baber/WOPTO huggingface dataset:
Patent CA-2016508-C (CA)
Inventor: WALL DAVID F
IPC: G06F17/50
Filed: 1990-05-10
Granted: 1998-11-10
Abstract: A logic method for accessing rules in a logic circuit synthesis system.  Rules are associated with model instances representing circuit components and contained in a data base.          Application of the rules results in the replacement of one or more of the model instances with other model instances or in alteration of values associated with the model instances or in the alteration of parameter values in the data base.  Model instances are designated as VISIBLE or INVISIBLE.  INVISIBLE model instances are ignored during logic circuit synthesis. That is, the rules associated with INVISIBLE model instances are not tested.  VISIBLE model instances may be NEW or INACTIVE.  All VISIBLE model instances are initially NEW.  If no rule associated with a model instance is TRUE, the model instance becomes INACTIVE.  If at least one rule associated with a model instance is TRUE, one or more model instances are replaced and all inserted model instances and model instances directly connected to the inserted model instances become NEW.    The number of model instances a rule will replace is called a SIZEWIN value of the rule.  During synthesis, each VISIBLE, NEW model instance is paired with its associated rule having the greatest SIZEWIN value.  The instance-rule pairs are grouped by SIZEWIN value and the rules of the groups having the greatest SIZEWIN value are tested first.  The rules of the group having the smallest SIZEWIN value are tested last.  If a model instance has been replaced by a previously executed rule, it is designated as DELETED and its associated, paired rule will evaluate to FALSE.
Patent CA-2024735-C (CA)
Title: Method and apparatus for the production of bricks and the like
Inventor: MAULE ALEXANDER
IPC: B28B3/26
Filed: 1990-09-06
Granted: 2001-01-30
Abstract: In the production of kiln fired bricks and hollow structural tiles a substantial loss (about 3.5%-7%) occurs during drying and firing, principally in the bottom layers adjacent the kiln car deck. This can be minimized by reducing the size of the core holes in the bottom rows of bricks, large holes being maintained in the upper layers to reduce the load on the bottom bricks, economising in fuel and clay. The method and apparatus involve use of a longitudinally movable core plug for each hole produced the downstream end portion of which produces small holes while an upstream portion produces large holes, the shape being such that in cooperation with the extrusion nozzle uniform flow and compression are maintained to equalise final column swell sizes as much as possible for both large and small core hole brick preforms. The pressure of the clay flow can move the plug to the position for the production of large core holes, while an automatic controlled motor means move the core plugs to the position for the production of small core holes, the core plug can be moved to the position in which the smaller core hole size becomes zero for the production of solid "paver" bricks.
Patent CA-2028408-C (CA)
Title: Magnetic drive spiral conveyor system
Inventor: JONES GARLAND W
IPC: B65G21/18
Filed: 1990-10-24
Granted: 1998-06-02
Abstract: A spiral conveyor system utilizing an endless flat belt is disclosed.  The belt travels in an endless path which includes a spiral portion. The belt is primarily driven in the spiral portion by a frictional engagement between the belt and a rotating driving element.  The frictional engagement results from a combination of a tension induced in the belt by a secondary drive and a magnetic force between the rotating driving element and the belt.
Patent CA-2037703-C (CA)
Title: Laser curing of contact lens
Inventor: MCBRIERTY VINCENT
IPC: G02C7/04
Filed: 1991-03-07
Granted: 2000-05-02
Abstract: A process for curing a photopolymerisable contact lens material comprising the step of irradiating the photopolymerisable contact lens material with laser radiation having a wavelength of between approximately 200nm to approximately 400 nm for a predetermined time period.
Patent CA-2038183-C (CA)
Title: Automated telephonic data transfer system
Inventor: WORTHINGTON CRISTIAN A
IPC: H04N1/00
Filed: 1991-03-13
Granted: 1994-08-02
Abstract: A system for the automated transfer of data includes a means for transmitting a paper form by telephone, a means for re-ceiving the transmitted image of that form, and a computer con-nected to the receiving means.  The format on the paper form is prepared using a program on the computer, and a copy of that for-mat is stored in the computer.  The format includes option boxes, alphanumeric blocks for specific data collection and blank figure-8 boxes for collecting numerical information.  An operator of the computer selects the particular format required according to the needs of the location(s) having the transmitting means.  The for-mat is then transmitted to the location(s) either physically as a paper form or electronically over the telephone.  Personnel at the location(s) select from the various options on the paper form, and return an image of the form by telephone to the receiving means. Without requiring human supervision, the computer interprets the responses using its stored knowledge of the positions on the form at which the various options were placed when the particular for-mat was created.  The response may include data that the computer adds to data bases or may be a command such as asking the computer to send the current state of a data base by telephone to the loca-tion(s).
Patent CA-2042950-C (CA)
Title: Automatic power control circuit for use with a radio telecommunication apparatus
Inventor: AISAKA HIDEKI
IPC: H04B7/26
Filed: 1991-05-21
Granted: 1995-07-11
Abstract: An automatic power control (APC) circuit for use with a radio telecommunication apparatus. The apparatus transmits radio frequency signals at a power level prescribed by a level control signal.          In the automatic power control circuit, transmission power level is detected from the output of a duplexer. Accordingly, even if signal loss in a filter of the duplexer varies on the frequency of signals passing therethrough, transmission power level is accurately detected and the detected level is feedbacked to an amplifier of the APC circuit.
Patent CA-2044911-C (CA)
Inventor: TESHIBA SADAO
IPC: C12N15/09
Filed: 1991-06-18
Granted: 1998-04-21
Abstract: Disclosed is a process for producing ascorbic acid-2-phosphate which comprises the steps of reaction, in aqueous medium, of ascorbic acid with a phosphate donor in the presence of cells, treated cells, a culture broth or a treated culture broth, of a microorganism belonging to the genus Escherichia and carrying a recombinant DNA comprising a gene isolated from a microorganism belonging to the species Pseudomonas azotocolligans and coding for ascorbic acid-phosphorylating enzyme until a recoverable amount of ascorbic acid-2-phosphate is accumulated in the aqueous medium, and recovery of ascorbic acid-2-phosphate therefrom.
Patent CA-2045736-C (CA)
Title: Novel sulfurized acrylic compounds; process for preparing them and theiruse for synthesizing new polymers
Inventor: CERF MARTINE
IPC: C08F28/00
Filed: 1991-06-26
Granted: 2001-04-10
Abstract: Process for the preparation of a (meth)acrylate (VI) where G = -CH2SR' (R' = alkyl which may carry an OH functional group, in which case Q = alkyl, or else H); or G = H or CH3, in which case Q = -(CH2)n-SxOyZ (1 </= n </= 12; 1 </= x </= 3; 0 </= y </= 2; and Z = alkyl, cycloalkyl, alkenyl, aryl, alkylaryl, aralkyl or heterocyclic ring which may carry an ester functional group), by reaction of a (meth)acrylate (VII), where R = H, CH3 or -CH2X (X = Hal and Q = alkali metal or alkyl) with a sulphur compound R'SH or ZS(CH2)nX, the said reaction being carried out in an at least partially aqueous medium at 50-100 DEG C or in an organic solvent whose b.p. < 100 DEG C, in the presence of at least one polymerisation inhibitor and of at least one phase transfer agent and resulting, when R = H or CH3, in a (meth)acrylate (VI-a) where G = H or CH3 and y = 0, in which case this first reaction may be followed by an oxidation reaction at approximately 10-60 DEG C, to obtain a (meth)acrylate (VI) where y > 0. <IMAGE>
Patent CA-2060176-C (CA)
Title: Small particle drug compositions
Inventor: ILLUM LISBETH
IPC: A61K9/14
Filed: 1990-11-01
Granted: 2001-01-09
Abstract: A drug delivery composition for intranasal delivery comprises a plurality of bioadhesive microspheres and active drug associated with each microsphere, at least:90 wt % of the microspheres having a diameter in the range 0.1 µm to 10 µm. The microspheres may be of starch, gelatin, dextran, collagen or albumin. Suitable drugs include peptides, such as insulin, and antigenic vaccine ingredients. The composition may, additionally comprise an absorption enhancer. The microspheres are administered to the nasal cavity by a means such that the product of the square of the microsphere diameter and the flow rate is greater than 2000 µm2 litres/min.
Patent CA-2064481-C (CA)
Title: Method of producing .alpha.,.beta.-unsaturated ketolactones
Inventor: UENO RYUJI
IPC: C07D407/12
Filed: 1992-03-31
Granted: 1996-12-24
Abstract: The present invention provides a method of preparing .alpha.,.beta.-unsaturated ketolactones which are useful in the production of prostaglandins having one or more halogen substituent(s) at position 16 or 17 in high yield, in which, a dimethyl (2-oxoalkyl) phosphonate having one or more halogen substituents (as a starting material) is reacted with a bicyclolactone aldehyde in the presence of an alkali metal hydride and a zinc compound.
Patent CA-2066043-C (CA)
Inventor: BJORNARD ERIK J
IPC: G02B1/11
Filed: 1991-07-31
Granted: 2004-02-17
Abstract: A coating (15) for an article (28) comprising layers of nitrides of certain transition metals (22, 24) to provide an electrically- conductive, light-attenuating, antireflection surface.
Patent CA-2066956-C (CA)
Title: Snap-in mount for housing within panel
Inventor: PIM KENDALL A
IPC: F16L5/00
Filed: 1992-04-23
Granted: 1996-05-21
Abstract: An integrally molded housing having outwardly directed, spaced-apart arms thereon for mounting within or attachment to a panel is disclosed.  The arms are located on the body portion of the housing such that a distance slightly less than the thickness of the panel in which the housing is to be received exists between the end of each arm and a circumferen-tial flanged surface on the housing.  As the housing is being received through the panel, the arms are deflected inwardly and then spring outwardly causing a surface on the end of each arm to engage a surface on a complementary keyway in the panel.  Another surface is provided on the end of each arm to prevent  the  disengagement  of  the  arm  from  the  surface surrounding   its   adjacent   complementary   keyway   upon longitudinal movement of the housing toward the panel.  The housing can be readily removed from the panel by the applica-tion of inwardly directed pressure on the arms.
Patent CA-2068250-C (CA)
Title: Above-floor service fitting for poke-through wiring device
Inventor: WUERTZ EMIL S
IPC: H02G3/18
Filed: 1992-05-08
Granted: 2002-08-27
Abstract: A poke-through wiring device for mounting in a bore opening through a concrete floor slab includes individual tubes for through-floor passage of power supply and data/communication conductors, an intumescent barrier for sealing the bore, and an above-floor service fitting having a main frame including a bottom wall having spaced apart power supply and low voltage data/communication openings therethrough. A pair of opposing sidewalls extend upwardly from the bottom wall and each defines a plurality of receptacle openings. A unitary receptacle barrier mounted on and cooperating with the frame isolates the power supply opening, at least one receptacle opening in one of the sidewalls and at least two of the receptacle openings in the other of the sidewalls from the data/communication opening.      An auxiliary frame may be connected to the main frame to increase the number of available receptacle openings.
Patent CA-2079126-C (CA)
Title: Barrel assembly and composite stress plate
Inventor: MOSSMAN JEFFREY L
IPC: E04D3/36
Filed: 1992-09-25
Granted: 1997-11-04
Abstract: A composite stress plate for securing insulation to a roof deck with a fastener includes a metal plate having a drawn central cup with a concentric aperture and a  plastic  insert  having  a  central  throughbore  for receiving the fastener in a threaded manner.  The plastic insert may have a hub which corresponds in shape to and is adapted to snappingly engage the concentric aperture in the metal plate, or the insert may be received by the cup in  the metal  plate  and  retained  therein.    Means  for preventing relative rotation between the plastic insert and the metal  plate are provided  in  either case.   A plurality of depressed ramps are disposed within the plate having cleats  for engaging the  insulation.   The ramps enhance  alignment  of  the  composite  stress plate  on  a barrel  assembly  of  an  installation  tool  and  precise placement of the threaded fastener into the roof deck is achieved.    The  barrel  assembly  has  a  plate  retaining member having  an  engagement  face  with  a  plurality  of locator projections extending downwardly therefrom.   The locator projections may  include  three metal  studs  for insertion into the ramps.  The locator projections engage the plate at three contact points to hold the stress plate against  rotation while the  fastener  is being threaded through the plastic insert and into the roof deck by the installation tool.
Patent CA-2085883-C (CA)
Title: Self-loading controlled deflection roll
Inventor: ROERIG ARNOLD J
IPC: F16C13/00
Filed: 1991-05-30
Granted: 1995-01-17
Abstract: A self-loading controlled deflection roll (10) for forming a pressure nip (N) with another roll (4) has at least one support shoe (22, 24) mounted in a stationary support shaft (12) for controlling the deflection of the roll shell (14) in the direction of the nip (N). At either end of the controlled deflection roll, a pair of opposed guide shoes (38, 40, 42, 44) are slidably mounted on the stationary support shaft (12) to apply pressure against the roll shell (14) to stabilize the position of the roll shell relative to the sta-tionary shaft. At least one guide shoe (40) on either end of the roll is equipped with a compensating piston to permit its face sur-face (57) to move radially outwardly relative to the guide shoe support on the stationary shaft. The guide shoes slidably recipro-cate in planes parallel to the plane (15) of the nip through the longitudinal axis (16) of the roll and provide opposed, equal stabilization forces at substantially right angles to the plane of the nip. The guide shoes also have axially extending pads (64, 64') for bearing against annular end surfaces on the roll shell to maintain the roll shell fixed in the longitudinal direction relative to the support shaft during operation.
Patent CA-2088085-C (CA)
Title: Method for separating conjunct polymeric byproducts from mixture containing hydrofluoric acid and a sulfone
Inventor: CHILD JONATHAN E
IPC: C07B61/00
Filed: 1993-01-26
Granted: 2000-11-07
Abstract: A method for separating conjunct polymers and sulfolane from a mixture containing conjunct polymers, sulfolane, and hydrofluoric acid is disclosed, which method comprises the sequential steps of separating hydrofluoric acid from the mixture to provide an intermediate stream containing less than 30 percent hydrofluoric acid by weight and gravitationally separating the intermediate stream into a sulfolane-enriched stream and a conjunct polymer-enriched stream.
Patent CA-2088626-C (CA)
Title: Load-control circuit for a mains-powered asynchronous single-phase capacitor motor
Inventor: FLUECKIGER DANIEL
IPC: H02P25/04
Filed: 1992-06-04
Granted: 1998-01-06
Abstract: Disclosed is a circuit for controlling the load of an asynchronous motor (11), the circuit comprising two capacitors (19, 20), one of which (20) can be connected, by means of a switch (70), in parallel with the other (19). Control is provided by a current sensor (30) and a voltage sensor (40), whose signals (S1, S2) are compared by a comparator (25). Depending on the relative size of the signals (S1,  S2)  a switch control unit  (60) with relaxation hysteresis characteristics switches the switch (70) on or off. The circuit is simple, operates independently of the mains voltage (U) being used and its switch point can be adjusted by means of the current sensor (30).
Patent CA-2089316-C (CA)
Inventor: CHANG VICTOR
IPC: E21B47/00
Filed: 1993-02-11
Granted: 1996-04-02
Abstract: A system for monitoring performance of a pumping unit of an oil well includes a first sensor for measuring the inclination angle of a beam forming part of the pumping unit, a second sensor for measuring the load on the beam, and a third sensor for measuring the load on an electrical motor used in conjunction with the pumping unit.  The first sensor includes a cantilevered pendulum member which moves in response to changes in the beam inclination angle and strain gauges affixed to the pendulum member for generating an electrical signal indicative of the instantaneous inclination angle.  The second sensor includes a deformable sensor plate mounted to the beam and piezoresistive gauges attached to the plate for providing a signal indicative of the load on the beam.  The third sensor includes a sensor head attached to a cable for supplying electrical power to the motor.  The sensor head includes a sensor coil spaced from the cable so that the magnetic field surrounding the cable induces a current flow in the sensor coil.  By measuring the voltage across the ends of the sensor coil, a signal indicative of the load on the motor is generated.
Patent CA-2096529-C (CA)
Title: Recombinant avirulent salmonella antifertility vaccines
Inventor: CURTISS ROY III
IPC: C07K16/40
Filed: 1991-11-20
Granted: 2003-01-21
Abstract: A virulent microbes which include a recombinant expression system encoding a gamete-specific antigen, are disclosed. The microbes can be used in compositions to immunize a vertebrate subject against the gamete-specific antigen, thereby preventing or reducing conception rates in the subject to which they are administered.
Patent CA-2099144-C (CA)
Inventor: OLIVIER ANDRE W
IPC: G01V1/20
Filed: 1993-06-25
Granted: 1998-09-01
Abstract: For confidently coupling towed external devices to a marine seismic cable, a latch mechanism having a novel swing plate to improve the adjustability of the mechanism and provide a positive, clearly visible indication of latched and unlatched conditions.          The swing plate serves as an external linkage between a rotatable adjustment head for a locking pin and a translatable lever arm for a locking rod.  The locking pin and the locking rod extend from a latch housing on a towed device, such as a cable-leveling bird, and engage with a keyhole slot in a locking collar on the streamer.          The swing plate engages the adjusting head, which protrudes from a side of the housing,  in a push-nut engagement.   Shoulders positioned approximately radially opposite each other on the swing plate push against the lever arm, which also protrudes from the side  of  the  housing,  as  the  adjustment  head  is  rotated  to completely extend or retract the locking rod into the mating slot, thereby locking or unlocking the mechanism as the lever arm is jammed to the top or the bottom of a guide slot. As the adjustment head is rotated to force the lever arm to the top or the bottom of the guide slot, a positive stop, which is clearly evident to an operator performing the adjustment, is provided.  The structure of the swing plate, such as structure along a radial sector of the swing plate between the shoulders, is also used to occlude and reveal clearly visible indicia of a locked or unlocked mechanism as the swing plate is rotated.
Patent CA-2101937-C (CA)
Title: Applicator device housing multiple elastic ligatures in a series
Inventor: YOON INBAE
IPC: A61B17/128
Filed: 1991-02-04
Granted: 1999-03-16
Abstract: An elastic ligature applicator device (10) including a central member (14) for storing a plurality of unexpanded elastic ligatures (24) in series fashion, a conical expander (22) and a ligature dilator (16) for pushing a ligature over the expander and onto grasped anatomical tissue. An optional applicator manipulation facilitating assembly may be provided to ease use of the applicator device during a surgical procedure. Components are readily disassembled to load a series of unexpanded elastic ligatures onto the applicator device.
Patent CA-2116876-C (CA)
Title: Partition wall framing assembly for suspending gypsum board panels
Inventor: GILMORE THOMAS MCCRACKEN
IPC: E04B2/74
Filed: 1994-03-01
Granted: 2001-12-25
Abstract: A structural frame is provided comprising opposed ceiling and floor channels and spaced apart, C-shaped metal studs extending vertically between the channels. Each stud has its single central web positioned transversely relative to the main plane of the frame. Pairs of short brackets are suspended from the webs of adjacent studs in opposed and vertically spaced relation. Each bracket comprises a horizontal V-shaped wall having downwardly extending side walls which form vertical end edges at the end of the bracket adjacent the web. A plurality of hooks extend from these end edges. A pattern of vertical slots is formed in the stud web and the bracket hooks extend into these slots and attach to the web. The bracket is sized to fit snugly between the side walls of the C-shaped stud, to reinforce these walls so that they do not collapse inwardly when loaded. A gypsum board panel having suspension assemblies attached to its back surface is suspended from the brackets as the suspension assembly clips engage the sloping segments of the bracket's V-shaped wall. The bracket end edges bear against the web and distribute the panel load thereover, so that the stud is not deformed. Each bracket is "single sided" -that is, it extends perpendicularly from only one side of the web. Thus a stud and bracket can be used to start a wall from an abutting position with another wall.
Patent CA-2118436-C (CA)
Inventor: CHARBONNEAU FRANCOIS
IPC: E06C7/42
Filed: 1994-10-19
Granted: 1997-02-18
Abstract: Ladder stabilizers for lateral attachment to an extension ladder for inhibiting sideways slipping and falling thereof accordingly to full  safety.  Both  sides of a  ladder are attached to the side rail a long tube support made from non-rusting metal and connected approximately in its middle with a non-articulated bracing forming an A frame with the ladder. The lock for the telescoping sections visibly indicates they are locked, this as per American National Standard ANSI A14.2-1990,  par.  6.7.10,  the installation being fully secured because of the technically safe locking device the telescopic tube is blocked with a spring pin.  Ladder stabilizers are telescopic tubes for uneven ground and are pivotable along only the same surface of the ladder,  thus enlarging the sustension polygone for ladder support. For storage position, horizontal  braces  are  detached  and  rotate  on  a  metal attachement on the side rail of the ladder to become parallel with the ladder, the telescopic tubes are also in the same position and are firmly tied with a tension hook. This ladder stabilizer is to be added to any existing ladder extensible or non-extensible.