baber/WOPTO huggingface dataset:
Patent CA-2056043-A1 (CA)
Title: Flow restrictor for mud lubricated earth drilling motors
Inventor: WENZEL KENNETH H
IPC: E21B4/02
Filed: 1991-11-22
Abstract: A flow restrictor for a mud lubricated earth drilling motor consisting of a first seal support non-rotatably coupled to an outer housing and a second seal support non-rotatably coupled to an inner tubular member which is telescopically received within the outer housing. The first seal support having a first seal face and the second seal support having a second seal face . The first seal support and the second seal support are axially movable.      A plurality of springs engage the first seal support to exert a biasing force bringing the first seal face into sealing engagement with the second seal face to form a mechanical seal, having a first side adjacent the outer housing and a second side adjacent the inner tubular member. A first fluid flow passage extends from the interior drilling mud flow passage of the inner tubular member the first side of the mechanical seal. A second fluid flow passage extends from the second side of the mechanical seal to exterior of the outer housing. At least one groove is provided across the first seal face and the second seal face, extending from the first side to the second side of the mechanical seal, such that a continuous flow of drilling mud passes through the groove and is vented to the exterior of the outer housing via the second fluid flow passage.
Patent CA-2056691-A1 (CA)
Title: Control system for liquefied gas container
IPC: G05D16/00
Filed: 1991-11-29
Abstract: A control apparatus for maintaining constant the temperature and pressure of the vapor phase in a very low-temperature controlled liquefied gas container includes a pressure sensor, a temperature sensor, two electromagnetic valves, and a refrigerator. When operation of the refrigerator disturbs measurement at low temperature, the refrigerator is stopped. Gas vaporizes from a liquid phase, and gas is discharged from the container. In this manner, the temperature and pressure of the liquefied gas in the container can be maintained constant. After measurement, the liquid level in the container will be lowered by evaporation, so that the liquefied gas is supplied to the container. In this manner, the liquid level in the container can be maintained constant.
Patent CA-2057108-A1 (CA)
Inventor: JAMES KELVIN B
IPC: A61F2/74
Filed: 1991-12-05
Abstract: This invention relates to an above knee prothesis which employs a hydraulic damper to passively regulate the angular velocity or rotation of the artificial knee joint. A programmed microprocessor recognizes common gait patterns from information received from strain and knee angle sensors on the prosthesis. The microprocessor reacts at various transition points in the gait by activating a motor which in turn adjusts a valve assembly in the damper. The valve assembly is capable of variably and separately damping the knee joint motion in each of flexion and extension at the same time. Gait is improved because of the improved extent of control of knee action. In addition, distinct routines such as stair descending and sitting down can also be practised. <IMAGE>
Patent CA-2059696-A1 (CA)
Inventor: KREPELA JOSEPH
IPC: F02D17/04
Filed: 1992-01-20
Abstract: An engine shutdown valve comprises a housing and a gate movable within a housing between a first position where the air flow through the shutdown valve is substantially unrestricted to a second position where the opening is restricted thereby stopping air flow. The gate is pivotable about an axis and a drive is located concentrically about the axis to rotate with the gate.      The drive has a recess which is engageable by a piston movable between a first position where the gate is held in its latched position and a second position out of engagement with the recess so as to allow the gate to move to a position where the air passageway is closed. The piston assembly is located substantially wholly within the housing with only the piston of the piston assembly extending therefrom. The housing is divided into two halves joined together with cap screws having axes transverse to the axis of rotation of the gate.
Patent CA-2059784-A1 (CA)
Title: Attachment assembly for excavation teeth
Inventor: SMITH HARRY
IPC: E02F9/28
Filed: 1992-01-23
Abstract: An attachment assembly for securing large excavation teeth on large earth excavation equipment including an excavation tooth, an adaptor having a tapered nose piece at one end thereof for carrying the tooth and defining means rearwardly of the nose piece for securing the adaptor to the excavation implement, a pin for securing the tooth in place on the nose piece and a wear cap adapted to be carried by an engage the adaptor so as to abut a rear portion of the tooth for reducing wear of the adaptor during use. The wear cap defines a forward tooth abutment surface, a first inclined lower surface adapted to abut a first portion of the adaptor rearwardly of the nose piece, a second inclined lower surface spaced from the first inclined lower surface and adapted to abut a second portion of the adaptor and an opened channel disposed between the first and second inclined surfaces and extending transversely through the wear cap. The channel defines a continuously curvilinear transverse inner wall within the wear cap and is adapted to receive a correspondingly configured transversed rib formed on the adaptor such that upon transversely sliding of the wear cap over the rib, the first and second lower inclined surfaces abut the first and second portions of the adaptor and the forward tooth abutment surface of the wear cap is disposed substantially normal to the tooth. The tooth abutment surface defines a pair of locking projections thereon which are received in a pair of similarly configured channels formed in the base of the excavation tooth to interlock the tooth and wear cap and prevent relative lateral movement therebetween.
Patent CA-2060403-A1 (CA)
Title: Method and apparatus for forming a fog screen and image-forming method using the same
Inventor: KATAOKA AKIRA
IPC: G03B21/60
Filed: 1992-01-30
Abstract: ABSTRACT OF THE DISCLOSURE    A method and apparatus for forming a fog screen for use in the projection for display of an optical image which comprises disposing a pair of substantially parallel air curtains and blowing a fog into the space defined by and between the air curtains.  The fog screen is high and uniform in density and can be utilized for forming a well-defined image thereon that is free from distortions or interruptions.
Patent CA-2061878-A1 (CA)
Title: Information processing apparatus
Inventor: SAITO TAKASHI
IPC: B41J2/175
Filed: 1992-02-26
Abstract: A printer apparatus for a computer. The printer apparatus is suitable for integral mounting in the computer. The printer apparatus includes a move mechanism in which the ink tank moves relative to the recording head, and the distance of movement (i.e. scan speed) for the ink tank is less than the distance of movement for the recording head. This feature allows the capacity of the ink tank to be increased without increasing the width of the printer. The lower scan speed of the ink tank also means that a smaller motor may be utilized.
Patent CA-2062051-A1 (CA)
Title: Chewing gum containing compositions for controlled release of flavor bearing substances and process for producing same
Inventor: RUTHERFORD HOWARD J
IPC: A23G4/20
Filed: 1992-02-28
Abstract: ABSTRACT OF THE DISCLOSURE     Described is a chewing gum comprising a chewing gum base having dispersed therein, separately, a multiplicity of sweetener bearing polymeric particles and/or flavor-bearing polymeric particles, said polymeric particles further comprising:     (a)  at least one water-soluble normally solid polymer: (b)  at least one water-insoluble normally solid polymer;      and either (c)   (i)   at least one flavor composition a substantial portion of which is incorporated in the water-insoluble polymer and a substantial portion of which is incorporated in the water-soluble polymer; and/or (ii)   at least one sweetener composition a substantial portion of which is incorporated in the water-insoluble polymer and a substantial portion of which is incorporated in the water-soluble polymer;   the water-soluble polymer and the water-insoluble polymer being physically associated with each other associated in such a manner that one is in the form of a multiplicity of discrete entities in a matrix of the other.  Also described is a process for preparing such a chewing gum.
Patent CA-2062414-A1 (CA)
Title: A circuit for interconnecting integrated semiconductor circuits
Inventor: HORITA SATOMI
IPC: H03K19/0185
Filed: 1992-03-06
Abstract: An interconnection circuit has a first circuit portion in one of two integrated semiconductor circuits to be connected, for limiting the amplitude involtage of the signal output from the one circuit, and has a second circuit portion in the other one of the two circuits, for discriminating the logic level of the signal input thereinto based on a threshold level set at a level intermediate of the limited amplitude. The amplitude of the logic signal transferred between the two circuits is thus compressed, thereby decreasing a delay time for the signal to transfer between the two circuits.
Patent CA-2062834-A1 (CA)
Title: Procede biologique pour la reduction volumique et la solidification des boues resultantes des traitements des eaux
Inventor: NECULCE DRAGOS
IPC: C02F11/02
Filed: 1992-03-12
Abstract: PROCEDE BIOLOGIQUE POUR LA REDUCTION VOLUMIQUE ET LA SOLIDIFICATION DES BOUES RESULTANTES DES TRAITEMENTS DES EAUX Dans le traitement des eaux, un mélange eau-matières en suspension fortement débalancé vers les matières en suspension est connu comme "boue". Il y a des boues naturelles (telles que le lizier de porc), mais la plupart des boues est générée suite aux traitements de séparation des matières en suspension (soit une séparation biologique -ex. réacteurs biologiques, soit une séparation physico-chimique par floculation-flottation). Ces boues on souvent un aspect très fluide et leur grand volume constitue un problème de pollution pour les eaux souterraines et une source de nuisance pour l'environnement. Des traitements modernes de ces boues sont réalisés grâce aux installations complexes (telles que les pressoirs aux sabots ou les filtres-presse) qui sont très efficaces pour la réduction en volume, mais leur prix est assez élevé et, en plus, pour les boues organiques le produit résulté est non-traité biologiquement, ce qui risque de créer des sources secondaires de pollution (y compris développement de pathogènes). Dans la présente invention les boues sont traitées biologiquement (donc le produit final du traitement des boues organiques diffère profondément des boues initiales et il est beaucoup enrichi en microorganismes nonpathogènes utilisés dans le traitement, ce qui empèche le dévelppement des pathogènes); simultanément avec l'activité microbienne, il y a une réduction en volume, une intense perte de l'eau et une transformation des boues en matière solide. La perte en eau ne se réalise pas par filtration, mais par évaporation, donc il n'y a pas d'éffluent + pollué sortant de l'installation.
Patent CA-2063941-A1 (CA)
Title: Use of 4-amino-1-(2-pyridyl)piperidines for the preparation of a medicament for the treatment and prophylaxis of conditions deriving from disorders of the serotoninergic systems mediated by 5-ht3 receptors
Inventor: LE FUR GERARD
IPC: A61K31/445
Filed: 1992-03-25
Abstract: IN THE CANADIAN PATENT & TRADEMARK OFFICE PATENT APPLICATION entitled: Use of 4-amino-1-(2-pyridyl)piperidines for the preparation of a medicament for the treatment and prophylaxis of conditions deriving from disorders of the serotoninergic systems mediated by 5-HT3 receptors.   in the names of: Gérard LE FUR                  Alberto BLANCHETTI Antonina GIUDICE Tiziano CROCI Philippe SOUBRIE Assignee:     ELF SANOFI                    ABSTRACT OF THE DISCLOSURE   The present invention concerns the use of 4-amino-1-(2-pyridyl)piperidines of general formula (I')   (I') wherein R' represents hydrogen, a halogen atom, a methyl, methylthio, trifluoro-methyl, trifluoromethylthio, (C1-C3)alkoxy, trifluoromethoxy, 2,2,2-trifluoro-ethoxy, or phenoxy group optionally substituted with a halogen atom, a trifluoro-methyl, (C1-C3)alkyl, (C1-C3)alkoxy, (C1-C3)alkylthio, or cyano group, or of a pharmaceutically acceptable salt thereof, for the preparation of a medicament for the treatment or prophylaxis of those conditions deriving from disorders of the serotoninergic systems wherein a serotoninergic action selectively mediated by the 5-HT3 receptors is required, e.g. affective disorders, anxiety, psychotic troubles, constipation.
Patent CA-2064481-A1 (CA)
Inventor: UENO RYUJI
IPC: C07D407/12
Filed: 1992-03-31
Abstract: The present invention provides a method of preparing .alpha.,.beta.-unsaturated ketolactones which are useful in the production of prostaglandins having one or more halogen substituent(s) at position 16 or 17 in high yield, in which, a dimethyl (2-oxoalkyl) phosphonate having one or more halogen substituents (as a starting material) is reacted with a bicyclolactone aldehyde in the presence of an alkali metal hydride and a zinc compound.
Patent CA-2068060-A1 (CA)
Inventor: APPEL JAMES J
IPC: G02B26/12
Filed: 1992-05-06
Abstract: In an optical output device wherein a beam of light is generated and focused to a spot upon an image plane, such as a photoreceptor in a xerographic printingapparatus, an method for controlling the position of the spot in the slow scan direction of the image plane including the steps of generating a beam of light, deflecting the beam of light by way of an optical beam deflecting element such that the optical beam deflecting element deflects the path of the beam of light by anamount that is determined by the wavelength of the light beam, and varying the wavelength of the beam of light such that the amount that the beam of light is deflected by the optical beam deflecting element is varied to achieve control of the position of the spot at which the beam of light is incident on the image plane in the slow scan direction. The invention may be embodied in an apparatus which includes a light source capable of emitting the beam of light at a selected one of at least two selectable wavelengths and prism for refracting the beam of light an amount which depends on the wavelength of the beam of light, the amount of refraction determining the position of the spot in the slow scan direction on the image plane. The light source may be of the solid state laser type, and may emit a plurality of beams of light the spots from which may be individually or together selectively positioned in the slow scan direction on the image plane. The beam deflecting element may be a semiconductor prism, for example of AlGaAs, and have a controllable bias applied thereto to allow further control of spot positioning.
Patent CA-2074255-A1 (CA)
Inventor: KRUEGER DENNIS L
IPC: B29C48/08
Filed: 1991-01-07
Abstract: Des pellicules inélastiques à composantes multiples sont caractérisées par au moins un élément central élastomère (2) et une matrice inélastique (3), de préférence fabriqués par coextrusion. On produit une pellicule composite élastomère texturée en étirant ladite pellicule, que l'on laisse ensuite reprendre sa forme. La pellicule composite est utile dans des applications vestimentaires.
Patent CA-2078941-A1 (CA)
Title: Compound semiconductor device
Inventor: NAKAGAWA YOSHIKAZU
IPC: H01L21/338
Filed: 1992-09-23
Abstract: A compound semiconductor device includes an undoped semiconductor layer; a doped semiconductor layer formed on the undoped  semiconductor  layer  and  having  smaller  electron affinity than the undoped semiconductor layer, impurities being doped in the doped semiconductor layer; a gate electrode formed on the doped semiconductor layer; and a source electrode and a drain electrode respectively formed at both sides of the gate electrode, wherein an impurity concentration of the doped semiconductor layer is selected such that a portion of the doped semiconductor layer located immediately below the gate electrode is not completely depleted in a state in which a gate voltage is not applied to the gate electrode, and is completely depleted in a state in which a negative voltage for minimizing a noise figure is applied to the gate electrode.
Patent CA-2080581-A1 (CA)
Title: Styryl-substituted monocyclic and bicyclic heteroaryl compounds which inhibit egf receptor tyrosine kinase
Inventor: SPADA ALFRED P
IPC: C07D209/12
Filed: 1991-04-16
Abstract: Methods of inhibiting cell proliferation in a patient suffering from such disorder comprising the use of a styryl-substituted heteroaryl compound wherein the heteroaryl group is a monocyclic ring with 1 or 2 heteroatoms, or a bicyclic ring with 1 to about 4 heteroatoms, said compound optionally substituted or polysubstituted, with the proviso that when said ring is polysubstituted, the substituents do not have a common point of attachment to said ring, and those compounds wherein no substituent on the heteroaryl group is a carboxy group or an ester group, and pharmaceutical compositions comprising such compounds.
Patent CA-2081172-A1 (CA)
Title: R.j.c. bases
Inventor: CARDONI RONALD J
IPC: A63B69/00
Filed: 1992-12-21
Abstract: Abstract Carriage bolt is a improved anchored device to secure a baseball base to the ground,by means of hammering the head of the bolt down evenly to the ground.Once anchored the bolt will not protrude above the ground.The bolt is placed through a hole 6.35 cm away from the edge of the base which has ample room to hammer.This is the only baseball base in amateur sports to have a handle to pull the anchoring device out of the ground making it safe and easier for players of all ages.Once this new improved baseball base is assembled it will be a one piece base.
Patent CA-2082988-A1 (CA)
Inventor: JUNGOWSKI WIKTOR M
IPC: F01N13/16
Filed: 1992-11-16
Abstract: A device for the prevention of noise generation during the expansion of high pressure fluid (i.e. gas or steam) stream. The preventer comprises a housing which consists of an inner wall and a larger outer wall. The inner and outer walls both have the shape of a hemisphere and are perforated to allow fluid to flow through them. An enclosed space between both hemispheres contains a granular packing which creates a tortuous path for the flowing fluid. The preventer may find application in such installations as compressor stations (as a blowdown noise suppressor), gas metering stations and power plants.
Patent CA-2085275-A1 (CA)
Title: Hydrogenated nitrile rubber laminates
Inventor: MARSHALL ALEXANDER J
IPC: C09D133/18
Filed: 1992-12-14
Abstract: IMPROVED HYDROGENATED NITRILE RUBBER LAMINATES               Abstract of the Disclosure A process is provided for improving in an at least two layer laminate the adhesion of a first rubbery layer containing hydrogenated butadiene-acrylonitrile polymer to a second rubbery layer containing one of butadiene-acrylonitrile rubber, hydrogenated butadiene-acrylonitrile polymer or fluoroelastomer polymer by incorporating into said first rubbery layer an adhesion improving compound selected from bis[alkoxysilyl-alky]-tetrasulphides and bis[alkoxysilyl-aryl]-tetrasulphides.
Patent CA-2085338-A1 (CA)
Title: Weighing apparatus
Inventor: KELLENBACH ARTHUR
IPC: G01G21/23
Filed: 1991-06-13
Abstract: Weighing apparatus for the electronic weighing of livestock and other applications consists of an elongated weight-receiving structure (20) at each end of which an orientated transducer (23, 24, 60) is mounted with its axis of orientation intersecting the longitudinal axis of the structure. The orientated transducer may comprise a bending beam weighbar (23) or a pair of load cells (60).
Patent CA-2085868-A1 (CA)
Title: Photosensitive composition
Inventor: KANAZAWA DAISUKE
IPC: G03F7/023
Filed: 1992-12-18
Abstract: ABSTRACT OF THE DISCLOSURE             Disclosed herein is a photosensitive composition comprising:         (A)   5 to 60 wt% of an o-quinonediazide compound; (B)   0.05 to 10 wt% of an s-triazine compound (C)   0.01 to 10 wt% of a dye for changing the color tone by the interaction with the photodecomposition product of the said s-triazine compound;         (D)   30 to 90 wt% of a novolak resin containing less than 5 wt% of phenols; and (E) 1 to 60 wt% of a vinyl-based polymer having at least a phenolic hydroxyl group.
Patent CA-2087194-A1 (CA)
Title: Targeted drug delivery via phosphonate derivatives
Inventor: BODOR NICHOLAS S
IPC: A61K47/48
Filed: 1991-07-12
Abstract: The invention provides compounds of formula (I) or a pharmaceutically acceptable salt thereof, wherein [D] is the residue of a drug having a reactive functional group, said functional group being attached, directly or through a bridging group, via an oxygen-phosphorus bond to the phosphorus atom of the moiety (I'); R1 is C1-C8 alkyl, C6-C10 aryl or C7-C12 aralkyl; R2 is hydrogen, C1-C8 alkyl, C6-C10 aryl C4-C9 heteroaryl, C3-C7 cycloalkyl, C3-C7 cycloheteroalkyl or C7-C12 aralkyl; and R3 is selected from the group consisting of C1-C8 alkyl; C2-C8 alkenyl having one or two double bonds;  (C3-C7 cycloalkyl)-CrH2r- wherein r is zero, one, two or three, the cycloalkyl portion being unsubstituted or bearing 1 or 2 C1-C4 alkyl substituents on the ring portion; (C6-C10 aryloxy)C1-C8 alkyl; 2-, 3- or 4- pyridyl; and phenyl-CrH2r-wherein r is zero, one, two or three and phenyl is unsubstituted, or is substituted by 1 to 3 alkyl each having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, halo, trifluoromethyl, dialkylamino having 2 to 8 carbon atoms or alkanoylamino having 2 to 6 carbon atoms. The compounds are adapted for targered drug delivery, especially to the brain.
Patent CA-2089136-A1 (CA)
Inventor: GUPTON FRANKLIN B
IPC: C07D491/048
Filed: 1993-02-09
Abstract: ABSTRACT OF THE DISCLOSURE           In one embodiment this invention provides a process for converting a pyridine-2,3-dicarboxylic acid diester to the corresponding cyclic anhydride directly, without any recovery and purification of the pyridine-2,3-dicarboxylic acid intermediate.  An important aspect of the invention process is the utility of pure pyridine-2,3-dicarboxylic  acid  diester  starting  matter.    A procedure for providing pure diester starting material is demonstrated.
Patent CA-2091776-A1 (CA)
Title: Liposome extrusion process
Inventor: COE ROYDEN M
IPC: B01J13/02
Filed: 1991-10-04
Abstract: A method of sizing liposomes by passing a suspension of liposomes through an aluminum oxide porous film under pressure is disclosed. In a preferred embodiment, the porous film is a branched type anodic aluminum oxide porous film. The process produces a population of liposomes substantially free of liposomes above a pre-determined maximum size useful in administering drugs or other bioactive agents, such as in the treatment of cancer or AIDS-related illnesses. Also disclosed for carrying out the method is an apparatus comprising one or more fitter assemblies for holding the aluminum oxide porous film in operational configuration (33), a pressurized supply vessel for supplying the suspension of liposomes under pressure to filter assemblies (31), and a receiving vessel for receiving the filtrate from the filter assemblies (32).
Patent CA-2092047-A1 (CA)
Title: Polysiloxanes
Inventor: VON GENTZKOW WOLFGANG
IPC: C08G18/61
Filed: 1993-03-19
Abstract: ABSTRACT           Polysiloxane compounds with the structure:                                         , where the following applies:          E  = epoxyfunctional remainder, Z  = photopolymerizable remainder, R1 = alkyl with 1 to 4 C atoms or phenyl, R2 = R1, E or Z.