baber/WOPTO huggingface dataset:
Patent CA-1290526-C (CA)
Title: Mold and die operation
Inventor: WIESER MARIANNE
IPC: B29C39/24
Filed: 1987-11-06
Granted: 1991-10-15
Abstract: IMPROVEMENTS IN MOLD AND DIE OPERATION                 ABSTRACT OF THE DISCLOSURE           A mold or die having two parts with a cavity and an interface between them and a feed opening in one of the mold parts cooperates with a charge feed for raw changes and any evacuation device providing a low pressure. Alternatingly the feed and the evacuation is connected to the the feed opening, so that upon connection of the evacuation device a pressure gradient obtains in the feed opening for obtaining an outflow of air from the mold cavity through the feed opening, while on connecting the feed to the feed opening, the pressure gradient in the feed opening is reversed for obtaining a flow of charge material into the mold cavity; a channel in one of the mold parts extends from the interface and peripherally in relation to the cavity, there being a shallow slot connecting the channel to the cavity; a seal circumscribes the channel to seal the cavity and the channel against atmospheric pressure; and a duct means in the one mold part having the channel leads from the the channel to the evacuation so that the reversed pressure gradient into the feed opening and out of the cavity continues to discharge gases that develop during filling.
Patent CA-1325910-C (CA)
Title: Turret comprising a rotating joint and an angular velocity reduction device
Inventor: BOURGIE PAUL
IPC: F41A27/18
Filed: 1987-12-08
Granted: 1994-01-11
Abstract: ABSTRACT OF THE DISCLOSURE    A  turret  comprising  a  rotating joint and an angular velocity  reduction  device  is disclosed. A  tracking turret comprises  an  angular  velocity  reduction  device  with an elliptical  wave  generator,  an externally-toothed flexible ring  and  an  internally-toothed rigid ring, and a rotating joint  used  for the transmission of electrical signals. The invention   can   be   applied  chiefly  to  the  making  of close-range anti-aircraft defence turrets.
Patent CA-1306689-C (CA)
Title: Method of preparing a vaccine against hepatitis b and the vaccine thus obtained
Inventor: ADAMOWICZ PHILIPPE J
IPC: C12P21/08
Filed: 1987-12-09
Granted: 1992-08-25
Abstract: ABSTRACT OF THE DISCLOSURE         In a method for preparing a vaccine against hepatitis B,  surface antigene particles  (HBsAg) of the hepatitis B virus are produced by expression from a CHO cell culture transfected by a plasmid by recovering the culture supernatant which, after sterilizing filtration, is  concentrated  and  subjected  to  a  precipitation fractionated with PEG,  the precipitate obtained being subjected to rate zonal centrifugation then to isopycnic zonal  flotation  type  centrifugation,  following  which chromatography  is  carried  out  in  an  anion  exchange medium. The vaccine is remarkable by its purity and its immunogenicity, particularly by its anti-pre S2 antibody inducing power.
Patent CA-1287660-C (CA)
Inventor: JACOBSEN STEPHEN C
IPC: H02N1/00
Filed: 1987-12-10
Granted: 1991-08-13
Abstract: ABSTRACT OF THE DISCLOSURE     A microgeometric electric field machine includes arrays of conductors formed on or carried by a plurality of substrates.          The conductors on a first group of substrates carry electical charges, with alternate conductors being charged positively and the other conductors being charged negatively.  A second group of substrates are interleaved with the first group in close proximity therewith.  Also included is a voltage source for successively supplying alternate positive and negative electrical charges to the conductors of the second group of substrates.  Effectively a pattern of alternate positively and negatively charged conductors is established for the second group of substrates and these patterns are caused to move, relative to the substrates, along the arrays of conductors to produce "moving" electric force fields which cause one group of substrates to move with respect to the other group.  The substrates may be in the form of stacked discs with the conductors being radially positioned thereon, where one group of discs is caused to rotate with respect to another group.  Alternatively, the substrates may be in the form of stacked planes with the conductors positioned in parallel thereon, where one  group of planes is caused to move linearly with respect to the other group, and in a direction perpendicular to the conductors.  The configuration of the substrates, positioning of the conductors, and inter-leaving of the substrates and conductors could take a variety of forms.
Patent CA-1290960-C (CA)
Title: Method and apparatus for forming welded rings
Inventor: MODGLIN DONALD D
IPC: B23K9/025
Filed: 1988-02-12
Granted: 1991-10-22
Abstract: A B S T R A C T             The invention is a welding machine for making rings by micro plasma  torch welding  of  opposed  clamped  ends  of  a forming blank and a method for making such rings.  An automatic sequence of operations enabling a very short cycle of operation is provided. Beginning with strip stock, an end portion of the strip is clamped and a ring is formed while the strip remains clamped.   The end portions of the formed blank are gripped and bent into a substantially circular configuration, with the ends of the blank presented in opposed relationship.  The opposed ends are then welded using a micro plasma torch,  while  the blank remains  gripped.    The  machine  includes  a  pair  of  slidable carriage bases, each carrying a pivot arm for bending the blank.
Patent CA-1301270-C (CA)
Inventor: MEYER JEFFRY R
IPC: H02G5/06
Filed: 1988-02-19
Granted: 1992-05-19
Abstract: 11                  53,188 ABSTRACT OF THE DISCLOSURE An insulator for supporting the inner conductor of a gas insulated transmission line is configured so that its outer extremity is a simple blunt portion that fits loosely within a bearing block of insulating material of lower dielectric constant than the insulator itself so as to provide structural simplicity and improved performance through lessened breakdown susceptibility.
Patent CA-1299547-C (CA)
Title: Wobble plate type compressor with variable displacement mechanism
Inventor: KIKUCHI SEI
IPC: F04B27/08
Filed: 1988-02-19
Granted: 1992-04-28
Abstract: WOBBLE PLATE COMPRESSOR WITH VARIABLE DISPLACEMENT MECHANISM          ABSTRACT OF THE DISCLOSURE      A wobble plate compressor with a variable displacement mech-anism is disclosed. The compressor includes a compressor housing having a crank chamber and a cylinder block. A plurality of cylinders is formed in the cylinder block. A drive shaft is rotatably supported in the housing. A rotor is fixed on the drive shaft and is hingedly con-nected to an inclined plate through a hinge mechanism. The hinge mechanism includes a first arm portion which is formed on either the rotor or inclined plate, a second arm portion having an elongated hole on the other of the rotor or the inclined plate, and a guide pin fixedly disposed in the hole of the first arm portion. A wobble plate is dis-posed adjacent the inclined plate and converts rotational motion of the inclined plate into nutational motion. A plurality of pistons are coupled to the wobble plate through a plurality of piston rods. Each piston is reciprocatingly fitted within a respective one of the cylin-ders. The stroke volume of the pistons changes according to the vari-ation of the angle of the inclined plate. The elongated hole is formed so that the top clearance of the piston is a minimum when the angle of the inclined plate is largest, and the top clearance of the piston is a maximum when the angle of the inclined plate is smallest. The elongated hole is oriented in a manner that while the range of the inclined angles of the inclined plate is small, the capacity range vari-ance for the compressor is large.
Patent CA-1287028-C (CA)
Title: Distributed coaxial light source producing constant target luminance
Inventor: CHARLESWORTH ARTHUR M
IPC: H04N7/18
Filed: 1988-03-18
Granted: 1991-07-30
Abstract: ABSTRACT             A luminous source for illuminating targets in e.g. machine vision systems, remote manipulator systems used in outer space, etc., producing nearly constant target luminance as the target maintains various distances from the camera.  This is achieved by the luminous source having a dual concentric ring shape of predetermined radii, intensity ratios and radial widths.
Patent CA-1331154-C (CA)
Title: Proteolytic enzymes
Inventor: SAMAL BABRU B
IPC: C12N9/58
Filed: 1988-03-31
Granted: 1994-08-02
Abstract: Abstract of the Disclosure This  disclosure  relates  to  a  novel  class  of  serine proteases  isolated  from  the  culture  medium of  fungus Tritirachium album.  The serine proteases disclosed have a high degree of stability in detergent formulations.  Also disclosed are DNA sequences, host cells and processes for producing  such  serine  proteases  using   recombinant techniques.
Patent CA-1306732-C (CA)
Title: Butterfly valve
Inventor: RAYMOND FRANK J JR
IPC: F16K1/22
Filed: 1988-04-08
Granted: 1992-08-25
Abstract: ABSTRACT     There is disclosed a butterfly valve having a stem which extends through a disc rotatable within a seat about an annular hub to open and close the valve.  The stem and disc have flat sides which engage one another in order to rotate the disc within the stem, and outer end of the stem is releasably retained in a bore through a neck on the hub.
Patent CA-1308321-C (CA)
Inventor: HABER TERRY M
IPC: A61M5/32
Filed: 1988-04-25
Granted: 1992-10-06
Abstract: SHIELDED SAFETY SYRINGE            ABSTRACT OF THE DISCLOSURE             A disposable syringe (1, 130 or 160) having particular application to vacuum tube phlebotomy and comprising respective inner (2, 132 or 162) and outer (4 or 134) needle carrying and protective cylinders which are coaxially aligned and axially extensible relative to one another.  The inner and outer cylinders may be locked in a retracted position, whereby a hypodermic needle (22 or 138) is accessible for drawing blood samples from the patient to an evacuated tube (52) at the inner cylinder.  After the last blood sample has been taken, the inner and outer cylinders may be locked in an axially extended position, whereby the hypodermic needle is completely surrounded and shielded by the outer protective cylinder so as to permit the safe handling of the syringe while avoiding an accidental needle strike and the possible spread of a contagious disease.
Patent CA-1330214-C (CA)
Inventor: GIEBELER ROBERT H
IPC: B04B9/12
Filed: 1988-05-12
Granted: 1994-06-14
Abstract: LOW SPEED DISENGAGEABLE VIBRATION DAMPER FOR CENTRIFUGE     ABSTRACT OF THE DISCLOSURE         In a damper for a centrifuge for damping the rotor of the centrifuge when the rotor changes rota-tional velocity through a critical vibrational rotation speed, an improved vibration damper is disclosed.  The damper is of the type wherein a conically shaped shaft extension is thrust into engagement with a friction bushing at a circular and central opening to increase shaft section and shift the critical vibrational rota-tion speed away from the particular critical vibration-al rotation speed being traversed.  The conical bushing is engaged by a solenoid and translates side-to-side rotor motion to an energy dissipating up and down mo-tion at the solenoid.  The improvement disclosed is a conically shaped cone having a concave radius of cur-vature in section.  For small shaft side-to-side excur-sion (due to small vibration) this conically shaped cone has an initial small slope with respect to the bushing to provide reduced damping of the rotor when small vibration and hence small displacements effect the rotor.  For large shaft side-to-side excursion, this same conically shaped cone has a large slope with respect to the low function bushing which provides for increased displacement of the bushing at large displace-ments of the rotor.  Discontinuities of damping are eliminated.  Shaft damping at small excursion is damped with corresponding small damping forces.  Shaft damping at large excursion is damped with larger force.  Trans-ition of damping between the two extremes is provided with an exponentially increasing damping force having no discontinuities.  There results a centrifuge damper that can decelerate a classified sample without appre-ciable declassification of the sample due to vibration induced diffusion.
Patent CA-1301343-C (CA)
Title: Oversampling a/d converter with two capacitor arrays
Inventor: KURAISHI YOSHIAKI
IPC: H03M1/12
Filed: 1988-06-28
Granted: 1992-05-19
Abstract: ABSTRACT             Disclosed is an oversampling A/D converter which com-prises two each of sample and hold circuits, subtracters and D/A converters.  The two sample and hold circuits alternately sample and hold the input analog signal in a predetermined first period and generate first and second sampled signals.  The two D/A converters convert first and second digital local signals into corresponding first and second analog local signals, respectively.          The two subtracters determine the respective differences between the first and second sampled signals on the one hand and the first and second analog local signals on the other, and generate first and second difference signals.  A selector alternately selects the first and second difference signals in a second period equal to half of the first predetermined period.  An integrator inte-grates the output signal of the selector and generates an inte-grated signal.  A quantizer quantizes the integrated signal and generates a quantized signal.  A control logic circuit generates digital signals based on the quantized signal.  A signal distribut-ing circuit distributes the digital signal alternately to the D/A converters in the second period as the first and second digital local signals.  The present invention makes it possible to achieve about twice as fast operation as conventional oversampling A/D converters by providing and alternately operating two each of sample and hold circuits, subtracters and D/A converters.
Patent CA-1302038-C (CA)
Title: Mobile home skirting system
Inventor: STOECKER DON R
IPC: E04B1/343
Filed: 1988-06-28
Granted: 1992-06-02
Abstract: Abstract of the Disclosure A framework for extending around the lower periphery of trailer house of mobile home, including corner posts and intermediate posts which are adjustable in length. Upper, lower and intermediate links interconnect the upstanding corner posts with the intermediate posts to form a framework. Plywood, sheet metal or other coverings are then connected to the framework to seal the area below the trailer house from the outside atmosphere.
Patent CA-1326160-C (CA)
Inventor: HARING PETRUS G M
IPC: A23C15/14
Filed: 1988-07-08
Granted: 1994-01-18
Abstract: ABSTRACT            The present invention relates to a process for preparing a flavoured foodstuff by adding to edible material at least 0.05% (w/w) oxidized butterfat having an n-pentanal content of more than 0.5 ppm and/or a 2-trans-nonenal content of more than 0.05, more preferably of more than 0.1 ppm.  The present invention offers the advantage that it enables efficient and excellent flavouring of foodstuffs.  Another aspect of the present process is a flavoured foodstuff obtainable by the process according to the present invention.
Patent CA-1318291-C (CA)
Title: Tube construction for food and beverage tray
Inventor: BLACKMAN STEPHEN M
IPC: B65D5/4805
Filed: 1988-07-15
Granted: 1993-05-25
Abstract: ABSTRACT OF THE DISCLOSURE        A tray particularly useful by fast food establishments and the like for serving various products.  The tray is formed from a tube formed in a flat state for storage and shipment and being readily erectible .   A central portion of the top of such tube is provided with suitable product receiving openings which may open into a receptacle or which receive drink cups.  At one or more ends of the tray, there is a compartment which is defined by an end of the initial tube which is pivoted from a longitudinal position to an upstanding position.  The tray may have one or more internal stiffeners to prevent the collapse thereof when in tube form and stacked. Numerous embodiments are envisioned although only a limited number of alternatives is specifically disclosed.
Patent CA-1303751-C (CA)
Inventor: LOU PERRY W
IPC: H03F3/34
Filed: 1988-07-21
Granted: 1992-06-16
Abstract: SYSTEM FOR COMPENSATING FOR OFFSET VOLTAGES          IN COMPARATORS     Abstract of the Disclosure A variable input voltage is periodically introduced in first time periods to an amplifier such as a differential amplifier to obtain an output from the amplifier.  The amplifier may receive a reference voltage at one input terminal and the input voltage at a second input terminal in the first time periods.  The input to the amplifier is periodically shorted in second time periods alternating with the first time periods so that the reference voltage is applied to both input terminals.  Any offset voltage from the amplifier in the second time period may be converted to a binary signal to indicate the polarity of the offset voltage.  The binary signal may be introduced to a storage member such as a capacitance.  The capacitance accumulates energy in accordance with the characteristics of the binary signal in successive ones of the second time periods.  The energy in the capacitance is introduced to the output terminals of the amplifier in a direction to compensate for the offset voltage in the amplifier.  First switches may prevent the energy in the capacitance from being introduced to the output terminals of the amplifier during the second time periods.  Second switches may prevent the capacitance from being charged by the output from the amplifier during the first time periods.
Patent CA-1327842-C (CA)
Inventor: LEMAIRE JEAN-MARC
IPC: G01S3/784
Filed: 1988-07-29
Granted: 1994-03-15
Abstract: ABSTRACT OF THE DISCLOSURE    The  system  enables  the  lowering  of the false alarm rate  by  eliminating,  in  particular,  the spurious pulses created  by the detectors themselves. To this effect, it has one  or  more juxtaposed optical channels to cover the total field.  Each  optical  channel  is associated with a pair of detecting  elements  to  form  two detecting channels. After amplification  and  threshold  comparison in these channels, the   correlation   of  the  two  channels  is  produced  to eliminate  the  spurious  signals and select only the useful signal which is simultaneously present on both channels.
Patent CA-1313242-C (CA)
Title: Engine governor eddy-current damper mechanism and method
Inventor: HUFFMAN PAUL F
IPC: H02P9/04
Filed: 1988-08-15
Granted: 1993-01-26
Abstract: ENGINE GOVERNOR EDDY-CURRENT DAMPER MECHANISM                  AND METHOD               ABSTRACT OF THE DISCLOSURE         A method of damping governor over compensation and searching in an engine/generator set comprises the provision of an eddy current damper in association with a governor member of the system.   The preferred eddy current damper comprises a governor arm having an eddy current  plate  on  one  end  thereof, the  plate  being oriented to move through a magnetic field generated by an  industrial magnet mounted  on  the  engine/generator set.  As the governor arm moves in response to changes in engine speed the eddy current plate is passed through the magnetic field, the generated eddy current causing resistance to motion and a damping effect.   Through a conventional linkage mechanism,  the damping effect is translated  to control of  the  engine  throttle.   As a result,  over-compensation  is generally reduced  and/or searching is inhibited.
Patent CA-1305826-C (CA)
Title: Process for the gas phase polymerisation of olefin monomers
Inventor: PALMQVIST ULF
IPC: C08F10/00
Filed: 1988-08-18
Granted: 1992-07-28
Abstract: ABSTRACT      A process for the gas phase polymerisation of olefin monomers, especially ethylene, using a supported catalyst and a promoter, is disclosed. The promoter is added to the catalyst before the polymerisation reaction, and the promoter utilised is a high-boiling halogenated hydrocarbon which is solid or liquid at ambient pressure and a temperature about 20-110°C and which is selected amoung (a) halogenated alkanes having 2-25 carbon atoms (b) halogenated cycloalkanes having 5-12 carbon atoms (c) halogenated alkene monomers having 2-25 car-bon atoms in monomeric or polymeric form, and (d) halogenated aryl methanes. The promoter can be used alone or in mixture with other promoter compounds. To achieve satisfactory activity of the polymerisation catalyst, a molar ratio between promoter and catalyst metal of from about 2:1 to about 20:1 suffices.
Patent CA-1312566-C (CA)
Title: Method for increasing the expression of polypeptides in recombinant cell culture
Inventor: LEVINSON ARTHUR D
IPC: C12Q1/04
Filed: 1988-09-12
Granted: 1993-01-12
Abstract: Viable cell proportions and total cell densities in recombinant eukaryotic cell cultures are increased by transfecting a eukaryotic host cell with nucleic acid encoding a desired polypeptide and with an oncogene. Transfectant cultures are screened thereafter for the expression of elevated quantities of the desired polypeptide as compared to expression from the parent host cell.
Patent CA-1301425-C (CA)
Inventor: LEWIS JOHN R JR
IPC: E01F9/018
Filed: 1988-09-15
Granted: 1992-05-26
Abstract: ABSTRACT OF THE DISCLOSURE A breakaway utility polo structure having a tubular base (II) anchored in the ground substantially at ground level and adapted to telescopically securethe bottom end portion of a polo (9) the base (II) having a circumferential shear groove (20) adjacent to its bottom end and the base being secured in the base byadhesive material (12) and by bolts (21) spaced above the shear groove (20) saidshear groove adapted to cause failure of the base when the pole is subjected to horizontal impact at a predetermined distance above ground level from a vehicle of predetermined weight moving horizontally at a predetermined minimum speed.
Patent CA-1321216-C (CA)
Title: Composite material and method
Inventor: CARLSON JAMES P
IPC: C04B14/18
Filed: 1988-10-21
Granted: 1993-08-10
Abstract: IMPROVED COMPOSITE MATERIAL AND METHOD                       ABSTRACT    An improved composite material is prepared by first uniformly mixing cement and perlite fines.  The perlite fines comprise particles that are less than 200 mesh.  The mixture of perlite fines and cement is then mixed with water, formed into a desired shaped, and allowed to dry. The dried material is useful in many applications where cement is used and has fireproofing and strength char-acteristics superior to ordinary concrete.     F/AERX:001/C4
Patent CA-1289685-C (CA)
Title: Telephone memory controller arrangement
Inventor: BROWN ANTHONY K D
IPC: H04M1/274
Filed: 1988-11-14
Granted: 1991-09-24
Abstract: ABSTRACT           Telephone numbers are stored and retrieved for automatic redialling by an arrangement that includes a memory map of bits. Each bit is uniquely associated with a respective redial key and a respective memory bank of the arrangement.  Each memory bank has a capacity sufficient to store a telephone number.  Actuation of a predefined one of the redial keys always results in redialling of the last telephone number stored.  If one of the other redial keys is actuated after telephone dialling a memory management unit of the arrangement assigns a first value to the bit uniquely associated with that key and an available memory bank.  Subsequent actuation of that other key then results in automatic redialling of the telephone number associated with that key.  In a further form of the invention, one of the other redial keys may be actuated during, rather than after, dialling of the telephone number.  In such case, subsequent actuation of that other key results in redialling of the telephone number that was stored prior to the previous actuation of that key.