baber/WOPTO huggingface dataset:
Patent CA-2015466-A1 (CA)
Inventor: AILEO JACKSON A
IPC: A42B3/16
Filed: 1990-04-26
Abstract: A resilient annular earseal for sealing the region between an earcup shell and a wearer's head is formed with an aperture for receiving the wearer's ear and has an outer peripheral portion projecting a predetermined first distance toward the wearer's head and an inner peripheral portion projecting a predetermined second distance toward the wear-er's head that is appreciably greater than the first dis-tance.  Since the inner peripheral portion contacts the wearer's head along a strip that is closer to the ear, and hence more predictable in its three-dimensional contour, it forms an effective seal around the entire periphery of the ear
Patent CA-2016171-A1 (CA)
Inventor: HEYWOOD DEREK W
IPC: D06M101/16
Filed: 1990-05-07
Abstract: ABSTRACT     In   a  process  for  the  treatment  of woollen  textile material,  which may be in the form of yarn or fabric,  to reduce  shrinkage  and felting and improve  resistance  to abrasion,  by depositing a polyamide-epichlorhydrin  resin thereon, the material is given a subsequent treatment with an  aqueous polyurethane dispersion. The polyurethane thus deposited  adds  to the improvement in properties  brought about  by the polyamide-epichlorhydrin resin. The  woollen textile  material  to be treated, especially when  in  the form  of  yarn,  may  comprise  wool  admixed  with  other (particularly synthetic) fibre, such as fibres of viscose, polyesters and especially polyamides, such as nylon.
Patent CA-2017650-A1 (CA)
Title: Procede de separation de deux isomeres, son application a la purification du phenyl-1 bromo-2 ethane
IPC: B01J27/128
Filed: 1990-05-28
Abstract: La présente invention concerne la séparation de deux isomères caractérisé  (i)  en ce qu'on condense sélectivement l'un d'eux avec un produit portant au moins un hydrogène arylique et en présence d'un catalyseur de FRIEDEL et CRAFTS, (ii) puis qu'on sépare le produit de condensation obtenu d'avec l'autre isomère.  Dans un mélange de phényl-1 bromo-2 éthane et de phényl-1 bromo-1 éthane,  seul ce dernier se condense avec du xylène en présence de chlorure ferrique pour donner du phénylxylyléthane.  La température de réaction est   plus basse que pour les procédés de séparation connus  minimisant ainsi la décomposition des isomères.
Patent CA-2018869-A1 (CA)
Title: Mesh anode and mesh separator for use with steel-reinforced concrete
Inventor: KOVATCH WILLIAM A
IPC: C23F13/00
Filed: 1990-06-13
Abstract: ABSTRACT               MESH ANODE AND MESH SEPARATOR FOR USE    WITH STEEL-REINFORCED CONCRETE     An insulating separator along with an anode for cathodically-protected steel-reinforced concrete is embedded in an ion-conductive overlay on a concrete structure.  The insulating separator is at least one sheet of polymer mesh.  The anode is at least one sheet of highly expanded valve metal in mesh form.  Both the polymer mesh and the anode mesh comprise mesh having a pattern of voids defined by a network of strands connected at a multiplicity of nodes.  The surface of the valve metal mesh carries an electrochemically active coating.          The insulating polymer mesh separator overlays the concrete structure surface and separates the anode mesh from such surface.  Both the polymer       mesh and the anode mesh are embedded in the ion-conductive overlay.  At least one current distribution member can be fastened to the valve metal mesh.
Patent CA-2021918-A1 (CA)
Title: Thermoplastic barrier articles containing at least two barrier resins
Inventor: MEHRA VINODKUMAR
IPC: C08J5/18
Filed: 1990-07-25
Abstract: ABSTRACT         A laminar article with good barrier properties to oxygenated and hydrocarbon compounds prepared by blending a polyolefin with about 1 to 39 of a physical mixture of at least two polymeric materials selected from the group consisting of polyamides, polyesters, polycarbonates, polyvinyl alcohol, copolymers of vinyl alcohol and melt blends of a polyamide and a vinyl alcohol component, using an alkylcarboxyl-substituted polyolefin as a compatibilizer .
Patent CA-2023555-A1 (CA)
Title: Narrow molecular weight distribution block polymers
Inventor: WALTHER BRIAN W
IPC: C08F297/04
Filed: 1990-08-17
Abstract: ABSTRACT       Extremely narrow molecular weight distribution block copolymers comprising isoprene are prepared utilizing multifunctional lithium based initiators and an initial diene block forming amount of butadiene.
Patent CA-2026220-A1 (CA)
Inventor: MARSH MICHAEL J C
IPC: F42D1/055
Filed: 1990-09-26
Abstract: The  invention  relates  to  a  blasting  apparatus  for activating a plurality of electrical detonators after predetermined  time  delays. The  blasting  apparatus includes a plurality of remote electrical delay devices. Each device is linked to a detonator, and is arranged to be  serially programmed with a  timing  signal,  which originates  from the central  control  unit  and which determines  the  time delay.   A bidirectional  signal harness, having ends which terminate at I/O ports in the control unit, serially links the delay devices to the control unit.  In the event of a fault of discontinuity occurring in the harness prior to programming of the delay devices,  the discontinuity is detected and the direction of programming along the bidirectional harness is reversed so that those delay devices which, due to the break, cannot be programmed in the initial direction, are programmed with timing signals travelling along the signal line in the opposite direction.   The invention extends  to  a  method  of  activating  a  plurality  of electrical detonators, as well as to the individual delay devices forming part of the blasting apparatus.
Patent CA-2027214-A1 (CA)
Inventor: ZUEHLKE ARTHUR G
IPC: B66C13/48
Filed: 1990-10-10
Abstract: This disclosure relates to a control system for operation of a liftcrane having mechanical subsystems (10) powered by an engine (80) and connected thereto by a closed loop hydraulic system with one or more individual closed hydraulic system with one or more individual closed hydraulic loops. The liftcrane includes controls (12) for outputting signals for operation of the mechanical subsystems and a programmable controller (20) connected and responsive to the controls and connected to the mechanical subsystems. The programmable controller is capable of running a routine for controlling the mechanical subsystems (10). A first set of sensors (30) is operable to sense the pressure in the closed loop hydraulic system at each of the mechanical subsystems in a first set of mechanical subsystems and provide an output to the programmable controller indicative of the hydraulic pressure sensed. A second set of sensors (30) is operable to sense the position or speed of each of the mechanical subsystems is a second set of mechanical subsystems and provide an output to the programmable controller indicative of the position sensed.
Patent CA-2028400-A1 (CA)
Title: Dishwasher
Inventor: RIGBY RALPH A
IPC: A47L15/00
Filed: 1990-10-24
Abstract: ABSTRACT The present invention discloses a sink mounted dishwasher having a closure mechanism (41, 140) in the drain (15) of the sink (2).  A hydraulic control system (Fig. 6) for such a dishwasher is also disclosed together with a hydraulically operated liquid detergent dispenser (47, Fig 7).  The preferred form of hydraulic fluid is liquid rinse aid.  Two forms of spray arm (28, 128) are also disclosed, each with an structure (20) which enables the spray arm to be removably and rotatably mounted within the sink.
Patent CA-2029108-A1 (CA)
Inventor: IKEDA KOJI
IPC: H04L25/06
Filed: 1990-11-01
Abstract: A threshold value control system for discriminating an input signal received by a receiver circuit, comprising a mode setting unit for determining a mode setting signal corresponding to a connection pattern of the receiver circuit; a variable threshold value generating unit for generating a variable threshold value which varies depending on the variation of the level of said input signal; a constant threshold value generating unit for generating at least one constant threshold value by which the level of the input signal can be discriminated even when its level cannot be distinguished by the variable threshold value; a threshold comparing unit for comparing the variable threshold value and each of the at least one constant threshold value to output a comparison result; a switching unit for passing only one of the variable threshold values and the at least one constant threshold value as an input digital signal discriminating threshold value, based on the mode setting signal output from the mode setting unit and the comparison result output from the threshold comparing unit, the input digital signal discriminating threshold value being sufficient to discriminate the digital level of the input signal; and a comparing unit for comparing the level of the input signal and the input digital signal discriminating threshold value to output a discriminated result, whereby bit errors or synchronization deviation can be prevented even when there is a superimposition of frame signals or noises.
Patent CA-2029310-A1 (CA)
Inventor: MERRISON JOHN C
IPC: H02P3/18
Filed: 1990-11-05
Abstract: An electric motor has first, second and third stator windings supplied by a source of alternating voltage having three phases A, B and C, respectively. A separate thyristor switch assembly couples each stator winding to an alternating voltage phase when said switch means is rendered conductive by a trigger signal. When the speed of the motor is above a first predefined level, the thyristor switch assemblies are triggered, in response to the polarity of the voltage between phases A and B being opposed to the polarity of back emf voltage induced across the third winding, to apply current through said first and second stator windings. However, when the speed of the motor is below the first predefined level, the thyristor switch assemblies are triggered, in response to the polarity of the voltage between phases B and C being opposed to the polarity of back emf voltage induced across the third winding, to apply current through said second and third stator windings. Subsequently when the speed of the motor further decreases below a second predefined level, current is applied through said second and third stator windings during every cycle of the voltage between phases B and C.
Patent CA-2030453-A1 (CA)
IPC: C21D9/56
Filed: 1990-11-21
Abstract: Strip elongation in a continuous annealing furnace is controlled by passing the strip around a first driven roll, thence through a portion of the furnace, thence around a second driven roll, wherein the amount by which the peripheral speed of the second roll exceeds the peripheral speed of the first roll is controlled in order to control strip elongation.  Means are provided for sensing actual strip elongation, thus eliminating the need to measure the strip load.
Patent CA-2031970-A1 (CA)
Title: Process for producing foams with the aid of fluoroalkanes
Inventor: BEHME KLAUS-JUERGEN
IPC: C08J9/14
Filed: 1990-12-11
Abstract: Abstract of the disclosure Process for producing foams with the aid of fluoroalkanes The invention relates to a process for producing foams based on polyisocyanates by reacting polyisocyanates, compounds having at least two hydrogen atoms reactive towards  isocyanate  groups,  blowing  agents  and,  if appropriate, further additives.  In this process, a blowing agent is used which is composed to the extent of at least 10 mol % of one or more fluoroalkanes of the formula I                            CaHbFc where a = 4-6, b = 1-12 and c = 2-13.
Patent CA-2032882-A1 (CA)
Title: Vacuum sewer arrangement
Inventor: LINDROOS GUNNAR
IPC: E03D11/00
Filed: 1990-12-20
Abstract: A vacuum sewer arrangement comprises a bowl connected to a sewer pipe provided with means for establishing, in the sewer pipe, a vacuum sufficient for obtaining efficient sewage transport. There is a normally-closed sewer valve connecting the bowl to the sewer pipe and a control device for controlling operation of the sewer valve to allow discharge of sewage from the bowl to the sewer pipe. There is also an air inlet duct for letting air into the sewer pipe separately from the bowl. For controlling flow of air through the air inlet duct into the sewer pipe, when the sewer pipe is under proper vacuum for effective sewage transport, there is an air inlet valve with means operating it in response to pressure variations in the sewer pipe. Such pressure variations occur when the sewage discharged from the bowl has passed the point where the air inlet duct is connected to the sewer pipe.      This ensures that the air inlet valve operates accurately and securely.
Patent CA-2033165-A1 (CA)
Title: Sewage disposal method employing circulating filter media and an apparatus carrying out the same
Inventor: IWAI ISAMU
IPC: C02F3/10
Filed: 1990-05-23
Abstract: A method and apparatus for purifying contaminated water using a filtering medium, which is directed to preventing effectively clogging of the filtering medium. This object can be accomplished by forming water streams inside circulation passages divided and defined in a purification tank by water stream forming means, circulating the filtering medium inside the purification tank by the water streams and peeling off the sludge from the filtering medium by utilizing the orderly circulation without diffusing the sludge inside the purification tank as a whole.
Patent CA-2033885-A1 (CA)
Title: Non-flammable aerosol paint compositions
Inventor: SMRT THOMAS J
IPC: C09D5/02
Filed: 1991-01-09
Abstract: ABSTRACT An aerosol composition adapted for providing a continuous film on a substrate upon discharge from a suitable containment means, said composition comprising (a) about 10 to about 30 wt. percent of at least one propellant, (b) about 20 to about 80 wt. percent of water, (c) about 2 to about 25 wt. percent of a water-insoluble film-forming polymer, and (d) about 0.1 to about 10 wt. percent of at least one surfactant, said composition being substantially non- flammable upon discharge from the containment means.
Patent CA-2033903-A1 (CA)
Title: Low gloss thermoplastic molding compositions
Inventor: JALBERT RONALD L
IPC: C08L63/06
Filed: 1991-01-10
Abstract: Thermoplastic molding compositions having an inherent matte or low gloss surface finish comprise a polymer blend of a polycarbonate and an emulsion grafted ABS polymer, and a low gloss enhancing amount of a poly(epoxide).
Patent CA-2035521-A1 (CA)
Title: Wood dorr jamb system
Inventor: CRITCH DOUGLAS G
IPC: E06B1/06
Filed: 1991-02-01
Abstract: ABSTRACT OF THE DISCLOSURE           There is disclosed a pre-manufactured wood door frame system and method of constructing same, comprising two door jambs, a header, door stops and door casings allowing for installation at the job site of a generally rectangular shaped door frame which is designed for relatively easy installation.  The door frame system is  designed to have no surface contact with the face of the roughed-in door opening studs thus eliminating the tendency of the installed door frame to twist, bend and crack as a result of the twisting  and  warping  of  the  studs.    Further  features  are incorporated  in  the  system  to  reduce  the  tendency  of  newly constructed buildings to have warped,  twisted or cracked door frames and improperly functioning doors.  Similar problems of door frame cracking and shifting due to settlement of newly constructed buildings is also thereby significantly reduced.
Patent CA-2036527-A1 (CA)
Title: Redundant sensing edge for a door
Inventor: MILLER NORMAN K
IPC: E05F13/00
Filed: 1991-02-18
Abstract: Abstract of the Disclosure A redundant sensing edge for a door causes a closing door to open by actuating a device upon force being applied to the sensing edge.  The sensing edge includes a flexible air-impervious elongate outer sheath which is compressible upon application of external pressure.  A substantially sealed air-impervious first chamber is positioned within the elongate sheath.  A pressure-sensitive switch is in fluid communication with the first chamber for sensing pressure change within the chamber, such that upon application of external pressure to the sheath, the pressure switch is actuated.  A second chamber is positioned within the sheath proximate the first chamber.  A second switch is positioned within the second chamber and includes a first generally cylindrical layer of resiliently compressible material, a first generally cylindrical layer of electrically conductive material, a generally cylindrical layer of non-conductive material, a second generally cylindrical layer of electrically conductive material, a second generally cylindrical layer of resiliently compressible material and a generally cylindrical support member layered in the recited order.  Upon application of external pressure to the sheath, a portion of at least one of the first and second layers of electrically conductive material deflects into an opening in the layer of non-conductive material and makes electrical contact between the first and second layers of electrically conductive material to thereby actuate the device.
Patent CA-2036577-A1 (CA)
Title: Auto-focus system for video camera
Inventor: HIROTA KATSUAKI
IPC: G02B7/28
Filed: 1991-02-19
Abstract: A focus detection signal is generated from the video signal produced by a video camera by deriving higher frequency components of that video signal, detecting when those higher frequency components exceed a minimum threshold level, sensing when the video signal exceeds a maximum threshold, and integrating those higher frequency components which exceed the minimum threshold, except during an interval when the video signal exceeds the maximum threshold, thereby producing the focus detection signal.
Patent CA-2039278-A1 (CA)
Title: Motion adaptive luminance signal and color signal separation filter
Inventor: YAMAGUCHI NORIYUKI
IPC: H04N9/78
Filed: 1991-03-27
Abstract: The present  invention relates to a filter for separating luminance and color signals from a composite color television signal  in  which  the  frequency  of  the  color  signal  is multiplexed over  the  high-frequency  region of  the  luminance signal.  When  a    picture  is  detected  with  respect  to  its motion  under  frame    correlatlon  and  if  that  motion  is relatively  small,   the  separation  of  luminance  and  color signals is performed based  on the interframe correlation. If the motion is  relatively large,  the separation of  luminance and   color   signals   is   made   based   on   the   interfield correlation.  The  luminance and color signal  separation based on the interfield correlation is   attained from a correlation with  signals  in  a  field spaced    forwardly  away  from  the subject field by one field. This is accomplished by selecting a calculation having the highest   correlation in calculations for  an  objective  sample  point  and  a  plurality  of  sample points  located  about  the  objective    sample  point.  Such  a correlation  is  determined  by  checking  the  correlation  of image signals  in the  set of sample points which are spaced apart  from one another by one  frame and located around the objective sample point.
Patent CA-2041739-A1 (CA)
Title: Acoustic alert sensor
Inventor: JENSEN RANDY M
IPC: G01S11/14
Filed: 1991-05-02
Abstract: ABSTRACT OF THE DISCLOSURE        An acoustic detector for detecting acoustic signals produced by vehicles.  The detector comprises an acoustic sensor which senses an acoustic signal which is provided to a zero crossing detector.  The zero crossing detector provides a digital signal representing the frequency of the incoming acoustic signal.  The zero crossing detector's providing this digital signal to a first counter, the first counter's counting each zero crossing, and the first counter's reaching a predetermined count of zero crossings in a predetermined time for a predetermined number of times results in an acoustic alert provided to a secondary device which is put on alert of a vehicle in it vicinity.  This secondary device may be a mine.
Patent CA-2049206-A1 (CA)
Title: Utility meter interface circuit
Inventor: MCCLELLAND JOSEPH H
IPC: H04Q9/00
Filed: 1991-08-14
Abstract: UTILITY METER INTERFACE CIRCUIT     ABSTRACT OF THE DISCLOSURE    An interface to facilitate storing in an electric utility meter transponder, water usage data so that when remotely interrogated, access can be had to both electric and water usage data.  A pulse indicative of water usage sets a magnetic latching relay in the interface circuit which causes a transponder supply voltage to be switched to two interface circuit timers. The first timer generates a first delay, after which the electric meter transponder is pulsed to register water usage.  After a second, longer delay, the second timer resets the magnetic latching relay to thereby place the interface circuit in condition for receiving another water usage signal.
Patent CA-2049225-A1 (CA)
Inventor: ADACHI NOBUYUKI
IPC: H03K23/66
Filed: 1991-08-15
Abstract: A   programmable   frequency   dividing   apparatus comprises  a  programmable  frequency  dividing  network which has a plurality of cascade-connected programmable frequency  dividing  staged.    Each  stage  divides  a frequency of an input clock pulse by two or three based on  a  logic  level  of  a preset  input  signal  supplied thereto for changing a division ratio.   Circuits are provided  for  incrementing  a  division  ratio  of  the programmable  frequency  dividing  network  by  +1.  The circuit for incrementing comprises gates for detecting whether or not each of  the  outputs  of  programmable frequency dividing stages of a programmable frequency dividing network,  subsequent to a second stage of the programmable  frequency  dividing  network,  assumes  a predetermined pattern.   The circuit also sets a preset input  signal  applied  to  a  first  stage  of  the programmable  frequency  dividing  network  to  a  change-over  level  for  causing  the  first  stage  of  the programmable frequency dividing network to divide the frequency  of  the  clock  pulse  by  three   when  an instruction signal for incrementing a division ration by +1 is inputted to the gates.
Patent CA-2050057-A1 (CA)
Title: Interferant eliminating biosensors
Inventor: HELLER ADAM
IPC: C12Q1/00
Filed: 1991-08-27
Abstract: ABSTRACT OF THE DISCLOSURE    Interferant eliminating analyte sensors and sensing process prevent erroneous assays.  Glucose electrodes were coated with an oxidizing enzyme (peroxidase) which allows hydrogen peroxide to selectively oxidize ascorbate, urate, bilirubin, and acetaminophenol in the presence of glucose.   Hydrogen peroxide may be added to the assayed solution or generated in situ.  The oxidizing enzyme was prevented from causing undesired reduction currents at the glucose electrode by preventing contact of the oxidizing enzyme with the glucose electrode, or by increasing the applied voltage.
Patent CA-2050379-A1 (CA)
Title: Suspension polymerization of vinyl chloride
Inventor: AMANO TADASHI
IPC: C08F2/20
Filed: 1991-08-30
Abstract: ABSTRACT OF THE DISCLOSURE An improvement is proposed in the process of suspension polymerizatiopn of vinyl chloride monomer in an aqueous poly-merization medium, by which a resin product of high quality rela-tive to the contents of foamy resin and fish-eyes can be produced in a high efficiency with little deposition of polymer scale on the reac-tor walls. The improvment comprises heating and keeping the surfaces of the polymerization reactor and accessory equipment coming into contact with the gaseous phase above the polymeriza-tion mixture at a temperature of 55 °C or higher during a period starting from a moment when the temperature of the polymeriza-tion mixture under temperature elevation up to the polymeriza-tion temperature is still 45 °C or lower to a moment when conver-sion of the monomer into polymer is at least 10% so that foaming on the polymerization mixture can be greatly reduced.