baber/WOPTO huggingface dataset:
Patent CA-1275323-C (CA)
Title: Telephone handset with static discharge prevention
Inventor: BUSCHE ALAN C
IPC: H04M1/04
Filed: 1986-06-20
Granted: 1990-10-16
Abstract: TELEPHONE HANDSET WITH STATIC DISCHARGE PREVENTION     Abstract of the Disclosure A telephone handset with static discharge prevention has a dielectric membrane extending over the metal ferrule of the transmitter, the membrane spaced from the ferrule by an annular dielectric spacer.  At the receiver, a metal shunt on the front of the receiver has a central aperture for acoustic access.  An annular dielectric membrane is positioned in the aperture and a dielectric membrane extends over the aperture, dielectric member and shunt.  The membrane has a small hole within the annular dielectric member.  The dielectric membrane at the transmitter increases the breakdown voltage to a value which will avoid static discharge to the user.  The dielectric membrane and dielectric spacer at the receiver forms a long and sinuous discharge path which raises the breakdown voltage to a value which also avoids static discharge to a user.
Patent CA-1311362-C (CA)
Title: Screen cleaning in cil and cip systems
Inventor: ELMORE CARL L
IPC: B07B1/50
Filed: 1986-07-02
Granted: 1992-12-15
Abstract: ABSTRACT OF THE DISCLOSURE     In carbon-in-pulp (CIP) and carbon-in-leach (CIL) processes, especially those utilizing pure oxygen instead of normal air to increase the overall efficiency of the cyanide leaching-adsorption process in the recovery of gold and/or silver from ores, the screen within each tank which surrounds the slurry outlet is kept clean.  The cleaning action is accomplished by linearly reciprocating the screen first slowly in one direction, and then quickly in another (to cause back flushing); or by rotating a cleaning rotor on the inside of a cylindrical screen.  The cleaning rotor may be connected to the same shaft as an agitator disposed above a draft tube within the tank.  The screen surface is tapered in its direction of movement, and during movement has a tendency to transport and concentrate the carbon (charcoal) particles at the far end of the slow stroke, and the concentrated particles can be withdrawn and recirculated to other tanks in the system.
Patent CA-1294322-C (CA)
Inventor: ALTMEJD MORRIE
IPC: H02H7/18
Filed: 1986-12-01
Granted: 1992-01-14
Abstract: SILICON DIODE LOOPING ELEMENT        FOR PROTECTING A BATTERY CELL              ABSTRACT OF THE DISCLOSURE          A special silicon diode is disclosed which is shunted across each cell in a series connected string of battery cells.  In response to a cell failure which causes a cell to open circuit, all battery current is routed through the diode looping element.  This current causes a permanent state change of the looping element thereby causing the looping element to become a permanent short circuit.  Thus, the failed cell is effectively removed from the circuit.
Patent CA-1295457-C (CA)
Title: Method and apparatus for forming frogs in the sides of a concrete element
Inventor: SEPPAENEN AIMO
IPC: B28B11/08
Filed: 1987-01-16
Granted: 1992-02-11
Abstract: Abstract of the Disclosure A method and apparatus for forming frogs in the sides of a slip-formed concrete element, especial-ly a hollow-core slab.    The frogs are formed in the sides of the element by removing cast material from the sides by a reciprocating scraping action.    The reciprocating movement parallel to the side of the element is effected with a drive motor and a lever assembly.   By means of the method,  it is possible to obtain a desired frog shape and depth without damaging the side surfaces.
Patent CA-1272091-C (CA)
Title: Refillable injection device
Inventor: HOSKINS MATTHEW W
IPC: A61F2/958
Filed: 1987-03-19
Granted: 1990-07-31
Abstract: REFILLABLE INJECTION DEVICE Abstract of the Disclosure In a refillable injection device for use with a dilatation catheter, a large bore syringe is used to refill a small bore syringe without disconnecting the syringe assembly from the catheter. A one-way valve prevents fluid from moving in the opposite direction. Movement of the small bore syringe plunger produces a high pressure, low volume flow and can be repeated if necessary after the small bore syringe is refilled. subsequent movement of the large bore syringe plunger produces a low pressure, high volume flow.
Patent CA-1304689-C (CA)
Title: Horseshoe
Inventor: TUUNANEN ARNE
IPC: A01L/
Filed: 1987-04-16
Granted: 1992-07-07
Abstract: ABSTRACT     A horseshoe (1) conformed substantially to the U-shaped sole of the hoof and having a reinforcing insert (16) of a flexible and, alternatively, partially curable material and a portion (17) which encloses said insert (16) and is made of an elastic friction material. The insert (16) is narrower than the width of the U-shaped sole such that thrust, shock and shear loads generated as the horse moves at a walking, trotting or galloping pace are elastically absorbed by the portion (17) en-closing said insert. The insert (16) comprises four surfaces extending along the entire shoe, at least three of which, the lower, the outer and the inner one (9), are provided with longitudinal grooves (10, 11, 18), the lower groove (18) preferably having a tapering cross-section to receive and guide the tapered nails for at-taching the shoe, and the grooves (10, 11) in the outer and inner surfaces (9) serving on the one hand to increase the total surface area of the insert and make the vulcani-sation surface thereof larger and, on the other hand, to make the finished shoe more easily adjustable.            Fig. 1
Patent CA-1284820-C (CA)
Inventor: KOS JOSEPH M
IPC: F03D9/00
Filed: 1987-04-21
Granted: 1991-06-11
Abstract: Abstract Speed Advoidance Logic For A  Variable Speed Wind Turbine A variable speed wind turbine is controlled in a way which avoids the turbine lingering at a critical speed which would otherwise tend to cause excessive vibration.  The disclosed method and apparatus increases speed at a selected rate with respect to generator output power except in the vicinity of the critical speed.  The selected rate is changed in the vicinity of the critical speed to a different rate which is selected slower in the selected embodiment, to avoid commanding the critical speed.  After the output power increases or decreases beyond the critical point, a deliberate discontinuity in the speed command signal is induced.  A rapid speed change through the critical speed is accompanied by a corresponding power output change.  If the speed is increasing at a selected slower rate below the critical speed, and the speed command signal is stepped to a higher level just before reaching the critical speed, the speed will rapidly increase and quickly pass through the critical speed while the power output decreases.  Similarly, if the speed is decreasing at a selected slower rate above the critical speed, and the speed command signal is stepped to a lower level just before reaching the critical speed, the speed will rapidly decrease and quickly pass through the critical speed while the power output increases.
Patent CA-1293630-C (CA)
Inventor: ZARAGOZA VINCENTE M T
IPC: A61C17/00
Filed: 1987-04-22
Granted: 1991-12-31
Abstract: METHOD AND DEVICE FOR PRODUCING THE WHITENING OF LIVE    TEETH WITH PATHOLOGICAL AND NORMAL COLORATIONS                          ABSTRACT     A method and a device are described for producing the whitening of live teeth with pathological and normal color-ations, destined to whitening  any tooth with normal colour and  furthermore  eliminating  the  pathological  coloration produced by aetiologies of different origen.  The whitening of the teeth (6) is effected applying different chemical products to the dental enamel,  covering the teeth to be treated with a metallic plate containing an absorbent ma-terial  with a chemical whitening product which acts in the presence of heat  and provokes the reaction of said product which will act on all sides of  the dental drown, producing whitening  of  the  teeth.   The device  is constituted,  in essence, by a whitening device, comprised by a thermic heat ing unit, whether or not controlled by microprocessor, heat ing elements, temperature,  time and alarm sensors and con-trols.            (Figure 3).
Patent CA-1307465-C (CA)
Title: Sucralfate preparations for application on esophagus mucosa
Inventor: ISHIHARA KOUJI
IPC: A61K47/38
Filed: 1987-05-14
Granted: 1992-09-15
Abstract: SUCRALFATE PREPARATIONS FOR APPLICATION ON ESOPHAGUS MUCOSA               Abstract of the Disclosure A sucralfate preparation in the form of a suspension which is suitable for curing esophagitis or esophageal ulcer and a method of preparation thereof are disclosed.  The sucralfate preparation comprises sucralfate suspended in an aqueous solution or aqueous suspension of water-soluble or water-insoluble polymeric substance as a suspending agent or thickening agent and has a viscosity in the range from 1,000 to 5,000 cP.  This sucralfate preparation adheres selec-tively to ulcerated or inflammatory sites of the esophageal mucosa and is very effective as a cure for esophagitis or esophageal ulcer.
Patent CA-1310609-C (CA)
Title: Method and apparatus for generating acid and base regenerants and theuse thereof to regenerate ion-exchange resins
Inventor: DAVIS THOMAS A
IPC: B01J49/90
Filed: 1987-05-20
Granted: 1992-11-24
Abstract: ABSTRACT A method and apparatus for generating acid and base regenerant solutions by utilization of a bipolar membrane electrodialysis stack.  A mineral-containing salt solution is continuously circulated through the stack to produce a partially demineralized salt solution, an acid solution and a base solution.  The acid solution and base solution are continuously circulated through the stack to increase the concentration thereof.  The circulating salt solution is controlled to maintain the salt concentration in the range of 2% to 25% and the pH in the range of 8-11.  The concentrations of the circulating acid solution and base solution are controlled to maintain the concentrations thereof in the range of .2N to 3.0N.  The concentrated acid solution and base solution are utilized to regenerate exhausted ion-exchange resins.
Patent CA-1279810-C (CA)
Title: Polypropylene multi-layer film
Inventor: KAKUGO MASAHIRO
IPC: B32B27/08
Filed: 1987-06-25
Granted: 1991-02-05
Abstract: ABSTRACT OF THE DISCLOSURE        A polypropylene multi-layer film which comprises a crystalline polypropylene substrate layer having laminated to at least one side thereof a sheet of a resin composition comprising:      (A)       10-90% by weight of a propylene random copolymer satisfying that (i)    the comonomer content is 4-15% by weight, (ii)   the Vicat softening point is 122°C or less, and (iii)  the cold xylene-soluble portion content is 15% by weight or less, (B)    10-90% by weight of a copolymer of propylene and an .alpha.-olefin having four or more carbon atoms or a copolymer of propylene, an .alpha.-olefin having four or more carbon atoms and ethylene satisfying that:   (i)    the content of the .alpha.-olefin having four or more carbon atoms is 8-35 mole%, (ii)   the ethylene content is 5 mole% or less, (iii)  the cold xylene-soluble portion content is 15-70% by weight, and (iv)   the .DELTA.haze is 5% or less, and (C)    0-15% by weight of a highly crystalline poly-propylene having a melting point of 150°C or more.  This polypropylene multi-layer film has an excellent, low-temperature heat sealing property, a good transparency, a good scratch resistance, and so on.
Patent CA-1321074-C (CA)
Inventor: JANIAK ROBERT A
IPC: C21C5/52
Filed: 1987-07-31
Granted: 1993-08-10
Abstract: Process and apparatus for the continuous melting of scrap in an electric D.C. furnace, in which the D.C. source (23) supplies vault electrodes (4) and hearth electrodes (8) by means of respective feed conductors (7) and return conductors (9). The scrap is fed through an orifice (12). The vault electrode or electrodes (4) are arranged on the other side of the axis of the shaft (1) in relation to the orifice (12). The hearth electrode or electrodes (8) are offset towards the orifice (12), and the return conductor or conductors (9) connected to the hearth electrode or electrodes (8) are led under the bottom (2) of the shaft (1) and as near as possible to the latter, being directed towards the opposite zone of the furnace where the vault electrodes (4) are located, as to generate magnetic fields capable of deflecting the arc or arcs towards a zone set apart from the vault electrodes (4) and located substantially below the scrap feed orifice (12 ).
Patent CA-1311262-C (CA)
Title: Device for indicating the short-circuiting of a lightning arrester
Inventor: CINQUIN JEAN-PIERRE
IPC: G01R31/02
Filed: 1987-08-06
Granted: 1992-12-08
Abstract: ABSTRACT OF THE DISCLOSURE       In order visually to indicate the existence of a "continuation" current through a lightning arrester, an indicator is associated therewith, which is formed by an elastically deformable strip maintained retracted against the capsule by a bolt mechanism associated with an electrical filter which causes fusion of the fusible wire under the effect of a "continuation" current. Once its end is released, the strip projects outwardly of the lightning arrester and marks the location of the defective insulation.
Patent CA-1300397-C (CA)
Title: Feedback-controlled method and apparatus for processing signals used in oximetry
Inventor: CHEUNG PETER W
IPC: A61B5/00
Filed: 1987-08-17
Granted: 1992-05-12
Abstract: FEEDBACK-CONTROLLED METHOD AND APPARATUS  FOR PROCESSING SIGNALS USED IN OXIMETRY          Abstract A feedback control system is disclosed for use in processing signals employed in pulse transmittance oximetry. The signals are produced in response to light transmitted through, for example, a finger at two different wavelengths. Each signal includes a slowly varying baseline component representing the relatively fixed attenuation of light produced by bone, tissue, skin, and hair. The signals also include pulsatile components representing the attenuation produced by the changing blood volume and oxygen saturation within the finger. The signals are processed by the feedback control system before being converted by an analog-to-digital (A/D) converter (72) for subsequent analysis by a microcomputer (16). The feedback control system includes a controllable offset subtractor (66), a programmable gain amplifier (168), controllable drivers (44) for the light sources (40, 42), and the microcomputer (16). The microcomputer (16) receives signals from the offset subtractor (66), gain amplifier (68), drivers (44) and A/D converter (72) to produce signals that control the function of the subtractor (66) and drivers (44) in the following manner. Normally, the drivers (44) are maintained within a predetermined current range. In the event the microcomputer (16) senses an output from the converter (72) that is not within a predetermined range, the drive signal is adjusted to produce an acceptable signal. The magnitude of the offset removed by the subtractor (66), as controlled by the microcomputer (16), is maintained at a constant level when the converter (72) output is within a first predetermined range and is a predetermined function of the converter (72) output when that output falls within a second predetermined range.
Patent CA-1336220-C (CA)
Inventor: FELDHUES MICHAEL
IPC: C25B3/29
Filed: 1987-08-25
Granted: 1995-07-04
Abstract: The invention relates to intrinsically electrically con-ductive polymers, preferably oligomers, which, in the oxidized form, are completely soluble in dipolar aprotic solvents at room temperature and which contain structural units which are derived from at least one monomer of the formula (I) (I)   in which R1 is a C1-C12-alkoxy group or -O(CH2CH2O)nCH3 with n = 1 to 4 and R2 is a hydrogen atom, a C1-C12-alkyl group, a C1-C12-alkoxy group or -O(CH2CH2O)nCH3 with n = 1 to 4, or R1 and R2 together are -O(CH2)m-CH2 or -O(CH2)m-O- with m = 1 to 12.  The invention also relates to a process for the preparation of these polymers by electrochemical polymerization of at least one monomer of this formula (I) in the presence of a conductive salt, the anode having a specific surface area of at least 0.01 m2/g and preferably a gauze, sponge, fabric or felt structure, the electrolyte solvent being dipolar and aprotic and the electrolyte system being moved only slightly or not at all relative to the anode.  The polymers according to the invention can readily be used especially for coating purposes.
Patent CA-1306778-C (CA)
Title: Remote switching device for smoke detector
Inventor: BERNIER MAURICE
IPC: G08B17/10
Filed: 1987-10-14
Granted: 1992-08-25
Abstract: ABSTRACT OF THE DISCLOSURE     The switching device is enclosed in a casing fixed to a wall below  a ceiling-mounted  conventional smoke detector, so as to be accessible.  The switching device includes a holding relay, a  dry-cell  battery  and  a  time-delay  circuit.   The dry-cell battery replaces a similar battery normally in the smoke detector itself,    In  normal  position,  the  holding relay connects the battery of the switching  device  to  the  circuit  of  the smoke detector,   Whenever the  smoke detector sounds a false alarm, a house occupant actuates the holding relay to disconnect the smoke detector  circuit  and  stop  the  alarm.    The  battery  in the switching  device  thereafter  is  connected  to  the  time-delay circuit which  returns the  holding relay  to its normal position after a period of, say, twenty minutes,
Patent CA-1290739-C (CA)
Inventor: LUCEK JOHN W
IPC: C10M103/00
Filed: 1987-12-16
Granted: 1991-10-15
Abstract: ABSTRACT          A new and superior silicon nitride bearing  material is produced when properly processed silicon nitride powder, blended with a sintering aid, is hot isostatically pressed to essentially theoretical density.
Patent CA-1338077-C (CA)
Title: Heterodimeric transforming growth factor-beta
Inventor: LUCAS ROGER C
IPC: A61P19/10
Filed: 1988-01-29
Granted: 1996-02-20
Abstract: A polypeptide transforming growth factor found in porcine platelets, having activity in the TGF-.beta. assay and a molecular weight of about 25 kDa.  The factor is a heterodimer, one chain of which has an N-terminal sequence very different from human platelet TGF-.beta., and the other chain of which has an N-terminal sequence identical to that of human platelet TGF-.beta..  The factor is purified using gel filtration and reverse phase HPLC.
Patent CA-1330964-C (CA)
Inventor: LIPSZTAJN MAREK
IPC: C25B1/26
Filed: 1988-02-16
Granted: 1994-07-26
Abstract: Abstract of the Disclosure Chlorine dioxide is produced electrolytically in the cathode compartment of an electrolytic cell using a three-dimensional  high  surface-area  cathode.    The cathode  compartment  is separated  from  an  anode compartment  by  a  cation-exchange  membrane.    Sodium chlorate is reacted with hydrogen ions and chloride ions in  the  cathode  compartment  and  chlorine  dioxide  is vented  from the  cathode  compartments.   Chlorine co-produced with the chlorine dioxide is reduced at the cathode to provide chloride ions for the reaction while electrolytically-produced hydrogen ions are transferred across the membrane from the anode compartment to the cathode compartment to provide hydrogen ions for the reaction.
Patent CA-1301363-C (CA)
Title: Apparatus for preparing mail pieces
Inventor: AXELROD BARRY H
IPC: B07C3/18
Filed: 1988-03-11
Granted: 1992-05-19
Abstract: APPARATUS FOR PREPARING MAILPIECES                         ABSTRACT      Apparatus is provided for preparing mailpieces.  The apparatus includes structure and printing and for supplying a plurality of stationery items. In addition the apparatus includes a computer.  The computer includes structure for receiving and storing data including different letter datum corresponding one-for-one to different information provided for preparing each of a plurality of different mailpieces. The information for each mailpiece includes a postal zip code.  The computer includes structure for identifying respective postal zip codes which each include a plurality of predetermined elements.  In addition, the computer includes structure for sorting from the data the letter datum corresponding to information which includes an identified postal zip code.  The computer also includes structure for causing the supplying means to selectively supply to the printing structure the respective stationery items for each mailpiece for which a postal zip code is identified, and the computer includes structure for causing the printing structure to print the information corresponding to the sorted letter datum for each mailpiece on the stationery items selected therefor.
Patent CA-1287810-C (CA)
Title: Can top opening assembly and method of making same
Inventor: GRIGORENKO DONALD C
IPC: B21D51/44
Filed: 1988-05-03
Granted: 1991-08-20
Abstract: Abstract of the Disclosure:    An integral tongue is lanced from a steel can top except along a transverse bend line scored on the undersurface of the tongue adjacent to the can top.  An arcuate nose portion of a pull tab is riveted to a first portion of the tongue.  Opposing shoulders on the tab overlie portions of the can top adjacent to the tongue.  A ring or lever portion of the tab is lifted and pivoted on the shoulders, thereby bending the first portion of the tongue under a ribbed second portion.  The pull tab is then pivoted in the opposite direction, thereby displacing the entire tongue outwardly relative to the can top along the bend line.
Patent CA-1314985-C (CA)
Title: Optical head
Inventor: ANDOU NOBUYOSHI
IPC: G11B7/08
Filed: 1988-07-22
Granted: 1993-03-23
Abstract: ABSTRACT OF THE DISCLOSURE     The present invention relates to an optical head of an optical recording and reproducing device for optically re-cording or reproducing informations.  In the optical head according to the present invention, when a holder, which is provided with an optical element fixedly disposed thereon, is fixed to a housing member, the holder is housed in a guide hole of the housing member and then a screw is screwed into a tapped hole formed in the housing member not so as to reach the guide hole to press a bottom portion of the tapped hole against the holder.  Accordingly, with the optical head according to the present invention, a torque of rotation generated when the screw is rotated is absorbed in the bot-tom portion of the tapped hole, so that the holder is not moved when the screw is screwed into the tapped hole, where-by the optical element fixedly disposed on the holder can be easily positioned at an appointed position.
Patent CA-1332963-C (CA)
Title: Virtual local area network
Inventor: CHAN KENNETH K
IPC: H04L12/46
Filed: 1988-08-02
Granted: 1994-11-08
Abstract: A system is disclosed for completing communication connections from end-users served by a connectionless (broadcast) type system in a manner which allows expansion of the calling area beyond the immediate physical limitations of the broadcast media.           The system is based upon a device for mediating between the connectionless system and a connection oriented system. The device creates logical local area networks interconnectable by the connection oriented system. Calling user identification is used in conjunction with call completion data stored in a central memory for controlling all interconnections.
Patent CA-1306202-C (CA)
Inventor: AARESTAD JEROME K
IPC: F16H55/08
Filed: 1988-08-04
Granted: 1992-08-11
Abstract: ABSTRACT OF THE DISCLOSURE           A micro-contoured surface is formed about a sub-stantial portion of the edge of the end bearing face of each gear tooth of a gear having a plurality of circumferential gear teeth each with an end bearing face for carrying an axial thrust load against a flat housing bearing face or the like.  The micro-contoured surface forms a wedge space be-tween the bearing faces which when filled with a fluid es-tablishes a hydro-dynamic film pressure distribution over the entire end bearing face of the gear tooth upon relative motion between the bearing faces.