baber/WOPTO huggingface dataset:
Patent CA-2008281-A1 (CA)
Title: Multiplexed hydraulic control systems
Inventor: WARDLE JOHN W
IPC: F02C7/232
Filed: 1990-01-22
Abstract: ABSTRACT      A time multiplexed hydraulic control system in which a multiple section dog valve is multiplexed among a plurality of channels.  An electrical actuator on the dog valve controls pilot means.  The pilot means is associated with a plurality of followers, one for each channel, and each follower controls the flow rate through an associated output port.  Multiplexing means in the dog valve sequentially supplies fluid to the pilot means for sequentially positioning then locking the respective followers.  Thus, each channel has continuous hydraulic flow based on the position of its dedicated follower, with the followers being repositioned on a multiplexed basis in associated time slots.
Patent CA-2009123-A1 (CA)
Inventor: RODRIGUEZ DOMINGO
IPC: C10L1/32
Filed: 1990-02-01
Abstract: Hydrocarbon  in water  emulsions  based  on  heavy crudes or bitumens having high viscosities are stabilized by  a  water  soluble  stabilizing  additive  of  Al+++, especially in an amount of 30 ppm to 1000 ppm, based on total emulsion volume; the thus stabilized emulsions may be stored for relatively long periods or during trans-port, without breakdown of the emulsion.
Patent CA-2009569-A1 (CA)
Inventor: HAMER JOHANNES A
IPC: B01D11/04
Filed: 1990-02-08
Abstract: Draw-off device for use in a vacuum distillation column comprising a layer of horizontal gutters (17) provide with heat-insulating means in the form of a second wall (25) arranged in the gutters (17) to reduce condensation of vapour passing along the outer walls of the gutters (17).
Patent CA-2010725-A1 (CA)
Title: Construction element
Inventor: STEINER ALFRED
IPC: E04B2/08
Filed: 1990-02-22
Abstract: ABSTRACT OF THE DISCLOSURE      Construction elements each consist of a central section and two external sections, with the central section having, in addition to flat top and bottom surfaces, two parallel side walls and four, shorter side walls.  Pairs of the angled side walls would intersect at right angles were they to extend to the two external sections.  The two external sections are cylindrical in shapes and of a height less than the height of the central section, with the remaining portion of the central section having a cylindrical wall that may be thought of as a continuation of the external section.  By providing the external sections with a height less than the central section, it is possible to line up the elements adjacent to each other with the external sections of adjacent construction elements overlapping in order to form a temporary curbstone or traffic control structure.
Patent CA-2018987-A1 (CA)
Title: Process for the production of a molded body comprising pressed particles and a phenolic resin
Inventor: HEMELS MARTIN H A
IPC: C08L97/02
Filed: 1990-06-14
Abstract: Abstract of the Disclosure In the process for the production of a molded body having a pressed core of solid inert particles which are coated with a thermoset phenolic resin, phenolic compounds  on a basis  of bisphenol,  in particular a bis(hydroxyphenyl)alkane, and at least one compound which produces formaldehyde, and also a  catalyst  and  optionally  further  additives customarily employed in the preparation of phenolic resins are mixed together with the inert particles The mixture of particles obtained, preferably after precompressing and preforming, is pressed to form the molded body.   During pressing under the action of heat formaldehyde is set free and the phenolic resin is completely cross-linked.
Patent CA-2019127-A1 (CA)
Title: Contact-type keyboard
Inventor: BONMASSARI GIANPAOLO
IPC: H01H13/52
Filed: 1990-06-15
Abstract: ABSTRACT OF THE DISCLOSURE      The contact-type keyboard comprises a plurality of keys which are movable from a rest position to an operative position and which each have a sleeve capable of being accommodated in a tube provided on the upper part of a dome portion of elastomeric material. Each dome portion projects from a mat and, below the tube, comprises an internal circular ring provided with a movable conductive portion for short-circuiting a corresponding fixed conductor of a printed circuit which in turn is carried by a stop plate of insulating material.   Each sleeve is of such a length as to pass internally by way of an upper opening through the dome portion, to engage a through hole in the plate to project downwardly beyond the plate and comprises a seat capable of accommodating a corresponding pin of a support frame structure so as to guide the respective key from the rest position to the operative position and vice-versa. The support frame structure is positioned below the stop plate at a predetermined spacing such that it does not interfere with the end of the sleeve when the respective key is in the operative position. The key is in turn restrained to the plate by means of a lateral appendix which is freely accommodated by a seat in the plate and provided with a hook portion which is retained by the plate.
Patent CA-2019700-A1 (CA)
Inventor: HANNA KHALIL
IPC: A61F2/14
Filed: 1990-06-22
Abstract: The lens according to the invention, comprising an optic zone (3) and an anchoring zone (4), is characterised in that the anchoring zone (4) has a bevelled shape, so that this zone can be inserted under a flap (22) released from the cornea (2) of the receiving eyeball by means of a divergent, tapering incision (14) in this cornea (2); the keratotome according to the invention is capable of effecting an incision of this type. 
<??>This provides for a more effective, less traumatising and more aesthetic anchoring of the lens (1) in the cornea (2). 
<IMAGE>
Patent CA-2019734-A1 (CA)
Inventor: HANNINEN ROBERT
IPC: C09J7/38
Filed: 1990-06-25
Abstract: P.F. 1072 A B S T R A C T     Repulpable tapes, their composition and the process of making the same, which retain adhesion and tack over a wide range of humidity and temperature, are provided.  The improved composition comprises the addition of 10 to 50 parts by weight of a partially to fully hydrogenated rosin and at least 1 part by weight of polyethylene glycol.
Patent CA-2019775-A1 (CA)
Title: Static trip device comprising an earth protection desensitization system
Inventor: TRIPODI PAUL
IPC: H02H3/16
Filed: 1990-06-26
Abstract: ABSTRACT            STATIC TRIP DEVICE COMPRISING AN EARTH PROTECTION DESENSITIZATION SYSTEM            The differential tripping threshold (Is) of the trip device is a polynomial function of an order greater than or equal to two of the highest phase current (Ip) flowing in the power system protected by the circuit breaker comprising the trip device.            Refer to figure 6.
Patent CA-2019872-A1 (CA)
Inventor: PREDA LUIGI
IPC: C12Q1/37
Filed: 1990-06-26
Abstract: To determine the biological activity of protein S in a sample of human plasma, the suitably diluted sample is added to a substrate formed from plasma deficient in protein S, in which protein C is activated.  The functionality of protein S is evaluated by a coagulometric test using bovine thromboplastin with added calcium as the phospholipid source.
Patent CA-2025605-A1 (CA)
Title: Method of purifying human serum albumin
Inventor: OHTANI WATARU
IPC: C07K14/435
Filed: 1990-09-18
Abstract: A method of purifying human serum albumin which comprises subjecting human serum albumin-containing solution to heat treatment of about 50-70°C for 1-5 hours in the presence of acetyltryptophan and/or an organic carboxylic acid with 6-12 carbon atoms or a salt thereof.
Patent CA-2026916-A1 (CA)
Inventor: ZEROD RICHARD D
IPC: H03G1/00
Filed: 1990-10-04
Abstract: An audio system having a main chassis including an audio preamplifier and a remote chassis including a power amplifier has a clipping level detector circuit in the remote chassis for detecting the onset of clipping by the power amplifier and has a gain control element in the main chassis for controlling the gain of the preamplifier.  Thus, clipping distortion is eliminated without introduction of other distortion and while preserving the spectral balance of the audio signal.
Patent CA-2029189-A1 (CA)
IPC: H04L9/18
Filed: 1990-11-02
Abstract: A ciphertext to plaintext communications system including a communications channel, a generator, a data device, an encryptor, a black to red communicator (BRC) device, a decryptor, and a comparator.   The generator generates a first data-bit sequence which has a predetermined bit pattern.   The encryptor encrypts the first data-bit sequence as an encrypted-bit sequence.          The encrypted-bit sequence is transmitted over the communications channel and received by the BRC device.          The data device generates the second data-bit sequence, which may include data from diagnostic equipment or any other source of information originating in the channel carrying the encrypted-bit sequence.   The BRC device modifies the encrypted-bit sequence using the second data-bit sequence.  The decryptor decrypts the modified-encrypted-bit sequence as a third data-bit sequence.          The third data-bit sequence is compared with the predetermined bit pattern with the comparator, which thereby generates the second data-bit sequence.
Patent CA-2031679-A1 (CA)
Title: Non-aqueous dispersions
Inventor: RAO MADHUKAR
IPC: C08F283/02
Filed: 1990-12-06
Abstract: This invention relates to high solids alkyds, non-aqueous disper-sions, and coating compositions containing those alkyds and non-aqueous dispersions, having non-volatile materials contents greater than about 75% NVM, with very law volatile organic contents of less than 305 g/1, which exhibit excellent stability, viscosity and tack-free and dry times when formulated as air dry coating compositions.
Patent CA-2034105-A1 (CA)
Title: Rotatable slot nozzle air bar
Inventor: ZAGAR STEVEN J
IPC: B05C11/06
Filed: 1991-01-14
Abstract: ABSTRACT OF THE DISCLOSURE     A rotatable slot nozzle air bar utilizing a rotatable baffle assembly to directionally discharge air through an attached slot.  The direction of discharge of the air is adjustable by a rotatable baffle assembly rotatably mounted within a surrounding outer housing.  The rotatable slot nozzle air bar provides the ability to adjust the direction of impingement air on a web by controlling the rotation of the rotatable baffle assembly in the outer housing without changing out the air bar.  The rotatable slot nozzle air bar provides the ability to profile the drying rate within the zone by directing the impingement air from the slot nozzle.  The rotatable slot nozzle assembly is rotated to change direction of impingement air, thus allowing for operation using direct impingement, induced diffusional flow or a varying combination of either.     3062b
Patent CA-2034957-A1 (CA)
Title: Vehicle
Inventor: ANDREW ROBERT J
IPC: B62D7/14
Filed: 1991-01-25
Abstract: A vehicle which can alternatively be steered with two or four wheels, the vehicle comprising a chassis having first (11,12) and second (13,14) pairs of ground engaging wheels, the wheels (11,13; 12,14) of each pair being mounted at opposite sides of the chassis (15) and the second pair of wheels (13,14) being lockable in a position such that simple steering is effected solely by the first pair of wheels (11,12), the first pair of wheels (11,12) being movable to effect steering by a first fluid actuating means (17) to which fluid is fed from a steering valve means (23), and the second pair of wheels (13,14) being movable by a second fluid actuating means (19) to which fluid is fed via a steering mode selector valve means (24) from the steering valve means (23), the steering mode selector valve means (24) having a first operating condition (P1) when fluid from the steering valve means (23) is not fed to the second fluid actuating means (19) whereby simple steering is effected solely by the first pair of wheels ( 11, 12) and a second operating condition (P2) wherein fluid from the steering valve means (23) is fed to the second fluid actuating means (19) whereby compound steering is effected by the first and second pairs of wheels (11,12,13,14) the first (P1) or second (P2) operating condition of the steering mode selector valve means (24) being retained until the steering mode selector valve means (24) receives a positive signal from a control means (30) to change the operating condition of the steering mode selector valve means (24) so that the steering mode of the vehicle (10) last selected i.e. two or four wheel steering, is remembered by the steering mode selector valve means (24). <IMAGE>
Patent CA-2035295-A1 (CA)
Title: Controlled pore composite polytetrafluoroethylene article and method therefor
Inventor: HAGEN DONALD F
IPC: G01N30/88
Filed: 1991-01-30
Abstract: ABSTRACT OF THE DISCLOSURE           A composite article having controlled void volume and mean pore size comprises: (a)  polytetrafluoroethylene (PTFE) fibril matrix, and (b)  insoluble, non-swellable sorptive particles enmeshed in said matrix, the ratio of non-swellable sorptive particles to PTFE is in the range of 40:1 to 1:4 by weight, the composite article having a porosity in the range of 30 to 80 percent void volume and a mean pore size in the range of 0.3 to 5 micrometers, preferably with at least 90 percent of pores having a size less than 3.6 micrometers.     The article is prepared by incorporating lubricant in the precursor admixture in an amount sufficient to provide a soft dough-like mass and exceed the lubricant sorptive capacity of the particles by at least 3 weight percent and up to an amount at which the mass loses its integrity.
Patent CA-2038117-A1 (CA)
Inventor: ALI MAHFUZA B
IPC: C08F2/50
Filed: 1991-03-12
Abstract: Docket Number 44591CAN2A               ABSTRACT           The present invention provides controllably curable photoiniferter containing adhesive compositions which are suitable for the mounting of microelectronic devices such as flip chips onto transparent wiring boards, a method of making the adhesive compositions, and a method of using the adhesive compositions in order to bond microelectronic devices to transparent wiring boards by intermittent exposure of the adhesive composition to a radiant energy source.  The adhesive compositions can be cured in a stepwise fashion by intermittent controlled exposure to a source of radiation thus providing exactly the amount of cure and hardening desired.
Patent CA-2040251-A1 (CA)
Inventor: ANDERSON PAUL H
IPC: B01J13/00
Filed: 1991-04-11
Abstract: Stable mixed emulsion/dispersions of a liquid polysulfide and an oxidative curative therefor are provided.  The liquid polysulfide is emulsified in water using a surfactant with a hydrophile/lipophile balance of between 18 and 20.  Particulates of an oxidative curative are separately dispersed with surfactants in water.  The emulsions and dispersion are then blended together.
Patent CA-2040749-A1 (CA)
Title: Rake sorter
Inventor: ROOS EDWIN HARM
IPC: B07B13/00
Filed: 1991-04-18
Abstract: ABSTRACT   The rake sorter is used to sort particles according to size or shape. It comprises a hollow cylinder rotatable about its axis and arranged with its axis inclined to the horizontal such that particulate material fed into the upper end of the cylindermoves along the bottom of the cylinder towards its lower end as the cylinder rotates. Raking teeth project inwardly from the wall of the cylinder, the teeth being configured to rake through the moving particles and to capture selected particles which are distinguished from other particles by their size or shape for subsequent collection apart from the other particles.
Patent CA-2045063-A1 (CA)
Inventor: SAREEN BIMAL K
IPC: G06F13/00
Filed: 1991-06-20
Abstract: An interleaved output queue is used as a high performance interface on a system bus for transferring information from a CPU to main memory.  The queue is loaded on its input side with information that is bound for transmission from the CPU's cache to main memory.  On its output side, the queue is unloaded by dual sets of unload circuitry, each of which accesses the information stored in either the odd or even queue entry addresses.  Other select circuitry will alternate the transmission of information out of the two sets of unload circuitry to main memory.  Each set of unload circuitry receives error information back from main memory during the time that the other unload circuitry is issuing a transaction.  Transactions issued from the queue can proceed in an immediately successive sequence without waiting for the processing of error information from the immediately preceding transaction yet the queue can still recover form errors during high performance operation.
Patent CA-2045431-A1 (CA)
Title: Parallel-processing device
Inventor: TAKASHIMA TOKUHEI
IPC: G06F1/18
Filed: 1991-06-25
Abstract: ABSTRACT OF THE DISCLOSURE    Disclosed is a parallel-processing device using a pile of bus disks each having an integrated circuit crossbar switch at its center and a plurality of conductor lines radiating from the center crossbar switch, thus providing communication lines of  equal  length to make a required electrical connection between selected processing units. This  eliminates  the  necessity  of  adjusting  different transmission  times  in  communication  between  selected processing units,  and accordingly the time involved for processing is shortened.  A pile of numerous disks permit interconnection of numerous processing units therearound through the shortest possible conductor lines, thus making the processing units insensitive to interference by noise signals.
Patent CA-2046315-A1 (CA)
Title: Bornyl and isobornyl esters of carboxylic acids of condensed tetrahydroquinoxalines
Inventor: CHUPAKHIN OLEG N
IPC: A61K31/495
Filed: 1990-12-03
Abstract: BORNYL AND ISOBORNYL ESTERS OF CARBOXYLIC ACIDS OF      CONDENSED TETRAHYDROQUINOXALINES              Abstract Bornyl and isobornyl esters of carboxylic acids of condensed tetrahydroquinoxalines having the general formula   where R1 is CH3 or C2H5    is     or    wherein R2 is   or   The proposed compounds are active against viruses and can therefore be used in medicine.
Patent CA-2046509-A1 (CA)
Title: Hydrophilic urethane prepolymer composition
Inventor: SANO TAKASHI
IPC: C08F18/10
Filed: 1991-07-09
Abstract: ABSTRACT OF THE DISCLOSURE   A urethane  prepolymer  composition  useful  as sealant  is disclosed.   The composition comprises a reaction product of an organic polyisocyanate and a polyether  polyol  mixture  at  an NCO/OH  equivalent ratio from 1.6 to 2.5.  The polyether polyol mixture contains  (a)  from  75  to  95  % by weight  of  the mixture of a polyoxyalkylenediol having an average MW from 400 to 1,000 and are oxyethlene unit content greater than 50 % by weight, and (b) the balance of the  mixture  of  a  polyoxyalkylenetriol  having  an average MW from 5,000 to 10,000 and an oxyethylene unit  content  greater  than  50  %  by  weight.   An equivalent composition is produced by reacting the polyoxyalkylenediol and polyoxyalkylenetriol  with the  organic  polyisocyanate separately and  mixing together after the reaction.
Patent CA-2047692-A1 (CA)
Title: Cathode active materials, methods of making same and electrochemical cells incorporating the same
Inventor: DAHN JEFFERY R
IPC: H01M10/36
Filed: 1990-01-09
Abstract: ABSTRACT Cathode-active materials  for  electrochemical cells are prepared by reacting gamma phase MnO2 with Li. The  molar  ratio  of  Li  to  MnO2  is  about  0. 33 to about 0.43.
Patent CA-2048266-A1 (CA)
Inventor: STEMMER GOTTFRIED
IPC: G03D15/10
Filed: 1991-08-01
Abstract: Abstract An apparatus for carrying out a method for inserting a slide (3) into a slide frame (10) is provided with a pusher (12) reciprocably guided in the plane (21) of the slide frame (10), a guideway (24) for the slide (3) and a knife (4) for cutting off the slide (3). For providing an apparatus of said kind of a simpler design and a faster operation, the guiding path (24) for the slide (3) extends in the plane (21) of the frame (10). The knife (4) is arranged above the plane (21) of the frame (10). By a flap (17) pivotable around a horizontal axis (19) the slide (3) can be moved completely into the plane (21) of the frame (10) after cutting (Fig. 3).
Patent CA-2049077-A1 (CA)
Title: 2,3-dihydrobenzofurylmethyl esters, their preparation and pesticides containing them
Inventor: MUELLER STEFAN
IPC: C07D307/79
Filed: 1991-08-13
Abstract: O.Z. 0050/41848 Abstract of the Disclosure: 2,3-Dihydrobenzofurylmethyl esters of the general formula I                        I   where R1 is hydrogen, C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkynyl or cyano, R2 and R3 independently of one another are each hydrogen or C1-C4-alkyl and n is 0 or 1, processes for their preparation and pesticides containing them.
Patent CA-2053805-A1 (CA)
Title: Underwater vacuum cleaner
Inventor: SARGENT RONALD J
IPC: E04H4/16
Filed: 1991-10-21
Abstract: ABSTRACT OF THE INVENTION    An underwater vacuum cleaner for cleaning debris from the bottom of a pool has a collection chamber formed with an inlet, an exhaust port and an actuator port.   Operatively associated with the actuator port is a reciprocable push button which moves between a seated position wherein the actuator port is closed, and an unseated position wherein the actuator port is opened.  With the push button in the seated position, an air lock is created in the collection chamber when the chamber is submerged  into the pool.   Once the collection chamber is submerged, movement of the push button into its unseated position breaks the air lock and allows water,  and  debris  carried  by  the  water,  to  enter  the collection chamber.   The collection chamber is emptied of water for subsequent use, and the collected debris is held trapped in the chamber, by withdrawing the collection chamber from  the  pool.    Specifically,  upon  withdrawal  of  the collection chamber from the pool, the push button is pulled into an unseated position by the water draining from the collection chamber through the filtered exhaust port.     PATENT:  10950.1
Patent CA-2056181-A1 (CA)
Inventor: NOEL THIERRY
IPC: F16L15/00
Filed: 1991-11-26
Abstract: The assembly arrangement according to the invention concerns the  tubes  which  are  used  primarily  in  oil  industry installations.  It permits the sealing assembly of a male end to  a  female  end,   each  provided with  frustoconical screwthreads.  The end region of the male component comprises a convex frustoconical sealing surface for providing a metal-metal  sealing connection  with  a  surface  of  the  female component, the internal edge of which is connected to the concave frustoconical abutment region and the external edge of which is connected to the external surface of the end region, having a portion parallel to the generatrix which is tangential  to  the  bottom  of  the threads  of  the  male screwthread.  The diameter of the external edge is such that the prolongation of the generatrix which is tangential to the thread bottoms of the male screwthread passes beyond said external edge.  And, use for the assembly of tubes with male ends by means of female sleeves.
Patent CA-2058513-A1 (CA)
Inventor: KONDO SHIGEKI
IPC: H01L21/336
Filed: 1992-01-08
Abstract: An SOI-type thin film transistor having:  a transparent insulating substrate; a first gate electrode, a first gate insulating film, a semiconductor layer, a second gate electrode and a second gate insulating film which are respectively formed on the transparent insulating substrate, wherein the width of the first gate electrode and that of the second gate electrode are different from each other and as well as the thickness of the first gate insulating film and that of the second gate insulating film are different from each other.