baber/WOPTO huggingface dataset:
Patent CA-1276685-C (CA)
Title: Radio transceiver including an antenna switching circuit capable of changing reception sensitivity
Inventor: UEDA HIDEKI
IPC: C08L43/04
Filed: 1987-04-08
Granted: 1990-11-20
Abstract: ABSTRACT         A radio transceiver includes an antenna, a transmitter, a receiver and an antenna switching circuit for selectively coupl-ing the transmitter and the receiver to the antenna in response to a transmit mode and a receive mode.  The antenna switching circuit includes a first diode coupled between the antenna and the transmitter, a second diode and an inductor connected in series between a point of fixed potential and the junction of the antenna and the first diode.  The receiver is coupled to the junction of the second diode and the inductor.  According to the invention, the resistances of the first and second diodes are changed in response to another receive mode to reduce the level of a received signal supplied to the receiver.  The invention reduces inter-ference and improves temperature stability.
Patent CA-1292379-C (CA)
Title: Color wheel assembly for lighting equipment
Inventor: BORNHORST JAMES M
IPC: F21V9/40
Filed: 1987-04-28
Granted: 1991-11-26
Abstract: COLOR WHEEL ASSEMBLY FOR LIGHTING EQUIPMENT            ABSTRACT OF THE DISCLOSURE    A lighting fixture includes a source for producing a beam of light and pair of color wheels. each of the color wheels has a plurality of dichroic filters mounted on the periphery of the wheel with the filters positioned contiguous to each other.  The light beam is directed to a focal point.  Each of the color wheels can be rotated to place the peripheral dichroic filters in position to intercept the beam. One of the color wheels is equipped with long wave pass dichroic filters while the other color wheel is equipped with short wave pass dichroic filters.  By aligning various combinations of these filters, a large number of different colors with different saturations can be produced.  The cutoff wavelengths for the dichroic filters are selected to be different at the long and short wavelengths of the filter set, such that there is produced a perceived uniform graduation of colors across the spectrum.  Each of the dichroic filters mounted on the color wheels is in a shape of a trapezoid and is mounted adjacent other filters, such that there is no blanking of light or leakage of light in the process of changing from one filter to the next.
Patent CA-1297297-C (CA)
Title: Method of and apparatus for manufacturing float glass
Inventor: SATO YASUO
IPC: C03B18/10
Filed: 1987-07-02
Granted: 1992-03-17
Abstract: ABSTRACT   Difference in height is provided between a first surface of a molten metal bath at the upstream side in a vessel and a second surface thereof by means of a linear induction motor.  A glass ribbon supplied to the first surface is formed to have a predetermined thickness while it is moved from the first surface to the second surface.
Patent CA-1321979-C (CA)
Title: Lead oxide-coated electrode for use in electrolysis and process for producing the same
Inventor: UEDA MINORU
IPC: C25B11/04
Filed: 1987-08-19
Granted: 1993-09-07
Abstract: ABSTRACT OF THE DISCLOSURE   A lead oxide-coated electrode for use in electro-lysis is disclosed, which comprises a primary layer comprising platinum and/or palladium oxide, an intermediate layer comprising .alpha.-PbO2, and a coating layer comprising .beta.-PbO2 successively coated on a substrate comprising a corrosion resistant metal.  The electrode has a strong and durable lead oxide coating firmly bonded to the substrate, does not suffer from passivation, resistance increase, etc. and can be used stably for a long time at high current density.  A process for producing the electrode is also disclosed.
Patent CA-1279199-C (CA)
Title: Variable area exhaust nozzle for a gas turbine engine
Inventor: DENNING RALPH M
IPC: F02C9/20
Filed: 1987-08-27
Granted: 1991-01-22
Abstract: ABSTRACT OF DISCLOSURE            A VARIABLE AREA EXHAUST NOZZLE FOR A GAS TURBINE ENGINE          A nozzle for a gas turbine engine having a first fixed petal 44 and a second movable petal 46 which is pivotally mounted at a point intermediate its leading edge  46(a)  and  its  trailing  edge  46(b). Actuation means 48 are provided to move the nozzle between  a  first  and  a second  position.   In  the petals  first position,  its  leading edge  46(a)  is positioned forward of an slightly radially inward of the trailing edge 50 of the exhaust duct 52, such that a small ejector gap 54 is provided therebetween and the trailing edge 46(b) approaches the trailing edge 44(b)  of the fixed petal, such that the gap therebetween defines the exit area of the nozzle 36. In the petals second position  (shown dotted),  its lending edge 46(a) is moved radially inwards of its trailing edge 46(a) such that the exit area of the nozzle is defined by the area between the trailing edge 50 of the exhaust duct 52 on the second petal side and the trailing edge of the first petal 44(b). An ejector gap 56 is also provided on the fixed petal side and acts to aid the flow of air over the outside surfaces of the petals.
Patent CA-1320398-C (CA)
Title: Processes for thermal transfer ink donor films
Inventor: DUFF JAMES M
IPC: B41M5/26
Filed: 1987-09-02
Granted: 1993-07-20
Abstract: ABSTRACT OF THE DISCLOSURE         An emulsion process for the preparation of thermal ink donor films which comprises (1) the addition of wax or soluble polymer components to a warm hydrocarbon solution; (2) adding thereto first additives that are soluble in the solution; (3) forming an emulsion thereof by adding the formed solution to an alcohol or a polar solvent, which may also contain dissolved second additives, grinding the resulting emulsion with a suitable pigment; (4) coating the product obtained on a supporting substrate; and (5) thereafter heating to enable evaporation of the hydrocarbon.
Patent CA-1329442-C (CA)
Inventor: TOWLE IAN D H
IPC: C08G61/12
Filed: 1987-09-17
Granted: 1994-05-10
Abstract: ABSTRACT            PREPARATION OF POLY(ARYLENE ETHER KETONES) Friedel Crafts preparation of arylene ether ketone polymers with an exceptionally high degree of isomeric purity and freedom from by-products can be achieved by adding to the Lewis acid reaction system a protic controlling agent selected from ROX, water, RCOOX, RSO3X, and ROY, wherein R is organic, X is hydrogen or metal, and Y is metal.  Contrary to conventional expec-tation, the protic agent does not significantly acylate or alkylate the polymer, and agents of relatively low molecular weight, e.g. benzoic acid, can be selected to produce dispersions of the resulting polymers.  The controlling agent also apparently acts to maintain the polymer in solution until a desired molecular weight is reached.
Patent CA-1311359-C (CA)
Title: Method and apparatus for homogenizing flat glass
Inventor: PECORARO GEORGE A
IPC: C03B18/02
Filed: 1987-12-15
Granted: 1992-12-15
Abstract: ABSTRACT         Stirring of glass of high optical quality is effected by initiating forming of the glass, such as by the float process, at relatively high temperatures immediately after the glass has been stirred.  Preferably, during and/or following the stirring operation contact between the molten glass and ceramic refractories is minimized.          This is preferably accomplished by providing a layer of molten metal (e.g., tin) on the bottom of the stirring chamber.
Patent CA-1311434-C (CA)
Inventor: SATO ZENJI
IPC: C07D313/00
Filed: 1988-03-24
Granted: 1992-12-15
Abstract: ABSTRACT OF THE DISCLOSURE         The present invention provides Rhizoxin in pure iso-lated form having the following characteristics: External appearance                    White powder Molecular formula:               C35H47NO9 Molecular weight:                      625 Melting point:                         131-135°C Specific rotation:   [.alpha.]24 + 201° (c=0.8, MeOH) D          Ultraviolet absorption spectrum:       Shown in Fig. 1.          Infrared absorption spectrum:          Shown in Fig. 2, in which chloroform is used as the solvent. Nuclear magnetic resonance spectrum:   1H and 13C nuclear magnetic resonance spectra are shown in Fig. 3.          Mass spectrum:            Shown in Fig. 4.          Solubility in solvents:                Easily soluble in benzene, chloroform, acetone, alco-hol, etc.; sparingly sol-uble in water, n-hexane. Elementary analysis:                        C     H    N Found (%)            66.94  7.78 2.04 Calculated (%)       67.18  7.57 2.23 useful for palliative relief and temporary remission of tumor on human beings and other mammals.
Patent CA-1315873-C (CA)
Title: Interpolator for compressed video data
Inventor: HARNEY KEVIN
IPC: H04N5/14
Filed: 1988-03-31
Granted: 1993-04-06
Abstract: INTERPOLATOR FOR COMPRESSED VIDEO DATA       ABSTRACT OF THE DISCLOSURE A simplified-in-structure vertical interpolator for expanding video data down-loaded from image memory to an odd-line line storage memory and an even-line line storage memory is followed in cascade by a horizontal interpolator.  The horizontal interpolator calculates the difference between adjoining pixels in horizontally compressed video data from the vertical interpolator, divides the difference by the horizontal compression ratio and accumulates the divided differences during line trace intervals to recover de-compressed video data.
Patent CA-1309825-C (CA)
Inventor: LOPEZ SERAPIO E
IPC: E04B5/00
Filed: 1988-04-25
Granted: 1992-11-10
Abstract: .     ABSTRACT     A wind resistant inverted built-up roof construction is provided comprising a roof deck 9 a waterproof membrane overlying said roof deck, a plurality of closed cell foam plastic insulating material overlying said membrane, and a plurality of paving blocks overlying and supported by said insulating members in edge-to-edge relationship.  A plurality of resilient members is secured relative to said membrane and extend past the insulating blocks.  A plurality of hold-down plates respectively overlie a plurality of the paving blocks, and each plate is aligned with and secured to one of said resilient members in order resiliently to hold said paving blocks in place.     34,537-F
Patent CA-1318337-C (CA)
Title: Latch and lock housings, handles and mounting brackets
Inventor: WEINERMAN LEE S
IPC: E05B13/10
Filed: 1988-05-09
Granted: 1993-05-25
Abstract: LATCH AND LOCK HOUSINGS, HANDLES AND MOUNTING BRACKETS                    Abstract Flush mountable pulls, latches and locks for industrial cabinets,  tool carts,  electrical equipment enclosures  and the like utilize a versatile housing together with other components of novel form mounted on the housing to provide a variety of de-sired features.  Pull handles as well as latch and lock operating handles of a wide variety of types can be connected to the hous-ing, as can a wide variety of latch bolt mechanisms that are con-figured to engage various types of strikers or keeper formations.          The resulting arrangement provides sturdy pull,  latch and lock assemblies that employ a small number of parts that can be as-sembled, installed and serviced with ease.
Patent CA-1298793-C (CA)
Title: Active noise control
Inventor: DEKKER NICOLAAS M J
IPC: A61F11/14
Filed: 1988-05-12
Granted: 1992-04-14
Abstract: ABSTRACT OF THE DISCLOSURE                         Active Noise control An active noise control system for reducing the amount of noise propagated along a duct comprises a microphone mounted in the wall of the duct for detecting the noise, and an active antiphase noise source, such as a loudspeaker, which is mounted substantially in the centre of the cross-section of the duct.    A control circuit coupled between the microphone and the antiphase noise source includes an integrator having a specific transfer function, which improves the loop gain of the microphone/source loop at low frequencies, and secures stability by altering the phase.
Patent CA-1337490-C (CA)
Title: Process for the production of aminomalonic acid dinitrile salts
Inventor: METTLER HANSPETER
IPC: C07C/
Filed: 1988-06-02
Granted: 1995-10-31
Abstract: A process is disclosed for the production of aminomalonic acid dinitrile salts from malonic acid dinitrile by the hydrogenation of its oximation product.
Patent CA-1311411-C (CA)
Inventor: COLOMBO GIORDANO
IPC: B23D25/10
Filed: 1988-06-21
Granted: 1992-12-15
Abstract: Abstract Guillotine shearing machine, especially for cutting con-tinuous metal bands wherein, by connection to rods each supported by a pair of crancks, each of two longitudinal blades translates parallel to itself and to the opposite blade, on equal circular trajectories, the upper blade be-ing inclined in relation to the lower horizontal blade so that, when blades meet near the cutting plane and become superimposed, said baldes progressively cut the band from one edge through to the other edge in a way that greatly reduces cutting stress, blade speed at each cutting cy-cle being regulated according to the speed at which the band moves forward so that, in the area of contact, blade and band speeds coincide and pieces of band can be cut to any length desired.
Patent CA-1314675-C (CA)
Title: Extrusion process and single, dual or multiple-worm extruder
Inventor: DOLLHOPF RUEDIGER
IPC: B29C48/74
Filed: 1988-08-22
Granted: 1993-03-23
Abstract: ABSTRACT OF THE DISCLOSURE:           In the case of the extruder, the thread of the worm, or that of the worms, is partly left-handed and partly right-handed,  so that one part of the material to be processed is conveyed in direction A,  while the other part is conveyed in the opposite direction B.  The process is a degasifying-extrusion-process and the extruder is a degasifying extruder:   the following are provided:   a reverse-degasifying arrangement at the end of the worm, or worms, if the material to be processed is carried away from this end,  and/or a reverse-degasifying arrangement at the location between the threaded sections of the worm, or worms, whence the material to be processed is carried away in opposite directions B and A.  According to the invention: continuous operation is possible, no dead areas and break-away edges are formed, the reverse-degasifying arrangement is easily sealed off against any ingress of oxygen, and products sensitive to heat and oxidation, such as polyamide-66, may also be produced, without damage, in continuous operation; example:  synthetic-fibre extrusion-spinning.
Patent CA-1328205-C (CA)
Title: Orthopaedic support device
Inventor: BATES NORMAN
IPC: A61F5/37
Filed: 1988-09-02
Granted: 1994-04-05
Abstract: ABSTRACT    An orthopaedic support device comprises a resilient pad having a length and a width, covered by a woven or non-woven fabric having a pair of ends which are adapted to be joined together, whereby the support device may be wrapped around a body at a desired location, and the ends of the device fastened together to support the body at that location, characterized in that the device is provided with a lengthwise extending first strip of hook and pile closure material,  and there provided,  in association with the device,  a complementary second strip of hook and pile closure material, whereby the ends of the device may be releasably fastened together with a complementary strip of closure material.
Patent CA-1306936-C (CA)
Inventor: VOGELESANG LAURENS B
IPC: B64C1/00
Filed: 1988-10-13
Granted: 1992-09-01
Abstract: ABSTRACT OF THE INVENTION     LAMINATE OF METAL SHEETS AND CONTINUOUS  GLASS  FILAMENTS-REINFORCED SYNTHETIC MATERIAL Laminate displaying  improved  blunt  notch  behaviour,  so that  it  is suitable for use as a constructional material in aviation and cosmo-nautics.  It comprises an intermediate layer of synthetic   material reinforced by continuous glass filaments having a modulus of elas-ticity of at least 80 GPa. The glass filaments contain at least 58-69% b.w. of SIO2,  18-29% b.w. of AL2O3 and MGO. Preferably, they have a tenacity of at least 4 GPa, and an elongation at break of at least 4%. The synthetic material may be an amorphous thermoplastic resin having a  Tg >  140°C  such  as,  e.g.,  polarylates,  poly(ether)sulfones, polyetherimides or poly-p-phenylene ethers, or a semi- or para- crys-talline resin  having a crystalline melting  point > 170°C,  such  as poly-phenylene sulfides, polyetherketones or liquid crystal polymers.
Patent CA-1315967-C (CA)
Inventor: DONOVAN DAVID A
IPC: B23B41/12
Filed: 1988-10-31
Granted: 1993-04-13
Abstract: Abstract of the Disclosure Stitch-machining the walls of a cylindrical blind cavity of a workpiece, the cavity being deep and narrow with respect to the axis of the cavity, is carried out by: (a) supporting a tubular housing for axial movement throughout substantially the axial extent of the cavity interior and in close-fitting tolerance to the walls of the cavity, the tubular housing having a free end; (b) rotationally driving a spindle (10,000-40,000. rpm) in the tubular housing for conjoint axial movement with the tubular housing, the spindle extending beyond the housing end for carrying a radially adjustable cutting tool; (c) inserting the tubular housing together with the rotationally driven spindle into the cavity (at lineal speeds of 400-800 inches/minute) with a cutting tool radially positioned for rough boring of the cavity walls, while guiding and steering the tubular housing and spindle to accurately concentrically position the cutting tool with respect to the cavity axis; (d) substantially immediately upon the execution of rough boring, withdrawing the tubular housing together with the rotationally driven spindle from the cavity with the cutting tool repositioned for finish boring of the cavity wall during withdrawal; and (e) upon substantial execution of finish boring and withdrawal of the tubular housing and spindle into a fixed housing positioned closely adjacent the face of the workpiece, moving said workpiece relatively transversely with respect to the axis of the spindle for carrying out milling while radially adjusting the cutting tool for milling of the face, the tubular housing being guided and steered within the fixed housing to attain close milling tolerances. 2267L.
Patent CA-1319110-C (CA)
Title: Pharmaceutical composition comprising exifone and water-soluble polymer
Inventor: UEDA YOSHIO
IPC: A61K31/12
Filed: 1988-11-10
Granted: 1993-06-15
Abstract: ABSTRACT           There   is   described   a   pharmaceutical composition  comprising exifone  and a water-soluble polymer.  This composition is useful as a cerebral metabolic  improving  agent  and  is effective  in the  treatment  of  senile  dementia,  cerebrovascular dementia and the like.   This composition overcomes the  drawback  that  exifone  is  sparingly  soluble in water.   It is highly bioavailable.   A process for preparing the composition by converting exifone and a water soluble polymer to a solid dispersion, or mixing exifone with a water soluble polymer.
Patent CA-1299090-C (CA)
Title: Heat and mass transfer rates by liquid spray impingement
Inventor: ALBERS WALTER F
IPC: F28F13/02
Filed: 1988-12-08
Granted: 1992-04-21
Abstract: ABSTRACT    On a surface in which on which heat is exchanged with a gas media, the heat transfer  coefficient  can be enhanced by directing a spray at the surface.  The spray droplets can disrupt  the  stagnant  air  layer adjacent  to  the  exchange  surface,  enhance  the increase the area for heat and mass transfer and  can aid  in  carrying  vapor  from  the  gas media to the exchange surface.
Patent CA-1307569-C (CA)
Title: Sensing apparatus for monitoring a structure subject to wear
Inventor: FISCHER WERNER
IPC: F16D66/02
Filed: 1988-12-16
Granted: 1992-09-15
Abstract: ABSTRACT     There is disclosed a sensing apparatus for monitoring a structure subject to wear,  and providing an automatic indication upon the thickness of such structure being worn to a predetermined, minimum operable value.   Such apparatus includes a sensing device that is insertable into a recess in one surface of structure to a depth corresponding to the predetermined minimum thickness: and a coaxial electrical cable including an inner conductor, a heat resistant covering, and an outer metallic tubular sheath that is preferably corrugated.    One end of the coaxial  cable  is  shaped ad a  loop and is positioned within the sensing device in the vicinity of the bottom face  thereof,  while  the other  end  of  the  cable  is connected to a contact assembly to which is connected a measuring  circuit  for  automatically  ascertaining  the condition  of  the  cable  components within the  sensing device.
Patent CA-1316301-C (CA)
Inventor: CHUANG JO-YU
IPC: F16L15/00
Filed: 1989-01-10
Granted: 1993-04-20
Abstract: ELLIPTICAL THREAD DESIGN     ABSTRACT OF THE DISCLOSURE            A screw structure (10) is provided for male and female threads (14) having at least one thread (14) extending helically along a cylindrical support (12) member in spaced thread turns. A root portion (22) extends between adjacent thread (14) turns and has a curvature defined by a portion of an ellipse (24) for providing improved stress reduction during periods of severe loading.
Patent CA-1335680-C (CA)
Title: Flameproofed polyethylene terephthalate moulding compounds
Inventor: JOSWIG THOMAS
IPC: C08K5/53
Filed: 1989-01-11
Granted: 1995-05-23
Abstract: The flameproofed polyethylene terephthalate moulding compounds according to the invention, which contain polyalkylphosphonates and reinforcing agents, may be used for the production of moulded articles, fibres and films.
Patent CA-1312884-C (CA)
Inventor: SCHMIDT ROBERT J
IPC: C07C5/27
Filed: 1989-02-10
Granted: 1993-01-19
Abstract: "PROCESS FOR ISOMERIZATION OF                            ABSTRACT             A hydrogen recycle-free process for the isomerization of C4-C6 paraffins with good stability and high conversion that uses a highly active catalyst to isomerize the feed in the presence of very little hydrogen, which is selected so that the effluent hydrogen to hydrocarbon mole ratios is 0.05:1 or less.  Continued operation at low hydrogen concentrations in the reaction is made possible by the remarkably low coking tendency of the catalyst, especially during periods of temporary sulfur deactivation.  The low hydrogen to hydrocarbon mole ratio feature simplifies the process and makes it cheaper to operate by eliminating facilities for the recovery and recycle of hydrogen.
Patent CA-1328350-C (CA)
Inventor: SIMS GREGORY A
IPC: E04B1/72
Filed: 1989-02-21
Granted: 1994-04-12
Abstract: ABSTRACT OF THE DISCLOSURE      An   integrated   pesticide   applicating   system utilizes lengths of small diameter closed end flexible tubing  with  periodically  spaced  perforations  having open  ends  terminating  at  junction  boxes  which  are serviced on a periodic basis by certified pest control technicians  utilizing  expanding  chemicals  that  are administered  in  measured  quantities  to  provide  a residual pest control block in concealed areas of a building.  Externally mounted junction boxes provide a pest  control  method  in  which  the  chemicals  can  be applied  without  the  necessity  of  access  to  the interior of the building by the servicing technician.  Tubing perforations are preferably conically shaped.
Patent CA-1317095-C (CA)
Inventor: WONG DOROTHY Y Y
IPC: B60N3/04
Filed: 1989-03-03
Granted: 1993-05-04
Abstract: ABSTRACT OF THE DISCLOSURE           A clip is disclosed for securing a mat to a carpet wherein the clip has a main portion joined to a spike.  The spike is inserted into and underlies the carpet such that the main portion is exposed.  One-half of a loop and hook type fastener is secured to the exposed side of the main portion of the clip and the corresponding second half of the fastener is secured to the second surface of the mat to permit the mat to be secured to the main portion of the clip.
Patent CA-1336071-C (CA)
Inventor: KAROBATH MANFRED
IPC: A61L15/16
Filed: 1989-03-29
Granted: 1995-06-27
Abstract: N-methyl-N-(1-phenyl-2-propyl)-2-propinylamine in racemic or optically active form and the pharmaceutically acceptable acid addition salts thereof are useful for systemic transdermal administration.