baber/WOPTO huggingface dataset:
Patent CA-2017654-A1 (CA)
Title: Polymer compositions for the production of articles of biodegradable plastics material and methods for their preparation
Inventor: BASTIOLI CATIA
IPC: C08K5/21
Filed: 1990-05-28
Abstract: A polymer composition usable far the production of articles of biodegradable plastics material includes an ethylene/vinyl alcohol copolymer and destructured starch.      Preferably, the composition is obtainable by mixing the ethylene/vinyl alcohol copolymer, in a heated extruder, with a starch component constituted by a destructured starch composition produced beforehand by mixing starch with a high-boiling plasticizer, such as glycerine and a destructuring agent, preferably constituted by urea, in an extruder. Alternatively, the composition can be obtained by mixing the ethylene/vinyl alcohol copolymer with starch. and a plasticizer in an extruder, with water added as appropriate and possibly with a suitable destructuring agent.      The composition is particularly useful for the production of films with good resistance to perforation and tearing and moulded articles with improved mechanical strength.      The products made from this composition are also good oxygen and carbon dioxide barriers.
Patent CA-2020434-A1 (CA)
Title: Electronic polynomial interpolation device for numeric controls of machine tools, particularly milling machines for the machining of dies, and machine comprising said device
Inventor: LEVI MONTALCINI PIERA
IPC: G05B19/4103
Filed: 1990-07-04
Abstract: ELECTRONIC  POLYNOMIAL  INTERPOLATION  DEVICE  FOR  NUMERIC        CONTROLS  OF  MACHINE  TOOLS,  PARTICULARLY MILLING MACHINES          FOR  THE  MACHINING  OF  DIES,  AND  MACHINE  COMPRISING SAID          DEVICE                    ABSTRACT    The device comprises a first section, which comprises logic circuit means which generate the law of motion along the machine   operative trajectory arc, and a second section with a set of three digital polynomial generators, each of which receives from the motion law generator means the instantaneous value of the curvilinear coordinate and, from an external  processing unit,  the polynomial  coefficients related to the trajectory arc to be generated and the sampling and sub-sampling pulses; the polynomial generators of the second section are suitable for providing, on the respective outputs, the corresponding components of the instantaneous speed vectors of each point of the trajectory, generated by adding and multiplying the polynomial coefficients and the curvilinear coordinate.
Patent CA-2020836-A1 (CA)
Inventor: DAVIS H FORBES
IPC: C02F3/12
Filed: 1990-07-10
Abstract: Aerobic wastewater treatment processes are controlled utilizing alkalinity measurements.  A base line of alkalinity is determined by measuring the alkalinity profile of the influent to the aerobic wastewater treatment process.  The alkalinity of the wastewater is sensed at a number of different points in the aerobic wastewater treatment process, such as at a clarifier effluent and sludge exit, aeration zone, and aerobic digester effluent.  When the sensed alkalinity at any given point is above a predetermined amount over base line alkalinity, the air supply is increased and/or the concentration of microbes and food is reduced (as by increasing the sludge withdrawal rate from a clarifier) until the sensed alkaline level is stabilized.  When the sensed alkalinity is below a predetermined amount under base line, the air supply is decreased and/or the concentration of feed and microbes increased (as by reducing or terminating sludge withdrawal from a clarifier) until the sensed alkalinity level is stabilized.  Anaerobic odors are eliminated, plant operation and efficiency is improved, settling is improved, there is enhanced removal from the secondary clarifier, and solids carryover is reduced increasing the quality of effluent from the clarifier.
Patent CA-2022869-A1 (CA)
Title: Baby playpen-bassinet combination
Inventor: KUJAWSKI STANLEY M
IPC: A47D7/00
Filed: 1990-08-08
Abstract: BABY PLAYPEN-BASSINET COMBINATION Abstract A baby playpen-bassinet combination is disclosed in which the playpen has a bottom and four sides extending upwardly from the bottom, with one edge portion of the side secured to the bottom, and the opposite edge portions free.  A bassinet is releasably mountable on the opposite free edge portions of the playpen for locating the bassinet in a more accessible position, requiring less bending and lifting in handling a baby for naps, diaper changing and dressing.
Patent CA-2026180-A1 (CA)
IPC: H01R43/042
Filed: 1990-09-25
Abstract: ABSTRACT OF THE DISCLOSURE:     A tool for crimping an elongate electrical contact to an end of an electrical wire.  The tool includes a locating device supported adjacent the crimping dies of the crimping tool for supporting and locating the contact in proper position between the dies.  Upon crimping, the contact is subject  to  deformable  elongation  in  its  longitudinal direction.   The locating device is supported to the tool against the bias of the spring to be movable away from the tool to accommodate such contact elongation caused during crimping.
Patent CA-2026779-A1 (CA)
Inventor: PUGACH JOSEPH
IPC: C07C49/794
Filed: 1990-05-21
Abstract: Cétones non saturées produites à partir de cétones et de paraformaldéhyde dans des conditions de réaction douces, en présence d'un catalyseur renfermant un sel d'acide de type halogéné d'une amine secondaire et d'une petite quantité d'un acide carboxylique. On privilégie des températures de 120-150 degrés C et des pressions de 775-1135 kilopascals. Des cétones di-insaturées, comme les cétones divinyliques, peuvent également être produites; si la cétone de départ renferme déjà un groupe insaturé, on obtient un second groupe insaturé.
Patent CA-2027826-A1 (CA)
Title: Improved call set-up in a radio communication system with dynamic channel allocation
Inventor: STRAWCZYNSKI LEO
IPC: H04W24/00
Filed: 1990-10-17
Abstract: IMPROVED CALL SET-UP IN A RADIO COMMUNICATION SYSTEM WITH              DYNAMIC CHANNEL ALLOCATION            Abstract of the Disclosure The call set-up technique of this invention is characterized by the use of channel information from both base station and subscriber terminal in determining the radio traffic channel upon which to set-up a new call. Communication between the base station and subscriber terminal is carried out on a signalling channel until the traffic channel is chosen.  Calls are set-up so that they proceed on the radio channel which, of a set of channels under consideration by the subscriber terminal, contains the least amount of interference as measured at the subscriber terminal.  The set of channels under consideration by the subscriber terminal is a subset of the entire set of channels allocated to the service.  This subset is comprised of those channels having little interference, as measured by the base station.  The call set-up technique thereby assures that calls proceed on channels containing little interference from the viewpoints of both base station and subscriber terminal.
Patent CA-2032289-A1 (CA)
Title: Substituted 5-(alkyl) carboxamide imidazoles
Inventor: FINKELSTEIN JOSEPH A
IPC: C07D405/12
Filed: 1990-12-14
Abstract: ABSTRACT OF THE DISCLOSURE           Angiotensin II receptor antagonists having the formula:                          which are useful in regulating hypertension and in the treatment of congestive heart failure, renal failure, and glaucoma pharmaceutical compositions including these antagonists, and methods of using these compounds to produce angiotensin II receptor antagonism in mammals.
Patent CA-2033032-A1 (CA)
Inventor: DYER JOHN
IPC: F15B15/08
Filed: 1990-12-21
Abstract: GEARED AIR ACTUATOR           Abstract A geared air actuator comprising a piston mounted for movement within a housing.  The piston has a front wall and a hollow body portion which extends rearwardly from the front wall.  A spring is mounted within the hollow body portion of said piston.  When pneumatic fluid is introduce into the housing and against the front of the piston, it moves the piston back against the action of the spring.          When the introduction of pneumatic fluid is terminated the spring will move the piston back to its original position.          The front wall of the piston is substantially thinner than the length of the body portion.
Patent CA-2033267-A1 (CA)
Inventor: SHIKANAI NOBUO
IPC: C22C38/14
Filed: 1990-12-27
Abstract: An abrasion resistant steel is provided with approximately 0.05 to 0.45 wt.% C, 0.1 to 1.0 wt.% Si, 0.1 to 2.0 wt.% Mn, 0.05 to 1.5 wt.% Ti and the balance Fe as the basic elements cotributing to the enhancement of the abrasion resistance property without excessively increasing the hardness of the steel, In addition to the basic elements, at least one element selected from the group consisting of 0.1 to 2.0 wt.% Cu, 0.1 to 10.0 wt.% Ni, 0.1 to 3.0 wt;% Cr, 0.1 to 3.0 wt.% Mo and 0.0003 to 0.01 wt.% B may be added to enhance the quenching hardenability of the steel, and at least one element selected from the group consisting of 0.005 to 0.5 wt.% Nb and 0,01 to 0.5 wt:% V may be added to enhance the precipitation hardenability of the steel.
Patent CA-2033410-A1 (CA)
Title: Powerline monitoring device
Inventor: KERBER THOMAS B
IPC: G01R31/08
Filed: 1990-12-28
Abstract: ABSTRACT         A powerline monitoring device has a single core that can be used to continuously measure current as well as other parameters such as temperature, ambient temperature, phase angle and voltage.  The current is measured through the same set of windings that power the device.  The device can be mounted on or removed from a powerline while the powerline is activated.  Measurements taken by the device are transferred to a receiving station.  The device operates from power on the powerline itself and is designed to continue to operate for approximately ten seconds subsequent to complete failure of power in the powerline.  The device can operate over a broad range of current in the powerline ranging from 5 amps to 2,000 amps.  Previous devices do not operate over a broad range of current or cannot measure current continuously or have two cores or two sets of windings and are relatively expensive or complex to manufacture.
Patent CA-2033446-A1 (CA)
Title: Jeton pour table de jeux
Inventor: NAEGELEN BERTRAND L M J
IPC: A44C21/00
Filed: 1990-12-31
Abstract: PRÉCIS DE LA DIVULGATION Ce jeton comprend une partie centrale réalisée en un matériau lourd, en forme de disque circulaire, une première partie en matière synthétique formant une couronne entourant la partie centrale et recouvrant celle-ci au moins sur une partie de chacune de ses faces, et une seconde partie en matière synthétique recouvrant la couronne de la première partie en matière synthétique sur chacune de ses faces, et sur au moins une partie de sa tranche.
Patent CA-2037095-A1 (CA)
Title: Gas separation material
Inventor: BLINKA THOMAS A
IPC: C08G73/06
Filed: 1991-02-26
Abstract: Abstract of the Disclosure A novel class of polyimides useful in making semi-permeable membranes for gas separation is synthesized by the reaction of 4,4'-[hexafluoroisopropylidene]-bis-[phthalic anhydride] (6FDA) with 3,7-diamino-2,8-dimethyldiphenylenesulfone (AMPS).  In lieu of the two methyl groups the diamine may be substituted by H or C alkyl.  Membranes made from the polyimides have high permeability for CO2 from mixtures containing CO2 and other gases such as CH4 and have commercially acceptable selectivity.
Patent CA-2038129-A1 (CA)
Title: Vacuum aerodynamic spinning force
Inventor: SHEU BARNEY
IPC: F15D1/08
Filed: 1991-03-12
Abstract: ABSTRACT     Since the atmosphere is most dense at ground level and thins out as it stretches upwards until,at about 500km it is almost a vacuum. This is the reason that an airplane or a rocket are impossible to traverse in the high attitude beyond the atmosphere at relatively low velocity. In order to increase the jet stream propulsion for the airplanes or rockets to traverse through the high attitude that a right circular hollow conical rotating jet with a vacuum aerodynamic spinning force in a direction opposite to the thrust of the jet stream is invented.
Patent CA-2039383-A1 (CA)
Title: Terminal block
Inventor: JOHNSON RICHARD B
IPC: H01R11/09
Filed: 1991-03-28
Abstract: A compact universal terminal block for connecting single wire conductors to plural wire conductors in series-parallel electrical circuits.  The terminal block has a generally rectangular insulative housing with a stepped end portion and plural unitary connectors inside of the housing.          Each connector is made from a blank of conductive material and has an input terminal and multiple tubular output terminals for operatively connecting multiple wire conductors to a single wire conductor.  The tubular output terminals are arranged in parallel and staggered relationship with respect to each other to minimize`the size of the terminal block and the amount of material used for stamping the connectors.  Connectors having differing numbers of output terminals are provided in the common insulative housing to serve the requirements of many users.
Patent CA-2040768-A1 (CA)
Inventor: GROVES JAMES D
IPC: C09J7/02
Filed: 1991-04-18
Abstract: ABSTRACT OF THE DISCLOSURE            This invention relates to pressure-sensitive adhesives, and, more particularly, a composition formed from a blend of pressure-sensitive adhesives.  It has frequently been proposed to blend two or more pressure-sensitive adhesive compositions in order to realize the advantages of each. However, mere blending in solution of two or more different pressure-sensitive adhesives most often results in a composition of poor, or at best, compromised properties, and consequently, the blend is of little or no commercial value as a pressure-sensitive adhesive.  This invention provides an adhesive composition comprising a blend consisting essentially of (1) an adhesive composition comprising a tacky pressure-sensitive adhesive, said adhesive preferably selected from rubber-based adhesives, e.g., the thermoplastic elastomers, and (2) a pressure-sensitive adhesive composition comprising a polymer having in its backbone at least a major portion by weight of polymerized monomeric acrylic or methacrylic acid ester of a non-tertiary alcohol having from 1 to 14 carbon atoms with the average number of carbon atoms being about 4 to about 12, and grafted to the backbone, polymeric moieties having a Tg greater than about 20°C and a weight average molecular weight above about 2,000.  The pressure-sensitive adhesive of adhesive composition (1) has moieties, e.g., blocks or grafts, that associate with the polymeric moieties grafted to the backbone of the polymer of adhesive composition (2).  Pressure-sensitive adhesives prepared from the composition of this invention can be tailored to exhibit high values of peel adhesion with respect to both polar and non-polar surfaces, a high level of tack, and a high level of static shear.
Patent CA-2042413-A1 (CA)
Title: Compact disc case and blank for forming same
Inventor: MARTINEZ SAMANTHA
IPC: G11B33/04
Filed: 1991-03-19
Abstract: COMPACT DISC CASE AND BLANK FOR FORMING SAME            Abstract of the Disclosure A compact disc case and blank for forming the same. The case includes a pocket inside of an envelope for holding a compact disc.  A cut-out portion provides easy grasping of the disc to permit removal and insertion into the case.  A flap folds over the cut-out portion providing a closable case for holding and storing the disc.   The flap has a detachable folded portion which can be used to place a mailing label on, then folded over and about the case and sealed to provide a mailing container.  The folded portion can then be detached and the case is used to permanently store the disc.
Patent CA-2046798-A1 (CA)
Title: Pin diode attenuator
Inventor: STANTON ROBERT
IPC: H03H7/25
Filed: 1991-07-11
Abstract: A signal processing circuit is provided, such as a PIN diode attenuator for use in cable television signal distribution. The circuit includes a variable impedance device that is responsive to an input signal. The input signal is provided over a first range to vary the impedance in response to a control signal having an absolute value below a predetermined threshold. The input signal is provided over a second range in response to the control signal having an absolute value above the threshold. The first and second ranges are not contiguous. In a preferred embodiment, a zener diode is used to increase the drive current to a bridged-T PIN diode attenuator when the attenuator control signal reaches the zener breakdown voltage.
Patent CA-2050013-A1 (CA)
Title: Distributed multisite coordination system
Inventor: TEEL JAMES L JR
IPC: H04W84/08
Filed: 1991-08-27
Abstract: ABSTRACT       A multisite network switch for a series of RF digital trunked radio transceivers and dispatcher consoles.  Each transceiver covers a certain site area.  The switch establishes audio communications between different sites and various dispatcher consoles.  The multisite switch has a distributed architecture in which each node of the switch is supported by a microprocessor controlled card.  Each node interfaces with a site, dispatcher console, system manager or other system component.
Patent CA-2050188-A1 (CA)
Title: Antiperspirant containing a hydrophobic macroporous polymer as the suspending agent
Inventor: ABRUTYN ERIC S
IPC: A61K9/12
Filed: 1991-08-29
Abstract: An antiperspirant composition containing an astringent compound, a volatile carrier and a suspending agent for the astringent compound. The improvement relates to incorporating into the composition as the suspending agent a hydrophobic macroporous highly crosslinked polymer. The hydrophobic macroporous polymer is free of "in situ" entrapped active ingredients. The preferred antiperspirant product is a roll-on formulation.
Patent CA-2052207-A1 (CA)
Title: Intraluminal anastomotic surgical stapler with detached anvil
Inventor: MAIN LAUREN O
IPC: A61B17/115
Filed: 1991-09-25
Abstract: A surgical stapling mechanism with an integral trocar is disclosed. This trocar contains an alignment mechanism which causes the anvils on the stapler to align with the staples held within the head portion. A unique latching mechanism is disclosed, and a sleeve which covers the sharp trocar tip is provided.
Patent CA-2056256-A1 (CA)
Title: Heavy oil conversion process
Inventor: VISSER DIEDERIK
IPC: C10G47/22
Filed: 1991-11-26
Abstract: A B S T R A C T                      HEAVY OIL CONVERSION PROCESS        Process for the conversion of a heavy hydrocarbon oil, which process comprises: (i)    contacting non catalytic solid particles of a temperature of at least 600 °C with a hydrogen-containing gas and a heavy hydrocarbon oil in a reactor which is operated at a hydrogen partial pressure of between 10 and 80 bar and a temperature of between 450 and 850 °C, in which reactor the bulk temperature is substantially uniform, (ii)   withdrawing coked solid particles from the reactor and removing coke from said particles, and (iii) recycling particles from which coke has been removed in step (ii), to the reactor.
Patent CA-2057028-A1 (CA)
Title: Device in which reaction takes place between a gas and a solid material divided in a container
Inventor: VIDAL JEAN
IPC: B01J8/38
Filed: 1991-04-18
Abstract: A reactor includes: a lower zone (I) with a rapid circulation fluidized bed, a dense fluidized bed zone (13) adjacent to the upper area of the lower zone, separated by a partition, said bed receiving solid materials falling on its upper layer while its lower layer returns these materials to the lower zone (I), and an upper zone (II) of the rapid circulation fluidized bed. Application: boilers.
Patent CA-2058766-A1 (CA)
Title: Pressure sensitive adhesive laminate
Inventor: RAGLAND WILLIAM G
IPC: C09J7/50
Filed: 1990-05-08
Abstract: ABSTRACT OF THE DISCLOSURE          This invention relates to improved polymer-pressure sensitive adhesive combinations, particularly in the form of laminates, and methods of producing same.  This invention improves the bond strength of the pressure sensitive adhesive to the polymer layer by priming the polymer surface with a curable urethane primer before applying the pressure sensitive adhesive to the polymer surface.  If the polymer surface is not "active" to the curable urethane primer, the polymer surface is first activated with a silicon-containing treating agent.  The laminates of this invention have superior bond strength, especially long-term bond strength.  Of particular interest are the embodiments of this invention wherein the polymer is a silicone foam and the pressure sensitive adhesive is either acrylic or silicone adhesive.
Patent CA-2059856-A1 (CA)
Title: Counterpressure type container filling apparatus
Inventor: METTE MANFRED
IPC: B67C3/26
Filed: 1992-01-22
Abstract: ABSTRACT         An apparatus for admitting metered quantities of a pressurized liquid into successive containers, such as cans or bottles, has a housing which stores a supply of pressurized liquid and carries one or more combined container sealing and centering units.  Each such unit has a vertically reciprocable at least partially elastomeric tubular member movable between a lower end position and an upper end position.  The external surface of the annular upper end portion of the tubular member sealingly engages a cylindrical internal surface which surrounds the outlet of the housing when the tubular member assumes its lower end position, and an end face of the annular lower end portion of the tubular member is then in sealing engagement with the open top of a container to be filled.  The open lower end of a conduit for compressed gas is located at the upper end of the passage within the tubular member to ensure that the upper end portion of the tubular member can be expanded into sealing engagement with the internal surface.  The tubular member and the housing define an annular clearance in the upper end position of the tubular member so that the latter can be readily cleaned from the inside and from the outside.
Patent CA-2060087-A1 (CA)
Title: Seal oil temperature control method and apparatus
Inventor: SNUTTJER OWEN R
IPC: F16N39/02
Filed: 1992-01-27
Abstract: ABSTRACT OF THE DISCLOSURE       A system for providing seal oils to a gland seal that surrounds the shaft of a generator with the temperature differences between the oils minimized. The temperature of one of the seal oils is utilized as a reference for controlling the oil temperature of the other seal oil.  In particular, the temperature of the air-side seal oil is determined and utilized as a reference.  The temperature of the hydrogen-side seal oil is determined, and a differentiator produces a signal based upon the difference between the air-side and hydrogen-side seal oils to control either the water flow rate to the hydrogen-side cooler, or to control mixing of cooled and uncooled oil in the hydrogen-side of the system.  The system advantageously prevents thermal differential expansion from occurring in the generator shaft, and allows for the elimination of a controlled cooler in the air-side oil system.  Further, the air-side oil can be supplied from the main lube oil system.