.
Patent CA-2110329-C (CA)
Inventor: DONADELLO GRAZIELLO
IPC: C07C209/84
Filed: 1993-11-30
Granted: 1997-10-21
Abstract: A process for the preparation of the unsaturated dinitroaniline, ethalfluralin, having a level of nitrosamines lower than 0.5 ppm and essentially free from the compound  of addition of halogenhydric acid on  the methallyl double-bond, by treatment wlth aqueous halogenhydric acid, wherein crude ethalfluralin is treated under agitation with an aqueous solution of hydrobromic acid in the presence of sulfamic acid and of a sulfur compound selected from  the groups consisting of bisulfites, metabisulfites, hydrosulfites, sulfurous acid and gaseous sulfur dioxide.
Patent CA-2113085-C (CA)
Inventor: GRADY JOHN H
IPC: B21K1/46
Filed: 1992-05-28
Granted: 1997-07-01
Abstract: A screw head is provided with ribs (26) on some of the driver engageable surfaces. The rib (26) is slanted outwardly from the screw axis by a small angle A between 1° and 10°. A punch (150) for making a screw head with ribs (26) on some of the driver surfaces includes a slanted groove (168) for providing a rib (26) which is slanted from the screw axis by a small angle A between 1° and 10°.
Patent CA-2128277-C (CA)
Title: Device for recording data in a perturbed environment
Inventor: MEUNIER HUGUES
IPC: G01D9/00
Filed: 1994-07-18
Granted: 2007-05-22
Abstract: The data recorder device comprises: a temporary save medium (MEM) of electronic technology, the data (D) originating from the interface (IT) being recorded temporarily on the temporary save medium (MEM) in succession according to their reception, and means (AC, TH) suitable for obtaining at least one chosen magnitude relating to a predetermined environmental or operating condition, and for delivering a datum representative of the said magnitude obtained (AO, TO). The control unit (UT) comprises a recording mode in which the magnitude obtained (AO, TO) is compared with at least one predetermined value (A2, T2), and in the presence of an obtained magnitude greater than the said predetermined value, no access to the recording medium (DIS) is permitted, whilst in the presence of an obtained magnitude less than or equal to the said predetermined value, the data stored temporarily on the temporary save medium (MEM) are recorded on the recording medium (DIS) so long as access to the said recording medium is permitted. <IMAGE>
Patent CA-2131056-C (CA)
Inventor: MURRAY ROBERT JAMES
IPC: B23D59/00
Filed: 1994-08-29
Granted: 2000-07-18
Abstract: Previous methods of bucksawing logs slow the through-put of a sawmill in that the conveyor line is stopped while a given log is bucksawed to length.  The present invention provides a method for bucksawing a log which improves the throughput speed,  comprising the steps of a) advancing the log endwise along an infeed conveyor; b) raising the log above the level of said infeed conveyor while advancing the log; c) measuring the advance of the log while raised; d) stopping the log at the desired length;  e) sawing the log to produce a forward log segment; and f) lowering the for-ward log segment onto an outfeed conveyor while advancing the remaining log segments.  An apparatus for carrying out the method is also disclosed.
Patent CA-2132452-C (CA)
Inventor: HOEKSTRA MERL F
IPC: C12N9/12
Filed: 1994-01-21
Granted: 2003-10-21
Abstract: Protein kinase mutant and wild-type genes encoding polypeptides of the class heretofore designated "casein kinase I" and useful in screening compositions which may effect DNA double-strand break repair activity are disclosed. Also disclosed are methods using the polynucleotides in cell-proliferative disorders.
Patent CA-2138907-C (CA)
Title: Transmitter for sonic logging while drilling
Inventor: ARON JEFFREY BRUCE
IPC: B06B1/06
Filed: 1994-12-22
Granted: 2004-07-13
Abstract: A sonic transmitter assembly for use in logging-while-drilling includes stacks of piezoelectric crystals that extend outwardly from a nodal plate member, and a generally tubular assembly that contains such stacks and has end portions that are sealingly mounted in diametrically opposed holes in a pipe member that forms a part of the drill string. Spring mass isolator systems are employed to inhibit transmission of acoustic waves to the pipe member. Balanced mounting forces and the bilateral symmetry of the construction also inhibit transmission of acoustic waves to the pipe member, particularly waves which are asymmetric with respect to the longitudinal axis of the pipe member.
Patent CA-2139374-C (CA)
Title: Polyaminated ligands and metal complexes thereof
Inventor: MEYER DOMINIQUE
IPC: C07F13/00
Filed: 1994-12-30
Granted: 2007-11-20
Abstract: Poly(amino acid) derivatives, which are chelating agents of paramagnetic metal ions, in which at least 3 of the donor nitrogen atoms carry identical or different substituents, of formula CH (R1) - X , in which X represents CO2R a, CONR b R c or P(R d)O2H and R a, R b and R c, which are identical or different, represent H or optionally hydroxylated (C1-C8)alkyl, R d represents OH, (C1-C8)alkyl or (C1-C8)alkoxy and R1 represents a hydro-philic group with a molecular weight greater than 200 containing at least 3 oxygen atoms, with the proviso that at least 3 of the X groups are optionally salified acid functional groups.
Patent CA-2139867-C (CA)
Inventor: ALPAUGH KATHY
IPC: G09F3/00
Filed: 1993-07-12
Granted: 2004-10-12
Abstract: There is provided a postage stamp construction formed of a plurality of postage stamps adhered to a currency sized release liner by an ooze resistant pressure sensitive adhesive which construction coated with a polymeric coating of the face of the stamp and the undersurface of the release liner and dispensable from an automatic teller machine.
Patent CA-2149027-C (CA)
Inventor: PETERSSON JAN
IPC: A61M15/00
Filed: 1993-11-23
Granted: 2005-04-05
Abstract: The invention relates to an inhaler for multiple use for a medicament in powdered form to be used in conjunction with an elongate carrier (2) carrying discrete doses of said medicament. Said elongate carrier comprises a carrier body (3) being provided with equidistant depressions or cavities (5) containing said doses and a peelable cover strip (4) covering and enclosing said discrete doses. The inhaler comprises a housing (1), an air inlet (6), a powder dispensing station (7) and an air outlet (8), said inlet (6), said outlet (8) and said dispensing station (7) being interconnected by an air conduit (37) for inhaling. The inhaler further comprises displacing means (15) for moving said elongate carrier (2) so as to successively locate a discrete dose in said dispensing station (7). Said displacing means (15) is arranged to act on the peelable strip (4), in this way both moving the elongate carrier (2) into and exposing each discrete dose in the dispensing station (7), a separate indexing means (20) being provided sensing or measuring and, as necessary, blocking the movement of the carrier (2) in order to ensure that each cavity (5) containing a dose is positioned and held correctly in the dispensing station (7) upon actuation of said displacing means (15).
Patent CA-2154523-C (CA)
Inventor: ROEHRIG ADALBERT
IPC: B22D11/04
Filed: 1995-07-24
Granted: 2001-10-16
Abstract: In the case of a continuous casting mould for a I-shaped preliminary section comprising a mould cavity cross-section which is composed of two flange parts (4, 4') and a web part (5) firstly stacking of the billet in the mould is to be prevented and secondly simplified mould production is to be indicated. Furthermore it should beg possible to produce sections of this type in tubular moulds, with high casting speed and high billet quality such that their dimensions are as close as possible to the final dimensions. To this end it is proposed that the mould cavity (3) be provided at the mould end on the pouring-in side, on both sides along the web (5) in each case. with a cross-sectional enlargement, in the form of bulges (8), with respect to the identical mould cavity portion (7) at the mould end on the billet outlet side. A curve height (H) of the web bulge (8) should decrease between the end on the pouring-in side and the end on the billet outlet side in such a way that a geometric extension of an associated chord (9), which extension results from this decrease, completely or partially compensates the amount of shrinkage of the billet shell transversely to the longitudinal axis of the billet.