baber/WOPTO huggingface dataset:
Patent CA-2043543-C (CA)
Title: Process for the conversion of fine superabsorbent polymers particles into larger particles
Inventor: WOODRUM GUY T
IPC: C08J3/12
Filed: 1991-05-30
Granted: 2001-07-24
Abstract: This invention is a method for converting fine particles of superabsorbent polymers into larger particles.      The invention is primarily directed to aqueous solution processes for preparing superabsorbent polymers. In such aqueous solution polymerization methods, the polymerization reaction product is a high viscosity gel which is dried and ground into particles. In this grinding step, a portion of the product is produced as undesired fine particles having poor absorbency and poor fabrication properties; i.e. they "gel block" and dust. According to the invention, fine superabsorbent polymer particles (up to about 3 parts) are mixed with the high viscosity reaction product gel (100 parts) containing about 20 parts by weight of superabsorbent polymer and water (5 parts per part of recycled particles) to form a mixture with improved rheological properties. The resulting mixture can be processed at a higher rate than a reaction product gel of equal solids content which results in a higher product yield and increased productivity.
Patent CA-2047815-C (CA)
Title: Dual septum polarization rotator
Inventor: WONG MON N
IPC: H01P1/165
Filed: 1991-07-24
Granted: 1995-07-04
Abstract: A dual septum polarization rotator which, in the presently preferred embodiment thereof, includes a square waveguide and a pair of stepped septums disposed in spaced, orthogonal relation to each other within opposite end portions of the square waveguide. A first one of the septums extends vertically between the top and bottom walls of the waveguide, parallel to the side walls of the waveguide, and the other/second one of the septums extends horizontally between the side walls of the waveguide,parallel to the top and bottom walls of the waveguide. The first septum, in cooperation with the waveguide, defines first and second input ports, and, the second septum, in cooperation with the waveguide, defines first and second output ports. The spacing between the first and second septums defines a central, open, nonseptum region within the waveguide.   In operation, the first septum functions to convert the polarization of a first excitation signal introduced into the first input port from a first polarization to a second polarization, and the second septum functions to convert the second polarization into a third polarization orthogonal to the first polarization, for output, via the first output port, as a first output signal. For example, if the first polarization is horizontal polarization, then the second polarization is circular polarization, and the third polarization is vertical polarization. The polarization rotator of the present invention is also capable of dual mode operation, whereby the polarization of a second excitation signal introduced into the second input port is simultaneously rotated for output, via the second output port, as a second ouput signal.
Patent CA-2048753-C (CA)
Title: Previous channel feature in a television receiver having multiple rf inputs
Inventor: KEENAN DOUGLAS MARVIN
IPC: H04N5/44
Filed: 1991-08-08
Granted: 1997-01-21
Abstract: In a television receiver including a plurality of RF input terminals, each of which having a respective scan list, and each scan list having an associated Last Tuned Channel register, and having a common Current Channel register, there is provided a Previous Channel and RF Input register. The Previous Channel and RF Input register and the Current Channel register both hold tuning information and RF input terminal information which allow retuning of a formerly tuned channel regardless of which RF input provides the signal for that channel. In one embodiment of the invention, the scan lists are linked providing an easy way to scan through the channels of all scan lists, and an easy return to a previously tuned channel from any RF input via operation of a Previous Channel (PC) key.
Patent CA-2052359-C (CA)
Title: Flame resistant electric cable
Inventor: BEAUCHAMP MARK
IPC: H01B3/02
Filed: 1991-09-27
Granted: 2001-05-29
Abstract: The disclosure herein describes a flame resistant electric cable which is capable of resisting flame temperatures in the neighbourhood of 1000°C for at least two hours; the cable comprises an electrical conductor including an electrical wire, an extruded elongate tubular member made of silicone surrounding the electrical wire, and an outer protective layer of braided inorganic material which surrounds the tubular member; an overall outer braided jacket surrounds the electrical conductor.
Patent CA-2060240-C (CA)
Title: Apparatus for handling elongated pieces of wood
Inventor: POMERLEAU JEAN-LOUIS
IPC: B27B31/06
Filed: 1992-01-29
Granted: 1994-12-13
Abstract: ABSTRACT OF THE DISCLOSURE              Elongated wood cants aligned in a given direction  are  displaced  laterally  from  a  first position to a second position without disturbing the alignment.   The apparatus comprises a first frame rotatable about a first axis,  and a second frame rotatable about a second axis parallel to but spaced apart from the first axis.   The apparatus further comprises first and second mechanisms for grasping the elongated  wood  cants.    The  first  mechanism  is pivotally mounted on the first frame about a third axis parallel  to the  first  axis,  and the second mechanism is pivotally mounted on the second frame about a fourth axis parallel to the second axis.  The third and fourth axes are spaced apart from the first and second axes, respectively, by a same distance. The two frames are simultaneously rotated about the first and second axes, respectively, and during this rotation the third and fourth axes occupy a same angular position with respect to the first and second axes,  respectively.   In operation,  the  first and second mechanisms grasp longitudinally spaced apart portions of the elongated cant in the first position and the two frames are rotated to displace laterally the wood cant to its second position where it is released still aligned in the given direction.  During rotation, the first and second mechanisms rotate on the first and second frames about the third and fourth axes, respectively.
Patent CA-2060870-C (CA)
Title: Glyphosate compositions and their use
Inventor: MITCHELL ROBERT WILLIAM
IPC: A01N57/20
Filed: 1992-02-07
Granted: 2002-07-30
Abstract: A composition of glyphosate comprising a glyphosate herbicide and a surface active component characterized in that the said surface active component is the combination of a sorbitan fatty acid ester and a surfactant chemically different from said sorbitan fatty acid ester.
Patent CA-2060961-C (CA)
Title: Stool collection and transport device
Inventor: SKIBA BARBARA T
IPC: A61B10/00
Filed: 1992-02-10
Granted: 1997-06-03
Abstract: A device for collection and transporting of stool samples. The device has a container with a lid having a spoon secured to the underside of the lid.  The spoon is angled at approximately 45° to facilitate sample collection, and has a generally straight cutting edge.  A secondary access aperture is provided in the lid for accessing the interior of the container once the lid has been applied.
Patent CA-2065361-C (CA)
Title: Apparatus for genetic transformation
Inventor: MCCABE DENNIS E
IPC: C12N15/82
Filed: 1991-06-21
Granted: 2002-04-23
Abstract: An apparatus for the particle mediated gen-etic transformation of organisms in vivo has two parts, a support unit and a hand unit (34). The hand unit (34) is of a convenient hand manipulable size so that it can be placed readily against the or-ganism the cells of which are to be transformed.      The hand unit (34) is connected to the suport unit by a flexible umbilical (56, 68) so that the hand unit (34) can be placed where desired. The apparatus is particularly well adapted for the convenient trans-formation of somatic cells of whole animals or hu-mans.
Patent CA-2070361-C (CA)
Title: Method for decreasing the speed of an alternating current motor
Inventor: ORGOVAN ANDREW J
IPC: H02P3/18
Filed: 1992-06-03
Granted: 1996-01-30
Abstract: The invention is carried out by providing an adjustable frequency power supply connected to an alternating current induction motor which is rotated at speeds in excess of 60 hertz.  A plurality of sequential frequency ranges are selected which, together, comprise a total frequency range from a maximum frequency range in excess of 60 hertz to 60 hertz which is applied to the motor.  For each frequency range, a maximum breakdown torque of the motor is determined.       When it is desired to decrease the speed of the motor, it is decelerated sequentially through each frequency range at a different deceleration rate for each range such that the maximum breakdown torque of the motor within each frequency range is not exceeded.  Each different deceleration rate for each frequency range is determined by selecting the minimum period of time, for each frequency range, during which the motor may be decelerated without exceeding the maximum breakdown torque of the motor within that frequency range.          Also, the deceleration rate for each frequency range may be selected by determining the deceleration rate of the motor at the highest frequency in each range which will not result in exceeding of the maximum breakdown torque of the motor.  The motor is then decelerated within each range at the deceleration rate of the highest frequency in the range.
Patent CA-2073376-C (CA)
Title: A device for welding structures, such as motor-vehicle bodies or parts thereof, constituted by loosely preassembled, pressed sheet-metal elements
Inventor: ALBORANTE GIANCARLO
IPC: B62D65/02
Filed: 1992-07-08
Granted: 1998-12-08
Abstract: In   a   device   for   welding   structures,   such   as motor-vehicle bodies  or parts  thereof  (for  example, sides),  constituted by loosely preassembled,  pressed sheet-metal  elements,  a  station  for  welding  the elements includes two rotary drums for rapidly changing the frames for positioning the elements to be welded in the  operative  position,  according  to  the  type  of structure to be welded.  The various positioning frames are rotated by rotors and guided on annular tracks on each rotary drum.  A sector of each annular track can be  separated and moved  along a  line transverse the conveyor line for the structures to be welded in order to bring a certain positioning frame into the operative position.
Patent CA-2076315-C (CA)
Title: Tire pitch sequencing for reduced tire tread noise
Inventor: WILLIAMS THOMAS A
IPC: B60C11/03
Filed: 1992-08-18
Granted: 1998-10-06
Abstract: A tire with reduced tire noise includes a tread having a plurality of base pitches placed about the circumference   of   the   tire   in   at   least   one circumferential section.  According to one aspect of the invention, the base pitches have three different pitch lengths  which  form  a pitch  sequence  around  the circumference  of  the  tire  in  each  circumferential section.  The base pitches are arranged such that the transitions between the base pitches with the smallest pitch lengths to the base pitches with the largest pitch lengths are between about 15% and 30% of the total number of transitions between base pitches in the pitch sequence.  Additionally, the smallest and largest base pitches each comprise between about 35% and 40% of the total number of base pitches around the circumference of the tire.  The above factors, when coupled with no more than three consecutive base pitches having the same pitch  length  being  arranged  adjacent  one  another, provide a tread with reduced tire noise.
Patent CA-2081715-C (CA)
Title: Pallet and pallet runner of corrugated cardboard
Inventor: SPEESE SCOTT
IPC: B65D19/00
Filed: 1992-10-29
Granted: 2004-08-17
Abstract: A pallet assembly made of a web of corrugated paperboard and providing a flat deck, a pair of parallel stringers for supporting the pallet on the ground, and flaps associated with the stringer sidewalls and folded to project interiorly of the stringer to strengthen the pallet and form openings for receiving the horizontal support bars of a forklift truck. The pallet assembly may have one or more additional stringers provided thereon. Additional flaps can also be provided to achieve additional strengthening effects. The stringer can be constructed as a separate element for attachment to a suitable deck or box to create a pallet-like construction.
Patent CA-2084967-C (CA)
Title: Method of producing sulphonic organosilicon compounds and corresponding aqueous solutions
Inventor: PANSTER PETER
IPC: B01J39/00
Filed: 1992-12-09
Granted: 1998-12-29
Abstract: A method of producing 0.01 to 70 wt. % aqueous solutions of sulfonated organosilicon compounds having the formula [(HO)3Si-R1-SO3-]X M x+                      (I) or oligomeric siloxane derivatives thereof, condensed via oxygen bridges.  The solution optionally also contains compounds of formula (III) e.g., Si(OH)4 or Al-(OH)3, or the like, or derivatives thereof condensed via oxygen bridges. The ratio of Si atoms of formula (I) to the sum of Si and/or Al atoms of formula (III) is 1:0 to 1:3, and the total concentration of compounds (I)+(III) is 0.01 to 70 wt. %. The starting material for the method is a polymeric di-, tri-, or tetrasulfane compound made up of units having the formula:     (see fig. I) wherein R1 has the same meaning as in formula (I), and y=2, 3 or 4.  The starting material of formula (IV) is suspended in water.  The suspension is mixed at 10° to 100° C with hydrogen peroxide and is then agitated at 30° to 150° C until a substantially clear solution is obtained.  The solution is cooled and optionally neutralized, freed from any remaining insoluble components, washed and then adjusted to the required concentration.
Patent CA-2088959-C (CA)
Title: Two-way mailer and method and apparatus for producing the same
Inventor: MEYERS RICHARD A
IPC: B31B50/62
Filed: 1993-02-05
Granted: 1999-03-16
Abstract: A mailer product is provided which is formed from a single sheet of paper having first, second and third sections. The first and second sections are separated by a first transverse line and the second and third sections are separated by a second transverse line.  The sheet of paper is foldable along the first and second transverse lines so that the first section overlies the second section and the third section overlies the first and second sections.  First adhesive material is provided on one of the first and the second sections of the sheet for securing the first and the second sections to one another when the sheet is folded along the first transverse line, thereby forming a return envelope.  Second adhesive material is located on at least one of the first, second and third sections for securing the third section to at least one of the first and the second sections when the sheet is folded along the second transverse line, thereby forming a closed mailer.  A method and apparatus is further provided for forming such a one-piece mailer.
Patent CA-2090687-C (CA)
Title: Reclining chair mechanism
Inventor: HENKE FRANZ JOSEF
IPC: A47C1/035
Filed: 1991-09-06
Granted: 1998-08-04
Abstract: An essentially self-balancing reclining chair (1) is provided. The invention may be adapted for use by any individual, regardless of size, shape or weight. The chair has a base (10) and two parallelogram linkages (ACDE) spaced apart from and facing each other in parallel vertical planes. Each parallelelogram linkage has upper, lower, front and rear linkage arms (AC, DE, AE, CD) pivotally connected to each other to define the parallelogram. A back support (2) is mounted behind and between the rear linkage arms, a seat support (4) is suspended below and between the lower linkage arms, and a leg support (6) is suspended below and between the front linkage arms. The mechanism is pivotally supported at a pivot point (B) above the base, the pivot point being at a position corresponding to the approximate centre of gravity of the chair and the person. The pivoting points between the back support and the seat support are aligned with the person's hip joints. The pivoting points between the seat support and the leg support are aligned with the person's knee joints. The pivoting points between the rear and upper linkage arms are at the centre of a quarter circle defined by the person's centre of gravity in moving from an upright to horizontal position.
Patent CA-2091409-C (CA)
Title: Injection molding torpedo with thermocouple bore
Inventor: BABIN DENIS L
IPC: B29C45/30
Filed: 1993-03-10
Granted: 2001-09-25
Abstract: Injection molding apparatus for hot tip gating wherein a torpedo is screwed into a threaded seat in the forward end of a nozzle. The torpedo has an elongated shaft with a pointed tip mounted centrally in an outer collar by a pair of spiral blades which impart a swirling motion to the melt flowing to the gate. The temperature of the melt in the gate varies according to a continuous thermodynamic cycle in the torpedo. A thermocouple bore extends radially inward through the outer collar and one of the spiral blades to a conductive inner portion of the central shaft of the torpedo. The thermocouple bore is positioned whereby a thermocouple element extends radially outward from it into an insulative air space between the forward end of the nozzle and the mold. The thermocouple element has a substantially 90 degree rearward bend a predetermined distance from its inner end. The bend abuts against a tapered portion of the inner surface of the well in which the nozzle is seated to securely retain the thermocouple element against the inner end of the thermocouple bore. This accurate location and reliable retention of the thermocouple element in place provides the accurate monitoring of the melt temperature necessary for its control throughout the thermodynamic cycle.
Patent CA-2093328-C (CA)
Inventor: GROSWITH CHARLES T III
IPC: B42B5/00
Filed: 1991-10-01
Granted: 1997-12-23
Abstract: Reliure constituée d'une paire de bandes allongées (40, 50), la première bande (40) supportant des griffes intégrées et articulées, situées à une certaine distance l'une de l'autre, et la deuxième (50), des tiges entaillées crantées correspondantes (51, 52, 53). Les bandes (54, 55) sont placées sur le bord de la pile de feuilles (7), l'une sur le dessus et l'autre en dessous. Sur la deuxième bande, les tiges d'extrémité (51, 52) sont disposées de manière que leur axe principal soit parallèle à l'axe longitudinal de la bande; elles sont renforcées en partie basse pour pouvoir résister à la rupture que pourraient provoquer les forces de cisaillement engendrées par le pliage du document relié. Les tiges intermédiaires (53), elles, sont disposées de manière que leur axe principal soit perpendiculaire à l'axe longitudinal de la bande, de manière à minimiser la largeur des petits fonds (60) du document relié et à maximiser la possibilité d'aplatissement du document ouvert sur le plateau d'un photocopieur.
Patent CA-2097179-C (CA)
Inventor: LAREAU ANDRE G
IPC: H04N5/335
Filed: 1991-11-25
Granted: 1996-06-04
Abstract: An electro-optical area array reconnaissance detector is disclosed which accomplishes forward motion compensation elec-tronically and without moving parts. The array is made of photo-sensitive cells arranged in rows and columns, the columns being organized into one or more column groups. Charge packets collected in the cells representing scene information are transferred down the columns at the same rate as the image motion in the plane of the array. In a side oblique reconnaissance scenario, the columns may be organized into 16 column groups, each column group having its own charge transfer rate corresponding to the image motion rate in that column group.
Patent CA-2098979-C (CA)
Title: Battery refill system
Inventor: CAMPAU DANIEL N
IPC: H01M50/609
Filed: 1993-06-22
Granted: 2004-09-28
Abstract: Disclosed is a battery refill system for filling and maintaining a plurality of interconnected battery cells at a predetermined level with liquid provided by an external liquid supply means, the system also including a plurality of refill valves, each valve being associated with a single battery cell, and at least one main supply valve for controlling the supply of the liquid to the battery cells and their respective refill valves. The system further comprises conduit means communicating between the main supply valve and the refill valves, the conduit means being constructed of a polymeric material which, over a temperature range of between about -20°F and 200°F, is substantially free of plasticizer bleed, has a minimum bend radius of about 2.50 inches, and has a burst strength of up to about 40 psi.
Patent CA-2101085-C (CA)
Inventor: ITO KAZUYUKI
IPC: A61M60/827
Filed: 1993-08-18
Granted: 2003-07-15
Abstract: A novel cardiac assist blood pump is disclosed. The blood pump comprises a pump chamber, a pressurizing chamber provided adjacent to the pump chamber, a rotor chamber provided adjacent to the pressurizing chamber and an impel-ler positioned in the pump chamber, said pump being charac-terized in that the rotation shaft of the impeller means is provided with a first seal member having a skirt portion which is made of an elastomeric material and extends down-ward to cover the clearance between the rotation shaft and the first rotation shaft hole provided between the pump chamber and the pressurizing chamber and a second seal member similar to the first one which covers the clearance between the rotation shaft and the second rotation shaft hole provided between the pressurizing chamber and the rotor chamber; and the pressurizing liquid is forced into the pressurizing chamber. The pressurizing liquid penetrates into the pump chamber through the clearance between the rotation shaft and the rotation shaft hole and lifts the skirt portion of the first seal member and the friction between the seal member and the bottom of the pump chamber is prevented. Also the pressurizing liquid presses the skirt portion of the second seal member and thus prevents leakage of the pressurizing liquid into the rotor chamber.
Patent CA-2105493-C (CA)
Title: Method and apparatus for assessing and restoring solderability
Inventor: TENCH D MORGAN
IPC: H05K3/34
Filed: 1993-09-03
Granted: 2004-04-20
Abstract: A sequential electrochemical reduction method and apparatus are provided for assessing and restoring solderability of electronic component leads. The method detects and quantifies the presence of metallic oxides that are detrimental to solderability by sequential electrochemical reduction in contact with an electrolyte in an inert atmosphere. A cathode having a high hydrogen overvoltage is placed in contact with the electrolyte. A solderable portion of the component to be tested is placed in contact with the cathode and the electrolyte. An inert counter electrode and a reference electrode are also placed in contact with the electrolyte. A current is passed between the cathode and inert electrode, and the voltage and current are measured as a function of time during reduction of metallic oxides on the solderable portions of the component. The measurements of voltage, current, time, and charge density may be compared with baseline data from specimens having known oxide compositions that correlate with degradation of solderability.
Patent CA-2106137-C (CA)
Inventor: LEDERMAN BARRY P
IPC: A61K9/12
Filed: 1993-09-14
Granted: 1996-10-22
Abstract: The present invention embraces an aerosol antiperspirant composition which comprises a suspension of about 5 to 15% high efficacy aluminum salt in powder form in about 15 to 35% volatile silicone and about 40 to 80% liquefied hydrocarbon propellant with about 0.7 to 1.5% hydrophobic colloidal silica suspending agent and about 0.15 to 0.35% hydrophilic colloidal silica suspending agent.  The composition of the present invention has superior antiperspirant efficacy and avoids the use of materials which have an adverse effect on efficacy, namely oil soluble emollient esters such as isopropyl myristate and polar agents such as ethanol.