baber/WOPTO huggingface dataset:
Patent CA-2023812-A1 (CA)
Title: Acetylenes disubstituted with a heteroaromatic group and a 2-substituted chromanyl, thiochromanyl or 1,2,3,4 - tetrahydroquinolinyl group having retinoid-like activity
Inventor: CHANDRARATNA ROSHANTHA A S
IPC: A61K31/495
Filed: 1990-08-22
Abstract: SUBSTITUTED CHROMANYL, TRIOCHROMANYL OR 1,2,3,4 - TETRAHYDROQUI-NOLINYL GROUP HAVING RETINOID-LIKE ACTIVITY                   Abstract of the Disclosure Retinold-like activity is exhibited by compounds of the formula   where X is S, O or NR'; where R' is hydrogen or lower alkyl;       R1, R2 and R3 are hydrogen or lower alkyl; R4 and R5 are hydrogen or lower alkyl with the proviso that R4 and R5 cannot both be hydrogen, A is pyridyl, thienyl, furyl, pyridazinyl, pirimidinyl, pyrazinyl, thiazolyl or oxazolyl; n is 0 - 5, and B is H, -COOH or a pharmaceutically acceptable salt, ester or amide thereof, -CH2OH or an ether or ester derivative, or -CHO or an acetal derivative, ox -COR1 or a ketal derivative where R1 is -(CH2)mCH3 where m is 0-4, or a pharmaceutically accept-able salt thereof.
Patent CA-2024208-A1 (CA)
Title: Bi-directional back stopping clutch
Inventor: OSTRANDER ROBERT J
IPC: F16D67/02
Filed: 1990-08-29
Abstract: A bi-directional back stopping clutch having improved output pins connecting between brake shoes and an output member. During driving, the output pins transfer torque to the output member. When a sufficient back driving force is applied to the output member, the output pins skew to move the brake shoes into contact with a brake drum. The contact surfaces between the pins and the output member and between the pins and the brake shoes are rounded and the spacings between the contact surfaces are adjusted to provide a desired braking action. In one embodiment, the contact surface between each pin and the output member is of a smaller diameter than the contact surfaces between the pin and the brake shoes.
Patent CA-2024297-A1 (CA)
Title: Flame retardant asphalt composition
Inventor: JOLITZ RANDAL J
IPC: C08K3/34
Filed: 1990-08-30
Abstract: ABSTRACT OF THE INVENTION      Disclosed is a fire retardant asphalt composition. The composition comprises:      (a)  about 40-60% wt asphalt;      (b)  about 1-20% wt thermoplastic;      (c)  about 15-40% wt flame retarding agent; and (d)  the flame retarding agent comprises.            (i)   about 65-95% weight potassium citrate, (ii)  about 1% weight silicone polymer.
Patent CA-2024477-A1 (CA)
Inventor: ZDROJKOWSKI RONALD J
IPC: A61M16/00
Filed: 1990-08-31
Abstract: An improved methodology and apparatus  for the treatment of sleep  apnea through  application of  alternating  high and  low level positive airway pressure within  the airway of the patient with the high and low airway pressure being coordinated with the spontaneous respiration of the patient.
Patent CA-2025874-A1 (CA)
Title: Ionomer composition
Inventor: HIRASAWA EISAKU
IPC: C08L23/26
Filed: 1990-09-20
Abstract: Disclosed is an ionomer composition comprising an ethylene/unsaturated carboxylic acid copolymer which is at least partially neutralized with at least one alkali metal selected from the group consisting of potassium, rubidium and cesium, wherein the ethylene/unsaturated carboxylic acid copolymer is a blend comprising (A) an ethylene/unsaturated carboxylic acid copolymer having an unsaturated carboxylic acid content of 6 to 25 mole% and (B) an ethylene/unsaturated carboxylic, acid copolymer having an unsaturated carboxylic acid content of 0.5 to mole% at an (A)/(B) weight ratio of from 10/90 to 80/20, and the alkali metal is present in an amount at least 0.4 millimole but smaller than 1.3 millimoles per gram of the ionomer composition.      This ionomer composition has an excellent antistatic property and an excellent heat moldability.
Patent CA-2027515-A1 (CA)
Title: Preflash measurement technique
Inventor: COLTMAN JUDITH N
IPC: H05B41/30
Filed: 1990-10-12
Abstract: An automatic exposure control system for an electronic flash camera incorporates an arrangement for measuring the reflectivity of a scene illuminated by the electronic flash prior to exposure in order to determine certain photographic scene characteristics for use in controlling a subsequent photographic exposure, an arrangement that substantially reduces the complexity and energy consumption of the electronic flash system while improving the ability of the exposure control system to accurately determine these scene characteristics. The arrangement includes the pre-exposure firing of the electronic flash to illuminate a scene with a pulse of light for a short, fixed period of time.     A reflection of this light pulse is integrated for a portion of this fixed period of time. The final integrated value of the reflected light is a measure of subject reflectivity. This integrated value is then employed to derive the desired photographic scene characteristics.
Patent CA-2028049-A1 (CA)
Title: Control of exposure energy delivery
Inventor: LEA MICHAEL C
IPC: H01L33/00
Filed: 1990-10-19
Abstract: ABSTRACT         Title:  Control of Exposure Energy Delivery Printing on photo-sensitive materials is effected by a linear array (10) of light emitting diodes (LEDs) energized by a power supply unit 20. The LEDs (101 ... 10x) are simultaneously enabled by a strobe pulse (S). Each LED has an individual input to control whether or not it is engergised during a strobe pulse (S).  The different exposures for each pixel are achieved by selectively controlling the LEDs (101 ... 10x) in each of a series of weighted strobe pulses whose base durations are in a power of 2 series.  For this end the exposure for each pixel along the line is stored as an n-bit word and successive bits are taken from the words by a bit slicer (38) to be entered in an array control memory (40).  Due to transients mostly associated with the power supply (20), the energisation of the LEDs does not exactly follow the rectangular strobe pulses.  A dual compensation technique is disclosed.  A pulse generator (42) generates the base series of pluses synchronised with the bit slicer (38) and firstly this base series is modified by a compensation pulse generator (44) to add (or subtract) an increment from each of the weighted series of pulses.  A second compensation is made fro the transient effect itself being a function of the number of LEDs (101 ... 10x) to be turned on for any strobe pulse (6).  To this a counter (46) connected to the bit slicer (38) provides a count (p)  of the number of 1's which is further used by the compensation pulse generator to modify the actual duration of the strobe pulses (S).  All these operations may be done by means of software control.  In particular the compensation pulse generator may use a look up table of strobe pulse durations convering both the weighted base pulse durations and the number (P) of LEDs turned on.  The look up table may be calibrated to the individual LED array (10).  The compensation technique may also be applied in other printing arrays, such as those using liquid crystal shutters.  These have turn-on transients although the number-on effect here is small.
Patent CA-2028331-A1 (CA)
Title: Double-walled bottle for nmr probe
Inventor: GLENAT HENRI
IPC: G01R33/24
Filed: 1990-10-23
Abstract: DESCRIPTIVE ABSTRACT     BOTTLE FOR NMR PROBE          The bottle according to the invention comprises a double wall (34, 36) defining a coaxial volume (38) corresponding to the "bubble" to be left after filling.  In normal operation, the liquid is ejected from said volume and occupies the remainder of the bottle.          Application to the production of NMR probes.            (Fig. 2) B 10206.3 RS
Patent CA-2033080-A1 (CA)
Inventor: ITO TAKASHI
IPC: E04C5/07
Filed: 1990-06-08
Abstract: ABSTRACT      Disclosed are a high-purity alumina continuous filament woven fabric comprising a high-purity alumina continuous filament having an alumina content of at least 95% by weight and a filament diameter of 5 to 20 µm, a hybrid woven fabric comprising this high-purity alumina continuous filament and a high-strength continuous filament having a tensile strength of at least 200 kg/mm2, processes for the preparation of these woven fabrics, a high-purity alumina continuous filament valuable for the production of these woven fabrics, and a process for the preparation of this high-purity alumina continuous filament.  These woven fabrics are very useful as a reinforcing fibrous substrate of a fiber-reinforced composite material or as a heat-insulating material.
Patent CA-2035053-A1 (CA)
Inventor: MCASKILL JOHN P
IPC: F16H3/093
Filed: 1991-01-28
Abstract: SIXTEEN SPEED POWERSHIFT TRANSMISSION      ABSTRACT OF THE DISCLOSURE    A 16-speed drop box transmission is provided in a particularly compact double-diamond arrangement.  Most of the shafts in the transmission, as well as many of the gears and clutches, are identical and interchangeable.  This significantly reduces the number of different parts needed to make the transmission.  Most of the gears which do the actual power modification to produce the various gear ratios are rotatably mounted about these interchangeable shafts.  The basic design is highly flexible, since different gears may easily be substituted for one or more of these rotatably mounted gears to produce a transmission with different gear ratios.
Patent CA-2035733-A1 (CA)
Inventor: DISESA FRANK J JR
IPC: B65D21/06
Filed: 1991-02-05
Abstract: ABSTRACT           A stackable container has an open top and a substan-tially open front defined by a flange, with a transparent cover securable over the front opening to allow viewing of the contents of the container.  The container has a removable lid with formed structures for stacking additional containers thereon, with the cover hinged from the lid.  The container also has strengthening ribs which are incorporated in the sides and back of the con-tainer, with the ribs providing complementary recesses for nesting the containers when empty.
Patent CA-2036192-A1 (CA)
Title: Heterocyclic carboxylic acids and esters
Inventor: MEANWELL NICHOLAS
IPC: C07D277/24
Filed: 1991-02-12
Abstract: ABSTRACT            Heterocyclic acids and esters useful as inhibitors of mammalian blood platelet aggregation characterized by Formula I, II and VIII are disclosed.                 HET1-(CH2)nCO2R        (I)                            (II)                           (VIII) Formula I compounds are those wherein n is 6-9, R is hydrogen, lower alkyl or an alkali metal ion, and HET1 is heterocyclic radical selected from the group consisting of 3,4-diphenyl-1H-pyrrol-1-yl, 1,6-dihydro-6-oxo-3,4-diphenyl-1-pyridazinyl, 2,3-dihydro-3-oxo-5,6-diphenyl-1,2,4-triazin-2-yl, 1-oxo-4,5 diphenyl-2H-pyrimidin-1-yl, 2,5-dioxo-3,4-diphenylimidazolidin-1-yl, 5-(diphenylmethyl)-2H-tetrazol-2-yl, 4,5-diphenyl-2-thiazoyl, 4,5-diphenyl-1H-imidazol-2-yl, and 1,5-diphenyl-1H pyrazol-3-yl.          Formula II compounds are those wherein R1 is hydrogen, lower alkyl or an alkali metal ion, and the radical -OCH2CO2R is attached in the 3 or 4 ring position; and HET2 is a heterocyclic radical selected from the group consisting of 4,5-diphenyl-2-thiazoyl, 4,5-diphenyl-1H-imidazol-2-yl, 3,4-diphenyl-1H-pyrazol-1-yl, 4,5-diphenyl-1H-pyrazol-1-yl, 1,5-diphenyl-1H-pyrazol-3-yl, 1,6-dihydro-6-oxo-3,4-diphenyl-1-pyridazinyl,  2,3-dihydro-3-oxo-5,6-diphenylmethyl-1,2,3-triazin-2-yl, and 5-(diphenylmethyl)-2H-tetrazol-2-yl.     Formula VIII compounds are those wherein R1 is hydrogen, lower alkyl or an alkali metal ion, and the radical -OCH2CO2R is attached in the 3 or 4 ring position.
Patent CA-2036752-A1 (CA)
Title: Solenoid actuator having a magnetic flux sensor
Inventor: BANICK GERARD S
IPC: G01R33/24
Filed: 1991-02-20
Abstract: SOLENOID ACTUATOR HAVING A MAGNETIC FLUX SENSOR    Abstract of the Disclosure A solenoid actuator comprising a coil or coils of electrical wire and a plugnut and movable core within the coil(s).   A magnetic yoke surrounds the coil(s), the axis of the latter extending across the magnetic circuit defined by the yoke.          Relatively large and small permanent magnets are associated with the yoke on opposite sides of the axis, the magnets producing flux in opposite directions.  A flux sensor, closer to the small magnet, senses changes in direction of the flux.  When the core and plugnut are separated, the large magnet flux predominates throughout the yoke.  When the core engages the plugnut, the small magnet flux predominates in its portion of the yoke, this change in flux direction being detected by the sensor.  Thus, the sensor can be used to indicate the position of the core with respect to the plugnut.
Patent CA-2037281-A1 (CA)
Title: Large scale, non-chromatographic purification of chromogenic cryptahemispherands (1.1) and (2.1)
Inventor: CZECH BRONISLAW P
IPC: C09B67/54
Filed: 1991-02-28
Abstract: ABSTRACT     A process is disclosed for the non-chromatographic purification of chromogenic cryptahemispherands of the following general formula (II) which are capable of selective binding of sodium ion in aqueous solution:                                       (II) wherein:   R, same or different, is hydrogen, lower alkyl, lower alkylidene, lower alkenyl, allyl, aryl or benzyl;   R', same or different, is lower alkyl, lower alkylidene, lower alkenyl, allyl, aryl or benzyl;   R", same or different, is hydrogen, lower alkyl, lower alkylidene, lower alkenyl, allyl, aryl or benzyl;   Z is halogen;   Y is electron withdrawing group, e.g. CN, NO2, CF3, COOR; m is 1 to 3; n is 1 to 3; a is 1 to 3; b is 1 to 3; k is 1 to 2;   1 is 1 to 2; k and 1 are not both 2; and x is 2 to 4, The compound of formula (II) is isolated from the reaction mix-ture by consecutive treatment of the crude reaction product with suitable solvents in order to separate unreacted organic components, inorganic material, and polymers and provide a sodium-free final product.
Patent CA-2038095-A1 (CA)
IPC: H01R4/36
Filed: 1991-03-12
Abstract: BATTERY CABLE CONNECTOR                        ABSTRACT    There is disclosed a connector for electrically connect-ing the bared ends of one or more battery cables to a post of a storage battery by holding the cable ends are held in direct contact with the post.
Patent CA-2038268-A1 (CA)
Title: Alkaline cleaner and method
Inventor: DECK PHILIP D
IPC: C11D1/60
Filed: 1991-03-14
Abstract: ABSTRACT OF THE DISCLOSURE      A cleaning and etching solution and method for aluminum surfaces is disclosed which is an alkaline formulation which includes a quaternary cationic surfactant.  The preferred cleaner includes an alkali metal hydroxide, gluconic acid, a first phosphonate, a second phosphonate and a quaternary cationic surfactant.
Patent CA-2038894-A1 (CA)
Inventor: PARK KYUNG T
IPC: H01H57/00
Filed: 1991-03-22
Abstract: ABSTRACT         A piezoelectric snap action switch for connecting at least two conductive elements via first and second upwardly convex snap action plates disposed in an overlapping manner with respect  to  each  other  and  respectively  connected  to  the respective  conductors.    A piezoelectric  polymer  film with electrodes on respective surfaces thereof is disposed between the snap action plates so that upon depression of the snap action plates the piezoelectric polymer film is caused to extend or contract along a surface thereof so as to conduct an electrical signal between the electrodes on its respective surfaces.  The electrical signal is then conducted between the conductors via the electrodes by electrically coupling the electrodes to the snap action plates.  The resulting structure is quite rigid so that the switch is virtually insensitive to vibration,  and because of the plural snap action plates, metal lead attachment is greatly facilitated.
Patent CA-2039533-A1 (CA)
Title: Pipeline leak detector apparatus and method
Inventor: HASSELMANN DETLEV E M
IPC: G01M3/28
Filed: 1991-04-02
Abstract: PIPELINE LEAK DETECTOR APPARATUS AND METHOD            ABSTRACT OF THE DISCLOSURE    A method for detecting leaks in a fluid pipeline where the  pressure  supply  pump  remains  ON  during  the  test procedure and pressure on both sides of a closed shut-off valve in the pipeline is maintained equal.   A novel flow meter is provided comprising a parallel combination of a solenoid value and a pressure differential switch connected across the shut-off valve.
Patent CA-2040299-A1 (CA)
Title: Method for discriminating microphonic noise in proportional counters
Inventor: GOLD RANDY
IPC: E21B47/01
Filed: 1991-04-11
Abstract: ABSTRACT OF THE DISCLOSURE          This disclosure is directed to a detector system for use in measuring while drilling (MWD) equipment. It comprises preferably duplicate chambers positioned to one another and mounted in a MWD system where they are subject to the same shock and vibration. The shock and vibration impinge on the two chambers, and cause two output signals to be formed. The two output signals are applied to a differential amplifier so that the microphonic portion of the signal is cancelled. This then leads to a differential output signal which carries in it the signals representing nuclear events detected by the similar or duplicate detector means. Alternately, a single chamber can be used if it is provided with two anode wires and they are connected to the differential amplifier for signal cancellation.          HLS 89.124
Patent CA-2041616-A1 (CA)
Inventor: COPELAND RICHARD L
IPC: G01V3/08
Filed: 1991-05-01
Abstract: A system for use in detecting the presence of an electronic article surveillance tag in an area subject to surveillance comprises first and second antenna units disposed on opposed sides of the area, each of the antenna units incorporating therein at least first and second antennas circumscribing a common center thereof at respective different distances from the common center.  Excitation circuitry is provided for exciting each first antenna at a greater level than each second antenna, the excitation of the first and second antennas by the exciting circuitry being of respective opposite phasing.  The system further comprises a receiver connected to the first and second antenna units and alarm circuitry connected to the receiver to provide output indication of the presence of the tag in the area subject to surveillance.
Patent CA-2042056-A1 (CA)
Title: Constant flow valve
Inventor: YOKOYAMA IKUO
IPC: F16K17/30
Filed: 1990-09-28
Abstract: ABSTRACT      A constant flow valve comprises a valve body (5) having an inlet passage (2), an outlet passage (3), and a hollow chamber (4) disposed between the passages and inclined with respect to the inlet passage at a certain angle; an opening (7) for connecting the outlet passage with the hollow chamber, an inner circumferential face of the opening being tapered from an upstream side toward a downstream side; a lid body (17) fitted to the valve body; a spindle (9) supported by the lid body and movable back and forth along the axis of the opening; a cylinder (10) integrally arranged at a lower end of the spindle; a valve shaft (12) freely arranged inside the cylinder and positioned substantially on the axis of the opening; a valve plug (13) fitted to a front end of the valve shaft to create an orifice between itself and the opening; and springs (14, 15) disposed inside the cylinder to force the valve plug away from the opening.  The cylinder (10) is movable back and forth inside the hollow chamber (4), and a lower end face thereof may come into contact with a valve seat portion (6) of the opening (7).  The springs (14, 15) have different spring constants and expand or contract in response to changes in a fluid pressure.  The springs are arranged such that their expanding or contracting actions actually start at different timings.
Patent CA-2043129-A1 (CA)
Inventor: MODAK SHANTA M
IPC: A61B19/04
Filed: 1991-05-23
Abstract: An antiviral surgical or examination glove is obtained by blocking adsorption sites for the antiinfective agent which may exist in the lubricating agent, e.g., cross-linked corn starch, or in the material of the glove itself. The glove of the invention comprises an elastomeric hand-shaped body having interior and exterior surfaces and an inner coating disposed on the interior surface of the elastomeric body. The inner coating comprises (a) an antiinfective agent selected from the group consisting of chlorhexidine-and pharmaceutically acceptable salts of chlorhexidine and (b) a lubricating agent which does not significantly adsorb the antiinfective-agent.  The inner coating is effective to deliver an antivirally effective amount of the antiinfective agent within ten minutes of exposure to a liquid.
Patent CA-2044361-A1 (CA)
Inventor: REINSCHMIDT ROBERT M
IPC: G11C11/411
Filed: 1991-06-11
Abstract: Bipolar transistor memory cell and method for use in a random access memory.  A  pair of state elements are cross coupled so that they assume opposite states in accordance with signals applied thereto, a pair of bipolar pass transistors are connected to respective ones of the state elements for applying signals to the state elements, and current flow through the pass transistors is monitored to determine the states of the state elements.
Patent CA-2046481-A1 (CA)
Title: Modular counter mounted fluid dispensing apparatus
Inventor: BRANDENBURG ALLEN E
IPC: A47K5/12
Filed: 1991-07-08
Abstract: Disclosed is a substantially modularized countertop mounted liquid soap dispensing system. The system includes a delivery module comprised of a housing, a frame and an actuator channel through said frame. Residing in the actuator channel is an actuator rod assembly. The lower portion of the actuator rod assembly is free. Attached to the lower portion of the frame is a canister top adapted to engage a canister for enclosing a disposable liquid soap reservoir module.      The liquid soap reservoir module is substantially completely enclosed such that the liquid soap within is not exposed to the atmosphere until it is pumped from the module. The disposable reservoir module includes an enclosing top section, a lower cap means and a pump affixed to the lower cap means. There is a guide cylinder extending from the enclosing top section to the pump for receipt of the free end of the piston rod assembly. The pump is a positive displacement pump which includes hinged winged members which extend outwardly in sealing engagement with the internal walls of the pump housing on the downward pumping stroke. As the pump piston moves upwardly in the pump housing in a non-pumping stroke, the weight and viscosity of the liquid soap within pump housing above the hinged sections causes the hinged sections to pivot inwardly away from the internal walls of the pump housing thereby allowing liquid soap to pass around and below the pump piston in preparation for the next downward pumping stroke. A check valve is provided in the pump discharge to prevent soap from backflowing on the non-pumping stroke. In such manner, the pump piston functions simultaneously as a pump piston and a check valve.      A delivery tube extends from the pump through the spout of the dispensing system thereby preventing liquid soap from contacting the internal walls of the spout.
Patent CA-2046539-A1 (CA)
Title: Method for preparing the working gas in a gas turbine installation
Inventor: KELLER JAKOB
IPC: F02C3/02
Filed: 1991-07-09
Abstract: ABSTRACT OF THE DISCLOSURE In a method for preparing the working gas in a gas  turbine  installation,  the  air  prepared  by  a compressor (1) is mixed, downstream of the compression, with a fuel (4) and then fed to a pressure wave machine (5). This fuel/air mixture fills the revolving rotor cells (11) of this same pressure wave machine (5) in a continuous process.  The mixture caught in the rotor cells  (11)  is then brought to ignition at constant volume. The working gas thus obtained then serves for acting upon a gas turbine (7, 9) placed downstream of the pressure wave machine (5).                          (Fig. 1)