baber/WOPTO huggingface dataset:
Patent CA-1333757-C (CA)
Inventor: MILLER GREGORY N
IPC: B29D11/00
Filed: 1986-06-24
Granted: 1995-01-03
Abstract: A novel contact lens and a method of making the contact lens, said lens having an asymmetrically positioned and weighted presbyopic correction zone so that the presbyopic zone naturally positions itself lowermost in relation to the user's eye, the method involving the steps of providing a contact lens blank having a posterior surface conforming to the corneal requirements of the patient, forming an initial anterior surface on the lens blank corresponding to the required presbyopic correction, and then forming a second anterior surface on the lens blank in offset relation to the initial surface particularly to remove the initial surface and intersect smoothly therewith to form the presbyopic correction zone. The second anterior surface portion of the lens blank may have a corrective surface conforming with a greater distance correction of a user's prescription than the aforesaid near distance correction and which smoothly intersects the first formed surface to leave a residual of such firm formed surface which is of generally crescent shape.  A third anterior surface portion of the lens blank with a corrective surface conforming with far distance correction of the user's prescription may be formed which smoothly intersects the second formed surface portion to leave a residual thereof between the first formed surface and the far distance surface.
Patent CA-1297267-C (CA)
Title: Method and apparatus for making sulphuric acid
Inventor: WATSON RICHARD W
IPC: C01B17/765
Filed: 1986-09-29
Granted: 1992-03-17
Abstract: METHOD AND APPARATUS FOR MAKING SULPHURIC ACID            ABSTRACT OF THE DISCLOSURE            Sulphur-containing material is passed into a thermal cracker where sulphur dioxide is formed, the necessary heat being generated by burning a carbon-containing fuel. Oxygen-rich gas, preferably pure oxygen, is used to support the combustion and a gas mixture including, after drying, more than 16% (preferably at least 25%) by volume of sulphur dioxide and at least 30% (preferably at least 60%) by volume of carbon dioxide.  The mole ratio of the mixture is adjusted by addition of oxygen-rich gas (preferably pure oxygen) upstream of a catalytic converter.  In each stage of the converter reaction takes place between sulphur dioxide and oxygen to form sulphur trioxide which is absorbed to form sulphuric acid.  Oxygen is also added between the first and second stages and preferably the second and third stages of the converter.  High production rates of sulphuric acid for a given size of converter and from low value sulphur-containing materials are made possible.
Patent CA-1286279-C (CA)
Title: Boron-promoted reducible metal oxides and methods for their use
Inventor: GASTINGER ROBERT G
IPC: B01J27/18
Filed: 1986-10-09
Granted: 1991-07-16
Abstract: ABSTRACT OF THE DISCLOSURE         Compositions comprising boron-promoted reducible metal oxides (expecially reducible oxides of Mn) and optionally containing alkali and alkaline earth metal components are disclosed, as well as use thereof for hydrocarbon conversions characterized by formation of by-product water.  Particular processes comprise the conversion of methane to higher hydrocarbons and the dehydrogenation of dehydrogenatable hydrocarbons, e.g., dehydrogenation of C2-C5 alkanes to form the correspond-ing olefins.
Patent CA-1298700-C (CA)
Inventor: VALY YVES
IPC: G21F1/12
Filed: 1987-04-13
Granted: 1992-04-14
Abstract: ABSTRACT OF THE DISCLOSURE          Protective box for electronic circuits hardened with respect to X-rays.     The protective box comprises a base and a cover fixed to the base, formed from a rigid mechanical structure constituted by a composite material formed by a fibre-reinforced resin, an X-ray protection material partly covering the outer surface of the mechanical structure, said X-ray protection material being formed by a resin matrix containing a powder of a metal with an atomic number at least equal to 47 and with a melting point at least equal to 630°C, a material formed from an element with a low atomic number forming the outer surface of the cover and optionally a good electricity conducting material covering the inner surface of the mechanical structure.     Application to electronic circuits on-board aircraft.
Patent CA-1276252-C (CA)
Title: Telecommunication system with means to maintain unchanged in bus-connecting station transformers the core magnetization at instant of pulse termination
Inventor: JANSSEN DANIEL J G
IPC: H04L25/08
Filed: 1987-06-10
Granted: 1990-11-13
Abstract: ABSTRACT: A telecommunication system comprising a bus-conductor and telecommunication stations connected to this bus conductor via transformers.          A telecommunication system comprising a 2-wire bus conductor to which terminals have been connected via  a transformer, in which communication takes place via voltage pulses Vp on the bus. Each voltage pulse Vp causes a magnetizing current im to be developed in the spurious self-inductance of each connected tran s-former. This current causes a faulty voltage to arise after termination of the pulse, entailing faulty information transfer. The invention offers a system in which a compensating current ic is generated in the connec-ted transformers to combat this faulty voltage, so that at the instants of pulse termination the total magnetization of all transformers remains unchanged.            Figure 5.
Patent CA-1307770-C (CA)
Title: Chain bags, method and apparatus
Inventor: AUSNIT STEVEN
IPC: B65B9/20
Filed: 1987-06-26
Granted: 1992-09-22
Abstract: ABSTRACT OF THE DISCLOSURE A bag chain structure and method of making wherein fastener strips are attached across the surface of the film at predetermined intervals with the fastener strips having a plurality of rib and grooves so that the rib and grooves interlock when the strip is folded upon itself and the film is doubled so that the lateral edges are in adjacency and are joined, cross-seals are placed across the doubled film at intervals spaced from the fastener strips to form the bottom of the bag; and tear perforations are placed in the doubled film between the bottom seal and the fastener so that individual bags can be torn off of the continuous film sheet.
Patent CA-1298102-C (CA)
Title: Cermet material, cermet body and method of manufacture
Inventor: DARRACQ DOMINIQUE
IPC: C25C3/12
Filed: 1987-08-20
Granted: 1992-03-31
Abstract: CERMET MATERIAL, CERMET BODY AND     METHOD OF MANUFACTURE     Abstract The present invention provides a ceramic/metal composite material comprising cerium/aluminum mixed oxides as the ceramic phase and an alloy or intermetallic compound of cerium and at least one of aluminum, nickel iron and cobalt as the metal phase. The ceramic phase may comprise interengaged crystal lattices of ceria and alumina. The material may be a self-sustaining body which may be used as substrate for a dimensionally stable anode in molten salt aluminum electrowinning cells, coated with a protective layer of cerium oxyfluoride in situ during electrolysis in molten cryolite containing cerium ions.
Patent CA-1288264-C (CA)
Inventor: DELUCA ROBERT D
IPC: A61K6/06
Filed: 1987-10-20
Granted: 1991-09-03
Abstract: ABSTRACT        Orthodontic brackets are made from ion exchange strengthened glass.  In a preferred embodiment, the glass is a lithium alumino silicate strengthened with sodium ions.
Patent CA-1286126-C (CA)
Inventor: FUEHRER REECE R
IPC: F16H57/08
Filed: 1987-11-05
Granted: 1991-07-16
Abstract: PLANET GEAR CARRIER ASSEMBLY            Abstract of the Disclosure A planet gear carrier assembly has a cage in which is rotatably mounted a plurality of pinion gears. Each gear is mounted on a respective spindle which is disposed in aligned bores formed in the sidewalls of the cage.  In one sidewall, the bores have a stepped diameter to limit longitudinal movement of the spindles in one direction.  A flat machined on each spindle and a locking ring, secured in a groove in the other sidewall limit longitudinal movement of the spindles in the other direction as well as rotary movement of the spindles. In one embodiment, an oil shield or lube directing ring is positioned by the locking ring and the spindle flat to direct lubrication fluid to lube passages formed in the spindles.
Patent CA-1300335-C (CA)
Inventor: HERMANSSON LEIF
IPC: B22F3/15
Filed: 1988-02-12
Granted: 1992-05-12
Abstract: ABSTRACT OF THE DISCLOSURE:          In the manufacture of an object of a powdered material by iso-static pressing of a body (10) preformed from the powdered mat-erial with a gaseous pressure medium, the preformed body is pro-vided with a casing (13) of glass which is made gas-impenetrable by heating before carrying out the isostatic pressing,  Inside the glass casing there is arranged on the preformed body an inter-mediate layer (12) which counteracts the penetration of molten glass from the casing into the preformed body.  The intermediate layer comprises a layer of one or more intermediate phases in the system Al2O3 - SiO2, for example mullite 3 Al2O3 ? 2 SiO2, or a layer containing one or more such intermediate phases as main constituent.  In a preferred embodiment a layer of boron nitride is arranged inside the intermediate layer.  In a pre-ferred embodiment, the powdered object consists of aluminium oxide or an aluminium oxide-based ceramic.
Patent CA-1312080-C (CA)
Title: Arylpiperazinyl-ethyl(or butyl)-phenyl-heterocyclic compounds
Inventor: LOWE JOHN A III
IPC: C07D277/34
Filed: 1988-02-15
Granted: 1992-12-29
Abstract: P.C. 7171A            ARYLPIPERAZINYL-ALKYLENE-PHENYL-HETEROCYCLIC COMPOUNDS                      Abstract Arylpiperazinyl-alkylenephenyl-p-heterocyclic compounds, and the pharmaceutically acceptable acid addition salts thereof are neuroleptic agents.  They are useful in the treatment of psychotic disorders.
Patent CA-1302510-C (CA)
Title: Tissue metabolism measuring apparatus
Inventor: CHO YOSHIO
IPC: A61B5/00
Filed: 1988-02-23
Granted: 1992-06-02
Abstract: ABSTRACT OF THE DISCLOSURE    In a tissue metabolism measuring apparatus, light sources (31 to 33) emit rays of different wavelengths; the rays are branched as reference light pulses and sample light pulses through optical fibers (38 and 39); the sample light pulses are transmitted through a living body to be examined; the reference light pulses are delayed by means of mirrors (48 to 50); the sample light pulses transmitted through the living body and the delayed reference light pulses are collected by a lens (44); based on the collected light, a second harmonic of the light is generated by an optical crystal (45); and the second harmonic enters a photomultiplier (51).  A photon counter 52 counts photons based on the output of the photomultiplier and calculates an average value of the count output. Further, a delay amount of the reference light pulses is changed and when the delay amount of the reference light pulses with respect to the sample light pulses transmitted through the living body is a predetermined value, the average value of the count output of photons of the second harmonic is determined.  Thus, scattered components of the transmitted beam in the living body can be removed based on the average value.
Patent CA-1279925-C (CA)
Title: Power supply regulator for television
Inventor: LENDARO JEFFERY B
IPC: H04N5/63
Filed: 1988-02-25
Granted: 1991-02-05
Abstract: ABSTRACT           A first supply voltage is generated, during a power-up mode of a television receiver power supply, by rectifying a retrace voltage in a flyback transformer of a horizontal output stage of the television receiver.  The rectified voltage is coupled through a resistor and a diode to a power supply voltage receiving terminal of an integrated circuit that generates a horizontal rate drive signal.  The drive signal provides switching timings to the output stage.  A standby supply voltage is coupled, during a standby mode, to the terminal.  A shunt regulator regulates the voltage at the terminal during both the power-up and standby modes.  A transistor having a collector electrode that is coupled to the run supply voltage and a base electrode that is coupled to the anode of the diode, generates a second run supply voltage that is temperature compensated at an emitter electrode of the transistor.
Patent CA-1292201-C (CA)
Title: Pad turner and inverter
Inventor: HIRSCH JOHN L
IPC: B65G47/248
Filed: 1988-03-07
Granted: 1991-11-19
Abstract: Abstract of Disclosure Oblong articles such as sanitary pads moving in the direction of their length dimension are deposited on article carriers at the lower level of an ascending run of an input closed loop chain conveyor with corresponding one sides of the articles facing up. There are means for pivoting the carriers laterally at the upper level of the run to initiate turning of the articles about the line along which they are being conveyed.  They turn 90° by the time they land on the paddles or carriers of an adjacent output conveyor which has a run descending from said upper level to a lower level so the articles which have been turned are also inverted when they complete their desent.
Patent CA-1322533-C (CA)
Title: Loudspeaker arrangement
Inventor: SPORS WOLFGANG
IPC: H04R5/02
Filed: 1988-05-30
Granted: 1993-09-28
Abstract: Abstract of the disclosure A loudspeaker arrangement The invention relates to a loudspeaker arrangement in which, in front of the loudspeaker (5) or another sound source, when viewed in the direction of the sound projection, two, preferably plane, sound guide surfaces (2,3) are disposed which, in a bow-like manner, are inclined towards one another at an obtuse angle.  The projected sound is better distribu-ted hereby and a good stereophonic effect is achieved.  This applies particularly to a stereophonic arrangement with at least two loudspeakers (5) (Figure 3).
Patent CA-1295485-C (CA)
Title: Desulfurizing iron
Inventor: CAMERON IAN A
IPC: C21C1/02
Filed: 1988-06-06
Granted: 1992-02-11
Abstract: Abstract of the Disclosure The efficiency of the use of desulfurizing agents, particularly calcium carbide- and calcium oxide-based desulfurizing agents, to decrease the sulfur content of molten iron is improved by adding a pulse of magnesium, aluminum or calcium metal at a critical concentration of sulfur and oxygen in the molten metal.   The improved efficiency  enables  less  desulfurization  agent  to  be employed  for the same residual  sulfur concentration, with consequently decreased reaction time and costs.
Patent CA-1289102-C (CA)
Title: Package positioning apparatus
Inventor: TREIBER FRITZ F
IPC: B65G43/00
Filed: 1988-07-20
Granted: 1991-09-17
Abstract: PACKAGE POSITIONING APPARATUS           Abstract of the Disclosure A method for positioning articles to be processed by a machine is performed by apparatus comprising first and second article guide members which convergently extend into an article entryway along which articles are conveyed.  The guide members are spring biased into an article positioning orientation across at least a portion of the entryway and maintained in that article positioning orientation by first and second levers extending beneath the article entryway and including an interlock.  The interlock releases the article guide members only upon an article contacting both of the guide members.  The interlock comprises a release slot and at least one locking notch extending from one side of one end of the slot on one lever and a pin for engaging the slot and locking notch on the other lever.  When the pin is engaged in the locking notch, the first and second guide members are retained in a package positioning orientation such that an article engages one or the other of the package guides and is moved laterally to a desired position by the guide as the article is conveyed along the entryway. Upon engaging both guide members, the pin is removed from the locking notch and moves within the slot to release the guide members and permit the positioned package to progress along the entryway toward a processing station of the machine.
Patent CA-1313270-C (CA)
Title: Method and apparatus for forms generation
Inventor: PICKENS DAVID S
IPC: G06F17/24
Filed: 1988-08-30
Granted: 1993-01-26
Abstract: Abstract of the Invention A method and apparatus for forms generation is disclosed including a central workstation on which a form  layout  is  designed with forms generation software, is used to generate an object code output program which corresponds to the form layout.   The object  code output program can be utilized by independent workstations to print forms without requiring each independent workstation to be equipped with the  forms generation software used by the central workstation to design the form layout.
Patent CA-1303807-C (CA)
Title: Process and apparatus for the production of an extruded, stretched, seamless tube
Inventor: STRUTZEL HANS
IPC: B29C48/90
Filed: 1988-08-31
Granted: 1992-06-23
Abstract: Abstract of the Disclosure A seamless parison extruded from an extruder via an annular die, passes through a calibrator and coaxially surrounds a probe pipe, which is made to extend through the annular die beyond the calibrator.          On the probe pipe there is mounted a sealing element.          Ahead of the sealing element,  a pressure equal to atmospheric pressure prevails inside the tube and, after the sealing element,  a higher pressure than atmospheric pressure prevails.  The pressurization is achieved  in  that  a  second  belt  take-off  folds together the tube, so that the compressed air fed in through the probe pipe causes a higher tube internal pressure,  since  the  sealing  element  bears  in  a sealing manner against the inside of the tube.  As a result, a substantial pressure separation is effected at the point of the sealing element.   In a first heating chamber, the tube is heated to the stretching temperature and is transported by a second belt take-off at a stretching speed, increased relative to the take-off  speed  of  the  first belt  take-off,  to  a second heating chamber,  in which a heat setting of the tube takes place.  From the heating chamber, the tube is transported onward at the same, greater or lower speed than the stretching speed by a third belt take-off and wound up by a deflection roller onto a wind-up roller.
Patent CA-1305341-C (CA)
Title: Optical gun sight
Inventor: BINDON GLYN A J
IPC: G02B27/34
Filed: 1988-10-19
Granted: 1992-07-21
Abstract: ABSTRACT OF THE DISCLOSURE        An optical gun sight having a central axis for a hand gun, shot gun and/or rifle having a firing axis and with the gun sight having an image erector system located generally at the focal plane of the gun sight and with the gun sight including adjustment means operative on the image erector system for selectively moving the image erector system in two transverse directions which are in turn transverse to the central axis to provide calibration of the position of the image of the target relative to the firing axis of the hand gun, shot gun or rifle whereby compensation can be provided for the tranjectory of the bullet to the target.
Patent CA-1301228-C (CA)
Title: Laminar electrical heaters
Inventor: CLAYPOOL JAMES L
IPC: B32B7/025
Filed: 1988-12-07
Granted: 1992-05-19
Abstract: ABSTRACT      An electrical heater which comprises a conductive polymer resistive element and two laminar electrodes.  The electrodes are shaped and positioned such that there is a continuous margin around the periphery of the resistive element on at least one surface.  The margin is particularly useful in reducing arcing which may occur between the electrodes.
Patent CA-1329345-C (CA)
Title: Electric massaging apparatus
Inventor: MASUDA ISAMU
IPC: A61H15/00
Filed: 1989-01-03
Granted: 1994-05-10
Abstract: ABSTRACT         This  invention  relates  to  an  electric  massaging apparatus  for applying press and vibration to a body to obtain massaging effect.  The electric massaging apparatus of this  invention  is provided with a finger pressure roller having a built-in vibrator driven by a d.c. power supply, and a pair of operational handles are projected at both ends of the  finger  pressure  roller.   The  operational  handle  is provided with a power supply of batteries as a drive source, and the  vibrator  is  electrically connected  to the  power supply.  The conventional electric massaging apparatus is so designed that at  the  time of driving the apparatus,   an attachment plug  is  inserted into a plug socket,   It has therefore no problems such as limitation of places where the apparatus can be used or breaking the cord occurs.  In these points,  the electric massaging apparatus of this invention uses batteries as a drive source for the vibrator, dispensing with any problem of limitation in usable places and breaking of cord.
Patent CA-1295732-C (CA)
Inventor: RAGUENET GERARD
IPC: H01Q5/45
Filed: 1989-02-09
Granted: 1992-02-11
Abstract: Antenne multifréquence, utilisable notamment dans le domaine des télécommunications spatiales. Une telle antenne comprend une première antenne imprimée fonctionnant à une ou plusieurs fréquences, et une seconde antenne disposée devant la première antenne utilisant la même surface rayonnante et fonctionnant à une fréquence différente. L'antenne trouve une application notamment dans le domaine des télécommunications spatiales.
Patent CA-1277841-C (CA)
Title: Sectional sickle bar
Inventor: SPECK CLEO T
IPC: F16B35/04
Filed: 1989-02-22
Granted: 1990-12-18
Abstract: SECTIONAL SICKLE BAR                 Abstract of the Invention A sectional sickle bar is provided.  The sickle bar includes a plurality of elongated bar segments and means for releasably joining adjacent joining ends of adjacent bar segments.  The joining means includes a special section and at least three fasteners.  Each fastener includes a bolt, a nut and reciprocal thread means for screwing the nut onto the bolt.  Adjacent joining ends of adjacent bar segments are joined together by the fasteners and the special section to form a lap joint.  In a preferred embodiment, a special fastener having an oblong shank is provided.          Preferably, the fastener has an offset threaded end portion for receiving a reciprocally threaded nut.
Patent CA-1321615-C (CA)
Title: Spark timing control
Inventor: HANSEN MARK C
IPC: F02P7/077
Filed: 1989-03-17
Granted: 1993-08-24
Abstract: SPARK TIMING CONTROL          Abstract of the Disclosure A spark timing control for an electronic internal combustion engine ignition system that provides a constant spark advance regardless of engine speed.  A series of crankshaft pulses are developed which occur at each 60 degrees of rotation of the crankshaft.  The system has a source of constant frequency clock pulses which are counted up by an up-counter during 60 degree periods.  The count attained by the up-counter during a 60 degree period is loaded into a down-counter.  The up-counter is now counted up at a constant rate from zero and the down-counter is counted down at a constant rate from the count magnitude that was loaded into the down-counter. When the count magnitudes of the two counters are equal, a digital comparator that is connected to the counters develops an output signal that can be used to cause the firing of a spark plug.
Patent CA-1322894-C (CA)
Inventor: QUELLA DANIEL C
IPC: E01B29/26
Filed: 1989-04-20
Granted: 1993-10-12
Abstract: ANCHOR SPREADER     ABSTRACT OF THE DISCLOSURE        An anchor spreader having a frame which mounts a head assembly for vertical movement between a raised travel position and a lowered operative position and with the head assembly having spreader members which can be positioned immediately above a tie and inwardly of portions of rail-mounted anchors extending above the tie. The spreader members can be moved apart to shift the rail-mounted anchors along the rail away from the tie to achieve the anchor spreading. Positive clamp structure securely holds the head assembly in position longitudinal of the rail whereby the head assembly can remain in fixed position regardless of the reaction to forces exerted in spreading one or more rail mounted anchors.