baber/WOPTO huggingface dataset:
Patent CA-2028978-A1 (CA)
Title: Portable alkaline fuel cell with on board hydrogen supply
Inventor: WARD CHARLES A
IPC: H01M8/083
Filed: 1990-10-31
Abstract: ABSTRACT     A portable power supply having an alkaline fuel cell and on-board hydrogen storage.  As required, hydrogen is released from the storage media which may be a metal hydride and along with a supply of oxygen, the fuel cell produces current when under load.  The hydrogen supply to the fuel cell vaporizes water produced at the anode where the hydrogen/water vapor stream is recycled to the metal hydride storage system to release additional hydrogen for circulation to the fuel cell.  On-board water storage and water drainage from the fuel cell is thereby eliminated in this portable system.
Patent CA-2029812-A1 (CA)
Title: Process for providing polyamide materials with stain resistance
Inventor: WANG SHOU-LU G
IPC: D06M101/16
Filed: 1990-11-13
Abstract: Abstract of the Disclosure A method for imparting to fibrous polyamide materials stain resistance to acid colorants is provided. The method comprises (a) applying by immersion or padding of said material or applying to the fiber during spinning thereof 0.01 to 0.3 weight percent based on the weight of said polyamide material of a stain resist agent and (b) applying sufficient stain resist agent by foam application to provide a stain resistance rating of at least about 5.
Patent CA-2031617-A1 (CA)
Inventor: VIVES MICHEL
IPC: F41H5/04
Filed: 1990-12-05
Abstract: L'invention concerne un blindage de protection balistique comprenant une plaque de blindage destinée à arrêter des projectiles devant laquelle est disposée, avec un espacement déterminé, une plaque auxiliaire constituée par  une plaque de  céramique percée d'un grand  nombre d'alvéoles réparties suivant un quadrillage régulier et formées de trous borgnes qui sont orientés  perpendiculai-rement  à  la  face  arrière de  la  plaque  auxiliaire  et débouchent sur  la  face avant de celle-ci.   La plaque auxiliaire a pour effet de déstabiliser et de griffer les projectiles afin de favoriser leur éclatement sur la plaque de blindage.
Patent CA-2036077-A1 (CA)
Title: Assembly for introducing steam into an oil-bearing stratum
Inventor: PYC IRENEUSZ
IPC: E21B43/10
Filed: 1991-02-11
Abstract: ABSTRACT OF THE DISCLOSURE     A steam generator lowered into a steam injection well for tertiary oil recovery has a conical bottom which cooperates with a conical support surface on a tube segment affixed to the casing of the well.  The steam pipe passes through an opening at the apex of the conical support which centers the steam generator as it is lowered into place.  The sealing is effected by a seal pressed by the weight of the steam generator between its conical bottom and the conical support surface.
Patent CA-2037235-A1 (CA)
Title: Base resistant fluoroelastomers with improved processibility and curability
Inventor: CARLSON DANA P
IPC: C08F214/26
Filed: 1991-02-27
Abstract: TITLE BASE RESISTANT FLUOROELASTOMERS WITH  IMPROVED PROCESSIBILITY AND CURABILITY     ABSTRACT OF THE DISCLOSURE Base-resistant peroxide-curable fluoroelastomers with improved processibility comprising a polymeric chain having tetrafluoro-ethylene as one comonomer copolymerized with monomer-units selected from the group (a) propylene, (b) propylene and vinylidene fluoride and (c) a C2-3 hydrocarbon olefin and one or more perfluoro(alkyl vinyl ethers); said polymer chains having terminal iodo-groups.
Patent CA-2038431-A1 (CA)
Title: Reduction of acidic emissions from combustion of sulfur-laden fuels
Inventor: KRIGMONT HENRY V
IPC: B01D53/50
Filed: 1991-03-18
Abstract: REDUCTION OF ACIDIC EMISSIONS FROM COMBUSTION OF SULFUR-LADEN FUELS              ABSTRACT OF THE DISCLOSURE      The  sulfur  trioxide  in  the  combustion gas stream  of  a  power  plant  is reacted with injected ammonia  to  produce a solid ammonium sulfate that is captured,  and  not  released  to  the atmosphere.  A feedforward  signal indicative of the total mass flow of  sulfur  trioxide  is determined as the product of the  measured  boiler  load  and the sulfur trioxide content  of  the combustion gas, as measured prior to the  addition  of  ammonia.    The  ammonia mass flow injection    rate   is   preferably   at   a   normal stoichiometric  ratio  of from about 1.0 to about 1.1 relative  to the sulfur trioxide mass flow rate (that is,  from about 2.0 to about 2.2 times the molar mass flow  rate  of  the  sulfur  trioxide),  avoiding the production   of   ammonia  bisulfate.    The  ammonia content  of  the  combustion  gas  stream is measured downstream  of  the  location  at  which  ammonia  is added.    Based  upon  this feedback measurement, the amount  of  ammonia  added  is  adjusted  to  be just sufficient  to react with all of the sulfur trioxide, but  not  in  such  excess  as  to be environmentally detrimental.
Patent CA-2038792-A1 (CA)
Title: Rising brace for invalid walker and method
Inventor: CUNNINGHAM THOMAS W
IPC: A61H3/00
Filed: 1991-03-21
Abstract: A portable aid for assisting an invalid or elderly person in rising from a sitting position includes a portable vertical support and a brace member attached and stored with the portable vertical support. The brace member extends away from the vertical support and has a dimension in the horizontal direction sufficient to extend across the seat of the chair to permit a sitting person to push downwardly upon the brace member for assistance in rising to a standing position.
Patent CA-2038909-A1 (CA)
Title: Blanket with two foam layers
Inventor: BELTZUNG MICHEL
IPC: B41N10/02
Filed: 1991-03-22
Abstract: The prevent invention relates to an elastic and compressible printing blanket element.      This element essentially comprises a lithographic or printing layer (1), a hard layer of elastomer (2), a layer of cellular rubber (3), a layer of fabric (4) and another layer (5) of cellular rubber forming a base layer and the modules of elasticity in compression of which is identical with or smaller than the modules of elasticity of the layer (3).      This printing element or blanket is applicable in any types of offset printing machines.
Patent CA-2039826-A1 (CA)
Title: Spiro bridged and unbridged heterocyclic compounds
Inventor: FISHER ABRAHAM
IPC: A61K31/445
Filed: 1991-04-04
Abstract: Compounds (I) and (II), including enantiomers, racemates and acid addition and quaternary salts, are for treating diseases of the central and peripheral nervous system, (see formula I and II) wherein in formula (I) Q is (CH2)m or C(CH3)2 attached to the 1',4' or 1',5' positions of the six-membered ring (m = 1, 2 or 3.) and in formula (II) Q is two hydrogen atoms, (CH2)m or C(CH3)2 (m = 1, 2 or 3) and n and p are each independently 0, 1, 2 or 3, provided that n + p = 2-3; R° is hydrogen, methyl or OH; (see formula III) is (see formula IV), (see formula V), (see formula VI or VII) R and R' are independently H, NH2, NH-C1-6-alkyl, N(C1-6-alkyl)2, C1-6-alkyl, C2-6-alkenyl, C2-6-alkynyl, C3-7- cycloalkyl, C1-6-alkyl substituted by 1-6 halogen atoms, HO- C1-6-alkyl, C1-6-alkoxy, C1-6-alkylthio, C1-6-alkoxy-C1-6-alkyl, carboxy-C1-6-alkyl, (C1-6-alkoxy)carbonyl-C1-6-alkyl, amino-C1-6-alkyl, mono-(C1-6-alkyl)amino-C1-6-alkyl, di-(C1-6-alkyl)amino-C1-6-alkyl, 2-oxo-pyrrolidin-1-yl-methyl, Ar, di(Ar)methylol, or (Ar)1-2C1-6 alkyl, or R' may be C1-6-alkanoyl or Arcarbonyl; and Ar denotes Ph optionally substituted by 1-3 of halogen, C1-6-alkyl, C1-6-alkoxy and GF3, subject to certain provisos.
Patent CA-2040039-A1 (CA)
Inventor: HENSEL ROBERT D
IPC: C23C14/08
Filed: 1991-04-09
Abstract: SURFACE COVERING WITH INORGANIC WEAR LAYER                 Abstract of the Disclosure A surface covering is a laminate including a hard inorganic wear layer deposited on a support by a reduced pressure environment technique such as ion assisted physical vapor deposition.  The support may be selected from metal foils, films or sheets and plastics, rubbers or mineral/binder systems.  The preferred sup-port materials include organic materials.  The wear layer is between 1 micron and 25 microns in thickness and has a CIE LAB value of total Delta E of less than 12.  Preferably, the wear layer is deposited on the sup-port at a temperature of less than 175°C.
Patent CA-2040493-A1 (CA)
Title: Electric connector terminal, primarily a so-called isdn-plug, and a method of manufacturing contact strips therefor
Inventor: KJELDAHL POUL
IPC: H01R13/26
Filed: 1991-04-15
Abstract: In certain connector plugs use is made of contact strips (13) mounted next to each other such that at one end they form exposed contact springs (8), while at their other ends they have a loop portion (14) provided with a V- or U-shaped recess (16) for connection with a connector wire. the dimensions are rather narrow, and there is hardly room for two such recesses in each loop portion. However, there is an expressed demand for connecting two wires to some of the contact strips, and according to the invention this is made possible by shaping each strip (13) with two loops (14) mutually spaced in the longitudinal direction of the strip, where there is better room than in the width or height direction. With conventional shaping technique it is difficult to provide two loops (14) on one contact strip (13), but the invention comprises a method, which makes this possible, viz. by arranging for an active feeding of strip material to the loop areas from both sides of each of these.
Patent CA-2043874-A1 (CA)
IPC: B23B31/12
Filed: 1991-06-04
Abstract: A keyless chuck (10; 301) comprises a jaw housing (28; 311) with jaws (32; 333, 335, 337) which are slidably mounted in guideways (40; 319, 321, 323) between a rearward opened position and a forward closed position.  A jaw thrust member (34; 345) is coupled to the jaws and is slidably mounted in the jaw housing to apply a thrust force to the jaws and to maintain the jaws in the same relative axial location.  A nut (42; 355) is fixed to the jaw housing and has a threaded opening (46; 357) coaxial with the chuck axis (Ax).  A threaded spindle (48; 305) is engaged in the nut opening and is movable forwardly to apply clamping force to the jaws and rearwardly to remove clamping force.  The spindle preferably engages the jaw thrust member through a small area contact patch (72; 401) to limit operating friction.  The jaws either may be opened and closed responsive to rearward and forward movement of the spindle respectively or to simplify loading of a bit in the chuck, may be spring biased forwardly to a closed position (self-centering) and thus not movable responsive to movement of the spindle.  A lock mechanism (22, 104, 42; 309) is preferably provided to limit relative rotation between the nut and spindle to prevent the application of excessive clamping force and to limit removal of clamping force.  The lock mechanism also preferably permits incremental self-tightening when in the locked position through an automatic tightener (397) and through the sizing and spacing of two sets of teeth (373, 375) to limit the application and removal of clamping force on a drill bit.  To limit the run out in a finished chuck, deformable (during assembly) interfaces (204; 401) are preferably provided between the jaw housing and nut and between the spindle and jaw thrust member (stop).  To further enhance the accuracy of assembly and to reduce run out, the spindle and nut preferably have a smoothed walled interface (415, 417) to accurately control coaxial alignment of the nut and spindle.
Patent CA-2045944-A1 (CA)
IPC: G02B17/08
Filed: 1991-06-28
Abstract: An  optical  system having  a  substantially  flat  image field is disclosed.  The optical  system is formed from optical  subsystems wherein  an  input  optical  subsystem forms an intermediate image which is the object of an output  optical  system.   The  intermediate  image  has  a curvature  which  compensates  that  from  the  remaining optical  components  of  the  system  to  result  in  a substantially  flat  image  for  the  optical  system. Preferably,   the   optical   elements   preceding   the intermediate image and the optical elements succeeding the intermediate image are separately corrected for odd aberrations.    The   optical   elements   preceding   the intermediate image and the optical elements succeeding the  intermediate  image  compensate  for  each  other  and result in a substantially aberration free flat image for the optical  system.   The  optical  system  preferably contains an input optical subsystem and an output optical subsystem  wherein  the  input  optical  subsystem  is  a catadioptric system and wherein the output optical system is a dioptric system.  Most preferably the input optical system is a 1X catadioptric system and the output optical system is an NX dioptric system.  The optical systems of the  present  invention  are  used  for  subquarter  micron photolithography tools for microelectronic fabrication, such as scanners and steppers.
Patent CA-2046175-A1 (CA)
Title: Fence row cleaner
Inventor: HEISKELL MERLE L
IPC: A01B39/18
Filed: 1991-07-04
Abstract: I.  ABSTRACT OF THE DISCLOSURE:    This invention is a owing machine which is to be hitched to the back of an agricultural tractor. The primary purpose of the invention is to cut and clean vegetation and debris from along agricultural fence rows. The cutting assembly of the mowing machine includes flails which are rapidly rotated and are made from fabric reinforced rubber. The flails are flexible and are about two feet long, about three-fourth of an inch thick, about three inches wide, and weigh about five pounds. The invention may be used to cut and removed vegetation and debris from under fence rows since the flails are flexible and easily mow around fence posts without damaging either the posts or the flails. The cutting assembly can be positioned so that a plane in which the cutting flails rotate is either inclined or declined to match the inclined slopes of embankments and declined slopes of drainage ditches.
Patent CA-2048217-A1 (CA)
Inventor: BOYLE STEPHEN J
IPC: H04Q3/62
Filed: 1991-07-31
Abstract: A method and apparatus for holding a line busy from which a party has disconnected and providing an indication to the other party that the first party has hung up. The invention operates by receiving a call in a telephone switching office from a first subscriber on an incoming line destined for a second subscriber, storing an indication signal signifying that the call has been received; in case the first subscriber has hung up, accessing the indication signal, and as a result sending a signal to the second subscriber which is indicative that the first subscriber has hung up. Such systems are useful in emergency call handling systems, such as 911 emergency call systems.
Patent CA-2048556-A1 (CA)
Inventor: HENNESSY ARNOLD
IPC: E03D5/00
Filed: 1991-08-07
Abstract: A vacuum assisted toilet is described wherein a vacuum is applied to a toilet bowl outlet during flushing, which avoids malfunctions that could allow sewer gas to escape,  and which uses flushing water effectively.   The toilet bowl outlet includes upper and lower trap devices (40,44, Fig. 5) coupled by a trapway (42), with the lower trap device forming an unobstructed air passage when no water is moving therethrough but which includes a trapping region (64) that completely fills with water and forms an airflow barrier during  flushing.   The vacuum source  includes a container (72, Fig. 1) in the toilet tank, with the container fixed in place in the tank to lie stationary therein, and with an  ordinary  flush  valve  (23)  lying  outside  the container, so substantially the only part of the toilet that moves during flushing is the long developed and reliable flush valve.  A baffle (110) separates a first tank portion (114)  which holds the container and flush valve,  from a second tank portion (116) which holds an inlet valve.  The top (118) of the baffle lies a plurality of centimeters below the high water level (16), so that a lot of water passes into the toilet bowl at the beginning of flushing.
Patent CA-2051602-A1 (CA)
Inventor: BROWN PETER F
IPC: G10L15/06
Filed: 1991-09-17
Abstract: A method and apparatus for modeling words based on match scores representing (a) the closeness of a match between probabilistic word models and the acoustic features of at least two utterances,  and (b) the closeness of a match between word models and the spelling of the word.   A match score is calculated for a selection set of one or more probabilistic word models.  A match score is also calculated   for   an   expansion   set   comprising   the probabilistic word models in the selection set and one probabilistic word model from a candidate set.   If the expansion  set match  score  improves  the  selection  set match score by a selected nonzero threshold value, the word is modelled with the word models in the expansion set.  If the expansion set match score does not improve the selection set match score by the selected nonzero threshold value, the word is modelled with the words in the selection set.
Patent CA-2052531-A1 (CA)
Title: Process and installation for the continuous metallization of a spread fibre sliver
Inventor: GOFFETRE GERARD
IPC: C23C14/56
Filed: 1991-09-30
Abstract: DESCRIPTIVE ABSTRACT            In order to coat with a uniform metal deposit the fibres of slivers to be used in the production of composite materials with a metallic or non-metallic matrix, it is proposed to use a spread fibre sliver (30) wound onto a feed spool (28) with an interpolated sheet (32). In order to avoid the deformation of the spread sliver, the latter is unwound by pulling on the interpolated sheet by means of an inter-polated sheet receiving spool (34) driven by a motor (M1).  Thus, the sliver travels by gravity in front of metallization means, such as rotary magnetron cathodes (40a, 40b).  It is then rewound, together with a second interpolated sheet (46) onto a spool (42) driven by a motor (M2) via a brake (43) having a very limited torque.         (Single drawing)
Patent CA-2057854-A1 (CA)
Title: Pdgf .alpha.-receptor
Inventor: KELLY JAMES D
IPC: C12N5/10
Filed: 1990-05-21
Abstract: Isolated DNA molecules that encode a novel PDGF receptor are disclosed. The receptor binds the AA, AB and BB isoforms of PDGF with high affinity. Cells transfected or transformed with the DNA molecules are also disclosed. The cells can be used within methods for detecting PDGF agonist or antagonist activity in a test compound.
Patent CA-2058598-A1 (CA)
Title: Specific dna sequences related to an ibdv protein including vectors, hosts and vaccines
Inventor: VAKHARIA VIKRAM
IPC: C12N15/09
Filed: 1991-12-30
Abstract: ABSTRACT OF THE DISCLOSURE         A biologically pure polypeptide comprises an amino acid sequence of 30 to 1012 amino acids and has the antibody binding characteristics of at least one U.S. variant IBDV VP2 protein.  Biologically pure RNA and DNA segments comprise sequences encoding at least one copy of the biologically pure polypeptide.  A recombinant vector comprises at least one copy of a DNA segment encoding 1-20 polypeptides having the antibody binding characteristics of at least one U.S. variant of the IBDV VP2 protein, and optionally, the VP3 and VP4 proteins, as well.  A host is transformed with the recombinant vector.  A method of protecting poultry from IBD comprises administering to the poultry an amount of the DNA or the recombinant vector effective to mount an immunological response against IBDV.
Patent CA-2060053-A1 (CA)
Title: Process for producing ethylene polymers
Inventor: TAKAHASHI TADASHI
IPC: C12N5/071
Filed: 1992-01-27
Abstract: ABSTRACT OF THE DISCLOSURE       A  process  for  preparing  an  ethylene  polymer which comprises polymerization of ethylene or  ethylene and  an  .alpha.-olefin  having  3  to  10 carbon atoms over a catalyst comprising the following components (A) and (B): (A)  which is a solid component for a Ziegler catalyst obtained  by  bringing  (2)  into  contact  with  (1)  and bringing the contact product into contact with  (3)  and (4) wherein (1) is a solid catalyst component comprising (i) - (iii) where (i)o MgX2, (ii): titanium tetraalkoxide and/or a polytitanate ester,  (iii): a polymeric silicon compound, having a formula of   R1 being a hydrocarbyl group,  (2)  is a halogenated Si compound;  (3) is a halohydrocarbon;  (4) is an organo-Al compound; and (B) is an organo-Al compound.        An  ethylene polymer  having  a moderately  broad molecular weight distribution can be prepared in a high activity by use of the catalyst.  The ethylene polymer is suited for the production of fibers or tapes.
Patent CA-2060901-A1 (CA)
Title: Multilayer organic nonlinear optical crystal and process for producing the same
Inventor: GOTOH TETSUYA
IPC: G02F1/065
Filed: 1991-04-12
Abstract: An organic nonlinear optical crystal having a secondary nonlinear optical effect, a process for producing the same, and various secondary nonlinar optical elements prepared therefrom. This crystal is a laminated organic nonlinear optical crystal comprising a plurality of noncentrosymmetrical organic single crystal layers, wherein the single crystal layers satisfy the following requirements: (1) al least two of the single crystal layers are in optical contact with each other, (2) at least two of the noncentrosymmetrical organic single crystal layers in optical contact with each other have refractive indices different from each other, and (3) at least one of the single crystal layers has an optically smooth crystal face.
Patent CA-2062751-A1 (CA)
Inventor: MARKWITZ WERNHARD
IPC: H04L9/32
Filed: 1990-04-05
Abstract: A public communication system for a plurality of communication services (ISDN) has an arrangement for the authentification of the subscriber stations (TLN A, TLN B) for the key transmission. For a first security level this authentification arrangement has an arrangement for monitoring the time frame (ZU) of the key transmission and/or an arrangement (A) for the indication of the agreed key in reduced form at the subscriber end, and for a second security level a key management station (SMZ) for authenticated traffic handling.
Patent CA-2063456-A1 (CA)
Title: Flame retardant blends of polycarbonate, abs and a polyalkylmethacrylate having increased weld line strength
Inventor: GAGGAR SATISH K
IPC: C08K5/521
Filed: 1992-03-19
Abstract: (8CP12043) FLAME RETARDANT BLENDS OF POLYCARBONATE, ABS AND POLYALKYLMETHACRYLATE HAVING INCREASED WELD LINE STRENGTH        ABSTRACT OF THE DISCLOSURE          Flame  retardant  polymer blend  compositions exhibiting  increased weld  line  strength  comprise a polycarbonate polymer,  an ABS resin,  a phosphate flame retardant compound and a polyalkylmethacrylate.  Preferred polyalkylmethacrylates  comprise  polymethylmethacrylate homopolymer  and copolymers thereof  with at least  one C1-C4 alkyl acrylate.
Patent CA-2064275-A1 (CA)
Title: Anticorrosive coating composition
Inventor: TAKIMOTO MASAAKI
IPC: C09D163/00
Filed: 1992-03-27
Abstract: ABSTRACT OF THE DISCLOSURE An  anticorrosive  coating  composition,  comprising 0.05 to 20% by weight of melamine cyanurate, 5 to 30% by weight of a thermosetting resin, O to 20% by weight of a curing  agent,  and  40  to  95%  by  weight  of  a  solvent (providing that the total amount of said components is 100% by weight).   It obviates the necessity for incorporating silica  a  hydrophilic  resin,  and  an  electes  conductive pigment and allows control of the density of electrification points  in  a  film  of  a  coating  material  using  the composition.
Patent CA-2064551-A1 (CA)
Title: Anti-scuff bottle packing method and apparatus
Inventor: SWAN LARRY G
IPC: B65B21/14
Filed: 1992-03-31
Abstract: F -6147-L(SGC) ABSTRACT      Method and apparatus for reducing scuffing damage to bottle labels during case packing operation are disclosed in which the flow of bottles to a case packer is controlled by a bottle stop having at least one movable bearing surface.