baber/WOPTO huggingface dataset:
Patent CA-1296963-C (CA)
Title: Indwelling placement device with guard
Inventor: SAGSTETTER WILLIAM E
IPC: A61M25/06
Filed: 1988-07-28
Granted: 1992-03-10
Abstract: INDWELLING PLACEMENT DEVICE WITH GUARD               Abstract of the Disclosure An indwelling placement device (10) having an introducing needle (44) and a catheter (48) for infusing fluids into a blood vessel incorporates a guard (20) for shielding the needle (44) prior to extension from therewithin and for receiving the needle (443 upon retraction thereinto to preclude an operator inadvertently contacting the needle (44) after use.  Once retracted, the needle (44) cannot be extended from within the guard (20).  Upon retraction of the needle into the guard, a button (56) mates with the open end of a hollow hub of the needle (54) of the needle (44) to prevent outflow of residual blood therefrom.  A valve (62) is incorporated with the catheter (48) to preclude blood outflow from the catheter (48) upon withdrawal of the needle (44) and prior to attachment of an intravenous line for conveying a fluid to be intravenously administered.
Patent CA-1308549-C (CA)
Title: Fire hazard control
Inventor: HALTER ALAIN
IPC: A62D1/00
Filed: 1988-08-26
Granted: 1992-10-13
Abstract: ABSTRACT                  Fire hazard control.   The fire hazard control material disclosed wholly or mainly consists of particles of crushed vitreous material which bear a hydrophobic coating. Optionally the material contains one or more particulate adjuvants selected from salts and/or spherulized vitreous beads which bear a hydrophobic coating. Graphite particles may be used in addition to a salt. The median grain size of the crushed vitreous particles is preferably below 120 micrometres, for example in the range 25 to 35 micrometres.
Patent CA-1307683-C (CA)
Inventor: EGNER RONALD J
IPC: F16B37/00
Filed: 1988-11-07
Granted: 1992-09-22
Abstract: ABSTRACT OF THE DISCLOSURE            An improved nut is secured to an unthreaded stud which is inserted through a central bore in the nut. The bore includes a guide means which provides alignment guidance during sliding insertion of the stud into the bore.  The guide means preferably has an annular configuration with an inner diameter slightly larger than the diameter of the stud so that the initial insertion of the stud does not produce significant frictional resistance.  The bore of the nut further includes a helical thread, preferably a single thread turn, which is disposed in the bore axially distinct from the guide means and terminates within the bore adjacent the guide means.  The helical thread has a minor diameter smaller than the stud diameter and also projects radially inwardly into the bore further than the guide means.  The cold-forms a mating thread impression into the periphery of the stud and the resulting thread impression obstructs any vibrational retraction of the guide means to promote retention of the nut on the stud.
Patent CA-1328130-C (CA)
Title: Scrambling in digital communications network
Inventor: BALLANCE JOHN W
IPC: H04B10/035
Filed: 1988-11-28
Granted: 1994-03-29
Abstract: ABSTRACT OF THE DISCLOSURE           A passive, all optical communications network is provided in which a single optical source in a central station  serves  many  outstations   (eg  telephones  in customers' premises).   Time division multiplexed optical signals from a laser source are transmitted along a single optical fibre from a central station.  The signal is split between several secondary fibres at a first splitter (eg array of passive couplers)  and between further sets of fibres at a second set of splitters.  At this stage there are 120 individual fibres to customers' premises.  Digital speech or data is sent back to the central station by a laser in the customers' premises operating in a low duty-cycle mode.  The 120 data streams are interleaved at the branching points.
Patent CA-1333266-C (CA)
Inventor: DELANNOY FRANCIS
IPC: C07D301/32
Filed: 1988-12-21
Granted: 1994-11-29
Abstract: L'invention concerne un procédé pour séparer l'oxyde d'éthylène d'impuretés aldéhydiques à partir d'oxyde d'éthylène impur, par distillation dans une colonne de manière à ce que le courant liquide qui sort au bas de la colonne contienne l'eau initialement présente dans l'oxyde d'éthylène impur et de l'oxyde d'éthylène en quantité pondérale comprise entre 0,15 fois et 3 fois celle de l'eau, tandis que l'oxyde d'éthylène résultant de la séparation des impuretés aldéhydiques sort en haut de la colonne. L'invention concerne également l'application du procédé dans un procédé d'isolement de l'oxyde d'éthylène.
Patent CA-1328133-C (CA)
Title: Analog signal switching device for use in an optical memory device
Inventor: FUJI HIROSHI
IPC: G11B7/126
Filed: 1989-01-20
Granted: 1994-03-29
Abstract: ABSTRACT OF THE DISCLOSURE     An analog signal switching device for use in an optical memory device having a recording/erasing mode and a mode other than the recording/erasing mode is disclosed.          The switching device includes a source for producing a switch  control  signal  which  is  HIGH  during  the recording/erasing mode and LOW during the mode other than the recording/erasing mode.  An analog switch is provided for receiving a direct input analog signal and a held input signal and for  providing the direct input signal during the LOW state of the switch control signal, and the held input signal during the HIGH state of the switch control signal by a switching operation.   Further provided is a mask signal generator for generating a mask signal which covers a period during the HIGH state of the switch control signal so as to  cover a  period during the  switching operation  of  the  analog  switch,  and  a  gate  circuit controlled by the mask signal for allowing the direct input analog signal to pass therethrough during the absence of the mask signal and for preventing the held input signal to pass therethrough during the presence of the mask signal.          Thus, noise signals produced by the switching operation of the analog switch are eliminated.
Patent CA-1333907-C (CA)
Title: Alkyl aryl sulfones and method of preparing the same
Inventor: LEADER GORDON R
IPC: C07C319/20
Filed: 1989-03-09
Granted: 1995-01-10
Abstract: Alkyl aryl sulfones of the formula R-SO2-Ar-Yn, wherein Ar is an aryl compound, Y is a substituent on the aryl compound and R is alkyl or cycloalkyl, and liquid mixtures of positional isomers of the same are prepared by reacting an aryl compound of the formula Ar-Yn, with an alkyl sulfonic acid of the formula R-SO3H and a phosphorus reagent, preferably under heat.     Particularly good yields and pure products are obtained using phosphorus pentoxide.  Alkyl aryl sulfones produced by this method are a liquid mixture preferably containing at least two positional isomers, wherein no isomer is present in an amount of more than about 50% of the isomer mixture.
Patent CA-1328009-C (CA)
Title: Monitoring system for power lines and right-of-way using remotely piloted drone
Inventor: FERNANDES ROOSEVELT A
IPC: G01R15/14
Filed: 1989-03-21
Granted: 1994-03-22
Abstract: Application Of:  Roosevelt A. Fernandes For:  Monitoring System For Power Lines and Right-Of-Way Using Remotely Piloted Drone Abstract Of The Disclosure A monitoring system using a unique Remotely Piloted Drone with dual counter rotating propellers and carrying electric field sensing, thermal infra-red imaging, video imaging, acoustic and corona discharge sensing equipment.          The compact Remotely Piloted Drone flies along a power corridor and is maintained at a fixed distance from an outer phase conductor using on board electric field detection circuitry, video/infra-red imagery and an RF/laser altimeter.       The counter rotating, twin-turbo driven configuration for the propellers mounted on coaxial vertical shafts provides a highly stable platform, unlike conventional manned helicopters presently used for routine right-of-way patrols.  Dual, counter-rotating saucer-shaped auxiliary propellers provide a degree of stability far superior to a conventional helicopter, particularly in gusty winds.  On board sensors and video cameras would permit electric utilities an economic approach to right-of-way monitoring, inspection of frayed conductors or deteriorated splices through infra-red sensing, detection of cracked insulators through acoustic/corona sensors, monitoring of critical, thermally limiting spans and other monitoring functions.
Patent CA-1288930-C (CA)
Title: Fast-dissolving, non-caking, food grade sodium tripolyphosphate
Inventor: DICK CHRIS C
IPC: C01B25/41
Filed: 1989-04-26
Granted: 1991-09-17
Abstract: Abstract: FAST-DISSOLVING, NON-CAKING, FOOD GRADE SODIUM TRIPOLYPHOSPHATE A fast-dissolving, non-caking, food grade sodium tripolyphosphate is produced by spraying into a spray dryer an aqueous sodium orthophosphate feed liquor having an Na2O:P2Os ratio of from about 1.60 to about 1.67 containing potassium hydroxide or a soluble potassium salt in amounts to yield about 0.4% to 0.8% by weight potassium in the final product, heating the feed to at least 440°C to form sodium tripolyphos-phate, cooling the sodium tripolyphosphate and adding to it at least about 1% by weight moisture.
Patent CA-1322791-C (CA)
Title: Method of optically scanning an information plane and optical record carriers and scanning apparatuses suitable for use of said method
Inventor: SPRUIT JOHANNES H M
IPC: G11B7/24
Filed: 1989-05-23
Granted: 1993-10-05
Abstract: ABSTRACT: Method of optically scanning an information plane and optical record carriers and scanning apparatuses suitable for use of said method.     When scanning an optical record carrier with a diffraction-limited scanning spot (S), the size of the effective scanning spot (S') can be considerably reduced by utilising the energy distribution within the scanning spot (S) in combination with a non-linear optical layer (22) in the record carrier (1) so that the resolution is increased both during reading and during writing. Fig. 6.
Patent CA-1312383-C (CA)
Title: Spike transmission for neural networks
Inventor: TOMLINSON MAX S JR
IPC: G06N3/04
Filed: 1989-05-29
Granted: 1993-01-05
Abstract: INVENTOR: Max Stanford Tomlinson Jr.            INVENTION: Spike Transmission for Neural Networks ABSTRACT of the INVENTION   Pulse trains are utilized for the transmission of information in a neural network. A squash function is acheived by logically OR'ing together pulsed outputs, giving f(?) approximately 1-e-?. For Back Propagation, as derived by Rumelhart, the derivative of the squash function is available by examining the time when no OR'ed together pulses are present, being 1-?(?), or e-?. Logically AND'ing together pulse trains, in certain circumstances, provides the time multiplication of the two signals. Multiplication of input frequencies by weights is accomplished by modulating the width of the output pulses, while keeping the frequency the same.
Patent CA-1316234-C (CA)
Title: Fire detecting system
Inventor: GUETTINGER HANNES
IPC: G08B17/00
Filed: 1989-06-12
Granted: 1993-04-13
Abstract: ABSTRACT         A fire detector comprising at least one first sensor for  emitting a  first output  signal  in response to a  fire condition, at least one second sensor for detecting a source of false alarm conditions and an evaluating circuit, said evaluating circuit  comprising means  for providing an  alarm signal  in response to a value of said first output signal exceeding a threshold value, and means for changing said threshold value relative to said first output signal value in response to a second output signal from said second sensor.
Patent CA-1318652-C (CA)
Title: Valve
Inventor: HUBERTSON FOLKE
IPC: F16K5/06
Filed: 1989-06-16
Granted: 1993-06-01
Abstract: ABSTRACT OF THE DISCLOSURE A valve with a valve body (11, 43) in the form of a ball or of a segment of a ball has a second, concave, spherical sealing surface (20, 53) which is provided to be resiliently urged against a first sealing surface of the valve body, and at least an outer, cylindrical surface (21, 65, 66) which slidingly contacts a cylindrical guiding surface (22, 55, 56) of equal diameter in the central part of the valve housing. A spring washer (17, 82) abuts an end surface (24, 73) of the seat ring and is firmly clamped with its peripheral portion between an end surface (27, 81) of the central part of the valve housing and an end surface (28, 62) of an end fitting. The end surface of the seat ring comprises an annular abutment surface (24, 73) at a radial distance from an interior of the peripheral portion of the spring washer. The abutment surface is projected in the axial direc-tion toward the end fitting relative to a first, annular portion (23, 70) of said end surface of the seat ring.
Patent CA-1318797-C (CA)
Title: Torque transmission unit for partially frozen  beverage system
Inventor: SEXTON RODNEY N
IPC: F16D7/04
Filed: 1989-07-10
Granted: 1993-06-08
Abstract: Abstract of the Disclosure A pair of torque transmission units deliver torque to first and second cooling chambers that produce the partially frozen beverages.  A first torque transmission unit is directly coupled to a geared motor.  The first unit includes a stand with three upright members that rotatably support first and second axially aligned shafts.  The first shaft is connected to the output of the geared motor.  Axially separable sections of a coupler are attached to corresponding opposing ends of the first and second shafts. The first shaft is rotatably mounted in a first upright member; the second shaft is rotatably mounted in second and third upright members over a region remote from the coupler. A drive wheel is attached to the first shaft at a position remote from the coupler.  An output wheel is attached to the second shaft at a position intermediate to the second and third uprights.  The second torque transmission unit includes a stand having four uprights which rotatably support first and second axially aligned shafts.  An input wheel is mounted on the first shaft intermediate the first and second uprights.  A coupler having axially separable sections is mounted intermediate the second and third uprights and each axially separable section is attached to a corresponding opposing end of the first and second shafts. An output wheel is attached to the second shaft intermediate the third and fourth uprights.  A thrust bearing is attached to the first shaft intermediate the input wheel and an inboard side of the first upright member.  The torque transmission system includes a belt for conveying torque between the drive wheel of the first unit to the input wheel of the second unit.  The system also includes further belts respectively connecting the output wheels of the first and second transmission units to the respective ones of the cooling chambers.
Patent CA-1331196-C (CA)
Inventor: BRYCE GRAEME F
IPC: C07C333/04
Filed: 1989-07-13
Granted: 1994-08-02
Abstract: ABSTRACT     Compounds of formula I can be used as topical agents to combat the disorders of the skin produced by photodamage which disorders include:  wrinkling, elastosis and premature aging. Compounds of formula I are                I wherein n represents 1 or 2, R represents mono- or di-(lower alkyl)carbamoyl.
Patent CA-1333654-C (CA)
Inventor: KUSCHE DAVID W
IPC: F02B75/02
Filed: 1989-07-28
Granted: 1994-12-27
Abstract: An evaporable foam pattern to be used in casting a multi-cylinder in-line two-cycle engine block.  The assembled pattern, which is substantially identical in shape to the cast metal block, includes a plurality of in-line cylinders each having an end open to the crankcase end of the pattern.  Each cylinder includes an exhaust passage that communicates with an exhaust manifold that extends to the exterior of the pattern and each cylinder has at least one longitudin-ally extending transfer passage.  The assembled pattern also includes cooling passages that surround each cylinder, as well as surrounding the exhaust manifold passage.  The foam pattern is composed of a plurality of separate foam sections joined together by an adhes-ive along planar interfaces.  A first of the sections extends from the crankcase end of the pattern to the lower end of the transfer passages, and a second section extends from the lower end of the transfer passages to a location intersecting the exhaust passages of the cylinders. A third section extends from the exhaust passages to the cylinder heads.  In addition, a fourth pattern section encloses the water passages at the head end of the block, while a fifth section encloses the water passage that borders the exhaust manifold.
Patent CA-1313252-C (CA)
Title: Method and apparatus for analyzing material properties using reflected ultra sound
Inventor: ANTICH PIETRO P
IPC: G01N29/26
Filed: 1989-08-09
Granted: 1993-01-26
Abstract: ABSTRACT      A method and apparatus which assesses the mechanical properties of a material by launching an ultrasound signal at the material while varying the angle of incidence and analyzing the amplitude or the ultrasound wave reflected by the material.  The method and apparatus correlates extrema (maxima or minima inflection points) in the reflected angle with the angle of incidence of the transmitted signal to identify critical angles of incidence.  The velocity of the pressure wave in the material has been found to be a function of a first critical angle corresponding to 2 first maxima as the angle of incidence is increased in the range 0°-90°.  The velocity of the shear wave in the material has been found to be a function of a second critical angle corresponding to a second maxima following the first maxima.  Young's modulus of elasticity, Poisson's modulus, and density can be approximated using the velocity of the pressure wave and shear wave for isotropic materials.  A third critical angle corresponding to a minima after the first critical angle (reflected amplitude approaching o) has been found particularly useful in conjunction with the first and second critical angles in assessing bone density and in determining whether the second critical point is at a maximum or an inflection point.  The extension of the method in which the place of scattering is rotated around the normal to bone while keeping the point of observation fixed has been found particularly useful in assessing the mechanical properties of anisotropic materials such as cortical bone.
Patent CA-1315804-C (CA)
Inventor: TODD PAUL H JR
IPC: C12C11/00
Filed: 1989-08-11
Granted: 1993-04-06
Abstract: ABSTRACT OF THE DISCLOSURE Beta acids,  separated from hop extracts,  are purified prior to hydrogenolysis by mixing with an aqueous solution of polyvalent metal ions, preferably edible  ions such as magnesium or calcium ions, separating  the aqueous beta acids  from insoluble materials containing catalyst poisons, and recovering the  thus-purified beta acids which  are catalyst-poison free and in a form suitable for hydrogenolysis to 4-desoxy alpha acids.
Patent CA-1338257-C (CA)
Inventor: OLSON JEFFREY A
IPC: F02M69/08
Filed: 1989-09-20
Granted: 1996-04-23
Abstract: Disclosed herein is an internal combustion engine comprising a cylinder, a piston reciprocal in the cylinder, an accumulation chamber, a supply conduit including a check valve and extending between the cylinder and the accumulation chamber, a supply valve having a valve head located between the cylinder and the check valve and operable between an open position and a closed position to control gas flow from the cylinder through the supply conduit to the accumulation chamber, and a device responsive to the pressure in the accumulation chamber and in the cylinder for selectively moving the supply valve relative to the open position and the closed position, which device for moving the supply valve comprises a secondary chamber, a passage extending from the accumulation chamber to the secondary chamber and including means for restrictively supplying gas from the accumulation chamber to the secondary chamber at a rate lower than the rate at which gas is supplied to the accumulation chamber from the cylinder, a bore extending between the secondary chamber and the supply conduit at a location between the cylinder and the check valve, and a diaphragm defining a wall of the secondary chamber to prevent gas flow through the bore between the supply conduit and the secondary chamber and connected to the supply valve so that the diaphragm disposes the supply valve to the open position in the
Patent CA-1333518-C (CA)
Inventor: NORELL MARIA
IPC: B01J23/64
Filed: 1989-09-22
Granted: 1994-12-20
Abstract: The  present  invention  relates  to  a  process  for production of  chlorine dioxide  by reacting  in a reaction vessel an  alkali metal chlorate, a mineral acid and metha-nol as a reducing agent in proportions to generate chlorine dioxide in  a reaction  medium maintained  at a temperature from about 50°C to  about 100°C  and an  acidity within the interval from  about 2  to 4.8  N and subjected to a subat-mospheric  pressure  sufficient  to  effect  evaporation of water. A  mixture of  chlorine dioxide  and water vapour is withdrawn from an evaporation region in the reaction vessel and an  alkali metal salt of the mineral acid is precipita-ted in a crystallization region in the reaction vessel. The reaction is  performed in the presence of a catalyst, which comprises a metal or  a combination  of two  or more metals being  selected  from  the  group  consisting  of antimony, molybdenum,  technetium,   ruthenium,  rhodium,  palladium, rhenium, osmium,  iridium, platina, or a combination of one or more of these with manganese or vanadium.
Patent DK-154162-C (DK)
Inventor: MATHIS PAUL-HENRI
IPC: E04C3/14
Filed: 1982-06-10
Granted: 1989-03-13
Abstract: 1. A lamellated and glued wooden beam consisting of a superposition of wooden laminations (2, 2') of two different types defining between them cavities (1) or the like which have a random cross-section, the two edges of the first type of lamination (2) being squared whereas only one edge of the second type of lamination (2') is squared, the other edge being provided with an edge-sawing, characterised in that the cavities (1) result from the arrangement of two laminations (2) of the first type, with squared edges, the width of which is equal to the width of the beam, placed at each side of two laminations (2') of the second type with only one squared edge in such a manner that squared edges of the two types of lamination are aligned to form the lateral faces of the beam, and that the sawn edges of the laminations (2') of the second type are arranged facing one another inside the beam, the use of frusto-conical balks or rough timber for the construction of the laminations having the effect that the general direction of the cavities (1) is not parallel to said lateral faces of the beam.
Patent DK-165447-C (DK)
Inventor: SEIDEL PETER-RUDOLF
IPC: C07D403/12
Filed: 1984-06-15
Granted: 1993-04-13
Abstract: The invention relates to substituted 2-pyrimidinyl-1-piperazine derivatives defined herein by formula (I), processes for their manufacture, compositions containing said substituted 2-pyrimidinyl-1-piperazine derivatives as active materials and the use of said compounds and compositions as agents effecting the central nervous system. Also included in the invention are intermediates of formula (VIII) for making the active formula (I) compounds.
Patent FI-72318-C (FI)
Inventor: PRICE BARRY JOHN
IPC: C07D207/08
Filed: 1977-07-22
Granted: 1987-05-11
Abstract: Novel aminoalkylfuran derivatives of the general formula I: <IMAGE> in which the symbols have the meaning indicated in Claim 1, are prepared by reaction of a compound of the formula <IMAGE> with a compound of the formula R3NZZ'. A, B, Z and Z' have the meaning indicated in Claim 1. The aminoalkylfuran derivative can be used in the form of the free base or in the form of a physiologically acceptable salt or a hydrate. These novel aminoalkylfuran derivatives exhibit inhibition of gastric acid secretion if they are stimulated via histamine H2 receptors.