baber/WOPTO huggingface dataset:
Patent CA-2007428-A1 (CA)
IPC: E21B21/14
Filed: 1990-01-09
Abstract: A hydraulic drill hammer with a ram (2a) supported in a spring-loaded manner in the percussion direction relative to the drill rod (15) is driven via reduction gearing (7) with eccentric (12) and connecting rod (6), a liquid jet (25) being deflected as power source via a turbine wheel (20) which is connected to gearing (7). With its residual kinetic energy, the liquid jet (25) then entrains air in a collecting nozzle (26) according to the injector principle and after passing through the narrowest cross-section (27) is decelerated in order to increase pressure. Of the liquid-air mixture developed, a portion is fed as flushing and cooling liquid through the hollow drill rod to the drill bit, while another portion is sprayed for cooling the surrounding rock. The rotary movement for the drill chuck (16) is produced by the gearing (7) via a separate output (13). 
<IMAGE>
Patent CA-2010607-A1 (CA)
Title: Magnetically driven vibrating beam force transducer
Inventor: NORLING BRIAN L
IPC: G01L1/10
Filed: 1990-02-21
Abstract: MAGNETICALLY DRIVEN VIBRATING BEAM FORCE TRANSDUCER             Abstract of the Disclosure A vibrating beam force transducer that can be realized in a silicon micro-machined device such as a micromachined accelerometer. The transducer includes a beam (18) having a longitudinal axis (16), and a drive circuit (24) electrically coupled to the beam for causing the beam to oscillate at a resonantfrequency that is a function of a force applied along the longitudinal beam axis. The drive circuit provides an electrical current to the beam, and the beam, or aconductive portion (18) thereof, conducts the current along a path that includes an axial component parallel to the longitudinal axis. A magnetic field (B) is created intersecting the axial component, such that the electric current interacts with the magnetic field to produce a force that causes the beam to oscillate at the resonant frequency. In a preferred embodiment, the transducer has a double ended tuning fork configuration, and the current path extends along one beam andback along the other beam.
Patent CA-2011447-A1 (CA)
Inventor: ROBBINS RONALD B
IPC: D06B11/00
Filed: 1990-03-05
Abstract: An automated dye pattern application system (1) includes a support bed (6) to support a mat or other dye receiving medium (7); perpendicular guide tracks (10, 11) supporting a carrier (9) on which a dye spray head (8) is mounted; stepper motors (12, 13) engaged between the tracks (10, 11), the support bed (6), and the spray head carrier (9) and forming an x-y plotter apparatus (3) to move the spray head (8) in two dimensions over the mat; and a pneumatic dye supply mechanism (4) to supply liquid dye to the spray head (8) and including control valves to actuate the spray of dye from the spray head (8). A dye control computer (5) is interfaced to the stepper motors (12, 13) and valves and controls their operation. Data representing a digitized image is converted to a file of plotter commands to control the motors to scan the spray head (8) over the mat (7) and spray dye from the spray head (8) at selected picture element locations to reproduce the digitized image in a colored dye pattern on the mat (7).
Patent CA-2012276-A1 (CA)
Title: High luminance thin-film electroluminescent device
Inventor: TONOMURA SHOICHIRO
IPC: H05B33/14
Filed: 1990-03-15
Abstract: A high luminance thin-film electroluminescent device comprising a phosphor layer comprising SrS as the host material and a luminous center.  The phosphor layer is sandwiched between two insulating layers and two thin-film electrodes are provided on each side of the insulating layers.  At least one of the electrodes is transparent, and the excitation spectrum of the phosphor layer exhibits a peak having a maximum value at a wave-length of about from 350 nm to 370 nm.  Such a high luminance thin-film electroluminescent device can be prepared by annealing its phosphor layer comprising SrS as the host material at a temperature of at least 650 °C for at least one hour in an atmosphere of a sulfur-containing gas.
Patent CA-2012602-A1 (CA)
Inventor: TAKAKI AKIRA
IPC: C08L27/06
Filed: 1990-03-20
Abstract: A vinyl chloride resin composition having an improved impact resistance with a good transparency which comprises (A) a graft copolymer reinforcing agent prepared by emulsion-polmerizing 15 to 35 parts by weight of a monomer mixture in the presence of 85 to 65 parts by weight of a butadiene homopolymer or copolymer having a butadiene content as high as 82 % by weight or more, said monomer mixture consisting of 50 to 95 % by weight of an aromatic vinyl monomer such as styrene, 0.1 to 40 % by weight of a vinyl cyanide monomer such as acrylonitrile and 0 to 40 % by weight of other vinyl monomer copolymerizable therewith, and (B) a vinyl chloride resin. The butadiene homo- or copolymer may be treated prior to the emulsion polymerization, in order to prevent the produced graft copolymer particles from coagulating into a massive material, by reacting a small amount of a crosslinking monomer and optionally an alkyl acrylate or methacrylate in the presence of the butadiene homo- or copolymer in the form of an aqueous latex.
Patent CA-2012647-A1 (CA)
Title: Container for liquids
Inventor: BEYENS JOZEF H M
IPC: B65D77/06
Filed: 1990-03-20
Abstract: ABSTRACT    A container for transport, storage and dispensing of beverages, such as beer, comprises an outer container (12) of plastics such as PET, and an inner bag (22) of flexible material, such as layered polyethylene. The inner bag (22) is connected to an outlet (33) which can receive a coupler (60) connecting the outlet to a dispensing tap (80). An inlet (34), which can receive a coupler (70), enables pressurised gas or air to be supplied to the space between the outer container (12) and inner bag (22) to apply pressure to the bag to expel beverage from the bag through the outlet (33). The bag (22) is filled with beverage through the outlet (33), which has a non-return valve (36, 37) to close the outlet, after filling, during transport of the container to the dispensing location. The inlet (34) provides a permanently open passage which, after the container has been emptied and the gas or air line disconnected, allows any remaining pressure to escape, or  removing any danger which might arise with a pressurised container, particularly if the container is discarded. The container is relatively light-weight and inexpensive, and can be filled and used to dispense beverage without the beverage coming into contact with air or pressurising gas at any stage until it leaves the dispensing tap.
Patent CA-2012685-A1 (CA)
IPC: B60S9/12
Filed: 1990-03-21
Abstract: A lifting and lowering system for a trailer or the like includes one or more extendible and retractable legs, with the legs being provided with springs or the like urging the legs toward their retracted position.  The system is a pressurized air/hydraulic system, and includes an air-operated booster valve for extending the legs when loaded.  A master valve assembly is provided for controlling supply of air to the system and for allowing retraction of the legs.  The master valve and air valve include a common actuator shaft so that the system is selectively connected to pressurized air or vented, as appropriate, when leg extension or retraction occurs.  The master valve includes a cam actuator/cam follower piston operated system for selectively providing fluid pressure to a lock valve associated with each leg.  The lock valve is biased toward a normally closed position, and is selectively movable to an open position for allowing extension or retraction of the legs.
Patent CA-2019326-A1 (CA)
Inventor: TANAKA KATSUMASA
IPC: C23C2/32
Filed: 1990-06-19
Abstract: A method for processing a vibratory surface in which a processed object is hung on a hook, the hook is supported by the supporting frame having an air spring, the object is immersed in a surface treating liquid. The height of the air spring is automatically adjusted to the most suitable standard height in response to a weight of the processed object and then the surface treatment is carried out while the hook is being vibrated.   An apparatus for performing this vibratory surface treatment method is provided.
Patent CA-2021067-A1 (CA)
Title: Catalyst compositions for the preparation of polymers of carbon monoxide with olefinically unsaturated compounds
Inventor: WONG PUI K
IPC: B01J31/28
Filed: 1990-07-12
Abstract: A B S T R A C T        CATALYST COMPOSITIONS FOR THE PREPARATION OF POLYMERS OF CARBON MONOXIDE WITH OLEFINICALLY              UNSATURATED COMPOUNDS      Catalyst compositions comprising a Group VIII metal and a tetrakisphosphine of the general formula (R1R2P)4R5, wherein R1 and R2 represent identical or different optionally polarly substituted hydrocarbyl groups and R5 represents a tetravalent organic group which connects the four phosphorus atoms and has such a structure that there are at least two carbon atoms between every two phosphorus atoms, and a process for the preparation of polymers of carbon monoxide with one or more olefinically unsaturated compounds using such a catalyst composition.
Patent CA-2024497-A1 (CA)
Inventor: PHILLIPSON DOUGLAS W
IPC: A61P31/04
Filed: 1990-08-31
Abstract: Derivatives of antibiotics derived from the microorganism streptomyces lydicus subspecies tanzanius, referred to as antibiotics LL-E19020 alpha and beta (formula I), are produced by chemical reaction. The derivatives are also active antibiotics useful in the treatment of bacterial infections. <CHEM> t
Patent CA-2026844-A1 (CA)
Inventor: NUKAGA TADASHI
IPC: D06F33/62
Filed: 1990-10-03
Abstract: A drum-type washing machine includes a resin drum which is rotatably supported in a frame by a horizontal shaft.  The resin drum includes a body portion molded out of a synthetic resin, and an end surface is formed at one end of the body portion and the other end is opened.  The other end surface for sealing or closing an opening is fixed to the other end of the body portion via a fluid balancer.  The fluid balancer includes a hollow annular member and a predetermined amount of saltwater sealed therein.  The drum is so constructed that its diameter is increased from the one end to the other end due by utilizing a rapping slope.  Therefore, the wash in the drum is moved to the vicinity of the fluid balancer at the other end of the drum along the slope of the inner surface of the drum, thereby to exhibit a maximum balancing effect of the fluid balancer.
Patent CA-2027441-A1 (CA)
Inventor: LEFEBVRE JEAN-MARIE
IPC: A61F2/06
Filed: 1990-10-12
Abstract: This invention relate, to a device adapted to be implanted in a vessel, for example a filter for retaining blood clots in a vein, which comprises lateral legs abutting on the wall of the vessel. According to the invention, each leg, whose end is not sharp, is provided with at least two teeth with antagonistic inclination. They are preferably placed towards the rounded end of the leg and have divergent directions. The tooth is for example obtained by cutting out and pushing a median part of the leg, and possibly by subsequent bending thereof. The angle made by the end part of the tooth with respect to the plane of the leg is included between 0 and 30°; the tip of the tooth is at a distance of between 0.8 and 2 mm from the leg.
Patent CA-2027654-A1 (CA)
Title: Method for the preparation of a fine-grained mixture having hydrophobic properties
Inventor: SIEGMUND WERNER
IPC: C04B14/02
Filed: 1990-10-15
Abstract: ABSTRACT   Preparation of a fine-grained mixture having hydrophobic properties and a grain size substantially less than 0.2 mm and preferable less than 0.1 mm for asphalt-treatment and de-icing, having a hydrophobic component with a hydrophilic component of at least 50% by weight of the mixture and having 55-99.5 % by weight of a residual salt which results from the production of glycerol and 45-0.05% by weight of an additive consisting of salts, oxides, hydroxides, and combinations thereof, in the moist condition and at least partially ground with the residual salt, and containing alkali-earth metal or other non-alkali metals as cations.
Patent CA-2029401-A1 (CA)
Inventor: ALLEN GEORGE S
IPC: A61B19/00
Filed: 1990-11-06
Abstract: ABSTRACT OF THE INVENTION       An interactive system for guiding the use of a surgical tool uses at least one imaging technique, such as CT scanning.  A mechanical arm has a fixed base at a first end and a tool holder that holds the surgical tool at a second end.  A display displays one or more images from the image space of a patient's anatomy.  A computer is coupled to the display and the mechanical arm.  The computer tracks the location of the surgical tool through physical space, performs a transforming rotation of the physical space to the image space, and causes the display to display the location of the surgical tool within the image space.
Patent CA-2029847-A1 (CA)
Title: Heater for a mortar preparation system
Inventor: NEUFELDT ALLEN A
IPC: B28C7/00
Filed: 1990-11-13
Abstract: ABSTRACT    This invention describes a heating system for use with a mortar mixing unit.  The heating system is comprised of a series of heat exchanging portions used to inhibit freezing of the materials used to prepare mortar in extremely cold weather conditions.  The first heat exchanging portion is used to heat the water used to mix mortar.  The second heat exchanging portion is used to warm the mixing unit, which contains the water, aggregate, and sand. The third heat exchanging portion is used to warm the aggregate, which is contained in a silo.
Patent CA-2031331-A1 (CA)
Title: Turnbuckle assembly
IPC: B62D7/20
Filed: 1990-12-03
Abstract: Abstract A turnbuckle assembly for an automotive steering system tie-rod connection applies both radial and axial forces against the engaged threads to resist relaxation of tightening between the threads and to prevent spreading of the seam of a rolled stamped sleeve. Complimentary conical surfaces of a nut and the sleeve apply a compressive force as the nut is advanced axially onto the sleeve.
Patent CA-2032651-A1 (CA)
IPC: H04B3/46
Filed: 1990-12-19
Abstract: TELEPHONE SUBSCRIBER LINE VOLTAGE CHANGE DETECTION     Abstract of the Disclosure Changes in a telephone subscriber line voltage are detected in a telephone set by supplying a voltage dependent upon the subscriber line voltage to a potential divider having first, second, and third tapping points, the second tapping point being between the first and third tapping points, and comparing the voltages at the first and third tapping points with a smoothed version of the voltage at the second tapping point to produce pulses at respective terminals when the line voltage is falling or rising. An algorithm is described for responding to the pulses to distinguish changes in hook state of another telephone connected to the same subscriber line from interfering signals. The arrangement facilitates remote release from hold and privacy indication functions for the telephone set.
Patent CA-2032689-A1 (CA)
Inventor: NOBUYOSHI MASAKIYO
IPC: A61M29/02
Filed: 1990-12-19
Abstract: The catheter of the present invention comprises a body portion, a distal portion and an internal lumen and at least the above body portion includes  a super-elastic metallic tube.  This catheter has a high efficiency of transmitting the pushing force given at its proximal end  (pushability) and  a  high torque  transmission  efficiency.  Furthermore, since the body portion of the catheter includes a super-elastic  metallic  tube,  the  wall  thickness  of  the  body portion can be made sufficiently thin and a catheter with a smaller diameter can be formed.
Patent CA-2033111-A1 (CA)
Inventor: MULLER PETER H
IPC: E05B43/00
Filed: 1990-12-24
Abstract: The device incorporates a time-delayed mech-anism which obstructs movement of a latchbolt from its latched position to an unlatched position.  Linkage coupled to the latchbolt, and manually acutated (by a push pad, or the like), includes an arm which normally pivots, with the manual actuation of the linkage.  An initial, limited movement of the linkage activates a switch, and the latter activates a time delay circuit component.  The latter component, following a specified time delay, interrupts power to a solenoid.  The solenoid, normally powered, has a bar inductively movable therein with a rod joined thereto for coincident movement.  An end of the rod carries a roller which intrudes into the pivotal arc of the arm, pre-venting full pivotable movement thereof.  Con-sequently, the linkage, which is to move the latchbolt to its unlatched position is blocked until the time delay has run its course, where-upon the solenoid is de-energized.  With de-energization of the solenoid, the bar, rod and roller are retracted, to permit full pivotal movement of the arm, and movement of the latch-bolt to its unlatched position.
Patent CA-2034021-A1 (CA)
Title: Rotary die cutter
Inventor: MAY IAN G
IPC: B26F1/44
Filed: 1991-01-11
Abstract: ROTARY DIE CUTTER Abstract of the Disclosure The present invention provides a continuous feed machine for die-cutting paperboard blanks or blanks of similar material in which box blanks of any length can be die cut. This is accomplished by providing a rotary die cutter which rotates intermittently to bring the die into contact with the blank only at spaced time intervals, while maintaining the die roller stationary in the interim as the material moves between the rollers.  The invention also relates to a method of operating a rotary die cutter to cut a material at widely spaced locations.
Patent CA-2035023-A1 (CA)
Title: High-friction prostatic stent
Inventor: ZILBER SERGE
IPC: A61F2/94
Filed: 1990-07-05
Abstract: "HIGH-FRICTION PROSTATIC STENT"           Abstract of the Disclosure A urethral stent is disclosed for the nonsurgical management of bladder outlet obstruction caused by an enlarged prostate. The stent is sufficiently rigid to provide support to assure patency of an intact but contracted urethral lumen but is sufficiently flexible to accommodate the natural anatomical bend of the prostatic urethra. The stent further includes means for frictionally engaging the urethral walls to anchor the device within the prostatic urethra and to prevent migration back into the bladder or down the urethra. When the need arises, the stent is easily ant nonsurgically removed from the prostatic urethra.
Patent CA-2035982-A1 (CA)
Title: Photovoltaic cells for converting light energy to electric energy and photoelectric battery
Inventor: RUBIN LEOIND B
IPC: H01L31/048
Filed: 1991-02-08
Abstract: PHOTOVOLTAIC CELLS FOR CONVERTING LIGHT ENERGY  TO ELECTRIC ENERGY AND PHOTOELECTRIC BATTERY            ABSTRACT OF THE INVENTION:      A photovoltaic cell whose purpose is to convert light energy to electrical energy, and a battery made from a plurality of such cells connected in a serial manner or a parallel manner, or both, is provided.  The photovoltaic cell comprises a semiconductor wafer of photosensitive material, conductive current collecting contacts arranged on each side of the semiconductor wafer, and protective coatings arranged on each side of the semiconductor wafer.   The conductive current coating collecting contacts are connected to current  collectors.   The  conductive current collecting  contacts  at  least  on  the  front  side  of  the semiconductor wafer are configured so as to be electrically connected intermittent sections, where alternate sections are respectively in contact or out of contact with the surface of the photosensitive barrier semiconductor wafer.   A variety of configurations is provided, particularly as to the conductive current collecting contacts.   A variety of materials for the assembly and protection of the photovoltaic cell is contemplated.          The cells exhibit relatively high energy conversion efficiencies, and exceptional life.
Patent CA-2036493-A1 (CA)
Title: Retractor with auxiliary braking mechanism
Inventor: ZYGUTIS JAMES L
IPC: B60R22/42
Filed: 1991-02-18
Abstract: ABSTRACT OF THE DISCLOSURE          A safety belt retractor which has a belt gripping or braking mechanism that is movable between a belt gripping position and an inactive position.  The braking mechanism includes a brake shoe which engages one side of the seat belt webbing and forces the opposite side of the webbing into tight frictional engagement with a compressible elastomeric pad having a high coefficient of friction.  The filaments of the seat belt are compressed into the compressible pad and the pad protrudes into interstices between the filaments.  This gripping action by the pad increases the pull load by a substantial amount, for example, about ten percent (10%).
Patent CA-2037347-A1 (CA)
IPC: C07F7/02
Filed: 1991-02-28
Abstract: A process for producing trimethoxysilane by reacting methanol and silicon metal in the presence of a copper catalyst, and optionally an inert solvent, in which the trimethoxysilane-methanol azeotrope is recycled, characterized by maintaining a 60% methanol conversion.
Patent CA-2037787-A1 (CA)
Title: Portable smoker/barbecue
Inventor: SASIELA EDWARD
IPC: A47J37/07
Filed: 1991-03-07
Abstract: (ss 21, 31, 34 and 142) Abstract This is a seven-piece hinged collapsible metal sheet Portable Smoker/Barbecue unit.  It is quickly set-up, light weight, sturdy, virtually requires little cleaning and takes minimal space when travelling or storing.  A fisherman's delight - can be used anywhere, anytime outdoors.
Patent CA-2038092-A1 (CA)
Inventor: ONNO GUY
IPC: H04L29/10
Filed: 1991-03-11
Abstract: : Installation terminale d'abonné pour réseau asynchrone. Installation terminale d'abonnée pour réseau asynchrone, ayant une terminaison numérique d'abonné (TNA) comprenant une matrice de commutation (MC) et des modules d'accès (MA) reliés chacun d'une part à la matrice de commutation et d'autre part à une interface optique asynchrone ; l'un des modules d'accès est relié à une terminaison numérique de réseau (TNR) les autres modules d'accès étant reliés chacun soit à un terminal soit à un adaptateur de terminal. Un processeur (PR) relié aux modules traite la signalisation reçue ou à émettre par les modules d'accès. Un adaptateur de terminal comprend un adaptateur de multiplex, un adaptateur de service, spécifique d'un service, et un circuit de commande ; l'adaptateur de multiplex est relié par une interface optique asynchrone bidirectionnelle à un module d'accès et par une interface montante et une interface descendante à l'adaptateur de service, lesdites interfaces montantes et descendantes étant des interfaces asynchrones acheminant des cellules. FIGURE A PUBLIER : fig. 3
Patent CA-2042341-A1 (CA)
Title: Silica scale inhibition
Inventor: BARDSLEY JUDY H
IPC: C02F5/12
Filed: 1991-05-10
Abstract: A method for inhibiting silica scale formation in aqueous systems using selected low molecular weight (meth)acrylic or malefic acid based copolymers or terpolymers, magnesium ion alone, or the selected copolymers and terpolymers with aluminum ion or magnesium ion, or polyacrylic or polymaleic acid with aluminum ion or magnesium ion.
Patent CA-2042934-A1 (CA)
Title: Treatment of ocular hypertension with an ocular synergistic combination
Inventor: UENO RYUJI
IPC: A61P25/02
Filed: 1991-05-21
Abstract: The invention relates to a pharmaceutical composition for the treatment of ocular hypertension. The composition comprises an oculo-hypotensively synergistic combination of (a) a 13,14-dihydro-15-ketoprostaglandin compound, and (b) a cholinergic agent in association with a pharmaceutically acceptable carrier, diluent or excipient.